Fastener for connection

Abstract

The utility model discloses a fastener for connection, which comprises a fixed plate, a fastening plate and the like, and is mainly characterized in that a lock which is rotatably mounted is arranged on the fixed plate, a fastening groove is formed in the front part of the fastening plate, and after the fastening plate is connected through a connecting hook at the front end, the fastening plate can be rotatably assembled in the fastening groove through the lock, so as to lock the movement of the fastening plate relative to the fixed plate; when the lock rotates to be separated from the catching groove, the lock plate can be unlocked to move relative to the fixed plate; therefore, the lock is matched with the buckle plate to achieve locking or unlocking of connection, the connection hook in buckled connection can be prevented from being disengaged under the conditions of impact, vibration and the like, and effective connection of the fastener is guaranteed; meanwhile, the buckle plate moves forwards and backwards relative to the fixed plate through the additionally arranged connecting rod frame, namely, the connection position of the buckle plate is adjusted, so that even if a matching error occurs between two objects, the connection hook at the front end of the buckle plate can still be connected through the adjustment of the connection position, and the safety of the two objects is ensured. Therefore, the normal use of the fastener is also ensured.

Description

Technical Field

[0001] The utility model relates to a fastener, in particular to a fastener for connection. Background Art

[0002] At present, two articles are detachably connected through fasteners. For example, between a box body and a box cover, or between a main body and a door panel, etc. The structures of these fasteners mainly include a fixing plate and a clamping plate, etc. A connecting hook is provided at the front end of the clamping plate. The connecting hook usually has downward elasticity, and this elasticity can be provided by an elastic element arranged at the rear end of the clamping plate to elastically push upward to form a seesaw structure. Taking the snap connection between the box body and the box cover as an example, the fixing plate is usually fixedly installed on the box body, and a locking shaft is provided on the box cover to facilitate the formation of a hook connection by the connecting hook. When the box cover approaches the box body and is closed, the elastic connecting hook on the box body can directly hook the locking shaft on the box cover, thus forming the connection between the two; however, under the conditions of being impacted or vibrated, the connecting hook is very easy to bounce outwards and disengage from the locking shaft, resulting in the failure of the connection of the fastener; at the same time, when there is an error in the fit between two articles, since the clamping plate cannot move forward and backward relative to the fixing plate, that is, the position where the clamping plate needs to be connected cannot be adjusted, it will cause the connecting hook at the front end of the clamping plate to be difficult to touch the locking shaft on the box cover, thus unable to complete the normal use of the fastener. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a connecting fastener that can not only realize the locking or unlocking of the connection, but also adjust the connection position by the forward and backward movement of the clamping plate relative to the fixing plate.

[0004] The technical problem of the utility model is realized by the following technical solutions:

[0005] A connecting fastener includes a fixing plate and a clamping plate. A connecting hook is provided at the front end of the clamping plate. A lock is rotatably installed on the fixing plate; a link frame is hinged between the rear part of the clamping plate and the rear part of the fixing plate, and the clamping plate can move forward and backward relative to the fixing plate through the link frame; a buckle groove is provided at the front part of the clamping plate; after the clamping plate forms a connection through the connecting hook at the front end, the lock is rotationally fitted into the buckle groove to lock the movement of the clamping plate relative to the fixing plate; the lock rotates out of the buckle groove to unlock the movement of the clamping plate relative to the fixing plate.

[0006] The lock is composed of a cylindrical shaft and a disc at the top of the cylindrical shaft. The cylindrical shaft is rotatably installed in the installation hole of the fixing plate, and the disc is driven by the rotation of the lock to be fitted into the buckle groove to form locking or to disengage from the buckle groove to form unlocking.

[0007] The outer circumference of the disc is provided with a notch. The rotation of the lock drives the notch to face the buckle groove, and the disc is disengaged from the buckle groove to form unlocking.

[0008] The outer circumferential surface of the cylindrical shaft is provided with a laterally installed pin shaft, and the cylindrical shaft is fitted in the mounting hole of the fixed plate and is prevented from coming off through this pin shaft.

[0009] One side of the fixed plate is provided with a side hole. The pin shaft passes through the side hole and is laterally installed on the outer circumferential surface of the cylindrical shaft.

[0010] The inner circumferential surface of the mounting hole is provided with a limiting groove. The pin shaft is located in this limiting groove and is restricted by the limiting groove to form the rotational limit of the lock.

[0011] The disc is provided with a driving groove and a driving block arranged in the driving groove; the buckle plate is provided with a working hole exposing the driving groove and the driving block.

[0012] The bottom surface of the buckle plate is provided with an L-shaped barb extending downward. The hook mouth of the L-shaped barb faces the lock and forms a buckle groove.

[0013] The link frame is an H-shaped frame. One end of the link frame is hinged on the hinge seat at the rear of the fixed plate, and the other end of the link frame is hinged on the hinge shaft at the bottom surface of the rear part of the buckle plate.

[0014] The outer surface of the buckle plate is provided with multiple anti-slip lines.

[0015] Compared with the prior art, the utility model mainly has a rotatably mounted lock on the fixed plate and a buckle groove at the front of the buckle plate. After the buckle plate is connected through the connecting hook at the front end, it can be rotatably fitted in the buckle groove through the lock, thereby locking the movement of the buckle plate relative to the fixed plate; when the lock rotates out of the buckle groove, the movement of the buckle plate relative to the fixed plate can be unlocked; therefore, the lock is used in cooperation with the buckle plate to achieve the locking or unlocking of the connection, which can prevent the connecting hook of the snap connection from coming off under conditions such as impact and vibration, and avoid the connection failure of the fastener; at the same time, a mutually hinged link frame is also provided between the rear part of the buckle plate and the rear part of the fixed plate, and the buckle plate can move forward and backward relative to the fixed plate through this link frame, that is, the adjustment of the connection position of the buckle plate is realized. This enables the connecting hook at the front end of the buckle plate to still be able to achieve the connection even if there is a fitting error between the two articles, thereby ensuring the normal use of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional structure diagram of the utility model.

[0017] Figure 2 is Figure 1 the external view of.

[0018] Figure 3 is the top view of Figure 1 .

[0019] Figure 4 is the bottom view of Figure 1 .

[0020] Figure 5 is the perspective view of Figure 1 .

[0021] Figure 6 is the sectional view of the fixing plate.

[0022] Figure 7 is the bottom view of Figure 6 .

[0023] Figure 8 is the perspective view of Figure 6 from the first viewing direction.

[0024] Figure 9 is the perspective view of Figure 6 from the second viewing direction.

[0025] Figure 10 is the sectional view of the buckle plate.

[0026] Figure 11 is the perspective view of Figure 10 .

[0027] Figure 12 is the structural schematic diagram of the lock.

[0028] Figure 13 is the top view of Figure 12 .

[0029] Figure 14 is the left view of Figure 12 .

[0030] Figure 15 is the perspective view of Figure 12 from the first viewing direction.

[0031] Figure 16 is the perspective view of Figure 12 from the second viewing direction.

[0032] Figure 17 is the structural schematic diagram of the connecting rod frame.

[0033] Figure 18 is the structural schematic diagram of the fastener formed after the buckle plate is widened and shortened. Specific embodiments

[0034] The embodiments of the present invention will be further described in detail below with reference to the above-mentioned drawings.

[0035] As shown in Figures 1 to 18As shown, 1. Fixed plate, 11. Mounting hole, 12. Side hole, 13. Hinge seat, 14. Limiting groove, 15. Screw hole, 2. Clamping plate, 21. Connecting hook, 22. Anti-slip pattern, 23. Clamping groove, 24. Working hole, 25. Hinge shaft, 3. Lock, 31. Cylindrical shaft, 32. Disc, 33. Notch, 34. Driving groove, 35. Driving block, 36. Outer hole, 4. Linkage frame, 5. Pin shaft.

