Noise reduction device and vehicle

Abstract

The utility model provides a noise reduction device and a vehicle. The noise reduction device is used for wrapping the electrical element so as to reduce noise generated by the electrical element, and the electrical element comprises an element body and a connector arranged on the element body. The noise reduction device comprises a cover cap and a shell used for containing the element body. The cover cap comprises an inner side face and a containing cavity concavely arranged from the inner side face. The cover is arranged on the shell. At least part of the connector is arranged in the containing cavity. Through the arrangement, the noise generated by the electrical element can be effectively eliminated, the noise is prevented from being transmitted at the connector, and the noise reduction effect of the noise reduction device is improved.

Description

Technical Field

[0001] The present application relates to the field of transportation vehicles, and in particular to a noise reduction device and a vehicle. Background Art

[0002] With the rapid development of the automobile industry and the improvement of people's quality of life, there are higher requirements for the all-round performance of vehicles, and the comfort performance of vehicles is the focus of customers. As one of the important factors of vehicle comfort, the quietness of vehicles has also attracted much attention. The main sources of vehicle noise are the operation of tires, engines and various internal electrical components. In order to prevent noise from being transmitted to the passenger cabin, car companies usually install sound-absorbing materials to block noise.

[0003] In the prior art, in order to reduce the noise generated by the operation of electrical components, sound-absorbing cotton is usually attached to the electrical components. However, due to the cost, work efficiency and structure of the electrical components, manufacturers only attach sound-absorbing cotton to the main body of the electrical components, resulting in the connector of the electrical components being exposed, and the noise generated at the connector and the noise generated inside the electrical components will be transmitted to the outside through the connector position, reducing the sound-absorbing effect of the sound-absorbing cotton on the electrical components, thereby affecting the overall quietness of the vehicle.

[0004] Therefore, it is necessary to provide an improved noise reduction device to solve some or all of the above problems. Utility Model Content

[0005] The present application provides a noise reduction device and a vehicle with good sound insulation effect.

[0006] The present application provides a noise reduction device for wrapping an electrical component to reduce the noise generated by the operation of the electrical component, wherein the electrical component includes a component body and a connector arranged on the component body; the noise reduction device includes a cover and a shell for accommodating the component body; the cover includes an inner side surface and a accommodating cavity recessed from the inner side surface; the cover is arranged on the shell; at least part of the connector is arranged in the accommodating cavity.

[0007] Furthermore, the cover is detachably connected to the shell, and at least a portion of the cover is embedded in the shell.

[0008] Furthermore, the cover comprises a cover plate and an engaging block protruding from the cover plate; the inner side surface is located at the engaging block, and the accommodating cavity is at least arranged in the engaging block; and the engaging block is arranged in the shell.

[0009] Furthermore, the shell includes a limiting end surface and a limiting cavity recessed from the limiting end surface; the engaging block is arranged in the limiting cavity; the limiting end surface contacts the cover plate, and the inner side surface contacts the bottom wall of the limiting cavity.

[0010] Furthermore, the cover is provided with a wire groove; the wire groove extends from the side of the cover plate to the inside of the engaging block; the wire groove is communicated with the accommodating cavity.

[0011] Furthermore, the shell is provided with a communicating limiting cavity and a component cavity; the component body is located in the component cavity; at least a part of the cover is located in the limiting cavity, and the inner side surface contacts the bottom wall of the limiting cavity.

[0012] Furthermore, the shell is provided with a lower through hole and an avoidance hole which are communicated with the inner cavity of the shell, the lower through hole is provided on the bottom plate of the shell, and the avoidance hole is provided on the side plate of the shell.

[0013] Furthermore, in the height direction of the noise reduction device, the projection of the cover covers the projection of the shell; at least a portion of the shell is embedded in the cover.

[0014] Furthermore, the electrical component includes a hinge; one end of the hinge is connected to the cover, and the other end is connected to the shell, and the cover is rotatably arranged relative to the shell.

[0015] The present application also provides a vehicle, comprising an electrical component, a vehicle body, and the noise reduction device as described above, wherein the electrical component is arranged on the vehicle body, and the noise reduction device wraps the electrical component.

[0016] Compared with the prior art, the noise reduction device of the present application can effectively eliminate the noise generated by the electrical components by providing a cover body and a cover, and the cover body and the cover wrap the electrical components. In addition, the cover can effectively prevent the noise from propagating at the connector by providing a receiving cavity to accommodate the connector, thereby greatly eliminating the overall noise of the electrical components and improving the noise reduction effect of the noise reduction device.

