CN204784665U - Piston pin - Google Patents
Piston pin Download PDFInfo
- Publication number
- CN204784665U CN204784665U CN201520340491.4U CN201520340491U CN204784665U CN 204784665 U CN204784665 U CN 204784665U CN 201520340491 U CN201520340491 U CN 201520340491U CN 204784665 U CN204784665 U CN 204784665U
- Authority
- CN
- China
- Prior art keywords
- hole
- lightening hole
- wrist pin
- lightening
- piston pin
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a piston pin, relates to one kind and is used for the piston pin to the connecting rod with piston engine's hinge joint. Still be provided with the lightening hole at piston pin terminal surface, hole around, belong to and subtract heavy piston pin, add 8 lightening holes through operating the computer at the piston pin body, further alleviateed piston pin's weight, reduced reciprocating motion's inertial force, reduced the loss of energy.
Description
Technical field
The utility model relates to a kind of wrist pin for the piston of reciprocating engine being connected to connecting rod.
Background technique
In current motor car engine industry, the effect of wrist pin is the sole component connecting piston and connecting rod, and the Placement of wrist pin has semi-floating and wholly floating two kinds, wherein wholly floating is the most frequently used, advantage: pin surface relative sliding velocity is little, it is relatively little that friction generates heat, even wearing.When designing wrist pin, pin not only has enough strong mechanical strength and wear resistance, also will have stronger fatigue strength, present stage gudgeon pin bore form have cylinder type, central gross weight, periphery is all adopt smooth cylindrical profile.For high speed engine, current wrist pin is slightly heavy, causes adverse effect to reciprocating inertial force.
Summary of the invention
The utility model proposes a kind of wrist pin, solve existing piston mass large, be unfavorable for reciprocating problem, its have structure simple, be convenient to process, advantage easy to use.
The technological scheme that the utility model adopts is: a kind of wrist pin, for the connector bar hole of connecting rod and the piston of internal-combustion engine are linked together, wherein, described wrist pin has one and is connected successively by the first cone shape hole, cylindrical hole, the second cone shape hole and formed endoporus, and its technological points is: around wrist pin end face, endoporus, be also provided with lightening hole.
As a kind of preferred version of the present utility model, the lightening hole of each wrist pin end face forms by the first lightening hole, the second lightening hole, the 3rd lightening hole and the 4th lightening hole, the first described lightening hole and the 3rd lightening hole are positioned on same axis, second lightening hole, the 4th lightening hole are positioned on another straight line with above-mentioned axes normal, and above-mentioned axis and straight line are all through the center of cylindrical hole.
As another kind of preferred version of the present utility model, described lightening hole length should be less than the length of the first cone shape hole or the second cone shape hole.
As another preferred version of the present utility model, described lightening hole is tapered.
The beneficial effects of the utility model and advantage are: wrist pin of the present utility model, also lightening hole is provided with around wrist pin end face, endoporus, belong to Weight reduced type wrist pin, add 8 lightening holes by machine on wrist pin body, further mitigate the weight of wrist pin, decrease reciprocating inertial force, decrease the loss of energy.
Accompanying drawing explanation
Fig. 1 is the sectional view of the utility model wrist pin;
Fig. 2 is the end view of the utility model wrist pin;
Sequence number is described as follows: 1 wrist pin end face, 2 lightening holes, 3 cylindrical holes, 4 first cone shape holes, 5 second cone shape holes, 6, wrist pin.
Embodiment
Be described in further detail below in conjunction with accompanying drawing 1 ~ 2 pair of the utility model.
Embodiment 1:
Wrist pin in the present embodiment, for the connector bar hole of connecting rod and the piston of internal-combustion engine are linked together, wherein, described wrist pin 6 has one and is connected successively by the first cone shape hole 4, cylindrical hole 3, second cone shape hole 5 and formed endoporus, lightening hole 2 is also provided with around wrist pin end face 1, endoporus, and this lightening hole 2 is tapered, lightening hole 2 length should be less than the length (lightening hole length was determined afterwards according to FEM (finite element) calculation) of the first cone shape hole 4 or the second cone shape hole 5.
The lightening hole 2 be positioned on wrist pin end face 1 is made up of the first lightening hole, the second lightening hole, the 3rd lightening hole and the 4th lightening hole, this first lightening hole and the 3rd lightening hole are positioned on same axis, second lightening hole, the 4th lightening hole are positioned on another straight line with above-mentioned axes normal, above-mentioned axis and straight line are all through the center of cylindrical hole, and the central angle alpha namely between two lightening holes is 90 degree.
The described lightening hole being positioned at another wrist pin end face is identical with arranging on wrist pin end face 1.
Lightening hole in the present embodiment utilizes machine to add rear chamfering, and the removal wedge angle burr at edge is made, and this design proposal adapts to the wrist pin of various types.
Although the foregoing describe embodiment of the present utility model, but the those skilled in the art in related domain are to be understood that, these only illustrate, can make various changes or modifications, and do not deviate from principle of the present utility model and essence to these mode of executions.Scope of the present utility model is only defined by the appended claims.
Claims (4)
1. a wrist pin, for the connector bar hole of connecting rod and the piston of internal-combustion engine are linked together, wherein, described wrist pin has one and is connected successively by the first cone shape hole, cylindrical hole, the second cone shape hole and formed endoporus, it is characterized in that: around wrist pin end face, endoporus, be also provided with lightening hole.
2. wrist pin as claimed in claim 1, it is characterized in that: the lightening hole of described each wrist pin end face, form by the first lightening hole, the second lightening hole, the 3rd lightening hole and the 4th lightening hole, the first described lightening hole and the 3rd lightening hole are positioned on same axis, second lightening hole, the 4th lightening hole are positioned on another straight line with above-mentioned axes normal, and above-mentioned axis and straight line are all through the center of cylindrical hole.
3. wrist pin as claimed in claim 1, is characterized in that: described lightening hole length should be less than the length of the first cone shape hole or the second cone shape hole.
4. wrist pin as claimed in claim 1, is characterized in that: described lightening hole is tapered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340491.4U CN204784665U (en) | 2015-05-25 | 2015-05-25 | Piston pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340491.4U CN204784665U (en) | 2015-05-25 | 2015-05-25 | Piston pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204784665U true CN204784665U (en) | 2015-11-18 |
Family
ID=54524717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520340491.4U Expired - Fee Related CN204784665U (en) | 2015-05-25 | 2015-05-25 | Piston pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204784665U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547946A (en) * | 2018-03-28 | 2018-09-18 | 安徽宝泰汽车部件有限公司 | A kind of piston pin |
| CN111912729A (en) * | 2020-06-30 | 2020-11-10 | 中国北方发动机研究所(天津) | Piston pin, bush test piece structure and engine swing wear simulation test tool |
-
2015
- 2015-05-25 CN CN201520340491.4U patent/CN204784665U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547946A (en) * | 2018-03-28 | 2018-09-18 | 安徽宝泰汽车部件有限公司 | A kind of piston pin |
| CN111912729A (en) * | 2020-06-30 | 2020-11-10 | 中国北方发动机研究所(天津) | Piston pin, bush test piece structure and engine swing wear simulation test tool |
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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 |
Granted publication date: 20151118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |