CN220354447U - Bearing assembly and transmission mechanism - Google Patents

Abstract

The utility model provides a bearing assembly and a transmission mechanism, wherein the bearing assembly comprises a bearing seat and a bearing, and the bearing is arranged in a mounting hole of the bearing seat; the bearing seat is provided with a protruding part which is positioned at the second end side of the bearing and protrudes upwards from the bottom of the hole wall of the mounting hole; the protruding end surface of the protruding portion is higher than the inner wall surface of the outer ring and lower than the outer peripheral surface of the inner ring. The bearing assembly can achieve good lubrication effect on the bearing, avoids the problem of dry grinding of the bearing caused by poor lubrication, and ensures the reliability of the bearing.

Description

Bearing assembly and transmission mechanism

Technical Field

The utility model relates to the technical field of bearings, in particular to a bearing assembly and a transmission mechanism.

Background

In the prior art, as shown in fig. 5, there is a possibility that lubricating oil is thrown onto the rolling portion 203 of the bearing 2; the lubricating oil on the rolling portion 203 is thrown to the inner wall of the outer ring 202 and the bearing housing 1 by the centrifugal force and the rolling of the rolling portion 203.

The lubricating oil thrown onto the bearing seat 1 by the rolling part 203 directly flows away; the lubricating oil thrown onto the bottom of the inner wall of the outer ring 202 by the rolling part 203 flows onto the bearing seat 1 and then flows away; the lubricating oil thrown to the top of the inner wall of the outer ring 202 on the rolling part 203 flows to the bottom of the inner wall of the outer ring 202 under the action of self gravity, flows to the bearing seat 1 and then flows away; other lubricating oil thrown onto the bearing 2 by the driving part can flow to the bottom of the bearing seat 1 along the outer edge of the bearing 2 under the action of self gravity and then flow away.

When the amount of oil splashed is sufficiently large, lubrication of the bearing 2 can be realized, and if the amount of oil splashed is small, lubrication failure of the bearing 2 is caused, and the reliability of the bearing 2 is reduced due to the lubrication failure.

Disclosure of Invention

The utility model mainly aims to provide a bearing assembly and a transmission mechanism, so as to solve the problem that the bearing in the prior art has poor lubrication risk.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a bearing assembly including a bearing housing having a mounting hole, and a bearing; the bearing comprises an inner ring, an outer ring and a rolling part arranged between the inner ring and the outer ring; the bearing is arranged in the mounting hole; the central axis of the bearing extends along the horizontal direction; the bearing is provided with a first end and a second end which are oppositely arranged along the axial direction of the bearing; the first end side of the bearing is provided with a bearing cover plate assembly so that the bearing cover plate assembly seals the first end of the bearing; the second end side of the bearing is provided with a driving piece, and the bearing seat and the driving piece are arranged at intervals along the axial direction of the bearing, so that lubricating oil on the driving piece splashes onto the second end of the bearing through the mounting hole; the bearing seat is provided with a protruding part which is positioned at the second end side of the bearing and protrudes upwards from the bottom of the hole wall of the mounting hole; the protruding end surface of the protruding portion is higher than the inner wall surface of the outer ring and lower than the outer peripheral surface of the inner ring.

Further, the rolling part is provided with a preset central axis, the preset central axis is parallel to the central axis of the bearing, and the convex end face of the convex part is positioned below the preset central axis.

Further, the protruding portion and the bearing seat are of an integrally formed structure.

Further, one of the protruding part and the bearing seat is provided with a plug-in part, and the other is provided with a plug-in hole; the plug-in part is inserted in the plug-in hole.

Further, the plug-in parts and the plug-in holes are multiple, and the plug-in parts are correspondingly plugged in the plug-in holes one by one.

Further, the bearing is a ball bearing or a roller bearing.

Further, a stop part is arranged on the bearing seat and is positioned at the second end side of the bearing, and the stop part is abutted with the second end surface of the bearing; the inner wall surface of the stopper is located between the outer wall surface and the inner wall surface of the outer ring in the radial direction of the bearing.

Further, the side of the projection facing away from the bearing is flush with the end face of the bearing housing.

According to another aspect of the present utility model, there is provided a transmission mechanism, including a transmission shaft, a bearing cover assembly, a driving member, and the bearing assembly described above, in which the transmission shaft is sequentially inserted through the bearing cover assembly, an inner ring of a bearing of the bearing assembly, and the driving member, so that the driving member drives the transmission shaft to rotate around its central axis, and the transmission shaft drives the inner ring to rotate; the drive shaft is rotatably disposed relative to the bearing cover plate assembly.

Further, the driving member is a transmission gear.

By applying the technical scheme of the utility model, the bearing assembly comprises a bearing seat and a bearing, wherein the bearing seat is provided with a mounting hole; the bearing comprises an inner ring, an outer ring and a rolling part; the rolling part is arranged between the inner ring and the outer ring so that the inner ring and the outer ring can be arranged in a relative rotation manner; the bearing is arranged in the mounting hole, and the peripheral wall of the outer ring is contacted with the hole wall of the mounting hole; the central axis of the bearing extends along the horizontal direction; the bearing is provided with a first end and a second end which are oppositely arranged along the axial direction of the bearing; the first end side of the bearing is provided with a bearing cover plate assembly so that the bearing cover plate assembly seals the first end of the bearing; the second end side of the bearing is provided with a driving piece, and the bearing seat and the driving piece are arranged at intervals along the axial direction of the bearing, so that lubricating oil on the driving piece splashes onto the second end of the bearing through the mounting hole.

The bearing seat is provided with a protruding part which is positioned at the second end side of the bearing and protrudes upwards from the bottom of the hole wall of the mounting hole; the protruding end surface of the protruding portion is higher than the inner wall surface of the outer ring and lower than the outer peripheral surface of the inner ring.

The bearing seat is provided with the protruding part, and an oil blocking groove is formed above the inner wall surface of the outer ring; the driving piece throws the lubricating oil on the driving piece onto the bearing, and the lubricating oil on the driving piece is mainly thrown onto the rolling part of the bearing; under the action of centrifugal force and rolling of the rolling part, the lubricating oil on the rolling part is thrown to the inner wall of the outer ring and the bearing seat; the lubricating oil thrown onto the bearing seat by the rolling part can directly flow away; the lubricating oil thrown onto the bottom of the inner wall of the outer ring on the rolling part is accumulated in the oil baffle groove; the lubricating oil thrown to the top of the inner wall of the outer ring on the rolling part flows to the bottom of the inner wall of the outer ring under the action of self gravity and is accumulated in the oil baffle groove; other lubricating oil thrown onto the bearing by the driving piece can flow into the oil baffle groove along the outer edge of the bearing under the action of self gravity. Therefore, the oil baffle groove achieves the purpose of oil storage; only after the oil in the oil baffle groove is fully accumulated, the lubricating oil can pass through the convex part and flow out to the bearing seat to flow away. If the oil splashing quantity is less, the bearing can be stained with the lubricating oil in the oil baffle groove when the rolling part moves into the oil baffle groove in the rotating process, and the lubricating oil is brought to the whole roller path when the rolling part rotates, so that a good lubricating effect is achieved on the bearing.

Therefore, the bearing assembly can achieve good lubrication effect on the bearing, the problem of dry grinding of the bearing caused by poor lubrication is avoided, and the reliability of the bearing is guaranteed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic view of the composition of a bearing housing, bearing, drive shaft, drive member, bearing cover plate assembly according to the present utility model;

FIG. 2 shows an enlarged view of a portion of the bearing housing and bearing of FIG. 1; wherein a preset central axis of the rolling part is shown;

FIG. 3 shows an enlarged view of a portion of the bearing housing and bearing of FIG. 1; wherein a vertical distance H between the protruding end face and the inner wall face of the outer ring is shown;

FIG. 4 shows a schematic structural view of a bearing assembly according to the present utility model;

fig. 5 shows a schematic view of the composition of a prior art bearing housing and bearing.

