CN204422978U - A kind of jewel bearing - Google Patents
A kind of jewel bearing Download PDFInfo
- Publication number
- CN204422978U CN204422978U CN201420849973.8U CN201420849973U CN204422978U CN 204422978 U CN204422978 U CN 204422978U CN 201420849973 U CN201420849973 U CN 201420849973U CN 204422978 U CN204422978 U CN 204422978U
- Authority
- CN
- China
- Prior art keywords
- hole
- bearing body
- arcwall face
- jewel
- wrist
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Sliding-Contact Bearings (AREA)
Abstract
The utility model provides a kind of jewel bearing, it is characterized in that comprising bearing body, described bearing body is right cylinder, described bearing body side is provided with arc groove, described arc-shaped groove bottom is communicated with a through hole, described through hole runs through described bearing body, and the side of described through hole is arcwall face.The side of through hole is changed into arcwall face by plane, the wheel shaft of wrist-watch and the mating surface of jewel hole are contacted by face and change linear contact lay into, and only have the top of arcwall face just to contact with the wheel shaft of wrist-watch, contact area is little, reduce friction force, improve accuracy when wrist-watch is walked.The top of arcwall face is positioned at the 2/5-3/5 place of described bearing body, ensure that jewel bearing contacts with the wheel shaft of wrist-watch stable.
Description
Technical field
The utility model belongs to field of bearings, particularly relates to a kind of jewel bearing.
Background technology
Jewel bearing is the sliding bearing made with hard materials such as jewels.Jewel bearing is mainly used in instrument and meter.Instrument and meter bearing bearing load is very little, but requires that running accuracy is high, sensitivity good, long service life.Jewel has the performances such as friction factor is little, hardness is high, corrosion-resistant, thermal expansivity is little, compressive strength is high, can meet the request for utilization of instrument and meter bearing.The material making jewel bearing has corundum, agate, devitrified glass etc.Jewel bearing is mainly divided into hole jewel bearing, face lathe and recessed jewel 3 kinds in version.The through hole of jewel bearing is plane straight hole, and the wheel shaft of wrist-watch and the mating surface of jewel hole are the faces of cylinder, and friction is comparatively large, directly affects accuracy when wrist-watch is walked.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of jewel bearing, it is characterized in that comprising bearing body, described bearing body is right cylinder, described bearing body side is provided with arc groove, described arc-shaped groove bottom is communicated with a through hole, and described through hole runs through described bearing body, and the side of described through hole is arcwall face.
Described arcwall face curves inwardly.
The top of described arcwall face is positioned at the 2/5-3/5 place of described bearing body.
The material of described bearing body is ruby.
The beneficial effects of the utility model are: change the side of through hole into arcwall face by plane, the wheel shaft of wrist-watch and the mating surface of jewel hole are contacted by face and change linear contact lay into, the top of arcwall face is only had just to contact with the wheel shaft of wrist-watch, contact area is little, reduce friction force, improve accuracy when wrist-watch is walked.The top of arcwall face is positioned at the 2/5-3/5 place of described bearing body, ensure that jewel bearing contacts with the wheel shaft of wrist-watch stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
In figure, 1, bearing body; 2, arc groove; 3, through hole; 4, arcwall face.
As shown in Figure 1, bearing body 1 is right cylinder, and bearing body 1 side is provided with arc groove 2, and be communicated with a through hole 3 bottom arc groove 2, through hole 3 runs through bearing body 1, and the side of through hole 3 is arcwall face 4.Arcwall face 4 curves inwardly.The material of bearing body 1 is ruby.The top of arcwall face 4 is positioned at 1/2 place of bearing body 1.
Add man-hour, first on bearing body 1, process arc groove 2, then open hole 3, then arcwall face 4 is processed in the side of through hole 3.After processing, the surfaceness of arcwall face 4 needs to reach 0.025-0.012mmm, the nonconcentricity < 0.003mm of through hole 3 and bearing body 1.
Be described in detail of the present utility model by embodiment above, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (4)
1. a jewel bearing, is characterized in that comprising bearing body, and described bearing body is right cylinder, described bearing body side is provided with arc groove, described arc-shaped groove bottom is communicated with a through hole, and described through hole runs through described bearing body, and the side of described through hole is arcwall face.
2. a kind of jewel bearing as claimed in claim 1, is characterized in that described arcwall face curves inwardly.
3. a kind of jewel bearing as claimed in claim 1, is characterized in that the top of described arcwall face is positioned at the 2/5-3/5 place of described bearing body.
4. a kind of jewel bearing as claimed in claim 1, is characterized in that the material of described bearing body is ruby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420849973.8U CN204422978U (en) | 2014-12-29 | 2014-12-29 | A kind of jewel bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420849973.8U CN204422978U (en) | 2014-12-29 | 2014-12-29 | A kind of jewel bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204422978U true CN204422978U (en) | 2015-06-24 |
Family
ID=53473330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420849973.8U Expired - Fee Related CN204422978U (en) | 2014-12-29 | 2014-12-29 | A kind of jewel bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204422978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773944A (en) * | 2017-11-13 | 2019-05-21 | 科马杜尔公司 | Method for manufacturing hole jewel |
-
2014
- 2014-12-29 CN CN201420849973.8U patent/CN204422978U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773944A (en) * | 2017-11-13 | 2019-05-21 | 科马杜尔公司 | Method for manufacturing hole jewel |
| US11175629B2 (en) | 2017-11-13 | 2021-11-16 | Comadur S.A. | Method for manufacturing a hole jewel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20161229 |