CN1095939C - Piston connection device for sealed compressor - Google Patents
Piston connection device for sealed compressor Download PDFInfo
- Publication number
- CN1095939C CN1095939C CN97122114A CN97122114A CN1095939C CN 1095939 C CN1095939 C CN 1095939C CN 97122114 A CN97122114 A CN 97122114A CN 97122114 A CN97122114 A CN 97122114A CN 1095939 C CN1095939 C CN 1095939C
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- piston
- fixing part
- piece
- described piston
- piston piece
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Abstract
The present invention relates to a piston connecting device for hermetic compressors, wherein a piston is divided into a piston piece and a piston casing sliding piece. When the two pieces are to be connected, the piston connecting device fixes the two pieces by a fixing clamp, and thereby, a crankshaft assembled on an integral cylinder body machine frame can be easily connected with the piston in a scotch yoke connection mode. Therefore, the number of components for manufacturing compressors can be reduced, and cost is correspondingly reduced.
Description
Technical field
The present invention relates to a kind of piston connection device that is used for closed compressor, more specifically to a kind of improved piston connection device that is used for closed compressor, wherein, piston is divided into a piston unit and piston shell unit that fits together, this piston and a fixing clamp couple together, thereby piston is easy to be connected on the bent axle and forms the scotch yoke mode, this bent axle then is installed on the combined cylinder-block-crankcase unit rack construction.
Background technique
Fig. 1 is the sectional view of existing closed compressor.As shown in the figure, motor 3 with a stator 3a and a rotor 3b is installed in the capsul 1 that is made of a upper casing 1a and a lower casing 1b.
Each support spring 4 respectively is fixed on the internal surface of lower casing 1b in its lower end, a frame 2 at the upper end of support spring 4 upper support.
Fit into a bent axle 5 among rotor 3b, the latter has been an eccentric arm 5a in the top; A cylinder body 6 is housed on the top of frame 2.
But the piston 7 of a horizontal reciprocating movement in cylinder body 6 is connecting the eccentric arm 5a of bent axle 5 with so-called scotch yoke working method, thereby the circular movement of eccentric arm 5a is converted to the linear reciprocating motion of piston 7.
End at cylinder body 6 is provided with a valve plate 9, is fixing an end cap 8 on this valve plate, and an air suction silencer (not shown) is housed on this end cap 8.
Represent more specifically as Fig. 2, in the used existing structure that the piston in the closed compressor is connected with bent axle, piston 7 is among the insertion cylinder body 6, fixes a slip case 11 at an end of piston 7, inserts a saddle 10 in this shell 11 slidably.The eccentric arm 5a of bent axle 5 injects among the saddle 10, and the latter injects among the slip case 11.
The working principle of existing closed compressor is described with reference to the accompanying drawings.
At first, to motor 3 energisings the time, rotor 3b rotates, and along with the bent axle 5 that fits into rotor 3b rotates, the saddle 10 that is connecting the eccentric arm 5a of bent axle 5 is back and forth made parallel circular movement in slip case 11.
The piston that is used for closed compressor connects operation and comprises following each one: saddle 10 is inserted be located among the slip case 11 of piston 7 one sides, piston 7 is inserted in the vestibule of cylinder bodies 6; Bent axle 5 is passed frame 2 insert among the rotor 3b and make it fixedly connected, so that bent axle 5 and saddle 10 in the insertion slip case 11 are coupled together; Lubricating substance 10 is inserted in bent axle 5 to be stretched on the eccentric arm 5a above the frame; And the top that cylinder body 6 is fastened on frame 2.
Yet, the existing piston connection device that is used for scotch yoke formula piston/bent axle connection, structure wherein is that cylinder body and frame are separated, thereby have increased the number of components that will make, have increased manufacture cost thus.
In addition, the existing piston connection set is connected on the following compressor arrangement, wherein, cylinder body and frame are the assemblies that is separated from each other, the height from the upper surface of frame to the piston center line, and promptly the lever arm size is big, the momentum that acts on the bent axle is big, thereby has reduced the Mechanical Reliability of compressor.
And then the someone proposes the separated type cylinder body of compressor and support frame are combined into an overall structure recently.Yet, owing on existing one-piece piston and slip case, be difficult to realize, so existing piston-bent axle linkage structure is unsuitable for being assembled into combined cylinder-block-crankcase unit rack construction in compressor.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of piston connection device that is used for closed compressor, wherein piston is divided into a piston piece and a piston slip case spare, when desire couples together these two, described piston connection device is fixed together these two with a fixing clamp, thereby make a bent axle that is assembled on the combined cylinder-block-crankcase unit rack construction be easy to connect into the scotch yoke connecting mode, can reduce the part count that is used to make compressor thus, also just correspondingly cut down cost with piston.
For achieving the above object, a kind of piston connection device now is provided, it comprises: a piston piece, be shaped on a fixed groove at the one end, also have the connecting groove that forms perpendicular to this fixed groove, be shaped on a support slot along the external peripheral surface of this end; A piston shell part is provided with one in the one side and fixedly protrudes out, and the latter can inject the connecting groove that is equipped with in the fixed groove of piston piece and in its both sides corresponding to the piston piece connecting groove; With a fixing clamp, it can be fixed in the connecting groove of piston piece and piston shell part.
In addition, on the piston shell part, can be provided with a fixed groove, on piston piece, be provided with one and fixedly protrude out.By following description, just be easier to understand other advantages of the present invention, purpose feature.
Description of drawings
The description of being done by the reference accompanying drawing just can fully understand the present invention, and these accompanying drawings and description are not that restriction is of the present invention, in the accompanying drawing;
Fig. 1 is the sectional view of existing closed compressor;
Fig. 2 is the decomposing schematic representation that existing closed compressor is used to connect structure of piston;
Fig. 3 A and 3B are respectively the plan view and the front views of the piston piece of the used piston connection device of closed compressor of the present invention;
Fig. 4 A and 4B are respectively the plan view and the front views of the piston slip case spare of the used piston connection device of closed compressor of the present invention;
Fig. 5 is the front view of the fixing clamp of the used piston connection device of closed compressor of the present invention;
Fig. 6 is that the piston piece of the used piston connection device of closed compressor of the present invention is separating the side view of not-connected status with piston slip case spare;
Fig. 7 is the piston piece and the plan view of piston slip case spare before coupling together of the used piston connection device of closed compressor of the present invention;
Fig. 8 is the plan view of the used piston connection device of closed compressor of the present invention in coupled condition; And
Fig. 9 is the local enlarged perspective of the used piston connection device of closed compressor of the present invention.
Embodiment
Embodiments of the invention are described with reference to the accompanying drawings.
Piston connection device of the present invention comprises a piston, and it has a piston piece and a piston slip case spare, so that piston is connected on the eccentric arm of a bent axle that pierces into a combined cylinder-block-crankcase unit rack construction, thereby form the scotch yoke working method.
At first, shown in Fig. 3 A and 3B, an end of piston piece 20 has a necking part, has been a horizontal fixed groove 20a at the necking down end of piston piece 20, is provided with the vertical connecting groove 20b perpendicular with it in the both sides of horizontal fixed groove 20a.
Last external peripheral surface around the necking part of piston piece 20 is extended with a circle bearing groove 20c, thereby can be placed on a support 40b of a fixing clamp 40 in this support slot between connecting groove 20b.
Shown in Fig. 4 A and 4B, piston shell part 30 is to carry a saddle with the top engagement of as shown in Figure 2 crankshaft eccentric arm, also will insert among the fixed groove 20a of piston piece 20.At this, from a side of piston shell part 30 stretch out one fixedly tongue 30a connect fixed groove 20a on the piston piece 20, be a pair of vertical connecting groove 30b in the fixing both sides of tongue 30a.
As shown in Figure 5, fixing clamp 40 is provided with vertical link arm 40a in its both sides, with a crooked supporting bridge 40b, the former will insert among the connecting groove 30b of the connecting groove 20b of piston piece 20 and piston shell part 30, and the latter extends between link arm 40a and that fixing clamp 40 is had is inverted U-shaped.
After the fixedly tongue 30a of piston shell part 30 inserts among the fixed groove 20a of piston piece 20, fixing clamp 40 is snapped among the connecting groove 20b and 30b on piston piece 20 and the piston shell part 30.
It is vertical that fixed groove 20a on piston piece 20 can make, correspondingly, it is vertical that the fixedly tongue 30a of piston shell part also can make, and the connecting groove 30b of the connecting groove 20b of piston piece 20 and support slot 20c and piston shell part 30 is substantially perpendicular to fixed groove 20a and fixing tongue 30a.
In addition, fixed groove 20a on the piston piece 20 and the fixedly tongue 30a on the piston shell part 30 can replace mutually, that is, fixedly tongue 30a can be made on the piston piece 20, and fixed groove 20a can be made on the piston shell part 30.
The connection operation of the piston connection device of closed compressor of the present invention is described with reference to the accompanying drawings.
At first, as shown in Figure 6, in order in the scotch yoke mode bent axle 50 that is contained in the one-piece cylinder rack construction to be coupled together with piston, piston is divided into above-mentioned piston piece 20 and piston shell part 30.
Among a cylinder body (not shown) of piston piece 20 insertion combined cylinder-block-crankcase unit rack constructions, the piston shell part 30 that the centre is injected a saddle (not shown) is connected on the eccentric arm 50a of bent axle 50, then, piston piece 20 and piston shell part 30 is coupled together.
7-9 describe to connect the used operation of piston piece 20 and piston shell part 30 with reference to the accompanying drawings.
At first, among the fixed groove 20a of the fixedly tongue 30a of piston shell part 30 insertion piston piece 20.Secondly, the vertical connecting groove 20b of the fixed groove 20a both sides of piston piece 20 is aimed at the vertical connecting groove 30b of the fixedly tongue 30a both sides of piston shell part 30.
Then, the link arm 40a of fixing clamp 40 inserts and the connecting groove 20b of the piston piece 20 of fitting and the connecting groove 30b of piston shell part 30, thereby piston piece 20 and piston shell part 30 are linked together.
The supporting bridge 40b of portion of fixing clamp 40 injects among the support slot 20c that is provided with along the external peripheral surface top of the necking down end of piston piece 20, with this fastening fixing clamp 40 and prevent that it from reaching the outside.
In addition, fixed groove 20a be made on the piston shell part 30 and fixedly tongue 30a be made under the situation on the piston piece 20, it is same as described above to connect the used operation of piston piece and piston shell part.
Therefore, the used piston connection device of closed compressor of the present invention is the piston separated into two parts, i.e. piston piece and piston shell part, and these two portions are coupled together with fixing clamp, couple together thereby just be easy to a piston and bent axle, reduced operation, reduced manufacture cost.
Also have, piston connection device of the present invention is convenient to realize a kind of combined cylinder-block-crankcase unit rack construction, and wherein cylinder body and frame are made a monomer, has reduced thereby the height from the frame to the piston is bar-arm size, reduced the momentum that acts on the bent axle, promptly the power consumption of compressor has reduced.
Embodiments of the invention only are for convenience of explanation, and under the situation of the spiritual scope that does not break away from appended claim, those of ordinary skill in the art still can carry out various modifications, augment and replace.
Claims (8)
1. piston connection device that is used for closed compressor, it comprises:
A piston piece is provided with a fixing part at the one end;
A piston shell part has a fixing part that matches with the fixing part of described piston piece; With
A link is used for fixing the fixing part that connects described piston piece and the fixing part of described piston shell part.
2. device as claimed in claim 1 is characterized in that, the fixing part of described piston piece comprises:
A fixed groove that is formed on described piston piece one end; With
Connecting groove perpendicular to this fixed groove formation.
3. device as claimed in claim 1 is characterized in that, the fixing part of described piston shell part comprises:
A fixedly tongue that stretches out from described piston shell part, it can insert among the fixing part of described piston piece, fixedly all is shaped on connecting groove in the both sides of tongue at this,
4. device as claimed in claim 1 is characterized in that, described link is a fixing clamp, and it can be fixed to the connecting groove on the fixing part that is formed on described piston piece and be formed among the connecting groove on the fixing part of described piston shell part.
5. device as claimed in claim 1 is characterized in that, the fixing part of described piston shell part comprises:
A fixed groove that on the piston shell part, forms; With
Connecting groove perpendicular to this fixed groove formation.
6. device as claimed in claim 1 is characterized in that, the fixing part of described piston piece comprises:
A fixedly tongue that forms at an end of piston piece, it can insert the fixing part of described piston piece, fixedly all is shaped on connecting groove in the both sides of tongue at this.
7. device as claimed in claim 2 is characterized in that, the fixing part of described piston piece also comprises:
A support slot that forms along a part of external peripheral surface of this fixing part, it is used to hold link.
8. device as claimed in claim 5 is characterized in that, the fixing part of described piston shell part also comprises:
A support slot that forms along a part of external peripheral surface of this fixing part, it is used to hold link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97122114A CN1095939C (en) | 1997-11-13 | 1997-11-13 | Piston connection device for sealed compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97122114A CN1095939C (en) | 1997-11-13 | 1997-11-13 | Piston connection device for sealed compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1217433A CN1217433A (en) | 1999-05-26 |
| CN1095939C true CN1095939C (en) | 2002-12-11 |
Family
ID=5176687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97122114A Expired - Fee Related CN1095939C (en) | 1997-11-13 | 1997-11-13 | Piston connection device for sealed compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1095939C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608165A (en) * | 2018-06-15 | 2019-12-24 | 郑州奥特科技有限公司 | Plunger assembly, lubricating pump, plunger and plunger machining method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152905Y (en) * | 1993-04-10 | 1994-01-12 | 新汶矿务局 | Single-hydraulic prop piston head |
| CN1098477A (en) * | 1993-05-19 | 1995-02-08 | 株式会社日立制作所 | Sealed electrical compressor |
| EP0709574A1 (en) * | 1994-10-18 | 1996-05-01 | Graco Inc. | A reciprocable piston pump and a priming piston attachment therefor |
| US5562430A (en) * | 1993-08-31 | 1996-10-08 | Robert Bosch Gmbh | Reciprocating piston pump with a housing block and at least one reciprocating piston pump element |
-
1997
- 1997-11-13 CN CN97122114A patent/CN1095939C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152905Y (en) * | 1993-04-10 | 1994-01-12 | 新汶矿务局 | Single-hydraulic prop piston head |
| CN1098477A (en) * | 1993-05-19 | 1995-02-08 | 株式会社日立制作所 | Sealed electrical compressor |
| US5562430A (en) * | 1993-08-31 | 1996-10-08 | Robert Bosch Gmbh | Reciprocating piston pump with a housing block and at least one reciprocating piston pump element |
| EP0709574A1 (en) * | 1994-10-18 | 1996-05-01 | Graco Inc. | A reciprocable piston pump and a priming piston attachment therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1217433A (en) | 1999-05-26 |
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