Anti-vibration and soundproof device, bracket with Anti-vibration and soundproof function, and fixing structure of electric auxiliary machine for vehicle

Abstract

To provide an anti-vibration and soundproof device, a bracket with anti-vibration and soundproof function and a fixing structure of an electric auxiliary machine for a vehicle, which solve either the problem of generation of noise from a soundproof cover or the problem of a large number of components.SOLUTION: An anti-vibration and soundproof device 10a attached to an electric auxiliary machine 20 for a vehicle includes: a bracket body 30 attached to the electric auxiliary machine 20 for the vehicle; an anti-vibration device 40 attached to the bracket body 30 and elastically coupling the bracket body 30 and a body B of a vehicle; and a soundproof cover 50 attached to the bracket body 30, the anti-vibration device 40 or the electric auxiliary machine 20 for the vehicle, and covering the electric auxiliary machine 20 for the vehicle in a non-contact state.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a vibration and noise isolation device, a bracket with a vibration and noise isolation function, and a fixing structure for an electric auxiliary machine for a vehicle.

Background Art

[0002] Recently, due to the spread of electric vehicles (EVs), the quietness inside the vehicle has improved. Therefore, the noise and vibration generated when the electric auxiliary machine for a vehicle mounted on the vehicle operates have become a problem.

[0003] When the electric auxiliary machine for a vehicle operates, operating noise may be generated from the electric auxiliary machine for a vehicle. When this operating noise enters the vehicle interior, it can be noise for the passengers. Further, when the electric auxiliary machine for a vehicle operates, the electric auxiliary machine for a vehicle may vibrate. When this vibration is transmitted to the bracket that connects the electric auxiliary machine for a vehicle and the vehicle body, and further transmitted to the vehicle body, the electric auxiliary machine for a vehicle, the bracket, and the vehicle body vibrate, and as a result, noise may be generated from the electric auxiliary machine for a vehicle, the bracket, and the vehicle body.

[0004] In Patent Document 1, in order to reduce the noise and vibration generated during the operation of the electric auxiliary machine for a vehicle, a technique is described in which the outer peripheral surface of the electric auxiliary machine for a vehicle is covered with a sound insulation cover, and a vibration isolation material is interposed between the bracket for attaching the electric auxiliary machine for a vehicle to the vehicle body and the vehicle body.

[0005] In the technique according to Patent Document 1, the electric auxiliary machine for a vehicle is fixed to the vehicle body by a support bracket. The vibration isolation material is interposed between the support bracket and the vehicle body. The sound insulation cover has a first cover portion and a second cover portion. The first cover portion is disposed between the support bracket and the vehicle body. The second cover portion covers the outer peripheral surface of the electric auxiliary machine for a vehicle on the side opposite to the vehicle body with respect to the support bracket. The entire electric auxiliary machine for a vehicle is covered by the first cover portion and the second cover portion.

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Unexamined Patent Application Publication No. 2022-147641 [Summary of the Invention] [Problems to be Solved by the Invention]

[0007] However, in the above technology, the inner peripheral surface of the soundproof cover is in contact with the outer peripheral surface of the vehicle electric auxiliary machine. Therefore, when the vehicle electric auxiliary machine operates, the vibration generated by the vehicle electric auxiliary machine is transmitted to the soundproof cover, and the soundproof cover may vibrate. When the soundproof cover vibrates, there is a problem that sound is generated from the soundproof cover itself.

[0008] Also, in the above technology, the members used to attach the vehicle electric auxiliary machine to the vehicle body are the support bracket, the vibration isolator, and the soundproof cover. Therefore, there is a problem that the number of parts is large.

[0009] The present invention has been made in view of such a background, and aims to provide a vibration isolation and soundproofing device, a bracket with a vibration isolation and soundproofing function, and a fixing structure for a vehicle electric auxiliary machine that solve any of the above problems. [Means for Solving the Problems]

[0010] One aspect of the present invention is a vibration isolation and soundproofing device attached to a vehicle electric auxiliary machine, comprising a bracket body attached to the vehicle electric auxiliary machine, a vibration isolation device attached to the bracket body and elastically connecting the bracket body and the vehicle body, and a soundproof cover attached to the bracket body, the vibration isolation device, or the vehicle electric auxiliary machine and covering the vehicle electric auxiliary machine in a non-contact state.

[0011] Another aspect of the present invention is It is in the fixing structure of an electric auxiliary machine for a vehicle using the above anti-vibration and sound insulation device.

[0012] Still another aspect of the present invention is a bracket with anti-vibration and sound insulation functions attached to an electric auxiliary machine for a vehicle, comprising a bracket body having a first main surface to which the electric auxiliary machine for the vehicle is attached, a sound insulation cover attached to the bracket body and covering at least a part of the electric auxiliary machine for the vehicle on the first main surface side of the bracket body, and an anti-vibration device attached to the bracket body and elastically connecting the bracket body and the vehicle body. The bracket has anti-vibration and sound insulation functions.

Advantages of the Invention

[0013] According to one aspect and another aspect of the present invention, vibrations generated when the electric auxiliary machine for the vehicle operates are transmitted from the electric auxiliary machine for the vehicle to the bracket body and then attenuated by the anti-vibration device attached to the bracket body. Thereby, transmission of vibrations generated in the electric auxiliary machine for the vehicle to the vehicle body is suppressed. Also, the sound generated when the electric auxiliary machine for the vehicle operates is absorbed by the sound insulation cover covering the electric auxiliary machine for the vehicle. Furthermore, since the sound insulation cover and the electric auxiliary machine for the vehicle are in a non-contact state, transmission of vibrations from the electric auxiliary machine for the vehicle to the sound insulation cover is suppressed. Thereby, generation of sound from the sound insulation cover due to vibrations transmitted from the electric auxiliary machine for the vehicle is suppressed.

[0014] According to still another aspect of the present invention, since the bracket body, the anti-vibration device, and the sound insulation cover can be handled as one part, the number of parts can be reduced compared to the case where the bracket body part, the anti-vibration device, and the sound insulation cover are handled as separate parts.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Mode for Carrying Out the Invention

[0016] (Embodiment 1) 1. Schematic configuration of the vibration and noise isolation device 10a As shown in Fig. 1, the vibration and noise isolation device 10a (an example of a bracket with vibration and noise isolation functions) according to this embodiment is attached to the vehicle electric auxiliary machine 20, and suppresses the transmission of vibrations generated by the vehicle electric auxiliary machine 20 to the vehicle body B (not shown) of the vehicle, and suppresses the transmission of noise generated by the vehicle electric auxiliary machine 20 to the outside. The vibration and noise isolation device 10a according to this embodiment can be applied to any vehicle electric auxiliary machine 20 such as a motor, a compressor, etc. In this embodiment, a compressor will be taken as an example to explain the vehicle electric auxiliary machine 20. In the following description, the direction indicated by the arrow X will be regarded as the front, the direction indicated by the arrow Y will be regarded as the left, and the direction indicated by the arrow Z will be regarded as the upward for explanation. Also, in the following explanation, for a plurality of identical members, only some members may be labeled with reference numerals, and the reference numerals of other members may be omitted.

[0017] 2. Vehicle electric auxiliary machine 20 As shown in Fig. 1, the vehicle electric auxiliary machine 20 includes a main body portion 21 and a protruding portion 22 that protrudes downward from the outer surface of the main body portion 21. The main body portion 21 is formed in a substantially cylindrical shape. The protruding portion 22 is formed in a substantially rectangular shape. A rotating shaft member 21a that rotates about the rotating shaft C is accommodated in the main body portion 21. The rotating shaft C of the rotating shaft member 21a extends in the left-right direction. However, the shape of the main body portion 21 is not particularly limited, and any shape can be adopted. The shape of the protruding portion 22 is not particularly limited, and any shape can be adopted. Also, the protruding portion 22 can be formed to protrude in any direction.

[0018] For example, a circuit board (not shown) is accommodated in the protruding portion 22. However, the member accommodated in the protruding portion 22 is not limited to the circuit board, and any member can be accommodated.

[0019] On the upper surface of the main body portion 21, a boss base portion 21b protruding upward is formed. The boss base portion 21b is formed in a plate shape. On the left side surface of the boss base portion 21b, a boss 21c protruding rearward is formed. The boss 21c is formed in a cylindrical shape. The boss 21c extends in the front-rear direction and has a female screw hole 21d that opens rearward.

[0020] 3. Vibration and Noise Isolation Device 10a Referring to FIGS. 1 to 4, the vibration and noise isolation device 10a will be described. The vibration and noise isolation device 10a includes a bracket main body 30, a vibration isolation device 40, and a sound insulation cover 50.

[0021] 3.1. Bracket Main Body 30 The bracket main body 30 is made of metal such as aluminum or stainless steel. The bracket main body 30 is formed into a predetermined shape by bending or casting a metal plate material. In this embodiment, the bracket main body 30 is formed by bending a metal plate material.

[0022] As shown in FIG. 2, the bracket main body 30 includes a first attachment portion 31 attached to the vehicle electric auxiliary machine 20, a second attachment portion 32 attached to the vehicle body B of the vehicle, and a third attachment portion 33 to which the sound insulation cover 50 is attached. The first attachment portion 31, the second attachment portion 32, and the third attachment portion 33 are integrally formed.

[0023] As shown in FIGS. 1 to 4, the first attachment portion 31 extends in the direction of the rotation axis C of the rotation shaft member 21a (the left-right direction in this embodiment). The first attachment portion 31 according to this embodiment is formed in a rectangular shape in which the left-right direction is the longitudinal direction and the up-down direction is the short side direction. Further, the first attachment portion 31 has a first main surface 31a attached to the vehicle electric auxiliary machine 20. In this embodiment, the front surface of the first attachment portion 31 is the first main surface 31a. Among the first attachment portion 31, the surface on the side opposite to the first main surface 31a (the rear surface in this embodiment) is the first back surface 31b.

[0024] The third attachment portion 33 extends downward from the lower end portion of the first attachment portion 31. The third attachment portion 33 is formed in a substantially rectangular shape with the left - right direction being the longitudinal direction and the up - down direction being the short - hand direction. On the first main surface 31a that is continuous with the first attachment portion 31 among the third attachment portion 33, a sound - proof cover 50 is attached. The third attachment portion 33 is formed in a gentle curved - surface shape that protrudes rearward. The front surface of the third attachment portion 33 forms a part of a circumference.

[0025] As shown in FIGS. 3 to 4, at both left - right end portions of the third attachment portion 33 and at the lower - end edge of the third attachment portion 33, a second attachment portion 32 that protrudes forward is formed. The second attachment portion 32 includes an extension portion 34 formed in a rectangular shape when viewed from above and a vibration - proof device attachment portion 35 formed at the front - end portion of the extension portion 34 and formed in a disc - shape when viewed from above. The rear - end portion of the extension portion 34 is continuous with the third attachment portion 33, and the front - end portion of the extension portion 34 is continuous with the vibration - proof device attachment portion 35.

[0026] As shown in FIG. 4, the length dimension in the front - rear direction of the extension portion 34 is set so that, when viewed from above, the center of the vibration - proof device attachment portion 35 is disposed at a position substantially overlapping the rotation axis C. The center of the vibration - proof device attachment portion 35 and the rotation axis C may be disposed at positions that overlap when viewed from above, or may be disposed at positions where they are not completely overlapping when viewed from above but are recognized as substantially overlapping.

[0027] In this embodiment, the two second attachment portions 32 are disposed on both end sides in the direction of the rotation axis C of the rotation - axis member 21a with respect to the vehicle - use electric auxiliary machine 20. However, for example, a configuration in which both of the two second attachment portions 32 are disposed on one end side in the direction of the rotation axis C of the rotation - axis member 21a with respect to the vehicle - use electric auxiliary machine 20 may be adopted, and the second attachment portion 32 can be disposed at an arbitrary position. Also, the number of the second attachment portions 32 is not particularly limited, and it may be one or three or more.

[0028] The second attachment portion 32 has a second main surface 32a that is attached to the vehicle body B of the vehicle. In the present embodiment, the second main surface 32a is the lower surface of the second attachment portion 32. Further, among the second attachment portions 32, the surface on the side opposite to the second main surface 32a (the upper surface in the present embodiment) is the second back surface 32b. In the present embodiment, the first main surface 31a and the second main surface 32a constitute the opposite surfaces of the bracket body 30. Further, in the present embodiment, the first main surface 31a and the second back surface 32b are connected at an angle.

[0029] 3.2. Vibration isolator 40 As shown in FIG. 4, the vibration isolator 40 is attached to the vibration isolator attachment portion 35 of the second attachment portion 32 so as to penetrate in the vertical direction. The vibration isolator 40 includes an outer cylinder 41, an inner cylinder 42 disposed inside the outer cylinder 41, and an elastic body 43 disposed between the outer cylinder 41 and the inner cylinder 42 and connecting the outer cylinder 41 and the inner cylinder 42.

[0030] The outer cylinder 41 and the inner cylinder 42 are formed of a hard material such as metal or synthetic resin. The outer cylinder 41 and the inner cylinder 42 are formed in a substantially cylindrical shape. The length dimension in the vertical direction of the inner cylinder 42 is set to be larger than the length dimension in the vertical direction of the outer cylinder 41.

[0031] The outer cylinder 41 is attached to the vibration isolator attachment portion 35 provided on the second attachment portion 32 of the bracket body 30. The inner cylinder 42 is attached to the vehicle body B of the vehicle. A bolt (not shown) is inserted into the inner cylinder 42 from above, and the inner cylinder 42 and the vehicle body B are fixed by screwing the bolt into a nut (not shown) disposed on the vehicle body B or a female screw hole (not shown) formed in the vehicle body B.

[0032] The elastic body 43 is made of rubber or elastomer and has a plurality (four in the present embodiment) of through holes 43a penetrating in the vertical direction. The through holes 43a are formed in a flat shape in which the radial direction is shorter than the circumferential direction of the elastic body 43. However, the number of the through holes 43a may be two to three, or five or more.

[0033] By interposing the vibration isolation device 40 between the bracket main body 30 and the vehicle body B, the bracket main body 30 and the vehicle body B are elastically connected by the vibration isolation device 40.

[0034] As shown in FIG. 3, the vibration isolation device 40 is located near both ends on the rotating shaft C of the vehicle electric auxiliary machine 20. Thereby, the vibration generated from the vehicle electric auxiliary machine 20 when the rotating shaft member 21a rotates around the rotating shaft C can be effectively absorbed.

[0035] 3.3. Sound insulation cover 50 As shown in FIG. 1, the sound insulation cover 50 includes a first cover 51 attached to the bracket main body 30 and a second cover 52 assembled to the first cover 51. In a state where the first cover 51 is attached to the bracket main body 30, the first cover 51 is open forward. A lock protrusion 51a protruding outward is formed at a position near the opening edge portion on the outer surface of the first cover 51. A lock receiving portion 52a that elastically engages with the lock protrusion 51a is formed at a position on the outer surface of the second cover 52 corresponding to the lock protrusion 51a of the first cover 51. The lock receiving portion 52a is formed in a frame shape.

[0036] When the first cover 51 and the second cover 52 approach each other, the lock receiving portion 52a rides on the lock protrusion 51a and elastically deforms. When the first cover 51 and the second cover 52 further approach each other, the lock receiving portion 52a rides over the lock protrusion 51a and returns to its original shape, and the lock receiving portion 52a engages with the lock protrusion 51a from the rear. Thereby, the first cover 51 and the second cover 52 are assembled. However, the shapes of the lock protrusion 51a and the lock receiving portion 52a are not limited to the above, and any shape can be appropriately selected as long as the lock protrusion 51a and the lock receiving portion can engage with each other. Further, the number of the lock protrusion 51a and the lock receiving portion 52a is not particularly limited. Further, the locations where the lock protrusion 51a and the lock receiving portion 52a are arranged are not particularly limited, and the lock receiving portion 52a may be formed on the first cover 51 and the lock protrusion 51a may be formed on the second cover 52.

[0037] The first cover 51 includes a first main body cover 51b that covers the rear half of the main body 21 of the vehicle electric auxiliary machine 20, a first protruding portion cover 51c that covers the rear half of the protruding portion 22 of the vehicle electric auxiliary machine 20, and a first boss cover 51d that covers the boss 21c and the boss base 21b of the vehicle electric auxiliary machine 20.

[0038] The second cover 52 includes a second main body cover 52b that covers the rear half of the main body 21 of the vehicle electric auxiliary machine 20, a second protruding portion cover 52c that covers the rear half of the protruding portion 22 of the vehicle electric auxiliary machine 20, and a second boss cover 52d that covers the boss 21c and the boss base 21b of the vehicle electric auxiliary machine 20.

[0039] As shown in FIGS. 1 and 2, the front surface of the third attachment portion 33 of the bracket main body 30 is formed in a shape following the rear surface of the first main body cover 51b of the first cover 51. In other words, the curvature of the front surface of the third attachment portion 33 of the bracket main body 30 is formed to be substantially the same as the curvature of the rear surface of the first main body cover 51b of the first cover 51. However, "substantially the same" includes the case where they are the same, and also includes the case where they are not the same but can be recognized as substantially the same.

[0040] The front surface of the third attachment portion 33 of the bracket main body 30 and the rear surface of the first main body cover 51b of the first cover 51 are adhered by an adhesive material. Thereby, the sound insulation cover 50 is attached to the bracket main body 30. In other words, the sound insulation cover 50 is attached to the first main surface 31a side (front side) of the bracket main body 30. As the adhesive material, a hard adhesive material may be used, or a soft adhesive material may also be used. The adhesive material may have elasticity, viscosity, or viscoelasticity. When the adhesive material has viscosity or viscoelasticity, the transmission of vibration from the bracket main body 30 to the sound insulation cover 50 can be further suppressed.

[0041] As shown in Fig. 2, a first engaging portion 53a protruding rearward is formed on the rear surface of the first cover 51 of the soundproof cover 50. Further, a second engaging portion 53b perforated in the front-rear direction is formed at a position corresponding to the first engaging portion 53a on the third mounting portion 33 of the bracket main body 30. When the first engaging portion 53a engages with the second engaging portion 53b, the soundproof cover 50 is temporarily fixed to the bracket main body 30. Thereby, the working efficiency when adhering the soundproof cover 50 to the bracket main body 30 can be improved.

[0042] In a state where the first cover 51 and the second cover 52 are assembled, the vehicle electric accessory 20 is covered with the soundproof cover 50 except for the protruding end portion (rear end portion) of the boss 21c. In other words, the protruding end portion of the boss 21c is not covered with the soundproof cover 50 and is exposed from the soundproof cover 50. Thus, the soundproof cover 50 covers at least a part of the vehicle electric accessory 20 on the first main surface 31a side of the bracket main body 30. The protruding end portion of the boss 21c abuts against the first main surface 31a of the first mounting portion 31 of the bracket main body 30 from the front. In a state where the protruding end portion of the boss 21c abuts against the first main surface 31a of the first mounting portion 31, the bolt 36 is screwed into the female screw hole 21d, whereby the bracket main body 30 is fixed to the vehicle electric accessory 20.

[0043] As shown in Fig. 6, in a state where the first cover 51 and the second cover 52 are assembled, the soundproof cover 50 includes a soundproof layer 54 formed of a first foamed resin material and a protective layer 55 formed of a second foamed resin material having a higher hardness than the first foamed resin material. The soundproof layer 54 is disposed to face the vehicle electric accessory 20. Further, the protective layer 55 is disposed on the side opposite to the vehicle electric accessory 20 with respect to the soundproof layer 54. However, the protective layer 55 may be omitted.

[0044] As the first foamed resin material, for example, urethane foam, acrylic foam, silicone foam, styrene foam, foamed olefin (foamed PP, foamed PE), foamed PVC, foamed EVA, foamed PA, etc. can be preferably used. And the Asker C hardness of the first foamed resin material can be 1 to 60 degrees.

[0045] The hardness of the second foamed resin material is greater than that of the first foamed resin material. The Asker C hardness of the second foamed resin material can be 60 to 99 degrees. The second foamed resin material is different from the first foamed resin material. For example, examples of the second foamed resin material include urethane foam, acrylic foam, silicone foam, styrene foam, foamed olefin (foamed PP, foamed PE), foamed PVC, foamed EVA, foamed PA, etc. Even if urethane foam is applied to the sound insulation layer 54 and the protective layer 55, the urethane foams of both are of different types. Further, as the second foamed resin material, for example, foamed rubber can be used. Examples of the foamed rubber include foamed EPDM, foamed CR, foamed NBR / PVC, foamed ACM, etc.

[0046] The sound insulation layer 54 may be configured to include a heat conductive material (not shown). Thereby, the heat dissipation property of the sound insulation layer 54 can be improved. The heat conductive material can be configured to extend from the side of the vehicle electric auxiliary machine 20 of the sound insulation layer 54 toward the protective layer 55. For example, when the heat conductive material is a heat conductive filler, the heat conductive filler is arranged in the sound insulation layer 54 from the side of the vehicle electric auxiliary machine 20 toward the protective layer 55. Furthermore, the filling amount of the heat conductive material may vary depending on the position of the sound insulation layer 54. Here, the filling amount means the filling amount per unit area in the plane direction of the sound insulation layer 54.

[0047] As shown in FIGS. 6 and 7, a gap 56 is formed between the sound insulation cover 50 and the vehicle electric auxiliary machine 20. In other words, the sound insulation cover 50 covers the vehicle electric auxiliary machine 20 in a non-contact state. In this embodiment, a gap 56 is formed between all the surfaces where the inner surface of the sound insulation cover 50 faces the outer surface of the vehicle electric auxiliary machine 20.

[0048] As shown in Fig. 7, among the outer surfaces of the vehicle electric auxiliary machine 20, the outer surface of the main body portion 21 is defined as the first outer surface 23a, and the outer surface of the protruding portion 22 is defined as the second outer surface 23b. Further, among the sound insulation covers 50, the portion arranged to face the first outer surface 23a is defined as the first inner surface 57a, and the portion arranged to face the second outer surface 23b is defined as the second inner surface 57b. The gap 56 between the first outer surface 23a and the first inner surface 57a is defined as the first gap 56a. Also, the gap 56 between the second outer surface 23b and the second inner surface 57b is defined as the second gap 56b. In this embodiment, the first inner surface 57a and the second inner surface 57b are arranged continuously. In other words, the first inner surface 57a and the second inner surface 57b communicate with each other.

[0049] As shown in Fig. 6, the joint area where the sound insulation cover 50 and the bracket main body 30 are joined is smaller than the opposing area where the sound insulation cover 50 and the vehicle electric auxiliary machine 20 face each other. This will be described in detail below.

[0050] As shown in Fig. 6, in this embodiment, at least the inner surface of the sound insulation cover 50 faces all the outer surfaces of the main body portion 21 of the vehicle electric auxiliary machine 20. On the other hand, the joint area where the sound insulation cover 50 and the bracket main body 30 are joined is set to be smaller than the entire circumference of the outer surface of the sound insulation cover 50. The joint area where the sound insulation cover 50 and the bracket main body 30 are joined can be set to any value within the range of 5% to 90% with respect to the entire circumference of the outer surface of the sound insulation cover 50. Further, it is preferable that the joint area where the sound insulation cover 50 and the bracket main body 30 are joined is set to any value within the range of 10% to 50% with respect to the entire circumference of the outer surface of the sound insulation cover 50.

[0051] 4. An example of the manufacturing process of this embodiment Next, with reference to Figs. 1, 2, and 5, an example of the manufacturing process of the vibration and noise isolation device 10a according to this embodiment will be described. However, the manufacturing process of the vibration and noise isolation device 10a is not limited to the following description.

[0052] The bracket main body 30 is formed into a predetermined shape by bending a metal plate.

[0053] The first cover 51 and the second cover 52 are formed by molding a synthetic resin material.

[0054] An adhesive material is applied to the first cover 51 and the bracket body 30. The first engaging portion 53a of the first cover 51 and the second engaging portion 53b of the bracket body 30 are engaged with each other. Thereby, the first cover 51 and the bracket body 30 are adhered in a positioned state. As a result, a component in which the bracket body 30 and the first cover 51 are assembled can be obtained (see FIG. 1).

[0055] Next, as shown in FIG. 5, a part of the vehicle electric auxiliary machine 20 is covered with the first cover 51. The vehicle electric auxiliary machine 20 is fixed to the bracket body 30 by screwing a bolt 36 into the female screw hole 21d of the boss 21c of the vehicle electric auxiliary machine 20.

[0056] Next, as shown in FIG. 2, the first cover 51 and the second cover 52 are assembled by engaging the lock projection 51a and the lock receiving portion 52a with each other. Thus, the vibration and noise isolation device 10a is completed.

[0057] 5. Effects of this embodiment Subsequently, the effects of this embodiment will be described. The vibration and noise isolation device 10a according to this embodiment includes a bracket body 30 attached to the vehicle electric auxiliary machine 20, a vibration isolation device 40 attached to the bracket body 30 and elastically connecting the bracket body 30 and the vehicle body B of the vehicle, and a sound insulation cover 50 attached to the bracket body 30, the vibration isolation device 40, or the vehicle electric auxiliary machine 20 and covering the vehicle electric auxiliary machine 20 in a non-contact state.

[0058] Also, the fixing structure of the vehicle electric auxiliary machine 20 according to this embodiment uses the above-described vibration and noise isolation device 10a to fix the vehicle electric auxiliary machine 20 to the vehicle body B of the vehicle.

[0059] According to this embodiment, the vibration generated when the vehicle electric auxiliary machine 20 operates is transmitted from the vehicle electric auxiliary machine 20 to the bracket main body 30 and then attenuated by the vibration damping device 40 attached to the bracket main body 30. Thereby, it is possible to suppress the vibration generated in the vehicle electric auxiliary machine 20 from being transmitted to the vehicle body B of the vehicle.

[0060] On the other hand, the sound generated when the vehicle electric auxiliary machine 20 operates is absorbed by the sound insulation cover 50 covering the vehicle electric auxiliary machine 20.

[0061] Since the sound insulation cover 50 and the vehicle electric auxiliary machine 20 are in a non-contact state, it is possible to suppress the transmission of vibration from the vehicle electric auxiliary machine 20 to the sound insulation cover 50. Thereby, it is possible to suppress the generation of sound from the sound insulation cover 50 due to the vibration transmitted from the vehicle electric auxiliary machine 20.

[0062] In addition, a gap 56 is formed between all the surfaces where the inner surface of the sound insulation cover 50 according to this embodiment faces the outer surface of the vehicle electric auxiliary machine 20. Thereby, it is possible to further suppress the transmission of vibration from the vehicle electric auxiliary machine 20 to the sound insulation cover 50.

[0063] In addition, the bracket main body 30 according to this embodiment is attached to a portion of the vehicle electric auxiliary machine 20 that is not covered by the sound insulation cover 50. The vehicle electric auxiliary machine 20 is relatively heavy. For this reason, it is desirable to attach it to the bracket main body 30 relatively firmly. According to this embodiment, since the sound insulation cover 50 does not intervene between the bracket main body 30 and the vehicle electric auxiliary machine 20, the bracket main body 30 and the vehicle electric auxiliary machine 20 can be firmly attached.

[0064] In addition, the bracket main body 30 according to this embodiment has a first main surface 31a attached to the vehicle electric auxiliary machine 20, and the sound insulation cover 50 covers at least a part of the vehicle electric auxiliary machine 20 on the first main surface 31a side of the bracket main body 30. Thereby, it is possible to suppress, by the sound insulation cover 50, at least a part of the noise emitted from the vehicle electric auxiliary machine 20 from being transmitted to the outside.

[0065] The soundproof cover 50 according to this embodiment is attached to the bracket main body 30 by an adhesive material. Thereby, the soundproof cover 50 and the vehicle electric auxiliary machine 20 can be held in a non-contact state.

