CN205970676U - Back boss and have automotive suspension of this back boss - Google Patents

Abstract

A rear axle joint, including a rear axle joint body, on which a wheel hub bearing installation hole is arranged, and on the rear axle joint body, a trailing arm connection support connected with a trailing arm and a caliper connected with a caliper Mounting hole, the caliper mounting hole is located between the hub bearing mounting hole and the trailing arm connection support, the trailing arm connection support is provided with a trailing arm mounting hole, the trailing arm mounting hole includes the first trailing arm mounting hole, the second trailing arm mounting hole hole and the third trailing arm mounting hole, the projections of the first trailing arm mounting hole, the second trailing arm mounting hole and the third trailing arm mounting hole on the trailing arm connecting support are arranged in a triangle, and the first trailing arm mounting hole is located at the The distance between the second trailing arm mounting hole and the third trailing arm mounting hole is on the other side of the hub bearing mounting hole. The distance between the top of the three trailing arm mounting holes and the trailing arm connecting support.

Description

Rear axle joint and automobile suspension with the rear axle joint

technical field

The utility model relates to the field of automobile chassis structure, in particular to a rear axle joint and an automobile suspension with the rear axle joint.

Background technique

The rear axle joint is responsible for transmitting the wheel load to the vehicle body. It has a complex structure and is equipped with multiple suspension components to withstand variable loads. It is one of the most critical safety components in independent suspension.

In the prior art, in order to withstand variable loads, the rear axle joint needs higher self-strength. In addition, the rear axle joint generally needs to connect with the shock absorber, upper swing arm, trailing arm, and toe-in through different forms of connection structures. Multiple peripheral components such as the control arm and the lower swing arm are connected, so its own structure and connection method need to have a reasonable layout space and be able to meet the strength requirements of the automobile assembly.

The rear axle joint, especially the front rear axle joint of the caliper, since the caliper installation hole is located between the hub bearing installation hole and the trailing arm connection support, in turn, the distance between the trailing arm connection support and the wheel hub bearing installation hole is relatively large , so the layout space of the trailing arm will be limited to a certain extent, it is difficult to realize the large-span layout of the trailing arm, and it is difficult to make the trailing arm have high strength and rigidity.

In addition, with the continuous development of the automobile industry, automobiles have higher and higher requirements on the rigidity, strength and structure of the rear axle joint, but the design of the existing rear axle joint on the market is not reasonable, which limits the further development of the rear axle joint. ground application.

Utility model content

The purpose of the utility model is to provide a rear axle joint and an automobile suspension with the rear axle joint. The design of the rear axle joint is reasonable and can make the structure of the rear axle joint more stable on the basis of ensuring the layout requirements and structural strength. and compact.

The utility model provides a rear axle joint, which comprises a rear axle joint body, on which a wheel hub bearing mounting hole is arranged, and on the rear axle joint body, a trailing arm connection connected with a trailing arm is also provided. The support and the caliper installation hole connected with the caliper, the caliper installation hole is located between the hub bearing installation hole and the trailing arm connection support, the trailing arm connection support is provided with a trailing arm installation hole, the drag The arm is connected to the connecting support of the trailing arm through the trailing arm mounting hole, the trailing arm mounting hole includes a first trailing arm mounting hole, a second trailing arm mounting hole and a third trailing arm mounting hole, the first trailing arm mounting hole The projections of the trailing arm mounting hole, the second trailing arm mounting hole and the third trailing arm mounting hole on the trailing arm connecting support are arranged in a triangle, and the first trailing arm mounting hole is located at the second trailing arm The installation hole and the third trailing arm installation hole are opposite to the other side of the hub bearing installation hole, and the distance between the top of the first trailing arm mounting hole and the trailing arm connection support is greater than that of the first trailing arm. The distance between the top of the second trailing arm installation hole and the third trailing arm installation hole and the trailing arm connecting support.

Further, the first trailing arm mounting hole, the second trailing arm mounting hole and the third trailing arm mounting hole are arranged in an isosceles triangle with the first trailing arm mounting hole as the apex.

