Two-way slider and zipper for two-way meshing zipper

Abstract

Two-way slider and zipper for two-way meshing zipper, characterized in that the two-way slider includes a base and a changing member movably mounted on the base. A slider passage for slider teeth to pass through is constructed based on the base. The changing member is used to manage the widths of the slider passages at at least both ends of the base respectively. Among them, based on the slider tooth output end and the slider tooth input end determined by the current moving direction of the two-way slider, the changing member can make the width of the slider passage at the current slider tooth output end suitable for a pair of slider teeth to pass through and mesh and slide out of the two-way slider, and at the same time can also make the width of the slider passage at the current slider tooth input end suitable for a pair of non-meshed slider teeth arranged side by side to pass through side by side and enter the two-way slider; the changing member can adjust the positions of the changing members at both ends according to the moving direction of the two-way slider so as to manage the widths of the slider passages at both ends, greatly improving the usability of the two-way slider.

Description

Technical Field

[0001] The present invention relates to the technical field of zippers, and particularly to a two-way meshing zipper and a two-way slider used on the two-way meshing zipper. Background Art

[0002] Zippers are commonly used products. In order to improve the convenience of using zippers, the applicant's earlier Chinese utility model patent with the patent number CN203168188U and the invention title "Woven article capable of being quickly taken off conveniently" discloses a quick-release zipper 3 sewn on a trouser leg 1. The quick-release zipper 3 includes a pair of chain tapes disposed left and right and a slider 32. Upper stop structure members and lower stop structure members 33 are respectively provided at both ends of the pair of chain tapes. The chain tooth portions in the middle positions of the pair of chain tapes are easy-to-disengage tooth regions 31. A pulling member 2 is sewn on the fabric at the side position of the easy-to-disengage tooth region 31. When in use, after the lower stop structure members 33 of the pair of chain tapes are combined, they are pulled upward by the slider 32 and locked on the upper stop structure member, so that the quick-release zipper 3 is completely locked. If it is desired to quickly open the quick-release zipper 3 at this time, the user can grasp the pulling member 2 and drag it outward to separate and disengage the chain teeth in the easy-to-disengage tooth region 31 beside the pulling member 2, and then continue to pull the pair of chain tapes to completely open all the chain teeth of the zipper 3.

[0003] Although this kind of quick-release zipper has the advantages of being quickly and conveniently opened, there are still certain deficiencies in its application. For example, after some of the chain teeth of the quick-release zipper 3 are separated and disengaged, the separated chain teeth will hinder the reverse pulling of the slider 32 from top to bottom. At this time, it is very difficult to close the separated chain teeth by the slider 32. To close a pair of chain tapes with partial tooth disengagement, it is necessary to completely open the pair of chain tapes of the quick-release zipper 3 and then re-close them in one direction from start to end each time. That is, each time the slider needs to be placed at a fixed starting part of the zipper (also commonly called the lower stop), and then the head of the chain teeth is inserted into the slider to start meshing to the upper stop position, which brings certain inconvenience to the user, especially it is basically not applicable to closed-end zippers at both ends of pocket-like fabrics such as small boxes and clothing pockets. Summary of the Invention

[0004] In view of the above technical problems, the present invention provides a two-way slider for a two-way meshing zipper. By directly moving the slider forward or backward, the slider can directly engage the teeth of the zipper that are respectively opened on both sides of the slider. The two-way slider is characterized in that it includes a base and a changing member movably mounted on the base. A tooth channel for the teeth to pass through is constructed based on the base. The changing member is used to manage the widths of the tooth channels at at least two ends of the base. Based on the tooth output end and the tooth input end determined by the current moving direction of the two-way slider, the changing member can make the width of the tooth channel at the current tooth output end suitable for a pair of teeth to pass through and engage and slide out of the two-way slider, and at the same time can make the width of the tooth channel at the current tooth input end suitable for a pair of unmeshed teeth arranged side by side to pass through side by side and enter the two-way slider.

[0005] Among them, the tooth channel is a space for the teeth to pass through. A pair of teeth arranged side by side can slide back and forth in the tooth channel, and the width of the tooth channel can change under the influence of other components (such as the changing member).

[0006] Among them, the changing member is a component that can move on the base to manage the width of the tooth channel. The moving mode of the changing member is diverse. It can move up and down at the upper and lower sides of the tooth channel, or move or swing at the left and right sides of the tooth channel. The purpose is to make at least part of the wall of the changing member cooperate with the wall of the base to change the width of the tooth channel.

[0007] Among them, the changing member is used to manage the widths of the tooth channels at at least two ends of the base, which means that the widths of at least two sections of the tooth channel can be variably adjusted through the changing member. The tooth channels at both ends of the base refer to the tooth channels at the tooth input end and the tooth output end. The management of the tooth channel width at least includes widening, narrowing, and the converging transition from wide to narrow of the tooth channel width.

[0008] Among them, the tooth output end and the tooth input end determined based on the current moving direction of the two-way slider mean that the tooth output end and the tooth input end can be changed, and they are determined according to the relative moving direction of the slider and the teeth. That is, when the moving direction of the two-way slider is switched, the tooth channel at the original tooth entry end will become the tooth channel at the tooth output end, and the tooth channel at the original tooth output end will become the tooth channel at the tooth entry end.

[0009] According to the above technical scheme, compared with the prior art, the beneficial technical effects of the present invention are: first, the base and the changing member movably installed on the base jointly construct a chain tooth channel for allowing the chain teeth to pass through, and the width of the chain tooth channel can be managed through the changing member, which can not only make the chain tooth channel at the chain tooth input end wider so that a pair of unengaged chain teeth can pass side by side, but also make the chain tooth channel at the chain tooth output end narrower so that a pair of unengaged chain teeth can be engaged and a pair of engaged chain teeth can leave the chain tooth channel at the chain tooth output end; second, the changing member is used to manage the width of the chain tooth channel at least at both ends of the base, and when the two-way slider moves in the forward direction or the reverse direction, the changing member can adapt to the moving direction of the two-way slider to adjust the positions of the changing members at the two ends to manage the width of the chain tooth channels at these two ends, so as to achieve that the two-way slider can engage the opened chain teeth regardless of whether it moves in the forward direction or the reverse direction, thereby greatly improving the convenience of use of the two-way slider.

