Self-locking slider and zipper using the same

Abstract

The self-locking slider and the zipper applied by the slider include a slider body with a slider tooth channel; characterized in that a locking spring and an unlocking part are arranged on the slider body, the unlocking part includes a transmission part and a rotating arm arranged in transverse left and right and radially linked, and the transmission part and the rotating arm can rotate around a transverse shaft; the locking spring includes a reverse buckle part and a claw part, the reverse buckle part is positioned on the slider body, the claw part is movably inserted into the slider tooth channel, and the locking spring is pressed against the rotating arm; a pushing part capable of moving back and forth in the longitudinal direction is further arranged on the slider body, when the pushing part moves in the unlocking direction, the pushing part drives the rotating arm to rotate around the transverse shaft through the transmission part, and the rotating arm rotates around the transverse shaft while lifting the claw part of the locking spring to reduce the depth of the claw part inserted into the slider tooth channel; when the pushing part moves in the reverse direction to reset, the claw part of the locking spring is automatically reset, and the locking spring also drives the transmission part to rotate reversely around the transverse shaft to reset through the rotating arm.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of zippers, and in particular to a self-locking slider and a zipper using the same. BACKGROUND

[0002] A zipper can be used to open or close two strips of fabric by sliding a slider back and forth, which is very convenient. Zippers are widely used in clothing and bags. A general requirement for a zipper is that the slider can slide back and forth on the fabric strip smoothly. However, in some special clothing (such as sportswear or formal wear), the zipper should not be accidentally opened after being closed. Therefore, a self-locking zipper is the first choice. For example, the present applicant has proposed a self-locking slider for a zipper in the patent application CN202111194502.9, which forms a receiving space between an outer cover and a first wing plate, and an upper locking piece is arranged in the receiving space. The upper locking piece includes a support portion and a claw portion that can be inserted into a chain tooth channel and swing about the support portion. A first elastic body is arranged in the receiving space, and the first elastic body can act on the upper locking piece to make the claw portion inserted into the chain tooth channel. An unlocking portion is arranged in the receiving space and arranged transversely left and right with the first elastic body. The unlocking portion can move longitudinally in the space provided by the receiving space to have an unlocking position and a locking position. When the unlocking portion moves to the unlocking position, the unlocking portion transmits an unlocking force to the upper locking piece to reduce the depth of the claw portion inserted into the chain tooth channel. When the unlocking portion is in the locking position, the upper locking piece loses the unlocking force, and the first elastic body swings the claw portion of the upper locking piece to increase the depth of the claw portion inserted into the chain tooth channel. SUMMARY

[0003] The structure of a self-locking slider is various. One of the purposes of the present application is to provide a self-locking slider different from the prior art, which includes a slider main body having a chain tooth channel. The slider main body is provided with a locking elastic sheet and an unlocking piece. The unlocking piece includes a transmission portion and a rotating arm arranged transversely left and right and radially linked. The transmission portion and the rotating arm can rotate about a transverse shaft. The locking elastic sheet includes a reverse buckle portion and a claw portion. The reverse buckle portion is positioned on the slider main body, and the claw portion is movably inserted into the chain tooth channel. The locking elastic sheet is pressed against the rotating arm. A pushing portion is arranged on the slider main body and can move back and forth longitudally. When the pushing portion moves in the unlocking direction, the pushing portion drives the rotating arm to rotate about the transverse shaft through the transmission portion. The rotating arm rotates about the transverse shaft while lifting the claw portion of the locking elastic sheet to reduce the depth of the claw portion inserted into the chain tooth channel. When the pushing portion moves in the reverse direction to reset, the claw portion of the locking elastic sheet is automatically reset, and the locking elastic sheet also drives the transmission portion to rotate reversely about the transverse shaft through the rotating arm to reset.

[0004] Wherein, the element tooth channel is a channel for the element tooth to pass through. The common element tooth channel is Y-shaped, and a pair of element teeth can complete engagement or separation during sliding by using the above shape characteristics of the element tooth channel.

[0005] Wherein, the direction of moving the toggle back and forth is defined as the longitudinal direction from the relative moving direction of the toggle and the puller body; and the direction perpendicular to the longitudinal direction is the transverse direction.

[0006] Wherein, the toggle is a movable component arranged on the puller body, and is used for transmitting external unlocking force to the unlocking piece.

[0007] Wherein, the unlocking piece comprises a transmission part and a rotating arm arranged in transverse left and right directions and radially linked, that is, driving the transmission part to rotate can drive the rotating arm to rotate, and vice versa.

[0008] Wherein, the locking spring piece is an elastic component, and generally can be made of spring steel sheet such as No. 70 steel and 65Mn steel. The layout positions of the reverse buckle part and the claw part of the locking spring piece are various, for example, are separately arranged on the longitudinal two sides of the rotating arm, or are simultaneously arranged on the same side of the rotating arm. Since the reverse buckle part is positioned on the puller body, the movement space of the locking spring piece is limited, so that when the toggle moves in the unlocking direction and the claw part of the locking spring piece is lifted by the rotating arm, the locking spring piece will be elastically deformed and generate a rebound force opposite to the rotating direction of the rotating arm; when the toggle moves in the reverse direction to reset, the locking spring piece returns to the original shape, not only makes the claw part automatically return to the original depth position in the element tooth channel, but also releases the rebound force, and drives the transmission part to rotate reversely around the transverse shaft through the rotating arm.

[0009] According to the above technical scheme, compared with the prior art, the beneficial technical effects of the present application are that: first, the locking spring piece can be used to lock the puller on the zipper, and after the locking effect of the locking spring piece is released, the puller can smoothly slide on the zipper; second, since the locking spring piece and the unlocking piece have the above assembly relationship, the elasticity of the locking spring piece can also be used to drive the transmission part and the rotating arm to reset while automatically resetting, and the locking spring piece has dual purposes, which is beneficial to simplify the structure and installation operation of the puller.

[0010] The reset method of the actuating part is varied, and the following two reset technical solutions are further proposed. In the first reset technical solution, a reset spring is also provided on the pull head body. The reset spring is used to drive the actuating part to move and reset in the opposite direction. Thus, after the actuating part is released, it moves and resets under the action of the reset spring; simultaneously, the actuating part releases the transmission part, or drives the rotating arm to rotate in the opposite direction around the transverse axis through the transmission part, reducing the resistance to the deformation and restoration of the locking spring, allowing the claw of the locking spring to smoothly return to its original depth position in the chain tooth channel.

[0011] The second reset technology involves the locking spring plate driving the transmission part to rotate in the opposite direction around the transverse axis to reset via the rotating arm. Simultaneously, the transmission part rotates in the opposite direction to reset and also moves the actuating part in the opposite direction. Therefore, compared to the first reset technology, the pull head has a simpler structure and is easier to install.

[0012] Furthermore, the structures of the actuating and transmission parts are flexible and diverse, enabling unidirectional or bidirectional unlocking by adjusting their structures. In one application, a unidirectional unlocking method can be used where the actuating part, transmission part, and rotating arm are each single-arm shaped, and the actuating part can only drive the transmission part in one longitudinal direction. In another application, one of the following bidirectional unlocking methods can be selected.

[0013] The first type of bidirectional unlocking structure: the actuating part includes a first actuating part and a second actuating part, with a gap between the first actuating part and the second actuating part, and the transmission part extends into the gap. The rotating arm includes a first rotating arm and a second rotating arm respectively placed on the left and right sides of the transverse axis. In this way, the first actuating part and the second actuating part can drive the rotating arm to rotate around the transverse axis in both longitudinal directions through the transmission part.

[0014] The second type of bidirectional unlocking structure: The transmission part includes a first transmission part and a second transmission part, with a gap between the first transmission part and the second transmission part, and the actuating part extends into the gap. The rotating arm includes a first rotating arm and a second rotating arm respectively placed on the left and right sides of the transverse axis. In this way, the actuating part can drive the rotating arm to rotate around the transverse axis in two longitudinal directions through the first transmission part and the second transmission part.

[0015] A further technical solution may be that the zipper head body has an upper piece and a lower piece, the chain tooth channel is formed between the upper piece and the lower piece, and also includes a cover plate covering the upper piece, the locking spring and the unlocking member are disposed between the upper piece and the cover plate, the actuating part is movably disposed on the cover plate, or the actuating part is fixed on the cover plate and the cover plate can move longitudinally.

[0016] A further technical solution is that the locking spring is bow-shaped, with a downwardly curved bow section in the middle, which presses against the rotating arm. In this way, the bow section, relying on its own elastic force, presses down on the rotating arm while simultaneously keeping the claw inserted into the chain tooth channel to achieve locking of the pull head.

[0017] A further technical solution may also include a connecting post connecting the rear end of the upper piece and the rear end of the lower piece. The rear end of the upper piece is provided with a fixing hole, and the front end is provided with a through hole. The fixing hole passes through the upper piece, the connecting post, and the lower piece. The claw is provided at the front end of the locking spring, and the tail end of the locking spring is provided with a buckle. The buckle is inserted into and positioned in the fixing hole, and the claw passes through the through hole and is movably inserted into the chain tooth channel.

[0018] Because of the above advantages, self-locking zipper pulls can be applied to zippers, which include a zipper belt and a self-locking zipper pull, with the self-locking zipper pull arranged on the zipper belt.

[0019] Because of the above-mentioned features and advantages, this invention can be applied to zippers with self-locking zipper pulls and their applications. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the zipper structure in the front view using the technical solution of this invention;

[0021] Figure 2 This is a schematic diagram of the exploded structure of the aforementioned slider;

[0022] Figure 3 This is a schematic diagram of the front view of the slider.

[0023] Figure 4 yes Figure 3 A cross-sectional view of the structure along the AA direction, showing the locked state;

[0024] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0025] Figure 6 yes Figure 3 A cross-sectional view of the structure along the BB direction, showing the unlocked state;

[0026] Figure 7 This is a schematic diagram of the axial structure of the actuating element;

[0027] Figure 8 This is a schematic diagram of the cover plate in the axial direction.

[0028] Figure 9 This is a schematic diagram of the axial structure of the actuating element, showing the structure of the actuating element in the second embodiment;

[0029] Figure 10 This is a schematic diagram of the cover plate in the axial direction, showing the structure of the cover plate in the second embodiment. Detailed Implementation

[0030] A self-locking zipper pull 2 ​​includes a zipper pull body with a chain tooth channel 20; a locking spring 4 and an unlocking component 5 are provided on the zipper pull body, the unlocking component 5 includes a transmission part 51 arranged horizontally and radially linked with a rotating arm 52, the transmission part 51 and the rotating arm 52 being rotatable about a horizontal axis 0; the locking spring 4 includes a buckle part 41 and a claw part 42, the buckle part 41 being positioned on the zipper pull body, the claw part 42 being movably inserted into the chain tooth channel 20, and the locking spring 4 pressing against the rotating arm 52; the zipper pull body is also provided with a longitudinal... The actuating part 31, which moves back and forth, causes the rotating arm 52 to rotate around the transverse axis 0 via the transmission part 51 when the actuating part 31 moves in the unlocking direction. While the rotating arm 52 rotates around the transverse axis 0, it also lifts the claw part 42 of the locking spring 4 to reduce its insertion depth into the chain tooth channel 0. When the actuating part 31 moves in the opposite direction to reset, the claw part 42 of the locking spring 4 resets autonomously. At the same time, the locking spring 4 also causes the transmission part 51 to rotate in the opposite direction around the transverse axis 0 via the rotating arm 52 to reset.

[0031] The self-locking zipper pull 2 ​​and the structure of the zipper to which the above-described technical solution is applied will be further described below with reference to the accompanying drawings. Except where explicitly stated that they are equivalent or alternative implementation schemes, the various implementation details disclosed below may be selectively applied or combined in a single embodiment even if they are not directly related or synergistic in function.

