latch device

Abstract

This application relates to the field of locking technology, disclosing a locking device including a first lock, a second lock, and a first connector. The first lock has a mounting groove and a first through hole, the first through hole connecting the side of the mounting groove to the outside, and a first limiting part on the inner wall of the first through hole. The second lock has a fixing post, which is inserted into the mounting groove and has a snap-fit ​​groove. The first connector is disposed in the first through hole and at least partially inserted into the snap-fit ​​groove to hold the fixing post within the mounting groove. The first connector is connected to the first limiting part, keeping the first connector within the first through hole. The above-described structure of the locking device of this application is simple to assemble, does not cause damage or deformation to the mounting groove of the first lock, and the first connector can be firmly held in the first through hole, achieving snap-fit ​​locking of the fixing post of the second lock, making the overall structure stable and improving the safety performance of the locking device.

Description

Technical Field

[0001] This application relates to the field of locking technology, and in particular to a locking device. Background Technology

[0002] In outdoor activities such as mountaineering and rock climbing, or when working at heights, ropes and carabiners are typically used to suspend users or objects in the air to cross obstacles or transport goods. Therefore, carabiners need to withstand significant weight, and their safety performance is paramount; weakly constructed carabiners can easily lead to accidents. Utility Model Content

[0003] This application provides a locking device that can effectively enhance its structural strength, thereby improving its safety performance.

[0004] In some embodiments, the locking device includes a first latch, a second latch, and a first connector. The first latch has a mounting groove and a first through hole, the first through hole communicating with the side of the mounting groove and the outside, and the inner wall of the first through hole has a first limiting portion; the second latch has a fixing post, the fixing post being inserted into the mounting groove, and the fixing post having a snap-fit ​​groove; the first connector is disposed in the first through hole and at least partially inserted into the snap-fit ​​groove to retain the fixing post in the mounting groove, and the first connector is connected to the first limiting portion to retain the first connector in the first through hole.

[0005] In some embodiments, the first limiting part includes a first boss, which protrudes from the inner wall of the first through hole and abuts against the first connector; or, the first limiting part includes a first groove, which is recessed from the inner wall of the first through hole, and the first connector is provided with a second boss, which is engaged with the first groove.

[0006] In some embodiments, the diameter of the fixing post is slightly smaller than the diameter of the mounting groove; the width of the first through hole is greater than the width of the mounting groove along the radial direction of the fixing post, and the snap-fit ​​groove is aligned with the first through hole along the axial direction of the fixing post, with a portion of the first connector located simultaneously in the snap-fit ​​groove and the first through hole.

[0007] In some embodiments, the first connector includes a semi-circular portion, a first straight portion and a second straight portion, the first straight portion being connected to one end of the semi-circular portion and the second straight portion being connected to the other end of the semi-circular portion, and the semi-circular portion being inserted into a snap-fit ​​groove.

[0008] In some embodiments, the first limiting portion is disposed near the opening of the first through hole, and along the insertion direction of the first connector, the two sides of the semi-circular portion abut against the fixing post and the first limiting portion, respectively.

[0009] In some embodiments, along the radial direction of the fixing post, the side of the first straight portion opposite to the second straight portion abuts against the inner wall of the first through hole; and / or, along the radial direction of the fixing post, the side of the second straight portion opposite to the first straight portion abuts against the inner wall of the first through hole.

[0010] In some embodiments, along the axial direction of the fixing post, both sides of the first straight portion abut against the inner wall of the first through hole; and / or, along the axial direction of the fixing post, both sides of the second straight portion abut against the inner wall of the first through hole.

[0011] In some embodiments, a guide surface is provided at the opening of the first through hole. The guide surface is inclined and along the axial direction of the fixed column. The guide surface and the first limiting part are located on the upper and lower sides of the first through hole, respectively.

[0012] In some embodiments, at least the mounting groove of the first latch is defined by a metal material; and / or, at least the snap-fit ​​groove of the second latch is defined by a metal material; and / or, the first connector comprises a metal material.

