Plastic puller

Abstract

The utility model relates to a plastic puller which comprises an upper ship plate, a lower ship plate and a branch core column connected between the upper ship plate and the lower ship plate, the upper ship plate, the lower ship plate and the branch core column are integrally formed by plastic materials in an injection molding mode, and a concave portion is arranged at any position of the lower ship plate, the branch core column or the connection position of the lower ship plate and the branch core column. The injection molding feeding port of the plastic pull head is located in the concave part, the injection molding feeding port is formed in the concave part, and after injection molding of the pull head is completed, residual material points can be hidden in the concave part, so that the residual material points are prevented from scraping hands or hooking thread residues of clothes.

Description

Technical Field

[0001] The utility model relates to the technical field of zippers, and more specifically to a plastic pull head. Background Art

[0002] According to different materials, zipper pull heads are divided into metal pull heads and plastic pull heads. Among them, plastic pull heads are generally injection molded through mold opening to complete product forming. Different from metal pull head products whose surface can adopt a polishing process to solve the problem of residual injection feeding points, the surface of plastic pull heads cannot be polished, so there are residual feeding points on plastic pull head products, and the residual feeding points will cause scratching of hands, snagging of clothing threads, and affect the appearance of products, etc. Content of the Utility Model

[0003] The purpose of the utility model is to provide a plastic pull head to solve the above problems.

[0004] The utility model adopts the following technical solutions:

[0005] A plastic pull head includes an upper boat plate, a lower boat plate, and a support core column connected between the upper boat plate and the lower boat plate. The upper boat plate, the lower boat plate, and the support core column are integrally injection molded from plastic material. Any one of the lower boat plate, the support core column, or the connection between the lower boat plate and the support core column is provided with a recessed part, and the injection feeding port of the plastic pull head is located in the recessed part.

[0006] Further, taking the pulling direction of the plastic pull head as the front-to-back direction, the recessed part is arranged on the front end face of the connection between the lower boat plate and the support core column.

[0007] Preferably, the length of the part where the recessed part extends to the support core column is less than one-third of the height of the support core column.

[0008] Preferably, the side view shape of the recessed part is a right angle shape or an obtuse angle shape.

[0009] Further, the plastic pull head is a self-locking pull head, and an installation seat and an installation hole for placing a horse hook are provided on the upper boat plate of the self-locking pull head.

[0010] Further, the plastic material of the plastic pull head is one of PBT material, PA66 material, PET material, and POM material.

[0011] Further, the plastic pull head is integrally injection molded by mixing one of PBT material, PA66 material, PET material, and POM material with glass fiber.

[0012] Preferably, the length of the glass fiber is 3 - 4 millimeters, and the diameter of the glass fiber is 13 micrometers.

[0013] As described above about the structure of the present utility model, compared with the prior art, the present utility model has the following advantages:

[0014] 1. By providing a recessed portion in the present utility model and arranging the injection molding inlet in the recessed portion, after the slider is injection molded, the residual material points will be hidden in the recessed portion, thus avoiding scratching hands and hooking the thread ends of clothes by the residual material points.

[0015] 2. The present utility model arranges the recessed portion on the front end face of the connection between the lower boat plate and the support core column. This design structure causes the least damage to the overall structural firmness and appearance integrity of the plastic slider, and it is not easy to contact the tape of the zipper itself or the thread ends of clothes, with strong concealment, and can further reduce the contact probability between the slider and the thread ends of clothes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model.

[0017] Figure 2 It is the top view of the utility model.

[0018] Figure 3 It is the bottom view of the utility model.

[0019] Among them, the reference numerals in the figure are: upper boat plate 10, mounting seat 11, mounting hole 12, lower boat plate 20, support core column 30, recessed portion 40. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following describes the specific embodiments of the embodiments of the present utility model with reference to the drawings.

[0021] Referring to Figures 1 to 3 , a plastic slider includes an upper boat plate 10, a lower boat plate 20, and a support core column 30 connected between the upper boat plate 10 and the lower boat plate 20. The plastic slider of the present utility model can be an ordinary plastic slider or a self-locking slider. In this embodiment, it is preferably a self-locking slider. Two mounting seats 11 for placing the self-locking slider hooks are arranged at intervals along the length direction of the upper boat plate 10 of the self-locking slider, and a mounting hole 12 for the hook to pass through is also provided on the upper boat plate 10. The structures and working principles of the hook, cap and their installations of the self-locking slider are conventional techniques in the art and will not be further described herein. In order to enhance the quality of this plastic slider, the plastic material of this implemented plastic slider can be any one of PBT material, PA66 material, PET material and POM material; or the plastic slider is injection molded by mixing one of PBT material, PA66 material, PET material and POM material with glass fiber. As a more preferred option, the glass fiber in this embodiment can be glass fiber with a length of 3 - 4 mm and a diameter of 13 microns.

[0022] Referring to Figure 1 and Figure 3, at least one of the lower boat plate 20, the support core column 30 or the connection between the lower boat plate 20 and the support core column 30 is provided with a recess 40, and the injection feeding port of the plastic pull head is located in the recess 40. By providing the recess 40 in the present utility model and arranging the injection feeding port in the recess 40, when the pull head is completed in injection molding, the residual material points will be hidden in the recess 40, thereby avoiding scratching hands and hooking the thread ends of clothes by the residual material points.

[0023] More specifically, taking the pulling direction of the pull head as the front end face, the recess 40 of the present utility model can be arranged at any one of the following: the front end face of the lower boat plate 20, the rear end face of the lower boat plate 20, the front end face of the support core column 30, and the front end face of the connection between the lower boat plate 20 and the support core column 30.

[0024] As a preference, referring to Figure 1 , in this embodiment, the recess 40 is arranged at the front end face of the connection between the lower boat plate 20 and the support core column 30. The length of the part where the recess 40 extends to the support core column 30 is less than one-third of the height of the support core column 30. The side view shape of the recess 40 is a right angle shape or an obtuse angle shape, and the obtuse angle shape is preferably selected in this embodiment.

[0025] Referring to Figure 1 , the design method of the connection between the lower boat plate 20 and the support core column 30 has more advantages compared with other setting positions. Specifically, arranging the recess 40 at the front end face of the connection between the lower boat plate 20 and the support core column 30 can make the recess 40 more concealed after the plastic pull head is assembled on the zipper, and this position is not easy to contact the cloth tape of the zipper itself or the thread ends of clothes during the whole zipping action of the zipper, thereby improving the aesthetics of the appearance of the pull head and further avoiding the contact probability between the pull head and the thread ends of clothes.

[0026] In addition, referring to Figure 1 and Figure 2 , the setting positions of the lower boat plate 20 and the support core column 30 are also preferred for the injection feeding port of the plastic pull head. Especially when the plastic pull head in this embodiment is a self-locking pull head, since the upper boat plate 10 of the self-locking pull head needs to arrange the mounting seat 11 and the mounting hole 12, the structure of its upper boat plate 10 is complex. Therefore, the injection feeding port is preferably far away from the connection between the lower boat plate 20 and the support core column 30 of the upper boat plate 10, so that the flow of the plastic steel liquid during injection molding is more smooth and there is no dead angle.

[0027] Furthermore, arranging the recess 40 at the connection between the lower boat plate 20 and the support core column 30 causes the least damage to the overall structural firmness and appearance integrity of the plastic pull head. Especially preferably in this embodiment, the length of the part of the recess 40 located on the support core column 30 is limited to less than one-third of the overall height of the support core column 30, thereby ensuring the structural stability of the plastic pull head.

[0028] The above are only the specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantive modification made to the present utility model using this concept shall fall within the act of infringing the protection scope of the present utility model.

Claims

1. A plastic slider, comprising an upper shipboard, a lower shipboard and a support column connected between the upper shipboard and the lower shipboard, characterized in that: The upper deck, lower deck and supporting core column are integrally formed by injection molding of plastic material, and any one of the lower deck, supporting core column or the connection between the lower deck and the supporting core column is provided with a recessed portion, and the injection molding feed port of the plastic pull head is located in the recessed portion.

2. A plastic slider according to claim 1, characterized in that: With the pulling direction of the plastic pull head as the front end direction, the recessed portion is arranged on the front end surface of the connection between the lower ship plate and the supporting core column.

3. A plastic slider according to claim 2, characterized in that: The length of the portion of the recessed portion extending to the support stem is less than one third of the height of the support stem.

4. A plastic slider according to claim 2, characterized in that: The side view shape of the recessed portion is a right angle shape or an obtuse angle shape.

5. The plastic slider according to claim 1, characterized in that: The plastic slider is a self-locking slider, and a mounting seat and a mounting hole for placing a horse hook are provided on the upper board of the self-locking slider.

6. The plastic slider according to claim 1, characterized in that: The plastic material of the plastic slider is one of PBT material, PA66 material, PET material and POM material.

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