Imitation switch-type two-way zipper head and zipper

Abstract

Imitation switch-type two-way zipper head and zipper, including a base arranged to extend axially, including two changing members disposed in front of and behind the central cylinder. The changing members are in the shape of a pommel horse and include a left side wall, a right side wall, and a transverse wall connecting between the left side wall and the right side wall. The two changing members are movably arranged on the second plate body so that the left side wall and the right side wall of the changing members can extend into the tooth channel to respectively manage the width of the tooth channel at both ends of the base; the two changing members are respectively arranged at both ends of the tooth channel, and the two changing members can move respectively, so that the width of the tooth channel at the tooth input end and the tooth output end of the zipper head can be managed by controlling the up and down movement positions of the changing members, which can achieve that the width of the tooth channel at the tooth input end of the zipper head is wider and the width at the tooth output end is narrowed.

Description

Technical Field

[0001] The present invention relates to the technical field of zippers, and particularly relates to an imitation switch-type two-way zipper head and a zipper applying the zipper head. Background Art

[0002] A zipper is a commonly used accessory on fabrics. Generally, a zipper makes the teeth on a pair of chain tapes engage or separate by moving a slider. However, the slider on a traditional zipper can generally only achieve that when pulled in one direction, a pair of chain tapes can be zipped up, and when pulled in the opposite direction, a pair of engaged chain tapes are separated. Such a traditional zipper has a relatively single function. The applicant's earlier Chinese utility model patent with the patent number CN203168188U and the invention name "A fabric item capable of being quickly taken off" discloses a quick-release zipper. The quick-release zipper includes a pair of chain tapes and a slider. By providing a tooth-removing area at the middle section of the pair of chain tapes, the pair of chain tapes can be directly opened from the tooth-removing area without using the slider. Although using the slider can make the pair of separated chain tapes engage together, after completely opening the pair of chain tapes of the quick-release zipper each time, it is necessary to re-zip them in one direction from start to end, which brings certain inconvenience to users. There is an urgent need to invent a new slider to improve the usability of the quick-release zipper. Summary of the Invention

[0003] In order to enable the teeth of the quick-release zipper to be quickly re-engaged together through the slider after separation, the present invention provides a switch-like two-way slider. The slider includes a base extending axially. The base includes a first plate body, a second plate body located above the first plate body, and a central cylinder connecting the first plate body and the second plate body. A tooth channel allowing the teeth to pass through is arranged between the first plate body and the second plate body. The central cylinder divides the central area of the tooth channel into a left tooth channel and a right tooth channel allowing the left and right teeth of the zipper to pass through respectively. Vertical side plates are respectively arranged on the left and right sides of the first plate body and / or the second plate body. The vertical side plates do not completely enclose the left and right sides of the space between the first plate body and the second plate body but leave a belt gap allowing the tape to pass through. The vertical side plates are used to prevent the teeth entering the tooth channel from escaping in the left and right directions. It is characterized in that the slider further includes two changing members respectively arranged in front of and behind the central cylinder. The changing member is in the shape of a pommel horse and includes a left side wall, a right side wall, and a transverse wall connecting the left side wall and the right side wall. The two changing members are movably arranged on the second plate body in the up and down direction so that the left side wall and the right side wall of the changing member can extend into the tooth channel to respectively manage the widths of the tooth channels at both ends of the base. Among them, based on the tooth output end and the tooth input end determined by the current moving direction of the slider, the changing member located at the tooth output end extends into the tooth channel in response to the movement of the slider so that the width of the tooth channel at the current tooth output end is suitable for allowing a pair of teeth to pass through and mesh and slide out of the slider. The changing member located at the tooth input end moves upward to avoid the teeth in response to the movement of the slider so that the tooth channel at the tooth input end is changed to be able to allow a pair of unmeshed and left-right arranged teeth to pass side by side into the slider.

[0004] Among them, vertical side plates are respectively arranged on the left and right sides of the first plate body or / and the second plate body. The vertical side plates are arranged in the middle of the left and right sides of the central cylinder or extend forward and backward from the middle. The vertical side plates are used to define the left and right sides of the tooth channel, which are the leftmost side of the left tooth channel and the rightmost side of the right tooth channel. By arranging the vertical side plates, it is possible to prevent the teeth from escaping when passing through the left tooth channel and the right tooth channel. At the same time, it can also form a longer tooth channel with side plates in combination with the changing member extending into the tooth channel mentioned later, which is beneficial to guiding the movement of the teeth. The vertical side plates specifically include the following three setting methods. The first method is to respectively arrange vertical side plates on the left and right sides of both the first plate body and the second plate body. The second method is to only arrange vertical side plates on the left and right sides of the first plate body. The third method is to respectively arrange vertical side plates on the left and right sides of the second plate body.

[0005] Among them, the two changing members are arranged on the second plate body so as to be movable up and down, enabling the left side wall and the right side wall of the changing member to extend into the chain tooth channel, thereby respectively managing the widths of the chain tooth channels at both ends of the base. This includes the following two aspects. First, by providing the two changing members, it is possible to manage the chain tooth channels at two positions, namely the chain tooth channels at the chain tooth input end and the chain tooth output end. Second, the management of the widths of the chain tooth channels at both ends of the base includes at least two situations. The first is that the left side wall and the right side wall of the changing member do not completely extend into the chain tooth channel. At this time, the height and width of the chain tooth channel are both sufficient for a pair of unmeshed chain belts to pass through. The second is that the left side wall and the right side wall of the changing member extend into the chain tooth channel, and the width of the chain tooth channel in this section is narrowed, thereby enabling a pair of unmeshed chain teeth to mesh together.

[0006] Among them, the chain tooth output end and the chain tooth input end determined based on the current moving direction of the slider refer to that the chain tooth output end and the chain tooth input end can be changed, and they are determined according to the relative moving direction of the slider and the chain teeth; that is, when the moving direction of the slider is switched, the chain tooth channel at the end where the original chain teeth enter will become the chain tooth channel at the chain tooth output end, and the chain tooth channel at the original chain tooth output end will become the chain tooth channel at the end where the chain teeth enter.

[0007] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are as follows: First, the two changing members are respectively arranged at both ends of the chain tooth channel, and the two changing members can move respectively, so that the widths of the chain tooth channels at the chain tooth input end and the chain tooth output end can be managed by controlling the up and down moving positions of the changing members, which can achieve a wider width of the chain tooth channel at the chain tooth input end of the slider and a narrower width at the chain tooth output end. Second, by changing the width of the chain tooth channel through the left side wall and the right side wall of the changing member, the left side wall and the right side wall have a simple structure, are easy to process, and have high processing accuracy. Then, by connecting with the transverse wall, the structural strength of the changing member is improved, which is beneficial to ensuring that the chain teeth can smoothly pass through the narrowed chain tooth channel and the changing member has sufficient strength to enable the chain teeth to mesh. Third, the chain tooth output end and the chain tooth input end are determined based on the current moving direction of the slider, and at the same time, the up and down movement of the two changing members changes in response to the movement of the slider. In this way, by controlling the downward movement of the changing member at the chain tooth output end and the upward movement of the changing member at the chain tooth input end, it can be achieved that the slider can combine a pair of unmeshed chain belts together regardless of whether it moves in the forward or reverse direction, greatly improving the use convenience of the slider. Fourth, the vertical side plates provided on the first plate body or / and the second plate body and the changing members extending into the chain tooth channel form a chain tooth channel with side plates, which is beneficial to guiding the movement of the chain teeth.

