Vibration-isolation and sound-isolation device, bracket with vibration-isolation and sound-isolation function, and fixing structure for vehicle electric auxiliary machine

Abstract

The present invention provides a vibration-isolation and sound-isolation device (10a) which is attached to a vehicle electric auxiliary machine (20), said vibration-isolation and sound-isolation device (10a) comprising: a bracket body (30) which is attached to the vehicle electric auxiliary machine (20); a vibration-isolation device (40) which is attached to the bracket body (30) and which elastically couples the bracket body (30) and a vehicle body (B) of a vehicle; and a sound-isolation cover (50) which is attached to the bracket body (30), the vibration-isolation device (40), or the vehicle electric auxiliary machine (20) and which covers the vehicle electric auxiliary machine (20) in a non-contact manner.

Description

Vibration and sound insulation device, bracket with vibration and sound insulation functions, and fixing structure for electric auxiliary machine for vehicle

[0001] The present disclosure relates to an anti-vibration and sound-proofing device, a bracket with anti-vibration and sound-proofing functions, and a fixing structure for a vehicle electric accessory.

[0002] Recently, with the spread of electric vehicles (EVs), quietness inside vehicle cabins has improved, but noise and vibrations generated when electric auxiliary machinery mounted on the vehicle operates have become a problem.

[0003] When a vehicle electric accessory operates, it may generate operating noise. If this operating noise enters the vehicle cabin, it may be disturbing to the occupants. Furthermore, when the vehicle electric accessory operates, it may vibrate. This vibration may be transmitted to a bracket connecting the vehicle electric accessory to the vehicle body, and further to the vehicle body, causing the vehicle electric accessory, the bracket, and the vehicle body to vibrate, which may result in noise being generated from the vehicle electric accessory, the bracket, and the vehicle body.

[0004] Patent document 1 describes a technology for reducing noise and vibration generated when a vehicle electric accessory is in operation, in which the outer surface of the vehicle electric accessory is covered with a soundproof cover and vibration-damping material is interposed between the vehicle body and a bracket that attaches the vehicle electric accessory to the vehicle body.

[0005] In the technology disclosed in Patent Document 1, a vehicle electric accessory is fixed to a vehicle body by a support bracket. A vibration-damping material is interposed between the support bracket and the vehicle body. The soundproof 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 vehicle electric accessory on the side opposite the vehicle body from the support bracket. The first cover portion and the second cover portion cover the entire vehicle electric accessory.

[0006] Japanese Patent Application Laid-Open No. 2022-147641

[0007] However, in the above technology, the inner circumferential surface of the soundproof cover contacts the outer circumferential surface of the vehicle electric accessory. Therefore, when the vehicle electric accessory is operating, vibrations generated by the vehicle electric accessory are transmitted to the soundproof cover, which may cause the soundproof cover to vibrate. When the soundproof cover vibrates, there is a problem that noise is generated from the soundproof cover itself.

[0008] Furthermore, in the above-described technology, the components used to mount the vehicle electric accessory to the vehicle body are a support bracket, a vibration-proof material, and a soundproof cover, which results in a problem of a large number of components.

[0009] The present disclosure has been made in consideration of this background, and aims to provide an anti-vibration and soundproofing device, a bracket with anti-vibration and soundproofing functions, and a fixing structure for a vehicle electric accessory that solves any of the above problems.

[0010] One aspect of the present disclosure is an anti-vibration and soundproofing device that is attached to a vehicle electric accessory, the anti-vibration and soundproofing device comprising: a bracket main body that is attached to the vehicle electric accessory; an anti-vibration device that is attached to the bracket main body and elastically connects the bracket main body to the vehicle body; and a soundproofing cover that is attached to the bracket main body, the anti-vibration device, or the vehicle electric accessory and covers the vehicle electric accessory in a non-contact manner.

[0011] Another aspect of the present disclosure is a fixing structure for a vehicle electric accessory using the above-described vibration and soundproofing device.

[0012] Yet another aspect of the present disclosure is a bracket with vibration and sound insulation functions that is attached to a vehicle electric accessory, the bracket including: 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; and a vibration isolation device attached to the bracket body and elastically connecting the bracket body to the vehicle body.

[0013] According to one aspect and another aspect of the present disclosure, vibrations generated by the operation of a vehicle electric accessory are transmitted from the vehicle electric accessory to the bracket body and then damped by the vibration-damping device attached to the bracket body. This prevents vibrations generated by the vehicle electric accessory from being transmitted to the vehicle body. Also, sound generated by the operation of the vehicle electric accessory is absorbed by the soundproof cover that covers the vehicle electric accessory. Furthermore, because the soundproof cover and the vehicle electric accessory are in a non-contact state, transmission of vibrations from the vehicle electric accessory to the soundproof cover is prevented. This prevents noise from being generated from the soundproof cover due to vibrations transmitted from the vehicle electric accessory.

[0014] According to yet another aspect of the present disclosure, the bracket body, the vibration-damping device, and the sound-proof cover can be handled as a single part, thereby reducing the number of parts compared to when the bracket body, the vibration-damping device, and the sound-proof cover are handled as separate parts.

[0015] Note that the symbols in parentheses in the claims indicate the correspondence with the specific means described in the embodiments described below, and do not limit the technical scope of the present disclosure.

