Reversely-worn mother-child nylon zipper

Abstract

The utility model discloses a reverse-penetrating type mother-child nylon zipper which comprises an outer-layer mother zipper belt and an inner-layer child zipper belt, mother zipper teeth and child zipper teeth are arranged on the outer-layer mother zipper belt and the inner-layer child zipper belt respectively, reverse-penetrating type double-layer zipper pullers are arranged on the mother zipper teeth and the child zipper teeth, and each double-layer zipper puller comprises an outer-layer top plate, a middle-layer partition plate and an inner-layer bottom plate. Telescopic connecting pieces are arranged in the middle positions between the outer-layer top plate and the middle-layer partition plate as well as between the middle-layer partition plate and the inner-layer bottom plate; upper side plates are arranged at the two ends below the outer-layer top plate, middle side plates are arranged on the upper sides and the lower sides of the two ends of the middle-layer partition plate, lower side plates are arranged at the two ends above the inner-layer bottom plate, and roller shafts rolling in the pulling-closing direction are arranged on the end faces of the upper side plates, the middle side plates and the lower side plates. On one hand, the zipper is convenient to pull and close (effectively reduces the jamming phenomenon), and on the other hand, the abrasion to the zipper belt can be reduced.

Description

Technical Field

[0001] The utility model relates to a reverse-wearing nylon zipper, in particular to a reverse-wearing mother-child nylon zipper. Background Art

[0002] Reverse-through nylon zipper, also called back-through, is relative to the normal pull head method. Forward-through means that the zipper teeth are on the front side, and the zipper teeth and the zipper head are on the same side, while reverse-through means that the zipper teeth are on the back side, and the zipper teeth and the zipper head are not on the same side. Reverse-through mother-and-child nylon zipper refers to a double-layer mother-and-child zipper and a two-layer zipper head in a reverse-through structure. Since the double-layer mother-and-child zipper is composed of two layers of inner and outer chain belts, the lower chain belt is smaller than the upper chain belt, forming a double-layer mother-and-child zipper with a larger upper layer and a smaller lower layer. The upper and lower chain belts are opened and closed with two layers of zipper heads formed in one piece. However, the existing double-layer zipper head requires the inner and outer chain teeth to be pulled together at the same time, so the pulling and closing process is more laborious and prone to jamming; and since the friction force on the chain belt is large during the pulling and closing process, it is also easy to wear the chain belt. Therefore, the existing technology has the problem of easy jamming and easy wear of the chain belt. Utility Model Content

[0003] The purpose of the utility model is to provide a reverse-type mother-child nylon zipper. The utility model is convenient for pulling and closing (effectively reducing the occurrence of jamming phenomenon) on the one hand, and can reduce the wear of the chain belt on the other hand.

[0004] The technical solution of the utility model is as follows: a reverse-wearing mother-child nylon zipper, comprising an outer mother chain belt and an inner child chain belt, the outer mother chain belt and the inner child chain belt are respectively provided with mother chain teeth and child chain teeth, the mother chain teeth and the child chain teeth are provided with a reverse-wearing double-layer zipper head, the double-layer zipper head comprises an outer top plate, a middle partition plate and an inner bottom plate, and telescopic connecting parts are provided in the middle positions between the outer top plate and the middle partition plate, and between the middle partition plate and the inner bottom plate; upper side plates are provided at both ends below the outer top plate, middle side plates are provided on the upper and lower sides of both ends of the middle partition plate, lower side plates are provided at both ends above the inner bottom plate, and the end faces of the upper side plate, the middle side plate and the lower side plate are provided with rollers that roll along the pulling and closing direction.

[0005] In the aforementioned reverse-wearing mother-child nylon zipper, the telescopic connector includes a plurality of telescopic rods arranged side by side, and telescopic springs are sleeved on the telescopic rods; it also includes a base located on the front and rear sides of the telescopic rods, and the base is provided with an opening close to the chain tooth side, and a vertical roller is provided in the opening, and the vertical roller and the base move relative to each other; the base is fixed to the upper surface of the middle partition plate or the upper surface of the inner bottom plate, and the upper end of the vertical roller is fixed to the inner top surface of the outer top plate or the lower surface of the middle partition plate.

