CN220483177U - Automobile sounder mounting structure and new energy automobile - Google Patents

Abstract

The utility model relates to a car sound generator mounting structure and new energy automobile, car sound generator mounting structure includes installing support and first elasticity damping layer, and the sound generator passes through the installing support to be connected in the installation crossbeam, and first elasticity damping layer presss from both sides and locates between installing support and the installation crossbeam, and first elasticity damping layer includes the multilayer damping pad, along the direction from installing support to the installation crossbeam, the thickness of every layer damping pad increases gradually; alternatively, the stiffness of each layer of the vibration dampening mat increases gradually in the direction from the mounting bracket to the mounting beam. The utility model provides an automobile sounder mounting structure and new energy automobile has solved when the suggestion sound of sounder broadcast different co-frequency channel, and the rubber pad is relatively poor to the absorbing effect of the acoustic vibration of different frequency channels.

Description

Automobile sounder mounting structure and new energy automobile

Technical Field

The application relates to the technical field of mounting brackets, in particular to an automobile sounder mounting structure and a new energy automobile.

Background

The 12.13.2 requirements of the safety of motor vehicles specify that when the pure electric vehicle and the plug-in hybrid electric vehicle start and the vehicle speed is lower than 20km/h, the plug-in hybrid electric vehicle can give out proper prompting sound to the personnel outside the vehicle. At present, an electric vehicle uses an independent sounder and a low-speed driving prompt tone device, and the sounder is installed on an installation beam through a bracket. When a low-speed warning sound system of a vehicle starts to work, namely, when a sound generator starts to sound, acoustic energy and acoustic vibration caused by the low-speed warning sound system are transmitted to the mounting cross beam, so that the mounting cross beam and the sound generator are easy to resonate, and abnormal sound and vibration occur;

normally, the mode of adding the rubber pad between the sounder and the mounting cross beam is adopted to absorb the acoustic vibration generated by the sounder, but when the sounder plays the prompt tones of different frequency bands, the absorption effect of the rubber pad on the acoustic vibration of different frequency bands is poor.

Disclosure of Invention

Based on this, it is necessary to provide an automobile sounder installation structure to solve the problem that the rubber pad is relatively poor to the absorption effect of the acoustic vibration of different high frequency ranges when the sounder plays the suggestion sound of different frequency ranges.

The application provides an automobile sound generator mounting structure, the automobile sound generator mounting structure includes installing support and first elasticity damping layer, and the sound generator passes through installing support and connects in the installation crossbeam, and first elasticity damping layer presss from both sides and locates between installing support and the installation crossbeam, and first elasticity damping layer includes the multilayer damping pad, along the direction from installing support to the installation crossbeam, the thickness of every layer damping pad increases gradually; alternatively, the stiffness of each layer of the vibration dampening mat increases gradually in the direction from the mounting bracket to the mounting beam.

In one embodiment, the automotive sounder mounting structure further comprises a second elastic vibration damping layer sandwiched between the sounder and the mounting bracket. It will be appreciated that so arranged, the second resilient vibration reduction layer absorbs acoustic vibrations emitted by the sounder once, thereby reducing the acoustic vibrations transmitted to the mounting bracket.

In one embodiment, the thickness of the second elastic vibration reduction layer is less than the thickness of the first elastic vibration reduction layer. It can be understood that, so set up, can avoid the second elasticity damping layer to exert an influence to the tone quality of sound generator to, be favorable to promoting the absorption effect of first elasticity damping layer to acoustic vibration.

In one embodiment, two opposite side surfaces of the mounting bracket along the thickness direction of the mounting bracket are defined as a first surface and a second surface respectively, the mounting cross beam is connected to the first surface, the sounder is connected to the second surface, and the first elastic vibration reduction layer completely covers the first surface; the second elastic vibration damping layer completely covers the second face. It will be appreciated that so configured, the first and second resilient vibration reduction layers are capable of cooperatively reducing vibration at various locations of the mounting bracket.

In one embodiment, the first elastomeric vibration reduction layer is bonded to the first face and the second elastomeric vibration reduction layer is bonded to the second face. It will be appreciated that such an arrangement is advantageous for improving the degree of securement of the first and second elastomeric vibration damping layers, respectively, to the mounting bracket.

