CN214112256U

CN214112256U - Two-stage vibration isolation motor suspension bush, motor suspension and electric automobile

Info

Publication number: CN214112256U
Application number: CN202023222709.6U
Authority: CN
Inventors: 钱学朋; 杜鹏程; 李芳�; 石伟; 李龙; 牛玉龙; 王飞
Original assignee: Nuobo Rubber Production Co Ltd
Current assignee: Nuobo Rubber Production Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-09-03
Anticipated expiration: 2030-12-28

Abstract

The utility model relates to a two-stage vibration isolation motor suspension bush and motor suspension and electric automobile, wherein, two-stage vibration isolation motor suspension bush includes the bush body, and this bush body includes inner tube, one-level vibration isolation colloid, one-level outer tube and second grade vibration isolation colloid and the second grade outer tube that from interior to exterior linked firmly in proper order. Wherein, inner tube, one-level vibration isolation colloid, one-level outer tube, second grade vibration isolation colloid and second grade outer tube vulcanize respectively and link firmly to be equipped with the opening of following the axial through arrangement on the bush body, and the opening radially runs through second grade outer tube and the setting of second grade vibration isolation colloid along the bush body. The two-stage vibration isolation motor suspension bushing can effectively reduce high-frequency dynamic stiffness, adjust the overall mode and have better vibration isolation effect; in addition, through setting up the opening, the bush body undergauge of can being convenient for from this can increase the decrement of bush body to reduce the internal stress of product, thereby can promote this two-stage vibration isolation motor suspension bush's durability.

Description

Two-stage vibration isolation motor suspension bush, motor suspension and electric automobile

Technical Field

The utility model relates to a motor suspension technical field, in particular to two-stage vibration isolation motor suspension bush, simultaneously, the utility model discloses still relate to a motor suspension that has this two-stage vibration isolation motor suspension bush to and use the electric automobile who has this motor suspension.

Background

The suspension system of the motor-driven power assembly is an important subsystem of a vibration system of the electric vehicle, and the vibration transmission characteristic of the suspension system directly influences the riding comfort of passengers. At present, most of motor suspension bushings in the market adopt rubber to carry out vibration isolation, and are primary vibration isolation devices, because of the characteristic that rubber has the high frequency hardening, along with excitation frequency's increase, the rigidity of suspension can obviously promote, especially high frequency section, rigidity is promoted by multiples to lead to the vibration isolation rate of motor suspension bushing to descend, the vibration isolation effect worsens.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a two-stage vibration isolation motor suspension bushing having a better vibration isolation effect.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a two-stage vibration isolation motor suspension bush, includes the bush body, the bush body includes inner tube, one-level vibration isolation colloid, one-level outer tube and second grade vibration isolation colloid and the second grade outer tube that from interior to exterior linked firmly in proper order, the inner tube the one-level vibration isolation colloid the one-level outer tube the second grade vibration isolation colloid with the second grade outer tube vulcanizes respectively and links firmly, and in be equipped with the opening that the axial runs through to arrange on the bush body, just the opening is followed the radial of bush body runs through the second grade outer tube reaches the setting of second grade vibration isolation colloid.

Further, the width k of the opening is not less than 2 mm.

Furthermore, the primary vibration isolation colloid is different from the secondary vibration isolation colloid in rubber material.

Further, the primary vibration isolation colloid and/or the secondary vibration isolation colloid are solid structures.

Furthermore, a through hole which is axially arranged in a penetrating way is formed in the primary vibration isolation colloid.

Furthermore, the through holes are arranged along the circumferential direction of the bushing body at intervals, and the primary vibration isolation colloid is similar to a cross shape, a herringbone shape or a straight shape due to the arrangement of the through holes.

Furthermore, a limiting block protruding out of the through hole is arranged in the primary vibration isolation colloid.

Furthermore, the through holes are two pairs which are symmetrically arranged respectively, the limiting blocks in one pair of the through holes are arranged by pointing the inner pipe to the first-stage outer pipe, and the limiting blocks in the other pair of the through holes are arranged by pointing the inner pipe to the first-stage outer pipe.

Compared with the prior art, the utility model discloses following advantage has:

the two-stage vibration isolation motor suspension bushing can effectively reduce high-frequency dynamic stiffness and adjust the overall mode by simultaneously arranging the first-stage vibration isolation colloid and the second-stage vibration isolation colloid, and has better vibration isolation effect; in addition, the opening which penetrates through the secondary outer pipe and the secondary vibration isolation colloid along the radial direction of the bushing body is formed in the bushing body, so that the diameter of the bushing body can be reduced conveniently, the compression amount of the bushing body can be increased, the internal stress of a product is reduced, and the durability of the two-stage vibration isolation motor suspension bushing can be improved.

