TWM588183U - Dynamic bearing structure - Google Patents

Abstract

A dynamic pressure bearing structure includes a bearing body, a rotating shaft hole, a plurality of oil guiding grooves, a first identification flange and a second identification flange. The shaft holes are disposed at the center of the bearing body. The oil guide grooves are provided on the inner wall of the shaft holes. The oil guide grooves are V-shaped. The oil guide grooves have a groove direction. The first identification flange is disposed at one end of the bearing body, the second identification flange is disposed on the first identification flange, and the first identification flange and the second identification flange are used to identify the groove direction to facilitate assembly.

Description

Dynamic pressure bearing structure

This creation relates to a dynamic pressure bearing structure, in particular to a bearing structure in which a pressure field is generated due to a change in flow velocity through a fluid passing between a bearing and a rotating shaft, so that the rotating shaft can stably rotate without contacting the bearing.

Generally, a dynamic pressure bearing is provided with an oil guide groove on the inner surface of the bearing body or the outer surface of the rotating shaft. When the lubricating fluid flows between the rotating shaft and the bearing body, pressure can be concentratedly formed, and the rotating shaft is rotated by the support force of the oil film. When it does not touch the inner wall of the shaft hole, it can avoid the shaft and the bearing body colliding with each other and abrasion, thereby reducing the generation of noise and vibration, which has become a bearing technology commonly used in today's information products. However, the existing dynamic pressure bearing is non-identifiable, and it is difficult to identify whether the direction of the oil guide groove is a forward direction (clockwise direction) or a reverse direction (counterclockwise direction), so it is not easy to assemble.

The technical problem to be solved in this creation is to provide a dynamic pressure bearing structure for the shortcomings of the prior art, which can easily identify the direction of the oil guide groove to facilitate assembly.

In order to solve the above technical problems, the present invention provides a dynamic pressure bearing structure, including: a bearing body, the two ends of the bearing body forming a first end and a second end respectively; a shaft hole, the shaft hole is provided in the The center of the bearing body, the shaft hole penetrates to the first end and the second end of the bearing body; a plurality of oil guide grooves, the oil guide grooves are arranged on the inner wall of the shaft hole, the oil guide grooves It is V-shaped, the oil guide grooves have a groove direction; a first identification flange is disposed at the second end of the bearing body, and the outer diameter of the first identification flange is smaller than the outer diameter of the first identification flange; An outer diameter of the bearing body, the first identification flange is protruded on the second end of the bearing body; and a second identification flange, the second identification flange is disposed on the first identification flange, the first identification flange The outer diameter of the two identification flanges is smaller than the outer diameter of the first identification flange. The second identification flange is protruded on the first identification flange. The first identification flange and the second identification flange are used for Identify the groove direction.

In order to solve the above technical problems, the present invention also provides a dynamic pressure bearing structure, including: a bearing body, the two ends of the bearing body forming a first end and a second end, respectively; a shaft hole, the shaft hole is provided in In the center of the bearing body, the rotating shaft hole penetrates to the first end and the second end of the bearing body; a plurality of oil guiding grooves are provided on the inner wall of the rotating shaft hole, and the oil guiding grooves The grooves are V-shaped, and the oil guiding grooves have a groove direction; a first identification flange is provided at the second end of the bearing body, and the outer diameter of the first identification flange is smaller than The outer diameter of the bearing body, the first identification flange is protruded on the second end of the bearing body; and at least one identification groove, the identification groove is concavely recessed on the outer wall of the bearing body, and the first An identification flange and the identification groove are used to identify the direction of the groove.

In order to solve the above technical problems, the present invention provides a dynamic pressure bearing structure, including: a bearing body, two ends of the bearing body forming a first end and a second end, respectively; a shaft hole, the shaft hole is provided in In the center of the bearing body, the rotating shaft hole penetrates to the first end and the second end of the bearing body; a plurality of oil guiding grooves are provided on the inner wall of the rotating shaft hole, and the oil guiding grooves The grooves are V-shaped, the oil guiding grooves have a groove direction, and a first identification flange is provided at the second end of the bearing body, and the outer diameter of the first identification flange is The first identification flange is smaller than the outer diameter of the bearing body, and is protruded on the second end of the bearing body. The first identification flange is used to identify the groove direction.

The beneficial effect of this creation is that the dynamic pressure bearing structure provided by this creation is provided with a first identification flange and a second identification flange at the second end of the bearing body, and the first identification flange and the second identification protrusion can be used. The direction of the oil guide grooves (clockwise direction and counterclockwise direction) is identified to facilitate assembly and avoid the problem of reverse installation.

Furthermore, due to the arrangement of the first identification flange, the second end of the bearing body can also form a fixing surface, which can be used for pressing to fix the dynamic pressure bearing structure.

In order to better understand the features and technical contents of this creation, please refer to the following detailed description and drawings about this creation. However, the drawings provided are only for reference and explanation, and are not intended to limit this creation.

The following are specific implementation examples to explain the implementation of the present disclosure. Those skilled in the art can understand the advantages and effects of the present disclosure from the content disclosed in this specification. This creation can be implemented or applied through other different specific embodiments, and various details in this specification can also be based on different viewpoints and applications, and various modifications and changes can be made without departing from the concept of this creation. In addition, the drawings of this creation are only for simple and schematic illustrations, and are not drawn in actual size, so stated in advance. The following embodiments will further describe the technical content of this creation in detail, but the disclosed content is not intended to limit the scope of protection of this creation.

[First embodiment]

Please refer to FIG. 1, the present invention provides a dynamic pressure bearing structure including a bearing body 1, a shaft hole 2, a plurality of oil guide grooves 3, a first identification flange 4 and a second identification flange 5.

The bearing body 1 is a hollow cylinder, and the outer wall of the bearing body 1 can be changed in equal diameter or unequal diameter. A first end 11 and a second end 12 are respectively formed at two ends of the bearing body 1. As disclosed in FIG. 1, the first end 11 and the second end 12 are located at the lower end and the upper end of the bearing body 1, respectively.

The rotating shaft hole 2 is disposed at the center of the bearing body 1. The rotating shaft hole 2 is a circular hole. The rotating shaft hole 2 penetrates to the first end 11 and the second end 12 of the bearing body 1 so as to cooperate with the rotating shaft.

The oil guide grooves 3 are disposed on the inner wall of the shaft hole 2. The oil guide grooves 3 are V-shaped, that is, the oil guide grooves 3 are herringbone. The oil guide grooves 3 can also be Set for equally spaced arrangements. The oil guiding grooves 3 can be used to guide the lubricating fluid, so that the lubricating fluid flows between the rotating shaft and the bearing body 1 and form a concentrated pressure. The supporting force of the oil film prevents the rotating shaft from contacting the rotating shaft hole 2 when it rotates. The inner wall can avoid abrasion between the rotating shaft and the bearing body 1, thereby reducing noise and vibration.

The first identification flange 4 is disposed on the second end 12 of the bearing body 1. The first identification flange 4 may be integrally formed on the second end 12 of the bearing body 1. The outer diameter of the first identification flange 4 D2 is smaller than the outer diameter D1 of the bearing body 1, so that the first identification flange 4 is protruded on the second end 12 of the bearing body 1, so that the two ends of the dynamic pressure bearing structure are formed into different structures, so that To the recognition effect, so as to identify the directions of the oil guide grooves 3.

Specifically, the oil guiding grooves 3 have a groove direction A. The groove direction A may be a clockwise direction (forward direction) or a counterclockwise direction (reverse direction). The first identification flange 4 is used for identification. The groove direction A, that is, the first identification flange 4 can be used to identify the directions of the oil guide grooves 3, so that the effect of identifying the directions of the oil guide grooves 3 can be achieved.

In addition, because the first identification flange 4 is provided, the second end 12 of the bearing body 1 can also form a fixing surface, which can be used to press-fix the dynamic pressure bearing structure. As shown in FIG. 2, the dynamic pressure bearing structure can be installed in a housing 6, a rotating shaft 7 penetrates through the rotating shaft hole 2, and a pressure ring 8 can be provided on the top of the housing 6, and the pressure ring 8 can be pressed on the bearing. On the second end 12 (fixing surface) of the main body 1, the dynamic pressure bearing structure is pressed and fixed in the casing 6 by the pressure ring 8.

The second identification flange 5 is disposed on the first identification flange 4. The second identification flange 5 may be integrally formed on the first identification flange 4. The outer diameter D3 of the second identification flange 5 is smaller than The outer diameter D2 of the first identification flange 4 allows the second identification flange 5 to protrude from the first identification flange 4. The second identification flange 5 has the same function as the first identification flange 4 and can play a role The effect of recognition. The second identification flange 5 can assist the first identification flange 4, and the second identification flange 5 can also be used to identify the groove direction A and to identify the directions of the oil guide grooves 3 to facilitate assembly. The second identification flange 5 is protruded on the first identification flange 4, which is more eye-catching and can have better identification effect.

[Second embodiment]

Referring to FIG. 3, the structure of this embodiment is substantially the same as that of the first embodiment. The main difference is that the second identification flange 5 in the first embodiment is deleted, that is, this embodiment only A first identification flange 4 is provided, and the first identification flange 4 can be used to identify the groove direction A and to identify the directions of the oil guide grooves 3.

[Third embodiment]

Please refer to FIG. 4. The structure of this embodiment is substantially the same as that of the second embodiment. The main difference is that in this embodiment, at least one identification groove 9 is further provided on the outer wall of the bearing body 1. The identification groove 9 The identification groove 9 is located between the first end 11 and the second end 12 of the bearing body 1. The identification groove 9 is annularly recessed on the outer wall of the bearing body 1. The cross section of the identification groove 9 may be V-shaped, U-shaped, or The square shape and the like do not limit the cross-sectional shape of the identification groove 9. In this embodiment, the cross-section of the identification groove 9 has a square shape. The identification groove 9 can assist the first identification flange 4. The identification groove 9 can also be used to identify the groove direction A and to identify the directions of the oil guide grooves 3 to facilitate assembly.

