CN218594076U - Independent suspension swing arm - Google Patents

Abstract

An independent suspension swing arm comprises a swing arm body, a bushing and a shock absorber, wherein the bushing is arranged at one end of the swing arm body, and the shock absorber is arranged between two ends of the swing arm body. Only set up a bush on the swing arm body, reduced manufacturing cost, simplified the structure, alleviateed weight and reduced the occupation to the chassis arrangement space, set up the shock absorber between the both ends of swing arm body for the bearing capacity can also make the swing arm body reduce the requirement to material strength when satisfying the little load motorcycle type and bear the weight of the demand, reduce cost to the both ends dispersion of swing arm body.

Description

Independent suspension swing arm

Technical Field

The utility model relates to a vehicle independent suspension field especially relates to the swing arm on the independent suspension.

Background

The independent suspension swing arm is positioned between an automobile body and wheels, is a main guide rod piece of the suspension, bears longitudinal force and transverse force during starting, braking and turning, can also play a role of a thrust rod, and is one of main parts for determining the performance of the whole automobile. The independent suspension with the double cross arms has two swing arms, and the independent suspension with the double cross arms has only one lower swing arm.

The swing arm of the conventional suspension is generally connected with a steering knuckle at the wheel edge through a ball pin and is connected with a vehicle body or a sub-frame through a bushing, and a general swing arm assembly comprises the ball pin, a swing arm body and a front bushing and a rear bushing. But the arrangement mode of the double bushings occupies a larger chassis arrangement space and has higher cost. Secondly, the effort of shock absorber usually concentrates on the one end of swing arm body, leads to the swing arm body on the main one end of atress to appear damaging easily, in order to guarantee to reach reliable bearing capacity, needs to improve the material strength of swing arm body to the cost has been increased. In addition, the wheel driving mode is that the driving split shaft is usually used for transmitting power to the wheel, the transmission mode has low efficiency and is easy to cause power loss, and in the arrangement of the chassis, a larger arrangement space needs to be provided for the driving split shaft, so that the ground clearance of the whole vehicle is large, and the vehicle body is higher. In addition, the existing common swing arm body has a complex structure, high installation difficulty and low modularization degree, so that the swing arm body and peripheral parts are also complex to install and difficult to disassemble and assemble.

Therefore, in view of the above drawbacks, there is a need for an improvement of the existing independent suspension swing arm to solve the aforementioned problems in many practical situations.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an independent suspension swing arm, through changing the equipment fixed knot structure in the swing arm, reduce the requirement to material strength, simplified the structure, alleviateed weight, reduced to the chassis arrangement space occupy and the cost is reduced.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an independent suspension swing arm comprises a swing arm body, a bushing and a shock absorber, wherein the bushing is arranged at one end of the swing arm body, and the shock absorber is arranged between two ends of the swing arm body; the swing arm body is only provided with the bushing, so that the manufacturing cost is reduced, the structure is simplified, the weight is reduced, the occupation of the chassis arrangement space is reduced, the shock absorbers are arranged between the two ends of the swing arm body, the bearing capacity is dispersed to the two ends of the swing arm body, the requirement of the swing arm body on the material strength can be reduced while the bearing requirement of a small-load vehicle type is met, and the cost is reduced;

correspondingly, a plurality of lightening holes are formed in the swing arm body; the weight of the swing arm body is reduced through the lightening holes, and the requirement of light weight is met;

correspondingly, the bushing comprises a bushing inner sleeve, a rubber sleeve and a bushing outer sleeve which are arranged in sequence; the bearing requirements of small-load vehicle types are met through the multilayer structure, the vibration isolation effect is improved, and the comfort is improved;

correspondingly, a downward boss is arranged in the middle of the swing arm body and used for mounting the shock absorber; the boss is convenient for mounting the shock absorber, and can reduce the space height required by the shock absorber, so that the whole vehicle structure is more compact;

correspondingly, a plurality of wheel cover mounting points for fixing with a wheel cover are arranged on the swing arm body; the wheel cover is arranged on the swing arm body and then the whole vehicle is arranged, so that the convenience of wheel cover installation is improved;