[0016] 1 is an exploded side view showing a vibration-proof and sound-proof device according to embodiment 1. FIG. 2 is a side view showing a vibration-proof and sound-proof device according to embodiment 1. FIG. 3 is a front view showing a vibration-proof and sound-proof device according to embodiment 1. FIG. 4 is a plan view showing a vibration-proof and sound-proof device according to embodiment 1. FIG. 5 is a side view showing a state in which the second cover is not assembled to the first cover in the vibration-proof and sound-proof device according to embodiment 1. FIG. 6 is a cross-section taken along line VI-VI in FIG. 3. FIG. 7 is a partially cutaway side cross-sectional view showing a vibration-proof and sound-proof device according to embodiment 1. FIG. 8 is a partially cutaway side cross-sectional view showing a vibration-proof and sound-proof device according to embodiment 2. FIG. 9 is a partially cutaway side cross-sectional view showing a vibration-proof and sound-proof device according to embodiment 3. FIG. 10 is a partially cutaway side cross-sectional view showing a vibration-proof and sound-proof device according to embodiment 4. FIG. 11 is a side view showing a vibration-proof and sound-proof device according to embodiment 5. FIG. 12 is a side view showing a vibration-proof and sound-proof device according to embodiment 6. FIG. 13 is a side view showing a vibration-proof and sound-proof device according to embodiment 7. FIG. 14 is a side view showing a vibration-proof and sound-proof device according to embodiment 8. FIG. 15 is a cross-section taken along line VI-VI in FIG. 3, showing a vibration-proof and sound-proof device according to embodiment 9. 1 is a front view showing an anti-vibration and soundproofing device according to embodiment 10. FIG. 2 is a side view showing an anti-vibration and soundproofing device according to embodiment 10. FIG. 3 is a cross-sectional view showing the anti-vibration and soundproofing device according to embodiment 10, taken along line VI-VI in FIG.

[0017] (Embodiment 1) 1. Schematic Configuration of Vibration and Soundproofing Device 10a As shown in FIG. 1 , a vibration and soundproofing device 10a according to this embodiment (an example of a bracket with vibration and soundproofing functions, an example of a fixing structure for a vehicle electric accessory 20) is attached to a vehicle electric accessory 20 and has the functions of suppressing transmission of vibrations generated by the vehicle electric accessory 20 to a vehicle body B of a vehicle (not shown) and suppressing transmission of noise generated by the vehicle electric accessory 20 to the outside. The vibration and soundproofing device 10a according to this embodiment can be applied to any vehicle electric accessory 20, such as a motor or a compressor. In this embodiment, a compressor will be used as an example of the vehicle electric accessory 20. In the following description, the direction indicated by arrow X is defined as the forward direction, the direction indicated by arrow Y is defined as the leftward direction, and the direction indicated by arrow Z is defined as the upward direction. Furthermore, in the following description, when multiple identical components are shown, only some of the components will be designated by reference numerals, and the reference numerals will be omitted for other components.

[0018] 2. Vehicle Electric Accessory 20 As shown in FIG. 1 , the vehicle electric accessory 20 includes a main body 21 and a protruding portion 22 that protrudes downward from the outer surface of the main body 21. The main body 21 is formed in a generally cylindrical shape. The protruding portion 22 is formed in a generally rectangular shape. The main body 21 houses a rotating shaft member 21a that rotates about a rotation axis C. The rotation axis C of the rotating shaft member 21a extends in the left-right direction. However, the shape of the main body 21 is not particularly limited, and any shape may be adopted. The shape of the protruding portion 22 is not particularly limited, and any shape may be adopted. Furthermore, the protruding portion 22 may be formed to protrude in any direction.

[0019] For example, a circuit board (not shown) is housed in the protruding portion 22. However, the member housed in the protruding portion 22 is not limited to a circuit board, and any member can be housed therein.

[0020] An upwardly protruding boss base 21b is formed on the top surface of the main body 21. The boss base 21b is formed in a plate shape. A rearward protruding boss 21c is formed on the left side surface of the boss base 21b. The boss 21c is formed in a cylindrical shape. The boss 21c extends in the front-rear direction and has a female threaded hole 21d that opens rearward.

[0021] 3. Vibration and Soundproofing Device 10a The vibration and soundproofing device 10a will be described with reference to Figures 1 to 4. The vibration and soundproofing device 10a includes a bracket body 30, a vibration isolator 40, and a soundproofing cover 50.

[0022] 3.1 Bracket Body 30 The bracket body 30 is made of metal such as aluminum or stainless steel. The bracket body 30 is formed into a predetermined shape by bending or casting a metal plate. The bracket body 30 of this embodiment is formed by bending a metal plate.

[0023] 2, the bracket body 30 includes a first mounting portion 31 that is attached to the vehicle electric accessory 20, a second mounting portion 32 that is attached to the vehicle body B, and a third mounting portion 33 to which the soundproof cover 50 is attached. The first mounting portion 31, the second mounting portion 32, and the third mounting portion 33 are integrally formed.

[0024] 1 to 4 , the first mounting portion 31 extends in the direction of the rotation axis C of the rotating shaft member 21a (the left-right direction in this embodiment). The first mounting portion 31 in this embodiment is formed in a rectangular shape with the left-right direction as the longitudinal direction and the up-down direction as the lateral direction. The first mounting portion 31 has a first main surface 31a that is attached to the vehicle electric accessory 20. In this embodiment, the front surface of the first mounting portion 31 is the first main surface 31a. The surface of the first mounting portion 31 opposite the first main surface 31a (the rear surface in this embodiment) is the first back surface 31b.

[0025] The third mounting portion 33 is formed to extend downward from the lower end of the first mounting portion 31. The third mounting portion 33 is formed in a substantially rectangular shape with the left-right direction as the longitudinal direction and the up-down direction as the lateral direction. A soundproof cover 50 is attached to a first main surface 31a of the third mounting portion 33 that continues from the first mounting portion 31. The third mounting portion 33 is formed in a gently curved shape that convexes rearward. The front surface of the third mounting portion 33 forms part of a circumference.

[0026] 3 and 4, second mounting portions 32 that protrude forward are formed on the lower edge of the third mounting portion 33 at both left and right ends of the third mounting portion 33. The second mounting portion 32 includes an extension portion 34 that is rectangular when viewed from above, and an anti-vibration device mounting portion 35 that is formed at the front end of the extension portion 34 and has a disk shape when viewed from above. The rear end of the extension portion 34 is continuous with the third mounting portion 33, and the front end of the extension portion 34 is continuous with the anti-vibration device mounting portion 35.

[0027] 4, the longitudinal length of the extension 34 is set so that, when viewed from above, the center of the vibration isolation device mounting portion 35 is positioned so that it substantially overlaps with the rotation axis C. The center of the vibration isolation device mounting portion 35 and the rotation axis C may be positioned so that they overlap when viewed from above, or they may be positioned so that they can be recognized as substantially overlapping, even if they do not completely overlap when viewed from above.

[0028] In this embodiment, the two second mounting portions 32 are disposed on both ends of the rotating shaft member 21a in the direction of the rotational axis C with respect to the vehicle electric accessory 20. However, for example, a configuration in which both of the two second mounting portions 32 are disposed on one end of the rotating shaft member 21a in the direction of the rotational axis C with respect to the vehicle electric accessory 20 may also be used, and the second mounting portions 32 may be disposed in any position. Furthermore, the number of second mounting portions 32 is not particularly limited, and may be one, or three or more.

[0029] The second mounting portion 32 has a second main surface 32a that is attached to the vehicle body B of the vehicle. In this embodiment, the second main surface 32a is the lower surface of the second mounting portion 32. Furthermore, the surface of the second mounting portion 32 opposite the second main surface 32a (the upper surface in this embodiment) is the second back surface 32b. In this embodiment, the first main surface 31a and the second main surface 32a form opposite surfaces of the bracket main body 30. Furthermore, in this embodiment, the first main surface 31a and the second back surface 32b are connected at an angle.

[0030] 4, the vibration-isolating device 40 is attached to the vibration-isolating device attachment portion 35 of the second attachment portion 32 so as to penetrate therethrough in the vertical direction. The vibration-isolating device 40 includes an outer cylinder 41, an inner cylinder 42 arranged inside (on the inside of) the outer cylinder 41, and an elastic body 43 arranged between the outer cylinder 41 and the inner cylinder 42 to connect the outer cylinder 41 and the inner cylinder 42.

[0031] The outer cylinder 41 and the inner cylinder 42 are made 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 vertical length of the inner cylinder 42 is set to be greater than the vertical length of the outer cylinder 41.

[0032] The outer tube 41 is attached to the vibration isolation device attachment portion 35 provided on the second attachment portion 32 of the bracket main body 30. The inner tube 42 is attached to the vehicle body B. A bolt (not shown) is inserted into the inner tube 42 from above, and the bolt is threaded into a nut (not shown) arranged on the vehicle body B or a female threaded hole (not shown) formed in the vehicle body B, thereby fixing the inner tube 42 to the vehicle body B.

[0033] The elastic body 43 is made of rubber or elastomer and has multiple (four in this embodiment) hollow portions 43a that penetrate in the vertical direction. The hollow portions 43a are formed in a flat shape that is shorter in the radial direction than in the circumferential direction of the elastic body 43. However, the number of hollow portions 43a may be two to three, or five or more.

[0034] The vibration-isolating device 40 is interposed between the bracket body 30 and the vehicle body B, so that the bracket body 30 and the vehicle body B are elastically connected by the vibration-isolating device 40 .

[0035] 3, the vibration isolation devices 40 are located near both ends of the rotation axis C of the vehicle electric accessory 20. This allows the vibration isolation devices 40 to effectively absorb vibrations generated from the vehicle electric accessory 20 when the rotating shaft member 21a rotates around the rotation axis C.

[0036] 1, the soundproof cover 50 includes a first cover 51 attached to the bracket body 30 and a second cover 52 assembled to the first cover 51. When the first cover 51 is attached to the bracket body 30, the first cover 51 opens forward. A locking protrusion 51a protruding outward is formed on the outer surface of the first cover 51 near the edge of the opening. A locking receiving portion 52a that elastically engages with the locking protrusion 51a is formed on the outer surface of the second cover 52 at a position corresponding to the locking protrusion 51a of the first cover 51. The locking receiving portion 52a is formed in a frame shape.

[0037] When the first cover 51 and the second cover 52 approach each other, the lock receiving portions 52a ride up onto the lock protrusions 51a and elastically deform. As the first cover 51 and the second cover 52 approach each other further, the lock receiving portions 52a ride over the lock protrusions 51a and return to their original shape, engaging with the lock protrusions 51a from behind. This assembles the first cover 51 and the second cover 52. However, the shapes of the lock protrusions 51a and the lock receiving portions 52a are not limited to those described above, and any shape can be appropriately selected as long as the lock protrusions 51a and the lock receiving portions can be engaged with each other. Furthermore, the number of lock protrusions 51a and the lock receiving portions 52a is not particularly limited. Furthermore, the locations where the lock protrusions 51a and the lock receiving portions 52a are disposed are not particularly limited; the lock receiving portions 52a may be formed on the first cover 51 and the lock protrusions 51a may be formed on the second cover 52.

[0038] The first cover 51 comprises a first main body cover 51b that covers the rear half of the main body 21 of the vehicle electric accessory 20, a first protrusion cover 51c that covers the rear half of the protrusion 22 of the vehicle electric accessory 20, and a first boss cover 51d that covers the boss 21c and boss base 21b of the vehicle electric accessory 20.

[0039] 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 accessory 20, a second protrusion cover 52c that covers the rear half of the protrusion 22 of the vehicle electric accessory 20, and a second boss cover 52d that covers the boss 21c and boss base 21b of the vehicle electric accessory 20.

[0040] 1 and 2, the front surface of the third mounting portion 33 of the bracket body 30 is formed in a shape that follows the shape of 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 mounting portion 33 of the bracket 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 cases where they are the same, and also includes cases where they can be recognized as being substantially the same even if they are not the same.

[0041] The front surface of the third mounting 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 bonded with an adhesive material. In this way, the soundproof cover 50 is attached to the bracket main body 30. In other words, the soundproof 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 or a soft adhesive material may be used. The adhesive material may be elastic, viscous, or viscoelastic. When the adhesive material is viscous or viscoelastic, transmission of vibration from the bracket main body 30 to the soundproof cover 50 can be further suppressed.

[0042] 2, a first engagement portion 53a that protrudes rearward is formed on the rear surface of the first cover 51 of the soundproof cover 50. Furthermore, a second engagement portion 53b that is drilled in the front-rear direction is formed on the third attachment portion 33 of the bracket main body 30 at a position corresponding to the first engagement portion 53a. The first engagement portion 53a engages with the second engagement portion 53b, thereby temporarily fixing the soundproof cover 50 to the bracket main body 30. This improves work efficiency when bonding the soundproof cover 50 to the bracket main body 30.

[0043] With the first cover 51 and the second cover 52 assembled, the vehicle electric accessory 20 is covered by the soundproof cover 50 except for the protruding end (rear end) of the boss 21c. In other words, the protruding end of the boss 21c is not covered by the soundproof cover 50 and is exposed from the soundproof cover 50. In this manner, the soundproof cover 50 covers at least a portion of the vehicle electric accessory 20 on the first main surface 31a side of the bracket main body 30. The protruding end 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. With the protruding end of the boss 21c abutting against the first main surface 31a of the first mounting portion 31, the bolt 36 is threaded into the female threaded hole 21d, thereby fixing the bracket main body 30 to the vehicle electric accessory 20.

[0044] 6 , when the first cover 51 and the second cover 52 are assembled, the soundproof cover 50 includes a soundproof layer 54 made of a first foamed resin material and a protective layer 55 made of a second foamed resin material having a harder hardness than the first foamed resin material. The soundproof layer 54 is disposed facing the vehicle electric accessory 20. The protective layer 55 is disposed on the opposite side of the soundproof layer 54 from the vehicle electric accessory 20. However, the protective layer 55 may be omitted.

[0045] Suitable examples of the first foaming resin material include urethane foam, acrylic foam, silicone foam, styrene foam, foamed olefin (foamed PP, foamed PE), foamed PVC, foamed EVA, and foamed PA. The Asker C hardness of the first foaming resin material can be 1 to 60 degrees.

[0046] 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. 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, and foamed PA. Note that even if urethane foam is applied to the soundproofing layer 54 and the protective layer 55, the two urethane foams are different types. Furthermore, foamed rubber can be used as the second foamed resin material. Examples of foamed rubber include foamed EPDM, foamed CR, foamed NBR / PVC, and foamed ACM.

[0047] The soundproof layer 54 may be configured to include a thermally conductive material (not shown). This improves the heat dissipation properties of the soundproof layer 54. The thermally conductive material may extend from the vehicle electric accessory 20 side of the soundproof layer 54 toward the protective layer 55. For example, if the thermally conductive material is a thermally conductive filler, the thermally conductive filler is arranged in the soundproof layer 54 from the vehicle electric accessory 20 side toward the protective layer 55. Furthermore, the amount of thermally conductive material filled may vary depending on the position on the soundproof layer 54. Note that the filling amount here refers to the amount filled per unit area in the surface direction of the soundproof layer 54.

[0048] 6 and 7 , a gap 56 is formed between the soundproof cover 50 and the vehicle electric accessory 20. In other words, the soundproof cover 50 covers the vehicle electric accessory 20 in a non-contact manner. In this embodiment, the gap 56 is formed between all surfaces of the inner surface of the soundproof cover 50 and the outer surface of the vehicle electric accessory 20 that face each other.

