CN204451877U - For the wheel stand of multi link formula independent suspension system - Google Patents

Abstract

For a wheel stand for multi link formula independent suspension system, comprise rack body, rack body has wheel hub mounted portion, wheel hub mounted portion be provided with mandrel, mandrel be used for be connected with wheel nave, mandrel and rack body one-body molded.Mandrel and wheel stand can complete in same procedure, and process cost reduces, and can avoid both dimensional discrepancys owing to causing due to the difference of technique between different operation; And do not need other assembly process between both, reduce assembly cost.

Description

Wheel brackets for multi-link independent suspension systems

technical field

The utility model relates to the field of automobiles, in particular to a wheel bracket.

Background technique

The wheel bracket is an important part of the multi-link independent suspension system, which is used to connect the rear wheel suspension components and the wheel hub.

In the prior art, the wheel support and the wheel hub bearing are connected through a mandrel, and the mandrel is press-fitted into the wheel support. This approach has the following disadvantages:

One is that the wheel bracket and the mandrel are two different parts and are manufactured through different processes. The number of parts increases, the material is more used, and the manufacturing cost is high; size deviation between.

The second is that when in use, a process is required to assemble the wheel bracket and the mandrel, and when assembling, it is necessary to control the pressing force and length of the mandrel pressed into the wheel bracket, which makes the assembly difficult and the assembly cost is high ; In addition, in order to reduce the stress concentration on the contact surface between the mandrel and the wheel, it is necessary to reasonably design the connection hole for installing the mandrel on the wheel bracket, which increases the design difficulty.

Utility model content

The problem solved by the utility model is that the wheel bracket in the prior art is separated from the mandrel, and the manufacturing and assembly costs are high.

In order to solve the above problems, the utility model provides a wheel bracket for a multi-link independent suspension system, which includes a bracket body, the bracket body has a hub mounting part, and a mandrel is arranged on the hub mounting part, so that The above mandrel is used to connect with the wheel hub,

The mandrel is integrally formed with the bracket body.

Optionally, the mandrel includes a first part and a second part connected to each other, the first part is connected to the stent body, and the second part is located at an end of the first part opposite to the stent body;

The outer diameter of the first part is larger than the outer diameter of the second part, and the second part is cylindrical.

Optionally, the outer diameter of the first portion decreases gradually along the axial direction from one end close to the stent body to the other end.

Optionally, the connecting portion of the first part and the second part has a first chamfer.

Optionally, the first chamfer is a rounded corner.

Optionally, the end surface of the first part close to the end of the second part is a plane.

Optionally, the mandrel is connected to the wheel hub through a locking bolt, and the locking bolt has an external thread;

There is a cylindrical through hole inside the mandrel, and an internal thread is provided on the inner wall of the cylindrical through hole;

The locking bolt is inserted into the cylindrical through hole, and the external thread cooperates with the internal thread.

Optionally, the end of the inner wall of the cylindrical through hole in the axial direction opposite to the bracket body has a second chamfer.

Optionally, the bracket body is provided with ribs for enhancing the strength of the bracket body.

Compared with the prior art, the technical solution of the utility model has the following advantages:

The bracket body and the mandrel are integrally formed, and the mandrel is used as a part of the wheel bracket. The mandrel and the wheel bracket can be completed in the same process, which reduces the cost of the process, and can avoid the difference between the two processes due to the difference in the process. The dimensional deviation; and there is no need for additional assembly process between the two, which reduces the assembly cost.

Description of drawings

Fig. 1 is the perspective view of the wheel support in the utility model embodiment;

Fig. 2 is an exploded view along the side view direction of the wheel bracket and the hub bearing of the embodiment of the present invention;

Fig. 3 is a bottom view of Fig. 1 .

Detailed ways

There are various types of automobile suspension systems, including multi-link independent suspension systems, torsion beam suspension systems, etc. Among them, in multi-link independent suspensions, the suspension system usually includes an upper swing arm, a lower swing arm, and a connecting rod. Many components such as rods cannot be directly connected to the wheels, so the solution adopted in the prior art is to connect these components to the wheel brackets respectively, and then the wheel brackets are connected to the wheels through the mandrel; and the torsion beam suspension system There are fewer parts, so the wheel bracket is not included, and the wheel is directly connected to the torsion beam with the mandrel.

In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, specific embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

The embodiment of the utility model provides a wheel bracket, specifically a wheel bracket applied to a multi-link independent suspension system, especially a multi-link independent suspension system of an automobile rear axle. Referring to Fig. 1-2, the wheel bracket There is a bracket body 10, the bracket body 10 has a hub bearing installation part 10a, the hub bearing installation part 10a is fixedly provided with a mandrel 20, the hub bearing installation part 10a and the mandrel 20 are integrally formed, that is to say, the mandrel 20 and the bracket body 10 integral molding.

Compared with the way in which the wheel bracket and the mandrel are two parts in the prior art, the mandrel and the wheel bracket are integrally formed in this implementation, which can be completed in the same process, the process cost is reduced, and the difference between the two different processes can be avoided. The dimensional deviation caused by the difference in the process; in addition, no additional assembly process is required between the two, which reduces the assembly cost.

