Shell assembly of rear wheel steering gear, rear wheel steering gear, rear wheel steering system and vehicle

Abstract

The utility model provides a shell assembly of a rear wheel steering gear, the rear wheel steering gear, a rear wheel steering system and a vehicle. The shell assembly of the rear wheel steering gear comprises a first shell and a first mounting base, and the first shell is used for containing a transmission assembly of the rear wheel steering gear; the first installation base is connected with the first shell and used for being connected with a rear auxiliary frame of the vehicle. Wherein the first shell and the first mounting seat are integrally formed. According to the shell assembly of the rear wheel steering gear, the problem that the whole vehicle layout difficulty is large can be solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a housing assembly of a rear-wheel steering gear, a rear-wheel steering gear, a rear-wheel steering system and a vehicle. Background Art

[0002] With the advancement and development of automobile technology, rear-wheel steering technology is widely used in medium and large passenger vehicles. The existing rear-wheel steering system is arranged in small passenger vehicles, which has the problem of compact boundaries and difficult vehicle layout. Utility Model Content

[0003] The present application provides a housing assembly of a rear-wheel steering gear, a rear-wheel steering gear, a rear-wheel steering system and a vehicle, so as to improve the problem of difficulty in the overall vehicle layout of the rear-wheel steering system.

[0004] The present application provides a housing assembly of a rear-wheel steering gear, which comprises a first housing and a first mounting seat, wherein the first housing is used to accommodate a transmission assembly of the rear-wheel steering gear; the first mounting seat is connected to the first housing and is used to connect to a rear sub-frame of a vehicle; wherein the first housing and the first mounting seat are integrally formed.

[0005] Wherein, the first mounting seat comprises a supporting crossbeam, a side portion of the supporting crossbeam is connected to the first shell, and an end portion of the supporting crossbeam is used to be connected to a longitudinal beam of the rear sub-frame.

[0006] The housing assembly further comprises a second mounting seat, which is connected to the first mounting seat and the first housing and is used for mounting a driving motor of the rear wheel steering gear.

[0007] The present application provides a rear wheel steering gear, which comprises a transmission assembly and the above-mentioned housing assembly, wherein the transmission assembly is arranged in a first housing.

[0008] The transmission assembly includes a rack and an input shaft, and the rack and the input shaft are meshed and arranged in the first housing.

[0009] The rear wheel steering gear further comprises a driving motor, which is connected to the input shaft; the first mounting seat and the crossbeam of the rear sub-frame form a receiving cavity, and the driving motor is arranged in the receiving cavity.

[0010] The present application provides a rear-wheel steering system, which includes a rear subframe and a rear-wheel steering gear, wherein the rear-wheel steering gear is installed on the rear subframe.

[0011] The rear subframe includes a first cross beam, a first longitudinal beam, a second cross beam and a second longitudinal beam which are connected in sequence, and the first mounting seat is connected to the first longitudinal beam and the second longitudinal beam respectively.

[0012] Among them, the first longitudinal beam is provided with a first mounting hole, the second longitudinal beam is provided with a second mounting hole, and the two ends of the first mounting seat are provided with third mounting holes. The first mounting hole, the second mounting hole and the third mounting hole are used to cooperate with the fixing piece.

[0013] The present application provides a vehicle, which includes the above-mentioned rear-wheel steering system.

[0014] The beneficial effects of the present application are as follows: the housing assembly of the rear-wheel steering gear provided by the present application includes a first housing and a first mounting seat, the first housing is used to accommodate the transmission assembly of the rear-wheel steering gear; the first mounting seat is connected to the first housing, and is used to connect to the rear sub-frame of the vehicle; wherein the first housing and the first mounting seat are integrally formed. In the above manner, the first mounting seat and the first housing are integrally formed, and the first mounting seat is used to fix the rear-wheel steering gear to the rear sub-frame, which can reduce the space occupied by the additional fixing devices of the rear-wheel steering system on the entire vehicle, thereby improving the problem of the difficulty of the entire vehicle layout of the rear-wheel steering system. In addition, the number of parts of the housing assembly can be reduced, the assembly steps of the housing assembly can be reduced, and the installation rate of the rear-wheel steering gear can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a rear wheel steering device provided by the present application;

[0017] Figure 2 is a structural schematic diagram of an embodiment of a rear wheel steering system provided by the present application;

[0018] Figure 3 It is a structural schematic diagram of an embodiment of a rear subframe provided by the present application;

[0019] Figure 4 It is a structural schematic diagram of a vehicle embodiment provided by the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0023] The present application provides a housing assembly for a rear wheel steering gear, referring to Figure 1 , Figure 1 It is a structural schematic diagram of an embodiment of a rear-wheel steering gear provided in the present application. The housing assembly 100 of the rear-wheel steering gear 10 includes a first housing 110 and a first mounting seat 120. The first housing 110 is used to accommodate a transmission assembly of the rear-wheel steering gear 10; the first mounting seat 120 is connected to the first housing 110 and is used to connect to the rear sub-frame of the vehicle; wherein the first housing 110 and the first mounting seat 120 are integrally formed.

[0024] The first mounting seat 120 is also used to support the spring arm of the rear-wheel steering system. The first mounting seat 120 can be used to fix the rear-wheel steering gear 10 to the rear subframe, and is also used to support the spring arm of the rear-wheel steering system, which can reduce the setting of the support structure of the spring arm in the rear-wheel steering system, and reduce the space occupied by the additional fixing device of the rear-wheel steering system, thereby improving the difficulty of the rear-wheel steering system layout. In addition, the first mounting seat 120 and the first shell 110 are integrally formed, which can reduce the number of parts of the shell assembly 100, reduce the assembly steps of the shell assembly 100, and increase the installation rate of the rear-wheel steering gear 10.

[0025] In other embodiments, the first shell 110 and the first mounting seat 120 may also be connected by welding.

[0026] Optionally, the first mounting seat 120 includes a supporting crossbeam, the side of which is connected to the first housing 110, and the end of which is used to connect to the longitudinal beam of the rear sub-frame. In addition to being used to mount the first housing 110 on the longitudinal beam of the rear sub-frame, the supporting crossbeam of this embodiment can also be used as a crossbeam of the rear sub-frame, thereby reducing the arrangement of the crossbeam of the rear sub-frame, increasing the layout space of the rear wheel steering system, and improving the difficulty of the whole vehicle layout of the rear wheel steering system.

[0027] Specifically, the supporting crossbeam is provided with a first connecting portion 121 and a second connecting portion 122, the side of the first connecting portion 121 is connected to the outer wall of the first housing 110, the side of the second connecting portion 122 is connected to another side opposite to the side of the first connecting portion 121, and the end of the second connecting portion 122 is used to connect to the longitudinal beam of the rear subframe, wherein the size of the side of the first connecting portion 121 is smaller than the size of the side of the second connecting portion 122, and a plurality of through slots 123 are provided in the middle of the first connecting portion 121. In the above manner, the weight of the supporting crossbeam can be reduced.

[0028] Optionally, the housing assembly 100 further includes a second mounting seat 130, which is connected to the first mounting seat 120 and the first housing 110, respectively, and is used to mount a drive motor of the rear wheel steering gear 10. The housing assembly 100 of this embodiment can enhance the connection stability between the drive motor and the housing assembly 100 by providing the second mounting seat 130 to mount the drive motor.

[0029] Optionally, the first mounting seat 120, the second mounting seat 130 and the first housing 110 are integrally formed, which can reduce the parts of the housing assembly 100 and improve the installation efficiency of the rear wheel steering gear 10. In other embodiments, the first mounting seat 120, the second mounting seat 130 and the first housing 110 can also be welded.

[0030] The present application provides a rear wheel steering device 10, see Figure 1 The rear wheel steering gear 10 includes a transmission assembly and a housing assembly 100, wherein the transmission assembly is disposed in a first housing 110 of the housing assembly 100. Specifically, the housing assembly 100 includes a first housing 110 and a first mounting seat 120 which are integrally formed, the transmission assembly is disposed in the first housing 110, and the first mounting seat 120 is mounted on the rear sub-frame of the vehicle.

[0031] Optionally, the transmission assembly includes a rack and an input shaft, the rack and part of the input shaft are arranged in the first housing 110, and the rack and the input shaft are meshed and arranged in the first housing 110. The rack and part of the input shaft of this embodiment are arranged in the first housing, so that the rack and part of the input shaft can be protected by the first housing.

[0032] Optionally, the rear wheel steering device 10 further includes a drive motor connected to the input shaft; wherein the first mounting seat 120 and the crossbeam of the rear sub-frame form a receiving cavity 101 (see Figure 2 ), the drive motor is arranged in the accommodating chamber 101. In this embodiment, the drive motor is arranged in the accommodating chamber 101, which can improve the utilization rate of the structural space and improve the difficulty of the whole vehicle layout of the rear wheel steering system.

[0033] The present application provides a rear wheel steering system, referring to Figure 2 is a structural schematic diagram of an embodiment of a rear wheel steering system provided by the present application, such as Figure 2 As shown, the rear wheel steering system 20 includes a rear subframe 210 and a rear wheel steering gear 220, and the rear wheel steering gear 220 is installed on the rear subframe 210. The rear wheel steering gear 220 is any one of the rear wheel steering gears 10 in the above-mentioned embodiments of the rear wheel steering gear 10.

[0034] Specifically, see Figure 3 , Figure 3 : is a schematic structural diagram of an embodiment of a rear subframe provided by the present application, such as Figure 3 As shown, the rear sub-frame includes a first cross beam 212, a first longitudinal beam 211, a second longitudinal beam 213 and a second cross beam 214 which are connected in sequence. The first mounting seat 120 is connected to the first longitudinal beam 211 and the second longitudinal beam 213 respectively. The first mounting seat is also used to transmit the cross beam force of the left / right spring arm in the rear wheel steering system 20. In this embodiment, the rear wheel steering device 220 is installed between the two longitudinal beams through the first mounting seat 120, and the lateral support of the spring on the rear sub-frame 210 is replaced by the first mounting seat, and the first mounting seat is installed on the rear sub-frame, which solves the installation problem of the rear wheel steering device 220. At the same time, the first shell and the first mounting seat are integrally formed to play a role in strengthening the lateral support.

