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CN-224233320-U - Sealing connection device for new energy automobile wire harness

CN224233320UCN 224233320 UCN224233320 UCN 224233320UCN-224233320-U

Abstract

The utility model discloses a sealing connection device for a wire harness of a new energy automobile, which comprises a heat shrinkage sleeve, a rubber plug, an external thread bushing, a ventilation cover, a supporting rib net and a plurality of ventilation holes, wherein one end of the heat shrinkage sleeve is provided with a closing end with a smaller pipe diameter, the rubber plug is arranged in the closing end, the external thread bushing is adhered to the closing end, the cross section of the external thread bushing is U-shaped and is clamped at the closing end, the ventilation cover is connected with the external thread bushing through threads, the supporting rib net is arranged inside the ventilation cover, a waterproof ventilation film is welded on the outer side of the supporting rib net, and the ventilation cover is provided with a plurality of ventilation holes at one end which is positioned outside the waterproof ventilation film. According to the utility model, the heat shrinkage sleeve is designed by three layers, the outer layer is shaped at low temperature, the inner layer is sealed after being at high temperature, so that staged shrinkage is realized, and wrinkles caused by stress concentration are avoided. The middle layer is provided with a conductive copper mesh wire, so that electromagnetic shielding is improved. The end of the heat shrinkage sleeve is closed, the outer end of the wire harness is stable, the inner rubber plug is positioned in an anti-skid mode, the air permeable cover is arranged on the outer thread, the waterproof air permeable film in the air permeable cover is utilized to release balanced air pressure, and the wire harness is waterproof and breathable and good in sealing performance.

Inventors

  • GU WEIKAI

Assignees

  • 江苏华凯比克希线束有限公司

Dates

Publication Date
20260512
Application Date
20250429

Claims (6)

  1. 1. The utility model provides a new energy automobile is sealing connection device for pencil which characterized in that includes: The heat-shrinkable sleeve is provided with three layers, including an outer polyolefin layer, a middle copper mesh wire layer and an inner fluorine rubber layer, and one end of the heat-shrinkable sleeve is provided with a closing end with a smaller pipe diameter; The rubber plug is arranged in the closing end; The external thread bushing is adhered to the closing end, the cross section of the external thread bushing is U-shaped, and the external thread bushing is clamped at the closing end; The breathable cover is connected with the external thread bushing through threads, a supporting rib net is arranged inside the breathable cover, a waterproof breathable film is welded on the outer side of the supporting rib net, and a plurality of ventilation holes are formed in one end, located outside the waterproof breathable film, of the breathable cover.
  2. 2. The sealing connection device for a wire harness of a new energy automobile according to claim 1, wherein a receiving column is fixed at the center of the inner side of the support rib net, a through hole is formed in the surface of the receiving column, a drying agent is arranged in the receiving column, and the receiving column is led into the closing end and is spaced from the rubber plug.
  3. 3. The sealing connection device for a wire harness of a new energy automobile according to claim 1, wherein the rubber plug is interference fit with the wire harness.
  4. 4. The sealing and connecting device for a wire harness of a new energy automobile according to claim 1, wherein the inner wall of the heat shrink sleeve is axially provided with a plurality of kidney-shaped grooves.
  5. 5. The sealing connection device for a wire harness of a new energy automobile according to claim 1, wherein the waterproof breathable film is provided as a polytetrafluoroethylene film.
  6. 6. The sealing connection device for a wire harness of a new energy automobile according to claim 1, wherein the rubber stopper has a thickness of 1-2mm.

Description

Sealing connection device for new energy automobile wire harness Technical Field The utility model belongs to the technical field of automobile wire harnesses, and particularly relates to a sealing connection device for a new energy automobile wire harness. Background Along with the popularization of new energy, more and more automobiles select new energy as power, and the new energy automobiles need to be equipped with a plurality of wire harnesses which are divided into high-voltage wire harnesses and low-voltage wire harnesses, and in the production, transportation and storage process of the automobile wire harnesses, in order to ensure that the conditions of releasing the air pressure, humidity and the like in the wire harnesses are simultaneously considered in the waterproof early stage, the end parts of the wire harnesses need to be sealed and protected, and the sealing means that the wire harnesses are waterproof, dampproof and sealed and breathable. In the past, the heat-shrinkable tube is simply coated, and the heat-shrinkable tube is matched with the adhesive tape, but the waterproof and air-permeable properties are poor. The waterproof breathable cap is also adopted to be sleeved with the silica gel, the installation is troublesome, the corresponding bottom shell is needed to be selected, the adaptability is very poor, the sleeve is needed to be added to install the breathable cap, and the overall applicability is poor. Therefore, a convenient airtight connection device capable of ensuring the sealing, waterproofing and ventilation of the end part of the wire harness is urgently needed at present. Disclosure of utility model In view of the above, the technical problem to be solved by the utility model is to provide a sealing connection device for a new energy automobile wire harness, which is used for avoiding the trouble that the waterproof and air permeability of the interior of the existing automobile wire harness are poor due to the lack of an effective sealing connection device when the existing automobile wire harness is transported. In order to solve the technical problems, the utility model discloses a sealing connection device for a new energy automobile wire harness, which comprises: The heat-shrinkable sleeve is provided with three layers, including an outer polyolefin layer, a middle copper mesh layer and an inner fluorine rubber layer, and one end of the heat-shrinkable sleeve is provided with a closing end with a smaller pipe diameter; a rubber plug arranged in the closing end; the external thread bushing is adhered to the closing end, the cross section of the external thread bushing is U-shaped, and the external thread bushing is clamped at the closing end; The breathable cover is connected with the external thread bushing through threads, a supporting rib net is arranged inside the breathable cover, a waterproof breathable film is welded on the outer side of the supporting rib net, and a plurality of ventilation holes are formed in one end, located outside the waterproof breathable film, of the breathable cover. According to an embodiment of the present utility model, the center of the inner side of the supporting rib net is fixed with a receiving column, the surface of the receiving column is provided with a through hole, a drying agent is placed in the receiving column, and the receiving column is led into the closing end and is spaced from the rubber plug. According to an embodiment of the present utility model, the rubber plug is in interference fit with the wire harness. According to an embodiment of the present utility model, the inner wall of the heat shrinkable sleeve is axially provided with a plurality of kidney-shaped grooves. According to an embodiment of the present utility model, the waterproof breathable film is a polytetrafluoroethylene film. According to an embodiment of the present utility model, the rubber stopper has a thickness of 1-2mm. Compared with the prior art, the utility model can obtain the following technical effects: Through three-layer design heat shrinkage sleeve, the outer layer adopts polyolefin shrink temperature 70 ℃, and the inlayer adopts fluororubber shrink temperature 90 ℃, and outer low temperature is the design earlier, and inlayer high temperature is sealed afterwards, realizes stage shrink, avoids the fold that stress concentration leads to. The middle layer is provided with a conductive copper mesh wire, so that electromagnetic shielding is improved. The end of the heat shrinkage sleeve is closed, the outer end of the wire harness is stable, the inner rubber plug is positioned in an anti-skid mode, the air permeable cover is arranged on the outer thread, the waterproof air permeable film in the air permeable cover is utilized to release balanced air pressure, and the wire harness is waterproof and breathable and good in sealing performance. A drying agent is arranged in the ventilation cover, can prevent moisture. Of course, it is not