One-piece molded hinge buckle

Abstract

This utility model discloses an integrally molded hinged buckle. The hinged buckle includes a strap seat and a hinge body; the strap seat has a hinge cavity and a webbing slot, and the hinge body is placed inside the lower end of the hinge cavity of the strap seat and has a hinge portion. The lower part of the hinge body can be configured as a second webbing slot or a hook structure. The top of the hinge cavity has a telescopic groove, the middle of the hinge cavity has a limiting rib, and a connecting part is provided in the telescopic groove to connect with the hinge body; the lower part of the hinge cavity has a longitudinal through groove and a transverse through groove, the overlapping part of which forms a hinge hole at the center of the bottom of the hinge cavity. The hinge portion includes a hinge shaft extending upward from the axis of the main hook ring seat, a relatively large-diameter hinge post located at the upper end of the hinge shaft, and a telescopic rib located at the upper end of the hinge post corresponding to the telescopic groove. After molding, by rotating the strap seat and the hinge body relative to each other and unscrewing the connecting part, the hinge post can be rotatably engaged above the limiting rib, thus realizing an applicable hinge between the hinge cavity and the hinge portion.

Description

Technical Field

[0001] This utility model relates to the field of fasteners, and more particularly to hinged fasteners. Background Technology

[0002] Existing backpacks, safety leashes, pet leashes, and other carrying systems or webbing connection mechanisms that require hinges typically use an embedded interference fit, utilizing the instantaneous plasticity of metal or plastic materials to embed the hook hinge into the hook seat. This hinge structure has several drawbacks: metal parts are prone to corrosion in humid environments, leading to rotational jamming, and are easily loosened after rusting or wear; plastic inserts are prone to deformation and failure, posing a risk of accidental detachment. Summary of the Invention

[0003] To overcome the aforementioned deficiencies of the prior art, this utility model provides an integrally molded hinge buckle through innovations in product structure and manufacturing molds.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: This utility model includes a strap seat and a hinge body, and the hinge body is rotatably disposed at the lower end of the strap seat.

[0005] The strap seat has a hinge cavity at one end and a webbing slot at the other end; the top of the hinge cavity has a telescopic groove, the middle of the hinge cavity has a limiting rib, and the telescopic groove has a connecting part that connects to the hinge body; the lower part of the hinge cavity has a longitudinal through groove, and a transverse through groove is provided in a direction perpendicular to the bottom surface of the longitudinal through groove. The transverse through groove passes through the buckle laterally, and the longitudinal through groove passes through the buckle longitudinally; the top surface of the transverse through groove and the bottom surface of the longitudinal through groove are on the same horizontal plane, so the overlapping part, i.e., the center of the bottom of the hinge cavity, forms a hinge hole; the middle of the top of the hinge cavity is the connecting part in the telescopic groove.

[0006] The hinge body has a main hook body, with a spring-loaded protective block inside the main hook body and a shaping groove on the outside of the main hook body. A side hook tip is located at the hook opening of the main hook body. A main hook body ring seat is located at the top of the main hook body, with a limiting rib and a hinge part on the upper part of the ring seat. An elastic hook piece is located on the opposite side of the main hook body at the lower part of the ring seat. A limiting block is located at the other end of the elastic hook piece. During injection molding, the limiting block is positioned outside the side hook tip to create outward prestress. In use, the limiting block is placed against the inside of the side hook tip, and the middle of the elastic hook piece is pressed. The limiting block separates from the side hook tip, creating an opening through which the hooked object is inserted. The elastic hook piece utilizes the elasticity of the plastic to achieve pressing-to-unlock and automatic reset. The spring-loaded protective block inside the main hook body limits the range of pressure applied to the elastic hook piece, preventing excessive pressure that could cause it to malfunction or break. When an object is hooked, the limiting block presses and limits the object inserted into the main hook body.

[0007] The upper part of the hinge body is provided with a hinge portion that mates with the hinge cavity. The hinge portion includes a hinge shaft extending upward from the axial position, a relatively large-diameter hinge post located at the upper end of the hinge shaft, and a telescopic rib located at the upper end of the hinge post corresponding to the telescopic groove. The connecting part connects the telescopic groove and the telescopic rib in the middle. The upper part of the webbing slot in the strap seat is provided with a glue inlet. The cross-section of the connecting part is larger than the cross-section of the glue inlet. During injection molding, the high-temperature molten resin can be more easily injected from the strap seat cavity to the hinge body cavity through the connecting part. Furthermore, the shaping groove on the outside of the main hook body can adjust the thickness of the main hook body without reducing the structural strength of the main hook body, preventing shrinkage and stress concentration during the pressure holding and cooling process. After molding, since the hinge hole and the hinge shaft are directly connected without adhesion, only the connecting part is adhered between the strap seat and the hinge body. By rotating the strap seat and the hinge body relative to each other and unscrewing the connecting part, the hinge post can be rotatably locked above the limiting rib, thus realizing the practical hinge between the hinge cavity and the hinge portion.

[0008] The hinge portion is provided with limiting ribs on both sides. During injection molding, the limiting ribs are located in the transverse through groove and the telescopic ribs are located in the telescopic groove. After molding and after the connection is broken, the telescopic groove and the telescopic ribs can rotate and press against each other. At the same time, the limiting ribs and the bottom surfaces on both sides of the transverse through groove can also rotate and press against each other. This can prevent the hinge body from swinging significantly when it rotates, thus ensuring the stability of the hinge.

[0009] The hinge body of this utility model can also be configured as a combination of a second webbing slot and a hinge part, used to connect two webbings and realize a rotation hinge through the hinge part.

[0010] The beneficial effects of implementing the above technical solution are as follows: the two interlocking parts, the strap seat and the hinge body, are formed in one piece, eliminating the need for a forced insertion assembly process, thus improving production efficiency; the overlapping force-bearing area of ​​the hinge column and the limiting rib can be designed and manufactured according to the product's usage requirements to ensure the hinge part is stable under force; this utility model completely overcomes the defects of existing metal and plastic hooks and buckles that are not firmly hinged and are prone to detachment, and greatly improves production efficiency. Attached Figure Description

[0011] Figure 1 This is the upper left side view of this utility model; Figure 2 This is the lower left side view of this utility model; Figure 3 This is the front view of this utility model; Figure 4 This is a rear view of the present invention; Figure 5 yes Figure 3 Schematic diagram of the AA section; Figure 6 yes Figure 5 Schematic diagram of the BB cross section; Figure 7 This is a cross-sectional schematic diagram of another embodiment of the present invention.

[0012] The labels in the diagram indicate: 1-Strap seat, 11-Hinge cavity, 111-Telescopic groove, 112-Limiting rib, 12-Webbing slot, 13-Transverse through groove, 14-Vertical through groove, 15-Connecting part, 16-Hinge hole; 2-Hinge body, 21-Main hook body, 211-Shaping groove, 22-Spring protection block, 23-Hook tip, 24-Limiting block, 25-Elastic hook piece, 26-Main hook body ring seat, 27-Limiting rib, 28-Hinge part, 281-Hinge shaft, 282-Hinge post, 283-Telescopic rib, 29-Second webbing slot. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and embodiments, further illustrates this utility model: like Figures 1 to 6 As shown, the one-piece molded fastener provided by this utility model includes a strap seat 1 and a hinge body 2. The hinge body 2 is rotatably disposed at the lower end of the strap seat 1. One end of the strap seat 1 is provided with a hinge cavity 11, and the other end of the strap seat 1 is provided with a webbing slot 12. The top of the hinge cavity 11 is provided with a telescopic groove 111, and the middle of the hinge cavity 11 is provided with a limiting rib 112. A connecting part 15 is provided in the telescopic groove 111 to connect with the hinge body 2. The lower part of the hinge cavity 11 is provided with a longitudinal through groove 14, and a transverse through groove 13 is provided in a direction perpendicular to the bottom surface of the longitudinal through groove 14. The transverse through groove 13 passes through the fastener laterally, and the longitudinal through groove 14 passes through the fastener longitudinally. The top surface of the transverse through groove 13 and the bottom surface of the longitudinal through groove 14 are on the same horizontal plane. Therefore, the overlapping part, i.e., the center of the bottom of the hinge cavity 11, forms a hinge hole 16. The middle of the top of the hinge cavity 11 is provided with a connecting part 15.

[0014] The lower part of the hinge body 2 is provided with a main hook body 21. A spring-loaded protective block 22 is provided on the inner side of the main hook body 21, and a shaping groove 211 is provided on the outer side of the main hook body 21. A side hook tip 23 is provided at the hook opening of the main hook body 21. A main hook body ring seat 26 is provided at the top of the main hook body 21. An elastic hook piece 25 is provided on the opposite side of the main hook body 21 at the lower part of the main hook body ring seat 26. A limiting block 24 is provided at the other end of the elastic hook piece 25. During injection molding, the limiting block 24 is located outside the side hook tip 23 to form an outward-opening prestress. In use… The limiting block 24 is attached to the inside of the side hook tip 23. The middle of the elastic hook piece 25 is pressed, and the limiting block 24 separates from the side hook tip 23, creating an opening. The hooked object is hooked through this opening. The elastic hook piece 25 uses the elasticity of the plastic itself to achieve pressing to unlock and automatic reset. The spring protection block 22 located inside the main hook body 2 can limit the range of pressing the elastic hook piece 25 to prevent excessive pressing from causing the elastic hook piece 25 to fail or break. When there is a hooked object, the limiting block 24 presses and limits the object hooked into the main hook body 21.

[0015] The upper part of the hinge body 2 is provided with a hinge part 28 that cooperates with the hinge cavity 11. The hinge part 28 includes a hinge shaft 281 extending upward at the axial position, a hinge post 282 with a relatively large diameter disposed at the upper end of the hinge shaft 281, and a telescopic rib 283 disposed at the upper end of the hinge post 282 corresponding to the telescopic groove 111. The connecting part 15 is connected to the middle of the telescopic groove 111 and the telescopic rib 283. The upper part of the webbing slot 12 in the strap seat 1 and the connecting part 15 are provided with glue inlet points. The cross-section of the connecting part 15 is larger than the cross-section of the glue inlet point. During molding, the high-temperature molten resin can be more easily injected from the cavity of the strap seat 1 to the cavity of the hinge body 2 through the connecting part 15. In addition, the shaping groove 211 on the outside of the main hook body 21 can adjust the thickness of the main hook body 21 without reducing the structural strength of the main hook body 21, preventing shrinkage and stress concentration during the pressure holding and cooling process. After molding, since the hinge hole 16 and the hinge shaft 281 are directly connected without adhesion, only the connecting part 15 is adhered between the strap seat 1 and the hinge body 2. After rotating the strap seat 1 and the hinge body 2 and unscrewing the connecting part 15, the hinge post 282 can be rotatably locked above the limiting rib 112, so as to realize the application of the hinge between the hinge cavity 11 and the hinge part 28.

[0016] The hinge portion 28 is provided with limiting ribs 27 on both sides. During molding, the limiting ribs 27 are located in the transverse through groove 13, and the telescopic ribs 283 are located in the telescopic groove 111. After molding and after the connecting portion 15 is disconnected, the telescopic groove 111 and the telescopic ribs 283 can rotate and press against each other. At the same time, the limiting ribs 27 and the bottom surfaces on both sides of the transverse through groove 13 can also rotate and press against each other. This can prevent the hinge body 2 from swinging significantly while allowing the hinge body 2 to rotate, thus ensuring the stability of the hook.

[0017] like Figure 7As shown, the hinge body 2 of this utility model can also be configured as a combination of the second webbing slot 29 and the hinge part 28, used to connect two webbings and realize rotational hinge through the hinge part.

[0018] The beneficial effects of implementing the above technical solution are as follows: the two interlocking parts, the strap seat 1 and the hinge body 2, are formed in one piece, eliminating the need for a forced insertion assembly process, thus improving production efficiency; the overlapping force-bearing area of ​​the hinge post 282 and the limiting rib 112 can be designed and manufactured according to the product's usage requirements to ensure the hinge part is stable under force; this utility model completely overcomes the defects of existing metal and plastic hooks and buckles that are not firmly hinged and are prone to detachment, and greatly improves production efficiency.

[0019] Although the present invention has been described and illustrated by reference to embodiments, those skilled in the art should understand that various changes in form and detail may be made within the scope of the claims. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A one-piece molded hinged buckle, comprising a strap seat (1) and a hinge body (2), wherein the hinge body (2) is rotatably disposed at the lower end of the strap seat (1); characterized in that: The strap seat (1) has a hinge cavity (11) at one end and a webbing slot (12) at the other end; the hinge cavity (11) has a telescopic groove (111) at the top and a limiting rib (112) in the middle; the telescopic groove (111) has a connecting part (15) connected to the hinge body (2); the hinge cavity (11) has a longitudinal through groove (14) at the bottom and a transverse through groove (13) perpendicular to the longitudinal through groove (14) at the bottom; the transverse through groove (13) passes through the buckle laterally and the longitudinal through groove (14) passes through the buckle longitudinally; the top surface of the transverse through groove (13) and the bottom surface of the longitudinal through groove (14) are on the same horizontal plane, so the overlapping part, i.e., the center of the bottom of the hinge cavity (11), forms a hinge hole (16); the hinge body (2) has a connecting part at the top and a connecting part at the bottom of the hinge cavity (11). The hinge part (28) is designed to fit together. The hinge part (28) includes a hinge shaft (281) extending upward from the axial position, a hinge post (282) with a relatively large diameter set at the upper end of the hinge shaft (281), and a telescopic rib (283) corresponding to the telescopic groove (111) set at the upper end of the hinge post (282). The connecting part (15) is connected to the middle of the telescopic groove (111) and the telescopic rib (283). After forming, the hinge shaft (281) passes directly through the hinge hole (16) without adhesion. Only the connecting part (15) is adhered between the strap seat (1) and the hinge body (2). After rotating the strap seat (1) and the hinge body (2) relative to each other and unscrewing the connecting part (15), the hinge post (282) can be rotatably snapped onto the upper part of the limiting rib (112), so that the application hinge between the hinge cavity (11) and the hinge part (28) can be realized.

2. The integrally formed hinge buckle according to claim 1, characterized in that, The lower part of the hinge body (2) is provided with a main hook body (21), the inner side of the main hook body (21) is provided with a spring protection block (22), and the hook opening of the main hook body (21) is provided with a side hook tip (23); the top of the main hook body (21) is provided with a main hook body ring seat (26), and the lower part of the main hook body ring seat (26) is provided with an elastic hook piece (25) on the other side opposite to the main hook body (21), and the elastic hook piece (25) has a limit block (24).

3. The integrally formed hinge buckle according to claim 2, characterized in that, A shaping groove (211) is provided on the outer side of the main hook body (21).

4. The integrally formed hinge buckle according to claim 1, characterized in that, Limiting ribs (27) are provided on both sides of the hinge (28). During molding, the limiting ribs (27) are located in the transverse through groove (13), and the telescopic ribs (283) are located in the telescopic groove (111). After molding, and after the connecting part (15) is disconnected, the telescopic groove (111) and the telescopic ribs (283) can rotate and press against each other. The limiting ribs (27) and the bottom surfaces on both sides of the transverse through groove (13) can also rotate and press against each other. When the hinge body (2) rotates, it prevents the hinge body (2) from swinging significantly.

5. The integrally formed hinge buckle according to claim 1, characterized in that, The connecting part (15) is connected to the middle of the expansion groove (111) and the expansion rib (283). The upper part of the webbing slot (12) in the strap seat (1) is provided with an adhesive inlet. The cross-section of the connecting part (15) is larger than the cross-section of the adhesive inlet.

6. The integrally formed hinge buckle according to claim 2, characterized in that, The limiting block (24) is located outside the side hook tip (23) during injection molding to form an outward opening prestress; in use, the limiting block (24) is attached to the inside of the side hook tip (23), and the middle of the elastic hook piece (25) is pressed. The limiting block (24) separates from the side hook tip (23), and an opening appears. The hooked object is hooked through the opening. The elastic hook piece (25) uses the elasticity of the plastic itself to achieve pressing to unlock and automatic reset.

7. The integrally formed hinge buckle according to claim 1, characterized in that, The hinge body (2) is a combination of a second webbing slot (29) and a hinge part (28) for connecting two webbings and achieving rotational hinge through the hinge part.

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