CN201310460Y - Card connection ball connecting rod of refrigerant compressor - Google Patents
Card connection ball connecting rod of refrigerant compressor Download PDFInfo
- Publication number
- CN201310460Y CN201310460Y CNU2008201692847U CN200820169284U CN201310460Y CN 201310460 Y CN201310460 Y CN 201310460Y CN U2008201692847 U CNU2008201692847 U CN U2008201692847U CN 200820169284 U CN200820169284 U CN 200820169284U CN 201310460 Y CN201310460 Y CN 201310460Y
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- China
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- connecting rod
- piston
- rod body
- card connection
- connection ball
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
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Abstract
The utility model relates to a card connection ball connecting rod of refrigerant compressor, which belongs to the field of a refrigerant compression device. The connecting rod in the prior art is an integral connecting rod, which needs to be jointed with a piston through a pin shaft, moves depending on the side surface of a cylinder of a working end and has high requirements of the processing accuracy and poor working effect of pushing the piston. The card connection ball connecting rod comprises a first connecting rod body which is provided with a bent shaft mounting hole and a second connecting rod body, and the bent mounting hole is perpendicular to the length direction of the first connecting rod body. The card connection ball connecting rod is characterized in that the second connecting rod body is a spherical segment body, a containing cavity which is concave inward is opened on the bottom of the spherical segment body, a connecting part which is matched with the containing cavity is arranged on one end of the first connecting rod body, which is opposite to the bent shaft mounting hole, and the connecting part is connected with the containing cavity. The card connection ball connecting rod has the advantages that the flexibility of the multidirectional swinging of the connecting rod corresponding to the piston is increased, and the requirements of the accuracy of work pieces are reduced, the reciprocating motion of the piston is stable, the mode of connecting the piston with the pin shaft is not adopted, the length of a sealing cavity is prolonged, the working effect of a refrigerant compressor is improved, the accuracy of manufacturing the work pieces is high and the difficulty of manufacturing the work pieces is low, the yield is high, and the card connection ball connecting rod is convenient for the assembly of connecting rods, bent shafts and the piston.
Description
[technical field]
The utility model relates to a kind of refrigeration compressor connecting rod that improves structure, and specifically clamping ball formula connecting rod belongs to the refrigerant compression apparatus field.
[background technique]
In the chiller plant such as refrigerator, refrigerator, the piston of Totally-enclosed piston type compressor is normally done flexible to-and-fro motion under the drive of the connecting rod of crank-driven.In the prior art, the assembly relation of piston and connecting rod and bent axle as shown in Figure 1 and Figure 2, bent axle d becomes the α angle to articulate with connecting rod c rear end, the working surface (being generally cylindrical side) of connecting rod c front end is connected with piston a through bearing pin b.During proper functioning, connecting rod c should do forward-reverse motion in the plane vertical with bearing pin b, is that the axle center relies on cylindrical side and does the swing that left and right sides amplitude is 1/2nd β angles with bearing pin b in this plane also simultaneously.In addition, connecting rod c does not allow to move in other direction, otherwise the offset movement of connecting rod c can apply the power of the normal vibration-direction of skew to piston, and its a part of frictional force that contacts with cylinder inner wall is increased, and hinders piston and moves even stop motion along cylinder inner wall.For fear of the generation of above-mentioned situation, guarantee piston crustal extension to-and-fro motion continually and steadily, the angle α of bent axle d and connecting rod c needs to remain unchanged down in working order always.Therefore, right angle requirement on machining accuracy to the crankshaft installed hole of rod rear end and cylinder inner wall is very high, need to adopt special process equipment, to the machining accuracy of bent axle, connecting rod, also very high together with the requirement of the machining accuracy of piston, bearing pin and assembly precision, the crankshaft installed hole of monolithic linkage and the parallelism difficulty of processing of bearing pin mounting hole are very big, and product percent of pass is low.If machining accuracy or assembly precision have slightly reduce or refrigeration compressor in use frame angle distortion is arranged slightly, cause connecting rod other direction outside the in-plane vertical that small skew swing takes place with bearing pin, gently then can cause the discontinuous smoothness of piston motion, accelerating piston, cylinder wear produce the gap to cause cylinder inner wall, the forfeiture tightness, reduce the compressor effect, heavy then can cause piston to be stuck in the cylinder, compressor is quit work.In addition, when installing monolithic linkage in the refrigeration compressor in the prior art, because of the restriction of compressor volume, the operating space is little, must earlier piston all be inserted in the cylinder, the connecting rod front end is inserted in the piston again, and insert bearing pin by the mount inlet on the cylinder wall the two is coupled together, because the bearing pin mount inlet is set need take one section cylinder wall, has reduced the running length (minimizing of Seal cage length) of piston motion, has reduced the working efficiency of same specification cylinder compressor.
[model utility content]
The technical assignment of the technical problems to be solved in the utility model and proposition is the defective that overcomes prior art, even the refrigeration compressor clamping ball formula connecting rod that a kind of workpiece processing difficulty is low, the swing of the high generation of yield rate slight shift still can reach fine work effect is provided.Further purpose of the present utility model is split manufacturing, easy processing, precision height, is convenient to and piston, bent axle assembling, and does not take the cylinder wall position, can further improve compressor operating efficient.For this reason, the utility model adopts following technological scheme:
Refrigeration compressor clamping ball formula connecting rod, comprise the first connecting rod body and the second connecting rod body that have the crankshaft installed hole, described crankshaft installed hole is vertical with first connecting rod body length direction, it is characterized in that described second connecting rod body is a spheroid, the spheroid bottom surface has the indent receiving cavity, the end that described first connecting rod body is relative with the crankshaft installed hole is provided with the joint that cooperates with receiving cavity, and joint is connected with receiving cavity.The special spheroid that is provided with partly is used for being connected with piston, changed prior art by bearing pin and piston ways of connecting, relying on the spheroid surface can make the relative piston of connecting rod do the flexible swing of multi-angle, under the situation of equal offset amplitude, reduced the biasing force effect that connecting rod skew swing produces piston greatly, thereby the frictional force that piston and cylinder inner wall are produced because of biasing force is not enough to influence the normal flexible to-and-fro motion of piston in cylinder, has guaranteed the work effect of refrigeration compressor.Joint can be connected by interference fit, screw thread and other equivalent way with receiving cavity.Process first connecting rod body and second connecting rod body respectively, easily manufactured and can adjust precision respectively, realize whole highi degree of accuracy easily, the yield rate height with connecting rod.In addition, the second connecting rod body of this structure does not adopt the bearing pin of prior art to be connected with piston, can be increased in the running length of piston motion the length that the bearing pin mount inlet need take one section cylinder wall is set, prolonged Seal cage length, that adopts the same specification cylinder also can improve compressor operating efficient.
For the improving and replenishing of technique scheme, can increase following technical characteristics or its combination:
Described joint and receiving cavity periphery are welded to connect.Utilize steel ball processing spheroid simple, machining accuracy is guaranteed, and welding manner is fixedly connected, and connecting rod strength is good.
The spheroid height of described second connecting rod body is greater than the spheroid radius.Increase the spherical crown area as far as possible, be convenient to be connected, guarantee simultaneously and the area that is connected of joint, guarantee connecting rod strength with the piston receiving cavity.
Described first connecting rod body comprises the interconnective big end and the bar-shaped body of rod, and described crankshaft installed hole is positioned at big end, and described connection part is in an end of the body of rod.The big end of processing and the body of rod respectively, easily manufactured and can partly adjust precision, realize the highi degree of accuracy of connecting rod integral easily.
Described big end is provided with outstanding accommodating part, the accommodating part has horizontal fitting recess and the vertical eccentric opening that runs through fitting recess, be provided with spacing muscle in the fitting recess, the end that the described body of rod is relative with joint is provided with the insertion end that cooperates with fitting recess, have the draw-in groove that cooperates with spacing muscle on the insertion end, be installed with cam pin in the described eccentric opening through draw-in groove.During assembling, insertion end is inserted from the vertical fitting recess notch of spacing muscle, draw-in groove is cooperated with spacing muscle, and then cam pin is inserted in the eccentric opening, and spacing muscle cooperates with cam pin firm being fixed in the fitting recess of insertion end.This structure is convenient to processing, also is convenient to connecting rod and bent axle, piston assembling installation simultaneously.The body of rod can be connected with piston with spheroid welding back, and then be connected with big end, bent axle.
The utility model ad hoc spheroid has obviously increased the flexibility that the relative piston of connecting rod is done multi-direction swing, thereby can reduce the workpiece accuracy requirement, under the situation of equal offset amplitude, the biasing force effect that connecting rod skew swing produces piston can be decreased to and be not enough to influence the normal flexible to-and-fro motion of piston in cylinder, and need not to adopt prior art by bearing pin and piston ways of connecting, prolong Seal cage length, improved the work effect of refrigeration compressor; Split is made, and can locally adjust workpiece accuracy, and difficulty of processing is low, and the yield rate height is convenient to connecting rod and bent axle, piston assembling.
[description of drawings]
Fig. 1 is the assembly structure schematic representation of prior art connecting rod and piston, bent axle;
Fig. 2 is the plan structure schematic representation of Fig. 1;
Fig. 3 is the utility model embodiment's a structural representation;
Fig. 4 is that the A-A of Fig. 3 is to cross-sectional view;
Fig. 5 is the structural representation of big end among the utility model embodiment;
Fig. 6 is that the B-B of Fig. 5 is to cross-sectional view;
Fig. 7 is that the C-C of Fig. 5 is to cross-sectional view;
Fig. 8 is the right TV structure schematic representation of Fig. 5;
Fig. 9 is the structural representation of the body of rod among the utility model embodiment.
Among the figure: 1, big end, 11, the crankshaft installed hole, 12, the accommodating part, 13, eccentric opening, 14, spacing muscle, 15, fitting recess, 2, the body of rod, 21, insertion end, 22, joint, 23, draw-in groove, 3, spheroid, 31, receiving cavity, 4, cam pin, 5, weld seam; A, piston, b, bearing pin, c, connecting rod, d, bent axle, e, cylinder wall, the angle of α, bent axle d and connecting rod c, the angle of β, the connecting rod c left and right sides amplitude of oscillation.
[embodiment]
Below in conjunction with specification drawings and specific embodiments substantive distinguishing features of the present utility model is further described.
Fig. 1, shown in Figure 2, in the prior art, bent axle d and connecting rod c rear end articulate, and the working end of connecting rod c front end (working surface is the cylindrical body side) is connected with piston a by the bearing pin b that the mount inlet at cylinder wall e inserts.During proper functioning, connecting rod c should do forward-reverse motion in the plane vertical with bearing pin b, is that the swing that left and right sides amplitude is 1/2nd β angles is done in the axle center with bearing pin b in this plane also simultaneously.The angle α of bent axle d and connecting rod c need remain unchanged when working.
Shown in Fig. 3,4, refrigeration compressor clamping ball formula connecting rod comprises the first connecting rod body and the second connecting rod body that have crankshaft installed hole 11, and crankshaft installed hole 11 is vertical with first connecting rod body length direction, second connecting rod body 3 is a spheroid 3, and spheroid 3 bottom surfaces have indent receiving cavity 31.The first connecting rod body comprises the interconnective big end 1 and the bar-shaped body of rod 2, and crankshaft installed hole 11 is positioned at big end 1, and an end of the body of rod 2 is provided with the joint 22 that cooperates with receiving cavity 31, and joint 22 is welded to connect with receiving cavity 31 peripheries, forms weld seam 5.The other end of the body of rod 2 is connected with big end 1 by cam pin 4.Spheroid 3 height are greater than the spheroid radius.
Shown in Fig. 5,6,7,8, crankshaft installed hole 11 is positioned at big end 1 and vertical with first connecting rod body length direction, crankshaft installed hole 11 1 sides are provided with outstanding accommodating part 12, and accommodating part 12 has horizontal fitting recess 15 and the vertical eccentric opening 13 that runs through fitting recess, is provided with spacing muscle 14 in the fitting recess 15.
Shown in Fig. 4,6,7,9, one end of the body of rod 2 is provided with the joint 22 that cooperates with receiving cavity 31, the body of rod 2 and joint 22 relative ends are provided with the insertion end 21 that cooperates with fitting recess 15, have the draw-in groove 23 that cooperates with spacing muscle 14 on the insertion end 21, be installed with cam pin 4 in the eccentric opening 13 through draw-in groove 23.
Refrigeration compressor clamping ball formula connecting rod shown in above Fig. 3-9 is a specific embodiment of the utility model, the utility model substantive distinguishing features and progress have been embodied, can carry out the modification of aspects such as shape, specification, material to it according to the use needs of reality, seldom give unnecessary details at this.
Claims (5)
1. refrigeration compressor clamping ball formula connecting rod, comprise the first connecting rod body and the second connecting rod body that have crankshaft installed hole (11), described crankshaft installed hole (11) is vertical with first connecting rod body length direction, it is characterized in that described second connecting rod body (3) is a spheroid (3), spheroid (3) bottom surface has indent receiving cavity (31), the end that described first connecting rod body is relative with crankshaft installed hole (11) is provided with the joint (22) that cooperates with receiving cavity (31), and joint (22) is connected with receiving cavity (31).
2. refrigeration compressor clamping ball formula connecting rod according to claim 1 is characterized in that described joint (22) and receiving cavity (31) periphery are welded to connect.
3. refrigeration compressor clamping ball formula connecting rod according to claim 2 is characterized in that the radius of the height of described spheroid (3) greater than spheroid.
4. according to claim 1 or 2 or 3 described refrigeration compressor clamping ball formula connecting rods, it is characterized in that described first connecting rod body comprises the interconnective big end (1) and the bar-shaped body of rod (2), described crankshaft installed hole (11) is positioned at big end (1), and described joint (22) is positioned at an end of the body of rod (2).
5. refrigeration compressor clamping ball formula connecting rod according to claim 4, it is characterized in that described big end (1) is provided with outstanding accommodating part (12), accommodating part (12) has horizontal fitting recess (15) and the vertical eccentric opening (13) that runs through fitting recess, be provided with spacing muscle (14) in the fitting recess (15), the insertion end (21) that the end that the described body of rod (2) is relative with joint (22) is provided with and fitting recess (15) cooperates, have the draw-in groove (23) that cooperates with spacing muscle (14) on the insertion end (21), be installed with cam pin (4) in the described eccentric opening (13) through draw-in groove (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201692847U CN201310460Y (en) | 2008-11-28 | 2008-11-28 | Card connection ball connecting rod of refrigerant compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201692847U CN201310460Y (en) | 2008-11-28 | 2008-11-28 | Card connection ball connecting rod of refrigerant compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310460Y true CN201310460Y (en) | 2009-09-16 |
Family
ID=41107714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201692847U Expired - Fee Related CN201310460Y (en) | 2008-11-28 | 2008-11-28 | Card connection ball connecting rod of refrigerant compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310460Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852960A (en) * | 2012-07-31 | 2013-01-02 | 苏州柏德纳科技有限公司 | Connecting rod |
| CN108382531A (en) * | 2018-02-28 | 2018-08-10 | 北京臻迪科技股份有限公司 | A kind of detacher, connection structure and unmanned boat |
| CN113107816A (en) * | 2020-01-10 | 2021-07-13 | 安徽美芝制冷设备有限公司 | Connecting rod structure, compressor and refrigeration plant |
-
2008
- 2008-11-28 CN CNU2008201692847U patent/CN201310460Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852960A (en) * | 2012-07-31 | 2013-01-02 | 苏州柏德纳科技有限公司 | Connecting rod |
| CN108382531A (en) * | 2018-02-28 | 2018-08-10 | 北京臻迪科技股份有限公司 | A kind of detacher, connection structure and unmanned boat |
| CN113107816A (en) * | 2020-01-10 | 2021-07-13 | 安徽美芝制冷设备有限公司 | Connecting rod structure, compressor and refrigeration plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090916 Termination date: 20111128 |