CN204692037U - A kind of air compressor connecting rod - Google Patents
A kind of air compressor connecting rod Download PDFInfo
- Publication number
- CN204692037U CN204692037U CN201520387928.XU CN201520387928U CN204692037U CN 204692037 U CN204692037 U CN 204692037U CN 201520387928 U CN201520387928 U CN 201520387928U CN 204692037 U CN204692037 U CN 204692037U
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- CN
- China
- Prior art keywords
- connecting rod
- pin part
- air compressor
- main shaft
- shaft sleeve
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- 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.)
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Abstract
The utility model discloses a kind of air compressor connecting rod, aim to provide a kind of air compressor connecting rod that can promote fastening stability, its drip irrigation device is: comprise con-rod only, the lower end of described con-rod only is provided with main shaft sleeve, described main shaft sleeve is provided with opening, described main shaft sleeve is divided into two side shaft covers by opening, each side shaft cover is equipped with projection on one end of opening, each projection is equipped with through hole, it is characterized in that: the opposing sidewalls of two projections is equipped with receiving cavity, pin part is provided with in described receiving cavity, the chamber wall of two receiving cavities and the outer side wall of pin part bonded to each other.
Description
Technical field
The utility model relates to the technical field of oilless air compressor, and more particularly, it relates to a kind of air compressor connecting rod that can promote fastening stability.
Background technique
Oil-free air compressor belongs to Miniature reciprocating piston compressor, when motor single-shaft drives compressor crank shaft to rotate, by the transmission of connecting rod, have selflubricating and do not add the piston just to-and-fro motion of any oiling agent, the swept volume be made up of cylinder inner wall, cylinder head and piston-top surface then can generating period change.When the piston of piston compressor is from cylinder head setting in motion, the swept volume in cylinder increases gradually, and at this moment, gas, namely along suction tude, is pushed suction valve open and enters cylinder, until when swept volume changes to maximum, suction valve cuts out; Piston compressor piston reverses direction motion time, in cylinder, swept volume reduces, gas pressure raise, when inner pressure of air cylinder reach and a little more than exhaust pressure time, outlet valve is opened, gas discharge cylinder, until piston movement is to limit position, exhaust valve closure.
At present, application number is the connecting rod that the Chinese patent of 201420125385.X discloses a kind of oilless air compressor, it comprises con-rod only, be located at the piston of con-rod only upper end and be located at the main shaft sleeve of con-rod only lower end, described main shaft sleeve is non-close shape and opening side is provided with two projections, described projection is provided with a through hole, this through hole is through two projections, described main shaft sleeve is provided with a connecting rod screw, this connecting rod screw makes two projections strain through described through hole, make main shaft sleeve circumference reduced, but said structure also also exists following problem in actual use:
(1) owing to carrying out connection tension by connecting rod screw between two projections, after tension, bonded to each other between two projections, can cause after having assembled, between two projections, inconsistent phenomenon occurs, still there will be between main shaft sleeve and main bearing and there is gap, cause fastening stability not high;
(2) in actual fabrication process, first an opening can be offered on main shaft sleeve, then be fixed by connecting rod screw, again boring operation is carried out to the inner ring of main shaft sleeve afterwards, and once enter into as installed process, the screwing force of connecting rod screw during screwing force and bore hole due to now connecting rod screw is inconsistent, will cause the left and right two panels main shaft sleeve discontinuity equalization be divided into by opening, and then cause the circularity of main shaft sleeve inner ring not high.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of air compressor connecting rod that can promote fastening stability.
For achieving the above object, the utility model provides following technological scheme: a kind of air compressor connecting rod, comprise con-rod only, comprise con-rod only, the lower end of described con-rod only is provided with main shaft sleeve, described main shaft sleeve is provided with opening, described main shaft sleeve is divided into two side shaft covers by opening, each side shaft cover is equipped with projection on one end of opening, each projection is equipped with through hole, the opposing sidewalls of two projections is equipped with receiving cavity, in described receiving cavity, is provided with pin part, the chamber wall of two receiving cavities and the outer side wall of pin part bonded to each other.
Preferably, the shape of described pin part is cylindrical body, and the shape of described receiving cavity is semicylinder, and the radial radius size of described pin part is greater than the radial radius size of receiving cavity.
Preferably, described through hole is between receiving cavity and main shaft sleeve inner ring.
Preferably, the periphery wall of described pin part is provided with the concentric annular groove arranged with pin part.
Preferably, the two ends of described pin part are equipped with chamfering.
Preferably, two opposing end surfaces of described pin part flush with the flat sidewall of corresponding main shaft sleeve respectively.
Compared with prior art, the beneficial effects of the utility model are: by offering receiving cavity on projection, and in receiving cavity, be provided with pin part, the chamber wall of two receiving cavities and the outer side wall of pin part bonded to each other, first, connection tension is carried out by connecting rod screw between two projections, after tension, plane is not through bonded to each other between two projections, but it is bonded to each other by the outer side wall of receiving cavity and pin part, after having assembled, be equivalent to be present in locating stud between two projections, completely avoid the drawback that can there is dislocation between two projections, fastening stability promotes further, and in actual fabrication process, by the positioning action at pin part, then be fixed by connecting rod screw, again boring operation is carried out to the inner ring of main shaft sleeve afterwards, then in as installed process, even if the screwing force of the connecting rod screw when screwing force of connecting rod screw and bore hole is inconsistent, because two side shaft covers are by the positioning action of pin part, only need ensure that connecting rod screw is in tight condition, stressed also can the guarantee of two side shaft covers is in admirable proportion, and the circularity of the inner ring of main shaft sleeve obtains very high precision all the time.
Accompanying drawing explanation
Fig. 1 is the detonation configuration schematic diagram of a kind of air compressor connecting rod of the utility model embodiment;
Fig. 2 is the mounting structure schematic diagram of a kind of air compressor connecting rod of the utility model embodiment;
Fig. 3 is the partial sectional view of a kind of air compressor connecting rod of the utility model embodiment;
Fig. 4 is the structural representation of bearing pin part in a kind of air compressor connecting rod of the utility model embodiment.
Reference character: 1, con-rod only; 2, main shaft sleeve; 21, side shaft cover; 3, opening; 4, projection; 5, through hole; 6, receiving cavity; 7, pin part; 8, annular groove; 9, chamfering; 10, connecting rod screw; 11, interior threaded hole.
Embodiment
For making the object of the utility model embodiment, technological scheme and advantage clearly, below with reference to Fig. 1 to Fig. 4 a kind of air compressor connecting rod of the utility model embodiment being done and describing clearly and completely further.Obviously, described embodiment is section Example of the present utility model, instead of whole embodiments.Based on described embodiment of the present utility model, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, belongs to the scope of the utility model protection.
A kind of air compressor connecting rod, comprise con-rod only 1, comprise con-rod only 1, the lower end of described con-rod only 1 is provided with main shaft sleeve 2, described main shaft sleeve 2 is provided with opening 3, described main shaft sleeve 2 is divided into two side shaft covers 21 by opening 3, each side shaft cover 21 is equipped with projection 4 on one end of opening 3, each projection 4 is equipped with through hole 5, the opposing sidewalls of two projections 4 is equipped with receiving cavity 6, pin part 7 is provided with in described receiving cavity 6, the chamber wall of two receiving cavities 6 and the outer side wall of pin part 7 bonded to each other, by offering receiving cavity 6 on projection 4, and in receiving cavity 6, be provided with pin part 7, the chamber wall of two receiving cavities 6 and the outer side wall of pin part 7 bonded to each other, the interior threaded hole 11 that can coordinate with connecting rod screw 10 is also provided with in through hole 5, certainly the nut coordinated with connecting rod screw 10 also can be used to lock when reality uses, first, connection tension is carried out by connecting rod screw 10 between two projections 4, after tension, plane is not through bonded to each other between two projections 4, but it is bonded to each other with the outer side wall of pin part 7 by receiving cavity 6, after having assembled, be equivalent to be present in locating stud between two projections 4, completely avoid the drawback that can there is dislocation between two projections 4, fastening stability promotes further, and in actual fabrication process, by the positioning action at pin part 7, then be fixed by connecting rod screw 10, again boring operation is carried out to the inner ring of main shaft sleeve 2 afterwards, then in as installed process, even if the screwing force of the connecting rod screw 10 when the screwing force of connecting rod screw 10 and bore hole is inconsistent, because two side shaft covers 21 are by the positioning action of pin part 7, only need ensure that connecting rod screw 10 is in tight condition, stressed also can the guarantee of two side shaft covers 21 is in admirable proportion, and the circularity of the inner ring of main shaft sleeve 2 obtains very high precision all the time.
The shape of pin part 7 is cylindrical body, the shape of described receiving cavity 6 is semicylinder, now receiving cavity 6 and cylindrical pin part 7 carry out mating reaction, when connecting rod screw 10 lock side shaft overlap 21 time, can ensure best locating effect, the radial radius size of pin part 7 is greater than the radial radius size of receiving cavity 6, even if connecting rod screw 10 is in complete locking state, also can not there is mutual conflict effect in two projections 4, ensure the positioning action between pin part 7 and receiving cavity 6.
Through hole 5 is between receiving cavity 6 and main shaft sleeve 2 inner ring, connecting rod screw 10 is through this through hole 5, then lock, tightening force is now between receiving cavity 6 and main shaft sleeve 2 inner ring too, this tightening force gives pin part 7 and the effect of main shaft sleeve 2 inner ring extruding force simultaneously, obtain according to lever principle, can reach herein, with minimum connecting rod screw 10 tightening force, give the coupling mechanism force effect that opening 3 is maximum, the specification of connecting rod screw 10 also can make land used less, further reduces the weight of whole air compressor connecting rod, promotes the output power of air compressor.
The periphery wall of pin part 7 is provided with the concentric annular groove 8 arranged with pin part 7, the groove width of this annular groove 8 is a, the length of pin part 7 is b, , and this annular groove 8 is positioned at the medium position of the circumferential side wall of pin part 7, the neutral position of this medium position and pin shaft axis, when connecting rod screw 10 can directly through in annular groove 8 through through hole 5, thus it is minimum that the distance of the shaft axis of through hole 5 and pin shaft axis can be made to ensure, now the volume of projection 4 is accomplished minimum, save fabricating cost, wherein a equals 1/3b, the effect of the empty avoiding connecting rod screw 10 not only making annular groove 8 play, and in use, even if there is rocking slightly in connecting rod screw 10, now connecting rod screw 10 also there will be on the central position of pin shaft axis for the extruding force of annular groove 8, larger destruction can not be produced to annular groove 8.
The two ends of pin part 7 are equipped with chamfering 9, the setting of chamfering 9, on the one hand, in installation process, pin shaft end is not easy to hurt installation personnel, secondly, because the end of pin part 7 is near the outer side wall in main shaft sleeve 2, in the running of whole connecting rod, pin part 7 there will be axial float slightly, even if now the end of pin part 7 arranges chamfering 9, though occur pin part 7 slightly play also can not there is serious interference with miscellaneous part.
Two opposing end surfaces of pin part 7 flush with the flat sidewall of corresponding main shaft sleeve 2 respectively, the setting flushed, effectively can utilize the space that receiving cavity 6 is limited, realize length the longizationest of pin part 7, whole pin part 7 can ensure its maximum durability degree, extends the working life of whole air compressor connecting rod.
The above is only exemplary embodiment of the present utility model, but not for limiting protection domain of the present utility model, protection domain of the present utility model is determined by appended claim.
Claims (6)
1. an air compressor connecting rod, comprise con-rod only, the lower end of described con-rod only is provided with main shaft sleeve, described main shaft sleeve is provided with opening, and described main shaft sleeve is divided into two side shaft covers by opening, and each side shaft cover is equipped with projection on one end of opening, each projection is equipped with through hole, it is characterized in that: the opposing sidewalls of two projections is equipped with receiving cavity, in described receiving cavity, be provided with pin part, the chamber wall of two receiving cavities and the outer side wall of pin part bonded to each other.
2. a kind of air compressor connecting rod according to claim 1, is characterized in that: the shape of described pin part is cylindrical body, and the shape of described receiving cavity is semicylinder, and the radial radius size of described pin part is greater than the radial radius size of receiving cavity.
3. a kind of air compressor connecting rod according to claim 2, is characterized in that: described through hole is between receiving cavity and main shaft sleeve inner ring.
4. a kind of air compressor connecting rod according to claim 2, is characterized in that: the periphery wall of described pin part is provided with the concentric annular groove arranged with pin part.
5. a kind of air compressor connecting rod according to claim 4, is characterized in that: the two ends of described pin part are equipped with chamfering.
6. a kind of air compressor connecting rod according to claim 4, is characterized in that: two opposing end surfaces of described pin part flush with the flat sidewall of corresponding main shaft sleeve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387928.XU CN204692037U (en) | 2015-06-06 | 2015-06-06 | A kind of air compressor connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387928.XU CN204692037U (en) | 2015-06-06 | 2015-06-06 | A kind of air compressor connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204692037U true CN204692037U (en) | 2015-10-07 |
Family
ID=54232338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520387928.XU Expired - Fee Related CN204692037U (en) | 2015-06-06 | 2015-06-06 | A kind of air compressor connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204692037U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624933A (en) * | 2016-04-05 | 2016-06-01 | 杰克缝纫机股份有限公司 | Feeding tooth lifting fork for sewing machine |
-
2015
- 2015-06-06 CN CN201520387928.XU patent/CN204692037U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624933A (en) * | 2016-04-05 | 2016-06-01 | 杰克缝纫机股份有限公司 | Feeding tooth lifting fork for sewing machine |
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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: 20151007 Termination date: 20160606 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |