Steering gear and vehicle

Abstract

The utility model discloses a steering gear and a vehicle. The steering gear comprises a first section, a second section, a shell and a first bearing, the first section is suitable for being connected with a yoke, and the second section is suitable for being connected with a driving piece. The shell forms a containing cavity, and the first section, the second section and the first bearing are all arranged in the containing cavity. The first bearing is arranged between the first section and the shell, and the first bearing is a sliding bearing. Compared with a conical bearing and a roller bearing, the sliding bearing is small in size and compact in structure; compared with a supporting seat, a roller bearing and a knuckle bearing, the sliding bearing is light in weight. Therefore, the installation space can be saved, the weight of the steering gear can be conveniently controlled, and then the whole vehicle weight is controlled, and the whole vehicle space is arranged.

Description

Technical Field

[0001] This application relates to the technical field of lead screw supports, and particularly to a steering gear and a vehicle. Background Art

[0002] In recent years, with the development of automotive electrification, the lead screw, as an actuator, has been applied in products such as electric steering gears, electric operating mechanisms, and rear-wheel steering gears in the automotive field due to its strong load-bearing capacity, high operating precision, and smooth running characteristics. The lead screw needs to be well supported in actual applications to ensure its stable and efficient operation. However, the current lead screw support structure has problems of large volume and heavy weight. Summary of the Utility Model

[0003] Embodiments of this application provide a steering gear and a vehicle to solve at least one of the above-mentioned technical problems.

[0004] The steering gear according to the embodiments of this application includes a first section, a second section, a housing, and a first bearing. The first section is adapted to be connected to a joint fork, and the second section is adapted to be connected to a driving member.

[0005] The housing forms a receiving cavity, and the first section, the second section, and the first bearing are all arranged in the receiving cavity.

[0006] The first bearing is arranged between the first section and the housing, and the first bearing is a sliding bearing.

[0007] In some embodiments, the steering gear further includes a bearing assembly, and the bearing assembly is arranged between the second section and the housing, and the bearing assembly is a rotating bearing.

[0008] In some embodiments, the first bearing is arranged at one end of the first section away from the second section and is in interference fit with the housing, and the first bearing is used to provide a radial supporting force for the first section.

[0009] In some embodiments, the housing includes a first limiting portion, and the first limiting portion is used to limit the first bearing axially on the first section.

[0010] In some embodiments, the first limiting portion includes a connected first limiting surface and a second limiting surface, and the plane where the second limiting surface is located is perpendicular to the axial direction of the first section.

[0011] In some embodiments, the bearing assembly includes a second bearing and a third bearing. The second bearing is arranged at one end of the second section away from the first section and is in interference fit with the housing, and the third bearing is arranged at one end of the second section close to the first section and is in interference fit with the housing.

[0012] In some embodiments, the housing further includes a second limiting portion for axially limiting the second bearing in the second section.

[0013] In some embodiments, the plane where the second limiting portion is located is perpendicular to the axial direction of the second section.

[0014] In some embodiments, the housing further includes a third limiting portion for radially and axially limiting the third bearing in the second section.

[0015] In some embodiments, the third limiting portion includes a connected third limiting surface and a fourth limiting surface. The third limiting surface is perpendicular to the radial direction of the second section, and the plane where the fourth limiting surface is located is perpendicular to the axial direction of the second section.

[0016] In some embodiments, the second bearing is a needle bearing for providing a radial supporting force to the second section.

[0017] The third bearing is an angular contact ball bearing for providing a radial supporting force and an axial supporting force to the second section.

[0018] In some embodiments, the first section is a moving member, the second section is a rotating member, the moving member is in transmission connection with the rotating member, and the moving member moves axially under the action of the rotating member.

[0019] In some embodiments, the moving member is a lead screw and the rotating member is a lead screw nut.

[0020] The vehicle according to the embodiment of the present application includes a steering gear according to any of the above embodiments.

[0021] In the steering gear and the vehicle according to the embodiment of the present application, a first bearing is disposed between the first section and the housing to support the first section. The first bearing is a sliding bearing. Compared with a tapered bearing and a roller bearing, the sliding bearing has a smaller size and a more compact structure; compared with a support seat, a roller bearing and a spherical plain bearing, the sliding bearing is lighter in weight. Thus, the installation space can be saved, and the weight of the steering gear can be easily controlled, thereby controlling the weight of the whole vehicle and arranging the space of the whole vehicle, etc.

