Novel sealing structure of automobile wire harness

Abstract

The utility model discloses a novel automobile wire harness sealing structure comprising a wire harness and a plug used for connecting the wire harness, and the outer side of the wire harness is provided with a sealing assembly. The sealing assembly comprises an elastic layer arranged on the wire harness in a sleeving mode, a heat-shrinkable sleeve arranged on the outer side of the wire harness in a covering mode and a glue storage groove formed in one end of the elastic layer. The heat-shrinkable sleeve is arranged at one end of the elastic layer in a covering mode, and the glue storage grooves make contact with one another and are jointly filled with a sealing glue layer. Through the structure, the waterproof, dustproof, anti-vibration and electromagnetic shielding performances of the automobile wire harness are effectively improved through the multi-layer synergistic effect of the elastic layer, the heat-shrinkable sleeve, the sealant layer and the shielding layer, and the automobile wire harness is suitable for an automobile use environment; and the heat-shrinkable sleeve comprises the inner layer and the outer layer, so that a good sealing barrier can be formed, and meanwhile, the stability of connection between the elastic layer and the wire harness is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile wire harness sealing structure, especially a new type of automobile wire harness sealing structure. BACKGROUND

[0002] The automobile wire harness is the core component of the vehicle electrical system, and its function is similar to the "nervous system" of the human body, responsible for power transmission and signal control, and its reliability directly affects the safety, functionality and durability of the vehicle.

[0003] The automobile wire harness is connected between two wire harnesses through the plug-in cooperation between the connectors, and the installation of the above wire harness and the connector is only a simple plug-in cooperation, which cannot meet the automobile use environment, and the ordinary plug-in structure is prone to sealing failure due to material aging or structural deformation under long-term vibration, high and low temperature changes or water environment, or the plug-in terminal may be worn out or even loosened due to continuous vibration during vehicle driving. Therefore, the utility model provides a new type of automobile wire harness sealing structure to solve the problems in the above background technology. UTILITY MODEL CONTENTS

[0004] The utility model discloses a new type of automobile wire harness sealing structure, which effectively improves the waterproof, dustproof, anti-vibration and electromagnetic shielding performance of the automobile wire harness through the multi-layer synergistic effect of the elastic layer, the heat shrink sleeve, the sealing glue layer and the shielding layer, and is suitable for the automobile use environment.

[0005] In order to achieve the above purpose, a new type of automobile wire harness sealing structure is provided, which comprises a wire harness and a plug for connecting the wire harness, and the outer side of the wire harness is provided with a sealing assembly.

[0006] The sealing assembly comprises an elastic layer sleeved on the wire harness, a heat shrink sleeve covered on the outer side of the wire harness, and a glue storage groove opened at one end of the elastic layer, the heat shrink sleeve is covered at one end of the elastic layer, and the glue storage grooves are in contact with each other and are filled with a sealing glue layer.

[0007] According to the new type of automobile wire harness sealing structure, the outer side of the elastic layer is jointly covered with a shielding layer.

[0008] According to the new type of automobile wire harness sealing structure, the surface of the glue storage groove is provided with a plurality of grooves.

[0009] According to the new type of automobile wire harness sealing structure, the heat shrink sleeve comprises an inner layer and an outer layer, the inner layer is a conductive glue layer, and the outer layer is a flame-retardant heat shrink material.

[0010] According to the new type of automobile wire harness sealing structure, the elastic layer is high-temperature-resistant silica gel or fluorine rubber.

[0011] According to the sealing structure of the novel automobile wire harness, the shielding layer is an aluminum foil or a copper-plated woven layer.

[0012] According to the sealing structure of the novel automobile wire harness, the sealing adhesive layer is a thermosetting polyurethane adhesive.

[0013] The utility model has the advantages of the following beneficial effects:

[0014] 1. Compared with the prior art, the multilayer synergistic effect of the elastic layer, the heat shrinkable sleeve, the sealing adhesive layer and the shielding layer effectively improves the waterproof, dustproof, anti-vibration and electromagnetic shielding performance of the automobile wire harness, and the automobile wire harness is suitable for the automobile use environment.

[0015] 2. Compared with the prior art, the heat shrinkable sleeve comprises an inner layer and an outer layer, can form a good sealing barrier, and increases the stability of the elastic layer and the wire harness connection. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described below in combination with the drawings and examples;

[0017] Figure 1 It is the whole structure schematic diagram of a novel automobile wire harness's sealing structure of the utility model;

[0018] Figure 2 It is the shielding layer cross section structure schematic diagram of a novel automobile wire harness's sealing structure of the utility model;

[0019] Figure 3 It is the elastic layer cross section structure schematic diagram of a novel automobile wire harness's sealing structure of the utility model;

[0020] Figure 4 It is the elastic layer and the storage adhesive layer structure schematic diagram of a novel automobile wire harness's sealing structure of the utility model;

[0021] Figure 5 It is the heat shrinkable sleeve structure schematic diagram of a novel automobile wire harness's sealing structure of the utility model.

[0022] LEGEND:

[0023] 1. Wire harness; 2. Heat shrinkable sleeve; 3. Elastic layer; 4. Shielding layer; 5. Plug; 6. Sealing adhesive layer; 7. Storage adhesive groove; 21. Inner layer; 22. Outer layer. DETAILED DESCRIPTION

[0024] The detailed embodiments of the utility model will be described in detail in this part, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0025] Referring to Figures 1-5 The utility model discloses a novel sealing structure of automobile wire harness, which comprises a wire harness 1 and a plug 5 for connecting the wire harness 1, the outer side of the wire harness 1 is provided with a sealing assembly, the sealing assembly comprises an elastic layer 3 sleeved on the wire harness 1, a heat shrink sleeve 2 covered on the outer side of the wire harness 1, and a glue storage groove 7 opened at one end of the elastic layer 3, the heat shrink sleeve 2 is covered at one end of the elastic layer 3, the glue storage grooves 7 are in contact with each other and are filled with a sealing glue layer 6, and the outer side of the elastic layer 3 is covered with a shielding layer 4.

[0026] The elastic layer 3 and the heat shrink sleeve 2 are sleeved on the wire harness 1, after the wire harness 1 is connected through the plug 5, the heat shrink sleeve 2 is shrunk by heating, the heat shrink sleeve 2 is wrapped at the connecting position of the elastic layer 3 and the wire harness 1, the stability of the elastic layer 3 is ensured while forming a sealing barrier. The sealing glue layer 6 is injected into the glue storage groove 7, the glue fills the glue storage groove 7 under heating, and forms a sealing structure without gap after solidification, effectively preventing water vapor and dust from invading.

[0027] The surface of the glue storage groove 7 is provided with a plurality of grooves, which is used for increasing the contact area of the sealing glue and improving the sealing and connecting effect.

[0028] The heat shrink sleeve 2 comprises an inner layer 21 and an outer layer 22, the inner layer 21 is a conductive glue layer, and the outer layer 22 is a flame-retardant heat shrink material, the heat shrink sleeve 2 is shrunk by heating, the conductive glue of the inner layer 21 tightly fills the gap between the wire harness 1 and the sleeve, and a sealing barrier is formed.

[0029] The elastic layer 3 is high-temperature-resistant silica gel or fluorine rubber, which maintains good elasticity and sealing property and forms an elastomer layer. The shielding layer 4 is aluminum foil or copper-plated woven layer, which has electromagnetic shielding and mechanical protection functions. The sealing glue layer 6 is thermosetting polyurethane glue, which is solidified to form a gapless wrapping after being heated.

[0030] Working principle: the elastic layer 3 and the heat shrink sleeve 2 are sleeved on the wire harness 1, after the wire harness 1 is connected through the plug 5, the heat shrink sleeve 2 is shrunk by heating, the heat shrink sleeve 2 is wrapped at the connecting position of the elastic layer 3 and the wire harness 1, the stability of the elastic layer 3 is ensured while forming a sealing barrier. The sealing glue layer 6 is injected into the glue storage groove 7, the glue fills the glue storage groove 7 under heating, and forms a sealing structure without gap after solidification, effectively preventing water vapor and dust from invading.

[0031] The sealing structure effectively improves the waterproof, dustproof, anti-vibration and electromagnetic shielding performance of the automobile wire harness through the multi-layer synergistic effect of the elastic layer 3, the heat-shrinkable sleeve 2, the sealing glue layer 6 and the shielding layer 4, and is suitable for the automobile use environment.

[0032] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A novel sealing structure of an automobile wire harness, characterized by, The utility model relates to a wire harness (1) and a plug (5) for connecting the wire harness (1), the outer side of the wire harness (1) is provided with a sealing assembly; The sealing assembly comprises an elastic layer (3) sleeved on the wire harness (1), a heat shrink sleeve (2) covered on the outer side of the wire harness (1), and a glue storage groove (7) opened at one end of the elastic layer (3); the heat shrink sleeve (2) is covered on one end of the elastic layer (3), and the glue storage grooves (7) are in contact with each other and are filled with a sealing glue layer (6) in the inside.

2. The novel sealing structure of an automobile wire harness according to claim 1, characterized by, The outer side of the elastic layer (3) is jointly covered with a shielding layer (4).

3. The novel sealing structure of an automobile wire harness according to claim 2, characterized in that, The surfaces of the glue storage grooves (7) are provided with a plurality of grooves.

4. The novel sealing structure of an automobile wire harness according to claim 3, characterized in that, The heat shrink sleeve (2) comprises an inner layer (21) and an outer layer (22), the inner layer (21) is a conductive glue layer, and the outer layer (22) is a flame-retardant heat shrink material.

5. The novel sealing structure of an automobile wire harness according to claim 4, characterized in that, The elastic layer (3) is high-temperature-resistant silicone or fluorine rubber.

6. The novel sealing structure of an automobile wire harness according to claim 5, characterized by The shielding layer (4) is an aluminum foil or a copper-plated braided layer.

7. The novel sealing structure of an automobile wire harness according to claim 1, characterized by The sealing glue layer (6) is a thermosetting polyurethane glue.

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