CN114635916A

CN114635916A - Bearing fixing structure, bearing assembly and speed reducer

Info

Publication number: CN114635916A
Application number: CN202210324507.7A
Authority: CN
Inventors: 孙国军; 李彩霞; 吴罡
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-06-17

Abstract

The application discloses bearing fixed knot constructs, bearing assembly and speed reducer belongs to the auto steering technical field. This bearing fixing structure includes: an annular body and at least one resilient member; the at least one elastic piece is annularly arranged on the outer wall of the annular body. The bearing fixing structure can avoid abnormal sound generated by collision between the bearing fixing structure and the shell of the speed reducer when a vehicle turns on site or passes through an uneven road surface due to the existence of the micro gap, and ensures that vehicle drivers and passengers have good driving experience.

Description

Bearing fixing structure, bearing assembly and speed reducer

Technical Field

The application relates to the technical field of automobile steering, in particular to a bearing fixing structure, a bearing assembly and a speed reducer.

Background

The bearing is an important component of the speed reducer, and is used for supporting the worm wheel shaft and positioning the worm wheel, and the bearing is fixedly connected with the shell of the speed reducer through the bearing fixing structure.

In the related art, the bearing fixing structure is made of plastic, the shell of the speed reducer is made of metal, and the bearing fixing structure is in direct contact with the shell of the speed reducer.

However, a small gap may exist between the bearing fixing structure and the housing of the speed reducer, and the existence of the small gap is very likely to cause abnormal noise caused by collision between the bearing fixing structure and the housing of the speed reducer when the vehicle turns on site or passes through an uneven road surface, thereby affecting the driving experience of vehicle drivers and passengers.

Disclosure of Invention

In view of this, the application provides a bearing fixed knot constructs, bearing assembly and speed reducer, can avoid the abnormal sound, ensures that vehicle driver and crew has good driving experience.

Specifically, the method comprises the following technical scheme:

in a first aspect, an embodiment of the present application provides a bearing fixing structure, where the bearing fixing structure includes: an annular body and at least one resilient member;

the at least one elastic piece is annularly arranged on the outer wall of the annular body.

In some embodiments, the annular body has at least one securing slot on an outer wall thereof;

the at least one elastic piece is fixed in the at least one fixing groove in a one-to-one correspondence mode, and one part of the elastic piece extends out of the fixing groove.

In some embodiments, when the number of the fixing grooves is two or more, two adjacent fixing grooves are disposed in parallel on the outer wall of the ring body.

In some embodiments, the at least one resilient member is affixed to the outer wall of the annular body.

In some embodiments, the elastic member is an annular rubber ring or an annular rubber sheet.

In some embodiments, the annular body includes a first annular portion and a second annular portion that are integrally formed,

the circle centers of the first annular part and the second annular part are overlapped, the outer ring radius of the second annular part is larger than that of the first annular part, and the at least one elastic piece is arranged on the outer wall of the second annular part in a surrounding mode.

In some embodiments, the annular body further comprises at least one fixation portion,

the at least one fixing part is located on one side, far away from the first annular part, of the second annular part, and each fixing part is provided with a limiting hole.

In some embodiments, the first annular portion has a plurality of stiffeners on an outer wall thereof,

the plurality of reinforcing members are annularly arranged on the outer wall of the first annular portion at equal intervals, and one side of each reinforcing member is connected with the second annular portion.

In a second aspect, embodiments of the present application also provide a bearing assembly comprising a bearing securing structure as described in the above aspect and a first bearing,

the first bearing is in contact with an inner wall of the annular body.

In a third aspect, embodiments of the present application further provide a speed reducer, where the speed reducer includes a housing and the bearing assembly according to the second aspect;

the bearing assembly is located within the housing and the at least one resilient member is in contact with an inner wall of the housing.