[0010] In order to enable the chain teeth to form a meshing state when outputting at the output end of the chain tooth channel, based on the chain tooth output end and the chain tooth input end determined by the current moving direction of the two-way pull head, the changing member constructs the chain tooth channel at the chain tooth output end into an eight-shaped groove that gradually narrows along the moving direction of the chain tooth, and the eight-shaped groove can guide a pair of chain teeth that are not engaged but arranged side by side on the left and right to gradually gather together to make them mesh.

[0011] The moving direction of the chain teeth refers to the direction in which the chain teeth move relative to the slider. For example, if the slider moves in the forward direction on the zipper, the chain teeth move in the reverse direction relative to the slider. The eight-shaped groove is a spatial channel for the chain teeth to pass through, and is one section of the chain teeth channel. The eight-shaped groove is set to gradually narrow along the moving direction of the chain teeth, that is, when the engaged chain teeth enter the eight-shaped groove, the channel width starts to be relatively wide, and the channel width gradually narrows as the chain teeth move forward. In this way, on the one hand, the wide entrance is conducive to allowing a pair of unengaged and side-by-side chain teeth to enter the eight-shaped groove. On the other hand, the wall of the changing member of the eight-shaped groove is arranged obliquely toward the output end of the chain teeth, which is conducive to guiding the chain teeth to move toward the narrowed outlet of the eight-shaped groove and squeeze a pair of chain teeth to mesh together. The form of the changing member forming the eight-shaped groove is diverse, and two specific implementation methods are further explained below.

[0012] In the first implementation method, the changing member is in the shape of a strip and a swing shaft is arranged at the central position of the changing member. The two changing members are swingably arranged on the left and right sides of the base through their swing shafts. The two changing members extend to the two end positions of the base respectively. The two changing members swing in response to the movement of the two-way slider and change the chain tooth channel at the chain tooth output end into an eight-shaped groove. At the same time, the chain tooth channel at the chain tooth input end is changed to allow a pair of non-engaged and left-right arranged chain teeth to pass side by side into the two-way slider. In this implementation, the figure-eight groove is defined by two changing members swingably arranged on the left and right sides of the base, wherein the two changing members swing in response to the movement of the bidirectional slider, which means that when the bidirectional slider moves in the forward direction or the reverse direction, the two changing members can swing toward each other by themselves or under the push of other auxiliary components of the slider, and after the two changing members swing, an figure-eight groove gradually narrowing along the moving direction of the chain tooth can be formed, so that the width of the chain tooth channel, especially the chain tooth output end and the chain tooth input end, can be conveniently managed by the two changing members.

[0013] In a second implementation method, the changing member is saddle-shaped and has left and right side walls, and the left and right side walls form the figure-eight groove; two of the changing members are disposed at the two ends of the base and are movably arranged on the base along the up and down directions, and based on the chain tooth output end and the chain tooth input end determined by the current moving direction of the two-way slider, the changing member located at the chain tooth output end extends into the chain tooth channel in response to the movement of the two-way slider, so that the chain tooth channel at the chain tooth output end can be constructed into a figure-eight groove, and the changing member located at the chain tooth input end moves upward in response to the movement of the two-way slider to avoid the chain teeth, so that the chain tooth channel at the chain tooth input end is changed to allow a pair of non-engaged and left-right arranged chain teeth to pass side by side and enter the two-way slider. In this implementation, the figure-eight groove is formed by the left and right side walls of the changing member, and the chain tooth channel is further managed by sinking into the chain tooth channel. The changing member that can move up and down is set at both ends of the base, and the two changing members can change their positions in the chain tooth channel with the moving direction of the two-way pull head. This is beneficial for a pair of unengaged chain teeth to enter the chain tooth channel, and can also gather and mesh the chain teeth passing through the figure-eight groove through the left and right side walls.

[0014] In order to enable the changing member to move in response to the movement of the two-way slider, the two-way slider further includes an actuating member movably disposed on the base. The actuating member can correspondingly move on the base in response to the driving force for driving the two-way slider to move forward and backward. The changing member manages the width of the chain tooth channel in response to the movement of the actuating member. Among them, the actuating member can correspondingly move on the base in response to the driving force for driving the two-way slider to move forward and backward, which means that the actuating member moves because it is subjected to the force for driving the two-way slider to move, that is, when the two-way slider is driven to move by an external force, the actuating member will also move; on the other hand, the moving direction and manner of the actuating member are diverse, and it can be a movement in the same direction as the movement of the two-way slider, or a swing or rotation, but its purpose is to touch the changing member to move through the movement of the actuating member so as to increase the width of the chain tooth channel at the input end of the chain teeth and narrow the width of the chain tooth channel at the output end of the chain teeth, thereby facilitating the entry and engagement of the chain teeth.

[0015] A further technical solution may also be that the base includes a first plate body, a second plate body located above the first plate body, and a central column connecting the first plate body and the second plate body. The chain tooth channel is arranged between the first plate body and the second plate body. The central column divides the central area of the chain tooth channel into a left chain tooth channel and a right chain tooth channel that can allow the left and right chain teeth of the zipper to pass through. The actuating member is slidably disposed on the second plate body. In this way, the height of the chain tooth channel can be better controlled by the first plate body and the second plate body, which is beneficial to the smooth movement of the chain teeth in the chain tooth channel; and the central column can enable a pair of chain teeth passing through the chain tooth channel to be rearranged neatly left and right and prepare for subsequent engagement.

[0016] Due to the above advantages of the two-way slider, it can be applied to zipper products. The two-way slider is slidably disposed on a pair of the chain teeth; among all the chain teeth on the inner sides of a pair of the chain tapes, there is a quick-release chain tooth area. The meshing force of the chain teeth in the quick-release chain tooth area is suitable for being opened without the aid of the two-way slider. The two-way slider is used to mesh the opened chain teeth on any one of its two sides. Such a zipper can not only quickly open the meshed chain teeth on a pair of the chain tapes through the quick-release chain tooth area, but also mesh the unmeshed chain teeth on a pair of opened chain tapes through one two-way slider, greatly improving the use convenience of the zipper.

