A double-opening zipper

Abstract

This invention discloses a double-opening zipper, comprising a first zipper head, a second zipper head, a first zipper belt, and a second zipper belt. The first zipper belt includes a first set of chain teeth and a socket arranged sequentially on a straight line. The second zipper belt includes a second set of chain teeth and a pin arranged sequentially on a straight line. Both the first and second zipper heads have hooks, which are slidably mounted on the first set of chain teeth. The pin includes a hook buffer section located at the tail of the pin. The upper surface of the hook buffer section is positioned lower than the upper surface of the pin, which is located away from other parts of the pin. This invention has the advantage of being relatively easy to operate.

Description

Technical Field

[0001] This invention relates to zipper technology, and in particular to a double-opening zipper. Background Technology

[0002] Double-opening zippers are a common type of zipper widely used in down jackets and other clothing. They have two oppositely positioned upper and lower pulls. When opening and closing a double-opening zipper, the two pulls must be fully aligned, and the lower pull must be pulled to the correct position near the socket before inserting the pin into the cavity of either pull. If the two pulls are not fully aligned, the pin is easily blocked by the hook on the lower pull. Since the hook is fixed to the lower pull, the resistance acting on the hook will further act on the lower pull, affecting its position adjustment. This prevents the upper pull from being fully aligned with the lower pull, ultimately preventing the pin from being inserted quickly and easily. Multiple attempts are required to complete the zipper opening and closing, making it inconvenient. Currently, most products on the market have a fixed structure on the zipper socket. Users need to first embed the upper and lower pulls into this fixed structure to achieve full alignment before inserting the pin. This requires more time, and the zipper operation remains inconvenient.

[0003] In view of this, this case conducts an in-depth study of the above-mentioned issues and proposes a more convenient double-opening zipper. Summary of the Invention

[0004] In view of this, the object of the present invention is to provide a zipper that can be quickly unzipped.

[0005] To achieve the above objectives, the solution of the present invention is:

[0006] A double-opening zipper includes a first zipper head, a second zipper head, a first zipper belt, and a second zipper belt. The first zipper belt includes a first row of chain teeth and a socket arranged sequentially on the same straight line. The second zipper belt includes a second row of chain teeth and a pin arranged sequentially on the same straight line.

[0007] At least the first zipper has a hook, the first zipper and the second zipper are slidably disposed on the first chain teeth, and the first zipper is located between the second zipper and the socket;

[0008] The side facing each other of the first and second chain teeth is the inner side, and the side away from each other of the first and second chain teeth is the outer side. The side where the pin engages with the hook is the upper side, and the side of the pin away from the hook is the lower side. The end of the pin away from the second chain teeth is the tail end. The pin includes a hook buffer section that engages with the hook. The hook buffer section is located at the tail end of the pin, and the upper surface of the hook buffer section is positioned lower than the upper surface of the pin that avoids the hook buffer section.

[0009] Furthermore, a positioning block is provided on the outside of the socket. The positioning block cooperates with the fabric seam of the first zipper and the fabric seam of the second zipper. When the positioning block is simultaneously inserted through one side of the fabric seam of the first zipper and one side of the fabric seam of the second zipper, the other side of the fabric seam of the first zipper and the other side of the fabric seam of the second zipper are located on the same plane.

[0010] Furthermore, the upper surface of the pin has a stepped structure, and the recessed portion of the stepped structure is the upper surface of the hook buffer section.

[0011] Furthermore, when the hook passes directly above the hook buffer section, the hook does not come into contact with the hook buffer section.

[0012] Furthermore, the upper surface of the hook buffer section is an inclined surface.

[0013] Furthermore, the lower surface of the buffer section is also an inclined surface.

[0014] Furthermore, the inclined plane is a straight plane.

[0015] Furthermore, the inclined plane is a curved surface.

[0016] Furthermore, the arc-shaped surface is a downwardly concave arc-shaped surface.

[0017] With the above structure, the zipper proposed in this invention has the following technical effects: the pin has a hook buffer section located at the tail of the pin. The upper surface of the hook buffer section is lower than the upper surface of the pin that avoids the hook buffer section. When the pin passes through the zipper head, the interference of the hook buffer section located at the lower position with the hook is greatly reduced. The user can simultaneously align the two zipper heads during the process of inserting the pin, making it easier to insert the pin and close the zipper, making the operation more convenient. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a double-opening zipper according to one embodiment of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of a double-opening zipper according to another embodiment of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the pin of a double-opening zipper according to Embodiment 1 of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of a double-zipper socket according to Embodiment 1 of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the first zipper of a double-opening zipper according to Embodiment 2 of the present invention, omitting the structure of the zipper head except for the hook.

[0023] Figure 6 This is a right-side view of the pin structure of a double-opening zipper according to Embodiment 2 of the present invention.

[0024] Figure 7 This is a top view schematic diagram of the pin structure of a double-opening zipper according to Embodiment 3 of the present invention;

[0025] Figure 8 This is a right-side view of the pin structure of a double-opening zipper according to Embodiment 3 of the present invention.

[0026] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A;

[0027] In the diagram: 1. First zipper pull, 2. Second zipper pull, 3. First fabric belt, 4. First chain teeth, 5. Socket, 6. Second fabric belt, 7. Second chain teeth, 8. Pin, 9. Hook, 10. Positioning block, 11. Hook buffer section. Detailed Implementation

[0028] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0029] Implementation Method 1:

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4The illustrated double-opening zipper includes a first zipper pull 1, a second zipper pull 2, a first chain belt, and a second chain belt. The first chain belt includes a first fabric belt 3 and a first chain tooth row 4 and a socket 5 arranged sequentially on the first fabric belt along a straight line. The second chain belt includes a second fabric belt 6 and a second chain tooth row 7 and a pin 8 arranged sequentially on the second fabric belt 6 along a straight line. Preferably, in this embodiment, the first chain tooth row 4, the second chain tooth row 7, the socket 5, and the pin 8 are all made of plastic steel. The first chain tooth row 4, the second chain tooth row 7, the socket 5, and the pin 8 are all directly injection molded onto the first fabric belt 3 and the second fabric belt 6 using an injection molding process. The injection molding positions of the first chain tooth row 4, the second chain tooth row 7, the socket 5, and the pin 8 are the same as those of a conventional zipper. The first zipper pull 1 and the second zipper pull 2 ​​are conventional zipper pulls with hooks in the prior art, which will not be described in detail here.

[0031] The support core of the second pull head 2 is positioned away from the socket 5, and the first pull head 1 is located between the second pull head 2 and the socket 5, with the support core of the first pull head 1 facing the socket 5.

[0032] The pin 8 is strip-shaped, and the socket 5 is a block-shaped object that matches the shape of the pin 8. The pin 8 and the socket 5 are engaged and opened by the action of the first pull head 1 and the second pull head 2. The first chain tooth row 4 and the second chain tooth row 7 are also engaged and opened by the action of the first pull head 1 and the second pull head 2.

[0033] Both the first zipper pull 1 and the second zipper pull 2 ​​are zipper pulls that cooperate with plastic steel zippers. At least the first zipper pull 1 and the second zipper pull 2 ​​have a hook 9. In this embodiment, both the first zipper pull 1 and the second zipper pull 2 ​​have a hook 9. The hook 9 is a side hook, that is, the hook 9 is installed on one side of the center line axis of the first zipper pull 1 or the second zipper pull 2. When the first chain and the second chain are not pulled together, the first zipper pull 1 and the second zipper pull 2 ​​are slidably disposed on the first chain tooth row 4. The side hook of the first zipper pull 1 is configured to cooperate with the pin 8. The first zipper pull 1 and the second zipper pull 2 ​​are disposed opposite to each other, that is, the support cores of the first zipper pull 1 and the second zipper pull 2 ​​are disposed opposite to each other.

[0034] Let the side facing each other of the first chain teeth 4 and the second chain teeth 7 be the inner side, and the side facing away from each other of the first chain teeth 4 and the second chain teeth 7 be the outer side. The side where the pin 8 engages with the hook 9 is the upper side, and the side of the pin 8 facing away from the hook 9 is the lower side. The end of the pin 8 away from the second chain teeth 7 is the tail end, and the end opposite to the tail end is the head end. The pin 8 includes a hook buffer section 11, which is located at the tail of the pin 8. The upper surface of the hook buffer section 11 is set lower than the upper surface of the pin that avoids the hook buffer section 11. Specifically, from the shape, the fact that the upper surface of the hook buffer section 11 is set lower than the upper surface of the pin that avoids the hook buffer section 11 means that the thickness of the tail of the hook 8 where the hook buffer section 11 is located is less than the thickness of other parts of the pin 8, and the upper surface of the hook buffer section 11 is lower than the height of other parts of the pin 8.

[0035] As an optional optimization scheme, such as Figure 4 The socket 5 shown is provided with a positioning block 10 on its outer side. The positioning block 10 is integrally formed with the socket 5. The positioning block 10 is formed in sheet shape on both sides of the second fabric strip. The positioning block 10 cooperates with the fabric seam of the first pull head 1 and the second pull head 2. When the positioning block 10 is sequentially inserted into the first pull head 1 and the second pull head 2, the first pull head 1 and the second pull head 2 are roughly located in the same horizontal plane. The fabric seam on the side of the first pull head 1 and the second pull head 2 that cooperates with the pin 8 is also roughly located in the same plane, which plays a role in assisting alignment. In order to simplify the structure, the positioning block 10 can also be omitted.

[0036] like Figure 3 As shown, the upper surface of the pin 8 has a stepped structure. The protruding part of the stepped structure is located at the head end of the pin 8, and the recessed part of the stepped structure is located at the tail end of the pin 8. In this embodiment, the recessed part of the stepped structure is the hook buffer section 11.

[0037] The parameter settings of the hook buffer section 11 can be selected as needed. For example, in this embodiment, the hook buffer section 11 is the recessed part of the stepped structure. The depth of the recessed part can be set to different values ​​so that when the pin 8 passes through the first zipper 1, the hook and the hook buffer section 11 are in slight contact or not at all. As an optimal solution, when the pin 8 passes through the first zipper 1, the hook buffer section 11 and the hook 9 are not in contact. The hook buffer section 11, which is located at a lower position, does not interfere with the hook 9. At this time, the first zipper 1 and the second zipper 2 are not affected by the pin 8. At the same time, with the cooperation of the positioning block 10, the first zipper 1 and the second zipper 2 are easy to approach and align under the action of the pulling force, and the user can more easily insert the pin 8 to complete the zipper closure.

[0038] Implementation Method Two:

[0039] The difference between this embodiment and embodiment one is that the tail of the pin 8 is a prism with a gradually decreasing thickness from front to back. The tail of the pin 8 is the hook buffer section 11. The upper surface of the hook buffer section 11 is an inclined surface. The inclined surface is a straight surface. Preferably, as an preferred embodiment, the lower surface of the hook buffer section 11 is mirror-symmetrical to the upper surface of the hook buffer section 11, that is, the lower surface of the hook buffer section 11 is also an inclined surface.

[0040] During the process of the pin 8 passing through the first zipper pull 1, the hook buffer section 11 first contacts the hook 9. Since the hook buffer section 11 is set as an inclined surface, the hook 9 gradually lifts up under the action of the inclined surface. Compared with the existing structure, firstly, the position where the hook 9 first contacts the pin is the tail of the pin 8. Since the thickness of the tail end is the smallest, the force when the hook 9 and the pin 8 first come into contact is greatly reduced. Secondly, during the process of the first zipper pull 1 contacting the pin 8, the force of the pin 8 on the hook 9 gradually increases, and the pin 8 slowly lifts the hook 9. The resistance growth process is relatively smooth throughout the process. Compared with the existing conventional pin, the interference on the hook is smaller, and the user can more easily insert the pin 8 to complete the zipper closure. The feel when inserting the pin 8 is better.

[0041] Implementation Method 3:

[0042] like Figure 7 , Figure 8 and Figure 9 As shown, this embodiment is largely the same as embodiment two, except that the upper surface of the hook buffer section 11 is curved. Preferably, in this embodiment, the upper surface of the hook buffer section 11 is a downwardly concave curved surface. The first half of the curved surface has a relatively gentle rise in height, and the second half of the curved surface has a relatively steep rise in height. During the first half of the process when the first zipper 1 and the pin 8 just come into contact, the hook 9 of the first zipper 1 contacts the first half of the curved surface. At this time, the resistance experienced by the hook 9 of the first zipper 1 is maintained at a small level, and the user can more quickly insert the pin 8 into the first zipper 1 and the second zipper 2 and complete the alignment of the first zipper 1 and the second zipper 2, thereby completing the zipper closure.

[0043] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing these embodiments and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0044] The above embodiments and accompanying drawings are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A double-opening zipper, comprising a first zipper head, a second zipper head, a first zipper belt, and a second zipper belt, wherein the first zipper belt comprises a first zipper tooth row and a socket arranged sequentially on the same straight line, and the second zipper belt comprises a second zipper tooth row and a pin arranged sequentially on the same straight line; At least the first zipper has a hook, the first zipper and the second zipper are slidably disposed on the first chain teeth, and the first zipper is located between the second zipper and the socket; The side where the first and second chain teeth face each other is the inner side, the side where the first and second chain teeth are opposite to each other is the outer side, the side where the pin engages with the hook is the upper side, the side where the pin is opposite to the hook is the lower side, and the end of the pin furthest from the second chain teeth is the tail end. The characteristic feature is that: The pin includes a hook buffer section that engages with the hook. The hook buffer section is located at the tail of the pin, and the upper surface of the hook buffer section is positioned lower than the upper surface of the pin, which is located away from the other parts of the pin.

2. A zipper as described in claim 1, characterized in that: The socket is provided with a positioning block on the outside. The positioning block cooperates with the fabric seam of the first zipper and the fabric seam of the second zipper. When the positioning block is simultaneously inserted through one side of the fabric seam of the first zipper and one side of the fabric seam of the second zipper, the other side of the fabric seam of the first zipper and the other side of the fabric seam of the second zipper are located on the same plane.

3. A zipper as described in any one of claims 1 or 2, characterized in that: The upper surface of the pin has a stepped structure, and the recessed part of the stepped structure is the upper surface of the hook buffer section.

4. A zipper as described in claim 3, characterized in that: When the hook passes directly above the hook buffer section, the hook does not come into contact with the hook buffer section.

5. A zipper as described in claim 1 or 2, characterized in that: The upper surface of the hook buffer section is an inclined surface.

6. A zipper as described in claim 5, characterized in that: The lower surface of the hook buffer section is also an inclined surface.

7. A zipper as described in claim 6, characterized in that: The inclined plane is a straight plane.

8. A zipper as described in claim 6, characterized in that: The inclined plane is a curved surface.

9. A zipper as described in claim 8, characterized in that: The surface is a downwardly concave surface.

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