CA2036212C - Wobble plate type refrigerant compressor having a ball-and-socket joint lubricating mechanism - Google Patents
Wobble plate type refrigerant compressor having a ball-and-socket joint lubricating mechanismInfo
- Publication number
- CA2036212C CA2036212C CA 2036212 CA2036212A CA2036212C CA 2036212 C CA2036212 C CA 2036212C CA 2036212 CA2036212 CA 2036212 CA 2036212 A CA2036212 A CA 2036212A CA 2036212 C CA2036212 C CA 2036212C
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- wobble plate
- ball
- socket
- hole
- socket joint
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Abstract
A wobble plate type refrigerant compressor having a lubricating mechanism provided at a ball-and-socket joint between a wobble plate and a piston rod is disclosed. A wobble plate type refrigerant compres-sor includes a compressor housing having a cylinder block. A plurality of cylinders are formed around the periphery of the cylinder block and a piston is slidably fitted within each of the cylinders and is recipro-cated by a drive mechanism. A crankcase is formed between the cylin-der block and a front end plate of the compressor housing. The drive mechanism includes a drive shaft, a rotor fixed to the drive shaft and a wobble plate disposed on an inclined surface of the rotor. The piston rod connects the wobble plate to the piston. A ball at one end of the rod is received in a socket formed at the wobble plate to form a ball-and-socket joint. A hole is formed at the wobble plate to link one end surface of the wobble plate to the friction surface of the ball-and-socket joint. A pair of grooves extending from one opening of the hole and terminating near the outer periphery of the wobble plate are formed at one end surface of the wobble plate. Thereby, the lubri-cating oil adhering to one end surface of the wobble plate is effectively led to the friction surface of the ball-and-socket joint.
Description
-WOBBLE PL~TE TYPE REFRIGERANT COMPRESSOR HAVING
A BAL~AND~OCKET JOINT LUBRICATING MECHANISM
BACKGROUND O~ lHE INVENTION
Fleld of the Invention The present invention relates to a wobble plate type refrigerant compressor, and more particularly, to a lubricating mech~ni~m pro-vided at a ball-and-socket ~oint between a wobble plate and a piston rod in the wobble plate type refrigerant comprecsor.
DescriPtion of the Prior Art A wobble plate type relrigerant compressor having a lubricating mech~ni-~m provided at a ball-and-socket pint bel-.een a wobble plate and a piston rod is disclosed in Japanese Utility Model Application Pub-lication No. 52-169106.
Referring to Figure 1, the wobble plate type refrigerant com-pressor includes cam rotor 300 which is fixed on a drive shaft (not shown) by any suitable means so that cam rotor 300 is rotated along with the drive shaft. Cam rotor 300 includes annular pro~ection 300a pro~ecting from in~ ned surface 300b thereof. Wobble plate 310, made of an ~luminum alloy, is mounted on a~nUl~r pro~ection 300a of cam rotor 300 through bearing element 320 and ls dlsposed on inclined sur-face 300b of cam rotor 300 through thrust needle bearing 330. Bearing element 320 includes flange portion 320a formed at one end thereof so as to prevent the axial movement of wobble plate 310. By means of bearing element 320 and thrust needle bearing 330, wobble plate 310 nutates, but does not rotate, during the rotation of cam rotor 300. A
piston (not shown) is connected to wobble plate 310 through piston rod 340 which is made of steel. Ball 341 at one end of rod 340 is firmly received in socket 311 of wobble plate 310 by cauL~cing an edge of _ - 2 -socket 311. However, ball 341 slides along an inner spherical surface of socket 311.
Since steel is harder than aluminum alloy, when ball 341 slides along the inner spherical surface of socket 311 during the operation of the compressor, abrasion at the inner spherical surface of socket 311 cannot be neglected. In order to resolve this defect, a small diameter axial hole 312, linking one end surface of wobble plate 310 facing inclined surface 300b of cam rotor 300 to the inner spherical surface of socket 311, is formed in wobble plate 310.
Thus, small diameter axial hole 312 leads the suspended lubricating oil in a crankcase of the compressor to the inner spherical surface of socket 311.
However, since hole 312 is covered by thrust needle bearing 330, the suspended lubricating oil in the crankcase cannot be effectively led to the friction surface between the outer spherical surface of ball 341 and the inner spherical surface of socket 311. Therefore, the abrasion at the inner spherical surface of socket 311 cannot be sufficiently prevented.
