CORNER PIECE USED IN RAPID BUILDING SYSTEM

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of co-pending International Patent Application No. PCT/CN2024/094143, filed on May 20, 2024, which claims the priority and benefit of Chinese patent application number 202310798011.8, filed on Jul. 3, 2023 with China National Intellectual Property Administration, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present invention pertains to the field of exhibition displays, performances, and advertising structure construction, particularly concerning a corner piece for rapid building systems.

BACKGROUND

The existing components of exhibition booths, stages, and advertising platforms have the following drawbacks: 1) The materials used for frames of the building modules are all wood, which can only be used once and cannot be recycled, resulting in a waste of forest resources and poor environmental friendliness; 2) The connection between module frames is achieved through welding, bonding, or bolt connection, which not only requires a long time for disassembly and assembly, but also wastes a significant amount of manpower, material resources, and financial resources; 3) There are considerable installation errors in the above-mentioned connection methods between module frames, which can eventually lead to the failure to achieve the construction goal due to the accumulation of significant errors; 4) To form a complete building system, existing technologies require the assembly of multiple frames with connectors before installing the external decorative panels on the frames, and disassembly involves removing the external decorative panels before disassembling the connected frames, thus causing time-consuming disassembly and assembly and low building efficiency.

In response to these issues, Chinese Patent [CN209099826U] provides a corner building module and a building system, including a corner profile. Said corner profile has at least two grooves and cavities extending along the length of the corner profile, with the planes formed by the bottoms of adjacent grooves being at an angle greater than 0 degrees and less than 180 degrees. Said grooves or cavities are equipped with connectors for connecting the corner building modules with adjacent building modules. The invention also discloses a building system comprising corner building modules and standard building modules. The advantages of the present invention include: recyclability; environmental friendliness; quick and easy disassembly and assembly; accurate installation with minimal error; simplicity in manufacturing, and high construction efficiency; moreover, continuity and aesthetic appeal of the exhibition booth walls and ceilings are enhanced. An analysis of this patent reveals that to achieve wall corners or connect more modules, continuous adjustments to the corner profile structure are necessary. In this process, designers expend considerable labor, and the production of this corner profile requires independent mold-making, thereby increasing production costs.

Consequently, there is a current need for a new type of corner piece for wall corners.

SUMMARY

To address the aforementioned issues, the present invention is implemented as follows:

A corner piece for use in a rapid building system, comprising an upper cover, a lower cover, and an intermediate profile;

Said upper cover and said lower cover are mounted at the ends of said intermediate profile;

The surfaces of said upper cover and said lower cover each have at least one groove 1;

Said intermediate profile has a groove 2 on one side for connecting to a snap-fit fabric.

Preferably, said intermediate profile is equipped with at least one of the following: a positioning pin, a said positioning bolt holder, and a said positioning bolt.

Preferably, said intermediate profile is internally equipped with at least one of the following: a profile support piece and a positioning pin locking piece;

Said profile support piece 1 is used for installing said positioning bolt and said positioning bolt holder;

Said positioning pin locking piece is provided with interconnected holes 1 and 2 for connecting the positioning pin of the building module;

Said hole 1 is a circular hole, while hole 2 is an elongated hole extending in the circumferential direction of the cross-sectional ring of said positioning pin locking piece.

Preferably, said upper cover is interference-fitted with said lower cover and said intermediate profile.

Preferably, said upper cover and said lower cover are provided with through hole 1;

Said through hole 1 is connected with said intermediate profile.

Preferably, the surface of said intermediate profile is equipped with at least two adjacent or opposing grooves 3;

Said groove 3 is provided with mounting hole 1, mounting hole 2, mounting hole 3, and through hole 2;

Said positioning bolt holder is installed within groove 3 through one of said mounting holes 1;

Said positioning bolt is installed within said groove 3 adjacent to or opposite said positioning bolt holder through another one of said mounting holes 1;

Said through hole 2 is located at both ends of said intermediate profile, and said through hole 2 is surrounded by a mounting hole 2;

Said mounting hole 3 is used for installing said positioning pin.

Preferably, said upper cover and said lower cover have a boss and a connecting block at their bottoms;

Preferably, said connecting block is disposed at the four corners of said upper cover and said lower cover;

Said boss is provided with at least two connecting holes corresponding to said through hole 2 and a mounting hole 4 corresponding to said mounting hole 2; a bolt passes through mounting hole 2, the connecting hole, and mounting hole 4 to install and secure the upper cover and the lower cover to the end of the intermediate profile.

Preferably, said intermediate profile is also provided with a positioning lock and a positioning lock retainer;

Said positioning lock includes a retractable and extendable lock bolt, a lock bolt-holding hollow tube, and a spring; Said lock bolt comprises a bolt rod and a positioning lock bolt head;

Said bolt rod is mounted on said spring and installed within the cavity of said lock bolt-holding hollow tube;

One end of said lock bolt rod is connected to said positioning lock bolt head, and the other end is fixed with a pressure plate;

The inner wall of said lock bolt-holding hollow tube has a pressing portion for pressing said spring;

Said spring is compressed between said pressure plate and said pressing portion; Said lock bolt rod is provided with a steering rod near said positioning lock bolt head;

Said lock bolt-holding hollow tube is provided with rod slot 1 and rod slot 2 extending in longitudinal direction of said lock bolt-holding hollow tube near the end with said positioning lock bolt head;

The depth of said rod slot 1 is greater than the depth of said rod slot 2;

When said positioning lock bolt head abuts against the end of said lock bolt-receiving hollow tube, said steering rod is located within said rod slot 1; when said positioning lock bolt head is inserted into said through hole 2, said steering rod is located within said rod slot 2;

Said positioning lock retainer is provided with a through cavity;

Said positioning lock bolt head is nested within said through cavity;

Said through hole corresponds to said through hole 2;

A bolt passes through said mounting hole 2 to connect said positioning lock retainer and said intermediate profile.

