CN222425485U - Auxiliary pull head, pull head assembly and zipper - Google Patents

Abstract

The present application is applicable to the technical field of zipper equipment, and provides an auxiliary slider, a slider assembly and a zipper. The auxiliary slider is used to cooperate with the main slider to make the two opposite chains in the zipper engage or separate. The auxiliary slider includes a slider body, and the slider body has a limit groove for inserting a part of the structure of the main slider. The limit groove has two limit groove walls symmetrically arranged with a preset surface as the center. The two limit groove walls of the limit groove are used to contact with the main slider to limit the main slider in a first preset direction. The first preset direction is parallel to the direction from one limit groove wall of the limit groove to the other limit groove wall. By using the auxiliary slider of the present application to limit the main slider, it is avoided that the main slider will tilt to one side relative to the auxiliary slider due to shaking, which not only ensures that the chain can be smoothly inserted into the main slider, but also ensures that the chain can be smoothly inserted from the main slider into the auxiliary slider.

Description

Auxiliary pull head, pull head assembly and zipper

Technical Field

The application belongs to the technical field of zipper equipment, and particularly relates to an auxiliary pull head, a pull head assembly and a zipper.

Background

A slide fastener is a common device for connecting and closing articles, which is generally composed of two opposite stringers and a plurality of sliders, the sliders serving to engage or disengage the two opposite stringers by sliding.

The existing slide fastener is divided into a single-open slide fastener and a double-open slide fastener, wherein the single-open slide fastener is provided with one pull head, the double-open slide fastener is provided with two pull heads, the two pull heads can slide along the directions of approaching to each other or separating from each other, and the double-open slide fastener can be generally applied to clothes, bags or tents.

Referring to fig. 1, the double-open slide fastener of the related art includes a main slider 10 and an auxiliary slider 20, the main slider 10 and the auxiliary slider 20 being capable of sliding in directions approaching or separating from each other, the main slider 10 being likely to shake when the chain 30 is ready to be inserted and thus being inclined toward one side with respect to the auxiliary slider 20, in which case a user spends additional effort to swing the main slider 10 to bring the main slider 10 and the auxiliary slider 20 back into alignment, at which time the chain 30 is smoothly inserted from the main slider 10 into the auxiliary slider 20, which is time consuming and labor consuming and increases the risk of the slide fastener being damaged.

Disclosure of utility model

The embodiment of the application aims to provide an auxiliary pull head, a pull head assembly and a zipper, and aims to solve the technical problem that a chain in the prior art cannot be smoothly inserted into an auxiliary pull head from a main pull head.

In order to achieve the above object, according to one aspect of the present application, there is provided an auxiliary slider for cooperating with a main slider to engage or disengage two opposite stringers in a slide fastener, the auxiliary slider including a slider body having a limit groove into which a part of a structure of the main slider is inserted, the limit groove having two limit groove walls symmetrically arranged centering on a predetermined surface, both limit groove walls of the limit groove being for contact with the main slider to limit the main slider in a first predetermined direction, the first predetermined direction being parallel to a direction from one of the limit groove walls to the other of the limit groove walls.

Optionally, the pull head body comprises a first pull head plate and a second pull head plate, the second pull head plate is located on one side of the first pull head plate, the second pull head plate comprises a pull head plate body and a limiting plate body, the pull head plate body completely covers the first pull head plate, the limiting plate body is arranged on one side of the pull head plate body, a limiting groove is formed in the surface, close to the first pull head plate, of the limiting plate body, and extends towards the direction away from the pull head plate body, so that a limiting opening for inserting a part of the main pull head structure into the limiting groove is formed.

Optionally, the limit groove is further provided with a stop groove wall, the stop groove wall of the limit groove is located at one side of the limit groove wall of the limit groove, which is close to the pull head plate body, and the stop groove wall of the limit groove is used for being attached to the surface of the main pull head so as to stop the main pull head from moving towards the pull head plate body.

Optionally, a surface of the first slider plate remote from the second slider plate is recessed toward the second slider plate to form a first recess.

Optionally, a surface of the second slider plate remote from the first slider plate is recessed toward the first slider plate to form a second recess.

Optionally, the directions from the first slider plate to the second slider plate are parallel to a second preset direction, and the second preset direction and the first preset direction form an included angle; the auxiliary pull head comprises a first pull head plate, a second pull head plate, a connecting column, a limiting groove, a limiting pin, a first pull head plate and a second pull head plate, wherein a working gap for the engagement or separation of two opposite chains in the zipper is arranged between the first pull head plate and the second pull head plate, the extending direction of the working gap is parallel to the third preset direction, the third preset direction forms an included angle with the first preset direction, the third preset direction forms an included angle with the second preset direction, the plane where the second preset direction and the third preset direction are located is a preset plane, the auxiliary pull head further comprises the connecting column, the connecting column is arranged in the working gap, the first pull head plate is connected with the second pull head plate through the connecting column, the connecting column is located at one side of the limiting groove, and the connecting column is used for separating the two opposite chains in the zipper.

Optionally, two first limiting strips which are symmetrically arranged with the preset surface as a center are arranged on the surface of the first slider plate, which is close to the second slider plate, and the first limiting strips are used for limiting two opposite chains in the zipper positioned in the working gap to be separated from the working gap.

Optionally, two second limiting strips which are symmetrically arranged with the preset surface as a center are arranged on the surface, close to the first slider plate, of the second slider plate, and the second limiting strips are used for limiting two opposite chains in the zipper in the working gap to be separated from the working gap.

According to another aspect of the present application, there is provided a slider assembly comprising a main slider for cooperating with an auxiliary slider to engage or disengage two opposing stringers in a slide fastener, and the main slider being slidably mounted on one side of the auxiliary slider, the main slider having a stopper portion insertable into and contacting two stopper groove walls of the stopper groove to thereby allow the main slider to be stopped in a first predetermined direction.

According to yet another aspect of the present application there is provided a slide fastener comprising two opposed stringers and a slider assembly as described above for engaging or disengaging the two opposed stringers.

Compared with the prior art, the auxiliary pull head has the beneficial effects that when the auxiliary pull head is matched with the main pull head to enable two opposite chains in the zipper to be meshed, firstly, before the chain to be matched with the main pull head and the auxiliary pull head is ready to be inserted into the main pull head, part of the structure of the main pull head is inserted into the limiting groove of the auxiliary pull head, and the main pull head is limited by utilizing the two limiting groove walls in the limiting groove, so that the main pull head is prevented from shaking in the limiting groove along the first preset direction, the stability of the main pull head is ensured, then, the chain to be matched with the main pull head and the auxiliary pull head can be driven to be sequentially inserted into the main pull head and the auxiliary pull head, and then, the main pull head and the auxiliary pull head are driven to move in the directions away from each other, so that the two opposite chains are meshed. By adopting the auxiliary pull head to limit the main pull head, the main pull head is prevented from tilting towards one side relative to the auxiliary pull head due to shaking, so that the chain can be smoothly inserted into the main pull head, and the chain can be smoothly inserted into the auxiliary pull head from the main pull head.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a structure of a double-open slide fastener according to the related art;

FIG. 2 is a schematic structural diagram of an auxiliary slider according to an embodiment of the present application;

FIG. 3 is a schematic front view of an auxiliary slider according to an embodiment of the present application;

FIG. 4 is a schematic side view of an auxiliary slider according to an embodiment of the present application;

fig. 5 is a schematic structural view of a zipper according to an embodiment of the present application.

Reference numerals related to the above figures are as follows:

10. 20 parts of main pull head, 30 parts of auxiliary pull head and 30 parts of chain;

100. Auxiliary pull head, 110, pull head body, 111, first pull head plate, 1111, first concave pit, 1112, first bulge, 112, second pull head plate, 1121, pull head plate body, 1122, limit plate body, 1123, limit groove, 11231, limit groove wall, 11232, limit groove wall, 11233, limit opening, 1124, second concave pit, 1125, second bulge, 120, connecting column, 130, working gap, 140, first limit bar, 150, second limit bar;

200. 210 parts of a main pull head, 300 parts of a limiting part and a chain.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. Embodiments of the application and features of the embodiments may be combined with each other without conflict. The application will be described in detail below with reference to the drawings in connection with embodiments.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As noted in the background, currently, zippers are a common device for joining and closing articles, which is generally composed of two opposite stringers and a plurality of sliders, the function of which is to engage or disengage the two opposite stringers by sliding. The existing slide fastener is divided into a single-open slide fastener and a double-open slide fastener, wherein the single-open slide fastener is provided with one pull head, the double-open slide fastener is provided with two pull heads, the two pull heads can slide along the directions of approaching to each other or separating from each other, and the double-open slide fastener can be generally applied to clothes, bags or tents.

Referring to fig. 1, the double-open slide fastener of the related art includes a main slider 10 and an auxiliary slider 20, the main slider 10 and the auxiliary slider 20 being capable of sliding in directions approaching or separating from each other, the main slider 10 being likely to shake when the chain 30 is ready to be inserted and thus being inclined toward one side with respect to the auxiliary slider 20, in which case a user spends additional effort to swing the main slider 10 to bring the main slider 10 and the auxiliary slider 20 back into alignment, at which time the chain 30 is smoothly inserted from the main slider 10 into the auxiliary slider 20, which is time consuming and labor consuming and increases the risk of the slide fastener being damaged.

Referring to fig. 2 to 5, in order to solve the above-mentioned problems, according to an aspect of the present application, an embodiment of the present application provides an auxiliary slider 100 for cooperating with a main slider 200 to engage or disengage two opposite stringers 300 in a slide fastener, the auxiliary slider 100 including a slider body 110, the slider body 110 having a limit groove 1123 into which a partial structure of the main slider 200 is inserted, the limit groove 1123 having two limit groove walls 11231 symmetrically arranged centering on a predetermined surface, both limit groove walls 11231 of the limit groove 1123 being adapted to contact the main slider 200 to limit the main slider 200 in a first predetermined direction, the first predetermined direction being parallel to a direction from one of the limit groove walls 11231 to the other limit groove wall 11231 of the limit groove 1123.

In the embodiment of the application, the auxiliary slider 100 is used for a zipper, the zipper comprises two opposite chains 300, the main slider 200 is positioned on one side of the auxiliary slider 100, gaps for embedding and sliding the chains 300 are formed on the main slider 200 and the auxiliary slider 100, so that the main slider 200 and the auxiliary slider 100 can be slidably arranged on the chains 300, the two opposite chains 300 can be meshed or separated through the matching of the main slider 200 and the auxiliary slider 100, the zipper has a zipper-closing state and an zipper-opening state, when the zipper is in the zipper-closing state, the two opposite chains 300 are meshed, and when the zipper is in the zipper-opening state, the two opposite chains 300 are separated. In the case that the partial structure of the main slider 200 is inserted into the limit groove 1123, two opposite surfaces in the partial structure of the main slider 200 are respectively in contact with two limit groove walls 11231 of the limit groove 1123, thereby preventing the main slider 200 from shaking in the first preset direction within the limit groove 1123.

When the auxiliary pull head 100 is matched with the main pull head 200 to enable two opposite chains 300 in the zipper to be meshed, firstly, before the chains 300 to be matched with the main pull head 200 and the auxiliary pull head 100 are ready to be inserted into the main pull head 200, part of the structure of the main pull head 200 is inserted into a limit groove 1123 of the auxiliary pull head 100, and the main pull head 200 is limited by two limit groove walls 11231 in the limit groove 1123, so that the main pull head 200 is prevented from shaking in a first preset direction in the limit groove 1123, the stability of the main pull head 200 is ensured, then the chains 300 to be matched with the main pull head 200 and the auxiliary pull head 100 can be driven to be sequentially inserted into the main pull head 200 and the auxiliary pull head 100, and then the main pull head 200 and the auxiliary pull head 100 are driven to move in a direction away from each other, so that the two opposite chains 300 can be meshed. By adopting the auxiliary pull head 100 of the application to limit the main pull head 200, the main pull head 200 is prevented from tilting towards one side relative to the auxiliary pull head 100 due to shaking, so that the chain 300 can be smoothly inserted into the main pull head 200, and the chain 300 can be smoothly inserted into the auxiliary pull head 100 from the main pull head 200.

In addition, in order to secure the stability of the main slider 200 in the limit groove 1123, in the case where a part of the structure of the main slider 200 is inserted into the limit groove 1123, two opposite surfaces on the part of the structure of the main slider 200 inserted into the limit groove 1123 are respectively bonded with two limit groove walls 11231 of the limit groove 1123.

Referring to fig. 2 to 5, in one embodiment, the slider body 110 includes a first slider plate 111 and a second slider plate 112, the second slider plate 112 is located at one side of the first slider plate 111, the second slider plate 112 includes a slider plate body 1121 and a stopper plate body 1122, the slider plate body 1121 completely covers the first slider plate 111, the stopper plate body 1122 is installed at one side of the slider plate body 1121, a stopper groove 1123 is provided on a surface of the stopper plate body 1122 near the first slider plate 111, and the stopper groove 1123 extends toward a direction away from the slider plate body 1121 to form a stopper opening 11233 into which a part of the structure of the main slider 200 is inserted into the stopper groove 1123.

In the present embodiment, the slider plate 1121 and the first slider plate 111 have substantially the same shape, and the stopper plate 1122 is fixedly attached to one side of the slider plate 1121. During the process of inserting part of the structure of the main slider 200 into the limit groove 1123, the main slider 200 is aligned with the limit opening 11233 of the limit groove 1123, and then the main slider 200 is driven to move towards the direction of the limit groove 1123, and during the process of moving part of the structure of the main slider 200 in the limit groove 1123, two opposite surfaces of the part of the structure of the main slider 200 inserted into the limit groove 1123 are respectively kept in fit with two limit groove walls 11231 of the limit groove 1123. The design that the slider plate body 1121 completely covers the first slider plate 111 prevents the interference between the main slider 200 and the auxiliary slider 100, ensures that the main slider 200 can be stably limited in the limiting groove 1123, and simultaneously provides the limiting opening 11233 with a guiding function. Of course, in other embodiments, the limiting groove 1123 may also be formed on the surface of the first slider plate 111 adjacent to the second slider plate 112.

In addition, in order to facilitate the manufacturing of the second slider plate 112, the slider plate body 1121 and the stopper plate body 1122 are integrally formed, and in order to enable the partial structure of the main slider 200 to be more smoothly inserted into the stopper groove 1123, the interval between the two stopper groove walls 11231 of the stopper groove 1123 is gradually increased in a direction away from the slider plate body 1121, so that the stopper opening 11233 of the stopper groove 1123 is horn-shaped.

Referring to fig. 2 to 5, in one embodiment, the limit groove 1123 further has a stop groove wall 11232, and the stop groove wall 11232 of the limit groove 1123 is located on a side of the limit groove wall 11231 of the limit groove 1123 near the slider plate 1121, and the stop groove wall 11232 of the limit groove 1123 is used to be attached to a surface of the main slider 200 so as to block the main slider 200 from moving toward the slider plate 1121.

In this embodiment, the stop groove wall 11232 of the limit groove 1123 is located between two stop groove walls 11231 of the limit groove 1123, and when a part of the structure of the main slider 200 is inserted into the limit groove 1123, the surface of the part of the structure of the main slider 200, which is close to the second slider plate 112 and is attached to the stop groove wall 11232 of the limit groove 1123, stops driving the main slider 200 to move, and at this time, the operation of inserting the part of the structure of the main slider 200 into the limit groove 1123 is completed. The limiting groove 1123 is provided to function not only to block the shaking of the main slider 200 but also to function as a stopper.

Referring to fig. 2 and 3, in one embodiment, a surface of the first slider plate 111 remote from the second slider plate 112 is recessed toward the second slider plate 112 to form a first recess 1111. The first recess 1111 is provided to reduce the weight of the auxiliary slider 100 on the premise of facilitating the sliding of the auxiliary slider 100 carried by the user, thereby reducing the possibility of the auxiliary slider 100 being inclined due to gravity or the like. In addition, to improve the user's experience, two first protrusions 1112 are formed on the surface of the first slider plate 111 away from the second slider plate 112, the first recess 1111 is located between the two first protrusions 1112, and the two first protrusions 1112 and the first slider plate 111 are integrally formed.

Referring to fig. 2 and 3, in one embodiment, a surface of the second slider plate 112 remote from the first slider plate 111 is recessed toward the first slider plate 111 to form a second recess 1124. The second recess 1124 is formed on the surface of the slider plate 1121 remote from the first slider plate 111, and the second recess 1124 is provided to reduce the weight of the auxiliary slider 100 while facilitating the sliding of the auxiliary slider 100 carried by a user, thereby reducing the possibility of tilting the auxiliary slider 100 due to gravity or the like. In addition, in order to improve the user's experience, two second protrusions 1125 are formed on the surface of the second slider plate 112 far from the first slider plate 111, the second recesses 1124 are located between the two second protrusions 1125, the two second protrusions 1125 and the second slider plate 112 are integrally formed, and at the same time, the direction from one second protrusion 1125 to the other second protrusion 1125 of the two second protrusions 1125 is parallel to the direction from one first protrusion 1112 to the other first protrusion 1112 of the two first protrusions 1112, and in addition, the two second protrusions 1125 are both disposed on the surface of the slider plate body 1121 far from the first slider plate 111.

Referring to fig. 2 to 4, in one embodiment, the directions of the first slider plate 111 to the second slider plate 112 are parallel to a second preset direction, the second preset direction forms an included angle with the first preset direction, a working gap 130 for the engagement or separation of two opposite stringers 300 in the slide fastener is provided between the first slider plate 111 and the second slider plate 112, the extending direction of the working gap 130 is parallel to a third preset direction, the third preset direction forms an included angle with the first preset direction, the third preset direction forms an included angle with the second preset direction, the plane in which the second preset direction and the third preset direction are located is a preset plane, the auxiliary slider 100 further comprises a connecting post 120, the connecting post 120 is arranged in the working gap 130, the first slider plate 111 and the second slider plate 112 are connected through the connecting post 120, the connecting post 120 is located at one side of the limit slot 1123, and the connecting post 120 is used for separating the two opposite stringers 300 in the slide fastener.

In this embodiment, the connecting post 120 is fixedly connected to the first slider plate 111, and the connecting post 120 is fixedly connected to the slider plate body 1121, so that the first slider plate 111 and the second slider plate 112 are connected by the connecting post 120, and when two opposite stringers 300 in the zipper are required to be separated, the auxiliary slider 100 is driven to move in a direction approaching to the main slider 200, and in this process, the two opposite and engaged stringers 300 are separated under the splitting action applied by the connecting post 120. The connecting post 120 is provided to not only perform a connecting function but also to separate the two engaged chains 300. In addition, in order to facilitate the manufacturing of the auxiliary slider 100, the first slider plate 111, the second slider plate 112, and the connection post 120 are integrally formed.

In addition, in order to facilitate the manufacturing of the auxiliary slider 100, the second predetermined direction is perpendicular to the first predetermined direction, both the first predetermined direction and the second predetermined direction are perpendicular to the third predetermined direction, and the direction from one first protrusion 1112 to the other first protrusion 1112 of the two first protrusions 1112 is parallel to the third predetermined direction.

Referring to fig. 2 to 5, in one embodiment, two first stop strips 140 symmetrically arranged about a predetermined plane are provided on a surface of the first slider plate 111 adjacent to the second slider plate 112, and the first stop strips 140 are used for limiting two opposite stringers 300 in a slide fastener located in the working gap 130 from being separated from the working gap 130.

In this embodiment, the first stop bar 140 is provided to limit the removal of two opposing stringers 300 in the zipper located within the working space 130 from the working space 130. In addition, in order to ensure the blocking effect, the length direction of the first limiting strips 140 is parallel to the third preset direction, in order to ensure the practical use space of the working gap 130 as much as possible, the surfaces of the two first limiting strips 140, which are far away from each other, are respectively kept flush with two opposite surfaces on the first slider plate 111, and in order to facilitate the processing and manufacturing of the first slider plate 111, the two first limiting strips 140 and the first slider plate 111 are integrally formed.

Referring to fig. 2 to 5, in one embodiment, two second limiting bars 150 are disposed on the surface of the second slider plate 112 adjacent to the first slider plate 111 and symmetrically disposed about the preset surface, and the second limiting bars 150 are used to limit two opposite stringers 300 in the slide fastener located in the working gap 130 from being separated from the working gap 130.

In this embodiment, the second stop bar 150 is provided to limit the removal of two opposing stringers 300 in the zipper located within the working space 130 from the working space 130. In addition, in order to ensure the blocking effect, the length direction of the second limiting strips 150 is parallel to the third preset direction, in order to ensure the practical use space of the working gap 130 as much as possible, the surfaces of the two second limiting strips 150, which are far away from each other, are respectively kept flush with two opposite surfaces on the second slider plate 112, and in order to facilitate the processing and manufacturing of the second slider plate 112, the two second limiting strips 150 and the second slider plate 112 are integrally formed.

Referring to fig. 2 to 5, according to another aspect of the present application, there is provided a slider assembly including a main slider 200 and the above-described auxiliary slider 100, the main slider 200 being adapted to be engaged with the auxiliary slider 100 to engage or disengage two opposite stringers 300 in a slide fastener, the main slider 200 being slidably mounted on one side of the auxiliary slider 100, the main slider 200 having a stopper portion 210, the stopper portion 210 of the main slider 200 being insertable into a stopper groove 1123 and contacting both stopper groove walls 11231 of the stopper groove 1123 such that the main slider 200 is stopped in a first predetermined direction.

In this embodiment, the main slider 200 and the auxiliary slider 100 are both used for a slide fastener, the main slider 200 is of a conventional slider structure, and is not modified, the slide fastener includes two opposite stringers 300, and the main slider 200 and the auxiliary slider 100 are each provided with a gap for the stringers 300 to be inserted and slid, so that the main slider 200 and the auxiliary slider 100 can be slidably mounted on the stringers 300, and the two opposite stringers 300 can be engaged or separated by the cooperation of the main slider 200 and the auxiliary slider 100, and the slide fastener has a closed state and an open state, in which the two opposite stringers 300 are engaged, and in which the two opposite stringers 300 are separated, and in which the limit portion 210 of the main slider 200 is inserted into the limit groove 1123 of the slider body 110, and in which the two opposite surfaces of the limit portion 210 of the main slider 200 are respectively engaged with the two limit groove walls 11231 of the limit groove 1123, so as to prevent the main slider 200 from being abutted in the first preset direction in the limit groove 1123.

Referring to fig. 2 to 5, according to still another aspect of the present application, there is provided a slide fastener comprising two opposite stringers 300 and the slider assembly described above for engaging or disengaging the two opposite stringers 300.

In the embodiment of the application, the main slider 200 and the auxiliary slider 100 are provided with a gap for the insertion and sliding of the chain 300, so that the main slider 200 and the auxiliary slider 100 can be slidably mounted on the chain 300, and the two opposite chains 300 can be engaged or separated by the cooperation of the main slider 200 and the auxiliary slider 100, the zipper has a closed state and an open state, when the zipper is in the closed state, the two opposite chains 300 are engaged, and when the zipper is in the open state, the two opposite chains 300 are separated, and when the limit part 210 of the main slider 200 is inserted into the limit groove 1123 of the slider body 110, the two opposite surfaces of the limit part 210 of the main slider 200 are respectively engaged with the two limit groove walls 11231 of the limit groove 1123, thereby preventing the main slider 200 from shaking in the first preset direction in the limit groove 1123.

In summary, the auxiliary pull head, the pull head assembly and the zipper provided by the embodiment have the beneficial effects that when the auxiliary pull head 100 is matched with the main pull head 200 to enable two opposite chains 300 in the zipper to be meshed, firstly, before the chain 300 to be matched with the main pull head 200 and the auxiliary pull head 100 is ready to be inserted into the main pull head 200, part of the structure of the main pull head 200 is inserted into a limit groove 1123 of the auxiliary pull head 100, and the main pull head 200 is limited by utilizing two limit groove walls 11231 in the limit groove 1123, so that the main pull head 200 is prevented from shaking in the limit groove 1123 along a first preset direction, the stability of the main pull head 200 is ensured, then, the chain 300 to be matched with the main pull head 200 and the auxiliary pull head 100 can be driven to be sequentially inserted into the main pull head 200 and the auxiliary pull head 100, and then the main pull head 200 and the auxiliary pull head 100 are driven to move in a direction away from each other, and the two opposite chains 300 can be meshed. By adopting the auxiliary pull head 100 of the application to limit the main pull head 200, the main pull head 200 is prevented from tilting towards one side relative to the auxiliary pull head 100 due to shaking, so that the chain 300 can be smoothly inserted into the main pull head 200, and the chain 300 can be smoothly inserted into the auxiliary pull head 100 from the main pull head 200.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (9)

1. The auxiliary pull head is used for being matched with a main pull head so that two opposite chains in a zipper are meshed or separated, the auxiliary pull head comprises a pull head body, the pull head body is provided with a limiting groove for inserting a part of a structure of the main pull head, the limiting groove is provided with two limiting groove walls which are symmetrically arranged with a preset surface as a center, the two limiting groove walls of the limiting groove are both used for being in contact with the main pull head so as to limit the main pull head in a first preset direction, the first preset direction is parallel to the direction from one limiting groove wall to the other limiting groove wall of the limiting groove, the pull head body comprises a first pull head plate and a second pull head plate, the second pull head plate comprises a pull head plate body and a limiting plate body, the pull head plate body completely covers the first pull head plate, the limiting plate body is arranged on one side of the pull head plate body, the limiting groove wall extends towards the limiting groove, and the limiting groove is far away from the surface of the limiting groove, and the limiting groove is formed in the direction of the pull head body.

2. The auxiliary pull head of claim 1, wherein the limit groove further has a stop groove wall, the stop groove wall of the limit groove is located at a side of the limit groove wall of the limit groove near the pull head plate body, and the stop groove wall of the limit groove is used for being attached to a surface of the main pull head so as to stop the main pull head from moving towards the pull head plate body.

3. The auxiliary slider of any one of claims 1 or 2, wherein a surface of the first slider plate remote from the second slider plate is recessed toward the second slider plate to form a first dimple.

4. The auxiliary slider of any one of claims 1 or 2, wherein a surface of the second slider plate remote from the first slider plate is recessed toward the first slider plate to form a second dimple.

5. The auxiliary slider of any one of claims 1 or 2, wherein the direction from the first slider plate to the second slider plate is parallel to a second preset direction, the second preset direction being at an angle to the first preset direction;

A working gap for the engagement or separation of two opposite chains in the zipper is formed between the first slider plate and the second slider plate, the extending direction of the working gap is parallel to a third preset direction, the third preset direction and the first preset direction form an included angle, the third preset direction and the second preset direction form an included angle, and the plane where the second preset direction and the third preset direction are located is the preset surface;

the auxiliary pull head further comprises a connecting column, the connecting column is arranged in the working gap, the first pull head plate and the second pull head plate are connected through the connecting column, the connecting column is located on one side of the limiting groove, and the connecting column is used for enabling two opposite chains in the zipper to be separated.

6. The auxiliary slider according to claim 5, wherein two first limiting strips which are symmetrically arranged with the preset surface as a center are arranged on the surface, close to the second slider, of the first slider plate, and the first limiting strips are used for limiting two opposite chains in the zipper in the working gap to be separated from the working gap.

7. The auxiliary slider according to claim 5, wherein two second limiting strips which are symmetrically arranged with the preset surface as a center are arranged on the surface, close to the first slider, of the second slider plate, and the second limiting strips are used for limiting two opposite chains in the zipper in the working gap to be separated from the working gap.

8. A slider assembly comprising a primary slider and an auxiliary slider as claimed in any one of claims 1 to 7, the primary slider being adapted to cooperate with the auxiliary slider to engage or disengage two opposed stringers in a slide fastener;

The main pull head is slidably mounted on one side of the auxiliary pull head, the main pull head is provided with a limiting part, and the limiting part of the main pull head can be inserted into the limiting groove and is contacted with two limiting groove walls of the limiting groove, so that the main pull head is limited in the first preset direction.

9. A slide fastener comprising two opposing stringers and a slider assembly as recited in claim 8, the pull head assembly is used for enabling two opposite chains to be meshed or separated.