[0017] A further technical solution may also be that upper stops and lower stops are respectively arranged at both ends of the zipper. The upper stops connect the left ends of a pair of the chain tapes together, and the lower stops connect the right ends of a pair of the chain tapes together. The widths of the upper stops and the lower stops are not greater than the width of the chain tooth channels at the output ends of the chain teeth. When the two-way slider moves to the leftmost or rightmost end, at least part of the upper stops or the lower stops can enter the chain tooth channels of the two-way slider. In this way, when the two-way slider moves leftward or rightward to the left end or the right end of the zipper, the two-way slider can be stopped by the upper stops or the lower stops; if the two-way slider is made to move in the reverse direction under a reverse acting force at this time, whether a pair of the chain tapes are opened or not, the widths of the upper stops and the lower stops remain unchanged. At this time, the changing member at the output end of the chain teeth can easily move to both sides of the upper stops or the lower stops so as to narrow the width of the chain tooth channels at the output ends of the chain teeth, and enable the chain teeth on a pair of the chain tapes to be engaged together when the two-way slider moves in the reverse direction.

[0018] Due to the above characteristics and advantages of the present invention, it can be applied to two-way sliders and two-way meshing zippers using the two-way sliders. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a two-way meshing zipper using the two-way slider in the front view direction;

[0020] Figure 2 is an exploded structural diagram of the first embodiment of the two-way slider;

[0021] Figure 3 is a schematic structural diagram of the first embodiment of the two-way slider in the front view direction;

[0022] Figure 4 is Figure 3 a sectional structural diagram taken along the A-A direction in;

[0023] Figure 5 is Figure 3 a sectional structural diagram of the end face taken along the B-B direction in;

[0024] Figure 6 is an exploded structural diagram of the second embodiment of the two-way slider;

[0025] Figure 7 is a sectional structural diagram of the second embodiment of the two-way slider in the front view direction;

[0026] Figure 8 is Figure 7 a sectional structural diagram taken along the C-C direction in;

[0027] Figure 9is a schematic exploded view of the third embodiment of the two-way slider;

[0028] Figure 10 is a schematic front view of the zipper, showing the state when the two-way slider is at the leftmost end;

[0029] Figure 11 is Figure 10 a schematic cross-sectional structure view in the D-D direction in. Specific embodiments

[0030] The two-way slider applying the technical solution of the present invention and the two-way meshing zipper applying the two-way slider will be further described below with reference to the accompanying drawings.

[0031] As Figure 1 shown, the two-way meshing zipper includes a pair of chain tapes 1 arranged left and right and extending axially, and chain teeth 2 are respectively arranged axially on the inner sides of the pair of chain tapes 1. All the chain teeth 2 on the inner sides of the pair of chain tapes 1 include a quick-release chain tooth area 21 and a non-quick-release area 22. The quick-release chain tooth area 21 is located in the middle area of the chain tape 1, and the non-quick-release area 22 is distributed on both sides of the quick-release chain tooth area 21. The meshing force of the chain teeth in the quick-release chain tooth area 21 is less than that of the non-quick-release area 22, and the chain teeth 2 in the quick-release chain tooth area 21 can be torn by the user without the help of a slider, and thus all the meshed chain teeth 2 can be opened along the opened chain teeth 2 in the quick-release chain tooth area 21, which is very convenient to use.

[0032] In order to enable the opened chain teeth 2 to be meshed together again, as Figures 1 to 5 shown, the two-way meshing zipper further includes a two-way slider 3 and a pull tab 9 arranged on the pair of chain tapes 1. The pull tab 9 is arranged on the two-way slider 3. By pulling the pull tab 9, the two-way slider 3 can slide axially in the positive or negative direction on the chain teeth 2. The two-way slider 3 is used to receive the opened chain teeth 2 at either end thereof and mesh them together to connect the pair of chain tapes 1. The two-way slider 3 includes a base 4, and a chain tooth passage 40 for allowing the chain teeth 2 to pass through is constructed based on the base 4. The base 4 or the chain tooth passage 40 includes two ends, one is a chain tooth input end, which is the front part of the chain tooth passage 40, and the chain teeth 2 enter the two-way slider 3 through the chain tooth input end, and the other is a chain tooth output end, which is the rear part of the chain tooth passage 40, and the chain teeth 2 leave the two-way slider 3 through the chain tooth output end.

[0033] The two-way slider 3 further includes changing members (5a, 5b, 5c, 5d) movably mounted on the base 4, and the changing members (5a, 5b, 5c, 5d) are used to manage the width of the tooth path 40 at at least both ends of the base 4. Among them, the changing members (5a, 5b, 5c, 5d) can make the width of the tooth path 40 at the tooth output end in the current moving direction of the slider 3, that is, Figure 1 the forward direction shown (i.e., the K direction in the figure) suitable for a pair of teeth 2 to pass through and mesh when sliding out of the two-way slider 3, and at the same time, the width of the tooth path 40 at the current tooth input end can also be made suitable for a pair of non-meshed teeth 2 arranged side by side to pass through side by side and enter the two-way slider 3; the changing members (5a, 5b, 5c, 5d) arranged in this way enable the teeth entering the tooth path 40 to slide and mesh together. In the solution of the present invention, the tooth output end and the tooth input end need to be determined according to the relative moving direction of the two-way slider 3 and the teeth 2, that is, Figure 1 when the two-way slider 3 moves in the forward direction to the left (i.e., the K direction shown in the figure), the right end of the two-way slider 3 is the tooth output end, and the left end of the two-way slider 3 is the tooth output end; conversely, if the two-way slider 3 moves Figure 1 in the opposite right direction of the shown moving direction, the left end of the two-way slider 3 is changed to the tooth output end, and the right end of the two-way slider 3 is changed to the tooth output end.

[0034] The changing members (5a, 5b, 5c, 5d) can correspondingly manage the width of the tooth paths 40 at both ends in response to the moving direction of the two-way slider 3, which is beneficial to enabling the two-way slider 3 to mesh a pair of non-meshed teeth 2 together whether moving in the forward direction or the reverse direction, greatly improving the usability of the two-way slider 3. There are various specific implementation manners for the changing members (5a, 5b, 5c, 5d) to achieve this function. The following further illustrates the specific structure of the two-way slider 3 through three specific embodiments.

