CN210733805U - Bushing, suspension and electric vehicle - Google Patents

Abstract

The utility model discloses a bush, suspension and have its electric vehicle, according to the utility model discloses the bush of first aspect embodiment includes: the upper bushing and the lower bushing are detachably and relatively attached to form a bushing body, the bushing body comprises a first accommodating space, and the first accommodating space extends outwards from the inner attaching position of the upper bushing and the lower bushing and penetrates through the outer side wall of one side of the bushing body. According to the bushing provided by the embodiment of the utility model, the bushing is constructed into a split structure, and the upper bushing and the lower bushing are respectively pressed on the vehicle body, so that the bushing has a simpler structure and better damping and torsion eliminating effects; and the assembly between the parts connected with the bush on the vehicle body and the bush is simpler, and the interference with other parts on the vehicle body can be avoided in the assembly process.

Description

Bushing, suspension and electric vehicle

Technical Field

The utility model belongs to the technical field of the electric vehicle technique and specifically relates to a bush, suspension and electric vehicle are related to.

Background

In the related art, in recent years, electric vehicles have been developed rapidly, and the market competition of electric vehicles is becoming intense, wherein one of the important competition indexes is the endurance mileage of the whole vehicle, and the light weight of the whole vehicle is one of the main measures for reducing the energy consumption of the whole vehicle and increasing the endurance mileage.

Furthermore, in order to reduce the weight of the whole vehicle, the auxiliary frame in the chassis suspension system is structurally improved. Therefore, the matching performance of the existing suspension part and the improved auxiliary frame is poor, the assembly between the existing suspension part and the improved auxiliary frame is difficult, and the performance requirement of a chassis suspension system is difficult to meet after the assembly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. For this reason, an object of the present invention is to provide a bush, which is more convenient to assemble and can prevent a part connected to the bush from interfering with surrounding parts.

The utility model discloses a suspension with above-mentioned bush is further proposed.

The utility model further provides an electric vehicle with above-mentioned sub vehicle frame.

According to the utility model discloses the bush of first aspect embodiment includes: the upper bushing and the lower bushing are detachably and relatively attached to form a bushing body, the bushing body comprises a first accommodating space, and the first accommodating space extends outwards from the inner attaching position of the upper bushing and the lower bushing and penetrates through the outer side wall of one side of the bushing body.

According to the bushing provided by the embodiment of the utility model, the bushing is constructed into a split structure, and the upper bushing and the lower bushing are respectively pressed on the vehicle body, so that the bushing has a simpler structure and better damping and torsion eliminating effects; and the assembly between the parts connected with the bush on the vehicle body and the bush is simpler, and the interference with other parts on the vehicle body can be avoided in the assembly process.

According to the utility model discloses a some embodiments, the binding face of going up the bush is formed with the last accommodation space that extends to the lateral wall and link up lower lateral wall from inside, the binding face of lower bush is formed with the lower accommodation space that extends to the lateral wall and link up the lateral wall from inside, down accommodation space with it prescribes a limit to go up accommodation space first accommodation space.

Further, the bushing body further includes a second accommodation space extending in an axial direction of the bushing body and penetrating the bushing body.

In some embodiments, the upper bushing and the lower bushing each comprise: the spring assembly comprises an outer tube, an inner core and a main spring, wherein the main spring is arranged between the outer tube and the inner core; the inner core, the main spring and the outer pipe at the abutting surfaces of the upper bushing and the lower bushing jointly define a first accommodating space, and the inner core of the upper bushing and the inner core of the lower bushing jointly define a second accommodating space.

Further, first accommodation space link up go up the bush with the outer tube department of lower liner is formed with the second and dodges the hole first accommodation space runs through go up the bush with the inner core department of lower liner is formed with the first hole of dodging.

Optionally, the inner core side walls at the abutting surfaces of the upper bushing and the lower bushing are provided with notches to define a first avoidance hole together; the outward appearance lateral wall that goes out of the binding face of going up the bush with lower liner cover all has the breach, inject jointly with the first just right second of dodging the hole dodges the hole.

Further, a through hole for the fastener to pass through is formed in one of the inner core of the upper bushing and the inner core of the lower bushing, and a threaded hole matched with the fastener is formed in the other one of the inner core of the upper bushing and the inner core of the lower bushing.

Optionally, at least one of the inner core of the upper bushing and the inner core of the lower bushing is embedded with or welded to a nut matched with the fastener.

Further, go up the inner core of bush with the inner core of lower bush prescribe a limit to jointly with the first hole of dodging of accommodation space intercommunication, the outer tube of going up the bush with the outer tube of lower bush prescribe a limit to jointly with the just right second hole of dodging of first hole of dodging dodges.

Furthermore, the outer pipe of the upper bushing and the outer pipe of the lower bushing are plastic pieces, and the inner core of the upper bushing and the inner core of the lower bushing are provided with lightening holes.

According to the utility model discloses a suspension for electric vehicle of second aspect embodiment includes: the connecting rod and the auxiliary frame connecting bush are the bushes in the above embodiments, and at least part of the connecting rod is arranged in the first accommodating space of the bush.

Further, the upper bushing and the lower bushing are fixedly connected with the at least part of the connecting rod by a fastener disposed in the second receiving space.

In some embodiments, the suspension further comprises: the power assembly connecting bushing is arranged at one end of the connecting rod and is suitable for being connected with a power assembly of the electric vehicle; the auxiliary frame connecting bush is fixedly connected with the other end of the connecting rod.

According to the utility model discloses electric vehicle of third aspect embodiment includes: the suspension component for the electric vehicle is characterized by comprising a subframe and the suspension component for the electric vehicle in the embodiment, wherein the subframe is provided with a suspension mounting hole; the auxiliary frame connecting bush is matched with the suspension mounting hole.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic top view of a suspension according to an embodiment of the invention;

fig. 2 is a schematic exploded view of a suspension according to an embodiment of the invention;

fig. 3 is a schematic perspective view of a subframe connection bushing of a suspension according to an embodiment of the present invention;

fig. 4 is a front view schematic of a subframe attachment bushing of a suspension according to an embodiment of the present invention;

fig. 5 is a perspective view of an upper bushing of a subframe connection bushing of a suspension according to an embodiment of the present invention;

FIG. 6 is a schematic top view of an upper bushing of a subframe attachment bushing of a suspension according to an embodiment of the present invention;

fig. 7 is a perspective view of a lower bushing of a subframe connection bushing of a suspension according to an embodiment of the present invention;

fig. 8 is a schematic top view of a lower bushing of a subframe attachment bushing of a suspension according to an embodiment of the invention;

fig. 9 is a schematic view of the sub-frame connecting bushing of the suspension member and the sub-frame according to the embodiment of the present invention.

Reference numerals:

the suspension 100, subframe 200,

a connecting rod 10, a power unit connecting bush 20, a sub-frame connecting bush 30,

the bearing comprises an upper bushing 31, a lower bushing 32, a first accommodating space a, an upper accommodating space a1, a lower accommodating space a2, a second accommodating space b, a first avoiding hole c, a second avoiding hole d and a lightening hole e.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A bushing according to an embodiment of the invention is described below with reference to fig. 1-9.

As shown in fig. 3 and 4, a bush according to an embodiment of the first aspect of the present invention includes: the upper bushing 31 and the lower bushing 32, the upper bushing 31 and the lower bushing 32 are detachably attached to each other to form a bushing body, and the bushing body includes a first receiving space a which extends outward from the inner attachment of the upper bushing 31 and the lower bushing 32 and penetrates through the outer side wall of one side of the bushing body.

Specifically, the upper bushing 31 is disposed opposite to the lower bushing 32, the upper bushing 31 and the lower bushing 32 are respectively press-fitted to a body of the vehicle, and the other component connected to the bushing extends into the first receiving space a, so that the component requiring vibration isolation and energy dissipation through the bushing is mounted on the body.

According to the bushing provided by the embodiment of the utility model, the bushing is constructed into a split structure, and the upper bushing 31 and the lower bushing 32 are respectively pressed on the vehicle body, so that the structure of the bushing is simpler, and the vibration damping and torsion eliminating effects are better; and the assembly between the parts connected with the bush on the vehicle body and the bush is simpler, and the interference with other parts on the vehicle body can be avoided in the assembly process.

It is to be understood that the bushing of the present embodiment is suitable for use in a vehicle, but is not limited to only a vehicle.

As shown in fig. 4 to 9, the abutting surface of the upper bushing 31 is formed with an upper accommodating space a1 extending toward the sidewall and penetrating through the lower sidewall from the inside, the abutting surface of the lower bushing 32 is formed with a lower accommodating space a2 extending toward the sidewall and penetrating through the upper sidewall from the inside, and the upper accommodating space a1 and the lower accommodating space a2 define a first accommodating space a.

An upper receiving space a1 and a lower receiving space a2 are respectively opened on the upper bushing 31 and the lower bushing 32, and the upper receiving space a1 is extended outward from the inside of the upper bushing 31 to penetrate through the side wall and the lower side wall of the upper bushing 31, and the lower receiving space a2 is extended outward from the inside of the lower bushing 32 to penetrate through the side wall and the lower side wall of the lower bushing 32, thereby defining a first receiving space a.

Therefore, the structure of the first accommodating space a is more reasonable, one part of the first accommodating space a is formed into the upper accommodating space a1, and the other part of the first accommodating space a is formed into the lower accommodating space a2, so that the stress of the upper bushing 31 and the stress of the lower bushing 32 are more reasonable, the stress of the upper bushing and the stress of the lower bushing are approximately the same, and the service life of the bushings can be effectively prolonged.

Further, the bushing body further includes a second receiving space b extending in a circumferential direction of the bushing body and penetrating the bushing body. In this way, the fastening member may pass through the second receiving space b to fasten the component protruding into the first receiving space a, thereby improving the connection stability of the component protruding into the first receiving space a with the bushing body.

According to some embodiments of the present invention, the upper bushing 31 and the lower bushing 32 each comprise: the spring comprises an outer tube, an inner core and a main spring, wherein the main spring is arranged between the outer tube and the inner core, the main spring and the outer tube at the abutting surfaces of the upper bushing 31 and the lower bushing 32 jointly define a first accommodating space a, and the inner core of the upper bushing 31 and the lower bushing 32 jointly define a second accommodating space b.

In other words, the member connected to the bushing body protrudes into the first receiving space a in a first direction (i.e., an extending direction of the first receiving space a), and the fastener protrudes into the second receiving space b in a second direction (i.e., an extending direction of the second receiving space b), and the first direction is perpendicular to the second direction. This can further improve the stability of the connection between the member inserted into the first receiving space a and the bushing body.

It will be appreciated that the upper and lower bushings 31, 32 each comprise: the spring comprises an outer tube, an inner core and a main spring, wherein the main spring is arranged between the outer tube and the inner core. Thereby, the elastic deformation of the main spring absorbs energy impact (for example, vibration, torsion force, etc.), and the vibration-damping and energy-dissipating effects of the upper and lower bushes 31 and 32 are improved.

As shown in fig. 4 to 9, a first relief hole c is formed at a position where the first receiving space a penetrates the inner core of the upper and lower bushings 31 and 32, and a second relief hole d is formed at a position where the first receiving space a penetrates the outer tube of the upper and lower bushings 31 and 32.

In other words, the inner core side walls at the joint surfaces of the upper bushing 31 and the lower bushing 32 are provided with notches and define a first avoiding hole c together, and the outer tube side walls at the joint surfaces of the upper bushing 31 and the lower bushing 32 are provided with notches and define a second avoiding hole d opposite to the first avoiding hole c together.

It is understood that one side of the first receiving space a has an open end formed as a first escape hole c, and the outer tube of the upper bushing 31 and the outer tube of the lower bushing 32 define a second escape hole d opposite to the first escape hole c.

Further, at least one of the inner core of the upper bushing 31 and the inner core of the lower bushing 32 is provided with a threaded hole to be threadedly engaged with the fastener.

In other words, the inner core of the upper bushing 31 is provided with an upper through hole matched with the fastener, the inner core of the lower bushing 32 is provided with a lower through hole matched with the fastener, the upper through hole or/and the lower through hole are/is a threaded hole, and the upper through hole and the lower through hole jointly define the second accommodating space b.

Thus, the fastener can pass through the upper through hole, the mounting hole of the part connected with the bushing body and enter the lower through hole in sequence. The upper through hole and/or the lower through hole are/is configured as a threaded hole, so that the fastening piece is fastened with the upper through hole or the lower through hole in a threaded manner, and therefore the part connected with the bushing body is stably fixed on the vehicle body.

It should be noted that the upper through hole or/and the lower through hole is a threaded hole, which means that: in some embodiments, the upper through-hole is configured as a threaded hole; in other embodiments, the lower through-hole is configured as a threaded hole; in further embodiments, the upper and lower through-holes are each configured as threaded holes.

Of course, the configuration of the upper bushing 31 and the lower bushing 32 according to the embodiment of the present invention is not limited thereto, and in other embodiments, a through hole for passing a fastener is provided on one of the inner core of the upper bushing 31 and the inner core of the lower bushing 32, and a threaded hole for fitting the fastener is provided on the other of the inner core of the upper bushing 31 and the inner core of the lower bushing 32. In this way, the effect of improving the connection stability between the component connected with the bushing body and the bushing body can also be achieved, and details are not repeated here.

Further, in a preferred embodiment, at least one of the inner core of the upper bushing 31 or the inner core of the lower bushing 32 is embedded with or welded to a nut fitted with a fastener.

Further, the outer tube of the upper bushing 31 and the outer tube of the lower bushing 32 are plastic members, and the inner core of the upper bushing 31 and the inner core of the lower bushing 32 are provided with lightening holes e. Therefore, on the premise of meeting the structural strength of the suspension 100, the weight of the suspension 100 is lower, and the requirement of light weight is met.

As shown in fig. 1 and 2 and 9, a suspension 100 for an electric vehicle according to an embodiment of a second aspect of the present invention includes: the connecting rod 10, the subframe connecting bushing 30 being the bushing in the above embodiment, at least a portion of the connecting rod 10 is disposed in the first receiving space a of the bushing.

That is, the above-mentioned member connected to the bushing body is the link 10, and the upper bushing 31 and the lower bushing 32 are fitted and define the first receiving space a that receives at least a portion of the link 10. From this, connecting rod 10 can stretch into in first accommodation space a to be connected with last bush 31 and lower bush 32, not only can improve the connection stability between the three, split type structure moreover only need set up on the automobile body with the nearly trompil of connecting rod 10 geometric dimension can, when having reduced open area, make the structural strength of automobile body higher.

As shown in fig. 5 and 7, the side wall of the core of the upper liner 31 and the side wall of the core of the lower liner 32 define a first stopper hole c. It will be appreciated that the geometry of the first limiting hole c is identical to or slightly larger than the geometry of the connecting rod 10, so as to further improve the fixing effect of the connecting rod 10 in the subframe connecting bushing 30.

In other words, the lower sidewall of the upper bushing 31 is provided with the upper receiving space a1, the upper sidewall of the lower bushing 32 is provided with the lower receiving space a2 opposite to the upper receiving space a1, and the lower receiving space a2 and the upper receiving space a1 define the first receiving space a. Further, the connecting rod 10 extends into the first accommodating space a, and the connecting rod 10 is limited by the first limiting hole c and the second limiting hole d.

Wherein, an upward sunk hole is formed on the upper liner 31, a downward sunk hole is formed on the lower liner 32, and the two sunk holes define a first limit hole c. Thus, the link 10 can be inserted into the first stopper hole c to effectively improve the connection stability of the link 10 and the subframe connection portion 30.

In some embodiments, the upper and lower bushings 31, 32 are fixedly connected with at least a portion of the connecting rod 10 by fasteners. Thus, the portion of the connecting rod 10 protruding into the receiving space is fastened to the upper and lower bushes 31 and 32 by the fastening members. Thus, the connection stability among the three can be further improved.

The suspension further includes: the sub-frame connecting structure includes a power assembly connecting bushing 20, the power assembly connecting bushing 20 is disposed at one end of the connecting rod 10 and adapted to be connected to a power assembly of an electric vehicle, a sub-frame connecting bushing 30 is disposed in a first receiving space a for receiving the other end of the connecting rod 10, and the sub-frame connecting bushing 30 is fixedly connected to the other end of the connecting rod 10 by a fastening member.

It is understood that the subframe 200 structure to which the suspension 100 of the present embodiment is applied is different from the subframe 200 structure of the related art, and the subframe 200 to which the suspension 100 of the present embodiment is applied is fixedly connected to the subframe connection bushing 30 in one direction, and the link 10 is fixedly connected to the subframe connection bushing 30 in the other direction.

It should be noted that, as shown in fig. 3 and 4, according to some embodiments of the present invention, the subframe connecting bushing 30 is fixedly connected to one end of the connecting rod 10 by a fastener.

Specifically, the subframe connection bushing 30 is configured as a suspension bushing which is press-fitted into the subframe 200, and then one end of the connecting rod 10 is inserted into the subframe 200 and fastened thereto by a fastener which passes through the subframe connection bushing 30 and the connecting rod 10 in this order. Thus, on the premise of improving the structural strength of the suspension member 100 and the fixing effect of the suspension member 100 and the subframe 200, the connecting rod 10 can be limited by the fastening member, so that the matching effect of the connecting rod 10 and the suspension bushing is improved.

According to the suspension 100 for the electric vehicle, the connecting rod 10 is connected with the auxiliary frame connecting bush 30 through the fastener, and the connecting rod 10 is detachably connected with the auxiliary frame connecting bush 30, so that the connecting rod 10 and the auxiliary frame 200 can be prevented from interfering in the connection process of the auxiliary frame 200 and the suspension 100, the matching performance of the suspension 100 and the auxiliary frame 200 is better, and the assembly is simpler and more convenient; and the structural strength of the suspension 100 can be improved, so that the suspension 100 meets the use requirements.

In other words, the powertrain connection bushing 20 is provided at one end of the connecting rod 10 and adapted to be connected with a powertrain of an electric vehicle; the subframe connection bushing 30 is detachably provided at the other end of the link 10 and adapted to be connected with a subframe 200 of the electric vehicle.

Further, the suspension 100 is constructed in a split structure, and the powertrain connection bushing 20 adapted to be connected with the powertrain and the subframe connection bushing 30 adapted to be connected with the subframe 200 are fixedly connected by the connecting rod 10, and the connecting rod 10 is detachably connected with the subframe connection bushing 30.

Thus, during the connection of the suspension 100 to the subframe 200, the subframe connection bushing 30 may be first fixed to the subframe 200, and the link 10 may be mounted to the subframe connection bushing 30.

Thus, the connecting rod 10 is detachably connected with the subframe connecting bush 30, so that the connecting rod 10 and the subframe 200 can be prevented from interfering in the connection process of the subframe 200 and the suspension member 100, the matching performance of the suspension member 100 and the subframe 200 is better, and the assembly is simpler and more convenient; but also the use requirements of the suspension 100.

It is understood that the suspension 100 of the present embodiment is also applicable to the conventional subframe 200, and the suspension 100 of the present embodiment can be selectively disassembled and assembled, so that the assembly of the suspension 100, the assembly of the suspension 100 to the subframe 200, or the installation of the subframe connecting bushing 30 to the subframe 200, and the installation of the connecting rod 10 to the subframe 200 can be performed according to the installation requirements of different subframes 200.

In some embodiments, as shown in fig. 5 and 8, both the upper bushing 31 and the lower bushing 32 are detachably provided on the connecting rod 10 by a fastener.

It will be appreciated that the outer tube is made of PA66 (polyhexamethylene adipamide, thermoplastic resin) material, which effectively prevents the subframe attachment bushing 30 from scratching the subframe 200 during press-fitting.

The X-direction static stiffness of the subframe connection bushing 30 is: (350 +/-15%) N/mm, and the static rigidity in the X direction of the power assembly connecting bushing 20 is as follows: (490 +/-15%) N/mm, and the dynamic-static ratio of the auxiliary frame connecting bush 30 to the powertrain connecting bush 20 is 1.3-1.5. Like this, the static rigidity and the dynamic-static ratio of sub vehicle frame connection bush 30 and powertrain connection bush 20 are all more reasonable, when improving the structural strength of suspension 100, make suspension 100 satisfy the user demand.

According to the utility model discloses electric vehicle of third aspect embodiment includes: the subframe 200 and the suspension 100 for an electric vehicle in the above embodiment, the subframe 200 is provided with a suspension mounting hole; the subframe connection bushing 30 is fitted into the suspension mounting hole.

According to the utility model discloses electric vehicle adopts above-mentioned electric vehicle's suspension 100, and the technological effect that has is unanimous with above-mentioned suspension 100, no longer gives unnecessary details here.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A bushing, comprising:

an upper bushing (31);

a lower bushing (32);

the upper bushing (31) and the lower bushing (32) are detachably attached to each other to form a bushing body, and the bushing body comprises a first accommodating space (a) which extends outwards from the inner attaching position of the upper bushing (31) and the lower bushing (32) and penetrates through the outer side wall of one side of the bushing body.

2. The bushing of claim 1, wherein: the joint surface of the upper liner (31) is internally provided with an upper accommodating space (a1) extending towards the side wall and penetrating through the lower side wall, the joint surface of the lower liner (32) is internally provided with a lower accommodating space (a2) extending towards the side wall and penetrating through the upper side wall, and the upper accommodating space (a1) and the lower accommodating space (a2) define the first accommodating space (a).

3. The bushing of claim 1, wherein: the bushing body further includes a second receiving space (b) extending in an axial direction of the bushing body and penetrating the bushing body.

4. A bushing according to any of claims 1-3,

the upper bushing (31) and the lower bushing (32) each include: the spring assembly comprises an outer tube, an inner core and a main spring, wherein the main spring is arranged between the outer tube and the inner core;

the inner core, the main spring and the outer pipe at the abutting surfaces of the upper bushing (31) and the lower bushing (32) jointly define a first accommodating space (a),

the inner cores of the upper and lower bushings (31, 32) together define a second accommodation space (b).

5. The bushing of claim 4,

a first avoidance hole (c) is formed at an inner core of the first accommodation space (a) penetrating the upper bushing (31) and the lower bushing (32);

a second avoidance hole (d) is formed at a position where the first accommodation space (a) penetrates through the outer tubes of the upper bushing (31) and the lower bushing (32).

6. The bushing of claim 5,

the inner core side walls at the joint surfaces of the upper bushing (31) and the lower bushing (32) are provided with notches to define a first avoidance hole (c) together;

go up bush (31) with the outer tube lateral wall of lower bush (32) binding face department all has the breach, inject jointly with first dodge hole (c) just right second dodge hole (d).

7. The bushing of claim 4, wherein one of the inner core of the upper bushing (31) and the inner core of the lower bushing (32) is provided with a through hole for passing a fastener, and the other of the inner core of the upper bushing (31) and the inner core of the lower bushing (32) is provided with a threaded hole for cooperating with the fastener.

8. Bushing according to claim 4, characterized in that at least one of the cores of the upper bushing (31) and of the lower bushing (32) is embedded or fixed by welding with a nut cooperating with a fastener.

9. Bushing according to claim 4, characterized in that the outer tube of the upper bushing (31) and the outer tube of the lower bushing (32) are plastic pieces, and that the inner core of the upper bushing (31) and the inner core of the lower bushing (32) are provided with lightening holes (e).

10. A suspension for an electric vehicle, comprising:

a connecting rod (10);

-a sub-frame connection bushing (30), the sub-frame connection bushing (30) being a bushing according to any one of claims 1-9,

at least part of the connecting rod (10) is arranged in the first accommodation space (a) of the bushing.

11. The suspension of claim 10, wherein:

the upper and lower bushings (31, 32) are fixedly connected with the at least part of the connecting rod (10) by fasteners disposed in a second receiving space (b).

12. The suspension of claim 10 or 11, wherein: the suspension further includes:

a powertrain connection bushing (20), the powertrain connection bushing (20) being disposed at one end of the connecting rod (10) and adapted to be connected with a powertrain of the electric vehicle;

and the auxiliary frame connecting bush (30) is fixedly connected with the other end of the connecting rod (10).

13. An electric vehicle, characterized by comprising:

the auxiliary frame (200) is provided with a suspension mounting hole;

the suspension (100) for an electric vehicle according to any one of claims 10 to 12, wherein the sub-frame connection bushing (30) is fitted to the suspension mounting hole.

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