CN205573523U - Boss assembly behind longitudinal wall behind automobile - Google Patents

Abstract

The utility model provides a rear axle joint assembly of the rear trailing arm of an automobile. The rear axle joint assembly of the automobile rear trailing arm includes a rear longitudinal arm, a rear axle joint web, a wheel hub unit mounting support and a caliper bracket. A drive shaft hole is provided on the arm, a first through hole is provided on the web of the rear hub, a second through hole is provided on the caliper bracket, a third through hole is provided on the hub unit mounting support, The drive shaft hole, the first through hole, the second through hole and the third through hole are connected in sequence in the axial direction, and the wheel speed sensor mounting seat for mounting the wheel speed sensor is provided on the side wall of the hub unit mounting support , the wheel speed sensor mounting seat communicates with the third through hole. The automobile rear trailing arm rear axle joint assembly can be suitable for four-wheel drive automobiles. Moreover, the wheel speed sensor is independently installed on the wheel speed sensor mounting seat of the wheel hub unit mounting support, which is more convenient for installation and maintenance.

Description

Rear axle joint assembly of rear trailing arm of automobile

technical field

The utility model relates to a rear axle joint assembly structure of a rear trailing arm, in particular to an automobile rear trailing arm rear axle joint assembly, which belongs to the technical field of automobile suspension.

Background technique

The existing automobile four-link or five-link rear suspension generally adopts a cast iron rear axle joint and a stamped sheet metal rear trailing arm, and the two are connected by bolts. Brackets or bearings connecting the rear upper swing arm, toe adjustment lever, rear lower swing arm, hub unit and calipers are processed on the rear axle joint.

However, the rear axle joint casted integrally by the nodular cast iron process has a large weight and high cost, which is not conducive to the lightweight of the vehicle.

The Chinese patent application with the application number CN201520017472.8 discloses a rear trailing arm assembly, the rear shaft joint includes a tie rod mounting support and a hub unit mounting support; a hub unit inner side is welded on the hub unit mounting support The inner side plate of the hub unit is welded to the mounting support of the tie rod, and the mounting surface of the mounting support of the hub unit faces the rear hub assembly. In the rear trailing arm assembly, the tie rod mounting support is made of stamped sheet metal, while the wheel hub unit mounting support is made of cast iron or forged steel. Therefore, the rear axle joint is not a whole piece of cast iron, which can reduce the weight of the rear trailing arm assembly , which is conducive to the lightweight of the car.

However, there is no installation position for the wheel speed sensor on the rear trailing arm assembly, so the rear trailing arm assembly can only use the in-line integrated wheel speed sensor, that is, the probe of the in-line integrated wheel speed sensor is inserted in the axial direction The center hole of the mounting bracket of the hub unit, so that the in-line integrated wheel speed sensor will occupy the space of the drive shaft hole on the rear trailing arm, because in a four-wheel drive vehicle, the drive shaft needs to pass through the drive shaft on the rear trailing arm Holes and the center hole of the mounting bracket of the hub unit make it difficult for the rear trailing arm assembly to be suitable for four-wheel drive vehicles. Moreover, the installation and maintenance of the in-line integrated wheel speed sensor are relatively difficult.

Utility model content

The technical problem to be solved by the utility model is that the in-line integrated wheel speed sensor in the existing rear trailing arm assembly will occupy the space of the drive shaft hole on the rear trailing arm, making it difficult to apply the rear trailing arm assembly The invention relates to the defect of four-wheel drive automobile, and provides an automobile rear trailing arm rear axle joint assembly.

The technical solution adopted by the utility model to solve the problems of the technologies described above is as follows:

Provided is an automobile rear trailing arm rear axle joint assembly, comprising a rear trailing arm, a rear axle joint web, a wheel hub unit mounting support and a caliper bracket, and the rear axle joint web is connected to the transverse joint at one end of the rear trailing arm On the outer side, the caliper bracket is connected to the lateral outer side of the rear axle joint web, the hub unit mounting support is connected to the lateral outer side of the caliper bracket, and the rear trailing arm is provided with a drive shaft hole. A first through hole is provided on the web of the rear shaft joint, a second through hole is provided on the caliper bracket, a third through hole is provided on the mounting support of the hub unit, the drive shaft hole, the first through hole , the second through hole and the third through hole are connected in sequence in the axial direction, and the wheel speed sensor mounting seat for mounting the wheel speed sensor is provided on the side wall of the hub unit mounting support, and the wheel speed sensor mounting seat is connected with the first The three through holes are connected.

Further, the wheel speed sensor mounting seat is formed with a wheel speed sensor mounting surface, and the wheel speed sensor mounting seat is provided with a wheel speed sensor mounting hole arranged radially along the third through hole; the wheel speed sensor mounting hole One end passes through the mounting surface of the wheel speed sensor, and the other end communicates with the third through hole.

Further, the wheel speed sensor mounting seat is provided with a wheel speed sensor fixing hole for fixing the wheel speed sensor housing.

Further, a plurality of sleeves are connected between the rear trailing arm and the web of the rear hub.

Further, a fourth through hole is opened on the rear trailing arm corresponding to one end of the bushing, a fifth through hole is opened on the rear hub web corresponding to the other end of the bushing, and the caliper bracket A sixth through hole is opened at the position corresponding to the fifth through hole, and a seventh through hole is opened at the position corresponding to the sixth through hole on the hub unit mounting support. The fourth through hole, sleeve , the fifth through hole, the sixth through hole and the seventh through hole are coaxially arranged and communicated in sequence in the axial direction.

Further, the rear longitudinal arm is provided with a lightening hole.

Further, the rear axle joint assembly of the rear trailing arm of the automobile also includes a shock absorber bracket connected between the rear trailing arm and the web of the rear axle joint; A convex hull is formed on one side of the web of the shaft joint, and a shock absorber installation hole is provided in the middle of the convex hull, and a welding nut coaxial with the shock absorber installation hole is provided on the shock absorber bracket.

Further, a rear upper swing arm support is provided on the rear axle joint web, and the rear upper swing arm support includes a first side arm and a second side arm, and the first side arm and the second side arm The joint is provided with a first slot.

Further, the rear lower swing arm support is provided on the web of the rear hub, and the rear lower swing arm support includes a third side arm and a fourth side arm, and the third side arm and the fourth side arm are connected There is a second slot.

Further, the rear axle joint web is provided with a rear toe adjustment rod support, and the rear toe adjustment rod support includes a fifth side arm and a sixth side arm, and the fifth side arm and the sixth side arm A third slot is provided at the junction of the side arms.

The rear axle joint assembly of the automobile rear trailing arm of the utility model, the driving shaft hole on the rear trailing arm, the first through hole on the rear axle joint web, the second through hole on the caliper bracket and the hub unit mounting support The third through hole of the hub unit is communicated in sequence in the axial direction, and the wheel speed sensor mounting seat connected with the third through hole is provided on the side wall of the hub unit mounting support. When assembling, the probe of the wheel speed sensor passes through the wheel speed sensor mounting seat and extend into the third through hole, therefore, the wheel speed sensor will not occupy the space of the drive shaft hole of the rear trailing arm, and the drive shaft of the four-wheel drive vehicle can pass through the drive shaft hole, the first through hole, the second through hole and the The third through hole makes the rear axle joint assembly of the rear trailing arm of the automobile suitable for four-wheel drive automobiles. Moreover, the wheel speed sensor is independently installed on the wheel speed sensor mounting seat of the wheel hub unit mounting support, which is more convenient for installation and maintenance.

Description of drawings

Fig. 1 is an exploded view of an automobile rear trailing arm rear axle joint assembly provided by an embodiment of the present invention.

Fig. 2 is a schematic structural view of the hub unit mounting support of the rear axle joint assembly of the rear trailing arm of the automobile provided by an embodiment of the utility model.

Fig. 3 is an assembly drawing of the rear axle joint assembly of the rear trailing arm of the automobile provided by an embodiment of the utility model.