SU~RY OF THE INVENTION
Accordingly, it is an object of an aspect of the present invention to provide a wobble plate type refrigerant compressor comprising a lubricating mechanism which can sufficiently supply the suspended lubricating oil in a crankcase to a friction surface of a ball-and-socket joint between a wobble plate and a piston rod to prevent abrasion at an inner spherical surface of the socket.
A wobble plate type refrigerant compres60r comprises a cylinder block in which pistons are reciprocated within respective cylinders by a wobble plate member. The wobble plate member is driven by an inclined rotor member which i8 secured on a drive shaft. The wobble plate member is adjacently disposed and relatively rotatably on an inclining surface of the rotor member. A piston rod connects the wobble plate member to the piston. The piston rod includes a ball formed at one end thereof. The ball is received in a socket formed at a periphery of the wobble plate to form a ball-and-socket joint. A
hole links one end surface of the wobble plate facing the inclining surface of the rotor member to a friction surface between an outer spherical surface of the rotor member and an inner spherical surface of the socket. A pair of grooves radially extend from one opening of the hole and terminate near the periphery of the wobble plate; thus, a V-shaped configuration i8 formed at one end surface of the wobble plate.
Other aspects of this invention are as follows:
A refrigerant compressor in which pistons are reciprocated within respective cylinders by a wobble plate member driven by an inclined rotor member secured on a drive shaft, said wobble plant member driven by an inclined rotor member secured on a drive shaft, said wobble plate member being adjacently disposed and relatively rotatable on an inclining surface of said rotor member, at least one piston rod connecting said wobble plate member to one of said pistons, said piston rod including a ball formed at one end thereof, said ball being received in a socket formed at a periphery of said wobble plate to form a ball-and-socket joint, a hole l;nking one end surface of said wobble plate facing the inclining surface of said rotor member to a friction surface between an outer spherical surface of said ball and an inner spherical surface of said socket, the improvement comprising:
A
- 3a -at least one groove means which radially extends outwards from said hole being formed at said one end surface of said wobble plate ~uch that lubricating fluid in a compressor crankcase is guided along said at least one groove means and introduced through said hole, thereby providing lubrication of the friction surface of said ball-and-socket joint.
A refrigerant compressor comprising:
a cylinder block;
said cylinder block comprising a plurality of cylinders;
a plurality of pistons;
each of said pistons being disposed in one of said cylinders;
a drive shaft;
an inclined rotor member secured on said drive shaft;
a wobble plate member adjacent to and driven by said inclined rotor member;
a piston rod connecting said wobble plate member to said piston;
said piston rod including a ball formed on one end thereof;
a ball-and-socket joint formed by said ball being received in a socket provided on the periphery of said wobble plate;
a hole ext~n~;ng through said wobble plate and l;nk;ng an end surface of said wobble plate that faces the inclining surface of said rotor member to said ball-and-socket joint; and at least one groove means ext~n~;ng radially outwards from said hole, whereby suspended oil in a crankcase of said compressor is guided therealong to said hole and thus to the mating surface of said ball and said socket.
- 3b - 2036212 BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 illustrates an enlarged partially sectional view of a prior art lubrication mechanism provided at a ball-and-socket joint between a wobble plate and a piston rod in a wobble plate type refrigerant compressor.
Figure 2 illustrates a vertical longitudinal sectional view of a wobble plate type refrigerant compressor in accordance with one embodiment of the present invention.
Figure 3 illustrates a side view of the wobble plate shown in Figure 2, particularly showing a lubricating mechanism provided at the ball-and-socket joint thereof.
Figure 4 illustrates an enlarged partially side view of Figure 3.
Figure 5 illustrates a sectional view taken along line 5-5 of Figure 4.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENT
Referring to Figure 2, a wobble plate type refrigerant compressor 10 comprises cylindrical housing 11. Cylindrical housing 11 includes cylinder block 111, front end plate 112 and cylinder head 113.
