CN221820116U - Steering gear assembly and vehicle - Google Patents

Abstract

The application discloses a steering gear assembly and a vehicle, wherein the steering gear assembly comprises: the shell is movably provided with a screw rod, and a mounting groove is formed in the shell; the bearing outer ring is arranged in the mounting groove and sleeved on the periphery of the screw rod; the bearing inner ring is rotatably arranged on the bearing outer ring and is supported on the periphery of the screw rod; wherein, in the radial direction of the lead screw, the cross-sectional area of the mounting groove is greater than the cross-sectional area of the bearing outer race, the bearing outer race is selectively movable within the mounting groove to adjust the axis of the bearing inner race. According to the steering gear assembly provided by the embodiment of the application, the position of the bearing inner ring can be adjusted to change the tension of the transmission piece.

Description

Steering gear assembly and vehicle

Technical Field

The present invention relates to the field of steering gears, and more particularly to a steering gear assembly and a vehicle

Background Art

In the related art, the center distances of the large and small pulleys in the electric steering gear of a car cannot be assembled in a fixed position. In order to adjust the appropriate belt tension, a rotating stop is usually designed on the motor. The motor axis is eccentric to the stop. The motor shaft is offset by rotating the motor stop, thereby changing the center distances of the large and small pulleys to adjust the belt tension. However, existing motors are universal parts. In order to adjust the appropriate belt tension, the motor stop design needs to be changed, thereby increasing the development cost of the motor.

Utility Model Content

The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a steering gear assembly, which can adjust the position of the inner ring of the bearing to change the tension of the transmission member.

The application also provides a vehicle having the steering gear assembly.

According to the steering gear assembly of the embodiment of the present application, it includes: a housing, on which a screw rod is movably arranged, and a mounting groove is formed in the housing; a bearing outer ring, which is arranged in the mounting groove and sleeved on the outer periphery of the screw rod; a bearing inner ring, which is rotatably arranged on the bearing outer ring and supported on the outer periphery of the screw rod; wherein, in the radial direction of the screw rod, the cross-sectional area of the mounting groove is larger than the cross-sectional area of the bearing outer ring, and the bearing outer ring can be selectively moved in the mounting groove to adjust the axis of the bearing inner ring.

According to the steering gear assembly of the embodiment of the present application, the steering gear assembly has a shell with a mounting groove formed in the shell, the outer ring of the bearing is arranged in the mounting groove and sleeved on the outer periphery of the inner ring of the bearing, the inner ring of the bearing is sleeved on the outer periphery of the screw rod, and in the radial direction of the screw rod, the cross-sectional area of the mounting groove is larger than the cross-sectional area of the outer ring of the bearing. Therefore, when the staff moves the position of the outer ring of the bearing in the mounting groove, the axial position of the inner ring of the bearing can be changed, thereby changing the tensioning force of the transmission member, so that the transmission member can effectively transmit power, thereby reducing the cost of the steering gear.

In some embodiments of the present application, the mounting groove includes: a first groove body, the first groove body is located on the end face of the shell and is recessed toward the interior of the shell, the diameter of the first groove body is greater than or equal to the diameter of the bearing outer ring, and the bearing outer ring is arranged in the first groove body; a second groove body, the second groove body is located at at least part of the outer periphery of the first groove body, and at least part of the bearing outer ring can be selectively moved toward the second groove body to adjust the axis of the bearing inner ring.

In some embodiments of the present application, the second slot body is located on at least one side of the first slot body in the radial direction.

In some embodiments of the present application, a first mounting hole is formed in the first groove body, and a second mounting hole is formed on the outer ring of the bearing, penetrating along the axial direction and arranged corresponding to the first mounting hole.

In some embodiments of the present application, the first mounting holes are configured as a plurality of holes spaced apart in the circumferential direction of the first slot body, and the second mounting holes are configured as a plurality of holes arranged in a one-to-one correspondence with the plurality of the first mounting holes.

In some embodiments of the present application, the steering gear assembly further includes: a driving member, which is disposed on the housing and has a driving shaft extending in the axial direction of the screw rod, and the driving shaft is linked to the screw rod.

In some embodiments of the present application, the steering gear assembly further includes: a transmission member, which is disposed on the outer peripheral wall of the drive shaft and the inner ring of the bearing and is suitable for linking the drive shaft with the inner ring of the bearing.

In some embodiments of the present application, an extension portion extending in a direction away from the bearing outer ring is formed on the bearing inner ring, and the transmission member is sleeved on the surface of the extension portion.

In some embodiments of the present application, the steering gear assembly also includes: a first pulley, the first pulley is sleeved on the outer peripheral wall of the drive shaft, and one end of the transmission member is sleeved on the surface of the first pulley; a second pulley, the second pulley is sleeved on the outer peripheral wall of the extension part, and the other end of the transmission member is sleeved on the surface of the second pulley.

The following is a brief description of a vehicle according to an embodiment of the present application.

According to the embodiment of the present application, the vehicle is provided with the steering gear assembly of the above-mentioned embodiment. Since the vehicle of the embodiment of the present application is provided with the steering gear assembly of the above-mentioned embodiment, a mounting groove is formed in the housing of the steering gear assembly of the vehicle. The outer ring of the bearing is arranged in the mounting groove and is sleeved on the outer periphery of the inner ring of the bearing in the radial direction of the screw rod. The cross-sectional area of the mounting groove is larger than the cross-sectional area of the outer ring of the bearing. Therefore, when the staff moves the position of the outer ring of the bearing in the mounting groove, the axial position of the inner ring of the bearing can be changed, thereby changing the tensioning force of the transmission member, so that the transmission member can effectively transmit power and reduce the cost of the steering gear.

Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is a schematic structural diagram of a steering gear assembly according to an embodiment of the present application;

FIG2 is a schematic front view of FIG1 ;

FIG3 is a schematic cross-sectional view of the steering gear assembly in FIG1 ;

FIG4 is a schematic structural diagram of the housing in FIG1 ;

FIG. 5 is a schematic diagram of the cooperation between the bearing outer ring, the bearing inner ring and the screw in FIG. 1 .

Reference numerals:

10. Steering gear assembly; 11. Housing; 111. Screw rod; 112. Mounting groove; 1121. First groove body; 1122. Second groove body; 113. First mounting hole; 12. Bearing outer ring; 121. Second mounting hole; 122. Adjustment hole; 13. Bearing inner ring; 131. Extension; 14. Drive member; 141. Drive shaft; 15. Transmission member; 16. First pulley; 17. Second pulley; 101. Bolt; 102. Ball.

DETAILED DESCRIPTION

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

The following describes the steering gear assembly 10 according to an embodiment of the present application with reference to Figures 1 to 5. The steering gear assembly 10 includes a housing 11, a bearing outer ring 12 and a bearing inner ring 13. A screw rod 111 is movably arranged on the housing 11. A mounting groove 112 is formed in the housing 11. The bearing outer ring 12 is arranged in the mounting groove 112 and is sleeved on the outer periphery of the screw rod 111. The bearing inner ring 13 is rotatably arranged on the bearing outer ring 12 and supported on the outer periphery of the screw rod 111; wherein, in the radial direction of the screw rod 111, the cross-sectional area of the mounting groove 112 is larger than the cross-sectional area of the bearing outer ring 12, and the bearing outer ring 12 can selectively move in the mounting groove 112 to adjust the axis of the bearing inner ring 13.

At present, the center distance of the large and small pulleys in the electric steering gear of the automobile cannot be assembled in a fixed position. In order to adjust the appropriate belt tension, a rotating stop is usually designed on the motor. The motor axis is eccentric to the stop. The motor shaft is offset by rotating the motor stop, thereby achieving a change in the center distance of the large and small pulleys to adjust the belt tension. However, the existing motors are all universal parts. In order to adjust the appropriate belt tension, the motor stop design needs to be changed, which increases the development cost of the motor.

As shown in Figures 1 to 3, specifically, the steering gear assembly 10 may include a housing 11 and a bearing assembly. A mounting groove 112 may be formed on the housing 11, a through hole is formed in the mounting groove 112, at least a portion of the screw rod 111 may be disposed in the through hole, and the screw rod 111 may be movable along the axial direction relative to the housing 11, the bearing assembly is sleeved on the outer periphery of the screw rod 111, and at least a portion of the bearing assembly may be received in the mounting groove 112 and abut against the inner wall of the mounting groove 112.

Further, the bearing assembly may include a bearing outer ring 12 and a bearing inner ring 13, the bearing outer ring 12 may be arranged in the mounting groove 112, and the bearing outer ring 12 may be sleeved on the outer periphery of the screw rod 111, the bearing outer ring 12 and the mounting groove 112 may be detachably connected by snapping or plugging, or the bearing outer ring 12 and the mounting groove 112 may be detachably connected by bolts or threads, the bearing inner ring 13 may be arranged between the bearing outer ring 12 and the screw rod 111, and a ball 102 is arranged between the bearing inner ring 13 and the bearing outer ring 12. Specifically, when the bearing outer ring 12 is fixed to the housing 11, the bearing inner ring 13 can rotate relative to the bearing outer ring 12, and the bearing inner ring 13 can support the outer periphery of the screw rod 111, so when the bearing inner ring 13 rotates, the bearing inner ring 13 can drive the screw rod 111 to rotate synchronously, thereby playing the role of power steering.