The embodiment of the application provides a bearing fixed knot constructs, establish the elastic component through the outer wall at annular body, make bearing fixed knot construct no longer utilize annular body itself and speed reducer casing contact, but elastic component and speed reducer casing contact, because the elastic component can be compressed by elasticity, therefore the elastic component that sets up can be used for filling the small gap between bearing fixed knot constructs and the speed reducer casing, avoided leading to the vehicle to turn to or pass through the road surface of unevenness in situ owing to there is small gap, bump and produce the abnormal sound between the casing of bearing fixed knot structure and speed reducer, ensure that the vehicle driver and crew has good experience of riding.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a bearing fixing structure according to an exemplary embodiment of the present application;

fig. 2 is a schematic structural diagram of a bearing fixing structure according to an exemplary embodiment of the present application;

fig. 3 is a cross-sectional view of a bearing assembly provided in an exemplary embodiment of the present application;

fig. 4 is a cross-sectional view of a speed reducer according to an exemplary embodiment of the present application;

fig. 5 is a structural diagram of a first clamp spring according to an exemplary embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a worm wheel and a worm wheel shaft connection according to an exemplary embodiment of the present application.

The reference numerals in the figures are denoted respectively by:

1. an annular body;

11. fixing grooves; 12. a first annular portion; 121. a reinforcement; 13. a second annular portion; 14. a fixed part; 141. a limiting hole;

2. an elastic member;

3. a first bearing;

4. a housing;

42. a first clamp spring; 421. an annular body; 422. a first end; 423. a second end; 424. a first fixing hole; 425. a second fixing hole; 43. a second clamp spring; 41. a first sub-housing; 44. a second sub-housing;

5. a second bearing;

6. a worm gear shaft;

7. a worm gear.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference to orientation terms in the embodiments of the present application, such as "upper," "lower," "side," and the like, are generally based on the relative relationship of the orientations shown in fig. 1, and these orientation terms are used merely for clarity of description of the structures and the relationship between the structures, and are not used for describing absolute orientations. When the product is placed in different postures, the orientation may be changed, for example, "up" and "down" may be interchanged.

Unless defined otherwise, all technical terms used in the examples of the present application have the same meaning as commonly understood by one of ordinary skill in the art. Some technical terms appearing in the embodiments of the present application are explained below.

The "bearing" refers to a mechanical element which limits the relative movement between the moving parts within a required range and reduces the friction between the moving parts, and the main function of the bearing is to support a mechanical rotating body so as to reduce the friction coefficient of mechanical load of the equipment in the transmission process.

The interference fit generally means that an interference value exists between a shaft to be assembled and a hole on a part to be assembled, and elastic pressure is generated on the surface of the hole wall after the assembly, so that the shaft to be assembled and the part to be assembled are fastened and connected.

The reference to "transition fit" generally means that there is a clearance or interference between the shaft to be assembled and the hole in the part to be assembled, mainly for relatively stationary connections that are precisely located and require disassembly.

In order to make the technical solutions and advantages of the present application clearer, the following will describe the embodiments of the present application in further detail with reference to the accompanying drawings.

In the related art, the bearing fixing structure is made of plastic, the shell of the speed reducer is made of metal, and the bearing fixing structure is in direct contact with the shell of the speed reducer. Due to the arrangement, the requirements on the processing technology of the bearing fixing structure and the shell of the speed reducer are extremely high, and due to the processing technology problem, a small gap may exist between the bearing fixing structure and the shell of the speed reducer, and when a vehicle turns on site or passes through an uneven road surface, the bearing fixing structure and the shell of the speed reducer are collided to generate abnormal sound easily due to the existence of the small gap, so that the driving experience of vehicle drivers and passengers is influenced.

In order to solve the problems in the related art, an embodiment of the present application provides a bearing fixing structure, and a schematic structural diagram of the bearing fixing structure is shown in fig. 1.

Referring to fig. 1, the bearing fixing structure includes: an annular body 1 and two elastic elements 2.

It will be understood by those skilled in the art that the number of the elastic members 2 is at least one, and may be two or more.

Wherein, each elastic element 2 is arranged on the outer wall of the annular body 1 in a ring shape.

Therefore, the bearing fixing structure provided by the embodiment of the application, through set up elastic component 2 on the outer wall of annular body 1 in the ring, make bearing fixing structure no longer utilize annular body 1 itself and reducer casing contact, but elastic component 2 and reducer casing contact, because elastic component 2 can be by elastic compression, therefore the elastic component 2 that sets up can be used for filling the small gap between bearing fixing structure and the reducer casing, avoided because there is the small gap and lead to the vehicle to turn to or pass through uneven road surface in situ, the collision takes place and produces the abnormal sound between the casing of bearing fixing structure and reducer, ensure that vehicle driver and crew has good riding experience.

The bearing fixing structure provided by the embodiment of the present application is further described below:

elastic component 2 is the key part of the bearing fixed knot who provides of this application embodiment for with annular body 1 and speed reducer casing contact, fill the small gap between bearing fixed knot structure and the speed reducer casing through elastic deformation, avoid bumping and producing the abnormal sound between the casing of bearing fixed knot structure and speed reducer.

It will be appreciated that the elastic element 2 is itself also of annular configuration, so as to be arranged on the outer wall of the annular body 1, cooperating with the annular body 1 to fill the small gaps between the bearing fixing structure and the casing of the reduction gear.

In some embodiments, the shape of the cross-section of the elastic member 2 includes a square, rectangle, circle, trapezoid, pentagon, or the like.

For example, referring to fig. 1, the cross-sectional shape of the elastic member 2 may be circular.

By providing the cross-sectional shape of the elastic member 2 in a circular shape, stress concentration can be reduced while facilitating manufacturing.

In some embodiments, when the cross-section of the elastic member 2 has a circular shape, the circular diameter may have a value ranging from 3mm to 3.5 mm.

For example, the diameter of the circle may be 3.3 mm.

In some embodiments, the elastic member 2 may be an annular rubber ring or an annular rubber sheet.

Because rubber has certain elasticity for can realize the fastening connection through interference fit between elastic component 2 and the speed reducer casing 4, avoid having the micro gap between bearing fixed knot constructs and the speed reducer casing 4.

It is understood that rubber is a high elastic polymer material capable of undergoing reversible deformation, is rich in elasticity at room temperature, can undergo deformation under the action of external force, and can recover to the original shape after the external force is removed.

For the ring-shaped body 1, see fig. 1, for fixing the elastic member 2.

In some embodiments, referring to fig. 1, the annular body 1 comprises a first annular portion 12 and a second annular portion 13, which are integrally formed.

The centers of circles of the first annular portion 12 and the second annular portion 13 are coincident, and the outer ring radius of the second annular portion 13 is larger than that of the first annular portion 12. So set up for when the bearing fixed knot that this application embodiment provided constructs in being arranged in the speed reducer of car, make things convenient for the worm-gear axle to pass annular body 1, and keep the stability in the use.

The elastic member 2 is annularly provided on the outer wall of the second annular portion 13 to fix the elastic member 2 with the second annular portion 13.

In some embodiments, referring to fig. 1, the annular body 1 further comprises a fixing portion 14 to facilitate fixing of the sensor.

The fixing portions 14 are located on one side of the second annular portion 13 away from the first annular portion 12, and each fixing portion 14 has a limiting hole 141, so as to be matched with a limiting member on the sensor, and limit the sensor.

It is understood that, when the bearing fixing structure provided in the embodiment of the present application is used in a speed reducer of an automobile, the first annular portion 12 is used to connect with a worm wheel of the speed reducer; the second annular portion 13 is adapted to be fixedly connected to the sensor.

The sensor is provided with a limiting part, the limiting part is suitable for entering the limiting hole 141, and the limiting part is matched with the limiting hole 141, so that the limiting and fixed connection between the sensor and the annular body 1 can be realized.

In some embodiments, the retainer portion 14 is integrally formed with the second annular portion 13.

In some embodiments, referring to fig. 2, the number of the fixing portions 14 may be two.

In some embodiments, referring to fig. 1, the outer wall of the first annular portion 12 has a plurality of stiffeners 121 thereon.

Wherein a plurality of reinforcing members 121 are annularly provided at equal intervals on the outer wall of the first annular portion 12, and one side of each reinforcing member 121 is connected to the second annular portion 13.

By providing a plurality of reinforcing members 121 on the outer wall of the first annular portion 12, the strength of the connection between the first annular portion 12 and the second annular portion 13 can be increased.

In some embodiments, referring to fig. 1, the thickness of the reinforcement 121 decreases gradually in a direction away from the first annular portion 12.

