CN100513786C - Connecting rod of hermetic compressor - Google Patents
Connecting rod of hermetic compressor Download PDFInfo
- Publication number
- CN100513786C CN100513786C CNB2004100726664A CN200410072666A CN100513786C CN 100513786 C CN100513786 C CN 100513786C CN B2004100726664 A CNB2004100726664 A CN B2004100726664A CN 200410072666 A CN200410072666 A CN 200410072666A CN 100513786 C CN100513786 C CN 100513786C
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- China
- Prior art keywords
- connecting rod
- diameter portion
- eccentric shaft
- piston
- bent axle
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Abstract
The invention discloses a connecting rod of closed-type compressor, which comprises the following parts: small radial part, big radial part and rod part, wherein the small radial part connects the piston through piston pin; the big radial part contains an assemblage guiding groove, which is easier to set big radial part 53 on the eccentric shaft of crank; the rod part connects the small and big radial parts. The invention prevents the compressor connecting rod from damaging, which simplifies the assemblage procedure of connecting rod and crank and reduces the making cost of the whole compressor.
Description
Technical field
The present invention is relevant hermetic motor compressor, more particularly, to relate to and a kind ofly to become the rotation transformation of bent axle the connecting rod of piston straight reciprocating motion easily to be installed in structure on the crankshaft eccentric shaft in order making.
Background technique
Compressor is by the different variforms that are divided into of refrigerant kind of compression mode and use.The cylinder that hermetic motor compressor possesses by inside and at cylinder interior pistons reciprocating effect compression refrigerant is generally used in the cooling system of refrigerator etc.Hermetic motor compressor (hereinafter to be referred as compressor) to the motor of compression mechanical part supply power, is accommodated the casing formation that compression mechanical part and mechanism portion also play airtight effect by the compression mechanical part by the to-and-fro motion compression refrigerant.
The structure of general hermetic motor compressor as shown in Figure 1.
The inside of seal container 1 is provided with the motor 4 that is made of stator 2 and rotor 3.Be pressed into bent axle 5 in the 3a of hole being pressed into of rotor 3 central authorities, the upper end portion of bent axle 5 is inserted in the shaft supporting part 6a of cylinder block 6 and rotates.In addition, in order when rotor 3 rotates, to subdue the vibration of passing to stator 2, below stator 2, be provided with a plurality of spring S.
The eccentric shaft 5a that the upper end portion of bent axle 5 has skew to form is combined with lining 7 on the eccentric shaft 5a, the periphery of lining 7 is provided with connecting rod 8, and connecting rod 8 can be converted to straight line motion to rotatablely moving of bent axle 5.The opposite side of eccentric shaft 5a is provided with equilibrium block 5b.
A side is equipped with cylinder 9 on the top of cylinder block 6, and piston 10 is installed in cylinder 9 inside.One end of piston 10 connects the front end of connecting rod 8.From outside turn-on power, rotor 3 rotations then are pressed into the also rotation together of bent axle 5 of 3 li of rotors.Rotatablely moving by being converted to straight line motion under the effect that is connected the connecting rod 8 on the eccentric shaft 5a of bent axle 5, and piston 10 is moved back and forth in cylinder 9 inside.
One side setting of cylinder 9 can be controlled the control valve unit 12 of the suction and the discharge of refrigerant in the pressing chamber 11.The outside of control valve unit 12 is provided with can separate the cylinder cap 13 that sucks refrigerant and discharge refrigerant.The noise that produces when sucking refrigerant in order to reduce is at the downside outfit absorbing silencer 14 of cylinder cap 13.Upside in cylinder block 6 is equipped with exhaust silencer 15, is absorbed in the noise that produces when discharging refrigerant.The inner lower of bent axle 5 is provided with the oil feeder 17 that can suck seal container 1 bottom oil 16, and there is oil duct 18 inside of bent axle 5, and the oil 16 that oil feeder 17 sucks is supplied with positions such as bent axle 5, connecting rod 8, cylinder 10.Undeclared symbol 19 is for sucking the suction pipe of refrigerant in the accompanying drawing.
The structure of connecting rod 8 as shown in Figure 2.Connecting rod 8 is connected the large-diameter portion 8b on the crankshaft eccentric shaft by the minor diameter part 8a that is connected internal piston, and the 8c of bar portion that connects minor diameter part 8a and large-diameter portion 8b constitutes.
The process that connecting rod 8 is assemblied between bent axle 5 and the piston 10 is as follows.Inserting under the state of connecting rod 8 minor diameter part 8a from the rear of piston 10, wrist pin 10b is inserted in the pin-and-hole 10b of piston 10, piston 10 and connecting rod 8 are connected and fixed thus.And the piston 10 that is equipped with connecting rod 8 is inserted into 11 li of the pressing chambers of cylinder 9 inside.At this moment, the large-diameter portion 8b of connecting rod 8 makes piston 10 move left and right.
Be close in the one side lower end of connecting rod 8 large-diameter portions under the state of eccentric shaft 5a one side of bent axle 5, the upper end of large-diameter portion 8b be turned back to the eccentric shaft 5a opposite side of bent axle 5, then piston 10 rotations the time large-diameter portion 8b with the eccentric shaft 5a combination of bent axle.
As mentioned above, under the state that the eccentric shaft 5a and the large-diameter portion 8b of bent axle combine, insert columniform lining 7 between the periphery of eccentric shaft 5a and the large-diameter portion 8b, then the inner side surface of lining 7 is close to the outer side surface of eccentric shaft 5a, and its outer side surface is kept sliding mode with between the inner side surface of connecting rod large-diameter portion 8b.
But, following shortcoming is arranged according to the connecting rod of prior art.
For the large-diameter portion 8b of connecting rod being inserted the eccentric shaft 5a of bent axle, will vertically erect large-diameter portion 8b come under the state, insert after the upper end portion of large-diameter portion 8b being forwarded to the top of eccentric shaft 5a, at this moment connecting rod can only move up and down, and can not move left and right.Therefore, be close to below large-diameter portion 8b under the state of eccentric shaft 5a, need with certain strength, the upper end portion such as impact large-diameter portion 8b with rubber hammer etc. is inserted in the eccentric shaft 5a upper end portion of large-diameter portion 8b.But connecting rod 8 is to make of the alloy of sintering, is fragile material.Therefore, impact the large-diameter portion 8b of connecting rod with rubber hammer, then connecting rod 8 will fracture, the shortcoming that generation can not the assemble compressible machine.If connecting rod 8 is subjected to impact force, even connecting rod 8 does not fracture, the following side fragmentation of large-diameter portion 8b also might take place, and below fragment falls.The fragment of connecting rod 8 is fallen the below of compressor and is mixed in the oil 16, is sucked by the oil feeder 17 of bent axle 5.In oil-absorbing process, the fragment of connecting rod 8 can enter in bent axle 5 and the cylinder block, and bent axle 5 can not be rotated again; The fragment of connecting rod is blended in the oil of supplying with bent axle 5, enters between cylinder 9 and the piston 10, thereby piston 10 can not be moved back and forth.Finally, cause compressor not operate.
Summary of the invention
The present invention provides a kind of connecting rod breakage that prevents for solving the technical problem that exists in the above-mentioned technology in the assembling process of connecting rod, connecting rod is assembled in easily the connecting rod of the hermetic motor compressor on the eccentric shaft of bent axle.
The technological scheme that the present invention takes for the technical problem that exists in the above-mentioned technology of solution is:
Connecting rod of the present invention comprises that by utilizing wrist pin to be combined in the minor diameter part of piston be inserted in the large-diameter portion on the eccentric shaft of bent axle upper end, the bar portion that connects minor diameter part and large-diameter portion constitutes; In the large-diameter portion lower end for large-diameter portion can easily be assembled on the eccentric shaft of bent axle and be formed with the assembling guide groove.The assembling guide groove is formed on below the large-diameter portion of connecting rod, and forms circular shape.
Advantage and good effect that the present invention has are:
1) below the connecting rod large-diameter portion assembling guide groove is arranged, the large-diameter portion of connecting rod is the eccentric shaft left side of bent axle to assembly direction.So, the large-diameter portion of connecting rod can more can successfully be assembled on the eccentric shaft of bent axle.Thus, the assembling procedure of connecting rod and bent axle is simplified, but also can reduce the manufacturing cost of compressor.
2) with minimum power, just can assemble connecting rod with hand such as the operator.So do not use the enormous impact power that hammer etc. applies and be added on the connecting rod, thereby in assembling process, prevent the breakage of connecting rod., connecting rod is not broken, can prevent that the connecting rod fragment from entering between the compressor means portion (piston, cylinder, cylinder block etc.).
3) in assembling process, prevent the connecting rod breakage, normally carry out the aspect for the outfit of connecting rod and also have advantage.
Description of drawings
Fig. 1 is common hermetic motor compressor section of structure.
Fig. 2 is the connecting rod oblique drawing according to prior art.
Fig. 3 a is a connecting rod oblique drawing of the present invention.
Fig. 3 b is a connecting rod sectional drawing of the present invention.
Fig. 4 is the oblique drawing of assembling connecting rod state of the present invention.
Main symbol description
5: bent axle 5a: eccentric shaft
10: piston 50: connecting rod
51: minor diameter part 51a: joining hole
53: large-diameter portion 53a: joining hole
60: the assembling guide groove
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Fig. 3 a is according to connecting rod oblique drawing of the present invention, and Fig. 3 b is according to bar linkage structure sectional drawing of the present invention.Fig. 4 is according to connecting rod assembling oblique drawing of the state of the present invention.
As shown in the figure, connecting rod 50 of the present invention is between bent axle 5 and piston 10.
Being constructed as follows of connecting rod 50.
Connecting rod 50 is made of minor diameter part 51 and large-diameter portion 53 and bar portion 55.Minor diameter part 51 in order to connect connecting rod 50 and piston 10 its inside up and down direction form the joining hole 51a of appointment.Promptly insert under the state of piston 10 inside at joining hole 51a, wrist pin 10b is inserted in the pin-and-hole 10a of piston 10, then wrist pin 10b passes through the joining hole 51a of minor diameter part 51 and is fixed in the downside pin-and-hole.Minor diameter part 51 is fixed on piston 10 inside by wrist pin 10b, can form sliding mode between the joining hole 51a of minor diameter part 51 and the wrist pin 10b simultaneously.That is, Gu Ding connecting rod 50 minor diameter parts 51 can swing.
Large-diameter portion 53 is connected on the bent axle 5 in order to make connecting rod 50, and its inside is formed with the joining hole 53a that inserts bent axle 5 eccentric shaft 5a.Following right side of face at large-diameter portion 53 is formed with assembling guide groove 60.Assembling guide groove 60 forms to upper direction from large-diameter portion 53 bottoms by circular arc.
The process that forms assembling guide groove 60 on connecting rod 50 is as follows.
A kind of method is machine shaping.That is, below connecting rod 50 is finished the large-diameter portion 53 of product,, then the large-diameter portion 53 of connecting rod 50 below, form and assemble guide groove 60 with the machinery deep processing on demand of appointment.
Another kind method is assembling guide groove 60 and connecting rod 50 moulding together.Connecting rod 50 usefulness have the cast iron or the sintered alloy of certain intensity and make.The mold of appointment, the mould of promptly embedded connecting rod 50 shapes or sandbox are revised as can moulding after the form of assembling guide groove 60, injects the raw material of molten state.Through behind the certain hour, separate mold, then can produce the connecting rod 50 that has assembling guide groove 60 shapes.
When making connecting rod 50, inject pulverous raw metal in the mould with sintered alloy.Inject metallic dust after revising mould earlier, mould is applied certain pressure and heat, can make the connecting rod 50 that has assembling guide groove 60 shapes thus.
Specify the connecting rod 50 that has assembling guide groove 60 shapes below with reference to Fig. 4 and be assembled in process between bent axle 5 and the piston 10.
At first, insert the minor diameter part 51 of connecting rod 50 from the rear of piston 10.At this moment, make the pin-and-hole 10a direction connection up and down of the joining hole 51a and the piston 10 of minor diameter part 51.Insert wrist pin 10b in the pin-and-hole 10a of piston 10, then wrist pin 10b is combined in the joining hole 51a of minor diameter part 51.Utilize wrist pin 10b to connect the connecting rod 50 of piston 10 back, direction is swung to the left and right.This is: because keep sliding mode between the outer side surface of the joining hole 51a of minor diameter part 51 and wrist pin 10b, thereby connecting rod 50 can be swung.
Under the state that piston 10 and connecting rod 50 mutually combine, piston 10 is inserted into inner pressing chamber (not shown) lining of cylinder (not shown).But only insert the front end part of piston 10.This is: in order later on connecting rod 50 easily to be inserted among the eccentric shaft 5a of bent axle 5, and only the front end part of piston 10 is inserted into inner pressing chamber (not shown) lining of cylinder (not shown).Rotary-piston 10 is vertically erect connecting rod 50.The large-diameter portion 53 of connecting rod 50 direction up and down moves, and simultaneously the eccentric shaft 5a right side of bent axle 5 is close to below the large-diameter portion 53 of connecting rod 50, and more particularly, the eccentric shaft 5a right side of bent axle 5 is close to 60 li of assembling guide grooves.That is, the large-diameter portion 53 of connecting rod 50 is by the left side of the degree of depth of assembling guide groove 60 to eccentric shaft 5a.Connecting rod 50 adippings of such heeling condition, promptly the left direction of eccentric shaft 5a rotates, and then the large-diameter portion 53 of connecting rod 50 is easy to be inserted in eccentric shaft 5a by joining hole 53a.
At this moment, between the inner side surface of the outer side surface of eccentric shaft 5a and large-diameter portion 53 joining hole 53a certain clearance is arranged, in the gap, insert cylindrical bush 7.The inner side surface of lining 7 is close to the outer side surface of eccentric shaft 5a, and outer side surface is close to the inner side surface of connecting rod 50 large-diameter portions 53 with the state that slides.
As mentioned above, basic fundamental invention thought of the present invention is: the assembling guide groove that has the assembling work that can make connecting rod to carry out smoothly below the large-diameter portion of connecting rod.In basic thought category of the present invention, those of ordinary skill in the art can propose more variation.
Claims (2)
1, a kind of connecting rod of hermetic motor compressor comprises that by utilizing wrist pin to be combined in minor diameter part on the piston insert the large-diameter portion of bent axle upper end eccentric shaft, the bar portion that connects between minor diameter part and the large-diameter portion constitutes; It is characterized in that the lower end of large-diameter portion is formed with and can makes big footpath be assembled in assembling guide groove on the crankshaft eccentric shaft easily.
2, the connecting rod of hermetic motor compressor according to claim 1 is characterized in that, the assembling guide groove is shaped as circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100726664A CN100513786C (en) | 2004-11-05 | 2004-11-05 | Connecting rod of hermetic compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100726664A CN100513786C (en) | 2004-11-05 | 2004-11-05 | Connecting rod of hermetic compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1769704A CN1769704A (en) | 2006-05-10 |
| CN100513786C true CN100513786C (en) | 2009-07-15 |
Family
ID=36751189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100726664A Expired - Fee Related CN100513786C (en) | 2004-11-05 | 2004-11-05 | Connecting rod of hermetic compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100513786C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375479B (en) * | 2012-04-12 | 2015-11-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Link assembly and there is its compressor |
| CN104196872A (en) * | 2014-07-28 | 2014-12-10 | 朱德仲 | Swinging rod mechanism for closed container device |
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2004
- 2004-11-05 CN CNB2004100726664A patent/CN100513786C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1769704A (en) | 2006-05-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20111105 |