Fig. 4 is a partial sectional view (enlarged view) along the direction A-A in Fig. 3 .

Fig. 5 is a sectional view (enlarged view) along the direction B-B in Fig. 3 .

Fig. 6 is a structural schematic diagram of the rear axle joint web plate of the rear axle joint assembly of the automobile rear trailing arm provided by an embodiment of the utility model.

The reference signs in the accompanying drawings of the description are as follows:

1. Rear trailing arm bushing; 2. Bushing sleeve; 3. Rear trailing arm; 31. Drive shaft hole; 32. Fourth through hole; 33. Upper flanging; 34. Lower flanging; 35. Upper rib ; 36, lower reinforcing rib; 37, weight-reducing hole; 38, convex hull; 39, shock absorber installation hole; 4, rear shaft joint web; 41, the first through hole; 42, the fifth through hole; 43, Rear upper swing arm support; 431, first side arm; 432, second side arm; 433, first slot; 434, first connecting hole; 435, nut; 44, rear lower swing arm support; 441, the first Three side arms; 442, the fourth side arm; 443, the second slot; 45, the rear toe adjustment rod support; 451, the fifth side arm; 452, the sixth side arm; 453, the third slot; 5 , shock absorber bracket; 51, welding nut; 6, wheel hub unit mounting support; 60, wheel speed sensor mounting seat; 61, third through hole; 62, wheel speed sensor mounting hole; 63, wheel speed sensor mounting surface; 64. Wheel speed sensor fixing hole; 65. Seventh through hole; 7. Caliper bracket; 71. Second through hole; 72. Sixth through hole; 73. Bolt hole; 8. Sleeve; 9. Wheel speed sensor; 91. Shell; 92. Probe.

detailed description

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1 and Figure 3, the automobile rear trailing arm rear axle joint assembly provided by an embodiment of the utility model includes a rear trailing arm bushing 1, a bushing sleeve 2, a rear trailing arm 3, and a rear axle joint web 4. Shock absorber bracket 5, hub unit mounting bracket 6 and caliper bracket 7.

The rear axle joint web 4 is stamped sheet metal, the hub unit mounting support 6 and the caliper bracket 7 are cast iron or forged steel parts. Compared with the traditional cast iron integral rear axle joint, the rear trailing arm rear axle joint assembly of the automobile The weight can be reduced by about 20%, and the cost can be reduced by about 25%.

As shown in Figures 1 and 3, the rear axle joint web 4 is welded on the lateral outer side of the larger end of the rear longitudinal arm 1, and the caliper bracket 7 is welded on the transverse direction of the rear axle joint web 4 On the outside, the hub unit mounting support 6 is welded on the lateral outer side of the caliper bracket 7 , and the shock absorber bracket 5 is welded between the rear trailing arm 3 and the rear hub web 4 . In this way, the rear longitudinal arm 3, the rear hub web 4, the shock absorber bracket 5, the caliper bracket 7 and the hub unit mounting support 6 are welded together.

As shown in Figure 1, the rear longitudinal arm 3 is provided with a drive shaft hole 31, the rear hub web 4 is provided with a first through hole 41, and the caliper bracket 7 is provided with a second through hole 71 , the hub unit mounting support 6 is provided with a third through hole 61 . The drive shaft hole 31 , the first through hole 41 , the second through hole 71 and the third through hole 61 are arranged coaxially and have equal inner diameters. After the rear longitudinal arm 3, the rear hub web 4, the shock absorber bracket 5, the caliper bracket 7, and the hub unit mounting support 6 are welded together, the drive shaft hole 31, the first through hole 41, and the second through hole 71 and the third through hole 61 are communicated in sequence in the axial direction.

As shown in FIG. 1 and FIG. 3 , the bushing sleeve 2 is welded on the smaller end of the rear trailing arm 3 , and the rear trailing arm bushing 1 is press-fitted in the bushing sleeve 2 . The rear trailing arm bushing 1 is connected to the vehicle body side member by bolts through the inner core hole.

As shown in 1, four sleeves 8 are arranged between the rear longitudinal arm 3 and the rear hub web 4 , and the sleeves 8 are welded on the surface of the rear hub web 4 close to the rear longitudinal arm 3 .

As shown in Figures 2 to 4, a wheel speed sensor mounting seat 60 for mounting the wheel speed sensor 9 is provided on the side wall of the hub unit mounting support 6, and the wheel speed sensor mounting seat 60 is provided along the third channel. The hole 61 is a wheel speed sensor mounting hole 62 arranged radially, the wheel speed sensor mounting seat 60 is formed with a wheel speed sensor mounting surface 63, and one end of the wheel speed sensor mounting hole 62 passes through the wheel speed sensor mounting surface 63 , the other end of the wheel speed sensor installation hole 62 communicates with the third through hole 61 . The wheel speed sensor mounting base 60 is provided with a wheel speed sensor fixing hole 64 for fixing the housing 91 of the wheel speed sensor 9 . The wheel speed sensor fixing hole 64 is a threaded hole. During installation, the probe 92 of the wheel speed sensor 9 is inserted into the wheel speed sensor installation hole 62 from the outside to the inside. The sensor mounting surface 63 is bonded, and then the screw is screwed into the wheel speed sensor fixing hole 64, that is, the wheel speed sensor 9 is installed on the wheel speed sensor mounting seat 60 of the wheel hub unit mounting support 6. Only part of the wheel speed sensor 9 and the mounting support 6 of the hub unit are cut in Fig. 4 .

As shown in FIG. 1 , four fourth through holes 32 are opened at one end of the rear longitudinal arm 3 corresponding to the four bushings 8 , and the other end of the rear axle joint web 4 corresponding to the four bushings 8 Four fifth through holes 42 are opened at one end, and the sleeve 8 is welded on the edge of the fifth through holes 42 . A sixth through hole 72 is opened on the caliper bracket 7 corresponding to the fifth through hole 42, and a seventh through hole 65 is opened on the hub unit mounting support 6 corresponding to the sixth through hole 72. , the fourth through hole 32 , the sleeve 8 , the fifth through hole 42 , the sixth through hole 72 and the seventh through hole 65 are coaxially arranged and communicated in sequence in the axial direction. When installing the hub unit, insert the long screw from the outside of the rear trailing arm 3, and the long screw passes through the fourth through hole 32 on the rear trailing arm 3, the bushing 8, and the fifth through hole on the web 4 of the rear axle joint in sequence 42. The sixth through hole 72 on the caliper bracket 7 and the seventh through hole 62 on the hub unit mounting support 6, and then screw the tail end of the long screw passing through the hub unit mounting support 6 into the automobile hub unit in the threaded hole. In this way, the hub unit mounting support 6 is connected to the rear trailing arm 3 and the rear hub web 4 through the bushing 8, the rear longitudinal arm 3 and the rear hub web 4 can strengthen the hub unit mounting support 6, relatively Because the existing wheel hub unit mounting support is only connected to the shaft joint (not connected to the rear trailing arm), the mounting strength of the wheel hub unit mounting support 6 is increased, which improves the mounting strength of the wheel hub unit. Moreover, compared to the scheme of installing the wheel speed sensor 9 on the rear hub web 4 in the form of a stamped sheet metal, in this embodiment, since the hub unit mounting support 6 is a cast iron or forged steel, after machining , the wheel speed sensor mounting hole 62 and the wheel speed sensor mounting surface 63 with high precision can be obtained, therefore, the wheel speed sensor mounting seat 60 of the hub unit mounting support 6 can provide higher wheel speed sensor mounting accuracy.

In addition, the bushing 8 is connected between the rear trailing arm 3 and the web of the rear axle joint, and the bushing 8 can ensure the bolt connection space between the rear trailing arm 3 and the hub unit without increasing the stamping depth of the rear trailing arm 3 .

As shown in Figures 1 and 5, an upper flange 33 and a lower flange 34 are respectively formed on both sides of the rear longitudinal arm 3 in the height direction. A lower rib 36 is formed in the inner position. As shown in FIG. 5 , the rear longitudinal arm 3 has an M-shaped section at the upper rib 35 and the lower rib 36 . The widths of the ribs 35 and the lower ribs 36 are gradually widened from the end of the rear trailing arm with a smaller area to the end with a larger area. In this way, the rear trailing arm can be significantly improved on the basis of making full use of the material of the rear trailing arm. The anti-bending and torsional performance improves the reliability of the rear trailing arm and even the car. At the same time, the frequency of the first-order bending mode and the frequency of the second-order torsional mode are also significantly improved, which improves the NVH quality of the car.

In addition, the rear longitudinal arm 3 is provided with three lightening holes 37 between the reinforcing ribs 35 and the lower reinforcing ribs 36, and the three lightening holes 37 are oblong holes. Under the premise of strength, the weight of parts is reduced and the utilization rate of materials is improved.

As shown in Figure 1, a convex hull 38 is formed on the side of the rear longitudinal arm 3 away from the rear hub web 4, and a shock absorber mounting hole 39 is provided in the middle of the convex hull 38, and the shock absorber bracket 5 is provided with a welding nut 51 coaxial with the shock absorber mounting hole 39. The shock absorber bracket 5 is connected with the rubber bush of the automobile shock absorber through a screw rod threaded with a welding nut 51 .

As shown in FIG. 1 and FIG. 6 , the rear axle joint web 4 is provided with a substantially U-shaped rear upper swing arm support 43 , a rear lower swing arm support 44 and a rear toe-in adjustment rod support 45 . As shown in Figure 6, the rear upper swing arm support 43 includes a first side arm 431 and a second side arm 432, and a substantially U-shaped The first slot 433 . The first side arm 431 is provided with a first connecting hole 434, and the second side arm 432 is provided with a second connecting hole (covered by other parts in FIG. 6 , not shown), and the outer side of the second connecting hole is welded with a nut 435 . In this way, the rear upper swing arm support 43 is connected to the bush of the rear upper swing arm through the threaded rod connected with the nut 435 . The first slot 433 is connected between the first side arm 431 and the second side arm 432, which can reduce the rigidity of the rear upper swing arm support 43, so that the first side arm 431 and the second side arm 432 are tightened when the screw is tightened. It can be deformed and clamped at both ends of the inner tube of the bushing of the rear upper swing arm, so as to avoid loosening and abnormal noise of the bushing of the rear upper swing arm, and improve the durability of the rear axle joint web 4 .

Similarly, the rear lower swing arm support 44 includes a third side arm 441 and a fourth side arm 442, and a substantially U-shaped second slot is provided at the junction of the third side arm 441 and the fourth side arm 442. 443. The support 45 of the toe-rear adjusting rod includes a fifth side arm 451 and a sixth side arm 452, and a generally U-shaped third slot 453 is provided at the junction of the fifth side arm 451 and the sixth side arm 452. .

The bushing of the rear lower swing arm support 44 and the rear lower swing arm, the rear toe-in adjusting rod support 45 and the bushing of the rear toe-in adjusting rod are all used with the rear upper swing arm support 43 and the bushing of the rear upper swing arm The connection is similar, and the functions of the second slot 443 and the third slot 453 are similar to those of the first slot 433 , which will not be repeated here.

As shown in FIG. 1 , two bolt holes 73 for connecting and fixing the brake caliper are also provided on the caliper bracket 7 .