Wherein the above figures include the following reference numerals:

1. a bearing seat; 2. a bearing; 202. an outer ring; 203. a rolling part;

10. a bearing seat; 11. a mounting hole; 12. a protruding portion; 121. protruding end surfaces; 122. a first side; 13. a stop portion; 131. a second side; 132. a first inner wall surface; 14. a second seal ring;

20. a bearing; 21. an inner ring; 22. an outer ring; 23. a rolling part; 24. an oil baffle groove;

30. a bearing cover plate; 31. a cover plate body; 32. a connection part; 321. a boss; 33. a first seal ring; 34. an oil seal;

40. a driving member; 50. a transmission shaft; 60. and (5) a circlip.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The present utility model provides a bearing assembly, referring to fig. 1 to 4, the bearing assembly includes a bearing housing 10 and a bearing 20, the bearing housing 10 having a mounting hole 11; the bearing 20 includes an inner ring 21, an outer ring 22, and a rolling portion 23; the rolling portion 23 is provided between the inner ring 21 and the outer ring 22 so that the inner ring 21 and the outer ring 22 are rotatably provided relative to each other; the bearing 20 is arranged in the mounting hole 11, and the outer peripheral wall of the outer ring 22 is contacted with the wall of the mounting hole 11; the central axis of the bearing 20 is arranged to extend in the horizontal direction; the bearing 20 has oppositely disposed first and second ends along its axial direction; the first end side of the bearing 20 is provided with a bearing cap assembly such that the bearing cap assembly seals the first end of the bearing 20; the second end side of the bearing 20 is provided with a driving piece 40, and the bearing housing 10 and the driving piece 40 are disposed at intervals in the axial direction of the bearing 20 so that the lubricating oil on the driving piece 40 splashes onto the second end of the bearing 20 through the mounting hole 11.

The bearing seat 10 is provided with a protruding part 12, the protruding part 12 is positioned at the second end side of the bearing 20, and the protruding part 12 protrudes upwards from the bottom of the hole wall of the mounting hole 11; the protruding end surface 121 of the protruding portion 12 is higher than the inner wall surface of the outer ring 22 and lower than the outer peripheral surface of the inner ring 21; i.e., the protruding end surface 121 is located above the inner wall surface of the outer ring 22 and below the outer peripheral surface of the inner ring 21.

If no protruding part 12 is provided, the structure of the bearing seat 1 and the bearing 2 in the prior art is formed; as shown in fig. 5. When the lubricating oil on the driving piece is thrown to the bearing 2 through the mounting hole, the lubricating oil on the driving piece is mainly thrown to the rolling part 203 of the bearing 2; under the action of centrifugal force and the rolling action of the rolling part 203, the lubricating oil on the rolling part 203 can be thrown to the inner wall of the outer ring 202 and the bearing seat 1; the lubricating oil thrown onto the bearing seat 1 by the rolling part 203 directly flows away; the lubricating oil thrown onto the bottom of the inner wall of the outer race 202 by the rolling part 203 flows onto the bearing seat 1 and then flows away, as indicated by the arrowed lines in fig. 5; the lubricating oil thrown to the top of the inner wall of the outer ring 202 on the rolling part 203 flows to the bottom of the inner wall of the outer ring 202 under the action of self gravity, flows to the bearing seat 1 and then flows away; other lubricating oil thrown onto the bearing 2 by the driving part can flow to the bottom of the bearing seat 1 along the outer edge of the bearing 2 under the action of self gravity and then flow away. When the amount of oil splashed is sufficiently large, lubrication of the bearing 2 can be realized, and if the amount of oil splashed is small, lubrication failure of the bearing 2 is caused, and the reliability of the bearing 2 is reduced due to the lubrication failure.

The bearing seat 10 is provided with the protruding part 12, and an oil baffle groove 24 is formed above the inner wall surface of the outer ring 22; the driving member 40 throws the lubricant thereon onto the bearing 20, the lubricant on the driving member 40 being mainly thrown onto the rolling portion 23 of the bearing 20 as indicated by the arrowed line in fig. 1; under the action of centrifugal force and the rolling action of the rolling part 23, the lubricating oil on the rolling part 23 is thrown to the inner wall of the outer ring 22 and the bearing seat 10; the lubricating oil thrown onto the bearing seat 10 by the rolling part 23 directly flows away; the lubricating oil thrown onto the bottom of the inner wall of the outer ring 22 by the rolling part 23 is accumulated in the oil baffle groove 24; the lubricating oil thrown to the top of the inner wall of the outer ring 22 on the rolling part 23 flows to the bottom of the inner wall of the outer ring 22 under the action of self gravity and is accumulated in the oil baffle groove 24; other lubricating oil thrown onto the bearing 20 by the driving member 40 also flows into the oil baffle groove 24 along the outer edge of the bearing 20 under the action of self gravity. As can be seen, the oil baffle 24 achieves the purpose of oil storage; only after the oil in the oil deflector groove 24 is filled will the oil flow over the projection 12 and out onto the bearing seat 10 and away as indicated by the arrowed line in fig. 3. When the amount of oil splashed is small, the bearing 20 can be stained with the lubricating oil in the oil baffle groove 24 when the rolling part 23 moves into the oil baffle groove 24 in the rotating process, and the lubricating oil is brought to the whole raceway when the rolling part 23 rotates, so that a good lubricating effect is achieved on the bearing 20.

As shown in fig. 2, the lubrication oil is accumulated below a straight line L, and the straight line L is the oil baffle groove 24 or below.

After the oil blocking groove 24 is filled with the lubricating oil, some of the lubricating oil passes over the protrusion 12 and flows out onto the bearing seat 10 and then flows away, but the lubricating oil is still contained in the oil blocking groove 24; the oil baffle groove 24 can hold lubricating oil, so that continuous lubrication of the bearing 20 can be ensured, and oil lubrication of the bearing 20 can be ensured at any time.

The bearing has a raceway in which the rolling portion 23 is disposed and rotates.

Therefore, the bearing assembly can achieve good lubrication effect on the bearing 20, the problem of dry grinding of the bearing caused by poor lubrication is avoided, the reliability of the bearing 20 is guaranteed, and the problem that the bearing in the prior art has risks of poor lubrication is solved.

In addition, the bearing assembly is simple in structure and easy to realize.

Alternatively, the bearing 20 is a ball bearing, in which case the rolling portion 23 is a ball. Alternatively, the bearing 20 is a roller bearing, and the rolling portion 23 is a cylindrical roller.

In the present embodiment, the rolling portion 23 has a preset central axis O parallel to the central axis of the bearing 20, and the protruding end surface 121 of the protruding portion 12 is located below the preset central axis O. I.e. in the vertical direction, the protruding end surface 121 is lower than the preset central axis O.

When the rolling portion 23 is a ball, the ball has a plurality of central axes, each of which passes through the center of the ball; the preset central axis O is one of a plurality of central axes of the balls. When the rolling portion 23 is a cylindrical roller, the preset central axis O is the central axis of the cylindrical roller.

The vertical distance H between the protruding end surface 121 of the protruding portion 12 and the inner wall surface of the outer ring 22 is not too large, so that the lubricating oil in the oil baffle groove 24 can be continuously updated, and the phenomenon that the lubricating oil flows untimely due to excessive accumulation of the lubricating oil in the oil baffle groove 24, so that a lubricating film is broken, the lubricating action of the rolling portion 23 is invalid, and the rolling portion 23 is overheated is avoided; too much lubricant accumulated in the oil deflector 24 causes the lubricant in the oil deflector 24 to accumulate impurities, which cause wear to the rolling portion 23.

Alternatively, the vertical distance H between the protruding end face 121 of the protruding portion 12 and the inner wall face of the outer ring 22 is less than or equal to 5mm.

In the present embodiment, the first arrangement form of the projection 12 and the bearing housing 10 is: the projection 12 and the bearing housing 10 are integrally formed.

In the present embodiment, the second arrangement form of the projection 12 and the bearing housing 10 is: one of the protruding part 12 and the bearing seat 10 is provided with a plug-in part, and the other is provided with a plug-in hole; the insertion portion is inserted into the insertion hole so that a detachable structure is formed between the protrusion 12 and the bearing housing 10. In this way, when the amount of oil splashed is sufficiently large, the bearing 20 can be lubricated well without depending on the lubricating oil in the oil deflector 24, and the projection 12 can be detached from the bearing seat 10 at this time.

Specifically, if the insertion hole is provided on the bearing housing 10, the insertion hole on the bearing housing 10 may be plugged with a plugging member after the protrusion 12 is detached from the bearing housing 10.

Specifically, a plug portion or a plug hole is provided at the bottom surface of the protruding portion 12.

Optionally, the plug-in parts and the plug-in holes are multiple, and the plug-in parts are inserted in the plug-in holes in a one-to-one correspondence manner.

In the present embodiment, the bearing seat 10 is provided with a stop portion 13, the stop portion 13 is located at the second end side of the bearing 20, and the stop portion 13 abuts against the second end surface of the bearing 20; the inner wall surface of the stopper 13 is located between the outer wall surface and the inner wall surface of the outer race 22 in the radial direction of the bearing 20; wherein the radial direction of the bearing 20 is perpendicular to the axial direction thereof. The first inner wall surface 132 in fig. 1 is an inner wall surface of the stopper portion 13. The stop portion 13 is used for playing a role of stopping and fixing the second end of the bearing 20, so as to prevent the bearing 20 from shaking in the axial direction.

Alternatively, the stopper 13 is provided to extend in the circumferential direction of the mounting hole 11.

Preferably, both ends of the stopper 13 are connected to the projection 12 in the circumferential direction of the mounting hole 11.

It should be noted that the protruding portion 12 can also function as a stopper for fixing the second end of the bearing 20.

In the present embodiment, the side of the projection 12 remote from the bearing 20 is flush with the end face of the bearing housing 10. The first side 122 in fig. 2 is the side of the projection 12 remote from the bearing 20.

Specifically, in the axial direction of the bearing 20, the bearing housing 10 has oppositely disposed first and second ends; the first end to second end of the bearing housing 10 is oriented in the same direction as the first end to second end of the bearing 20. The side of the projection 12 remote from the bearing 20 is flush with the second end face of the bearing housing 10.

Specifically, the side of the stop 13 remote from the bearing 20 is flush with the second end face of the bearing housing 10. The second side 131 in fig. 1 is the side of the stop 13 facing away from the bearing 20.

In the present embodiment, the second seal ring 14 is provided on the outer peripheral wall of the bearing housing 10.

The projection 12 of the present application is not an annular structure extending in the circumferential direction of the mounting hole 11, in order to avoid reducing the lubricant that the driving member 40 throws onto the bearing 20.

The utility model also provides a transmission mechanism, which comprises a transmission shaft 50, a bearing cover plate assembly, a driving piece 40 and the bearing assembly, wherein the transmission shaft 50 sequentially penetrates through the bearing cover plate assembly, the inner ring 21 of the bearing 20 of the bearing assembly and the driving piece 40.

Specifically, the outer peripheral wall of the drive shaft 50 is in contact with the inner wall surface of the inner race 21 of the bearing 20; the central axis of the drive shaft 50 coincides with the central axis of the bearing 20.

In the specific implementation process, the driving member 40 is rotatably disposed around the central axis of the driving shaft 50 to drive the driving shaft 50 to rotate; the transmission shaft 50 drives the inner ring 21 of the bearing 20 to rotate, and at this time, the inner ring 21 of the bearing 20 rotates relative to the outer ring 22. The drive shaft 50 is rotatably disposed relative to the bearing cap assembly, i.e., the bearing cap assembly does not rotate with the drive shaft 50.

