Waterproof and soundproof rubber assembly for wire harness

Abstract

The utility model discloses a waterproof and sound-proof rubber assembly for wire harnesses, which comprises a cockpit wire outlet pipe, two symmetrical wire harness fixing sheets are fixed at the lower end of the cockpit wire outlet pipe, a rubber compression edge is fixed at the upper end of the cockpit wire outlet pipe, and an engine compartment wire outlet pipe is fixed at the upper end of the rubber compression edge. The cockpit wire outlet pipe is communicated with the engine compartment wire outlet pipe, an assembly direction mark is fixed to the outer wall of the rubber compression edge, a plurality of sound insulation pieces are fixed to the upper end of the rubber compression edge along the circumference of the rubber compression edge, the sound insulation pieces are evenly distributed on the rubber compression edge, and fixing rings are arranged on the inner walls of ports of the cockpit wire outlet pipe and the engine compartment wire outlet pipe respectively. The fan-shaped sheet-shaped structure of the sound insulation sheet is additionally arranged to be matched with the surrounding environment, so that the rubber part, the automobile body metal plate hole and the surrounding environment are effectively combined together, the rubber part is assembled to the required position, and the problem that an elastic rubber part is not easy to assemble in the environment with a small assembling space is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle front cabin wiring harness rubber parts, in particular to a wiring harness waterproof and sound-insulating rubber component. Background Art

[0002] Wire harness rubber parts refer to elastic rubber parts used in the through-holes of the body sheet metal to ensure good wire harness protection, smooth wire harness transition and other performance when the wire harness passes through the sheet metal or is assembled to the sheet metal. Because the car engine will generate noise during operation, but the cockpit needs to be quiet, the wire harness needs to be perforated in the middle sheet metal when connecting the engine compartment and the cockpit. Therefore, the rubber parts here not only protect the wire harness but also need to block noise. In traditional designs, NVH is usually achieved by increasing the thickness of the rubber parts. In previous designs, there was a difficulty in using rubber parts for such products. By increasing the thickness, the product would be bulky, costly, and difficult to assemble, and the noise blocking effect was not very good. Utility Model Content

[0003] In response to the above problems, the utility model provides a rubber component for wiring harness waterproof and soundproofing; its structure can effectively avoid the assembly difficulties caused by the bulky product, while ensuring a better noise blocking effect, achieving a relatively ideal structure for adapting wiring harnesses, and effectively solving the requirements of rubber parts protecting wiring harnesses, blocking dry and wet areas (sealing) and blocking noise.

[0004] To achieve the stated purpose, the present invention provides the following technical solutions: a rubber assembly for waterproof and soundproofing a wiring harness, comprising a cockpit wire outlet pipe, two symmetrical wire harness fixing plates being fixed to the lower end of the cockpit wire outlet pipe, a rubber compression edge being fixed to the upper end of the rubber compression edge, an engine compartment wire outlet pipe being fixed to the upper end of the rubber compression edge, the cockpit wire outlet pipe being connected to the engine compartment wire outlet pipe, an assembly direction mark being fixed to the outer wall of the rubber compression edge, a plurality of sound insulation plates being fixed to the upper end of the rubber compression edge along its circumference, the sound insulation plates being evenly distributed on the rubber compression edge, and fixing rings being provided on the inner walls of the ports of the cockpit wire outlet pipe and the engine compartment wire outlet pipe respectively.

[0005] Preferably, a U-shaped fixing ring groove is provided on the outer wall of the connection between the cockpit wire outlet pipe and the wire harness fixing plate, the upper end of the U-shaped fixing ring groove is tightened, a first sealing ring is fixed to the inner lower end of the fixing ring groove, and a second sealing ring is fixed to the side wall of the inner side of the fixing ring groove close to the rubber compression edge.

[0006] Preferably, the sound insulation piece is fan-shaped, one end of the long arc of the fan-shaped sound insulation piece is fixedly connected to the rubber compression edge, and one end of the short arc of the fan-shaped sound insulation piece is retracted and brought closer to each other.

[0007] Preferably, the lower ends of the two wire harness fixing plates are bent outward to form folded edges.

[0008] Preferably, the cross section of the rubber compression edge is an inverted V shape, and the cockpit wire outlet pipe, the wire harness fixing plate, the rubber compression edge, the engine compartment wire outlet pipe and the fixing ring are integrally formed.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0010] 1. By adding a fan-shaped sheet structure of the sound insulation sheet to cooperate with the surrounding environment, the rubber part, the body sheet metal hole and the surrounding environment are effectively combined together, and the rubber part is assembled to the required position, effectively avoiding the problem that elastic rubber parts are difficult to assemble in an environment with a small assembly space. At the same time, the rubber part guides the direction of the wiring harness, protects the wiring harness, blocks the dry and wet areas, and blocks noise in the functional area. The sound insulation sheet increases the sound wave transmission distance during the sound wave transmission process, reduces noise transmission through the vibration of the sound insulation sheet, and achieves the effect of blocking noise.

[0011] 2. This structure enables the transmission of electrical signals through holes in the sheet metal from the engine compartment to the cockpit without affecting the sealing of dry and wet areas and the noise. It protects the wiring harness, guides the wiring harness, and blocks the sealing of dry and wet areas and the noise during the transmission of electrical signals from the engine compartment to the cockpit. At the same time, it improves assembly reliability during the vehicle installation process at the OEM. By tightly snapping the fixing ring groove, the first sealing ring and the second sealing ring into the opening in the sheet metal, the sealing from the engine compartment to the cockpit is achieved, effectively blocking the dry and wet areas and the noise in the engine compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0014] Figure 3 It is a cross-sectional schematic diagram of the present utility model.

[0015] Explanations in the figure: 1. Cockpit outlet pipe; 2. Wire harness fixing plate; 3. Rubber compression edge; 4. Engine compartment outlet pipe; 5. Fixing ring; 6. Fixing ring groove; 21. Folding edge; 31. Assembly direction mark; 32. Sound insulation plate; 61. First sealing ring; 62. Second sealing ring. DETAILED DESCRIPTION

[0016] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] See also Figure 1 、 Figure 2 and Figure 3 A waterproof and soundproof rubber component for wiring harnesses includes a cockpit outlet pipe 1, the lower end of which is fixed with two symmetrical wiring harness fixing plates 2. The lower ends of the two wiring harness fixing plates 2 are bent outward with folded edges 21. The upper end of the cockpit outlet pipe 1 is fixed with a rubber compression edge 3. The cross section of the rubber compression edge 3 is an inverted V shape. By setting the rubber compression edge 3 in an inverted V shape, the component can be adsorbed and fixed on the sheet metal. When the structure is fixed to the opening of the sheet metal from the engine compartment to the cockpit, the rubber The compression edge 3 is close to the sheet metal to play a role in sound insulation. The upper end of the rubber compression edge 3 is fixed with an engine compartment outlet pipe 4, and the cockpit outlet pipe 1 is connected to the engine compartment outlet pipe 4. The outer wall of the rubber compression edge 3 is fixed with an assembly direction mark 31, and the assembly direction mark 31 is used to indicate the direction of installation, which effectively reduces the occurrence of reverse installation of the component. The upper end of the rubber compression edge 3 is fixed with multiple sound insulation sheets 32 along its circumference. By adding the fan-shaped sheet structure of the sound insulation sheet 32 ​​and the surrounding environment The rubber part is effectively combined with the body sheet metal hole and the surrounding environment, so that the rubber part is assembled to the required position, effectively avoiding the problem that the elastic rubber part is difficult to assemble in an environment with a small assembly space. At the same time, the rubber part plays a role in guiding the direction of the wiring harness, protecting the wiring harness, blocking the dry and wet area seals and blocking noise in the functional area. The sound insulation piece 32 is evenly distributed on the rubber compression edge 3, and the inner walls of the ports of the cockpit wire outlet pipe 1 and the engine compartment wire outlet pipe 4 are respectively provided with a fixing ring 5. Through this structure, it is realized that the hole in the sheet metal from the engine compartment to the cockpit is used to transmit electrical signals without affecting the problem of blocking the dry and wet area seals and blocking noise. It plays a role in protecting the wiring harness, guiding the direction of the wiring harness, blocking the dry and wet area seals and blocking noise in the process of electrical signal transmission from the engine compartment to the cockpit, and at the same time improving the assembly reliability during the installation process of the main engine factory. The cockpit wire outlet pipe 1, wire harness fixing piece 2, rubber compression edge 3, engine compartment wire outlet pipe 4 and fixing ring 5 are integrally formed, which reduces the processing technology and is conducive to mass production.

[0018] See also Figure 1 、 Figure 2 and Figure 3The outer wall of the connection between the cockpit outlet pipe 1 and the wiring harness fixing plate 2 is provided with a U-shaped fixed ring groove 6. The upper end of the U-shaped fixed ring groove 6 is tightened. The lower end of the inner side of the fixed ring groove 6 is fixed with a first sealing ring 61. The inner side of the fixed ring groove 6 is close to the side wall of the rubber compression edge 3. The second sealing ring 62 is fixed. The fixed ring groove 6, the first sealing ring 61 and the second sealing ring 62 are tightly snapped together and fit on the opening of the sheet metal, thereby achieving a seal from the engine compartment to the cockpit, effectively blocking the dry and wet areas. In order to solve the problem of blocking the noise in the engine compartment, the sound insulation piece 32 is fan-shaped, and one end of the long arc of the fan-shaped sound insulation piece 32 is fixedly connected to the rubber compression edge 3, and one end of the short arc of the fan-shaped sound insulation piece 32 is retracted and brought closer to each other. By setting the sound insulation piece 32 to be fan-shaped and the one end of the short arc of the fan-shaped sound insulation piece 32 is retracted and brought closer to each other, the sound insulation piece 32 increases the sound wave transmission distance during the sound wave transmission process, and reduces the noise transmission through the vibration of the sound insulation piece 32, thereby achieving the effect of blocking noise.

[0019] When using this utility model:

[0020] After the wiring harness fixing plate 2 is fixed to the wiring harness, the rubber compression edge 3 passes through the sheet metal hole from the engine compartment to the cockpit in the direction indicated by the assembly direction mark 31. The sound insulation plate 32 matches the surrounding environment of the engine compartment. The rubber compression edge 3 is adsorbed with the surrounding sheet metal to complete the assembly. The position of the sheet metal hole from the engine compartment to the cockpit will be clamped in the fixed ring groove 6. The first sealing ring 61 fits tightly with the inner wall of the sheet metal hole, and the second sealing ring 62 fits with the side of the sheet metal, realizing the sealing from the engine compartment to the cockpit, which plays the role of sealing the dry and wet areas and blocking noise.

[0021] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof and sound-insulating rubber component for wiring harnesses, characterized by: The invention comprises a cockpit wire outlet pipe (1), wherein two symmetrical wire harness fixing plates (2) are fixed to the lower end of the cockpit wire outlet pipe (1), a rubber compression edge (3) is fixed to the upper end of the cockpit wire outlet pipe (1), an engine compartment wire outlet pipe (4) is fixed to the upper end of the rubber compression edge (3), the cockpit wire outlet pipe (1) is communicated with the engine compartment wire outlet pipe (4), an assembly direction mark (31) is fixed to the outer wall of the rubber compression edge (3), a plurality of sound insulation plates (32) are fixed to the upper end of the rubber compression edge (3) along its circumference, and the sound insulation plates (32) are evenly distributed on the rubber compression edge (3), and the inner walls of the ports of the cockpit wire outlet pipe (1) and the engine compartment wire outlet pipe (4) are respectively provided with fixing rings (5).

2. The waterproof and sound-insulating rubber component for wiring harness according to claim 1, characterized in that: A U-shaped fixing ring groove (6) is provided on the outer wall of the connection between the cockpit outlet pipe (1) and the wiring harness fixing plate (2); the upper end of the U-shaped fixing ring groove (6) is tightened; a first sealing ring (61) is fixed to the inner lower end of the fixing ring groove (6); and a second sealing ring (62) is fixed to the inner side wall of the fixing ring groove (6) close to the rubber compression edge (3).

3. The waterproof and sound-insulating rubber component for wiring harness according to claim 1, characterized in that: The sound insulation piece (32) is fan-shaped, one end of the long arc of the fan-shaped sound insulation piece (32) is fixedly connected to the rubber compression edge (3), and one end of the short arc of the fan-shaped sound insulation piece (32) is contracted and brought closer together.

4. The waterproof and sound-insulating rubber component for wiring harness according to claim 1, characterized in that: The lower ends of the two harness fixing plates (2) are bent outward to form folded edges (21).

5. The waterproof and sound-insulating rubber component for wiring harness according to claim 1, characterized in that: The cross section of the rubber compression edge (3) is inverted V-shaped, and the cockpit outlet pipe (1), the wire harness fixing plate (2), the rubber compression edge (3), the engine compartment outlet pipe (4) and the fixing ring (5) are integrally formed.

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