Further, the hub bearing installation hole is set on the plate surface of the rear axle joint body, and penetrates between the two plate surfaces of the rear axle joint body, on the rear axle joint body, along the A bearing fixing hole for fixing the bearing is provided in the circumferential direction of the hub bearing installation hole.

Further, a hub bearing installation hole cover plate is provided on the side of the rear axle joint body away from the bearing, and the hub bearing installation hole cover plate is detachably fixed on the rear axle joint body.

Further, the rear axle joint body is also provided with a toe control arm connecting portion, and the end of the toe control arm close to the rear axle joint body is provided with a connecting bush, and the toe control arm connecting portion includes The first lug and the second lug, the first lug is arranged on the rear axle joint body, the second lug is formed on the side wall of the trailing arm connecting support, the first lug and the second lug form an accommodating space, the width of the accommodating space is greater than the width of the connecting bush on the toe control arm, the connecting bush on the toe control arm The sleeve protrudes into the accommodating space and is connected with the rear axle joint body.

Further, the first lug, the second lug and the end of the toe control arm close to the rear hub are all provided with connecting holes, the connecting hole on the first lug is connected to the second lug. The positions of the connecting holes on the two lugs are compatible, and a bolt passes through the connecting holes on the first lug and the toe control arm in turn and extends into the connecting hole on the second lug, and the The toe control arm is fixed on the rear hub.

Further, the connecting hole of the first lug is also provided with an open steel sleeve, the open steel sleeve is provided with a gap passing through both ends of the open steel sleeve, and the open steel sleeve is arranged on the open steel sleeve through interference fit. into the connecting hole on the first ear.

Further, the rear axle joint body is also provided with a lower swing arm connecting portion connected with the lower swing arm, and a ball joint bush is arranged on the lower swing arm connecting portion.

Further, the rear axle joint is an integrally formed aluminum casting.

The utility model also provides an automobile suspension, including the rear axle joint provided by the utility model.

To sum up, the utility model provides three trailing arm installation holes and makes the three trailing arm mounting holes have different heights, which is beneficial to improve the strength and stiffness of the trailing arm and optimize the design space of the trailing arm. Furthermore, by setting the open steel sleeve, the occurrence of abnormal noise can be effectively prevented; by setting the detachable hub bearing installation hole cover, the same rear axle joint can be applied to four-wheel drive and two-wheel drive models, reducing mold opening costs .

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

Fig. 1 is a structural schematic diagram of the rear axle joint provided by the embodiment of the utility model.

Fig. 2 is a schematic diagram of the connection between the rear axle joint and peripheral components in Fig. 1 .

Fig. 3 is a top view of the rear axle joint in Fig. 1 .

Fig. 4 is a schematic cross-sectional view of IV-IV direction in Fig. 3 .

Fig. 5 is a schematic structural diagram of the connection between the rear axle joint and the trailing arm in Fig. 1 .

Fig. 6 is a schematic diagram of the connection between the rear axle joint and the toe-in control arm in Fig. 1 .

FIG. 7 is a schematic cross-sectional view along VII-VII direction in FIG. 3 .

Fig. 8 is a schematic structural diagram of the connecting bush in Fig. 6 .

FIG. 9 is a schematic cross-sectional view along the direction IX-IX in FIG. 3 .