[0035] Optionally, the first longitudinal beam 211 is provided with a first mounting hole 102, the second longitudinal beam 213 is provided with a second mounting hole 103, and the first mounting seat 120 is provided with a third mounting hole at both ends, and the first mounting hole 102, the second mounting hole 103 and the third mounting hole are used to cooperate with the fixing piece. It can be understood that the first mounting hole 102 is arranged corresponding to the third mounting hole at one end, and is fixed with the fixing piece; the second mounting hole 103 is arranged corresponding to the third mounting hole at the other end, and is fixed with the fixing piece, so as to realize the installation of the rear wheel steering gear 10. In this embodiment, by setting mounting holes at both ends of the longitudinal beam of the rear sub-frame and the first mounting seat 120, the rear wheel steering gear 10 is installed with the rear sub-frame by using the mounting holes and the fixing piece. This installation method is simple and can improve the installation efficiency of the rear wheel steering gear 10.

[0036] Optionally, the first longitudinal beam 211 and the second longitudinal beam 213 are provided with mounting grooves 104, the first mounting holes 102 and the second mounting holes 103 are respectively located in the mounting grooves 104 of the corresponding longitudinal beams, and the ends of the first mounting seats 120 are arranged in the mounting grooves 104. In this way, the aesthetics of the installation of the rear wheel steering gear 10 can be improved.

[0037] Optionally, a receiving cavity 101 is formed between the first mounting seat 120 and the first cross beam 212, or between the first mounting seat 120 and the second cross beam 214, and the drive motor is located in the receiving cavity 101. In the above manner, the drive motor is reasonably arranged between the rear sub-frame and the housing assembly 100, making full use of the space and reducing the difficulty of the vehicle layout.

[0038] Optionally, the rear-wheel steering system further includes a bolt, and the bolt is used to cooperate with the first mounting hole 102, the second mounting hole 103 and the third mounting hole.

[0039] The present application provides a vehicle, referring to Figure 4 , Figure 4 is a schematic diagram of the structure of an embodiment of a vehicle provided by the present application, such as Figure 4 As shown, the vehicle 30 includes a rear-wheel steering system, wherein the rear-wheel steering system is any one of the rear-wheel steering system embodiments described above.

[0040] This embodiment provides a rear-wheel steering system to cooperate with the front-wheel steering to improve the flexibility of steering in low-speed conditions and the comfort and stability of high-speed lane changes.

[0041] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A housing assembly of a rear wheel steering gear, characterized in that: include: A first housing is used to accommodate a transmission assembly of a rear wheel steering gear; A first mounting seat connected to the first housing and used to be connected to a rear subframe of the vehicle; Wherein, the first shell and the first mounting seat are integrally formed.

2. The housing assembly according to claim 1, characterized in that: The first mounting seat includes a supporting cross beam, a side portion of the supporting cross beam is connected to the first shell, and an end portion of the supporting cross beam is used to be connected to a longitudinal beam of the rear sub-frame.

3. The housing assembly according to claim 1, characterized in that: The housing assembly further comprises: The second mounting seat is connected to the first mounting seat and the first shell, and is used for mounting the driving motor of the rear wheel steering gear.

4. A rear wheel steering gear, characterized in that: include: A transmission assembly and a housing assembly as described in any one of claims 1 to 3, wherein the transmission assembly is arranged in the first housing.

5. The rear wheel steering gear according to claim 4, characterized in that: The transmission assembly includes a rack and an input shaft, and the rack and the input shaft are meshed and arranged in the first housing.

6. The rear wheel steering gear according to claim 5, characterized in that: The rear wheel steering gear also includes a drive motor, which is connected to the input shaft; Wherein, the first mounting seat and the crossbeam of the rear sub-frame form a receiving cavity, and the driving motor is arranged in the receiving cavity.

7. A rear wheel steering system, characterized in that: include: A rear subframe and a rear wheel steering gear as described in any one of claims 4 to 6, wherein the rear wheel steering gear is mounted on the rear subframe.

8. The steering system according to claim 7, characterized in that: The rear subframe includes a first cross beam, a first longitudinal beam, a second cross beam and a second longitudinal beam which are connected in sequence, and the first mounting seat is connected to the first longitudinal beam and the second longitudinal beam respectively.

9. The steering system according to claim 8, characterized in that: The first longitudinal beam is provided with a first mounting hole, the second longitudinal beam is provided with a second mounting hole, and both ends of the first mounting seat are provided with third mounting holes, and the first mounting hole, the second mounting hole and the third mounting hole are used to cooperate with the fixing member.

10. A vehicle, characterized in that: include: A rear wheel steering system as claimed in any one of claims 7 to 9.

Images