CN1076450C

CN1076450C - Sleeve Bearing Unit

Info

Publication number: CN1076450C
Application number: CN97116369A
Authority: CN
Inventors: 陈李龙
Original assignee: Delta Electronics Inc
Current assignee: Delta Electronics Inc
Priority date: 1997-08-18
Filing date: 1997-08-18
Publication date: 2001-12-19
Anticipated expiration: 2017-08-18
Also published as: CN1208825A

Abstract

The present invention relates to a sleeve bearing device, which is applied to a shaft rotating in a first direction, and comprises: a bearing seat; and a bearing, which is combined with the bearing seat at the bottom of the bearing seat to form a space filled with lubricant, and has a vertical through hole connected to the space, which is used to fit with the shaft, and the through hole wall has a first area with a thread in the first rotation direction.

Description

Sleeve type bearing arrangement

The present invention relates to a kind of bearing means, refer to a kind of powder sintered sleeve type bearing arrangement especially.

Bearing is the normal member that uses in the mechanical implement, and present widely used ball formula bearing, can't be applied in some lower-cost products because its price is very high, and replace with lower powder sintered sleeve (SIeeve) the formula bearing of price mostly, device shown in Fig. 1 (a), its running shaft 11 is by a vertical open-work 12 and bearing 13 fits made from powder China ink sintering, bearing support 14 forms a space 15 during with bearing 13 combinations in the bottom, be full of lubrication oil fat therebetween, the frictional force when running up with respect to bearing 13 in order to reduce running shaft 11.But because of running up of running shaft 11 caused through the outflow of the gap of 12 of the vertical open-works with this of running shaft 11 and leaked outside driving lubrication oil fat, and the high heat that is produced because of rubbing is evaporated grease, cause running shaft 11 and the contact friction of vertical open-work wall, make this vertical open-work stressed end to end big (shown in Fig. 1 (b)), and cause shorten the working life of this kind bearing means.

The object of the present invention is to provide a kind of bearing means that prevents that grease from leaking outside and evaporating.

The present invention relates to a kind of sleeve type bearing arrangement, it is applied to one and makes the axle that first direction rotates, and it comprises: a bearing support; An and bearing, in order to be full of the space of oiling agent in this bearing support bottom formation one with this bearing support combination, it has a vertical open-work that is communicated to this space, in order to close with this axle sleeve, has a first area that is provided with this first sense of rotation screw thread on this open-work wall, and a second area that is provided with second a sense of rotation screw thread opposite with first sense of rotation, this second area is positioned at this below, first area, and the length of this second area is less than the length of this first area; This bearing has many length not as good as this groove that holds a top and be parallel to this vertical open-work with this bearing support junction point.

Best, between this first area and this second area, have the 3rd zone of not establishing screw thread in the sleeve type bearing arrangement on this open-work wall.

According to above-mentioned design, this mentioned first sense of rotation can be and turns clockwise in the sleeve type bearing arrangement, and this second sense of rotation is for being rotated counterclockwise.Certainly, this first sense of rotation also can be and is rotated counterclockwise, and this second sense of rotation is for turning clockwise.

According to above-mentioned design, the stored oiling agent in this space is a lubrication oil fat in the sleeve type bearing arrangement.

According to above-mentioned design, this bearing is a powder China ink sintered bearing in the sleeve type bearing arrangement.

According to above-mentioned design, this bearing and this bearing support junction point have many length not as good as this bearing top and be parallel to the groove of this vertical open-work in the sleeve type bearing arrangement.

The present invention can be able to more deep understanding by following graphic and detailed description:

Fig. 1 (a) and Fig. 1 (b) are the structural representation and the shortcoming schematic representation of the sleeve type bearing commonly used.

Fig. 2 is the structural representation of a preferred embodiment of the present invention.

See also Fig. 2, it is the structural representation of a preferred embodiment of the present invention, running shaft 21 is via a vertical open-work 22 and with made bearing 23 fits of powder China ink sintering, bearing support 24 makes up the back can store lubrication oil fat in bottom formation one space 25 with bearing 23, for the shortcoming that device leaks outside because of grease and the grease evaporation is caused is commonly used in improvement, the present invention proposes a settling mode: vertical open-work wall is divided into A, B, three sections (first areas of C, the 3rd zone, second area), when if running shaft 21 turns clockwise, the screw thread that turns clockwise in the setting of A section then, the screw thread that the setting of C section is rotated counterclockwise, the B section is not then established screw thread, so, A section screw thread produces downward pressure because of the grease rotation, otherwise the C section produces grease and upwards pressure, the two increases the oil pressure of B section (the 3rd zone), can improve the member that situation causes shown in Fig. 1 (b) damages, and because the A segment length is slightly larger than the B section, therefore grease produces downward pressure greater than upwarding pressure, and make in the space 25 store grease internal pressure become big, the groove 26 that grease can be parallel to this vertical open-work by many of the junction point of being located at bearing 23 and this bearing support 24 rises and infiltrates this bearing and be back in this vertical open-work and form circulation (shown in arrow among Fig. 2), can effectively regulate temperature, avoid the grease evaporation, thoroughly improve the shortcoming of this located by prior art, reach main purpose of the present invention.Certainly, if running shaft 21 is when being rotated counterclockwise, the screw thread that is rotated counterclockwise in the setting of A section then, the screw thread that the setting of C section turns clockwise gets final product.

Bearing means proposed by the invention, because improving grease that located by prior art has leaks outside and shortcoming such as dry and astringent, cost is cheap than ball formula bearing again, thus can be widely used in as aspects such as motor, mechanical gear bearing, wrist-watch bearing, automobile bearings, practical.

The present invention can be changed and revised by those of ordinary skill in the art, but does not break away from the scope of asking for protection as claims.

Claims

1. A sleeve type bearing device applied to a shaft rotating in a first direction, characterized in that it comprises:

a bearing housing; and

A bearing is used to combine with the bearing seat to form a space filled with lubricant at the bottom of the bearing seat, which has a vertical through hole connected to the space for fitting with the shaft, and the through hole wall has a a first area with threads in the first direction of rotation, and a second area with threads in a second direction of rotation opposite to the first direction of rotation, the second area is located below the first area, and the second the length of the region is less than the length of the first region;

The joint between the bearing and the bearing seat has a plurality of grooves whose length is shorter than the top of the bearing shaft and parallel to the vertical through hole.

2 . The sleeve type bearing device as claimed in claim 1 , wherein a third area without thread is provided on the wall of the through hole between the first area and the second area. 3 .

3. The sleeve bearing device as claimed in claim 1, wherein the first rotation direction is clockwise rotation, and the second rotation direction is counterclockwise rotation.

4. The sleeve bearing device as claimed in claim 1, wherein the first rotation direction is counterclockwise rotation, and the second rotation direction is clockwise rotation.

5. The sleeve bearing device according to claim 1, wherein the lubricant stored in the space is lubricating grease.

6. The sleeve type bearing device according to claim 1, wherein the bearing is a powder-ink sintered bearing shaft.