Device for aligning and positioning shoulder strap
By designing positioning and clamping components for the shoulder strap, the problem of the shoulder strap easily wrinkling when bent was solved, achieving accurate positioning and firm fixation of the shoulder strap, and improving bag production efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-03-31
AI Technical Summary
During the bag production process, the upper and lower leather parts of the shoulder strap are prone to wrinkling when bent, resulting in poor fit and affecting the quality of the shoulder strap.
Design a device for aligning and positioning a shoulder strap, including a positioning component and a clamping component. The positioning component aligns and positions the shoulder strap through a positioning block, a groove, a slot, and a positioning line. The clamping component fixes the shoulder strap through a slide rail, a movable frame, a threaded post, and a rubber block.
It achieves accurate positioning and secure fixation of the upper and lower leather parts of the shoulder strap, avoids wrinkling, and improves work efficiency and shoulder strap quality.
Smart Images

Figure CN224060511U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bag shoulder strap production positioning technology, and in particular to a device for shoulder strap alignment and positioning. Background Technology
[0002] Bags can be broadly categorized as containers, ranging from small wallets for carrying money to large suitcases for carrying luggage and clothes, as well as travel bags. With the continuous improvement of people's living standards and consumption levels, shoulder bags are becoming increasingly popular among women.
[0003] Various bags, including shoulder bags and backpacks, typically have shoulder straps made of two layers of leather bonded together, with the upper layer longer than the lower layer. During bag production, after the upper and lower leather layers are cut to a fixed length, they need to be glued together. For better usability, bag shoulder straps have a certain curvature. If the upper and lower leather layers are bonded on a flat surface, the shoulder strap needs to be bent after bonding. Because the leather used for the shoulder strap is soft, the lower layer is prone to wrinkling when bent, and the bonded upper and lower layers can easily separate. Therefore, a method is needed to quickly position the shoulder strap, prevent wrinkling on both sides, and improve the quality of the shoulder strap. Utility Model Content
[0004] The purpose of this invention is to provide a device for aligning and positioning shoulder straps, addressing the issue raised in the background section where various bags, including shoulder bags and backpacks, typically have shoulder straps made of two layers of leather bonded together, with the upper layer longer than the lower layer. During bag production, after cutting the upper and lower leather layers to a fixed length, they need to be glued together. For better usability, the shoulder straps are typically curved. If the upper and lower leather layers are bonded on a flat surface, bending the strap after bonding can cause the lower layer to wrinkle and potentially detach from the bonded layers, due to the soft nature of the leather.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model is a device for aligning and positioning shoulder straps, comprising:
[0007] The positioning component includes a positioning block, a groove, a first slot, and a second slot. The positioning block has two parts, an upper part that is arc-shaped and a lower part that is square. The groove is located on the upper half of the positioning block, the first slot is located at both ends of the groove, and two second slots are located below the corresponding first slots.
[0008] Furthermore, the positioning block has two round holes of different sizes on both sides, and the two ends of the groove have protrusions of 1-3cm in length, which together with the arc surface form the first groove and the second groove.
[0009] Furthermore, a positioning line is provided at the midpoint of the upper surface of the positioning block, and the positioning line extends into the groove.
[0010] Furthermore, it also includes a clamping assembly, which includes a slide rail, a movable frame, threaded holes, threaded posts, and a rubber block. The slide rail is fixed on both sides of the positioning block and located directly below the groove. The movable frame is slidably mounted on the outer surface of the slide rail. Two threaded holes are opened on the upper surface of the movable frame. Two threaded posts are threaded through the corresponding threaded holes. The rubber block is fixed to one end of the threaded post.
[0011] Furthermore, a fixing hole is provided on one side of the slide rail, and a fixing frame is fixed on one side of the movable frame, with a spring fixed inside the fixing frame.
[0012] Furthermore, one end of the spring is fixed with a locking post, and the end of the locking post extends into the fixing hole, and an unlocking groove is provided on the outer surface of the fixing frame.
[0013] Compared with existing technologies, the advantages of this utility model are:
[0014] I. This utility model, through the setting of a positioning block, a round hole, a groove, a first slot, a second slot, and a positioning line, is a device for aligning and positioning a shoulder strap. The upper part is arc-shaped and the lower part is square. The arc-shaped part of the upper part has three strip-shaped grooves. The upper and lower layers of leather of the shoulder strap are attached to the arc-shaped device. The attached shoulder strap can be formed in one step, avoiding wrinkles of the leather. It has the advantages of convenient alignment and positioning, convenient operation, and improved work efficiency. The arc-shaped part of the upper part of the positioning block has three strip-shaped grooves. There is a 1-3cm long protrusion near the end of each groove, which, together with the arc surface, forms the first slot and the second slot. The first slot is used to fix the lower leather part of the shoulder strap, and the second slot is used to fix the upper leather part of the shoulder strap. The two types of slots make it easy to align and fix the upper and lower leather parts of the shoulder strap, which is convenient for shoulder strap production. The positioning block has two round holes of different sizes, which makes it easy to hold and move the positioning device, and also reduces the weight of the device, making it easy to move and convenient for operation on different workbenches. A positioning line is drawn at the midpoint of the top of the positioning block arc for shoulder strap alignment and positioning. Aligning the midpoint of the shoulder strap with the positioning line ensures accurate alignment and positioning of the upper and lower leather parts of the shoulder strap.
[0015] II. Based on the first beneficial effect, by using the set clamping component, after the worker fixes the upper and lower leather layers of the shoulder strap in the groove, the spring is compressed inside the fixed frame from the unlocking groove, causing the locking post to move into the fixed frame. Then, the movable frame is pushed so that the two threaded rods correspond to the first and second locking grooves. When the locking post is aligned with the fixing hole, the spring will quickly return to its original shape under the elastic force of the spring, and the locking post will lock into the fixing hole. Then, the threaded post is rotated, and the threaded post drives the rubber block to move, fixing the upper and lower sides of the shoulder strap in the positioning block, ensuring that the shoulder strap will not loosen or shift during the processing, greatly enhancing the firmness of the shoulder strap fixation. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a first-person perspective schematic diagram of the present invention;
[0018] Figure 2 This is a schematic diagram of the positioning component of this utility model;
[0019] Figure 3 This utility model Figure 1 Enlarged view of point A in the image.
[0020] The following is a list of components represented by each number in the attached diagram:
[0021] 11. Positioning block; 12. Round hole; 13. Groove; 14. First slot; 15. Second slot; 16. Positioning line;
[0022] 21. Slide rail; 211. Fixing hole; 22. Movable frame; 23. Threaded hole; 24. Threaded post; 25. Rubber block; 26. Fixing frame; 261. Unlocking groove; 27. Spring; 28. Locking post. Detailed Implementation
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0027] Please see Figures 1 to 3 As shown, this embodiment is a device for aligning and positioning shoulder straps, comprising:
[0028] The positioning component includes a positioning block 11, a groove 13, a first slot 14 and a second slot 15. The positioning block 11 has two parts, an upper part that is arc-shaped and a lower part that is square. The groove 13 is opened in the upper half of the positioning block 11, the first slot 14 is opened at both ends of the groove 13, and two second slots 15 are opened below the corresponding first slots 14.
[0029] The positioning block 11 has two round holes 12, one large and one small, on both sides, and the groove 13 has protrusions of 1-3cm in length at both ends, which together with the arc surface form the first slot 14 and the second slot 15.
[0030] A positioning line 16 is provided at the midpoint of the upper surface of the positioning block 11, and the positioning line 16 extends into the groove 13;
[0031] The positioning block 11 is the main part of the entire positioning assembly. Its unique shape design is to adapt to the alignment and positioning needs in the shoulder strap manufacturing process. The round hole 12 makes it easy for the operator to hold the positioning block 11. When performing shoulder strap positioning operations, the fingers can pass through the round hole 12, which makes it convenient to move and adjust the position of the positioning block 11, improving the convenience of operation and reducing the weight of the positioning block 11, making it easier to move and use.
[0032] The first slot 14 secures the lower leather piece of the shoulder strap. When making the shoulder strap, after the lower leather piece is placed on the positioning block 11 and fits the curved surface of the groove 13, its edge can be secured by the first slot 14 to prevent the lower leather piece from moving during subsequent operations, ensuring that the position of the lower leather piece of the shoulder strap is accurate. The positioning line 16 provides a clear reference standard for the alignment and positioning of the shoulder strap.
[0033] Working principle:
[0034] The positioning block 11 is a device for aligning and positioning the shoulder strap. The upper part is arc-shaped and the lower part is square. The arc-shaped part of the upper part has three strip-shaped grooves 13. The upper and lower leather parts of the shoulder strap are attached to the arc-shaped device. The attached shoulder strap can be formed in one step, avoiding wrinkles of the leather parts. It has the advantages of convenient alignment and positioning, convenient operation, and improved work efficiency. The arc-shaped part of the upper part of the positioning block 11 has three strip-shaped grooves 13. There is a 1-3cm long protrusion at both ends of the groove 13 near the end, which forms a first groove 14 and a second groove 15 with the arc surface. The first slot 14 is used to fix the lower leather part of the shoulder strap, and the second slot 15 is used to fix the upper leather part of the shoulder strap. The two slots are set to facilitate the alignment and fixing of the upper and lower leather parts of the shoulder strap, which is convenient for shoulder strap production. The positioning block 11 has two round holes 12 of different sizes. On the one hand, it is easy to hold and move the positioning device. On the other hand, it reduces the weight of the device and makes it easy to move and work on different workbenches. A positioning line 16 is drawn at the midpoint of the top of the arc of the positioning block 11 for shoulder strap alignment and positioning. The midpoint of the shoulder strap is aligned with the positioning line 16 to ensure accurate alignment and positioning of the upper and lower leather parts of the shoulder strap.
[0035] This step improves the precision and efficiency of shoulder strap production and provides convenience for operators, making it easier to produce high-quality shoulder straps.
[0036] Please see Figures 1 to 3 As shown; this embodiment, based on the above embodiment, further includes:
[0037] The clamping assembly includes a slide rail 21, a movable frame 22, threaded holes 23, threaded posts 24, and a rubber block 25. The slide rail 21 is fixed on both sides of the positioning block 11 and located directly below the groove 13. The movable frame 22 is slidably mounted on the outer surface of the slide rail 21. Two threaded holes 23 are opened on the upper surface of the movable frame 22. Two threaded posts 24 are threaded through the corresponding threaded holes 23. The rubber block 25 is fixed to one end of the threaded post 24.
[0038] A fixing hole 211 is provided on one side of the slide rail 21, and a fixing frame 26 is fixed on one side of the movable frame 22. A spring 27 is fixed inside the fixing frame 26.
[0039] One end of the spring 27 is fixed with a locking post 28, and the end of the locking post 28 extends into the fixing hole 211. The outer surface of the fixing frame 26 is provided with an unlocking groove 261.
[0040] The slide rail 21 provides stable support and precise motion guidance for the movable frame 22. The movable frame 22 acts as a bridge connecting the slide rail 21 and the threaded post 24. The threaded hole 23 is used for threaded connection with the threaded post 24. The fixing hole 211 is used to cooperate with the locking post 28 to achieve the initial positioning of the movable frame 22. When the locking post 28 is aligned with the fixing hole 211 and the spring 27 is compressed, the locking post 28 quickly locks into the fixing hole 211 under the elastic force of the spring 27, realizing the rapid locking of the movable frame 22 in the lateral position.
[0041] Working principle:
[0042] After the staff fixes the upper and lower leather layers of the shoulder strap in the groove 13, they compress the spring 27 inside the fixed frame 26 from the unlocking groove 261, causing the locking post 28 to move into the fixed frame 26. Then, they push the movable frame 22 so that the two threaded posts 24 correspond to the first locking groove 14 and the second locking groove 15. When the locking post 28 is aligned with the fixing hole 211, the spring 27 will quickly recover its deformation under the elastic force of the spring 27, and the locking post 28 will be locked into the fixing hole 211. Then, the threaded post 24 is rotated, and the threaded post 24 drives the rubber block 25 to move, fixing the upper and lower sides of the shoulder strap in the positioning block 11.
[0043] This step ensures that the shoulder strap will not loosen or shift during processing, greatly enhancing the stability of the shoulder strap.
[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A device for shoulder strap alignment positioning, characterized by, Include: Positioning assembly, the positioning assembly includes positioning block (11), groove (13), first clamping groove (14) and second clamping groove (15), the positioning block (11) is two parts, the upper part is circular arc type, the lower part is square, and the groove (13) is opened in the upper half of the positioning block (11), the first clamping groove (14) is opened in both ends of the groove (13), and two second clamping grooves (15) are opened below the corresponding first clamping groove (14).
2. A device for alignment positioning of shoulder straps according to claim 1, characterized in that Two round holes (12) are opened in the two sides of the positioning block (11), and the two ends of the groove (13) have a length of 1-3cm protrusion, and the circular arc surface constitutes the first clamping groove (14), the second clamping groove (15).
3. A device for alignment positioning of shoulder straps according to claim 2, characterized in that The midpoint of the upper surface of the positioning block (11) is provided with a positioning line (16), and the positioning line (16) extends into the groove (13).
4. A device for alignment positioning of shoulder straps according to claim 1, characterized in that, It also includes a compression assembly, the compression assembly includes slide rail (21), movable frame (22), threaded hole (23), threaded column (24) and rubber block (25), the slide rail (21) is fixed on both sides of the positioning block (11), and is located directly below the groove (13), the movable frame (22) is slidably installed on the outer surface of the slide rail (21), two threaded holes (23) are opened on the upper surface of the movable frame (22), two threaded columns (24) are screwed into the corresponding threaded holes (23) inside, and the rubber block (25) is fixed on one end of the threaded column (24).
5. A device for alignment positioning of shoulder straps according to claim 4, characterized in that One side of the slide rail (21) is provided with a fixed hole (211), one side of the movable frame (22) is fixedly provided with a fixed frame (26), and the inside of the fixed frame (26) is fixedly provided with a spring (27).
6. A device for alignment positioning of shoulder straps according to claim 5, characterized in that One end of the spring (27) is fixedly provided with a clamping column (28), and the end of the clamping column (28) extends into the inside of the fixed hole (211), and the outer surface of the fixed frame (26) is provided with an unlocking groove (261).