In some embodiments, referring to fig. 1, the side of the stiffener 121 distal from the second annular portion 13 is arcuate.

In some embodiments, the reinforcement 121 may be a stiffener.

In some embodiments, the material of the annular body 1 may be nylon, polyethylene, polypropylene, general-purpose polystyrene, or the like.

For example, the material of the ring body 1 may be nylon.

Because nylon has better mechanical properties, heat resistance, and chemical stability, easily processing, the annular body 1 of making with nylon not only can satisfy the intensity demand of annular body 1, can also alleviate the quality of annular body 1, accords with the design theory of lightweight.

On the basis of the above structure, there are many different implementations for annularly disposing the elastic element 2 on the outer wall of the annular body 1, and several possible implementations are exemplified below:

in a possible realization, the annular body 1 has at least one fixing groove 11 on its outer wall.

Wherein, elastic component 2 is fixed in fixed slot 11 one-to-one, and a part of elastic component 2 stretches out fixed slot 11 for elastic component 2 can realize interference fit with the structure rather than contact. That is, the elastic member 2 is retained on the ring body 1 by the retaining groove 11.

So set up, be convenient for elastic component 2 to set up on the outer wall of annular body 1.

In some embodiments, the securing slots 11 are integrally formed with the ring body 1.

In some embodiments, the shape of the fixing groove 11 is the same as that of the elastic element 2, so that the elastic element 2 is conveniently matched to limit and fix the elastic element 2.

For example, referring to fig. 1, the cross-section of the fixing groove 11 may be rectangular, so as to fix the elastic member 2.

In some embodiments, referring to fig. 2, when the number of the fixing grooves 11 is two or more, adjacent two fixing grooves 11 are disposed in parallel on the outer wall of the ring body 1.

The plurality of fixing grooves 11 are arranged, so that the plurality of elastic pieces 2 can be conveniently accommodated, and the support between the bearing fixing structure and the speed reducer shell 4 is increased; through with two adjacent fixed slots 11 parallel arrangement on the outer wall of annular body 1 for support between bearing fixed knot structure and the speed reducer casing is more even, avoids the abnormal sound that takes place because of the collision between bearing fixed knot structure and the speed reducer casing better.

In some embodiments, referring to fig. 2, the number of the fixing grooves 11 may be two. Accordingly, the number of the elastic members 2 may be two.

In this implementation, the elastic member 2 may be an annular rubber ring, i.e., an O-ring.

In some embodiments, the elastic member 2 may be fixed in the corresponding fixing groove 11 by various coupling methods. For a plurality of different connection modes, the following list is illustrative of several possible implementation modes:

in some embodiments, the elastic member 2 is coated with an adhesive such that the elastic member 2 can be coupled to the groove wall of the fixing groove 11 by the adhesive, i.e., the elastic member 2 is fixed in the fixing groove 11 by an adhesive.

In some embodiments, the groove edges on both sides of the fixing groove 11 extend towards the middle to form a limiting member, the plane of the limiting member is coplanar with the plane of the outer wall of the annular body 1, an annular channel is formed between the two limiting members, the elastic member 2 can enter the fixing groove 11 through the annular channel, and after entering the fixing groove 11, the elastic member 2 abuts against the portion of the limiting member facing the inside of the fixing groove, so that the elastic member 2 is limited in the fixing groove 11 by the limiting member.

It is understood that the manner of fixing the elastic member 2 in the fixing groove 11 may be other manners as long as the elastic member 2 can be fixed in the fixing groove 11, and is not particularly limited herein.

In a possible realization, the elastic element 2 is affixed to the outer wall of the annular body 1, that is to say, the elastic element 2 is fixed directly to the outer wall of the annular body 1.

Through with elastic component 2 snap-on the outer wall of annular body 1, can avoid when bearing fixed knot constructs and the speed reducer casing bumps, elastic component 2 produces the displacement because the atress.

In this embodiment, the elastic member 2 may be an annular rubber sheet, so that the elastic member 2 may have a large contact area with the annular body 1.

Embodiments of the present application also provide a bearing assembly, see fig. 3, comprising a bearing securing structure and a first bearing 3 as defined in the embodiments above.

Wherein the first bearing 3 is in contact with the inner wall of the annular body 1.

Further, the first bearing 3 is located in a hollow portion formed by the first annular portion 12, and is in contact with an inner wall of the first annular portion 12.

Based on used the bearing fixed knot who defines in the above-mentioned embodiment to construct, through being located elastic component 2 and the speed reducer casing connection on the bearing fixed knot constructs 1 outer wall, because the elastic component 2 that sets up can be by elastic compression to fill the small gap between bearing fixed knot structure and the speed reducer casing, make the bearing assembly that this application embodiment provided can avoid the vehicle to turn to in situ or produce the abnormal sound when passing uneven road surface, ensure that vehicle driver and crew has good driving and experience.

It will be appreciated that the annular body 1 is annular, that is to say the annular body 1 has a cavity in the middle, and when the first bearing 3 is connected to the annular body 1, the first bearing 3 is located in the cavity in the middle of the annular body 1.

In some embodiments, there is an interference fit between the first bearing 3 and the annular body 1, such that the first bearing 3 is fixed on the bearing fixing structure.

In some embodiments, the material of the first bearing 3 includes an alloy, and the like, and is not particularly limited herein.

Embodiments of the present application also provide a speed reducer, see fig. 4, comprising a housing 4 and a bearing assembly as defined in the embodiments above.

Wherein the bearing assembly is located within the housing 4 and the resilient member 2 is in contact with the inner wall of the housing 4.

Based on the bearing assembly defined in the embodiment, the speed reducer provided by the embodiment of the application can avoid abnormal sound generated when a vehicle turns on site or passes through an uneven road surface, and ensures that a vehicle driver and passengers have good driving experience.

In some embodiments, referring to fig. 4, the speed reducer comprises a worm wheel shaft 6 and a worm wheel 7, and the worm wheel 7 is in a ring structure and is sleeved on the worm wheel shaft 6. The worm wheel 7 and the worm wheel shaft 6 are in interference fit to realize fastening connection.

It can be understood that the reducer generally supports the worm wheel shaft 6 through two bearings, and limits the worm wheel 7, that is, the worm wheel shaft 6 is located in a cavity inside the two bearings, and the worm wheel shaft 6 is better supported through the cooperation of the first bearing 3 and the second bearing 5; meanwhile, one side of the worm wheel 7 is connected with the first bearing 3, and the other side of the worm wheel 7 is connected with the second bearing 5. The worm wheel 7 is limited by the matching of the first bearing 3 and the second bearing 5.

Referring to fig. 4, the speed reducer provided by the embodiment of the present application further includes a second bearing 5, the housing 4 has an accommodating cavity, and the second bearing 5 is located in the accommodating cavity and contacts with an inner wall of the housing 4.

In some embodiments, there is an interference fit between the second bearing 5 and the housing 4 to achieve a secure connection of the second bearing 5 on the housing 4.

In some embodiments, the second bearing 5 is sleeved on the worm gear shaft 6, and the second bearing 5 and the worm gear shaft 6 are in transition fit.

In some embodiments, referring to fig. 4, the reducer further comprises a first circlip 42 and a second circlip 43, the first circlip 42 and the second circlip 43 being located on opposite sides of the second bearing 5.

In some embodiments, the first and

second springs

42 and 43 are made of spring steel.

Spring steel is a steel with a certain elasticity, which is specially used for manufacturing springs and elastic elements, and which can bear a certain load within a specified range, and which does not undergo permanent deformation after the load is removed. The spring steel should have excellent mechanical properties, high purity and uniformity, and good surface quality.

It will be appreciated that the first and

second circlips

42, 43 are identical in shape and function, with only a dimensional difference.

The first circlip 42 will be described as an example. Referring to fig. 5, the first circlip 42 includes a ring body 421, and a first end 422 and a second end 423 located on the ring body 421, wherein the ring body 421 is a "C" shaped structure, and the first end 422 and the second end 423 are located at two opposite ends of the "C" shape, respectively.

In some embodiments, referring to fig. 5, the first end 422 has a first securing aperture 424 and the second end has a second securing aperture 425.

So set up, when being convenient for when first jump ring 42 is fixed to needs, jump ring pincers can stretch into first fixed orifices 424 and second fixed orifices 425, realize the dismouting to first jump ring 42.