[0013] The beneficial effects of this application's embodiments are as follows: The locking device of this application directly connects the fixing post of the second lock to the mounting groove of the first lock, rather than using an interference fit. This avoids compression deformation of the mounting groove. Furthermore, the first connecting member is inserted through the first through hole on the side, allowing it to engage with the snap-fit ​​groove on the fixing post. Axially, the first connecting member snaps the fixing post into the mounting groove, preventing the first and second locks from separating and achieving a fixed connection. A first limiting part is provided on the first through hole to limit and fix the first connecting member, preventing it from dislodging from the first through hole. The above-described structure of the locking device of this application is simple to assemble, does not damage or deform the mounting groove of the first lock, and the first connecting member can be firmly held in the first through hole, achieving snap-fit ​​locking of the fixing post of the second lock. This makes the overall structure stable and improves the safety performance of the locking device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram of the existing locking device 100A before assembly;

[0016] Figure 2 This is a schematic diagram of the existing locking device 100A after assembly;

[0017] Figure 3This is a schematic diagram of the locking device before assembly according to an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the assembled locking device according to an embodiment of this application;

[0019] Figure 5 yes Figure 4 A sectional view of the assembly front edge AA of the central locking device;

[0020] Figure 6 yes Figure 4 A cross-sectional view along AA after the central locking device is assembled;

[0021] Figure 7 yes Figure 4 A cross-sectional view of the first latch of the central locking device along BB;

[0022] Figure 8 This is a schematic diagram from another perspective of the assembled locking device according to an embodiment of this application;

[0023] Figure 9 yes Figure 8 A cross-sectional view along CC after the central locking device is assembled;

[0024] Figure 10 yes Figure 8 A cross-sectional view along CC of the locking device after assembly in another embodiment. Detailed Implementation

[0025] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0027] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0028] Please see Figure 1 and Figure 2 , Figure 1 A schematic diagram of the locking device 100A in the prior art before assembly is shown. Figure 2 A schematic diagram of the assembled locking device 100A in the prior art is shown. The locking device 100A includes a male locking device 10A and a female locking device 20A. The male locking device 10A has a conical mushroom-shaped head 11A, and the female locking device 20A has a locking position 21A. The female locking device 20A is made of plastic. When the conical mushroom-shaped head 11A of the male locking device 10A is inserted into the locking position 21A of the female locking device 20A, the locking position 21A of the female locking device 20A is briefly deformed by an interference fit, thereby allowing the conical mushroom-shaped head 11A to pass through the locking position 21A to achieve a locking connection. The above structure has at least the following problem: the locking position 21A of the female locking device 20A is deformed and damaged, causing the male locking device 10A to easily disengage from the locking position 21A under force, resulting in the separation of the two.

[0029] Based on the above issues, please refer to Figures 3 to 7 This application provides an embodiment of a locking device 100, which includes a first locking device 10, a second locking device 20, and a first connecting member 30. The first locking device 10 has a mounting groove 11 and a first through hole 12. The first through hole 12 connects the side of the mounting groove 11 to the outside, and the inner wall of the first through hole 12 has a first limiting portion 13. The second locking device 20 has a fixing post 21, which is inserted into the mounting groove 11 and has a snap-fit ​​groove 22. The first connecting member 30 is disposed in the first through hole 12 and at least partially inserted into the snap-fit ​​groove 22 to retain the fixing post 21 within the mounting groove 11. The first connecting member 30 is connected to the first limiting portion 13 to retain the first connecting member 30 within the first through hole 12.

[0030] The locking device 100 of this application directly connects the fixing post 21 of the second locking 20 to the mounting groove 11 of the first locking 10 by insertion, rather than by interference fit. This avoids the compression deformation of the mounting groove 11. In addition, the first connector 30 is inserted from the first through hole 12 on the side, so that the first connector 30 is inserted into the snap-fit ​​groove 22 on the fixing post 21. In the axial direction of the fixing post 21, the first connector 30 snaps and fixes the fixing post 21 in the mounting groove 11, preventing the first locking 10 and the second locking 20 from separating from each other, and realizing the fixed connection between the two. Furthermore, a first limiting part 13 is provided on the first through hole 12 to limit and fix the first connector 30, preventing the first connector 30 from coming out of the first through hole 12. The locking device 100 of this application has a simple assembly structure that will not damage or deform the mounting groove 11 of the first locking device 10, and the first connecting member 30 can be firmly held in the first through hole 12 to achieve the snap-locking of the fixing post 21 of the second locking device 20, so that the overall structure is stable and the safety performance of the locking device 100 is improved.

[0031] In some embodiments, please refer to Figure 5 and Figure 7 The first limiting part 13 includes a first boss 131, which protrudes from the inner wall of the first through hole 12 and abuts against the first connector 30. During the insertion of the first connector 30 into the first through hole 12, a small deformation occurs in a part of the first connector 30, and it crosses the first boss 131. Afterward, the first connector 30 returns to its original deformation and abuts against the first boss 131. This allows the first boss 131 to prevent the first connector 30 from exiting the first through hole 12, and the first connector 30 remains in the first through hole 12, stably engaging with the locking groove 22.