correspondingly, the other end of the swing arm body is provided with a wheel shaft mounting counter bore, a wheel shaft is arranged in the wheel shaft mounting counter bore in an interference fit mode, and the wheel shaft is provided with a rotation limiting plane for limiting the wheel shaft to rotate around the axis of the wheel shaft; the rotation of the wheel shaft is limited through the rotation limiting plane, so that the mounting firmness of the wheel shaft is improved;

correspondingly, the wheel shaft and the swing arm body are fixedly connected through a locking piece; therefore, the firmness of the wheel axle installation is further improved, and the driving safety is improved;

correspondingly, the other end of the swing arm body extends to form a plate-shaped structure, one side of the plate-shaped structure is provided with an inwards concave arc-shaped edge for avoiding a driving motor, the plate-shaped structure is provided with a plurality of mounting points, and the mounting points are used for mounting the driving motor or mounting the driving motor and a wheel cover; the driving motor is arranged on the swing arm body, so that the driving distance between the driving motor and the wheels is reduced, the power transmission efficiency is increased, the power loss is reduced, and the driving motor is convenient to disassemble and assemble;

correspondingly, a plurality of reinforcing ribs positioned between the mounting points are arranged; the reinforcing ribs are used for transmitting the bearing capacity between the two mounting points, so that the reinforcing ribs are uniformly distributed on the swing arm body, the strength of the swing arm body is improved, and the service life of the mounting points is prolonged;

correspondingly, the mounting points are distributed on the plate-shaped structure in a C shape; each mounting point is stressed uniformly and mounted firmly, and the mounting safety and stability of the driving motor are improved.

The utility model has the advantages that:

1) The swing arm body is only installed with a single bushing, and the bushing is of a multi-layer structure of a bushing inner sleeve, a rubber sleeve and a bushing outer sleeve, so that the bearing requirement of a small-load vehicle type is met, the structure is simplified, the occupation of the chassis arrangement space is reduced, the vibration isolation effect is increased, and the riding comfort is improved;

2) The shock absorbers are arranged between the two ends of the swing arm body, particularly the middle part of the swing arm body, so that the load borne by the swing arm body is uniformly distributed to the two ends, the bearing requirement of a small-load vehicle type is met, the requirement on material strength is reduced, and the cost is reduced;

3) The firmness and stability of the wheel shaft installation are ensured through the multiple modes of interference fit, the locking piece and the rotation limiting plane, and the driving safety is improved;

4) The driving motor is arranged on the swing arm body, so that the driving distance between the driving motor and the wheels is reduced, the power transmission efficiency is increased, the power loss is reduced, and the driving motor is convenient to disassemble and assemble;

5) The swing arm body and the peripheral parts of the swing arm body adopt modular design, parts such as a shock absorber, a wheel cover, a driving motor, wheels and the like can be installed on the swing arm body in advance, and then the installed swing arm is integrally installed on a chassis frame, so that the assembly and disassembly are simpler and more convenient.

Drawings

Fig. 1 is a schematic front structural view of a swing arm of an independent suspension according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in a bottom view;

FIG. 3 isbase:Sub>A schematic cross-sectional view of the bushing of FIGS. 1 and 2 taken along the line A-A;

FIG. 4 is a schematic cross-sectional view of the damper of FIG. 2 taken along line B-B;

FIG. 5 is a cross-sectional view of the axle of FIG. 2 in the direction C-C;

fig. 6 is a schematic front structural view of an independent suspension swing arm according to the second embodiment of the present invention;

FIG. 7 is a schematic view of the backside structure of FIG. 6;

FIG. 8 is a schematic view of the structure of FIG. 6 in the bottom view;

fig. 9 is a schematic front structural view of a swing arm body according to a second embodiment of the present invention;

FIG. 10 is a schematic view of the structure of FIG. 9 in the top view;

FIG. 11 is a schematic cross-sectional view of the plate-type structure of FIG. 9 in the D-D direction;

in the figure:

1. a swing arm body; 11. a bolt is installed on the swing arm; 12. a swing arm locking nut; 13. a boss; 14. a plate-shaped structure; 15. reinforcing ribs;

2. a bushing; 21. a bushing inner sleeve; 22. a rubber sleeve; 23. a bushing outer sleeve;

3. a shock absorber; 31. a vibration damping mounting bolt; 32. a vibration damping lock nut; 33. a vibration damping spacer;

4. a wheel axle; 41. a rotation limiting plane; 42. axle fixing bolts;

5. a wheel cover; 51. a first wheel cover mounting bolt; 52. a second wheel casing mounting bolt; 53. a third wheel housing mounting bolt; 54. a fourth wheel housing mounting bolt; 55. a fifth wheel cover mounting bolt; 56. a sixth axle mounting bolt;

6. a drive motor; 61. a first motor mounting bolt; 62. a second motor mounting bolt; 63. a third motor mounting bolt; 64. a fourth motor mounting bolt; 65. and a wheel locking nut.

Detailed Description

In the description of the present invention, it is to be understood that the terms used to indicate an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are used 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. "A number of" a plurality "each means two or more.

The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration only and are not intended to limit the scope of the invention. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

In one embodiment of the present invention, as shown in fig. 1, 2, 6, 7 and 8, the independent suspension swing arm includes a swing arm body 1, a bushing 2 and a shock absorber 3. In this embodiment, the swing arm body 1 is cast from an aluminum alloy, but this does not mean that the aluminum alloy cast plate is the only material and process available for the swing arm body 1, for example, in the case of low bearing requirement, a polymer composite material plate or the like may also be used.

A bushing mounting hole is formed in one end of the swing arm body 1, and a bushing 2 is fixedly mounted in the bushing mounting hole in an interference fit mode. The bush 2 can be single-layer, double-layer or multi-layer composite, in this embodiment, as shown in fig. 3, the bush 2 adopts a three-layer structure, including the bush inner sleeve 21, the rubber sleeve 22 and the bush outer sleeve 23 which are arranged in an interference fit manner, the bush inner sleeve 21 and the bush outer sleeve 23 are used for strengthening the strength of the bush 2, the rubber sleeve 22 is used for improving the vibration isolation effect, and the swing arm mounting bolt 11 and the swing arm locking nut 12 which are used for mounting the swing arm body 1 are arranged through the inner hole of the bush 2.

The shock absorbers 3 are arranged between the two ends of the swing arm body 1, preferably, in order to enable the bearing capacity to be evenly distributed to the two ends of the swing arm body 1, the shock absorbers 3 are arranged in the middle of the swing arm body 1, and the downward bosses 13 are arranged in the middle of the swing arm body 1 in order to further reduce the height space occupied by the shock absorbers 3. For example, as shown in fig. 4, a damper 3 mounting hole is provided in the boss 13, and the damper 3 base is mounted on the boss 13 by a damper mounting bolt 31, a damper lock nut 32, and a damper washer 33. The mounting orientation of the damper 3 with respect to the swing arm body 1 is selected according to the size of the mounting space, the mounting manner of the wheel, and the like, for example, in the first embodiment, the damper 3 is located between the swing arm body 1 and the wheel cover 5, and in the second embodiment, the damper 3 is located on the side of the swing arm body 1 facing away from the wheel cover 5.

Example one

The present embodiment will be described by taking an independent suspension non-driving wheel swing arm as an example.

As shown in fig. 5, the other end of the swing arm body 1 is provided with a wheel axle mounting counterbore, a wheel axle 4 is arranged in the wheel axle mounting counterbore in an interference fit manner, the wheel axle 4 is provided with a rotation limiting plane 41 for limiting the rotation of the wheel axle 4 around the axis thereof, and further, the wheel axle 4 and the swing arm body 1 are fixedly connected through a locking member (for example, an axle fixing bolt 42).

As shown in fig. 1 and 2, a plurality of wheel house mounting points for fixing to the wheel house 5 are provided on the swing arm body 1 at the same end as the wheel axle 4. For example, one wheel cover mounting bolt, referred to as a first wheel cover mounting bolt 51 and a second wheel cover mounting bolt 52, is respectively disposed on the upper side and the right side of the wheel axle mounting counterbore, one wheel cover mounting bolt, referred to as a third wheel cover mounting bolt 53, is disposed between the damper mounting hole and the bush mounting hole, and the wheel cover 5 is mounted and fixed on the swing arm body 1 by the three wheel cover mounting bolts.

