Automobile high-voltage wire harness with heat-resistant function

Abstract

The utility model discloses an automobile high-voltage wire harness with a heat-resistant function, which comprises a wire harness body, a first protection mechanism is arranged outside a high-temperature area of the wire harness body, a reinforcing mechanism is arranged outside the first protection mechanism, the reinforcing mechanism comprises a net cover, and the net cover is arranged outside the first protection mechanism; a second protection mechanism is arranged on the outer wall of the second isolation sleeve, and fixing mechanisms are arranged at the ends of the second protection mechanism; the heat insulation film is fixed to the inner wall of the first isolation sleeve, and the first protection mechanism is arranged in an inner cavity of the heat insulation film. Through the arrangement mode that the first protection mechanism and the second protection mechanism are matched with each other, heat-resistant protection on the high-temperature area of the wire harness body is improved, the service life of the wire harness body is prolonged, heat dissipated by the wire harness body can be dissipated from the non-high-temperature area of the end portion, and heat dissipation of the wire harness body is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile high-voltage wire harnesses, in particular to an automobile high-voltage wire harness with a heat-resistant function. Background Art

[0002] The automotive wiring harness is the main network of the automotive circuit. Without the wiring harness, there would be no automotive circuit. The wiring harness refers to the components that are bundled with the wiring harness to form a circuit connection after the contact terminals made of copper are crimped with wires and cables, and then plastic-pressed with insulators or metal shells.

[0003] Application No. 202121519144.X discloses a high-voltage wiring harness for new energy vehicles, including a high-voltage wiring harness main body, a conductor is provided at the inner center of the high-voltage wiring harness main body, the outer sleeve of the conductor is provided with an insulating layer, the outer sleeve of the insulating layer is provided with a polyester tape layer, the outer sleeve of the polyester tape layer is provided with a tinned copper wire braided layer, the outer sleeve of the tinned copper wire braided layer is provided with a high-voltage wiring harness shielding layer, the outer sleeve of the high-voltage wiring harness shielding layer is provided with a heat dissipation support structure, and the outer sleeve of the heat dissipation support structure is provided with a waterproof and flame-retardant sheath. The above-mentioned high-voltage wiring harness passes through the insulating layer, so that the wiring harness has a certain heat resistance, but during the driving process of the car, especially the part close to the engine has the highest temperature, so the high-voltage wiring harness is required to have high-strength heat resistance in some high-temperature areas to prevent some areas of the wiring harness from aging faster due to high temperature, affecting the overall service life of the vehicle's high-voltage wiring harness. Utility Model Content

[0004] The utility model aims to provide a high-voltage wiring harness for automobiles with heat-resistant function to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a high-voltage automotive wire harness with heat resistance, comprising: a wire harness body, a first protective mechanism is arranged outside the high-temperature area of ​​the wire harness body, a reinforcement mechanism is arranged outside the first protective mechanism, and the reinforcement mechanism comprises:

[0006] A net sleeve, the net sleeve is arranged outside the first protection mechanism;

[0007] A first insulating sleeve and a second insulating sleeve, wherein the first insulating sleeve and the second insulating sleeve are respectively fitted and fixed to the inner wall and the outer wall of the mesh sleeve, the outer wall of the second insulating sleeve is provided with a second protective mechanism, and the ends of the second protective mechanism are both provided with a fixing mechanism;

[0008] The thermal insulation film is fixed to the inner wall of the first insulating sleeve, and the first protective mechanism is arranged in the inner cavity of the thermal insulation film.

[0009] Preferably, the first protection mechanism comprises:

[0010] A flame retardant sheath, wherein the flame retardant sheath is sleeved on the outside of the wiring harness body;

[0011] A plurality of rubber rings, wherein the plurality of rubber rings are fixed to the inner wall of the flame retardant sheath at equal distances, and the inner wall of the rubber ring is in contact with the outer wall of the wiring harness body;

[0012] A plurality of vent holes are staggeredly arranged in the middle of the plurality of rubber rings.

[0013] Preferably, the thermal insulation film is fitted and fixed to the outer wall of the flame retardant sheath, and the inner cavities of the plurality of ventilation holes are connected.

[0014] Preferably, the second protection mechanism comprises:

[0015] An insulating sheath, wherein the insulating sheath is fixed to the outer wall of the second insulating sheath;

[0016] A wear-resistant layer, the wear-resistant layer being fixed to the outer wall of the insulating sheath;

[0017] A plurality of heat-resistant protrusions are fixed to the outer wall of the wear-resistant layer at equal intervals in a ring array.

[0018] Preferably, the fixing mechanism comprises:

[0019] A plug, which is arranged at the end of the insulating sheath;

[0020] A rubber ring, the rubber ring being fixed to the inner wall of the plug;

[0021] A plurality of vent holes, wherein the plurality of vent holes are formed in a circular array and are disposed on the outer wall of the plug;

[0022] A reinforcement ring is fixed to the outer wall of the plug.

