Firewall rubber part and vehicle

Abstract

The invention provides a firewall rubber part which comprises a wire harness guide pipe and a main body arranged on the wire harness guide pipe in a sleeving mode, a sound insulation structure is arranged on the main body, and the wire harness guide pipe and the main body are integrally formed and are both made of rubber.The firewall rubber part is low in weight and high in strength and stability; and a good sound insulation effect can be provided, and good driving experience is brought to passengers in a cockpit.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle firewall rubber parts, and in particular, to a firewall rubber part and a vehicle. Background Art

[0002] The vehicle firewall rubber part is a rubber isolation part located between the engine compartment and the vehicle cab. Its main function is to act as a barrier to prevent the fire, heat, noise, dust and moisture in the engine compartment from spreading or being transmitted to the cab, thereby ensuring the safety and comfort of the passengers in the vehicle. A guide tube or guide structure is usually provided on the firewall rubber part to facilitate the wiring harness to pass through the firewall rubber part to achieve the connection between the two compartments.

[0003] The known firewall rubber part is mainly composed of two parts, rubber and a plastic frame, and in addition, a guide tube and a guide structure made of other materials are additionally provided for the wire harness to pass through.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] One aspect of the present application is to solve a technical problem of how to reduce the weight of the firewall rubber part and improve its sound insulation effect while ensuring the performance of the firewall rubber part.

[0006] In addition, other aspects of the present application are also intended to solve or alleviate other technical problems existing in the prior art.

[0007] The present application provides a firewall rubber component and a vehicle. Specifically, according to one aspect of the present application, the present application provides:

[0008] A firewall rubber part includes a wire harness guide tube and a main body sleeved on the wire harness guide tube, a sound insulation structure is arranged on the main body, and the wire harness guide tube and the main body are integrally formed and both are made of rubber.

[0009] Optionally, according to an embodiment of the present application, the main body is made of silicone rubber added with 5%-15% asbestos fiber.

[0010] Optionally, according to one embodiment of the present application, the main body includes a honeycomb sound insulation structure and a limiting wall surrounding the sound insulation structure, an annular abutment portion protrudes from the limiting wall, and an annular snap-in groove is formed between the abutment portion and the limiting wall, which is used to snap into the mounting hole of the vehicle sheet metal part when installing the firewall rubber part.

[0011] Optionally, according to an embodiment of the present application, three sound-absorbing layers are arranged between the limiting wall and the sound insulation structure, and along the direction from the limiting wall to the sound insulation structure, the three sound-absorbing layers are made of glass fiber wool, polyurethane foam and slag wool, respectively.

[0012] Optionally, according to an embodiment of the present application, the limiting wall includes an installation wall section and a guide wall section arranged in front of the installation wall section along the installation direction of the firewall rubber member, the installation wall section and the guide wall section are both annular, the abutment portion is arranged on the installation wall section, and the inner diameter of the guide wall section gradually decreases along the installation direction.

[0013] Optionally, according to an embodiment of the present application, an aluminum foil is provided on the outer peripheral surface of the abutting portion.

[0014] Optionally, according to an embodiment of the present application, a plurality of elliptical holes are provided on the guide wall section along its circumferential direction.

[0015] Optionally, according to one embodiment of the present application, four groups of elliptical holes are arranged on the guide wall segment along its circumferential direction, and each two adjacent groups of elliptical holes have the same angular spacing along the circumferential direction, and each group of elliptical holes includes four elliptical holes arranged along the circumferential direction of the guide wall segment, and each two adjacent elliptical holes in each group of elliptical holes have the same angular spacing along the circumferential direction.

[0016] Optionally, according to an embodiment of the present application, the wire harness guide tube includes a first tube section arranged along the horizontal direction of the vehicle and a second tube section bent relative to the first tube section, and the main body is sleeved on the first tube section.

[0017] According to another aspect of the present application, the present application provides a vehicle, wherein the vehicle includes the firewall rubber member described above, the firewall rubber member is installed in a mounting hole of a sheet metal member between an engine compartment and a cab, and a wiring harness of the engine compartment enters the cab through the wiring harness guide tube.

[0018] Benefits of this application include:

[0019] 1. The main body and the guide tube of the firewall rubber part of the present application are integrally formed and are both made of rubber, realizing an integrated pure rubber design without the need for a plastic frame, thereby greatly reducing the weight of the rubber part;

[0020] 2. The main body of the firewall rubber part of the present application is made of silicone rubber with asbestos fiber added, which reduces the overall weight while also ensuring the strength and stability of the main body of the rubber part;

[0021] 3. The firewall rubber part of the present application improves the sound insulation effect of the rubber part through a double sound insulation method of a sound insulation structure plus three layers of sound insulation layers, and an aluminum foil reflective surface is also provided on the main body to reflect noise, further reducing the propagation of noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] With reference to the accompanying drawings, the above and other features of the present application will become apparent. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the drawings are used to represent similar components, among which,

[0023] Figure 1 A schematic structural diagram of a firewall rubber member proposed according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0024] It is easy to understand that according to the technical solution of the present application, without changing the essential spirit of the present application, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the entirety of the present application or as a limitation or restriction on the technical solution of the present application.