[0066] Vibrations generated when the vehicle electric auxiliary machine 20 operates may be transmitted to the bracket main body 30 to which the vehicle electric auxiliary machine 20 is attached, and then transmitted to the soundproof cover 50 attached to this bracket main body 30. Also, vibrations generated when the vehicle electric auxiliary machine 20 operates may be directly transmitted to the soundproof cover 50 that covers the vehicle electric auxiliary machine 20. In this embodiment, the joint area where the soundproof cover 50 and the bracket main body 30 are joined is smaller than the opposing area where the soundproof cover 50 and the vehicle electric auxiliary machine 20 face each other. For this reason, vibrations transmitted from the vehicle electric auxiliary machine 20 to the soundproof cover 50 are less when passing through the bracket main body 30 than when directly transmitted from the vehicle electric auxiliary machine 20 to the soundproof cover 50. Furthermore, in this embodiment, since it is in a non-contact state with the vehicle electric auxiliary machine 20, direct transmission of vibrations from the vehicle electric auxiliary machine 20 to the soundproof cover 50 is suppressed. As a result, vibrations transmitted from the vehicle electric auxiliary machine 20 to the soundproof cover 50 can be further reduced.

[0067] The bracket main body 30 according to this embodiment has a first main surface 31a that is attached to the vehicle electric auxiliary machine 20, and a first attachment portion 31 arranged such that the first main surface 31a faces the vehicle electric auxiliary machine 20, and a second attachment portion 32 that is formed integrally with the first attachment portion 31 and is attached to the vehicle body B. The second attachment portion 32 is arranged on the first main surface 31a side of the first attachment portion 31. Since the vehicle electric auxiliary machine 20 is relatively heavy, by arranging the second attachment portion 32 on the first main surface 31a side, the vehicle electric auxiliary machine 20 can be firmly supported.

[0068] The electric auxiliary machine 20 for a vehicle according to this embodiment includes a rotating shaft member 21a. The bracket main body 30 extends in the direction of the rotation axis C of the rotating shaft member 21a, has a first main surface 31a that is attached to the electric auxiliary machine 20 for a vehicle, and is arranged such that the first main surface 31a faces the electric auxiliary machine 20 for a vehicle. The first attachment portion 31 is integrally formed with the first attachment portion 31 and includes a plurality of second attachment portions 32 that are attached to the vehicle body B. At least one of the plurality of second attachment portions 32 is arranged on one end side of the rotating shaft member 21a in the direction of the rotation axis C with respect to the electric auxiliary machine 20 for a vehicle. Thereby, the vibration isolation performance of the vibration isolation and sound insulation device 10a can be improved.

[0069] Furthermore, according to this embodiment, at least one of the other of the plurality of second attachment portions 32 is arranged on the other end side of the rotating shaft member 21a in the direction of the rotation axis C with respect to the electric auxiliary machine 20 for a vehicle. Thereby, the vibration isolation performance of the vibration isolation and sound insulation device 10a can be further improved.

[0070] The sound insulation cover 50 according to this embodiment includes a sound insulation layer 54 formed of a first foamed resin material. Thereby, the vibration isolation performance of the vibration isolation and sound insulation device 10a can be further improved.

[0071] The sound insulation cover 50 according to this embodiment includes a sound insulation layer 54 arranged to face the electric auxiliary machine 20 for a vehicle, and a protective layer 55 formed of a second foamed resin material having a higher hardness than the first foamed resin material and arranged on the side opposite to the electric auxiliary machine 20 with respect to the sound insulation layer 54. Thereby, the sound insulation layer 54 can be protected and the shape of the sound insulation layer 54 can be maintained.

[0072] The vibration isolation and sound insulation device 10a (bracket with vibration isolation and sound insulation function) according to this embodiment includes a bracket main body 30 having a first main surface 31a to which the electric auxiliary machine 20 for a vehicle is attached, a sound insulation cover 50 attached to the bracket main body 30 and covering at least a part of the electric auxiliary machine 20 on the first main surface 31a side of the bracket main body 30, and a vibration isolation device 40 attached to the bracket main body 30 and elastically connecting the bracket main body 30 and the vehicle body B of the vehicle.

[0073] According to this embodiment, since the bracket main body 30, the vibration isolation device 40, and the sound insulation cover 50 can be handled as one part, the number of parts can be reduced as compared with the case where the bracket main body 30, the vibration isolation device 40, and the sound insulation cover 50 are handled as separate parts.

[0074] (Embodiment 2) Next, with reference to FIG. 8, the vibration isolation and sound insulation device 10b according to Embodiment 2 will be described. In this embodiment, a protruding wall 58 protruding from the sound insulation layer 54 toward the main body portion 21 is formed between the first inner surface 57a and the second inner surface 57b of the sound insulation cover 50. The tip of the protruding wall 58 is in contact with the outer surface of the main body portion 21 of the vehicle electric auxiliary machine 20. As a result, the first inner surface 57a and the second inner surface 57b of the sound insulation cover 50 are discontinuously arranged by the protruding wall 58.

[0075] Among the reference numerals used in and after Embodiment 2, those the same as the reference numerals used in the previously described embodiments represent the same components and the like as those in the previously described embodiments unless otherwise specified.

[0076] (Embodiment 3) Next, with reference to FIG. 9, the vibration isolation and sound insulation device 10c according to Embodiment 3 will be described. In this embodiment, the dimension of the first gap 56a is different from the dimension of the second gap 56b. In this embodiment, the dimension of the first gap 56a is smaller than that of the second gap 56b. However, the dimension of the first gap 56a may be larger than that of the second gap 56b.

[0077] However, the thickness of the sound insulation cover 50 may be different between the region forming the first gap 56a and the region forming the second gap 56b.

[0078] (Embodiment 4) Next, with reference to FIG. 10, the vibration isolation and sound insulation device 10d according to Embodiment 4 will be described. In this embodiment, the first inner surface 57a and the second inner surface 57b of the sound insulation cover 50 are discontinuously arranged by the protruding wall 58. Also, in this embodiment, the dimension of the first gap 56a is different from the dimension of the second gap 56b.

[0079] (Embodiment 5) Next, the vibration and noise isolation device 10e according to Embodiment 5 will be described with reference to FIG. 11. In this embodiment, the first main surface 31a and the second main surface 32a constitute surfaces on the same side of the bracket body 30, and the first main surface 31a and the second main surface 32a are connected at an angle.

[0080] (Embodiment 6) Next, the vibration and noise isolation device 10f according to Embodiment 6 will be described with reference to FIG. 12. In this embodiment, the first main surface 31a and the second main surface 32a constitute surfaces on the same side of the bracket body 30, and the first main surface 31a and the second main surface 32a constitute a smoothly continuous surface.

[0081] (Embodiment 7) Next, the vibration and noise isolation device 10g according to Embodiment 7 will be described with reference to FIG. 13. In this embodiment, the first main surface 31a and the second main surface 32a constitute surfaces on opposite sides of the bracket body 30, and the first main surface 31a and the second back surface 32b constitute a smoothly continuous surface.

[0082] (Embodiment 8) Next, the vibration isolation and sound insulation device 10h according to Embodiment 8 will be described with reference to FIG. 14. In this embodiment, the sound insulation cover 50 is attached to the third attachment portion 33 of the bracket main body 30 via a vibration isolation member 61. The vibration isolation member 61 is preferably formed of a material having excellent vibration isolation performance, for example, a foamed resin. Examples of the foamed resin include urethane foam, acrylic foam, silicone foam, styrene foam, foamed olefin (foamed PP, foamed PE), foamed PVC, foamed EVA, foamed PA, etc. The vibration isolation member 61 may be formed of a non-foamed resin having vibration isolation performance, or may be formed of metal. Examples of the non-foamed resin include polyamide resin, olefin resin, styrene resin, urethane resin, silicone resin, acrylic resin, polyvinyl chloride resin, polyethylene resin, polyethylene terephthalate resin, polycarbonate resin, polypropylene resin, ABS resin, EVA resin, carbon fiber plastic (FRP, CFRP), etc. Examples of the metal include iron, aluminum, SUS, copper, and their alloys.

[0083] According to this embodiment, it is possible to suppress the vibration generated by the vehicle electric auxiliary machine 20 and transmitted to the bracket main body 30 from being transmitted from the bracket main body 30 to the sound insulation cover 50. Thereby, it is possible to suppress the sound insulation cover 50 from generating noise due to the transmitted vibration.

[0084] However, the bracket main body 30 and the sound insulation cover 50 may be connected by the above-described vibration isolation device 40. For example, by adopting a configuration in which the bracket main body 30 is connected to the outer cylinder 41 of the vibration isolation device 40 and the sound insulation cover 50 is connected to the inner cylinder 42 of the vibration isolation device 40, it is possible to suppress the vibration from being transmitted from the bracket main body 30 to the sound insulation cover 50.

[0085] (Embodiment 9) Next, referring to FIG. 15, the vibration and noise isolation device 10i according to Embodiment 9 will be described. In this embodiment, the soundproof cover 50 is attached to the vehicle electric auxiliary machine 20 via the vibration isolation member 62. Thereby, it is possible to further suppress the transmission of vibration from the vehicle electric auxiliary machine 20 to the soundproof cover 50.

[0086] (Embodiment 10) Next, referring to FIGS. 16 to 18, the vibration and noise isolation device 10j according to Embodiment 10 will be described. As shown in FIG. 16, in this embodiment, the soundproof cover 50 is connected to the inner cylinder 42 of the vibration isolation device 40 via the connecting member 59. The connecting member 59 is formed to protrude from the soundproof cover 50 toward the inner cylinder 42 of the vibration isolation device 40. The connecting member 59 is attached to the inner cylinder 42 by a known method such as adhesion, heat welding, or screwing.

[0087] As shown in FIGS. 17 and 18, in this embodiment, a gap 56c is formed between the third attachment portion 33 of the bracket body 30 and the soundproof cover 50. In other words, the third attachment portion 33 of the bracket body 30 and the soundproof cover 50 are not in contact. Thereby, the transmission of vibration from the third attachment portion 33 of the bracket body 30 to the soundproof cover 50 is suppressed.

[0088] The vibration generated by the vehicle electric auxiliary machine 20 is transmitted to the bracket body 30. The vibration transmitted to the bracket body 30 is transmitted from the bracket body 30 to the outer cylinder 41 of the vibration isolation device 40 and absorbed by the elastic body 43. Thereby, the vibration transmitted to the inner cylinder 42 of the vibration isolation device 40 is attenuated. Since the soundproof cover 50 is attached to this inner cylinder 42, it is possible to suppress the transmission of the vibration generated by the vehicle electric auxiliary machine 20 to the soundproof cover 50.

[0089] The present invention is not limited to the above-described embodiments, and can be applied to various embodiments without departing from the gist thereof.

Explanation of Reference Numerals

[0090] 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j: Vibration and noise isolation device, 20: Electric auxiliary machine for vehicle, 21: Main body part, 21a: Rotating shaft member, 22: Protrusion, 23a: First outer surface, 23b: Second outer surface, 30: Bracket main body, 31: First mounting part, 31a: First main surface, 31b: First back surface, 32: Second mounting part, 32a: Second main surface, 32b: Second back surface, 33: Third mounting part, 34: Extension part, 35: Vibration isolation device mounting part, 40: Vibration isolation device, 41: Outer cylinder, 42: Inner cylinder, 43: Elastic body, 50: Sound insulation cover, 54: Sound insulation layer, 55: Protection layer, 56: Gap, 56a: First gap, 56b: Second gap, 57a: First inner surface, 57b: Second inner surface, B: Vehicle body, C: Rotating shaft

Claims

1. A vibration and sound damping device attached to a vehicle electric accessory, a bracket body attached to the vehicle electric accessory; a vibration isolation device attached to the bracket body and elastically connecting the bracket body to a vehicle body; a soundproof cover attached to the bracket body, the vibration isolation device, or the vehicle electric auxiliary machine and covering the vehicle electric auxiliary machine in a non-contact manner, The bracket body is attached to a portion of the vehicle electric accessory that is not covered by the soundproof cover.

2. 2. The vibration and sound insulation device according to claim 1, wherein a gap is formed between all of the inner surfaces of the soundproof cover and the outer surface of the vehicle electric accessory that face each other.

3. the bracket body has a first main surface that is attached to the vehicle electric accessory; The vibration and soundproofing device according to claim 1 , wherein the soundproof cover covers at least a portion of the vehicle electric accessory on the first main surface side of the bracket body.

4. 2. The vibration and sound damping device according to claim 1, wherein the soundproof cover is attached to the bracket body.

5. 5. The vibration and sound damping device according to claim 4, wherein the soundproof cover is attached to the bracket body by an adhesive material.

6. 5. The vibration and soundproofing device according to claim 4, wherein the soundproof cover is attached to the bracket body via a vibration-isolating member.

7. 5. The vibration and soundproofing device according to claim 4, wherein a joining area between the soundproof cover and the bracket body is smaller than an opposing area between the soundproof cover and the vehicle electric accessory.

8. The vibration isolation device is an outer cylinder attached to the bracket body; an inner cylinder disposed inside the outer cylinder and attached to the vehicle body; an elastic body that connects the outer cylinder and the inner cylinder, 2. The vibration and soundproofing device according to claim 1, wherein the soundproofing cover is attached to the inner cylinder of the vibration isolating device.

9. 2. The vibration and sound insulation device according to claim 1, wherein the soundproof cover is attached to the vehicle electric accessory through a vibration-isolating member.

10. The bracket body is a first mounting portion having a first main surface to be mounted to the vehicle electric accessory, the first main surface being disposed so as to face the vehicle electric accessory; a second mounting portion integrally formed with the first mounting portion and attached to the vehicle body, The vibration and soundproofing device according to claim 1 , wherein the second mounting portion is disposed on the first main surface side of the first mounting portion.

11. the vehicle electric accessory includes a rotating shaft member, The bracket body is a first mounting portion extending in a rotational axis direction of the rotary shaft member, the first mounting portion having a first main surface to be mounted to the vehicle electric accessory, the first main surface being disposed so as to face the vehicle electric accessory; a plurality of second mounting portions formed integrally with the first mounting portion and attached to the vehicle body, 2. The vibration and sound damping device according to claim 1, wherein at least one of the second attachment portions is disposed on one end side of the rotary shaft member in the rotational axis direction relative to the vehicle electric accessory.

12. 12. The vibration and sound damping device according to claim 11, wherein at least another one of the plurality of second mounting portions is disposed on the other end side of the rotary shaft member in the rotational axis direction relative to the vehicle electric accessory.

13. The vibration and sound insulation device according to claim 1 , wherein the soundproof cover comprises a soundproof layer formed of a first foamed resin material.

14. The soundproof cover is the soundproof layer disposed opposite the vehicle electric accessory; 14. The vibration and soundproofing device according to claim 13, further comprising: a protective layer formed of a second foamed resin material having a greater hardness than the first foamed resin material and positioned on the opposite side of the soundproofing layer from the vehicle electric auxiliary machine.

15. A vibration and sound damping device attached to a vehicle electric auxiliary machine, a bracket body attached to the vehicle electric accessory; a vibration isolation device attached to the bracket body and elastically connecting the bracket body to a vehicle body; a soundproof cover attached to the bracket body, the vibration isolation device, or the vehicle electric auxiliary machine and covering the vehicle electric auxiliary machine in a non-contact manner, The vibration isolation device is an outer cylinder attached to the bracket body; an inner cylinder disposed inside the outer cylinder and attached to the vehicle body; an elastic body that connects the outer cylinder and the inner cylinder, The soundproof cover is attached to the inner tube of the vibration-proof and soundproof device.

16. A fixing structure for a vehicle electric auxiliary machine, using the vibration and sound damping device according to any one of claims 1 to 15.

17. A bracket with vibration and sound insulation functions that is attached to a vehicle electric accessory, a bracket body having a first main surface to which the vehicle electric accessory is attached; a soundproof cover attached to the bracket body and covering at least a portion of the vehicle electric accessory on the first main surface side of the bracket body; a vibration-isolating device attached to the bracket body and elastically connecting the bracket body to a vehicle body, The bracket body is a vibration- and sound-proofing bracket that is attached to a portion of the vehicle electric accessory that is not covered by the soundproof cover.

18. The bracket body is a first mounting portion having the first main surface to be mounted to the vehicle electric accessory, the first main surface being disposed so as to face the vehicle electric accessory; The bracket with vibration and sound insulation functions according to claim 17, further comprising: a second mounting portion that is integrally formed with the first mounting portion and that is mounted to the vehicle body.

19. the vehicle electric accessory includes a rotating shaft member, The bracket body is a plurality of the second mounting portions, At least one of the plurality of second mounting portions is disposed on one end side of the rotary shaft member in the rotational axis direction with respect to the vehicle electric accessory, 19. The vibration and sound insulating bracket according to claim 18, wherein at least one other of the plurality of second mounting portions is disposed on the other end side of the rotary shaft member in the rotational axis direction relative to the vehicle electric accessory.

Images