CN113280047B - Composite bearing structure - Google Patents

Abstract

A composite bearing structure is used for accommodating a shaft center; the composite bearing structure comprises a shaft sleeve, a bearing and a first flow blocking member; the shaft sleeve has an accommodating space; the bearing is arranged in the accommodating space of the shaft sleeve space, the bearing has a shaft hole; the shaft hole is used for accommodating the shaft center; the bearing and the shaft sleeve form a chamber; the chamber communicates with the shaft hole; The present invention can effectively increase the flow path length of the lubricating oil in the chamber by arranging the first blocking member in the chamber and sleeved on the bearing, so that the lubricating oil is not easy to leak out from the small gap between the shaft sleeve and the bearing. .

Description

Composite bearing structure

technical field

The invention relates to a composite bearing structure, in particular to a composite bearing structure with a flow blocking member.

Background technique

In mechanical structures, rotating elements are often used to transmit power or change the shape. In order to make the components rotate smoothly, most of the bearing structures are used to support the rotating components, and lubricating oil is injected between the bearing structure and the rotating components to reduce the frictional force generated when the rotating components rotate in the bearing structure.

However, the frictional force between the rotating element and the bearing structure during operation will be converted into heat energy. Once the lubricating oil is heated, its fluidity will increase, and the lubricating oil will easily leak out from the gap of the bearing structure, causing the rotating element and the bearing structure to leak. The lubricating oil between the bearing structures is easily insufficient, and the frictional force generated when the rotating element rotates in the bearing structure cannot be effectively reduced. In addition, in response to technological development, a variety of miniaturized bearing structures have also been introduced. These miniaturized bearing structures can store a smaller amount of lubricating oil because the overall volume becomes smaller. The lubricating oil that has not been stored in the interior is more likely to increase its fluidity due to heat, which makes it less effective to reduce the friction between the rotating element and the bearing structure, and even seriously reduces the service life of the rotating element.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a composite bearing structure in view of the deficiencies of the prior art, so as to solve the problem that lubricating oil is easy to leak out from the gap of the composite bearing structure.

The technical problem to be solved by the present invention is achieved through the following technical solutions:

The composite bearing structure disclosed in an embodiment of the present invention is used for accommodating a shaft. The composite bearing structure includes a bushing, a bearing and a first spoiler. The shaft sleeve has an accommodating space. The bearing is arranged in the accommodating space of the shaft sleeve, and the bearing has a shaft hole. The shaft hole is used to accommodate the shaft. The bearing and the bushing form a cavity. The chamber communicates with the shaft hole. The first blocking member is arranged in the chamber and sleeved with a bearing.

In other words, the present invention provides a composite bearing structure for accommodating a shaft, the composite bearing structure comprising:

a shaft sleeve with an accommodating space;

A bearing is arranged in the accommodating space of the shaft sleeve, the bearing has a shaft hole, the shaft hole is used for accommodating the shaft center, the bearing and the shaft sleeve form a cavity, and the cavity communicates with the shaft hole ;as well as

A first blocking member is disposed in the chamber and sleeved with the bearing.

The number of the bearings is two, the two shaft holes of the two bearings are communicated with each other, the two bearings each include a main body part and a side part, the two main body parts are arranged between the two side parts, and the two side parts are tightly fitted Set on the shaft sleeve, the first baffle is sleeved on the main body part of the bearing.

The bearing comprises a main body part and a side part, the side part is arranged at one end of the main body part, the main body part is located between the shaft sleeve and the side part, the side part is tightly fitted on the shaft sleeve, the first The blocking piece is sleeved on the main body part of the bearing.

The composite bearing structure further includes a second blocking member, wherein the second blocking member is disposed in the chamber and sleeved on the main body portion, and the outer diameter of the second blocking member is smaller than the outer diameter of the first blocking member path.

The first spoiler has at least one first notch, the second spoiler has at least one second notch, and the at least one first notch and the at least one second notch are displaced.

The at least one first notch is located on the inner edge of the first spoiler, and the at least one second notch is located on the inner edge of the second spoiler.

The composite bearing structure further includes an anti-vibration structure, wherein the anti-vibration structure is arranged between the shaft sleeve and the main body portion, the anti-vibration structure includes a central portion and an outer peripheral portion, the peripheral portion surrounds the central portion, and the central portion is convex Out of the outer peripheral portion, a side of the central portion facing the shaft sleeve has a recess.

The first spoiler has a first side and a second side at the outer edge, the first side is connected to the second side, and the shortest distance from the first side to a center point of the first spoiler is less than The shortest distance from the second edge to the center point of the first spoiler.

The first baffle is a helical structure.

The shaft sleeve includes a side wall and a seat portion, and the side wall stands on the seat portion and surrounds the accommodating space.

According to the composite bearing structure disclosed in the above embodiments, the first flow blocking member is disposed in the chamber and sleeved on the bearing. In this way, the first flow blocking member can effectively increase the length of the flow path of the lubricating oil in the chamber, so that the lubricating oil cannot easily leak out from the small gap between the shaft sleeve and the bearing.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the principle of the present invention, and provide further explanation of the protection scope of the present invention.

Description of drawings

1 is a schematic perspective view of a composite bearing structure according to an embodiment of the present invention;

FIG. 2 is an exploded schematic view of the composite bearing structure of FIG. 1;

3 is a schematic cross-sectional view of the composite bearing structure of FIG. 1;

4 is an exploded schematic view of a composite bearing structure according to another embodiment of the present invention;

5 is a schematic cross-sectional view of the composite bearing structure of FIG. 4;

6 is a schematic perspective view of a composite bearing structure according to still another embodiment of the present invention;

FIG. 7 is an exploded schematic view of the composite bearing structure of FIG. 6;

8 is a schematic cross-sectional view of the composite bearing structure of FIG. 6;

9 is an exploded schematic view of a composite bearing structure according to yet another embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of the composite bearing structure of FIG. 9;

11 is an exploded schematic view of a composite bearing structure according to yet another embodiment of the present invention;

FIG. 12 is a schematic cross-sectional view of the composite bearing structure of FIG. 11 .

[Description of reference numerals]

10a, 10b, 10c, 10d, 10e composite bearing structure

100a, 100b, 100c, 100d Bushings

101a, 101c accommodating space

110a, 110b, 110c, 110d, 110e Side walls

120a, 120b seat

200a, 200b, 200c, 200d bearings

201a, 201c Shaft hole

210a, 210b, 210c, 210d main body

220a, 220b, 220c, 220d side

300a, 300b, 300c, 300d, 300e First spoiler

301a, 301e first slot

310e first side

320e second side

400a, 400e Second spoiler

401a, 401e Second slot

500a Shock Resistant Construction

510a Central Department

511a Sag

520a Peripheral

600a Gasket

601a First side

602a Second side

C chamber

C1 first oil storage space

C2 Second oil storage space

sc1 first small oil space

sc2 second small oil space

sc3 third small oil space

hxb, hxd spiral channel

Detailed ways

An embodiment of the present invention will be described below. First, please refer to FIG. 1 to FIG. 3 . FIG. 1 is a schematic perspective view of a composite bearing structure 10a according to an embodiment of the present invention. FIG. 2 is an exploded schematic view of the composite bearing structure 10a of FIG. 1 . FIG. 3 is a schematic cross-sectional view of the composite bearing structure 10a of FIG. 1 .

The composite bearing structure 10a of this embodiment is applied to, for example, a shaft center (not shown) for accommodating mechanical rotating load parts such as motors, cooling fans, general electric fans, and pen armatures. The composite bearing structure 10a includes a bushing 100a, a bearing 200a and at least one first spoiler 300a. The shaft sleeve 100a has an accommodating space 101a. The bearing 200a is, for example, an oil-impregnated bearing and is provided in the accommodating space 101a of the sleeve 100a. The bearing 200a has a shaft hole 201a. The shaft hole 201a can be used to accommodate the above-mentioned shaft. The bearing 200a and the sleeve 100a form a chamber C. The chamber C is used for accommodating lubricating oil (not shown in the figure) and communicates with the shaft hole 201a, so that the shaft center accommodated in the shaft hole 201a can obtain a lubricating effect. The first blocking member 300a is disposed in the chamber C and sleeved on the bearing 200a. The first spoiler 300a can effectively increase the length of the flow path of the lubricating oil in the chamber C. Through the composite structure of the first spoiler 300a and the bearing 200a, the lubricating oil is not easy to pass from between the shaft sleeve 100a and the bearing 200a. The tiny gap (not shown in the figure) leaks out.

Specifically, in this embodiment and some embodiments of the present invention, the bushing 100a includes a side wall 110a and a seat portion 120a. The side wall 110a stands on the seat portion 120a and surrounds the accommodating space 101a. The bearing 200a includes a main body portion 210a and a side portion 220a. The side portion 220a is provided at one end of the main body portion 210a. The main body portion 210a is located between the seat portion 120a and the side portion 220a of the bushing 100a. The side portion 220a is tightly fitted to the side wall 110a of the shaft sleeve 100a. The first spoiler 300a is sleeved on the main body portion 210a of the bearing 200a. That is to say, the lubricating oil in the chamber C can not easily leak out from the small gap between the shaft sleeve 100a and the bearing 200a through the closely fitted side walls 110a and the side parts 220a; in addition, when the lubricating oil is heated and vaporized It is also difficult for the small gap between the shaft sleeve 100a and the bearing 200a to escape out. It should be noted that, in this embodiment and some embodiments of the present invention, the main body portion 210a and the side portion 220a of the bearing 200a are integrally formed, but the present invention is not limited thereto. In some embodiments, the main body portion and the side portion can also be a two-piece structure. Besides, in this embodiment and some embodiments of the present invention, the first flow blocking member 300a is circular at the outer edge, but the present invention is not limited to this. In some embodiments, the first flow blocking member may also have a cut edge at the outer edge, the details of which will be described below with reference to the embodiments of FIGS. 11 to 12 .

In this embodiment and some embodiments of the present invention, at least one second flow blocking member 400a may be further included. The second spoiler 400a is disposed in the chamber C and sleeved on the main body portion 210a of the bearing 200a. Specifically, the number of the first spoiler 300a and the number of the second spoiler 400a are both multiple, and the first spoiler 300a and the second spoiler 400a are alternately arranged. In this way, when the composite bearing structure 10a is installed on the shaft that operates at a high speed, the layered structure of the first spoiler 300a and the second spoiler 400a can disperse the vibration from the shaft, thereby dispersing the vibration from the shaft. to achieve shock absorption. Besides, the outer diameter of the second spoiler 400a is smaller than the outer diameter of the first spoiler 300a. That is to say, between the outer edge (not numbered) of the second spoiler 400a and the side wall 110a, and between two adjacent first spoilers 300a, a first small oil-accommodating space is formed sc1, thereby allowing the lubricating oil to stay between the first blocking member 300a, the second blocking member 400a and the side wall 110a for a long time, so as to achieve the effect of reducing the flow degree of the lubricating oil. The composite structure of the flow element 400a and the bearing 200a further makes it difficult for the lubricating oil to leak out from the small gap between the shaft sleeve 100a and the bearing 200a. It should be noted that, in this embodiment and some embodiments of the present invention, one of the second blocking members 400a is preferably disposed adjacent to the side portion 220a. In this way, one of the first small oil-accommodating spaces sc1 will also be adjacent to the side portion 220a, so as to provide a good lubricating effect between the side portion 220a and the second spoiler 400a, but the invention is not limited to this. . In some embodiments, one of the first spoilers can also be disposed adjacent to the side of the bearing.

