CN2495843Y - Eccentric rotary arm type bearing - Google Patents
Eccentric rotary arm type bearing Download PDFInfo
- Publication number
- CN2495843Y CN2495843Y CN 01245403 CN01245403U CN2495843Y CN 2495843 Y CN2495843 Y CN 2495843Y CN 01245403 CN01245403 CN 01245403 CN 01245403 U CN01245403 U CN 01245403U CN 2495843 Y CN2495843 Y CN 2495843Y
- Authority
- CN
- China
- Prior art keywords
- eccentric
- utility
- model
- hole
- rotary arm
- 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
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to an eccentric rotating arm bearing. The utility model comprises an eccentric body, a maintaining frame which is movably connected in the outer round of the eccentric body and a rolling body; the eccentric body forms an eccentric hole; the inner wall of the eccentric hole is provided with a vertical button groove; the eccentric body is a reverse symmetric double eccentric structure; and the connecting line between the two eccentric middle points and the eccentric hole is one hundred and eighty degree. The utility model can overcome the disadvantages of the prior art which has a high cost, a low precision and difficult assembly. The utility model has the advantages of strong carrying capability, high moving precision, low cost, long service life and small noises; moreover the utility model can enhance the diameter of the inner hole and can avoid the disease of the input axis which is too thin and will be broken.
Description
The utility model relates to a kind of eccentric rotary arm bearing.
Rotary arm bearing is a kind of key components and parts in the cycloidal planetary gear speed reducer.When the needs bearing is worked under eccentric state, must the concentric hole in bearing in the setting-up eccentricity axle, and the processing eccentric shaft not only difficulty is big, and take a lot of work, time-consuming, simultaneously, the manufacture cost height of eccentric stiffener, low precision, the assembling difficulty of eccentric shaft and bearing.
The purpose of this utility model is to solve the problem that the processing cost height, the precision that exist in the prior art are low, assembling is difficult.The utility model comprises eccentric body and is movably connected in the retainer and the rolling element of eccentric body periphery, form eccentric opening in the eccentric body, the eccentric opening inwall is provided with vertical keyway, and eccentric body is two eccentric structures of inversion symmetry, and the line angle of two eccentric mid points and eccentric opening mid point is 180 degree.The rotary arm bearing of using said structure has the following advantages: 1, reduce mechanism element, reduce cost; 2, bearing capacity is strong, and kinematic accuracy improves, and has prolonged working life; 3, effectively reduce noise; 4, under the identical situation of external diameter, can increase diameter of bore, avoid the defect of the too thin easy-rupturing of input shaft.
Below in conjunction with drawings and Examples detailed content of the present utility model is described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
As shown in the figure, the utility model comprises eccentric body 1 and is movably connected in the retainer 2 and the rolling element 3 of eccentric body 1 periphery, form eccentric opening 4 in the eccentric body 1, eccentric opening 4 inwalls are provided with vertical keyway 5, eccentric body 1 is two eccentric structures of inversion symmetry, and the line angle of two eccentric mid points and eccentric opening 4 mid points is 180 degree.Rolling element 3 can adopt roller, ball or roller.Under user mode, axle inserts in the eccentric opening 4, and the keyway on the axle is relative with keyway 5 on eccentric opening 4 inwalls, and by after the key connecting, with regard to the energy proper functioning.
Claims (2)
1, a kind of eccentric rotary arm bearing, comprise eccentric body and be movably connected in the retainer and the rolling element of eccentric body periphery, form eccentric opening in the eccentric body, the eccentric opening inwall is provided with vertical keyway, it is characterized in that: eccentric body (1) is two eccentric structures of inversion symmetry, and the line angle of two eccentric mid points and eccentric opening mid point is 180 degree.
2, eccentric rotary arm bearing according to claim 1 is characterized in that: rolling element (3) is roller or ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245403 CN2495843Y (en) | 2001-08-14 | 2001-08-14 | Eccentric rotary arm type bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01245403 CN2495843Y (en) | 2001-08-14 | 2001-08-14 | Eccentric rotary arm type bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2495843Y true CN2495843Y (en) | 2002-06-19 |
Family
ID=33656662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01245403 Expired - Fee Related CN2495843Y (en) | 2001-08-14 | 2001-08-14 | Eccentric rotary arm type bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2495843Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790948A (en) * | 2012-10-31 | 2014-05-14 | 优必胜(上海)精密轴承制造有限公司 | Cylindrical roller bearing |
-
2001
- 2001-08-14 CN CN 01245403 patent/CN2495843Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790948A (en) * | 2012-10-31 | 2014-05-14 | 优必胜(上海)精密轴承制造有限公司 | Cylindrical roller bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |