TWM582541U - Non-directional dynamic bearing structure - Google Patents

Abstract

The present invention is a non-directional dynamic pressure bearing structure comprising a bearing body, a shaft hole and at least one oil guiding groove group. The oil guiding groove group is disposed on the inner wall of the rotating shaft hole, and the oil guiding groove group includes at least a plurality of first grooves, a plurality of second grooves and a plurality of third grooves. The second trenches are respectively connected between the first trenches and the third trenches, and one ends of the first trenches respectively have a first sharp point and one end of the second trenches The other ends of the second trenches are respectively connected to one ends of the third trenches by a second sharp point, and the first sharp points and the second sharp points are opposite directions. Thereby, the assembly of the dynamic pressure bearing structure can be made non-directional, and the assembly cost can be reduced.

Description

Non-directional dynamic pressure bearing structure

The present invention relates to a non-directional dynamic pressure bearing structure, and more particularly to a bearing structure that generates a pressure field between a rotating shaft and a rotating shaft through a fluid, so that the rotating shaft can stably rotate and is not in contact with the bearing.

The general dynamic pressure bearing is provided with an oil guiding groove on the inner wall of the bearing body or the outer wall of the rotating shaft. When the lubricating fluid flows between the rotating shaft and the bearing body, pressure can be concentratedly formed, and the supporting force of the oil film makes the rotating shaft rotate. It does not touch the shaft hole, so it can avoid the collision between the shaft and the bearing body and wear, thus reducing the noise and vibration, which has become the bearing technology commonly used in today's information products. However, the existing dynamic pressure bearing has directionality (forward and reverse) when assembled, and thus is inconvenient to assemble, resulting in high assembly cost.

The technical problem to be solved by the present invention is to provide a non-directional dynamic pressure bearing structure for the deficiencies of the prior art, and the assembly has no directionality, which can reduce the assembly cost.

In order to solve the above technical problem, the present invention provides a non-directional dynamic pressure bearing structure, comprising: a bearing body having a first end and a second end; a rotating shaft hole, the rotating shaft hole is disposed on the bearing a center of the body, the shaft hole penetrates to the first end and the second end of the bearing body; and at least one oil guiding groove group, the oil guiding groove group is disposed on an inner wall of the rotating shaft hole, the oil guiding groove The group includes at least a plurality of first trenches, a plurality of second trenches, and a plurality of third trenches, the first trenches being disposed in parallel and spaced apart from each other, the second trenches being disposed in parallel and spaced apart from each other, The third trenches are disposed in parallel and spaced apart from each other, and the second trenches are respectively connected between the first trenches and the third trenches, and one ends of the first trenches are respectively a cusp is connected to one end of the second trenches, and the first trenches are respectively V-shaped connected to the second trenches, and the first trenches and the seconds are connected to each of the first trenches Forming a first angle between the grooves, and the other ends of the second grooves are respectively a second point Connecting with one end of the third trenches, the second trenches are respectively V-connected to the third trenches, and a second trench and a third trench are formed between each of the connected trenches a second angle, the first cusp and the second cusps are in opposite directions.

In order to solve the above technical problem, the present invention also provides a non-directional dynamic pressure bearing structure, comprising: a bearing body, the bearing body has a first end and a second end; a rotating shaft hole, the rotating shaft hole is disposed in the a center of the bearing body, the shaft hole penetrates to the first end and the second end of the bearing body, an inner wall of the shaft hole is provided with an oil storage groove; and two oil guiding groove groups, the two oil guiding groove groups are arranged The two oil guiding groove groups are respectively adjacent to the first end and the second end of the bearing body on the inner wall of the rotating shaft hole, and the oil storage groove is located between the two oil guiding groove groups, each oil guiding groove The group includes at least a plurality of first trenches, a plurality of second trenches, and a plurality of third trenches, the first trenches being disposed in parallel and spaced apart from each other, the second trenches being disposed in parallel and spaced apart from each other, The third trenches are disposed in parallel and spaced apart from each other, and the second trenches are respectively connected between the first trenches and the third trenches, and one ends of the first trenches are respectively a cusp is connected to one ends of the second trenches, and the first trenches are respectively associated with the The second trench is connected in a V-shape, a first angle is formed between the first trench and the second trench connected to each other, and the other end of the second trench is respectively a second sharp point Connecting with one end of the third trenches, the second trenches are respectively V-connected to the third trenches, and a second trench and a third trench are formed between each of the connected trenches a second angle, the first cusp and the second cusps are in opposite directions.

The beneficial effect of the present invention is that the oil guiding groove group of the present invention comprises at least a plurality of first grooves, a plurality of second grooves and a plurality of third grooves, each of which is connected to the first groove and the second The trench and the third trench may form a plurality of bent structures, and one ends of the first trenches are respectively connected to one ends of the second trenches by a first sharp point, and the other of the second trenches One end is connected to one end of the third trenches by a second sharp point, and the first sharp points and the second sharp points are opposite directions. Therefore, the dynamic pressure bearing structure of the present invention has V-shaped grooves facing different directions, and can be used in both directions, so that the assembly of the dynamic pressure bearing structure can be made non-directional, and the assembly cost can be reduced.

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

The embodiments disclosed in the present disclosure are described below by way of specific embodiments, and those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in the present specification. The present invention can be implemented or applied in various other specific embodiments. The details of the present specification can also be variously modified and changed without departing from the concept of the present invention. In addition, the drawings of the present creation are only for the purpose of simple illustration, and are not stated in advance according to the actual size. The following embodiments will further explain the related technical content of the present invention, but the disclosure is not intended to limit the scope of protection of the present invention.

[First Embodiment]

Referring to FIG. 1 to FIG. 4, the present invention provides a non-directional dynamic pressure bearing structure, comprising a bearing body 1, a shaft hole 2 and at least one oil guiding groove group 3.

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. In the embodiment, the outer wall of the bearing body 1 has an unequal diameter. The bearing body 1 has a first end 11 and a second end 12, and the first end 11 and the second end 12 are respectively located at opposite ends of the bearing body 1.

The shaft hole 2 is disposed at the center of the bearing body 1. The shaft hole 2 is a circular hole. The shaft hole 2 extends through the first end 11 and the second end 12 of the bearing body 1 to cooperate with the rotating shaft. The diameter D of the shaft hole 2 is preferably from 1 to 3 mm.

The oil guiding groove group 3 is disposed on the inner wall of the rotating shaft hole 2. The oil guiding groove group 3 is provided at least one, and preferably two oil guiding groove groups 3 are provided. This embodiment discloses that two oil guiding grooves are provided. The groove group 3, the two oil guiding groove groups 3 are respectively adjacent to the first end 11 and the second end 12 of the bearing body 1, and an inner wall of the rotating shaft hole 2 is provided with an oil storage groove 21, and the length of the oil storage groove 21 It is not limited and can be changed as needed. The oil storage groove 21 is located between the two oil guiding groove groups 3, and can provide an oil storage function.

Each of the oil guiding groove groups 3 includes at least a plurality of first grooves 31, a plurality of second grooves 32, and a plurality of third grooves 33. The first trenches 31 are disposed parallel to each other and spaced apart from each other. The second trenches 32 are disposed parallel to each other and spaced apart from each other, and the third trenches 33 are disposed in parallel and spaced apart from each other. Preferably, the first trenches 31 are parallel to the third trenches 33, respectively. The length L of the oil guiding groove group 3 is preferably 1.5 mm or more, but is not limited. The length L of the oil guiding groove group 3 means the length along the axial direction of the dynamic pressure bearing structure. In another embodiment of the present invention, each of the oil guiding groove groups 3 may further include a plurality of fourth grooves, or further include a plurality of fourth grooves, fifth grooves, and the like.

The second trenches 32 are respectively connected between the first trenches 31 and the third trenches 33, such that the first trenches 31, the second trenches 32 and the third trenches are connected to each other. 33 forms a plurality of bent structures. One end of each of the first trenches 31 is connected to one end of the second trenches 32, and the first trenches 31 and the second trenches 32 are respectively V-shaped. Connected. The first cusp 34 has a pointed shape and is connected between the first trench 31 and the second trench 32. A first angle θ1 is formed between each of the first trenches 31 and the second trenches 32. Preferably, the first angle θ1 is between 10 degrees and 50 degrees. The first cusps 34 are 34 degrees. Provides support power.

The other ends of the second trenches 32 are connected to one ends of the third trenches 33 by a second cusp 35, and the second trenches 32 are respectively V with the third trenches 33. The type is connected, and the second pointed point 35 is pointed and connected between the second groove 32 and the third groove 33. A second angle θ2 is formed between each of the second groove 32 and the third groove 33 connected to each other. The angle of the second angle θ2 is preferably between 10 degrees and 50 degrees. The second points 35 Provides support power. The angles of the first angle θ1 and the second angle θ2 may be the same or different, and the first cusp 34 and the second cusps 35 face in opposite directions.

The oil guiding groove group 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 concentrates pressure. The supporting force of the oil film makes the rotating shaft not contact the rotating shaft hole 2 when rotating. Therefore, it is possible to prevent the rotating shaft from colliding with the bearing body 1 to wear, thereby reducing noise and vibration.

[Second embodiment]

Referring to FIG. 5, the embodiment is substantially the same as the first embodiment described above, except that in the embodiment, each of the oil guiding groove groups 3 includes a plurality of first trenches 31 and a plurality of second trenches. 32. A plurality of third trenches 33 and a plurality of fourth trenches 36 are disposed in parallel and spaced apart from each other, and one ends of the fourth trenches 36 are respectively connected to the third trenches At the other end of the 33, the first trench 31, the second trench 32, the third trench 33, and the fourth trench 36 connected to each phase are formed into a plurality of bent structures. One end of the fourth trenches 36 is connected to the other ends of the third trenches 33 by a third cusp 37, and the third trenches 33 are respectively V with the fourth trenches 36. The type is connected, a third angle θ3 is formed between the third groove 33 and the fourth groove 36, and a preferred third angle θ3 is between 10 degrees and 50 degrees, and the second cusp 35 The third sharp points 37 face in opposite directions, and the first sharp points 34 and the third sharp points 37 face in the same direction.

[Third embodiment]

Referring to FIG. 6 , in the embodiment, only one oil guiding groove group 3 is disposed, and the oil guiding groove group 3 is adjacent to the first end 11 and the second end 12 of the bearing body 1 .

[Advantageous Effects of Embodiments]

The beneficial effect of the present invention is that the oil guiding groove group of the present invention comprises at least a plurality of first grooves, a plurality of second grooves and a plurality of third grooves, each of which is connected to the first groove and the second The trench and the third trench may form a plurality of bent structures, and one ends of the first trenches are respectively connected to one ends of the second trenches by a first sharp point, and the other of the second trenches One end is connected to one end of the third trenches by a second sharp point, and the first sharp points and the second sharp points are opposite directions. Therefore, the dynamic pressure bearing structure of the present invention has V-shaped grooves facing different directions, and can be used in both directions, so that the assembly of the dynamic pressure bearing structure can be made non-directional, and the assembly cost can be reduced.

The above disclosure is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention. Therefore, any equivalent technical changes made by using the present specification and the content of the schema are included in the application for this creation. Within the scope of the patent.

1‧‧‧ bearing body

11‧‧‧ first end

12‧‧‧ second end

2‧‧‧ shaft hole

21‧‧‧ oil storage ditch

3‧‧‧ Oil guide groove group

31‧‧‧First trench

32‧‧‧Second trench

33‧‧‧ third trench

34‧‧‧ First cusp

35‧‧‧second cusp

36‧‧‧fourth trench

37‧‧‧ Third cusp

D‧‧‧diameter of the shaft hole

L‧‧‧ Length of the oil guiding groove group

Θ1‧‧‧ first angle

Θ2‧‧‧second angle

Θ3‧‧‧ third angle

Fig. 1 is a perspective view showing the structure of a dynamic pressure bearing of the first embodiment of the present invention.

