Unlocking piece structure

Abstract

The present application relates to the technical field of automobile accessories, and in particular to an unlocking piece structure, comprising an unlocking paddle body, a mounting sheet metal body and a reset torsion spring; the unlocking paddle body comprises a toggle piece, a first connecting piece, a first limiting piece and a mounting post; the mounting sheet metal body comprises a mounting piece, a first fixing piece, a lock hook piece, a second connecting piece, a second limiting piece and a second fixing piece; the reset torsion spring comprises a spring portion, a first leg and a second leg, the first leg and the second leg respectively extending from both ends of the spring portion, the spring portion being sleeved on the mounting post, the end of the first leg away from the spring portion being fixed to the toggle piece by a barrier, and the end of the second leg away from the spring portion being hooked into the hook. As the toggle piece and the lock hook piece are on mutually perpendicular planes, the first leg and the second leg can be bent and folded according to installation requirements, and cooperate with the hook and the toggle piece to form a firm and three-dimensional installation relationship, so that the reset torsion spring is not easy to fall off, and the entire unlocking piece structure is also more firm and stable.

Description

Technical Field

[0001] The present application relates to the technical field of automobile accessories, and in particular to an unlocking piece structure. Background Art

[0002] With the booming automotive industry, vehicle configurations are becoming increasingly diverse. In addition to traditional four-door, five-seater vehicles, two-door, five-seater, and four-door, seven-seater vehicles are increasingly appearing in people's daily lives. Car seats are essential components. SUVs and MPVs typically have three rows of seats. To facilitate access to the third row or to place items in the seats, the front seats often need to be folded down or tilted forward to create sufficient space. Therefore, easy-entry unlocking mechanisms are often installed on the middle row seats to facilitate this.

[0003] For example, a Chinese patent application numbered 201910018010.0 discloses a universal lock for a car seat, comprising a mounting base having a first rotation axis and a second rotation axis parallel to each other, a lock hook rotatable along the first rotation axis and an unlocking piece, a first limiting lock piece, and a second limiting lock piece independently rotatable along the second rotation axis are mounted on the mounting base, the unlocking piece is elastically connected to the lock hook, and the lock hook has a locking hook interface with an open structure, wherein the mounting base comprises a first cover plate and a second cover plate arranged opposite to each other, and the first cover plate and the second cover plate are connected with mutually parallel locking pieces. The first rotating support component and the second rotating support component, the central axis of the first rotating support component is the first rotating axis, and the central axis of the second rotating support component is the second rotating axis, the lock hook is rotatably mounted on the first rotating support component, and the unlocking piece, the first limiting lock piece and the second limiting lock piece are all rotatably mounted on the second rotating support component; the first limiting lock piece is located between the first cover plate and the unlocking piece, and is connected to the first elastic rotating component between the first cover plate, and the second limiting lock piece is located between the second cover plate and the unlocking piece, and is connected to the second elastic rotating component between the second cover plate.

[0004] Another example is an application number 201410838503.6 discloses a mechanism for folding down a seat back and simultaneously unlocking a seat slide, which is mounted on a lower connecting plate of the backrest on one side of the seat, and the mechanism for folding down the seat back and simultaneously unlocking the seat slide comprises: two first lower trigger sheet metal parts and a second lower trigger sheet metal parts of identical structure, the two first and second lower trigger sheet metal parts of identical structure being spaced apart and connected by a first connecting shaft, a second connecting shaft, and a third connecting shaft; wherein the second connecting shaft is exposed from the outer surface of the first lower trigger sheet metal part for a distance, and the second connecting shaft is exposed from the outer surface of the first lower trigger sheet metal part for a distance and passes through a first through hole of a roughly triangular shape arranged on the lower connecting plate of the backrest and a zigzag through hole arranged on the recliner operating handle; the third connecting shaft The outer surface of the second lower trigger sheet metal is exposed for a distance to wind up the reset spring of the lower trigger sheet metal; a transmission sheet metal part is arranged between the inner surface of the first lower trigger sheet metal part and the inner surface of the second lower trigger sheet metal part, and a first rotating shaft hole for the third connecting shaft to pass through, a waist-shaped hole for the second connecting shaft to pass through, a second rotating shaft hole for assembling the rotating shaft and a sliding rail unlocking cable hanging hole are arranged on the transmission sheet metal part. The waist-shaped hole and the second rotating shaft hole are located between the first rotating shaft hole and the sliding rail unlocking cable hanging hole, and a spring hook is provided on the outer edge of the transmission sheet metal part near the first rotating shaft hole, the third connecting shaft passes through the first rotating shaft hole, and the second connecting shaft passes through the waist-shaped hole; the transmission sheet metal has a spring hook connected to the first trigger The first outer surface contacts the inner surface of the trigger sheet metal and the second outer surface contacts the inner surface of the second trigger sheet metal, a lower trigger sheet metal return spring is wound on the third connecting shaft and exposed to a distance from the outer surface of the second lower trigger sheet metal, one end of the lower trigger sheet metal return spring is hooked on the hanging spring hook on the outer edge of the transmission sheet metal, and the other end is hooked on the position of the second lower trigger sheet metal close to the first connecting shaft; a rotating shaft is arranged in the second rotating shaft hole of the transmission sheet metal, and the rotating shaft has a first end exposed to the first outer surface of the transmission sheet metal and a second end exposed to the second outer surface of the transmission sheet metal; an isolation sleeve is arranged on the first end of the rotating shaft and the first end of the rotating shaft is anchored to the lower connecting plate of the backrest A mechanism return spring is wound around the second end of the rotating shaft, one end of the mechanism return spring is hooked on the rotating shaft, and the other end is hooked on the outer edge of the transmission sheet metal near the slide rail unlocking cable hanging hole; an upper trigger sheet metal is fixed to the backrest upper connecting plate, and the upper trigger sheet metal will follow the backrest upper connecting plate to rotate and hook the first connecting shaft when the seat back is folded down and the seat slide rails are unlocked at the same time, but cannot hook the first connecting shaft when the seat back is fully folded down; the backrest upper connecting plate is axially mounted on the backrest lower connecting plate, and the recliner operating handle is also axially mounted on the backrest lower connecting plate, and the recliner unlocking cable is connected to the recliner operating handle at a position below the zigzag hole.

[0005] It can be seen that the unlocking pieces of almost all car seat locks currently on the market are sheet-like structures. In order to ensure that the unlocking piece can switch freely between the locked and unlocked states, the unlocking piece must be able to rotate freely and reset freely. In order to achieve the free reset of the unlocking piece, a reset torsion spring must be added between the unlocking piece and another sheet metal part installed on the seat body / sliding track, that is, the two end legs of the reset torsion spring are respectively connected to the unlocking piece and a sheet metal part.

[0006] Regarding the above-mentioned related technologies, the inventor believes that there are the following defects:

[0007] The legs of the reset torsion spring generally need to be inserted into the sockets of the unlocking plate and the adjacent sheet metal part. The traditional unlocking plate and the adjacent sheet metal part are almost sheet-like structures, and the two are designed to be parallel and close to each other. That is, the legs of the reset torsion spring are designed to be very short, which makes the reset torsion spring easy to fall off, and the sheet metal part also has the problem of loose installation, so it needs to be improved. Summary of the Invention

[0008] This application provides an unlocking piece structure to improve the following technical problems:

[0009] The common unlocking piece structure causes the reset torsion spring to fall off easily, and the sheet metal parts are also not installed firmly.

[0010] This application provides an unlocking piece structure, which adopts the following technical solutions:

[0011] An unlocking piece structure, comprising an unlocking paddle body, a mounting sheet metal body and a reset torsion spring;

[0012] The unlocking paddle body includes a paddle, a first connecting piece, a first limiting piece, and a mounting post, wherein the connecting piece is arranged between the paddle and the first limiting piece, the mounting post is vertically connected to the outer side surface of the paddle, the paddle and the first limiting piece are perpendicular to each other, and the mounting post and the first limiting piece are respectively located on two opposite sides of the paddle;

[0013] and a lock member having two opposite sides, the lock member being a vertical cam and a horizontal cam, and a vertical cam which is adapted to engage said locking member and the locking member being a horizontal cam.

