CN202215476U - Eccentric shaft sleeve with lubricating structure - Google Patents
Eccentric shaft sleeve with lubricating structure Download PDFInfo
- Publication number
- CN202215476U CN202215476U CN2011202715250U CN201120271525U CN202215476U CN 202215476 U CN202215476 U CN 202215476U CN 2011202715250 U CN2011202715250 U CN 2011202715250U CN 201120271525 U CN201120271525 U CN 201120271525U CN 202215476 U CN202215476 U CN 202215476U
- Authority
- CN
- China
- Prior art keywords
- excentric sleeve
- eccentric pin
- crankshaft eccentric
- shaft sleeve
- eccentric shaft
- 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 - Lifetime
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Abstract
The utility model relates to an eccentric shaft sleeve with a lubrication structure. A kidney-shaped groove hole matched with a crankshaft eccentric pin is arranged in the center of the eccentric shaft sleeve, the crankshaft eccentric pin penetrates into the eccentric shaft sleeve from the kidney-shaped groove hole, and a flow-through groove is arranged at one end of the outer circle lateral wall of the eccentric shaft sleeve close to the end where the crankshaft eccentric pin penetrates in. Compared with the prior art, the eccentric shaft sleeve can provides oil for a crankshaft eccentric pin friction pair of the eccentric shaft sleeve, reduces temperature of the surrounding environment of the friction pair and prevents carbonization of refrigerating machine oil.
Description
Technical field
The utility model relates to a kind of excentric sleeve, especially relates to a kind of excentric sleeve that has lubricating structure.
Background technique
Adopt in the market in the electronic horizontal type scroll compressor of eccentric shaft shell type radial compliance structure, the assembly structure of its excentric sleeve is as shown in Figure 1, and 1 is excentric sleeve among the figure, and 2 is the crankshaft eccentric pin, and 4 is bent axle, and 6 are moving scroll wheel hub, and 7 are moving scroll.The kidney slot borehole jack of excentric sleeve is on the crankshaft eccentric pin, and cylindrical embeds in the bearing in the moving scroll wheel hub.The moment of torsion of bent axle is passed to moving scroll through excentric sleeve and bearing, and it is rotated; The kidney slot hole length of excentric sleeve can be free to slide along crankshaft eccentric pin tangent plane greater than the length of crankshaft eccentric pin.There is machining error on the orbiting and fixed scroll surface; Perhaps liquid hammer, foreign matter get into, and when these abnormal conditions took place, the orbiting and fixed scroll denticle sidewall contact points place can produce stressed unusually; Moving like this scroll just can be passed through excentric sleeve; Move generation along crankshaft eccentric pin tangent plane direction and dodge, realize radial compliance, protection scroll denticle.
In traditional horizontal type scroll compressor; Inside, excentric sleeve kidney slot hole is a sealed cavity; Lack Liquid Flow and oil lubrication; Thereby cause the problem of two aspects below excentric sleeve-crankshaft eccentric pin friction pair, influence the reliability of compressor operating: 1) local temperature constantly raises, and finally causes the refrigerator oil carbonization; 2) friction pair oil starvation directly contacts the mill metal surface, increases wearing and tearing.
The model utility content
The purpose of the utility model is exactly for the defective that overcomes above-mentioned existing technology existence a kind of excentric sleeve-crankshaft eccentric pin friction pair fuel feeding that can be to be provided, and reduces near the temperature of this friction pair, prevents the excentric sleeve that lubricating structure is arranged of refrigerator oil carbonization.
The purpose of the utility model can realize through following technological scheme: a kind of excentric sleeve that has lubricating structure; These excentric sleeve central authorities are provided with the kidney slot hole that cooperates with the crankshaft eccentric pin; The crankshaft eccentric pin stretches into excentric sleeve from said kidney slot hole; It is characterized in that, have a through-flow groove on the outer side wall of described excentric sleeve near crankshaft eccentric pin inserting end.
The straight trough of described through-flow groove for offering along the excentric sleeve diametric(al).
Described kidney slot hole minor axis axis is an X-X ' axle; The angle of the central axis of described through-flow groove and X-X ' axle is θ; The straight line at the described excentric sleeve center of circle and bent axle circle center line connecting place is a Y-Y ' axle; The angle of described crankshaft eccentric pin long axis ray and Y-Y ' axle is β, and θ and β satisfy β-pi/2≤θ≤β+pi/2.
Compared with prior art; The utility model has through-flow groove on excentric sleeve; Refrigerator oil and cryogenic gas can get into from this through-flow groove, and flow out through the matching gap of excentric sleeve and crankshaft eccentric pin, have solved the not enough problem of excentric sleeve-crankshaft eccentric pin friction pair fuel feeding; And reduce near the influence of heat accumulation phenomenon this friction pair, prevent the refrigerator oil carbonization.
Description of drawings
Fig. 1 is the assembly structure schematic representation of traditional excentric sleeve;
Fig. 2 is the structural representation of the utility model;
Fig. 3 is inserted in the structural representation of bent axle for the utility model;
Fig. 4 is the assembly structure schematic representation of the utility model;
Fig. 5 is the principle schematic of the utility model;
Fig. 6 is refrigerator oil and cryogenic gas flow path schematic representation in excentric sleeve;
Fig. 7 is the through-flow angle of the v-groove schematic representation of the utility model;
Fig. 8 is the crankshaft eccentric pin angle schematic representation of the utility model;
Fig. 9 is the through-flow groove best angle schematic representation of the utility model;
Figure 10 is the through-flow groove critical angle schematic representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
As shown in Figures 2 and 3, excentric sleeve 1 central authorities are provided with the kidney slot hole 5 that cooperates with crankshaft eccentric pin 2, and the crankshaft eccentric pin 2 that is located at bent axle 4 front ends stretches into excentric sleeve 1 from kidney slot hole 5.The straight trough of through-flow groove 3 for offering along excentric sleeve 1 diametric(al) is located on the outer side wall of excentric sleeve 1 near crankshaft eccentric pin 2 inserting ends.
As shown in Figure 4; Excentric sleeve 1 turns clockwise with the angular velocity of w; Dash area A is the scope that the movement locus of excentric sleeve 1 covers, through-flow groove 3 constantly will be positioned at through-flow groove 3 the place aheads, excentric sleeve 1 movement locus line scope with refrigerator oil and cryogenic gas suck.
As shown in Figure 5, excentric sleeve 1 is after assembling, and through-flow groove 3 exposes outside moving scroll wheel hub 6.As shown in Figure 6; Refrigerator oil and cryogenic gas get in the excentric sleeve 1 from through-flow groove 3; Flow out through the matching gap between excentric sleeve 1 and the crankshaft eccentric pin 2 then; Solve excentric sleeve 1 and the not enough problem of crankshaft eccentric pin 2 friction pair fuel feeding, and reduced near the influence of the heat accumulation phenomenon of this friction pair, prevented the refrigerator oil carbonization.
As shown in Figure 7, Y-Y ' axis is the straight line at circle center line connecting place of the center of circle and the excentric sleeve 1 of bent axle 4, and the angle of crankshaft eccentric pin 2 long axis ray and Y-Y ' axis is β.As shown in Figure 8, X-X ' axis is kidney slot hole 5 minor axis axis, and the angle of through-flow groove 3 central axis and X-X ' axis is θ.
As shown in Figure 9, Oa is the center of circle (also being the center of crankshaft eccentric pin 2 simultaneously) of excentric sleeve 1, and Ob is the center of bent axle 4, and Oa and the Ob distance on Y-Y ' axle direction promptly is an offset.R is the radius of excentric sleeve 1, and curve C is the movement locus of any 1 M on excentric sleeve 1 outer side wall, and L1 is the tangent line of path curves C, and L2 is the line of M point and Ob, and ∠ a is the angle of L1, L2.θ=β is the best angle of through-flow groove 1, and this moment, ∠ a obtained maximum value (maximum value is the obtuse angle, about 115 °), and refrigerator oil and cryogenic gas flow into excentric sleeve 1 the most easily.
Shown in figure 10, θ=β+pi/2 or θ=β-pi/2 is the critical angle that refrigerator oil and cryogenic gas just can flow into excentric sleeve 1 from through-flow groove 3, and this moment, ∠ a was 90 °, and all the other are with embodiment 1.
Claims (3)
1. excentric sleeve that has lubricating structure; These excentric sleeve central authorities are provided with the kidney slot hole that cooperates with the crankshaft eccentric pin; The crankshaft eccentric pin stretches into excentric sleeve from said kidney slot hole; It is characterized in that, have a through-flow groove on the outer side wall of described excentric sleeve near crankshaft eccentric pin inserting end.
2. a kind of excentric sleeve that has lubricating structure according to claim 1 is characterized in that, the straight trough of described circulation groove for offering along the excentric sleeve diametric(al).
3. a kind of excentric sleeve that has lubricating structure according to claim 1; It is characterized in that; Described kidney slot hole minor axis axis is an X-X ' axle, and the angle of the central axis of described through-flow groove and X-X ' axle is θ, and the straight line at the described excentric sleeve center of circle and bent axle circle center line connecting place is a Y-Y ' axle; The angle of described crankshaft eccentric pin long axis ray and Y-Y ' axle is β, and θ and β satisfy β-pi/2≤θ≤β+pi/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202715250U CN202215476U (en) | 2011-07-28 | 2011-07-28 | Eccentric shaft sleeve with lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202715250U CN202215476U (en) | 2011-07-28 | 2011-07-28 | Eccentric shaft sleeve with lubricating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215476U true CN202215476U (en) | 2012-05-09 |
Family
ID=46014734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202715250U Expired - Lifetime CN202215476U (en) | 2011-07-28 | 2011-07-28 | Eccentric shaft sleeve with lubricating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190509A1 (en) * | 2016-05-05 | 2017-11-09 | 刘俊峰 | Stably connected wheel eccentric shaft assembly |
| CN110761967A (en) * | 2018-07-27 | 2020-02-07 | 广东美芝制冷设备有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
-
2011
- 2011-07-28 CN CN2011202715250U patent/CN202215476U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190509A1 (en) * | 2016-05-05 | 2017-11-09 | 刘俊峰 | Stably connected wheel eccentric shaft assembly |
| CN110761967A (en) * | 2018-07-27 | 2020-02-07 | 广东美芝制冷设备有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |
|
| CX01 | Expiry of patent term |