detailed description

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

The utility model provides a rear axle joint and an automobile suspension with the rear axle joint. The rear axle joint has a reasonable design, can have a reasonable layout space, and has higher strength after being combined with a plurality of peripheral components. Fig. 1 is a schematic structural diagram of the rear axle joint provided by the embodiment of the present invention, and Fig. 2 is a structural schematic diagram of the connection between the rear axle joint and peripheral components in Fig. 1, as shown in Fig. 1 and Fig. 2, the rear axle provided by the present utility model The integrally formed aluminum casting includes a rear axle joint body 10, the rear axle joint body 10 is provided with a wheel hub bearing mounting hole 11 connected with the wheel hub bearing, and the rear axle joint body 10 is formed with a shock absorber 91. The shock absorber installation hole 20, the upper swing arm connection part 30 connected with the upper swing arm 92, the trailing arm connection support 40 connected with the trailing arm 93, the toe control arm connection part 50 connected with the toe control arm 94, The lower swing arm connecting portion 60 connected to the lower swing arm 95 and the caliper mounting hole 70 connected to the caliper, the caliper mounting hole 70 is located between the hub bearing mounting hole 11 and the trailing arm 93 mounting plate, that is, the caliper is in front.

Fig. 3 is a top view of the rear shaft joint in Fig. 1, and Fig. 4 is a schematic cross-sectional view of IV-IV direction in Fig. 3 . As shown in Figure 3 and Figure 4, the hub bearing mounting hole 11 is arranged on the plate surface of the rear axle joint body 10, and penetrates between the two plate surfaces of the rear axle joint body 10, on the rear axle joint body 10, Along the circumferential direction of the hub bearing installation hole 11 , a fixing screw hole 12 for fixing the hub bearing is provided, and the hub bearing is fixed in the hub bearing installation hole 11 through the fixing screw hole 12 . A wheel hub bearing installation hole cover 13 is provided on the side of the rear axle joint body 10 away from the hub bearing, and the wheel hub bearing installation hole cover 13 is detachably fixed on the rear axle joint body 10 by bolts. When the rear axle joint is applied to a two-wheel drive vehicle, the hub bearing installation hole cover plate 13 is fixed on the rear axle joint, and a wheel speed sensor can also be installed on the rear axle joint body 10; when the rear axle joint is applied to a four-wheel drive vehicle When going up, the hub bearing mounting hole 11 can be removed. Therefore, the setting of the hub bearing mounting hole cover plate 13 can be commonly used in four-wheel drive and two-wheel drive models, reducing the cost of mold opening.

Fig. 5 is a schematic structural diagram of the connection between the rear axle joint and the trailing arm in Fig. 1. As shown in Fig. 1, Fig. 2 and Fig. 5, a trailing arm mounting hole 41 for connecting the trailing arm 93 is provided on the trailing arm connecting support 40 , the trailing arm 93 is connected to the trailing arm connecting support 40 through the trailing arm mounting hole 41 . The trailing arm mounting hole 41 includes a first trailing arm mounting hole 411, a second trailing arm mounting hole 412 and a third trailing arm mounting hole 413. The three trailing arm mounting holes 411, 412, 413 are located on the trailing arm connecting support 40 plate surface. The projection on is arranged in a triangle. The first trailing arm mounting hole 411 is located on the other side of the line connecting the second trailing arm mounting hole 412 and the third trailing arm mounting hole 413 relative to the hub bearing mounting hole 11, and the top of the first trailing arm mounting hole 411 is connected to the trailing arm. The distance between the board surfaces of the support 40 is greater than the distance between the top of the second trailing arm installation hole 412 and the third trailing arm installation hole 413 and the board surface of the trailing arm connecting support 40, that is, the first trailing arm installation hole The height of 411 is greater than the height of the second trailing arm installation hole 412 and the third trailing arm installation hole 413 .

Among the three trailing arm mounting holes 41 provided by the utility model, the height of the first trailing arm mounting hole 411 is higher than the height of the second trailing arm mounting hole 412 and the third trailing arm mounting hole 413, as shown in the figure As shown in 5, at this time, the plate surface at one end of the trailing arm 93 connected to the trailing arm connecting support 40 can adopt a bow-shaped structure, which is conducive to improving the installation strength and rigidity of the trailing arm 93 and optimizing the design space of the trailing arm 93.

More specifically, the projections of the first trailing arm mounting hole 411 , the second trailing arm mounting hole 412 and the third trailing arm mounting hole 413 on the trailing arm connecting support 40 are as follows: Isosceles triangle arrangement of vertices.

Fig. 6 is a schematic structural diagram of the connection between the rear axle joint and the toe-in control arm in Fig. 1, as shown in Fig. 1, Fig. 2 and Fig. 6, the end of the toe-in control arm 94 close to the rear axle joint body 10 is provided with a connecting bush 941 The toe control arm connection part 50 includes a first lug 51 and a second lug 52, the first lug 51 is arranged on the rear axle joint body 10, and the second lug 52 is formed on the side of the trailing arm connecting support 40 On the wall, an accommodating space 53 is formed between the first lug 51 and the second lug 52, and the width of the accommodating space 53 is greater than the width of the connecting bush 941 on the toe control arm 94, that is, the accommodating space 53 and the front The connecting bush 941 on the toe control arm 94 is clearance fit, and the connecting bush 941 on the toe control arm 94 extends into the accommodating space 53 and is connected with the rear axle joint body 10 . Specifically, the first lug 51, the second lug 52, and the connecting bush 941 of the toe control arm 94 are all provided with a connecting hole 54, and the connecting hole 54 on the first lug 51 is connected to the connecting bush 941 on the second lug 52. Adapt to the position of the connecting hole 54, a bolt passes through the first lug 51 and the connecting bush 941 in turn and extends into the connecting hole 54 on the second lug 52, and fixes the toe control arm 94 on the rear hub superior.

Further, Fig. 7 is a schematic cross-sectional view in the direction of VII-VII in Fig. 3, and Fig. 8 is a schematic structural view of the connecting bush in Fig. 6, as shown in Fig. 2, Fig. 6, Fig. 7 and Fig. 8, the first lug The connecting hole 54 on the 51 is also provided with an open steel sleeve 55, and the open steel sleeve 55 is provided with a gap 56 that runs through both ends of the open steel sleeve 55, and the open steel sleeve 55 is press-fitted on the first lug 51 through interference fit. In the connecting hole 54.

In this embodiment, the double side lugs are used to connect with the toe control arm 94, the force on the toe control arm 94 will be transmitted to the first lug 51 and the second lug 52, the first lug 51 can withstand a large part of the bending moment, which greatly relieves the second lug 52, that is, the bending moment on the side of the trailing arm connecting support 40, and significantly improves the strength of the steering knuckle. Since the open steel sleeve 55 is provided with a gap 56, the deformation and sliding of the open steel sleeve 55 can be used to squeeze the inner tube of the bushing of the toe control arm 94 to ensure that the connecting bolts have sufficient pre-tightening force to achieve clamping. The role of the open steel sleeve 55 can effectively prevent the risk of loss of the pre-tightening force of the bolt due to the second lug 52 being difficult to deform. It can effectively prevent the connection from loosening and reduce the occurrence of abnormal noise.

FIG. 9 is a schematic cross-sectional view in the direction of IX-IX in FIG. 3 . As shown in FIG. 9 , further, a ball joint bushing 61 is provided at the connecting portion 60 of the lower swing arm.

To sum up, the utility model sets three trailing arm mounting holes and makes the three trailing arm mounting holes have different heights, which is conducive to improving the mounting strength and stiffness of the trailing arm and optimizing the design space of the trailing arm. Furthermore, by pressing the open steel sleeve, the bushing of the toe control arm can be effectively clamped, and the occurrence of abnormal noise can be effectively reduced; the same rear axle joint can be applied to four Drive and two-wheel drive models, reduce mold opening costs.

The utility model also provides an automobile suspension, including the above-mentioned rear axle joint. For other features of the automobile, please refer to the prior art, which will not be repeated here.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Content, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (10)

1. A rear axle joint, comprising a rear axle joint body (10), on which a wheel hub bearing mounting hole (11) is arranged, on the said rear axle joint body (10) also There is a trailing arm connection support (40) connected to the trailing arm (93) and a caliper mounting hole (70) connected to the caliper, and the caliper mounting hole (70) is located between the hub bearing mounting hole (11) and the dragging Between the arm connection support (40), it is characterized in that: the trailing arm connection support (40) is provided with a trailing arm mounting hole (41), and the trailing arm (93) passes through the trailing arm mounting hole ( 41) Connected with the trailing arm connecting support (40), the trailing arm mounting hole (41) includes the first trailing arm mounting hole (411), the second trailing arm mounting hole (412) and the third trailing arm mounting hole holes (413), the first trailing arm mounting hole (411), the second trailing arm mounting hole (412) and the third trailing arm mounting hole (413) are on the trailing arm connecting support (40) The projection of is arranged in a triangle, the first trailing arm mounting hole (411) is located on the line connecting the second trailing arm mounting hole (412) and the third trailing arm mounting hole (413) relative to the hub bearing installation On the other side of the hole (11), the distance between the top of the first trailing arm installation hole (411) and the trailing arm connecting support (40) is greater than that of the second trailing arm installation hole (412) and the third The distance between the top of the trailing arm mounting hole (413) and the trailing arm connection support (40). 2. The rear axle joint according to claim 1, characterized in that: the first trailing arm installation hole (411), the second trailing arm installation hole (412) and the third trailing arm installation hole (413) It is arranged in an isosceles triangle with the first trailing arm installation hole (411) as the apex. 3. The rear axle joint according to claim 1, characterized in that: the hub bearing installation hole (11) is set on the plate surface of the rear axle joint body (10) and penetrates through the rear axle joint Between the two plates of the body (10), on the rear hub body (10), a fixing screw hole (12) for fixing the hub bearing is provided along the circumference of the hub bearing installation hole (11). 4. The rear axle joint according to claim 3, characterized in that: on the side of the rear axle joint body (10) away from the bearing, there is also a wheel hub bearing installation hole cover plate (13), the wheel hub The bearing mounting hole cover plate (13) is detachably fixed on the rear shaft joint body (10). 5. The rear axle joint according to claim 1, characterized in that: the rear axle joint body (10) is also provided with a toe control arm connecting portion (50) for connecting with the toe control arm (94) , the end of the toe control arm (94) close to the rear axle joint body (10) is provided with a connecting bush (941), and the toe control arm connection part (50) includes a first lug (51) And the second lug (52), the first lug (51) is arranged on the rear axle joint body (10), and the second lug (52) is formed on the trailing arm connecting support (40) On the side wall of the first lug (51) and the second lug (52), an accommodating space (53) is formed, and the width of the accommodating space (53) is larger than that of the toe-in The width of the connecting bush (941) on the control arm (94), the connecting bush (941) on the toe control arm (94) protrudes into the accommodating space (53), and The rear axle joint bodies (10) are connected together. 6. The rear axle joint according to claim 5, characterized in that: the first lug (51), the second lug (52) and the toe control arm (94) are close to the rear One end of the shaft joint is provided with a connecting hole (54), and the connecting hole (54) on the first lug (51) is adapted to the position of the connecting hole (54) on the second lug (52) , the bolts sequentially pass through the first lug (51) and the connecting bushing (941) on the toe control arm (94) and extend into the connecting hole (54) on the second lug (52) ), the toe control arm (94) is fixed on the rear axle joint. 7. The rear axle joint according to claim 6, characterized in that: an open steel sleeve (55) is also provided in the connecting hole (54) of the first lug (51), and the open steel sleeve (55) ) is provided with a slit (56) that runs through both ends of the open steel sleeve (55), and the open steel sleeve (55) is arranged on the connecting hole (54) on the first lug (51) through interference fit Inside. 8. The rear axle joint according to claim 1, characterized in that: the rear axle joint body (10) is also provided with a lower swing arm connection part (60) connected with the lower swing arm (95), and the lower swing arm A spherical joint bushing (61) is press-fitted on the connecting portion (60). 9. The rear axle joint according to claim 1, characterized in that: the rear axle joint is an integrally formed aluminum casting. 10. An automobile suspension, characterized by comprising the rear axle joint according to any one of claims 1-9.