[0014] The reset torsion spring includes a spring portion, a first leg and a second leg, the first leg and the second leg respectively extending from both ends of the spring portion, the spring portion being sleeved on the mounting column, the end of the first leg away from the spring portion being blocked and fixed on the toggle plate, and the end of the second leg away from the spring portion being hooked into the hook.

[0015] In a feasible technical solution of the present application, a first stamping pit is provided at the connection between the first fixing plate and the locking hook plate.

[0016] In a feasible technical solution of the present application, a reinforcement plate is vertically connected between the installation plate and the first fixing plate, and the installation plate and the reinforcement plate are located on the same side of the first fixing plate.

[0017] In a feasible technical solution of the present application, a first stamping groove with a non-linear structure is provided on the first fixing plate, the fixing hole on the first fixing plate is arranged on the side of the first stamping groove away from the second connecting plate, and the fixing hole on the first fixing plate and the reinforcement plate are respectively located at two opposite corners of the first fixing plate.

[0018] In a feasible technical solution of the present application, the first connecting piece is arranged to be inclined toward the inner side of the toggle piece, the angle between the first connecting piece and the toggle piece is between 120-150 degrees, and the angle between the first connecting piece and the first limiting piece is between 120-150 degrees.

[0019] In a feasible technical solution of the present application, a second stamping pit is provided at the connection between the first connecting plate and the toggle plate, a third stamping pit is provided at the connection between the first connecting plate and the first limiting plate, and the first limiting plate is provided with a plurality of second stamping grooves arranged in parallel at intervals, one of which is connected to the third stamping pit.

[0020] In a feasible technical solution of the present application, the second fixing plate includes an inclined plate and a bent flange, the bent flange is arranged on the side of the inclined plate away from the second limiting plate, the inclined plate and the second connecting plate are symmetrically arranged on the same side of the second limiting plate, the bent flange and the first fixing plate are on the same plane, and the fixing hole of the second fixing plate is arranged on the bent flange.

[0021] In a feasible technical solution of the present application, the angle between the inclined piece and the second limiting piece, and the angle between the second connecting piece and the second limiting piece are both between 120-150 degrees.

[0022] In a feasible technical solution of the present application, a fourth stamping pit is provided at the connection between the inclined piece and the second limiting piece, and a fifth stamping pit is provided at the connection between the second connecting piece and the second limiting piece.

[0023] In a feasible technical solution of the present application, the toggle plate is provided with an inclined surface for blocking the end of the first leg away from the spring portion, and the inclined surface is arranged away from the first connecting plate.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] The unlocking paddle body and the mounting sheet metal body are not common flat plate structures, but three-dimensional structures formed by stamping. Therefore, the unlocking paddle body and the mounting sheet metal body are not installed in a common parallel relationship. Instead, a three-dimensional combined support structure is formed by the unlocking paddle body and the mounting sheet metal body. Not only is the connection structure more stable and firm, but the semi-enclosed recessed structure formed by the second connecting piece, the second limiting piece, and the second fixing piece will not affect the normal rotation of the unlocking paddle body, ensuring the normal unlocking and locking purposes.

[0026] Because the toggle plate and the lock hook plate are on mutually perpendicular planes, and a hook is provided on the lock hook plate, the first leg and the second leg of the reset torsion spring can be designed to be longer, and the first leg and the second leg can be bent and folded to an appropriate degree according to installation requirements, and then cooperate with the hook and the toggle plate to form a firm and relatively three-dimensional installation relationship, so the reset torsion spring is not easy to fall off, and the entire unlocking plate structure is also more firm and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 It is a structural diagram of the unlocking piece structure of an embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the structure of installing the sheet metal body in the embodiment of the present application.

[0030] Description of reference numerals:

[0031] 100, unlocking paddle body; 11, paddle; 111, inclined surface; 12, first connecting piece; 13, first limiting piece; 131, second stamping groove; 14, mounting column; 101, second stamping pit; 102, third stamping pit;

[0032] 200, mounting sheet metal body; 21, mounting plate; 22, first fixing plate; 221, first stamping groove; 23, locking hook plate; 231, hook; 24, second connecting plate; 25, second limiting plate; 26, second fixing plate; 261, tilting plate; 262, bending flange; 27, reinforcement plate; 201, first stamping pit; 202, fourth stamping pit; 203, fifth stamping pit;

[0033] 300. Return torsion spring; 31. Spring portion; 32. First leg; 33. Second leg. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0035] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0038] The following is combined with Figure 1-2 This application is described in further detail.

[0039] The embodiment of the present application discloses an unlocking piece structure. Figure 1 and Figure 2 The unlocking piece structure includes an unlocking paddle body 100, a mounting sheet metal body 200 and a reset torsion spring 300. The unlocking paddle body 100 and the mounting sheet metal body 200 are both formed by stamping sheet metal.

[0040] The unlocking paddle body 100 includes a paddle 11, a first connecting piece 12, a first limiting piece 13, and a mounting post 14. The connecting piece is disposed between the paddle 11 and the first limiting piece 13. The mounting post 14 is perpendicularly connected to the outer side of the paddle 11. The paddle 11 and the first limiting piece 13 are perpendicular to each other. The mounting post 14 and the first limiting piece 13 are located on opposite sides of the paddle 11.

[0041] The installation sheet metal body 200 includes a mounting piece 21, a first fixing piece 22, a locking hook piece 23, a second connecting piece 24, a second limiting piece 25 and a second fixing piece 26. The mounting piece 21, the locking hook piece 23 and the second connecting piece 24 are respectively located on three different sides of the first fixing piece 22, the locking hook piece 23 and the second connecting piece 24 are respectively on two opposite sides of the first fixing piece 22, the mounting piece 21 and the locking hook piece 23 are vertically connected to the first fixing piece 22 and extend toward different sides of the first fixing piece 22, the second limiting piece 25 The second fixing piece 26 is provided on the side of the second connecting piece 24 away from the first fixing piece 22, and the second fixing piece 26 is provided on the side of the second limiting piece 25 away from the second connecting piece 24. The first fixing piece 22 and the second limiting piece 25 are both parallel to the first limiting piece 13. The mounting piece 21 is attached to the inner side of the toggle piece 11 and is rotatably assembled on the toggle piece 11. The lock hook piece 23 is provided with a hook 231. The first limiting piece 13 is blocked and limited in the semi-enclosed recessed structure formed by the second connecting piece 24, the second limiting piece 25, and the second fixing piece 26.

[0042] The return torsion spring 300 includes a spring portion 31, a first leg 32 and a second leg 33. The first leg 32 and the second leg 33 extend from both ends of the spring portion 31 respectively. The spring portion 31 is sleeved on the mounting column 14. The end of the first leg 32 away from the spring portion 31 is blocked and fixed on the toggle plate 11, and the end of the second leg 33 away from the spring portion 31 is hooked into the hook 231.

[0043] The beneficial technical effects of the unlocking piece structure of the embodiment of the present application are roughly as follows:

[0044] The unlocking paddle body 100 and the mounting sheet metal body 200 are not common flat plate structures, but three-dimensional structures formed by stamping. Therefore, the unlocking paddle body 100 and the mounting sheet metal body 200 are not in a common parallel installation relationship. Instead, a three-dimensional combined support structure is formed by the unlocking paddle body 100 and the mounting sheet metal body 200. Not only is the connection structure more stable and firm, but the semi-enclosed recessed structure formed by the second connecting piece 24, the second limiting piece 25, and the second fixing piece 26 will not affect the normal rotation of the unlocking paddle body 100, ensuring the normal unlocking and locking purposes.

[0045] Because the toggle piece 11 and the lock hook piece 23 are on mutually perpendicular planes, and a hook 231 is also provided on the lock hook piece 23, the first leg 32 and the second leg 33 of the reset torsion spring 300 can be designed to be longer, and then the first leg 32 and the second leg 33 can be bent and folded to an appropriate degree according to installation requirements, and then cooperate with the hook 231 and the toggle piece 11 to form a firm and relatively three-dimensional installation relationship, so that the reset torsion spring 300 is not easy to fall off, and the entire unlocking piece structure is also more firm and stable.

[0046] In this embodiment, in order to enhance the connection firmness between the first fixing piece 22 and the locking hook piece 23 , a first punching pit 201 is provided at the connection between the first fixing piece 22 and the locking hook piece 23 .

