Bearing assembly, speed reducer and vehicle

Abstract

The utility model relates to a bearing assembly, a speed reducer and a vehicle. The bearing assembly comprises a bearing, a bearing seat and a locking piece. The bearing is arranged on the bearing seat, and an anti-rotation part is arranged on a bearing outer ring of the bearing; the locking piece is movably arranged on the bearing seat and has a locking state and an unlocking state; in the locking state, the locking piece is matched with the anti-rotation part so as to limit the bearing outer ring to rotate relative to the bearing seat; and in the unlocking state, the locking piece is separated from the anti-rotation part. When the locking piece moves to the locking state, the locking piece is matched with the anti-rotation part, so that the bearing outer ring can be limited to rotate relative to the bearing seat, mutual friction between the bearing outer ring and the bearing seat can be effectively reduced, abrasion caused by friction is reduced, in addition, the NVH performance can be improved under the condition that the abrasion is reduced, and the service life of the bearing is prolonged. And the service lives of the bearing and the bearing seat are prolonged.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicle parts, in particular to a bearing assembly, a speed reducer and a vehicle. BACKGROUND

[0002] In related technologies, in order to improve transmission efficiency, deep groove ball bearings are mostly used in electric drive reduction boxes, and the bearing outer ring is generally assembled in the bearing chamber of the shell in a clearance fit for easy installation. However, the bearing of such structure is prone to run-out of the outer ring during operation, which causes wear of the bearing chamber of the shell, reduces the NVH (Noise, Vibration, Harshness) performance and shortens the service life of the bearing. CONTENT OF THE UTILITY MODEL

[0003] To overcome the problems in related technologies, the present disclosure provides a bearing assembly, a speed reducer and a vehicle.

[0004] According to a first aspect of the embodiments of the present disclosure, a bearing assembly is provided, which comprises a bearing, a bearing seat and a locking piece;

[0005] The bearing is arranged in the bearing seat, and the bearing outer ring of the bearing is provided with an anti-rotation part;

[0006] The locking piece is movably arranged in the bearing seat and comprises a locked state and an unlocked state;

[0007] In the locked state, the locking piece cooperates with the anti-rotation part to be able to limit the rotation of the bearing outer ring relative to the bearing seat;

[0008] In the unlocked state, the locking piece is disengaged from the anti-rotation part.

[0009] Wherein, by arranging the anti-rotation part on the bearing outer ring of the bearing, and arranging the locking piece on the bearing seat, and movably arranging the locking piece on the bearing seat, when the locking piece moves to the locked state, the locking piece cooperates with the anti-rotation part, thereby being able to limit the rotation of the bearing outer ring relative to the bearing seat, so as to effectively reduce the mutual friction between the bearing outer ring and the bearing seat, thereby reducing the wear caused by friction, and in the case of reduced wear, the NVH performance can also be improved, and the service life of the bearing and the bearing seat can be prolonged.

[0010] In some embodiments, the anti-rotation part comprises an anti-rotation groove, which is recessed in the bearing outer ring in a first direction;

[0011] The locking piece is movably arranged in the bearing seat along the first direction, in the locked state, the locking piece is inserted into the anti-rotation groove; in the unlocked state, the locking piece is disengaged from the anti-rotation groove.

[0012] When the locking member is in the locked state, the locking member can be inserted into the anti-rotation groove, thereby stopping the bearing outer ring to limit the rotation of the bearing outer ring; in the unlocked state, the locking member can abut against the bearing outer ring, that is, the locking member is not inserted into the anti-rotation groove, and the anti-rotation groove and the locking member can be relatively moved by rotating the bearing outer ring. In the relative state, the locking member can be switched from the unlocked state to the locked state, thereby realizing the circumferential locking of the bearing outer ring.

[0013] In some embodiments, the locking member comprises a locking sleeve, an elastic element, and a locking pin;

[0014] The locking sleeve is arranged in the bearing seat;

[0015] The locking pin is movably arranged in the locking sleeve along the first direction, and in the locked state, the locking pin is inserted into the anti-rotation groove; in the unlocked state, the locking pin is separated from the anti-rotation groove;

[0016] The elastic element is arranged in the locking sleeve and can be elastically deformed along the first direction to move the locking pin from the unlocked state to the locked state.

