CN211223005U

CN211223005U - Motor suspension and suspension structure thereof

Info

Publication number: CN211223005U
Application number: CN201922172019.5U
Authority: CN
Inventors: 焦黎明; 钟海兵; 郭春杰
Original assignee: Bogo Rubber Plastic Zhuzhou Co ltd
Current assignee: Bogo Rubber Plastic Zhuzhou Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-08-11
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a motor suspension and suspension structure thereof, including the core cover, last cushion and lower cushion by elastic material takes shape, it all is provided with the centre bore that is used for the group to connect to go up cushion and lower cushion, the core cover sets up in the centre bore, the cushion is including integrative shaping lower cushion first structure body and lower cushion second structure body down, lower cushion first structure body sets up under between cushion second structure body and the last cushion, the external diameter of lower cushion first structure body is less than the external diameter of lower cushion second structure body and last cushion, circumference is provided with a bush on the lower cushion first structure body. The utility model discloses an increased a bush in cushion structure down, increased the axial intensity of cushion down. And the arrangement of the bushing enables the elastic body to be stressed uniformly, the condition that the original structure is damaged due to stress concentration is avoided, and the service life of the product is greatly prolonged. The upper cushion block and the lower cushion block can be made of elastic materials with lower hardness, so that the rigidity of the product is reduced, and the vibration isolation effect and the operation smoothness of the product are ensured.

Description

Motor suspension and suspension structure thereof

Technical Field

The utility model belongs to the technical field of motor drive, specifically be a motor suspension and suspended structure thereof.

Background

Motor suspensions are an important component of motor-driven vehicles, in which a motor is mounted on a motor mounting intermediate plate, and the motor mounting intermediate plate is mounted on the vehicle through a bolt assembly, wherein, in order to cushion vibration, a rubber pad is generally disposed between the bolt assembly and the motor mounting intermediate plate, so as to cushion lateral displacement impact and longitudinal displacement impact of the motor mounting intermediate plate. However, the middle plate for mounting the motor has shearing action on the rubber cushion block, so that the rubber cushion block is easy to crack and damage, and the service life is short.

At present, in order to prolong the service life of a motor suspension, a method for improving the hardness of a rubber block is generally adopted, such as changing the formula and the process of rubber materials, so as to increase the strength and the wear resistance of the rubber block. However, although the problem of short service life is solved, the rigidity of the product is improved, and the vibration isolation effect of the product is reduced during operation, so that the riding comfort and the operation smoothness are affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor suspension and suspension structure thereof to solve above-mentioned problem.

In order to achieve the above object, the utility model discloses a motor suspension at first, including the core box, by last cushion and the lower cushion that elastic material takes shape, go up the cushion and all be provided with the centre bore that is used for the group to connect down the cushion, the core box sets up in the centre bore, the cushion is including integrative first structure body of lower cushion and the lower cushion second structure body that takes shape down, the first structure body of lower cushion set up in down between cushion second structure body and the last cushion, the external diameter of the first structure body of lower cushion is less than the external diameter of lower cushion second structure body and last cushion, circumference is provided with a bush on the first structure body of lower cushion.

Further, a step is formed between the lower cushion block first structure body and the lower cushion block second structure body, the bushing comprises a lower cushion block first structure body bushing covering the outer wall of the lower cushion block first structure body and a step bushing covering the step, and the lower cushion block first structure body bushing and the step bushing are integrally formed.

Further, the bush is integrally formed with a second lower pad structure bush extending to a lower side of the second lower pad structure, and the second lower pad structure bush covers at least a part of an outer wall of the second lower pad structure.

Furthermore, the bushing is embedded in the lower cushion block and is arranged close to the outer wall of the lower cushion block.

Further, the axial length of the first lower cushion block structure body is smaller than or equal to the thickness of a motor mounting plate mounted on the first lower cushion block structure body.

Further, the minimum outer diameter of the bushing is smaller than or equal to the diameter of the mounting hole of the motor mounting plate.

Further, the outer wall of the core sleeve is any one of circular, polygonal, oval and irregular.

Further, the length of the core sleeve is smaller than the sum of the axial lengths of the upper cushion block and the lower cushion block.

Then the utility model discloses a motor suspension structure, including above-mentioned scheme the motor suspension still include bolt assembly and motor mounting panel, go up cushion and lower cushion through running through its centre bore bolt assembly connects, the first structure body of lower cushion is installed in the mounting hole of motor mounting panel.

Further, backing plates are arranged between the upper cushion block and the bolt assembly and between the lower cushion block and the bolt assembly.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a motor suspension has increased a bush in the cushion structure down, has increased the axial intensity of lower cushion. And the arrangement of the bushing enables the elastic body to be stressed uniformly, the condition that the original structure is damaged due to stress concentration is avoided, and the service life of the product is greatly prolonged. Furthermore, the upper cushion block and the lower cushion block can be made of elastic materials with lower hardness, so that the rigidity of the product is reduced, and the vibration isolation effect and the operation smoothness of the product are ensured.

2. The utility model discloses a motor suspension can adopt the core cover to connect for dismantling, in order to avoid the motor suspension use, because of the too big bonding that causes of displacement between elastomer and dabber destroys, makes the elastomer tear, has further improved the fail safe nature of product.

3. The utility model discloses a motor suspension is owing to cover the step bush of step, the edge of having avoided the mounting hole of motor mounting panel is direct and lower bolster direct contact, causes destruction to the elastomer, and simultaneously, the notch cuttype structure can further inject the motor suspension axial displacement distance in the use, protects the motor more accurately.

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

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

fig. 1 is a schematic structural diagram of a motor suspension according to an embodiment of the present invention;

fig. 2 is a schematic view of a motor suspension structure with a motor suspension installed according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a motor suspension disclosed in the second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a motor suspension according to a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of a motor suspension according to a fourth embodiment of the present invention;

fig. 6 is a schematic structural diagram of an upper cushion block and a lower cushion block of a motor suspension according to a fourth embodiment of the present invention;

fig. 7 is a schematic structural diagram of a core sleeve for suspending a motor according to an embodiment of the present invention;

fig. 8 is a schematic top view of a core sleeve for suspending a motor according to an embodiment of the present invention.

Illustration of the drawings:

10. an upper cushion block; 20. a lower cushion block; 201. a core sleeve; 202. a bushing; 203. a lower cushion block second structure; 204. a lower pad first structure body; 205. a step; 206. a lower pad first structure body bushing; 207. a step bushing; 208. a lower pad second structure bushing; 30. a motor mounting plate; 301. mounting holes; 40. a base plate; 50. a bolt; 60. and a nut.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

The first embodiment is as follows:

as shown in fig. 1, the utility model discloses a motor suspension, including the motor mounting panel 30 that is used for installing the motor, last cushion 10 and lower cushion 20 by elastic material takes shape, it all is provided with the centre bore that is used for the group to connect to go up cushion 10 and lower cushion 20, lower cushion 20 includes integrative lower cushion first structure body 204 and lower cushion second structure body 203 that takes shape, lower cushion first structure body 204 sets up between lower cushion second structure body 203 and last cushion 10, the external diameter of lower cushion first structure body 204 is less than the external diameter of lower cushion second structure body 203 and last cushion 10, a bush 202 has cup jointed on the lower cushion first structure body 204, the higher material of hardness such as metal or polymer composite is selected for use to bush 202. The bushing 202 is located in the mounting hole 301 of the motor mounting plate 30, an annular groove structure is formed between the upper cushion block 10 and the lower cushion block first structure body 204, and the mounting hole 301 of the motor mounting plate 30 is clamped in the annular groove, i.e. sleeved outside the lower cushion block first structure body 204. Specifically, a step 205 is formed between the lower block first structure body 204 and the lower block second structure body 203, the bushing 202 includes a lower block first structure body bushing 206 covering an outer wall of the lower block first structure body 204 and a step bushing 207 covering the step 205, and the lower block first structure body bushing 206 and the step bushing 207 are integrally formed. Therefore, during the movement, the edge of the mounting hole 301 of the motor mounting plate 30 is not in direct contact with the lower pad 20, but is in direct contact with the bushing 202, thereby protecting the lower pad 20.

In this embodiment, as shown in fig. 2, the motor suspension structure with the motor suspension further includes a bolt assembly, a pad 40 and a motor mounting plate 30, the pair of the upper pad 10 and the lower pad 20 is connected by the bolt assembly penetrating through the central hole thereof, the bolt assembly includes a bolt 50 and a nut 60, the pad 40 is disposed between the bolt head of the bolt 50 and the upper pad 10, between the nut 60 and the lower pad 20, and the pad 40 can be integrally formed with the upper pad 10 and the lower pad 20, and as a part of the product itself, the motor suspension structure is not limited to split mounting. Thereby uniformly applying the force of the axial movement of the motor mounting plate 30 to the backing plate 40 and avoiding stress concentration on the upper end surface of the upper cushion block 10 and the lower end surface of the lower cushion block 20. Meanwhile, in this embodiment, the core sleeve 201 is disposed in the central hole of each of the upper pad 10 and the lower pad 20, and the core sleeve 201 is attached to the inner wall of the central hole of each of the upper pad 10 and the lower pad 20, so that the pressure generated when the motor mounting plate 30 moves laterally can be uniformly applied to the core sleeve 201.

In this embodiment, for better mounting and assembly, the axial length C of the lower pad first structure body 204 is less than the thickness a of the motor mounting plate 30, and the minimum outer diameter G1 of the bushing 202 is less than or equal to the diameter F of the mounting hole 301 of the motor mounting plate 30. And the length E of the core sleeve 201 is smaller than the sum of the axial lengths of the upper and

lower blocks

10 and 20, i.e., the sum of the thickness B of the upper block 10, the thickness D of the lower block 20, and the thickness a of the motor mounting plate 30.

In this embodiment, referring to fig. 7 and 8, the outer wall of the core sleeve 201 may be any one of circular, polygonal, elliptical and irregular shapes, and is specifically configured according to actual stress conditions.

Example two:

as shown in fig. 3, the motor suspension in this embodiment is substantially the same as the first embodiment, except that: in this embodiment, the bushing 202 is further integrally formed with a lower pad second structure bushing 208 extending to the lower side of the lower pad second structure 203, and the lower pad second structure bushing 208 covers at least a part of the outer wall of the lower pad second structure 203. Therefore, in the using process, the step-shaped structure can further limit the axial displacement distance of the motor suspension in the using process of the motor mounting plate 30, and the motor is protected more accurately.

Example three:

as shown in FIG. 4, in this embodiment, the bushing 202 is embedded within the lower pod 20, and the bushing 202 is disposed adjacent to the outer wall of the lower pod 20. In this structure, the lower pad 20 and the mounting hole 301 of the motor mounting plate 30 are in interference fit, and at this time, the minimum outer diameter G2 of the bushing 202 is smaller than the diameter F of the mounting hole 301. The bushing 202 is disposed inside the lower block 20, and this structural arrangement prevents the bushing 202 from directly contacting the motor mounting plate 30. The strength of the motor suspension is increased, and abnormal noise generated by contact between the bushing 202 and the motor mounting plate 30 is reduced.

Example four:

as shown in fig. 5 and 6, the motor suspension in this embodiment is substantially the same as the third embodiment, and is embedded in a bushing 202, which is different in that: in this embodiment, the bushing 202 is further integrally formed with a lower spacer second structure bushing 208 extending to the lower side of the lower spacer second structure 203, so that the stepped structure can further limit the axial displacement distance of the motor suspension in the motor mounting plate 30 during use, and the motor can be protected more precisely.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement 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 motor suspension, its characterized in that, includes core box (201), last cushion (10) and lower cushion (20) by elastic material takes shape, go up cushion (10) and lower cushion (20) and all be provided with the centre bore that is used for the group to connect, core box (201) sets up in the centre bore, lower cushion (20) are including integrative lower cushion first structure body (204) and lower cushion second structure body (203) that forms, lower cushion first structure body (204) set up in between lower cushion second structure body (203) and last cushion (10), the external diameter of lower cushion first structure body (204) is less than the external diameter of lower cushion second structure body (203) and last cushion (10), circumference is provided with a bush (202) on lower first structure body (204).

2. The motor suspension of claim 1, wherein the lower block first structure (204) and the lower block second structure (203) form a step (205) therebetween, and the bushing (202) comprises a lower block first structure bushing (206) covering an outer wall of the lower block first structure (204) and a step bushing (207) covering the step (205), wherein the lower block first structure bushing (206) and the step bushing (207) are integrally formed.

3. The motor suspension of claim 2 wherein the bushing (202) further integrally forms a second lower spacer structure bushing (208) extending toward the underside of the second lower spacer structure (203), the second lower spacer structure bushing (208) covering at least a portion of the outer wall of the second lower spacer structure (203).

4. The motor suspension according to any of the claims 1-3, characterized in that the bushing (202) is embedded in the lower spacer (20) and that the bushing (202) is arranged close to the outer wall of the lower spacer (20).

5. The motor suspension of any of claims 1-3, wherein the axial length of the lower cushion block first structure (204) is less than or equal to the thickness of the motor mounting plate (30) mounted on the lower cushion block first structure (204).

6. The motor suspension according to claim 5, characterized in that the smallest outer diameter of the bushing (202) is smaller than or equal to the diameter of the mounting hole (301) of the motor mounting plate (30).

7. The motor suspension according to any of the claims 1-3, characterized in that the outer wall of the core housing (201) is any one of circular, polygonal, oval and profiled.

8. The motor suspension according to any of claims 1-3, characterized in that the length of the core housing (201) is smaller than the sum of the axial lengths of the upper and lower spacers (10, 20).

9. A motor suspension structure, comprising the motor suspension of any one of claims 1 to 8, and further comprising a bolt assembly and a motor mounting plate (30), wherein the upper pad (10) and the lower pad (20) are connected by the bolt assembly penetrating through a central hole thereof, and the lower pad first structure body (204) is mounted in a mounting hole (301) of the motor mounting plate (30).

10. The motor suspension structure according to claim 9, wherein a shim plate (40) is arranged between the upper shim block (10) and the bolt assembly and between the lower shim block (20) and the bolt assembly.