A heat shrinkable tube for insulating products resistant to high temperature and corrosion

By setting a wear-resistant layer on the outer layer of the heat shrink tube body and a cavity and arc-shaped cross-sectional heat insulation sheet on the inner layer, the tapered top fixing member and soft bonding edges are used to solve the problem of insufficient friction due to smooth surface of the existing heat shrink tube, and the good anti-slip, high temperature resistance and applicability of the heat shrink tube are achieved.

CN222702777UActive Publication Date: 2025-04-01DEEM ELECTRONIC&ELECTRIC MATERIAL CO LTD
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Patent Information

Application Number
CN202421266493.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-05
Publication Date
2025-04-01
Estimated Expiration
2034-06-05

AI Technical Summary

Technical Problem

The existing heat shrink tubes have relatively smooth surfaces due to the smooth surface of the molding process, resulting in less friction and it is difficult to meet the friction requirements of larger surfaces.

Method used

A high-temperature and corrosion-resistant insulated heat shrinkage tube is designed. By providing a wear-resistant layer on the outer layer of the heat shrinkage tube body, a cavity between the first and second heat shrinkage sleeves is provided on the inner layer, and a first and second arc-shaped cross-sectional heat insulation sheets, the friction and applicability of the heat shrinkage tube are improved by using a tapered top fixing member and a soft bonding edge.

Benefits of technology

Through the arrangement of the tapered top fixing member, the heat shrink tube forms multiple uniformly arranged protrusions on the surface after the heat shrinkage is completed, which improves the anti-slip capability; the alternating and close bonding of the arc-shaped cross-sectional heat insulation sheets form a high-temperature resistance layer, which improves the high-temperature resistance of the heat shrink tube; the soft bonding edge makes the heat shrink tube have good applicability to wire harnesses of different sizes.

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Patent Text Reader

Abstract

The utility model discloses a heat shrink tube for insulating products that is resistant to high temperature and corrosion, and relates to the field of heat shrink tubes. It aims to solve the problem that the existing heat shrink tubes in the prior art have relatively smooth surfaces due to the molding process. When the heat shrink tube is required to have a larger surface with greater friction, the existing heat shrink tube products are difficult to meet the requirements due to their smooth surface and small friction. The outermost layer of the heat shrink tube body is provided with a wear-resistant layer, the inner side of the wear-resistant layer is fixedly connected with a corrosion-resistant layer, the inner side of the corrosion-resistant layer is fixedly connected with a first heat shrink sleeve, the inner side of the first heat shrink sleeve is connected with a second heat shrink sleeve, the inner side of the first heat shrink sleeve is fixedly connected with a plurality of first arc-shaped cross-section heat insulation sheets in an annular array on the inner side of the first heat shrink sleeve, the inner side of the second heat shrink sleeve is fixedly connected with a plurality of second arc-shaped cross-section heat insulation sheets in an annular array on the inner side of the second heat shrink sleeve, the inner side of the second heat shrink sleeve is fixedly connected with a hot melt tube, and the inner side of the hot melt tube is fixedly connected with a plurality of conical top fixings in an annular array.
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Description

Technical Field

[0001] The utility model relates to the field of heat shrinkable tubes, in particular to a heat shrinkable tube for insulating products which is resistant to high temperature and corrosion. Background Art

[0002] Heat shrink tubing is a special polyolefin heat shrink tubing. The outer layer is made of high-quality soft cross-linked polyolefin material and the inner layer is made of hot melt adhesive. The outer layer has the characteristics of insulation, corrosion resistance, and wear resistance, while the inner layer has the advantages of low melting point, waterproof sealing, and high adhesion.

[0003] The surfaces of existing heat shrink tubes are relatively smooth due to the molding process. When the heat shrink tube needs to have a larger surface with greater friction, the existing heat shrink tube products are difficult to meet the requirements due to their smooth surface and small friction. Therefore, the market urgently needs to develop a high temperature and corrosion resistant insulation product heat shrink tube to help people solve the existing problems. Utility Model Content

[0004] The purpose of the utility model is to provide a heat shrink tube for insulating products that is resistant to high temperature and corrosion, so as to solve the problem mentioned in the above background technology that the existing heat shrink tubes have relatively smooth surfaces due to the molding process. When the heat shrink tube is required to have a larger surface with greater friction, the existing heat shrink tube products have a smooth surface and small friction and are difficult to meet the requirements.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant and corrosion-resistant heat shrinkable tube for insulating products, comprising a heat shrinkable tube body, the outermost layer of the heat shrinkable tube body is provided with a wear-resistant layer, the inner side of the wear-resistant layer is fixedly connected with a corrosion-resistant layer, the inner side of the corrosion-resistant layer is fixedly connected with a first heat shrinkable sleeve, the inner side of the first heat shrinkable sleeve is connected with a second heat shrinkable sleeve, a cavity is provided between the first heat shrinkable sleeve and the second heat shrinkable sleeve, a plurality of first arc-shaped cross-section thermal insulation sheets are fixedly connected to an annular array on the inner end face of the first heat shrinkable sleeve, a plurality of second arc-shaped cross-section thermal insulation sheets are fixedly connected to an annular array on the inner end face of the second heat shrinkable sleeve, a hot melt tube is fixedly connected to the inner side of the second heat shrinkable sleeve, and a plurality of conical top fixings are fixedly connected to an annular array on the inner end face of the hot melt tube.

[0006] Preferably, the wear-resistant layer is evenly filled with polyurethane fibers.

[0007] Preferably, the middle portion of the inner side of each of the first arc-shaped cross-section heat insulation sheets is fixedly connected to the outer end surface of the second heat shrinkable sleeve through a plurality of first hot-melt connecting rods.

[0008] Preferably, the middle portion of the outer side of each of the second arc-shaped cross-section heat insulation sheets is fixedly connected to the inner end surface of the first heat shrinkable sleeve via a plurality of second hot-melt connecting rods.

[0009] Preferably, the upper end of each of the conical top fixing members is fixedly connected to the inner end surface of the hot-melt tube via a connecting piece.

[0010] Preferably, a contraction cavity is provided at the lower end of the interior of each of the conical top fixing members, and arc-shaped portions are provided on both sides of the contraction cavity.

[0011] Preferably, a soft fitting edge is provided on the lower end surface of each conical top fixing member between the two arc-shaped portions.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, through the arrangement of the conical top fixing piece, a plurality of conical top fixing pieces are fixedly connected to the inner annular array of the hot melt tube, a contraction cavity is arranged at the lower end inside each conical top fixing piece, and arc-shaped parts are arranged on both sides of the contraction cavity, so that the contraction cavity of the heat shrinkable tube contracts when it is under pressure, and at the same time, the outer layer structure is lifted up at the upper end of the conical top fixing piece, so that a plurality of evenly arranged protrusions are formed on the surface of the heat shrinkable tube after the heat shrinkage is completed, and the plurality of protrusions make the outer surface of the heat shrinkable tube have good anti-slip ability after the heat shrinkage is completed.

[0014] 2. In the utility model, through the arrangement of the first arc-shaped cross-section thermal insulation sheet and the second arc-shaped cross-section thermal insulation sheet, the inner end surface of the first heat shrinkable tube is fixedly connected with a plurality of first arc-shaped cross-section thermal insulation sheets in an annular array, and the inner end surface of the second heat shrinkable tube is fixedly connected with a plurality of second arc-shaped cross-section thermal insulation sheets in an annular array. When the heat shrinkable tube shrinks, heat is transferred through the cavity between the first heat shrinkable tube and the second heat shrinkable tube to ensure normal heat shrinkage. At the same time, the first heat shrinkable tube and the second heat shrinkable tube shrink at the same time and the cavity is compressed until it disappears, so that the first arc-shaped cross-section thermal insulation sheet and the second arc-shaped cross-section thermal insulation sheet are alternately and closely fitted to form a high-temperature resistant layer. At the same time, the first hot-melt connecting rod and the second hot-melt connecting rod are hot-melted to fix the high-temperature resistant layer to the first heat shrinkable tube and the second heat shrinkable tube.

[0015] 3. In the utility model, through the provision of a soft fitting edge, a soft fitting edge is provided on the lower end surface of each conical top fixing part between the two arc-shaped parts. After the shrinkage cavity shrinks, the surface of the wire harness to be heat-shrunk is fitted through the soft fitting edge, so that the entire heat shrink tube has good applicability to wire harnesses of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a main cross-sectional view of a heat shrinkable tube for insulating products that is resistant to high temperatures and corrosion according to the utility model;

[0017] Figure 2 It is a side sectional view of the utility model;

[0018] Figure 3 It is an enlarged view of the detail A of the utility model;

[0019] Figure 4 It is an enlarged view of detail B of the present utility model.