[0008] A further technical solution may also be that the left side wall and the right side wall are arranged in a V-shaped pattern to form a V-shaped channel. Based on the tooth output end and the tooth input end of the zipper teeth determined by the current moving direction of the slider, when the left side wall and the right side wall of the changing member located at the tooth output end extend into the tooth channel, the V-shaped channel can guide a pair of unmeshed teeth arranged side by side left and right to gradually converge and mesh. Wherein, the V-shaped channel is a channel space defined by the left side wall and the right side wall of the changing member. In particular, when the left side wall and the right side wall of the changing member extend into the tooth channel, the V-shaped channel is exactly formed in the tooth channel at the tooth output end, thereby narrowing the width of this section of the tooth channel and enabling the teeth to mesh. The changing member thus arranged is not only simple in structure but also convenient to implement.

[0009] A further technical solution may also be that the changing member straddles the second plate body, and the left side wall and the right side wall can extend through the second plate body into the tooth channel. Wherein, the implementation form of the left side wall and the right side wall passing through the second plate body can be that through holes are provided on the second plate body to allow the left side wall and the right side wall to pass through, or grooves can be provided on the left and right sides of the second plate body to allow the left side wall and the right side wall to pass through; in this way, the second plate body not only provides support for the changing member but also can provide side positioning when the left side wall and the right side wall move up and down, which is beneficial for the changing member to move up and down stably.

[0010] A further technical solution may also be that pits are respectively arranged at both ends of the second plate body, and one changing member is arranged in one pit. The changing member straddles the bottom wall of the pit, and the left side wall and the right side wall can extend through the bottom wall of the pit into the tooth channel. By providing the pits, not only space for the changing member to move is provided, but the side walls of the pits can also provide side positioning for the changing member, which is more beneficial for the changing member to move up and down stably.

[0011] A further technical solution may also be that a pressing strip connected to the second plate body is further included. The pressing strip is located above the changing member, and a top compression spring is arranged between the pressing strip and the changing member. Under the extrusion of the top compression spring, the changing member has a tendency to keep moving towards the tooth channel; on the other hand, when a pair of unmeshed teeth pass through the tooth channel, the lower surface of the changing member presses on the teeth under the action of the top compression spring, which is beneficial for the teeth to pass through stably.

[0012] A further technical solution may also be that it further includes an actuating member movably disposed on the second plate body. The actuating member can correspondingly move on the second plate body in response to the driving force for driving the slider to move forward and backward. The actuating member is used to drive the changing member at the output end of the chain teeth to move into the chain tooth channel when it moves, so that a pair of chain teeth can be engaged and pass through, and is also used to create an upper space above the changing member at the input end of the chain teeth that does not hinder the upward movement of the changing member, so that even a pair of chain teeth arranged side by side without engagement can enter the chain tooth channel after the changing member moves upward.

[0013] Among them, the actuating member can correspondingly move on the second plate body in response to the driving force for driving the slider to move forward and backward, which means that when the external driving force drives the slider to move, the external driving force can also drive the actuating member to move on the second plate body. The moving direction and manner of the actuating member are diverse. It can be a movement in the same direction as the movement of the slider, or it can be a swing or rotation. However, its purpose is to drive the changing member to move by the movement of the actuating member to realize that the changing member extends into the chain tooth channel or creates space for the upward movement of the changing member.

[0014] Among them, the actuating member creates an upper space above the changing member at the input end of the chain teeth that does not hinder the upward movement of the changing member. On the one hand, it means that after the actuating member moves, an avoidance space is formed above the changing member at the input end of the chain teeth, so that the changing member can move up and down. On the other hand, it means that the changing member at the input end of the chain teeth can be lifted under the pressing action of the entering chain teeth, so that the chain tooth channel at this end can be changed to allow a pair of unengaged chain teeth to pass side by side. In this way, by moving the actuating member to control the movement of the changing members at both ends, it is beneficial to ensure that a pair of unengaged chain teeth can enter the slider when the slider moves in different directions.

