Heat-shrinkable sleeve applied to automobile terminal

Abstract

The utility model discloses a heat-shrinkable sleeve applied to an automobile terminal, which belongs to the field of heat-shrinkable sleeves and comprises an outer layer, a support layer coaxially arranged in the outer layer and an inner layer coaxially arranged in the support layer, waterproof rings are symmetrically arranged at two ends of the inner layer, and the waterproof rings are arranged in the outer layer. A hot melt adhesive layer is fixedly installed between the two waterproof rings, and the two ends of the hot melt adhesive layer are connected with the two waterproof rings respectively. According to the heat-shrinkable sleeve applied to the automobile terminal, the hot melt adhesive layer and the waterproof ring are arranged, and the hot melt adhesive fills the adhesive groove after being heated, so that a second waterproof barrier is formed between the waterproof ring and the terminal, and a better waterproof effect is achieved by matching with the waterproof ring; through the design of the double waterproof barriers, no gap between the terminal and the heat-shrinkable sleeve is ensured, the invasion of moisture or moisture is avoided, and the reliability and durability of the system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrinkable sleeves, in particular to a heat shrinkable sleeve applied to automobile terminals. Background Art

[0002] Heat shrink tubing used in automotive terminals is an electrical insulation and mechanical protection material designed specifically for automotive wiring harnesses. This heat shrink tubing plays a key role in wire connection and harness protection, providing stability and safety for the electrical system inside the car.

[0003] Upon investigation, the Chinese utility model patent with publication number CN215807068U discloses a heat shrinkable sleeve, including a sleeve body; an inner convex portion, a plurality of the inner convex portions are evenly arranged on the inner wall surface of the sleeve body along the inner circumferential direction of the sleeve body, and a plurality of the inner convex portions protrude toward the center direction of the sleeve body; and an open groove body, a plurality of the open groove bodies are staggeredly arranged on the outer wall surface of the sleeve body along the axial direction of the sleeve body.

[0004] In the above-mentioned sleeve, the air flow channel can enable the sleeve body to discharge the air in time when it shrinks due to heat until the inner wall of the sleeve body is bonded to the object to be protected, which can avoid the phenomenon of holding air when the sleeve body shrinks due to heat, thereby improving the shrinking efficiency and shrinking effect of the sleeve body; by staggeredly arranging the open grooves on the outer wall of the sleeve body, the use performance of the heat shrinkable sleeve can be effectively guaranteed, and the inconsistent shrinkage of the inner and outer sides of the sleeve body caused by heating can be effectively avoided. However, the open grooves opened by the above-mentioned heat shrinkable sleeve to ensure the installation accuracy will lead to insufficient sealing of the two ends of the heat shrinkable sleeve, and the waterproof and dustproof performance will be reduced during the use of the car, thereby losing the protective effect on the wiring harness at the terminal.

[0005] Therefore, the utility model provides a heat shrink sleeve applied to automobile terminals to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] The utility model provides a heat shrink sleeve applied to automobile terminals, aiming to solve the problems of poor waterproof and dustproof effects at two ends of the existing heat shrink sleeve proposed in the background technology.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a heat shrink sleeve used in automobile terminals, comprising an outer layer, a supporting layer coaxially arranged in the outer layer, and an inner layer coaxially arranged in the supporting layer, waterproof rings are symmetrically arranged at both ends of the inner layer, a hot melt adhesive layer is fixedly installed between the two waterproof rings, and the two ends of the hot melt adhesive layer are respectively connected to the two waterproof rings.

[0010] Preferably, support ribs distributed in a ring array are embedded and installed in the support layer, and the support ribs are arranged parallel to the central axis of the inner layer.

[0011] Preferably, an "S"-shaped reinforcement portion is provided on the support rib.

[0012] Preferably, an adhesive groove is provided at one end of the waterproof ring close to the hot melt adhesive layer.

[0013] Preferably, a reinforcement ring is fixedly mounted on one end of the outer layer away from the inner layer.

[0014] Preferably, the waterproof ring is made of soluble polytetrafluoroethylene.

[0015] (III) Beneficial effects

[0016] The heat shrink tubing used in automotive terminals has a simple structure and is easy to use. By providing a hot melt adhesive layer and a waterproof ring, the hot melt adhesive melts when heated and fills all gaps between the terminal and the heat shrink tubing under the action of extrusion, thereby fastening the heat shrink tubing and the terminal. The hot melt adhesive fills the adhesive groove after heating, thereby forming a second waterproof barrier between the waterproof ring and the terminal, and cooperates with the waterproof ring to achieve a better waterproof effect. Through this double waterproof barrier design, it is ensured that there is no gap between the terminal and the heat shrink tubing, avoiding the intrusion of water or moisture, thereby improving the reliability and durability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a heat shrink tubing used in automotive terminals;

[0018] Figure 2 It is a schematic diagram of a cross-sectional structure used in automobile terminals;

[0019] Figure 3 A schematic diagram of the internal structure of a terminal used in an automobile;

[0020] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1, outer layer; 11, reinforcement ring; 2, inner layer; 3, support layer; 31, support ribs; 311, reinforcement part; 4, hot melt adhesive layer; 5, waterproof ring; 51, adhesive groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a heat shrink sleeve used in automobile terminals, such as Figure 1-4 As shown, the heat shrinkable sleeve includes an outer layer 1, a supporting layer 3 coaxially arranged in the outer layer 1, and an inner layer 2 coaxially arranged in the supporting layer 3, waterproof rings 5 ​​are symmetrically arranged at both ends of the inner layer 2, a hot melt adhesive layer 4 is fixedly installed between the two waterproof rings 5, both ends of the hot melt adhesive layer 4 are respectively connected to the two waterproof rings 5, and an adhesive groove 51 is opened at one end of the waterproof ring 5 close to the hot melt adhesive layer 4.

[0024] When in use, the heat shrinkable sleeve is put on the terminal, and the sleeve is heated. The outer layer 1, the supporting layer 3, the inner layer 2 and the waterproof ring 5 shrink coaxially to cover the terminal. While heating, the hot melt adhesive layer 4 melts and fills the gap between the terminal and the heat shrinkable sleeve under the action of extrusion. At the same time, since the waterproof ring 5 is arranged at both ends of the hot melt adhesive layer 4, the hot melt adhesive will fully fill the gap between the waterproof ring 5 and the terminal when it melts, thereby fixing the waterproof ring 5. By arranging an annular adhesive groove 51 on the inner side of the waterproof ring 5, the hot melt adhesive layer 4 will fill the adhesive groove 51 under the action of extrusion after it melts. The second waterproof barrier formed by the adhesive groove 51 and the colloid between the closed waterproof ring 5 and the terminal can achieve a better waterproof effect.

[0025] Furthermore, the support layer 3 is embedded with support ribs 31 distributed in a ring array, and the support ribs 31 are arranged parallel to the central axis of the inner layer 2; an "S"-shaped reinforcement portion 311 is arranged on the support rib 31, and a reinforcement ring 11 is fixedly installed on the end of the outer layer 1 away from the inner layer 2; during heat shrinkage, the parallel support ribs 31 will not affect the shrinkage of the heat shrinkable tube, and by setting the "S"-shaped reinforcement portion 311, the axial tensile strength of the heat shrinkable tube after heat shrinkage is increased, which can effectively prevent the wire harness at the crimped terminal from being pulled out of the terminal due to tension, and by setting the reinforcement ring 11, the tensile strength of the terminal wiring position is further improved.

[0026] It should be noted that the waterproof ring 5 is made of soluble polytetrafluoroethylene.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat shrink sleeve for automobile terminals, comprising an outer layer (1), a support layer (3) coaxially arranged in the outer layer (1), and an inner layer (2) coaxially arranged in the support layer (3), characterized in that: Waterproof rings (5) are symmetrically arranged at both ends of the inner layer (2), a hot melt adhesive layer (4) is fixedly installed between the two waterproof rings (5), and both ends of the hot melt adhesive layer (4) are respectively connected to the two waterproof rings (5).

2. The heat shrink tubing used in automobile terminals according to claim 1, characterized in that: The support layer (3) is embedded with support ribs (31) distributed in a ring array, and the support ribs (31) are arranged parallel to the central axis of the inner layer (2).

3. The heat shrink tubing used in automobile terminals according to claim 2, characterized in that: The support rib (31) is provided with an S-shaped reinforcement portion (311).

4. The heat shrink tubing used in automobile terminals according to claim 1, characterized in that: An adhesive groove (51) is formed at one end of the waterproof ring (5) close to the hot melt adhesive layer (4).

5. The heat shrink tubing used in automobile terminals according to claim 3, characterized in that: A reinforcement ring (11) is fixedly mounted on one end of the outer layer (1) away from the inner layer (2).

6. The heat shrink tubing used in automobile terminals according to claim 4, characterized in that: The waterproof ring (5) is made of soluble polytetrafluoroethylene.

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