In some embodiments, referring to fig. 5, first fixing hole 424 and second fixing hole 425 may both be circular.

In some embodiments, referring to fig. 4, the housing 4 includes a first sub-housing 41 and a second sub-housing 44, the first sub-housing 41 and the second sub-housing 44 cooperating to form the reducer housing 4.

In a possible example, taking two elastic members 2 shown in fig. 1 as an example for illustration, the installation of the speed reducer provided by the embodiment of the present application can be realized through the following steps:

step one, referring to fig. 6, the worm wheel 7 is press-fitted onto the worm wheel shaft 6, that is, the worm wheel shaft 6 is placed in the cavity of the worm wheel 7, so that the worm wheel shaft 6 is in interference connection with the worm wheel 7.

And step two, press-fitting the second bearing 5 onto the first sub-housing 41, so that the second bearing 5 is in interference fit with the first sub-housing 41, and then installing the second snap spring 43.

And step three, the two elastic pieces 2 are arranged on the outer wall of the annular body 1 in a ring mode one by one to form a bearing fixing structure.

Step four, fixedly connecting the first bearing 3 to a bearing fixing structure to obtain a bearing assembly, wherein the first bearing 3 is in interference fit with the bearing fixing structure; the bearing assembly is connected to the worm wheel shaft 6 and the side of the bearing assembly where the first bearing 3 is located is connected to the side of the worm wheel 7.

And step five, mounting the integral structure consisting of the worm wheel 7, the worm wheel shaft 6 and the bearing assembly on the first sub-shell 41, wherein the worm wheel shaft 6 is in transition fit with the second bearing 5, and then mounting the first clamp spring 42.

And step six, fixedly connecting the first sub-shell 41 with the second sub-shell 44.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. The utility model provides a bearing fixed knot constructs which characterized in that, bearing fixed knot constructs includes: an annular body (1) and at least one elastic element (2);

the at least one elastic piece (2) is annularly arranged on the outer wall of the annular body (1).

2. Bearing fixation structure as in claim 1, characterized in that the annular body (1) has at least one fixation groove (11) on its outer wall;

the at least one elastic member (2) is fixed in the at least one fixing groove (11) in a one-to-one correspondence, and a portion of the elastic member (2) protrudes out of the fixing groove (11).

3. The bearing fixing structure according to claim 2, wherein when the number of the fixing grooves (11) is two or more, adjacent two fixing grooves (11) are provided in parallel on the outer wall of the ring body (1).

4. Bearing fixation according to claim 1, characterized in that said at least one elastic element (2) is affixed to the outer wall of said annular body (1).

5. The bearing fixing structure according to claim 1, wherein the elastic member (2) is an annular rubber ring or an annular rubber sheet.

6. Bearing fixation structure according to claim 1, characterized in that the annular body (1) comprises a first annular portion (12) and a second annular portion (13) which are integrally formed,

the circle centers of the first annular part (12) and the second annular part (13) are overlapped, the outer ring radius of the second annular part (13) is larger than that of the first annular part (12), and the at least one elastic piece (2) is annularly arranged on the outer wall of the second annular part (13).

7. Bearing fixation arrangement according to claim 6, characterized in that the annular body (1) further comprises at least one fixation part (14),

the at least one fixing part (14) is located on one side, away from the first annular part (12), of the second annular part (13), and each fixing part (14) is provided with a limiting hole.

8. The bearing fixing structure according to claim 6, wherein the first annular portion (12) has a plurality of reinforcing members (121) on an outer wall thereof,

the plurality of reinforcing pieces (121) are annularly arranged on the outer wall of the first annular part (12) at equal intervals, and one side of each reinforcing piece (121) is connected with the second annular part (13).

9. A bearing assembly, characterized in that the bearing assembly comprises a bearing securing structure according to any of claims 1-8 and a first bearing (3),

the first bearing (3) is in contact with the inner wall of the annular body (1).

10. A reducer, characterized in that it comprises a housing (4) and a bearing assembly according to claim 9;

the bearing assembly is located within the housing (4) and the at least one resilient member (2) is in contact with an inner wall of the housing (4).