[0015] A further technical solution may also be that the lower end surfaces at both ends of the actuating member have first pressing working surfaces in a slope shape, and the actuating member pushes the changing member to move downward by means of the first pressing working surfaces. In this way, under the guiding action of the first pressing working surfaces, the actuating member can smoothly push the changing member to move.

[0016] A further technical solution may also be that the top end surface of the changing member is provided with second pressing working surfaces in a slope shape, and the actuating member pushes the changing member to move downward by means of the second pressing working surfaces. In this way, under the guiding action of the second pressing working surfaces, the actuating member can smoothly push the changing member to move.

[0017] A further technical solution may also be that long slots are provided at both ends of the actuating member, positioning posts are respectively provided at both ends of the second plate body, and the actuating member is sleeved on the positioning posts through the long slots at both ends thereof and can move in the forward and reverse directions under the guidance of the positioning posts. In this way, with the cooperation of the positioning posts and the long slots, the smoothness of the sliding of the actuating member is greatly improved, which is more conducive to enabling the actuating member to smoothly move to the defined position so as to drive the changing member to move.

[0018] Due to the above advantages of the zipper head, it can be applied to a zipper. The zipper includes a pair of chain tapes, and chain teeth are respectively provided on the inner sides of the pair of chain tapes; characterized in that, the zipper head is slidably provided on the pair of chain teeth; all the chain teeth on the inner sides of the pair of chain tapes include a quick-release chain tooth area, and the meshing force of the chain teeth in the quick-release chain tooth area is suitable for being opened without the aid of the zipper head, and the zipper head is used to mesh the already opened chain teeth on any one of its two sides, which greatly improves the convenience of use of the zipper.

[0019] A further technical solution may also be that upper stops and lower stops are respectively provided at both ends of the zipper. The upper stop connects the left ends of the pair of chain tapes together, and the lower stop connects the right ends of the pair of chain tapes together. The widths of the upper stop and the lower stop are not greater than the width of the chain tooth channel at the output end of the chain teeth. When the zipper head moves to the leftmost or rightmost end, at least part of the upper stop or the lower stop can enter the chain tooth channel of the zipper head. In this way, when the zipper head moves to the left or right end of the zipper, the upper stop or the lower stop can make the zipper head stop moving; if at this time the zipper head is made to move in the reverse direction under the reverse acting force, whether the pair of chain tapes are opened or not, the widths of the upper stop and the lower stop 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 stop or the lower stop so as to narrow the width of the chain tooth channel at the output end of the chain teeth, and enable the zipper head to mesh the chain teeth on the pair of chain tapes together when moving in the reverse direction.

[0020] Due to the above characteristics and advantages of the present invention, it can be applied to a zipper with an imitation switch-type two-way zipper head. Description of the Drawings

[0021] Figure 1 is a front view structural schematic diagram of the zipper applying the zipper head;

[0022] Figure 2 is an axonometric view structural schematic diagram of the first embodiment of the imitation switch-type two-way zipper head;

[0023] Figure 3is an exploded structural schematic diagram of the first embodiment of the imitation switch-type two-way zipper head;

[0024] Figure 4 is a front-view sectional structural schematic diagram of the first embodiment of the imitation switch-type two-way zipper head;

[0025] Figure 5 is Figure 4 the sectional structural schematic diagram in the C-C direction in;

[0026] Figure 6 is an exploded structural schematic diagram of the second embodiment of the imitation switch-type two-way zipper head;

[0027] Figure 7 the front-view structural schematic diagram of the zipper described, showing the state when the zipper head is located at the leftmost end;

[0028] Figure 8 is Figure 7 the sectional structural schematic diagram in the D-D direction in. Specific implementation manner

[0029] The following further describes the imitation switch-type two-way zipper head applying the technical solution of the present invention and the zipper applying the zipper head in conjunction with the accompanying drawings.

[0030] As Figure 1 shown, the two-way meshing zipper includes a pair of chain tapes 1 arranged left and right, and chain teeth 2 are respectively arranged axially on the inner sides of the pair of chain tapes 1. Among all the chain teeth 2 on the inner sides of the pair of chain tapes 1, there are included 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 chain teeth in 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 the zipper head, so that all the meshed chain teeth 2 can be opened along the chain teeth 2 that have been opened in the quick-release chain tooth area 21, which is very convenient to use.

[0031] In order to enable the opened chain teeth 2 to mesh together again, as Figures 1 to 5As shown, a slider 3 is further provided on a pair of the chain belts 1. A pull tab 9 is provided on the slider 3. By pulling the pull tab 9, the slider 3 can slide axially in a forward or reverse direction on the teeth 2. The slider 3 is used to receive the opened teeth 2 at either end thereof and engage them to connect a pair of the chain belts 1 together. The slider 3 includes a base 4 extending axially. A tooth channel 40 for allowing the teeth 2 to pass through is constructed based on the base 4. The base 4 or the tooth channel 40 includes two ends. One is a tooth input end, which is the front part of the tooth channel 40. The teeth 2 enter the slider 3 through the tooth input end. The other is a tooth output end, which is the rear part of the tooth channel 40. The teeth 2 leave the slider 3 through the tooth output end. In the solution of the present invention, the tooth output end and the tooth input end need to be determined according to the relative movement direction of the slider 3 and the teeth 2, that is Figure 1 when the slider 3 moves in the forward direction to the left (i.e., the K direction shown in the figure), the right end of the slider 3 is the tooth output end, and the left end of the slider 3 is the tooth input end; conversely, if the slider 3 moves Figure 1 in the opposite rightward direction of the shown movement direction, the left end of the slider 3 is changed to the tooth output end, and the right end of the slider 3 is changed to the tooth output end.

[0032] The slider 3 further includes changing members (5a, 5b) movably mounted on the base 4. The changing members (5a, 5b) can correspondingly manage the widths of the tooth channels 40 at both ends in response to the movement direction of the slider 3. This helps the slider 3 to engage a pair of unmeshed teeth 2 together whether it moves in the forward direction or the reverse direction, greatly improving the usability of the slider 3. The specific implementation manner for the changing members (5a, 5b) to achieve this function is diverse. The following further illustrates the specific structure of the floating slider 3 through two specific embodiments.

[0033] The first embodiment:

[0034] As Figures 1 to 5As 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 cylinder 43 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. The central cylinder 43 divides the central area of the tooth channel 40 into a left tooth channel 40a and a right tooth channel 40b allowing the left and right teeth 2 of the zipper 1 to pass through respectively. On the left and right sides of the first plate body 41, a first left vertical side plate 418a and a first right vertical side plate 418b are respectively provided. On the left and right sides of the second plate body 42, a second left vertical side plate 428a and a second right vertical side plate 428b are respectively provided. 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 tape gap allowing the 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 teeth 2 entering the tooth channel 40 from escaping in the left and right directions. Since the forward movement and the reverse movement of the slider 3 are only opposite in movement direction but the operating principle is the same, for the convenience of description, in this embodiment, the movement of the slider 3 in the forward direction (such as Figure 1 the K direction marked in

[0035] is taken as an example for description. Figure 3As shown, the zipper head 3 also includes two change members (5a, 5b) disposed at both ends of the central column 43, which are respectively a front change member 5a disposed at the front tooth input end of the central column 43 and a rear change member 5b disposed at the rear tooth output end of the central column 43, so that the front change member 5a and the rear change member 5b can manage the width of the tooth channel 40 at the two end positions. The front change member 5a and the rear change member 5b have the same structure but are placed in opposite directions. The front change member 5a in the shape of a saddle horse includes a front left side wall 51a, a front right side wall 52a, and a front transverse wall 53a connected between the front left side wall 51a and the front right side wall 52a, and the front left side wall 51a and the front right side wall 52a are arranged in an eight-shaped shape to form an eight-shaped channel, and the rear change member 5b includes a rear left side wall 51b, a rear right side wall 52b, and a rear transverse wall 53b, and the rear left side wall 51b and the rear right side wall 52b are also arranged in an eight-shaped shape. A front left through hole 425a and a front right through hole 425b 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 426a and a rear right through hole 426b are provided on the wall located on the side of the chain tooth output end. The front change member 5a rides on the side of the chain tooth input end of the second plate body 42, and the rear change member 5b rides on the side of the chain tooth output end of the second plate body 42. Taking the front change member 5a located on the side of the chain tooth input end as an example, the change member 5 that can move up and down has two states. The first state is that the front left side wall 51a and the front right side wall 52a can pass through the front left through hole 425a and the front right through hole 426a on the second plate body 42. 5b 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 51a and the front right side wall 52a can be partially inserted into the front left through hole 425a and the front right through hole 425b on the second plate body 42 and a height is left between the lower surfaces of the front left side wall 51a and the front right side wall 52a 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 zipper head 3.

[0036] 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 5a is arranged in the front concave pit 420a, and the rear changing member 5b is arranged in the rear concave pit 420b. Since the structures of the two concave pits are the same except for the opposite orientations, taking the front concave pit 420a as an example, the front concave pit 420a includes a front bottom wall 421a, and front left through holes 425a and front right through holes 425b are arranged on the front bottom wall 421a. The changing member 5 rides on the front bottom wall 421a of the front concave pit 420a, and the front left side wall 51a and the front right side wall 52a can extend through the front bottom wall 421a of the front concave pit 420a into the tooth channel 40 to manage the width of the tooth channel 40.

[0037] A further technical solution may also be that the 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 the two 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 610 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.

[0038] 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 5a and the rear changing member 5b, so that the front changing member 5a and the rear changing member 5b 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 63a and the first rear pressing working surface 63b are arranged axially facing each other. Further, a sloped second front pressing working surface 54a is provided on the top end surface of the front changing member 5a, and a sloped second rear pressing working surface 54b is provided on the top end surface of the rear changing member 5b. In this way, the actuator 6 can push the front changing member 5a to move downward by means of the first front pressing working surface 63a and the second front pressing working surface 54a, or push the rear changing member 5b to move downward by means of the first rear pressing working surface 63b and the second rear pressing working surface 54b.

[0039] 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 tooth channel 40 at the 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 tooth channel 40 of the zipper head when the zipper head 3 moves to the leftmost or rightmost end. This is beneficial for the left changing member 5a or the right changing member 5b to easily move to both sides of the upper stop 91 or the lower stop 92 when the zipper head 3 moves in the reverse direction, so as to narrow the width of the tooth channel 40 at the tooth output end.

[0040] With the zipper head 3 moving in the forward direction (such as Figure 1Taking the movement in the K direction indicated 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, when the first rear pressing working surface 63b moves forward, it touches the second rear pressing working surface 54b and pushes the rear changing member 5b 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 63a moves forward away from the second front pressing working surface 54a, creating an upper space above that does not hinder the upward movement of the front changing member 5a. When the actuator 6 moves forward and combines 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 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 51a and the front right side wall 52a upward, causing the front changing member 5a to move upward. The tooth channel 40 at the tooth input end returns from the eight-shaped channel to the wider original state, allowing the unmeshed teeth 2 to 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 slider 3. When the slider 3 travels forward to the leftmost position of the chain tape 1 or the teeth 2, the upper stop 91 enters the tooth channel 40 and stops the slider 3, and the slider 3 meshes and arranges all the teeth 2, whether opened or not, directly in front of it. If there are opened teeth 2 behind it (i.e., in the reverse direction opposite to the forward direction) afterwards, move the slider 3 in the reverse direction to the end position at the right end of the teeth 2. The method of meshing the teeth 2 during reverse movement is the same as the above forward meshing method, except that the tooth input end and the tooth output end of the slider 3 are swapped due to the change in the moving direction of the slider 3.

[0041] The second embodiment:

[0042] This embodiment is a further improvement based on the first 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 43 connecting the first plate body 41 and the second plate body 42. A tooth channel 40 capable of 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 through which the belt 2 can pass. 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 5a and rear changing members 5b is the same as that in the first embodiment.

[0043] However, the structure is different from that of the first embodiment. As Figure 6 shown, the 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 5a and the rear changing member 5b. A pressing spring 8 is arranged between the left pressing strip 7a, the right pressing strip 7b and the front changing member 5a, the rear changing member 5b. The pressing spring 8 can provide a spring force for the front changing member 5a and the rear changing member 5b to move towards the tooth channel 40. However, if an opposite force is provided below the front changing member 5a and the rear changing member 5b and the spring force of the pressing spring 8 is overcome, the changing member 5 can be moved in a direction away from the tooth channel 40.

[0044] A further technical solution may also be that the slider 3 further includes an actuating member 6 movably arranged on the second plate body 42. Longitudinal slots 610a and rear longitudinal slots ( Figure 6(not shown as blocked by the wall body), both 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 45a and the rear positioning post 45b. 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 sloped first front pressing working surface 65a, and the lower end surface of the rear sliding block 61b has a sloped first rear pressing working surface 65b. 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 5a and the rear changing member 5b to move downward by means of the first front pressing working surface 65a and the first rear pressing working surface 65b.

[0045] in the forward direction with the slider 3 (such as Figure 1Taking the movement in the K direction indicated as an example for illustration, when the tab 9 is driven by an external driving force, the actuator 6 will first slide forward relative to the base 4 on the front positioning post 45a and the rear positioning post 45b. At the tooth output end of the base 4, during the forward movement of the first rear pressing working surface 65b, it touches the rear transverse wall 53b of the rear changing member 5b. Under the combined action of the actuator 6 and the pressing spring 8, the rear changing member 5b 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 53a of the front changing member 5a and creates an upper space above the front changing member 5a that does not hinder the upward movement of the front changing member 5a. However, at this time, under the action of the pressing spring 8, it still remains in the tooth channel 40. When the actuator 6 moves forward to combine with the front limiting block 46a, the actuator 6 will drive the base 4 to move forward together on the teeth 2. In this way, when a pair of unmeshed and side-by-side teeth 2 enter the slider 3 from the tooth channel 40 at the tooth input end, the teeth 2 can squeeze the front left side wall 51a and the front right side wall 52a upward. After overcoming the downward acting force of the pressing spring 8, the front changing member 5a 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 5a 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 2 and the second plate body 42 to make the movement of the teeth more stable; the unmeshed teeth 2 continue to move toward the eight-shaped channel at the tooth output end and mesh together and leave the slider 3. When the slider 3 moves forward to the leftmost position of the tape 1 or the teeth 2, the upper stop 91 enters the tooth channel 40 and stops the slider 3. The 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) after that, move the slider 3 in the reverse direction to the end position at the right end of the teeth 2. The method of meshing the teeth 2 during reverse movement is the same as the above forward meshing method. The difference is that the tooth input end and the tooth output end of the slider 3 are swapped due to the change in the movement direction of the slider 3.

Claims

1. Imitation switch-type two-way zipper head. The zipper head includes a base arranged to extend axially. The base includes a first plate body, a second plate body located above the first plate body, and a central cylinder connecting the first plate body and the second plate body. A slider channel allowing slider teeth to pass through is arranged between the first plate body and the second plate body. The central cylinder divides the central area of the slider channel into a left slider channel and a right slider channel allowing the left and right slider teeth of the zipper to pass through respectively. Vertical side plates are respectively arranged on the left and right sides of the first plate body and / or the second plate body. The vertical side plates do not completely enclose the left and right sides of the space between the first plate body and the second plate body but leave a slider tape gap allowing the slider tape to pass through. The vertical side plates are used to prevent the slider teeth entering the slider channel from disengaging in the left and right directions. It is characterized in that, The slider further includes two changing members disposed in front of and behind the central cylinder. The changing member is in the shape of a pommel horse and includes a left side wall, a right side wall, and a transverse wall connecting between the left side wall and the right side wall. The two changing members are movably disposed on the second plate body such that the left side wall and the right side wall of the changing member can extend into the tooth channel to respectively manage the width of the tooth channel at both ends of the base; wherein, based on the tooth output end and the tooth input end determined by the current moving direction of the slider, the changing member at the tooth output end extends into the tooth channel in response to the movement of the slider so that the width of the tooth channel at the current tooth output end is suitable for a pair of teeth to mesh and slide out of the slider, and the changing member at the tooth input end moves upward in response to the movement of the slider to avoid the teeth so that the tooth channel at the tooth input end is changed to allow a pair of non-meshed and horizontally arranged teeth to pass side by side into the slider; It further includes an actuating member movably disposed on the second plate body. The actuating member can correspondingly move on the second plate body in response to the driving force for driving the slider to move forward and backward. The actuating member is used to drive the changing member at the tooth output end to move into the tooth channel when it moves, so that a pair of teeth can mesh and pass through, and is also used to create an upper space above the changing member at the tooth input end that does not hinder the upward movement of the changing member, so that even a pair of non-meshed and horizontally arranged teeth can enter the tooth channel after the changing member moves upward.

2. The imitation switch-type two-way zipper head according to claim 1, characterized in that, The left side wall and the right side wall are arranged in a V-shaped pattern to form a V-shaped channel. Based on the tooth output end and the tooth input end determined by the current moving direction of the slider, when the left side wall and the right side wall of the changing member at the tooth output end extend into the tooth channel, the V-shaped channel can guide a pair of non-meshed and horizontally arranged teeth to gradually converge and mesh.

3. The imitation switch-type two-way zipper head according to claim 1, characterized in that, The changing member straddles the second plate body, and the left side wall and the right side wall can extend through the second plate body into the tooth channel.

4. The imitation switch-type two-way zipper head according to claim 3, characterized in that, Pits are respectively arranged at both ends of the second plate body, and one changing member is arranged in one pit. The changing member straddles the bottom wall of the pit, and the left side wall and the right side wall can extend through the bottom wall of the pit into the tooth channel.

5. The imitation switch-type two-way zipper head according to claim 3, wherein It further includes a pressing strip connected to the second plate body. The pressing strip is located above the changing member, and a top pressure spring is arranged between the pressing strip and the changing member.

6. The imitation switch-type two-way zipper head according to any one of claims 1 to 5, characterized in that, Both lower end faces of the two ends of the actuating member have a sloped first top pressure working surface, and the actuating member pushes the changing member to move downward by means of the first top pressure working surface.

7. The imitation switch-type two-way zipper head according to any one of claims 1 to 5, characterized in that, The top end face of the changing member is provided with a sloped second top pressure working surface, and the actuating member pushes the changing member to move downward by means of the second top pressure working surface.

8. The imitation switch-type two-way zipper head according to any one of claims 1 to 5, characterized in that, Long slots are arranged at both ends of the actuating member of the changing member, and positioning columns are respectively arranged at both ends of the second plate body. The actuating member of the changing member is sleeved on the positioning columns through the long slots at both ends and can move in the forward and reverse directions under the guidance of the positioning columns.

9. A zipper, comprising a pair of chain tapes, with teeth respectively arranged on the inner sides of the pair of chain tapes; characterized in that, A slider according to any one of claims 1 to 8 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 slider, and the slider is used to mesh the opened teeth on any one of its two sides.

10. The zipper according to claim 9, characterized in that, 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 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 slider.

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