The interior of housing 11 defines crankcase 114 between cylinder block 111 and front end plate 112 which is mounted on the left end portion of cylinder block 111 by a plurality of bolts 12. Cylinder head 113 together with valve plate assembly 13 are mounted on the right end portion of cylinder block 111 by a plurality of bolts 14. Opening 112a is centrally formed in front end plate 112 and drive shaft 15 is rotatably supported by a bearing, such as radial needle bearing 16 disposed in opening 112a. Front end plate 112 includes annular sleeve portion 112b 20~62:~2 - 3c -projecting from the front surface thereof. Annular sleeve projection 112b surrounds drive shaft 15 to define a shaft seal cavity in which a shaft seal element (not shown) is disposed.
Drive shaft 15 is attached to cam rotor 17 at its inner end by any suitable means so that cam rotor 17 is rotated along with drive A
shaft lS. Cam rotor 17 1s supported on an inner surface of front end plate 112 by means of a bearing, such as thrust needle bearing 18 dls posed at the inner surface o~ front end plate 112. Wobble plate 19 is on ~ ne~ sur~ace 17a of cam rotor 17 through thrust needle bearing 20. Thrust needle bearing 20 ~nclud~ a plurality of peripher-ally located needle rollers 201 which are ~ ve~n first and seeond annul~r races 202 and 203. First ann~ r race 202 is dlsy~l on ~cl~ned surface 17a of cam rotor 17 and second ~n~ race 203 is s~3 on one end surface of wobble plate 19 facing ~n~l~ned surface 17a.
Supporting member 21, in~lu-ling shank po"ion 211 having axial hole 211a formed therein, is axially slidable and non-rotatably sup-yorted within cylinder block 111 by the insertion o~ shank -yortion 211 into axial hole 111a formed in c~linder block 111. The rotation of sup-pOI ling member 21 is prevented by means of a key and key groove (not shown). Suypol ling member 21 further includes bevel gear portion 212 at the end of shank portion 211. Bevel gear portion 212 inclu.des a seat for steel ball 22 at the center thereof. Bevel gear poltion 212 of sup-porting m~mher 21 er,g~es with bevel gear 23 mounted oh wobble plate 19. Steel ball 22 is also positioned in a seat formed at the central portion of bevel gear 23, thereby allowing wobble plate 19 to be nutatably, but not rotatably, supported on steel ball 22. Coil spring 24 is d~osed in axial hole 211a of supporting member 21 and the outer end of spring 24 is in contact with screw member 25, thereby urging sllppo~ member 21 toward wobble plate 19.
Cylinder block 111 is pr~Jvld~d with a plurality of axial cylinders 26 formed therein, within which pistons 27 are slidably and closely fit-ted. Each piston 27 is cornected to wobble plate 19 through piston rod 28 made of steel. Ball 281 at one end of rod 28 is rirmly received in socket 271 of piston 27 by caulking an edge of socket 271, and ball 282 at the other end of rod 28 is firmly recei\,ed in socket 191 of wobble plate 19 by caulking an edge of socket 191. But, balls 281 and 282 slide along an inner spherical surface of sockets 271 and 191, res~ectively.
It should be understood that, although only one ball-and-socket ~oint is shown in the drawing, there are a plurality of socke s arranged -~- 203~21 2 peripherally around wobble plate 19 to recel~e the balls Or varlous rods 28, and that each piston 27 is formed with a socket for rec~ the other ball o~ rods 28.
C~lln~ head 113 is prv.l~J with suction chsm~r 29 and di~
charge rh~mlxr 30, separated by partition wall 113a. Valve plate ~ssemt)ly 13 includes valve plate 131 having suction ports 29a cor r~ect-ing suction ch~m~r 29 with c~ de~ 26 and discharge ports 30a con-necting ~1icrh~rge ch~mber 30 with cylinders 26. Valve plate accembly 13 further includes a suction reed valve (not shown), provld~l at each of suction ports 29a, and a discharge reed valve (not shown), pro~lided at each of discharge ports 30a. Additionally, a circular gasket ~not shown) and an annular gasket (not shown) are yr~ l~l to seal the mat-ing surfaces of cylinder block 111, valve plate 131 and cylinder head 113. Stopper plate 31 suppresses e.,cesslve deformation of the dis-charge reed valve. Bolt and nut device 32 secures the circular gasket, suction reed valve, l~cch~-ge reed valve, and stopper plate 31 to valve plate 131.
In operatlon of the com~ressor, drive shaft 15 is driven by any suitable ~lrl~lng source, such as an automobile engine. Cam rotor 17 rotates with drive shaft 15, so that ~ obble plate 19 may nutate about steel ball 22 according to the rotation of l~cl~ned surface 17a of cam rotor 17. The nutation of wobble plate 19 causes the reciprocation of each res~ective piston 27. Therefore, the successive strokes of suc-tion, compr~lon and evacuation of the refrigerant gas are repeatedly performed in each c~llnder 26. The refrl~rant gas circulates through a cool~ne circuit connected between inlet port 33 and outlet port 34, which are provided on suction ~h~mber 29 and discharge chamber 30, re~pectively.
Referring to Figures 3-5 additionally. socket 191 is formed at each of a plurality of radial pro~ections l9a pro~ecting from an outer periphery of wobble plate 19. Small diameter axial hole 192, linking one end surface of wobble plate 19 facing inclined surface 17a of cam rotor 17 to a friction surface between an outer spherical surface of each ball 282 and an inner spherical surface of each socket 191, is formed in wobble plate 19. A pair of grooves 193 extend from each ~ -6- 203621 2 hole 192 and terminate near the outer periphery of wobble plate 19, thus forming a V-shaped configuration at one end surtace of wobble plate 19. Secor~ ann~ r race 203 radially extends to the center of one opening or hole 192.
In this construction, during operation of the cG~,pres~or, the suspended lubricating oil in crankc~ce 114 adheres to one end surface of wobble plate 19. Then, the lubricating oil is effectively led from the crankcase to the friction surface between the outer spherical surface of ball 282 and the inner spherical surface of socket 191 via glooves 193 and hole 192. A sufficient amount of lubricating oil can be supplied to the friction surface between the outer spherical surface of ball 282 and the inner spherical surface of socket 191. Accordingly, the abra-sion at the inner spherical surface of socket 191 can be effectively prevented.
Furthermore, the number, length, extending direction and sec-tlonal configuration of the grooves 193 may be freely designed in r~l onse to demand.
This invention has been described in detail in connection with a preferred embodiment. This is for illustrative purposes only and the invention should not limited thereto. It will be easily understood by those skilled in the art that variations and modifications can be easily made within the scope of this invention as defined by the appended cl~im.c,
A BAL~AND~OCKET JOINT LUBRICATING MECHANISM
BACKGROUND O~ lHE INVENTION
Fleld of the Invention The present invention relates to a wobble plate type refrigerant compressor, and more particularly, to a lubricating mech~ni~m pro-vided at a ball-and-socket ~oint between a wobble plate and a piston rod in the wobble plate type refrigerant comprecsor.
DescriPtion of the Prior Art A wobble plate type relrigerant compressor having a lubricating mech~ni-~m provided at a ball-and-socket pint bel-.een a wobble plate and a piston rod is disclosed in Japanese Utility Model Application Pub-lication No. 52-169106.
Referring to Figure 1, the wobble plate type refrigerant com-pressor includes cam rotor 300 which is fixed on a drive shaft (not shown) by any suitable means so that cam rotor 300 is rotated along with the drive shaft. Cam rotor 300 includes annular pro~ection 300a pro~ecting from in~ ned surface 300b thereof. Wobble plate 310, made of an ~luminum alloy, is mounted on a~nUl~r pro~ection 300a of cam rotor 300 through bearing element 320 and ls dlsposed on inclined sur-face 300b of cam rotor 300 through thrust needle bearing 330. Bearing element 320 includes flange portion 320a formed at one end thereof so as to prevent the axial movement of wobble plate 310. By means of bearing element 320 and thrust needle bearing 330, wobble plate 310 nutates, but does not rotate, during the rotation of cam rotor 300. A
piston (not shown) is connected to wobble plate 310 through piston rod 340 which is made of steel. Ball 341 at one end of rod 340 is firmly received in socket 311 of wobble plate 310 by cauL~cing an edge of _ - 2 -socket 311. However, ball 341 slides along an inner spherical surface of socket 311.
Since steel is harder than aluminum alloy, when ball 341 slides along the inner spherical surface of socket 311 during the operation of the compressor, abrasion at the inner spherical surface of socket 311 cannot be neglected. In order to resolve this defect, a small diameter axial hole 312, linking one end surface of wobble plate 310 facing inclined surface 300b of cam rotor 300 to the inner spherical surface of socket 311, is formed in wobble plate 310.
