A self-locking slider and a zipper assembly to which the same is applied

Abstract

A self-locking slider and a zipper assembly to which the same is applied, comprising a main body and an arcuate locking hook. A tooth channel and a locking hole communicating with the tooth channel are provided on the main body. It is characterized in that it further comprises a toggle button. The toggle button comprises a rotating bracket, the rotating bracket comprises a rotating shaft and an arm extending upward from the rotating shaft. A connecting arm is lapped on the rotating shaft, and when the rotating shaft rotates, the connecting arm can swing and the hook arm end can move. The toggle button further comprises a button cover plate, and the button cover plate is horizontally inserted on the arm. The connecting arm is located below the button cover plate. It further comprises a cover detachably connected to the main body. The cover comprises a cover side wall. The cover side wall is located at the side of the button cover plate but does not prevent the toggle button from rotating, and is used to prevent the button cover plate from coming out. The rotating bracket is rotatably connected to the main body or the cover side wall through the rotating shaft. Splitting the toggle button into a rotating rotating bracket and a button cover plate inserted on the rotating bracket reduces mistakes during combined installation and is beneficial to improving the installation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of zippers, and particularly relates to a self-locking slider and a zipper assembly to which the same is applied. Background Art

[0002] Zippers, as the main accessories for clothing and suitcases, have been widely used. Common zippers can be classified into non-self-locking zippers and self-locking zippers according to whether they can be locked. The slider of a non-self-locking zipper may slide along the zipper tape under non-artificial operation when the zipper tape is engaged, while a self-locking zipper can prevent the slider from self-sliding under non-artificial operation conditions through a self-locking mechanism. Currently, the most common structure of a self-locking zipper on the market generally includes a main body, a spring piece, a hook, and a pull tab. In the locked state, the free end of the hook is inserted into the gap between the teeth of the zipper tape under the elastic force of the spring piece to achieve locking of the slider; when it is necessary to pull the slider, the pull tab connected to the slider is lifted. When the pull tab is lifted, it can pull out the free end of the hook from the gap between the teeth to release the locking of the slider; after the slider moves to the designated position, the pull tab is released, and the hook is reset under the action of the spring piece. However, this self-locking zipper structure is very unstable. Especially when lifting the pull tab, it is impossible to ensure the pulling force and direction, which will cause misalignment or false positioning of the hook, greatly affecting the use of the zipper.

[0003] Therefore, people have made improvements on the basis of the existing self-locking zipper structure. For example, the Chinese invention patent with the publication number CN109008091A discloses a slider of a zipper, which includes a body having an installation groove, and a locking pin positioning hole at the bottom of the installation groove; a sailboard rotatably installed in the installation groove, with a locking pin at one end of the sailboard that can pass through the locking pin positioning hole to engage the teeth of the zipper tape to lock the teeth; a button, the body has a protrusion higher than the surface of the body at the installation groove, and the button is rotatably installed on the side wall of the protrusion; it further includes a balance bracket slidably connected to the button, and the other end of the balance bracket abuts against the sailboard, so that the button abuts against the sailboard and drives the sailboard to rotate. This self-locking structure realizes the self-locking and unlocking of the slider by pressing the button, replacing the lifting and unlocking structure of the pull tab, and ensuring the stability of the slider when it is pulled. However, this slider structure has the following problems. First, the balance bracket is slidably connected to the button, and it is very easy to fall off during the process of installing the button on the side wall, with low installation efficiency; second, when replacing the button, it needs to be disassembled together with the rotating shaft, and it is very easy to damage the side wall of the protrusion when installing and disassembling the button; third, when the button is installed on the side wall, the rotating shaft and the installation hole are exposed, with low aesthetic property. Summary of the Invention

[0004] In view of the above technical problems, the present invention provides a self-locking slider, which includes a main body and an arcuate locking hook. A tooth channel and a locking hole communicating with the tooth channel are provided on the main body. The locking hook includes a fixed end, a movable hook arm end, and a connecting arm connecting the fixed end and the hook arm end. The fixed end is connected to the main body. When the connecting arm is driven by a top pressure, it can drive the hook arm end to move, that is, to insert the hook arm end through the locking hole into the tooth channel or to retract the hook arm end from the tooth channel back into the locking hole. It further includes a toggle button, which includes a rotating bracket. The rotating bracket includes a rotating shaft and an arm extending upward from the rotating shaft. The connecting arm overlaps the rotating shaft, and when the rotating shaft rotates, it can make the connecting arm swing and also make the hook arm end move. The toggle button further includes a button cover plate, which is horizontally inserted on the arm. The connecting arm is located below the button cover plate. It further includes a cover detachably connected to the main body. The cover includes a cover side wall. The cover side wall is located on the side of the button cover plate but does not prevent the toggle button from rotating, and is used to prevent the button cover plate from being withdrawn. The rotating bracket is rotatably connected to the main body or the cover side wall through the rotating shaft.

[0005] Among them, the main body refers to the main structural component of the self-locking slider for movably connecting with a chain tape. It includes an upper plate, a lower plate, and a connecting column provided between the upper plate and the lower plate. The upper plate, the lower plate, and the connecting column define a tooth channel extending horizontally from left to right. A pair of chain tapes are movably arranged in the tooth channel. The main body moves back and forth to combine or separate the pair of chain tapes.

[0006] Among them, the locking hook is a component that can be used to limit the movement of the self-locking slider. Specifically, the locking hook realizes locking by connecting the main body of the self-locking slider and the chain tape, or realizes unlocking by disconnecting the connection between the main body and the chain tape. In this embodiment, the locking hook is arcuate, the connecting arm is arranged horizontally from left to right, the fixed end and the hook arm end extend downward from both ends of the connecting arm. A column hole is provided on the connecting column of the main body. The fixed end of the locking hook extends into the column hole and is clamped on the connecting column, and the hook arm end movably penetrates through the locking hole and realizes connection with the chain tape. In order to realize the connection and separation between the hook arm end and the chain tape, the locking hook can swing relative to the main body. This can be that the whole locking hook swings around the fixed end, or it can be that a part of the locking hook deforms itself to make the hook arm end and the connecting arm swing.

[0007] Among them, the keyhole is a through hole provided on the upper plate or the lower plate of the main body. The keyhole communicates the tooth link channel with the external space. The size of the keyhole is adapted to the hook arm end of the lock hook. The hook arm end of the lock hook can freely penetrate through the keyhole and extend into the tooth link channel or retreat from the tooth link channel back into the keyhole.

[0008] Among them, the toggle button is a component used to drive the swing of the lock hook. It is composed of a bracket and a button cover plate inserted into each other. When the toggle button swings, the combined rotating bracket and the button cover plate swing synchronously. During the installation process, the rotating bracket can be installed on the main body first, then the lock hook can be installed and the connecting arm can be hooked onto the rotating bracket, and then the button cover plate can be inserted to cover the rotating bracket and the lock hook above, so that the lock hook can be installed separately, and the button cover plate can be flexibly installed and disassembled.

[0009] Among them, the rotating bracket is the base component of the toggle button. The lower part of the rotating bracket can be connected to the main body and the lock hook through the rotating shaft, and the upper part can be connected to the button cover plate through the support arm. A convex block is provided on the rotating shaft of the rotating bracket. When the rotating bracket rotates, the convex block can make the connecting arm swing so as to drive the hook arm end to swing.

[0010] Among them, when the rotating shaft rotates, it can make the connecting arm swing and also make the hook arm end move. Since the rotation of the rotating shaft includes forward rotation and reverse rotation, there are at least the following two applications. First, the lock hook itself is subjected to a certain force and is pressed against the rotating shaft. When the rotating shaft rotates forward, it actively drives the connecting arm to swing to achieve locking or unlocking, and when the rotating shaft rotates reversely, the lock hook is reset under its own or other external forces. Second, the lock hook is lapped on the rotating shaft, and the rotating shaft drives the connecting arm to swing during both forward and reverse rotations.

[0011] Among them, the surrounding cover is a shielding component that covers the main body. The side wall of the surrounding cover can limit the sliding out of the button cover plate. On the contrary, the button cover plate can be conveniently replaced by disassembling the surrounding cover.

[0012] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are as follows: First, the toggle button is split into the rotating support bracket and the button cover plate inserted on the rotating support bracket. During installation, it is installed step by step from top to bottom. First, place the rotating support bracket, then install the locking hook, and then insert the button cover plate, so that the swing arm end of the locking hook not only overlaps on the rotating shaft but also penetrates between the rotating shaft and the button cover plate, reducing mistakes during combined installation and facilitating the improvement of installation efficiency. Second, the button cover plate installed by insertion can not only cover the rotating support bracket and the locking hook below, but also is convenient for disassembly and replacement. Different colors and materials can be adapted to different application scenarios, increasing the adaptability of the self-locking pull head. Third, by setting the surrounding cover, it not only well covers the rotating support bracket, the locking hook and part of the button cover plate, but also limits the sliding and loosening of the button cover plate, greatly improving the overall aesthetics of the self-locking pull head. Fourth, the locking hook is hidden and installed under the button cover plate and the surrounding cover, reducing the problem that sundries or fabrics are inserted under the connecting arm of the locking hook to affect the swing of the connecting arm, and greatly improving the moving stability of the self-locking pull head. Fifth, the locking hook is driven by the toggle button to accurately switch between the locked and unlocked states, effectively reducing the problems of false locking or inaccurate locking position of the locking hook, and further improving the use stability of the self-locking pull head.

[0013] In order to enable the button cover plate to be inserted onto the rotating support bracket, a further technical solution may also be that it further includes a slide rail and a slide groove, which are respectively arranged on the support arm and the button cover plate. The button cover plate is inserted onto the rotating support bracket through the slide rail and the slide groove and can rotate together with the rotating support bracket.

[0014] In order to enable the side wall of the surrounding cover to block the button cover plate from sliding out, a further technical solution may also be that the button cover plate inserted on the support arm can slide out along the extension direction of the slide rail and the slide groove, and at least part of the side wall of the surrounding cover extends upward to the path where the button cover plate slides out. Of course, according to different installation structures, the arrangement of the side wall of the surrounding cover can be arranged in a matching manner. When the button cover plate only slides out in the reverse direction of the insertion path, the side wall of the surrounding cover only needs to be arranged on one side of the button cover plate; when the button cover plate can slide out not only in the reverse direction of the insertion path but also forward, the side wall of the surrounding cover needs to be arranged on the front and back sides of the button cover plate.

[0015] A further technical solution may also be that the support arm includes a first support arm and a second support arm. The first support arm and the second support arm are connected to both ends of the rotating shaft. An installation gap is formed between the first support arm and the second support arm which are arranged at a relative interval. The connecting arm of the locking hook can pass through the installation gap and then lap on the rotating shaft. Further, in order to prevent the locking hook from disengaging from the installation gap, a first clamping arm is provided on the first support arm, and a second clamping arm is also provided on the second support arm. The first clamping arm and the second clamping arm protrude into the installation gap and are arranged at an interval. The first clamping arm and the second clamping arm can form an exit obstacle in the installation gap, which is beneficial to reducing the problem of the locking hook disengaging from the installation gap.

[0016] In order to reduce the overall thickness of the self-locking slider, the toggle button may interfere with the locking hook when it swings. Therefore, an avoidance groove is provided on the bottom wall of the button cover plate. When the button cover plate rotates and tilts, part of the connecting arm falls into the avoidance groove. By providing the avoidance groove, the problem of collision and interference between the button cover plate and the locking hook is well solved.

[0017] A further technical solution may also be that it further includes a pull tab, and the pull tab is arranged on the surrounding cover or the main body.

[0018] A zipper assembly includes a zipper tape and a self-locking slider connected to the zipper tape for joining or separating the zipper tape.

[0019] Since the present invention has the above characteristics and advantages, it can be applied to the self-locking slider and the zipper assembly to which it is applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an axonometric view of a zipper assembly applying the technical solution of the present invention;

[0021] Figure 2 is an axonometric view of the self-locking slider;

[0022] Figure 3 is an exploded view of the self-locking slider;

[0023] Figure 4 is a front sectional view of the self-locking slider, showing the locked state;

[0024] Figure 5 is a front sectional view of the self-locking slider, showing the unlocked state;

[0025] Figure 6 is an axonometric view of the main body;

[0026] Figure 7is a schematic diagram of the explosion structure of the toggle button;

[0027] Figure 8 is a schematic diagram of the axially-side structure of the locking hook;

[0028] Figure 9 is a schematic diagram of the axially-side structure of the surrounding cover. Detailed implementation manners

[0029] The following further describes the structures of the self-locking slider and the zipper assembly to which the technical solution of the present invention is applied with reference to the accompanying drawings. Except for those clearly stated as equivalent or alternative embodiments, the various detailed implementation solutions disclosed below can be selectively applied or combined and applied in one embodiment even if there is no direct association or synergistic relationship in terms of functions.

[0030] As Figures 1 to 4 shown, a zipper assembly is provided, which includes two side-by-side arranged chain tapes 1. Chain teeth 11 are provided on the edges of the chain tapes 1. The zipper assembly further includes a self-locking slider 2 connected to the chain tapes 1 for combining or separating the chain tapes 1. The self-locking slider 2 includes a main body 3. The main body 3 is the main structural component for the self-locking slider 2 to be movably connected to the chain tape 1. The main body 3 includes an upper plate 31, a lower plate 32, and a connecting column 33 disposed between the upper plate 31 and the lower plate 32. The upper plate 31 and the lower plate 32 are arranged parallel and spaced apart up and down. The connecting column 33 is connected to the right ends of the upper plate 31 and the lower plate 32. The upper plate 31, the lower plate 32, and the connecting column 33 define a chain tooth channel 30 extending left and right in a Y shape. The chain teeth 11 of the two chain tapes 1 are arranged in a staggered manner and connected to the chain tooth channel 30. When the self-locking slider 2 slides from left to right, the chain teeth 11 of the two chain tapes 1 are engaged and combined together; when the self-locking slider 2 slides reversely from right to left, the chain teeth 11 of the two chain tapes 1 are separated and separated to both sides respectively.

[0031] In order to enable the self-locking slider 2 and the chain tape 1 to achieve mutual locking connection, as Figures 2 to 6As shown, a tooth channel 30 and a keyhole 34 communicating with the tooth channel 30 are provided on the main body 3. In this embodiment, the keyhole 34 is arranged on the left side of the upper plate 31, and directly below the keyhole 34 is the converging section of the tooth channel 30, and the teeth 11 passing through this section of the tooth channel 30 are also in an engaged state. Correspondingly, a vertically penetrating column hole 35 is further provided on the right side of the upper plate 31 and the lower plate 32 (i.e., at the connection with the connecting column 33), and a protrusion 351 is further provided in the column hole 35. In addition, the self-locking slider 2 further includes an arcuate locking hook 4. The locking hook 4 includes a fixed end 41, a movable hook arm end 42, and a connecting arm 43 connecting the fixed end 41 and the hook arm end 42. In this embodiment, the connecting arm 43 is horizontally arranged left and right, and the fixed end 41 and the hook arm end 42 extend downward from both ends of the connecting arm 43. Among them, a T-shaped hook portion 44 is further provided at the lower end of the fixed end 41. When the fixed end 41 of the locking hook 4 is inserted downward into the column hole 35, the hook portion 44 can be engaged with the protrusion 351 in the column hole 35, so that the fixed end 41 of the locking hook 4 can be swingably connected to the main body 3. The hook arm end 42 can be inserted downward and pass through the keyhole 34 and extend into the tooth channel 30. The hook arm end 42 with a wide upper part and a pointed lower part is wedge-shaped, which makes it easy for the lower end of the hook arm end 42 to be inserted into the gap between the teeth 11 in the tooth channel 30, so that the locking hook 4 is connected to the chain belt 1. As can be seen from the above, the self-locking slider 2 can be connected to the chain belt 1 through the locking hook 4.

[0032] Further, in order to release the locked state of the self-locking slider 2 and the chain belt 1, when the connecting arm 43 is driven by a pressing force, it can drive the hook arm end 42 to move, that is, let the hook arm end 42 pass through the lock hole 34 and insert into the tooth channel 30 or let the hook arm end 42 retreat from the tooth channel 30 back into the lock hole 34. Obviously, when the hook arm end 42 retreats from the tooth channel 30 back into the lock hole 34, the hook arm end 42 will exit from the gap between the teeth 11 and thus separate from the chain belt 1, that is, release the locked state of the self-locking slider 2 and the chain belt 1. In order to swing the hook arm end 42, the self-locking slider 2 further includes a toggle button 5. The toggle button 5 includes a rotating bracket 6. The rotating bracket 6 includes a rotating shaft 61 and an arm 62 extending upward from the rotating shaft 61. The connecting arm 43 is lapped on the rotating shaft 61, and when the rotating shaft 61 rotates, it can swing the connecting arm 43 and also move the hook arm end 42. It should be noted that since the rotation of the rotating shaft 61 includes forward rotation and reverse rotation, there are at least the following two driving methods for the connecting arm 43: First, the locking hook 4 itself has or is subjected to a force in a certain direction and presses on the rotating shaft 61. For example, it is subjected to the force of a spring or a spring piece other than the toggle button 5 externally, or as the elastic force generated by the deformation of the locking hook 4 in this embodiment. The connecting arm 43 of the locking hook 4 swings downward and presses on the rotating shaft 61 and drives the hook arm end 42 to move downward through the lock hole 34 and insert into the tooth channel 30 to achieve locking. When the rotating shaft 61 rotates forward, it actively drives the connecting arm 43 to swing upward to achieve unlocking. When the rotating shaft 61 rotates reversely, the locking hook 4 is reset under its own or other external forces. It can be seen that this driving method is unidirectional. Second, the locking hook 4 is lapped on the rotating shaft 61, and the rotating shaft 61 drives the connecting arm 43 to swing during both forward and reverse rotations. This driving method is bidirectional.

[0033] In order to facilitate the stable engagement of the locking hook 4 with the rotating shaft 61 of the rotating bracket 6 when the locking hook 4 is installed on the main body 3, the arm 62 of the rotating bracket 6 includes a first arm 621 and a second arm 622. The first arm 621 and the second arm 622 are respectively connected to both ends of the rotating shaft 61. An installation gap is formed between the relatively spaced first arm 621 and second arm 622. When the connecting arm 43 of the locking hook 4 swings downward, it can pass through the installation gap and thus engage with the rotating shaft 61. The first arm 621 and the second arm 622 limit the swinging of the locking hook 4 in the front-rear direction, which is beneficial for the hook arm end 42 to move downward and insert into the lock hole 34. Further, in order to prevent the locking hook 4 from disengaging from the installation gap, a first clamping arm 623 is provided on the first arm 621, and a second clamping arm 624 is provided on the second arm 622. The first clamping arm 623 and the second clamping arm 624 protrude into the installation gap and are spaced apart. By providing the first clamping arm 623 and the second clamping arm 624, an exit obstacle can be formed in the installation gap, which is beneficial for reducing the problem of the locking hook 4 loosening and disengaging from the installation gap.

[0034] Further, a protrusion 63 is provided on the rotating shaft 61 of the rotating bracket. When the rotating bracket 6 rotates, the protrusion 63 can push the connecting arm 43 upward, thereby causing the connecting arm 43 to swing. The swinging of the connecting arm 43 further drives the swinging of the hook arm end 42.

[0035] Such as Figures 1 to 9As shown, the toggle button 5 further includes a button cover plate 7. The button cover plate 7 is horizontally inserted into the support arm 62, and the connecting arm 43 is located below the button cover plate 7. It also includes a surrounding cover 8 detachably connected to the main body 3. The surrounding cover 8 includes a surrounding cover side wall 81. The surrounding cover side wall 81 is located on the side of the button cover plate 7 but does not prevent the toggle button 5 from rotating, and is used to prevent the button cover plate 7 from withdrawing. In order to enable the button cover plate 7 to be inserted into the rotating bracket 6, a further technical solution may also be that there are a slide rail 64 and a slide groove 71. In this embodiment, the slide rail 64 is arranged on the support arm 62, and the slide groove 71 is arranged on the button cover plate 7. From the cross-section view, the support arm 62 is T-shaped and extends along the center line direction of the rotating shaft 61. The button cover plate 7 is inserted into the rotating bracket 6 along the center line direction of the rotating shaft 61 through the slide rail 64 and the slide groove 71 and can rotate together with the rotating bracket 6. As an equivalent implementation manner, the slide rail 64 may also extend and be arranged in a direction perpendicular to the center line direction of the rotating shaft 61. By splitting the toggle button 5 into the rotating bracket 6 and the button cover plate 7, during installation, first install and place the rotating bracket 6 on the main body, then install the locking hook 4, and then insert the button cover plate 7. Gradually from top to bottom, the swing arm end of the locking hook 4 is both lapped on the rotating shaft 61 and inserted between the rotating shaft 61 and the button cover plate 7, reducing mistakes during combined installation and being beneficial to improving the installation efficiency. In addition, the inserted and installed button cover plate 7 can not only cover the lower rotating bracket 6 and the locking hook 4, but also is convenient for disassembly and replacement. Button cover plates 7 of different colors and materials can be adapted to different application scenarios, increasing the adaptability of the self-locking pull head 2. In addition, by driving the locking hook 4 to switch between the locked and unlocked states through the toggle button 5, the problems of false locking or inaccurate locking position of the locking hook 4 are effectively reduced, further improving the use stability of the self-locking pull head 2.

[0036] In order to reduce the overall thickness of the self-locking pull head 2, when the toggle button 5 swings, its end may interfere with the locking hook 4. Therefore, an avoidance groove 72 is provided on the bottom wall of the button cover plate 7. When the button cover plate 7 rotates and tilts, a part of the connecting arm 43 falls into the avoidance groove 72. By providing the avoidance groove 72, the problem of collision and interference between the button cover plate 7 and the locking hook 4 is well solved.

[0037] The side wall 81 of the surrounding cover is mainly used to prevent the button cover plate 7 from sliding out. A further technical solution may be that the button cover plate 7 inserted on the support arm 62 can slide out along the extension direction of the slide rail 64 and the chute 71. For this purpose, at least part of the side wall 81 of the surrounding cover extends upward to the path where the button cover plate 7 slides out. Of course, according to the different plug-in installation structures, the arrangement of the side wall 81 of the surrounding cover may be different. When the button cover plate 7 only exits in the reverse direction of the insertion path, the side wall 81 of the surrounding cover only needs to be arranged on one side of the button cover plate 7; when the button cover plate 7 can both exit in the reverse direction of the insertion path and slide forward, the side wall 81 of the surrounding cover needs to be arranged on the front and back sides of the button cover plate 7. In this embodiment, the side wall 81 of the surrounding cover is arranged around the button cover plate 7, and an activity space is formed in the middle of the side wall 81 of the surrounding cover, and the toggle button 5 is movably arranged in the activity space. The surrounding cover 8 not only well blocks the rotating bracket, the locking hook 4 and part of the button cover plate 7, but also limits the sliding and loosening of the button cover plate 7, greatly improving the overall aesthetics of the self-locking slider 2. The locking hook 4 is hidden and installed under the button cover plate 7 and the surrounding cover 8, reducing the problem that sundries or fabrics are inserted under the connecting arm 43 of the locking hook 4 to affect the swing of the connecting arm 43, and greatly improving the moving stability of the self-locking slider 2.