[0036] A fastener for connection, such as Figures 1 to 5 As shown, it is mainly used for detachable connection between two items, such as between a box body and a box cover, or between a main body and a door panel, etc. Its structure mainly includes a fixed plate 1 and a clamping plate 2. The fixed plate 1 is a rectangular plate and can be fixedly installed on one of the items by screws passing through the screw holes 15 on the fixed plate. The clamping plate 2 is a strip-shaped component. At the front end of the clamping plate, that is, Figure 1 as shown, at the left end, there is a connecting hook 21 with a continuous bend, and the connecting hook is hooked to a lock shaft (not shown in the figure) on another item, so as to realize the connection between the two items. The outer surface of the clamping plate 2 is provided with multiple anti-slip patterns 22 to enhance the frictional resistance during the operation of the clamping plate 2.

[0037] A lock 3 is rotatably installed on the fixed plate 1; there is a mutually hinged linkage frame 4 between the rear part of the clamping plate 2 and the rear part of the fixed plate 1, and the clamping plate 2 can move forward and backward relative to the fixed plate 1 through the linkage frame 4; a clamping groove 23 is provided on the bottom surface of the front part of the clamping plate 2.

[0038] Among them, the lock 3 is composed of a cylindrical shaft 31 and a disc 32 concentrically arranged at the top of the cylindrical shaft. The cylindrical shaft 31 is fitted into the mounting hole 11 on the fixed plate 1 to form a rotational installation; and, a pin shaft 5 is horizontally installed on the outer circumferential surface of the cylindrical shaft 31. When the cylindrical shaft 31 is fitted into the mounting hole 11 of the fixed plate 1, anti-disengagement can be achieved through the pin shaft 5; a side hole 12 is provided on one side of the fixed plate 1, and the pin shaft 5 passes through the side hole 12 and is horizontally installed in the outer hole 36 on the outer circumferential surface of the cylindrical shaft 31.

[0039] At the same time, a limiting groove 14 is also provided on the inner circumferential surface of the mounting hole 11, and the pin shaft 5 is exactly located in the limiting groove 14 and can be restricted by the limiting groove 14 to form rotational limitation of the lock 3.

[0040] The outer circumference of the disc 32 is provided with a notch 33. The top surface of the disc 32 is provided with a driving groove 34 and a driving block 35 arranged in the driving groove. The driving groove and the driving block are concentrically designed with the disc 32. The driving groove 34 is a circular groove, and the driving block 35 is a cross-shaped block. Correspondingly, a working hole 24 exposing the driving groove 34 and the driving block 35 is provided on the buckle plate 2. Therefore, a special sleeve with a cross-shaped hole is passed through the working hole 24 on the buckle plate 2 and fitted in the driving groove 34, and the cross-shaped hole is also fitted with the cross-shaped driving block 35. At this time, by rotating the special sleeve, the rotation of the lock 3 can be driven, thereby preventing the lock 3 from being opened or closed abnormally.

[0041] In addition, the locking or unlocking of the lock 3 means that when the buckle plate 2 is connected through the connecting hook 21 at the front end, the lock 3 rotates and drives the disc 32 to be fitted in the buckle groove 23, thereby locking the movement of the buckle plate 2 relative to the fixed plate 1. When the lock 3 rotates to drive the notch 33 to face the buckle groove 23, at this time, the disc 32 just disengages from the buckle groove 23, thereby unlocking the movement of the buckle plate 2 relative to the fixed plate 1.

[0042] Of course, the lock 3 is rotationally limited in the limiting groove 14 through the pin shaft 5. When the pin shaft 5 rotates to both ends of the limiting groove 14 respectively, it just corresponds to the disc 32 being fitted in the buckle groove 23 to form locking or the notch 33 facing the buckle groove 23 to make the disc 32 disengage from the buckle groove 23 to form unlocking, thereby preventing the lock 3 from rotating disorderly and being unable to correctly judge the working state.

[0043] The buckle groove 23 mentioned refers to an L-shaped barb extending downward on the bottom surface of the buckle plate 2. The hook opening of the L-shaped barb facing the lock 3 can form a buckle groove.

[0044] Therefore, using the lock 3 to cooperate with the buckle plate 2 to achieve locking or unlocking of the connection can effectively prevent the connection hook 21 of the snap connection from disengaging under conditions such as impact and vibration, and avoid the connection failure of the fastener.

