Steering gear, steering system and vehicle

Abstract

The utility model discloses a steering gear and a vehicle. A steering gear shell comprises a shell body and a plurality of speed reduction assemblies. Wherein the shell body is configured to be an integrally-formed part, the shell body is provided with a plurality of installation areas, and the speed reduction assemblies are installed in the installation areas in a one-to-one correspondence mode. According to the steering gear, the installation areas for installing the speed reduction assemblies are integrated on the shell body, the integrated design is achieved, the manufacturing cost is effectively reduced, the assembling process is simplified, meanwhile, the installation precision can be effectively improved, and then the performance of the steering gear can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to a steering gear, a steering system and a vehicle. Background Art

[0002] In the vehicle steering system, the steering gear is one of the key components, and its performance directly affects the vehicle's handling and safety. In the existing dual-power steering gear design, the deceleration components of the dual-power steering mechanism are usually installed on two independent housings. This structure requires repeated selection of the thickness of the adjustment gasket to adjust the steering gear clearance during assembly, which makes the assembly process complicated, the manufacturing cost high, and the installation accuracy low. Utility Model Content

[0003] The first object of the utility model is to provide a new technical solution for a steering gear, which can at least solve the technical problem that the existing steering gear is inconvenient to assemble.

[0004] The second object of the utility model is to provide a new technical solution for a steering system.

[0005] The third object of the present invention is to provide a new technical solution for a vehicle.

[0006] According to a first aspect of the utility model, a steering gear is provided, comprising: a shell body; a plurality of reduction assemblies; wherein the shell body is configured as an integrally formed part, the shell body is provided with a plurality of installation areas, and the plurality of reduction assemblies are installed in the plurality of installation areas in a one-to-one correspondence.

[0007] Optionally, the plurality of deceleration assemblies include a first deceleration assembly and a second deceleration assembly, and the plurality of installation areas include a first installation area and a second installation area; wherein the first installation area and the second installation area are located at both ends of the shell body, the first deceleration assembly is arranged in the first installation area, and the second deceleration assembly is arranged in the second installation area.

[0008] Optionally, the reduction assembly is configured as a worm gear assembly, and the mounting area includes an mounting chamber and a mounting channel provided at one end of the shell body, the mounting chamber matches the worm gear to install the worm gear, the mounting channel is connected to the mounting chamber, and the mounting channel matches the worm gear to install the worm gear.

[0009] Optionally, the first reduction assembly and the second reduction assembly are both worm gear assemblies, and the shell body is provided with a first opening, and the first opening is suitable for assembling the worm gear of the first reduction assembly and the worm gear of the second reduction assembly.

[0010] Optionally, the steering gear includes: a steering screw, the worm gear of the reduction assembly is drivingly connected to the steering screw; and a rotation connection device, the rotation connection device is used to rotatably connect the steering screw to the shell body.

[0011] Optionally, the shell body further includes an installation space, the steering screw is disposed in the installation space, and the installation area is communicated with the installation space.

[0012] Optionally, the rotation connection device is suitable for being arranged at an end of the shell body away from the steering wheel.

[0013] Optionally, the shell body is provided with a third installation channel, and the rotating connection device is provided in the third installation channel.

[0014] Optionally, the rotating connection device includes: at least one first bearing, which is sleeved on the steering screw; a first fixing component, which is suitable for limiting the position of the inner ring of the first bearing in the axial direction of the steering screw; and a second fixing component, which is suitable for limiting the position of the outer ring of the first bearing in the axial direction of the steering screw.

[0015] Optionally, the first fixing assembly includes: a gasket, which is sleeved on the steering screw, the first end of the gasket abuts against the worm gear of the reduction assembly, and the second end of the gasket abuts against the inner ring of the first bearing; a first locking piece, which is arranged at an end of the first bearing away from the gasket, the first locking piece is fixedly connected to the steering screw, and the first locking piece abuts against the inner ring of the first bearing.

[0016] Optionally, the second fixing component is located on a side of the first bearing away from the installation space, the second fixing component is fixedly connected to the shell body, and the outer ring of the first bearing abuts against the second fixing component and the shell body respectively.

[0017] Optionally, the second fixing assembly includes: an end cover, the end cover is threadedly connected to the inner wall surface of the third installation channel, and the end cover abuts against the outer ring of the first bearing.

[0018] Optionally, the second fixing assembly includes: a second locking member, the second locking member is arranged at an end of the end cover away from the first bearing, and the second locking member is threadedly connected to the outer peripheral surface of the end cover.

[0019] Optionally, the second locking member abuts against the shell body.

[0020] Optionally, the outer peripheral surface of the first bearing is in contact with the inner wall surface of the third installation channel.

[0021] Optionally, the steering gear further comprises: a support seat, the support seat is arranged in the installation space, the support seat is fixedly connected to the shell body, the steering screw is supported by the support seat and the two are rotationally connected.

[0022] Optionally, the steering gear further comprises: a sealing ring, wherein the sealing ring is sleeved on the support seat, and the sealing ring is used to seal the support seat and the shell body.

[0023] According to a second aspect of the utility model, a steering system is provided, comprising: a steering gear as described in any one of the above items; and a steering wheel connected to the steering gear.

[0024] According to a third aspect of the utility model, a vehicle is provided, comprising the above-mentioned steering system.

[0025] According to the steering gear of the present invention, the installation areas for installing multiple deceleration components are integrated on the shell body, thereby achieving an integrated design, effectively reducing the manufacturing cost and simplifying the assembly process. At the same time, the installation accuracy can be effectively improved, thereby effectively improving the performance of the steering gear.

[0026] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0028] Figure 1 This is a structural exploded diagram of a steering gear according to an embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of a steering gear according to an embodiment of the utility model;

[0030] Figure 3 yes Figure 2 Sectional view at midline AA;

[0031] Figure 4 yes Figure 2 Sectional view at midline BB.

[0032] Reference numerals:

[0033] Steering gear 100;

[0034] Shell body 10; installation space 11; first opening 111;

[0035] Steering screw 20; steering nut 21; steel ball guide tube 22; guide tube clamp 23; hexagonal bolt 24;

[0036] First reduction assembly 30; first worm wheel 31; first worm 32; first power-assisting motor 30a;

[0037] A second reduction assembly 40; a second worm gear 41; a second worm 42; a second power-assisting motor 40a;

[0038] Rotating connecting device 50;

[0039] A first bearing 51; a first fixing assembly 52; a backing ring 521; a first locking member 522;

[0040] The second fixing assembly 53; the end cover 531; the second locking member 532;

[0041] Support seat 60; fastener 61; sealing ring 62;

[0042] Torque sensor assembly 70; sensor housing 71; sensor body 72; output shaft 73; torsion bar 74; pin 75;

[0043] Steering arm shaft assembly 80. DETAILED DESCRIPTION

[0044] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0045] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0046] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0047] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0048] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0049] The diverter 100 according to the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0050] like Figure 1 and Figure 2 As shown, the steering gear 100 according to the embodiment of the present invention includes a shell body 10 and a plurality of speed reduction components.

[0051] Specifically, the shell body 10 is configured as an integrally formed part, and the shell body 10 is provided with a plurality of installation areas, and the plurality of speed reduction assemblies are installed in the plurality of installation areas in a one-to-one correspondence.

[0052] In other words, if Figure 1 and Figure 2 As shown, the steering gear 100 according to the embodiment of the utility model mainly includes a shell body 10 and a plurality of deceleration assemblies, wherein the shell body 10 is an integrally formed part (i.e., a structural part), and the number of deceleration assemblies can be the same as the number of power assists of the steering gear 100. For example, when the steering gear 100 is a dual-power steering gear, the number of deceleration assemblies is two; specifically, the shell body 10 is provided with a plurality of installation areas suitable for installing deceleration assemblies, the number of installation areas is the same as the number of deceleration assemblies, and the shapes of the plurality of installation areas are respectively adapted to the corresponding deceleration assemblies, so that the plurality of deceleration assemblies can be installed in the corresponding installation areas in sequence. Compared with the prior art, the installation areas of the plurality of deceleration assemblies are all arranged on a shell body 10, and the positions of the installation areas are relatively fixed, which can ensure good precision and does not require adjustment during the assembly process.

