ELECTRIC TELESCOPIC SOFA STRUCTURE

Description

TECHNICAL FIELD

This application relates to the technical field of multifunctional sofas, particularly to an electric telescopic sofa structure.

BACKGROUND TECHNOLOGY

In the existing adjustable sofas, the adjustable parts are only the angle of the backrest and the lifting angle of the foot pads. When the sofa is set to a lying state, its backrest moves backwards, the angle with the base expands, and the foot pads rise, allowing the user to lie down on the sofa and engage in activities such as watching TV, movies, etc.

At present, the method of extending the footrest is to set up cross links on the sofa frame to make the footrest move outward. Generally, manual outward bending is used with springs as auxiliary force to achieve outward expansion and contraction, resulting in the footrest only having two states of contraction and outward expansion, which is less comfortable for different usage states.

SUMMARY OF THE INVENTION

In order to improve the comfort of the footrest in various states, this application provides an electric telescopic sofa structure.

The present application provides an electric telescopic sofa structure, which adopts the following technical solution: an electric telescopic sofa structure comprising a frame, wherein a telescopic rod is provided on the frame, and a swing rod is provided on the lower side of the frame. The upper side of the swing rod is rotatably connected to the frame, and the lower side of the swing rod is connected to the end of the telescopic rod;

The free end of the swing rod is connected to an installation plate, which is used to connect the foot support. The installation plate is connected to the swing rod through a cross rod group. When the swing path of the swing rod starts, the installation plate remains vertical. After the swing rod starts swinging, the installation plate reverses upward and moves in a direction away from the frame.

By adopting the above technical solution, the movement of the swinging rod enables the installation plate to drive the foot support to move. During the movement, it can hover on the swinging path, thereby forming multiple support positions and improving the overall comfort.

Preferably, one end of the telescopic rod is hinged with a horizontal bar, and the end of the horizontal bar is fixedly provided with a matching rod. The end of the matching rod is rotatably connected to the swinging rod, and the other end is hinged to the cross rod group.

Preferably, armrest frames are also provided on both sides of the frame.

Preferably, the armrest frame is detachably connected with an armrest block, which is inserted into the armrest frame.

Preferably, the bottom of the frame is a rotating disk, which is rotatably connected to the frame.

Preferably, the frame is surrounded by contact legs along the vertical direction.

Preferably, the frame is rotatably connected to a backrest body, which is connected to a linkage rod through a backrest bracket. The end of the linkage rod is linked to the cooperating rod to achieve synchronous movement between the backrest body and the footrest.

Preferably, both the backrest body and the footrest are equipped with memory foam.

Preferably, the frame is provided with a limit base located on one side of the cross bar group, and the limit base is equipped with several limit rods that slide horizontally. The limit rods are used to abut against the peripheral side of the cross bar group for support.

Preferably, a driving block is provided for sliding within the base, and an elastic clamp is provided between the driving block and the limit rod. When the limit rod is pressed against the cross rod group, the driving block and the limit rod disengage.

In summary, the present application includes at least one beneficial technical effect as follows: the movement of the swing rod causes the mounting plate to drive the footrest to move, and during the movement, it can hover on the swinging path, thereby forming multiple support positions and improving overall comfort.

ATTACHED IMAGE DESCRIPTION

FIG. 1 is a schematic diagram of the structure of Example 1 of the present application;

FIG. 2 is a schematic diagram of the structure of the framework in Example 1 of the present application;

FIG. 3 is a schematic diagram of a partial explosion in Example 1 of the present application;

FIG. 4 is a schematic diagram of the lower part of the frame as a contact support foot in other embodiments;

FIG. 5 is a schematic diagram of the partial structure of Example 2 of the present application;

FIG. 6 is a partial sectional view of Example 2 of the present application, in which the upper side is the limit rod located on the upper side of the support rod group that passes through and resists, and the lower side is the limit rod that presses against the support rod group;

FIG. 7 is an enlarged schematic diagram of part A in FIG. 6;

FIG. 8 is a schematic diagram of the limit ball stuck on the step and one end of the drive block exposed when the drive block is retracted;

FIG. 9 is a schematic diagram of the structure of Example 3 of the present application, which is a schematic diagram of the backrest body rotating to the middle position.

ANNOTATED WITH REFERENCE NUMBERS

• • 100. Framework; 110. Swing rod; 111. Installation board; 112. Foot rest; 113. Seat cushion; 114. Backrest body; 120. Cross bar group; 121. Telescopic pole; 122. First pole; 123. Second pole; 124. Third pole; 125. Fourth pole; 126. Fifth pole; 127. Coordinating rod; 128. Horizontal bar; 130. Linkage rod; 131. Backrest bracket; 132. Armrest frame; 133. Embedded groove; 134. Armrest block; 135. Embedded block; 136. Rotate the disc; 140. Contact the support foot; 200. Limit base; 210. Limit rod; 211. Driver block; 212. Extension groove; 213. Extension spring; 214. Limit ball; 215. Ball groove; 216. Steps; 300. Rear stabilizer; 310. Lean against the bracket.

SPECIFIC IMPLEMENTATION METHOD

The following provides further detailed explanations of the present application in conjunction with the accompanying drawings.

Example 1: Referring to FIG. 1, the present embodiment discloses an electric telescopic sofa structure, comprising a frame 100, which is a metal frame body. A seat cushion 113 is installed on the upper side of frame 100, and a backrest body 114 is rotatably connected to its rear side.

Referring to FIG. 2, a swing rod 110 is provided on the lower side of the frame 100, and the upper side of the swing rod 110 is rotatably connected to the frame 100. The free end of the swing rod 110 is connected to an installation plate 111, which is used to connect the foot support 112. The installation plate 111 is connected to the swing rod 110 through a cross rod group 120. At the beginning of the swing path of the swing rod 110, the installation plate 111 remains vertical. After the swing of the swing rod 110 starts, the installation plate 111 reverses upward and moves away from the frame 100.

In actual use, when the footrest 112 is in its initial position, it will be located on the inner side of the frame 100, forming a completed part with the front side of the frame 100, that is, the footrest 112 is in a vertical direction. When the footrest 112 is unfolded, it will gradually transition from a vertical state to a horizontal state or close to a horizontal state under the driving of the cross bar group 120.

A telescopic rod 121 is installed on the frame 100, with one end of the telescopic rod 121 hinged to the frame 100, and the other end of the telescopic rod 121 hinged to a horizontal bar 128. The end of the horizontal bar 128 has a cooperating rod 127, and the end of the cooperating rod 127 is rotatably connected to the swinging rod 110. The other end of the cooperating rod 127 is connected to the cross rod group 120. In this embodiment, the telescopic rod 121 is a screw motor that achieves the telescopic function. Its power supply can be provided through an external connection cable or through a charging power source.

In this embodiment, the intersecting rod group 120 consists of several intersecting rods, which will be hinged in the middle. The first rod 122 and the second rod 123 are hinged to each other, and the third rod 124 and the fourth rod 125 are sequentially arranged and hinged to each other. The end of the first rod 122 is rotatably connected to the frame 100, and the end of the second rod 123 is hinged to the mating rod 127. The end of the third rod 124 is also hinged to a fifth rod 126, and the ends of the fifth rod 126 and the fourth rod 125 are hinged to the mounting plate 111.

At the joint point between the cooperating rod 127 and the swinging rod 110, there is also a linkage rod 130 hinged at the same time. The other end of the linkage rod 130 extends to the rear side of the frame 100, and is rotatably connected to the backrest bracket 131 at the rear side of the frame 100. The other end of the linkage rod 130 is hinged to the lower side of the backrest bracket 131. In this way, when the telescopic rod 121 moves, it can drive the backrest bracket 131 to rotate, synchronously causing the backrest to fall and the footrest 112 to rise, making it easy to use.

Referring to FIGS. 2 and 3, there are also armrest frames 132 on both sides of frame 100. A detachable armrest block 134 is connected to the armrest frame 132, and the armrest block 134 is inserted into the armrest frame 132. The armrest frame 132 has an embedded groove 133 that decreases from top to bottom, and a ladder shaped embedded block 135 is provided on the armrest block 134 for insertion into the embedded groove 133 to achieve fixation. The bottom of frame 100 is a rotating disk 136, which is rotatably connected to frame 100.

In other embodiments, referring to FIG. 4, the frame 100 is surrounded by vertical contact legs 140, which can also be pressure rollers.

The backrest 114, seat cushion 113, and footrest 112 are all equipped with memory foam.

Example 2: Referring to FIGS. 5 and 6, the difference from Example 1 is that the frame 100 is equipped with a limit base 200 located on one side of the cross bar group 120. Generally speaking, the limit base 200 can be set in two groups or only one group. The limit base 200 is mainly used to provide additional support force during the multi state hovering of the cross bar group 120.

The limit base 200 is equipped with several limit rods 210 that slide horizontally. The limit rod 210 is used to pass through the cross rod group 120 and form support on both sides of the cross rod group 120.

Referring to FIGS. 6 and 7, the limit base 200 has a hollow structure inside and is equipped with a driving block 211 for internal sliding. An elastic clamping piece is provided between the driving block 211 and the limit rod 210. When the limit rod 210 is pressed against the cross rod group 120, the driving block 211 and the limit rod 210 detach. The driving block 211 corresponds to the limit rod 210, which has an extension groove 212. The limit rod 210 is inserted and slidably connected in the extension groove 212. The elastic clamping piece includes an extension spring 213 set in the extension groove 212, and a limit ball 214 set at the end of the extension spring 213. At one end of the limit rod 210, there is a ball groove 215 for the limit ball 214 to be embedded. In the initial position, the limit ball 214 is embedded in the ball groove 215, and the driving block 211 moves together with the limit rod 210, so that the limit rod 210 moves towards the cross rod group 120.

Due to the different states of the crossbar group 120 at each hovering position, some limit rods 210 will resist against the crossbar group 120. At this time, the thrust continues, and the resistance will be greater than the force of the extension spring 213. The limit ball 214 will detach from the ball groove 215, and the driving block 211 will continue to move. The limit rod 210 will slide relative to the extension groove 212, ultimately achieving partial extension of the limit rod 210 and located on the periphery of the crossbar group 120, providing additional support when the leg rest is used.

Referring to FIG. 8, when the driving block 211 is retracted, the other limit rods 210 still move synchronously. There is a step 216 at the end of the limit rod 210. Therefore, when retracting, the limit ball 214 will first clamp the limit rod 210 and retract together. At the same time, the end of the limit rod 210 will be exposed to the driving block 211. When it reaches the end of the stroke, the end of the limit rod 210 will press against the inner wall, causing the limit ball 214 to be embedded into the ball groove 215 again to achieve reset.

It is worth noting that when the limit ball 214 leaves the ball groove 215, there is a gap between the bottom of the limit ball 214 and the shaft of the limit rod 210 after leaving the step 216, which will not affect the stopping action of the limit rod 210.

In this embodiment, the driving mode of the driving block 211 can also be a screw motor or a manual screw structure, as long as the driving block 211 can move back and forth.

Example 3: The difference from Example 1 is that, referring to FIG. 9, in order to improve the stability of the backrest body 114 when facing backwards, a backrest stabilizer frame 300 is added to the rear side of the frame 100 to adjust the center of gravity. At the same time, a backrest bracket 310 is rotatably connected to the back side of the backrest body 114. When the backrest body 114 is in a vertical state, it will be embedded in the backrest body 114. When the backrest body 114 moves with the telescopic rod 121, it will gradually open and always maintain a vertical state, ultimately supporting it on the ground to provide additional support force.

The embodiments of this specific implementation are the preferred embodiments of the present application and do not limit the scope of protection of the present application.

Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the scope of protection of the present application.