[0022] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings. Among them:

[0024] Figure 1 is a schematic cross-sectional structure diagram of an electric steering mechanism according to some embodiments of the present application;

[0025] Figure 2 is a schematic cross-sectional structure diagram of an electric steering mechanism according to some embodiments of the present application;

[0026] Figure 3 is a schematic diagram of the force analysis of an angular contact ball bearing according to some embodiments of the present application;

[0027] Figure 4 is a schematic structure diagram of a vehicle according to some embodiments of the present application.

[0028] Description of reference numerals:

[0029] Steering gear 100, first section 10, second section 20, housing 30, first limiting portion 31, first limiting surface 311, second limiting surface 312, second limiting portion 32, third limiting portion 33, third limiting surface 331, fourth limiting surface 332, first bearing 41, bearing assembly 42, second bearing 421, third bearing 422, joint fork 50, driving member 60, transmission member 70, vehicle 1000. Specific embodiments

[0030] The following will describe in detail the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals always represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0031] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a steering gear 100. The steering gear 100 includes a first section 10, a second section 20, a housing 30, and a first bearing 41. The first section 10 is adapted to be connected to the joint fork 50, and the second section 20 is adapted to be connected to the driving member 60. The housing 30 forms a receiving cavity, and the first section 10, the second section 20, and the first bearing 41 are all disposed in the receiving cavity. The first bearing 41 is disposed between the first section 10 and the housing 30, and the first bearing 41 is a sliding bearing.

[0032] In the steering gear 100 according to the embodiment of the present application, the first bearing 41 is arranged between the first section 10 and the housing 30 to support the first section 10. The first bearing 41 is a sliding bearing. Compared with a tapered bearing and a roller bearing, the sliding bearing has a smaller size and a more compact structure. Compared with a support seat, a roller bearing, and a spherical plain bearing, the sliding bearing is lighter in weight. In this way, the installation space can be saved, and it is convenient to control the weight of the steering gear 100, thereby controlling the weight of the whole vehicle and arranging the space of the whole vehicle, etc.

[0033] Specifically, the first section 10 is connected to the second section 20, and a transmission component such as a lead screw can be formed. The first section 10 is used to be connected to the knuckle 50. The first section 10 and the knuckle 50 can be fixedly connected through a connecting piece (such as a screw). The first section 10 can be installed on the wheel via the knuckle 50. The second section 20 is used to be connected to the driving member 60 and is used to drive the steering gear 100 to work.

[0034] The housing 30 of the steering gear 100 forms a receiving cavity, and the first section 10, the second section 20, and the first bearing 41 are all arranged in the receiving cavity. The housing 30 can be made of a metal material to protect the components arranged in the receiving cavity. The first bearing 41 is arranged between the first section 10 and the housing 30 and is used to support the first section 10 to reduce the friction coefficient of the first section 10 during movement and ensure the rotational accuracy of the first section 10. The first bearing 41 is a sliding bearing and is in an annular shape, surrounding the first section 10. A sliding bearing refers to a bearing that works under sliding friction.

[0035] In the related art, when using a support seat, a tapered bearing, a roller bearing, or a spherical plain bearing to support the lead screw, there are problems of large volume and heavy weight, which affect the overall structural size of the steering gear 100.

[0036] In the embodiment of the present application, a sliding bearing is used to support the first section 10. Compared with a tapered bearing and a roller bearing, the sliding bearing has a smaller size and a more compact structure. Compared with a support seat, a roller bearing, and a spherical plain bearing, the sliding bearing is lighter in weight. In this way, the installation space can be saved, and it is convenient to control the weight of the steering gear 100, thereby controlling the weight of the whole vehicle and arranging the space of the whole vehicle, etc.

[0037] Please refer to Figure 1 and Figure 2 , in some embodiments, the first section 10 is a moving part, the second section 20 is a rotating part, the moving part is in transmission connection with the rotating part, and the moving part moves axially under the action of the rotating part.

[0038] Specifically, the first section 10 is a moving part, and the second section 20 is a rotating part. The steering gear 100 further includes a transmission part 70, and the transmission part 70 can be a belt. The second section 20 is drivingly connected to the driving part 60 through the transmission part 70, and the driving part 60 can be a motor. The driving part 60 is used to output power, and the transmission part 70 transmits the power output by the driving part 60 to the second section 20, causing the second section 20 to rotate around the central axis (such as Figure 1 the axis O in

[0039] ), and driving the first section 10 to perform a linear motion along the axial direction.

[0040] Please refer to Figure 1 and Figure 2 , in some embodiments, the first bearing 41 is disposed at one end of the first section 10 away from the second section 20, and is in interference fit with the housing 30. The first bearing 41 is used to provide a radial supporting force for the first section 10.

[0041] Specifically, the first bearing 41 is disposed at one end of the first section 10 away from the second section 20 to support one end of the first section 10 away from the second section 20. The first bearing 41 is in interference fit with the housing 30, that is to say, the diameter of the circular hole formed by the inner surface of the housing 30 is smaller than the outer diameter of the first bearing 41. In this way, the installation space of the housing 30 can be saved, which is convenient for arranging the vehicle space, etc.

[0042] The first bearing 41 is disposed around the first section 10, and the inner side surface of the first bearing 41 abuts against the outer side surface of the first section 10, and can bear radial loads, so as to provide a radial supporting force for the first section 10. The magnitude of the radial force that the first bearing 41 needs to bear can be obtained through theoretical calculation, and then information such as the size and model of the required sliding bearing can be calculated.

[0043] Please refer to Figure 1 and Figure 2 , in some embodiments, the housing 30 includes a first limiting portion 31, and the first limiting portion 31 is used to limit the first bearing 41 in the axial direction of the first section 10.

[0044] Specifically, when installing the first bearing 41, a certain pressure can be applied by using a press to press the first bearing 41 into the housing 30. During the process of pressing the first bearing 41 into the housing 30, the first limiting portion 31 can limit the first bearing 41 in the axial direction of the first section 10.

[0045] Please refer to Figure 2, in some embodiments, the first limiting portion 31 includes a connected first limiting surface 311 and a second limiting surface 312, and the plane where the second limiting surface 312 is located is perpendicular to the axial direction of the first section 10.

[0046] Specifically, the first limiting portion 31 includes a connected first limiting surface 311 and a second limiting surface 312. The first limiting surface 311 and the second limiting surface 312 surround the first section 10, and the plane where the second limiting surface 312 is located is perpendicular to the axial direction of the first section 10. During the process of pressing the first bearing 41 into the housing 30, the outer side surface of the first bearing 41 abuts against the first limiting surface 311.

[0047] The first bearing 41 includes two surfaces perpendicular to the axial direction of the first section 10, and the two surfaces are opposite to each other along the axial direction of the first section 10. After pressing the first bearing 41 into the housing 30 by a certain distance, one surface close to the second section 20 abuts against the second limiting surface 312. The second limiting surface 312 prevents the first bearing 41 from moving axially, thereby realizing the axial limiting of the first bearing 41 on the first section 10. In this way, the installation position of the first bearing 41 is fixed relative to the housing 30, ensuring that the first bearing 41 is installed at the same position of the housing 30 each time to meet the design requirements, and further ensuring the consistency of the production of the steering gear 100.

[0048] Please refer to Figure 1 and Figure 2 , in some embodiments, the steering gear 100 further includes a bearing assembly 42, and the bearing assembly 42 is arranged between the second section 20 and the housing 30. The bearing assembly 42 is a rotating bearing.

[0049] Specifically, the bearing assembly 42 is arranged between the second section 20 and the housing 30 to support the second section 20. The bearing assembly 42 is a rotating bearing to support the rotational movement of the second section 20, which can reduce the friction during the movement of the second section 20 and enable the second section 20 to rotate around a fixed axis.

[0050] Please refer to Figure 1 and Figure 2 , in some embodiments, the bearing assembly 42 includes a second bearing 421 and a third bearing 422. The second bearing 421 is arranged at one end of the second section 20 far from the first section 10 and is in interference fit with the housing 30. The third bearing 422 is arranged at one end of the second section 20 close to the first section 10 and is in interference fit with the housing 30.

[0051] Specifically, the second bearing 421 is disposed at one end of the second section 20 away from the first section 10, and the third bearing 422 is disposed at one end of the second section 20 close to the first section 10, so that the second bearing 421 and the third bearing 422 can respectively support both ends of the second section 20. The second bearing 421 is in interference fit with the housing 30, that is to say, the diameter of the circular hole formed by the inner surface of the housing 30 is smaller than the outer diameter of the second bearing 421. The third bearing 422 is in interference fit with the housing 30, that is to say, the diameter of the circular hole formed by the inner surface of the housing 30 is smaller than the outer diameter of the third bearing 422. In this way, the installation space of the housing 30 can be saved, and it is convenient to arrange the vehicle space, etc.

[0052] In the related art, bearings or support seats are provided at both ends of the lead screw to support the lead screw. In the embodiment of the present application, the first section 10 is supported by the first bearing 41, and the second section 20 is supported by the bearing assembly 42, and the bearing assembly 42 includes a second bearing 421 and a third bearing 422. The first bearing 41, the second bearing 421, and the third bearing 422 form three fulcrums to jointly support the lead screw composed of the first section 10 and the second section 20. In this way, a better support effect is achieved.

[0053] Please refer to Figure 1 and Figure 2 In some embodiments, the housing 30 further includes a second limiting portion 32, and the second limiting portion 32 is used to limit the second bearing 421 in the axial direction of the second section 20.

[0054] Specifically, when installing the second bearing 421, a certain pressure can be applied by using a press to press the second bearing 421 into the housing 30. The housing 30 includes a second limiting portion 32, the second section 20 includes opposite first and second ends, the first end is away from the first section 10, the second end is close to the first section 10, and the second limiting portion 32 is disposed at a position corresponding to the first end. During the process of pressing the second bearing 421 into the housing 30, the second limiting portion 32 can limit the second bearing 421 in the axial direction of the second section 20.

[0055] Please refer to Figure 2 In some embodiments, the plane where the second limiting portion 32 is located is perpendicular to the axial direction of the second section 20.

[0056] Specifically, the second limiting portion 32 is a limiting surface surrounding the second section 20, and the plane where the second limiting portion 32 is located is perpendicular to the axial direction of the second section 20. The second bearing 421 includes two surfaces perpendicular to the axial direction of the second section 20, and the two surfaces are opposite to each other along the axial direction of the second section 20. After the second bearing 421 is pressed into the housing 30 by a certain distance, the surface away from the first section 10 abuts against the second limiting portion 32. The second limiting portion 32 prevents the second bearing 421 from moving axially, thereby realizing the axial limitation of the second bearing 421 on the second section 20. In this way, the installation position of the second bearing 421 is fixed relative to the housing 30, ensuring that the second bearing 421 is installed at the same position of the housing 30 each time to meet the design requirements, and further ensuring the consistency of the production of the steering gear 100.

[0057] Please refer to Figure 1 and Figure 2 , in some embodiments, the housing 30 further includes a third limiting portion 33, and the third limiting portion 33 is used to limit the third bearing 422 in the radial and axial directions of the second section 20.

[0058] Specifically, when installing the third bearing 422, a certain pressure can be applied by using a press to press the third bearing 422 into the housing 30. The housing 30 includes a third limiting portion 33, the second section 20 includes a first end and a second end opposite to each other, the first end is far from the first section 10, the second end is close to the first section 10, and the third limiting portion 33 is arranged at a position corresponding to the second end. During the process of pressing the third bearing 422 into the housing 30, the third limiting portion 33 can limit the third bearing 422 in the radial and axial directions of the second section 20.

[0059] Please refer to Figure 2 , in some embodiments, the third limiting portion 33 includes a connected third limiting surface 331 and a fourth limiting surface 332, the third limiting surface 331 is perpendicular to the radial direction of the second section 20, and the plane where the fourth limiting surface 332 is located is perpendicular to the axial direction of the second section 20.

[0060] Specifically, the third limiting portion 33 includes a connected third limiting surface 331 and a fourth limiting surface 332, the third limiting surface 331 and the fourth limiting surface 332 surround the second section 20, and the third limiting surface 331 is perpendicular to the radial direction of the second section 20. During the process of pressing the third bearing 422 into the housing 30, the outer side surface of the third bearing 422 abuts against the third limiting surface 331, and the third limiting surface 331 prevents the third bearing 422 from moving radially, thereby realizing the radial limitation of the third bearing 422 on the second section 20.

[0061] The third bearing 422 includes two faces perpendicular to the axial direction of the second section 20, and the two faces are opposite to each other along the axial direction of the second section 20. The plane where the fourth limiting face 332 is located is perpendicular to the axial direction of the second section 20. After the third bearing 422 is pressed into the housing 30 by a certain distance, the face close to the first section 10 abuts against the fourth limiting face 332. The fourth limiting face 332 prevents the third bearing 422 from moving axially, thereby realizing the axial limitation of the third bearing 422 on the second section 20. In this way, the installation position of the third bearing 422 is fixed relative to the housing 30, ensuring that the third bearing 422 is installed at the same position of the housing 30 each time to meet the design requirements, and further ensuring the consistency of the production of the steering gear 100.

[0062] Please refer to Figure 1 and Figure 2 , in some embodiments, the second bearing 421 is a needle roller bearing, and the second bearing 421 is used to provide a radial supporting force for the second section 20.

[0063] Specifically, the second bearing 421 is a needle roller bearing and is in an annular shape. The second bearing 421 surrounds the second section 20, and the inner side surface of the second bearing 421 abuts against the second section 20, and can bear radial loads, thereby providing a radial supporting force for the second section 20.

[0064] A needle roller bearing is a roller bearing with cylindrical rollers. The rollers of the needle roller bearing are thin and long, and such rollers are called needle rollers. Although the cross-section of the needle roller bearing is small, it still has a high load-bearing capacity. The needle roller bearing is equipped with a plurality of thin and long rollers, and the radial structure is compact. When the inner diameter size and load capacity of the needle roller bearing are the same as those of other types of bearings, the outer diameter of the needle roller bearing is the smallest. The magnitude of the radial force that the second bearing 421 needs to bear can be obtained through theoretical calculation, and then information such as the size and model of the required needle roller bearing can be calculated.

[0065] In the related art, using a support seat, a tapered bearing, a roller bearing or a spherical plain bearing to support the lead screw has the problems of large volume and heavy weight, which affects the overall structural size of the support assembly. In the embodiments of the present application, a needle roller bearing is used to support the second section 20. Compared with tapered bearings and roller bearings, the needle roller bearing has a smaller size and a more compact structure. Compared with support seats, roller bearings and spherical plain bearings, the needle roller bearing is lighter in weight. In this way, the installation space of the second bearing 421 can be saved, and it is convenient to control the weight of the steering gear 100, and then control the weight of the whole vehicle and arrange the space of the whole vehicle, etc.

[0066] Please refer to Figures 1 to 3 , in some embodiments, the third bearing 422 is an angular contact ball bearing, and the third bearing 422 is used to provide a radial supporting force and an axial supporting force for the second section 20.

[0067] Specifically, the third bearing 422 is an angular contact ball bearing and is in an annular shape. The third bearing 422 surrounds the second section 20. The inner side surface of the third bearing 422 abuts against the second section 20. The third bearing 422 includes two surfaces perpendicular to the axial direction of the second section 20, and the surface away from the first section 10 also abuts against the second section 20. An angular contact ball bearing is a rotary bearing.

[0068] Raceways are provided on opposite sides of the inner and outer rings of the angular contact ball bearing to accommodate the balls. The angle between the line connecting the contact points of the balls with the inner and outer rings and the perpendicular line to the axis of the angular contact ball bearing is the contact angle (such as Figure 3 the contact angle θ in Figure 3 ). The contact angle enables the angular contact ball bearing to bear radial loads (i.e., Figure 3 the upward radial force and the downward radial force in

[0069] and axial loads (i.e.,

[0070] the leftward axial force and the rightward axial force in

[0071] ), so as to provide radial support force and axial support force for the second section 20, and it is the main force-bearing unit among the first bearing 41, the second bearing 421, and the third bearing 422. Figure 1 and Figure 4 ). The radial force that the third bearing 422 needs to bear can be theoretically calculated according to the relative positional relationship among the first bearing 41, the second bearing 421, and the third bearing 422. The axial force that the third bearing 422 needs to bear can be theoretically calculated according to the magnitude of the rack force that the second section 20 can bear. After calculating the radial force and axial force that the third bearing 422 needs to bear, the required size, model, and other information of the third bearing 422 can be calculated. In the above calculation process, the safety factor of the third bearing 422 needs to be considered to ensure that the third bearing 422 will not undergo plastic deformation or fatigue failure due to exceeding the load.

[0072] In summary, in the steering gear 100 and the vehicle 1000 according to the embodiments of the present application, the first bearing 41 is disposed between the first section 10 and the housing 30 to support the first section 10. The first bearing 41 is a sliding bearing. Compared with tapered bearings and roller bearings, the sliding bearing has a smaller size and a more compact structure; compared with support seats, roller bearings and spherical plain bearings, the sliding bearing is lighter in weight. In this way, the installation space can be saved, and it is convenient to control the weight of the steering gear 100, and further control the weight of the whole vehicle and arrange the space of the whole vehicle, etc.

[0073] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0074] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0075] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0076] The foregoing disclosure provides many different embodiments or examples for implementing the different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0077] In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0078] Although the embodiments of the present application have been shown and described above, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A steering gear (100), characterized in that: The invention comprises a first section (10), a second section (20), a housing (30) and a first bearing (41), wherein the first section (10) is suitable for connecting with a yoke (50), and the second section (20) is suitable for connecting with a driving member; The housing (30) forms a receiving cavity, and the first section (10), the second section (20) and the first bearing (41) are all arranged in the receiving cavity; The first bearing (41) is arranged between the first section (10) and the housing (30), and the first bearing (41) is a sliding bearing.

2. The steering gear (100) according to claim 1, characterized in that: The steering gear (100) further comprises a bearing assembly (42), wherein the bearing assembly (42) is arranged between the second section (20) and the housing (30), and the bearing assembly (42) is a rotary bearing.

3. The steering gear (100) according to claim 1, characterized in that: The first bearing (41) is arranged at one end of the first section (10) away from the second section (20) and is interference fit with the housing (30). The first bearing (41) is used to provide radial support force for the first section (10).

4. The steering gear (100) according to claim 1, characterized in that: The housing (30) comprises a first limiting portion (31), and the first limiting portion (31) is used to limit the first bearing (41) in the axial direction of the first section (10).

5. The diverter (100) according to claim 4, characterized in that: The first limiting portion (31) comprises a first limiting surface (311) and a second limiting surface (312) which are connected to each other, and the plane where the second limiting surface (312) is located is perpendicular to the axial direction of the first section (10).

6. The steering gear (100) according to claim 2, characterized in that: The bearing assembly (42) comprises a second bearing (421) and a third bearing (422), wherein the second bearing (421) is arranged at an end of the second section (20) away from the first section (10) and is interference fit with the housing (30), and the third bearing (422) is arranged at an end of the second section (20) close to the first section (10) and is interference fit with the housing (30).

7. The diverter (100) according to claim 6, characterized in that: The housing (30) further comprises a second limiting portion (32), wherein the second limiting portion (32) is used to limit the second bearing (421) in the axial direction of the second section (20).

8. The diverter (100) according to claim 7, characterized in that: The plane where the second limiting portion (32) is located is perpendicular to the axial direction of the second section (20).

9. The diverter (100) according to claim 6, characterized in that: The housing (30) further comprises a third limiting portion (33), wherein the third limiting portion (33) is used to limit the third bearing (422) in the radial direction and the axial direction of the second section (20).

10. The diverter (100) according to claim 9, characterized in that: The third limiting portion (33) comprises a third limiting surface (331) and a fourth limiting surface (332) which are connected, the third limiting surface (331) being perpendicular to the radial direction of the second section (20), and the plane where the fourth limiting surface (332) is located being perpendicular to the axial direction of the second section (20).

11. The steering gear (100) according to claim 6, characterized in that: The second bearing (421) is a needle bearing, and the second bearing (421) is used to provide radial support force for the second section (20); The third bearing (422) is an angular contact ball bearing, and the third bearing (422) is used to provide radial support force and axial support force for the second section (20).

12. The steering gear (100) according to claim 1, characterized in that: The first section (10) is a moving part, and the second section (20) is a rotating part. The moving part is transmission-connected with the rotating part, and the moving part moves axially under the action of the rotating part.

13. The diverter (100) according to claim 12, characterized in that: The moving part is a screw rod, and the rotating part is a screw rod nut.

14. A vehicle (1000), characterized in that: A diverter (100) comprising any one of claims 1 to 13.

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