[0017] When the bearing is installed in the bearing seat, and the anti-rotation groove and the locking member are not relatively moved in the first direction, the locking pin abuts against the bearing outer ring and compresses the elastic element under the action of the bearing outer ring, that is, the locking pin moves to the unlocked state. At this time, by rotating the bearing outer ring, the bearing outer ring always applies a force to the locking pin to maintain it in the unlocked state during the rotation until the anti-rotation groove and the locking pin are relatively moved in the first direction. The bearing outer ring releases the force on the locking pin, and the locking pin moves from the unlocked state to the locked state under the action of the elastic element, that is, the locking pin is inserted into the anti-rotation groove to limit the circumferential rotation of the bearing outer ring. This can effectively reduce the mutual friction between the bearing outer ring and the bearing seat, thereby reducing the wear caused by friction. In addition, in the case of reduced wear, the NVH performance can be improved, and the service life of the bearing and the bearing seat can be prolonged.

[0018] In some embodiments, the locking pin comprises a pin rod and an abutting plate connected to each other, and the pin rod is used to be inserted into the anti-rotation groove;

[0019] The locking sleeve comprises a sleeve body and a stop inner flange, and the inside of the sleeve body comprises a first sleeve segment and a second sleeve segment which are in communication with each other in the first direction;

[0020] The stop inner flange is arranged in the first sleeve segment, and the pin rod movably penetrates the stop inner flange along the first direction.

[0021] The abutment plate is arranged in the second sleeve segment and can abut against the stop inner flange, and the elastic element is arranged in the second sleeve segment and can abut against the abutment plate.

[0022] Wherein, through the cooperation between the stop inner flange and the abutment plate, the locking pin can be effectively limited from disengaging from the locking sleeve; secondly, through the arrangement of the abutment plate, the elastic element can be effectively abutted, and the elastic force of the elastic element on the locking pin is realized.

[0023] In some embodiments, a mounting hole is formed on the bearing seat, and the locking sleeve is arranged in the mounting hole.

[0024] Wherein, by arranging the locking sleeve in the mounting hole, the locking sleeve can be conveniently installed without occupying too much space of the bearing seat.

[0025] In some embodiments, the bearing seat is formed with a bearing groove, and the bearing is arranged in the bearing groove.

[0026] The groove bottom wall of the bearing groove is arranged with a bearing flange protruding in the first direction along the circumference thereof, and the bearing flange comprises a flange end face away from the groove bottom wall.

[0027] The bearing outer ring comprises an outer ring side face, and the outer ring side face is used to abut against the flange end face.

[0028] The mounting hole is configured as a blind hole, the blind hole is recessed in the first direction and arranged in the flange end face, and the anti-rotation groove is recessed in the first direction and arranged in the outer ring side face.

[0029] Wherein, the outer ring side face abuts against the flange end face, and through this direct contact mode, the position limitation of the bearing relative to the bearing seat is further enhanced; secondly, by arranging the mounting hole in the bearing flange, the space of the bearing flange can be effectively utilized, and the space utilization rate is improved.

[0030] In some embodiments, the bearing outer ring comprises a first outer ring side face and a second outer ring side face arranged opposite to each other along the axial direction thereof.

[0031] The first outer ring side face is recessed in the first direction and arranged with the anti-rotation groove, and the second outer ring side face is recessed in the first direction and arranged with the anti-rotation groove.

[0032] Wherein, the first direction is arranged in the same direction as the axial direction of the bearing.

[0033] The first outer ring side surface and the second outer ring side surface of the bearing outer ring are both formed with an anti-rotation groove. In this way, when the bearing is installed, the front and back sides do not need to be considered, and the locking piece can be matched on either side, improving the convenience of assembly.

[0034] In some embodiments, the anti-rotation parts are provided in a plurality, and the locking pieces are provided in a plurality; wherein the anti-rotation parts and the locking pieces are provided one by one in a one-to-one correspondence.

[0035] The plurality of anti-rotation parts and the plurality of locking pieces are provided in a one-to-one correspondence, which can effectively improve the stability of the locking.

[0036] According to a second aspect of the embodiments of the present disclosure, a reducer is also provided, which comprises the bearing assembly.

[0037] According to a third aspect of the embodiments of the present disclosure, a vehicle is also provided, which comprises the bearing assembly; or the vehicle comprises the reducer.

[0038] The technical scheme provided by the embodiments of the present disclosure can have the following beneficial effects: by providing an anti-rotation part on the bearing outer ring of the bearing and a locking piece on the bearing seat, and movably arranging the locking piece on the bearing seat, when the locking piece is moved to a locked state, the locking piece cooperates with the anti-rotation part, thereby limiting the rotation of the bearing outer ring relative to the bearing seat, effectively reducing the mutual friction between the bearing outer ring and the bearing seat, thereby reducing the wear caused by friction, and improving the NVH performance and prolonging the service life of the bearing and the bearing seat.

[0039] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0040] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0041] Figure 1 is a structural schematic diagram of a bearing assembly of an embodiment of the present disclosure.

[0042] Figure 2 is a structural schematic diagram of a bearing seat of a bearing assembly of an embodiment of the present disclosure.

[0043] Figure 3 is a structural schematic diagram of a bearing and a locking piece of a bearing assembly of an embodiment of the present disclosure.

[0044] Figure 4 is a schematic view of a locking member of a bearing assembly according to an embodiment of the present disclosure.

[0045] Explanation of Reference Signs

[0046] 1, bearing; 11, bearing outer ring; 111, rotation prevention portion; 112, outer ring side surface; 1121, first outer ring side surface; 1122, second outer ring side surface;

[0047] 2, bearing housing; 21, mounting hole; 22, bearing groove; 23, bearing flange; 231, flange end surface;

[0048] 3, locking member; 31, locking sleeve; 311, sleeve body; 3111, first sleeve section; 3112, second sleeve section; 312, stopper inner flange; 32, elastic element; 33, locking pin; 331, pin stem; 332, abutting plate;

[0049] A, first direction. DETAILED DESCRIPTION

[0050] Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. In the following description, the same drawings refer to the same elements or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with some aspects of the present disclosure, as detailed in the appended claims.

[0051] In the present disclosure, unless otherwise specified, the first direction used as an orientation word can be an arbitrary direction, for example, the first direction can be in the same direction as the axial direction of the bearing, and can be specifically referred to as shown in Figure 3 The orientation words such as "inner" and "outer" refer to the inner and outer of the specific structure profile; the terms such as "first", "second", etc. are only used to distinguish one element from another element, and do not have sequentiality and importance.

[0052] In the description of the present disclosure, it should also be noted that, unless otherwise specified and limited, the terms "set", "connected" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0053] Reference Figures 1 to 4As shown, the bearing assembly provided by the present disclosure comprises a bearing 1, a bearing seat 2, and a locking piece 3; the bearing 1 is arranged on the bearing seat 2, and the bearing outer ring 11 of the bearing 1 is provided with an anti-rotation part 111; the locking piece 3 is movably arranged on the bearing seat 2 and comprises a locked state and an unlocked state; in the locked state, the locking piece 3 cooperates with the anti-rotation part 111 to be able to limit the rotation of the bearing outer ring 11 relative to the bearing seat 2; in the unlocked state, the locking piece 3 is separated from the anti-rotation part 111.

[0054] In the above technical solution, by arranging the anti-rotation part 111 on the bearing outer ring 11 of the bearing 1, and arranging the locking piece 3 on the bearing seat 2, and movably arranging the locking piece 3 on the bearing seat 2; when the locking piece 3 moves to the locked state, the locking piece 3 cooperates with the anti-rotation part 111, thereby being able to limit the rotation of the bearing outer ring 11 relative to the bearing seat 2, thereby effectively reducing the mutual friction between the bearing outer ring 11 and the bearing seat 2, and further reducing the wear caused by friction, and in the case of reducing wear, the NVH performance can be improved, and the service life of the bearing 1 and the bearing seat 2 can be prolonged.

[0055] Optionally, the above-mentioned locking piece 3 can be arranged on the bearing seat 2 in any appropriate movement manner, for example, the locking piece 3 can be rotatably arranged on the bearing seat 2, or the locking piece 3 can be movably arranged on the bearing seat 2, and the present disclosure does not limit this.

[0056] In addition, the bearing seat 2 can be constructed in any appropriate shape and structure, and the present disclosure does not limit this.

[0057] In an embodiment, referring to Figure 3 As shown, the anti-rotation part 111 comprises an anti-rotation groove recessed in the bearing outer ring 11 in the first direction A; the locking piece 3 is movably arranged on the bearing seat 2 along the first direction A, and in the locked state, the locking piece 3 is inserted into the anti-rotation groove; in the unlocked state, the locking piece 3 is separated from the anti-rotation groove.

[0058] In this embodiment, when the locking piece 3 is in the locked state, the locking piece 3 can be inserted into the anti-rotation groove, thereby being able to stop the bearing outer ring 11 to limit the rotation of the bearing outer ring 11; in the unlocked state, the locking piece 3 can abut against the bearing outer ring 11, that is, the locking piece 3 is not inserted into the anti-rotation groove, and the anti-rotation groove can be relative to the locking piece 3 by rotating the bearing outer ring 11, in the relative case, the locking piece 3 can be switched from the unlocked state to the locked state, thereby realizing the locking of the bearing outer ring 11 in the circumferential direction. In addition, the above-mentioned anti-rotation groove can be constructed as a U-shaped groove, but the present disclosure does not limit the specific shape of the anti-rotation groove, and the present disclosure also does not limit the specific structure of the anti-rotation part 111, which can be constructed in any appropriate structure.

[0059] Optionally, referring to Figure 3 and Figure 4 As shown, the locking member 3 comprises a locking sleeve 31, an elastic element 32 and a locking pin 33; the locking sleeve 31 is arranged in the bearing seat 2; the locking pin 33 is movably arranged in the locking sleeve 31 along the first direction A; in the locked state, the locking pin 33 is inserted into the anti-rotation groove; in the unlocked state, the locking pin 33 is separated from the anti-rotation groove; the elastic element 32 is arranged in the locking sleeve 31 and can be elastically deformed along the first direction A to move the locking pin 33 from the unlocked state to the locked state.

[0060] In this embodiment, the locking sleeve 31 can be fixed to the bearing seat 2 in any appropriate manner, the locking pin 33 is movably arranged in the locking sleeve 31 along the first direction A, when the bearing 1 is installed in the bearing seat 2, and the anti-rotation groove and the locking member 3 are not relative in the first direction A, the locking pin 33 abuts against the bearing outer ring 11 and is compressed by the bearing outer ring 11 to compress the elastic element 32, that is, the locking pin 33 moves to the unlocked state, at this time, by rotating the bearing outer ring 11, the bearing outer ring 11 always applies force to the locking pin 33 to maintain it in the unlocked state during rotation, until the anti-rotation groove and the locking pin 33 are relative in the first direction A, the bearing outer ring 11 releases the force on the locking pin 33, and the locking pin 33 moves from the unlocked state to the locked state under the action of the elastic element 32, that is, the locking pin 33 is inserted into the anti-rotation groove to limit the circumferential rotation of the bearing outer ring 11; which can effectively reduce the mutual friction between the bearing outer ring 11 and the bearing seat 2, thereby reducing the wear caused by friction, and in the case of reduced wear, it can also improve the NVH performance and prolong the service life of the bearing 1 and the bearing seat 2.

[0061] Optionally, referring to Figure 4 As shown, the locking pin 33 comprises a pin shaft 331 and an abutting plate 332 connected to each other, the pin shaft 331 is used to be inserted into the anti-rotation groove; the locking sleeve 31 comprises a sleeve body 311 and a stop inner flange 312, the inside of the sleeve body 311 comprises a first sleeve segment 3111 and a second sleeve segment 3112 which are in communication with each other in the first direction; the stop inner flange 312 is arranged in the first sleeve segment 3111, the pin shaft 331 movably penetrates the stop inner flange 312 along the first direction A; the abutting plate 332 is arranged in the second sleeve segment 3112 and can abut against the stop inner flange 312, and the elastic element 32 is arranged in the second sleeve segment 3112 and can abut against the abutting plate 332.

[0062] In this embodiment, the engagement between the inner flange 312 and the abutment plate 332 effectively prevents the locking pin 33 from disengaging from the locking sleeve 31. Secondly, by providing the abutment plate 332, it effectively abuts against the elastic element 32, thereby realizing the elastic force exerted by the elastic element 32 on the locking pin 33. Furthermore, the elastic element 32 can be constructed as any suitable elastic structure; for example, it can be a spring, an elastic sheet, etc., and this disclosure does not limit its application.

[0063] Optionally, the bearing housing 2 may have a mounting hole 21, and the locking sleeve 31 may be disposed within the mounting hole 21. This facilitates the installation of the locking sleeve 31 without occupying excessive space in the bearing housing 2. During installation, the end of the locking sleeve 31 may be flush with the end of the mounting hole 21 to prevent wear on the outer ring 11 of the bearing. Furthermore, the locking sleeve 31 may be fitted into the mounting hole 21 with an interference fit to improve installation stability.

[0064] In another embodiment, refer to Figure 2 As shown, the bearing housing 2 may have a bearing groove 22, and the bearing 1 is disposed in the bearing groove 22; the bottom wall of the bearing groove 22 is provided with a bearing flange 23 protruding in the first direction A along its circumference, and the bearing flange 23 includes a flange end face 231 away from the bottom wall of the groove; the bearing outer ring 11 includes an outer ring side surface 112, which is used to abut against the flange end face 231; the mounting hole 21 is constructed as a blind hole, and the blind hole is recessed in the flange end face 231 along the first direction A; the anti-rotation groove is recessed in the outer ring side surface 112 along the first direction A.

[0065] In this embodiment, the outer ring side surface 112 abuts against the flange end face 231. This direct contact further enhances the positional limitation of the bearing 1 relative to the bearing housing 2. Secondly, by providing the mounting hole 21 in the bearing flange 23, the space of the bearing flange 23 can be effectively utilized, improving the space utilization rate. In addition, this disclosure does not limit the specific form of the mounting hole 21. In other embodiments, the mounting hole 21 can also be constructed as a through hole, and this disclosure does not limit it.

[0066] Optionally, refer to Figure 3 As shown, the bearing outer ring 11 includes a first outer ring side surface 1121 and a second outer ring side surface 1122 arranged opposite to each other along its axial direction; the first outer ring side surface 1121 is recessed along a first direction A and is provided with an anti-rotation groove, and the second outer ring side surface 1122 is recessed along the first direction A and is provided with an anti-rotation groove; wherein, the first direction A is arranged in the same direction as the axial direction of the bearing 1.

[0067] That is, in this embodiment, the first outer ring side surface 1121 and the second outer ring side surface 1122 of the bearing outer ring 11 are both formed with the anti-rotation groove, and through such a setting mode, when the bearing 1 is installed, there is no need to consider the front and back problems, and no matter which side, the cooperation with the locking piece 3 can be achieved, and the convenience of assembly is improved.

[0068] Optionally, the anti-rotation part 111 is provided in plurality, and the locking piece 3 is provided in plurality; wherein the anti-rotation part 111 and the locking piece 3 are one-to-one correspondingly arranged, thereby realizing the stability of the locking.

[0069] The present disclosure also provides a reducer, comprising the bearing assembly described above; wherein the bearing seat 2 is configured as a reducer housing of the reducer.

[0070] The present disclosure additionally provides a vehicle, comprising the bearing assembly described above; or the vehicle comprises the reducer described above.

[0071] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the present disclosure. This application is intended to cover any variations, uses or adaptations of the present disclosure following the general principles thereof and including such departures from the present disclosure that come within known

[0072] It should be understood that the present disclosure is not limited to the precise structures described above and illustrated in the drawings and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A bearing assembly, characterized in that, The bearing assembly includes a bearing, a bearing housing, and a locking element; The bearing is disposed in the bearing housing, and the outer ring of the bearing is provided with an anti-rotation part; The locking member is movably disposed on the bearing seat and includes a locked state and an unlocked state; In the locked state, the locking member cooperates with the anti-rotation part to restrict the rotation of the outer ring of the bearing relative to the bearing housing; In the unlocked state, the locking member disengages from the anti-rotation part.

2. The bearing assembly according to claim 1, characterized in that, The anti-rotation part includes an anti-rotation groove, which is recessed in the outer ring of the bearing in a first direction; The locking member is movably disposed on the bearing seat along the first direction. In the locked state, the locking member is inserted into the anti-rotation groove; in the unlocked state, the locking member is disengaged from the anti-rotation groove.

3. The bearing assembly according to claim 2, characterized in that, The locking component includes a locking sleeve, an elastic element, and a locking pin; The locking sleeve is disposed on the bearing housing; The locking pin is movably disposed within the locking sleeve along the first direction. In the locked state, the locking pin is inserted into the anti-rotation groove; in the unlocked state, the locking pin disengages from the anti-rotation groove. The elastic element is disposed inside the locking sleeve and can undergo elastic deformation along the first direction, so that the locking pin moves from the unlocked state to the locked state.

4. The bearing assembly according to claim 3, characterized in that, The locking pin includes a pin rod and an abutment plate connected to each other, and the pin rod is used to insert into the anti-rotation groove; The locking sleeve includes a sleeve body and a stop inner flange, and the interior of the sleeve body includes a first sleeve section and a second sleeve section that are interconnected in the first direction. The inner flange of the stop is disposed within the first sleeve section, and the pin rod is movably inserted through the inner flange of the stop along the first direction; The abutment plate is disposed within the second sleeve section and can abut against the inner flange of the stop; the elastic element is disposed within the second sleeve section and can abut against the abutment plate.

5. The bearing assembly according to claim 3, characterized in that, The bearing housing has a mounting hole, and the locking sleeve is disposed in the mounting hole.

6. The bearing assembly according to claim 5, characterized in that, The bearing housing has a bearing groove, and the bearing is disposed in the bearing groove; The bearing groove has a bearing flange protruding in the first direction arranged circumferentially on the bottom wall of the groove, and the bearing flange includes a flange end face away from the bottom wall of the groove. The bearing outer ring includes an outer ring side surface, which is used to abut against the flange end face; The mounting hole is a blind hole, which is recessed on the flange end face along the first direction, and the anti-rotation groove is recessed on the outer ring side along the first direction.

7. The bearing assembly according to claim 6, characterized in that, The bearing outer ring includes a first outer ring side surface and a second outer ring side surface disposed opposite to each other along its axial direction; The anti-rotation groove is recessed on the side of the first outer ring along the first direction, and the anti-rotation groove is also recessed on the side of the second outer ring along the first direction. The first direction is arranged in the same direction as the axial direction of the bearing.

8. The bearing assembly according to claim 1, characterized in that, The anti-rotation part is provided in multiple ways, and the locking member is provided in multiple ways; wherein, the anti-rotation part and the locking member are provided in a one-to-one correspondence.

9. A speed reducer, characterized in that, The reducer includes a bearing assembly according to any one of claims 1-8; wherein the bearing housing is configured as the reducer housing of the reducer.

10. A vehicle, characterized in that, The vehicle includes the bearing assembly of any one of claims 1-8; or, the vehicle includes the reducer of claim 9.

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