[0032] like Figure 1 The zipper shown includes a pair of chain straps 1 positioned left and right, and a self-locking zipper pull 2 ​​mounted on the chain straps 1. Chain teeth 11 are arranged at the edges of the chain straps 1, and the self-locking zipper pull 2 ​​allows the chain teeth 11 to engage or disengage. The self-locking zipper pull 2 ​​enables a self-locking function, illustrated by two specific examples:

[0033] The first embodiment can achieve one-way unlocking, such as Figures 2-8 As shown, the self-locking zipper pull 2 ​​includes a zipper body with an upper piece 21 and a lower piece 22. The upper piece 21 and the lower piece 22 are spaced apart to form a longitudinally arranged zipper tooth channel 20. It also includes a connecting post 23, which connects to the rear ends of the upper piece 21 and the lower piece 22. The connecting post 23 causes the zipper tooth channel 20 to form a branching channel structure at the rear ends. Pushing the self-locking zipper pull 2 ​​from the rear end to the front end opens the zipper, and vice versa, closes the zipper. A longitudinally movable cover plate 3 is provided on the upper piece 21; grooves 24 are provided on the lateral sides of the upper piece 21, and slide rails 34 are provided on the lateral sides of the cover plate 3. The cover plate 3 is movably arranged on the upper piece 21 by the cooperation of the slide rails 34 and the grooves 24.

[0034] A locking spring 4 is provided between the upper plate 21 and the cover plate 3. The locking spring 4 is an arc-shaped elastic component, including a buckle 41 at the tail end, a claw 42 at the head end, and a middle part 43 of the arc connecting them. The upper plate 21 has a fixing hole 25 at the rear end and a through hole 26 at the front end. The fixing hole 25 passes through the upper plate 21, the connecting post 23, and the lower plate 22. The buckle 41 of the locking spring 4 is inserted into and positioned in the fixing hole 25, and the buckle 41 becomes the buckle 41 of the locking spring 4. The claw 42 of the locking spring 4 passes through the through hole 26 and is movably inserted into the chain tooth channel 20. The locking spring 4 presses down against the rotating arm 52 by its own elastic force and keeps the claw 42 inserted in the chain tooth channel 20 to achieve locking of the pull head.

[0035] The unlocking element 5 is provided between the upper plate 21 and the cover plate 3. The unlocking element 5 is arranged laterally below the locking spring 4. The unlocking element 5 includes a transmission part 51 arranged laterally and radially linked with a rotating arm 52. The transmission part 51 and the rotating arm 52 can rotate around the transverse axis O. The locking spring 4 presses against the rotating arm 52. In this embodiment, the middle part 43 of the bow body bends downward and presses against the rotating arm 52. Figure 7As shown, the unlocking component 5 is provided with two transmission parts 51 located on the left and right sides of the rotating arm 52. When the cover plate 3 is in its original position, the transmission parts 51 extend radially upwards, and the two transmission parts 51 extend at the same angle. The rotating arm 52 extends longitudinally towards the rear end of the upper plate 21, thus forming a certain angle between the transmission parts 51 and the rotating arm 52. Furthermore, in order to allow the unlocking component 5 to rotate around the transverse axis O, a positioning groove 28 is provided on the upper plate 21. The axial ends of the unlocking component 5 are rotatably arranged in the positioning groove 28, so that the unlocking component 5 can stably rotate around the transverse axis O in the positioning groove 28.

[0036] To drive the unlocking member 5 to rotate, a toggle part 31 is also provided on the cover plate 3. The toggle part 31 is fixed to the cover plate 3 (in other embodiments, the cover plate 3 may be fixed to the upper piece 21, and the toggle part 31 may be movably mounted on the cover plate 3, i.e., the toggle part 31 can move relative to the cover plate). When the cover plate 3 moves back and forth longitudinally, the toggle part 31 also moves back and forth longitudinally with the cover plate 3. Longitudinally, the projection of the toggle part 31 and the longitudinal direction of the transmission part 51 at least partially overlaps. The toggle part 31, the transmission part 51, and the rotating arm 52 are each single-arm shaped, and the toggle part 31 can only drive the transmission part 51 in one of the longitudinal directions. The specific unlocking and locking actions are as follows: Figure 4 and Figure 5As shown, when the cover plate 3 is pushed longitudinally towards the front end of the upper plate 21, the longitudinally moving actuating part 31 can drive the rotating arm 52 to rotate around the transverse axis O (defined as the positive direction of rotation) by driving the transmission part 51. While the rotating arm 52 rotates around the transverse axis O, it also lifts the claw part 42 of the locking spring 4 to reduce its insertion depth into the chain tooth channel 20, thereby unlocking the self-locking zipper 2 and allowing the zipper to slide smoothly on the chain belt 1. Since the buckle part 41 is positioned on the zipper body, it limits the movement space of the locking spring 4. During the above process, the locking spring 4 will undergo elastic deformation and generate a rebound force opposite to the rotation direction of the rotating arm 52. When the pushing force acting on the cover plate 3 is released, the locking spring 4 returns to its original shape, not only causing the claw 42 to autonomously return to its original depth position in the zipper tooth channel 20, but also releasing the rebound force. Under the pressure of the rebound force, the rotating arm 52 rotates in the opposite direction, thereby driving the transmission part 51 to rotate in the opposite direction around the transverse axis 0 to reset. At the same time, the transmission part 51 drives the cover plate 3 to move in the opposite direction and reset through the actuating part 31. This structure makes it less likely for the zipper pull to come loose when the zipper is zipped up or down, and it can release the locking spring 4 while opening the zipper, making opening the zipper easier and smoother, and also conforming to people's daily usage habits.

[0037] Furthermore, a return spring 6 is also provided on the pull head body, which is used to drive the actuating part 31 to move and reset in the opposite direction. In this embodiment, the return spring 6 is disposed between the upper plate 21 and the cover plate 3. In this way, after the cover plate 3 is released, the cover plate 3 can automatically reset under the action of the return spring 6; this also allows the actuating part 31 to actively move away from the transmission part 51, reducing the resistance of the locking spring 4 pressing down to reset, and also facilitating the smooth reset of the claw part 42 of the locking spring 4. Figure 4 , Figure 7 and Figure 8 As shown, to position the return spring 6, a first protruding boss 211 is provided on the upper plate 21, and a first positioning hole is provided on the first boss 211. A second protruding boss 33 extending downward is also provided on the cover plate 3, and a second positioning hole is provided on the second boss 33. The two ends of the return spring 6 are respectively connected to the first positioning hole and the second positioning hole. In order to prevent the cover plate 3 from detaching from the upper plate 21, a raised material platform 214 is provided at the tail end of the slide groove 24. When the slide rail 34 of the cover plate 3 slides completely into the slide groove 24, the material platform 214 is deformed by squeezing and extends into the moving path of the slide rail 34, thereby preventing the cover plate 3 from being pushed backward and detached from the slide groove 24 by the return spring 6.

[0038] To allow sufficient space for the locking spring 4 and the unlocking element 5 to move, a recess 30 is provided on the lower side wall of the cover plate 3. The actuating part 31 is disposed in the recess 30 and extends downward, while the transmission part 51 extends upward into the recess 30 and overlaps with the longitudinal projection of the actuating part 31. The recess 30 provides more space for the transmission part 51, the rotating arm 52, and the locking spring 4. Furthermore, an upwardly bulging boss 35 is provided on the upper wall of the cover plate 3. This increases the height space of the recess 30 and also increases the surface roughness of the cover plate 3 to facilitate pushing.

[0039] The second embodiment is as follows: it is an improvement on the first embodiment to achieve bidirectional unlocking. For example... Figure 9 As shown, the transmission part 51 on the unlocking member 5 includes a first transmission part 511 and a second transmission part 512. Viewed along the transverse axis O, the first transmission part 511 and the second transmission part 512 extend upwards at a certain angle and form a space between them. A first actuating part 31 extends downwards into the space between them. The rotating arm 52 includes a first rotating arm 521 and a second rotating arm 522 respectively positioned on the left and right sides of the transverse axis O. Thus, the unlocking member 5 can lift the locking spring 4 to unlock regardless of whether it rotates forward or backward. To allow the rotating arm 52 to rotate freely, an avoidance hole (not shown in the figure) can be provided on the upper plate 21 at the position of the rotating arm 52. Additionally, a return spring 6 can also be provided between the cover plate 3 and the upper plate 21. However, unlike the first embodiment, the return spring 6 is used to return the cover plate 3 to the middle position of its longitudinal movement stroke, so that the cover plate 3 can move back to the middle position when moving forward or backward. As another alternative, the transmission part 51 extends in one radial direction, such as... Figure 10 As shown, the actuating part 31 includes a first actuating part 311 and a second actuating part 312, with a gap between the first actuating part 311 and the second actuating part 312. The transmission part 51 extends into the gap. Thus, when the cover plate 3 moves longitudinally towards the first end of the upper plate 21, the first actuating part 311 can drive the transmission part 51 to rotate, and when it moves longitudinally towards the tail end of the upper plate 21, the second actuating part 312 can also drive the transmission part 51 to rotate.

Claims

1. A self-locking zipper pull, comprising a zipper pull body having a chain tooth channel; characterized in that, The zipper pull body is provided with a locking spring and an unlocking component. The unlocking component includes a transmission part and a rotating arm arranged horizontally and radially linked, which can rotate around a horizontal axis. The locking spring includes a buckle part and a claw part. The buckle part is positioned on the zipper pull body, and the claw part is movably inserted into the chain tooth channel. The locking spring is pressed against the rotating arm. The zipper pull body is also provided with a toggle part that can move back and forth longitudinally. When the toggle part moves in the unlocking direction, it drives the rotating arm to rotate around the horizontal axis through the transmission part. While rotating around the horizontal axis, the rotating arm also lifts the claw part of the locking spring to reduce its insertion depth into the chain tooth channel. When the toggle part moves in the opposite direction to reset, the claw part of the locking spring resets autonomously, and the locking spring also drives the transmission part to rotate in the opposite direction around the horizontal axis to reset via the rotating arm. The zipper head body has an upper plate and a lower plate, the chain tooth channel is formed between the upper plate and the lower plate, and also includes a cover plate covering the upper plate. The locking spring and the unlocking member are disposed between the upper plate and the cover plate. The actuating part is movably disposed on the cover plate, or the actuating part is fixed on the cover plate and the cover plate can move longitudinally.

2. The self-locking zipper pull according to claim 1, characterized in that, The pull head body is also provided with a reset spring, which is used to drive the toggle part to move and reset in the opposite direction.

3. The self-locking zipper pull according to claim 1, characterized in that, When the locking spring contacts drive the transmission unit to rotate in the opposite direction around the transverse axis to reset via the rotating arm, the transmission unit rotates in the opposite direction to reset and simultaneously moves the actuating part in the opposite direction to reset.

4. The self-locking zipper pull according to claim 1, characterized in that, The actuating part includes a first actuating part and a second actuating part, with a gap space formed between the first actuating part and the second actuating part, and the transmission part extends into the gap space; the rotating arm includes a first rotating arm and a second rotating arm respectively placed on the left and right sides of the transverse axis.

5. The self-locking zipper pull according to claim 1, characterized in that, The transmission part includes a first transmission part and a second transmission part, with a gap space between the first transmission part and the second transmission part, and the actuating part extends into the gap space; the rotating arm includes a first rotating arm and a second rotating arm respectively placed on the left and right sides of the transverse axis.

6. The self-locking zipper pull according to claim 1, characterized in that, The actuating part, the transmission part, and the rotating arm are each in the shape of a single arm, and the actuating part can only drive the transmission part in one of the longitudinal directions.

7. The self-locking zipper pull according to claim 1, characterized in that, The locking spring is bow-shaped, thus having a downward-curving bow-shaped middle section that presses against the rotating arm.

8. The self-locking zipper pull according to claim 7, characterized in that, It also includes a connecting post connecting the rear end of the upper piece and the rear end of the lower piece. The rear end of the upper piece is provided with a fixing hole and the front end is provided with a through hole. The fixing hole passes through the upper piece, the connecting post and the lower piece. The claw is provided at the front end of the locking spring. The tail end of the locking spring is provided with a buckle. The buckle is inserted into and positioned in the fixing hole. The claw passes through the through hole and is movably inserted into the chain tooth channel.

9. A zipper, comprising a chain strap, characterized in that, It also includes the self-locking zipper head as described in any one of claims 1 to 8, wherein the self-locking zipper head is arranged on the chain belt.

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