阅读说明：本技术 滚动轴承组件 (Rolling bearing assembly ) 是由 吴杰 王海阔 于 2021-09-01 设计创作，主要内容包括：本发明涉及滚动轴承组件,其包括滚动轴承和用于滚动轴承的非工作状态的锁紧装置,滚动轴承包括外圈和内圈,内圈包括沿滚动轴承的径向朝外延伸出的法兰部,锁紧装置包括：第一连接件,其连接到滚动轴承的外圈；以及第二连接件,其连接到滚动轴承的内圈的法兰部,第二连接件同时连接到第一连接件,从而连同第一连接件一起使滚动轴承的外圈和内圈相对于彼此固定。因此,根据本发明的滚动轴承组件能够防止滚动轴承在处于非工作状态时出现假性布氏压痕,从而减少轴承噪音并提高轴承使用寿命。(The invention relates to a rolling bearing assembly comprising a rolling bearing and a locking device for the rolling bearing in an inoperative state, the rolling bearing comprising an outer ring and an inner ring, the inner ring comprising a flange portion extending radially outwards of the rolling bearing, the locking device comprising: a first connecting member connected to an outer ring of the rolling bearing; and a second connecting member connected to the flange portion of the inner ring of the rolling bearing, the second connecting member being simultaneously connected to the first connecting member so as to fix the outer ring and the inner ring of the rolling bearing relative to each other together with the first connecting member. Therefore, the rolling bearing assembly according to the present invention can prevent the occurrence of false brinell marks when the rolling bearing is in a non-operating state, thereby reducing bearing noise and improving bearing service life.)

1. Rolling bearing assembly comprising a rolling bearing (20) and a locking device (10) for the rolling bearing (20) in a non-operating condition, the rolling bearing (20) comprising an outer ring (21) and an inner ring (22), the inner ring (22) comprising a flange portion extending radially outwards of the rolling bearing (20), characterized in that the locking device (10) comprises:

a first connecting piece (11) connected to the outer ring (21) of the rolling bearing (20); and

-a second connection (12) connected to the flange portion (221) of the inner ring (22) of the rolling bearing (20), the second connection (12) being simultaneously connected to the first connection (11) so as to fix the outer ring (21) and the inner ring (22) of the rolling bearing (20) relative to each other together with the first connection (11).

2. Rolling bearing assembly according to claim 1,

the first connecting piece (11) is in threaded connection with the outer ring (21) of the rolling bearing (20), the first connecting piece (11) is in threaded connection with the second connecting piece (12), and the second connecting piece (12) is in threaded connection with the flange portion (221) of the inner ring (22) of the rolling bearing (20).

3. Rolling bearing assembly according to claim 1,

the first connecting piece (11) is sleeved on the outer ring (21) and connected with the outer peripheral surface of the outer ring (21), and the second connecting piece (12) is sleeved on the first connecting piece (11) and connected with the outer peripheral surface of the first connecting piece (11) and the flange portion (221) of the inner ring (22) respectively.

4. Rolling bearing assembly according to claim 1,

the second connecting member (12) includes a first connecting portion (122) and a second connecting portion (123), the first connecting portion (122) connects the second connecting member (12) with the flange portion (221) of the inner ring (22), and the second connecting portion (123) connects the second connecting member (12) with the first connecting member (11).

5. Rolling bearing assembly according to claim 4,

the second connecting piece (12) further comprises a second body portion (121), and the first connecting portion (122) and the second connecting portion (123) extend from the second body portion (121) inward in the radial direction of the rolling bearing (20).

6. Rolling bearing assembly according to claim 5,

the first connecting piece (11) includes a first body portion (111) and a protruding portion (112) extending outward from the first body portion (111) in a radial direction of the rolling bearing (20), and the second connecting piece (12) further includes a groove portion (124) recessed from the second body portion (121) in the radial direction of the rolling bearing (20), the groove portion (124) accommodating the protruding portion (112).

7. Rolling bearing assembly according to claim 6,

the groove portion (124) is provided between the first connection portion (122) and the second connection portion (123), and the protrusion portion (112) of the first connector (11) abuts with its side surface against the second connection portion (123).

8. Rolling bearing assembly according to claim 7,

the second connection part (123) has a greater extension in the radial direction of the rolling bearing (20) than the first connection part (122) in the radial direction of the rolling bearing (20).

9. Rolling bearing assembly according to claim 1,

the rolling bearing assembly further comprises a locking member (13) which enables the first connecting member (11) and the second connecting member (12) to be fixed to each other, and the locking member (13) abuts against one end, far away from the inner ring (22), of the flange portion (221) of the second connecting member (12).