In one embodiment, the number of the vibration reduction pads is two, and the two vibration reduction pads are a first vibration reduction pad and a second vibration reduction pad respectively, wherein the first vibration reduction pad is arranged close to the mounting bracket, the Shore hardness of the first vibration reduction pad is M, the range of M is satisfied, and M is more than or equal to 18HA and less than or equal to 37HA; the Shore hardness of the second vibration reduction pad is N, and the range of N is satisfied, and N is more than or equal to 43HA and less than or equal to 62HA. It can be appreciated that the arrangement is such that the hardness of the first damping pad and the hardness of the second damping pad can be matched with the cue tone frequency of the sounder, thereby being capable of effectively absorbing vibrations of each frequency band of the sounder.

In one embodiment, the thickness of the second elastic vibration damping layer is the same as the thickness of the first vibration damping pad, and the shore hardness of the second elastic vibration damping layer is the same as the shore hardness of the second vibration damping pad. It will be appreciated that the second resilient vibration damping layer is arranged to absorb vibrations in the same manner as the second vibration damping pad and is larger than the first vibration damping pad located on the inner side.

In one embodiment, the mounting bracket is plate-shaped, and the sounder and the mounting cross beam are positioned at two ends of the mounting bracket along the length direction of the mounting bracket. It will be appreciated that such an arrangement is advantageous in reducing the vibrations transmitted to the mounting beam.

In one embodiment, the mounting bracket comprises a first section, a second section and an intermediate connecting section, wherein the first section and the second section are arranged in parallel, the intermediate connecting section is connected with the first section and the second section, and the intermediate connecting section is arranged at an included angle with the first section. The sounder is connected to the first section and the mounting cross beam is connected to the second section. It will be appreciated that the arrangement is such that the mounting bracket is more compact in structure, thereby facilitating a reduction in the space occupied by the mounting bracket.

The application also provides a new energy automobile, this new energy automobile include sound generator, installation crossbeam and above arbitrary embodiment car sound generator mounting structure, sound generator passes through car sound generator mounting structure and connects in the installation crossbeam.

Compared with the prior art, the automobile sounder mounting structure and the new energy automobile that this application provided because the sounder passes through the installing support to, first elasticity damping layer presss from both sides and locates between installing support and the installing beam, consequently, when the sounder begins the sound production vibration, can first elasticity damping layer take place elastic deformation, thereby makes first elasticity damping layer can absorb a part of kinetic energy, weakens the vibration that the sounder transmitted.

Further, since the first elastic vibration damping layer includes a plurality of layers of vibration damping pads, and the thickness of each layer of vibration damping pad gradually increases in the direction from the mounting bracket to the mounting cross member. Therefore, when the sounder plays a low frequency alert tone, i.e., the resulting vibration frequency is low, only the relatively thin vibration dampening pad adjacent the mounting bracket is deformed to dampen the vibration of the mounting bracket. When the sounder plays the medium-high frequency prompt tone, the vibration frequency transmitted to the mounting bracket is relatively high, so that the relatively thin vibration damping pad close to the mounting bracket and the relatively thick vibration damping pad close to the mounting cross beam are deformed to resist high-frequency vibration.

Alternatively, the stiffness of each layer of the vibration dampening mat increases gradually in the direction from the mounting bracket to the mounting beam. Therefore, when the sounder plays a low frequency alert tone, i.e., the resulting vibration frequency is low, only the relatively soft vibration dampening pad adjacent the mounting bracket deforms to dampen the vibration of the mounting bracket. When the sounder plays the medium-high frequency prompt tone, the vibration frequency transmitted to the mounting bracket is relatively large, so that the relatively soft vibration damping pad close to the mounting bracket and the relatively hard vibration damping pad close to the mounting cross beam are deformed to resist high-frequency vibration.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic illustration of an assembly of a mounting bracket and a sound generator according to an embodiment of the present disclosure;

FIG. 2 is a second schematic diagram illustrating the assembly of a mounting bracket and a sound generator according to an embodiment of the present disclosure;

fig. 3 is a cross-sectional view of a mounting bracket of another embodiment provided herein.

Reference numerals: 10. a sound generator; 20. a mounting bracket; 21. a first face; 22. a second face; 23. a first section; 24. a second section; 25. an intermediate connection section; 40. a first elastic vibration damping layer; 41. a vibration damping pad; 42. a first vibration damping pad; 43. a second vibration damping pad; 50. a second elastic vibration damping layer.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used in the description of the present application for purposes of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first feature with the second feature, or an indirect contact of the first feature with the second feature via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and/or" as used in the specification of this application includes any and all combinations of one or more of the associated listed items.

