ADJUSTABLE SHOULDER STRAP, ITS MANUFACTURING METHOD, AND BRASSIERE STRAP ADJUSTMENT RING

Description

BACKGROUND OF THE PRESENT INVENTION

Field of Invention

The present invention relates to the field of brassiere accessories, and more particularly to an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring.

Description of Related Arts

A brassiere, as a type of clothing, has become one of the indispensable and essential garments in modern life. As the living standards continue to improve, people not only pursue the practicality and functionality of brassieres, but also pay more attention to their aesthetic and comfort levels, wherein whether a brassiere fits well is a crucial factor in ensuring wearing comfort. The current brassiere size parameters generally correspond to the underbust size of the wearer and the difference between the upper and lower bust sizes, which can roughly reflect whether the cup size and strap length of the brassiere match the bust size and chest circumference of the wearer. Since the brassiere also serves to lift and support the bust of the wearer, whether the cups provide good upward support is also important. Thus, brassieres with shoulder strap of appropriate length are also important for the comfort of the wearer. However, due to differences in body shape and height among wearers, even if the brassiere size is the same, the appropriate shoulder strap length may differ. Hence, most existing brassieres use adjustable shoulder straps.

Specifically, referring to FIG. 1A, a conventional 8-shaped shoulder strap adjustment ring (10P) is illustrated, wherein, the 8-shaped shoulder strap adjustment ring (10P) comprises a frame body (11P) and a divider column (12P) horizontally placed in the frame body (11P), wherein the divider column (12P) divides the area defined by the frame body (11P) into a first guiding hole (13P) and a second guiding hole (14P). Referring to FIG. 1B, during the installation process, first, a fixed end (21P) of a shoulder strap (20P) is threaded through the first guiding hole (13P) of the frame body (11P). After reversing the fixed end (21P), the fixed end (21P) is threaded through the second guiding hole (14P) of the frame body (11P) again. The fixed end (21P) is then stitched and secured to the shoulder strap (20P) using a stitching (23P), thereby setting the 8-shaped shoulder strap adjustment ring (10P) on the shoulder strap (20P). After installing the 8-shaped shoulder strap adjustment ring (10P) on the shoulder strap (20P), further referring to FIG. 1C, a connecting end (22P) of the shoulder strap (20P) is threaded through a fixed ring (30P) that is arranged on the cup, and then the connecting end (22P) is threaded through the second guiding hole (14P) of the frame body (11P). The connecting end (22P) is then reversed and threaded through the first guiding hole (13P) of the frame body (11P) again, wherein the connecting end (22P) is subsequently connected to the back strap of the brassiere. Thus, by adjusting the distance between the 8-shaped shoulder strap adjustment ring (10P) and the connecting end (22P) along the shoulder strap (20P), the length of the shoulder strap (20P) can be adjusted, allowing the wearer to adjust the shoulder strap length according to their body shape and wearing habits.

However, the 8-shaped shoulder strap adjustment ring (10P) causes the shoulder strap (20P) to thread through the frame body (11P) multiple times during production, making the process is burdensome and complex, resulting in low production efficiency and high labor costs. Additionally, the shoulder strap (20P) will be doubly overlapped on the divider column (12P), causing the corresponding brassiere at the 8-shaped shoulder strap adjustment ring (10P) position to often protrude through the outer garment of the wearer, which is aesthetically unpleasing and can cause the wearer to feel embarrassed. Furthermore, since the shoulder strap (20P) threads through the first guiding hole (13P) and the second guiding hole (14P) twice, occupying the space of the first guiding hole (13P) and the second guiding hole (14P), the wearer is required to exert more force to move the shoulder strap (20P) through the first guiding hole (13P) and the second guiding hole (14P) during adjustment. Moreover, the fixed end (21P) sewn to the shoulder strap (20P) creates a stepped thickness difference, affecting the comfort of the wearer.

SUMMARY OF THE PRESENT INVENTION

The present invention provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the brassiere strap adjustment ring can be directly fixed to the corresponding shoulder strap.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the manufacturing process of the adjustable shoulder strap is simplified, facilitating increased production efficiency and cost reduction.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the adjustable shoulder strap does not need to be multilayered at the adjustment position, thereby reducing thickness and achieving a seamless effect.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the adjustable shoulder strap allows the wearer to smoothly adjust the length, enhancing the user's experience.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the adjustable shoulder strap comprises a strap body and the brassiere strap adjustment ring, wherein the strap body is directly sewn to the brassiere strap adjustment ring without the need for a folding method to install the brassiere strap adjustment ring, simplifying the production process and increasing production efficiency.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the strap body does not need to pass through both sides of the brassiere strap adjustment ring multiple times for folding, thereby avoiding multilayer overlapping at the brassiere strap adjustment ring, reducing the thickness of the adjustable shoulder strap.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the strap body only needs to pass through the brassiere strap adjustment ring once, ensuring that the wearer can smoothly adjust the strap body.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the brassiere strap adjustment ring comprises a frame body and a fixed column, wherein the frame body is defined to have a threading space, and the fixed column is horizontally placed in the frame body, dividing the threading space into a first guiding hole and a second guiding hole, wherein the fixed column has at least one threading hole aligned with the opening direction of the first guiding hole and the second guiding hole, allowing the corresponding stitching to pass through the threading hole to stitch and secure one end of the strap body to the fixed column without needing to fold the strap body to install the strap body and the brassiere strap adjustment ring.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the number of the threading holes is at least two, allowing the corresponding stitching to thread through the adjacent threading holes, enhancing the stitching firmness between the strap body and the fixed column.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein one end of the strap body is directly stitched and secured to the fixed column, thus, avoiding thickness differences with the strap body, thereby enhancing the comfort of the wearer.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the strap body does not need to be folded through both sides of the brassiere strap adjustment ring, thus, saving the length reserved for folding the existing shoulder strap, reducing material usage, and lowering costs.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the fixed column has a hole frame defining the threading hole, comprising a first side, a second side, a third side, and a fourth side, wherein the first side, the second side, the third side, and the fourth side are connected end-to-end sequentially, in which the end of the first side is connected to the beginning of the second side, the end of the second side is connected to the beginning of the third side, the end of the third side is connected to the beginning of the fourth side, and the end of the fourth side is connected to the beginning of the first side, thereby encircling and defining the threading holes, wherein the hole frame has a structure in which the first side overlaps the third side when rotated 180° counterclockwise about the physical center point of the threading hole, and the second side overlaps the fourth side when rotated 180° counterclockwise about the physical center point of the threading hole, based on the structural design of the hole frame to enhance the accuracy of the corresponding stitching threading through and improve the position limiting effect of the hole frame on the corresponding stitching, ensuring the stitching firmness between the strap body and the fixed column.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the end where the first side and the fourth side are connected, as well as the end where the second side and the third side are connected, are two horizontal ends of the hole frame, wherein the hole frame is arranged such that the lines connecting each of the two horizontal ends of the hole frame are on the same straight line, thereby reducing the distance of the stitching threading through between adjacent threading holes, saving stitching material.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the line connecting the horizontal ends of the hole frame is parallel to the horizontal direction of the fixed column, thereby enhancing the accuracy of machine threading, improving the production efficiency.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the end where the first side and the second side are connected, as well as the end where the third side and the forth side are connected, are two vertical ends of the hole frame, wherein the hole frame is arranged such that the lines connecting the two vertical ends are perpendicular to the horizontal direction of the fixed column, to reduce the distance between the threading hole with the first guiding hole and the second guiding hole, thereby facilitating the stitching to thread through the threading hole and the first threading hole, and/or to thread through the threading hole and the second threading hole, thereby enhancing the stitching firmness between the strap body and the fixed column. Based on the reduced distance between the threading hole with the first guiding hole and the second guiding hole, the stitching material is saved, thereby reducing the costs.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the first side is parallel to the third side, and the second side is parallel to the fourth side, thereby enhancing the accuracy of machine threading based on a regular structure and improving production efficiency.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein the first side, the second side, the third side, and the fourth side are all of equal length, further improving the regularity of the structure of the threading hole, enhancing the efficiency of machine threading, and effectively reducing the probability of the machine needle hitting the fixed column, thereby reducing the consumption of the production materials and lowering costs.

The present invention further provides an adjustable shoulder strap, its manufacturing method, and brassiere strap adjustment ring, wherein each of the threading holes are arranged such that the distance between two adjacent threading holes is equal, thereby enhancing machine threading efficiency based on the uniformity and regularity of the threading hole arrangement.

According to one aspect of the present invention, the present invention provides a brassiere strap adjustment ring for adjusting the length of a brassiere strap, wherein the brassiere strap adjustment ring comprises:

• • A frame body, wherein the frame body is defined to have a threading space; and
  • A fixed column, wherein the fixed column is horizontally placed in the frame body, dividing the threading space into a first guiding hole and a second guiding hole, wherein the fixed column has at least one threading hole aligned with the opening direction of the first guiding hole and the second guiding hole, and the brassiere strap adjustment ring is adapted to be sewn to the brassiere strap with corresponding stitching threading through the threading hole.

In one embodiment, wherein the number of the threading holes is at least two.

In one embodiment, wherein the fixed column has a hole frame defining the threading hole, wherein the hole frame comprises a first side, a second side, a third side, and a fourth side, wherein the first side, the second side, the third side, and the fourth side are connected end-to-end sequentially, wherein the hole frame has a structure in which the first side overlaps the third side when rotated 180° counterclockwise about the physical center point of the threading hole, and the second side overlaps the fourth side when rotated 180° counterclockwise about the physical center point of the threading hole.

In one embodiment, wherein the end where the first side and the fourth side are connected, as well as the end where the second side and the third side are connected, are two horizontal ends of the hole frame, wherein the hole frame is arranged such that the lines connecting each of the two horizontal ends of the hole frame are on the same straight line.

In one embodiment, wherein the line connecting the horizontal ends of the hole frame is parallel to the horizontal direction of the fixed column, wherein said hole frame is arranged such that the lines connecting each of said two horizontal ends of said hole frame are on the same straight line.

In one embodiment, wherein the end where the first side and the second side are connected, as well as the end where the third side and the forth side are connected, are two vertical ends of the hole frame, wherein the hole frame is arranged such that the lines connecting the two vertical ends are perpendicular to the horizontal direction of the fixed column.

In one embodiment, wherein the first side is parallel to the third side, and the second side is parallel to the fourth side.

In one embodiment, wherein the first side, the second side, the third side, and the fourth side are all of equal length.

In one embodiment, wherein the number of the threading holes is at least three, wherein each of the threading holes are arranged such that the distance between the two adjacent threading holes is equal.

According to another aspect of the present invention, the present invention provides an adjustable shoulder strap, wherein the adjustable shoulder strap comprises:

• • A strap body, wherein the strap body has a fixed end and a connecting end corresponding to the fixed end; and
  • A brassiere strap adjustment ring, wherein the brassiere strap adjustment ring comprises a frame body and a fixed column, wherein the frame body is defined to have a threading space, and the fixed column is horizontally placed in the frame body, dividing the threading space into a first guiding hole and a second guiding hole, wherein the fixed column has at least one threading hole aligned with the opening direction of the first guiding hole and the second guiding hole, wherein the fixed end of the strap body is stitched and secured to the fixed column on one side of the brassiere strap adjustment ring by threading through the threading hole with the corresponding stitching, wherein the side where the fixed end is located is designated as the rear side of the brassiere strap adjustment ring, and the other side is designated as the front side of the brassiere shoulder strap adjustment ring, wherein the strap body is adapted to allow the connecting end to pass through the frame body from the rear side to the front side via the second guiding hole, and to pass through the frame body from the front side to the rear side via the first guiding hole.

In one embodiment, wherein the number of the threading holes is at least two.

In one embodiment, wherein the fixed column has a hole frame defining the threading hole, wherein the hole frame comprises a first side, a second side, a third side, and a fourth side, wherein the first side, the second side, the third side, and the fourth side are connected end-to-end sequentially, wherein the hole frame has a structure in which the first side overlaps the third side when rotated 180° counterclockwise about the physical center point of the threading hole, and the second side overlaps the fourth side when rotated 180° counterclockwise about the physical center point of the threading hole.

In one embodiment, wherein the end where the first side and the fourth side are connected, as well as the end where the second side and the third side are connected, are two horizontal ends of the hole frame, wherein the hole frame is arranged such that the lines connecting each of the two horizontal ends of the hole frame are on the same straight line.

In one embodiment, wherein the line connecting the horizontal ends of the hole frame is parallel to the horizontal direction of the fixed column.

In one embodiment, wherein the end where the first side and the second side are connected, as well as the end where the third side and the forth side are connected, are two vertical ends of the hole frame, wherein the hole frame is arranged such that the lines connecting the two vertical ends are perpendicular to the horizontal direction of the fixed column.

In one embodiment, wherein the first side is parallel to the third side, and the second side is parallel to the fourth side.

In one embodiment, wherein the first side, the second side, the third side, and the fourth side are all of equal length.

In one embodiment, wherein the number of the threading holes is at least three, wherein each of the threading holes are arranged such that the distance between the two adjacent threading holes is equal.

According to another aspect of the present invention, the present invention provides a manufacturing method of an adjustable shoulder strap, wherein the manufacturing method of an adjustable shoulder strap comprises the following steps:

• • A. Stitching and securing one end of a strap body to a fixed column of a brassiere strap adjustment ring on the rear side of the brassiere strap adjustment ring using stitching;
  • B. Passing the other end of the strap body from the rear side, on one side of the fixed column, through a frame body to the front side of the brassiere shoulder strap adjustment ring;
  • C. Passing the other end of the strap body from the front side, on the other side of the fixed column, through the frame body to the rear side.

In one embodiment, wherein the manufacturing method of an adjustable shoulder strap, before the step A, further comprises a step of stamping to form the brassiere strap adjustment ring, wherein the brassiere strap adjustment ring comprises the frame body and the fixed column, wherein the frame body is defined to have a threading space, and wherein the fixed column is horizontally placed in the frame body, dividing the threading space into a first guiding hole and a second guiding hole, wherein the fixed column has at least one threading hole aligned with the opening direction of the first guiding hole and the second guiding hole.

The further objectives and advantages of the present invention will become fully apparent from the following descriptions and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic structural view of the conventional 8-shaped shoulder strap adjustment ring.

FIG. 1B is a schematic state view of the conventional 8-shaped shoulder strap adjustment ring installed on a shoulder strap.

FIG. 1C is a schematic structural view of the shoulder strap with the conventional 8-shaped shoulder strap adjustment ring.

FIG. 2 is a schematic structural view of the brassiere strap adjustment ring in one embodiment of the present invention.

FIG. 3 is an enlarged schematic structural view of the portion of the brassiere strap adjustment ring of the above embodiment of the present invention.

FIG. 4 is a schematic structural view of the brassiere strap adjustment ring connected to the strap body of the above embodiment of the present invention.

FIG. 5 is a schematic state view of the brassiere strap adjustment ring comprising an adjustable shoulder strap during the manufacturing process of the above embodiment of the present invention.

FIG. 6 is a schematic state view of the adjustable shoulder strap during the manufacturing process of the above embodiment of the present invention.

FIG. 7 is a schematic state view of the adjustable shoulder strap during the manufacturing process of the above embodiment of the present invention.

FIG. 8 is a schematic structural view of the adjustable shoulder strap of the above embodiment of the present invention.

FIG. 9 is a schematic state view of the adjustable shoulder strap during the adjustment process of the above embodiment of the present invention.

FIG. 10 is a schematic view of a deformed structure of the brassiere strap adjustment ring connected to the strap body of the above embodiment of the present invention.

FIG. 11 is a schematic structural view of a brassiere comprising the adjustable shoulder strap of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the present invention.

Those skilled in the art should understand that in the disclosure of the present invention, terms such as ‘longitudinal,’ ‘transverse,’ ‘upper,’ ‘lower,’ ‘front,’ ‘rear,’ ‘left,’ ‘right,’ ‘vertical,’ ‘horizontal,’ ‘top,’ ‘bottom,’ ‘inside,’ ‘outside,’ etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings. These are for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation or be constructed and operated in a specific orientation, thus these terms should not be understood as limiting the present invention.

It should be understood that the term “a” should be interpreted to mean “at least one” or “one or more.” In one embodiment, the number of an element can be one, while in another embodiment, the number of that element can be multiple. The term “a” should not be interpreted as a limitation on quantity.

Referring to FIG. 2, a brassiere strap adjustment ring (10) in one embodiment of the present invention is schematically shown, wherein the brassiere strap adjustment ring (10) comprises a frame body (11) and a fixed column (12), wherein the frame body (11) is defined to have a threading space (110), and the fixed column (12) is horizontally placed in the frame body (11), dividing the threading space (110) into a first guiding hole (13) and a second guiding hole (14), wherein the fixed column (12) has at least one threading hole (15) aligned with the opening direction of the first guiding hole (13) and the second guiding hole (14), wherein the brassiere strap adjustment ring (10) can be directly sewn onto the strap through stitching based on the threading hole (15).

Specifically, referring to FIG. 4 and FIG. 5, an adjustable shoulder strap comprising the brassiere strap adjustment ring (10) is schematically shown, wherein the adjustable shoulder strap further comprises a strap body (20), wherein the strap body (20) is directly connected to the brassiere strap adjustment ring (10) with stitching (30) threading through the threading hole (15), simplifying the production process and increasing production efficiency.

Wherein the strap body (20) has a fixed end (21) and a connecting end (22) corresponding to the fixed end (21), wherein the strap body (20) is connected to the brassiere strap adjustment ring (10) at the fixed end (21) by the stitching (30), hence, the strap body (20) does not need to be connected to the brassiere strap adjustment ring (10) by passing the fixed end (21) through the first guiding hole (13) and the second guiding hole (14) of the frame body (11), thereby simplifying the process.

Furthermore, the fixed end (21) is directly connected to the brassiere strap adjustment ring (10) by the stitching (30) without needing to fold and sew onto the strap body (20), thus, avoiding the height difference between the fixed end (21) and the strap body (20), thereby enhancing the comfort of the wearer.

Notably, wherein the strap body (20) is connected to the brassiere strap adjustment ring (10) at the fixed end (21) using the stitching (30), hence, there is no need for the method of allowing the fixed end (21) to pass through the frame body (11) via the first guiding hole (13) and the second guiding hole (14) to connect the strap body (20) to the brassiere strap adjustment ring (10), therefore, the strap body (20) does not need to reserve the length required for folding back the existing shoulder strap, thereby saving the production materials and lowering costs.

Further referring to FIG. 3, wherein the fixed column (12) has a hole frame (121) defining the threading hole (15), wherein the hole frame (121) comprises a first side (1211), a second side (1212), a third side (1213), and a fourth side (1214), wherein the first side (1211), the second side (1212), the third side (1213), and the fourth side (1214) are connected end-to-end sequentially, in which the end of the first side (1211) is connected to the beginning of the second side (1212), the end of the second side (1212) is connected to the beginning of the third side (1213), the end of the third side (1213) is connected to the beginning of the fourth side (1214), and the end of the fourth side (1214) is connected to the beginning of the first side (1211), thereby encircling and defining the threading holes (15), wherein the hole frame (121) has a structure in which the first side (1211) would overlap the third side (1213) when hypothetically rotated 180° counterclockwise about the physical center point of the threading hole (15), and the second side (1212) would overlap the fourth side (1214) when hypothetically rotated 180° counterclockwise about the physical center point of the threading hole (15), based on the structural design of the hole frame (121) to enhance the accuracy of the corresponding stitching (30) threading through and improve the position limiting effect of the hole frame (121) on the corresponding stitching (30), ensuring the stitching firmness between the strap body (20) and the fixed column (12).

Specifically, the number of the threading holes (15) is at least two, allowing the stitching (30) to thread through between adjacent threading holes (15), enhancing the stitching firmness between the strap body (20) and the fixed column (12).

Notably, where the end where the first side (1211) and the fourth side (1214) are connected, as well as the end where the second side (1212) and the third side (1213) are connected, are two ends (1215) of the hole frame (121) which are of a same horizontal axis, wherein the hole frame (121) is arranged such that the hypothetical virtual lines connecting each of the two ends (1215) of the hole frame (121) are on the same straight line, thereby reducing the distance of the stitching (30) threading through between adjacent threading holes (15), saving stitching material.

Specifically, wherein the hypothetical virtual line connecting the ends (1215) of the hole frame (121) is parallel to the horizontal direction of the fixed column (12), thereby enhancing the accuracy of machine threading, improving the production efficiency.

Notably, where the end where the first side (1211) and the second side (1212) are connected, as well as the end where the third side (1213) and the forth side (1214) are connected, are two ends (1216) of the hole frame (121) which are of a same vertical axis, wherein the hole frame (121) is arranged such that the hypothetical virtual lines connecting the two ends (1216) are perpendicular to the horizontal direction of the fixed column (12), to reduce the distance between the threading hole (15) with the first guiding hole (13) and the second guiding hole (14), thereby facilitating the stitching (30) to thread through the threading hole (15) and the first guiding hole (13), and/or to thread through the threading hole (15) and the second guiding hole (14), as shown in FIG. 10. The stitching (30) further threads through the threading hole (15) and the first guiding hole (13), thereby enhancing the stitching firmness between the strap body (20) and the fixed column (12), and based on the reduced distance between the threading hole (15) with the first guiding hole (13) and the second guiding hole (14), the stitching material is saved, thereby reducing the costs. In other words, the stitching (30) comprises a plurality of first stitching thread portions (31) each passing through one of the plurality of threading holes (15) and the first guiding hole (13), and a second stitching thread portion (32) between two adjacent first stitching thread portions (31) of the plurality of first stitching thread portions (31), wherein each second stitching thread portion (32) passes through two adjacent threading holes (15). The first side (1211), the second side (1212), the third side (1213), and the fourth side (1214) are connected end-to-end sequentially to form two first connecting positions (1217) which are spacedly arranged along an extending direction of the corresponding first stitching thread portion (31) and two second connecting positions (1218) which are spacedly arranged along an extending direction of the corresponding second stitching thread portion (32). In this embodiment, the extending direction of each first stitching thread portion (31) is vertical, the extending direction of each second stitching thread portion (32) is horizontal.

Specifically, wherein the first side (1211) is parallel to the third side (1213), and the second side (1212) is parallel to the fourth side (1214), thereby enhancing the accuracy of machine threading based on a regular structure and improving production efficiency.

Notably, wherein the first side (1211), the second side (1212), the third side (1213), and the fourth side (1214) are all of equal length, further improving the regularity of the structure of the threading hole (15), enhancing the efficiency of machine threading, and effectively reducing the probability of the machine needle hitting the fixed column, thereby reducing the consumption of the production materials and lowering costs.

Furthermore, after fixing the fixed end (21) of the strap body (20) to the brassiere strap adjustment ring (10) with the corresponding stitching (30), the adjustable shoulder strap is installed by threading the strap body (20) through the brassiere strap adjustment ring (10) based on the corresponding steps, allowing the strap body (20) to adjust the distance between the fixed end (21) and the connecting end (22) based on the brassiere strap adjustment ring (10), thereby achieving the adjustment of the length of the strap body (20).

Specifically referring to FIGS. 5 to 7, after fixing the fixed end (21) of the strap body (20) to the brassiere strap adjustment ring (10) with the corresponding stitching (30). Wherein the strap body (20) is folded back and threaded through the frame body (11). Specifically, the side where the fixed end (21) is located is designated as the rear side (111) of the brassiere strap adjustment ring (10). After folding the strap body (20), the connecting end (22) passes through the frame body (11) from the rear side (111) to the other side of the brassiere strap adjustment ring (10) via the second guiding hole (14), wherein the other side of the brassiere strap adjustment ring (10) is designated as the front side (112) of the brassiere strap adjustment ring (10). After further folding the strap body (20), the connecting end (22) passes through the frame body (11) from the front side (112) to the rear side (111) via the first guiding hole (13), thereby completing the installation of the adjustable shoulder strap.

Referring to FIG. 8, the section from the fixed end (21) of the strap body (20) to the second guiding hole (14) is referred to as the overlapping section (23) of the strap body (20), the section of the strap body (20) on the front side (112) is referred to as the transition section (24), and the section from the connecting end (22) of the strap body (20) to the first guiding hole (13) is referred to as the length section (25) of the strap body (20), allowing the overall length adjustment of the strap body (20) based on the length adjustment of the overlapping section (23) and the length section (25).

Specifically, referring to FIG. 9, by passing a portion of the length section (25) through the frame body (11) via the first guiding hole (13) to transition into the transition section (24), and by passing a portion of the transition section (24) through the frame body (11) via the second guiding hole (14) to transition into the overlapping section (23), the overall length of the strap body (20) is shortened. Conversely, by passing a portion of the overlapping section (23) through the frame body (11) via the second guiding hole (14) to transition into the transition section (24), and by passing a portion of the transition section (24) through the frame body (11) via the first guiding hole (13) to transition into the length section (25), the overall length of the strap body (20) is lengthened. Since the strap body (20) only passes through the first guiding hole (13) and the second guiding hole (14) once, there is only one layer of the strap body (20) in the first guiding hole (13) and the second guiding hole (14). Therefore, the strap body (20) does not occupy the entire space of the first guiding hole (13) and the second guiding hole (14), ensuring that the wearer can smoothly adjust the strap body (20).

Notably, referring to FIG. 6, wherein before the connecting end (22) of the strap body (20) passes through the second guiding hole (14), the connecting end (22) also passes through a connecting ring (40), wherein the connecting ring (40) can be fixed to either the cup or the back strap of the corresponding brassiere, wherein the connecting end (22) of the strap body (20) is connected to the other of the cup or the back strap, thereby connecting the adjustable shoulder strap to the brassiere. In one embodiment, wherein the connecting ring (40) may not be pre-set on the strap body (20), during the subsequent brassiere manufacturing process, a ring with an opening is set on the brassiere, and the overlapping section (23) of the strap body (20) is threaded through the opening to connect to the brassiere.

Specifically, the adjustable shoulder strap has only a single layer of the strap body (20) on the front side (112) and at most two layers of the strap body (20) on the rear side (111). And since the strap body (20) has at most only two overlapping layers, the adjustable shoulder strap does not require multiple layers at the adjustment position, thereby reducing thickness and achieving a seamless effect.

Further referring to FIG. 11, a brassiere comprising the adjustable shoulder strap is shown, wherein the brassiere further comprises a cup portion (50) and two back straps (60) extending from the sides of the cup portion (50), wherein the brassiere comprises two adjustable shoulder straps, wherein the connecting ring (40) is set on the cup portion (50) and the connecting end (22) is attached to the back strap (60). Based on the length adjustment of the adjustable shoulder strap, the brassiere is to provide a suitable fit for the wearer. In some embodiments, the connecting end (22) is attached to the cup portion (50) and the connecting ring (40) is set on the back strap (60), but the present invention is not limited to these configurations.

To further understand present invention, the present invention provides a manufacturing method of the adjustable shoulder strap, referring to FIGS. 5 to 7, wherein the manufacturing method of the adjustable shoulder strap includes the steps of:

• • A. Stitching and securing one end (21) of a strap body (20) to a fixed column (12) of a brassiere strap adjustment ring (10) on the rear side (111) of the brassiere strap adjustment ring using stitching (30);
  • B. Folding the strap body (20) and passing the other end (22) of the strap body (20) from the rear side (111), on one side (14) of the fixed column (12), through a frame (11) to the front side (112) of the brassiere strap adjustment ring (10);
  • C. Folding the strap body (20) and passing the other end (22) of the strap body (20) from the front side (112), on the other side (13) of the fixed column (12), through the frame (11) to the rear side (111).

Notably, before Step A, the manufacturing method of the adjustable shoulder strap further comprises a step of stamping to form the brassiere strap adjustment ring (10), wherein the brassiere strap adjustment ring (10) comprises the frame (11) and the fixed column (12), wherein the frame body (11) is defined to have a threading space (110), and wherein the fixed column (12) is horizontally placed in the frame (11), dividing the threading space (110) into a first threading hole (13) and a second threading hole (14), wherein the fixed column (12) has at least one threading hole (15) aligned with the opening direction of the first threading hole (13) and the second threading hole (14).

Particularly, during the manufacturing process, the strap body (20) only needs to pass through the first guiding hole (13) and the second guiding hole (14) once, thereby simplifying the steps of the manufacturing process for the adjustable shoulder strap and improving production efficiency.

Notably, in the step B, before the other end (22) of the strap body (20) passes through the frame body (11), further comprising a step where the other end (22) of the strap body (20) passes through a connecting ring (40).

In the description of this specification, references to terms like “one embodiment,” “some embodiments,” “an example,” “a specific example,” or “some examples” mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Throughout this specification, the illustrative descriptions of these terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Additionally, where there is no conflict, those skilled in the art can combine and integrate the different embodiments or examples and the features of different embodiments or examples described in this specification.

Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the invention have been fully and effectively realized. The functions and structural principles of the invention have been shown and described in the embodiments, and without departing from these principles, the invention can be embodied in various forms and modification.