[0053] Therefore, according to the steering gear 100 of the embodiment of the utility model, an integrated design is achieved by integrating the installation areas for installing multiple deceleration components on the shell body 10, which effectively reduces the manufacturing cost and simplifies the assembly process. At the same time, it can effectively improve the installation accuracy, thereby effectively improving the performance of the steering gear 100.

[0054] According to one embodiment of the utility model, a plurality of reduction assembly includes a first reduction assembly 30 and a second reduction assembly 40, and a plurality of installation areas include a first installation area and a second installation area, wherein the first installation area and the second installation area are located at both ends of the shell body 10, the first reduction assembly 30 is arranged in the first installation area, and the second reduction assembly 40 is arranged in the second installation area.

[0055] That is to say, the steering gear 100 includes a first reduction assembly 30 and a second reduction assembly 40, and the shell body 10 is provided with a first mounting area and a second mounting area, the first mounting area is adapted to the shape of the first reduction assembly 30, so that the first reduction assembly 30 can be installed in the first mounting area, and the second mounting area is adapted to the shape of the second reduction assembly 40, so that the second reduction assembly 40 can be installed in the second mounting area, thereby making the structure of the steering gear 100 suitable for a dual power steering gear.

[0056] Furthermore, the first installation area and the second installation area are located at both ends of the shell body 10, so that the first reduction assembly 30 and the second reduction assembly 40 can rotate at both ends of the shell body 10, thereby ensuring the stability of the steering gear 100 during operation.

[0057] In some specific embodiments of the present invention, the reduction assembly is configured as a worm gear assembly, and the installation area includes an installation chamber and an installation channel provided at one end of the shell body 10, the installation chamber matches the worm gear to install the worm gear, the installation channel is connected to the installation chamber, and the installation channel matches the worm gear to install the worm gear.

[0058] Specifically, the reduction assembly is a worm gear reduction mechanism, which includes a worm wheel and a worm meshing with the worm wheel. The installation area includes an installation chamber arranged at one end of the shell body 10, and an installation channel connected to the installation chamber. The installation chamber corresponds to the shape of the worm wheel, so that the worm wheel can be installed in the installation chamber. The installation channel corresponds to the shape of the worm, so that the worm can be installed in the installation channel. At the same time, one end of the installation channel passes through the shell body 10, so that one end of the worm can extend out of the shell body 10, thereby facilitating connection with the power-assisted motor, so as to drive the worm to rotate by the power-assisted motor.

[0059] Therefore, by integrating the installation areas for installing multiple reduction assemblies on the shell body 10, the axial accuracy between the worm wheel and the worm of each reduction assembly can be guaranteed, so that the meshing accuracy of the two worm wheels is higher, the transmission efficiency is higher, and it is not easy to wear and produce abnormal noise, thereby ensuring the performance of the steering gear 100.

[0060] Furthermore, the worm gear of the first reduction assembly 30 (i.e., the first worm gear 32) is connected to the first power-assisting motor 30a of the steering gear 100, and the worm gear of the second reduction assembly 40 (i.e., the second worm gear 42) is connected to the second power-assisting motor 40a of the steering gear 100, so that the first worm gear 32 and the second worm gear 42 can be driven to rotate by the first power-assisting motor 30a and the second power-assisting motor 40a.

[0061] Therefore, by integrating the installation areas for installing multiple reduction assemblies on the shell body 10, the axial accuracy between the worm wheel and the worm of each reduction assembly can be guaranteed, so that the meshing accuracy of the two worm wheels is higher, the transmission efficiency is higher, and it is not easy to wear and produce abnormal noise, thereby ensuring the performance of the steering gear 100.

[0062] In some specific embodiments of the present invention, the first reduction assembly 30 and the second reduction assembly 40 are both worm gear assemblies, and the shell body 10 is provided with a first opening 111, which is suitable for assembling the worm gear of the first reduction assembly 30 (i.e., the first worm gear 31) and the worm gear of the second reduction assembly 40 (i.e., the second worm gear 41).

[0063] In other words, Figure 2 As shown, in order to facilitate the production and assembly of the steering gear 100, a first opening 111 is provided at one end of the shell body 10. The radial dimension of the first opening 111 can be larger than the radial dimension of the worm gears of the first reduction assembly 30 and the second reduction assembly 40, so that the worm gears of the first reduction assembly 30 and the second reduction assembly 40 can be assembled from the first opening 111, which is easy to operate.