The rear axle joint assembly of the automobile rear trailing arm of the above-mentioned embodiment of the utility model, the driving shaft hole on the rear trailing arm, the first through hole on the web of the rear axle joint, the second through hole on the caliper bracket and the installation of the wheel hub unit The third through hole on the support is connected in sequence in the axial direction, and the wheel speed sensor mounting seat connected with the third through hole is provided on the side wall of the hub unit mounting support. When assembling, the probe of the wheel speed sensor passes through the wheel speed sensor. The sensor mounting seat extends into the third through hole, so compared with the rear trailing arm assembly using the in-line integrated wheel speed sensor, it has the following advantages: the wheel speed sensor will not occupy the space of the drive shaft hole of the rear trailing arm , the drive shaft of the four-wheel drive vehicle can pass through the drive shaft hole, the first through hole, the second through hole and the third through hole, so that the rear trailing arm rear axle joint assembly of the vehicle can be suitable for the four-wheel drive vehicle. Moreover, the wheel speed sensor is independently installed on the wheel speed sensor mounting seat of the wheel hub unit mounting support, which is more convenient for installation and maintenance.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. joint assembly after an automobile rear trailing arm, it is characterised in that include rear trailing arm, rear joint web, Hub erection support and caliper bracket, described rear joint web connects the horizontal of trailing arm one end in the rear Outside, described caliper bracket is connected to the lateral outer side of described rear joint web, and described hub is installed and propped up Seat is connected to the lateral outer side of described caliper bracket, and described rear trailing arm is provided with drive shaft hole, described rear joint Web is provided with the first through hole, and described caliper bracket is provided with the second through hole, described hub erection support Be provided with third through-hole, described drive shaft hole, the first through hole, the second through hole and third through-hole axially on successively Connection, the sidewall of described hub erection support is provided with the wheel speed sensors for installing wheel speed sensors Mounting seat, described wheel speed sensors mounting seat connects with third through-hole.

Joint assembly after automobile rear trailing arm the most according to claim 1, it is characterised in that described wheel speed Sensor installation seat is formed with wheel speed sensors installed surface, and described wheel speed sensors mounting seat is provided with along the 3rd The wheel speed sensors installing hole that through hole is radially arranged；One end of described wheel speed sensors installing hole passes wheel speed and passes Sensor installed surface, the other end connects with third through-hole.

Joint assembly after automobile rear trailing arm the most according to claim 2, it is characterised in that described wheel speed Sensor installation seat is provided with the wheel speed sensors fixing hole for fixing wheel speed sensor outer housing.

Joint assembly after automobile rear trailing arm the most according to claim 1, it is characterised in that vertical after described Connect between arm and rear joint web and have multiple sleeve pipe.

Joint assembly after automobile rear trailing arm the most according to claim 4, it is characterised in that vertical after described On arm, fourth hole is offered in the one end corresponding to described sleeve pipe, corresponding to described sleeve pipe on described rear joint web The other end offer fifth hole, described caliper bracket offers the 6th corresponding to the position of described fifth hole Through hole, on described hub erection support, the 7th through hole, institute are offered in the position corresponding to described clematis stem hole State fourth hole, sleeve pipe, fifth hole, clematis stem hole and the 7th through hole to be coaxially disposed and the most successively Connection.

Joint assembly after automobile rear trailing arm the most according to claim 1, it is characterised in that vertical after described Lightening hole is offered on arm.

Joint assembly after automobile rear trailing arm the most according to claim 1, it is characterised in that described automobile After rear trailing arm joint assembly also include shock absorber support, described shock absorber support connect in the rear trailing arm and after Between joint web；Described rear trailing arm deviates from the side of rear joint web and is formed with convex closure, in described convex closure Portion is provided with shock absorber mounting hole, and described shock absorber support is provided with the welded nut coaxial with shock absorber mounting hole.

8. according to joint assembly after the automobile rear trailing arm described in claim 1-7 any one, it is characterised in that Described rear joint web is provided with rear upper swing arm support, and described rear upper swing arm support includes the first side arm and second Side arm, described first side arm and the second side arm joint are provided with the first fluting.

9. according to joint assembly after the automobile rear trailing arm described in claim 1-7 any one, it is characterised in that Described rear joint web is provided with rear lower swing arm bearing, and described rear lower swing arm bearing includes the 3rd side arm and the 4th Side arm, described 3rd side arm and the 4th side arm joint are provided with the second fluting.

10. according to joint assembly after the automobile rear trailing arm described in claim 1-7 any one, it is characterised in that Described rear joint web is prenex adjusting rod bearing after being provided with, and described rear prenex adjusting rod bearing includes the 5th side Arm and the 6th side arm, described 5th side arm and the 6th side arm joint are provided with the 3rd fluting.