CN208919304U - A kind of piston with stepped hole - Google Patents
A kind of piston with stepped hole Download PDFInfo
- Publication number
- CN208919304U CN208919304U CN201821606150.7U CN201821606150U CN208919304U CN 208919304 U CN208919304 U CN 208919304U CN 201821606150 U CN201821606150 U CN 201821606150U CN 208919304 U CN208919304 U CN 208919304U
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- CN
- China
- Prior art keywords
- piston
- stepped hole
- hole
- pin
- pin hole
- 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.)
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of pistons with stepped hole, it includes piston body, both ends inside piston body be respectively equipped with axially through the first pin hole and the second pin hole, the inner wall of first pin hole is equipped with the baffle ring slot of annular, second pin hole is stepped hole, the small head end of the stepped hole forms the rib for blocking piston pin axial movement towards outside piston body between the big stomidium and small stomidium of the stepped hole.The utility model carries out axial limiting to piston pin by setting stepped hole and baffle ring slot, can not only reduce production cost, while can also improve assembly efficiency.
Description
Technical field
The utility model relates to piston field more particularly to a kind of pistons with stepped hole.
Background technique
In the prior art, baffle ring slot is respectively set on the both ends pin hole of piston, a gear is installed respectively in two baffle ring slots
Lock ring limits the axial float of piston pin, and this infrastructure cost is relatively high, and the also phase of the assembly between piston and pin
To complexity.
Summary of the invention
The purpose of this utility model is to provide a kind of pistons at low cost with stepped hole.
To achieve the above object, the utility model uses following technical scheme:
A kind of piston with stepped hole, including piston body, the both ends inside piston body be respectively equipped with axially through first
Pin hole and the second pin hole, the inner wall of first pin hole are equipped with the baffle ring slot of annular, and second pin hole is stepped hole, the rank
The small head end in terraced hole blocks piston pin axial movement towards being formed outside piston body, between the big stomidium and small stomidium of the stepped hole
Rib.
Big 1.2-1.5mm of the diameter of the big stomidium of the stepped hole than small end bore dia.
The outside of the rib has rounded corner.
The radius of the rounded corner is 0.2-0.5mm.
The utility model uses above technical scheme, has the advantages that through setting stepped hole and baffle ring slot pair
Piston pin carries out axial limiting, can not only reduce production cost (saving a baffle ring loop material cost and assembly cost), together
When can also improve assembly efficiency.
Detailed description of the invention
The utility model is described in further details below in conjunction with the drawings and specific embodiments:
Fig. 1 is a kind of schematic diagram of the piston with stepped hole of the utility model.
Specific embodiment
As shown in Figure 1, the utility model includes piston body 1, the both ends inside piston body 1 be respectively equipped with axially through
One pin hole 2 and the second pin hole 3, the inner wall of first pin hole 2 are equipped with the baffle ring slot 4 of annular, and second pin hole 3 is ladder
Hole, the small head end of the stepped hole form between the big stomidium and small stomidium of the stepped hole towards outside piston body 1 and block piston pin
The rib 31 of axial movement.
Big 1.2-1.5mm of the diameter of the big stomidium of the stepped hole than small end bore dia.
The outside of the rib 31 has rounded corner 32.The radius of rounded corner 32 is 0.2-0.5mm.
Working principle of the utility model is: piston pin is packed on the pin hole of piston body 1, one end of piston pin is stuck in ladder
At the rib 31 in hole, the other end of piston pin carries out axial limiting by the retaining ring being mounted in baffle ring slot 4, and above structure is not only
Production cost (saving a baffle ring loop material cost and assembly cost) can be reduced, while assembly efficiency can also be improved.
Claims (4)
1. a kind of piston with stepped hole, including piston body, the both ends inside piston body be respectively equipped with axially through the first pin
Hole and the second pin hole, the inner wall of first pin hole are equipped with the baffle ring slot of annular, it is characterised in that: second pin hole is rank
Terraced hole, the small head end of the stepped hole form between the big stomidium and small stomidium of the stepped hole towards outside piston body and block piston
Sell the rib of axial movement.
2. a kind of piston with stepped hole according to claim 1, it is characterised in that: the big stomidium of the stepped hole it is straight
Big 1.2-1.5mm of the diameter than small end bore dia.
3. a kind of piston with stepped hole according to claim 1, it is characterised in that: the outside of the rib has rounding
Angle.
4. a kind of piston with stepped hole according to claim 3, it is characterised in that: the radius of the rounded corner is 0.2-
0.5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821606150.7U CN208919304U (en) | 2018-09-29 | 2018-09-29 | A kind of piston with stepped hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821606150.7U CN208919304U (en) | 2018-09-29 | 2018-09-29 | A kind of piston with stepped hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208919304U true CN208919304U (en) | 2019-05-31 |
Family
ID=66707836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821606150.7U Active CN208919304U (en) | 2018-09-29 | 2018-09-29 | A kind of piston with stepped hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208919304U (en) |
-
2018
- 2018-09-29 CN CN201821606150.7U patent/CN208919304U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220211 Address after: 350000 No. 3 comprehensive office building, No. 8, business Avenue, Nantong town, Minhou County, Fuzhou City, Fujian Province Patentee after: Fujian Huawei Juquan Precision Technology Co.,Ltd. Address before: 350000 Fujian Province, Jinan District of Fuzhou City Drum Shan Fuxing Investment Zone Patentee before: Fuzhou Juquan Automobile Fitting Co.,Ltd. |