CN103629076A - Piston pin, piston and piston group of compressor and assembly method of piston pin, piston and piston group - Google Patents
Piston pin, piston and piston group of compressor and assembly method of piston pin, piston and piston group Download PDFInfo
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- CN103629076A CN103629076A CN201310477373.3A CN201310477373A CN103629076A CN 103629076 A CN103629076 A CN 103629076A CN 201310477373 A CN201310477373 A CN 201310477373A CN 103629076 A CN103629076 A CN 103629076A
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Abstract
The invention relates to a piston, a piston pin, a piston group, an assembly method of the piston, the piston pin and the piston group, and a compressor comprising the piston group. The end portion of the piston pin is provided with a flat boss. The boss comprises a circular arc surface and at least one side plane, wherein the circular arc surface is connected with a cylinder of the piston pin, and the side plane is connected with the end face of a shaft of the piston pin. The boss is provided with an elastic pin hole which penetrates through the side plane of the boss. The piston is a cavity with one open end and the other closed end, wherein the piston is provided with a piston pin hole, the open end is provided with a gap corresponding to the boss of the piston pin, the gap extends from the open end to be communicated with the piston pin hole, and a body part close to the closed end is also provided with an elastic pin hole. By the adoption of the technical scheme, due to the fact that all the holes are visible when the piston group is assembled, the technical problems that alignment is complex and operation is difficult in the existing assembly process are solved.
Description
Technical field
The present invention relates to compressor field, the compressor that particularly relates to a kind of piston, wrist pin, piston assembly and comprise this piston assembly.
Background technique
Current existing piston compressor, such as a kind of freezer compressor is in assembly process, piston, wrist pin, connecting rod and resilient key assembling adopt manual assembly, the main difficulty of this link is: 1) piston pin and piston hole quality of fit is higher, therefore when wrist pin inserts the piston pin hole on piston, must guarantee piston pin hole and the accurate contraposition of connecting rod aperture, guarantee wrist pin can insert smoothly.And connecting rod aperture is positioned in piston cavity, therefore stop contraposition sight line, troublesome poeration, and operating space is very little.2) after having inserted, for guaranteeing that elasticity pin-and-hole on piston and the elasticity pin-and-hole on wrist pin align completely, need to manually align, but because the elasticity pin-and-hole on wrist pin has sunk in piston pin hole, bit manipulation is bothered, as occurred, the resilient key hole site on wrist pin is excessively dark, wrist pin must be ticked and reinstalled, therefore, in compressor piston assembling, there is twice contraposition, and during twice contraposition, for assembling from member, all being in sight line works under being blocked, need operator to operate with feel and experience, exist manufacturing efficiency low, cost is high, be difficult to realize the problem of assembly automation.
Summary of the invention
Order of the present invention is to provide a kind of compressor piston pin, the unworkable technical problem because producing beyond the visual line of sight in operator when piston is installed contraposition while assembling to solve prior art.
In order to solve above technical problem, the technological scheme that the present invention takes is:
A kind of compressor piston pin, for matching with compressor piston, outstanding boss is extended for inside contracting from wrist pin cylinder end face in one end of described wrist pin, described boss comprises the arc surface and at least one side plane being connected with gudgeon pin shaft end face being connected with wrist pin cylinder, on described boss, be also provided with elasticity pin-and-hole, the side plane of boss runs through setting described in described resilient key aperture.
Preferably, the side plane that described gudgeon pin shaft end face is connected is two, and two described side planes arrange with gudgeon pin shaft end face is vertical respectively.
Two described side planes are symmetrical arranged along the axle central plane of wrist pin.
The corresponding girth of arc surface of described boss is greater than the corresponding arc length of described side plane, and the arc surface of described boss coordinates with the piston pin hole on piston after Piston assembling completes.
The other end of described wrist pin is also symmetrical arranged and promisingly from wrist pin cylinder end face, inside contracts and extend outstanding boss.
Another object of the present invention is the compressor piston that also provides a kind of and above-mentioned wrist pin to match, described piston is the cavity of one end open one end sealing, on described piston, establish upper piston pin-and-hole, in described open end, be provided with the breach corresponding with described wrist pin boss, described breach extends to piston pin hole and is communicated with from described open end, in the entity part of described closed end, is also provided with elasticity pin-and-hole.
Described breach is straight cut that upper and lower opening width is equal or is upper and lower opening width trapezoidal cut not etc.
Described gap width is half of wrist pin diameter.
Another object of the present invention is a kind of compressor piston assembly, comprise connecting rod and resilient key, compressor piston pin and the piston mating with it, described connecting rod is provided with connecting rod aperture, after installation, described connecting rod aperture and piston pin hole align up and down, and described wrist pin is positioned at described connecting rod aperture, and described resilient key runs through two side planes of piston boss and coordinates with the elasticity pin-and-hole on piston.
A further object of the present invention is to provide a kind of compressor, and described compressor comprises above-mentioned compressor piston assembly.
The present invention also aims to provide a kind of assembly method of compressor piston assembly, for realizing the technological scheme that this goal of the invention takes, be:
Described compressor piston assembly comprises that connecting rod and resilient key, described connecting rod are provided with connecting rod aperture, also comprises compressor piston pin as above and the piston mating with it, and the assembly method of described compressor piston assembly comprises the following steps:
Steps A: wrist pin is put into connecting rod aperture;
Step B: the first contraposition step, the side plane that wrist pin boss is connected with gudgeon pin shaft end face and the breach contraposition of piston, the connecting rod that has made to pack into wrist pin enters in piston until connecting rod puts in place in piston along described breach;
Step C: the second contraposition step, by wrist pin 90-degree rotation, until the elasticity pin-and-hole laying respectively in wrist pin boss and piston closes end entity part aligns;
Step D: resilient key is run through through the elasticity pin-and-hole on wrist pin until the elasticity pin-and-hole of piston entity part is fixed on piston wrist pin.
Preferably, in described steps A and step B, can also be:
Steps A ': wrist pin is not first put into connecting rod aperture, but first connecting rod is packed in piston cavity until connecting rod puts in place in piston,
Step B ': by the breach contraposition of the side plane being connected with gudgeon pin shaft end face on wrist pin boss and piston, wrist pin is entered and puts into connecting rod aperture in piston again along described breach.
Preferably, described connecting rod puts in place and aligns for the piston pin hole on connecting rod aperture and piston is up and down in piston.
Preferably, described piston is that open end band is jagged, and elasticity pin-and-hole is located at the piston of piston closes end entity part or for open end is without breach, elasticity pin-and-hole is located at the piston in the skirt section of open end, and described step B ' can also be,
Wrist pin with after the breach contraposition of piston does not enter in piston along breach, but wrist pin packs into from being positioned at the top of the piston hole piston.
Preferably, described step C can also be, rotary-piston pin until the elasticity pin-and-hole being positioned on wrist pin boss and piston align.
After having adopted technique scheme, because being provided with as inside contracting from wrist pin cylinder end face, the end of wrist pin extends outstanding boss, and the compressor piston matching with wrist pin is provided with corresponding breach, make the easier to bit manipulation of whole installation process, at connecting rod and wrist pin, enter after the inside cavity of piston, be positioned at elasticity pin-and-hole on wrist pin and be positioned on piston elasticity pin-and-hole to assembly crewman all in visual state, avoided the operation of assembly crewman at small space, solved the large technical problem of existing piston assembly assembling contraposition operation easier, and be conducive to the realization of this assembling link automation, therefore can significantly enhance productivity.
Accompanying drawing explanation
Fig. 1 is embodiment one compressor piston pin and piston assembly schematic diagram.
Fig. 2 is embodiment two compressor piston pin schematic diagram.
Fig. 3 is the included piston schematic diagram of embodiment three compressor piston assembly.
Fig. 4 is embodiment three the compressor piston assembly schematic diagram before connecting rod is fit into piston.
Fig. 5 is embodiment three the compressor piston assembly schematic diagram when being fit into piston.
Fig. 6 is embodiment three the compressor piston assembly schematic diagram after installation.
Embodiment
Below in conjunction with drawings and Examples, explain summary of the invention of the present invention, embodiment of the present invention only, for explaining content of the present invention, is not limited to the present invention.
Embodiment one
As shown in Fig. 1 is, Fig. 1 is compressor piston assembly 01 schematic diagram for a kind of refrigerator, the piston 20 that comprises compressor piston pin 10 and mate with it, and connecting rod 30 and resilient key 40.Piston shown in Fig. 1 20, and connecting rod 30 and resilient key 40 and prior art is identical, the side of piston 20 is provided with piston pin hole 21, piston 20 comprises open end and closed end, in the skirt section of open end, be provided with elasticity pin-and-hole 22, state shown in Fig. 1 is that connecting rod 30 has packed in the cavity of piston 20, and wrist pin 10 does not also pack the state in piston 20 into.
As seen from Figure 1, the outstanding boss that is flat 11 is extended for inside contracting from wrist pin cylinder end face in one end of compressor piston pin 10, described boss 11 comprises the arc surface 12 that is connected with wrist pin cylinder and two side planes 14 that are connected with gudgeon pin shaft end face 13 and 15, side plane 14 and 15 settings vertical with gudgeon pin shaft end face 13, on described boss 11, be also provided with elasticity pin-and-hole 16, elasticity pin-and-hole 16 runs through setting through the side plane 14 and 15 of described boss.On described connecting rod, be provided with connecting rod aperture (invisible in this figure), described connecting rod aperture and piston pin hole 21 align up and down, after assembling completes, described wrist pin 10 is positioned at connecting rod aperture, and described resilient key 40 runs through two side planes 14,15 of piston boss and coordinates with the elasticity pin-and-hole 22 in skirt section, piston open end.
Compressor piston assembly shown in embodiment one comprises wrist pin of the present invention and piston of the prior art, elasticity pin-and-hole on the piston of prior art is located at the skirt section of open end, the something in common of the mounting type of this assembly mounting type and prior art is, comprise the following steps, first connecting rod is packed in piston cavity until connecting rod puts in place in piston, be that piston pin hole on connecting rod aperture and piston is up and down and aligns, then wrist pin is packed into from being positioned at the top of the piston hole piston, at wrist pin, pack into after the connecting rod aperture that is positioned at piston cavity, rotary-piston pin until the elasticity pin-and-hole laying respectively on wrist pin boss and piston align, finally along elasticity pin-and-hole, resilient key is inserted again, wrist pin is fixed on piston.But the difference of this installation method and existing assembling scheme is that the one end due to compressor piston pin 10 is flat boss, like this with regard to make when the compressor piston assembled elasticity pin-and-hole on piston and the elasticity pin-and-hole on wrist pin to regard to assembly crewman in visualization status, be convenient to contraposition, when there is angular displacement deviation in two piston pin holes, only need utilize flat horizontal surface just can more easily wrist pin be rotated at any angle, therefore see on the whole and reduced wrist pin installation difficulty, when the structure of flat horizontal surface also makes to go wrong in wrist pin installation process simultaneously, easily take out.
The both sides that two side planes 14,15 that are positioned at boss 11 shown in the present embodiment one can be removed wrist pin cylinder by cutting form, and side plane 14 can be not vertical with axial end axial end 13 with 15 yet, but be obliquely installed; Certainly also also can be one-body molded with wrist pin cylinder by boss.
Preferably, the arc length of the arc surface 12 of boss 11, more preferably greater than the corresponding arc length of side plane of boss, packs into after piston pin hole 21 at wrist pin 10 like this, because wide face is still and the arc surface of piston pin hole corresponding matching, can guarantee to closely cooperate with piston pin hole.
In addition, side plane 14 also can one-sidedly arrange, can guarantee equally elasticity pin-and-hole for assembly crewman in visualization status, be convenient to contraposition.
Embodiment two
Be illustrated in figure 2 the included compressor piston pin 10 of another kind of compressor piston assembly, it and embodiment's one difference is only to be also provided with flat boss 18 at the other end of wrist pin 10, and boss 18 is symmetrical arranged up and down with boss 11.Now the two ends up and down of wrist pin are owing to there being flat horizontal surface, contraposition and taking out while going wrong while being more convenient to install.
Embodiment three
Be illustrated in figure 3 the included compressor piston 20 of another kind of compressor piston assembly, described compressor piston 20 can match with the compressor piston pin 10 described in embodiment two.As shown in Figure 3, piston 20 is the cavity of one end open one end sealing, on described piston, establish upper piston pin-and-hole 21, in open end 23, be provided with the breach 24 corresponding with the boss 11 of compressor piston pin 10 described in embodiment two, breach 24 prolongs 23 and extends with piston pin hole 21 and be communicated with from open end, in the entity part near described closed end 25, be also provided with elasticity pin-and-hole 22.
As Fig. 4, Fig. 5 and Figure 6 shows that compressor piston assembly 02 and assembly process thereof, compressor piston assembly described in the present embodiment comprises wrist pin of the present invention and the piston mating with it, concrete, described piston is that open end band is jagged, elasticity pin-and-hole is located at the piston of piston closes end entity part, as Fig. 4, 5 and Fig. 6 shown in, compressor piston assembly 02 comprises connecting rod 30 and resilient key 40, compressor piston pin 10 and the piston 20 mating with it, described connecting rod 30 is provided with connecting rod aperture 31, when carrying out piston assembly installation, first compressor piston pin 10 is packed in the connecting rod aperture 31 that connecting rod 30 coordinates with piston one side, then, as shown in Figure 5, by the leptoprosopy of the boss of compressor piston pin 10 11, two of boss 11 side planes 14 and 15 and 24 contrapositions of piston breach namely, connecting rod 30 and wrist pin 10 are entered in piston pin hole 21 along piston breach 24, until after entering piston cavity and putting in place, connecting rod aperture 31 and piston pin hole 21 are aligned up and down, complete contraposition for the first time, as shown in Figure 6, by wrist pin 10 half-twists, make its leptoprosopy 14 vertical with piston breach 24 with 15, until the elasticity pin-and-hole laying respectively in wrist pin boss and piston closes end entity part aligns, complete contraposition for the second time, like this because the wide face of the boss 11 of wrist pin 10 is still the arc surface 12 with piston pin hole 21 corresponding matching, can guarantee and the closely cooperating of piston pin hole, wrist pin is stuck in piston pin hole, and then resilient key is run through through the elasticity pin-and-hole on wrist pin until the elasticity pin-and-hole of piston entity part, with resilient key 40, wrist pin 10 is fixed on piston on 20, after having assembled, described connecting rod aperture 31 aligns up and down with piston pin hole 21, described wrist pin 10 is positioned at described connecting rod aperture 31, described resilient key 40 runs through two side planes 14 and 15 and coordinate with the elasticity pin-and-hole 22 on piston 20 of piston boss.
Certainly when carrying out contraposition for the first time as stated above, can first wrist pin 10 not put into connecting rod aperture 31 yet, but first connecting rod is packed in piston cavity until connecting rod puts in place in piston, connecting rod aperture 31 and piston pin hole upper and lower 21 are aligned, then by the side plane being connected with gudgeon pin shaft end face on wrist pin boss 11 14 and 15 and breach 24 contrapositions of piston, wrist pin 10 is entered and in piston, puts into connecting rod aperture 31 again or wrist pin 10 is packed into from being positioned at the top of the piston pin hole 20 piston 20 along described breach 24; By above-mentioned method rotary-piston pin 10, carry out contraposition for the second time more afterwards.
Piston group 02 described in this example, when assembling, connecting rod aperture 31 is when entering the piston pin hole 21 of piston 20, due to the setting of breach 24, easier to bit manipulation, at connecting rod 31 and wrist pin 10, enter after the inside cavity of piston 20, be positioned at elasticity pin-and-hole on wrist pin 10 16 and be positioned on piston 22 couples of assembly crewmans of elasticity pin-and-hole all in visual state, avoid the operation at small space, therefore can significantly enhance productivity, and be conducive to the realization of this assembling link automation.
The breach 24 of the compressor piston 20 shown in Fig. 3 is the straight cut that upper and lower opening width is equal, and described breach 24 width d are half of wrist pin 10 diameter D; But the present invention is not limited thereto, this breach can also be the suitable for reading of otch and the unequal trapezoidal cut of end opening width, as long as the boss of the compressor piston pin 10 that assurance is mated with it can enter when packing contraposition into.
In addition, the invention also discloses a kind of compressor, described compressor is a kind of freezer compressor, and it has comprised the compressor piston assembly 02 described in embodiment 3.
Claims (15)
1. a compressor piston pin, for matching with compressor piston, outstanding boss is extended for inside contracting from wrist pin cylinder end face in the one end that it is characterized in that described wrist pin, described boss comprises the arc surface and at least one side plane being connected with gudgeon pin shaft end face being connected with wrist pin cylinder, on described boss, be also provided with elasticity pin-and-hole, the side plane of boss runs through setting described in described resilient key aperture.
2. wrist pin as claimed in claim 1, is characterized in that, the side plane that described gudgeon pin shaft end face is connected is two, and two described side planes arrange with gudgeon pin shaft end face is vertical respectively.
3. wrist pin as claimed in claim 2, is characterized in that, two described side planes are symmetrical arranged along the axle central plane of wrist pin.
4. wrist pin as claimed in claim 3, is characterized in that, the corresponding girth of arc surface of described boss is greater than the corresponding arc length of described side plane, and the arc surface of described boss coordinates with the piston pin hole on piston after Piston assembling completes.
5. as the wrist pin as described in any one in claim 1-4, it is characterized in that, the other end of described wrist pin is also symmetrical arranged and promisingly from wrist pin cylinder end face, inside contracts and extend outstanding boss.
6. the compressor piston matching with wrist pin claimed in claim 5, described piston is the cavity of the open the other end sealing in one end, on described piston, establish upper piston pin-and-hole, it is characterized in that, in described open end, be provided with the breach corresponding with described wrist pin boss, described breach extends to piston pin hole and is communicated with from described open end, in the entity part of described closed end, is also provided with elasticity pin-and-hole.
7. compressor piston as claimed in claim 6, is characterized in that, described breach is straight cut that upper and lower opening width is equal or is upper and lower opening width trapezoidal cut not etc.
8. compressor piston as claimed in claim 7, when described breach is straight cut, the width of described otch is half of wrist pin diameter; When described breach is trapezoidal cut, the width suitable for reading of described trapezoidal cut is half of wrist pin diameter.
9. a compressor piston assembly, it is characterized in that, comprise connecting rod and resilient key, also comprise as the compressor piston pin as described in any one and the piston mating with it in claim 1-5, described connecting rod is provided with connecting rod aperture, and after installation, described connecting rod aperture and piston pin hole align up and down, described wrist pin is positioned at described connecting rod aperture, and described resilient key runs through two side planes of piston boss and coordinates with the elasticity pin-and-hole on piston.
10. a compressor, is characterized in that, comprises compressor piston assembly as claimed in claim 9.
11. 1 kinds of compressor piston assembly assembling methods, described compressor piston assembly comprises that connecting rod and resilient key, described connecting rod are provided with connecting rod aperture, it is characterized in that, also comprise that the assembly method of described compressor piston assembly comprises the following steps as the compressor piston pin of claim 1-5 as described in any and the piston mating with it:
Steps A: wrist pin is put into connecting rod aperture;
Step B: the first contraposition step, the side plane that wrist pin boss is connected with gudgeon pin shaft end face and the breach contraposition of piston, the connecting rod that has made to pack into wrist pin enters in piston until connecting rod puts in place in piston along described breach;
Step C: the second contraposition step, by wrist pin 90-degree rotation, until the elasticity pin-and-hole laying respectively in wrist pin boss and piston closes end entity part aligns;
Step D: resilient key is run through through the elasticity pin-and-hole on wrist pin until the elasticity pin-and-hole of piston entity part is fixed on piston wrist pin.
12. compressor piston assembly assembling methods as claimed in claim 11, is characterized in that, described
In steps A and step B, can also be,
Steps A ': wrist pin is not first put into connecting rod aperture, but first connecting rod is packed in piston cavity until connecting rod puts in place in piston,
Step B ': by the breach contraposition of the side plane being connected with gudgeon pin shaft end face on wrist pin boss and piston, wrist pin is entered and puts into connecting rod aperture in piston again along described breach.
13. compressor piston assembly assembling methods as described in claim 11 or 12, is characterized in that, described connecting rod puts in place and aligns for the piston pin hole on connecting rod aperture and piston is up and down in piston.
14. compressor piston assembly assembling methods as described in claim 11 or 12, it is characterized in that, described piston is that open end band is jagged, elasticity pin-and-hole is located at the piston of piston closes end entity part or is that open end is without breach, elasticity pin-and-hole is located at the piston in the skirt section of open end, described step B ' can also be
Wrist pin with after the breach contraposition of piston does not enter in piston along breach, but wrist pin packs into from being positioned at the top of the piston hole piston.
15. compressor piston assembly assembling methods as claimed in claim 14, is characterized in that, described step C can also be, rotary-piston pin until the elasticity pin-and-hole being positioned on wrist pin boss and piston align.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310477373.3A CN103629076B (en) | 2013-10-12 | 2013-10-12 | A kind of compressor piston pin, piston, piston component and its assemble method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310477373.3A CN103629076B (en) | 2013-10-12 | 2013-10-12 | A kind of compressor piston pin, piston, piston component and its assemble method |
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| CN103629076A true CN103629076A (en) | 2014-03-12 |
| CN103629076B CN103629076B (en) | 2017-12-15 |
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| CN201310477373.3A Active CN103629076B (en) | 2013-10-12 | 2013-10-12 | A kind of compressor piston pin, piston, piston component and its assemble method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121969A (en) * | 2016-08-24 | 2016-11-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston and there is its compressor |
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| US20100089358A1 (en) * | 2008-10-13 | 2010-04-15 | Delaware Capital Formation, Inc. | Piston with improved side loading resistance |
| US20110197847A1 (en) * | 2008-10-14 | 2011-08-18 | Evgeny Nikolaevich Zakharov | Connecting rod-piston group |
| CN102356256A (en) * | 2009-03-20 | 2012-02-15 | 瓦锡兰芬兰有限公司 | Piston pin and a piston - piston pin combination |
| CN203594572U (en) * | 2013-10-12 | 2014-05-14 | 合肥凌达压缩机有限公司 | Compressor piston pin, piston and piston assembly |
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2013
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20010065243A (en) * | 1999-12-29 | 2001-07-11 | 구자홍 | mounting structure of a piston pin for hermetic compressor |
| CN101354031A (en) * | 2007-07-24 | 2009-01-28 | 三星光州电子株式会社 | Hermetic type compressor |
| US20100089358A1 (en) * | 2008-10-13 | 2010-04-15 | Delaware Capital Formation, Inc. | Piston with improved side loading resistance |
| US20110197847A1 (en) * | 2008-10-14 | 2011-08-18 | Evgeny Nikolaevich Zakharov | Connecting rod-piston group |
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| CN106121969A (en) * | 2016-08-24 | 2016-11-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston and there is its compressor |
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| CN103629076B (en) | 2017-12-15 |
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