[Beneficial effects of this creation]

The beneficial effect of this creation is that the dynamic pressure bearing structure of this creation is provided with a first identification flange and a second identification flange at the second end of the bearing body, and the first identification flange and the second identification flange can be used to identify the The direction of these oil guide grooves (clockwise direction, counterclockwise direction) to facilitate assembly, and the problem of reverse installation will not occur.

Furthermore, due to the arrangement of the first identification flange, the second end of the bearing body can also form a fixing surface, which can be used for pressing to fix the dynamic pressure bearing structure.

The content disclosed above is only the preferred and feasible embodiment of this creation, and therefore does not limit the scope of the patent application for this creation. Therefore, any equivalent technical changes made using this creation specification and diagram content are included in this creation application Within the scope of the patent.

1‧‧‧bearing body
11‧‧‧ the first end
12‧‧‧ the second end
2‧‧‧ shaft hole
3‧‧‧oil guide groove
4‧‧‧First identification flange
5‧‧‧Second identification flange
6‧‧‧ shell
7‧‧‧ shaft
8‧‧‧ pressure ring
9‧‧‧Identification groove
A‧‧‧Trench direction
D1‧‧‧ Outside diameter
D2‧‧‧ Outside diameter
D3‧‧‧ Outside diameter

FIG. 1 is a cross-sectional view of a dynamic pressure bearing structure according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a use state of a dynamic pressure bearing structure according to the first embodiment of the present invention.

3 is a cross-sectional view of a dynamic pressure bearing structure according to a second embodiment of the present invention.

4 is a cross-sectional view of a dynamic pressure bearing structure according to a third embodiment of the present invention.

Claims (9)

A dynamic pressure bearing structure includes:
A bearing body, the two ends of which form a first end and a second end respectively;
A shaft hole, which is arranged at the center of the bearing body;
A plurality of oil guide grooves, the oil guide grooves are disposed on the inner wall of the shaft hole, the oil guide grooves are V-shaped, and the oil guide grooves have a groove direction;
A first identification flange is disposed at the second end of the bearing body, an outer diameter of the first identification flange is smaller than an outer diameter of the bearing body, and the first identification flange is protruded from the bearing body. The second end of the bearing body; and a second identification flange, the second identification flange is disposed on the first identification flange, and the outer diameter of the second identification flange is smaller than the outer diameter of the first identification flange Diameter, the second identification flange is protruded on the first identification flange, and the first identification flange and the second identification flange are used to identify the groove direction. The dynamic pressure bearing structure according to item 1 of the patent application scope, wherein the groove direction is clockwise. The dynamic pressure bearing structure according to item 1 of the patent application scope, wherein the second end of the bearing body forms a fixed surface. A dynamic pressure bearing structure includes:
A bearing body, the two ends of which form a first end and a second end respectively;
A shaft hole, which is arranged at the center of the bearing body, and the shaft hole penetrates to the first end and the second end of the bearing body;
A plurality of oil guide grooves, the oil guide grooves are disposed on the inner wall of the shaft hole, the oil guide grooves are V-shaped, and the oil guide grooves have a groove direction;
A first identification flange is disposed at the second end of the bearing body, an outer diameter of the first identification flange is smaller than an outer diameter of the bearing body, and the first identification flange is protruded from the bearing body. The second end of the bearing body; and at least one identification groove, the identification groove is annularly recessed on the outer wall of the bearing body, and the first identification flange and the identification groove are used to identify the direction of the groove. The dynamic pressure bearing structure according to item 4 of the scope of patent application, wherein the groove direction is clockwise. The dynamic pressure bearing structure according to item 4 of the patent application scope, wherein the second end of the bearing body forms a fixed surface. A dynamic pressure bearing structure includes:
A bearing body, the two ends of which form a first end and a second end respectively;
A shaft hole, which is arranged at the center of the bearing body, and the shaft hole penetrates to the first end and the second end of the bearing body;
A plurality of oil guide grooves, the oil guide grooves are disposed on the inner wall of the shaft hole, the oil guide grooves are V-shaped, the oil guide grooves have a groove direction, and a first identification protrusion Edge, the first identification flange is disposed at the second end of the bearing body, the outer diameter of the first identification flange is smaller than the outer diameter of the bearing body, and the first identification flange is protruded at the second end of the bearing body On the end, the first identification flange is used to identify the groove direction. The dynamic pressure bearing structure according to item 7 of the scope of patent application, wherein the groove direction is clockwise. The dynamic pressure bearing structure according to item 7 of the patent application scope, wherein the second end of the bearing body forms a fixed surface.