CN216300703U

CN216300703U - Vehicle and rear suspension assembly for vehicle

Info

Publication number: CN216300703U
Application number: CN202123127221.XU
Authority: CN
Inventors: 杨方; 刘志杰; 罗健; 施永祥
Original assignee: Weilai Automobile Technology Anhui Co Ltd
Current assignee: Weilai Automobile Technology Anhui Co Ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-04-15
Anticipated expiration: 2031-12-13
Also published as: WO2023109744A1

Abstract

The utility model relates to the technical field of vehicles, in particular to a vehicle and a rear suspension assembly for the vehicle, and aims to solve or relieve the problem that the stability and the anti-roll capability of the body of the existing automobile are poor. The present invention provides a rear suspension assembly for a vehicle, comprising: a movable portion disposed on a wheel of a vehicle; a fixing portion provided on a frame of a vehicle; wherein, movable part and fixed part sliding connection to: by means of this sliding connection, the wheel can slide at least in the vertical direction relative to the fixed part. The rear suspension assembly provided by the utility model can convert the bouncing motion of the wheels into the vertical sliding motion of the wheels, so that the positioning parameters of the wheels are always kept constant, and the stability and the anti-roll capability of a vehicle body are improved.

Description

Vehicle and rear suspension assembly for vehicle

Technical Field

The utility model relates to the technical field of vehicles, and particularly provides a vehicle and a rear suspension assembly for the vehicle.

Background

At present, in the automobile industry, various schemes are designed for a rear wheel suspension structure, and a non-independent suspension system and an independent suspension system are common, wherein a Macpherson suspension system in the independent suspension system is mostly applied to small and medium-sized cars due to the advantages of compact structure, small change of front wheel positioning parameters when wheels jump, strong operation stability and the like.

However, since the macpherson suspension system only relies on the lower bracket arm and the shock absorber strut to bear the impact force, the stability of the vehicle body is poor, and the shock absorber is installed in an inclined manner, so that the vehicle inevitably jumps when running on an uneven road surface, and the anti-roll capability of the whole vehicle is poor.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve or at least alleviate the above technical problems, i.e. the problems of poor body stability and anti-roll capability of existing automobiles.

In a first aspect, the present invention provides a rear suspension assembly for a vehicle, the rear suspension assembly comprising: a movable portion disposed on a wheel of the vehicle; a fixing portion provided on a frame of the vehicle; wherein the movable part is slidably connected with the fixed part so as to: by means of this sliding connection, the wheel can slide at least in the vertical direction relative to the fixed part.

According to the rear suspension assembly provided by the utility model, the fixed part is arranged on the frame, the movable part is arranged on the wheel, so that the sliding motion of the wheel in the vertical direction is at least realized by virtue of the sliding connection between the fixed part and the movable part, and therefore, when the wheel turns or meets an obstacle, the obstacle applies at least a longitudinal load to the wheel, and in some cases, a transverse load is applied, the longitudinal load is transferred to the movable part and then converted into the vertical sliding motion of the movable part, the transverse load is absorbed and digested by a sliding pair formed by the movable part and the fixed part, so that the bouncing motion of the wheel is converted into the vertical sliding motion of the wheel, and for a vehicle body, the roll center and the mass center of the vehicle body cannot deviate, so that the vehicle cannot roll, the positioning parameters of the wheel are always kept constant, and the stability and the anti-roll capability of the vehicle body are improved.

In the utility model, the movable part and the wheel can be fixedly connected or pivotally connected, and when the movable part and the wheel are pivotally connected, the rotating center line extends along the vertical direction. For example, the wheel is fixedly connected with a steering knuckle, the steering knuckle can be fixedly connected with the movable part, and the steering of the wheel is realized through a rotating connection structure of the movable part. Or the steering knuckle may be pivotally connected to the movable portion with a centre line of rotation extending in a vertical direction, steering of the wheel being achieved by rotation of the steering knuckle relative to the movable portion.

For the sliding connection between the movable part and the fixed part, the movable part simply slides along the fixed part in the vertical direction, for example, at least a part of the fixed part is made into a prism structure, and the movable part is sleeved on the prism structure and slides relative to the prism structure only in the vertical direction. Or the movable part can be a combined movement of vertical sliding and rotation, for example, at least one part of the fixed part is made into a cylindrical structure, the movable part is sleeved on the cylindrical structure, and the movable part can slide relative to the fixed part in the vertical direction and simultaneously rotate relative to the fixed part, wherein the rotation center line is the axis of the cylindrical structure.

Alternatively, the rotational movement of the mobile part with respect to the fixed part can also be transferred to the mobile part itself by means of the connecting structure. In particular, the transfer of relative motion may be achieved by adding a bearing between the movable part and the fixed part.

With the rear suspension assembly for a vehicle described above, in some embodiments, the fixed portion includes a guide portion, and the movable portion includes a sliding portion fitted with the guide portion, and the movable portion slides with respect to the fixed portion by means of sliding engagement of the sliding portion with the guide portion.

By providing the guide portion and the sliding portion fitted to the guide portion, the sliding movement of the movable portion can be guided better.

The guide portion may be provided in various ways. For example, the guide portion may be a guide slot structure extending in the vertical direction, or a guide post structure extending in the vertical direction, or a combination of a guide slot structure and a guide post structure, and the like. Further, the dimension of the guide groove structure or the guide post structure extending in the vertical direction may be any as long as it is ensured that at least a part thereof can be used to guide the sliding movement of the sliding portion.

There are also various ways of arranging the sliding portion. For example, the sliding portion may be integrally formed, or may be formed by combining a plurality of single bodies, and the number of the single bodies may be various in a configuration manner of combining a plurality of single bodies.

It will be appreciated that the fixing portion may also comprise other functional components associated with the mounting of the guide portion. For example, the guide portion is fixedly connected to the frame by a connecting portion. Furthermore, since the movable part is also connected to the knuckle, it can be fixedly or pivotally connected to the knuckle, in which case the movable part can also comprise a rotating part.

With respect to the rear suspension assembly for a vehicle described above, in some embodiments, the sliding portion includes at least one unitary body that forms or configures the sliding portion.

When the sliding portion is formed of only one single structure, since the sliding portion of the single structure does not need to be additionally connected, its strength is higher, and various problems such as a sliding failure due to a connection failure can be avoided.

When the sliding part is formed by a plurality of single structures, the connection between the sliding part and the guide part can be more flexible, the limitation on the structural design of the guide part can be greatly reduced, and the scheme is easier to realize.

When a plurality of monomers are used, the structures of the respective monomers may be the same, different or partially different. Furthermore, the individual monomers may have the same function, may also be different or partly different.

With regard to the rear suspension assembly for a vehicle described above, in some embodiments, in a case where the single body includes a plurality of single bodies, at least a portion of the plurality of single bodies is fixedly connected or integrally formed.

When there are a plurality of monomers, there may be a plurality of connection modes between the monomers. For example, the single body includes a first single body and a second single body, and the first single body and the second single body are fixedly connected by a fastener after being fastened, so that the sliding portion is formed. Or the single body comprises a first single body, a second single body and a third single body, under the condition that the first single body and the second single body are in a buckling state, the third single body is clamped between the first single body and the second single body, so that a gap is formed between the first single body and the second single body, and in the sliding process of the sliding part formed by construction relative to the guide part, the contact area between the sliding part and the guide part can be reduced due to the gap formed by the sliding part per se, and the friction resistance in the sliding process is further reduced. The third monomer can be integrally formed with the first monomer or the second monomer, and can also be connected in a connecting mode such as welding, bonding, screwing and the like.

It will be appreciated that other single body constructions are possible that can be configured to form the sliding portion.