10. Rolling bearing assembly according to claim 9, in which the retaining member (13) is fitted over the first connecting piece (11) and is in threaded connection with the outer peripheral surface of the first connecting piece (11).

Technical Field

The invention relates to a protection device of a bearing, in particular to a rolling bearing assembly for preventing false brinell marks from being generated when a rolling bearing is in a non-working state.

Background

Devices (such as vehicles) using rolling bearings, particularly deep groove ball bearings or angular contact ball bearings, may cause the rolling bearings to generate false brinell marks to different degrees due to the effects of vibration or rolling during transportation or storage, thereby damaging the surfaces of the bearing ring raceways and the rolling elements, which may cause the bearings to generate a little noise during use and affect the service life of the bearings.

The existing solutions are to use special grease or to apply a suitable axial pretension to the bearing in order to reduce the frictional wear in the contact area between the rolling elements and the raceways or to suppress the relative movement between the rolling elements and the raceways of the bearing rings by means of an axial pretension. However, these solutions do not solve the problem fundamentally, false brinell marks still exist, the raceway working surface and the rolling element surface are still damaged, and therefore bearing noise still occurs and the service life of the bearing is affected.

Disclosure of Invention

It is therefore an object of the present invention to provide a rolling bearing assembly capable of preventing false brinell marks from occurring when a rolling bearing is in a non-operating state, thereby reducing bearing noise and improving bearing life.

According to the invention, there is provided a rolling bearing assembly comprising a rolling bearing and a locking device for the rolling bearing in a non-operating state, the rolling bearing comprising an outer ring and an inner ring, the inner ring comprising a flange portion extending radially outwards of the rolling bearing, the locking device comprising: a first connecting member connected to an outer ring of the rolling bearing; and a second connecting member connected to the flange portion of the inner ring of the rolling bearing, the second connecting member being simultaneously connected to the first connecting member so as to fix the outer ring and the inner ring of the rolling bearing relative to each other together with the first connecting member.

According to the foregoing embodiment of the invention, the first connecting member and the outer ring of the rolling bearing, the first connecting member and the second connecting member, and the second connecting member and the flange portion of the inner ring of the rolling bearing are connected via the screw threads, respectively.

According to the foregoing embodiment of the present invention, the first connecting member is sleeved on the outer ring and connected to the outer circumferential surface of the outer ring, and the second connecting member is sleeved on the first connecting member and connected to the outer circumferential surface of the first connecting member and the flange portion of the inner ring, respectively.

According to the foregoing embodiment of the present invention, the second connecting member includes the first connecting portion connecting the second connecting member with the flange portion of the inner ring, and the second connecting portion connecting the second connecting member with the first connecting member.

According to the foregoing embodiment of the invention, the second connecting member further includes a second body portion from which the first connecting portion and the second connecting portion extend inward in the radial direction of the rolling bearing.

According to the foregoing embodiment of the present invention, the first connecting member includes the first body portion and the projecting portion extending outward from the first body portion in the radial direction of the rolling bearing, and the second connecting member further includes the groove portion recessed from the second body portion in the radial direction of the rolling bearing, the groove portion accommodating the projecting portion.

According to the foregoing embodiment of the invention, the groove portion is provided between the first connection portion and the second connection portion, and the protruding portion of the first connector abuts with its side surface against the second connection portion.

According to the foregoing embodiment of the invention, the extension of the second connecting portion in the radial direction of the rolling bearing is greater than the extension of the first connecting portion in the radial direction of the rolling bearing.

According to the aforementioned embodiment of the present invention, the locking device further includes a locking member that fixes the first connecting member and the second connecting member to each other, the locking member abutting against an end of the second connecting member that is away from the flange portion of the inner race.

According to the foregoing embodiment of the invention, the locking member is fitted over the first connecting member and is screwed with the outer peripheral surface of the first connecting member

Therefore, according to the rolling bearing assembly of the embodiment of the present invention, the outer ring and the inner ring of the rolling bearing can be fixedly coupled to each other by means of the first coupling member and the second coupling member without any displacement or deflection of the outer ring and the inner ring, thereby suppressing any angular displacement of the rolling elements between the inner raceway of the outer ring and the outer raceway of the inner ring, thereby preventing the occurrence of false brinell marks on the working surfaces of the inner and outer raceways and the surfaces of the rolling elements, reducing bearing noise, and improving bearing life.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present invention will be described below by referring to the accompanying drawings.

Fig. 1 shows a schematic cross-sectional view of a rolling bearing assembly according to the invention.

Fig. 2 shows an enlarged cross-sectional schematic view of a rolling bearing assembly according to the invention.

Fig. 3 shows a schematic cross-sectional view of a rolling bearing assembly according to the invention in a non-operative state.

Fig. 4 shows a schematic cross-sectional view of a rolling bearing assembly according to the invention in an operating state.

The drawings are not necessarily drawn to scale.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the described embodiments.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "inner", "outer", and the like, indicate an orientation or positional relationship merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error.

The following description is given with reference to the orientation words as shown in the drawings, and is not intended to limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

For a better understanding of the present invention, a rolling bearing assembly according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

According to the rolling bearing assembly of the embodiment of the present invention, including the rolling bearing 20 and the locking device 10 for the non-operation state of the rolling bearing 20, the locking device 10 may be installed on the rolling bearing 20 between the wheel and the knuckle of the vehicle, so as to prevent false brinell marks from occurring on the rolling bearing 20 when in the non-operation state, thereby reducing bearing noise and improving bearing service life.

As shown in fig. 1, the rolling bearing 20 includes an outer ring 21, an inner ring 22, and rolling elements 23 interposed between the outer ring 21 and the inner ring 22. The outer race 21 is typically connected to a steering knuckle. The inner ring 22 includes a flange portion 221 extending outward in the radial direction of the rolling bearing 20, and the flange portion 221 can be fixedly connected to the rim of the wheel by, for example, screws or the like.

With continued reference to fig. 1, the locking device 10 is mounted to a rolling bearing 20 and includes a first connector 11, a second connector 12 and a retaining member 13. The first connecting member 11, the second connecting member 12 and the locking member 13 are made of a material such as polymer or steel, respectively. The first connecting piece 11 is connected to the outer ring 21 of the rolling bearing 20. The second connecting member 12 is connected to the flange portion 221 of the inner ring 22 of the rolling bearing 20. Meanwhile, the second connecting member 12 is connected to the first connecting member 11, so that the first connecting member 11 and the second connecting member 12 can be engaged with each other to fix the outer ring 21 and the inner ring 22 of the rolling bearing 20 relative to each other without any movement (including axial movement, radial movement, and angular deflection).

Thus, according to the locking device 10 of the embodiment of the present invention, the outer ring 21 and the inner ring 22 of the rolling bearing 20 can be fixedly coupled to each other by means of the first coupling member 11 and the second coupling member 12 without any displacement or deflection of the outer ring 21 and the inner ring 22, thereby suppressing any angular displacement of the rolling elements 23 between the inner raceway of the outer ring 21 and the outer raceway of the inner ring 22, thereby preventing the occurrence of false brinell marks on the working surfaces of the inner and outer raceways and the surfaces of the rolling elements 23, reducing bearing noise, and improving the service life of the bearing.

The first connecting member 11 extends in the axial direction of the rolling bearing 20 (i.e., the X direction in fig. 1). The first connecting piece 11 is coaxially fitted over the outer ring 21 of the rolling bearing 20 and is connected to the outer circumferential surface of the outer ring 21. Exemplarily, the first connection piece 11 is connected to the outer ring 21 of the rolling bearing 20 via a thread. Specifically, an outer circumferential surface of the outer ring 21 of the rolling bearing 20 is formed with an external thread, and an inner circumferential surface of the first connecting member 11 is formed with an internal thread, whereby the first connecting member 11 and the outer ring 21 of the rolling bearing 20 can be connected to each other by means of engagement of the internal thread and the external thread when the first connecting member 11 is fitted over the outer ring 21 of the rolling bearing 20. Preferably, the entire inner peripheral surface of the first connecting member 11 is formed with an internal thread, which contributes to a reliable connection between the first connecting member 11 and the outer ring 21 of the rolling bearing 20. In addition, as shown in fig. 1 and 2, the first connecting member 11 includes a substantially annular first body portion 111 and a protruding portion 112 extending outward from the first body portion 111 in a radial direction (i.e., a Y direction in fig. 1) of the rolling bearing 20. Preferably, the first body portion 111 and the protrusion portion 112 are each provided with an external thread.

The second connecting member 12 extends in the axial direction (i.e., the X direction in fig. 1) of the rolling bearing 20. The second connecting member 12 is coaxially fitted over the first connecting member 11 and is connected to the outer circumferential surface of the first connecting member 11 and the flange portion 221 of the inner ring 22, respectively. As shown in fig. 2, one end of the second connecting member 12 near the flange portion 221 abuts against the flange portion 221. The second connecting member 12 includes a second substantially annular body portion 121, a first connecting portion 122 and a second connecting portion 123, the first connecting portion 122 and the second connecting portion 123 extending from the second body portion 121 inward in the radial direction of the rolling bearing 20, wherein the first connecting portion 122 is used for connecting the second connecting member 12 with the flange portion 221 of the inner ring 22 of the rolling bearing 20, and the second connecting member 12 is connected with the first connecting member 11. Exemplarily, the second connection 12 is connected to the flange 221 of the inner ring 22 of the rolling bearing 20 via a screw thread. Specifically, the flange portion 221 of the inner ring 22 of the rolling bearing 20 is formed with a stepped portion on which a male screw extending in the axial direction of the rolling bearing 20 is formed, and the inner peripheral surface of the first connecting portion 122 of the second connecting member 12 is formed with a female screw, whereby the flange portion 221 of the inner ring 22 of the rolling bearing 20 and the second connecting member 12 can be connected to each other by means of the engagement of the female screw and the male screw. Furthermore, the second connection 12 is connected to the first connection 11, for example, via a screw thread. Specifically, an external thread is formed on an outer circumferential surface of the first body portion 111 of the first connector 11, and an internal thread is formed on an inner circumferential surface of the second connecting portion 123 of the second connector 12, whereby the second connector 12 and the first connector 11 can be coupled to each other by engagement of the internal thread and the external thread when the second connector 12 is fitted over the first connector 11.

Therefore, according to the embodiment of the present invention, since the first connecting member 11 is fitted over the outer ring 21 of the rolling bearing 20 and the second connecting member 12 is fitted over the first connecting member 11, when the first connecting member 11 and the second connecting member 12 connect the outer ring 21 and the inner ring 22 of the rolling bearing 20 to each other, the relative standstill of the outer ring 21 and the inner ring 22 in the radial direction of the rolling bearing 20 is achieved.

Further, as shown in fig. 1 and 2, the second connecting member 12 further includes a groove portion 124 recessed from the second body portion 121 in the radial direction of the rolling bearing 20, the groove portion 124 corresponding to the protrusion portion 112 of the first connecting member 11. Specifically, the width of the groove portion 124 of the second link 12 in the axial direction of the rolling bearing 20 is larger than the width of the protrusion portion 112 of the first link 11 in the axial direction of the rolling bearing 20, and therefore the groove portion 124 can accommodate the protrusion portion 112 of the first link 11, whereby the axial displacement of the first link 11 relative to the second link 12 can be restricted. Specifically, the groove portion 124 is provided between the first connection portion 122 and the second connection portion 123 in the axial direction of the rolling bearing 20. Therefore, when the projecting portion 112 of the first connecting piece 11 is received in the groove portion 124, the projecting portion 112 abuts with its side surface away from the flange portion 221 of the inner ring 22 of the rolling bearing 20 against the second connecting portion 123, whereby the second connecting portion 123 can also serve to suppress the axial rightward movement of the first connecting piece 11 relative to the second connecting piece 12. Preferably, in order for the second connecting portion 123 to reliably achieve the stopper effect, the extension length of the second connecting portion 123 in the radial direction of the rolling bearing 20 is set to be greater than the extension length of the first connecting portion 122 in the radial direction of the rolling bearing 20.

Therefore, in the locking device 10 according to the embodiment of the present invention, since the protrusion portion 112 of the first link 11 is received in the groove portion 124 of the second link 12, the mutual mating of the protrusion portion 112 and the groove portion 124 can restrict the first link 11 and the second link 12 from being axially moved relative to each other.

In addition, the first connecting member 11 is further formed with a stopper portion 113 extending inward from the inner peripheral surface of the first body portion 111 in the radial direction of the rolling bearing 20. The stopper portion 113 is provided at an end of the first connecting member 11 away from the flange portion 221 of the inner ring 22 of the rolling bearing 20. Therefore, when the first connecting member 11 is screwed into the outer ring 21 of the rolling bearing 20, the stopper portion 113 can prevent the first connecting member 11 from contacting the flange portion 221 of the inner ring 22 of the rolling bearing 20 due to over-screwing of the first connecting member 11, and thus can prevent the first connecting member 11 connected to the outer ring 21 of the rolling bearing 20 and the inner ring 22 of the rolling bearing 20 from interfering with each other.

In addition, with continued reference to FIGS. 1 and 2, a retaining member 13 is disposed between first coupling member 11 and second coupling member 12 to secure first coupling member 11 and second coupling member 12 relative to one another without axial movement therebetween. The locking member 13 is fitted over the first connecting member 11 and connected to the outer peripheral surface of the first connecting member 11. Exemplarily, the locking member 13 may be, for example, a locking nut or the like, and the locking member 13 and the first connecting member 11 are connected via a screw. Specifically, the outer circumferential surface of the first body portion 111 of the first connecting member 11 is formed with an external thread, and the inner circumferential surface of the locking member 13 is formed with an internal thread, whereby the locking member 13 and the first connecting member 11 can be connected to each other by means of engagement of the internal thread and the external thread when the locking member 13 is fitted over the first connecting member 11. Retaining member 13 abuts on the end of second connecting member 12 remote from flange portion 221 of inner ring 22, and the outer peripheral surface of retaining member 13 is flush with the outer peripheral surface of second connecting member 12.

Therefore, in the locking device 10 according to the embodiment of the present invention, since the end of the second connecting member 12 close to the flange portion 221 of the inner ring 22 abuts against the flange portion 221 and the end of the second connecting member 12 far from the flange portion 221 of the inner ring 22 abuts against the locker 13, the locker 13 can restrict the second connecting member 12 from being displaced axially relative to the inner ring 22. Meanwhile, since the protrusion 112 of the first connecting member 11 is received in the groove portion 124 of the second connecting member 12, the protrusion 112 and the groove portion 124 are matched with each other to limit the axial displacement (for example, the movement to the right in the axial direction) of the first connecting member 11 relative to the second connecting member 12, and the stopping portion 113 is disposed at one end of the first connecting member 11 away from the flange portion 221 of the inner ring 22 of the rolling bearing 20, so that the stopping portion 113 can limit the axial displacement (for example, the movement to the left in the axial direction) of the first connecting member 11 relative to the outer ring 21. Since the axial displacement between the first connecting member 11 relative to the outer ring 21, the axial displacement between the first connecting member 11 relative to the second connecting member 12, and the axial displacement between the second connecting member 12 relative to the inner ring 22 are all restricted, when the first connecting member 11 and the second connecting member 12 connect the outer ring 21 and the inner ring 22 of the rolling bearing 20 to each other, it is possible to achieve relative standstill of the outer ring 21 and the inner ring 22 in the axial direction of the rolling bearing 20.

Therefore, when the outer ring 21 and the inner ring 22 are restricted by the locking device 10 to be stationary relative to each other in both the radial direction and the axial direction of the rolling bearing 20, the rolling bodies 23 do not make any angular displacement between the inner raceway of the outer ring 21 and the outer raceway of the inner ring 22, whereby it is possible to prevent false brinell marks from occurring on the working surfaces of the inner and outer raceways and the surfaces of the rolling bodies 23, thereby reducing bearing noise and improving bearing life.

Fig. 3 and 4 show a schematic cross-sectional view of two states of the rolling bearing assembly according to the invention, respectively, wherein fig. 3 shows a non-operative state and fig. 4 shows an operative state, which are explained in detail below.

As shown in fig. 3, when the rolling bearing assembly is in a non-operating state (at this time, the rolling bearing 20 is in an operating state, for example, when the rolling bearing 20 is being driven), the locking device 10 is integrally mounted on the outer race 21 of the rolling bearing 20, at this time, the first connecting portion 122 of the second connecting member 12 is threadedly coupled to the protrusion 112 of the first connecting member 11, and the axial length of the first connecting member 11 is equal to the sum of the axial length of the second connecting member 12 and the axial length of the locking member 13. At this time, although the first connecting member 11 is connected to the outer ring 21 of the rolling bearing 20, the second connecting member 12 is not connected to the inner ring 22 of the rolling bearing 20, and thus the locking device 10 does not fixedly connect the outer ring 21 and the inner ring 22 of the rolling bearing 20 to each other.

As shown in fig. 4, when the rolling bearing assembly is in the operating state (at this time, the rolling bearing 20 is in the non-operating state, for example, the rolling bearing 20 is in the transportation process), the second connecting member 12 is screwed leftward to be threadedly connected to the flange portion 221 of the inner ring 22 of the rolling bearing 20 until the end of the second connecting member 12 close to the flange portion 221 of the inner ring 22 abuts against the flange portion 221, at which time the protruding portion 112 of the first connecting member 11 is received in the groove portion 124 of the second connecting member 12, and at the same time, the retaining member 13 is screwed leftward until it abuts against the end of the second connecting member 12 far from the flange portion 221 of the inner ring 22. In this way, the locking device 10 can connect and fix the outer ring 21 and the inner ring 22 of the rolling bearing 20 to each other to restrict relative displacement of the two in the axial direction and the radial direction of the rolling bearing 20, so that false brinell marks can be prevented from occurring on the working surfaces of the inner and outer raceways and the surface of the rolling elements 23.

While the invention has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the invention. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.