[0023] Preferably, the reinforcement ring is fixed to the outer wall of the insulating sheath through a wear-resistant layer, and the inner wall of the rubber ring is in contact with the outer wall of the wiring harness body.

[0024] Technical effects and advantages of the utility model:

[0025] The utility model facilitates the protection of the reinforcement mechanism by cooperating with the first protection mechanism and the second protection mechanism, and utilizes the heat-insulating film on the reinforcement mechanism to improve the heat-resistant protection of the high-temperature area of ​​the wiring harness body, reduce the local high-temperature aging phenomenon of the wiring harness body, and increase the service life of the wiring harness body. Moreover, through the setting of the fixing mechanism, the heat dissipated by the wiring harness body can be dissipated from the non-high-temperature area of ​​the end, so as not to affect the heat dissipation of the wiring harness body itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0027] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the side of the wiring harness body of the utility model.

[0028] Figure 3 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0029] In the figure: 1. wiring harness body; 2. first protective mechanism; 21. flame retardant sheath; 22. rubber ring; 23. vent; 3. reinforcement mechanism; 31. mesh sleeve; 32. first insulating sleeve; 33. second insulating sleeve; 34. thermal insulation film; 4. second protective mechanism; 41. insulating sleeve; 42. wear-resistant layer; 43. heat-resistant bump; 5. fixing mechanism; 51. plug; 52. rubber ring; 53. vent; 54. reinforcement ring. DETAILED DESCRIPTION

[0030] 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.

[0031] The utility model provides Figure 1-3 The illustrated embodiment of a heat-resistant automotive high-voltage wire harness comprises: a wire harness body 1, a first protective mechanism 2 is arranged outside the high-temperature region of the wire harness body 1, the first protective mechanism 2 comprises: a flame-retardant sheath 21, a plurality of rubber rings 22 and a plurality of vents 23, the flame-retardant sheath 21 is sleeved on the outside of the wire harness body 1, the flame-retardant sheath 21 has a flame-retardant and heat-insulating function, and is convenient for heat-insulating protection of the outside of the high-temperature region of the wire harness body 1, a plurality of rubber rings 22 are equidistantly fixed on the inner wall of the flame-retardant sheath 21, through the rubber ring 22, the contact area with the wire harness body 1 is reduced, so that the heat of the outer wall of the wire harness body 1 can be normally dissipated, and at the same time, the stable sleeve of the flame-retardant sheath 21 outside the wire harness body 1 is not affected, the inner wall of the rubber ring 22 is fitted with the outer wall of the wire harness body 1, and a plurality of vents 23 are staggered in the middle of the plurality of rubber rings 22, through the vents 23, the heat of the wire harness body 1 itself can stably flow on the surface, and the heat accumulation of the outer wall of the wire harness body 1 is reduced;

[0032] Furthermore, a reinforcement mechanism 3 is provided on the outside of the first protective mechanism 2, and the reinforcement mechanism 3 includes: a mesh sleeve 31, a first insulating sleeve 32, a second insulating sleeve 33 and a heat insulation film 34. The mesh sleeve 31 is provided on the outside of the first protective mechanism 2, and the mesh sleeve 31 is woven from a metal mesh, which is convenient for improving the protective performance of the outer wall of the wiring harness body 1 and reducing the extrusion damage of the outer wall of the wiring harness body 1. The first insulating sleeve 32 and the second insulating sleeve 33 are respectively fixed to the inner wall and the outer wall of the mesh sleeve 31. The first insulating sleeve 32 and the second insulating sleeve 33 are both made of borosilicate rubber, which can prevent the mesh sleeve 31 from The hard material can prevent the heat insulation film 34 and the flame retardant sheath 21 from being squeezed and damaged. The borosilicate rubber material also has high strength and high temperature resistance, and can protect the exterior of the wiring harness body 1 for a long time at 400°C. The heat insulation film 34 is fixed to the inner wall of the first insulating sleeve 32, and the first protection mechanism 2 is arranged in the inner cavity of the heat insulation film 34. The heat insulation film 34 is fitted and fixed to the outer wall of the flame retardant sheath 21, and the inner cavities of the multiple vents 23 are connected. Through the heat insulation film 34, it is convenient to isolate the influence of external hot air on the wiring harness body 1 again, thereby improving the protection performance of the wiring harness body 1 in high temperature areas;

[0033] Further, the outer wall of the second insulating sleeve 33 is provided with a second protective mechanism 4, and the second protective mechanism 4 includes: an insulating sleeve 41, a wear-resistant layer 42 and a plurality of heat-resistant protrusions 43, the insulating sleeve 41 is fixed to the outer wall of the second insulating sleeve 33, the wear-resistant layer 42 is fixed to the outer wall of the insulating sleeve 41, the wear-resistant layer 42 can enhance the wear resistance of the outer wall of the wiring harness body 1, and the plurality of heat-resistant protrusions 43 are fixed to the outer wall of the wear-resistant layer 42 in an annular array at equal distances. Through the setting of the heat-resistant protrusions 43, the outer wall of the wiring harness body 1 and the outer wall of the insulating sleeve 41 are prevented from directly touching the high-temperature object, and the high-temperature object in the high-temperature area of ​​the car is reduced. The outer wall of the wiring harness body 1 and the outer wall of the insulating sleeve 41 are scalded by the contact;

[0034] Furthermore, the ends of the second protective mechanism 4 are provided with a fixing mechanism 5, which includes: a plug 51, a rubber ring 52, a plurality of air holes 53 and a reinforcement ring 54. The plug 51 is arranged at the end of the insulating sheath 41, and the rubber ring 52 is fixed to the inner wall of the plug 51. The inner wall of the rubber ring 52 fits with the outer wall of the wiring harness body 1, so that the plug 51 can stably clamp the first protective mechanism 2, the reinforcement mechanism 3 and the second protective mechanism 4 on the high temperature area of ​​the wiring harness body 1, and the plug 51 is arranged at a non-high temperature area. In the regional position, multiple air holes 53 are opened in a circular array on the outer wall of the plug 51. Through the air holes 53, the gas flowing in the vent 23 can be stably released through the air holes 53 on the plug 51. The reinforcement ring 54 is fixed to the outer wall of the plug 51. The reinforcement ring 54 is fixed to the outer wall of the insulating sheath 41 through the wear-resistant layer 42. The reinforcement ring 54 improves the stability of the position of the plug 51 and the insulating sheath 41, improves the protection performance of the wiring harness body 1 in the high temperature area, and improves the service life of the wiring harness body 1.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat-resistant automotive high-voltage wire harness, comprising: A wiring harness body (1), characterized in that a first protection mechanism (2) is arranged outside a high temperature area of ​​the wiring harness body (1), a reinforcement mechanism (3) is arranged outside the first protection mechanism (2), and the reinforcement mechanism (3) comprises: A mesh sleeve (31), wherein the mesh sleeve (31) is arranged outside the first protection mechanism (2); A first insulating sleeve (32) and a second insulating sleeve (33), wherein the first insulating sleeve (32) and the second insulating sleeve (33) are respectively fitted and fixed to the inner wall and the outer wall of the mesh sleeve (31), the outer wall of the second insulating sleeve (33) is provided with a second protective mechanism (4), and the ends of the second protective mechanism (4) are provided with a fixing mechanism (5); A heat insulation film (34), wherein the heat insulation film (34) is fixed to the inner wall of the first insulating sleeve (32), and the first protective mechanism (2) is arranged in the inner cavity of the heat insulation film (34).

2. The automotive high-voltage wire harness with heat resistance function according to claim 1, characterized in that: The first protection mechanism (2) comprises: A flame retardant sheath (21), wherein the flame retardant sheath (21) is sleeved on the outside of the wiring harness body (1); A plurality of rubber rings (22), wherein the plurality of rubber rings (22) are fixed at equal distances to the inner wall of the flame-retardant sheath (21), and the inner wall of the rubber ring (22) is in contact with the outer wall of the wiring harness body (1); A plurality of vent holes (23) are arranged in a staggered manner in the middle of the plurality of rubber rings (22).

3. The automotive high-voltage wire harness with heat resistance function according to claim 2, characterized in that: The heat insulation film (34) is fitted and fixed to the outer wall of the flame retardant sheath (21), and the inner cavities of the plurality of vent holes (23) are in communication.

4. The automotive high-voltage wire harness with heat resistance function according to claim 2, characterized in that: The second protection mechanism (4) comprises: An insulating sheath (41), wherein the insulating sheath (41) is fixed to the outer wall of the second insulating sheath (33); A wear-resistant layer (42), wherein the wear-resistant layer (42) is fixed to the outer wall of the insulating sheath (41); A plurality of heat-resistant protrusions (43) are fixed to the outer wall of the wear-resistant layer (42) at equal intervals in a ring array.

5. The automotive high-voltage wire harness with heat resistance function according to claim 4, characterized in that: The fixing mechanism (5) comprises: A plug (51), wherein the plug (51) is arranged at an end of the insulating sheath (41); A rubber ring (52), wherein the rubber ring (52) is fixed to the inner wall of the plug (51); A plurality of air holes (53), wherein the plurality of air holes (53) are arranged in a circular array on the outer wall of the plug (51); A reinforcement ring (54), wherein the reinforcement ring (54) is fixed to the outer wall of the plug (51).

6. The automotive high-voltage wire harness with heat resistance function according to claim 5, characterized in that: The reinforcement ring (54) is fixed to the outer wall of the insulating sheath (41) via the wear-resistant layer (42), and the inner wall of the rubber ring (52) is in contact with the outer wall of the wiring harness body (1).

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