[0006] In the aforementioned reverse-wearing mother-child nylon zipper, the opening is a groove opening with a cross section of two-thirds of a circular surface, and the side end surface of the vertical roller is exposed from the groove opening.

[0007] In the aforementioned reverse-wearing mother-child nylon zipper, the surface of the vertical roller is coated with a wear-resistant layer.

[0008] Compared with the prior art, the present invention, on the one hand, provides telescopic connectors between the outer top plate and the middle partition plate, and between the middle partition plate and the inner bottom plate, so that the gap can be adjusted according to the actual closing and pulling gap, effectively avoiding the phenomenon that the zipper head is stuck and cannot move; secondly, rollers are provided on the end faces of the upper side plate, the middle side plate, and the lower side plate, so that the contact between the zipper head and the chain belt is changed to rolling friction, thereby effectively reducing the friction between the chain belt and the chain belt, which can not only further facilitate closing and pulling, but also reduce the friction and wear on the chain belt. In summary, the present invention is easy to close and pull (effectively reducing the occurrence of jamming) on ​​the one hand, and can reduce the wear on the chain belt on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 It is a partial view of the fit between the base and the vertical roller.

[0011] The markings in the accompanying drawings are: 1-outer mother chain belt, 2-inner child chain belt, 3-mother chain tooth, 4-child chain tooth, 5-double-layer zipper head, 501-outer top plate, 502-middle partition plate, 503-inner bottom plate, 504-telescopic connector, 505-upper side plate, 506-middle side plate, 507-lower side plate, 508-roller, 541-telescopic rod, 542-telescopic spring, 543-opening, 544-vertical roller, 545-base. DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0013] Embodiment. A reverse-type mother-child nylon zipper, comprising: Figure 1-2As shown, it includes an outer mother chain belt 1 and an inner child chain belt 2, and the outer mother chain belt 1 and the inner child chain belt 2 are respectively provided with a mother chain tooth 3 and a child chain tooth 4, and the mother chain tooth 3 and the child chain tooth 4 are provided with a reverse-wearing double-layer zipper head 5, and the double-layer zipper head 5 includes an outer top plate 501, a middle partition plate 502 and an inner bottom plate 503, and a telescopic connecting piece 504 is provided in the middle position between the outer top plate 501 and the middle partition plate 502, and between the middle partition plate 502 and the inner bottom plate 503; upper side plates 505 are provided at both ends below the outer top plate 501, middle side plates 506 are provided on the upper and lower sides of both ends of the middle partition plate 502, and lower side plates 507 are provided at both ends above the inner bottom plate 503, and the end surfaces of the upper side plate 505, the middle side plate 506 and the lower side plate 507 are provided with rollers 508 that roll along the pulling direction.

[0014] The telescopic connecting member 504 includes a plurality of telescopic rods 541 arranged side by side, and a telescopic spring 542 is sleeved on the telescopic rod 541; it also includes a base 545 located on the front and rear sides of the telescopic rod 541, and the base 545 is provided with an opening 543 close to the chain tooth side, and a vertical roller 544 is provided in the opening 543, and the vertical roller 544 and the base 545 move relative to each other; the base 545 is fixed to the upper surface of the middle partition 502 or the upper surface of the inner bottom plate 503, and the upper end of the vertical roller 544 is fixed to the inner top surface of the outer top plate 501 or the lower surface of the middle partition 502.

[0015] The opening 543 is a groove opening with a cross section of two-thirds of a circular surface, and the side end surface of the vertical roller shaft 544 is exposed from the groove opening.

[0016] The surface of the vertical roller 544 is coated with a wear-resistant layer.

[0017] The arrangement of the telescopic rod is used to limit the adjustment between the outer top plate and the middle partition plate, and between the middle partition plate and the inner bottom plate within a certain range.

[0018] The opening is set as a groove with a cross section of two-thirds of a circular surface. The diameter of the groove matches the vertical roller shaft, which can not only limit and position the vertical roller shaft, but also expose the groove mouth to the outer end face of the vertical roller shaft, so as to facilitate its rolling function.

[0019] The vertical roller can move up and down along the vertical direction of the opening.