[0064] In some optional examples of the present invention, the steering gear 100 includes: a steering screw 20 and a rotating connection device 50, the worm gear of the reduction assembly is transmission-connected to the steering screw 20, and the rotating connection device 50 is used to rotatably connect the steering screw 20 to the shell body 10.

[0065] Specifically, Figure 2 As shown, the steering gear 100 also includes a steering screw 20 rotatable around its own axis, and the worm wheel of the reduction assembly is drivingly connected to the steering screw, that is, the worm wheel of the first reduction assembly 30 (that is, the first worm wheel 32) and the worm wheel of the second reduction assembly 40 (that is, the second worm wheel 32) are both sleeved and fixed on the steering screw 20 to drive the steering screw 20 to rotate, and the steering screw 20 is also sleeved with a steering nut 21, and a first transmission tooth is provided on one side of the steering nut 21. The shell body 10 is also rotatably connected to the steering arm shaft assembly 80, and the steering arm shaft assembly 80 is provided with a second transmission tooth adapted to the first transmission tooth, and the second transmission tooth is meshed with the first transmission tooth. When the first transmission tooth is meshed with the second transmission tooth, the rotation of the steering nut 21 can be limited, so that when the steering screw 20 rotates, the steering nut 21 can be driven to displace in the axial direction of the steering screw 20, and the steering arm shaft assembly 80 can be driven to rotate through the first transmission tooth and the second transmission tooth. One end of the steering screw 20 can be rotatably connected to the shell body 10 through a rotating connection device 50, so that the steering screw 20 can be connected to the shell body 10.

[0066] Since the positions of the worm gears of the multiple reduction assemblies on the steering screw 20 are fixed, after the steering screw 20 is connected to the shell body 10, the worm gears of the multiple reduction assemblies can automatically return to the set positions, thereby ensuring the installation accuracy of the worm gears of the multiple reduction assemblies, thereby ensuring the meshing accuracy of the worm gears and worms of the multiple reduction assemblies.

[0067] In some specific embodiments of the present invention, the shell body 10 further includes an installation space 11 , the steering screw 20 is disposed in the installation space 11 , and the installation area is communicated with the installation space 11 .

[0068] Specifically, the shell body 10 is provided with an installation space 11 between the first installation area and the second installation area, and the first installation area is communicated with the second installation area. The steering screw 20 can be arranged in the installation space 11, so that the shell body 10 can protect the steering screw 20.

[0069] According to an embodiment of the present invention, the rotation connection device 50 is adapted to be disposed at an end of the housing body 10 away from the steering wheel.

[0070] That is to say, in the axial direction of the steering screw 20, the steering gear 100 has a first end and a second end that are relatively arranged, wherein the first end of the steering gear 100 is suitable for connecting to the steering wheel, and the rotating connection device 50 can be arranged at the second end of the steering gear 100, that is, the rotating connection device 50 can rotatably connect the steering screw 20 to the shell body 10 at the end of the shell body 10 away from the steering wheel, and the rotating connection device 50 can withstand the larger axial force of the steering stud 20 during operation, which can ensure the stability of the stud 20 during operation, and the structure is simple, which simplifies the assembly process.

[0071] In some optional examples of the present invention, the shell body 10 is provided with a third installation channel, and the rotating connection device 50 is provided in the third installation channel.

[0072] Specifically, a third mounting channel is provided at one end of the shell body 10 away from the steering wheel, one end of the steering screw 20 extends into the third mounting channel, and a rotating connecting device 50 is also provided in the third mounting channel. The rotating connecting device 50 can be used to rotatably connect one end of the steering screw 20 to the shell body 10 in the third mounting channel. The rotating connecting device 50 can withstand a large axial force of the steering stud 20 during operation, thereby ensuring the stability of the stud 20 during operation. In addition, the structure is simple, which simplifies the assembly process.

[0073] In some specific embodiments of the present invention, the rotating connection device 50 includes: at least one first bearing 51, a first fixed component 52 and a second fixed component 53, the first bearing 51 is sleeved on the steering screw 20, the first fixed component 52 is suitable for limiting the position of the inner ring of the first bearing in the axial direction of the steering screw 20, and the second fixed component 53 is suitable for limiting the position of the outer ring of the first bearing in the axial direction of the steering screw 20.

[0074] That is to say, the rotating connection device 50 mainly includes a first bearing (for example, a four-point angular contact ball bearing), a first fixed component and a second fixed component, wherein the first bearing 51 can be one or more. In the present embodiment, the number of first bearings is two. The first fixed component 52 can limit the position of the inner ring of the first bearing 51 in the axial direction of the steering screw 20, and the second fixed component 53 can limit the position of the outer ring of the first bearing 51 in the axial direction of the steering screw 20, thereby limiting the position of the steering screw 20 in the axial direction of the steering screw 20, and preventing the steering screw 20 from moving in the axial direction of the steering screw 20 relative to the shell body 10.

[0075] In this example, the first bearing can ensure the smoothness of the rotation of the rotating screw 20, and the first bearing can withstand the large axial force of the steering stud 20 during operation, thereby ensuring the stability of the stud 20 during operation.

[0076] According to one embodiment of the utility model, the first fixing component 52 includes: a gasket 521 and a first locking member 522. The gasket 521 is sleeved on the steering screw 20. The first end of the gasket 521 abuts against the worm gear of the reduction assembly. The second end of the gasket 521 abuts against the inner ring of the first bearing 51. The first locking member 52 is arranged at one end of the first bearing 51 away from the gasket 521. The first locking member 522 is fixedly connected to the steering screw 20, and the first locking member 522 abuts against the inner ring of the first bearing 51.

[0077] Specifically, the first fixing component 52 mainly includes a gasket 521 and a first locking piece. The first bearing 51 is sleeved on the steering screw 20. The gasket 521 is located between the second worm gear 41 and the first bearing 51. The first locking piece 522 is located on the side of the first bearing 51 away from the gasket 53. The first locking piece 522 can be formed into a nut structure. The first locking piece 522 is sleeved on the steering screw 20 and the two are threadedly connected. By tightening the first locking piece 522, the first locking piece 522 can be abutted against the inner ring of the first bearing 51. Under the action of the abutting force, the two ends of the gasket 53 can be abutted against the inner rings of the second worm gear 41 and the first bearing 51 respectively, so that the position of the inner ring of the first bearing 51 relative to the steering screw 20 can be limited in the axial direction of the steering screw 20. The structure is simple and easy to produce and assemble.

[0078] Moreover, the second worm gear 41 can be fixed to the steering screw 20 by the first fixing assembly 52, that is, during assembly, the second worm gear 41 can be first sleeved on the first end of the steering screw 20, and then the gasket 521 can be sleeved on the first end of the steering screw 20, and then the first end of the steering screw 20 can be extended into the third installation channel, and then the first bearing 51 can be sleeved on the first end of the steering screw 20, and finally the first locking piece 522 can be threadedly connected to the first end of the steering screw 20 and tightened, so that the end of the second worm gear 41 away from the gasket 521 abuts against the steering screw 20, the end of the gasket 521 away from the first bearing 51 abuts against the second worm gear 41, and the two ends of the first bearing 51 abut against the gasket 521 and the first locking piece 522 respectively, thereby realizing the fixation of the second worm gear 41 to the steering screw 20 and the first bearing 51 to the steering screw 20, and the structure is simple and convenient for production and assembly.

[0079] In some specific embodiments of the present invention, the second fixing component 53 is located on the side of the first bearing 51 away from the installation space 11, the second fixing component 53 is fixedly connected to the shell body 10, and the outer ring of the first bearing 51 abuts against the second fixing component 53 and the shell body 10 respectively.

[0080] That is to say, the second fixing component 53 can be installed on the side of the first bearing 51 away from the installation space 11. The outer periphery of the second fixing component 53 is provided with an external thread, so that the second fixing component 53 can be fixedly connected to the shell body 10 by a threaded connection. By tightening the second fixing component 53, the second fixing component 53 can be abutted against the outer ring of the first bearing 51. Under the action of the abutting force, the outer ring of the first bearing 51 can be abutted against the shell body 10, so that the position of the outer ring of the first bearing 51 relative to the shell body 10 can be limited in the axial direction of the steering screw 20, thereby realizing the rotational connection between the steering screw 20 and the connecting part 12, and the structure is simple, which is convenient for production and assembly.

[0081] In some optional examples of the present invention, a torque sensor assembly 70 suitable for connecting to a steering wheel is connected to one end of the shell body 10 away from the second installation area. The torque sensor assembly 70 is connected to the steering screw 20, and the first opening 111 on the shell body 10 can be blocked by the torque sensor assembly 70 to prevent external impurities from entering the interior of the shell body 10.

[0082] Furthermore, if Figure 1 and Figure 2 As shown, the torque sensor assembly 70 mainly includes a sensor housing 71, a sensor body 72, an output shaft 73, a torsion bar 74, a pin 75 and a sliding bearing. During assembly, the torsion bar 74 and the sliding bearing are pressed onto the steering screw 20 in sequence, the input shaft is installed and adjusted to a good position and then fixed with the pin 75, the first worm gear 31 is fixed to the steering screw 20 through a locking nut, the sensor housing 71 is installed, the sensor is pressed into place and then welded to form the steering screw 20 and the torque sensor assembly 70, and then the support seat 60, the steering nut 21, the steel ball, the steel ball conduit 22 are installed on the steering screw 20 and the torque sensor assembly 70 in sequence, the conduit clamp 23 and the hexagonal bolt 24 are fixed, and then the second worm gear 41 is pressed into form the steering screw and steering nut assembly, and finally the steering screw and steering nut assembly are installed into the shell body 10.

[0083] In some optional examples of the present invention, the first bearing 51 is a four-point angular contact ball bearing.

[0084] In some optional examples of the present invention, the second fixing assembly 53 includes: an end cover 531 , the end cover 531 is threadedly connected to the inner wall surface of the third installation channel, and the end cover 531 abuts against the outer ring of the first bearing 51 .

[0085] That is to say, the second fixing component 53 mainly includes an end cover 531, the outer peripheral surface of the end cover 531 is provided with an external thread, and the inner wall surface of the third mounting channel is provided with an internal thread matching therewith, so that the end cover 531 can be threadedly connected to the inner wall surface of the third mounting channel, and by tightening the end cover 531, one end of the end cover 531 can be abutted against the outer ring of the first bearing 51, and under the action of the abutting force, the outer ring of the first bearing 51 can be abutted against the shell body 10, so that the position of the outer ring of the first bearing 51 relative to the shell body 10 can be limited in the axial direction of the steering screw 20, and the structure is simple, which is convenient for production and assembly.

[0086] In some specific embodiments of the present invention, the second fixing assembly 53 includes: a second locking member 532 , which is disposed at one end of the end cover 531 away from the first bearing 51 , and the second locking member 532 is threadedly connected to the outer circumferential surface of the end cover 531 .

[0087] Specifically, the second fixing assembly 53 may also include a second locking piece 532, and the second locking piece 532 is formed as a nut structure, so that the second locking piece 532 can be threadedly connected to the outer peripheral surface of the end cover 531. The position of the end cover 531 can be locked by the second locking piece 532, which can effectively prevent the end cover 531 from loosening, thereby preventing the steering screw 20 from shaking in its axial direction, thereby ensuring the performance of the steering gear 100.

[0088] In some specific examples of the present invention, the second locking member 532 abuts against the shell body 10 .

[0089] That is, the second locking member 532 can lock the position of the end cover 531 by abutting against the shell body 10 to prevent the end cover 531 from loosening. Specifically, during assembly, by tightening the second locking member 532, one end of the second locking member 532 can be abutted against the shell body 10, thereby effectively preventing the end cover 531 from loosening, and improving the reliability of the steering gear 100.

[0090] In some specific implementations of the present invention, the outer peripheral surface of the first bearing 51 is in contact with the inner wall surface of the third channel.

[0091] Specifically, a portion of the diameter of the third channel is approximately the same as the outer ring diameter of the first bearing 51, so that the outer peripheral surface of the first bearing 51 can fit against the inner wall surface of the third mounting channel, so that the inner wall surface of the third mounting channel can limit the radial position of the first bearing 51, thereby avoiding radial deviation of the steering screw 20 and ensuring the installation accuracy of the steering screw 20.

[0092] According to an embodiment of the utility model, the steering gear 100 further includes: a support seat 60, the support seat 60 is disposed in the installation space 11, the support seat 60 is fixedly connected to the shell body 10, the steering screw 20 is supported by the support seat 60 and the two are rotatably connected.

[0093] Specifically, Figure 1 and Figure 2 As shown, a support seat 60 is provided at one end of the installation space 11 close to the first installation area. The support seat 60 can be fixedly connected to the shell body 10 by one or more fasteners 61 (for example, screws). The support seat 60 is provided with an assembly hole suitable for the steering screw 20 to pass through. The second end of the steering screw 20 passes through the assembly hole. The steering screw 20 and the support seat 60 are rotatably connected together through the second bearing, so that the steering screw 20 can be supported, the stability of the steering screw 20 during rotation can be improved, and the meshing accuracy of the first worm 32 and the first worm wheel 31 and the second worm 42 and the second worm wheel 41 can be guaranteed, thereby ensuring the performance of the steering gear 100.

[0094] In some specific embodiments of the present invention, the steering gear 100 further includes: a sealing ring 62 , which is sleeved on the support seat 60 , and is used to seal the support seat 60 and the shell body 10 .

[0095] That is to say, Figure 2 As shown, the outer periphery of the support seat 60 is provided with one or more sealing rings 62, which may be rubber sealing rings 62. The sealing rings 62 may fill the gap between the support seat 60 and the shell body 10, thereby playing a sealing role. The sealing rings 62 may also play a shock-absorbing role, thereby preventing the steering gear 100 from generating abnormal noise during operation.

[0096] In some optional examples of the present invention, the interior of the shell body 10 is set to an eccentric structure.

[0097] Specifically, the interior of the shell body 10 can be set to an eccentric structure according to actual needs, which is conducive to fully utilizing the space inside the shell body 10, and can reduce the space occupied by the shell body 10, thereby providing a larger layout space for the vehicle.

[0098] The specific structures and operations of other components of the steering gear 100 according to the embodiment of the utility model, such as the steering arm shaft assembly 80 and the torque sensor assembly 70, are known to ordinary technicians in the field and will not be described in detail in this embodiment.

[0099] In summary, the steering gear 100 according to the embodiment of the utility model realizes an integrated design by integrating the installation areas for installing multiple deceleration components on the shell body 10, effectively reduces the manufacturing cost, simplifies the assembly process, and effectively improves the installation accuracy, thereby effectively improving the performance of the steering gear 100.

[0100] The embodiment of the utility model further provides a steering system, comprising the steering gear 100 and a steering wheel described in any of the above embodiments, wherein the steering wheel is connected to the steering gear 100. Specifically, the steering wheel is connected to the torque sensor assembly 70 of the steering gear 100. Since the steering gear 100 according to the embodiment of the utility model has the above technical effects, the steering system according to the embodiment of the utility model also has corresponding technical effects, which will not be described in detail in this embodiment.

[0101] The embodiment of the utility model further provides a vehicle, comprising the steering system described in any of the above embodiments. Since the steering gear 100 according to the embodiment of the utility model has the above technical effects, the vehicle according to the embodiment of the utility model also has corresponding technical effects, which will not be described in detail in this embodiment.

[0102] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A steering gear, characterized in that: include: Shell body (10); A plurality of speed reduction assemblies (30, 40); The shell body (10) is configured as an integrally formed part, and the shell body (10) is provided with a plurality of installation areas, and the plurality of deceleration assemblies are installed in the plurality of installation areas in a one-to-one correspondence.

2. The steering gear according to claim 1, characterized in that: The plurality of deceleration assemblies include a first deceleration assembly (30) and a second deceleration assembly (40), and the plurality of installation areas include a first installation area and a second installation area; The first installation area and the second installation area are located at two ends of the shell body (10), the first reduction assembly (30) is arranged in the first installation area, and the second reduction assembly (40) is arranged in the second installation area.

3. The steering gear according to claim 1, characterized in that: The reduction assembly is configured as a worm gear assembly, and the installation area includes an installation chamber and an installation channel arranged at one end of the shell body (10), the installation chamber matches the worm gear to install the worm gear, the installation channel is connected to the installation chamber, and the installation channel matches the worm gear to install the worm gear.

4. The steering gear according to claim 2, characterized in that: The first reduction assembly (30) and the second reduction assembly (40) are both worm gear assemblies, and the shell body (10) is provided with a first opening (111), and the first opening (111) is suitable for assembling the worm gear (31) of the first reduction assembly (30) and the worm gear (41) of the second reduction assembly (40).

5. The steering gear according to claim 1, characterized in that: The diverter comprises: A steering screw (20), wherein the worm gear of the reduction assembly is drivingly connected to the steering screw (20); A rotation connection device (50) is used to rotatably connect the steering screw (20) to the shell body (10).

6. The steering gear according to claim 5, characterized in that: The shell body (10) further comprises an installation space (11), the steering screw (20) is arranged in the installation space (11), and the installation area is in communication with the installation space (11).

7. The steering gear according to claim 5, characterized in that: The rotating connection device (50) is suitable for being arranged at an end of the shell body (10) away from the steering wheel.

8. The steering gear according to claim 6, characterized in that: The shell body (10) is provided with a third installation channel, and the rotating connection device (50) is arranged in the third installation channel.

9. The steering gear according to claim 8, characterized in that: The rotating connection device (50) comprises: at least one first bearing (51), wherein the first bearing (51) is sleeved on the steering screw (20); a first fixing assembly (52), the first fixing assembly (52) being adapted to limit the position of the inner ring of the first bearing (51) in the axial direction of the steering screw (20); A second fixing assembly (53), wherein the second fixing assembly (53) is adapted to limit the position of the outer ring of the first bearing (51) in the axial direction of the steering screw (20).

10. The steering gear according to claim 9, characterized in that: The first fixing assembly (52) comprises: A backing ring (521), wherein the backing ring (521) is sleeved on the steering screw (20), wherein a first end of the backing ring (521) abuts against the worm wheel of the reduction assembly, and a second end of the backing ring (521) abuts against the inner ring of the first bearing (51); A first locking member (522), wherein the first locking member (522) is disposed at an end of the first bearing (51) away from the backing ring (521), the first locking member (522) is fixedly connected to the steering screw (20), and the first locking member (522) abuts against the inner ring of the first bearing (51).

11. The steering gear according to claim 9, characterized in that: The second fixing component (53) is located on a side of the first bearing (51) away from the installation space (11), the second fixing component (53) is fixedly connected to the shell body (10), and the outer ring of the first bearing (51) is respectively in contact with the second fixing component (53) and the shell body (10).

12. The steering gear according to claim 11, characterized in that: The second fixing assembly (53) comprises: An end cover (531), wherein the end cover (531) is threadedly connected to the inner wall surface of the third installation channel, and the end cover (531) abuts against the outer ring of the first bearing (51).

13. The steering gear according to claim 12, characterized in that: The second fixing assembly (53) comprises: A second locking member (532), wherein the second locking member (532) is disposed at an end of the end cover away from the first bearing (51), and the second locking member (532) is threadedly connected to the outer peripheral surface of the end cover (531).

14. The steering gear according to claim 13, characterized in that: The second locking member (532) abuts against the shell body (10).

15. The steering gear according to claim 9, characterized in that: The outer peripheral surface of the first bearing (51) is in contact with the inner wall surface of the third installation channel.

16. The steering gear according to claim 6, characterized in that: Also includes: A support seat (60), the support seat (60) is arranged in the installation space (11), the support seat (60) is fixedly connected to the shell body (10), and the steering screw (20) is supported by the support seat (60) and the two are rotatably connected.

17. The steering gear according to claim 16, characterized in that: Also includes: A sealing ring (62), wherein the sealing ring (62) is sleeved on the support seat (60), and the sealing ring (62) is used to seal the support seat (60) and the shell body (10).

18. A steering system, characterized in that: include: The steering gear according to any one of claims 1 to 17; A steering wheel is connected to the steering gear.

19. A vehicle, characterized in that: Includes the steering system of claim 18.

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