In addition, the through hole which is axially arranged in the primary vibration isolation colloid in a penetrating way is constructed, so that the elastic performance of the primary vibration isolation colloid can be improved, and the vibration isolation effect of the primary vibration isolation colloid can be improved. The limiting block protruding out of the through hole is arranged, and the radial limiting of the inner pipe can be achieved. And through setting up the stopper in a pair of through-holes by the directional one-level outer tube of inner tube, another stopper in to the through-hole is set up by the directional inner tube of one-level outer tube, not only can realize radial spacing to the inner tube, also can make one-level vibration isolation colloid have better vibration isolation effect simultaneously.

Furthermore, another object of the present invention is to provide a motor suspension, wherein the two-stage vibration isolation motor suspension bushing is installed in the motor suspension.

Motor suspension, through setting up as above two-stage vibration isolation motor suspension bush, can make it have better vibration isolation effect, also can prolong motor suspension's life simultaneously.

Additionally, the utility model discloses still relate to an electric automobile, electric automobile is last to be equipped with as above the motor suspension.

Electric automobile, through adopting as above motor suspension, be favorable to improving its NVH performance to can promote whole car quality.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a two-stage vibration isolation motor suspension bushing according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

description of reference numerals:

1. an inner tube; 2. a primary vibration isolation colloid; 201. a through hole; 202. a limiting block; 3. a primary outer tube; 4. a secondary vibration isolation colloid; 5. a secondary outer tube; 501. and (4) opening.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper" and "lower" are presented, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but they do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a two-stage vibration isolation motor suspension bushing, which comprises a bushing body, wherein the bushing body comprises an inner pipe, a one-stage vibration isolation colloid, a one-stage outer pipe, a two-stage vibration isolation colloid and a two-stage outer pipe which are sequentially and fixedly connected from inside to outside. Wherein, inner tube, one-level vibration isolation colloid, one-level outer tube, second grade vibration isolation colloid and second grade outer tube vulcanize respectively and link firmly to be equipped with the opening of following the axial through arrangement on the bush body, and the opening radially runs through second grade outer tube and the setting of second grade vibration isolation colloid along the bush body.

According to the two-stage vibration isolation motor suspension bushing, the primary vibration isolation colloid and the secondary vibration isolation colloid are arranged at the same time, so that the high-frequency dynamic stiffness can be effectively reduced, the overall mode can be adjusted, and a better vibration isolation effect can be achieved; in addition, the opening which penetrates through the secondary outer pipe and the secondary vibration isolation colloid along the radial direction of the bushing body is formed in the bushing body, so that the diameter of the bushing body can be reduced conveniently, the compression amount of the bushing body can be increased, the internal stress of a product is reduced, and the durability of the two-stage vibration isolation motor suspension bushing can be improved.

Based on the above overall structure, an exemplary structure of the two-stage vibration isolation motor suspension bushing of the present embodiment is shown in fig. 1 and 2, wherein the inner tube 1, the first-stage outer tube 3, and the second-stage outer tube 5 are all round tubes, two ends of the inner tube 1 respectively protrude from the first-stage outer tube 3 and the second-stage outer tube 5, and the mounting hole of the inner tube 1 itself is configured as a strip hole, so as to facilitate the mounting of the present suspension bushing.

In addition, in order to improve the vibration damping effect of the primary vibration damping rubber body 2, a through hole 201 is formed in the primary vibration damping rubber body 2 so as to axially penetrate therethrough. Further, as shown in fig. 1 and 2, the through holes 201 of the present embodiment are four arranged at intervals in the circumferential direction of the bushing body, and are two pairs symmetrically arranged, respectively, and the primary vibration isolating colloid 2 resembles a cross shape due to the arrangement of the through holes 201. It should be noted that, instead of four through holes 201 arranged circumferentially, the number of through holes may be two, three, or the like, so that the primary vibration-isolating rubber body 2 is in a straight line shape or a herringbone shape. Of course, for convenience of manufacturing, the primary vibration isolating colloid 2 may be made of a solid structure without providing the through hole 201.

In this embodiment, in order to improve the use effect, a limiting block 202 protruding into the through hole 201 is disposed in the primary vibration isolation colloid 2, so as to limit the radial movement of the inner tube 1. As shown in fig. 1 and 2, in order to facilitate the arrangement of the limiting blocks 202, so that the limiting blocks have a better limiting effect, the limiting blocks 202 in one pair of through holes 201 are arranged from the inner tube 1 to the first-stage outer tube 3, and the limiting blocks 202 in the other pair of through holes 201 are arranged from the first-stage outer tube 3 to the inner tube 1.

Still as shown in fig. 1 and 2, the secondary vibration isolating colloid 4 of the present embodiment is cylindrical and has a solid structure, wherein the solid structure means that no other hole is formed on the secondary vibration isolating colloid 4 except for a connecting hole formed in the middle portion to connect with the primary outer tube 3. In addition, in order to effectively reduce the high-frequency dynamic stiffness of the two-stage vibration isolation motor suspension bushing, the rubber material of the second-stage vibration isolation colloid 4 is different from that of the first-stage vibration isolation colloid 2. Of course, both can be made of the same rubber compound for the convenience of processing and manufacturing.

As shown in fig. 2, the width k of the opening 501 penetrating the secondary outer tube 5 and the secondary vibration isolating colloid 4 in the radial direction of the bushing body is preferably not less than 2mm, such as 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, etc., and the width k of the opening 501 is not too large, and it is of course possible to adopt values less than 2mm, such as 1.8mm, 1.5mm, 1mm, 0.5mm, etc., depending on the specific press-fitting requirement.

The two-stage vibration isolation motor suspension bushing has two-stage vibration isolation characteristics, can effectively reduce high-frequency dynamic stiffness, and has a good vibration isolation effect; meanwhile, the arrangement of the opening 501 can increase the compression amount of the bushing body and reduce the internal stress of the product, so that the two-stage vibration isolation motor suspension bushing has better durability.

In addition, the embodiment also relates to a motor suspension, and the motor suspension is internally provided with the two-stage vibration isolation motor suspension bushing.

The motor suspension of this embodiment, through setting up two-stage vibration isolation motor suspension bush as above, can make it have better vibration isolation effect, also can prolong motor suspension's life simultaneously.

In addition, this embodiment still relates to an electric automobile, is equipped with the motor suspension as above on this electric automobile.

The electric automobile of this embodiment through adopting as above motor suspension, is favorable to improving its NVH performance to can promote whole car quality.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two-stage vibration isolation motor suspension bush, includes the bush body, its characterized in that: the bushing body comprises an inner tube (1), a first-level vibration isolation colloid (2), a first-level outer tube (3), a second-level vibration isolation colloid (4) and a second-level outer tube (5), wherein the inner tube (1), the first-level vibration isolation colloid (2), the first-level outer tube (3), the second-level vibration isolation colloid (4) and the second-level outer tube (5) are vulcanized and fixedly connected respectively, an opening (501) is formed in the bushing body in an axial direction and penetrates through the bushing body, and the opening (501) is formed in the bushing body in a radial direction and penetrates through the second-level outer tube (5) and the second-level vibration isolation colloid (4).

2. The two-stage vibration isolation motor suspension bushing of claim 1, wherein: the width k of the opening (501) is not less than 2 mm.

3. The two-stage vibration isolation motor suspension bushing of claim 1, wherein: the primary vibration isolation colloid (2) and the secondary vibration isolation colloid (4) are different in rubber material.

4. The two-stage vibration isolation motor suspension bushing of claim 1, wherein: the primary vibration isolation colloid (2) and/or the secondary vibration isolation colloid (4) are solid structures.

5. The two-stage vibration isolation motor suspension bushing of claim 1, wherein: and a through hole (201) axially penetrating is formed in the primary vibration isolation colloid (2).

6. The two-stage vibration isolation motor suspension bushing of claim 5, wherein: the through holes (201) are arranged along the circumferential direction of the bushing body at intervals, and the primary vibration isolation colloid (2) is similar to a cross shape, a herringbone shape or a straight shape due to the arrangement of the through holes (201).

7. The two-stage vibration isolation motor suspension bushing of claim 6, wherein: and a limiting block (202) protruding out of the through hole (201) is arranged in the primary vibration isolation colloid (2).

8. The two-stage vibration isolation motor suspension bushing of claim 7, wherein: the through holes (201) are two pairs which are symmetrically arranged respectively, the limiting blocks (202) in one pair of the through holes (201) are arranged by the inner pipe (1) pointing to the first-stage outer pipe (3), and the limiting blocks (202) in the other pair of the through holes (201) are arranged by the first-stage outer pipe (3) pointing to the inner pipe (1).

9. A motor suspension characterized in that: the motor suspension is internally pressed with a two-stage vibration isolation motor suspension bushing according to any one of claims 1 to 8.

10. An electric vehicle, characterized in that: the electric vehicle is provided with the motor suspension of claim 9.