Figure 2 is a front elevational view showing the structure of the dynamic pressure bearing of the first embodiment of the present invention.

Fig. 3 is a sectional view taken along line III-III of Fig. 2;

Fig. 4 is a development view of the oil guiding groove group of the first embodiment of the present invention.

Figure 5 is a cross-sectional view showing the structure of a dynamic pressure bearing of a second embodiment of the present invention.

Figure 6 is a cross-sectional view showing the structure of a dynamic pressure bearing of a third embodiment of the present invention.

Claims (10)

A non-directional dynamic pressure bearing structure includes: a bearing body having a first end and a second end; a rotating shaft hole, the rotating shaft hole is disposed at a center of the bearing body, and the rotating shaft hole penetrates to the a first end and a second end of the bearing body; and at least one oil guiding groove group, the oil guiding groove group is disposed on an inner wall of the rotating shaft hole, the oil guiding groove group includes at least a plurality of first grooves, a plurality of second trenches and a plurality of third trenches disposed parallel to each other and spaced apart from each other, the second trenches being disposed in parallel and spaced apart from each other, the third trenches being parallel and spaced apart from each other The second trench is respectively connected between the first trench and the third trenches, and the first trench has a first cusp and the second trench respectively One end of each of the first trenches is connected to the second trenches in a V-shape, and a first angle is formed between the first trenches and the second trenches connected to each other. The other ends of the second trenches are respectively connected to one ends of the third trenches by a second sharp point, so that the other end The second trenches are respectively connected to the third trenches in a V-shape, and a second angle is formed between each of the connected second trenches and the third trenches, the first sharp points and the plurality of trenches The second cusp points in the opposite direction. The non-directional dynamic pressure bearing structure according to claim 1, wherein the shaft hole has a diameter of 1 to 3 mm, and the length of the oil guiding groove group is 1.5 mm or more. The non-directional dynamic pressure bearing structure of claim 1, wherein the first grooves are parallel to the third grooves. The non-directional dynamic pressure bearing structure according to claim 1, wherein the angle of the first angle is between 10 degrees and 50 degrees. The non-directional dynamic pressure bearing structure according to claim 1, wherein the angle of the second angle is between 10 degrees and 50 degrees. A non-directional dynamic pressure bearing structure includes: a bearing body having a first end and a second end; a rotating shaft hole, the rotating shaft hole is disposed at a center of the bearing body, and the rotating shaft hole penetrates to the a first end and a second end of the bearing body, an oil storage groove is disposed on an inner wall of the rotating shaft hole; and two oil guiding groove groups are disposed on an inner wall of the rotating shaft hole, the two guides The oil groove group is respectively adjacent to the first end and the second end of the bearing body, the oil storage groove is located between the two oil guiding groove groups, and each oil guiding groove group comprises at least a plurality of first grooves and a plurality of a second trench and a plurality of third trenches, the first trenches are disposed parallel to each other and spaced apart from each other, and the second trenches are disposed parallel to each other and spaced apart from each other, and the third trenches are parallel and spaced apart from each other The second trenches are respectively connected between the first trenches and the third trenches, and one ends of the first trenches are respectively a first sharp point and the second trenches One end is connected, and the first trenches are respectively connected to the second trenches in a V-shape, and each phase is connected A first angle is formed between the first trench and the second trench, and the other ends of the second trenches are respectively connected to one ends of the third trenches by a second cusp to The second trenches are respectively V-shaped connected to the third trenches, and a second angle is formed between each of the connected second trenches and the third trenches, and the first cusps and the first The apex points are in the opposite direction. The non-directional dynamic pressure bearing structure according to claim 6, wherein the shaft hole has a diameter of 1 to 3 mm, and the length of the oil guiding groove group is 1.5 mm or more. The non-directional dynamic pressure bearing structure of claim 6, wherein the first grooves are parallel to the third grooves. The non-directional dynamic pressure bearing structure according to claim 6, wherein the angle of the first angle is between 10 degrees and 50 degrees. The non-directional dynamic pressure bearing structure according to claim 6, wherein the angle of the second angle is between 10 degrees and 50 degrees.