When a positioning pin lock piece is disposed within said intermediate profile, said intermediate profile further includes profile support piece 2;

Said positioning pin lock piece passes through said profile support piece 2 and is clamped within said through hole 1.

Preferably, at least one end of said positioning pin lock piece is provided with a claw portion for driving the rotation of the positioning pin lock piece.

Preferably, said positioning pin lock piece is internally provided with a nylon piece fixed to the shaft.

Preferably, said positioning bolt includes a disc-shaped bolt head, a cylindrical connecting bolt rod, a fixed bolt rod, and a positioning mounting plate;

One end of said connecting bolt rod is connected to said disc-shaped bolt head, and the other end of said connecting bolt rod is connected to said fixed bolt rod;

Said positioning mounting plate is in close contact with said intermediate profile;

Said positioning mounting plate is provided with a plurality of insertion holes 1;

Said fixed bolt rod passes through one of insertion holes 1 and one of said mounting holes 1 in sequence, and is connected to said support piece 1; the bolt passes through the remaining said insertion holes 1 and said mounting holes 1 in sequence, and is connected to said support piece 1;

Said positioning bolt holder includes insertion hole 2 for said bolt head to insert into and insertion hole 3 for said bolt rod to insert into; The size of said insertion hole 3 does not allow said bolt head to pass through;

Said positioning bolt holder is a hollow tube, and said insertion hole 2 is the cavity of said hollow tube;

Said insertion hole 3 is a slot-shaped hole in the wall of said hollow tube that extends longitudinally along said hollow tube;

One end of said insertion hole 3 extends to the end of the hollow tube;

Said positioning bolt holder is in contact with said intermediate profile;

An insertion hole 4 is provided on said positioning bolt holder;

The bolt passes through mounting hole 1, said insertion hole 4, and the intermediate profile in sequence before connecting to said support piece 1.

Preferably, said positioning pin includes a head portion, a rod portion, and a mounting rod;

Said rod includes a small-diameter rod connected to a large-diameter rod;

One end of said small-diameter rod is connected to said head portion, and the other end is connected to the large-diameter rod;

The diameter of said small-diameter rod is less than the diameter of said spherical head. One end of said large-diameter rod is connected to said small-diameter rod, and the other end is removably installed in said mounting hole 3;

Said mounting rod is connected to said mounting hole 3.

Preferably, said upper cover and said lower cover are equal-sized squares, with side lengths ranging from 59 mm to 65 mm.

Compared with prior arts, the present invention offers the following benefits:

• • 1) The use of the present invention in a building system for a corner piece in a rapid building module, including positioning pins, positioning pin lock pieces, positioning bolts, positioning bolt holders, and positioning locks, preferably made of metal, allows for all components to be recycled and reused, thereby avoiding the waste of forest resources and exhibiting excellent environmental friendliness.
  • 2) Since the connection between the corner piece and the building module only requires two steps: inserting the positioning pin into the positioning pin lock piece and rotating the positioning pin lock piece, or the connection between the corner piece and the standard module only requires one installation step of inserting the positioning bolt into the positioning bolt holder, or two installation steps by adding the positioning lock into the lock hole; compared to traditional bolt connections and welding, the connection and disassembly are very simple and quick, remarkably saving labor, material, and financial resources.
  • 3) The corner piece in the present invention is a standard part, which significantly shortens the customization cycle and greatly reduces the economic cost.
  • 4) Both the connection between the corner piece and the building module and the connection between two adjacent corner pieces results in accurate installation positioning, remarkably reducing connection and installation errors.
  • 5) When the corner piece is combined with the building module, the positioning pin, positioning bolt, positioning bolt holder, and positioning lock are all hidden within the space formed by the opposite grooves of the corner profile and the building module profile, making these connectors invisible from the outside. This results in a high overall aesthetic appearance when the corner piece is combined with the building module.
  • 6) The manufacturing process of the corner piece is simple, and its modular design significantly reduces manufacturing costs.
  • 7) By setting the corner piece of the present invention, different directional standard building modules can be rapidly and accurately connected to each other and to the corner piece on the profile, thus greatly improving the continuity and aesthetics of exhibition booth walls and ceilings.
  • 8) The corner piece of the present invention can form right-angle turns, and by connecting corner pieces to each other, the length and thickness of the building modules are adjustable to enrich the range of applications.

BRIEF DESCRIPTION OF DRAWINGS

To give a clearer description of the technical solutions in the embodiments of the present invention or the prior arts, the drawings needed for the description of the embodiments or prior arts are briefly presented below. Obviously, the drawings described below deal only with an embodiment of present invention. Ordinary skill in the art can obtain other drawings based on the said drawings without making creative efforts.

FIG. 1 is a structural diagram of an embodiment of the present invention;

FIG. 2 is an exploded structural diagram of an embodiment of the present invention;

FIG. 3 is a side diagram of an embodiment of the present invention;

FIG. 4 is a structural diagram of the upper cover of an embodiment of the present invention;

FIG. 5 is a structural diagram of the positioning lock in the present invention;

FIG. 6 is a structural diagram of the positioning lock retainer;

FIG. 7 is a structural diagram of the positioning bolt;

FIG. 8 is a structural diagram of the positioning bolt holder;

FIG. 9 is a structural diagram of the mounting plate;

FIG. 10 is a structural diagram of the combination of positioning bolt and positioning bolt holder;

FIG. 11 is a structural diagram of the corner piece connected to the building module in Embodiment 1;

FIG. 12 is a structural diagram of the corner piece in Embodiment 2;

FIG. 13 is a structural diagram of the positioning pin;

FIG. 14 is a structural diagram of the positioning pin lock;

FIG. 15 is a structural diagram of the nylon piece within the shaft;

FIG. 16 is a structural diagram of the positioning pin lock piece connected to profile support piece 2;

FIG. 17 is a structural diagram of the limit ring;

FIG. 18 is a structural diagram of the positioning pin connected to the positioning pin lock piece;

FIG. 19 is a structural diagram of the corner piece in Embodiment 3;

FIG. 20 is a structural diagram of the corner piece connected to the building module in Embodiment 3;

FIG. 21 is a structural diagram of Embodiment 4;

FIG. 22 is a structural diagram of the corner piece connected to the building module in Embodiment 4.

In the aforementioned drawings, the reference numerals denote the following components:

• • 1-Upper Cover
  • 1-1-Connecting Block
  • 1-2-Boss
  • 1-2-1-Mounting Hole 4
  • 1-3-Through Hole 1
  • 1-4-Groove 1
  • 2-Intermediate Profile
  • 2-1-Positioning Pin Lock Piece
  • 2-1-1-Hole 1
  • 2-1-2-Hole 2
  • 2-1-3-Claw Portion
  • 2-1-4-Nylon Piece within Shaft
  • 2-1-5-Limit Ring
  • 2-1-6-Limit Slot
  • 2-1-7-Limiting Bolt 1
  • 2-1-8-Profile Support 2
  • 2-1-8-1-Limit Bolt 2
  • 2-1-8-2-Limit Bolt 2
  • 2-2-Positioning Pin
  • 2-2-1-Head Portion
  • 2-2-2-Rod Portion
  • 2-2-2-1-Small-Diameter Rod
  • 2-2-2-2-Large-Diameter Rod
  • 2-2-3-Mounting Rod
  • 2-3-Positioning Bolt
  • 2-3-1-Bolt Head
  • 2-3-2-Bolt Rod
  • 2-3-3-Positioning Mounting Plate
  • 2-3-3-1-Insertion Hole 1
  • 2-4-Positioning Bolt Holder
  • 2-4-1-Insertion Hole 2
  • 2-4-2-Insertion Hole 3
  • 2-4-3-Insertion Hole 4
  • 2-5-Groove 2
  • 2-6-Groove 3
  • 2-6-1-Installation Hole 1
  • 2-6-2-Installation Hole 2
  • 2-6-3-Installation Hole 3
  • 2-6-4-Through Hole 2
  • 2-7-Positioning Lock Retainer
  • 2-7-1-Through Cavity
  • 2-8-Profile Support Piece 1
  • 2-9-Positioning Lock
  • 2-9-1-Lock Bolt
  • 2-9-1-1-Lock Bolt Rod
  • 2-9-1-2-Positioning Lock Bolt Head
  • 2-9-1-3-Pressure Plate
  • 2-9-1-4-Steering Rod
  • 2-9-2-Lock Bolt-receiving Hollow Tube
  • 2-9-2-1-Rod Slot 1
  • 2-9-2-2-Rod Slot 2
  • 2-9-3-Spring
  • 3-Lower Cover

DESCRIPTION OF EMBODIMENTS

The drawings in embodiments of the present invention are used to give a clearer and more complete description of the technical solutions in embodiments of the present invention. It is obvious that the described embodiments are just part of the embodiments of the present invention. Based on embodiments of the present invention, every other embodiment achieved by the one of ordinary skill in the art without creative efforts is deemed within the protection scope of the present invention.

Embodiment 1

In a specific Embodiment 1, as shown in FIGS. 1 and 2, a corner piece used in rapid building system includes an upper cover 1, a lower cover 3, and an intermediate profile 2. Upper cover 1 and lower cover 3 are mounted at opposite ends of intermediate profile 2. The surfaces of upper cover 1 and lower cover 3 are each provided with groove 1 1-42-5, and one side of the intermediate profile 2 is provided with groove 2 2-5 for connecting a snap-fit fabric. In this embodiment, the height of the upper cover 1 and the lower cover 3 is 62 mm; therefore, groove 1 1-42-5 is U-shaped.

The upper cover 1 and the lower cover 3 are interference-fitted with the intermediate profile 2. Both the upper cover 1 and the lower cover 3 are provided with through hole 1 1-3, which are connected with the intermediate profile 2. As shown in FIG. 4, both the upper cover 1 and the lower cover 3 is designed with boss 1-2 and connecting block 1-1 at their bottoms, with the connecting block 1-1 located at the four corners of the upper cover 1 and the lower cover 3. The boss 1-2 is octagonal in shape, and through hole 1 1-3 is located inside the boss 1-2. Among these, four sides of the boss 1-2 are provided with connecting holes corresponding to through hole 2 2-6-4, and an installation hole 4 1-2-1 corresponding to installation hole 2 2-6-2. A bolt passes through installation hole 2 2-6-2 and installation hole 4 1-2-1 to mount and secure the upper cover 1 and the lower cover 3 to the ends of intermediate profile 2.

The positioning bolt holder 2-4 is mounted on one side of the intermediate profile 2, and the positioning bolt 2-3 is mounted on an adjacent or opposite side of the positioning bolt holder 2-4. In this embodiment, the positioning bolt 2-3 is mounted on the adjacent side of the positioning bolt holder 2-4.

In Embodiment 1, the intermediate profile 2 is provided with only profile support 1 2-8, which is used to install the positioning bolt 2-3 and the positioning bolt holder 2-4.

As shown in FIG. 3, the surface of intermediate profile 2 is provided with at least two adjacent or opposite grooves 3 2-6; in this embodiment, there are four grooves 3 2-6.