[0035] The first embodiment:

[0036] As Figures 2 to 5 shown, the base 4 includes a first plate body 41, a second plate body 42 located above the first plate body 41, and a central column 43 connecting the first plate body 41 and the second plate body 42. A tooth path 40 through which the teeth 2 can pass is formed between the first plate body 41 and the second plate body 42. As seen from a top view, as Figure 4As shown, the central column 43 is located like an island in the central area of the slider channel 40, dividing the central area of the slider channel 40 into a left slider channel 40a and a right slider channel 40b that allow the left and right sliders 2 of the zipper to pass through. Since the forward movement and the reverse movement of the two-way slider 3 only have opposite movement directions but the operating principles are the same, for the convenience of description, in this embodiment, the movement of the two-way slider 3 in the forward direction (such as the K direction marked in Figure 1 is taken as an example for illustration.

[0037] As Figure 2 shown, two strip-shaped changing members (5a, 5b) are swingably mounted on the second plate body 42. The left changing member 5a is arranged on the left side, and the right changing member 5b is arranged on the right side. A left swing shaft 53a is provided at the central position of the left changing member 5a. The left changing member 5a is swingably arranged on the second plate body 42 through the left swing shaft 53a and forms the left boundary of the slider channel. The two ends of the left changing member 5a respectively extend to the slider input end and the slider output end; a right swing shaft 53b is provided at the central position of the right changing member 5b. The two ends of the right changing member 5b respectively extend to the slider input end and the slider output end. The structures of the left changing member 5a and the right changing member 5b arranged symmetrically left and right are basically the same. The left changing member 5a is L-shaped and includes a horizontal left connecting plate 51a and a vertical left side plate 52a. A left swing shaft hole 510a is provided on the horizontal left connecting plate 51a. The left swing shaft 53a is connected to the horizontal left connecting plate 51a through the left swing shaft hole 510a. The vertical left side plate 52a forms the left boundary of the slider channel 40. Similarly, the right changing member 5b is also L-shaped and includes a horizontal right connecting plate 51b and a vertical right side plate 52b. A right swing shaft hole 510b is provided on the horizontal right connecting plate 51b. The right swing shaft 53b is connected to the horizontal right connecting plate 51b through the right swing shaft hole 510b. The vertical right side plate 52b forms the right boundary of the slider channel 40. Further, second left mounting holes 426a and second right mounting holes 426b are provided on the left and right sides of the second plate body 42. The left changing member 5a and the right changing member 5b are movably connected to the second left mounting hole 426a and the second right mounting hole 426b of the second plate body 42 through the left swing shaft 53a and the right swing shaft 53b. The left changing member 5a and the right changing member 5b swing correspondingly in response to the movement direction of the two-way slider 3 to manage the width of the slider channel 40 at both ends of the base 4.

[0038] In order to enable the left change member 5a and the right change member 5b to swing in response to the two-way slider 3, the two-way slider 3 further includes an actuator 6 movably disposed on the second plate body 42. The pull tab 9 is connected to the actuator 6. The actuator 6 can move correspondingly in the forward and reverse directions on the second plate body 42 in response to the driving force for driving the two-way slider 3 to move forward and backward. The actuator 6 includes a sliding block 61 and a connecting block 62 connected to the sliding block 61. A long slot 610 is provided on the sliding block 61, and a slide rail 45 matching the long slot 610 is provided on the second plate body 42. The sliding block 61 is slidably disposed on the slide rail 45 through the long slot 610. Further, a front limit block 451a and a rear limit block 451b are provided at both ends of the slide rail 45, and the actuator 6 can be well prevented from disengaging from the slide rail 45 by the front limit block 451a and the rear limit block 451b.

[0039] A further technical solution may also be that the actuator 6 is used to drive the left change member 5a and the right change member 5b to swing when it moves, so as to manage the width of the tooth path 40 at both ends of the base 4. Wherein, two left positioning posts extending upward are further provided on the horizontal left connecting plate 51a of the left change member 5a, namely a first left positioning post 54a and a second left positioning post 55a. The first left positioning post 54a and the second left positioning post 55a are respectively arranged on the front and rear sides of the left swing shaft 53a. Similarly, two right positioning posts extending upward are also provided on the horizontal right connecting plate 51b of the right change member 5b, namely a first right positioning post 54b and a second right positioning post 55b. The first right positioning post 54b and the second right positioning post 55b are respectively arranged on the front and rear sides of the right swing shaft 53b. Left wing edges 63a and right wing edges 63b extending to both sides are provided on the actuator 6. The left wing edges 63a and the right wing edges 63b are connected to the left and right sides of the sliding block 61. The left wing edge 63a is arranged between the first left positioning post 54a and the second left positioning post 55a, and the right wing edge 63b is arranged between the first right positioning post 54b and the second right positioning post 55b. When the actuator 6 moves, the left wing edge 63a can touch the first left positioning post 54a or the second left positioning post 55a and then push the left change member 5a to swing, and the right wing edge 63b can touch the first right positioning post 54b or the second right positioning post 55b and then push the right change member 5b to swing.

[0040] To engage a pair of chain teeth 2, it is necessary to change the width of the chain tooth channel 40 at the output end of the chain teeth to a width that allows a pair of engaged chain teeth 2 to just pass through. In order to control the swing angles of the left changer 5a and the right changer 5b, two left pits adapted to the two left positioning posts are provided on the left side of the second plate body 42, namely the first left pit 421a and the second left pit 422a. Two right pits adapted to the two right positioning posts are provided on the right side of the second plate body 42, namely the first right pit 421b and the second right pit 422b. When the left changer 5a and the right changer 5b swing from the wall on the side of the output end of the chain teeth towards the middle of the chain tooth channel 40, the second left positioning post 55a and the second right positioning post 55b can swing into the second left pit 422a and the second right pit 422b and combine to limit the maximum swing amplitude of the left changer 5a and the right changer 5b. When the left changer 5a and the right changer 5b swing in the reverse direction, the wall on the side of the input end of the chain teeth will swing towards the chain tooth channel 40, and the first left positioning post 54a and the first right positioning post 54b can swing into the first left pit 421a and the first right pit 421b and combine to limit the maximum swing amplitude of the left changer 5a and the right changer 5b during the reverse swing. By using the first left pit 421a, the first right pit 421b, the second left pit 422a and the second right pit 422b to limit the swing angles of the left changer 5a and the right changer 5b, the width of the chain tooth channel 40 at the output end of the chain teeth can be adjusted to allow a pair of non-engaged chain teeth 2 arranged side by side left and right to engage and slide out of the two-way slider 3.