[0047] In this embodiment, in order to enhance the connection firmness between the mounting plate 21 and the first fixing plate 22 , a reinforcing plate 27 is vertically connected between the mounting plate 21 and the first fixing plate 22 , and the mounting plate 21 and the reinforcing plate 27 are located on the same side of the first fixing plate 22 .

[0048] In this embodiment, in order to enhance the structural strength of the first fixing plate 22 itself, a first stamping groove 221 with a non-linear structure is provided on the first fixing plate 22. The fixing hole on the first fixing plate 22 is provided on the side of the first stamping groove 221 away from the second connecting plate 24. The fixing hole and the reinforcement plate 27 on the first fixing plate 22 are respectively located at two opposite corners of the first fixing plate 22.

[0049] In this embodiment, in order to improve the installation firmness of the second fixing plate 26 and reduce the difficulty of manufacturing the second fixing plate 26, the second fixing plate 26 includes an inclined plate 261 and a bent flange 262. The bent flange 262 is arranged on the side of the inclined plate 261 away from the second limiting plate 25. The inclined plate 261 and the second connecting plate 24 are symmetrically arranged on the same side of the second limiting plate 25. The bent flange 262 and the first fixing plate 22 are on the same plane. The fixing hole of the second fixing plate 26 is arranged on the bent flange 262.

[0050] Specifically, the angle between the inclined piece 261 and the second limiting piece 25 and the angle between the second connecting piece 24 and the second limiting piece 25 are both between 120-150 degrees.

[0051] In this embodiment, in order to improve the connection firmness and structural strength of the second limiting plate 25, a fourth stamping pit 202 is provided at the connection between the inclined plate 261 and the second limiting plate 25, and a fifth stamping pit 203 is provided at the connection between the second connecting plate 24 and the second limiting plate 25.

[0052] The mounting sheet metal body 200 designed as above has a higher structural strength, is not easily deformed or damaged by pressure, is easy to stamp and is very simple to assemble.

[0053] In this embodiment, in order to enhance the structural strength of the unlocking paddle body 100 itself, the first connecting piece 12 is arranged inclined toward the inner side of the paddle piece 11, and the angle between the first connecting piece 12 and the paddle piece 11 is between 120-150 degrees, and the angle between the first connecting piece 12 and the first limiting piece 13 is between 120-150 degrees.

[0054] In this embodiment, in order to enhance the connection firmness between the first connecting piece 12 and the toggle piece 11, a second stamping pit 101 is provided at the connection between the first connecting piece 12 and the toggle piece 11, and a third stamping pit 102 is provided at the connection between the first connecting piece 12 and the first limiting piece 13. The first limiting piece 13 is provided with a plurality of second stamping grooves 131 arranged in parallel at intervals, one of which is connected to the third stamping pit 102. The second stamping groove 131 can significantly enhance the structural strength of the first limiting piece 13 itself.

[0055] Furthermore, an inclined surface 111 is provided on the toggle piece 11 to block the end of the first leg 32 from being away from the spring portion 31 . The inclined surface 111 is arranged away from the first connecting piece 12 .

[0056] The unlocking paddle body 100 designed as above has a higher structural strength and is not easily deformed or damaged by pressure. In addition, it is easy to stamp and assemble.

[0057] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the scope of protection of the present application.

Claims

1. An unlocking piece structure, characterized in that: It comprises an unlocking paddle body (100), an installation sheet metal body (200) and a reset torsion spring (300); The unlocking paddle body (100) comprises a paddle (11), a first connecting piece (12), a first limiting piece (13) and a mounting post (14), wherein the connecting piece is arranged between the paddle (11) and the first limiting piece (13), the mounting post (14) is vertically connected to the outer side surface of the paddle (11), the paddle (11) and the first limiting piece (13) are perpendicular to each other, and the mounting post (14) and the first limiting piece (13) are respectively located on two opposite side surfaces of the paddle (11); The mounting sheet metal body (200) comprises a mounting piece (21), a first fixing piece (22), a locking hook piece (23), a second connecting piece (24), a second limiting piece (25) and a second fixing piece (26), wherein the mounting piece (21), the locking hook piece (23) and the second connecting piece (24) are respectively located on three different sides of the first fixing piece (22), the locking hook piece (23) and the second connecting piece (24) are respectively located on two opposite sides of the first fixing piece (22), the mounting piece (21) and the locking hook piece (23) are both vertically connected to the first fixing piece (22) and extend toward different sides of the first fixing piece (22), and the second limiting piece (25) is arranged The second connecting piece (24) is located on a side away from the first fixing piece (22), the second fixing piece (26) is located on a side away from the second limiting piece (25) of the second connecting piece (24), the first fixing piece (22) and the second limiting piece (25) are both parallel to the first limiting piece (13), the mounting piece (21) is attached to the inner side of the toggle piece (11) and is rotatably assembled on the toggle piece (11), a hook (231) is provided on the lock hook piece (23), and the first limiting piece (13) is blocked and limited in a semi-enclosed recessed structure formed by the second connecting piece (24), the second limiting piece (25) and the second fixing piece (26); The reset torsion spring (300) comprises a spring portion (31), a first leg (32) and a second leg (33), wherein the first leg (32) and the second leg (33) extend from both ends of the spring portion (31) respectively, and the spring portion (31) is sleeved on the mounting column (14), and the end of the first leg (32) away from the spring portion (31) is fixed to the toggle plate (11), and the end of the second leg (33) away from the spring portion (31) is hooked into the hook (231).

2. The unlocking piece structure according to claim 1, characterized in that: A first punching recess (201) is provided at the connection between the first fixing plate (22) and the locking hook plate (23).

3. The unlocking piece structure according to claim 1, characterized in that: A reinforcing sheet (27) is vertically connected between the mounting sheet (21) and the first fixing sheet (22), and the mounting sheet (21) and the reinforcing sheet (27) are located on the same side of the first fixing sheet (22).

4. The unlocking piece structure according to claim 3, characterized in that: The first fixing plate (22) is provided with a first stamping groove (221) of a non-linear structure, the fixing hole on the first fixing plate (22) is arranged on a side of the first stamping groove (221) away from the second connecting plate (24), and the fixing hole on the first fixing plate (22) and the reinforcing plate (27) are respectively located at two opposite corners of the first fixing plate (22).

5. The unlocking piece structure according to claim 1, characterized in that: The first connecting piece (12) is arranged to be inclined toward the inner side of the toggle piece (11); the angle between the first connecting piece (12) and the toggle piece (11) is between 120 and 150 degrees; and the angle between the first connecting piece (12) and the first limiting piece (13) is between 120 and 150 degrees.

6. The unlocking piece structure according to claim 5, characterized in that: A second punched recess (101) is provided at the connection between the first connecting piece (12) and the shifting piece (11), a third punched recess (102) is provided at the connection between the first connecting piece (12) and the first limiting piece (13), and a plurality of second punched grooves (131) arranged in parallel at intervals are provided on the first limiting piece (13), one of the second punched grooves (131) being connected to the third punched recess (102).

7. The unlocking piece structure according to claim 1, characterized in that: The second fixing plate (26) comprises an inclined plate (261) and a bent flange (262), wherein the bent flange (262) is arranged on a side of the inclined plate (261) away from the second limiting plate (25), the inclined plate (261) and the second connecting plate (24) are symmetrically arranged on the same side of the second limiting plate (25), the bent flange (262) and the first fixing plate (22) are on the same plane, and the fixing hole of the second fixing plate (26) is arranged on the bent flange (262).

8. The unlocking piece structure according to claim 7, characterized in that: The angle between the inclined piece (261) and the second limiting piece (25), and the angle between the second connecting piece (24) and the second limiting piece (25) are both between 120 and 150 degrees.

9. The unlocking piece structure according to claim 8, characterized in that: A fourth punched recess (202) is provided at the connection between the inclined piece (261) and the second limiting piece (25), and a fifth punched recess (203) is provided at the connection between the second connecting piece (24) and the second limiting piece (25).

10. The unlocking piece structure according to any one of claims 1 to 9, characterized in that: The toggle piece (11) is provided with an inclined surface (111) for blocking the end of the first leg (32) from being away from the spring portion (31), and the inclined surface (111) is arranged away from the first connecting piece (12).

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