[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0019] Figure 1 It is a three-dimensional diagram of the electrical components of the present application arranged in the noise reduction device.

[0020] Figure 2 yes Figure 1 Exploded view of the electrical components and noise reduction device.

[0021] Figure 3 It is an exploded view of the noise reduction device of the present application.

[0022] Figure 4 yes Figure 3 A perspective view of a cover in a noise reduction device.

[0023] Figure 5 It is a schematic diagram of another embodiment of the cover of the present application.

[0024] Figure 6 yes Figure 5 Schematic diagram of the cover being arranged on the shell.

[0025] Figure 7 It is a schematic diagram of another embodiment of the cover of the present application.

[0026] Figure 8 yes Figure 7 Schematic diagram of the cover being arranged on the shell.

[0027] Fig. 9 yes Figure 3 A perspective view of a housing in a noise reduction device.

[0028] Explanation of the accompanying drawings: 1-electrical component; 11-component body; 12-connector; 2-cover; 21-inner side; 22-accommodating cavity; 23-cover plate; 231-long side of the cover plate; 232-short side of the cover plate; 24-engaging block; 25-wire groove; 26-cover body; 27-surrounding edge; 3-shell; 31-limiting end face; 32-limiting cavity; 321-bottom wall of the limiting cavity; 33-component chamber; 34-lower through hole; 35-avoidance hole. DETAILED DESCRIPTION

[0029] like Figures 1 to 4 As shown, the noise reduction device of the present application is used to wrap the electrical component 1 to reduce the noise generated by the electrical component 1, thereby improving the user experience. The electrical component 1 includes a component body 11 and a connector 12. The connector 12 is arranged on the component body 11, and transmits electrical signals and electrical energy to the component body 11. The electrical component 1 is preferably but not limited to a relay. In the present application, the electrical component 1 is taken as a relay as an example for explanation. When the relay is working, vibration and noise will be generated due to the instantaneous attraction and separation of the internal electromagnet; in addition, the contacts of the relay will also generate arcs and noise when closing and disconnecting, and then these noises will affect some occasions that need to maintain a quiet environment (such as hospitals, laboratories, vehicle cabins, etc.). The noise reduction device of the present application wraps the above-mentioned relay, which can effectively isolate its noise.

[0030] In one embodiment, the noise reduction device includes a cover 2 and a shell 3. The cover 2 is connected to the shell 3 and together wraps the electrical component 1. Specifically, the shell 3 is used to accommodate the component body 11, and the cover 2 is used to wrap the connector 12 and cover the component body 11. The cover 2 includes an inner side surface 21 and a receiving cavity 22, and the receiving cavity 22 is recessed from the inner side surface 21 along the height direction of the noise reduction device. When the cover 2 is arranged on the shell 3, at least part of the connector 12 is arranged in the receiving cavity 22. Furthermore, in the height direction of the noise reduction device, at least half of the height of the connector 12 is arranged in the receiving cavity 22. In order to improve the noise reduction effect of the noise reduction device, the connector 12 is preferably completely arranged in the receiving cavity 22.

[0031] With such a configuration, after the cover 2 is connected to the shell 3, it can effectively prevent the transmission of noise in the component body 11, and at the same time, by wrapping the connector 12 through the accommodating cavity 22, it can also effectively prevent the noise from propagating from the connector 12, thereby greatly eliminating the overall noise of the electrical component, improving the silencing effect of the noise reduction device on the electrical component 1, and improving the noise reduction effect of the noise reduction device.

[0032] In order to improve the noise isolation effect of the noise reduction device on the connector 12 , the number of the accommodating cavities 22 corresponds to the number of the connectors 12 , and each accommodating cavity 22 accommodates a connector 12 .

[0033] The cover 2 and the housing 3 are preferably detachably connected, thereby improving the convenience of disassembly and assembly of the cover 2 and the housing 3, and also facilitating subsequent replacement and maintenance. In another embodiment, the noise reduction device includes a hinge member (not shown), one end of the hinge member is connected to the cover 2, and the other end is connected to the housing 3, and the cover 2 is rotatably arranged relative to the housing 3. Such an arrangement allows the cover 2 to be always connected to the housing 3, preventing the cover 2 and the housing 3 from being lost when the noise reduction device is installed, and allows the cover 2 to be quickly covered on the housing 3, thereby improving work efficiency.

[0034] In one embodiment, in order to improve the stability of the cover 2 and the housing 3 after installation, at least part of the cover 2 is embedded in the housing 3. Specifically, the cover 2 includes a cover plate 23 and an embedding block 24. The embedding block 24 is protruded from the cover plate 23, and in the height direction of the noise reduction device, the projection of the cover plate 23 covers the projection of the embedding block 24. The inner side surface 21 is provided on the embedding block 24, and the inner side surface 21 and the cover plate 23 are arranged back to back.

[0035] The accommodating cavity 22 is at least provided in the fitting block 24. Specifically, the accommodating cavity 22 is recessed from the fitting block 24 toward the cover plate 23. And according to the height of the connector 12, the accommodating cavity 22 may also be recessed from the fitting block 24 into the cover plate 23, that is, the accommodating cavity 22 may penetrate the fitting block 24 and part of the cover plate 23.

[0036] The cover 2 is provided with a wire groove 25. The wire groove 25 extends from the side of the cover plate 23 to the inside of the fitting block 24. Specifically, the wire groove 25 can extend from the long side 231 of the cover plate 23 to the inside of the fitting block 24 along the width direction of the noise reduction device. Alternatively, the wire groove 25 can extend from the short side 232 of the cover plate 23 to the inside of the fitting block 24 along the length direction of the noise reduction device. In the height direction of the noise reduction device, the wire groove 25 passes through the cover plate 23 and the fitting block 24, and is connected to the accommodating cavity 22. The wiring harness of the connector 12 can extend to the outside of the noise reduction device through the wire groove 25.

[0037] like Figures 5 and 6 As shown, in another embodiment, the cover 2 is a single-layer plate structure. In the height direction of the noise reduction device, the accommodating cavity 22 is recessed and does not penetrate the cover 2, and the projection area of ​​the cover 2 is not greater than the cross-sectional area of ​​the inner cavity of the shell 3, and at least part of the cover 2 is arranged in the shell 3. Indeed, in the height direction of the noise reduction device, the projection area of ​​the cover 2 is not less than the projection area of ​​the shell 3, the inner side surface 21 of the cover 2 is in contact with the end surface of the opening of the shell 3, and the cover 2 and the shell 3 can be fixed by bonding.

[0038] like Figures 7 and 8 As shown, in another embodiment, in the height direction of the noise reduction device, the projection of the cover 2 covers the projection of the shell 3, and at least part of the shell 3 is embedded in the cover 2. Specifically, the cover 2 includes a cover body 26 and a surrounding edge 27. The inner side 21 is provided on the cover body 26, and the accommodating cavity 22 is recessed into the cover body 26. The surrounding edge 27 is extended from the inner side 21, and the extending direction of the surrounding edge 27 is opposite to the recessed direction of the accommodating cavity 22. The accommodating cavity 22 is connected to the cavity formed by the surrounding edge 27. When the cover 2 is provided on the shell 3, the end face at the opening of the shell 3 contacts the inner side 21, and the surrounding edge 27 wraps the shell 3 and can be attached to the outer wall of the shell 3.

[0039] Further integration Figure 2 , Figure 3 and Fig. 9 As shown, in one embodiment, the housing 3 includes a limiting end face 31, a limiting cavity 32, and a component cavity 33. The limiting cavity 32 is recessed from the limiting end face 31, and the component cavity 33 is recessed from the bottom wall 321 of the limiting cavity 32. In the height direction of the noise reduction device, the component cavity 33 is located below the limiting cavity 32 and is connected to the limiting cavity 32. The cross section of the component cavity 33 is smaller than the cross section area of ​​the limiting cavity 32. The component body 11 is located in the component cavity 33, and the connector 12 can be located in the limiting cavity 32.

[0040] When the cover 2 is a double-layer plate structure composed of the cover plate 23 and the engaging block 24, the engaging block 24 is arranged in the housing 3, that is, the engaging block 24 is located in the limiting cavity 32, the inner side surface 21 of the engaging block 24 contacts the bottom wall 321 of the limiting cavity 32, and the limiting end surface 31 contacts the cover plate 23. In this way, the cover 2 can be installed to the housing 3 more quickly through the double limiting structure of the inner side surface 21 contacting the bottom wall 321 and the limiting end surface 31 contacting the cover plate 23.