[0020] In the figure: 1. heat shrinkable tube body; 101. wear-resistant layer; 102. corrosion-resistant layer; 103. first heat shrinkable sleeve; 104. second heat shrinkable sleeve; 105. cavity; 106. polyurethane fiber; 107. hot melt tube; 2. first arc-shaped cross-section thermal insulation sheet; 201. first hot melt connecting rod; 3. second arc-shaped cross-section thermal insulation sheet; 301. second hot melt connecting rod; 4. conical top fixing piece; 401. connecting sheet; 402. shrinkage cavity; 403. arc-shaped portion; 404. soft fitting edge. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-4 The utility model provides an embodiment: a heat shrink tube for insulating products that is resistant to high temperature and corrosion, comprising a heat shrink tube body 1, the outermost layer of the heat shrink tube body 1 is provided with a wear-resistant layer 101, a corrosion-resistant layer 102 is fixedly connected to the inner side of the wear-resistant layer 101, a first heat shrink sleeve 103 is fixedly connected to the inner side of the corrosion-resistant layer 102, a second heat shrink sleeve 104 is connected to the inner side of the first heat shrink sleeve 103, a cavity 105 is provided between the first heat shrink sleeve 103 and the second heat shrink sleeve 104, a plurality of first arc-shaped cross-section heat insulation sheets 2 are fixedly connected to the inner end face annular array of the first heat shrink sleeve 103, a plurality of second arc-shaped cross-section heat insulation sheets 3 are fixedly connected to the inner end face annular array of the second heat shrink sleeve 104, a hot melt tube 107 is fixedly connected to the inner side of the second heat shrink sleeve 104, and a plurality of conical top fixing members 4 are fixedly connected to the inner annular array of the hot melt tube 107.

[0023] Furthermore, the wear-resistant layer 101 is uniformly filled with polyurethane fibers 106 , and the polyurethane fibers 106 improve the anti-slip ability of the wear-resistant layer 101 .

[0024] Furthermore, the middle inner side of each first arc-shaped cross-section heat insulation sheet 2 is fixedly connected to the outer end surface of the second heat shrinkable sleeve 104 through a plurality of first hot-melt connecting rods 201 , so that the first heat shrinkable sleeve 103 and the second heat shrinkable sleeve 104 are fixedly connected.

[0025] Furthermore, the middle outer side of each second arc-shaped cross-section thermal insulation sheet 3 is fixedly connected to the inner end surface of the first heat shrinkable sleeve 103 through a plurality of second hot-melt connecting rods 301 , thereby improving the stability of the fixed connection between the first heat shrinkable sleeve 103 and the second heat shrinkable sleeve 104 .

[0026] Furthermore, the upper end of each conical top fixing member 4 is fixedly connected to the inner end surface of the hot-melt tube 107 via a connecting piece 401 .

[0027] Furthermore, a shrinkage cavity 402 is provided at the lower end inside each conical top fixing member 4, and arc-shaped portions 403 are provided on both sides of the shrinkage cavity 402, so that the shrinkage cavity 402 of the heat shrinkable tube shrinks when under pressure, and at the same time, the outer layer structure is lifted up at the upper end of the conical top fixing member 4, so that a plurality of evenly arranged protrusions are formed on the surface of the heat shrinkable tube after heat shrinkage is completed, and the plurality of protrusions make the outer surface of the heat shrinkable tube have good anti-slip ability after heat shrinkage is completed.

[0028] Furthermore, a soft fitting edge 404 is provided on the lower end surface of each conical top fixing member 4 between the two arc-shaped portions 403. After the shrinkage cavity 402 shrinks, the surface of the wire harness being heat-shrunk is fitted through the soft fitting edge 404, so that the entire heat shrink tube has good applicability to wire harnesses of different sizes.

[0029] Working principle: When in use, the outermost layer of the heat shrinkable tube body 1 is provided with a wear-resistant layer 101, the inner side of the wear-resistant layer 101 is fixedly connected with a corrosion-resistant layer 102, the inner side of the corrosion-resistant layer 102 is fixedly connected with a first heat shrinkable sleeve 103, the inner side of the first heat shrinkable sleeve 103 is connected with a second heat shrinkable sleeve 104, a cavity 105 is provided between the first heat shrinkable sleeve 103 and the second heat shrinkable sleeve 104, a plurality of first arc-shaped cross-section heat insulation sheets 2 are fixedly connected in an annular array on the inner end face of the first heat shrinkable sleeve 103, and a plurality of first arc-shaped cross-section heat insulation sheets 2 are fixedly connected in an annular array on the inner end face of the first heat shrinkable sleeve 103. The inner end surface of the second heat shrinkable sleeve 104 is fixedly connected with a plurality of second arc-shaped cross-section heat insulation sheets 3 in an annular array. When the heat shrinkable tube shrinks, heat is transferred between the first heat shrinkable sleeve 103 and the second heat shrinkable sleeve 104 through the cavity 105 to ensure normal heat shrinkage. At the same time, the first heat shrinkable sleeve 103 and the second heat shrinkable sleeve 104 shrink at the same time and compress the cavity 105 until it disappears, so that the first arc-shaped cross-section heat insulation sheet 2 and the second arc-shaped cross-section heat insulation sheet 3 are alternately and closely fitted to form a high temperature resistant layer. At the same time, the first heat shrinkable sleeve 103 and the second heat shrinkable sleeve 104 shrink at the same time and compress the cavity 105 until it disappears. The hot-melt connecting rod 201 is hot-melted with the second hot-melt connecting rod 301 to fix the high-temperature resistant layer between the first heat shrinkable tube 103 and the second heat shrinkable tube 104. The second heat shrinkable tube 104 is fixedly connected with a hot-melt tube 107 inside. A plurality of conical top fixing members 4 are fixedly connected in an annular array inside the hot-melt tube 107. Each conical top fixing member 4 has a shrinkage cavity 402 at the lower end thereof. Both sides of the shrinkage cavity 402 are provided with arc portions 403 to enable the heat shrinkable tube to shrink when under pressure. The shrinkage cavity 402 shrinks, and at the same time, the outer layer structure is lifted up at the upper end of the conical top fixing piece 4, so that a plurality of evenly arranged protrusions are formed on the surface of the heat shrinkable tube after the heat shrinkage is completed. The plurality of protrusions make the outer surface of the heat shrinkable tube have good anti-slip ability after the heat shrinkage is completed. The lower end surface of each conical top fixing piece 4 is provided with a soft fitting edge 404. After the shrinkage cavity 402 shrinks, the surface of the wiring harness to be heat shrunk is fitted through the soft fitting edge 404, so that the entire heat shrinkable tube has good applicability to wiring harnesses of different sizes.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A heat shrinkable tube for insulating products that is resistant to high temperature and corrosion, comprising a heat shrinkable tube body (1), characterized in that: The outermost layer of the heat shrinkable tube body (1) is provided with a wear-resistant layer (101); the inner side of the wear-resistant layer (101) is fixedly connected to a corrosion-resistant layer (102); the inner side of the corrosion-resistant layer (102) is fixedly connected to a first heat shrinkable sleeve (103); the inner side of the first heat shrinkable sleeve (103) is connected to a second heat shrinkable sleeve (104); a cavity (105) is provided between the first heat shrinkable sleeve (103) and the second heat shrinkable sleeve (104); a plurality of first arc-shaped heat insulation sheets (2) are fixedly connected in an annular array on the inner side end surface of the first heat shrinkable sleeve (103); a plurality of second arc-shaped heat insulation sheets (3) are fixedly connected in an annular array on the inner side end surface of the second heat shrinkable sleeve (104); a hot melt tube (107) is fixedly connected in an annular array on the inner side end surface of the second heat shrinkable sleeve (104); and a plurality of conical top fixing members (4) are fixedly connected in an annular array on the inner side end surface of the hot melt tube (107).

2. The heat shrinkable tube for insulating products resistant to high temperature and corrosion according to claim 1, characterized in that: The wear-resistant layer (101) is evenly filled with polyurethane fibers (106).

3. The heat shrinkable tube for insulating products resistant to high temperature and corrosion according to claim 1, characterized in that: The inner middle portion of each of the first arc-shaped cross-section heat insulation sheets (2) is fixedly connected to the outer end surface of the second heat shrinkable sleeve (104) via a plurality of first hot-melt connecting rods (201).

4. The heat shrinkable tube for insulating products resistant to high temperature and corrosion according to claim 1, characterized in that: The middle portion of the outer side of each of the second arc-shaped cross-section heat insulation sheets (3) is fixedly connected to the inner end surface of the first heat shrinkable sleeve (103) via a plurality of second hot-melt connecting rods (301).

5. The heat shrinkable tube for insulating products resistant to high temperature and corrosion according to claim 1, characterized in that: The upper end of each conical top fixing member (4) is fixedly connected to the inner end surface of the hot-melt tube (107) via a connecting piece (401).

6. The heat shrinkable tube for insulating products resistant to high temperature and corrosion according to claim 1, characterized in that: A contraction cavity (402) is provided at the lower end of the interior of each conical top fixing member (4), and arc-shaped portions (403) are provided on both sides of the contraction cavity (402).

7. The heat shrinkable tube for insulating products resistant to high temperature and corrosion according to claim 6, characterized in that: The lower end surface of each conical top fixing member (4) is provided with a soft fitting edge (404) between the two arc-shaped portions (403).