Groove 3 2-6 is provided with mounting hole 1 2-6-1, mounting hole 2 2-6-2, mounting hole 3 2-6-3, and through hole 2 2-6-4. The positioning bolt holder 2-4 is installed inside the groove 3 2-6 through mounting hole 1 2-6-1, and the positioning bolt 2-3 is installed inside groove 3 2-6 adjacent or opposite to the positioning bolt holder 2-4 through another mounting hole 1 2-6-1. The through hole 2 2-6-4 is opened at both ends of the intermediate profile 2, and the through hole 2 2-6-4 is surrounded by a mounting hole 2 2-6-2. Mounting hole 3 2-6-3 is used to install the positioning pin 2-2.

As shown in FIG. 5, the intermediate profile 2 further includes a positioning lock 2-9. In this embodiment, the positioning lock 2-9 is adopted from the positioning lock 2-9 in Patent [CN209099826U], including a lock bolt 2-9-1 that can extend and retract, a lock bolt-receiving hollow tube 2-9-2, and a spring 2-9-3. The lock bolt 2-9-1 comprises a lock bolt rod 2-9-1-1 and a positioning lock bolt head 2-9-1-2. The lock bolt rod 2-9-1-1 is fitted over the spring 2-9-3 and installed within cavity of the lock bolt-receiving hollow tube 2-9-2. One end of the lock bolt rod 2-9-1-1 is connected to the positioning lock bolt head 2-9-1-2, and the other end is fixed with a pressure plate 2-9-1-3. The inner wall of the lock bolt-receiving hollow tube 2-9-2 has a pressing portion (not shown in the figure) for pressing the spring 2-9-3, which is pressed between the pressure plate 2-9-1-3 and the pressing portion. The lock bolt rod 2-9-1-1 is provided with a steering rod 2-9-1-4 near the positioning lock bolt head 2-9-1-2. The lock bolt-receiving hollow tube 2-9-2 has a rod slot 1 2-9-2-1 and a rod slot 2 2-9-2-2 extending along the tube length direction near the positioning lock bolt head 2-9-1-2. The depth of rod slot 1 2-9-2-1 is greater than that of rod slot 2 2-9-2-2. When the positioning lock bolt head 2-9-1-2 pushes against the end of the lock bolt-receiving hollow tube 2-9-2, the steering rod 2-9-1-4 is located within rod slot 1 2-9-2-1. When the positioning lock bolt head 2-9-1-2 is inserted into mounting hole 2 2-6-2 and the mounting hole 4 1-2-1, the steering rod 2-9-1-4 is located within the rod slot 2 2-9-2-2, and partially within the through hole 1 1-3, flush with the upper cover 1 or the lower cover 3. Users can manipulate the steering rod 2-9-1-4 to make connection between the corner piece and the building module.

As shown in FIG. 6, the intermediate profile 2 is also provided with a positioning lock retainer 2-7. The positioning lock retainer 2-7 is provided with a through cavity 2-7-1, within which the positioning lock bolt head 2-9-1-2 is nested. The through cavity 2-7-1 corresponds to through hole 2 2-6-4 and the connecting hole. The positioning lock retainer 2-7 is adhered to the end of the intermediate profile 2 and connected by a bolt. At this point, the bolt passes through mounting hole 2 2-6-2 and mounting hole 4 1-2-1 to connect the positioning lock retainer 2-7, the intermediate profile 2, and the upper cover 1 or the lower cover 3.

As shown in FIG. 7, the positioning bolt 2-3 includes a disc-shaped bolt head, a cylindrical connecting bolt rod, a fixed bolt rod, and a positioning mounting plate 2-3-3. One end of the connecting bolt rod is connected to the disc-shaped bolt head, and the other end is connected to the fixed bolt rod. The positioning mounting plate 2-3-3 adheres to the intermediate profile 2. As shown in FIG. 9, two insertion holes 1 2-3-3-1 are made in the positioning mounting plate 2-3-3. The fixed bolt rod passes through one insertion hole 1 2-3-3-1 and an installation hole 1 2-6-1, then connects to support piece 1. A bolt passes through the remaining insertion hole 1 2-3-3-1 and the mounting hole 1 2-6-1, then connects to support piece 1.

As shown in FIG. 8, the positioning bolt holder 2-4 includes an insertion hole 2 2-4-1 for insertion of the bolt head 2-3-1 and an insertion hole 3 2-4-2 for insertion of bolt rod 2-3-2. The size of insertion hole 3 2-4-2 does not allow the bolt head 2-3-1 to pass through. The positioning bolt holder 2-4 is a hollow tube component, where insertion hole 2 2-4-1 is the cavity of the hollow tube component, and insertion hole 3 2-4-2 is a slotted hole extending longitudinally along the wall of the hollow tube component. One end of insertion hole 3 2-4-2 extends to the end of the hollow tube component. The positioning bolt holder 2-4 adheres to the intermediate profile 2 and is provided with an insertion hole 4 2-4-3. A bolt passes through the installation hole 1 2-6-1 and the insertion hole 4 2-4-3, then fixes to support piece 1. In this embodiment, insertion hole 3 2-4-2 is set at both ends of the positioning bolt holder 2-4, allowing for vertical installation depending on the user's preference. This installation method is more flexible compared to a single-direction installation.

When using the corner piece of this embodiment to connect with a building module, first position the corner piece and the building module a certain distance apart in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4. Then, align one side of the corner piece with one side of a building module component, and insert the positioning bolt 2-3 into the positioning bolt holder 2-4, as shown in FIG. 10, completing the connection between the corner piece and the building module component. In this embodiment 1, where the corner piece is used to create a wall corner, another building module component is connected using the same method, forming a 90° corner as shown in FIG. 11. It should be noted that in this embodiment 1, since the positioning bolt 2-3 is installed on the adjacent or opposite side of the positioning bolt holder 2-4, the corner piece can also extend the length of the module when the positioning bolt 2-3 is installed on the opposite side of the positioning bolt holder 2-4. Moreover, the corner piece can further extend the module's length based on user needs by connecting corner pieces together. Groove 1 1-42-5 can be used for positioning; when two corner pieces are placed side by side, they can be aligned and positioned using the U-shaped groove.

After the corner piece and the building module are connected, the steering rod 2-9-1-4 of the positioning lock 2-9 is pulled out from the rod slot 1 2-9-2-1 and rotated around the axis of the bolt-receiving hollow tube 2-9-2 by a certain angle, so that the steering rod 2-9-1-4 snaps into rod slot 2 2-9-2-2. At this point, the positioning lock bolt head 2-9-1-2 is inserted into mounting hole 2 2-6-2. The size of the mounting hole 2 2-6-2 is precisely designed to allow the insertion of the positioning lock bolt head 2-9-1-2 but prevent its movement within the hole. This achieves accurate installation and positioning of the corner piece and the building module component in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4, thus reducing connection and installation errors. Furthermore, this connection and installation process essentially requires only two steps: inserting the positioning bolt 2-3 into the positioning bolt holder 2-4 and inserting the positioning lock 2-9 into the lock hole, resulting in an extremely simple and efficient installation process. Upon completion of the installation, users have the option to cover the entire structure with a soft decorative fabric. By installing and fitting the soft decoration within groove 2 2-5, the overall appearance can be enhanced to ensure that the internal materials are not exposed and thereby increasing the product's sense of completeness.

The disassembly process is the reverse of the installation process. First, the steering rod 2-9-1-4 is pulled out from the rod slot 2 2-9-2-2 and rotated around the axis of the bolt-receiving hollow tube 2-9-2 by a certain angle. Under the resilient force of the spring 2-9-3, the steering rod 2-9-1-4 is inserted into the slot 1 2-9-2-1. At this point, the positioning lock bolt head 2-9-1-2 is removed from the mounting hole 2 2-6-2. Thereafter, the corner piece and the building module component are moved apart in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4, allowing the positioning bolt 2-3 to be separated from the positioning bolt holder 2-4, thus completing the disassembly of the corner piece and the building module component.

Embodiment 2

In a specific embodiment 2, as shown in FIG. 12, a corner piece used in rapid building system includes an upper cover 1, a lower cover 3, and an intermediate profile 2. The upper cover 1 and the lower cover 3 are mounted at the ends of the intermediate profile 2. The surfaces of the upper cover 1 and the lower cover 3 are provided with a groove 1 1-42-5, and one side of the intermediate profile 2 is provided with a groove 2 2-5 that communicates with the groove 1 1-42-5.

The upper cover 1 and the lower cover 3 are interference-fitted with the intermediate profile 2. Both the upper cover 1 and the lower cover 3 are provided with through hole 1 1-3, which are connected with the intermediate profile 2.

As shown in FIG. 16, the intermediate profile 2 is provided with a positioning pin lock piece 2-1, a profile support piece 1 2-8, and a profile support piece 2 2-1-8. In this embodiment, the positioning pin lock piece 2-1 is a hollow tube with a cylindrical cross-section.

As shown in FIG. 13, the positioning pin 2-2 includes a head 2-2-1, a rod 2-2-2, and a mounting rod 2-2-3. The rod 2-2-2 comprises a small-diameter rod 2-2-2-1 and a large-diameter rod 2-2-2-2, which are connected end to end. The small-diameter rod 2-2-2-1 is connected to the head 2-2-1 at one end and to the large-diameter rod 2-2-2-2 at the other end. The diameter of the small-diameter rod 2-2-2-1 is smaller than the diameter of the spherical head. The large-diameter rod 2-2-2-2 is connected to the small-diameter rod 2-2-2-1 at one end and removably installed in the mounting hole 3 2-6-3 at the other end. In this embodiment, the head 2-2-1 is a spherical head 2-2-1. The mounting rod 2-2-3 is connected to mounting hole 3, and the positioning pin is mounted on the intermediate profile through the connection between mounting rod 2-2-3 and mounting hole 3 2-6-3.

As shown in FIG. 14, the positioning pin lock piece 2-1 is provided with interconnected hole 1 2-1-1 and hole 2 2-1-2, which are used to connect the fixed positioning pin 2-2 of the external building module. The hole 1 2-1-1 is a circular hole, and the hole 2 2-1-2 is a slotted hole extending in the circumferential direction of the circular ring of the cross-section of positioning pin lock piece. The size of hole 1 2-1-1 allows the head 2-2-1 to pass through, and the size of the hole 2 2-1-2 does not allow the head 2-2-1 to pass through but allows the rod 2-2-2 to pass through.

The positioning pin lock piece 2-1 passes through the profile support piece 1 2-8 and the profile support piece 2 2-1-8, and is clamped in the through hole 1 1-3. At least one end of the positioning pin lock piece has a claw portion 2-1-3 for driving the hollow tube to rotate 90 degrees around its axis.