[0032] In other embodiments, the first limiting part 13 includes a first groove (not shown), which is recessed from the inner wall of the first through hole 12. The first connecting member 30 is provided with a second protrusion 32, which is engaged with the first groove, thus keeping the first connecting member 30 within the first through hole 12. Alternatively, in other embodiments, the first limiting part 13 can be a first protrusion 131, and the first connecting member 30 can be provided with a second protrusion 32, which are engaged with each other. It is understood that the number of first limiting parts 13 can be one, two, or more.

[0033] In some embodiments, please refer to Figure 6The diameter of the fixing post 21 is slightly smaller than the diameter of the mounting groove 11. This allows the fixing post 21 to be smoothly inserted into the mounting groove 11 without squeezing it, and the two are connected by a clearance fit. On the other hand, if the diameter of the fixing post 21 is too different from the diameter of the mounting groove 11, the fixing post 21 will wobble too much in the mounting groove 11, affecting the stability of the connection between the first latch 10 and the second latch 20.

[0034] Please see Figure 5 and Figure 6 Along the radial direction of the fixing post 21, the width of the first through hole 12 is greater than the width of the mounting groove 11, and along the axial direction of the fixing post 21, the snap-fit ​​groove 22 is aligned with the first through hole 12, so that a portion of the first connector 30 is simultaneously located in the snap-fit ​​groove 22 and the first through hole 12. In this way, the first connector 30 can lock the fixing post 21 in the mounting groove 11 in the axial direction of the fixing post 21, preventing the fixing post 21 from coming out of the mounting groove 11.

[0035] In some embodiments, please refer to Figure 8 and Figure 9 The first connector 30 includes a semi-circular portion 31, a first straight portion 32, and a second straight portion 33. The first straight portion 32 is connected to one end of the semi-circular portion 31, and the second straight portion 33 is connected to the other end of the semi-circular portion 31. The semi-circular portion 31 is inserted into the locking groove 22. The first connector 30 has a U-shaped structure. Please refer to [reference needed] during the insertion of the first connector 30 into the first through hole 12. Figure 10 Compared to the C-shaped connector, which requires deformation to engage with the fixing post 21 and necessitates a deformation space D within the first through hole 12, potentially causing the first connector 30 and the fixing post 21 to wobble within the first through hole 12 and mounting groove 11, the U-shaped first connector 30 has a larger opening, allowing direct insertion into the locking groove 22 of the fixing post 21 without requiring a deformation space D within the first through hole 12. This ensures the U-shaped first connector 30 fits snugly against the sidewall of the first through hole 12, preventing wobble and ensuring effective engagement with the fixing post 21. In addition, during the process of inserting the first connector 30 into the first through hole 12, the first straight part 32 and the second straight part 33 slide against the side wall of the first through hole 12 respectively, which has a guiding and positioning effect on the first connector 30, so that the first connector 30 can move in the first through hole 12 without deflection and smoothly engage with the locking groove 22 of the fixing post 21.

[0036] In some embodiments, please refer to Figure 8 and Figure 9Along the radial direction of the fixing post 21, the side of the first straight portion 32 opposite to the second straight portion 33 abuts against the inner wall of the first through hole 12; and / or, along the radial direction of the fixing post 21, the side of the second straight portion 33 opposite to the first straight portion 32 abuts against the inner wall of the first through hole 12; and / or, along the axial direction of the fixing post 21, both sides of the first straight portion 32 abut against the inner wall of the first through hole 12; and / or, along the axial direction of the fixing post 21, both sides of the second straight portion 33 abut against the inner wall of the first through hole 12. When the first connecting member 30 is inserted into the first through hole 12, the first connecting member 30 abuts against at least one of the inner wall surfaces of the left and right sides and the upper and lower sides of the first through hole 12, which helps to fix the first connecting member 30 in the first through hole 12 and reduce its shaking amplitude.

[0037] In some embodiments, please refer to Figure 7 A guide surface 14 is provided at the opening of the first through hole 12, and the guide surface 14 is inclined. Specifically, along the direction of the mounting groove 11 pointing to the opening of the first through hole 12, the guide surface 14 makes the axial dimension of the first through hole 12 gradually increase, which facilitates the quick insertion of the first connector 30 into the first through hole 12, reduces the assembly difficulty, and improves the assembly efficiency.

[0038] When the first through hole 12 has a guide surface 14 on only one side in the axial direction, the guide surface 14 and the first limiting part 13 are located on the upper and lower sides of the first through hole 12 respectively along the axial direction of the fixing post 21. As one embodiment, the first limiting part 13 is a first boss 131. During the process of inserting the first connector 30 into the first through hole 12, the end of the first straight part 32 and the end of the second straight part 33 first contact the guide surface 14. Under the guidance of the guide surface 14, the first straight part 32 and the second straight part 33 enter the first through hole 12 until the inner side of the semi-circular part 31 abuts against the first boss 131. The force continues to be applied to push the first connector 30 forward. The semi-circular part 31 deforms in the axial direction toward the guide surface 14 until it crosses the first boss 131 and then recovers its deformation, so that the inner side of the semi-circular part 31 abuts against the locking groove 22 and the outer side of the semi-circular part 31 abuts against the first boss 131, preventing the first connector 30 from sliding out of the first through hole 12.

[0039] With the guide surface 14 and the first limiting part 13 located on the upper and lower sides of the first through hole 12 respectively, the guide surface 14 not only has a guiding function, but also provides space for the first connecting member 30 to deform, facilitating the smooth insertion of the first connecting member 30 into the first through hole 12. Of course, in some other embodiments, guide surfaces 14 can be provided on both the upper and lower sides of the first through hole 12 along the axial direction.

[0040] To enhance the connection strength between the first latch 10 and the second latch 20, at least the mounting groove 11 of the first latch 10 is defined by a metal material; and / or, at least the snap-fit ​​groove 22 of the second latch 20 is defined by a metal material; and / or, the first connector 30 comprises a metal material. This further improves the wear resistance between the first connector 30 and the first latch 10 and the second latch 20, effectively extending their service life. Furthermore, the entire first latch 10, the entire second latch 20, and the entire first connector 30 are made of metal.

[0041] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A locking device, characterized in that, include: The first latch has a mounting groove and a first through hole. The first through hole connects the side of the mounting groove to the outside. The inner wall of the first through hole has a first limiting part. The second latch is provided with a fixing post, which is plugged into the mounting groove, and the fixing post is provided with a snap-fit ​​groove; A first connector is disposed in the first through hole and is at least partially inserted into the snap-fit ​​groove to hold the fixing post in the mounting groove. The first connector is connected to the first limiting part so that the first connector is held in the first through hole.

2. The locking device according to claim 1, characterized in that, The first limiting part includes a first boss, which protrudes from the inner wall of the first through hole and abuts against the first connecting member. or, The first limiting part includes a first groove, which is recessed from the inner wall of the first through hole. The first connector is provided with a second boss, which is engaged with the first groove.

3. The locking device according to claim 2, characterized in that, The diameter of the fixing post is slightly smaller than the diameter of the mounting groove; Along the radial direction of the fixing post, the width of the first through hole is greater than the width of the mounting groove, and along the axial direction of the fixing post, the snap-fit ​​groove is aligned with the first through hole, and a portion of the first connector is located simultaneously in the snap-fit ​​groove and the first through hole.

4. The locking device according to claim 2, characterized in that, The first connector includes a semi-circular portion, a first straight portion, and a second straight portion. The first straight portion is connected to one end of the semi-circular portion, and the second straight portion is connected to the other end of the semi-circular portion. The semi-circular portion is inserted into a snap-fit ​​groove.

5. The locking device according to claim 4, characterized in that, The first limiting part is disposed near the opening of the first through hole, and along the insertion direction of the first connector, the two sides of the semi-circular part abut against the fixing post and the first limiting part respectively.

6. The locking device according to claim 4, characterized in that, Along the radial direction of the fixed post, the side of the first straight portion opposite to the second straight portion abuts against the inner wall of the first through hole; and / or, Along the radial direction of the fixed post, the side of the second straight portion opposite to the first straight portion abuts against the inner wall of the first through hole.

7. The locking device according to claim 4, characterized in that, Along the axial direction of the fixing post, both sides of the first straight portion abut against the inner wall of the first through hole; and / or, Along the axial direction of the fixed column, both sides of the second straight portion abut against the inner wall of the first through hole.

8. The locking device according to claim 1, characterized in that, The opening of the first through hole is provided with a guide surface, which is inclined and located along the axial direction of the fixed column. The guide surface and the first limiting part are respectively located on the upper and lower sides of the first through hole.

9. The locking device according to any one of claims 1-8, characterized in that, At least the mounting groove of the first latch is defined by a metallic material; and / or, At least the snap-fit ​​groove of the second latch is defined by a metallic material; and / or, The first connector is made of metal.

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