The 12.13.2 requirements of the safety of motor vehicles specify that when the pure electric vehicle and the plug-in hybrid electric vehicle start and the vehicle speed is lower than 20km/h, the plug-in hybrid electric vehicle can give out proper prompting sound to the personnel outside the vehicle. At present, an electric vehicle uses an independent sounder and a low-speed driving prompt tone device, and the sounder is installed on an installation beam through a bracket. When a low-speed warning sound system of a vehicle starts to work, namely, when the sounder starts to sound, acoustic energy and acoustic vibration caused by the low-speed warning sound system can be transmitted to the mounting cross beam, the mounting cross beam and the sounder are easy to resonate, so that abnormal sound and vibration of a new energy automobile occur, normally, the mode of adding a rubber pad between the sounder bracket and the mounting cross beam is adopted to absorb the acoustic vibration generated when the sounder sounds, but when the sounder plays warning sounds in different frequency bands, the rubber pad has poorer absorption effect on the acoustic vibration in different frequency bands.

Referring to fig. 1-2, the problem that the rubber pad has poor effect of absorbing acoustic vibrations of different high frequency bands when the sounder plays the cue sounds of different high frequency bands is solved. The application provides an automobile sounder mounting structure. The automobile sound generator mounting structure comprises a mounting bracket 20 and a first elastic vibration reduction layer 40, wherein the sound generator 10 is connected to a mounting cross beam through the mounting bracket 20, the first elastic vibration reduction layer 40 is clamped between the mounting bracket 20 and the mounting cross beam, the first elastic vibration reduction layer 40 comprises a plurality of layers of vibration reduction pads 41, and the thickness of each layer of vibration reduction pad 41 gradually increases along the direction from the mounting bracket 20 to the mounting cross beam; alternatively, the stiffness of each layer of vibration damping pad 41 increases gradually in the direction from the mounting bracket 20 to the mounting cross member.

Because the sounder 10 is connected to the mounting cross beam through the mounting bracket 20, and the first elastic damping layer 40 is sandwiched between the mounting bracket 20 and the mounting cross beam, when the sounder 10 starts to vibrate, the vibration causes the first elastic damping layer 40 to deform elastically, so that the first elastic damping layer 40 can absorb a part of kinetic energy to weaken the vibration transmitted by the sounder 10.

Further, since the first elastic vibration damping layer 40 includes a plurality of layers of vibration damping pads 41, and the thickness of each layer of vibration damping pad 41 gradually increases in the direction from the mounting bracket 20 to the mounting cross member. Accordingly, when the sound generator 10 emits a low frequency alert sound, i.e., the resulting vibration frequency is low, only the relatively thin vibration dampening pad 41 adjacent the mounting bracket 20 is deformed to dampen the vibration of the mounting bracket 20. When the sounder 10 plays the medium-high frequency alert sound, the relatively thin vibration damping pad 41 near the mounting bracket 20 and the thicker vibration damping pad 41 near the mounting cross beam are deformed to resist the high frequency vibrations due to the relatively large frequency of the vibrations transmitted to the weak mounting bracket 20.

Alternatively, the stiffness of each layer of vibration damping pad 41 increases gradually in the direction from the mounting bracket 20 to the mounting cross member. Accordingly, when the sound generator 10 plays a low frequency alert sound, i.e., the resulting vibration frequency is low, only the relatively soft vibration dampening shoe 41 adjacent the mounting bracket 20 deforms to dampen the vibration of the mounting bracket 20. When the sounder 10 plays the medium-high frequency alert sound, the relatively soft vibration damping pad 41 near the mounting bracket 20 and the harder vibration damping pad 41 near the mounting cross beam are deformed to resist the high frequency vibrations due to the relatively high frequency of the vibrations transmitted to the mounting bracket 20.

In summary, according to the mounting structure of the sounder provided by the present application, the vibration-damping pad 41 with different hardness or different thickness is arranged in multiple layers, so that the first elastic vibration-damping layer 40 can effectively attenuate the acoustic vibration of the low frequency band transmitted by the sounder 10.

The vibration damping pad 41 may be a rubber pad or a silica gel pad that is easily elastically deformed by sound.

In one embodiment, as shown in fig. 1-3, the automotive sound generator mounting structure further includes a second elastic vibration damping layer 50, the second elastic vibration damping layer 50 being sandwiched between the sound generator 10 and the mounting bracket 20.

By adding the second elastic vibration reduction layer 50 between the sound generator 10 and the mounting bracket 20, the second elastic vibration reduction layer 50 first absorbs the acoustic vibration emitted from the sound generator 10 once, thereby reducing the acoustic vibration transmitted to the mounting bracket 20.

The second elastic damping layer 50 may be a single-layer rubber pad or a silicone pad, or may be a multi-layer rubber pad or a silicone pad.

Further, in an embodiment, the thickness of the second elastic damping layer 50 is less than the thickness of the first elastic damping layer 40.

Because the second elastic vibration reduction layer 50 is sandwiched between the sounder 10 and the mounting bracket 20, the relatively thin second elastic vibration reduction layer 50 can avoid the second elastic vibration reduction layer 50 from affecting the sound production of the sounder, and the relatively thick first elastic vibration reduction layer 40 is beneficial to improving the absorption effect of the first elastic vibration reduction layer 40 on vibration.

In one embodiment, as shown in fig. 1-2, two opposite sides of the mounting bracket 20 along the thickness direction thereof are defined as a first surface 21 and a second surface 22, the mounting beam is connected to the first surface 21, the sounder 10 is connected to the second surface 22, and the first elastic vibration reduction layer 40 completely covers the first surface 21. The second elastomeric vibration damping layer 50 completely covers the second face 22.

In this way, the first elastic vibration reduction layer 40 and the second elastic vibration reduction layer 50 can be matched to reduce vibration of each part of the mounting bracket 20, so that resonance between the mounting bracket 20 and the mounting cross beam is effectively avoided.

Further, in one embodiment, the first elastic vibration reduction layer 40 is bonded to the first face 21 and the second elastic vibration reduction layer 50 is bonded to the second face 22.

In this way, the firmness of the connection of the first elastic damping layer 40 and the second elastic damping layer 50 with the mounting bracket 20, respectively, is advantageously improved.

In one embodiment, as shown in fig. 1, the number of the vibration-damping pads 41 is two, and the two vibration-damping pads 41 are a first vibration-damping pad 42 and a second vibration-damping pad 43 respectively, wherein the first vibration-damping pad 42 is arranged close to the mounting bracket 20, the shore hardness of the first vibration-damping pad 42 is M, and the range of M is satisfied, and 18HA is less than or equal to M and less than or equal to 37HA; the Shore hardness of the second vibration damping pad 43 is N, and the range of N is satisfied, and N is not less than 43HA and not more than 62HA.

In general, the frequency of the alert sound of the sound generator 10 is 400-1200Hz, and it is understood that the smaller the shore hardness of the first vibration damping pad 42 and the second vibration damping pad 43 is, the more easily the vibration damping pad 41 is deformed, thereby being beneficial to absorbing low frequency vibrations; the greater the shore hardness of the first and second vibration-damping pads 42, 43, the less likely the vibration-damping pad 41 will deform, thereby facilitating the absorption of low frequency vibrations. Therefore, by setting 18HA M37 HA and 43HA N62 HA, the hardness of the first vibration damping pad 42 and the hardness of the second vibration damping pad 43 can be matched with the prompt tone frequency of the sounder, so that the vibration of each frequency band of the sounder can be effectively absorbed. For example, M may be 18HA, 19HA, 20HA, 22HA, 25HA, 25.5HA, 28HA, 30HA, 35HA, 36HA, 37HA, etc. The value of N may be 43HA, 44HA, 45HA, 50HA, 51HA, 53HA, 55.5HA, 57HA, 60HA, 61HA, 62HA, etc. Of course, the specific selection may be according to the actual situation, and this is not listed here.

Providing the first and second vibration damping pads 42 and 43 makes the structure of the first elastic vibration damping layer 40 simple.

Further, in an embodiment, the thickness of the second elastic damping layer 50 is the same as the thickness of the first damping pad 42, and the shore hardness of the second elastic damping layer 50 is the same as the shore hardness of the second damping pad 43.

In this way, the second elastic vibration damping layer 50 has the same effect of absorbing vibration as the second vibration damping pad 43, and is larger than the first vibration damping pad 42 located on the inner side.

In one embodiment, as shown in fig. 1, the mounting bracket 20 has a plate shape, and the sound generator 10 and the mounting cross member are located at opposite ends of the mounting bracket 20 along the length direction of the mounting bracket 20.

Since the sound generator 10 and the mounting cross member are located at opposite ends of the mounting bracket 20 along the length direction of the mounting bracket 20, a portion of the vibration caused by the sound generator 10 is attenuated during the transmission along the length direction of the mounting bracket 20, thereby facilitating the reduction of the vibration transmitted to the mounting cross member.

Specifically, in one embodiment, as shown in fig. 3, the mounting bracket 20 includes a first section 23, a second section 24, and an intermediate connection section 25, where the first section 23 and the second section 24 are disposed in parallel, the intermediate connection section 25 connects the first section 23 and the second section 24, and the intermediate connection section 25 is disposed at an angle with the first section 23, the sounder 10 is connected to the first section 23, and the mounting beam is connected to the second section 24.

Compared with the mounting bracket 20 made into a flat plate shape extending straight, the first section 23 and the second section 24 are arranged in parallel, the middle connecting section 25 is connected with the first section 23 and the second section 24, and the middle connecting section 25 and the first section 23 are arranged at an included angle, so that the mounting bracket 20 is more compact in structure, and the occupied space of the mounting bracket 20 is reduced. For example, the mounting bracket 20 may be formed into a zigzag shape or approximately a zigzag shape by connecting the first section 23, the second section 24 and the third section, and of course, the specific shape of the mounting bracket 20 may be set according to actual mounting requirements, for example, as shown in fig. 1 and 2, the mounting bracket 20 may be in an overall L shape.

Wherein the sounder 10 is threadably connected to the first section 23 and the mounting beam is threadably connected to the second section 24.

The application also provides a new energy automobile, this new energy automobile includes sound generator 10, installation crossbeam and above arbitrary embodiment car sound generator mounting structure, and sound generator 10 passes through car sound generator mounting structure and connects in the installation crossbeam.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (10)

1. A mounting structure of an automobile sound generator is characterized in that the mounting structure of the automobile sound generator comprises a mounting bracket (20) and a first elastic vibration reduction layer (40), the sound generator (10) is connected with a mounting cross beam through the mounting bracket (20),

the first elastic vibration reduction layer (40) is clamped between the mounting bracket (20) and the mounting cross beam, the first elastic vibration reduction layer (40) comprises a plurality of layers of vibration reduction pads (41), and the thickness of each layer of vibration reduction pad (41) is gradually increased along the direction from the mounting bracket (20) to the mounting cross beam; alternatively, the stiffness of each layer of the vibration damping pad (41) is gradually increased along the direction from the mounting bracket (20) to the mounting cross beam.

2. The automobile sound generator mounting structure of claim 1, further comprising a second elastic vibration damping layer (50), the second elastic vibration damping layer (50) being sandwiched between the sound generator (10) and the mounting bracket (20).

3. The automotive sounder mounting structure according to claim 2, characterized in that the thickness of the second elastic vibration damping layer (50) is smaller than the thickness of the first elastic vibration damping layer (40).

4. The mounting structure of an automobile sound generator according to claim 3, wherein two opposite sides of the mounting bracket (20) in the thickness direction thereof are defined as a first face (21) and a second face (22), respectively, a mounting cross member is connected to the first face (21), the sound generator (10) is connected to the second face (22),

-said first elastic damping layer (40) completely covers said first face (21);

the second elastic damping layer (50) completely covers the second face (22).

5. The automotive sounder mounting structure according to claim 4, wherein the first elastic vibration damping layer (40) is bonded to the first face (21), and the second elastic vibration damping layer (50) is bonded to the second face (22).

6. The mounting structure of an automotive sound generator according to claim 3, wherein the number of the vibration damping pads (41) is two, and the two vibration damping pads (41) are a first vibration damping pad (42) and a second vibration damping pad (43), respectively, wherein the first vibration damping pad (42) is disposed close to the mounting bracket (20),

the Shore hardness of the first vibration reduction pad (42) is M, the range of M is satisfied, and M is more than or equal to 18HA and less than or equal to 37HA;

the Shore hardness of the second vibration reduction pad (43) is N, the range of N is satisfied, and N is not less than 43HA and not more than 62HA.

7. The automobile sound generator mounting structure of claim 6, wherein the thickness of the second elastic vibration damping layer (50) is the same as the thickness of the first vibration damping pad (42), and the shore hardness of the second elastic vibration damping layer (50) is the same as the shore hardness of the second vibration damping pad (43).

8. A mounting structure of an automotive sound generator according to claim 3, characterized in that the mounting bracket (20) is plate-shaped, and the sound generator (10) and the mounting cross member are located at opposite ends of the mounting bracket (20) along the longitudinal direction of the mounting bracket (20).

9. The mounting structure of an automotive sound generator according to claim 1, characterized in that the mounting bracket (20) comprises a first section (23), a second section (24) and an intermediate connecting section (25), the first section (23) and the second section (24) are arranged in parallel, the intermediate connecting section (25) connects the first section (23) and the second section (24), and the intermediate connecting section (25) is arranged at an angle to the first section (23),

the sounder (10) is connected to the first section (23) and the mounting cross member is connected to the second section (24).

10. A new energy automobile, characterized by comprising a sound generator (10), a mounting cross beam and an automobile sound generator mounting structure according to any one of claims 1-9, wherein the sound generator (10) is connected to the mounting cross beam through the automobile sound generator mounting structure.