In this embodiment and some embodiments of the present invention, the first blocking member 300a has at least one first groove 301a, and the second blocking member 400a has at least one second groove 401a. Specifically, the first spoiler 300a has, for example, four square first notches 301a, and the first slits 301a are located at the inner edge (not marked) of the first spoiler 300a, and the second spoiler 301a 400a has, for example, four square second notches 401a, and the second notches 401a are located at the inner edge (not marked) of the second spoiler 400a, but the present invention does not use the first notches 301a and the second notches 401a The number, location or shape of 401a is limited. In some embodiments, the first blocking member may have more than two first notches, and the second blocking member may have more than two second notches. In some embodiments, the first notch can be located on the outer edge of the first spoiler, and the second notch can be located on the outer edge of the second spoiler. In some embodiments, both the first notch and the second notch can be arc-shaped. In this embodiment and some embodiments of the present invention, the first notched groove 301a and the second notched groove 401a are displaced and communicated with each other. In this way, a second small oil-accommodating space sc2 can be formed between the inner wall surface of each of the first groove 301a and the second groove 401a and the main body portion 210a, thereby allowing the lubricating oil to stay in the first blocking flow for an extended period of time. Between the component 300a, the second blocking component 400a and the main body 210a, the effect of reducing the flow of the lubricating oil is achieved, and further, the lubricating oil is not easily leaked from the small gap between the bushing 100a and the bearing 200a. In addition, since the first notch 301a and the second notch 401a can respectively provide a space for the first spoiler 300a and the second spoiler 400a to deform slightly, it is beneficial to connect the first spoiler 300a to the second spoiler 400a. The second blocking member 400a is assembled to the main body portion 210a.

In this embodiment and some embodiments of the present invention, an anti-vibration structure 500a may be further included. The material of the anti-vibration structure 500a may be, for example, a metal material such as copper. The anti-vibration structure 500a is disposed between the seat portion 120a and the main body portion 210a of the bushing 100a. The anti-vibration structure 500a includes a central portion 510a and an outer peripheral portion 520a. The outer peripheral portion 520a surrounds the central portion 510a. The central portion 510a protrudes from the outer peripheral portion 520a, and the central portion 510a has a recess 511a on the side facing the seat portion 120a of the bushing 100a. After the anti-vibration structure 500a is assembled, the recess 511a is surrounded by the central portion 510a, the outer peripheral portion 520a and the seat portion 120a to form a third small oil-accommodating space sc3. The third small oil-accommodating space sc3 can store lubricating oil, so as to reduce the flow of lubricating oil. Further, it is difficult for the lubricating oil to leak out from the small gap between the shaft sleeve 100a and the bearing 200a; in addition, the third small oil-accommodating space sc3 can also prevent the vibration from the shaft center from passing through the center portion 510a of the anti-vibration structure 500a It is directly transmitted to other parts in the bushing 100a.

In this embodiment and some embodiments of the present invention, a gasket 600a may be further included. The spacer 600a is, for example, a wear-resistant sheet, and is disposed between the shock-proof structure 500a and the main body portion 210a in a close and flat contact manner, for example. The spacer 600a has a first side 601a, eg, a straight line, and a second side 602a, eg, an arc. The first side 601a is connected to the second side 602a. The spacer 600a maintains a certain distance from the sidewall 110a at the first side 601a, and the spacer 600a is attached to the sidewall 110a at the second side 602a. In this way, the gasket 600a can divide the chamber C into a first oil storage space C1 and a second oil storage space C2 at the second side 602a, but still maintain the first oil storage space C1 at the first side 601a It communicates with the second oil storage space C2, wherein the first spoiler 300a is located in the first oil storage space C1, and the shockproof structure 500a is located in the second oil storage space C2. By arranging the gasket 600a, the lubricating oil in the second oil storage space C2 may be blocked by the gasket 600a and is not easy to flow to the first oil storage space C1. , The composite structure of the anti-vibration structure 500a, the gasket 600a and the bearing 200a further makes it difficult for the lubricating oil to leak out from the small gap between the shaft sleeve 100a and the bearing 200a.

In the above-mentioned embodiment, the main body portion 210a is sleeved by a plurality of first flow blocking members 300a and second flow blocking members 400a, but the present invention is not limited thereto. See Figures 4 to 5. FIG. 4 is an exploded schematic view of a composite bearing structure 10b according to another embodiment of the present invention. FIG. 5 is a schematic cross-sectional view of the composite bearing structure 10 b of FIG. 4 . The following only describes the differences between another embodiment of the present invention and some of the foregoing embodiments, and other similarities will be omitted. In this embodiment and some embodiments of the present invention, only the first flow blocking member 300b of the helical structure is sleeved on the main body portion 210b. Specifically, the first spoiler 300b is, for example, a coil spring and is located between the side portion 220b and the seat portion 120b. Since the first spoiler 300b has a circular cross-section and a coil (not numbered otherwise) surrounding helically, a plurality of helical channels hxb are formed between the coil and the main body 210b and the coil and the side wall 110b, thereby increasing the lubricating oil. Due to the length of the flow path, the composite structure of the first flow blocking member 300b and the bearing 200b makes it difficult for the lubricating oil to leak out from the small gap between the shaft sleeve 100b and the bearing 200b. It should be noted that, in this embodiment and some embodiments of the present invention, the coil spring of the first spoiler 300b is completely compressed, but the present invention is not limited to this. In some embodiments, the coil spring of the first spoiler may not be fully compressed, and a larger helical channel may be formed to increase the space of the flow channel. Alternatively, in other partial embodiments, the first flow blocking member may also be other non-elastic helical structures such as a helical columnar body.

In the above-mentioned embodiments, the chambers are closed by the seat portions 120a, 120b and the side portions 220a, 220b, but the present invention is not limited thereto. See Figures 6 to 8. FIG. 6 is a schematic perspective view of a composite bearing structure 10c according to yet another embodiment of the present invention. FIG. 7 is an exploded schematic view of the composite bearing structure 10 c of FIG. 6 . FIG. 8 is a schematic cross-sectional view of the composite bearing structure 10 c of FIG. 6 . Only the differences between another embodiment of the present invention and some of the foregoing embodiments will be described below, and other similarities will be omitted. In this embodiment and some embodiments of the present invention, the shaft sleeve 100c only includes one side wall 110c. The side wall 110c surrounds the accommodating space 101c. The number of the bearings 200c is two, and the respective shaft holes 201c of the bearings 200c communicate with each other. Each of the bearings 200c includes a main body portion 210c and a side portion 220c. The two main portions 210c are disposed between the two side portions 220c. The side portion 220c is tightly fitted to the side wall 110c of the shaft sleeve 100c. The lubricating oil in the chamber C can not easily leak out from the small gap (not shown in the figure) between the shaft sleeve 100c and the bearing 200c through the tightly fitted side walls 110c and the side parts 220c; After the oil is heated and vaporized, it is not easy for the oil to escape from the small gap between the shaft sleeve 100c and the bearing 200c.

Similarly, in the above-mentioned embodiment, the main body portion 210c is sleeved by a plurality of first flow blocking members 300c and second flow blocking members 400c, but the present invention is not limited thereto. See Figures 9 to 10. FIG. 9 is an exploded schematic view of a composite bearing structure 10d according to yet another embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of the composite bearing structure 10d of FIG. 9 . The following only describes the differences between another embodiment of the present invention and the aforementioned embodiments in FIGS. 6 to 8 , and other similarities will be omitted. In this embodiment and some embodiments of the present invention, only the first flow blocking member 300d of the helical structure is sleeved on the main body portion 210d. Specifically, the first spoiler 300d is, for example, a coil spring and is located between the two side portions 220d. Since the first spoiler 300d has a circular cross-section and a coil (not numbered otherwise) surrounded by a spiral, a plurality of spiral channels hxd are formed between the coil and the main body 210d and the coil and the side wall 110d, thereby increasing the lubricating oil. The flow path, through the composite structure of the first flow blocking member 300d and the bearing 200d, makes it difficult for the lubricating oil to leak out from the small gap between the shaft sleeve 100d and the bearing 200d. It should be noted that, in this embodiment and some embodiments of the present invention, the coil spring of the first spoiler 300d is completely compressed, but the present invention is not limited thereto. In some embodiments, the coil spring of the first spoiler may not be fully compressed, and a larger helical channel may be formed to increase the space of the flow channel. Alternatively, in other partial embodiments, the first flow blocking member may also be other non-elastic helical structures such as a helical columnar body.

In the above embodiments of FIGS. 1 to 3 , the first blocking member 300a is circular at the outer edge and has four square first notches 301a at the inner edge, and the second blocking member 400a is inside There are four square second notches 401a at the edge, but the invention is not limited to this. Please refer to Figure 11 and Figure 12. FIG. 11 is an exploded schematic view of a composite bearing structure 10e according to yet another embodiment of the present invention. FIG. 12 is a schematic cross-sectional view of the composite bearing structure 10e of FIG. 11 . The following only describes the differences between still another embodiment of the present invention and the aforementioned embodiments in FIG. 6 to FIG. 8 , and other similarities will be omitted. In this embodiment and some embodiments of the present invention, the first spoiler 300e has, for example, three arc-shaped first notches 301e, and the second spoiler 400e has, for example, three arc-shaped second grooves 301e. The groove 401e is missing. In addition, the first spoiler 300e has a first edge 310e such as a straight line and a second edge 320e such as an arc at the outer edge. The first side 310e is connected to the second side 320e. The first side 310e and the first cutout 301e are displaced in the radial direction of the first spoiler 300e; that is, the first cutout 301e faces away from the second side 320e. The shortest distance from the first side 310e to the center point (not numbered otherwise) of the first spoiler 300e is smaller than the shortest distance from the second side 320e to the center point of the first spoiler 300e. The first spoiler 300e maintains a certain distance from the sidewall 110e at the first side 310e, and the first spoiler 300e is attached to the sidewall 110e at the second side 320e. In this way, the first small oil-accommodating spaces sc1 can still maintain a certain degree of connectivity at the first side 310e. Similarly, in the embodiment of FIGS. 6 to 8 , the first flow blocking member 300 c can be changed to be the first flow blocking member 300 e of the embodiment of FIGS. 11 to 12 to become yet another embodiment, which is not described here To repeat.

According to the composite bearing structure disclosed in the above embodiments, the first flow blocking member is disposed in the chamber and sleeved on the bearing. In this way, the first choke element can effectively increase the length of the flow path of the lubricating oil in the chamber, and through the composite structure of the first choke element and the bearing, the lubricating oil cannot easily escape from the small gap between the bushing and the bearing. leaked out.

In some embodiments, the side portion is tightly fitted to the side wall of the bushing. The lubricating oil in the chamber can not easily leak out from the small gap between the bushing and the bearing due to the tightly fitted side walls and side parts; in addition, when the lubricating oil is heated and vaporized, it is not easy to connect the bushing and the bearing. The tiny gap between them escapes.

In some embodiments, the first spoiler and the second spoiler are arranged alternately with each other. In this way, when the composite bearing structure is installed on the axis of high-speed operation, the layered structure of the first choke element and the second choke element can disperse the vibration from the axle center, so as to achieve shock absorption. Effect.

In some embodiments, the outer diameter of the second spoiler is smaller than the outer diameter of the first spoiler, so as to form a first small oil-accommodating space, thereby allowing the lubricating oil to stay in the first spoiler and the second spoiler for an extended period of time. Between the flow piece and the side wall, the effect of reducing the flow of lubricating oil is achieved. Through the composite structure of the first choke piece, the second choke piece and the bearing, it is further difficult for the lubricating oil to escape from the tiny gap between the bushing and the bearing. The gap leaked out.

In some embodiments, the first groove and the second groove are displaced. In this way, a second small oil-accommodating space can be formed between the inner wall surface of each of the first groove and the second groove and the main body, so that the lubricating oil can stay in the first blocking member and the second blocking member for an extended period of time. Between the flow piece and the main body, the effect of reducing the flow of the lubricating oil is achieved, and the lubricating oil is further prevented from leaking out from the small gap between the shaft sleeve and the bearing.

In some embodiments, an anti-vibration structure may be further included. After the anti-vibration structure is assembled, the recess is surrounded by the central portion, the outer peripheral portion and the seat portion to form a third small oil-accommodating space. The third small oil-accommodating space can store lubricating oil to reduce the flow of lubricating oil. Through the composite structure of the first choke element, the second choke element, the shock-proof structure and the bearing, the lubricating oil can be further reduced. It is not easy to leak out from the small gap between the shaft sleeve and the bearing; in addition, the third small oil storage space can prevent the vibration from the shaft center from being directly transmitted to other parts in the shaft sleeve through the central part of the anti-vibration structure.

In some embodiments, spacers may be included. By arranging the gasket, the lubricating oil in the second oil storage space may be blocked by the gasket and cannot easily flow to the first oil storage space. The composite structure with the bearing further makes it difficult for the lubricating oil to leak out from the small gap between the bushing and the bearing.

In some embodiments, the first flow blocking member is a coil with a circular cross-section and is surrounded by a spiral, and a plurality of spiral channels are formed between the coil and the main body and between the coil and the side wall, thereby increasing the flow path length of the lubricating oil , Through the composite structure of the first spoiler and the bearing, the lubricating oil is not easy to leak out from the small gap between the shaft sleeve and the bearing.

In some embodiments, the first baffle has a first edge and a second edge at the outer edge. The first side is connected to the second side. The first side and the first notch are displaced in the radial direction of the first spoiler. The shortest distance from the first side to the center point of the first spoiler is smaller than the shortest distance from the second side to the center point of the first spoiler. The first spoiler is kept at a certain distance from the sidewall at the first side, and the first spoiler is attached to the sidewall at the second side. In this way, the first small oil-accommodating spaces can still maintain a certain degree of connectivity at the first side.

Claims (8)

1. A composite bearing structure for accommodating a shaft, wherein the composite bearing structure comprises: a shaft sleeve with an accommodating space; A bearing is arranged in the accommodating space of the shaft sleeve, the bearing has a shaft hole, the shaft hole is used for accommodating the shaft center, the bearing and the shaft sleeve form a cavity, and the cavity communicates with the shaft hole ; a first blocker, disposed in the chamber and sleeved with the bearing; and A second flow blocking member is disposed in the chamber and sleeved on a main body portion of the bearing, and the outer diameter of the second flow blocking member is smaller than the outer diameter of the first flow blocking member. 2 . The composite bearing structure of claim 1 , wherein the number of the bearings is two, the two shaft holes of the two bearings are communicated with each other, the two bearings respectively comprise the main body part and a side part, the Two main body parts are arranged between the two side parts, the two side parts are tightly fitted on the shaft sleeve, and the first flow blocking piece and the second flow blocking piece are sleeved on the main body part of the bearing. 3 . The composite bearing structure of claim 1 , wherein the bearing comprises the main body portion and a side portion, the side portion is disposed at one end of the main body portion, and the main body portion is located between the shaft sleeve and the side portion. 4 . Between the parts, the side part is tightly fitted on the shaft sleeve, and the first blocking member and the second blocking member are sleeved on the main body portion of the bearing. 4 . The composite bearing structure of claim 1 , wherein the first spoiler has at least one first groove, the second spoiler has at least one second groove, and the at least one first A notch is displaced from the at least one second notch. 5 . The composite bearing structure of claim 4 , wherein the at least one first notch is located on the inner edge of the first spoiler, and the at least one second notch is located on the second spoiler. 6 . the inner edge. 6 . The composite bearing structure of claim 3 , further comprising an anti-vibration structure, wherein the anti-vibration structure is disposed between the shaft sleeve and the main body portion, and the anti-vibration structure comprises a central portion and an outer periphery. 7 . The outer peripheral portion surrounds the central portion, the central portion protrudes from the outer peripheral portion, and the side of the central portion facing the bushing has a depression. 7 . The composite bearing structure of claim 1 , wherein the first baffle has a first side and a second side at the outer edge, the first side is connected to the second side, the The shortest distance from the first side to a center point of the first spoiler is smaller than the shortest distance from the second side to the center point of the first spoiler. 8 . The composite bearing structure of claim 1 , wherein the bushing comprises a side wall and a seat portion, the side wall standing on the seat portion and surrounding the accommodating space. 9 .

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