CN105556121B - Variable-capacity swash plate compressor - Google Patents

Abstract

Provided is a variable-capacity swash plate compressor that exhibits superior mountability and high controllability. The compressor is provided with an actuator (13). The actuator (13) has a mobile body (13a) and a control pressure chamber (13b). The mobile body (13) has a first mobile tube (131), and an action section (134) is provided in a protruding manner to the back end of the first mobile tube (131). A planar action surface (134a) is formed at the action section (134). Also, a convex section (5g) is formed at the swash plate main body (50) of the swash plate (5) in the compressor. The convex section (5g) is positioned at the side of a section (T) corresponding to the top dead center of the swash plate (5) in the front surface (5a) of the swash plate main body (50). In the compressor, the action surface (134a) and the convex section (5g) contact at an action position (F). Thus, the action position (F) moves towards the drive shaft center (O) side when the inclination angle of the swash plate (5) becomes small.

Description

Capacity variable type tilted-plate compressor

Technical field

The present invention relates to capacity variable type tilted-plate compressor.

Background technology

Patent Document 1 discloses existing capacity variable type tilted-plate compressor (hereinafter referred to as compressor.).Should Compressor possesses housing, drive shaft, swash plate, linkage, multiple pistons, switching mechanism and capacity control mechanism.

Suction chamber, discharge room, swash plate room and multiple cylinder holes are formed with housing.Drive shaft can rotatably be supported on shell Body.Swash plate can rotate by the rotation of drive shaft in swash plate room.Linkage is arranged between drive shaft and swash plate, its Swash plate is allowed relative to the change with the angle of inclination for driving the orthogonal direction in axle center of drive shaft.The linkage has projection Part and transferring element.Protruding part is fixed on drive shaft in swash plate room.Transferring element in swash plate room with swash plate integratedly Set, and the rotation of protruding part is transferred to swash plate.Each piston is able to reciprocatingly be accommodated in each cylinder holes.Interpreter Structure is by the rotation of swash plate so as to make each piston be moved back and forth in each cylinder holes with stroke corresponding with angle of inclination.Volume controlled Mechanism has supply path, pumping path and control valve.Supply path will discharge room and be connected with swash plate room.Pumping path will Swash plate room connects with suction chamber.Control valve supplies the aperture of path by adjusting such that it is able to change the pressure in swash plate room.

In the compressor, if using controlling the valve to make the pressure in swash plate room for high pressure, angle of inclination diminishes, so that living The stroke of plug is reduced.Therefore, the compression volume of each turn of drive shaft diminishes.On the other hand, if using controlling the valve to make swash plate room Interior pressure is low pressure, then the angle of inclination of swash plate becomes big, so that the stroke increase of piston.Therefore, each turn of drive shaft Compression volume becomes big.So, in the compressor, refrigerant can be changed according to the operational situation of the vehicle for being carried etc. Discharge capacity.

But, as the compressor, in the case that pressure change in by swash plate room is to change angle of inclination, need To ensure to be enough to the refrigerant of the amount for changing angle of inclination in swash plate room.Therefore, compressor is easily because of larger swash plate room Maximization.

In addition, in the compressor, the blow-by gas of high pressure are inevitable towards the inflow in swash plate room.In addition, at this In compressor, the refrigerant in swash plate room is easily condensed because of the reduction of extraneous air temperature so as to produce hydrops in swash plate room.Cause This, in the compressor, it is difficult to suitably change angle of inclination.

Therefore, it was also proposed that such compressor disclosed in patent document 2.The compressor possesses can change angle of inclination Actuator and the controlling organization that is controlled to actuator.

Specifically, actuator has：Protruding part；Movable body, it integrally rotatably can engage with swash plate, and can Angle of inclination is changed along axis direction movement is driven；And control pressure chamber, it is divided by protruding part and movable body, and by Internal pressure moves movable body.Controlling organization has control access with control valve.Control access has：Transformation path, its Connected with control pressure chamber；Low-pressure passage, it is connected with suction chamber and swash plate room；And high-pressure passage, it is connected with discharge room. A part for transformation path is formed in drive shaft.The aperture of control valve adjustment transformation path, low-pressure passage and high-pressure passage. That is, control valve connects transformation path with low-pressure passage or high-pressure passage.

In the compressor, if control valve connects transformation path with high-pressure passage, with swash plate room phase in control pressure chamber Than as high pressure.Thus, the movable body of actuator is from away from protruding part, so that angle of inclination is reduced.Therefore, the stroke of piston Reduce, discharge capacity diminishes.On the other hand, if control valve connects transformation path with low-pressure passage, turn into control pressure chamber With the low pressure of swash plate room same degree.Thus, the movable body of actuator is close to protruding part, so that angle of inclination becomes big.Cause This, the stroke increase of piston, discharge capacity becomes big.

In the compressor, the pressure change in the control pressure chamber small due to carrying out volumetric ratio swash plate room, so with carry out The compressor of the pressure change in swash plate room is compared, the amount of the refrigerant needed for can reducing the change at angle of inclination, so as to It is enough to realize miniaturization.

In addition, in the compressor, due to changing angle of inclination by controlling the pressure change of pressure chamber, so blowby gas Body is difficult to be negatively affected to the change at angle of inclination towards the inflow in swash plate room, the hydrops in swash plate room.

Patent document 1：Japanese Unexamined Patent Publication 2002-213350 publications

Patent document 2：Japanese Unexamined Patent Application 52-131204 publications

But, in the compressor described in above-mentioned patent document 2, by driving axle center portion corresponding with the top dead centre of swash plate to determine Fixed plane definition is the first imaginary plane, and the movable body of actuator engages with swash plate on the second imaginary plane, second vacation Think plane it is orthogonal with the first imaginary plane and comprising drive axle center.More specifically, movable body and swash plate are by drive shaft There is being hinged ball and engaging for center in the heart.And, make movable body and be hinged active position that ball abuts with the inclination of swash plate The change of angle and change with the axially parallel generation of drive shaft.In addition, making to be hinged the active position that ball is abutted with swash plate It is identical.That is, in the compressor, even if the angle of inclination of swash plate produces change, active position is with the distance for driving axle center not yet Change.

Therefore, in the compressor, reduce angle of inclination when, it is necessary to increase swash plate room with control pressure chamber differential pressure (with Under, referred to as variable differential pressure.) so as to move movable body using larger thrust.That is, in the compressor, angle of inclination is reduced When movable body load it is larger.Therefore, in the compressor, the variable quantity of variable differential pressure during change angle of inclination is larger, It is difficult to the operational situation according to vehicle etc. promptly to change angle of inclination, so as to cause controlling to reduce.

In addition, in the compressor, because active position does not produce change with the distance in axle center is driven, so oblique in change During the angle of inclination of plate, the stroke of the driving axis direction of movable body is larger.Therefore, in the compressor, it is impossible to avoid major axis Change, therefore worry the carrying for vehicle etc..

The content of the invention

The present invention be in view of above-mentioned existing actual conditions and propose, its problem to be solved be provide one kind can Enough performances controlling higher can play the capacity variable type tilted-plate compressor of excellent carrying again.

Capacity variable type tilted-plate compressor of the invention is characterised by possessing：Housing, its be formed with swash plate room and Cylinder holes；Drive shaft, it can rotatably be supported on above-mentioned housing；Swash plate, it can be by the rotation of above-mentioned drive shaft upper State in swash plate room and rotate；Linkage, it is arranged between above-mentioned drive shaft and above-mentioned swash plate, and allow above-mentioned swash plate relative to With the change at the angle of inclination for driving the orthogonal direction in axle center of above-mentioned drive shaft；Piston, it can reciprocatingly be accommodated in Above-mentioned cylinder holes；Switching mechanism, it makes above-mentioned piston with stroke corresponding with above-mentioned angle of inclination by the rotation of above-mentioned swash plate Moved back and forth in above-mentioned cylinder holes；Actuator, it can change above-mentioned angle of inclination；And controlling organization, its above-mentioned rush of control Dynamic device,

Aforementioned link mechanism has：Protruding part, it is fixed on above-mentioned drive shaft in above-mentioned swash plate room；And transfer part Part, the rotation of above-mentioned protruding part is transferred to above-mentioned swash plate by it,

Above-mentioned actuator has：Above-mentioned protruding part；Movable body, it can be rotated integrally with above-mentioned swash plate, and being capable of edge Above-mentioned driving axis direction movement is so as to change above-mentioned angle of inclination；And control pressure chamber, its by above-mentioned protruding part with it is above-mentioned Movable body divide, and changed by above-mentioned controlling organization inside pressure so that above-mentioned movable body move,

Being formed with above-mentioned movable body can press the service portion of above-mentioned swash plate by the pressure in above-mentioned control pressure chamber,

It is formed with above-mentioned swash plate and is applied portion with above-mentioned service portion is abutted and is pressed,

Above-mentioned service portion is abutted with the above-mentioned portion that is applied in active position,

Above-mentioned active position is moved by the change at above-mentioned angle of inclination,

There is the top dead centre correspondence portion for making above-mentioned piston be located at top dead centre in the definition of above-mentioned swash plate,

Compared with above-mentioned active position when above-mentioned angle of inclination is minimum, above-mentioned work when above-mentioned angle of inclination is maximum With position closer to above-mentioned top dead centre correspondence portion.

In compressor of the invention, the rotation of protruding part is transferred to swash plate by the transferring element of linkage.And, The active position for making the service portion of movable body be abutted with the portion of being applied of swash plate is moved by the change at the angle of inclination of swash plate. Specifically, compared with active position when angle of inclination is minimum, active position when angle of inclination is maximum is closer to tiltedly The top dead centre correspondence portion of plate.

Therefore, in the compressor, even if producing change, effect position with the angle of inclination of the swash plate when angle of inclination is reduced Put compared with the situation for driving the distance in axle center also constant, even without variable differential pressure is increased to ensure larger thrust, also can Enough move movable body.That is, in the compressor, the load of the movable body for making angle of inclination become hour can be reduced.Therefore, exist In the compressor, the variable quantity of variable differential pressure during change angle of inclination is smaller, and easily the operational situation according to vehicle etc. is come fast Angle of inclination is changed fastly such that it is able to play controlling higher.

In addition, in the compressor, due to active position as described above by the change at the angle of inclination of swash plate and It is mobile, so in the case of their range of tilt angles identical, with active position and the feelings of the constant distance for driving axle center Condition is compared, and can reduce the stroke of the driving axis direction of movable body.Thus, in the compressor, the big of axial length can be suppressed Type.

Therefore, compressor of the invention can either play controlling higher and can play excellent carrying again.

In addition, for example, nor can not be using the structure for being linked service portion with the portion of being applied by connecting pin etc..But It is in this case, exist and cause that the posture of movable body produces the worry of change because of the structure of linking portion.In addition, also can The complex structure of compressor is caused because of the increase of part number of packages, and increases manufacturing cost.On the other hand, of the invention In compressor, when the change at angle of inclination of swash plate is carried out, movable body is only set directly to be abutted with swash plate and pressed it, So as to the posture of movable body is difficult to produce change.In addition, in the compressor, the complication of structure can be suppressed such that it is able to Realize the cheaper of manufacturing cost.

Controlling organization can have control access with control valve.Control access can have the transformation connected with control pressure chamber Low-pressure passage that path is connected with suction chamber or swash plate room and the high-pressure passage connected with discharge room.

It is preferred that movable body is inserted for drive shaft and can be chimeric with protruding part.In this case, protruding part with it is oblique Between plate, the space for being moved along driving axis direction for movable body can be suitably ensured.

In addition, movable body can have the cylindric movable cylinders portion for being formed as coaxial with axle center is driven.And, it is excellent Choosing, protruding part has a cylindric fixed cylindrical portion, the outer circumferential side shape of the fixed cylindrical portion of the cylindrical shape in movable cylinders portion As the cylindrical shape coaxial with axle center is driven, and ensure to control pressure chamber in movable cylinders portion.In this case, by by movably Cylindrical portion is chimeric with fixed cylindrical portion such that it is able to make movable body chimeric with protruding part.Further, since using fixed cylindrical portion And ensure to control pressure chamber in movable cylinders portion, it is possible to being properly formed control pressure between protruding part and movable body Room.

In addition, in this case, can be provided between movable cylinders portion and drive shaft and control pressure chamber is sealed The first containment member.Also, it is preferred that, it is provided between movable cylinders portion and fixed cylindrical portion and control pressure chamber is sealed The second containment member.Thereby, it is possible to suitably ensure the air-tightness of control pressure chamber.Additionally, as the first containment member and Second containment member, in addition to o-ring etc., it is also possible to use various seals.In addition, the first containment member and the second sealing Component can be same, it is also possible to different.

The thrust bearing of the thrust for bearing to act on piston can be provided between housing and protruding part.And, it is excellent Choosing, it is small and can be advanced in thrust bearing that movable cylinders portion is formed as diameter specific thrust bearing.

In this case, using thrust bearing, the suction that piston is acted on when can suitably support suction stroke counter is made Firmly, the compression reaction force of piston is acted on during compression travel.Further, since movable cylinders portion can be advanced to thrust bearing It is interior, even if so that the axial length of compressor is shorter, it is also possible to fully ensure for driving axis direction movement for movable body edge Space.

In addition, in compressor of the invention, it is preferable that service portion and the portion that is applied active position mutually put contact or Linear contact lay.In this case, the contact area of service portion and the portion that is applied can be reduced.Additionally, active position be applied portion Straight line residing for linear contact lay is orthogonal with the first imaginary plane for driving axle center to determine relative to the top dead centre correspondence portion by swash plate.Separately Outward, it is preferable that when making service portion be contacted with the portion point of being applied or during linear contact lay in active position, service portion be applied portion Abutting portion or be applied portion the abutting portion with service portion it is one square as curved surface.

In addition, can be suitably designed on movable body formed service portion position, on swash plate formed be applied portion Position.Particularly, in compressor of the invention, service portion and be applied portion can from drive the upward stop correspondence portion in axle center The lateral deviation heart.Also, it is preferred that, if angle of inclination diminishes, active position is to driving axle center side shifting.

In this case, the change at angle of inclination will not be hindered, is easily ensured for supplying between protruding part and swash plate Movable body is along the space for driving axis direction movement.Therefore, in the compressor, can either suppress compressor axial length it is large-scale Change, the big footpath of actuator can be made again such that it is able to be quickly removed movable body using enough thrust.

Service portion can have the acting surface extended along the direction orthogonal with axle center is driven.Also, it is preferred that, the portion's of being applied tool There is the convex portion for being protruded from swash plate and being abutted with acting surface.In this case, service portion can be made to be connect with the appropriate place in the portion that is applied Touch or linear contact lay.

It is preferred that, service portion is protruded from movable cylinders portion towards top dead centre correspondence portion.In this case, can make service portion with Portion is applied easily to abut.

It is preferred that, swash plate has：Swash plate main body, it is formed with the inserting hole passed through for drive shaft；And it is applied portion, one It is formed at swash plate main body body.In this case, the reduction of the part number of packages of compressor can be realized, so as to easily be manufactured And the reduction of manufacturing cost can be realized.

In addition, it is also preferred that swash plate has：Swash plate main body, it is formed with the inserting hole passed through for drive shaft；And be applied Portion, it is fixed on swash plate main body.In this case, it is possible to increase swash plate main body, be applied portion design the free degree.

In compressor of the invention, suction chamber and discharge room are could be formed with housing.Also, it is preferred that, suction chamber Connected with swash plate room.In this case, swash plate room can be made to be low pressure in the same manner as suction chamber.

In addition, controlling organization can have：Control access, it connects control pressure chamber with suction chamber and/or discharge room It is logical；And control valve, its aperture that can adjust control access.Also, it is preferred that, at least a portion of control access is formed in drive In moving axis.In this case, can either minimize controlling organization, pressure that again can suitably in Variation control pressure chamber, from And movable body can be made suitably to move.

Pressure control chamber is could be formed between housing and one end of drive shaft, the pressure control chamber is via control access And connect and change pressure by controlling valve with control pressure chamber.Also, it is preferred that, it is provided between housing and drive shaft to pressure The 3rd containment member that power adjustment room is sealed.

In this case, the pressure of pressure control chamber is changed using valve is controlled, so as to control the pressure chamber to move movable body. And, the air-tightness of pressure control chamber can be suitably ensured using the 3rd containment member.Additionally, the 3rd containment member with it is above-mentioned First, second containment member is identical, in addition to o-ring etc., it is also possible to use various seals.In addition, the 3rd containment member Can be same with first, second containment member, it is also possible to different.

Compressor of the invention can either play controlling higher and can play excellent carrying again.

Brief description of the drawings

Sectional view when Fig. 1 is the maximum capacity of the compressor of embodiment 1.

Fig. 2 is related to the compressor of embodiment 1, is the schematic diagram for representing controlling organization.

Fig. 3 is related to the compressor of embodiment 1, is the major part amplification view of the rear end part for representing drive shaft.

Fig. 4 is related to the compressor of embodiment 1, is the major part amplification view for representing actuator.

Fig. 5 is related to the compressor of embodiment 1, is the stereogram from forward observation for representing swash plate.

Sectional view when Fig. 6 is the minimum capacity of the compressor of embodiment 1.

Fig. 7 A are the amplification views of the major part of the compressor according to embodiment 1, show the angle of inclination of swash plate Service portion abuts the active position being applied at portion in the case of maximum.

Fig. 7 B are the amplification views of the major part of the compressor according to embodiment 1, when showing that angle of inclination is minimum Active position.

Fig. 8 is the coordinate diagram for representing angle of inclination and the relation of variable differential pressure.

Fig. 9 is the different signal for representing the compressor of embodiment 1 and the stroke of the movable body in the compressor of comparative example Figure.

Sectional view when Figure 10 is the maximum capacity of the compressor of embodiment 2.

Specific embodiment

Hereinafter, referring to the drawings to the embodiment 1,2 that the present invention embodies is illustrated.The compressor of embodiment 1,2 is Capacity variable type single head tilted-plate compressor.Above-mentioned compressor is equipped on vehicle, and the refrigeration for constituting air conditioner for vehicles is returned Road.

(embodiment 1)

As shown in figure 1, the compressor of embodiment 1 possesses：Housing 1；Drive shaft 3；Swash plate 5；Linkage 7；Multiple pistons 9；Multipair crawler shoe 11a, 11b；Actuator 13；And the controlling organization 15 shown in Fig. 2.Additionally, for the ease of illustrating, in figure The shape simplification of swash plate 5 is illustrated in 1.It is also identical on Fig. 6, Figure 10 described later.

As shown in figure 1, housing 1 has：Positioned at the procapsid 17 in the front of compressor；Positioned at the rear shell at the rear of compressor Body 19；Cylinder body 21 between procapsid 17 and back casing 19；And valve cell 23.

Procapsid 17 has：In the antetheca 17a that front extends along the above-below direction of compressor；And formed with antetheca 17a The perisporium 17b for being integrated and extending towards rear from the front of compressor.Procapsid 17 is using above-mentioned antetheca 17a and perisporium 17b And be formed as approximate cylinder shape with the end.In addition, using above-mentioned antetheca 17a and perisporium 17b, so as to be formed in procapsid 17 There is swash plate room 25.

The flange 17c protruded towards front is formed with antetheca 17a.Gland seal device 27 is provided with flange 17c.Separately Outward, the first axis hole 17d extended along the fore-and-aft direction of compressor is formed with flange 17c.Set in first axis hole 17d There is the first sliding bearing 29a.

The suction inlet 250 connected with swash plate room 25 is formed with perisporium 17b.Swash plate room 25 by the suction inlet 250 with Evaporator connection (not shown).

Back casing 19 is provided with a part for controlling organization 15.In addition, being formed with first pressure adjustment in back casing 19 Room 31a, suction chamber 33 and discharge room 35.First pressure adjustment room 31a is located at the core of back casing 19.Discharge room 35 Annularly positioned at the outer circumferential side of back casing 19.In addition, suction chamber 33 is in back casing 19 and in first pressure adjustment room 31a and row Go out between room 35 and be formed as ring-type.Discharge room 35 is connected with outlet (not shown).

In cylinder body 21, circumferentially equiangularly interval is formed with the cylinder holes 21a with the same number of piston 9.Each cylinder holes 21a's Front connects with swash plate room 25.In addition, in cylinder body 21, being formed with and the lift amount of aftermentioned inhalation reed valve 41a being limited Retaining groove 21b.

Also, in cylinder body 21, insertion be provided with not only connected with swash plate room 25 but also along compressor fore-and-aft direction extend the Two axis hole 21c.The second sliding bearing 29b is provided with the second axis hole 21c.In addition, being formed with spring housing 21d in cylinder body 21. Spring housing 21d is located between the axis hole 21c of swash plate room 25 and second.Return spring 37 is configured with spring housing 21d.The return Angle of inclination is that minimum swash plate 5 exerts a force towards the front of swash plate room 25 by spring 37.In addition, being formed with and swash plate in cylinder body 21 The suction passage 39 of the connection of room 25.

Valve cell 23 is arranged between back casing 19 and cylinder body 21.The valve cell 23 includes valve plate 40, suction valve plate 41, row Go out valve plate 43 and baffle plate 45.

In valve plate 40, discharge valve plate 43 and baffle plate 45, suction inlet 40a equal number of with cylinder holes 21a is formed with.Separately Outward, in valve plate 40 and suction valve plate 41, it is formed with outlet 40b equal number of with cylinder holes 21a.Each cylinder holes 21a is by each Suction inlet 40a and connected with suction chamber 33, and by each outlet 40b with discharge room 35 connect.Also, valve plate 40, Suction valve plate 41, discharge valve plate 43 and baffle plate 45, are formed with the first intercommunicating pore 40c and the second intercommunicating pore 40d.Suction chamber 33 with Suction passage 39 is connected by the first intercommunicating pore 40c.

Suction valve plate 41 is arranged at the preceding surface of valve plate 40.In the suction valve plate 41, being formed with multiple can be by elasticity The inhalation reed valve 41a for deforming and being opened and closed to each suction inlet 40a.In addition, discharge valve plate 43 is arranged at the rear table of valve plate 40 Face.In the discharge valve plate 43, multiple discharge reeds that can be opened and closed to each outlet 40b by elastic deformation are formed with Valve 43a.Baffle plate 45 is arranged at the rear surface of discharge valve plate 43.The lift amount of the baffle plate 45 limitation discharge leaf valve 43a.

Drive shaft 3 is inserted from flange 17c sides towards the rear side of housing 1.The front of drive shaft 3 quilt in flange 17c The e axle supporting of gland seal device 27, and by the first sliding bearing 29a e axle supportings in the first axis hole 17d.In addition, after drive shaft 3 Side is in the second axis hole 21c by the second sliding bearing 29b e axle supportings.So, drive shaft 3 with can around drive axle center O rotate Mode be supported on housing 1.And, being divided in the second axis hole 21c and between the rear end of drive shaft 3 has second pressure to adjust Whole room 31b.The second pressure is adjusted room 31b and is connected with first pressure adjustment room 31a by the second intercommunicating pore 40d.By first, Second pressure adjustment room 31a, 31b are formed with pressure control chamber 31.

As shown in figure 3, being formed with annular groove 3c, 3d in the rear end of drive shaft 3.O is respectively arranged with each annular groove 3c, 3d Type ring 49a, 49b.Pressure control chamber 31 is sealed by each o-ring 49a, 49b, so that swash plate room 25 does not connect with pressure control chamber 31 It is logical.Above-mentioned each o-ring 49a, 49b is equivalent to the 3rd containment member of the invention.

As shown in figure 1, being provided with linkage 7, swash plate 5 and actuator 13 in drive shaft 3.Linkage 7 includes convex Plate 51, a pair of the male arms 53 for being formed at protrusive board 51 and a pair of swash plate arms 5e, 5f.Protrusive board 51 is equivalent to lug boss of the invention Part.In addition, swash plate arm 5e, 5f is equivalent to transferring element of the invention.

Protrusive board 51 is formed as approximate annular shape.The protrusive board 51 is pressed into drive shaft 3, and can integratedly be revolved with drive shaft 3 Turn.The protrusive board 51 is located at the front in swash plate room 25, and is configured at the position than swash plate 5 on the front.In addition, protrusive board 51 with Thrust bearing 55 is provided between antetheca 17a.

As shown in figure 4, being arranged with the cylindric fixed cylindrical portion extended along the fore-and-aft direction of protrusive board 51 in protrusive board 51 51a.As shown in figure 1, the fixation cylindrical portion 51a is extended in protrusive board 51 from the rear end face of protrusive board 51 being in thrust bearing 55 The position of side.

Each male arms 53 extends from protrusive board 51 towards rear.In addition, being formed in protrusive board 51 and the position between each male arms 53 There is cam surface 51b.Additionally, for convenience of description, only figure shows the side of male arms 53 in Fig. 1 etc..

As shown in figure 5, swash plate 5 has swash plate main body 50, swash plate arm 5e, 5f and convex portion 5g.Convex portion 5g is equivalent to this That invents is applied portion.

The writing board shape annular in shape of swash plate main body 50, it there is also defined in addition to preceding surface 5a and rear surface 5b Each piston 9 is set to be located at the top dead centre correspondence portion T of top dead centre.In addition, being formed with what is protruded towards the front of swash plate 5 in preceding surface 5a Limiting unit 5c.As shown in figure 1, limiting unit 5c is abutted when the angle of inclination of swash plate 5 becomes maximum with protrusive board 51.In addition, Swash plate main body 50 is formed with inserting hole 5d.There is drive shaft 3 in inserting hole 5d inserts.

As shown in figure 5, preceding surface 5as of each swash plate arm 5e, 5f in swash plate main body 50, is formed at from driving axle center O to swash plate 5 top dead centre correspondence portion T sides eccentric position.Each swash plate arm 5e, 5f the past surface 5a extends towards front.

Convex portion 5g the pasts surface 5a is protrusively provided towards front, and is formed as one with swash plate main body 50.Convex portion 5g Be formed as approximate hemispherical, its from drive axle center O be located to the top dead centre correspondence portion T lateral deviations heart of swash plate 5 swash plate arm 5e with it is oblique Between plate arm 5f.

As shown in figure 1, inserted between each male arms 53 by by swash plate arm 5e, 5f, so that protrusive board 51 links with swash plate 5. Thus, swash plate 5 being capable of the rotation in swash plate room 25 together with protrusive board 51.Each front of each swash plate arm 5e, 5f respectively with cam Face 51b is abutted.

Further, since protrusive board 51 links with swash plate 5, so that each swash plate arm 5e, 5f and convex portion 5g is located at from driving axle center O To the top dead centre correspondence portion T sides eccentric position of swash plate 5.It is additionally, since swash plate arm 5e, 5f to be slided in cam surface 51b, so that tiltedly Plate 5 for itself relative to the angle of inclination for driving the orthogonal directions of axle center O, can side substantially maintain top dead centre correspondence portion T Position, while the maximum tilt angle shown in the figure changes to the minimum cant shown in Fig. 6.

As shown in figure 4, actuator 13 includes protrusive board 51, movable body 13a and control pressure chamber 13b.

Movable body 13a driven shafts 3 are inserted, and being capable of side and the driving axle center O directions shifting of the sliding contact edge of drive shaft 3 It is dynamic.Movable body 13a is formed as the cylindrical shape coaxial with drive shaft 3, and is formed as smaller than thrust bearing 55 shown in Fig. 1 straight Footpath.As shown in figure 4, movable body 13a has the first movable cylinders portion 131, the second movable cylinders portion 132 and the 3rd movable circle Cylinder portion 133.First movable cylinders portion 131 is located at the rear end side of movable body 13a, and it is formed as the straight of minimum in movable body 13a Footpath.The front end in the second movable cylinders portion 132 and the first movable cylinders portion 131 is continuous, and is formed as diameter towards movable body 13a's Front gradually expands.The front end in the 3rd movable cylinders portion 133 and the second movable cylinders portion 132 is continuous, and towards movable body 13a's Front extends.3rd movable cylinders portion 133 is formed as maximum diameter in movable body 13a.

In addition, being integrally formed with service portion 134 in the rear end in the first movable cylinders portion 131.As shown in figure 1, service portion 134 vertically extend from driving axle center O sides towards the top dead centre correspondence portion T sides of swash plate 5, and from driving axle center O to the upper of swash plate 5 The stop correspondence portion T lateral deviation hearts.The service portion 134 has the acting surface 134a for being formed as plane.As shown in figure 8, acting surface 134a Contacted with convex portion 5g points in active position F.Thus, movable body 13a can be rotated integrally with protrusive board 51 and swash plate 5.Here, by In convex portion 5g and service portion 134 from the top dead centre correspondence portion T lateral deviation hearts of the axle center O to swash plate 5 is driven, so as shown in figure 1, making With position F also from the driving top dead centre correspondence portion T lateral deviation hearts of the axle center O to swash plate 5.

Movable body 13a enters solid by making the second movable cylinders portion 132 and the 3rd movable cylinders portion 133 shown in Fig. 4 Determine in cylindrical portion 51a such that it is able to (reference picture 1) chimeric with protrusive board 51.And, in the second movable cylinders portion 132 and the 3rd Movable cylinders portion 133 enter fixed cylindrical portion 51a it is most deep in the state of, the 3rd movable cylinders portion 133 is in fixed cylindrical portion 51a Reach the position of the inner side of thrust bearing 55.

As shown in figure 4, control pressure chamber 13b is formed at the second movable cylinders portion 132, the 3rd movable cylinders portion 133, fixed circle Between cylinder portion 51a and drive shaft 3.In addition, the inner peripheral surface in the first movable cylinders portion 131 is formed with annular groove 131a, The outer peripheral face in three movable cylinders portions 133 is formed with annular groove 133a.It is respectively arranged with above-mentioned each annular groove 131a, 133a O-shaped Ring 49c, 49d., equivalent to the first containment member of the invention, o-ring 49d is equivalent to the of the invention second sealing for o-ring 49c Component.Control pressure chamber 13b is sealed using above-mentioned o-ring 49c, 49d, so that it is guaranteed that the air-tightness in control pressure chamber 13b.

As shown in figure 1, being formed with drive shaft 3：Prolong along driving axle center O directions towards front end from the rear end of drive shaft 3 Shen Zhou roads 3a；And radially extended from the front end of axle road 3a and drive shaft 3 outer peripheral face open pathway 3b.Axle road 3a Rear end opened in pressure control chamber 31.On the other hand, pathway 3b is opened in control pressure chamber 13b.Pressure control chamber 31 and control Pressure chamber 13b is connected by above-mentioned axle road 3a and pathway 3b.

Drive shaft 3 is connected by being formed at the threaded portion 3e of front end with belt wheel (not shown) or electromagnetic clutch.

Each piston 9 is accommodated in each cylinder holes 21a respectively, and can be moved back and forth in each cylinder holes 21a.Using above-mentioned each work Plug 9 has discharge chambe 57 with valve cell 23 so as to be divided in each cylinder holes 21a.

In addition, being arranged with holding section 9a respectively in each piston 9.Hemispherical crawler shoe is respectively arranged with the 9a of the holding section 11a、11b.Each crawler shoe 11a, 11b are converted to moving back and forth for each piston 9 by swash plate 5.Above-mentioned each crawler shoe 11a, 11b phase When in switching mechanism of the invention.So, each piston 9 can be with stroke corresponding with the angle of inclination of swash plate 5 respectively in cylinder holes Moved back and forth in 21a.Additionally, in addition to crawler shoe 11a, 11b, it is also possible to using the rear surface 5b sides of swash plate main body 50 via Thrust bearing and support oscillating deck and oscillating deck is connected with each piston 9 swing type switching mechanism using connecting rod.

As shown in Fig. 2 controlling organization 15 have low-pressure passage 15a, high-pressure passage 15b, control valve 15c, throttle orifice 15d, Axle road 3a and pathway 3b.The present invention is formed with by above-mentioned low-pressure passage 15a, high-pressure passage 15b, axle road 3a and pathway 3b Control access.In addition, axle road 3a and pathway 3b as transformation path function.

Low-pressure passage 15a is connected with pressure control chamber 31 and suction chamber 33.Thus, control pressure chamber 13b, pressure control chamber 31 and suction chamber 33 interconnected state is turned into by low-pressure passage 15a, axle road 3a and pathway 3b.High pressure is led to Road 15b is connected with pressure control chamber 31 and discharge room 35.Control pressure chamber 13b, pressure control chamber 31 and discharge room 35 pass through High-pressure passage 15b, axle road 3a and pathway 3b and connect.In addition, high-pressure passage 15b is provided with throttle orifice 15d, so that right The flow of the refrigerant circulated in high-pressure passage 15b is throttled.

Control valve 15c is arranged at low-pressure passage 15a.Control valve 15c can be based on the pressure in suction chamber 33 to low The flow of the refrigerant of pressure path 15a circulations is adjusted.

In the compressor, the pipe arrangement being connected with evaporator, and phase are connected with relative to the suction inlet 250 shown in Fig. 1 The pipe arrangement being connected with condenser is connected with for outlet.Condenser is connected via pipe arrangement and expansion valve with evaporator.By Above-mentioned compressor, evaporator, expansion valve, condenser etc. constitute the refrigerating circuit of air conditioner for vehicles.Additionally, omitting evaporation The diagram of device, expansion valve, condenser and each pipe arrangement.

In the compressor for constituting as described above, rotated by drive shaft 3, so that swash plate 5 rotates, and each piston 9 Moved back and forth in each cylinder holes 21a.Therefore, discharge chambe 57 accordingly changes volume with the stroke of piston 9.Therefore, from evaporator The refrigerant of swash plate room 25 is sucked into by suction inlet 250 from suction passage 39 via suction chamber 33, and in discharge chambe 57 Compressed.Then, the refrigerant being compressed by discharge chambe 57 is discharged to discharge room 35, and is arranged from outlet to condenser Go out.

During this period, in the compressor, there is the work that the angle of inclination for making swash plate 5 diminishes to the effect such as swash plate 5, protrusive board 51 Plug compression stress.And, in the compressor, the stroke of piston 9 is increased and decreased by changing the angle of inclination of swash plate 5, from And volume controlled can be carried out.

Specifically, in controlling organization 15, if the control valve 15c shown in Fig. 2 makes the refrigeration in low-pressure passage 15a circulations The flow increase of agent, the then refrigerant discharged in room 35 is difficult to be accumulated in pressure via high-pressure passage 15b and throttle orifice 15d In adjustment room 31.Therefore, the pressure of control pressure chamber 13b is almost equal with suction chamber 33.Therefore, as shown in figure 1, because acting on tiltedly The piston compression stress of plate 5, so as in actuator 13, control the volume reducing of pressure chamber 13b, and movable body 13a is in drive shaft From the side of swash plate 5 towards the side shifting of protrusive board 51 on heart O directions.And, in movable body 13a, the second movable cylinders portion 132 and Three movable cylinders portion 133 enters in fixed cylindrical portion 51a.

In addition simultaneously, in the compressor, swash plate 5 is by acting on the piston compression stress and return spring 37 of itself Active force, so as to be slided in cam surface 51b in the way of making each swash plate arm 5e, 5f away from axle center O is driven.Therefore, in swash plate 5 In, the position of top dead centre correspondence portion T is substantially maintained on one side, while making lower dead center laterally swing clockwise.So, in the pressure In contracting machine, swash plate 5 increases relative to the angle of inclination in the direction orthogonal with the driving axle center O of drive shaft 3.Thus, in the compression In machine, the stroke of piston 9 increase, each turn of drive shaft 3 of discharge capacity becomes big.Additionally, the inclination of the swash plate 5 shown in Fig. 1 Angle is the maximum tilt angle in the compressor.And, swash plate 5 be in maximum tilt angle when, each swash plate arm 5e, 5f with Cam surface 51b is abutted in first position P1.

On the other hand, if the control valve 15c shown in Fig. 2 reduces the flow of the refrigerant in low-pressure passage 15a circulations, Refrigerant in discharge room 35 is easily accumulated in pressure control chamber 31 via high-pressure passage 15b and throttle orifice 15d.Cause This, the pressure of control pressure chamber 13b is almost equal with discharge room 35, and the pressure ratio swash plate room 25 of control pressure chamber 13b is high.Therefore, such as Shown in Fig. 6, in actuator 13, the volume increase of control pressure chamber 13b, and movable body 13a sides are from away from protrusive board 51, side direction The side of swash plate 5 and drive axle center O side move up.

Thus, in the compressor, the acting surface 134a of service portion 134 is in active position F with by convex portion 5g towards swash plate The mode of the rear pressing of room 25 plays a role.Therefore, in cam surface in the way of each swash plate arm 5e, 5f is to approach driving axle center O 51b is slided, and in swash plate 5, the position of top dead centre correspondence portion T is substantially maintained on one side, while making lower dead center laterally counterclockwise Direction swings.So, in the compressor, inclination angle of the swash plate 5 relative to the direction orthogonal with the driving axle center O of drive shaft 3 Degree is reduced.Thus, in the compressor, the stroke of piston 9 is reduced, and each turn of drive shaft 3 of discharge capacity diminishes.In addition, Because angle of inclination is reduced, so that swash plate 5 is abutted with return spring 37.Additionally, the angle of inclination of the swash plate 5 shown in Fig. 6 is this The minimum cant of compressor.And, when swash plate 5 is in minimum cant, each swash plate arm 5e, 5f and cam surface 51b Abutted in second place P2.

So, in the compressor, using actuator 13, by the small control pressure chamber 13b in volumetric ratio swash plate room 25 Pressure change changes the angle of inclination of swash plate 5.Therefore, in the compressor, with by the pressure change in swash plate room 25 come The compressor for carrying out the change at angle of inclination is compared, the amount of the refrigerant needed for can reducing the change at angle of inclination.Therefore, exist In the compressor, the maximization of swash plate room 25 and then housing 1 can be suppressed.

In addition, in the compressor, the rotation of protrusive board 51 is transferred to swash plate 5 by each swash plate arm 5e, 5f of linkage 7, And the position for not only substantially having maintained the top dead centre correspondence portion T of swash plate 5 but also the change for allowing angle of inclination.In addition, movable body 13a The convex portion 5g of service portion 134 and swash plate 5 is respectively from driving axle center O to the corresponding portion T lateral deviation hearts of the top dead centre of swash plate 5.When above-mentioned work With the acting surface 134a and convex portion 5g in portion 134 when active position F points are contacted and reduce the angle of inclination of swash plate 5, acting surface 134a is pressed convex portion 5g.And, active position F is moved with the change at angle of inclination.

Specifically, as shown in Figure 7 A, in the compressor, in the case of angle of inclination is for maximum, active position F Positioned at the top dead centre correspondence portion T sides of swash plate 5.Then, angle of inclination diminishes, and each swash plate arm 5e, 5f abut the position at cam surface 51b Put towards second place P2 side shiftings.Therefore, in the compressor, as shown in the white arrow of Fig. 7 B, if the inclination angle of swash plate 5 Degree diminishes, then active position F directions drive axle center O side shiftings.In other words, active position F when angle of inclination is maximum with incline Active position F when rake angle is minimum is compared, closer to the top dead centre correspondence portion T of swash plate 5.Here, in the compressor, i.e., Make in the case where angle of inclination is for minimum, active position F is with will not also crossing driving axle center O to portion T sides corresponding with top dead centre An opposite side shifting.

Therefore, in the compressor, when angle of inclination is reduced, and active position F and the constant distance for driving axle center O Situation is compared, even if not increasing variable differential pressure to ensure larger thrust, it is also possible to move movable body 13a.That is, in the pressure In contracting machine, the load of the movable body 13a for making angle of inclination become hour can be reduced.Therefore, in the compressor, inclination angle is changed The variable quantity of variable differential pressure when spending diminishes, and easily the operational situation according to the vehicle for being carried promptly changes inclination angle Degree such that it is able to play controlling higher.

In addition, in the compressor, because active position F is moved because of the change at the angle of inclination of swash plate 5 as described above It is dynamic, so in the case of range of tilt angles identical, and active position F and the constant distance of driving axle center O compressor phase Than the stroke in the driving axle center O directions of movable body 13a diminishes.Thus, in the compressor, the maximization of axial length can be suppressed. For above-mentioned each effect, more specifically illustrated by the contrast with comparative example.

The compression mechanism of comparative example turns into, the swash plate 5 and movable body 13a of the compressor of part change embodiment 1, and It is not provided with convex portion 5g and service portion 134.Thus, in the compressor of comparative example, the first movable cylinders portion of movable body 13a 131 rear end abuts around inserting hole 5d with preceding surface 5a.Therefore, in the compressor of comparative example, movable body 13a with it is oblique Plate 5 is being generally in the position abutting driven on the O of axle center.Thus, in the compressor, when the angle of inclination of swash plate 5 is changed, The active position of movable body 13a and swash plate 5 abreast produces change with axle center O directions are driven.That is, in the compressor of comparative example In, even if in the case where angle of inclination generates change, active position is also constant without producing change with the distance of driving axle center O Change.

Therefore, in the compressor of comparative example, as shown in the coordinate diagram of Fig. 8, when angle of inclination is reduced, it is necessary to increase can Become differential pressure and move movable body 13a using larger thrust.On the other hand, in the compressor of embodiment 1, as described above that Sample, even if not increasing variable differential pressure to ensure larger thrust, it is also possible to move movable body 13a.Therefore, in embodiment 1 Compressor in, required variable differential pressure diminishes and generally uniform on the whole when can make change angle of inclination.

In addition, as shown in figure 9, in the compressor of comparative example, in the state of being maximum for angle of inclination in the figure Swash plate 5 (with reference to double dot dash line), when it is minimum state it is indexed to angle of inclination, movable body 13a is needed along drive shaft Heart O directions displacement S2.

On the other hand, it is the swash plate 5 in the state of maximum for angle of inclination in the compressor of embodiment 1, makes to incline When rake angle is indexed to the state of minimum, as long as movable body 13a is along axle center O directions displacement S1 is driven, and it is enough.That is, embodiment Compared with the compressor of comparative example, the stroke in the driving axle center O directions of movable body 13a diminishes 1 compressor.

Therefore, the compressor of embodiment 1 can either play controlling higher and can play excellent carrying again.

Particularly in the compressor, because movable body 13a is directly supported via service portion 134 and convex portion 5g with swash plate 5 Connect and it is pressed, so the direction for acting on the load of swash plate 5 is difficult to produce change.Therefore, in the compressor, can Kinetoplast 13a easily presses swash plate 5 towards driving axle center O directions, so that movable body 13a can stably change inclining for swash plate 5 Rake angle.In addition, in the compressor, due to the stable posture of movable body 13a, so being also difficult to produce in control pressure chamber 13b Pressure leakage.

In addition, in the compressor, when the change at angle of inclination of swash plate 5 is carried out, only make movable body 13a directly with tiltedly Plate 5 abuts and it is pressed, and does not utilize connecting pin etc. to link service portion 134 and convex portion 5g.Therefore, in the compressor In, cause that the posture of movable body 13a produces the worry of change in the absence of the structure because of linking portion, and carrying out inclination angle During the change of degree, the posture of movable body 13a is difficult to produce change.In addition, in the compressor, the complexity of structure can be suppressed Change such that it is able to realize the cheaper of manufacturing cost.

Also, in the compressor, because movable body 13a is inserted for drive shaft 3, and in fixed cylindrical portion 51a storages Movable body 13a such that it is able to which movable body 13a is chimeric with protrusive board 51.Here, in the compressor, the 3rd of movable body 13a can Dynamic cylindrical portion 133 enters to the position of the inner side of thrust bearing 55 in fixed cylindrical portion 51a.Therefore, in the compressor, both Axial length can be shortened, can suitably be ensured between protrusive board 51 and swash plate 5 again for driving axle center O side for movable body 13a edges To mobile space.In addition, in the compressor, due to being provided with thrust bearing 55, it is possible to suitably supporting role in The suction reaction force of piston 9, compression reaction force.

In addition, in the compressor, using fixed cylindrical portion 51a so as to be fitted between protrusive board 51 and movable body 13a Locality forms control pressure chamber 13b.And, in the compressor, using the first, the 3rd movable cylinders portion 131 that is respectively arranged at, 133 o-ring 49c, 49d, so as to suitably ensure to control the air-tightness of pressure chamber 13b.

Also, in the compressor, service portion 134 and convex portion 5g are from driving axle center O to top dead centre correspondence portion T lateral deviations The heart, and if the angle of inclination of swash plate 5 diminish, active position F as described above to drive axle center O side shiftings.Therefore, in the pressure In contracting machine, the change at angle of inclination will not be hindered, easily ensured between protrusive board 51 and swash plate 5 for being driven for movable body 13a edges The space of moving axis heart O directions movement.Therefore, in the compressor, the big footpath of actuator 13 can be made such that it is able to using enough Thrust be quickly removed movable body 13a.At this point, in the compressor, it is also possible to according to the operational situation of vehicle Promptly to change angle of inclination.

In addition, in the compressor, top dead centre correspondence portion of the service portion 134 from the first movable cylinders portion 131 towards swash plate 5 T is protruded, and is formed as one with movable body 13a.In addition, being formed with acting surface 134a in service portion 134.Therefore, in the compression In machine, on from driving axle center O to top dead centre correspondence portion T sides eccentric position, acting surface 134a can be made easy with convex portion 5g Ground is abutted.Here, because convex portion 5g is formed as prominent in approximate hemispherical ground, it is possible to making acting surface 134a and convex portion 5g suitable Work as point contact.Therefore, in the compressor, the contact area of acting surface 134a and convex portion 5g can be reduced, so that swash plate 5 Easily change angle of inclination.

Also, convex portion 5g is integrally formed in the preceding surface 5a of swash plate main body 50.Therefore, in the compressor, Neng Goushi The reduction of existing part number of packages, so as to easily be manufactured and the reduction of manufacturing cost can be realized.

In addition, in the compressor, swash plate room 25 is connected with suction chamber 33 by suction passage 39.Thus, in the pressure In contracting machine, swash plate room 25 can be made to be low pressure in the same manner as suction chamber 33.

Also, controlling organization 15 is adjusted by controlling the aperture of valve 15c, so as to adjust in pressure control chamber 31 and then control Pressure in pressure chamber 13b processed.And, axle road 3a and pathway 3b are formed in drive shaft 3.Thus, in the compressor, can The pressure for making controlling organization 15 minimize and can suitably in Variation control pressure chamber 13b such that it is able to make movable body 13a appropriate Ground is mobile.

In addition, in the compressor, using o-ring 49a, 49b of the rear end for being arranged at drive shaft 3, so that suitably true Packing pressure adjusts the air-tightness of room 31.

(embodiment 2)

As shown in Figure 10, in the compressor of embodiment 2, swash plate 5 has swash plate main body 50, swash plate arm 5e, 5f, Yi Jijie Contact portion part 59.The contact component 59 also corresponds to of the invention be applied portion.

Contact component 59 by with swash plate main body 50 for split in the way of formed.Preceding table of the contact component 59 in swash plate main body 50 Face 5a is installed between each swash plate arm 5e, 5f, and positioned at from driving axle center O to the position of the top dead centre correspondence portion T lateral deviation hearts of swash plate 5 Put.

The convex portion 59a protruded towards front is formed with the contact component 59.Convex portion 59a is formed as approximate hemispherical. Convex portion 59a is contacted in active position F with the acting surface 134a points of service portion 134.So, in the compressor, by acting surface 134a and convex portion 59a, service portion 134 and contact component 59 are from driving axle center O to the corresponding portion T lateral deviation hearts of the top dead centre of swash plate 5 Position abut.The other structures of the compressor are identical with the compressor of embodiment 1, attached for identical structure mark identical Icon is remembered and omits the detailed description related to structure.

In the compressor, because swash plate 5 and contact component 59 are split, it is possible to improving swash plate main body 50, contact The free degree of the design of part 59.Other effects of the compressor are identical with the compressor of embodiment 1.

More than, according to embodiment 1,2, the present invention is described, but the present invention is not limited to above-described embodiment 1,2, Certainly carried out in the range of its purport appropriate change and be applied that can not depart from.

For example, in the compressor of embodiment 1,2, it is also possible to be configured at the angle of inclination of swash plate 5 from maximum state During being decreased to predetermined angular, active position F is being changed into minimum cant towards axle center O side shiftings are driven from predetermined angular Period, active position F is not moved.

Alternatively, it is also possible to convex portion 5g, convex portion 59a are formed as into plane, and the acting surface 134a of service portion 134 is formed It is curved.Thereby, it is possible to make convex portion 5g, convex portion 59a in active position F and the linear contact lay of service portion 134.

Also, for controlling organization 15, it is also possible to be configured to set control valve 15c in high-pressure passage 15b, and in low pressure Path 15a sets throttle orifice 15d.In this case, using valve 15c is controlled, the high pressure in high-pressure passage 15b circulations can be adjusted Refrigerant flow.Thereby, it is possible to make control pressure chamber 13b rapidly become high pressure by the high pressure in discharge room 35, and can It is compressed the rapid reduction of capacity.Alternatively, it is also possible to replace control valve 15c ground, set logical with low-pressure passage 15a and high pressure The triple valve of road 15b connections, and by adjusting the aperture of triple valve so that adjust in low-pressure passage 15a, high-pressure passage The flow of the refrigerant of circulation in 15b.

Industrial utilization possibility

The present invention can be applied to air-conditioning device etc..

The explanation of reference

1 ... housing；3 ... drive shafts；3a ... axles road (control access)；3b ... pathways (control access)；5 ... swash plates；5d… Inserting hole；5e, 5f ... swash plate arm (transferring element)；5g ... convex portions (are applied portion)；7 ... linkages；9 ... pistons；11a、 11b ... crawler shoes (switching mechanism)；13 ... actuators；13a ... movable bodys；13b ... controls pressure chamber (control access)；15 ... control machines Structure；15a ... low-pressure passages (control access)；15b ... high-pressure passages (control access)；15c ... controls valve；25 ... swash plate rooms； 31 ... pressure control chambers；33 ... suction chambers；35 ... discharge rooms；21a ... cylinder holes；49a, 49b ... o-ring (the 3rd containment member)； 49c ... o-rings (the first containment member)；49d ... o-rings (the second containment member)；51 ... protrusive boards (protruding part)；Gu 51a ... Determine cylindrical portion；55 ... thrust bearings；59 ... contact components (are applied portion)；59a ... convex portions；131 ... first movable cylinders portions (can Dynamic cylindrical portion)；132 ... second movable cylinders portions (movable cylinders portion)；133 ... the 3rd movable cylinders portions (movable cylinders portion)； 134 ... service portions；F ... active positions；O ... drives axle center；T ... top dead centre correspondences portion.

Claims (14)

1. a kind of capacity variable type tilted-plate compressor, it is characterised in that possess：

Housing, it is formed with swash plate room and cylinder holes；

Drive shaft, it can rotatably be supported on the housing；

Swash plate, it can rotate by the rotation of the drive shaft in the swash plate room；

Linkage, it is arranged between the drive shaft and the swash plate, and allow the swash plate relative to the driving The change at the angle of inclination for driving the orthogonal direction in axle center of axle；

Piston, it can reciprocatingly be accommodated in the cylinder holes；

Switching mechanism, it makes the piston with stroke corresponding with the angle of inclination described by the rotation of the swash plate Moved back and forth in cylinder holes；

Actuator, it can change the angle of inclination；And

Controlling organization, its described actuator of control,

The linkage has：Protruding part, it is fixed on the drive shaft in the swash plate room；And transferring element, The rotation of the protruding part is transferred to the swash plate by it；

The actuator has：The protruding part；Movable body, it can be rotated integrally with the swash plate, and can be along described Axis direction movement is driven so as to change the angle of inclination；And control pressure chamber, it is movable with described by the protruding part Body is divided, and by by the controlling organization changing internal pressure so that movable body movement,

Being formed with the movable body can press the service portion of the swash plate by the pressure in the control pressure chamber,

It is formed with the swash plate and is applied portion with the service portion is abutted and is pressed,

The service portion is abutted with the portion that is applied in active position,

The active position is moved by the change at the angle of inclination,

There is the top dead centre correspondence portion for making the piston be located at top dead centre in swash plate definition,

Compared with the active position when angle of inclination is minimum, the effect position when angle of inclination is maximum Put closer to the top dead centre correspondence portion.

2. capacity variable type tilted-plate compressor according to claim 1, it is characterised in that

The drive shaft passes through the movable body, and the movable body can be chimeric with the protruding part.

3. capacity variable type tilted-plate compressor according to claim 2, it is characterised in that

The movable body have be formed as the cylindric movable cylinders portion coaxial with the driving axle center,

The protruding part has cylindric fixed cylindrical portion, and the fixed cylindrical portion of the cylindrical shape is in the movable cylinders portion Outer circumferential side is formed as the cylindrical shape coaxial with the driving axle center, and the control pressure chamber is ensured in the movable cylinders portion.

4. capacity variable type tilted-plate compressor according to claim 3, it is characterised in that

The the first sealing structure sealed to the control pressure chamber is provided between the movable cylinders portion and the drive shaft Part,

Second sealed to the control pressure chamber is provided between the movable cylinders portion and the fixed cylindrical portion close Envelope component.

5. the capacity variable type tilted-plate compressor according to claim 3 or 4, it is characterised in that

The thrust bearing of the thrust for bearing to act on the piston is provided between the housing and the protruding part,

It is smaller than the thrust bearing and can be advanced in the thrust bearing that the movable cylinders portion is formed as diameter.

6. the capacity variable type tilted-plate compressor according to any one of Claims 1 to 4, it is characterised in that

The service portion is contacted or linear contact lay with the portion's mutual point on the active position that is applied.

7. capacity variable type tilted-plate compressor according to claim 6, it is characterised in that

The service portion and the portion that is applied from the driving axle center to the top dead centre correspondence portion lateral deviation heart,

If the angle of inclination diminishes, the active position is to driving axle center side shifting.

8. capacity variable type tilted-plate compressor according to claim 7, it is characterised in that

The service portion has the acting surface extended along the direction orthogonal with the driving axle center,

The portion of being applied has the convex portion for being protruded from the swash plate and being abutted with the acting surface.

9. the capacity variable type tilted-plate compressor according to claim 7 or 8, it is characterised in that

The movable body have be formed as the cylindric movable cylinders portion coaxial with the driving axle center,

The service portion is protruded from the movable cylinders portion towards the top dead centre correspondence portion.

10. the capacity variable type tilted-plate compressor according to any one of Claims 1 to 4, it is characterised in that

The swash plate has：Swash plate main body, it is formed with the inserting hole passed through for the drive shaft；And it is described be applied portion, It is integrally formed in the swash plate main body.

The 11. capacity variable type tilted-plate compressor according to any one of Claims 1 to 4, it is characterised in that

The swash plate has：Swash plate main body, it is formed with the inserting hole passed through for the drive shaft；And it is described be applied portion, It is fixed on the swash plate main body.

The 12. capacity variable type tilted-plate compressor according to any one of Claims 1 to 4, it is characterised in that

Suction chamber and discharge room are formed with the housing,

The suction chamber is connected with the swash plate room.

13. capacity variable type tilted-plate compressors according to claim 12, it is characterised in that

The controlling organization has：Control access, it controls pressure chamber and the suction chamber and/or the discharge room by described Connection；And control valve, its aperture that can adjust the control access,

At least a portion of the control access is formed in the drive shaft.

14. capacity variable type tilted-plate compressors according to claim 13, it is characterised in that

Pressure control chamber is formed between one end of the housing and the drive shaft, the pressure control chamber is via the control Path and connect with the control pressure chamber and controls valve to change pressure by described,

The 3rd containment member sealed to the pressure control chamber is provided between the housing and the drive shaft.