CN203308539U - Roller with unloading function - Google Patents
Roller with unloading function Download PDFInfo
- Publication number
- CN203308539U CN203308539U CN2013203982968U CN201320398296U CN203308539U CN 203308539 U CN203308539 U CN 203308539U CN 2013203982968 U CN2013203982968 U CN 2013203982968U CN 201320398296 U CN201320398296 U CN 201320398296U CN 203308539 U CN203308539 U CN 203308539U
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- CN
- China
- Prior art keywords
- roller
- curved portions
- columnar portion
- cylindrical part
- shaped part
- 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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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a roller with an unloading function. The roller comprises a roller body (1), wherein the roller body (1) comprises a cylindrical part (101), and a left arc-shaped part (102) and a right arc-shaped part (103) which are respectively arranged at two ends of the cylindrical part (101) by integrally molding, and the diameters of the left arc-shaped part (102) and the right arc-shaped part (103) are gradually decreased from one ends connected with the cylindrical part (101) to the other ends away from the cylindrical part (101). According to the roller disclosed by the utility model, when two ends of the roller swing, the distribution of load born by the roller is relatively uniform, so that the wear of the left end and the right end of the roller is small, the roller is less in heating, low in noise and long in service life when working, and the wear of a cam is small.
Description
Technical field
The present invention relates to a kind of roller with Unloading Effect.
Background technique
Valve rocker is the important composition parts of engine air distribution system, usually the folding of intake valve and exhaust valve is controlled in the swing of controlling this valve rocker by cam, with the air inlet that reaches control engine and the purpose of exhaust, an end of part valve rocker is provided with roller at present, the roller of prior art as shown in Figure 1, it is cylindrical structural, when rotating, cam drives this valve rocker swing with roller contact, and can drive roller when cam and roller contact, rotate, roller often can cause its two ends, left and right to rock due to extraneous load such as vehicle vibrations when High Rotation Speed phenomenon, and when rock at the two ends, left and right of roller, can make the two ends, left and right of only having roller when cam rotates contact with cam, this will make the force bearing point of roller concentrate on the two ends, left and right, make the suffered load skewness of roller, make two ends, the left and right wearing and tearing of roller larger, while making roller work, heating is larger, noise is larger, working life is shorter, and the force bearing point on cam is also comparatively concentrated can make cam and roller contact the time, make the wearing and tearing of cam larger.
Summary of the invention
Technical problem to be solved by this invention is, a kind of roller with Unloading Effect is provided, when rock at the two ends of roller, the suffered load of roller distributes comparatively even, make two ends, the left and right wearing and tearing of roller less, while making roller work, heating is less, noise is less, working life is longer, and makes the wearing and tearing of cam less.
For solving the problems of the technologies described above, roller with Unloading Effect provided by the invention, it comprises roller body, described roller body comprises columnar portion and one-body molded left curved portions and the right curved portions that is arranged on the columnar portion two ends respectively, and described left curved portions all reduces to the other end diameter away from columnar portion from the end be connected with columnar portion gradually with right curved portions.
The length of described left curved portions and right curved portions be roller body length 1/3～1/4.
The difference L of the diameter at the two ends of described left curved portions and right curved portions is 0.02mm～0.03mm.
After adopting above structure, the present invention compared with prior art, has advantages of following:
Because the two ends of roller body are respectively left curved portions and right curved portions, the diameter of left curved portions and right curved portions is less than the diameter of columnar portion, when roller makes the two ends, left and right of roller rock due to extraneous load during at High Rotation Speed, left curved portions is basic concordant with columnar portion with right curved portions, make the force bearing point of roller not be concentrated in the two ends, left and right, make the suffered load of roller distribute comparatively even, make two ends, the left and right wearing and tearing of roller less, while making roller work, heating is less, noise is less, working life is longer, and make the wearing and tearing of cam less.
In addition, the length of left curved portions and right curved portions be roller body length 1/3～1/4, make roller be subject to extraneous load and two ends, left and right while rocking, left curved portions is more concordant with columnar portion with right curved portions, makes the suffered load of roller distribute more even.
In addition, the difference L of the diameter at the two ends of left curved portions and right curved portions is 0.02mm～0.03mm, make roller be subject to extraneous load and two ends, left and right while rocking, left curved portions is more concordant with columnar portion with right curved portions, makes the suffered load of roller distribute more even.
The accompanying drawing explanation
Fig. 1 is the structural representation of the roller of prior art;
Fig. 2 is the structural representation with roller of Unloading Effect of the present invention.
Wherein, 1, roller body; 101, columnar portion; 102, left curved portions; 103, right curved portions; 104, fillet part.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
By shown in Figure 2, the present invention has the roller of Unloading Effect, it comprises roller body 1, described roller body 1 comprises columnar portion 101 and one-body molded left curved portions 102 and the right curved portions 103 that is arranged on columnar portion 101 two ends respectively, described left curved portions 102 all reduces to the other end diameter away from columnar portion 101 from the end be connected with columnar portion 101 gradually with right curved portions 103, and the week of the other end away from columnar portion 101 of described left curved portions 102 and right curved portions 103 is along being equipped with fillet part 104.
The length of described left curved portions 102 and right curved portions 103 be roller body 1 length 1/3～1/4, preferred, the length of described left curved portions 102 and right curved portions 103 be roller body 1 length 1/4.
The difference L of the diameter at the two ends of described left curved portions 102 and right curved portions 103 is 0.02mm～0.03mm, and preferred, the difference L of the diameter at the two ends of described left curved portions 102 and right curved portions 103 is 0.025mm.
Claims (3)
1. roller with Unloading Effect, it comprises roller body (1), it is characterized in that: described roller body (1) comprises columnar portion (101) and one-body molded left curved portions (102) and the right curved portions (103) that is arranged on columnar portion (101) two ends respectively, and described left curved portions (102) all reduces to the other end diameter away from columnar portion (101) from the end be connected with columnar portion (101) gradually with right curved portions (103).
2. the roller with Unloading Effect according to claim 1 is characterized in that: the length of described left curved portions (102) and right curved portions (103) be roller body (1) length 1/3～1/4.
3. the roller with Unloading Effect according to claim 1, it is characterized in that: poor (L) of the diameter at the two ends of described left curved portions (102) and right curved portions (103) is 0.02mm～0.03mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203982968U CN203308539U (en) | 2013-07-05 | 2013-07-05 | Roller with unloading function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203982968U CN203308539U (en) | 2013-07-05 | 2013-07-05 | Roller with unloading function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308539U true CN203308539U (en) | 2013-11-27 |
Family
ID=49614754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203982968U Expired - Fee Related CN203308539U (en) | 2013-07-05 | 2013-07-05 | Roller with unloading function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308539U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382863A (en) * | 2013-07-05 | 2013-11-06 | 宁波中和汽配有限公司 | Roller with unloading function, and special processing device and processing method thereof |
-
2013
- 2013-07-05 CN CN2013203982968U patent/CN203308539U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382863A (en) * | 2013-07-05 | 2013-11-06 | 宁波中和汽配有限公司 | Roller with unloading function, and special processing device and processing method thereof |
| CN103382863B (en) * | 2013-07-05 | 2015-11-25 | 宁波中和汽配有限公司 | There is its special apparatus for working of roller and the processing method of Unloading Effect |
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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: 20131127 Termination date: 20160705 |