[0041] When the cover 2 is in a single-layer plate structure, at least a portion of the cover 2 is located in the limiting cavity 32 , and the inner side surface 21 of the cover 2 contacts the bottom wall 321 of the limiting cavity 32 .

[0042] In another embodiment, the cover 2 is slidably connected to the housing 3. Specifically, a slide rail (not shown) is provided at the bottom of the cover 2, a slide groove (not shown) is provided at the top of the housing 3, and the slide rail cooperates with the slide groove so that the cover 2 can slide relative to the housing 3. Alternatively, a slide groove is provided at the bottom of the cover 2, and a slide rail is provided at the top of the housing 3.

[0043] In one embodiment, the housing 3 is provided with a lower through hole 34 and an avoidance hole 35. The lower through hole 34 is provided on the bottom plate of the housing 3 and communicates with the inner cavity of the housing 3, that is, the lower through hole 34 communicates with the element chamber 33. Part of the fixed end of the element body 11 passes through the lower through hole 34 and is located outside the noise reduction device. The avoidance hole 35 is provided on the side plate of the housing 3 and communicates with the inner cavity of the housing 3, that is, the avoidance hole 35 communicates with the element chamber 33. Part of the fixed end of the element body 11 passes through the avoidance hole 35 and is located outside the noise reduction device.

[0044] The noise reduction device of the present application is preferably made of, but not limited to, foam material. In the present application, the height direction of the noise reduction device is the Z-axis direction, the length direction of the noise reduction device is the X-axis direction, and the width direction of the noise reduction device is the Y-axis direction. For details, please refer to Figures 1 to 3 .

[0045] The present application also provides a vehicle, comprising an electrical component 1, a vehicle body (not shown) and the noise reduction device as described above, wherein the electrical component 1 is arranged in the vehicle body, and the noise reduction device wraps the electrical component 1. Such an arrangement can effectively isolate the propagation of noise of the electrical component 1 in the vehicle body, prevent noise from entering the vehicle cabin, improve the quiet effect inside the vehicle cabin, enhance people's use experience, and thus improve market competitiveness.

Claims

1. A noise reduction device for wrapping an electrical component to reduce the noise generated by the electrical component, characterized in that: The electrical component includes a component body and a connector arranged on the component body; the noise reduction device includes a cover and a shell for accommodating the component body; the cover includes an inner side surface and a accommodating cavity recessed from the inner side surface; the cover is arranged on the shell; at least part of the connector is arranged in the accommodating cavity.

2. The noise reduction device according to claim 1, characterized in that: The cover is detachably connected to the shell, and at least a portion of the cover is embedded in the shell.

3. The noise reduction device according to claim 2, characterized in that: The cover comprises a cover plate and an embedding block protruding from the cover plate; the inner side surface is located at the embedding block, and the accommodating cavity is at least arranged in the embedding block; the embedding block is arranged in the shell.

4. The noise reduction device according to claim 3, characterized in that: The shell comprises a limiting end surface and a limiting cavity recessed from the limiting end surface; the engaging block is arranged in the limiting cavity; the limiting end surface contacts the cover plate, and the inner side surface contacts the bottom wall of the limiting cavity.

5. The noise reduction device according to claim 3, characterized in that: The cover is provided with a wire-passing groove; the wire-passing groove extends from the side of the cover plate into the embedded block; and the wire-passing groove is communicated with the accommodating cavity.

6. The noise reduction device according to claim 2, characterized in that: The shell is provided with a communicating limiting cavity and a component cavity; the component body is located in the component cavity; at least a part of the cover is located in the limiting cavity, and the inner side surface contacts the bottom wall of the limiting cavity.

7. The noise reduction device according to claim 1, characterized in that: The shell is provided with a lower through hole and an avoidance hole which are communicated with the inner cavity of the shell. The lower through hole is provided on the bottom plate of the shell, and the avoidance hole is provided on the side plate of the shell.

8. The noise reduction device according to claim 1, characterized in that: In the height direction of the noise reduction device, the projection of the cover covers the projection of the shell; at least a portion of the shell is embedded in the cover.

9. The noise reduction device according to claim 1, characterized in that: The electrical component comprises a hinge; one end of the hinge is connected to the cover, and the other end is connected to the shell; the cover is rotatably arranged relative to the shell.

10. A vehicle, characterized in that: The invention comprises an electrical component, a vehicle body and a noise reduction device according to any one of claims 1 to 9, wherein the electrical component is arranged on the vehicle body, and the noise reduction device wraps the electrical component.

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