The wheel bracket is connected with the hub bearing 30 in the wheel hub to support the wheel, and the hub bearing 30 is sleeved on the outside of the mandrel 20 .

The mandrel 20 includes a first part 21 and a second part 22 connected to each other. The first part 21 is connected to the bracket body 10 and integrally formed. The second part 22 is located at the end of the first part 21 opposite to the bracket body 10 . The diameter is larger than the outer diameter of the second part 22, which is used to strengthen the strength of the connecting part between the mandrel 20 and the stent body 10.

In this embodiment, the outer diameter of the first part 21 gradually decreases from one end close to the stent body 10 to the other end in the axial direction. The first part 21 of 20 has higher strength and strengthens the support to the wheel. The second part 22 is cylindrical, and the hub bearing 30 is sheathed outside the second part 22 .

The connecting portion of the first part 21 and the second part 22 has a first chamfer 23 . The first chamfer 23 can reduce stress concentration at the connecting portion of the first part 21 and the second part 22 , and improve the bearing capacity of the mandrel 20 . Wherein, the first chamfer 23 is a rounded corner, and the radius of the rounded corner should be large enough to obtain a better effect of reducing stress concentration.

Further, the end of the first part 21 close to the second part 22 has an annular end surface 21a. When the hub bearing 30 is sleeved on the mandrel 20 , the hub bearing 30 is in contact with the end surface 21 a, and the end surface 21 a is used to bear the force exerted by the hub bearing 30 . In this embodiment, the end face 21a is set as a plane, so that the axial pressure can be more uniformly borne.

Referring to FIG. 2 , the hub bearing 30 and the mandrel 20 are connected by locking bolts 40 . The locking bolt 40 includes a head 41 and a body 42. The body 42 has an external thread 42a, the inside of the mandrel 20 has a cylindrical through hole 20a, and the inner wall of the cylindrical through hole 20a is provided with an internal thread 20b. During assembly, the locking bolt 30 The body 42 in the center is inserted in the cylindrical through hole 20a, the external thread 42a on the body 42 cooperates with the internal thread 20b of the mandrel 20, and the head 41 of the locking bolt 40 is set against the hub bearing 30 and is axially away from the mandrel 20 one end of the first part 21 .

In this embodiment, the inner wall of the cylindrical through hole 20a has a second chamfer 22a at the end opposite to the bracket body 10 in the axial direction, and the second chamfer 22a is an inner chamfer. This facilitates the insertion of the locking bolt.

Further, ribs (not shown in the figure) may be provided on the surface of the bracket body 10 to strengthen the strength of the bracket body 10 .

When the car is stationary, the wheel bracket bears part of the load on the rear of the vehicle; when the car is running, the wheel bracket also needs to bear the impact load transmitted from the wheel to the suspension. Therefore, it is also necessary to ensure that the wheel bracket has sufficient rigidity and strength. The wheel bracket of this embodiment adopts cast iron to obtain greater rigidity and strength.

Referring to FIG. 1 , there are several bolt holes 10 b distributed around the hub bearing installation part 10 a on the bracket body 10 , and the bolt holes 10 b are used as fender interface parts for installing wheel fenders.

Continuing to refer to FIG. 1 and in combination with FIG. 3 , there are also upper swing arm installation parts 31 , lower swing arm installation parts 32 , rear longitudinal control arm installation parts 33 , and rear front speed link installation parts 34 along the circumference of the bracket body 10 in the wheel bracket. , brake caliper hole 35, shock absorber mounting part 36, wheel speed sensor part 37. The structures and positions of the above-mentioned parts are all the same as those of the prior art.

Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model, so the protection scope of the present utility model should be based on the scope defined in the claims.

Claims (9)

1. A wheel bracket for a multi-link independent suspension system, comprising a bracket body, the bracket body has a hub mounting portion, the hub mounting portion is provided with a mandrel, and the mandrel is used to connect with the wheel hub connection, It is characterized in that the mandrel is integrally formed with the bracket body. 2. The wheel bracket according to claim 1, wherein the mandrel comprises a first part and a second part connected to each other, the first part is connected to the bracket body, the second part is located on the an end of the first part opposite to the bracket body; The outer diameter of the first part is larger than the outer diameter of the second part, and the second part is cylindrical. 3 . The wheel bracket according to claim 2 , wherein the outer diameter of the first portion gradually decreases along the axial direction from one end close to the bracket body to the other end. 4 . 4. The wheel bracket according to claim 2, wherein the connecting portion of the first part and the second part has a first chamfer. 5. The wheel bracket according to claim 4, wherein the first chamfer is a rounded corner. 6. The wheel bracket according to claim 2, wherein the end surface of the first part close to the end of the second part is a plane. 7. The wheel bracket according to claim 1, wherein the mandrel is connected to the hub of the wheel through a locking bolt, and the locking bolt has an external thread; There is a cylindrical through hole inside the mandrel, and an internal thread is provided on the inner wall of the cylindrical through hole; The locking bolt is inserted into the cylindrical through hole, and the external thread cooperates with the internal thread. 8 . The wheel bracket according to claim 7 , wherein the inner wall of the cylindrical through hole has a second chamfer at an end opposite to the bracket body in the axial direction. 9. The wheel bracket according to claim 1, wherein the bracket body is provided with ribs for strengthening the strength of the bracket body.