Thus, small diameter axial hole 312 leads the suspended lubricating oil in a crankcase of the compressor to the inner spherical surface of socket 311.
However, since hole 312 is covered by thrust needle bearing 330, the suspended lubricating oil in the crankcase cannot be effectively led to the friction surface between the outer spherical surface of ball 341 and the inner spherical surface of socket 311. Therefore, the abrasion at the inner spherical surface of socket 311 cannot be sufficiently prevented.
SU~RY OF THE INVENTION
Accordingly, it is an object of an aspect of the present invention to provide a wobble plate type refrigerant compressor comprising a lubricating mechanism which can sufficiently supply the suspended lubricating oil in a crankcase to a friction surface of a ball-and-socket joint between a wobble plate and a piston rod to prevent abrasion at an inner spherical surface of the socket.
A wobble plate type refrigerant compres60r comprises a cylinder block in which pistons are reciprocated within respective cylinders by a wobble plate member. The wobble plate member is driven by an inclined rotor member which i8 secured on a drive shaft. The wobble plate member is adjacently disposed and relatively rotatably on an inclining surface of the rotor member. A piston rod connects the wobble plate member to the piston. The piston rod includes a ball formed at one end thereof. The ball is received in a socket formed at a periphery of the wobble plate to form a ball-and-socket joint. A
hole links one end surface of the wobble plate facing the inclining surface of the rotor member to a friction surface between an outer spherical surface of the rotor member and an inner spherical surface of the socket. A pair of grooves radially extend from one opening of the hole and terminate near the periphery of the wobble plate; thus, a V-shaped configuration i8 formed at one end surface of the wobble plate.
Other aspects of this invention are as follows:
A refrigerant compressor in which pistons are reciprocated within respective cylinders by a wobble plate member driven by an inclined rotor member secured on a drive shaft, said wobble plant member driven by an inclined rotor member secured on a drive shaft, said wobble plate member being adjacently disposed and relatively rotatable on an inclining surface of said rotor member, at least one piston rod connecting said wobble plate member to one of said pistons, said piston rod including a ball formed at one end thereof, said ball being received in a socket formed at a periphery of said wobble plate to form a ball-and-socket joint, a hole l;nking one end surface of said wobble plate facing the inclining surface of said rotor member to a friction surface between an outer spherical surface of said ball and an inner spherical surface of said socket, the improvement comprising:
A
- 3a -at least one groove means which radially extends outwards from said hole being formed at said one end surface of said wobble plate ~uch that lubricating fluid in a compressor crankcase is guided along said at least one groove means and introduced through said hole, thereby providing lubrication of the friction surface of said ball-and-socket joint.
A refrigerant compressor comprising:
a cylinder block;
said cylinder block comprising a plurality of cylinders;
a plurality of pistons;
each of said pistons being disposed in one of said cylinders;
a drive shaft;
an inclined rotor member secured on said drive shaft;
a wobble plate member adjacent to and driven by said inclined rotor member;
a piston rod connecting said wobble plate member to said piston;
said piston rod including a ball formed on one end thereof;
a ball-and-socket joint formed by said ball being received in a socket provided on the periphery of said wobble plate;
a hole ext~n~;ng through said wobble plate and l;nk;ng an end surface of said wobble plate that faces the inclining surface of said rotor member to said ball-and-socket joint; and at least one groove means ext~n~;ng radially outwards from said hole, whereby suspended oil in a crankcase of said compressor is guided therealong to said hole and thus to the mating surface of said ball and said socket.
- 3b - 2036212 BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 illustrates an enlarged partially sectional view of a prior art lubrication mechanism provided at a ball-and-socket joint between a wobble plate and a piston rod in a wobble plate type refrigerant compressor.
Figure 2 illustrates a vertical longitudinal sectional view of a wobble plate type refrigerant compressor in accordance with one embodiment of the present invention.
Figure 3 illustrates a side view of the wobble plate shown in Figure 2, particularly showing a lubricating mechanism provided at the ball-and-socket joint thereof.
Figure 4 illustrates an enlarged partially side view of Figure 3.
Figure 5 illustrates a sectional view taken along line 5-5 of Figure 4.
DETAILED DESCRIPTION OF THE PREFERRED
EMBODIMENT
Referring to Figure 2, a wobble plate type refrigerant compressor 10 comprises cylindrical housing 11. Cylindrical housing 11 includes cylinder block 111, front end plate 112 and cylinder head 113.
The interior of housing 11 defines crankcase 114 between cylinder block 111 and front end plate 112 which is mounted on the left end portion of cylinder block 111 by a plurality of bolts 12. Cylinder head 113 together with valve plate assembly 13 are mounted on the right end portion of cylinder block 111 by a plurality of bolts 14. Opening 112a is centrally formed in front end plate 112 and drive shaft 15 is rotatably supported by a bearing, such as radial needle bearing 16 disposed in opening 112a. Front end plate 112 includes annular sleeve portion 112b 20~62:~2 - 3c -projecting from the front surface thereof. Annular sleeve projection 112b surrounds drive shaft 15 to define a shaft seal cavity in which a shaft seal element (not shown) is disposed.
Drive shaft 15 is attached to cam rotor 17 at its inner end by any suitable means so that cam rotor 17 is rotated along with drive A
shaft lS. Cam rotor 17 1s supported on an inner surface of front end plate 112 by means of a bearing, such as thrust needle bearing 18 dls posed at the inner surface o~ front end plate 112. Wobble plate 19 is on ~ ne~ sur~ace 17a of cam rotor 17 through thrust needle bearing 20. Thrust needle bearing 20 ~nclud~ a plurality of peripher-ally located needle rollers 201 which are ~ ve~n first and seeond annul~r races 202 and 203. First ann~ r race 202 is dlsy~l on ~cl~ned surface 17a of cam rotor 17 and second ~n~ race 203 is s~3 on one end surface of wobble plate 19 facing ~n~l~ned surface 17a.
Supporting member 21, in~lu-ling shank po"ion 211 having axial hole 211a formed therein, is axially slidable and non-rotatably sup-yorted within cylinder block 111 by the insertion o~ shank -yortion 211 into axial hole 111a formed in c~linder block 111. The rotation of sup-pOI ling member 21 is prevented by means of a key and key groove (not shown). Suypol ling member 21 further includes bevel gear portion 212 at the end of shank portion 211. Bevel gear portion 212 inclu.des a seat for steel ball 22 at the center thereof. Bevel gear poltion 212 of sup-porting m~mher 21 er,g~es with bevel gear 23 mounted oh wobble plate 19. Steel ball 22 is also positioned in a seat formed at the central portion of bevel gear 23, thereby allowing wobble plate 19 to be nutatably, but not rotatably, supported on steel ball 22. Coil spring 24 is d~osed in axial hole 211a of supporting member 21 and the outer end of spring 24 is in contact with screw member 25, thereby urging sllppo~ member 21 toward wobble plate 19.
Cylinder block 111 is pr~Jvld~d with a plurality of axial cylinders 26 formed therein, within which pistons 27 are slidably and closely fit-ted. Each piston 27 is cornected to wobble plate 19 through piston rod 28 made of steel. Ball 281 at one end of rod 28 is rirmly received in socket 271 of piston 27 by caulking an edge of socket 271, and ball 282 at the other end of rod 28 is firmly recei\,ed in socket 191 of wobble plate 19 by caulking an edge of socket 191. But, balls 281 and 282 slide along an inner spherical surface of sockets 271 and 191, res~ectively.
It should be understood that, although only one ball-and-socket ~oint is shown in the drawing, there are a plurality of socke s arranged -~- 203~21 2 peripherally around wobble plate 19 to recel~e the balls Or varlous rods 28, and that each piston 27 is formed with a socket for rec~ the other ball o~ rods 28.
C~lln~ head 113 is prv.l~J with suction chsm~r 29 and di~
charge rh~mlxr 30, separated by partition wall 113a. Valve plate ~ssemt)ly 13 includes valve plate 131 having suction ports 29a cor r~ect-ing suction ch~m~r 29 with c~ de~ 26 and discharge ports 30a con-necting ~1icrh~rge ch~mber 30 with cylinders 26. Valve plate accembly 13 further includes a suction reed valve (not shown), provld~l at each of suction ports 29a, and a discharge reed valve (not shown), pro~lided at each of discharge ports 30a. Additionally, a circular gasket ~not shown) and an annular gasket (not shown) are yr~ l~l to seal the mat-ing surfaces of cylinder block 111, valve plate 131 and cylinder head 113. Stopper plate 31 suppresses e.,cesslve deformation of the dis-charge reed valve. Bolt and nut device 32 secures the circular gasket, suction reed valve, l~cch~-ge reed valve, and stopper plate 31 to valve plate 131.
In operatlon of the com~ressor, drive shaft 15 is driven by any suitable ~lrl~lng source, such as an automobile engine. Cam rotor 17 rotates with drive shaft 15, so that ~ obble plate 19 may nutate about steel ball 22 according to the rotation of l~cl~ned surface 17a of cam rotor 17. The nutation of wobble plate 19 causes the reciprocation of each res~ective piston 27. Therefore, the successive strokes of suc-tion, compr~lon and evacuation of the refrigerant gas are repeatedly performed in each c~llnder 26. The refrl~rant gas circulates through a cool~ne circuit connected between inlet port 33 and outlet port 34, which are provided on suction ~h~mber 29 and discharge chamber 30, re~pectively.
Referring to Figures 3-5 additionally. socket 191 is formed at each of a plurality of radial pro~ections l9a pro~ecting from an outer periphery of wobble plate 19. Small diameter axial hole 192, linking one end surface of wobble plate 19 facing inclined surface 17a of cam rotor 17 to a friction surface between an outer spherical surface of each ball 282 and an inner spherical surface of each socket 191, is formed in wobble plate 19. A pair of grooves 193 extend from each ~ -6- 203621 2 hole 192 and terminate near the outer periphery of wobble plate 19, thus forming a V-shaped configuration at one end surtace of wobble plate 19. Secor~ ann~ r race 203 radially extends to the center of one opening or hole 192.
In this construction, during operation of the cG~,pres~or, the suspended lubricating oil in crankc~ce 114 adheres to one end surface of wobble plate 19. Then, the lubricating oil is effectively led from the crankcase to the friction surface between the outer spherical surface of ball 282 and the inner spherical surface of socket 191 via glooves 193 and hole 192. A sufficient amount of lubricating oil can be supplied to the friction surface between the outer spherical surface of ball 282 and the inner spherical surface of socket 191. Accordingly, the abra-sion at the inner spherical surface of socket 191 can be effectively prevented.
Furthermore, the number, length, extending direction and sec-tlonal configuration of the grooves 193 may be freely designed in r~l onse to demand.
This invention has been described in detail in connection with a preferred embodiment. This is for illustrative purposes only and the invention should not limited thereto. It will be easily understood by those skilled in the art that variations and modifications can be easily made within the scope of this invention as defined by the appended cl~im.c,
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A refrigerant compressor in which pistons are reciprocated within respective cylinders by a wobble plate member driven by an inclined rotor member secured on a drive shaft, said wobble plant member driven by an inclined rotor member secured on a drive shaft, said wobble plate member being adjacently disposed and relatively rotatable on an inclining surface of said rotor member, at least one piston rod connecting said wobble plate member to one of said pistons, said piston rod including a ball formed at one end thereof, said ball being received in a socket formed at a periphery of said wobble plate to form a ball-and-socket joint, a hole linking one end surface of said wobble plate facing the inclining surface of said rotor member to a friction surface between an outer spherical surface of said ball and an inner spherical surface of said socket, the improvement comprising:
at least one groove means which radially extends outwards from said hole being formed at said one end surface of said wobble plate such that lubricating fluid in a compressor crankcase is guided along said at least one groove means and introduced through said hole, thereby providing lubrication of the friction surface of said ball-and-socket joint.
at least one groove means which radially extends outwards from said hole being formed at said one end surface of said wobble plate such that lubricating fluid in a compressor crankcase is guided along said at least one groove means and introduced through said hole, thereby providing lubrication of the friction surface of said ball-and-socket joint.
2. The refrigerant compressor of Claim 1 wherein a pair of grooves extend from said hole and terminate near the periphery of said wobble plate, thereby forming a V-shaped configuration.
3. A refrigerant compressor comprising:
a cylinder block;
said cylinder block comprising a plurality of cylinders;
a plurality of pistons;
each of said pistons being disposed in one of said cylinders;
a drive shaft;
an inclined rotor member secured on said drive shaft;
a wobble plate member adjacent to and driven by said inclined rotor member;
a piston rod connecting said wobble plate member to said piston;
said piston rod including a ball formed on one end thereof;
a ball-and-socket joint formed by said ball being received in a socket provided on the periphery of said wobble plate;
a hole extending through said wobble plate and linking an end surface of said wobble plate that faces the inclining surface of said rotor member to said ball-and-socket joint;
and at least one groove means extending radially outwards from said hole, whereby suspended oil in a crankcase of said compressor is guided therealong to said hole and thus to the mating surface of said ball and said socket.
a cylinder block;
said cylinder block comprising a plurality of cylinders;
a plurality of pistons;
each of said pistons being disposed in one of said cylinders;
a drive shaft;
an inclined rotor member secured on said drive shaft;
a wobble plate member adjacent to and driven by said inclined rotor member;
a piston rod connecting said wobble plate member to said piston;
said piston rod including a ball formed on one end thereof;
a ball-and-socket joint formed by said ball being received in a socket provided on the periphery of said wobble plate;
a hole extending through said wobble plate and linking an end surface of said wobble plate that faces the inclining surface of said rotor member to said ball-and-socket joint;
and at least one groove means extending radially outwards from said hole, whereby suspended oil in a crankcase of said compressor is guided therealong to said hole and thus to the mating surface of said ball and said socket.
4. The refrigerant compressor of Claim 3 wherein a pair of grooves extend from said hole and terminate near the periphery of said wobble plate.
5. The refrigerant compressor of Claim 4 wherein said pair of grooves form a V-shaped configuration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2036419A JPH02254098A (en) | 1989-02-20 | 1990-02-19 | Slanting stick controller for air plane in particular |
| JPP36419/2 | 1990-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2036212A1 CA2036212A1 (en) | 1991-08-20 |
| CA2036212C true CA2036212C (en) | 1997-03-04 |
Family
ID=12469307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2036212 Expired - Fee Related CA2036212C (en) | 1990-02-19 | 1991-02-12 | Wobble plate type refrigerant compressor having a ball-and-socket joint lubricating mechanism |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1024292C (en) |
| AU (1) | AU628714B2 (en) |
| CA (1) | CA2036212C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02274612A (en) * | 1989-04-17 | 1990-11-08 | Sanden Corp | Control device for car air-conditioning equipment |
| CN102967843B (en) * | 2012-11-12 | 2015-02-25 | 重庆市电力公司电力科学研究院 | Once pressing wiring assembly |
| RU2511884C1 (en) * | 2013-04-17 | 2014-04-10 | Олег Иванович Квасенков | Method for manufacture of preserves "rolls moldavian-style" |
| EP3096010A1 (en) * | 2015-05-21 | 2016-11-23 | Aktiebolaget SKF | Actuation system and hydraulic pump comprising such an actuation system |
| CN104929893A (en) * | 2015-06-09 | 2015-09-23 | 安庆卡尔特压缩机有限公司 | Small refrigeration compressor |
| CN106884767B (en) * | 2017-04-12 | 2019-08-09 | 宝鸡和新机电设备有限公司 | Novel inclined tray axial plunger pump |
| CN110067743A (en) * | 2018-09-21 | 2019-07-30 | 钟彪 | A kind of sliding plate and plunger pump or motor comprising the sliding plate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1195324A (en) * | 1957-12-17 | 1959-11-17 | Improvements to reciprocating compressors and especially refrigeration compressors | |
| US3761202A (en) * | 1972-01-18 | 1973-09-25 | Mitchell J Co | Compressor with cross axis |
| DE8226570U1 (en) * | 1982-09-17 | 1985-12-12 | Volvo Hydraulikfabrik Gmbh, 1000 Berlin | Running surface for hydrostatically relieved sliding shoes of piston machines |
-
1991
- 1991-02-06 AU AU70841/91A patent/AU628714B2/en not_active Ceased
- 1991-02-12 CA CA 2036212 patent/CA2036212C/en not_active Expired - Fee Related
- 1991-02-19 CN CN 91101175 patent/CN1024292C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2036212A1 (en) | 1991-08-20 |
| CN1024292C (en) | 1994-04-20 |
| CN1055041A (en) | 1991-10-02 |
| AU628714B2 (en) | 1992-09-17 |
| AU7084191A (en) | 1991-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |