U-shaped airtight zipper

Abstract

The utility model discloses a U-shaped airtight zipper which comprises two cloth belt bodies which are arranged in a bilateral symmetry mode, zipper teeth which are meshed with each other are arranged on the side, facing the other cloth belt body, of any cloth belt body, and sealing rubber strips which abut against each other are arranged on the side, facing the other cloth belt body, of any cloth belt body. The cloth belt body comprises a polyester cloth belt and a polyurethane coating; the cloth belt body is composed of a non-bent-section cloth belt and a bent-section cloth belt, and cutting grooves which are arranged at intervals along the extending track of the bent-section cloth belt and enable the bent-section cloth belt to be freely bent in the horizontal plane are cut in the bent-section cloth belt. The area of the zipper formed at the cloth belt of the bent section can be used as a window for opening and closing, and opening and closing are convenient; the zipper is also in a preset form in a natural state, so that the zipper is convenient to install while good airtight performance is guaranteed, the overall function is complete, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of zipper manufacturing, and more specifically, to a U-shaped airtight zipper. Background Art

[0002] In order to ensure that the airtight zipper has good airtight performance, an anti-permeation coating is usually provided on the fabric tape. Due to the addition of the coating, it is difficult for the fabric tape to bend in the plane coplanar with it. Even if the bending is completed, it will be reset when the external force is removed, so that the effect of complete shaping cannot be achieved. There are limitations in use and the overall effect is not good. Based on this, the utility model proposes a U-shaped airtight zipper. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a U-shaped airtight zipper.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model involves a U-shaped airtight zipper, comprising two cloth tape bodies arranged symmetrically on the left and right, and the side of any of the cloth tape bodies facing the other cloth tape body is arranged with mutually meshing chain teeth, and the side of any of the cloth tape bodies facing the other cloth tape body is provided with mutually abutting sealing strips, characterized in that the cloth tape body comprises a polyester cloth tape and a polyurethane coating; the cloth tape body is composed of a non-bending section of cloth tape and a bending section of cloth tape, and the bending section of cloth tape is cut with grooves arranged at intervals along its extension trajectory and allowing it to be freely bent in a horizontal plane.

[0005] The utility model is further configured as follows: the cutting groove extends radially along the curved section of the cloth belt.

[0006] The utility model is further configured as follows: the cutting groove is in a straight strip shape.

[0007] The utility model is further configured as follows: the radius of the curved section of the cloth tape is R, the length of the groove is L, the width of the groove is W, the spacing between two adjacent grooves is X; L:W=40:1; L:X=2.5-3:1; R:L=18-19:1.

[0008] The utility model is further configured as follows: the sealing strip is made of polyurethane material.

[0009] The utility model is further configured as follows: the sealing strip and the polyurethane coating are integrated.

[0010] In summary, the utility model has the following beneficial effects: the U-shaped airtight zipper involved in the present invention, the area formed at the curved section of the cloth tape can be used as a window for opening and closing, and is easy to open and close; the zipper is also in a preset shape in a natural state, which ensures good airtight performance while being easy to install, with complete overall functions and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a cross-sectional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0013] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0014] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0015] Example 1

[0016] See also Figure 1 and Figure 2 As shown, a U-shaped airtight zipper involved in this embodiment includes two tape bodies 1 that are symmetrically arranged on the left and right, and mutually meshing chain teeth 2 are arranged on the side of any tape body 1 facing the other tape body, and mutually abutting sealing strips 3 are arranged on the side of any tape body 1 facing the other tape body. The tape body 1 includes a polyester tape 101 and a polyurethane coating 102; the tape body 1 is composed of a non-bending tape segment 11 and a bending tape segment 12, and the bending tape segment 12 is cut with grooves 13 that are arranged at intervals along its extension trajectory and allow it to be freely bent in a horizontal plane.

[0017] Furthermore, the cut groove 13 extends radially along the curved section of the fabric tape 12 .

[0018] Furthermore, the cutting groove 13 is in a straight strip shape.

[0019] Furthermore, the radius of the curved section of the tape 12 is R, the length of the groove 13 is L, the width of the groove 13 is W, and the spacing between two adjacent grooves 13 is X; L:W=40:1; L:X=2.5-3:1; R:L=18-19:1.

[0020] Furthermore, the sealing strip 3 is made of polyurethane material; the sealing strip 3 and the polyurethane coating 102 are integrated.

[0021] In this embodiment, by setting the cut groove 13 to extend radially along the curved section of the cloth tape 12 and setting the shape to be a straight strip, it is helpful to use a laser cutting device to complete the processing of the cut groove 13.

[0022] Among them, by setting the radius of the curved section of the tape 12 to R, the length of the groove 13 to L, the width of the groove 13 to W, and the spacing between two adjacent grooves 13 to X, and making L:W=40:1; L:X=2.5~3:1; R:L=18~19:1, the curved section of the tape 12 cut with this proportion relationship can successfully complete the in-plane bending, which is beneficial to the subsequent heat setting process.

[0023] The abutting sealing strips 3 are used to seal the tape body 1 after the fastener teeth 2 are engaged.

[0024] The U-shaped airtight zipper involved in the utility model can be used as a window for opening and closing in the area formed at the curved section of the cloth tape, and is easy to open and close; the zipper is also in a preset shape in a natural state, which ensures good airtight performance while being easy to install, with complete overall functions and strong practicality.

[0025] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0026] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A U-shaped airtight zipper, comprising two symmetrically arranged cloth tape bodies, one side of the cloth tape body facing the other cloth tape body is provided with mutually meshing chain teeth, and one side of the cloth tape body facing the other cloth tape body is provided with mutually abutting sealing strips, characterized in that: The cloth belt body comprises a polyester cloth belt and a polyurethane coating; the cloth belt body consists of a non-bending cloth belt segment and a bending cloth belt segment, and the bending cloth belt segment is cut with grooves arranged at intervals along its extension track and allowing it to be freely bent in a horizontal plane.

2. The U-shaped airtight zipper according to claim 1, characterized in that: The cutting groove extends radially along the curved section of the cloth belt.

3. The U-shaped airtight zipper according to claim 2, characterized in that: The cutting groove is in the shape of a straight strip.

4. The U-shaped airtight zipper according to claim 3, characterized in that: The radius of the curved section of the tape is R, the length of the groove is L, the width of the groove is W, and the spacing between two adjacent grooves is X; L:W=40:1; L:X=2.5-3:1; R:L=18-19:

1.

5. The U-shaped airtight zipper according to claim 4, characterized in that: The sealing strip is made of polyurethane material.

6. The U-shaped airtight zipper according to claim 5, characterized in that: The sealing strip is integrated with the polyurethane coating.

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