[0025] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage states. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", "third", etc. or similar expressions are only used for description and distinction purposes, and cannot be understood as indicating or implying the relative importance of the corresponding components or the order or assembly order of the components.

[0026] refer to Figure 1 , which shows a schematic structural diagram of a firewall rubber member 100 proposed according to an embodiment of the present application. The firewall rubber member 100 is disposed between the vehicle engine compartment and the vehicle cab, and in particular, is disposed on a sheet metal member between the vehicle engine compartment and the vehicle cab. A mounting hole is provided on the sheet metal member, and the firewall rubber member 100 closes the mounting hole to isolate noise, heat, etc. from the engine compartment. The firewall rubber member 100 includes a wire harness guide tube 110 and a main body 120 sleeved on the wire harness guide tube 110. The main body 120 is installed in the above-mentioned mounting hole to close the mounting hole. The wire harness guide tube 110 is used to provide a connection channel and guide for the wire harness connected from the engine compartment to the vehicle cab. For the convenience of expression, Figure 1The direction from left to right in the figure is defined as the installation direction of the firewall rubber member 100, and the firewall rubber member 100 is installed from the cab to the installation hole of the vehicle sheet metal part through this installation direction, and after the installation is completed, a part of it is in the cab and a part of it is in the engine compartment.

[0027] In one embodiment of the present application, the wire harness guide tube 110 and the main body 120 are integrally formed and are both made of rubber. In this embodiment, there is no need to set a plastic bracket in the firewall rubber part 100, nor is there a need to separate the wire harness guide tube 110 from the main body 120. In this way, the weight of the firewall rubber part 100 is reduced and the manufacturing cost is saved. In one embodiment of the present application, the main body 120 and the wire harness guide tube 110 are made of an integrally vulcanized double-layer EPDM (EthylenePropylene Diene Monomer) material.

[0028] In one embodiment of the present application, the main body 120 is made of silicone rubber added with 5%-15% asbestos fiber, and the density of the silicone rubber is, for example, 0.8 g / cm 3 It not only has low density, but also has good heat resistance and aging resistance. By adding asbestos fiber, the main body 120 is reduced in weight while the strength and stability are also improved.

[0029] In one embodiment of the present application, the sound insulation structure 121 is configured as a honeycomb structure, and is arranged around the outer wall of the harness guide tube 110. The sound insulation structure 121 is limited by a limiting wall 122 surrounding it. An annular abutment portion 123 protruding from the limiting wall 122 is configured on the limiting wall 122. When the firewall rubber member 100 is installed in the mounting hole of the vehicle sheet metal, the abutment portion 123 abuts against the vehicle sheet metal in the cab to play a sealing and sound insulation role. An annular snap-in groove 124 is formed between the abutment portion 123 and the limiting wall 122, which is snapped onto the periphery of the mounting hole to reinforce the fixation of the firewall rubber member 100 to the mounting hole.

[0030] In one embodiment of the present application, three sound absorbing layers are provided between the limiting wall 122 and the sound insulation structure 121 (in Figure 1 (not shown), along the radial direction from the limiting wall 122 to the sound insulation structure 121, the three sound absorption layers are respectively made of glass fiber wool, polyurethane foam and slag wool. These three materials can absorb noises of different frequency bands, thereby achieving the noise reduction effect of the firewall rubber part 100 in the full frequency band. Through the noise reduction method of the sound insulation structure 121 plus the three sound absorption layers, the firewall rubber part 100 can provide a good noise reduction effect for noises of various frequency bands, thereby improving the driving experience of passengers in the cab.

[0031] In one embodiment of the present application, the limiting wall 122 includes a mounting wall section 101 and a guide wall section 102 connected to the mounting wall section 101 along the mounting direction of the firewall rubber member 100. The mounting wall section 101 and the guide wall section 102 are both annular. The above-mentioned abutment portion 123 is arranged on the mounting wall section 101, and the inner diameter of the guide wall section 102 gradually decreases along the mounting direction. When the firewall rubber member 100 is installed in the mounting hole of the vehicle sheet metal part, the mounting wall section 101 is in the cab, and the guide wall section 102 passes through the mounting hole and is in the engine compartment. The gradually decreasing inner diameter of the guide wall section 102 along the mounting direction provides a guide for the installation, reduces the difficulty of installing the firewall rubber member 100, and enables it to be installed in the mounting hole more easily and accurately.

[0032] In one embodiment of the present application, an aluminum foil 103 is provided on the outer circumference of the abutting portion 123. The aluminum foil 103 can be used to reflect noise. The aluminum foil 103 is provided on the outer circumference of the abutting portion 123, so that a part of the noise leaking through the installation gap between the firewall rubber member 100 and the installation hole can be reflected back, thereby further optimizing the sound insulation effect.

[0033] In one embodiment of the present application, a plurality of elliptical holes 125 are provided along the circumferential direction of the guide wall segment 102. The guide wall segment 102 may be squeezed and deformed during installation, and the elliptical holes 125 are provided to enable the guide wall segment 102 to quickly restore its shape after installation, so that the firewall rubber member 100 can better seal the installation hole. Figure 1 In the embodiment, four groups of elliptical holes 125 are provided on the guide wall section 102 along the circumferential direction thereof, and each adjacent group of elliptical holes 125 has the same angular spacing along the circumferential direction. Each group of elliptical holes 125 includes four elliptical holes 125 arranged along the circumferential direction of the guide wall section 102, and each adjacent two elliptical holes 125 in each group of elliptical holes 125 have the same angular spacing along the circumferential direction. By providing four groups of elliptical holes 125, after the firewall rubber member 100 is installed, the installer can simply touch or tap each group of holes in the four directions of up, down, left, and right to quickly restore the guide wall section 102 to its original shape.

[0034] It should be understood that those skilled in the art can also set holes of different shapes, quantities and arrangements on the guide wall segment 102 according to the size of the guide wall segment 102 and the material thereof, which should also be included in the scope of the present application.

[0035] In one embodiment of the present application, the wire harness guide tube 110 includes a first tube section 111 arranged along the horizontal direction of the vehicle and a second tube section 112 bent relative to the first tube section 111, and the main body 120 is sleeved on the first tube section 111. The first tube section 111 and the second tube section 112 are particularly at an angle of 100°-110°, and the bending design of the guide tube 110 conforms to the actual direction of the wire harness and is conducive to the layout of the wire harness, and is convenient for the installation and maintenance of the wire harness.

[0036] Another aspect of the present application provides a vehicle, which includes the firewall rubber member 100 described above. The firewall rubber member 100 is installed in a mounting hole of a sheet metal member between an engine compartment and a cab. A wire harness of the engine compartment enters the cab through a wire harness guide tube 110 .

[0037] It should be understood that the firewall rubber member 100 of the present application can be installed on various vehicles, including cars, trucks, buses, hybrid vehicles, electric vehicles, etc. Therefore, the subject matter of the present application is also intended to protect various vehicles equipped with the firewall rubber member 100 of the present application.

[0038] It should be understood that all the above preferred embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present application should be within the legal protection scope of the present application.

Claims

1. A fire wall rubber part, characterized in that: The utility model comprises a wire harness guide tube and a main body sleeved on the wire harness guide tube, a sound insulation structure is arranged on the main body, and the wire harness guide tube and the main body are integrally formed and are both made of rubber.

2. The fire wall rubber member according to claim 1, characterized in that: The main body is made of silicone rubber added with 5%-15% asbestos fiber.

3. The fire wall rubber member according to claim 1, characterized in that: The main body includes a honeycomb sound insulation structure and a limiting wall surrounding the sound insulation structure. An annular abutment portion protrudes from the limiting wall, and an annular clamping groove is formed between the abutment portion and the limiting wall for clamping into the mounting hole of the vehicle sheet metal part when installing the firewall rubber part.

4. The fire wall rubber member according to claim 3, characterized in that: Three sound-absorbing layers are arranged between the limiting wall and the sound insulation structure. Along the direction from the limiting wall to the sound insulation structure, the three sound-absorbing layers are made of glass fiber wool, polyurethane foam and slag wool respectively.

5. The fire wall rubber member according to claim 3, characterized in that: The limiting wall includes a mounting wall section and a guide wall section arranged in front of the mounting wall section along the mounting direction of the firewall rubber member, the mounting wall section and the guide wall section are both annular, the abutment portion is arranged on the mounting wall section, and the inner diameter of the guide wall section gradually decreases along the mounting direction.

6. The fire wall rubber member according to claim 3, characterized in that: An aluminum foil is arranged on the outer peripheral surface of the abutting portion.

7. The fire wall rubber member according to claim 5, characterized in that: A plurality of elliptical holes are arranged on the guide wall section along its circumferential direction.

8. The fire wall rubber member according to claim 7, characterized in that: Four groups of elliptical holes are arranged on the guide wall segment along its circumferential direction, and each two adjacent groups of elliptical holes have the same angular spacing along the circumferential direction. Each group of elliptical holes includes four elliptical holes arranged along the circumferential direction of the guide wall segment, and each two adjacent elliptical holes in each group of elliptical holes have the same angular spacing along the circumferential direction.

9. The fire wall rubber member according to claim 1, characterized in that: The wire harness guide tube includes a first tube section arranged in a horizontal direction of a vehicle and a second tube section bent relative to the first tube section, and the main body is mounted on the first tube section.

10. A vehicle, characterized in that: The vehicle comprises the firewall rubber member according to any one of claims 1 to 9, the firewall rubber member being installed in a mounting hole of a sheet metal member between an engine compartment and a cab, and a wire harness of the engine compartment enters the cab through the wire harness guide tube.

Images