CN105386890A - Piston pin - Google Patents
Piston pin Download PDFInfo
- Publication number
- CN105386890A CN105386890A CN201510916078.2A CN201510916078A CN105386890A CN 105386890 A CN105386890 A CN 105386890A CN 201510916078 A CN201510916078 A CN 201510916078A CN 105386890 A CN105386890 A CN 105386890A
- Authority
- CN
- China
- Prior art keywords
- shank
- oil groove
- wrist pin
- pin
- oil grooves
- 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.)
- Pending
Links
- 210000000707 wrist Anatomy 0.000 claims description 24
- 239000000463 material Substances 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 5
- 239000000470 constituent Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a piston pin. The piston pin comprises a pin body and oil grooves; at least two oil grooves are uniformly formed in the side wall of the pin body in the circumferential direction; the length direction of the oil grooves is consistent with the axial direction of the pin body. By means of the oil grooves formed in the pin body, the lubrication capacity of the piston pin can be greatly enhanced, and the abrasion resistance of the piston pin is improved. In addition, the oil grooves are convenient to machine, material consumption is reduced, the weight is decreased, and the cost is reduced.
Description
Technical field
The present invention relates to piston field, particularly a kind of wrist pin.
Background technique
Piston connecting rod unit is a vitals in diesel engine, the quality of its assembly quality, and on the sealing of cylinder operation with there is direct impact working life, connecting rod needs to be connected with piston by wrist pin.In the ordinary course of things, the rigidity of wrist pin is particularly important, if wrist pin occurs bending and deformation, piston pin boss may be made to damage.But wrist pin, except must having enough rigidity, intensity and wear resistance, also must have certain lubrication environment, pin and pin-and-hole should have suitable matching gap and good surface quality.At present, wrist pin bears very large periodic shock load under the high temperature conditions, and due to wrist pin pendulum angle in pin-and-hole little, be difficult to form lubricant film, thus cause lubricating condition poor.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of wrist pin, thus overcome and be existingly difficult to form the lubricant film shortcoming that causes lubricating condition poor because wrist pin pendulum angle in pin-and-hole does not cause very much.
For achieving the above object, the invention provides a kind of wrist pin, wherein, comprising: shank; And oil groove, at least two these oil grooves are circumferentially arranged on the sidewall of described shank equably, the length direction of described oil groove and the axial consistent of described shank.
Preferably, in technique scheme, four described oil grooves are circumferentially arranged on the sidewall of described shank equably.
Preferably, in technique scheme, described oil groove is arranged at the middle part of the sidewall of described shank.
Preferably, in technique scheme, the width of described oil groove is not more than 1.5mm.
Preferably, in technique scheme, the degree of depth of described oil groove is not more than 1mm.
Compared with prior art, the present invention has following beneficial effect:
The present invention, by being provided with oil groove on shank, greatly can strengthening the lubricating ability of wrist pin, improve its wear resistance.And oil groove is easy to process, decrease material, alleviate weight, reduce cost.
Accompanying drawing explanation
Fig. 1 is the structural representation according to inventive piston pin.
Fig. 2 is to sectional view according to the A-A of Fig. 1 of the present invention.
Fig. 3 is the structural representation according to connecting rod.
Fig. 4 carries out according to connecting rod and piston the structural representation that is connected by wrist pin of the present invention.
Main Reference Numerals illustrates:
1-shank, 11-oil groove; 2-connecting rod; 3-piston; 4-lining, 41-lining oil groove; .
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
Fig. 1 to Fig. 2 shows the structural representation of wrist pin according to the preferred embodiment of the present invention.This wrist pin comprises shank 1 and oil groove 11, and at least two oil grooves 11 are circumferentially arranged on the sidewall of shank 1 equably, and the length direction of oil groove 11 and the axial consistent of shank 1, oil groove 11 two ends are along its length closed.Preferably, one has four oil grooves 11, and these four oil grooves 11 are circumferentially arranged on the sidewall of shank 1 equably.Further preferably, oil groove 11 is arranged at the middle part of the sidewall of shank 1, and it is symmetrical along axis.Again further preferably, the width of oil groove is not more than 1.5mm, and the degree of depth of oil groove is not more than 1mm, thus while shank 1 organic oil can be made to carry out lubricating, still can ensure the intensity of shank 1, to ensure the working life of shank 1.
As shown in Figure 3, the attachment hole of the little head end of connecting rod 2 is provided with lining 4, lining oil groove 41 is provided with in lining 4, as shown in Figure 4, connecting rod 2 is identical with conventional Placement by the connection of wrist pin of the present invention with piston 3, shank 1 is sheathed in lining 4, and oil groove 11 is corresponding with the lining oil groove 41 of lining 4, and the two ends of shank 1 are respectively fixed on by jump ring on the skirt section of piston 3.Piston 3 is in movement process, a machine oil part is stored in the lining oil groove 41 of lining 4, a part is stored in the oil groove 11 of shank 1, these machine oil reduce the friction between village's cover 4 and shank 1, thus reduce the wearing and tearing of shank 1, thus improve the lubricating ability of wrist pin, make wrist pin while meeting strength and stiffness requirement, turn improve the stability of pistons work.This structure can meet intensity needs, saves material, reduces weight, can improve again rigidity and the wear resistance of wrist pin.And its structure is simple, easily assembles.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (5)
1. a wrist pin, is characterized in that, comprising:
Shank; And
Oil groove, at least two these oil grooves are circumferentially arranged on the sidewall of described shank equably, the length direction of described oil groove and the axial consistent of described shank.
2. wrist pin according to claim 1, is characterized in that, four described oil grooves are circumferentially arranged on the sidewall of described shank equably.
3. wrist pin according to claim 1, is characterized in that, described oil groove is arranged at the middle part of the sidewall of described shank.
4. wrist pin according to claim 3, is characterized in that, the width of described oil groove is not more than 1.5mm.
5. wrist pin according to claim 4, is characterized in that, the degree of depth of described oil groove is not more than 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916078.2A CN105386890A (en) | 2015-12-10 | 2015-12-10 | Piston pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916078.2A CN105386890A (en) | 2015-12-10 | 2015-12-10 | Piston pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105386890A true CN105386890A (en) | 2016-03-09 |
Family
ID=55419548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510916078.2A Pending CN105386890A (en) | 2015-12-10 | 2015-12-10 | Piston pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105386890A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03953A (en) * | 1989-05-29 | 1991-01-07 | Yamaha Motor Co Ltd | Lubrication structure of piston pin for internal combustion engine |
| KR20060009192A (en) * | 2004-07-21 | 2006-01-31 | 현대자동차주식회사 | Piston pin |
| JP2007146808A (en) * | 2005-11-30 | 2007-06-14 | Toyota Motor Corp | Piston pin and piston assembly |
| CN201546797U (en) * | 2009-12-02 | 2010-08-11 | 广西玉柴机器股份有限公司 | Piston cooling structure |
| CN201991730U (en) * | 2011-01-28 | 2011-09-28 | 温岭市中亚齿轮箱有限公司 | Piston pin of refrigeration compressor |
| CN204099025U (en) * | 2014-07-29 | 2015-01-14 | 宁波吉利罗佑发动机零部件有限公司 | A kind of engine piston cooling structure |
| CN104487686A (en) * | 2012-06-04 | 2015-04-01 | 康珀伦塔芬兰有限公司 | Piston for internal combustion engine |
| CN204784666U (en) * | 2015-05-25 | 2015-11-18 | 华晨汽车集团控股有限公司 | Take piston pin of oil groove |
| CN205154425U (en) * | 2015-12-10 | 2016-04-13 | 广西玉柴机器股份有限公司 | Wrist pin |
-
2015
- 2015-12-10 CN CN201510916078.2A patent/CN105386890A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03953A (en) * | 1989-05-29 | 1991-01-07 | Yamaha Motor Co Ltd | Lubrication structure of piston pin for internal combustion engine |
| KR20060009192A (en) * | 2004-07-21 | 2006-01-31 | 현대자동차주식회사 | Piston pin |
| JP2007146808A (en) * | 2005-11-30 | 2007-06-14 | Toyota Motor Corp | Piston pin and piston assembly |
| CN201546797U (en) * | 2009-12-02 | 2010-08-11 | 广西玉柴机器股份有限公司 | Piston cooling structure |
| CN201991730U (en) * | 2011-01-28 | 2011-09-28 | 温岭市中亚齿轮箱有限公司 | Piston pin of refrigeration compressor |
| CN104487686A (en) * | 2012-06-04 | 2015-04-01 | 康珀伦塔芬兰有限公司 | Piston for internal combustion engine |
| CN204099025U (en) * | 2014-07-29 | 2015-01-14 | 宁波吉利罗佑发动机零部件有限公司 | A kind of engine piston cooling structure |
| CN204784666U (en) * | 2015-05-25 | 2015-11-18 | 华晨汽车集团控股有限公司 | Take piston pin of oil groove |
| CN205154425U (en) * | 2015-12-10 | 2016-04-13 | 广西玉柴机器股份有限公司 | Wrist pin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160309 |
|
| WD01 | Invention patent application deemed withdrawn after publication |