[0045] The link frame 4 is an H-shaped frame. One end of the link frame is hinged to the hinge seat 13 at the rear of the fixed plate 1, and the other end of the link frame 4 is hinged to the hinge shaft 25 at the bottom surface of the rear part of the buckle plate 2. Therefore, the buckle plate 2 forms front and rear movements relative to the fixed plate 1 through the link frame 4, and the adjustment of the connection position of the buckle plate 2 is realized. This enables the connection hook 21 at the front end of the buckle plate 2 to still be able to achieve connection even if there is a fitting error between two articles through the adjustment of the connection position, thereby ensuring the normal use of the fastener.

[0046] The buckle plate 2 of the present utility model can also be widened and shortened as shown in Figure 18 to be applicable to more working occasions.

[0047] The above are only specific embodiments of the present utility model. Those skilled in the art should understand that any structural design equivalent to this embodiment should be included within the protection scope of the present utility model.

Claims

1. A fastener for connection, comprising a fixing plate (1) and a clamping plate (2). A connecting hook (21) is provided at the front end of the clamping plate. It is characterized in that, a lock (3) is rotatably installed on the fixing plate (1); a link frame (4) is hinged between the rear part of the clamping plate (2) and the rear part of the fixing plate (1), and the clamping plate (2) is movable forward and backward relative to the fixing plate (1) through the link frame (4); a buckle groove (23) is provided at the front part of the clamping plate (2); after the clamping plate (2) is connected through the connecting hook (21) at the front end, the lock (3) is rotatably fitted into the buckle groove (23), thereby locking the movement of the clamping plate (2) relative to the fixing plate (1); the lock (3) rotates away from the buckle groove (23), thereby unlocking the movement of the clamping plate (2) relative to the fixing plate (1).

2. The connecting fastener according to claim 1, characterized in that The lock (3) is composed of a cylindrical shaft (31) and a disc (32) at the top of the cylindrical shaft. The cylindrical shaft (31) is rotatably installed in the mounting hole (11) of the fixing plate (1), and the disc (32) is driven by the rotation of the lock (3) to be fitted into the buckle groove (23) to form locking or disengaged from the buckle groove (23) to form unlocking.

3. The connecting fastener according to claim 2, characterized in that A notch (33) is provided on the outer circumference of the disc (32). The rotation of the lock (3) drives the notch (33) to face the buckle groove (23), and the disc (32) is disengaged from the buckle groove (23) to form unlocking.

4. A connecting fastener according to claim 2, characterized in that A pin shaft (5) is horizontally installed on the outer circumferential surface of the cylindrical shaft (31), and the cylindrical shaft (31) is fitted into the mounting hole (11) of the fixing plate (1) and is prevented from coming off through the pin shaft (5).

5. The connecting fastener according to claim 4, characterized in that A side hole (12) is provided on one side of the fixing plate (1). The pin shaft (5) passes through the side hole (12) and is horizontally installed on the outer circumferential surface of the cylindrical shaft (31).

6. A fastening piece for connection according to claim 5, characterized in that A limiting groove (14) is provided on the inner circumferential surface of the mounting hole (11). The pin shaft (5) is located in the limiting groove (14) and is limited by the limiting groove to form rotational limitation of the lock (3).

7. A fastening member for connection according to claim 2, characterized in that A driving groove (34) and a driving block (35) arranged in the driving groove are provided on the disc (32); a working hole (24) exposing the driving groove (34) and the driving block (35) is provided on the clamping plate (2).

8. A fastening piece for connection according to claim 1, characterized in that An L-shaped barb extending downward is provided on the bottom surface of the clamping plate (2). The hook mouth of the L-shaped barb faces the lock (3) and forms the buckle groove (23).

9. A fastening element for connection according to claim 1, characterized in that The link frame (4) is an H-shaped frame. One end of the link frame (4) is hinged to the hinge seat (13) at the rear part of the fixing plate (1), and the other end of the link frame (4) is hinged to the hinge shaft (25) at the bottom surface of the rear part of the clamping plate (2).

10. A fastening part for connection according to claim 1, characterized in that Multiple anti-slip lines (22) are provided on the outer surface of the clamping plate (2).

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