In the radial direction of the screw rod 111, the cross-sectional area of the mounting groove 112 is larger than the cross-sectional area of the bearing outer ring 12. The above structure can ensure that the bearing outer ring 12 can move in the mounting groove 112. During the adjustment process, the position of the bearing outer ring 12 in the mounting groove 112 is adjusted to change the axis of the bearing inner ring 13, so that the distance between the axis of the bearing inner ring 13 and the axis of the driving member 14 is increased, thereby increasing the tension of the transmission member 15 so that the transmission member 15 can effectively transmit power.

In short, the steering gear assembly 10 of the embodiment of the present application has a housing 11, a mounting groove 112 is formed in the housing 11, the bearing outer ring 12 is arranged in the mounting groove 112 and is sleeved on the outer periphery of the bearing inner ring 13, the bearing inner ring 13 is sleeved on the outer periphery of the screw rod 111, and in the radial direction of the screw rod 111, the cross-sectional area of the mounting groove 112 is larger than the cross-sectional area of the bearing outer ring 12. Therefore, when the staff moves the position of the bearing outer ring 12 in the mounting groove 112, the axial position of the bearing inner ring 13 can be changed, thereby changing the tensioning force of the transmission member 15, so that the transmission member 15 can effectively transmit power, thereby reducing the cost of the steering gear.

As shown in FIG. 4 , in some embodiments of the present application, the mounting groove 112 includes a first groove body 1121 and a second groove body 1122. The first groove body 1121 can be located on the end surface of the housing 11 and is recessed toward the inside of the housing 11. The diameter of the first groove body 1121 is greater than or equal to the diameter of the bearing outer ring 12, ensuring that the bearing outer ring 12 can be disposed in the first groove body 1121. The second groove body 1122 can be located at least partially around the first groove body 1121, and at least part of the bearing outer ring 12 can be selectively disposed toward the second groove body 11 22 is moved to adjust the axis of the bearing inner ring 13. It can be understood that when the bearing outer ring 12 is installed in the first groove body 1121, a second groove body 1122 is formed between the bearing outer ring 12 and the inner wall of the mounting groove 112. The staff can move the bearing outer ring 12 to move part of the bearing outer ring 12 into the second groove body 1122, thereby changing the position of the bearing outer ring 12 in the mounting groove 112, and then adjusting the axis position of the bearing inner ring 13, increasing the tension of the transmission member 15, and enabling the transmission member 15 to effectively transmit power.

As shown in Figure 4, in some embodiments of the present application, the second groove body 1122 can be located on at least one side of the first groove body 1121 in the radial direction, and the second groove body 1122 can be located on the same side of the first groove body 1121 in the radial direction of the screw or on both sides away from each other, so that the bearing outer ring 12 has sufficient space to move, so as to effectively adjust the tensioning force of the transmission member 15. In a specific embodiment, the second groove body 1122 can be located on both sides of the first groove body 1121 in the radial direction of the screw away from each other, and the mounting groove 112 can be constructed as a waist-shaped groove.

As shown in FIG. 4 , in some embodiments of the present application, a first mounting hole 113 may be formed in the first slot 1121, and a second mounting hole 121 is formed on the bearing outer ring 12 and is arranged to penetrate along the axial direction. The second mounting hole 121 is arranged corresponding to the first mounting hole 113. After the staff moves the bearing outer ring 12 and tightens the transmission member 15, the bolt 101 passes through the second mounting hole 121 and the first mounting hole 113 in sequence, thereby fixing the bearing outer ring 12 in the mounting slot 112. Further, the first mounting hole 113 may be configured as a plurality, and the plurality of first mounting holes 113 may be arranged at intervals in the circumferential direction of the first slot 1121. The second mounting hole 121 may also be configured as a plurality, and the plurality of second mounting holes 121 may be arranged one-to-one corresponding to the plurality of first mounting holes 113. The plurality of first mounting holes 113 and the plurality of second mounting holes 121 may further improve the stability of the fit between the bearing outer ring 12 and the housing 11. In a specific embodiment, the second mounting hole 121 can be configured as a waist-shaped hole, which can limit the movement range of the bearing outer ring 12 and facilitate the assembly of the bolt 101 into the second mounting hole 121 after self-alignment.

As shown in FIG. 2 and FIG. 3 , in some embodiments of the present application, the steering gear assembly 10 further includes a driving member 14, which can be arranged on the housing 11, and a first threaded hole can be formed on the driving member 14, and a second threaded hole corresponding to the first threaded hole can be formed on the housing 11, and the driving member 14 is fixed to the housing 11 by passing the bolt 101 through the first threaded hole and the second threaded hole in sequence. In a specific embodiment, the driving member 14 can be configured as a motor. The driving member 14 has a driving shaft 141 extending in the axial direction, and the driving shaft 141 can be linked with the screw rod 111, and the power generated by the rotation of the driving shaft 141 can be transmitted to the bearing inner ring 13, and the bearing inner ring 13 drives the screw rod 111 to move along the axial direction by rotating, thereby realizing the function of power steering.

As shown in Figures 1 to 3, in some embodiments of the present application, the steering gear assembly 10 also includes a transmission member 15, which can be arranged on the outer peripheral wall of the drive shaft 141 and the outer peripheral wall of the bearing inner ring 13, and the transmission member 15 can link the drive shaft 141 with the bearing inner ring 13. When the drive shaft 141 rotates under the influence of the drive member 14, the power generated by the drive shaft 141 can be transmitted to the transmission member 15, and the transmission member 15 can transmit the power to the bearing inner ring 13, and the bearing inner ring 13 drives the screw rod 111 to move along the axial direction by rotating, thereby realizing the function of power steering. In a specific embodiment, the transmission member 15 can be constructed as a synchronous belt. When the staff adjusts the position of the bearing outer ring 12 in the mounting groove 112, the axial position of the bearing inner ring 13 can be changed, thereby increasing the distance between the axis of the drive shaft 141 and the axis of the bearing inner ring 13, thereby adjusting the tension of the transmission member 15, so that the transmission member 15 can effectively transmit power.

As shown in Figure 5, in some embodiments of the present application, the bearing inner ring 13 is arranged in the accommodating cavity, and the bearing inner ring 13 is supported on the surface of the screw 111, and the bearing outer ring 12 is arranged on the outer periphery of the bearing inner ring 13, and the bearing outer ring 12 can limit the bearing inner ring 13, wherein an extension portion 131 extending in a direction away from the bearing outer ring 12 is formed on the bearing inner ring 13, and the extension portion 131 can provide a certain space for the installation of the transmission member 15. Specifically, the transmission member 15 can be sleeved on the surface of the extension portion 131, and the transmission member 15 can transmit power to the extension portion 131, and the extension portion 131 can drive the screw 111 to move along the axial direction by rotating.

As shown in Figures 1 to 3, in some embodiments of the present application, the steering gear assembly 10 also includes a first pulley 16 and a second pulley 17. The first pulley 16 can be sleeved on the outer peripheral wall of the drive shaft 141 and is dynamically connected to the drive shaft 141. The second pulley 17 can be sleeved on the outer peripheral wall of the extension portion 131 and is dynamically connected to the extension portion 131. One end of the transmission member 15 can be sleeved on the surface of the first pulley 16, and the other end of the transmission member 15 can be sleeved on the surface of the second pulley 17, thereby realizing the transmission of power between the first pulley 16 and the second pulley 17. Specifically, when the driving member 14 receives a signal, the driving member 14 can rotate by driving the driving shaft 141, and the driving shaft 141 drives the first pulley 16 to rotate. The first pulley 16 drives the transmission member 15 to move, and the transmission member 15 drives the second pulley 17 to rotate. The second pulley 17 drives the extension portion 131 to rotate. The extension portion 131 rotates to drive the screw rod 111 to move along the axial direction, thereby realizing the function of power steering.

As shown in Figure 3, in some embodiments of the present application, the axis of the drive shaft 141 is arranged parallel to the axis of the bearing inner ring 13, so as to ensure that when the position of the bearing inner ring 13 is adjusted, the distance between the axis of the bearing inner ring 13 and the axis of the drive shaft 141 can be increased. The transmission member 15 is respectively mounted on the bearing inner ring 13 and the drive shaft 141. When the distance between the axis of the bearing inner ring 13 and the axis of the drive shaft 141 increases, the tensioning force of the transmission member 15 also increases, so that the transmission member 15 can effectively transmit power.

