CN205779288U - Engine piston with the Slideslip wing - Google Patents
Engine piston with the Slideslip wing Download PDFInfo
- Publication number
- CN205779288U CN205779288U CN201620644875.XU CN201620644875U CN205779288U CN 205779288 U CN205779288 U CN 205779288U CN 201620644875 U CN201620644875 U CN 201620644875U CN 205779288 U CN205779288 U CN 205779288U
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- CN
- China
- Prior art keywords
- piston
- groove
- slideslip
- wing
- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses the engine piston of the band Slideslip wing, including piston only, before and after piston only, side is provided with piston pin hole, the cylindrical of piston only is provided with piston ring groove, it is characterized in that: piston ring groove is provided with upper, middle and lower three, lower piston annular groove has wider groove width and arranges multiple first spill port at bottom land, lower piston annular groove diameter shrinkage part is presented herein below, the bottom of diameter shrinkage part and the cylindrical of piston only, by chamfered transition, inclined-plane arrange multiple second spill port；Before and after piston only, side is arranged with groove, and the face center position of groove is provided with boss, is provided with circlip groove inside the opening of piston pin hole, and the opening end face of piston pin hole is provided with and is partially recessed；The bottom center of described groove has the outward extending Slideslip wing, and the outer surface of the Slideslip wing is arc surface, and the cylindrical of arc surface and piston only is on the same face of cylinder.This utility model is altered oil and prevents piston pin from moving axially in can reducing cylinder, favorable working performance, service life are long.
Description
Technical field
This utility model relates to a kind of piston for motor car engine.
Background technology
The piston used on available engine, has the disadvantage that 1. is bad due to the oil return effect after frizing, is easily caused
Return pressure big and make in piston cylinder to alter oil up and down big, oil firing is insufficient and affects environmental protection；2. the piston in piston pin hole
Pin easily moves axially, and makes piston pin produce CONTACT WITH FRICTION with piston cylinder endoporus hole wall, affects service life；3. piston pin hole with
Tend not between piston pin obtain good lubrication and caused quick-wearing, affect service life；4. the bottom of piston only is not
Be whole cylindrical be exactly that two nearly quarter circular arc contact with piston cylinder endoporus, the contact of whole cylindrical can make piston only work
By becoming large-sized after high-temperature heat expansion and deforming when making, and between piston cylinder endoporus, have bigger friction, affect service life,
The bad stability when contact of two nearly quarter circular arc then may make piston only work, also affects service life.
Summary of the invention
The problem existed in view of currently known technology, the purpose of this utility model is intended to provide one to alter in can reducing cylinder
Oil and prevent piston pin from moving axially, favorable working performance, the engine piston of the band Slideslip wing of length in service life.
This utility model has adopted the following technical scheme that:
With the engine piston of the Slideslip wing, including piston only, before and after piston only, side is arranged with piston pin hole,
The cylindrical of piston only is provided with piston ring groove, it is characterised in that: piston ring groove is provided with upper, middle and lower three, and lower piston annular groove has relatively
Wide groove width also arranges multiple first spill port at bottom land, lower piston annular groove diameter shrinkage part is presented herein below, the bottom of diameter shrinkage part
Pass through chamfered transition with the cylindrical of piston only, inclined-plane arranges multiple second spill port；Before and after piston only, side symmetry sets
Fluted, the face center position of groove is provided with boss, and described piston pin hole passes through from boss central authorities, the opening of piston pin hole
Inner side is provided with circlip groove, and the opening end face of piston pin hole is provided with and is partially recessed, and the degree of depth being partially recessed exceedes setting of circlip groove
Put the degree of depth；The bottom center of described groove has the outward extending Slideslip wing, and the outer surface of the Slideslip wing is arc surface, circular arc
The cylindrical of face and piston only is on the same face of cylinder.
After using technique scheme, the Advantageous Effects that this utility model realizes is: 1. piston is at engine piston
When moving up and down in cylinder, the oil-scraping ring being arranged in lower piston annular groove carries out frizing, by scrape off to piston cylinder endoporus hole wall
Oil stores in the space that undergauge cylindrical is formed, and the bottom of undergauge cylindrical is provided with inclined-plane, and inclined-plane is provided with the second spill port, in
It is that the oil scraped off can be refluxed very well by the second spill port, and owing to the bottom land of lower piston annular groove also sets up the first oil return
Hole, the many excess oil therefore scraped off reflux also by the first spill port, so oil return is effective, oil return oil pressure is little, have
Effect alters oil in reducing engine piston cylinder, improve environmental requirement；2. it is provided with circlip groove, back-up ring inside the opening of piston pin hole
Moving axially of piston pin can be limited from two ends, it is to avoid piston pin connects with the friction of piston cylinder endoporus hole wall after placing back-up ring in groove
Touch, improve service life；3. the opening end face of piston pin hole is provided with and is partially recessed, and the degree of depth being partially recessed exceedes gear
Ring recess the degree of depth is set, so, greatly facilitate the installing/dismounting of back-up ring；4. the bottom center of groove is provided with the Slideslip wing,
The arc surface of the Slideslip wing and the cylindrical of piston only are on the same face of cylinder, and so, the bottom of piston only is the most neither
Being that whole cylindrical contacts with piston cylinder endoporus, the most more than two nearly quarter circular arc contact with piston cylinder endoporus, the most both
Deformation friction can be reduced and keep again stability, favorable working performance, improve service life.
As preferably, the inner side end of described piston pin hole has inclined design, and the hole of piston pin hole in lower half
Wall was provided with oil groove along pin-and-hole axial direction.By above-mentioned design, during pistons work, the oil within piston only can be by the most oily
Groove enters in piston pin hole so that obtaining good lubrication between piston pin hole and piston pin, prevent due to lubrication bad and
Cross quick-wearing, improve service life.
As preferably, piston only arranges and has a plurality of cannelure on the cylindrical at groove position.The design of cannelure can
Improve contacting of piston only and piston cylinder endoporus, reduce temperature, improve service life.
Accompanying drawing explanation
This utility model has a drawings described below:
Fig. 1 is shape assumption diagram of the present utility model,
Fig. 2 is the axial sectional view of Fig. 1,
Fig. 3 is the A-A sectional view of Fig. 1,
Fig. 4 is the transverse sectional view of Fig. 1,
Fig. 5 is the bottom direction view of Fig. 3.
Detailed description of the invention
As it can be seen, the engine piston of the band Slideslip wing of the present utility model, including piston only 1, piston only 1
Front and back side is arranged with piston pin hole 9, and the cylindrical of piston only 1 is provided with piston ring groove, and piston ring groove is provided with upper, middle and lower three, under
Piston ring groove 2 has wider groove width and arranges eight the first spill ports 3 at bottom land, lower piston annular groove 2 reducing diameter part is presented herein below
Dividing 5, the cylindrical of the bottom of diameter shrinkage part 5 and piston only 1, by chamfered transition 6, inclined-plane 6 arranges six the second spill ports 4；
Before and after piston only 1, side is arranged with groove 7, and the face center position of groove 7 is provided with boss 8, and described piston pin hole 9 is from convex
Platform 8 central authorities pass through, and are provided with circlip groove 13 inside the opening of piston pin hole 8, and the opening end face of piston pin hole 8 is provided with localized indentation
Entering 11, be partially recessed the degree of depth of 11 and exceed the degree of depth that arranges of circlip groove 13, the inner side end of described piston pin hole 9 has in lower half
Having inclined design 14, and the hole wall of piston pin hole 9 was provided with oil groove 12 along pin-and-hole axial direction, piston only 1 arranges groove 7
A plurality of cannelure 16 is had on the cylindrical at position；The bottom center of described groove 7 has the outward extending Slideslip wing 10, side
The outer surface of sliding closure 10 is arc surface, and the cylindrical 15 of arc surface and piston only 1 is on the same face of cylinder.
Claims (3)
1. the engine piston of the band Slideslip wing, including piston only, before and after piston only, side is arranged with piston pin hole, lives
The cylindrical of plug body is provided with piston ring groove, it is characterised in that: piston ring groove is provided with upper, middle and lower three, and lower piston annular groove has wider
Groove width and at bottom land, multiple first spill port is set, lower piston annular groove diameter shrinkage part is presented herein below, the bottom of diameter shrinkage part with
The cylindrical of piston only passes through chamfered transition, and inclined-plane arranges multiple second spill port；Before and after piston only, side is arranged with
Groove, the face center position of groove is provided with boss, and described piston pin hole passes through from boss central authorities, in the opening of piston pin hole
Side is provided with circlip groove, and the opening end face of piston pin hole is provided with and is partially recessed, and the degree of depth being partially recessed exceedes the setting of circlip groove
The degree of depth；The bottom center of described groove has the outward extending Slideslip wing, and the outer surface of the Slideslip wing is arc surface, arc surface
With the cylindrical of piston only on the same face of cylinder.
2. the engine piston of the band Slideslip wing as claimed in claim 1, it is characterised in that: the medial extremity of described piston pin hole
Face has inclined design in lower half, and the hole wall of piston pin hole was provided with oil groove along pin-and-hole axial direction.
3. the engine piston of the band Slideslip wing as claimed in claim 1, it is characterised in that: piston only arranges groove position
Cylindrical on have a plurality of cannelure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620644875.XU CN205779288U (en) | 2016-06-27 | 2016-06-27 | Engine piston with the Slideslip wing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620644875.XU CN205779288U (en) | 2016-06-27 | 2016-06-27 | Engine piston with the Slideslip wing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779288U true CN205779288U (en) | 2016-12-07 |
Family
ID=58130487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620644875.XU Expired - Fee Related CN205779288U (en) | 2016-06-27 | 2016-06-27 | Engine piston with the Slideslip wing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779288U (en) |
-
2016
- 2016-06-27 CN CN201620644875.XU patent/CN205779288U/en not_active Expired - Fee Related
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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: 20161207 Termination date: 20170627 |