Example two

The present embodiment will be described taking the independent suspension driving force swing arm as an example.

As shown in fig. 6, 7 and 9, the other end of the swing arm body 1 extends to form a plate-shaped structure 14, one side of the plate-shaped structure 14 is provided with a concave arc edge for avoiding the driving motor 6, and the plate-shaped structure 14 is provided with a plurality of mounting points for mounting the driving motor 6 or mounting the driving motor 6 and the wheel cover 5. The mounting points are distributed on the plate-shaped structure 14 in a C shape, so that the stress of each mounting point is uniform, the mounting is firm, and the mounting safety and stability of the driving motor 6 are improved. Among the plurality of mounting points, a part of the mounting points are used for mounting the driving motor 6, and another part of the mounting points are used for mounting the wheel cover 5 (in the same way as the concave arc-shaped edge, in view of the existence of the driving motor 6, the wheel cover 5 needs to be correspondingly provided with an avoidance gap for mounting the motor, for example, a circular gap, so that the wheel cover 5 wraps the driving motor 6 in a C shape). In this embodiment, two sets of mounting sets for mounting the driving motor 6 are provided, each set of mounting set includes two corresponding upper and lower mounting points, which are respectively a first motor mounting bolt 61, a second motor mounting bolt 62, a third motor mounting bolt 63 and a fourth motor mounting bolt 64, a wheel cover mounting bolt is provided on the upper left side of the first motor mounting bolt 61 and is referred to as a fourth wheel cover mounting bolt 54, a wheel cover mounting bolt is provided on the lower right side of the third motor mounting bolt 63 and is referred to as a fifth wheel cover mounting bolt 55, and a wheel cover mounting bolt is provided between the damper mounting hole and the bushing mounting hole and is referred to as a sixth wheel cover mounting bolt 56. As shown in fig. 10 and 11, a reinforcing rib 15 is respectively arranged between the first motor mounting bolt 61 and the second motor mounting bolt 62, and between the third motor mounting bolt 63 and the fourth motor mounting bolt 64, and the reinforcing rib 15 is used for transmitting the bearing capacity between the two mounting points, so that the bearing capacity is uniformly distributed on the swing arm body 1, and the strength of the swing arm body 1 is increased. In addition, as shown in fig. 7 and 8, a wheel locking nut 65 is provided on the left output shaft of the driving motor 6, and the wheel locking nut 65 is used for being fixedly locked with the wheel.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims (10)

1. An independent suspension swing arm comprises a swing arm body, a bushing and a shock absorber, and is characterized in that the bushing is arranged at one end of the swing arm body, and the shock absorber is arranged between two ends of the swing arm body.

2. The independent suspension swing arm of claim 1 wherein the swing arm body is provided with a plurality of lightening holes.

3. The independent suspension swing arm of claim 1 wherein the bushing comprises a bushing inner sleeve, a rubber sleeve and a bushing outer sleeve arranged in sequence.

4. The independent suspension swing arm of claim 1 wherein a downward boss is provided in the middle of the swing arm body for mounting the shock absorber.

5. The independent suspension swing arm of claim 1 wherein a plurality of wheel cover mounting points are provided on the swing arm body for securing to a wheel cover.

6. The independent suspension swing arm of claim 1, wherein the other end of the swing arm body is provided with a wheel axle mounting counter bore, a wheel axle is arranged in the wheel axle mounting bore in an interference fit manner, and the wheel axle is provided with a rotation limiting plane for limiting the wheel axle to rotate around the axle center.

7. The independent suspension swing arm of claim 6 wherein the axle and the swing arm body are fixedly coupled by a retaining member.

8. The independent suspension swing arm of claim 1, wherein the other end of the swing arm body extends to form a plate-shaped structure, one side of the plate-shaped structure is provided with a concave arc-shaped edge for avoiding a driving motor, and the plate-shaped structure is provided with a plurality of mounting points for mounting the driving motor or mounting the driving motor and a wheel cover.

9. An independent suspension swing arm according to claim 8 wherein a plurality of reinforcing bars are provided between the mounting points.

10. The independent suspension swing arm of claim 8 wherein the mounting points are distributed in a "C" shape on the plate-like structure.

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