As shown in Figure 5, in some embodiments of the present application, an adjustment hole 122 is also formed on the bearing outer ring 12. The adjustment hole 122 can be constructed in multiple numbers, and the multiple adjustment holes 122 can be spaced apart in the circumferential direction of the bearing outer ring 12. The adjustment hole 122 can facilitate the clamping of the equipment when the bearing outer ring 12 is assembled with the housing 11.

The following is a brief description of a vehicle according to an embodiment of the present application.

According to the embodiment of the present application, the vehicle is provided with the steering gear assembly 10 of the above embodiment. Since the vehicle of the embodiment of the present application is provided with the steering gear assembly 10 of the above embodiment, a mounting groove 112 is formed in the housing 11 of the steering gear assembly 10 of the vehicle. The bearing outer ring 12 is arranged in the mounting groove 112 and is sleeved on the outer periphery of the bearing inner ring 13 in the radial direction of the screw rod 111. The cross-sectional area of the mounting groove 112 is larger than the cross-sectional area of the bearing outer ring 12. Therefore, when the staff moves the position of the bearing outer ring 12 in the mounting groove 112, the axial position of the bearing inner ring 13 can be changed, thereby changing the tensioning force of the transmission member 15, so that the transmission member 15 can effectively transmit power, thereby reducing the cost of the steering gear.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In the description of this application, "first feature" or "second feature" may include one or more of the features.

In the description of the present application, “plurality” means two or more.

In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does 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.

Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims (10)

1. A steering gear assembly, characterized by comprising: A housing (11), wherein a screw rod (111) is movably provided on the housing (11), and a mounting groove (112) is formed in the housing (11); A bearing outer ring (12), the bearing outer ring (12) being arranged in the mounting groove (112) and sleeved on the outer circumference of the screw rod (111); A bearing inner ring (13), the bearing inner ring (13) is rotatably arranged on the bearing outer ring (12) and supported on the outer periphery of the screw rod (111); wherein, in the radial direction of the screw rod (111), the cross-sectional area of the mounting groove (112) is larger than the cross-sectional area of the bearing outer ring (12), and the bearing outer ring (12) can be selectively moved in the mounting groove (112) to adjust the axis of the bearing inner ring (13). 2. The steering gear assembly according to claim 1, characterized in that the mounting groove (112) comprises: a first groove body (1121), the first groove body (1121) being located on an end surface of the housing (11) and being recessed toward the interior of the housing (11), the diameter of the first groove body (1121) being greater than or equal to the diameter of the bearing outer ring (12), and the bearing outer ring (12) being arranged in the first groove body (1121); A second groove body (1122), wherein the second groove body (1122) is located on at least a portion of the outer periphery of the first groove body (1121), and at least a portion of the bearing outer ring (12) can be selectively moved toward the second groove body (1122) to adjust the axis of the bearing inner ring (13). 3. The steering gear assembly according to claim 2, characterized in that the second groove body (1122) is located on at least one side of the first groove body (1121) in the radial direction. 4. The steering gear assembly according to claim 2 is characterized in that a first mounting hole (113) is formed in the first groove body (1121), and a second mounting hole (121) is formed on the bearing outer ring (12) and passes through the first mounting hole (113) in the axial direction. 5. The steering gear assembly according to claim 4 is characterized in that the first mounting holes (113) are configured as a plurality of holes spaced apart in the circumferential direction of the first groove body (1121), and the second mounting holes (121) are configured as a plurality of holes arranged in a one-to-one correspondence with the plurality of first mounting holes (113). 6. The steering gear assembly according to claim 1, further comprising: A driving member (14) is arranged on the housing (11) and is formed with a driving shaft (141) extending in the axial direction of the screw rod, and the driving shaft (141) is linked with the screw rod (111). 7. The steering gear assembly according to claim 6, further comprising: A transmission member (15) is provided on the outer peripheral wall of the drive shaft (141) and the bearing inner ring (13) and is suitable for linking the drive shaft (141) and the bearing inner ring (13). 8. The steering gear assembly according to claim 7 is characterized in that an extension portion (131) extending in a direction away from the bearing outer ring (12) is formed on the bearing inner ring (13), and the transmission member (15) is sleeved on the surface of the extension portion (131). 9. The steering gear assembly according to claim 8, further comprising: A first pulley (16), wherein the first pulley (16) is sleeved on the outer peripheral wall of the driving shaft (141), and one end of the transmission member (15) is sleeved on the surface of the first pulley (16); A second pulley (17), wherein the second pulley (17) is sleeved on the outer peripheral wall of the extension portion (131), and the other end of the transmission member (15) is sleeved on the surface of the second pulley (17). 10. A vehicle, characterized by comprising a steering gear assembly according to any one of claims 1 to 9.