Steering gear and vehicle

Abstract

The utility model discloses a steering gear and a vehicle, and relates to but not limited to the field of steering gears. The steering gear comprises a shell, a rotating piece, a supporting bearing and a locking piece. The rotating piece is arranged in the shell. The supporting bearing is arranged on the outer side of the rotating piece in a sleeving mode and provided with a protruding part, and the protruding part protrudes in the radial direction of the supporting bearing. The locking piece is fixed to the inner side of the shell and tightly presses the protruding part in the first direction, so that the supporting bearing and the shell are relatively fixed. An included angle is formed between the first direction and the radial direction of the supporting bearing. According to the steering gear, the supporting bearing can be tightly connected to the shell in a pressing mode through the locking piece, and then the knocking abnormal sound generated by collision between the supporting bearing and the shell is greatly reduced.

Description

Technical Field

[0001] The present application relates to but is not limited to the field of steering gears, and in particular to a steering gear and a vehicle. Background Art

[0002] On the rotating part of the vehicle steering gear, a bearing is usually provided to enable the rotating part to rotate relative to the housing of the steering gear. In order to fix the bearing on the housing, a locking structure is usually provided. In the related art, the locking structure directly presses the end face of the outer ring and / or inner ring of the bearing to fix the bearing on the housing. However, the tightening force applied by the locking structure on the outer ring and / or inner ring of the bearing cannot be too large to avoid the bearing operation jamming problem caused by deformation of the outer ring and / or inner ring of the bearing due to excessive force. Therefore, when the vehicle is running, the force transmitted to the bearing by the ground through the wheels easily causes the bearing to collide with the housing, thereby generating abnormal knocking noise. Utility Model Content

[0003] The steering gear provided in the embodiment of the present application can enable the locking member to press the support bearing tightly against the housing, thereby greatly reducing the knocking noise caused by the collision between the support bearing and the housing.

[0004] In the first aspect, an embodiment of the present application provides a steering gear, including a housing, a rotating part, a support bearing and a locking part, wherein the rotating part is arranged in the housing; the support bearing is sleeved on the outer side of the rotating part, and the support bearing is provided with a protrusion, and the protrusion is arranged to protrude radially along the support bearing; the locking part is fixed to the inner side of the housing and presses the protrusion along a first direction, so that the support bearing is relatively fixed to the housing; wherein an angle is formed between the first direction and the radial direction of the support bearing.

[0005] In the steering gear provided by the embodiment of the present application, the housing is used to support and protect the structure disposed inside the housing, the rotating member can transmit torque as a transmission structure, the support bearing is used to support the rotating member so that the rotating member can rotate relative to the housing, and the locking member is used to fix the support bearing so that the support bearing is relatively fixed to the housing. In addition, the locking member presses the protruding portion of the support bearing so that the force point of the tightening force applied to the support bearing is located on the protruding portion, so that the outer ring and / or inner ring of the support bearing will not directly bear the tightening force, thereby greatly reducing the deformation of the outer ring and / or inner ring of the support bearing due to the force, so that when the locking member applies a large tightening force to the support bearing, the support bearing will not be deformed due to excessive force to cause the bearing operation jamming problem. Compared with the method of directly applying the tightening pressure to the outer ring and / or inner ring of the support bearing in the related art, since the force point of the tightening pressure applied to the support bearing in the present application is on the protrusion, the outer ring and / or inner ring of the support bearing will not directly bear the tightening pressure. Therefore, even if the locking member applies a large tightening pressure to the support bearing, the outer ring and / or inner ring of the support bearing will not be deformed due to excessive force to cause a jamming problem in the bearing operation. Therefore, the steering gear can enable the locking member to press the support bearing tightly onto the housing through the protrusion to overcome the force transmitted to the support bearing through the wheel from the ground, thereby greatly reducing the knocking noise caused by the collision between the support bearing and the housing.

[0006] In a possible implementation of the present application, the protrusion is provided on the outer ring of the support bearing.

[0007] Here, the protrusion is provided on the outer ring of the support bearing, which can facilitate the arrangement of the protrusion on the support bearing, thereby simplifying the structure of the support bearing.

[0008] In a possible implementation of the present application, along the axis of the support bearing, the protrusion is located in the middle of the outer ring of the support bearing.

[0009] Here, the protrusion is located in the middle of the outer ring of the support bearing to balance the force transmitted to the outer ring of the support bearing through the protrusion, thereby making the outer ring of the support bearing less likely to deform.

[0010] In a possible implementation of the present application, the protrusion is integrally formed with the outer ring of the support bearing.

[0011] Here, the protrusion is integrally formed with the outer ring of the support bearing to facilitate the production of the outer ring of the support bearing.

[0012] In a possible implementation of the present application, the protrusion is ring-shaped.

[0013] Here, the protrusion is annular, so that when the support bearing rotates around its axis to any position, the protrusion can contact the locking member, thereby facilitating the assembly between the locking member and the protrusion.

[0014] In a possible implementation of the present application, a stepped portion is provided on the inner side of the shell at a position corresponding to the protrusion, and one end of the protrusion along the axis of the supporting bearing is pressed against the stepped portion, and the other end is pressed against the locking member.

[0015] Here, the locking member can cooperate with the stepped portion directly formed on the inner side of the housing to press the protruding portion, so that the structure of the locking member is simpler.

[0016] In a possible implementation of the present application, the stepped portion is arranged around the inner side of the shell, and the locking member is arranged as a locking ring.

[0017] Here, the arrangement of the step portion and the locking ring enables the tightening force applied by them to be evenly distributed on the protrusion along the circumference of the support bearing, so that the force transmitted to the circumference of the support bearing through the protrusion is more uniform, thereby making the support bearing less likely to deform.

[0018] In a possible implementation of the present application, an external thread is provided on the radial outer periphery of the locking ring, and an internal thread is provided on the inner side of the shell at a position corresponding to the external thread. The external thread cooperates with the internal thread so that the locking ring is threadedly connected to the inner side of the shell.

[0019] Here, the locking ring is connected to the inner side of the housing by screwing, so as to improve the reliability of the connection between the locking ring and the inner side of the housing.

[0020] In a possible implementation of the present application, elastic members are respectively provided between the step portion and the protruding portion, and between the protruding portion and the locking member, and the elastic members may be in a compressed state along the axis of the support bearing.

[0021] Here, the elastic member can be in a compressed state along the axis of the support bearing to form an elastic margin between the step portion and the protrusion, and between the protrusion and the locking member, so that the protrusion can move elastically relative to the step portion, and the locking member can move relative to the protrusion, so that the steering process of the steering gear on the wheel is smoother.

[0022] In a second aspect, an embodiment of the present application provides a vehicle, comprising a steering operating member, wheels and a steering gear according to any one of the first aspects, wherein the steering gear is transmission-connected to the steering operating member and the wheels respectively.

[0023] The vehicle provided by the embodiment of the present application includes the steering gear provided by the first aspect of the present application, and thus can achieve the same effect, that is, the locking piece of the steering gear presses the protrusion of the support bearing so that the force point of the tightening pressure applied to the support bearing is on the protrusion, and the outer ring and / or inner ring of the support bearing will not directly bear the tightening pressure. Therefore, even if the locking piece applies a large tightening pressure to the support bearing, the outer ring and / or inner ring of the support bearing will not be deformed due to excessive force to cause a jamming problem in the bearing operation. Therefore, the steering gear can enable the locking piece to press the support bearing tightly against the shell through the protrusion to overcome the force transmitted to the support bearing through the wheel from the ground, thereby greatly reducing the knocking noise caused by the collision between the support bearing and the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic cross-sectional view of the steering gear provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 A local enlarged view at point A;

[0026] Figure 3 One of the cross-sectional structural schematic diagrams of a steering gear provided in an embodiment of the present application in which a protrusion is arranged on an outer ring;

[0027] Figure 4 The second schematic diagram of the cross-sectional structure of the steering gear provided in the embodiment of the present application in which the protrusion is arranged on the outer ring.

[0028] Reference numerals:

[0029] 1-housing; 11-stepped portion; 12-internal thread; 2-rotating member; 21-screw; 22-nut; 23-circulating ball; 3-support bearing; 31-protrusion; 32-outer ring; 33-bearing ball; 4-locking member; 41-locking ring; 411-external thread; 5-elastic member; X-axis of support bearing; Y-radial direction of support bearing; B-first direction. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0031] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0032] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0033] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0034] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0035] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0036] A steering gear is a deceleration transmission device that transforms the steering torque and steering angle from the steering wheel appropriately (mainly by reducing speed and increasing torque), and then outputs it to the steering rod mechanism, thereby steering the car. There are many types of steering gears, such as ball screw type, gear rack type, worm crank pin type, etc. Take the ball screw type steering gear as an example, the rotating part of the ball screw type steering gear is the ball screw structure.

[0037] On the rotating part of the vehicle steering gear, a bearing is usually provided to enable the rotating part to rotate relative to the housing of the steering gear. In order to fix the bearing on the housing, a locking structure is usually provided. In the related art, the locking structure directly presses the outer ring and / or inner ring of the bearing to fix the bearing on the housing. However, the tightening force applied by the locking structure on the outer ring and / or inner ring of the bearing cannot be too large to avoid deformation of the outer ring and / or inner ring of the bearing due to excessive force, and especially deformation of the recessed area of ​​the outer ring and / or inner ring of the bearing matching the bearing ball, which may cause the bearing to get stuck during operation. Therefore, when the vehicle is running, the force transmitted to the bearing by the ground through the wheels is likely to cause the bearing to collide with the housing, thereby generating abnormal knocking noise.

[0038] In view of this, see Figure 1 and Figure 2 An embodiment of the present application provides a steering gear, including a housing 1, a rotating member 2, a support bearing 3 and a locking member 4, wherein the rotating member 2 is arranged in the housing 1; the support bearing 3 is sleeved on the outside of the rotating member 2, and the support bearing 3 is provided with a protrusion 31, and the protrusion 31 is protruding along the radial direction Y of the support bearing 3; the locking member 4 is fixed to the inner side of the housing 1 and presses the protrusion 31 along the first direction B, so that the support bearing 3 and the housing 1 are relatively fixed; wherein an angle is formed between the first direction B and the radial direction Y of the support bearing 3.

[0039] In the embodiment of the present application, the rotating member 2 can be configured as a ball screw structure, a gear rack structure, a worm crank pin structure, etc., which can be determined according to the type of steering gear actually required, and the present application does not make specific restrictions on this. Taking the rotating member 2 as a ball screw structure as an example, see Figure 1 The ball screw structure includes a screw 21, circulating balls 23 and a nut 22, wherein the nut 22 is sleeved on the outer periphery of the screw 21, and the circulating balls 23 are arranged between the nut 22 and the screw 21, and are used to convert the rotational motion and linear operation between the nut 22 and the screw 21, and specifically: a driving member, such as a motor, is transmission-connected with the nut 22, and is used to drive the nut 22 to rotate around its axis. The nut 22 rotates and transmits power to the screw 21 after conversion by the circulating balls 23, so that the screw 21 can move linearly along its axis.

[0040] In the embodiment of the present application, the support bearing 3 includes an outer ring 32 and bearing balls 33, and the support bearing 3 may include an inner ring or may not include an inner ring. When the support bearing 3 includes an inner ring, the inner side wall of the outer ring 32 and the outer side wall of the inner ring are respectively provided with a recessed portion, and the bearing balls 33 are embedded in the recessed portion between the outer ring 32 and the inner ring; when the support bearing 3 does not include an inner ring, the inner side wall of the outer ring 32 and the outer side wall of the rotating member 2 are respectively provided with a recessed portion, and the bearing balls 33 are embedded in the recessed portion between the outer ring 32 and the rotating member 2, for example, see Figure 1A recessed portion is provided on the outer wall of the nut 22 at a position corresponding to the bearing ball 33 , and the bearing ball 33 is embedded in the recessed portion between the outer ring 32 and the nut 22 . At this time, the protrusion 31 is provided on the outer ring 32 .

[0041] In the embodiment of the present application, an angle is formed between the first direction B and the radial direction Y of the support bearing 3, that is, the locking member 4 cannot apply a tightening force to the protrusion 31 along the radial direction Y of the support bearing 3. The angle formed between the first direction B and the radial direction Y of the support bearing 3 can be 60 degrees, 75 degrees, 90 degrees, etc., for example, see Figure 1 , Figure 1 The angle formed between the first direction B and the radial direction Y of the support bearing 3 is 90 degrees, see Figure 3 , Figure 3 The angle formed between the first direction B and the radial direction Y of the support bearing 3 is less than 90 degrees, which can be determined according to the specific assembly method between the locking member 4 and the protruding portion 31. In addition, when the first direction B forms an angle of 90 degrees with the radial direction Y of the support bearing 3, the first direction B is parallel to the axis X of the support bearing 3.

[0042] In the steering gear provided by the embodiment of the present application, the housing 1 is used to support and protect the structure disposed inside the housing, the rotating member 2 can transmit torque as a transmission structure, the support bearing 3 is used to support the rotating member 2 so that the rotating member 2 can rotate relative to the housing 1, and the locking member 4 is used to fix the support bearing 3 so that the support bearing 3 is relatively fixed to the housing 1. In addition, the locking member 4 presses the protrusion 31 of the support bearing 3 so that the force point of the tightening force applied to the support bearing 3 is located on the protrusion 31, so the outer ring 32 and / or the inner ring of the support bearing 3 will not directly bear the tightening force, thereby greatly reducing the deformation of the outer ring 32 and / or the inner ring of the support bearing 3 due to the force, so that when the locking member 4 applies a large tightening force to the support bearing 3, the support bearing 3 will not be deformed due to excessive force to cause the bearing operation jamming problem. Compared with the method of directly applying the tightening pressure to the outer ring 32 and / or the inner ring of the support bearing 3 in the related art, since the force point of the tightening pressure applied to the support bearing 3 in the present application is on the protrusion 31, the outer ring 32 and / or the inner ring of the support bearing 3 will not directly bear the tightening pressure. Therefore, even if the locking member 4 applies a large tightening pressure to the support bearing 3, the outer ring 32 and / or the inner ring of the support bearing 3 will not be deformed due to excessive force to cause the bearing operation to be stuck. Therefore, the steering gear can enable the locking member 4 to press the support bearing 3 tightly onto the housing 1 through the protrusion 31 to overcome the force transmitted to the support bearing 3 by the ground through the wheel, thereby greatly reducing the knocking noise caused by the collision between the support bearing 3 and the housing 1.

[0043] In some possible embodiments of the present application, see Figure 1 and Figure 2 The protrusion 31 is arranged on the outer ring 32 of the support bearing 3 to facilitate the arrangement of the protrusion 31 on the support bearing 3, thereby simplifying the structure of the support bearing 3.

[0044] In the embodiment of the present application, the protrusion 31 can be set on the outer periphery of the outer ring 32, or can be set on the end face of the outer ring 32 along the axis X of the support bearing 3. At this time, the protrusion 31 needs to extend along the radial direction Y of the support bearing 3 and exceed the outer periphery of the outer ring 32, and the locking piece 4 is tightly pressed on the part of the protrusion 31 that exceeds the outer periphery of the outer ring 32.

[0045] In some other embodiments, the protrusion 31 can also be set on the end surface of the inner ring of the support bearing 3 along its axis X. In this case, the protrusion 31 needs to extend along the radial direction Y of the support bearing 3 and exceed the outer circumference of the outer ring 32 of the support bearing 3, and the locking piece 4 is tightly pressed on the part of the protrusion 31 that exceeds the outer circumference of the outer ring 32.

[0046] In some possible embodiments of the present application, see Figure 1 , Figure 2 and Figure 3 Along the axis X of the support bearing 3, the protrusion 31 is located in the middle position of the outer ring 32 of the support bearing 3 to balance the force transmitted to the outer ring 32 of the support bearing 3 through the protrusion 31, thereby making the outer ring 32 of the support bearing 3 less likely to deform.

[0047] In the present application examples, see Figure 2 The protrusion 31 and the outer ring 32 of the support bearing 3 can be arranged vertically, see Figure 3 The protrusion 31 and the outer ring 32 of the support bearing 3 can also be arranged to be inclined, and this application does not make any specific limitation on this.

[0048] In some other embodiments, see Figure 4 The protrusion 31 may also be located on the outer ring 32 of the support bearing 3 near the end surface.

[0049] In some possible embodiments of the present application, see Figure 1 and Figure 2 The protrusion 31 is integrally formed with the outer ring 32 of the support bearing 3 to facilitate the production of the outer ring 32 of the support bearing 3.

[0050] In some other embodiments, the protrusion 31 may also be fixedly connected to the outer ring 32 of the support bearing 3 by welding, screwing, etc., and the present application does not make any specific limitation on this.

[0051] In some possible embodiments of the present application, see Figure 1 and Figure 2The protrusion 31 is annular, so that when the support bearing 3 rotates around its axis to any position, the protrusion 31 can contact the locking member 4, thereby facilitating the assembly between the locking member 4 and the protrusion 31.

[0052] In some other embodiments, the protrusion 31 may also include a plurality of protrusions, and the plurality of protrusions are sequentially arranged on the support bearing 3 along the circumference of the support bearing 3, and the locking member 4 presses at least one protrusion.

[0053] In some possible embodiments of the present application, see Figure 1 and Figure 2 A stepped portion 11 is provided on the inner side of the housing 1 at a position corresponding to the protrusion 31 , and one end of the protrusion 31 along the axis X of the support bearing 3 is pressed against the stepped portion 11 , and the other end is pressed against the locking member 4 .

[0054] In the embodiment of the present application, the locking member 4 can cooperate with the stepped portion 11 directly formed on the inner side of the housing 1 to press the protruding portion 31 , so that the structure of the locking member 4 is simpler.

[0055] In some other embodiments, the stepped portion 11 may not be provided inside the housing 1. In this case, the locking member 4 includes two locking portions fixed at intervals on the inside of the housing 1 along the axis X of the support bearing 3, the protrusion 31 is provided between the two locking portions, and the two ends of the protrusion 31 along the axis X of the support bearing 3 are respectively pressed against the locking portions. In this arrangement, the locking member 4 can be understood as a clamp, and the two locking portions can be understood as two claws. The two locking portions fixed inside the housing 1 respectively apply opposing pressing forces to the two ends of the protrusion 31 along the axis X of the support bearing 3, so that the support bearing 3 and the housing 1 are relatively fixed.

[0056] In some possible embodiments of the present application, see Figure 1 and Figure 2 The stepped portion 11 is arranged around the inner side of the housing 1 , and the locking member 4 is arranged as a locking ring 41 .

[0057] In the embodiment of the present application, such arrangement of the step portion 11 and the locking ring 41 enables the tightening pressure exerted by them to be evenly distributed on the protrusion 31 along the circumference of the support bearing 3, so that the force transmitted to the circumference of the support bearing 3 through the protrusion 31 is more uniform, thereby making the support bearing 3 less likely to deform.

[0058] In some other embodiments, the locking member 4 may also be a block-shaped structure fixedly connected to the inner side of the shell 1, and the block-shaped locking member 4 presses the protrusion 31 on a local area along the circumference of the support bearing 3. Under this arrangement, the block-shaped locking member 4 can only apply a tightening pressure to a local area of ​​the protrusion 31, thereby making the tightening pressure on the protrusion 31 uneven.

[0059] In some possible embodiments of the present application, see Figure 1 and Figure 2 An external thread 411 is provided on the radial outer periphery of the locking ring 41 , and an internal thread 12 is provided on the inner side of the shell 1 at a position corresponding to the external thread 411 . The external thread 411 cooperates with the internal thread 12 so that the locking ring 41 is screwed onto the inner side of the shell 1 .

[0060] In the embodiment of the present application, the locking ring 41 is connected to the inner side of the housing 1 by screwing, so as to improve the reliability of the connection between the locking ring 41 and the inner side of the housing 1.

[0061] In addition, the locking ring 41 and the inner side of the shell 1 may be connected by means of snap-fitting, welding, etc., which is not specifically limited in the present application.

[0062] In some possible embodiments of the present application, see Figure 1 and Figure 2 Elastic members 5 are respectively arranged between the step portion 11 and the protruding portion 31 , and between the protruding portion 31 and the locking member 4 , and the elastic members 5 can be in a compressed state along the axis X of the support bearing 3 .

[0063] In the embodiment of the present application, the elastic member 5 can be an annular elastic structure such as a rubber ring, a silicone ring, etc., so as to better contact the two sides facing the step portion 11 and the protrusion 31, and the two sides facing the protrusion 31 and the locking member 4.

[0064] In the embodiment of the present application, the elastic member 5 can be in a compressed state along the axis X of the support bearing 3 to form an elastic margin between the step portion 11 and the protrusion 31, and between the protrusion 31 and the locking member 4, so that the protrusion 31 can move elastically relative to the step portion 11, and the locking member 4 can move relative to the protrusion 31, so that the steering process of the steering gear on the wheel is smoother.

[0065] The present application also provides a vehicle, see Figure 1 and Figure 2 , including a steering operating member, a wheel and any one of the above-mentioned steering gears, the steering gear being respectively connected to the steering operating member and the wheel in a transmission manner.

[0066] In the embodiments of the present application, the vehicle may be a car, a truck, etc., and the present application does not make any specific limitation on this.

[0067] In the embodiment of the present application, the steering operating member is a structure operated by the driver, such as a steering wheel. The steering gear is connected to the steering operating member through a steering rod with a universal joint, and is connected to the wheel through a steering tie rod mechanism. When the vehicle is driving and needs to turn, after the driver turns the steering operating member, the steering torque and steering angle applied to the steering operating member will be transmitted to the steering gear through the steering rod with a universal joint, so that the steering torque and steering angle from the steering operating member are appropriately transformed (mainly deceleration and torque increase) through the steering gear, and then transmitted to the wheel through the steering tie rod mechanism to complete the steering process of the vehicle.

[0068] In the vehicle provided in the embodiment of the present application, the locking piece 4 of the steering gear presses the protrusion 31 of the support bearing 3, so that the force point of the tightening pressure applied to the support bearing 3 is on the protrusion 31, and the outer ring 32 and / or the inner ring of the support bearing 3 will not directly bear the tightening pressure. Therefore, even if the locking piece 4 applies a large tightening pressure to the support bearing 3, the outer ring 32 and / or the inner ring of the support bearing 3 will not be deformed due to excessive force to cause a jamming problem in the bearing operation. Therefore, the steering gear can enable the locking piece 4 to press the support bearing 3 tightly onto the housing 1 through the protrusion 31, so as to overcome the force transmitted to the support bearing 3 by the ground through the wheel, thereby greatly reducing the knocking sound caused by the collision between the support bearing 3 and the housing 1.

[0069] It should be noted that during the installation of the steering gear of the vehicle, the maximum value of the force transmitted from the ground to the support bearing 3 through the wheels when the vehicle is running is obtained through simulation, testing and other methods, and then the tightening pressure applied by the locking member 4 on the protrusion 31 of the support bearing 3 can at least overcome the maximum force that can be transmitted from the ground to the support bearing 3 through the wheels, so that the locking member 4 presses the support bearing 3 tightly onto the housing 1 through the protrusion 31, thereby greatly reducing the knocking sound caused by the collision between the support bearing 3 and the housing 1.

[0070] The above are only preferred embodiments 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 applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A steering gear, characterized in that: include: Housing (1); A rotating member (2) is arranged in the housing (1); A support bearing (3) is sleeved on the outer side of the rotating member (2), the support bearing (3) is provided with a protrusion (31), and the protrusion (31) is protruding along the radial direction (Y) of the support bearing (3); A locking member (4) is fixed inside the housing (1) and presses the protruding portion (31) along a first direction (B) so that the support bearing (3) and the housing (1) are relatively fixed; wherein: The first direction (B) forms an angle with the radial direction (Y) of the support bearing (3).

2. The steering gear according to claim 1, characterized in that: The protrusion (31) is arranged on the outer ring (32) of the support bearing (3).

3. The steering gear according to claim 2, characterized in that: Along the axis (X) of the support bearing (3), the protrusion (31) is located at a middle position of the outer ring (32) of the support bearing (3).

4. The steering gear according to claim 2, characterized in that: The protruding portion (31) and the outer ring (32) of the support bearing (3) are integrally formed.

5. The steering gear according to claim 1, characterized in that: The protruding portion (31) is ring-shaped.

6. The steering gear according to any one of claims 1 to 5, characterized in that: A stepped portion (11) is provided on the inner side of the housing (1) at a position corresponding to the protruding portion (31); one end of the protruding portion (31) along the axis (X) of the support bearing (3) is pressed against the stepped portion (11), and the other end is pressed against the locking member (4).

7. The steering gear according to claim 6, characterized in that: The stepped portion (11) is arranged around the inner side of the housing (1), and the locking member (4) is arranged as a locking ring (41).

8. The steering gear according to claim 7, characterized in that: The locking ring (41) is provided with an external thread (411) on its radial outer periphery, and an internal thread (12) is provided on the inner side of the shell (1) at a position corresponding to the external thread (411), and the external thread (411) cooperates with the internal thread (12) so that the locking ring (41) is screwed onto the inner side of the shell (1).

9. The steering gear according to claim 6, characterized in that: An elastic member (5) is provided between the step portion (11) and the protruding portion (31), and between the protruding portion (31) and the locking member (4), respectively, and the elastic member (5) can be in a compressed state along the axis (X) of the support bearing (3).

10. A vehicle, characterized in that: include: Steering operating parts; wheel; The steering gear according to any one of claims 1 to 9, wherein the steering gear is drivingly connected to the steering operating member and the wheel respectively.

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