[0049] As shown in FIG. 7 , among the outer surfaces of the vehicle electric accessory 20, the outer surface of the main body 21 is designated as a first outer surface 23a, and the outer surface of the protruding portion 22 is designated as a second outer surface 23b. Furthermore, the portion of the soundproof cover 50 facing the first outer surface 23a is designated as a first inner surface 57a, and the portion facing the second outer surface 23b is designated as a second inner surface 57b. A gap 56 between the first outer surface 23a and the first inner surface 57a is designated as a first gap 56a. Furthermore, a gap 56 between the second outer surface 23b and the second inner surface 57b is designated as a second gap 56b. In this embodiment, the first inner surface 57a and the second inner surface 57b are continuously disposed. In other words, the first inner surface 57a and the second inner surface 57b are in communication with each other.

[0050] 6, the joining area between the soundproof cover 50 and the bracket body 30 is smaller than the opposing area between the soundproof cover 50 and the vehicle electric accessory 20. This will be described in detail below.

[0051] As shown in Fig. 6, in this embodiment, at least the inner surface of the soundproof cover 50 faces the entire outer surface of the main body 21 of the vehicle electric accessory 20. Meanwhile, the joint area where the soundproof 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 soundproof cover 50. The joint area where the soundproof cover 50 and the bracket main body 30 are joined can be set to any value within a range of 5% to 90% of the entire circumference of the outer surface of the soundproof cover 50. Furthermore, it is preferable that the joint area where the soundproof cover 50 and the bracket main body 30 are joined be set to any value within a range of 10% to 50% of the entire circumference of the outer surface of the soundproof cover 50.

[0052] 4. Example of Manufacturing Process of This Embodiment Next, an example of a manufacturing process of the vibration and soundproofing device 10a according to this embodiment will be described with reference to Figures 1, 2, and 5. However, the manufacturing process of the vibration and soundproofing device 10a is not limited to the following description.

[0053] The bracket body 30 is formed into a predetermined shape by bending a metal plate material.

[0054] The first cover 51 and the second cover 52 are formed by molding a synthetic resin material.

[0055] An adhesive material is applied to the first cover 51 and the bracket body 30. The first engagement portion 53a of the first cover 51 is engaged with the second engagement portion 53b of the bracket body 30. This allows the first cover 51 and the bracket body 30 to be bonded in a positioned state. As a result, a part in which the bracket body 30 and the first cover 51 are assembled can be obtained (see FIG. 1).

[0056] 5 , a portion of the vehicle electric accessory 20 is covered with the first cover 51. The vehicle electric accessory 20 is fixed to the bracket body 30 by threading the bolt 36 into the female threaded hole 21 d of the boss 21 c of the vehicle electric accessory 20.

[0057] 2, the locking projections 51a are engaged with the locking receiving portions 52a to assemble the first cover 51 and the second cover 52. In this manner, the vibration and soundproofing device 10a is completed.

[0058] 5. Effects of this Embodiment Next, the effects of this embodiment will be described. The vibration and soundproofing device 10a according to this embodiment includes a bracket main body 30, a vibration-isolating device 40, and a soundproofing cover 50. The bracket main body 30 is attached to the vehicle electric accessory 20. The vibration-isolating device 40 is attached to the bracket main body 30, and elastically connects the bracket main body 30 to the vehicle body B. The soundproofing cover 50 is attached to the bracket main body 30, the vibration-isolating device 40, or the vehicle electric accessory 20, and covers the vehicle electric accessory 20 in a non-contact manner.

[0059] The fixing structure for the vehicle electric accessory 20 according to this embodiment uses the vibration and sound damping device 10a to fix the vehicle electric accessory 20 to the vehicle body B of the vehicle.

[0060] According to this embodiment, vibrations generated by the operation of the vehicle electric accessory 20 are transmitted from the vehicle electric accessory 20 to the bracket body 30, and then damped by the vibration-damping device 40 attached to the bracket body 30. This prevents vibrations generated in the vehicle electric accessory 20 from being transmitted to the vehicle body B.

[0061] On the other hand, the sound generated by the operation of the vehicle electric accessory 20 is absorbed by the soundproof cover 50 that covers the vehicle electric accessory 20 .

[0062] Since the soundproof cover 50 and the vehicle electric accessory 20 are in a non-contact state, transmission of vibrations from the vehicle electric accessory 20 to the soundproof cover 50 is suppressed. This suppresses noise from being generated from the soundproof cover 50 due to vibrations transmitted from the vehicle electric accessory 20.

[0063] Furthermore, gaps 56 are formed between all surfaces of the inner surface of the soundproof cover 50 according to this embodiment and the outer surface of the vehicle electric accessory 20, where the surfaces face each other. This further reduces the transmission of vibrations from the vehicle electric accessory 20 to the soundproof cover 50.

[0064] Furthermore, the bracket body 30 according to this embodiment is attached to a portion of the vehicle electric accessory 20 that is not covered by the soundproof cover 50. The vehicle electric accessory 20 is relatively heavy. For this reason, it is desirable to attach it relatively firmly to the bracket body 30. According to this embodiment, since the soundproof cover 50 is not interposed between the bracket body 30 and the vehicle electric accessory 20, the bracket body 30 and the vehicle electric accessory 20 can be attached firmly.

[0065] Furthermore, the bracket body 30 according to this embodiment has a first main surface 31a that is attached to the vehicle electric accessory 20, and the soundproof cover 50 covers at least a portion of the vehicle electric accessory 20 on the side of the first main surface 31a of the bracket body 30. This allows the soundproof cover 50 to suppress transmission of at least a portion of the noise emitted from the vehicle electric accessory 20 to the outside.

[0066] The soundproof cover 50 according to this embodiment is attached to the bracket body 30 by an adhesive material, which allows the soundproof cover 50 and the vehicle electric accessory 20 to be kept out of contact with each other.

[0067] Vibrations generated by the operation of the vehicle electric accessory 20 may be transmitted to the bracket body 30 to which the vehicle electric accessory 20 is attached, and then to the soundproof cover 50 attached to the bracket body 30. Furthermore, vibrations generated by the operation of the vehicle electric accessory 20 may be transmitted directly to the soundproof cover 50 that covers the vehicle electric accessory 20. In this embodiment, the joint area between the soundproof cover 50 and the bracket body 30 is smaller than the opposing area between the soundproof cover 50 and the vehicle electric accessory 20. Therefore, the amount of vibration transmitted from the vehicle electric accessory 20 to the soundproof cover 50 via the bracket body 30 is less than the amount of vibration transmitted directly from the vehicle electric accessory 20 to the soundproof cover 50. Furthermore, in this embodiment, since the vehicle electric accessory 20 is in a non-contact state, direct transmission of vibration from the vehicle electric accessory 20 to the soundproof cover 50 is suppressed. As a result, the vibration transmitted from the vehicle electric accessory 20 to the soundproof cover 50 can be further reduced.

[0068] The bracket main body 30 according to this embodiment includes a first mounting portion 31 and a second mounting portion 32. The first mounting portion 31 has a first main surface 31a that is attached to the vehicle electric accessory 20, and is disposed so that the first main surface 31a faces the vehicle electric accessory 20. The second mounting portion is formed integrally with the first mounting portion 31, and is attached to the vehicle body B. The second mounting portion 32 is disposed on the first main surface 31a side of the first mounting portion 31. Because the vehicle electric accessory 20 is relatively heavy, by disposing the second mounting portion 32 on the first main surface 31a side, the vehicle electric accessory 20 can be firmly supported.

[0069] The vehicle electric accessory 20 according to this embodiment includes a rotating shaft member 21a. The bracket body 30 includes a first mounting portion 31 and a plurality of second mounting portions 32. The first mounting portion 31 extends in the direction of the rotation axis C of the rotating shaft member 21a and has a first main surface 31a that is attached to the vehicle electric accessory 20, with the first main surface 31a being disposed facing the vehicle electric accessory 20. The plurality of second mounting portions 32 are formed integrally with the first mounting portion 31 and are attached to the vehicle body B. At least one of the plurality of second mounting portions 32 is disposed on one end side of the rotating shaft member 21a in the direction of the rotation axis C, relative to the vehicle electric accessory 20. This improves the vibration isolation performance of the vibration and soundproofing device 10a.

[0070] Furthermore, according to this embodiment, at least one other of the plurality of second mounting portions 32 is disposed on the other end side of the rotating shaft member 21a in the direction of the rotational axis C with respect to the vehicle electric accessory 20. This further improves the vibration isolation performance of the vibration and soundproofing device 10a.

[0071] The soundproof cover 50 according to this embodiment includes a soundproof layer 54 formed of a first foamed resin material, which can further improve the vibration-isolating performance of the vibration-proof and soundproofing device 10a.

[0072] The soundproof cover 50 according to this embodiment includes a soundproof layer 54 and a protective layer 55. The soundproof layer 54 is disposed opposite the vehicle electric accessory 20. The protective layer 55 is formed of a second foamed resin material that has a higher hardness than the first foamed resin material, and is disposed on the side of the soundproof layer 54 opposite the vehicle electric accessory 20. This protects the soundproof layer 54 and also makes it possible to maintain the shape of the soundproof layer 54.

[0073] The vibration and soundproofing device 10a (a bracket with vibration and soundproofing functions) according to this embodiment includes a bracket body 30, a soundproofing cover 50, and a vibration-isolating device 40. The bracket body 30 has a first main surface 31a to which a vehicle electric accessory 20 is attached. The soundproofing cover 50 is attached to the bracket body 30 and covers at least a portion of the vehicle electric accessory 20 on the side of the first main surface 31a of the bracket body 30. The vibration-isolating device 40 is attached to the bracket body 30 and elastically connects the bracket body 30 to the vehicle body B.

[0074] According to this embodiment, the bracket body 30, the vibration-damping device 40, and the soundproof cover 50 can be handled as a single part, thereby reducing the number of parts compared to when the bracket body 30, the vibration-damping device 40, and the soundproof cover 50 are handled as separate parts.

[0075] (Embodiment 2) Next, a vibration and soundproofing device 10b according to embodiment 2 will be described with reference to Figure 8. In this embodiment, a protruding wall 58 that protrudes from the soundproof layer 54 toward the main body 21 is formed between the first inner surface 57a and the second inner surface 57b of the soundproof cover 50. The tip of the protruding wall 58 abuts against the outer surface of the main body 21 of the vehicle electric accessory 20. As a result, the first inner surface 57a and the second inner surface 57b of the soundproof cover 50 are discontinuously arranged by the protruding wall 58.