If no protruding part 12 is provided, the structure of the bearing seat 1 and the bearing 2 in the prior art is formed; as shown in fig. 5. When the driving member rotates at a high speed, the lubricating oil on the driving member is thrown to the bearing 2, and the lubricating oil on the driving member is mainly thrown to the rolling part 203 of the bearing 2; under the action of centrifugal force and the rolling action of the rolling part 203, the lubricating oil on the rolling part 203 can be thrown to the inner wall of the outer ring 202 and the bearing seat 1; the lubricating oil thrown onto the bearing seat 1 by the rolling part 203 directly flows away; the lubricating oil thrown onto the bottom of the inner wall of the outer race 202 by the rolling part 203 flows onto the bearing seat 1 and then flows away, as indicated by the arrowed lines in fig. 5; the lubricating oil thrown to the top of the inner wall of the outer ring 202 on the rolling part 203 flows to the bottom of the inner wall of the outer ring 202 under the action of self gravity, flows to the bearing seat 1 and then flows away; other lubricating oil thrown onto the bearing 2 by the driving part can flow to the bottom of the bearing seat 1 along the outer edge of the bearing 2 under the action of self gravity and then flow away. When the amount of oil splashed is sufficiently large, lubrication of the bearing 2 can be realized, and if the amount of oil splashed is small, lubrication failure of the bearing 2 is caused, and the reliability of the bearing 2 is reduced due to the lubrication failure. I.e. the bearings 2 are splash lubricated.

The bearing seat 10 is provided with the protruding part 12, and an oil baffle groove 24 is formed above the inner wall surface of the outer ring 22; when the driving member 40 rotates at a high speed, the lubricating oil on the driving member 40 is thrown to the bearing 20, and the lubricating oil on the driving member 40 is mainly thrown to the rolling part 23 of the bearing 20, as shown by arrow lines in fig. 1; under the action of centrifugal force and the rolling action of the rolling part 23, the lubricating oil on the rolling part 23 is thrown to the inner wall of the outer ring 22 and the bearing seat 10; the lubricating oil thrown onto the bearing seat 10 by the rolling part 23 directly flows away; the lubricating oil thrown onto the bottom of the inner wall of the outer ring 22 by the rolling part 23 is accumulated in the oil baffle groove 24; the lubricating oil thrown to the top of the inner wall of the outer ring 22 on the rolling part 23 flows to the bottom of the inner wall of the outer ring 22 under the action of self gravity and is accumulated in the oil baffle groove 24; other lubricating oil thrown onto the bearing 20 by the driving member 40 also flows into the oil baffle groove 24 along the outer edge of the bearing 20 under the action of self gravity. As can be seen, the oil baffle 24 achieves the purpose of oil storage; only after the oil in the oil deflector groove 24 is filled will the oil flow over the projection 12 and out onto the bearing seat 10 and away as indicated by the arrowed line in fig. 3. When the amount of oil splashed is small, the bearing 20 can be stained with the lubricating oil in the oil baffle groove 24 when the rolling part 23 moves into the oil baffle groove 24 during rotation, and the lubricating oil is brought to the whole raceway when the rolling part 23 rotates.

In particular, for the apparatus including the transmission mechanism of the present application, if the apparatus is used for a long period of time in a light load condition or a frequent start-up and stop (start-up or stop-motion) condition, particularly when the apparatus is restarted after stopping, the reliability of the bearing 20 can be well ensured. If the projection 12 is not provided, it is difficult to ensure the reliability of the bearing for a long-term use in a small load condition or a frequent start condition. For example, the device comprising the transmission of the present application is an engine, or a gearbox, or a water pump.

Specifically, the driving member 40 is a transmission gear, and the central axis of the transmission gear coincides with the central axis of the transmission shaft 50.

In the present embodiment, the bearing cover plate assembly includes a bearing cover plate 30, the bearing cover plate 30 being disposed at a first end side of the bearing 20; the bearing cover 30 comprises a cover body 31 and a connecting part 32 which are connected with each other, wherein the connecting part 32 is arranged in the mounting hole 11, and the cover body 31 is positioned outside the mounting hole 11 and at one side of the connecting part 32 away from the bearing 20; the cover plate body 31 abuts against one axial end face of the bearing housing 10. The cover plate body 31 is provided with a first penetrating hole for penetrating the transmission shaft 50, and the connecting part 32 is provided with a second penetrating hole for penetrating the transmission shaft 50.

Specifically, a first seal ring 33 is provided between the connecting portion 32 and the wall of the mounting hole 11.

Specifically, an oil seal 34 is disposed between the wall of the second through hole and the peripheral wall of the transmission shaft 50, and a gap is formed between the wall of the first through hole and the peripheral wall of the transmission shaft 50, so that the transmission shaft 50 can rotate relative to the bearing cover plate 30 under the action of the oil seal 34.

Specifically, the transmission mechanism further includes a circlip 60, the circlip 60 being located between the bearing cover plate 30 and the first end of the bearing 20 in the axial direction of the transmission shaft 50; an annular groove is formed in the peripheral wall of the transmission shaft 50, the circlip 60 is arranged in the annular groove, and the peripheral wall of the circlip 60 is located outside the annular groove.

Specifically, the end surface of the connecting portion 32 facing the bearing 20 is provided with a protruding portion 321 in a protruding manner, and the protruding portion 321 abuts against the first end surface of the bearing 20, so as to play a role in stopping and fixing the first end of the bearing 20, and further, to prevent the bearing 20 from shaking in the axial direction under the action of the protruding portion 321 and the stopping portion 13.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

in the bearing assembly provided by the utility model, the bearing assembly comprises a bearing seat 10 and a bearing 20, wherein the bearing seat 10 is provided with a mounting hole 11; the bearing 20 includes an inner ring 21, an outer ring 22, and a rolling portion 23; the rolling portion 23 is provided between the inner ring 21 and the outer ring 22 so that the inner ring 21 and the outer ring 22 are rotatably provided relative to each other; the bearing 20 is arranged in the mounting hole 11, and the outer peripheral wall of the outer ring 22 is contacted with the wall of the mounting hole 11; the central axis of the bearing 20 is arranged to extend in the horizontal direction; the bearing 20 has oppositely disposed first and second ends along its axial direction; the first end side of the bearing 20 is provided with a bearing cap assembly such that the bearing cap assembly seals the first end of the bearing 20; the second end side of the bearing 20 is provided with a driving piece 40, and the bearing housing 10 and the driving piece 40 are disposed at intervals in the axial direction of the bearing 20 so that the lubricating oil on the driving piece 40 splashes onto the second end of the bearing 20 through the mounting hole 11.

The bearing seat 10 is provided with a protruding part 12, the protruding part 12 is positioned at the second end side of the bearing 20, and the protruding part 12 protrudes upwards from the bottom of the hole wall of the mounting hole 11; the protruding end surface 121 of the protruding portion 12 is higher than the inner wall surface of the outer ring 22 and lower than the outer peripheral surface of the inner ring 21.

The bearing seat 10 is provided with the protruding part 12, and an oil baffle groove 24 is formed above the inner wall surface of the outer ring 22; the driving member 40 throws the lubricating oil thereon onto the bearing 20, the lubricating oil on the driving member 40 mainly throws the lubricating oil onto the rolling portion 23 of the bearing 20; under the action of centrifugal force and the rolling action of the rolling part 23, the lubricating oil on the rolling part 23 is thrown to the inner wall of the outer ring 22 and the bearing seat 10; the lubricating oil thrown onto the bearing seat 10 by the rolling part 23 directly flows away; the lubricating oil thrown onto the bottom of the inner wall of the outer ring 22 by the rolling part 23 is accumulated in the oil baffle groove 24; the lubricating oil thrown to the top of the inner wall of the outer ring 22 on the rolling part 23 flows to the bottom of the inner wall of the outer ring 22 under the action of self gravity and is accumulated in the oil baffle groove 24; other lubricating oil thrown onto the bearing 20 by the driving member 40 also flows into the oil baffle groove 24 along the outer edge of the bearing 20 under the action of self gravity. As can be seen, the oil baffle 24 achieves the purpose of oil storage; only when the oil in the oil deflector groove 24 is full will the oil flow out over the projection 12 and onto the bearing housing 10 and run off. When the amount of oil splashed is small, the bearing 20 can be stained with the lubricating oil in the oil baffle groove 24 when the rolling part 23 moves into the oil baffle groove 24 in the rotating process, and the lubricating oil is brought to the whole raceway when the rolling part 23 rotates, so that a good lubricating effect is achieved on the bearing 20.

Therefore, the bearing assembly can achieve good lubrication effect on the bearing 20, avoid the problem of dry grinding of the bearing caused by poor lubrication, and ensure the reliability of the bearing 20.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of being practiced otherwise than as specifically illustrated and described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A bearing assembly comprising a bearing housing (10) and a bearing (20), the bearing housing (10) having a mounting hole (11); the bearing (20) includes an inner ring (21), an outer ring (22), and a rolling portion (23) provided between the inner ring (21) and the outer ring (22); the bearing (20) is arranged in the mounting hole (11); the central axis of the bearing (20) extends along the horizontal direction; the bearing (20) has oppositely disposed first and second ends along an axial direction thereof; a bearing cover plate assembly is arranged at the first end side of the bearing (20) so that the bearing cover plate assembly seals the first end of the bearing (20); a driving piece (40) is arranged at the second end side of the bearing (20), and the bearing seat (10) and the driving piece (40) are arranged at intervals along the axial direction of the bearing (20) so that lubricating oil on the driving piece (40) splashes onto the second end of the bearing (20) through the mounting hole (11); it is characterized in that the method comprises the steps of,

the bearing seat (10) is provided with a protruding part (12), the protruding part (12) is positioned at the second end side of the bearing (20), and the protruding part (12) protrudes upwards from the bottom of the hole wall of the mounting hole (11); a protruding end surface (121) of the protruding portion (12) is higher than an inner wall surface of the outer ring (22) and lower than an outer peripheral surface of the inner ring (21).

2. Bearing assembly according to claim 1, wherein the rolling part (23) has a preset central axis, which is parallel to the central axis of the bearing (20), and the protruding end surface (121) of the protruding part (12) is located below the preset central axis.

3. Bearing assembly according to claim 1, wherein the projection (12) and the bearing housing (10) are of an integrally formed construction.

4. Bearing assembly according to claim 1, wherein one of the projection (12) and the bearing seat (10) is provided with a plug-in part and the other is provided with a plug-in hole; the plug-in part is inserted in the plug-in hole.

5. The bearing assembly of claim 4, wherein the plug-in portions and the plug-in holes are multiple, and the plug-in portions are inserted in the plug-in holes in a one-to-one correspondence.

6. Bearing assembly according to claim 1, wherein the bearing (20) is a ball bearing or a roller bearing.

7. Bearing assembly according to claim 1, characterized in that the bearing housing (10) is provided with a stop (13), the stop (13) being located at the second end side of the bearing (20), the stop (13) being in abutment with the second end face of the bearing (20); the inner wall surface of the stopper portion (13) is located between the outer wall surface and the inner wall surface of the outer ring (22) in the radial direction of the bearing (20).

8. Bearing assembly according to claim 1, characterized in that the side of the projection (12) facing away from the bearing (20) is flush with the end face of the bearing housing (10).

9. A transmission mechanism, characterized by comprising a transmission shaft (50), a bearing cover plate assembly, a driving member (40) and the bearing assembly according to any one of claims 1 to 8, wherein the transmission shaft (50) is sequentially arranged on the bearing cover plate assembly, an inner ring (21) of a bearing (20) of the bearing assembly and the driving member (40) in a penetrating manner, so that the driving member (40) drives the transmission shaft (50) to rotate around the central axis thereof, and the transmission shaft (50) drives the inner ring (21) to rotate; the drive shaft (50) is rotatably disposed relative to the bearing cover assembly.

10. A transmission mechanism according to claim 9, wherein the driving member (40) is a transmission gear.