CN205779293U - With the engine piston that piston ring is circumferentially positioned - Google Patents
With the engine piston that piston ring is circumferentially positioned Download PDFInfo
- Publication number
- CN205779293U CN205779293U CN201620645334.9U CN201620645334U CN205779293U CN 205779293 U CN205779293 U CN 205779293U CN 201620645334 U CN201620645334 U CN 201620645334U CN 205779293 U CN205779293 U CN 205779293U
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- CN
- China
- Prior art keywords
- piston
- groove
- alignment pin
- annular groove
- 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 discloses the engine piston that band piston ring is circumferentially positioned, including cylindrical piston only, piston only be symmetrically arranged on two 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 and lower two, upper piston annular groove is fixed with upper alignment pin near the position of upside trough rim, the lower half cylindrical of upper alignment pin is positioned at upper piston annular groove groove, lower piston annular groove is fixed with lower alignment pin near the position of upside trough rim, the lower half cylindrical of lower alignment pin is positioned at lower piston annular groove groove, up and down alignment pin staggers setting in circumferential direction；Being provided with circlip groove inside the opening of described piston pin hole, the opening end face of piston pin hole is provided with being partially recessed of left and right, and what the degree of depth that left and right is partially recessed exceeded circlip groove arranges the degree of depth.The piston ring that this utility model is installed in can preventing piston ring groove operationally produces circumferentially displaced and prevents piston pin from moving axially, it is ensured that the more reliable work of piston, improves service life.
Description
Technical field
This utility model relates to a kind of piston for motor car engine.
Background technology
The piston used on available engine, the piston ring installed in having the disadvantage that 1. piston ring grooves is operationally
Can produce circumferentially displaced, if producing at the Guan Bi of circumferentially displaced back piston ring recessed alignment the with piston cylinder endoporus hole wall, that
Piston ring is easy for being scratched to be taken away or heavy wear, works unreliable, affects service life；2. the work in piston pin hole
Plug pin easily moves axially, and makes piston pin produce CONTACT WITH FRICTION with piston cylinder endoporus hole wall, affects service life；3. on piston
Owing to promoting center with piston centre on the same axis during lower promotion, therefore during piston up-down, easily occur that both sides are shaken,
Increase cylinder body abrasion, affect service life；4. tend not between piston pin hole and piston pin obtain good lubrication and caused
Quick-wearing, affects service life；The most cylindrical piston only, by becoming large-sized after high-temperature heat expansion and deforming during work, with
Have bigger friction between piston cylinder endoporus, affect 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 can prevent piston ring
The piston ring installed in groove operationally produces circumferentially displaced and prevents piston pin from moving axially, it is ensured that more reliable work, improves
The engine piston that the band piston ring in service life is circumferentially positioned.
This utility model has adopted the following technical scheme that:
With the engine piston that piston ring is circumferentially positioned, including cylindrical piston only, the lateral symmetry of piston only
Being provided 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 and lower two, upper work
Plug ring groove is fixed with upper alignment pin near the position of upside trough rim, and the lower half cylindrical of upper alignment pin is positioned at upper piston annular groove groove
In, lower piston annular groove is fixed with lower alignment pin near the position of upside trough rim, and the lower half cylindrical of lower alignment pin is positioned at lower piston
In annular groove groove, upper and lower alignment pin staggers setting in circumferential direction；It is provided with circlip groove inside the opening of described piston pin hole, lives
The opening end face in plug pin hole is provided with being partially recessed of left and right, and what the degree of depth that left and right is partially recessed exceeded circlip groove arranges the degree of depth.
After using technique scheme, the Advantageous Effects that this utility model realizes is: 1. it is fixed to be provided with in piston ring groove
Position pin, at the Guan Bi of the piston ring that alignment pin is installed in just can being stuck in piston ring groove, has thus carried out week to piston ring
To spacing, thus thoroughly prevent piston ring operationally circumferentially displaced, it is ensured that pistons work is reliable, increases the service life；
2. it is provided with circlip groove inside the opening of piston pin hole, the axial of piston pin after placing back-up ring in circlip groove, can be limited from two ends
Mobile, it is to avoid piston pin and the CONTACT WITH FRICTION of piston cylinder endoporus hole wall, improve service life；3. the opening end of piston pin hole
Face is provided with being partially recessed of left and right, and the degree of depth being partially recessed exceed circlip groove the degree of depth is set, so, can be the most square
Just the installing/dismounting of back-up ring.
As preferably, the axis centre of the center deviation piston only of described piston pin hole is arranged.By above-mentioned design, can
Making the promotion center of piston with piston only center the most on the same axis, more conducively the promotion of piston is without occurring that both sides are trembled
Dynamic, improve service life.