[0041] A further technical solution may also be that, as Figure 5 shown, a left chain belt gap 401a is provided between the left side plate 52a and the first plate body 41, and a right chain belt gap 401b is provided between the right side plate 52b and the first plate body 41. By providing the left chain belt gap 401a and the right chain belt gap 401b, the webbing on a pair of chain belts 1 can pass through, so that the two-way slider 3 can move in the forward and reverse directions on a pair of chain belts.

[0042] A further technical solution may also be that the left and right sides of the second plate body 42 are in a sandwich structure, as Figure 2 and Figure 5As shown, the second plate body 42 includes a first layer wall body 423 and a second layer wall body 424 arranged up and down. The first layer wall body 423 and the second layer wall body 424 are arranged at intervals to form a left clamping groove and a right clamping groove on the left and right sides of the second plate body 42. The horizontal left connecting plate 51a is inserted into the left clamping groove, and the horizontal right connecting plate 51b is inserted into the right clamping groove. The second left mounting hole 426a and the second right mounting hole 426b of the second plate body 42 penetrate through the first layer wall body 423 and the second layer wall body 424. In this way, the horizontal left connecting plate 51a of the left changer 5a is swingably connected to the first layer wall body 423 and the second layer wall body 424 of the left clamping groove through the left swing shaft 53a, and the horizontal right connecting plate 51b of the right changer 5b is swingably connected to the first layer wall body 423 and the second layer wall body 424 of the right clamping groove through the right swing shaft 53b. This is beneficial to improving the connection strength between the left changer 5a, the right changer 5b and the second plate body 42, and the width of the chain tooth channel 40 defined by the left changer 5a and the right changer 5b is more stable.

[0043] A further technical solution may also be that a left mounting auxiliary hole 411a is provided on the left side wall body of the first plate body 41, and a right mounting auxiliary hole 411b is provided on the right side wall body of the first plate body 41. The left mounting auxiliary hole 411a and the right mounting auxiliary hole 411b correspond to the second left mounting hole 426a and the second right mounting hole 426b respectively. In this way, the installation fixture can extend below the second plate body 42 through the second left mounting hole 426a and the second right mounting hole 426b to provide auxiliary support for installing the left swing shaft 53a and the right swing shaft 53b, which is beneficial to improving the installation efficiency of the two-way slider 3.

[0044] A further technical solution may also be that upper stops 91 and lower stops 92 are respectively provided at both ends of the zipper. The upper stop 91 connects the left ends of a pair of the chain tapes 1 together, and the lower stop 92 connects the right ends of a pair of the chain tapes 1 together. The widths of the upper stop 91 and the lower stop 92 are not greater than the width of the chain tooth channel 40 at the chain tooth output end. Since the upper stop 91 and the lower stop 92 are fixed components and do not separate with the separation of a pair of the chain tapes 1, in this way, at least part of the upper stop 91 or the lower stop 92 can enter the chain tooth channel 40 of the two-way slider 3 when the two-way slider 3 moves to the leftmost or rightmost end. This is beneficial to enabling the left changer 5a or the right changer 5b to easily move to both sides of the upper stop 91 or the lower stop 92 when the two-way slider 3 moves in the reverse direction, so as to narrow the width of the chain tooth channel 40 at the chain tooth output end.

[0045] Taking the two-way slider 3 in the forward direction (such as Figure 1Taking the movement in the K direction marked as an example for illustration, the tab 9 pulls the actuator 6 under the drive of an external driving force. Due to the force, the actuator 6 can not only slide forward relative to the base 4 on the slide rail 45, but also drive the entire double-slider 3 to move forward along the chain teeth 2. During the forward movement of the left wing edge 63a on the actuator 6, it can touch the first left positioning post 54a on the left changer 5a and then push the wall body of the left changer 5a at the input end of the chain teeth to swing outward, and the wall body of the left changer 5a at the output end of the chain teeth will swing correspondingly toward the middle and partially extend into the chain tooth channel 40; while during the forward movement of the right wing edge 63b, it can touch the first right positioning post 54b on the right changer 5b and then push the wall body of the right changer 5b at the input end of the chain teeth to swing outward, and the wall body of the right changer 5b at the output end of the chain teeth will swing correspondingly toward the middle and partially extend into the chain tooth channel 40. As Figure 2 shown, when the second left positioning post 55a of the left changer 5a swings into and combines with the second left pit 422a, and the second right positioning post 55b of the right changer 5b swings into and combines with the second right pit 422b, the left changer 5a and the right changer 5b stop swinging; at this time, the left changer 5a and the right changer 5b define the chain tooth channel 40 at the output end of the chain teeth as an inverted V-shaped channel that gradually narrows along the moving direction of the chain teeth. In this state, the actuator 6 can further drive the base 4 to move forward together on the chain teeth 2. A pair of unmeshed chain teeth 2 can enter the double-slider 3 through the chain tooth channel 40 at the input end of the chain teeth and move along the inverted V-shaped channel toward the output end of the chain teeth. Since the width of the chain tooth channel 40 at the output end of the chain teeth narrows, a pair of unmeshed chain teeth 2 arranged side by side left and right can gradually converge and mesh together and then leave the output end of the chain teeth. When the double-slider 3 moves forward to the leftmost position of the chain belt 1 or the chain teeth 2, the upper stop 91 enters the chain tooth channel 40 and stops the double-slider 3. The double-slider 3 meshes and arranges all the chain teeth 2 in front of it, whether they are already opened or not. If there are opened chain teeth 2 behind it (i.e., in the reverse direction opposite to the forward direction) later, move the double-slider 3 in the reverse direction to the end position at the right end of the chain teeth 2. The method of meshing the chain teeth 2 during reverse movement is the same as the above forward meshing method, except that the input end and the output end of the chain teeth of the double-slider 3 are swapped due to the change in the moving direction of the double-slider 3.

[0046] The second embodiment:

[0047] As Figures 6 to 8As shown, the two-way slider 3 includes a base 4. The base 4 includes a first plate body 41, a second plate body 42 located above the first plate body 41, and a central cylinder 43 connecting the first plate body 41 and the second plate body 42. A slider passage 40 allowing the slider 2 to pass through is arranged between the first plate body 41 and the second plate body 42. The central cylinder 43 divides the central area of the slider passage 40 into a left slider passage 40a and a right slider passage 40b allowing the left and right sliders 2 of the zipper 1 to pass through respectively. A first left vertical side plate 418a and a first right vertical side plate 418b are respectively arranged on the left and right sides of the first plate body 41, and a second left vertical side plate 428a and a second right vertical side plate 428b are respectively arranged on the left and right sides of the second plate body 42. The first left vertical side plate 418a and the second left vertical side plate 428a, and the first right vertical side plate 418b and the second right vertical side plate 428b are respectively arranged opposite to each other but do not completely enclose the left and right sides of the space between the first plate body 41 and the second plate body 42, but leave a slider gap allowing the slider tape 1 to pass through; the first left vertical side plate 418a, the first right vertical side plate 418b, the second left vertical side plate 428a, and the second right vertical side plate 428b are used to prevent the slider 2 entering the slider passage 40 from disengaging in the left and right directions. Since the forward movement and the reverse movement of the two-way slider 3 are only opposite in movement direction and the action principle is the same, for the convenience of description, in this embodiment, the forward movement of the two-way slider 3 (such as Figure 1 the K direction marked in

[0048] As Figure 6As shown, the bidirectional slider 3 also includes two changing parts (5c, 5d) disposed at the two ends of the central column 43, which are respectively the front changing part 5c disposed at the front tooth input end of the central column 43 and the rear changing part 5d disposed at the rear tooth output end of the central column 43, so that the front changing part 5c and the rear changing part 5d can manage the width of the tooth channel 40 at the two end positions. The front changing part 5c and the rear changing part 5d have the same structure but are placed in opposite directions. The front changing part 5c in the shape of a saddle horse includes a front left side wall 51c, a front right side wall 52c and a front transverse wall 53c connected between the front left side wall 51c and the front right side wall 52c, and the front left side wall 51c and the front right side wall 52c are arranged in an eight-shaped shape to form an eight-shaped groove, and the rear changing part 5d includes a rear left side wall 51d, a rear right side wall 52d and a rear transverse wall 53d, and the rear left side wall 51d and the rear right side wall 52d are also arranged in an eight-shaped shape. A front left through hole 425c and a front right through hole 426c are provided on the wall of the second plate body 42 located on the side of the chain tooth input end, and a rear left through hole 425d and a rear right through hole 426d are provided on the wall located on the side of the chain tooth output end. The front change member 5c rides on the side of the chain tooth input end of the second plate body 42, and the rear change member 5d rides on the side of the chain tooth output end of the second plate body 42. Taking the front change member 5c located on the side of the chain tooth input end as an example, the change member (5c, 5d) that can move up and down has two states. The first state is that the front left side wall 51c and the front right side wall 52c can pass through the front left through hole 425c and the front right through hole 426d on the second plate body 42. 426c extends into the chain tooth channel 40 to change the chain tooth channel 40 at this end into an eight-shaped groove, through which a pair of chain teeth 2 that are not engaged but arranged side by side on the left and right can be guided to gradually gather and engage; the second state is that the front left side wall 51c and the front right side wall 52c can be partially inserted into the front left through hole 425c and the front right through hole 426c on the second plate body 42 and a height is left between the lower surfaces of the front left side wall 51c and the front right side wall 52c and the first plate body 41 for the chain teeth to pass through, and at the same time, the chain tooth channel 40 at the chain tooth input end has a wider width, which is conducive to allowing a pair of chain teeth 2 that are not engaged but arranged side by side on the left and right to enter the two-way slider 3.

[0049] A further technical solution may also be that a front concave pit 420a is provided at the tooth input end of the second plate body 42, and a rear concave pit 420b is provided at the tooth output end of the second plate body 42. The front changing member 5c is arranged in the front concave pit 420a, and the front changing member 5d is arranged in the rear concave pit 420b. Since the structures of the two concave pits are the same except for the opposite orientations, the front concave pit 420a includes a front bottom wall 421c, and front left through holes 425c and front right through holes 426c are arranged on the front bottom wall 421c. The front changing member 5c straddles the front bottom wall 421c of the front concave pit 420a, and the front left side wall 51c and the front right side wall 52c can pass through the front bottom wall 421c of the front concave pit 420a and extend into the tooth channel 40 to manage the width of the tooth channel 40. Similarly, the rear concave pit 420b includes a rear bottom wall 421d, and the rear left side wall 51d and the rear right side wall 52d of the rear changing member 5d can pass through the rear left through holes 425d and the rear right through holes 426d arranged on the rear bottom wall 421d and extend into the tooth channel 40.

[0050] A further technical solution may also be that the two-way slider 3 further includes an actuating member 6 movably arranged on the second plate body 42. The actuating member 6 includes a connecting block 62, and a front slider 61a and a rear slider 61b respectively arranged at the front and rear ends of the connecting block 62. Front long slots 610a and rear long slots 610b are respectively arranged on the front slider 61a and the rear slider 61b. Front positioning posts 45a and rear positioning posts 45b are respectively arranged at both ends of the second plate body 42. The actuating member 6 is sleeved on the front positioning posts 45a and the rear positioning posts 45b through the front long slots 610a and the rear long slots 610b and can move in the forward and reverse directions under the guidance of the front positioning posts 45a and the rear positioning posts 45b. Further, a front limiting block 46a is arranged on the front positioning post 45a, and a rear limiting block 46b is arranged on the rear positioning post 45b. The front limiting block 46a and the rear limiting block 46b can well prevent the actuating member 6 from coming off and limit the maximum moving stroke of the actuating member 6.

[0051] A further technical solution may also be that by moving the actuator 6, it is also possible to affect the movement of the front changing member 5c and the rear changing member 5d, so that the front changing member 5c and the rear changing member 5d manage the widths of both ends of the tooth channel 40. The lower end surface of the front slider 61a has a sloped first front pressing working surface 63c, the lower end surface of the rear slider 61b has a sloped first rear pressing working surface 63d, and the first front pressing working surface 63c and the first rear pressing working surface 63d are arranged axially facing each other. Further, a sloped second front pressing working surface 54c is provided on the top end surface of the front changing member 5c, and a sloped second rear pressing working surface 54d is provided on the top end surface of the rear changing member 5d. In this way, the actuator 6 can push the front changing member 5c downward by means of the first front pressing working surface 63c and the second front pressing working surface 54c, or push the rear changing member 5d downward by means of the first rear pressing working surface 63d and the second rear pressing working surface 54d.

[0052] A further technical solution may also be that, as Figure 10 shown, upper stops 91 and lower stops 92 are respectively provided at both ends of the zipper. The upper stops 91 connect the left ends of a pair of the tape strips 1 together, and the lower stops 92 connect the right ends of a pair of the tape strips 1 together. The widths of the upper stops 91 and the lower stops 92 are not greater than the width of the tooth channel 40 at the tooth output end. Since the upper stops 91 and the lower stops 92 are fixed components and do not separate with the separation of a pair of the tape strips 1, in this way, when the two-way slider 3 moves to the leftmost or rightmost end, at least part of the upper stops 91 or the lower stops 92 can enter the tooth channel 40 of the two-way slider. This is beneficial for the two-way slider 3 to move in the reverse direction, so that the left changing member 5a or the right changing member 5b can easily move to both sides of the upper stops 91 or the lower stops 92, thereby narrowing the width of the tooth channel 40 at the tooth output end.

[0053] Taking the two-way slider 3 moving in the forward direction (such as Figure 1Taking the movement in the K direction indicated in the figure as an example for illustration, under the driving action of an external driving force, the tab 9 drives the actuator 6 to first slide in the forward direction relative to the base 4 on the front positioning post 45c and the rear positioning post 45d. At the tooth output end of the base 4, when the first rear pressing working surface 63d moves in the forward direction, it touches the second rear pressing working surface 54d and pushes the rear changing member 5d downward into the tooth channel 40, so that the tooth channel 40 at the tooth output end is changed into an eight-shaped channel and remains in this state; while at the tooth input end of the base 4, the first front pressing working surface 63c moves in the forward direction away from the second front pressing working surface 54c, and vacates an upper space above that does not hinder the upward movement of the front changing member 5c. When the actuator 6 moves forward to combine with the front limit block 46a, the actuator 6 drives the base 4 to move forward together on the teeth 2. In this way, when a pair of unmeshed and arranged side-by-side teeth 2 enter the tooth channel 40 from the tooth input end, the teeth 2 can squeeze the front left side wall 51c and the front right side wall 52c upward, so that the front changing member 5c moves upward, and the tooth channel 40 at the tooth input end is restored from the eight-shaped channel to a wider original state, so that the unmeshed teeth 2 can enter conveniently; the unmeshed teeth 2 continue to move to the eight-shaped channel at the tooth output end, mesh together and then leave the double-sided slider 3. When the double-sided slider 3 travels in the forward direction to the leftmost position of the chain belt 1 or the teeth 2, the upper stop 91 enters the tooth channel 40 and stops the double-sided slider 3, and the double-sided slider 3 meshes and arranges all the teeth 2 located directly in front of it, whether they are already opened or not. If there are opened teeth 2 behind it (i.e., in the reverse direction opposite to the forward direction) afterwards, move the double-sided slider 3 in the reverse direction to the end position at the right end of the teeth 2. The meshing method of the teeth 2 during reverse movement is the same as the above forward meshing method, and the difference is that the tooth input end and the tooth output end of the double-sided slider 3 are swapped due to the change in the moving direction of the double-sided slider 3.

[0054] The third embodiment:

[0055] As Figure 9As shown, this embodiment is a further improvement based on the second embodiment. The base 4 includes a first plate body 41, a second plate body 42 located above the first plate body 41, and a central column body (not shown in the figure as it is blocked by the second plate body) connecting the first plate body 41 and the second plate body 42. A tooth channel 40 allowing the teeth 2 to pass through is arranged between the first plate body 41 and the second plate body 42. Second left vertical side plates 428a and second right vertical side plates 428b are respectively provided on the left and right sides of the second plate body 42. The second left vertical side plates 428a and the second right vertical side plates 428b do not completely enclose the left and right sides of the space between the first plate body 41 and the second plate body 42 but leave a belt gap allowing the belt 2 to pass through. The second left vertical side plates 428a and the second right vertical side plates 428b are used to prevent the teeth 2 entering the tooth channel 40 from escaping in the left and right directions. The movable arrangement of the two saddle-shaped front changing members 5c and rear changing members 5d is the same as that of the second embodiment.

[0056] However, different from the structure of the second embodiment, the two-way slider 3 further includes a left pressing strip 7a and a right pressing strip 7b respectively connected to the left and right sides of the second plate body 42. The left pressing strip 7a and the right pressing strip 7b are located above the front changing member 5c and the rear changing member 5d. A pressing spring 8 is arranged between the left pressing strip 7a, the right pressing strip 7b and the front changing member 5c, the rear changing member 5d. The pressing spring 8 can provide a spring force for the front changing member 5c and the rear changing member 5d to move towards the tooth channel 40. However, if an opposite force is provided below the front changing member 5c and the rear changing member 5d and overcomes the spring force of the pressing spring 8, the front changing member 5c and the rear changing member 5d can be moved in a direction away from the tooth channel 40.

[0057] A further technical solution can also be that the two-way slider 3 further includes an actuating member 6 movably arranged on the second plate body 42. Longitudinal slots 610a and rear longitudinal slots ( Figure 9(not shown in the figure), the two ends of the second plate body 42 are respectively provided with a front positioning post 45a and a rear positioning post 45b. A front limiting block 46a is arranged on the front positioning post 45a, and a rear limiting block 46b is arranged on the rear positioning post 45b. The actuating member 6 is sleeved on the front positioning post 45a and the rear positioning post 45b through the front long slot 610a and the rear long slot and can move in the forward and reverse directions under the guidance of the front positioning post 45. Front sliding blocks 61a and rear sliding blocks 61b are respectively arranged at the front and rear ends of the actuating member 6. The lower end surface of the front sliding block 61a has a first front pressing working surface 65a in a slope shape, and the lower end surface of the rear sliding block 61b has a first rear pressing working surface 65b in a slope shape. The first front pressing working surface 65a and the first rear pressing working surface 65b are arranged axially facing each other. In this way, the actuating member 6 can push the front changing member 5c and the rear changing member 5d to move downward by means of the first front pressing working surface 65a and the first rear pressing working surface 65b.

[0058] Using the two-way slider 3 in the forward direction (such as Figure 1Taking the movement in the K direction marked as an example for illustration, the tab 9 drives the actuator 6 to slide forward relative to the base 4 on the front positioning post 45a and the rear positioning post 45b under the drive of an external driving force. At the tooth output end of the base 4, the first rear pressing working surface 65b touches the rear transverse wall 53d of the rear changing member 5d during the forward movement, and under the combined action of the actuator 6 and the pressing spring 8, the rear changing member 5d moves downward into the tooth channel 40, so that the tooth channel 40 at the tooth output end is changed into an eight-shaped channel and remains in this state; while at the tooth input end of the base 4, the first front pressing working surface 65a moves forward away from the front transverse wall 53c of the front changing member 5c and vacates an upper space above the front changing member 5c that does not hinder the upward movement of the front changing member 5c, but at this time it still remains in the tooth channel 40 under the action of the pressing spring 8. When the actuator 6 moves forward to combine with the front limiting block 46a, the actuator 6 drives the base 4 to move forward together on the teeth 2. In this way, when a pair of unmeshed and arranged side-by-side teeth 2 enter the two-way slider 3 from the tooth channel 40 at the tooth input end, the teeth 2 can squeeze the front left wall 51c and the front right wall 52c upward, and after overcoming the downward acting force of the pressing spring 8, the front changing member 5c can be moved upward, and the tooth channel 40 at the tooth input end is restored from the eight-shaped channel to a wider original state, so that the unmeshed teeth 2 can enter conveniently. And under the action of the pressing spring 8, the front changing member 5c is lightly pressed on the teeth 2, but this does not affect the movement of the teeth 2. Instead, it can control the movement gap between the teeth 4 and the second plate body 42 to make the movement of the teeth more stable; the unmeshed teeth 2 continue to move towards the eight-shaped channel at the tooth output end and mesh together and leave the two-way slider 3. When the two-way slider 3 travels forward to the leftmost position of the chain belt 1 or the teeth 2, the upper stop 91 enters the tooth channel 40 and stops the two-way slider 3, and the two-way slider 3 meshes and arranges all the teeth 2 located directly in front of it, whether they are already opened or not. If there are opened teeth 2 behind it (i.e., in the reverse direction opposite to the forward direction) afterwards, the two-way slider 3 is moved backward to the end position at the right end of the teeth 2. The meshing method of the teeth 2 during the backward movement is the same as the above forward meshing method, and the difference is that the tooth input end and the tooth output end of the two-way slider 3 are swapped due to the change in the movement direction of the two-way slider 3.

Claims

1. A two-way slider for a two-way meshing zipper, which is used to mesh the teeth opened on both sides of the two-way slider; characterized in that, The two-way slider includes a base and a changing member movably mounted on the base. A slider path for slider teeth to pass through is formed based on the base. The changing member is used to manage the widths of the slider paths at at least two ends of the base respectively. Among them, based on the slider teeth output end and the slider teeth input end determined by the current moving direction of the two-way slider, the changing member can make the width of the slider path at the current slider teeth output end suitable for a pair of slider teeth to mesh and slide out of the two-way slider when passing through, and at the same time can make the width of the slider path at the current slider teeth input end suitable for a pair of unmeshed slider teeth arranged side by side left and right to pass through side by side and enter the two-way slider; Based on the slider teeth output end and the slider teeth input end determined by the current moving direction of the two-way slider, the changing member constructs the slider path at the slider teeth output end as an inverted V-shaped channel that gradually narrows along the moving direction of the slider teeth. The inverted V-shaped channel can guide a pair of unmeshed slider teeth arranged side by side left and right to gradually converge and mesh; the changing member is in a strip shape or in a pommel horse shape, Among them, the changing member is in a strip shape and a swing shaft is arranged at the central position of the changing member. The two changing members are respectively swingably arranged on the left and right sides of the base through their swing shafts. The two changing members respectively extend to the two ends of the base. The two changing members swing in response to the movement of the two-way slider and change the slider path at the slider teeth output end into an inverted V-shaped channel, and at the same time change the slider path at the slider teeth input end into a path that allows a pair of unmeshed slider teeth arranged side by side left and right to pass through side by side and enter the two-way slider; Among them, the changing member is in a pommel horse shape and has left and right side walls, and the left and right side walls construct the inverted V-shaped channel; the two changing members are respectively arranged at the two ends of the base and are movably arranged on the base in the up and down direction. Based on the slider teeth output end and the slider teeth input end determined by the current moving direction of the two-way slider, the changing member at the slider teeth output end extends into the slider path in response to the movement of the two-way slider so as to be able to construct the slider path at the slider teeth output end as an inverted V-shaped channel, and the changing member at the slider teeth input end moves upward to avoid the slider teeth in response to the movement of the two-way slider so as to change the slider path at the slider teeth input end into a path that allows a pair of unmeshed slider teeth arranged side by side left and right to pass through side by side and enter the two-way slider.

2. The two-way slider according to claim 1, wherein It further includes an actuating member movably arranged on the base. The actuating member can correspondingly move on the base in response to the driving force for driving the two-way slider to move forward and backward. The changing member manages the width of the slider path in response to the movement of the actuating member.

3. The two-way slider according to claim 2, characterized in that, The base includes a first plate body, a second plate body located above the first plate body, and a central column connecting the first plate body and the second plate body. The slider path is arranged between the first plate body and the second plate body. The central column divides the central area of the slider path into a left slider path and a right slider path that allow the left and right slider teeth of the zipper to pass through. The actuating member is slidably arranged on the second plate body.

4. A zipper, comprising a pair of chain tapes, with teeth provided on the inner sides of the pair of chain tapes respectively; characterized in that, A two-way slider as claimed in any one of claims 1 to 3 is slidably provided on a pair of said teeth; all the teeth on the inner sides of a pair of said tapes include a quick-release tooth area, and the meshing force of the teeth in the quick-release tooth area is suitable for being opened without the aid of the two-way slider, and the two-way slider is used to mesh the opened teeth on any one of its two sides.

5. The zipper according to claim 4, wherein Upper stops and lower stops are respectively provided at both ends of the zipper. The upper stop connects the left ends of a pair of said tapes together, and the lower stop connects the right ends of a pair of said tapes together. The widths of the upper stop and the lower stop are not greater than the width of the tooth channel at the tooth output end. When the two-way slider moves to the leftmost or rightmost end, at least part of the upper stop or the lower stop can enter the tooth channel of the two-way slider.

Images