With regard to the rear suspension assembly for a vehicle described above, in some embodiments, the sliding portion includes a first single body and a second single body, and the first single body and the second single body are configured to be matched with the guide portion in a manner of being buckled with each other.

In this way, a specific construction of the sliding part is provided. The first single body and the second single body are constructed in a manner of being buckled with each other to form a structure matched with the guide part, so that the sliding part can be connected to the guide part more conveniently, and the structure of the sliding part in the form is simpler and easier to realize.

With regard to the rear suspension assembly for a vehicle described above, in some embodiments, the guide portion includes a guide body on which a slide section is provided, the slide portion being in sliding engagement with the slide section.

In this way, a construction of the guide portion is provided. It will be appreciated that the guide portion may comprise, in addition to the guide body, an auxiliary guide portion for performing a guiding function in cooperation with the guide body. For example, the guiding body is a guiding column structure, and the auxiliary guiding portion is a guiding groove structure, that is, the guiding portion is a combination of the guiding column and the guiding groove, wherein the guiding column plays a main role.

Further, the sliding portion may slide with respect to only a portion of the guide body, that is, the sliding section, during the sliding with respect to the guide body, where the sliding range of the sliding portion is limited to the sliding section. For example, the guide body is a prism structure, and the middle section of the prism structure is made into a cylindrical structure, so that the sliding part only slides within the length range of the cylindrical structure.

With the rear suspension assembly for a vehicle described above, in some embodiments, the sliding portion is further provided with a sliding bush by means of which the sliding portion is slidably fitted with the sliding section.

By providing the sliding portion with the sliding bush, the sliding bearing structure is constructed by the sliding bush, so that the respective wear of the sliding portion and the sliding section can be reduced, and the sliding movement can be made smoother. The sliding bush exists as a single structure configured to form the sliding portion.

Lubricating oil or lubricating grease is filled between the sliding bush and the sliding section. In addition, the sliding bush can be integrally formed or can be made into a split structure, for example, a complete sliding bush is formed by a buckling connection structure.

With regard to the rear suspension assembly for a vehicle described above, in some embodiments, the sliding portion is further provided with a bearing including an inner race and an outer race, the outer race being connected with the sliding portion, the inner race being connected with the sliding bush so as to: the sliding part can slide relative to the sliding section in the vertical direction and can swing relative to the sliding bush in the horizontal direction.

Through setting up the bearing, can make sliding part self structure form the revolute pair, so, at the wheel steering in-process, the transverse load and the vertical load that the wheel received can be absorbed the conversion by revolute pair and sliding pair respectively to further reduce the impact force that the frame received, promote driving stationarity, improve the comfort level of riding.

It will be appreciated that the bearings may be ball bearings or roller bearings and the roller bearings may be cylindrical roller bearings or tapered roller bearings. Further, the number of bearings may be a combination of one or more bearings. When the number of the bearings is plural, the plural bearings are spaced apart from each other in the vertical direction, and therefore, a structure for restricting the relative displacement of the bearings may be provided between the two bearings, for example, the structure may be an annular ring formed on the slide bush and protruding from the surface of the slide bush, and/or the structure may be an annular ring formed on the slide part and protruding from the inner surface of the slide part.

It should be noted that the connection mode of the bearing, the sliding part and the sliding bush is interference fit connection.

With regard to the rear suspension assembly for a vehicle described above, in some embodiments, the fixed portion is further provided with a stopper portion provided to the sliding section so as to define a sliding range of the movable portion.

Through set up spacing part at the fixed part, can inject the slip range of movable part better to avoid the wheel to move the range in vertical direction too big and lead to the automobile body to jolt and feel obvious.

The limiting part can be realized in various ways. For example, the limiting portion may be a structure formed by the guiding body or the guiding portion itself, or a structure formed by being connected to the guiding portion by bonding, welding, screwing, or the like, or a combination of the above two cases.

With the rear suspension assembly for a vehicle described above, in some embodiments, the fixing portion is further provided with a shock absorbing portion provided to the sliding section.

Through setting up the shock attenuation part, can further reduce the impact force to the frame in the wheel motion process, guarantee riding comfort.

The shock absorbing part can be implemented in various ways. For example, the damping portion is a spring sleeved on the sliding section and located between the limiting portion and the sliding portion, or the damping portion is a piston rod disposed upstream and downstream of the sliding path of the sliding portion as viewed vertically, or a combination of the above two damping manners, but other types of components and combinations thereof capable of achieving the damping effect are also possible.

In a second aspect, the utility model also provides a vehicle equipped with a rear suspension assembly for a vehicle as claimed in any one of the preceding claims.

It can be understood that, since the vehicle is provided with the rear suspension assembly for a vehicle according to any one of the foregoing technical solutions, all technical effects of the rear suspension assembly are achieved, and detailed description thereof is omitted here.

Drawings

The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Further, like numbers are used to indicate like parts throughout the drawings, in which:

fig. 1 is a schematic view of an assembly structure of a rear suspension assembly according to an embodiment of the present invention;

fig. 2 is an exploded view of a sliding portion and a guiding portion of a rear suspension assembly according to an embodiment of the present invention;

list of reference numerals:

1. a frame; 2. a movable portion; 20. a first monomer; 21. a second monomer; 22. a sliding bush; 3. a fixed part; 30. a guide portion; 300. a sliding section; 31. a connecting portion; 4. a damping spring; 5. a limiting plate; 6. a knuckle; 7. a wheel; 8. a shock absorber.

Detailed Description

It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details.

It should be noted that directional terms such as "front", "rear", "upper", "lower", and the like are used herein with reference to the front-rear direction of the vehicle after the components are mounted to the vehicle. The terms "longitudinal" and "longitudinal" are used herein with reference to the front-rear direction of the component after it is mounted to the vehicle, and the terms "lateral" and "transverse" refer to directions perpendicular to the longitudinal direction. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Before describing the aspects of the present invention, a brief description will be given of the reason why the wheel runout is liable to cause the roll of the vehicle. As will be appreciated by those skilled in the art, in the case of a macpherson suspension system, where the wheel is pivotally connected to the frame by a lower control arm, the pivot axis of the pivotal connection extends in a horizontal direction, and when the wheel rolls over an obstacle, some of the longitudinal and lateral loads on the wheel are not absorbed by the revolute pair conversion, and thus longitudinal and lateral accelerations are formed at the connection, causing the wheel and frame on one side of the vehicle to lift, resulting in a roll of the vehicle body, and reducing the ride stability.

In order to solve the above problems, embodiments of the present invention provide a rear suspension assembly that includes a frame, a fixing portion provided on the frame, the wheel is provided with a movable part, so that the wheel at least realizes sliding movement in the vertical direction by virtue of the sliding connection between the fixed part and the movable part, and thus, when the wheels turn or encounter obstacles, the obstacles can apply at least longitudinal load and in some cases transverse load to the wheels, the longitudinal load is transferred to the movable part and then converted into vertical sliding motion of the movable part, the transverse load can be absorbed and digested by a sliding pair formed by the movable part and the fixed part, thereby converting the bouncing movement of the wheels into the vertical sliding movement of the wheels, and for the vehicle body, the center of roll and the center of mass of the vehicle can not deviate, so that the vehicle can not roll, the positioning parameters of the wheels are always kept constant, and the stability and the anti-roll capability of the vehicle body are improved.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1

Fig. 1 is a schematic view of an assembly structure of a rear suspension assembly according to an embodiment of the present invention; fig. 2 is an exploded view of a sliding portion and a guiding portion of a rear suspension assembly according to an embodiment of the present invention.

The rear suspension assembly provided by the utility model comprises a fixed part and a movable part, wherein the movable part is connected with the fixed part in a sliding manner, and the connected movable part can slide along the vertical direction relative to the fixed part.

As shown in fig. 1, the fixing portion 3 includes a guide portion 30 for guiding the movement of the movable portion 2 and a connecting portion 31 for fixedly connecting the guide portion 30 to the frame 1. The guide portion 30 and the connecting portion 31 may be integrally formed, or may be integrally connected by welding, bonding, screwing, or the like. In the present embodiment, the connecting portion 31 is integrally formed with the guide portion 30 in relation to the manner of arranging the sliding portion of the movable portion 2, and the sliding portion in the present embodiment is provided in a separate structure and can be easily connected to the guide portion 30, so that it is not necessary to consider the problem of connection with the sliding portion after the connecting portion 31 is integrally formed with the guide portion 30. The guide portion 30 is made in a solid or hollow prism structure at least at a position corresponding to the sliding portion as a sliding section 300 for guiding the movable portion 2 to slide.

As shown in fig. 2, the movable section 2 in the present embodiment includes a slide portion and a slide bush 22. The sliding part includes a slider structure formed by the first single body 20 and the second single body 21 after being buckled and connected, and a sliding bush 22 is disposed between the slider structure and the sliding section 300. Specifically, the first single body 20 is a bar-shaped block structure, and one side surface thereof is recessed inward to form a first recessed area (not labeled) that fits the outer periphery of the slide bushing 22. The second single body 21 is also a bar-shaped block structure, and one side surface thereof is recessed inward to form a second recessed area (not shown) that fits the outer periphery of the slide bush 22. When the first single body 20 and the second single body 21 are buckled, the first recessed area and the second recessed area enclose a containing space for containing the sliding bush 22. When the installation is completed, the sliding bush 22 is sleeved on the outer periphery of the sliding section 300, the outer surface of the sliding bush 22 is in interference fit with the inner surface of the slider structure, and grease is filled between the sliding bush 22 and the sliding section 300. The sliding bush 22 in this embodiment is made in a split type, and is connected to the sliding section 300 in the same connection manner as the first single body 20 and the second single body 21, and it should be noted that the split type sliding bush 22 is not shown in fig. 2.

Alternatively, the two ends of the sliding bush 22 may be formed with limit bosses (not shown) which are respectively abutted against the top surface and the bottom surface of the slider structure to prevent axial displacement between the slider structure and the sliding bush 22.

In order to limit the sliding motion of the slider structure within a certain range and prevent the excessive motion of the movable part 2, two ends of the sliding section 300 in the embodiment are respectively provided with a limiting plate 5, and the limiting plate comprises an upper limiting plate located above the slider structure and a lower limiting plate located below the slider structure, so that the slider structure can only slide in the region defined by the upper limiting plate and the lower limiting plate. In order to dampen the movement of the slide construction, a damping spring 4 is also arranged between the stop plate 5 and the slide construction. Specifically, a first damping spring (not labeled) is arranged between the upper limit plate and the top surface of the slider structure, and a second damping spring (not labeled) is arranged between the lower limit plate and the bottom surface of the slider structure.

The sliding portion and the guide portion 30 in the present embodiment can only achieve relative sliding in the vertical direction, and therefore it is necessary to rotationally connect the sliding portion and the knuckle 6 through a revolute pair so as to achieve deflection of the wheel 7 at the time of steering. The knuckle 6 is fixedly connected with the hub of the wheel 7 through a hub bearing.

In this embodiment, knuckle 6 still is connected with bumper shock absorber 8, and bumper shock absorber 8 extends along vertical direction, forms two damper with the damping spring 4 combination of fixed part 3 configuration, can further reduce the vibration of driving in-process, improves automobile body stability, promotes and takes the travelling comfort.

During the running process of the vehicle, after the wheels 7 roll to the obstacle, the vehicle can be subjected to transverse load and longitudinal load applied by the obstacle, wherein the longitudinal load is transmitted to the movable part 2 through the steering knuckle 6 to promote the sliding part to move in the vertical direction relative to the guide part 30, the longitudinal load is absorbed and converted, and the transverse load is absorbed by the rotating pair between the steering knuckle 6 and the movable part 2, so that the vehicle can be effectively prevented from rolling, and the anti-rolling capability of the vehicle is improved.