[0076] Note that, among the symbols used in the second and subsequent embodiments, the same symbols as those used in the previous embodiments represent the same components, etc. as those in the previous embodiments, unless otherwise specified.

[0077] Third Embodiment Next, a vibration and soundproofing device 10c according to a third embodiment will be described with reference to Fig. 9. In this embodiment, the size of the first gap 56a is different from the size of the second gap 56b. In this embodiment, the size of the first gap 56a is smaller than the size of the second gap 56b. However, the size of the first gap 56a may be larger than the size of the second gap 56b.

[0078] However, the thickness of the soundproof cover 50 may be different between the area where the first gap 56a is formed and the area where the second gap 56b is formed.

[0079] Fourth Embodiment Next, a vibration and soundproofing device 10d according to a fourth embodiment will be described with reference to Fig. 10. In this embodiment, the first inner surface 57a and the second inner surface 57b of the soundproof cover 50 are discontinuously arranged by the protruding wall 58. In this embodiment, the size of the first gap 56a is different from the size of the second gap 56b.

[0080] Fifth Embodiment Next, a vibration and soundproofing device 10e according to a fifth embodiment will be described with reference to Fig. 11. In this embodiment, the first main surface 31a and the second main surface 32a constitute the 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.

[0081] Sixth Embodiment Next, a vibration and soundproofing device 10f according to a sixth embodiment will be described with reference to Fig. 12. In this embodiment, the first main surface 31a and the second main surface 32a form surfaces on the same side of the bracket body 30, and the first main surface 31a and the second main surface 32a form a smoothly continuous surface.

[0082] Seventh Embodiment Next, a vibration and soundproofing device 10g according to a seventh embodiment will be described with reference to Fig. 13. In this embodiment, the first main surface 31a and the second main surface 32a form opposite surfaces of the bracket body 30, and the first main surface 31a and the second back surface 32b form a smoothly continuous surface.

[0083] Eighth Embodiment Next, a vibration- and sound-proofing device 10h according to an eighth embodiment will be described with reference to FIG. 14 . In this embodiment, the soundproof cover 50 is attached to the third mounting portion 33 of the bracket body 30 via a vibration-isolating member 61. The vibration-isolating member 61 is preferably formed from a material with excellent vibration-isolating properties, such as a foamed resin. Examples of foamed resins include urethane foam, acrylic foam, silicone foam, styrene foam, foamed olefin (foamed PP, foamed PE), foamed PVC, foamed EVA, and foamed PA. The vibration-isolating member 61 may be formed from a non-foamed resin with vibration-isolating properties, or may be formed from metal. Examples of non-foamed resins 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, and carbon fiber plastic (FRP, CFRP). Examples of the metal include iron, aluminum, SUS, copper, and alloys thereof.

[0084] According to this embodiment, vibrations generated in the vehicle electric accessory 20 and transmitted to the bracket main body 30 can be prevented from being transmitted from the bracket main body 30 to the soundproof cover 50. This prevents the soundproof cover 50 from generating noise due to the transmitted vibrations.

[0085] However, the bracket body 30 and the soundproof cover 50 may be connected by the above-mentioned vibration-isolating device 40. For example, by configuring the bracket body 30 to be connected to the outer tube 41 of the vibration-isolating device 40 and the soundproof cover 50 to be connected to the inner tube 42 of the vibration-isolating device 40, it is possible to suppress transmission of vibrations from the bracket body 30 to the soundproof cover 50.

[0086] 15, a vibration and soundproofing device 10i according to a ninth embodiment will be described. In this embodiment, the soundproofing cover 50 is attached to the vehicle electric accessory 20 via a vibration-isolating member 62. This further reduces the transmission of vibrations from the vehicle electric accessory 20 to the soundproofing cover 50.

[0087] (Embodiment 10) Next, a vibration and soundproofing device 10j according to embodiment 10 will be described with reference to Figures 16 to 18. As shown in Figure 16, in this embodiment, a soundproofing cover 50 is connected to the inner tube 42 of the vibration damping device 40 via a connecting member 59. The connecting member 59 is formed to protrude from the soundproofing cover 50 toward the inner tube 42 of the vibration damping device 40. The connecting member 59 is attached to the inner tube 42 by a known method such as adhesive bonding, heat welding, or screw fastening.

[0088] 17 and 18 , in this embodiment, a gap 56c is formed between the third mounting portion 33 of the bracket main body 30 and the soundproof cover 50. In other words, the third mounting portion 33 of the bracket main body 30 and the soundproof cover 50 are not in contact with each other. This prevents vibrations from being transmitted from the third mounting portion 33 of the bracket main body 30 to the soundproof cover 50.

[0089] Vibrations generated in the vehicle electric accessory 20 are transmitted to the bracket body 30. The vibrations transmitted to the bracket body 30 are then transmitted from the bracket body 30 to the outer tube 41 of the vibration-damping device 40 and absorbed by the elastic body 43. As a result, the vibrations transmitted to the inner tube 42 of the vibration-damping device 40 are attenuated. Since the soundproof cover 50 is attached to this inner tube 42, the vibrations generated in the vehicle electric accessory 20 can be prevented from being transmitted to the soundproof cover 50.

[0090] The present disclosure is not limited to the above-described embodiments, and can be applied to various embodiments without departing from the spirit of the present disclosure.

Claims

1. An anti-vibration and soundproofing device (10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j) to be attached to a vehicle electric accessory (20), comprising: a bracket body (30) to be attached to the vehicle electric accessory; a vibration-proofing device (40) attached to the bracket body and elastically connecting the bracket body to a vehicle body (B); and a soundproofing cover (50) attached to the bracket body, the vibration-proofing device, or the vehicle electric accessory and covering the vehicle electric accessory in a non-contact manner.

2. The anti-vibration and soundproofing device according to claim 1, wherein gaps (56) are formed between all opposing surfaces of the inner surface of the soundproof cover and the outer surface of the vehicle electric auxiliary machine.

3. The anti-vibration and soundproofing device according to claim 1, wherein the bracket body is attached to a portion of the vehicle electric auxiliary that is not covered by the soundproof cover.

4. The vibration and soundproofing device as described in claim 1, wherein the bracket body has a first main surface (31a) that is attached to the vehicle electric accessory, and the soundproofing cover covers at least a portion of the vehicle electric accessory on the first main surface side of the bracket body.

5. The anti-vibration and soundproofing device according to claim 1, wherein the soundproof cover is attached to the bracket body.

6. The anti-vibration and soundproofing device according to claim 5, wherein the soundproof cover is attached to the bracket body by an adhesive material.

7. The anti-vibration and soundproofing device according to claim 5, wherein the soundproof cover is attached to the bracket body via a vibration-proof member (61).

8. The anti-vibration and soundproofing device according to claim 5, wherein the joint area between the soundproof cover and the bracket body is smaller than the opposing area between the soundproof cover and the vehicle electric auxiliary device.

9. The vibration-proof soundproof device as described in claim 1, comprising: an outer tube (41) attached to the bracket body; an inner tube (42) arranged inside the outer tube and attached to the vehicle body; and an elastic body (43) connecting the outer tube and the inner tube, and the soundproof cover is attached to the inner tube of the vibration-proof device.

10. The vibration and soundproofing device according to claim 1, wherein the soundproof cover is attached to the vehicle electric accessory via a vibration isolating member (62).

11. The bracket body comprises: a first mounting portion (31) having a first main surface (31a) to be attached to the vehicle electric accessory and arranged so that the first main surface faces the vehicle electric accessory; and a second mounting portion (32) formed integrally with the first mounting portion and attached to the vehicle body, the second mounting portion being arranged on the first main surface side of the first mounting portion.An anti-vibration and soundproofing device as described in claim 1.

12. The vehicle electric accessory comprises a rotating shaft member (21a), and the bracket main body comprises: a first mounting portion extending in the direction of the rotational axis (C) of the rotating shaft member, having a first main surface to be attached to the vehicle electric accessory, and arranged so that the first main surface faces the vehicle electric accessory; and a plurality of second mounting portions formed integrally with the first mounting portion and attached to the vehicle body, and at least one of the plurality of second mounting portions is arranged on one end side of the rotating shaft member in the rotational axis direction relative to the vehicle electric accessory.

13. An anti-vibration and soundproofing device as described in claim 12, wherein at least another of the plurality of second mounting portions is disposed on the other end side of the rotating shaft member in the rotational axis direction relative to the vehicle electric accessory.

14. The anti-vibration and sound insulation device according to claim 1, wherein the soundproof cover comprises a soundproof layer (54) formed of a first foamed resin material.

15. The anti-vibration and soundproofing device as described in claim 14, wherein the soundproof cover comprises: a soundproof layer arranged opposite the vehicle electric accessory; and a protective layer (55) formed of a second foamed resin material having a harderness than the first foamed resin material and arranged on the opposite side of the soundproof layer from the vehicle electric accessory.

16. A fixing structure for an electric auxiliary machine for a vehicle using an anti-vibration and soundproofing device according to any one of claims 1 to 15.

17. A bracket with anti-vibration and soundproofing functions to be attached to an electric accessory for a vehicle, comprising: a bracket body having a first main surface to which the electric accessory for the vehicle is attached; a soundproof cover attached to the bracket body and covering at least a portion of the electric accessory for the vehicle on the first main surface side of the bracket body; and a vibration-proof device attached to the bracket body and elastically connecting the bracket body to the body of the vehicle.

18. A bracket with vibration and sound insulation functions as described in claim 17, wherein the bracket body comprises: a first mounting portion having the first main surface that is attached to the vehicle electric accessory and arranged so that the first main surface faces the vehicle electric accessory; and a second mounting portion that is formed integrally with the first mounting portion and is attached to the vehicle body.

19. A bracket with vibration and sound insulation functions as described in claim 18, wherein the vehicle electric accessory comprises a rotating shaft member, the bracket main body comprises a plurality of the second mounting portions, at least one of the plurality of second mounting portions is arranged on one end side of the rotating shaft member in the rotational shaft direction relative to the vehicle electric accessory, and at least another one of the plurality of second mounting portions is arranged on the other end side of the rotating shaft member in the rotational shaft direction relative to the vehicle electric accessory.

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