The positioning pin lock piece internally fixes a nylon piece within shaft 2-1-4, as shown in FIG. 15. One side of the nylon piece within shaft 2-1-4 is provided with an elongated slot for the small-diameter rod 2-2-2-1 to enter. The surface of the nylon piece within shaft 2-1-4 facing the axis of the circular hollow tube is provided with a groove that can form friction with the spherical head 2-2-1. The surface of the nylon piece within shaft 2-1-4 away from the axis of the circular hollow tube has an accurate shape adapted to inner wall of the circular hollow tube. To facilitate installation of the positioning pin 2-2, a slot for tool clamping is also provided on the large-diameter rod 2-2-2-2. Furthermore, the positioning pin lock piece 2-1 also includes a limit ring 2-1-5, as shown in FIG. 17. The limit ring 2-1-5 is fixedly connected to the profile support piece 2 2-1-8. A limit slot 2-1-6 extending in the circumferential direction of the cross-section of the circular hollow tube is provided on the outer surface of the circular hollow tube, and the inner peripheral portion of the limit ring 2-1-5 is inserted into the limit slot 2-1-6. The outer peripheral portion of the limit ring 2-1-5 extends out of the limit slot 2-1-6 and abuts against the profile support piece 2 2-1-8. Thus, the circular hollow tube can be prevented from moving relative to the profile support piece 1 2-8 in the direction of its tube axis. Besides, a limit bolt 1 2-1-7 is fixed on the positioning pin lock piece 2-1, and a limit bolt 2 2-1-8-1 and a limit bolt 3 2-1-8-2 are fixed on the profile support piece 2 2-1-8. When the positioning pin lock piece 2-1 rotates clockwise around its tube axis by a certain angle, the limit bolt 1 2-1-7 abuts against the limit bolt 2 2-1-8-1 to prevent the circular hollow tube from continuing to rotate clockwise. When the positioning pin lock piece 2-1 rotates counterclockwise around its tube axis by a certain angle, the limit bolt 1 2-1-7 abuts against the limit bolt 3 2-1-8-2 to prevent the positioning pin lock piece 2-1 from continuing to rotate counterclockwise. Thus, it can be ensured that the positioning pin lock piece 2-1 rotates to the correct position without excessive rotation, and at the same time, prevents the positioning pin lock piece 2-1 from sliding out of the through hole 2 2-6-4.

The positioning bolt holder 2-4 is mounted on one side of the intermediate profile 2, and the positioning bolt 2-3 is mounted on an adjacent or opposite side of the positioning bolt holder 2-4.

The intermediate profile 2 is provided with two adjacent or opposite grooves 3 2-6 on its surface. The groove 3 2-6 is provided with a mounting hole 1 2-6-1, a mounting hole 2 2-6-2, a mounting hole 3 2-6-3, and a through hole 2 2-6-4. The positioning bolt holder 2-4 is installed in the groove 3 2-6 through mounting hole 1 2-6-1, and the positioning bolt 2-3 is installed in the groove 3 2-6 adjacent to or opposite the positioning bolt holder 2-4 through another mounting hole 1 2-6-1. The through hole 2 2-6-4 is provided at both ends of the intermediate profile 2, and the mounting hole 2 2-6-2 is surrounded by the through hole 2 2-6-4. The mounting hole 3 2-6-3 is used to install the positioning pin 2-2. In this embodiment, positioning pins 2-2 are installed on the intermediate profile 2.

When using the corner piece of Embodiment 2 to install with a building module, align the positioning pin 2-2 in the corner piece with the mounting hole 3 2-6-3 of the building module, and insert the positioning pin 2-2 into the mounting hole 3 2-6-3 of the building module. The positioning pin 2-2 is connected to the positioning pin lock piece 2-1 in the building module, and the spherical head 2-2-1 enters hole 1 2-1-1 on the circular hollow tube, while a portion of the small-diameter rod 2-2-2-1 also enters hole 1 2-1-1. The large-diameter rod 2-2-2-2 does not enter hole 1 2-1-1. At this point, a special rotating tool (not shown in the figure) is inserted into the claw portion 2-1-3, and the special rotating tool is engaged with the claw portion 2-1-3. By rotating the special tool 90 degrees, the circular hollow tube also rotates 90 degrees around its axis. Now, the small-diameter rod 2-2-2-1 enters hole 2 2-1-2, and the spherical head 2-2-1 is trapped in the cavity of the circular hollow tube and cannot be removed. Additionally, the nylon piece within shaft 2-1-4 is in frictional contact with the spherical head 2-2-1 to prevent the circular hollow tube from rotating in the opposite direction and causing the head 2-2-1 to fall out of the circular hollow tube, as shown in FIG. 18. To detach, perform the opposite operations as described above to separate the building module component from the corner piece, which is a simple process. Alternatively, the positioning pin 2-2 can be removed, and the positioning pin 2-2 from the building module can be used to connect with the positioning pin lock piece 2-1 in the corner piece, thus achieving installation and disassembly using the same method.

In Embodiment 2, the positioning pin 2-2 can also be detached, and the positioning bolt 2-3 and positioning bolt holder 2-4 can be used to connect with the building module, offering various methods of use.

Embodiment 3

In a specific embodiment 3, as shown in FIG. 19, a corner piece used in rapid building system includes an upper cover 1, a lower cover 3, and an intermediate profile 2. The upper cover 1 and the lower cover 3 are mounted at the ends of the intermediate profile 2. The surfaces of the upper cover 1 and the lower cover 3 are provided with two grooves 1 1-42-5, and one side of the intermediate profile 2 is provided with a groove 2 2-5 that communicates with the groove 1 1-42-5.

The upper cover 1 and the lower cover 3 are interference-fitted with the intermediate profile 2. Both the upper cover 1 and the lower cover 3 are provided with through hole 1 1-3, which are connected with the intermediate profile 2.

The positioning bolt holder 2-4 is mounted on one side of the intermediate profile 2, and the positioning bolt 2-3 is mounted on an adjacent or opposite side of the positioning bolt holder 2-4.

In Embodiment 3, the intermediate profile 2 is provided with only profile support 1 2-8, which is used to install the positioning bolt 2-3 and the positioning bolt holder 2-4.

The intermediate profile 2 is provided with two adjacent or opposite grooves 3 2-6 on its surface. The groove 3 2-6 is provided with a mounting hole 1 2-6-1, a mounting hole 2 2-6-2, a mounting hole 3 2-6-3, and a through hole 2 2-6-4. The positioning bolt holder 2-4 is installed in the groove 3 2-6 through mounting hole 1 2-6-1, and the positioning bolt 2-3 is installed in the groove 3 2-6 adjacent to or opposite the positioning bolt holder 2-4 through another mounting hole 1 2-6-1. The through hole 2 2-6-4 is provided at both ends of the intermediate profile 2, and the mounting hole 2 2-6-2 is surrounded by the through hole 2 2-6-4. The mounting hole 3 2-6-3 is used for installing the positioning pin 2-2.

The intermediate profile 2 further includes a positioning lock 2-9. The positioning lock 2-9 includes a lock bolt 2-9-1 that can extend and retract, a lock bolt-receiving hollow tube 2-9-2, and a spring 2-9-3. The lock bolt 2-9-1 comprises a lock bolt rod 2-9-1-1 and a positioning lock bolt head 2-9-1-2. The lock bolt rod 2-9-1-1 is fitted over the spring 2-9-3 and installed within cavity of the lock bolt-receiving hollow tube 2-9-2. One end of the lock bolt rod 2-9-1-1 is connected to the positioning lock bolt head 2-9-1-2, and the other end is fixed with a pressure plate 2-9-1-3. The inner wall of the lock bolt-receiving hollow tube 2-9-2 has a pressing portion for pressing the spring 2-9-3, which is pressed between the pressure plate 2-9-1-3 and the pressing portion. The lock bolt rod 2-9-1-1 is provided with a steering rod 2-9-1-4 near the positioning lock bolt head 2-9-1-2. The lock bolt-receiving hollow tube 2-9-2 has a rod slot 1 2-9-2-1 and a rod slot 2 2-9-2-2 extending along the tube length direction near the positioning lock bolt head 2-9-1-2. The depth of rod slot 1 2-9-2-1 is greater than that of rod slot 2 2-9-2-2. When the positioning lock bolt head 2-9-1-2 pushes against the end of the lock bolt-receiving hollow tube 2-9-2, the steering rod 2-9-1-4 is located within rod slot 1 2-9-2-1. When the positioning lock bolt head 2-9-1-2 is inserted into mounting hole 2 2-6-2, the steering rod 2-9-1-4 is located within the rod slot 2 2-9-2-2, and partially within the through hole 1 1-3, flush with the upper cover 1 or the lower cover 3. Users can manipulate the steering rod 2-9-1-4 to make connection between the corner piece and the building module.

The intermediate profile 2 is also provided with a positioning lock retainer 2-7, which has a through cavity 2-7-1. The positioning lock bolt head 2-9-1-2 is nested within the through cavity 2-7-1, which corresponds to the through hole 2 2-6-4. The positioning lock retainer 2-7 adheres to the end of the intermediate profile 2, and a bolt passes through the mounting hole 2 2-6-2 to connect the positioning lock retainer 2-7 and the intermediate profile 2.

The positioning bolt 2-3 includes a disc-shaped bolt head, a cylindrical connecting bolt rod, a fixed bolt rod, and a positioning mounting plate 2-3-3. One end of the connecting bolt rod is connected to the disc-shaped bolt head, and the other end is connected to the fixed bolt rod. The positioning mounting plate 2-3-3 adheres to the intermediate profile 2. Two insertion holes 1 2-3-3-1 are made in the positioning mounting plate 2-3-3. The fixed bolt rod passes through one insertion hole 1 2-3-3-1 and an installation hole 1 2-6-1, then connects to support piece 1. A bolt passes through the remaining insertion hole 1 2-3-3-1 and the mounting hole 1 2-6-1, then connects to support piece 1.

The positioning bolt holder 2-4 includes an insertion hole 2 2-4-1 for insertion of the bolt head 2-3-1 and an insertion hole 3 2-4-2 for insertion of bolt rod 2-3-2. The size of insertion hole 3 2-4-2 does not allow the bolt head 2-3-1 to pass through. The positioning bolt holder 2-4 is a hollow tube component, where insertion hole 2 2-4-1 is the cavity of the hollow tube component, and insertion hole 3 2-4-2 is a slotted hole extending longitudinally along the wall of the hollow tube component. One end of insertion hole 3 2-4-2 extends to the end of the hollow tube component. The positioning bolt holder 2-4 adheres to the intermediate profile 2 and is provided with an insertion hole 4 2-4-3. A bolt passes through the installation hole 1 2-6-1 and the insertion hole 4 2-4-3, then fixes to support piece 1.

When using the corner piece of this embodiment to connect with a building module, first position the corner piece and the building module a certain distance apart in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4. Then, align one side of the corner piece with one side of a building module component, and insert the positioning bolt 2-3 into the positioning bolt holder 2-4, completing the connection between the corner piece and the building module component. In this embodiment 1, where the corner piece is used to create a wall corner, another building module component is connected using the same method, forming a 90° corner as shown in FIG. 20. It should be noted that in this embodiment 3, since the positioning bolt 2-3 is installed on the adjacent or opposite side of the positioning bolt holder 2-4, the corner piece can also extend the length of the module when the positioning bolt 2-3 is installed on the opposite side of the positioning bolt holder 2-4. Moreover, the corner piece can further extend the module's length based on user needs by connecting corner pieces together.

After the corner piece and the building module are connected, the steering rod 2-9-1-4 of the positioning lock 2-9 is pulled out from the rod slot 1 2-9-2-1 and rotated around the axis of the bolt-receiving hollow tube 2-9-2 by a certain angle, so that the steering rod 2-9-1-4 snaps into rod slot 2 2-9-2-2. At this point, the positioning lock bolt head 2-9-1-2 is inserted into mounting hole 2 2-6-2. The size of the mounting hole 2 2-6-2 is precisely designed to allow the insertion of the positioning lock bolt head 2-9-1-2 but prevent its movement within the hole. This achieves accurate installation and positioning of the corner piece and the building module component in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4, thus reducing connection and installation errors. Furthermore, this connection and installation process essentially requires only two steps: inserting the positioning bolt 2-3 into the positioning bolt holder 2-4 and inserting the positioning lock 2-9 into the lock hole, resulting in an extremely simple and efficient installation process. Upon completion of the installation, users have the option to cover the entire structure with a soft decorative fabric. By installing and fitting the soft decoration within groove 2 2-5, the overall appearance can be enhanced.

The disassembly process is the reverse of the installation process. First, the steering rod 2-9-1-4 is pulled out from the rod slot 2 2-9-2-2 and rotated around the axis of the bolt-receiving hollow tube 2-9-2 by a certain angle. Under the resilient force of the spring 2-9-3, the steering rod 2-9-1-4 is inserted into the slot 1 2-9-2-1. At this point, the positioning lock bolt head 2-9-1-2 is removed from the mounting hole 2 2-6-2. Thereafter, the corner piece and the building module component are moved apart in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4, allowing the positioning bolt 2-3 to be separated from the positioning bolt holder 2-4, thus completing the disassembly of the corner piece and the building module component.

Embodiment 4

In a specific embodiment 4, as shown in FIG. 21, a corner piece used in rapid building system includes an upper cover 1, a lower cover 3, and an intermediate profile 2. The upper cover 1 and the lower cover 3 are mounted at the ends of the intermediate profile 2. The surfaces of the upper cover 1 and the lower cover 3 are provided with 4 grooves 1 1-42-5. The intermediate profile 2 is provided with a groove 2 2-5 that communicates with groove 1 1-4, which is used for installing the snap-fit fabric.

The upper cover 1 and the lower cover 3 are interference-fitted with the intermediate profile 2. Both the upper cover 1 and the lower cover 3 are provided with through hole 1 1-3, which are connected with the intermediate profile 2.

The positioning bolt holder 2-4 is mounted on one side of the intermediate profile 2, and the positioning bolt 2-3 is mounted on an adjacent side of the positioning bolt holder 2-4. In Embodiment 4, the intermediate profile 2 is provided with only profile support 1 2-8, which is used to install the positioning bolt 2-3 and the positioning bolt holder 2-4.

When using the corner piece of this embodiment to connect with a building module, first position the corner piece and the building module a certain distance apart in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4. Then, align one side of the corner piece with one side of a building module component, and insert the positioning bolt 2-3 into the positioning bolt holder 2-4, completing the connection between the corner piece and the building module component. In this embodiment 1, where the corner piece is used to create a wall corner, another building module component is connected using the same method, forming a 90° corner. Using the same method, building modules can be installed on the remaining two sides of the corner piece, as shown in FIG. 22. Additional corner pieces can also be connected to increase the height or expand the building modules, thereby extending the range of use of the system formed by the building modules. When the corner pieces are positioned relative to each other vertically, the groove 1 1-42-5 of the upper and lower end covers 3 facilitates alignment by the workers. It should be noted that in this embodiment 4, since the positioning bolt 2-3 is installed on the adjacent or opposite side of the positioning bolt holder 2-4, the corner piece can also extend the length of the module when the positioning bolt 2-3 is installed on the opposite side of the positioning bolt holder 2-4. Moreover, the corner piece can further extend the module's length based on user needs by connecting corner pieces together.

After the corner piece and the building module are connected, the steering rod 2-9-1-4 of the positioning lock 2-9 is pulled out from the rod slot 1 2-9-2-1 and rotated around the axis of the bolt-receiving hollow tube 2-9-2 by a certain angle, so that the steering rod 2-9-1-4 snaps into rod slot 2 2-9-2-2. At this point, the positioning lock bolt head 2-9-1-2 is inserted into mounting hole 2 2-6-2. The size of the mounting hole 2 2-6-2 is precisely designed to allow the insertion of the positioning lock bolt head 2-9-1-2 but prevent its movement within the hole. This achieves accurate installation and positioning of the corner piece and the building module component in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4, thus reducing connection and installation errors. Furthermore, this connection and installation process essentially requires only two steps: inserting the positioning bolt 2-3 into the positioning bolt holder 2-4 and inserting the positioning lock 2-9 into the lock hole, resulting in an extremely simple and efficient installation process. Upon completion of the installation, users have the option to cover the entire structure with a soft decorative fabric. By installing and fitting the soft decoration within groove 2 2-5, the overall appearance can be enhanced.

The disassembly process is the reverse of the installation process. First, the steering rod 2-9-1-4 is pulled out from the rod slot 2 2-9-2-2 and rotated around the axis of the bolt-receiving hollow tube 2-9-2 by a certain angle. Under the resilient force of the spring 2-9-3, the steering rod 2-9-1-4 is inserted into the slot 1 2-9-2-1. At this point, the positioning lock bolt head 2-9-1-2 is removed from the mounting hole 2 2-6-2. Thereafter, the corner piece and the building module component are moved apart in the direction where the positioning bolt 2-3 inserts into the positioning bolt holder 2-4, allowing the positioning bolt 2-3 to be separated from the positioning bolt holder 2-4, thus completing the disassembly of the corner piece and the building module component.

In addition to the situations mentioned in the embodiments above, the length of the intermediate profile 2 is adjustable in this application. Both the positioning lock 2-9 and the positioning pin lock piece is installed within the intermediate profile 2, and they are installed in the same way as that described in the embodiments above; hence, no further elaboration is provided.

In a preferred embodiment, the upper cover 1 and the lower cover 3 are squares of equal size, with side lengths ranging from 59 mm to 65 mm for both the upper cover 1 and the lower cover 3.