CN217532529U - Vibration isolation device, suspension system and vehicle - Google Patents

Abstract

The application discloses vibration isolation device, suspension system and vehicle belongs to vehicle damping technical field. The vibration isolation device comprises a support, a first bushing and a second bushing, the support is provided with a first connecting hole and a second connecting hole, the first bushing is arranged in the first connecting hole and is used for connecting an electric drive assembly, the second bushing is arranged in the second connecting hole and is used for connecting an auxiliary frame, the vibration isolation device further comprises a first limiting structure and a second limiting structure, the first limiting structure and the second limiting structure are respectively positioned on two sides of the support along the axial direction of the first connecting hole and are both connected with the first bushing, and the first limiting structure and the second limiting structure are respectively in axial limiting contact with the support in the first connecting hole. Above-mentioned technical scheme can solve the problem that relative displacement easily takes place between little bush and the support in the correlation technique, and little bush is difficult for breaking away from the connecting hole, avoids support and electricity to drive the assembly to bump the production abnormal sound simultaneously.

Description

Vibration isolation device, suspension system and vehicle

Technical Field

The application belongs to the technical field of vehicle vibration reduction, and particularly relates to a vibration isolation device, a suspension system and a vehicle.

Background

Vehicles are often equipped with suspension systems whose vibration isolation properties largely determine the performance of the vehicle. For the vibration isolation performance that improves suspension system, the vehicle that the correlation technique relates to discloses a second grade vibration isolation system, and this second grade vibration isolation system includes support, a plurality of little bushes and big bush, is equipped with a plurality of connecting holes on the support, and each little bush sets up in the connecting hole of difference through embedded mode respectively with big bush, and each little bush is connected with the electricity respectively and drives the assembly, and big bush is connected with sub vehicle frame. Therefore, the electric drive assembly and the support are isolated through the small bushing, the support and the auxiliary frame are isolated through the large bushing, the structure can be expanded into two-degree-of-freedom vibration isolation through single-degree-of-freedom vibration isolation, the range of effective vibration isolation frequency can be expanded, and the vibration isolation performance is finally improved.

Because the electricity drives the assembly and is located the one end of little bush, consequently under extreme condition, relative displacement takes place easily between little bush and the support, and then makes little bush break away from the connecting hole more easily, and the support also bumps with the electricity drives the assembly more easily simultaneously and produces the abnormal sound.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide an isolation mounting, a suspension system and a vehicle, and can solve the problems that in the related art, relative displacement is easy to occur between a small bushing and a support, the small bushing is easy to separate from a connecting hole, and meanwhile the support is easy to collide with an electric drive assembly to generate abnormal sound.

In a first aspect, an embodiment of the present application provides a vibration isolation device, including a bracket, a first bushing, and a second bushing, wherein:

the bracket is provided with a first connecting hole and a second connecting hole, the first bushing is arranged in the first connecting hole and used for connecting an electric drive assembly, and the second bushing is arranged in the second connecting hole and used for connecting an auxiliary frame;

the vibration isolation device further comprises a first limiting structure and a second limiting structure, wherein the first limiting structure and the second limiting structure are respectively located on two sides of the support and are connected with the first bushing along the axial direction of the first connecting hole, and the first limiting structure and the second limiting structure are respectively in axial limiting contact with the support in the first connecting hole.

In a second aspect, the present application provides a suspension system, including sub-frame, electric drive assembly and foretell vibration isolation device, follow the axial of first connecting hole, the electric drive assembly is located the lateral part of support, first bush with the electric drive assembly is connected, the second bush with the sub-frame is connected.

In a third aspect, the embodiment of the present application further provides a vehicle including the suspension system described above.

In the embodiment of the application, the first bushing is limited through the first limiting structure and the second limiting structure, so that relative displacement between the first bushing and the bracket is avoided, the first bushing cannot be separated from the first connecting hole, and the fatigue resistance of the first bushing can be improved; in addition, because first bush and electricity drive assembly relatively fixed, further avoid support and electricity to drive the assembly and take place relative displacement, the support also can not bump and produce the abnormal sound with electricity drive assembly.

Drawings

Fig. 1 is a schematic structural view of a vibration isolation device disclosed in an embodiment of the present application;

fig. 2 is an exploded schematic view of a vibration isolation device disclosed in an embodiment of the present application;

FIG. 3 is an exploded schematic view of a first bushing disclosed in an embodiment of the present application;

FIG. 4 is an exploded schematic view of a second bushing disclosed in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a suspension system disclosed in an embodiment of the present application.

Description of reference numerals:

100-a scaffold; 110-a first connection hole; 120-a second connection hole;

200-a first bushing; 210-a first inner core; 211-grooves; 212-first shaft hole; 220-a first vibration dampening portion; 221-cylindrical portion; 222-a peripheral portion; 230-a first outer tube; 231-an annular flange;

300-a second bushing; 310-a second inner core; 311-second shaft hole; 320-a second vibration dampening portion; 330-a second outer tube;

400-a limiting plate; 410-a second protrusion; 420-opening the hole;

500-a first fastener;

600-an electric drive assembly;

700-a subframe;

800-second fastener.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived from the embodiments in the present application by a person skilled in the art, are within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The vibration isolation device, the suspension system and the vehicle provided by the embodiment of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1-5, the vibration isolation device disclosed in the embodiments of the present application includes a bracket 100, a first bushing 200, and a second bushing 300, and the vibration isolation device is used as a part of a suspension system, and is mainly used for supporting an electric drive assembly 600 and performing vibration isolation. In which the bracket 100 is provided between the electric drive assembly 600 and the sub frame 700 as a support member for mounting the first bushing 200 and the second bushing 300.

Specifically, the bracket 100 is provided with a first connection hole 110 and a second connection hole 120, the first bushing 200 is disposed in the first connection hole 110, and the first bushing 200 is used for connecting the electric drive assembly 600, specifically, the first bushing 200 is disposed in the first connection hole 110 in an embedded manner, an outer wall surface of the first bushing 200 is matched with a wall surface of the first connection hole 110, and a welding and bonding connection manner may be adopted between the electric drive assembly 600 and the first bushing 200, but of course, other connection manners may also be adopted. The second bushing 300 is disposed in the second connection hole 120, and the second bushing 300 is used for connecting the subframe 700, specifically, the second bushing 300 is also disposed in the second connection hole 120 in an embedded manner, an outer wall surface of the second bushing 300 is matched with a wall surface of the second connection hole 120, and a welding or bonding connection manner may be adopted between the subframe 700 and the second bushing 300, but of course, other connection manners may also be adopted.

Therefore, the electric drive assembly 600 and the support 100 are isolated in vibration through the first bushing 200, the support 100 and the subframe 700 are isolated in vibration through the second bushing 300, the structure can be expanded into two-degree-of-freedom vibration isolation through single-degree-of-freedom vibration isolation, the range of effective vibration isolation frequency can be expanded, and finally the vibration isolation performance is improved.

In the present embodiment, the size of the second bushing 300 is larger than that of the first bushing 200, and the number of the first bushings 200 is plural. As shown in fig. 1 and 2, the number of the first bushings 200 is three, and three first bushings 200 are arranged in a curve.

The vibration isolation device further comprises a first limiting structure and a second limiting structure, wherein the first limiting structure and the second limiting structure are respectively located on two sides of the support 100 and are connected with the first bushing 200 along the axial direction of the first connecting hole 110, and the first limiting structure and the second limiting structure are respectively in axial limiting contact with the support 100 in the first connecting hole 110. In this embodiment, the number of the first limiting structures and the number of the second limiting structures are respectively the same as the number of the first bushings 200, that is, the first limiting structures and the second limiting structures are respectively disposed on two sides of each first bushing 200.

Therefore, the first limiting structure and the second limiting structure are in limiting contact with the support 100 respectively, so that the first limiting structure and the second limiting structure are fixed relative to the support 100, and the first limiting structure and the second limiting structure are fixed relative to the first bushing 200, so that the first bushing 200 is fixed relative to the support 100, and the first bushing and the support cannot generate relative displacement.

Specifically, at least one of the first and second limit structures may be provided at a side portion of the first bushing 200, and may be a part of the structure of the first bushing 200 itself; the first and second limiting structures may also be separate limiting members, and the limiting members are fixedly connected with the first bushing 200 and in limiting contact with the bracket 100.

With the arrangement, the first bushing 200 is limited by the first limiting structure and the second limiting structure, so that relative displacement between the first bushing 200 and the bracket 100 is avoided, the first bushing 200 cannot be separated from the first connecting hole 110, and the fatigue resistance of the first bushing 200 can be improved; in addition, because the first bushing 200 is fixed relative to the electric drive assembly 600, the bracket 100 and the electric drive assembly 600 are further prevented from relative displacement, and the bracket 100 does not collide with the electric drive assembly 600 to generate abnormal sound.

Optionally, as shown in fig. 3, the first bushing 200 includes a first inner core 210, a first vibration reduction portion 220, and a first outer tube 230, the first outer tube 230 is sleeved on the outer periphery of the first inner core 210, the first vibration reduction portion 220 is located between the first inner core 210 and the first outer tube 230, specifically, an annular space is provided between the first outer tube 230 and the first inner core 210, and the first vibration reduction portion 220 is also in an annular structure and is disposed in the annular space. The first limiting structure is a first protrusion disposed at an end of the first outer tube 230, and the first protrusion protrudes from an outer wall surface of the first outer tube 230. In this embodiment, the electric drive assembly 600 is located on a side portion of the bracket 100, the first protrusion is disposed at an end portion of the first outer tube 230 close to the electric drive assembly 600, the bracket 100 has a first side surface and a second side surface that are opposite to each other, the first side surface faces the electric drive assembly 600, a surface of the first protrusion facing the bracket 100 is in limited contact with the first side surface of the bracket 100, and optionally, both the first side surface and the second side surface may be perpendicular to an axial direction of the first connection hole 110. Of course, in other embodiments, the first protrusion may be disposed on the end of first outer tube 230 distal from electric drive assembly 600.

Alternatively, the first protrusions may be protrusions, and the number of the protrusions may be one or more, and in the case that the number of the protrusions is plural, the protrusions are distributed along the circumferential direction of the first outer tube 230, and each protrusion is in contact with the stent 100; of course, the projection may be an annular projection or other structures.

So set up, refine the structure of first bush 200, play the damping effect through first damping portion 220 to through first arch, realize first bush 200 and support 100 in the spacing contact of the axis direction of first connecting hole 110, realize spacing to first bush 200.

In this embodiment, the first protrusion is an annular flange 231, and the annular flange 231 and the first outer tube 230 may be an integral structure, that is, the annular flange 231 is also made of metal. In this way, any position of the annular flange 231 along the circumferential direction of the first outer tube 230 is in limit contact with the bracket 100, and the first bushing 200 is limited to a large extent; further, the joint between the annular flange 231 and the first outer tube 230 is integrated, thereby increasing the strength.

In this embodiment, the first inner core 210 and the first outer tube 230 are made of metal, the first vibration damping portion 220 is made of rubber, and the rubber may be integrally formed with the first inner core 210 and the first outer tube 230 by vulcanization. Specifically, the first inner core 210 and the first outer tube 230 may be made of aluminum, and the first vibration damping portion 220 may be made of other materials capable of exerting a vibration damping effect.

Alternatively, as shown in fig. 3, the first vibration damping portion 220 includes a cylindrical portion 221 and an outer edge portion 222, the cylindrical portion 221 is disposed between the first inner core 210 and the first outer tube 230, the outer edge portion 222 is disposed at an end of the cylindrical portion 221, the outer edge portion 222 protrudes out of an outer wall surface of the cylindrical portion 221, and the outer edge portion 222 is located on a side of the first protrusion facing away from the bracket 100, that is, a side facing the electric drive assembly 600. The outer edge portion 222 may be a block, a ring, or other structure. Specifically, the outer edge portion 222 may be in contact with the first protrusion, and the outer edge portion 222 may not be in contact with the first protrusion, in this embodiment, the outer edge portion 222 is provided by being attached to the first protrusion, and the cylindrical portion 221 and the outer edge portion 222 are made of rubber, and the outer edge portion 222 may be provided on the surface of the first protrusion by vulcanization.

So set up, through outer edge portion 222, separate first arch and electricity drive assembly 600, because first bellied material adopts the metal material to avoid first arch and electricity to drive assembly 600 contact or collision and produce the abnormal sound.

Alternatively, the second limit structure is a limit plate 400, and the limit plate 400 is detachably coupled to the end of the first bushing 200. Specifically, the limiting plate 400 may be detachably connected to the first bushing 200 by means of a bolt, a snap, or the like, but other connection methods may also be used. In the present embodiment, the limiting plate 400 is disposed at an end of the first bushing 200 away from the electric drive assembly 600, and a side of the limiting plate 400 facing the first bushing 200 is in limiting contact with a second side of the bracket 100. Of course, in other embodiments, the limiting plate 400 may be disposed at an end of the first bushing 200 near the electric drive assembly 600.

That is, the end of the first bushing 200 that is closer to the electric drive assembly 600 is retained by the annular flange 231, and the end of the first bushing 200 that is farther from the electric drive assembly 600 is retained by the retaining plate 400. Also, the limiting plate 400 can be installed and disassembled, thereby facilitating the installation and disassembly of the first bushing 200.

Specifically, as shown in fig. 1, the first bushing 200 is provided with a first shaft hole 212, the first shaft hole 212 is coaxial with the first connection hole 110, and the limiting plate 400 is provided with an opening 420. When the limit plate 400 is installed, the first bushing 200 is firstly extended into the first connection hole 110 from the side of the bracket 100 facing the electric drive assembly 600, then the limit plate 400 is limited at the side of the first bushing 200 facing away from the electric drive assembly 600, the limit plate 400 sequentially penetrates through the opening 420 and the first axial hole 212 through the first fastener 500 and is screwed into the electric drive assembly 600, so that the fixed connection between the limit plate 400, the first bushing 200 and the electric drive assembly 600 is realized, and the limit plate 400 and the first bushing 200 are fixed relative to the bracket 100 because the limit plate 400 and the first protrusion are matched with each other to clamp the bracket 100 in the screwing process, so that the connection between the limit plate 400, the first bushing 200, the bracket 100 and the electric drive assembly 600 is finally realized. When the limiting plate 400 needs to be disassembled, the first fastener 500 is directly unscrewed, and the limiting plate 400 can be separated from the bracket 100 and the first bushing 200. In this embodiment, the first inner core 210 defines a first shaft hole 212, and the first fastener 500 may be a bolt.

In a further technical solution, as shown in fig. 2, a second protrusion 410 is provided on a surface of the limiting plate 400, specifically, when the limiting plate 400 is in an installation state, the second protrusion 410 protrudes from a side surface of the limiting plate 400 facing the first bushing 200. The end of the first bushing 200 is provided with a groove 211, the second protrusion 410 can extend into the groove 211, and the second protrusion 410 is matched with the groove 211, that is, the shape and size of the second protrusion 410 and the groove 211 are the same. Specifically, the second protrusion 410 is disposed at an edge of the opening 420, the groove 211 is disposed at an end of the first inner core 210 away from the electric drive assembly 600, the groove 211 is communicated with the first axial hole 212, the shape of the groove 211 may be a rectangular structure, a trapezoidal structure, or other irregular structures, and the shape of the groove 211 is not limited.

When the limiting plate 400 is installed, the limiting plate 400 is gradually close to the first bushing 200, in the process, the second protrusion 410 is aligned to the groove 211 and extends into the groove 211 until the limiting plate 400 contacts the bracket 100, it is described that the second protrusion 410 is completely matched with the groove 211, the position of the limiting plate 400 relative to the bracket 100 is determined, the opening 420 is correspondingly communicated with the first shaft hole 212, the first fastener 500 is directly utilized to sequentially penetrate through the opening 420 and the first shaft hole 212 and is screwed in the electric drive assembly 600, and the limiting plate 400 can be fixed.

So set up, through second arch 410 and recess 211, conveniently confirm the position of limiting plate 400 for first bush 200, supplementary installation limiting plate 400, simultaneously, avoid taking place the skew at the relative support 100's of the in-process limiting plate 400 of screwing of first fastener 500 position for it is more convenient to assemble between first bush 200 and the limiting plate 400.

Alternatively, as shown in fig. 4, the second liner 300 includes a second inner core 310, a second vibration reduction part 320, and a second outer tube 330, the second outer tube 330 is fitted around the second inner core 310, and the second vibration reduction part 320 is disposed between the second inner core 310 and the second outer tube 330. Similarly, an annular space is provided between the second inner core 310 and the second outer tube 330, and the second vibration reduction part 320 has an annular structure and is disposed in the annular space.

In this embodiment, the second inner core 310 and the second outer tube 330 are made of metal, the second vibration damping portion 320 is made of rubber, and the rubber is integrally formed with the second inner core 310 and the second outer tube 330 by vulcanization. The second inner core 310 and the second outer tube 330 may be made of aluminum, and the second vibration damping portion 320 may be made of other materials capable of achieving a vibration damping effect.

With this arrangement, the structure of the second bush 300 is made fine, and the second vibration reduction portion 320 performs a vibration reduction function.

As shown in fig. 5, the sub frame 700 is provided with a mounting groove for receiving the second bushing 300, and the second core 310 is provided with a second shaft hole 311. Specifically, the sub frame 700 is provided with two connection pieces, which constitute a mounting groove therebetween, and both of the two connection pieces are provided with mounting holes, sequentially penetrate through one of the mounting holes, the second shaft hole 311, and the other mounting hole through the second fastener 800, and are tightened by nuts, thereby achieving the fixed connection of the second bushing 300 and the sub frame 700. Wherein the second fastener 800 may be a bolt.

Based on the vibration isolation device disclosed in the present application, as shown in fig. 5, a suspension system is further disclosed in the present embodiment, and the disclosed suspension system includes a subframe 700, an electric drive assembly 600 and the vibration isolation device in the above embodiment, the electric drive assembly 600 is located at a side portion of the bracket 100 along an axial direction of the first connection hole 110, the first bushing 200 is connected to the electric drive assembly 600, and the second bushing 300 is connected to the subframe 700.

In this embodiment, the electric drive assembly 600 and the subframe 700 are coupled via a plurality of vibration isolation devices.

Based on the suspension system disclosed in the application, the embodiment of the application also discloses a vehicle, which comprises the suspension system in the embodiment.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A vibration isolation apparatus comprising a bracket (100), a first bushing (200), and a second bushing (300), wherein:

the support (100) is provided with a first connecting hole (110) and a second connecting hole (120), the first bushing (200) is arranged in the first connecting hole (110) and used for connecting an electric drive assembly (600), and the second bushing (300) is arranged in the second connecting hole (120) and used for connecting an auxiliary frame (700);

the vibration isolation device further comprises a first limiting structure and a second limiting structure, wherein the first limiting structure and the second limiting structure are respectively located on two sides of the support (100) and are connected with the first bushing (200) along the axial direction of the first connecting hole (110), and the first limiting structure and the second limiting structure are respectively in axial limiting contact with the support (100) in the first connecting hole (110).

2. The vibroisolating device according to claim 1, wherein, the first bushing (200) comprises a first inner core (210), a first vibration damping portion (220) and a first outer tube (230), the first outer tube (230) is sleeved on the outer periphery of the first inner core (210), the first vibration damping portion (220) is located between the first inner core (210) and the first outer tube (230), the first limiting structure is a first protrusion arranged at the end of the first outer tube (230), and the first protrusion protrudes from the outer wall surface of the first outer tube (230).

3. The vibration isolation device according to claim 2, wherein the first vibration damping portion (220) includes a cylindrical portion (221) and an outer edge portion (222), the cylindrical portion (221) is provided between the first inner core (210) and the first outer tube (230), the outer edge portion (222) is provided at an end of the cylindrical portion (221), and the outer edge portion (222) is located on a side of the first protrusion facing away from the bracket (100).

4. The vibroisolating device according to claim 2, characterized in that, said first protrusion is an annular flange (231).

5. The vibroisolating device according to claim 1, characterized in that, said second limit structure is a limit plate (400), said limit plate (400) being detachably connected to the end of said first bushing (200).

6. The vibroisolating device according to claim 5, characterized in that, said first bushing (200) is provided with a first axial hole (212), said first axial hole (212) being coaxial with said first connection hole (110), said limiting plate (400) being provided with an opening (420), said opening (420) and said first axial hole (212) being in turn crossed by a first fastening member (500) and screwed inside said electric actuation assembly (600).

7. The vibroisolating device according to claim 5, characterized in that, the surface of the limiting plate (400) is provided with a second protrusion (410), the end of the first bushing (200) is provided with a groove (211), the second protrusion (410) extends into the groove (211), and the second protrusion (410) is matched with the groove (211).

8. The vibration isolation apparatus according to claim 1, wherein the second bushing (300) comprises a second inner core (310), a second vibration reduction portion (320), and a second outer tube (330), the second outer tube (330) being fitted around the second inner core (310), the second vibration reduction portion (320) being provided between the second inner core (310) and the second outer tube (330).

9. A suspension system, characterized by comprising a sub-frame (700), an electric drive assembly (600) and a vibration isolation device, wherein the vibration isolation device is the vibration isolation device according to any one of claims 1 to 8, the electric drive assembly (600) is located on the side of the bracket (100) in the axial direction of the first connection hole (110), the first bushing (200) is connected to the electric drive assembly (600), and the second bushing (300) is connected to the sub-frame (700).

10. A vehicle comprising a suspension system, said suspension system being the suspension system of claim 9.

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