Example 2

The fixed part 3 in this embodiment is arranged in the same manner as the fixed part 3 in embodiment 1, except for the arrangement of the movable part 2.

The movable portion 2 in this embodiment includes a sliding portion, a sliding bush 22, and a bearing (not shown), the sliding portion includes a slider structure formed by engaging the first unit 20 and the second unit 21, the bearing includes an inner ring and an outer ring, the outer ring is connected to an inner surface of the slider structure, and the inner ring is connected to an outer surface of the sliding bush 22. By providing a bearing, a revolute pair is added between the sliding bush 22 and the slider structure, so that the slider structure can both slide in the vertical direction relative to the sliding section 300 by means of the sliding bush 22 and can also swing in the horizontal direction relative to the sliding bush 22 by means of the bearing, thereby further enhancing the ability of the suspension assembly to absorb external impact forces.

Example 3

The present embodiment is different from

embodiments

1 and 3 in that the sliding section 300 of the guide body in the present embodiment is made into a cylindrical structure, and accordingly, the sliding bush 22 and the slider structure are also made into a structure adapted to the cylindrical structure, and in the state of installation, the slider structure can slide up and down relative to the sliding section 300 by means of the sliding bush 22, and can also swing relative to the sliding section 300 by means of the sliding bush 22, so as to better absorb the impact force applied to the wheel 7, and improve the anti-roll capability of the vehicle body.

It is to be understood that the vehicle in the above embodiments may be an electric car, an automobile, or the like.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims

1. A rear suspension assembly for a vehicle, the rear suspension assembly comprising:

a movable portion disposed on a wheel of the vehicle; and

a fixing portion provided on a frame of the vehicle;

wherein the movable part is slidably connected with the fixed part so as to:

by means of this sliding connection, the wheel can slide at least in the vertical direction relative to the fixed part.

2. A rear suspension assembly for a vehicle according to claim 1, wherein said fixed portion includes a guide portion, and said movable portion includes a slide portion fitted with said guide portion, said movable portion being slidable relative to said fixed portion by means of a sliding fit of said slide portion with said guide portion.

3. A rear suspension assembly for a vehicle according to claim 2 wherein the sliding portion comprises at least one single body forming or configuring the sliding portion.

4. A rear suspension assembly for a vehicle according to claim 3 wherein, where the single body comprises a plurality of bodies, at least a portion of the plurality of bodies is fixedly attached or integrally formed.

5. A rear suspension assembly for a vehicle according to claim 4 wherein the sliding portion comprises a first single body and a second single body, the first and second single bodies being snap-fitted to each other to form a structure that mates with the guide portion.

6. A rear suspension assembly for a vehicle according to claim 2 wherein the guide portion includes a guide body having a sliding section provided thereon, the sliding portion being in sliding engagement with the sliding section.

7. A rear suspension assembly for a vehicle according to claim 6 wherein the sliding portion is further provided with a sliding bush by means of which the sliding portion is in sliding engagement with the sliding section.

8. A rear suspension assembly for a vehicle according to claim 7 wherein the sliding section is further provided with a bearing comprising an inner race and an outer race, the outer race being connected to the sliding section and the inner race being connected to the sliding bushing so as to:

the sliding part can slide relative to the sliding section in the vertical direction and can swing relative to the sliding bush in the horizontal direction.

9. The rear suspension assembly for a vehicle according to claim 6, wherein the fixed portion is further provided with a stopper portion provided to the sliding section so as to define a sliding range of the movable portion; and/or

The fixing portion is further provided with a shock absorbing portion provided to the sliding section.

10. A vehicle, characterized in that it is equipped with a rear suspension assembly for a vehicle as claimed in any one of claims 1 to 9.