CN203939663U - Reciprocal compressor and wrist pin thereof - Google Patents
Reciprocal compressor and wrist pin thereof Download PDFInfo
- Publication number
- CN203939663U CN203939663U CN201420351916.7U CN201420351916U CN203939663U CN 203939663 U CN203939663 U CN 203939663U CN 201420351916 U CN201420351916 U CN 201420351916U CN 203939663 U CN203939663 U CN 203939663U
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- China
- Prior art keywords
- wrist pin
- spiral
- connecting rod
- reciprocal compressor
- spiral chute
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Abstract
The utility model discloses a kind of reciprocal compressor and wrist pin thereof.Reciprocal compressor comprises connecting rod and piston, and an end of described connecting rod is connected with described piston by wrist pin.Wherein, on one of the internal surface of end of described connecting rod and outer surface of described wrist pin, be formed with spiral chute, described spiral chute is along the contact length spiral extension of the internal surface of the end of described connecting rod and the outer surface of described wrist pin, and the described spiral fluted precession direction that described spiral chute Hand of spiral is set to be produced by the end of described connecting rod and the relative movement between described wrist pin is pointed to needs lubricated position.Structure of the present utility model is conducive to lubricant oil and enters between interlinking lever end and wrist pin, can realize sufficient lubrication, reduces friction and wear.
Description
Technical field
The utility model relates to a kind of reciprocal compressor, especially for the wrist pin of reciprocal compressor.
Background technique
In general, reciprocal compressor is to rotate by motor driving crank, and bent axle is reciprocating in cylinder by connecting rod driven plunger.Connecting rod is to be generally connected with piston by wrist pin at little head end.When compressor is in bringing onto load work time, between connecting rod small end end and wrist pin, can produce violent friction and wear, this just need to guarantee to keep between connecting rod small end end and wrist pin the supply of lubricant oil abundance.
In the prior art, cylindrical wrist pin and connecting rod small end end are Spielpassung, and lubricant oil directly enters into the gap between connecting rod small end end and wrist pin, plays lubrication.Because the matching gap of connecting rod small end end and wrist pin only has several microns, so lubricant oil is not easy to enter between connecting rod small end end and wrist pin, cause connecting rod small end end friction aggravation, compressor operating decrease in efficiency, vibration and noise increase, and reliability reduces.
Model utility content
In order to solve the problem of connecting rod small end end sufficient lubrication in prior art, the utility model provides a kind of reciprocal compressor, and it comprises connecting rod and piston, and an end of described connecting rod is connected with described piston by wrist pin.Wherein, on one of the internal surface of end of described connecting rod and outer surface of described wrist pin, be formed with spiral chute, described spiral chute is along the contact length spiral extension of the internal surface of the end of described connecting rod and the outer surface of described wrist pin, and the described spiral fluted precession direction that described spiral chute Hand of spiral is set to be produced by the end of described connecting rod and the relative movement between described wrist pin is pointed to needs lubricated position.
The utility model also provides a kind of wrist pin for reciprocal compressor, on the outer surface of described wrist pin, is formed with spiral chute.
Structure of the present utility model is conducive to lubricant oil and enters into the gap between interlinking lever end and wrist pin, can realize sufficient lubrication, reduces friction and wear.
Accompanying drawing explanation
Fig. 1 is according to the front view of a kind of wrist pin for reciprocal compressor of the present utility model.
Embodiment
Reciprocal compressor of the present utility model comprises bent axle, connecting rod and piston, and bent axle generally drives rotation by motor, and reciprocating in cylinder by connecting rod driven plunger.An end (being generally little head end) of connecting rod is connected by wrist pin with piston, and connecting rod small end end and wrist pin form Spielpassung, and lubricant oil enters gap through the top of little head end.Except structure below, reciprocal compressor of the present utility model can be identical with prior art.Technology contents for identical, repeats no more here.
Fig. 1 shows according to a kind of wrist pin for reciprocal compressor of the present utility model.As shown in the figure, wrist pin 1 is cylindrical body, is formed with spiral chute 2 on cylindrical outer surface, and spiral chute 2 is along the length direction spiral extension of wrist pin 1, preferably, and at least one week of spiral extension (at least 360 °).Fig. 1 shows a spiral chute 2, mode as an alternative, and wrist pin 1 can comprise two above spiral chutes 2.In this case, a plurality of spiral chutes can have identical helix angle, also can have different helix angles.
Mode as an alternative, the spiral chute shown in Fig. 1 can be formed on (not shown) on the internal surface of connecting rod small end end.
According to the utility model, the spiral chute precession direction that the Hand of spiral of spiral chute 2 is set to be produced by the relative movement between connecting rod small end end and wrist pin is pointed to needs lubricated position.So, when according to reciprocal compressor work of the present utility model, between wrist pin and connecting rod small end end simultaneously in relative rotation, spiral chute produces spiral motion, this spiral motion is introduced lubricant oil to need lubricated position, for example, from the top of little head end, introduces between wrist pin and connecting rod small end end, thereby form the sufficient lubrication of the two, avoided the friction and wear between wrist pin and connecting rod small end end.
It will be understood by those skilled in the art that, according to the different lubricating way between connecting rod small end end and wrist pin, spiral chute can have different Hand of spiral, and/or use different spiral chute layouts.For example, the spiral fluted sense of rotation forming on wrist pin can be contrary with the sense of rotation of motor (or bent axle), and the spiral fluted sense of rotation forming on connecting rod small end end internal surface can be identical with motor sense of rotation.Or, can form the contrary spiral chute of Hand of spiral at the two ends of the internal surface of wrist pin or interlinking lever end.
Claims (10)
1. a reciprocal compressor, it comprises connecting rod and piston, an end of described connecting rod is connected with described piston by wrist pin, it is characterized in that, on one of the internal surface of end of described connecting rod and outer surface of described wrist pin, be formed with spiral chute, described spiral chute is along the contact length spiral extension of the internal surface of the end of described connecting rod and the outer surface of described wrist pin, and the described spiral fluted precession direction that described spiral chute Hand of spiral is set to be produced by the end of described connecting rod and the relative movement between described wrist pin is pointed to needs lubricated position.
2. reciprocal compressor as claimed in claim 1, is characterized in that, described at least one week of spiral chute spiral extension.
3. reciprocal compressor as claimed in claim 1, is characterized in that, described spiral chute comprises more than two.
4. reciprocal compressor as claimed in claim 1, is characterized in that, the spiral fluted Hand of spiral forming on the internal surface of the end of described connecting rod is set to identical with motor sense of rotation.
5. reciprocal compressor as claimed in claim 1, is characterized in that, the spiral fluted Hand of spiral forming on the outer surface of described wrist pin is set to contrary with motor sense of rotation.
6. reciprocal compressor as claimed in claim 1, is characterized in that, on the two ends of one of the internal surface of end of described connecting rod and outer surface of described wrist pin, is formed with respectively the spiral chute that Hand of spiral is contrary.
7. for a wrist pin for reciprocal compressor, it is characterized in that, on the outer surface of described wrist pin, be formed with spiral chute.
8. wrist pin as claimed in claim 7, is characterized in that, described at least one week of spiral chute spiral extension.
9. wrist pin as claimed in claim 7, is characterized in that, described spiral chute comprises more than two.
10. wrist pin as claimed in claim 7, is characterized in that, on the two ends of the outer surface of described wrist pin, is formed with respectively the spiral chute that Hand of spiral is contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420351916.7U CN203939663U (en) | 2014-06-23 | 2014-06-23 | Reciprocal compressor and wrist pin thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420351916.7U CN203939663U (en) | 2014-06-23 | 2014-06-23 | Reciprocal compressor and wrist pin thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939663U true CN203939663U (en) | 2014-11-12 |
Family
ID=51858979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420351916.7U Active CN203939663U (en) | 2014-06-23 | 2014-06-23 | Reciprocal compressor and wrist pin thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939663U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804970A (en) * | 2014-12-31 | 2016-07-27 | 华域三电汽车空调有限公司 | Compressor piston |
| CN107605699A (en) * | 2017-10-11 | 2018-01-19 | 苏州昆拓热控系统股份有限公司 | Compressor |
| CN108221950A (en) * | 2018-02-02 | 2018-06-29 | 中国矿业大学 | A kind of liquid nitrogen freezer of liquid supply pipe fluting |
-
2014
- 2014-06-23 CN CN201420351916.7U patent/CN203939663U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804970A (en) * | 2014-12-31 | 2016-07-27 | 华域三电汽车空调有限公司 | Compressor piston |
| CN107605699A (en) * | 2017-10-11 | 2018-01-19 | 苏州昆拓热控系统股份有限公司 | Compressor |
| CN108221950A (en) * | 2018-02-02 | 2018-06-29 | 中国矿业大学 | A kind of liquid nitrogen freezer of liquid supply pipe fluting |
| CN108221950B (en) * | 2018-02-02 | 2020-01-14 | 中国矿业大学 | Liquid nitrogen freezer with grooved liquid supply pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 101312 No.29 Yuhua Road, zone B, Tianzhu Airport Industrial Zone, Shunyi District, Beijing Patentee after: Nedco compressor (Beijing) Co.,Ltd. Address before: 101312 No. 29, Yuhua Road, B District, Tianzhu Airport Industrial Zone, Beijing, Shunyi District Patentee before: BEIJING EMBRACO SNOWFLAKE COMPRESSOR Co.,Ltd. |