[0038] Further, the rotating bracket 6 is rotatably connected to the main body 3 or the side wall 81 of the surrounding cover through the rotating shaft 61. Specifically, it can be at least divided into two installation cases. The first one is as Figures 1 to 3 shown. An axial mounting arm 36 is provided on the upper plate 31, and an upward mounting port is provided on the axial mounting arm 36. The rotating shaft 61 of the rotating bracket 6 can be placed into the mounting port from top to bottom, and then the axial mounting arm 36 is deformed by heating or extrusion to rotatably mount the rotating bracket 6 on the main body 3; the second one is that a downward mounting port (not shown in the figure) is provided on the inner side of the side wall 81 of the surrounding cover 8. During installation, the rotating bracket 6 is first placed on the upper plate 31, and when the surrounding cover 8 is installed, the rotating shaft 61 is snapped into the mounting port to achieve a rotational connection.

[0039] Further, it further includes a pull nose 82, and the pull nose 82 is provided on the surrounding cover 8 or the main body 3. A pull rope or a pull tab can be installed on the pull nose 82. In this way, when the self-locking slider 2 is unlocked, the self-locking slider 2 can be pulled by pulling the pull rope or the pull tab.

Claims

1. A self-locking slider, comprising a body and an arcuate locking hook. A tooth channel and a lock hole communicating with the tooth channel are provided on the body. The locking hook includes a fixed end, a movable hook arm end, and a connecting arm connecting the fixed end and the hook arm end. The fixed end is connected to the body. When the connecting arm is driven by a pressing force, the hook arm end can be driven to move, that is, the hook arm end can be inserted into the tooth channel through the lock hole or retracted from the tooth channel back into the lock hole; characterized in that, It further includes a toggle button, the toggle button includes a rotating bracket, the rotating bracket includes a rotating shaft and an arm extending upward from the rotating shaft, the connecting arm overlaps the rotating shaft, and when the rotating shaft rotates, the connecting arm can swing and the hook arm end can move; the toggle button further includes a button cover plate, the button cover plate is horizontally inserted on the arm, and the connecting arm is located below the button cover plate; it further includes a surrounding cover detachably connected to the main body, the surrounding cover includes a surrounding cover side wall, the surrounding cover side wall is located on the side of the button cover plate but does not prevent the toggle button from rotating, and is used to prevent the button cover plate from withdrawing; the rotating bracket is rotatably connected to the main body or the surrounding cover side wall through the rotating shaft.

2. The self-locking pull head according to claim 1, wherein It further includes a slide rail and a slide groove, the slide rail and the slide groove are respectively arranged on the arm and the button cover plate, and the button cover plate is inserted on the rotating bracket through the slide rail and the slide groove and can rotate together with the rotating bracket.

3. The self-locking pull head according to claim 2, wherein, The button cover plate inserted on the arm can slide out along the extending direction of the slide rail and the slide groove, and at least part of the surrounding cover side wall extends upward to the path where the button cover plate slides out.

4. The self-locking slider according to any one of claims 1 to 3, characterized in that, The arm includes a first arm and a second arm, the first arm and the second arm are connected to both ends of the rotating shaft, and an installation gap is formed between the relatively spaced first arm and second arm, and the connecting arm of the locking hook can pass through the installation gap and then overlap on the rotating shaft.

5. The self-locking pull head according to claim 4, wherein, A first clamping arm is provided on the first arm, and a second clamping arm is further provided on the second arm, and the first clamping arm and the second clamping arm protrude into the installation gap and are arranged at intervals.

6. The self-locking pull head according to claim 4, wherein A convex block is provided on the rotating shaft, and when the rotating bracket rotates, the convex block can make the connecting arm swing.

7. The self-locking slider according to any one of claims 1 to 3, wherein, An avoidance groove is provided on the bottom wall of the button cover plate, and when the button cover plate rotates and tilts, part of the connecting arm falls into the avoidance groove.

8. The self-locking slider according to any one of claims 1 to 3, characterized in that It further includes a pull nose, and the pull nose is provided on the surrounding cover or the main body.

9. A zipper assembly, comprising a zipper tape, characterized in that, It further includes a self-locking pull head as claimed in any one of claims 1 to 8 connected to the chain belt for combining or separating the chain belt.

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