[0020] The telescopic connector is located between the outer top plate and the middle partition plate, the base is fixed to the upper end surface of the middle partition plate, and the rotating shaft end of the upper end of the vertical roller is fixed to the lower surface of the outer top plate.

[0021] The telescopic connector is located between the middle-layer partition and the inner-layer bottom plate, wherein the base is fixed to the upper surface of the inner-layer bottom plate, and the rotating end of the upper end of the vertical roller is fixed to the lower surface of the middle-layer partition.

[0022] The telescopic process of the telescopic connector (taking the telescopic connector between the outer top plate and the middle partition as an example): the telescopic spring is initially in a contracted state. When the chain becomes thicker during movement, the telescopic spring will be stretched, and the telescopic rod will be lengthened, prompting the gap between the outer top plate and the middle partition, as well as the upper side plate and the middle side plate to be adjusted to meet the passing requirements and reduce jamming. At the same time, the cooperation between the vertical roller and the base will also move up and down to adapt to the adjustment of the gap; by setting up the vertical roller and the base, on the one hand, the telescopic rod and telescopic spring located on the inside are protected to prevent them from contacting the chain teeth, and on the other hand, the side end face of the vertical roller exposes a groove, which is in rolling contact with the chain teeth, reducing friction and reducing wear on the zipper.

[0023] The opening and closing process of the double-layer zipper head: the user pulls the double-layer zipper head to move along the inner sub-chain belt and the sub-chain teeth on the outer mother chain belt. During the movement, the outer mother chain belt is located in the area between the outer top plate and the middle partition, and the inner sub-chain belt is located in the area between the middle partition and the inner bottom plate. When encountering obstacles on the chain belt or areas where the chain belt thickness becomes thicker, the telescopic connector will adjust the gap between the outer top plate and the middle partition or the middle partition and the inner bottom plate accordingly to meet the passing gap of the double-layer zipper head, effectively reducing the jamming phenomenon; and during the movement, the roller is in rolling contact with the outer mother chain belt and the inner sub-chain belt, which can effectively reduce friction and improve durability.

Claims

1. A reverse-wearing mother-child nylon zipper, comprising an outer mother chain belt (1) and an inner child chain belt (2), wherein the outer mother chain belt (1) and the inner child chain belt (2) are respectively provided with mother chain teeth (3) and child chain teeth (4), and the mother chain teeth (3) and the child chain teeth (4) are provided with reverse-wearing double-layer zipper heads (5), characterized in that: The double-layer zipper head (5) comprises an outer top plate (501), a middle partition plate (502) and an inner bottom plate (503); a telescopic connecting piece (504) is provided at the middle position between the outer top plate (501) and the middle partition plate (502), and between the middle partition plate (502) and the inner bottom plate (503); upper side plates (505) are provided at both ends below the outer top plate (501); middle side plates (506) are provided at both ends above and below the two ends of the middle partition plate (502); lower side plates (507) are provided at both ends above the inner bottom plate (503); and end surfaces of the upper side plate (505), the middle side plate (506) and the lower side plate (507) are provided with rollers (508) that roll along the pulling direction.

2. A reverse-type mother-child nylon zipper according to claim 1, characterized in that: The telescopic connecting member (504) comprises a plurality of telescopic rods (541) arranged in parallel, and a telescopic spring (542) is sleeved on the telescopic rod (541); and further comprises a base (545) located at the front and rear sides of the telescopic rod (541); the base (545) is provided with an opening (543) close to the chain tooth side, and a vertical roller (544) is provided in the opening (543); and the vertical roller (544) and the base (545) move relative to each other; the base (545) is fixed to the upper surface of the middle layer partition (502) or the upper surface of the inner layer bottom plate (503), and the upper end of the vertical roller (544) is fixed to the inner top surface of the outer layer top plate (501) or the lower surface of the middle layer partition (502).

3. A reverse-type mother-child nylon zipper according to claim 2, characterized in that: The opening (543) is a groove opening with a cross section of two-thirds of a circular surface, and the side end surface of the vertical roller (544) is exposed from the groove opening.

4. A reverse-type mother-child nylon zipper according to claim 2, characterized in that: The surface of the vertical roller (544) is coated with a wear-resistant layer.

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