As preferably, the bottom hole wall of described piston pin hole is provided with the through aperture inside by piston pin hole Yu piston only
Connection.By above-mentioned design, during pistons work, the oil within piston only can enter in piston pin hole by through aperture,
So that obtaining good lubrication between piston pin hole and piston pin, preventing from crossing quick-wearing owing to lubricating bad, improving and use the longevity
Life.
As preferably, the cylindrical of the piston only below lower piston annular groove has the taper design that two broad in the middle is little, in
Between a diameter of Dmm, a diameter of D-0.08mm of top, a diameter of D-0.01mm of following.After above-mentioned design, cylindrical piston
Although body is operationally become big by size after high-temperature heat expansion but reserves deformation space, reduce rubbing between piston cylinder endoporus
Wipe, 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 B-B sectional view of Fig. 1,
Fig. 4 is the bottom direction view of Fig. 3,
Fig. 5 is the A-A sectional view of Fig. 1.
Detailed description of the invention
As it can be seen, the engine piston that band piston ring of the present utility model is circumferentially positioned, including cylindrical piston originally
Body 1, piston only 1 be symmetrically arranged on two with piston pin hole 7, in the axis of the center of described piston pin hole 7 deviation piston only 1
The heart is arranged, and the cylindrical of piston only 1 is provided with piston ring groove, and piston ring groove is provided with upper and lower two, and upper piston annular groove 2 is near upper side channel
The position on limit is fixed with alignment pin 4, and the lower half cylindrical of upper alignment pin 4 is positioned at upper piston annular groove 2 groove, lower piston annular groove 3
Being fixed with lower alignment pin 5 near the position of upside trough rim, the lower half cylindrical of lower alignment pin 5 is positioned at lower piston annular groove 3 groove, on
Lower alignment pin staggers setting in circumferential direction；Circlip groove 8 it is provided with inside the opening of described piston pin hole 7, piston pin hole 7
What opening end face was provided with left and right is partially recessed 6, and left and right is partially recessed the degree of depth of 6 and exceedes the degree of depth that arranges of circlip groove 8, described work
The bottom hole wall in plug pin hole 7 is provided with through aperture 9 and is connected the inside of piston pin hole 7 with piston only 1, lower piston annular groove 3 with
Under the cylindrical of piston only 1 there is the taper design that two broad in the middle is little, as middle a diameter of Dmm, a diameter of D-of top
0.08mm, a diameter of D-0.01mm of following.
Claims (4)
1. the engine piston that band piston ring is circumferentially positioned, including cylindrical piston only, the lateral symmetry of piston only sets
Having 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 and lower two, upper piston
Annular groove is fixed with upper alignment pin near the position of upside trough rim, and the lower half cylindrical of upper alignment pin is positioned at upper piston annular groove groove,
Lower piston annular groove is fixed with lower alignment pin near the position of upside trough rim, and the lower half cylindrical of lower alignment pin is positioned at lower piston annular groove
In groove, upper and lower alignment pin staggers setting in circumferential direction；Circlip groove, piston pin it is provided with inside the opening of described piston pin hole
The opening end face in hole is provided with being partially recessed of left and right, and what the degree of depth that left and right is partially recessed exceeded circlip groove arranges the degree of depth.
2. the engine piston that band piston ring as claimed in claim 1 is circumferentially positioned, it is characterised in that: described piston pin hole
The axis centre of center deviation piston only is arranged.
3. the engine piston that band piston ring as claimed in claim 1 is circumferentially positioned, it is characterised in that: described piston pin hole
Bottom hole wall is provided with through aperture and is connected with the inside of piston only by piston pin hole.
4. the engine piston that band piston ring as claimed in claim 1 is circumferentially positioned, it is characterised in that: below lower piston annular groove
The cylindrical of piston only there is the taper design that two broad in the middle is little, mid diameter is Dmm, a diameter of D-0.08mm of top,
The a diameter of D-0.01mm of following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620645334.9U CN205779293U (en) | 2016-06-27 | 2016-06-27 | With the engine piston that piston ring is circumferentially positioned |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620645334.9U CN205779293U (en) | 2016-06-27 | 2016-06-27 | With the engine piston that piston ring is circumferentially positioned |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779293U true CN205779293U (en) | 2016-12-07 |
Family
ID=58130983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620645334.9U Expired - Fee Related CN205779293U (en) | 2016-06-27 | 2016-06-27 | With the engine piston that piston ring is circumferentially positioned |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779293U (en) |
-
2016
- 2016-06-27 CN CN201620645334.9U patent/CN205779293U/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 |
Granted publication date: 20161207 Termination date: 20170627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |