A pull head for a zipper

Abstract

The present invention discloses a slider for a zipper, belonging to the technical field of zippers. It includes a slider body and a pull tab. The pull tab has a connecting shaft. An installation part for installing the connecting shaft of the pull tab is provided on the top surface of the slider body. The installation part has a receiving hole. At least one support structure is provided on both sides of the top surface of the slider body along the axial direction of the receiving hole. The connecting shaft is inserted into the receiving hole. The support structure and / or the connecting shaft are made of elastic materials, and the outer surface wall of the connecting shaft is always in contact with the inner wall of the upper middle part of the receiving hole and the top surface of the support structure, so that the connecting shaft maintains a stable state at any angle. For the slider of the present invention, the inner wall of the upper middle part of the connecting hole exerts a force on the connecting shaft, and the support structure generates a damping force on the connecting shaft. The two interact to support the pull tab, thereby ensuring that the pull tab can maintain a stable state when rotated to any angle and preventing the pull tab from shaking with the movement of the user.

Description

Technical Field

[0001] The present invention relates to the technical field of zippers, and more specifically to a pull head for a zipper. Background Art

[0002] As a common item in life, a zipper mainly consists of chain teeth, a pull head, a limit code, and a locking member, and the pull head includes a pull tab and a pull head body. When using a zipper, it mainly drives the movement of the pull head body by pulling the pull tab to achieve the opening and closing of the chain teeth, thereby realizing the use function of the zipper, and is widely used in clothing, luggage, and tents.

[0003] Currently, for the pull heads of most sports clothing on the market, the pull tabs usually cannot be fixed and attached to the surface of the pull head body or maintain a stable included angle state with the pull head body. When the user is exercising, the pull tab will shake with the movement of the user, generating abnormal noises or warping and other phenomena, which greatly affects the user's exercise experience.

[0004] To solve the above problems, a Chinese utility model patent with the authorization announcement number of CN 204467142U discloses a concealed pull head, including a pull seat, a code hook, an elastic member, and a pull tab. The code hook is installed on the pull seat; the elastic member is installed between the tail of the pull seat and the tail of the code hook; the pull tab is connected to the code hook, and the length of the front end of the pull tab located between the code hook and the pull seat is greater than the distance between the inner side of the code hook and the upper surface of the pull seat; the pull seat has a clamping hole for accommodating the hooked end of the code hook, and the elastic member is always in a compressed state. This patent uses the code hook to press down into the clamping hole to press the pull tab tightly, and is only applicable to the concealed pull head with the structure of the code hook and the elastic member. For a pull head without a stop, this patent solution obviously cannot press the pull tab tightly to avoid its shaking. Therefore, we provide a pull head for a zipper. Summary of the Invention

[0005] The present invention provides a pull head for a zipper, and its main purpose is to overcome the defects that the existing pull head uses the code hook to press into the clamping hole to press the pull tab tightly, and cannot keep the pull tab of the pull head without a stop stable at any angle without shaking.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A slider for a zipper, comprising a slider body and a pull tab. The pull tab has a connecting shaft. An installation portion for installing the connecting shaft of the pull tab is provided on the top surface of the slider body. The installation portion has a receiving hole. At least one support structure higher than the top surface of the slider body is provided on each side of the top surface of the slider body along the axial direction of the receiving hole. The connecting shaft is inserted through the receiving hole. The support structure and / or the connecting shaft is made of an elastic material, and the outer wall of the connecting shaft is always in contact with the inner wall of the upper middle part of the receiving hole and the support structure, so that the connecting shaft maintains a stable state at any angle.

[0008] In a preferred embodiment, two tooth portions are provided at intervals along the central axis direction on the top surface of the slider body. The tops of the two tooth portions are bent and butted towards each other, and the top surface of the slider body between the two tooth portions forms the receiving hole. The support structure is a strip-shaped support bar.

[0009] In a preferred embodiment, the cross-section of the connecting shaft at the position corresponding to the tooth portion is circular, and the outer wall of the connecting shaft is respectively in internal tangency with the bent inner walls of the two tooth portions.

[0010] In a preferred embodiment, one support bar is provided on each side of the top surface of the slider body along the axial direction of the receiving hole. The distance between the two support bars is greater than the width of the tooth portion, and both support bars are perpendicular to the axial direction of the receiving hole.

[0011] In a preferred embodiment, an installation groove is opened at the bottom of the receiving hole, and a support member is fixedly provided on the installation groove. A convex portion is provided on each side of the support member to form the support bar.

[0012] In a preferred embodiment, a positioning protrusion is provided at the center of the bottom surface of the installation groove, and a positioning hole is correspondingly provided at the bottom of the support member for fitting and sleeving on the positioning protrusion.

[0013] In a preferred embodiment, a positioning hole is provided at the center of the bottom surface of the installation groove, and a positioning protrusion is provided at the bottom of the support member for fitting and connecting to the positioning hole.

[0014] In a preferred embodiment, a limiting convex strip is provided on each side of the installation groove, and a step groove for correspondingly supporting on the limiting convex strip is provided on each side of the bottom surface of the support member.

[0015] In a preferred embodiment, the support member is made of resin, the pull tab is a resin pull tab, or the pull tab is a metal pull tab with an axial portion coated with resin.

[0016] In a preferred embodiment, the slider is a non-stop invisible slider.

[0017] As can be seen from the above description of the structure of the present invention, compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. For the slider of this invention, a receiving hole for receiving the connecting shaft of the pull tab is provided on the top surface of the slider body, and the inner wall of the upper middle part of the receiving hole and the top surface of the supporting structure are always in contact with the corresponding outer wall of the connecting shaft. Since the supporting structure and / or the connecting shaft are made of elastic materials, the inner wall of the upper middle part of the receiving hole exerts a force on the connecting shaft and the supporting structure generates a damping force on the connecting shaft. The two interact to support the pull tab, thereby ensuring that the pull tab can maintain a stable state at any rotated angle and preventing the pull tab from shaking with the movement of the user. This structure is simple and easy to manufacture, and is applicable to sliders without positions.

[0019] 2. For the slider of this invention, since the supporting structures on both sides of the receiving hole are higher than the top surface of the slider body, that is, higher than the upper deck of the slider body. Compared with the structure where the receiving hole and the upper deck squeeze the connecting shaft of the pull tab, when the connecting shaft of the pull tab rotates, the raised supporting structure and the inner wall of the upper part of the receiving hole (i.e., two tooth parts) support the connecting shaft of the pull tab, and the effect that the pull tab can maintain a stable state at any rotated angle can be achieved without large deformation of the tooth parts.

[0020] 3. For the slider of this invention, support bars are respectively arranged on both sides of the receiving hole to cooperate with the tooth parts to squeeze the connecting shaft of the pull tab, so that the connecting shaft of the pull tab is stressed at three or more non - collinear positions, thereby making the support of the connecting shaft of the pull tab more stable.

[0021] 4. For the slider of this invention, the support member is sleeved on the positioning protrusion of the installation part through the bottom positioning hole. It is not only convenient to install, but also when the support bar on the support member is damaged, only the support member can be replaced, reducing the use cost of the slider and improving the utilization rate of the slider.

[0022] 5. For the slider of this invention, the support member is made of resin material, which can increase the damping force between the outer surfaces of the two raised parts, i.e., the support bars, and the connecting shaft of the pull tab, and improve the stability of its support for the pull tab. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the front view before assembly of the first embodiment of the present invention.

[0024] Figure 2 It is the exploded view of the first embodiment of the present invention.

[0025] Figure 3 It is the front view after assembly of the first embodiment of the present invention.

[0026] Figure 4 It is the exploded view of the second embodiment of the present invention.

[0027] Figure 5 This is the front view after assembly for the second embodiment of the present invention.

[0028] Figure 6 This is a schematic structural view of the slider body for the third embodiment of the present invention.

[0029] Figure 7 This is a schematic structural view of the support member for the third embodiment of the present invention.

[0030] Figure 8 This is a schematic structural view of the slider body for the fourth embodiment of the present invention.

[0031] Figure 9 This is a schematic structural view of the support member for the fourth embodiment of the present invention. Detailed implementation manners

[0032] The following describes the detailed implementation manners of the present invention with reference to the accompanying drawings. To fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details.

[0033] Embodiment 1

[0034] This embodiment provides a slider for a zipper. The slider is an invisible non-stop slider. Referring to Figures 1 to 3 , it includes a slider body 10 and a pull tab 20. Among them, two tooth portions 11 are provided at intervals along the central axis direction on the top surface of the slider body 10, and the two tooth portions 11 are symmetrically structured. The tops of the two tooth portions 11 are respectively bent and butted towards each other and form a receiving hole 12 with the top surface of the slider body 10 between the two tooth portions 11.

[0035] Referring to Figure 2 , a square hole 21 for the tooth portion 11 to pass through is provided at the lower part of the above-mentioned pull tab 20. Arm portions 22 are provided on both sides of the square hole 21, and the two arm portions 22 extend along the upper part of the pull tab to form a lifting portion. A connecting shaft 23 is further provided at the bottom of the square hole 21, and the connecting shaft 23 penetrates through the other side of the receiving hole 12 from one side in the axial direction of the receiving hole 12. The axial direction of the receiving hole 12 is perpendicular to the central axis of the slider body in the plane.

[0036] Referring to Figure 2 and Figure 3 , at least one support structure higher than the top surface of the slider body 10 is respectively provided on both sides of the top surface of the slider body 10 in the axial direction of the receiving hole 12. In this embodiment, the support structure is a strip-shaped support bar 13. Preferably, the above-mentioned support structure can also be a columnar body with a triangular or circular horizontal cross-section, and the above-mentioned support structure can also be other irregular bodies protruding. The outer wall of the connecting shaft 23 always abuts against the inner wall of the upper middle part of the receiving hole 12 and the top surface of the support bar 13, so that the connecting shaft 23 maintains a stable state at any angle.

[0037] In this embodiment, a support bar 13 is provided on each of the two sides of the accommodating hole 12 in the axial direction. The projection of the support bar 13 in the axial direction of the accommodating hole 12 coincides with the axial accommodating hole 12, and the two support bars 13 are symmetrically arranged on the two sides of the accommodating hole 12 in the axial direction. Of course, in other embodiments, among the two side surfaces of the top surface of the slider body 10 on both sides of the axis of the accommodating hole 12, one side surface can be provided with one support bar 13, and the other side can be provided with two or more support bars 13; it can also be that both side surfaces are provided with two or more support bars 13. In addition, the support bars 13 provided on the two side surfaces can be of a symmetric structure or an asymmetric structure.

[0038] Refer to Figure 2 and Figure 3 , in this embodiment, the cross-section of the connecting shaft 23 at the position corresponding to the tooth portion 11 is circular, and the outer wall of the connecting shaft 23 is respectively tangent to the curved inner walls of the two tooth portions 11. Since different regions of the outer peripheral surface of the connecting shaft 23 are respectively tangent to the inner wall of the accommodating hole 12 and the support bar 13, and the cross-section of the connecting seat is circular, when the connecting shaft 23 rotates, its outer wall always keeps in contact with the inner wall of the accommodating hole and the support bar correspondingly.

[0039] At least one of the above-mentioned support bar 13 and the connecting shaft 23 is made of an elastic material. By applying a force to the connecting shaft 23 through the inner wall of the upper middle part of the accommodating hole 12 and generating a damping force on the connecting shaft by the outer surface of the support bar 13, the two act on each other to support the pull tab, so as to ensure that the pull tab can maintain a stable state when rotated to any angle. Moreover, when the pull tab connecting shaft rotates, the raised support bar and the upper inner walls of the accommodating hole (i.e., the two tooth portions) support the pull tab connecting shaft. Since the support bar 13 is higher than the top surface of the slider body, the support bar 13 arranged higher than the top surface of the slider body can provide support for the connecting shaft 23 at a position higher than the top surface of the slider body. Compared with the structure in which the top surface of the slider body provides support for the connecting shaft 23, the degree of deformation required for the tooth portion to bend to clamp the connecting shaft 23 is small, and the effect that the pull tab can maintain a stable state when rotated to any angle can be achieved without the tooth portion generating a large deformation.

[0040] In addition, since at least one support bar 13 is provided on each side of the top surface of the slider body 10 along the axial direction of the accommodation hole 12, the connecting shaft 23 is pressed by the support bars 13 on both sides of the tooth part, which not only enables the force on the pull tab to be in a relatively balanced state, ensuring the stability when the pull tab stops, but also makes the support of the connecting shaft 23 of the pull tab more stable axially compared to the conventional structure without the support bar 13. The specific reasons are as follows: In the conventional structure without the support bar 13, the force-bearing area of the connecting shaft 23 only includes the inner peripheral surface of the accommodation hole 12 in contact with the connecting shaft 23, and the area near the top surface of the slider body 10 corresponding to the connecting shaft 23 is only supported by one area, i.e., the inner peripheral surface of the bottom of the accommodation hole 12. In the height direction section where the connecting shaft 23 is located, the force-bearing points of the connecting shaft 23 are only at the upper and lower ends in contact with the accommodation hole 12. When an axial external force is applied to the pull tab 20, the connecting shaft 23 of the pull tab is prone to tilt, causing the pull tab 20 to be unstable. However, in the structure of this embodiment, the area where the connecting shaft 23 of the pull tab cooperates with the top surface of the slider body 10 is supported by the support bars 13 on both sides of the tooth part 11. The force-bearing positions of the connecting shaft 23 include a part of the inner side wall of the peripheral edge of the accommodation hole 12 and the two support bars 13. In this structure, the force-bearing points of the connecting shaft 23 of the pull tab are in a triangular structure in the height direction section where the connecting shaft 23 is located. The triangular force-bearing method is more stable than the force-bearing method at the upper and lower ends in the conventional structure and can better cope with the axial external force of the pull tab 20.

[0041] Referring to Figure 2 , the distance between the above two support bars 13 is greater than the width of the tooth part 11, so that there is a large distance between the two support bars 13 at the bottom of the connecting shaft 23, improving the support stability for the connecting shaft 23.

[0042] Embodiment 2

[0043] A slider for a zipper provided in this embodiment is also an invisible non-stop slider. Referring to Figure 4 and Figure 5 , it includes a slider body 10 and a pull tab 20. The pull tab 20 in this embodiment is exactly the same as the pull tab in Embodiment 1, and the difference lies in that the structure of the slider body 10 is partially different.

[0044] Referring to Figure 4 and Figure 5 , the slider body 10 in this embodiment also has two tooth parts 11. The tops of the two tooth parts 11 are bent towards each other and butted to form an accommodation hole 12. An installation groove 120 is opened at the bottom of the accommodation hole 12 in this embodiment, and a support member 30 is fixedly provided on the installation groove 120. A convex part 31 is provided on each side of the support member 30, forming two support bars.

[0045] Referring to Figure 4, on both sides of the installation groove 120, a limit rib 121 is respectively provided, and on both sides of the bottom surface of the support member 30, a step groove 32 respectively corresponding to support on the limit rib 121 is provided to prevent the support member 30 from moving on both sides of the installation groove 120.

[0046] In this embodiment, the support bar is mainly provided on a support member 30, so that the support bar can be made of some materials with greater damping to increase the acting force on the pull tab connecting shaft 23. In addition, the support member 30 is installed on the installation groove 120 in a limiting manner. When the support bar is damaged, only the support member 30 needs to be replaced, reducing the use cost of the pull head and improving the utilization rate of the pull head.

[0047] Embodiment Three

[0048] This embodiment is basically the same as Embodiment Two, and the difference lies in: referring to Figure 6 , at the center of the bottom surface of the installation groove 120 of the pull head body 10 in this embodiment, a positioning protrusion 122 is provided, and correspondingly at the bottom of the support member 30, a positioning hole 33 is provided to be fitted and sleeved on the positioning protrusion 122.

[0049] Referring to Figure 7 , Figure 7 In, the support member 30 is placed in a state of looking up, and its bottom surface faces upward. In this embodiment, a positioning hole 33 is provided on the bottom surface of the support member 30, and the positioning protrusion 122 installed on the bottom surface of the installation part is used to position the support member 30 longitudinally, preventing the support member 30 from jittering longitudinally due to the rotational action of the connecting shaft, thereby affecting the supporting force of the support bar and the upper inner wall of the accommodating hole on the connecting shaft.

[0050] Embodiment Four

[0051] This embodiment is basically the same as Embodiment Three, and the difference lies in: referring to Figure 8 and Figure 9 , at the center of the bottom surface of the installation groove 120 in this embodiment, a positioning hole 123 is provided, and at the bottom of the support member 30, a positioning protrusion 34 is provided to be fitted and connected to the positioning hole 123.

[0052] The support member 30 of the present invention is preferably made of resin, and the pull tab 20 is a resin pull tab, or the pull tab is a metal pull tab with a resin-coated shaft part.

[0053] The pull heads shown in the above embodiments are all non-stop invisible pull heads, but the pull head of the present invention is not limited to this, and it can also be an elephant nose or other non-stop pull heads.

[0054] The above is only the specific implementation manner of the present invention, but the design concept of the present invention is not limited to this. Any non-substantive modification made to the present invention using this concept shall fall within the scope of infringement of the protection of the present invention.

Claims

1. A slider for a zipper, comprising a slider body and a pull tab, the pull tab having a connecting shaft, Characterized in that: An installation part for installing the connecting shaft of the pull tab is arranged on the top surface of the slider body. The installation part has a receiving hole. On both sides of the receiving hole along the axial direction on the top surface of the slider body, at least one support structure higher than the top surface of the slider body is provided respectively. The connecting shaft is inserted through the receiving hole. The support structure and / or the connecting shaft are made of elastic material, and the outer wall of the connecting shaft is always in contact with the inner wall of the upper middle part of the receiving hole and the support structure, so that the connecting shaft maintains a stable state at any angle.

2. A slider for a zipper according to claim 1, Characterized in that: Two tooth parts are arranged at intervals along the central axis direction on the top surface of the slider body. The tops of the two tooth parts are bent and butted towards each other, and the top surface of the slider body between the two tooth parts forms the receiving hole. The support structure is a strip-shaped support bar.

3. A slider for a zipper according to claim 2, Characterized in that: The cross section of the connecting shaft at the position corresponding to the tooth part is circular, and the outer wall of the connecting shaft is respectively internally tangent to the bent inner walls of the two tooth parts.

4. A slider for a zipper according to claim 2, Characterized in that: A support bar is provided on each side of the top surface of the slider body along the axial direction of the receiving hole. The distance between the two support bars is greater than the width of the tooth part, and both support bars are perpendicular to the axial direction of the receiving hole.

5. A slider for a zipper according to claim 4, Characterized in that: An installation groove is opened at the bottom of the receiving hole, and a support member is fixedly arranged on the installation groove. A convex part is provided on each side of the support member to form the support bar.

6. A slider for a zipper according to claim 5, Characterized in that: A positioning protrusion is provided at the center of the bottom surface of the installation part, and a positioning hole is correspondingly provided at the bottom of the support member for fitting and sleeving on the positioning protrusion.

7. A slider for a zipper according to claim 5, Characterized in that: A positioning hole is provided at the center of the bottom surface of the installation groove, and a positioning protrusion is provided at the bottom of the support member for fitting and connecting to the positioning hole.

8. A slider for a zipper according to any one of claims 5 to 7, Characterized in that: A limiting convex strip is provided on each side of the installation groove, and a step groove for correspondingly supporting on the limiting convex strip is provided on each side of the bottom surface of the support member.

9. A slider for a zipper according to any one of claims 5 to 7, Characterized in that: The support member is made of resin.

10. A slider for a zipper according to claim 1, Characterized in that: The pull tab is a resin pull tab, or the pull tab is a metal pull tab with the shaft part coated with resin.

11. A slider for a zipper according to claim 1, Characterized in that: The slider is a non-stop invisible head.

Images