JP2010090783A - Variable displacement type compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the reliability of regulating the maximum inclination angle of a swash plate to a prescribed angle. <P>SOLUTION: A balance weight 19 is integrally formed on the opposing surface 170 of the swash plate 17. A movable projection part 27 is attached to the arc end of the balance weight 19. The projection direction of the movable projection part 27 is in parallel with imaginary flat surfaces Hd, Ht and perpendicular to a rotary axis line 141, the tip 271 of the movable projection part 27 can abut on the inner surface 28 of a cam surface forming body 16. The inner surface 28 is flat and the flat inner surface 28 is in parallel with the rotary axis line 141 of the rotary axis 14. The maximum inclination angle of the swash plate 17 is regulated through the abutment of the tip 271 of the movable projection part 27 on the inner surface 28 of the cam surface forming body 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a variable capacity compressor including a swash plate that obtains a driving force from a rotary shaft and rotates integrally with the rotary shaft, and a pinless tilt angle variable mechanism that supports the swash plate with a variable tilt angle.

  The pinless tilt angle variable mechanism is disclosed in, for example, Patent Document 1. The pinless tilt variable mechanism disclosed in Patent Document 1 includes a protrusion provided on a rotor (rotating support), an arm provided on a swash plate so as to engage with the protrusion, and a slidable contact with the tip of the arm. And a cam member provided on the head. The rotation of the rotor is transmitted to the swash plate through the engagement between the protrusion and the arm, and the swash plate rotates integrally with the rotor. The inclination angle of the swash plate changes when the tip of the protrusion slides on the flat cam surface of the cam member. That is, the joining position of the tip of the projection with respect to the planar cam surface defines the inclination angle of the swash plate.

The maximum tilt angle of the swash plate with the maximum discharge capacity is regulated by the contact between the abutting surface formed on the opposite surface side of the swash plate with respect to the rotor and the rear end surface formed on the opposite surface side of the rotor with respect to the swash plate. Is done. The maximum inclination angle of the swash plate is set so that the top dead center position of the piston does not collide with the valve forming plate forming the suction valve. If the maximum tilt angle of the swash plate is larger than a predetermined angle and the piston collides with the valve forming plate, this shock causes excessive vibration in the valve forming plate and the valve plate. There may be a problem that the torque limiter on the driving force transmission system from the driving source to the rotating shaft is damaged.
JP 2001-304102 A

  If the abutting surface on the swash plate side and the rear end surface on the rotor side come into contact, it seems that the maximum inclination angle of the swash plate is regulated to a predetermined angle, but the refrigerant is insufficient and the compression reaction force becomes small. In such a case, when the compressor rotates at a high speed, a large inertial force acts on the piston, and the swash plate may be further tilted from the original maximum tilt angle.

  That is, the arm on the swash plate side is not restricted from moving in the tilting direction of the swash plate except for engaging with the cam surface, and the contact between the abutting surface and the rear end surface is relative to the axial direction of the rotating shaft. This is a contact on a vertical virtual plane. Therefore, if a large inertial force acts on the piston when there is a shortage of refrigerant, the swash plate-side abutting surface does not slide in contact with the rotor-side rear end surface. There is a risk of further tilting from the maximum tilt angle.

  An object of the present invention is to increase the certainty of regulating the maximum tilt angle of a swash plate supported by a pinless tilt angle varying mechanism to a predetermined angle.

  The present invention includes a swash plate that obtains a driving force from a rotating shaft and rotates integrally with the rotating shaft, and a pinless tilt variable mechanism that supports the swash plate in a variable tilt angle, and the swash plate includes the rotating shaft. The pinless tilt angle varying mechanism includes: an outer peripheral surface of the rotating shaft; a first sliding portion provided on the swash plate so as to be in sliding contact with the outer peripheral surface; and the rotating shaft. A cam surface provided on the rotating member to which the cam member belongs, and a second sliding portion provided on the swash plate so as to be in sliding contact with the cam surface, wherein the second sliding portion includes the cam surface and the inclined surface. The cam surface is intended for a variable displacement compressor facing the swash plate side. In the invention of claim 1, there is provided a maximum inclination restriction mechanism for restricting the maximum inclination of the swash plate. The maximum tilt angle regulating mechanism is attached to the receiving portion belonging to the rotating member and the swash plate. A regulation position for regulating movement of the movable part in a direction from the bottom dead center corresponding part to the top dead center corresponding part on the rotating member by contacting the movable part. The maximum inclination angle of the swash plate is regulated by the contact between the receiving portion and the movable portion.

Such a maximum inclination restriction mechanism increases the certainty of restricting the maximum inclination of the swash plate to a predetermined inclination by the contact between the contact surface and the contact portion.
In a preferred example, one of the movable part and the receiving part has a contact surface that is parallel or inclined with respect to the axis of the rotation shaft, and the other of the movable part and the receiving part is A contact portion that contacts the contact surface, and the contact surface and the contact portion approach each other as the tilt angle of the swash plate increases, and the contact surface receives the receiving portion. The contact surface is a descending gradient surface that descends from the swash plate side toward the cam surface side in the axial direction of the rotating shaft, and the contact surface is In the state where the movable portion is inclined and the contact surface is in contact with the contact portion, the contact surface is moved from the swash plate side in the axial direction of the rotation shaft. It is an ascending slope that rises toward the cam surface.

  In a preferred example, the rotating member is a rotating support fixed to the rotating shaft, and a cam surface forming body projects from the rotating support toward the swash plate. The body is provided with the cam surface, and the receiving portion is formed on the cam surface forming body.

The cam surface forming body is suitable as a place for forming the receiving portion.
In a preferred example, the contact surface is provided in the receiving portion formed on the cam surface forming body.

In a preferred example, a balance weight is provided on the swash plate so as to project toward the rotary support, and the movable portion is provided on the balance weight.
Since the cam surface forming body and the balance weight are opposed to each other in the radial direction, the balance weight is suitable as a place for forming the movable portion.

In a preferred example, the contact portion is provided on the movable portion.
In a preferred example, the receiving portion is the rotating shaft.
The maximum inclination angle of the swash plate is regulated by the movable part coming into contact with the rotating shaft.

  The present invention has an excellent effect that the certainty of regulating the maximum inclination angle of the swash plate to a predetermined angle can be enhanced.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1A, a front housing 12 is connected to the front end of the cylinder block 11. A rear housing 13 is connected to the rear end of the cylinder block 11. The cylinder block 11, the front housing 12, and the rear housing 13 constitute an entire housing of the variable displacement compressor 10. A rotary shaft 14 is rotatably supported by the front housing 12 and the cylinder block 11 that form the control pressure chamber 121. The rotating shaft 14 projecting outside from the control pressure chamber 121 obtains a rotational driving force from an external driving source (for example, a vehicle engine) not shown.

  A rotary support 15 is fixed to the rotary shaft 14. The rotating support 15 is a rotating member belonging to the rotating shaft 14. The rotary shaft 14 is passed through a cylindrical base 151 of the rotary support 15. Further, a disc-shaped swash plate 17 is supported on the rotary shaft 14 so as to face the rotary support 15. A shaft through hole 173 is provided in the center of the swash plate 17, and the swash plate 17 is supported by the shaft through hole 173 so as to be slidable and tiltable in the direction of the rotation axis 141 of the rotary shaft 14. ing. That is, the peripheral surface 174 of the shaft through hole 173 is a first sliding portion that is in sliding contact with the outer peripheral surface 142 of the rotating shaft 14.

  Fig.2 (a) is the BB sectional drawing of Fig.1 (a). FIG.2 (b) is CC sectional view taken on the line of Fig.2 (a). As shown in FIG. 2B, the cam surface forming body 16 is integrally formed on the facing surface 152 of the rotary support 15 with respect to the swash plate 17. The cam surface forming body 16 has a pair of arms 161 and 162 projecting toward the swash plate 17, and a pair of protrusions 171 and 172 are formed on the opposing surface 170 of the swash plate 17 with respect to the rotation support 15. Projecting toward the rotary support 15. As shown in FIG. 2B, the protrusions 171 and 172 are inserted into a recess 163 formed between the pair of arms 161 and 162. The protrusions 171 and 172 can move in the recess 163 while being sandwiched between the pair of arms 161 and 162. The bottom part of the recessed part 163 is formed in the cam surface 160, and the cam surface 160 faces the swash plate 17 side from the cam surface 160 side. The cam surface 160 is a slope with an upward gradient that rises from the swash plate 17 side toward the rotation support 15 side in the direction of the rotation axis 141 of the rotation shaft 14, and the tip portions of the protrusions 171 and 172 slide on the cam surface 160. It is possible to contact.

  The swash plate 17 can be tilted in the axial direction of the rotary shaft 14 and can rotate integrally with the rotary shaft 14 by the linkage between the projections 171 and 172 sandwiched between the pair of arms 161 and 162 and the cam surface 160. The inclination of the swash plate 17 is guided by the sliding guide relationship between the cam surface 160 and the protrusions 171 and 172, and the sliding between the outer peripheral surface 142 of the rotating shaft 14 and the peripheral surface 174 of the shaft through hole 173. The rotating shaft 14, the peripheral surface (first sliding portion) of the shaft through hole 173, the cam surface forming body 16 and the protrusions 171 and 172 (second sliding portion) tilt the swash plate 17 with respect to the rotating support 15. A pinless tilt variable mechanism that supports the swash plate 17 so that the torque can be transmitted from the rotary shaft 14 to the swash plate 17 is configured. When the diameter center portion of the swash plate 17 moves toward the rotary support 15, the inclination angle of the swash plate 17 increases.

  As shown in FIG. 2A, the balance weight 18 is integrally formed on the facing surface 152 of the rotation support 15. The balance weight 18 is provided on the opposite side of the arms 161 and 162 with respect to the rotation axis 141 in order to increase the rotation balance of the rotation support 15.

  FIG.1 (b) is the sectional view on the AA line of Fig.1 (a). As shown in FIG. 1B, a balance weight 19 is integrally formed on the facing surface 170 of the swash plate 17. The balance weight 19 is provided on the opposite side of the projections 171 and 172 with respect to the radial center of the swash plate 17 in order to increase the rotational balance of the swash plate 17, and the cam surface that engages with the projections 171 and 172. The formed body 16 and the balance weight 19 are opposed to each other with the rotating shaft 14 interposed therebetween.

  As shown in FIG. 1A, pistons 20 are accommodated in a plurality of cylinder bores 111 penetrating the cylinder block 11. The rotational movement of the swash plate 17 is converted into the back-and-forth reciprocating movement of the piston 20 via the shoe 21, and the piston 20 reciprocates in the cylinder bore 111.

  A suction chamber 131 and a discharge chamber 132 are defined in the rear housing 13. The refrigerant in the suction chamber 131 which is the suction pressure region flows into the cylinder bore 111 by pushing the suction valve 221 away from the suction port 22 by the backward movement of the piston 20 (movement from the right side to the left side in FIG. 1A). . The gaseous refrigerant that has flowed into the cylinder bore 111 is discharged into the discharge chamber 132 by pushing the discharge valve 231 away from the discharge port 23 by the forward movement of the piston 20 (movement from the left side to the right side in FIG. 1A). .

The refrigerant discharged into the discharge chamber 132, which is the discharge pressure region, flows out to an external refrigerant circuit (not shown) outside the compressor. The refrigerant that has flowed into the external refrigerant circuit returns to the suction chamber 131.
The discharge chamber 132 and the control pressure chamber 121 are connected by a supply passage 24. The control pressure chamber 121 and the suction chamber 131 are connected by a discharge passage 25. The refrigerant in the control pressure chamber 121 flows out to the suction chamber 131 through the discharge passage 25. An electromagnetic capacity control valve 26 is assembled in the rear housing 13. The electromagnetic capacity control valve 26 controls the passage sectional area in the supply passage 24. When the passage sectional area in the supply passage 24 is increased by increasing the valve opening degree of the electromagnetic capacity control valve 26, the amount of refrigerant supplied from the discharge chamber 132 to the suction chamber 131 is increased, and the pressure in the control pressure chamber 121 is increased. Thereby, the inclination angle of the swash plate 17 decreases. When the passage sectional area in the supply passage 24 is reduced by reducing the valve opening degree of the electromagnetic capacity control valve 26, the refrigerant supply amount from the discharge chamber 132 to the suction chamber 131 is reduced, and the pressure in the control pressure chamber 121 is reduced. Thereby, the inclination angle of the swash plate 17 increases.

  As shown in FIG. 1B, the rotating shaft 14 rotates in the direction of the arrow R, and is one side of the swash plate 17 divided by virtual planes Hd and Ht on the same plane including the rotating axis 141 of the rotating shaft 14. The half is the suction stroke corresponding area S, and the other half is the discharge stroke corresponding area D. The piston 20 corresponding to the suction stroke corresponding area S is in the suction stroke, and the piston 20 corresponding to the discharge stroke corresponding area D is in the discharge stroke when viewed in the direction of the rotation axis 141 of the rotation shaft 14. The part on the swash plate 17 that intersects the virtual plane Hd is a part that arranges the piston 20 at the bottom dead center, and the part on the swash plate 17 that intersects the virtual plane Ht arranges the piston 20 at the top dead center. It is a part. Hereinafter, the virtual plane Hd on the rotation support 15 may be referred to as a bottom dead center corresponding part Hd, and the virtual plane Ht on the rotation support 15 may be referred to as a top dead center corresponding part Ht. The top dead center corresponding part Ht exists on the second sliding part side from the rotation axis 141, and the bottom dead center corresponding part Hd exists on the opposite side.

  The swash plate 17 changes its inclination by moving in a direction parallel to the virtual planes Hd and Ht and in the direction of the rotation axis 141 of the rotation shaft 14. In other words, the positional relationship between the swash plate 17 and the virtual planes Hd and Ht is such that the center line L of the disc-shaped swash plate 17 (shown in FIGS. 1A and 2B) is on the virtual planes Hd and Ht. Therefore, the swash plate 17 is in a positional relationship of moving on the virtual planes Hd and Ht as the swash plate 17 tilts.

The balance weight 19 is formed in an arc shape. The balance weight 19 is formed symmetrically with respect to the virtual planes Hd and Ht.
As shown in FIG. 2A, a movable protrusion 27 is fixed to the arc end of the balance weight 19. The protruding direction of the movable protrusion 27 is parallel to the virtual planes Hd and Ht and is perpendicular to the rotation axis 141, and the tip 271 of the movable protrusion 27 is in contact with the inner surface 28 of the cam surface forming body 16. Is possible. The inner side surface 28 is a plane, and the inner side surface 28 of the plane is parallel to the rotation axis 141 of the rotation shaft 14. The maximum inclination angle of the swash plate 17 is regulated by the contact between the tip 271 of the movable protrusion 27 and the inner surface 28 of the cam surface forming body 16. The swash plate 17 shown by the solid line in FIGS. 1A and 3 is in the maximum tilt state, and the swash plate 17 shown by the chain line is in the minimum tilt state.

  As shown in FIG. 3, the movable protrusion 27 is prevented from moving in the direction of the arrow Q in a state where the tip 271 of the movable protrusion 27 and the inner surface 28 of the cam surface forming body 16 are in contact with each other. The direction of the arrow Q is a direction parallel to the virtual planes Hd and Ht (see FIG. 1B), a direction perpendicular to the rotation axis 141, and a direction away from the rotation axis 14. That is, the swash plate 17 is prevented from moving in the direction of the arrow Q.

  The inner side surface 28 provided on the cam surface forming body 16 (receiving portion) is a direction from the bottom dead center corresponding portion Hd to the top dead center corresponding portion Ht on the rotation support 15 [the direction indicated by the arrow Q in FIG. ] Is arranged at a restricting position for restricting the movement of the movable protrusion 27 to the top. The inner side surface 28 is a contact surface provided in the receiving portion, and the tip 271 is a contact portion provided in the movable portion. The movable protrusion 27 as the movable portion and the cam surface forming body 16 as the receiving portion constitute a maximum inclination restriction mechanism that restricts the maximum inclination angle of the swash plate 17.

In the first embodiment, the following effects can be obtained.
(1) The piston 20 in the discharge stroke (moves from the left side to the right side as indicated by the arrow P in FIG. 3) moves the portions on the projections 171, 172 side of the swash plate 17 away from the rotary support 15 by the inertial force. pull. Therefore, the swash plate 17 tends to rotate in the direction of the arrow Y about the contact portion K between the shaft hole 173 and the peripheral surface of the rotary shaft 14. When the swash plate 17 is at the maximum tilt position, the tip 271 of the movable protrusion 27 and the inner surface 28 of the cam surface forming body 16 are in contact with each other, so that the swash plate 17 at the maximum tilt position is in the direction of arrow Y. It does not rotate. That is, the maximum inclination restriction mechanism in which the tip 271 of the movable protrusion 27 and the inner surface 28 of the cam surface forming body 16 abut on increases the certainty of restricting the maximum inclination of the swash plate 17 to a predetermined inclination.

  (2) The balance weight 19 and the cam surface forming body 16 are opposed to each other with the rotating shaft 14 interposed therebetween, and a movable protrusion is provided between the balance weight 19 and the cam surface forming body 16 so as to avoid the rotating shaft 14. If 27 is interposed, the cam surface forming body 16 and the movable protrusion 27 can be brought into contact with each other. The cam surface forming body 16 is suitable as a place for forming an inner surface 28 as a receiving portion with which the movable projection 27 is brought into contact. The balance weight 19 provided on the swash plate 17 is formed on the movable projection 27. It is suitable as a place.

Next, a second embodiment of FIG. 4 will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
A corner portion 272 of the tip 271A (contact portion) of the movable protrusion 27A contacts the inner side surface 28 (contact surface). In a state where the inner side surface 28 and the tip 271A are in contact with each other, the tip 271A is an ascending gradient surface that rises from the swash plate 17 side toward the cam surface 160 side in the direction of the rotation axis 141 of the rotary shaft 14. When the swash plate 17 is at the maximum tilt position, the corner portion 272 of the movable protrusion 27A and the inner surface 28 are in contact with each other, so that the swash plate 17 at the maximum tilt position is not rotated in the direction of arrow Y. In addition, the certainty of regulating the maximum inclination angle of the swash plate 17 to a predetermined inclination angle is increased.

Next, a third embodiment of FIG. 5 will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
The inner side surface 28 </ b> A (contact surface) formed on the cam surface forming body 16 is a descending gradient surface that descends from the swash plate 17 side toward the cam surface 160 side in the direction of the rotation axis 141 of the rotation shaft 14. A corner portion 273 (contact portion) of the movable protrusion 27 is in contact with the inner side surface 28A. In a state in which the corner portion 273 is in contact with the inner side surface 28A, a component force is generated to urge the movable protrusion 27 from the swash plate 17 side to the rotary support 15 side, and the portion of the swash plate 17 on the protrusions 171 and 172 side The component force urges the swash plate 17 to the rotary support 15. This restricts displacement of the maximum tilt angle position of the swash plate 17 due to the inertial force of the piston 20 when the swash plate tilt angle is maximum. The descending slope shape of the inner side surface 28A contributes to an improvement in certainty that the maximum inclination angle (maximum discharge position) of the swash plate 17 is regulated to a predetermined angle (position).

Next, a fourth embodiment of FIG. 6 will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
A receiving protrusion 30 as a receiving portion is provided on the facing surface 152 of the rotary support 15 so as to protrude toward the swash plate 17. The inner side surface 301 (contact surface) of the receiving projection 30 extends from the bottom dead center corresponding part Hd (see FIG. 2A) to the top dead center corresponding part Ht [see FIG. 2A]. The balance weight 19 (movable part) is disposed at a restriction position that restricts movement of the balance weight 19 (movable part). When the inclination angle of the swash plate is maximum, the peripheral edge 191 (contact portion) of the balance weight 19 is in contact with the inner surface 301 of the receiving projection 30, and the balance weight 19 is prevented from moving toward the cam surface forming body 16 side. The The receiving protrusion 30 and the balance weight 19 constitute a maximum inclination restriction mechanism that restricts the maximum inclination of the swash plate 17.

In the fourth embodiment, the same effect as the item (1) in the first embodiment can be obtained.
Next, a fifth embodiment of FIG. 7 will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  A movable protrusion 27 </ b> B as a movable portion protrudes from the balance weight 19 on the side of the bottom dead center corresponding portion Hd [see FIG. A corner portion 153 (contact portion) of the cylindrical base portion 151 (receiving portion) is on the bottom dead center corresponding portion Hd side with respect to the rotation axis 141, and the bottom dead center corresponding portion Hd (see FIG. 2A). Is disposed at a restricting position for restricting the movement of the movable protrusion 27B in the direction toward the top dead center corresponding part Ht (see FIG. 2A). When the swash plate inclination angle is maximum, the inner side surface 274 (contact surface) of the movable protrusion 27B contacts the corner portion 153 of the cylindrical base 151, and the balance weight 19 is prevented from moving toward the cam surface forming body 16 side. Is done. In a state where the inner side surface 274 and the corner portion 153 are in contact with each other, the inner side surface 274 is a descending gradient surface that descends from the swash plate 17 side toward the cam surface 160 side in the direction of the rotation axis 141 of the rotary shaft 14. The base 151 and the movable protrusion 27 </ b> B constitute a maximum inclination restriction mechanism that restricts the maximum inclination of the swash plate 17.

In the fifth embodiment, the same effect as in the fourth embodiment can be obtained.
Next, a sixth embodiment of FIG. 8 will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  Movable hooks 31 and 32 as movable parts are formed on the protrusions 171 and 172. The inner side surfaces 33 and 34 of the arms 161 and 162 are arranged at restriction positions that restrict the movement of the movable hooks 31 and 32 in the direction from the bottom dead center corresponding part Hd to the top dead center corresponding part Ht. When the inclination angle of the swash plate is maximum, the engaging surfaces 311 and 321 (contacting portions) of the movable hooks 31 and 32 are in contact with the inner side surfaces 33 and 34 (contacting surfaces) of the arms 161 and 162 as receiving portions. 171 and 172 are prevented from moving away from the rotation shaft 14. The movable hooks 31 and 32 and the arms 161 and 162 constitute a maximum inclination restriction mechanism that restricts the maximum inclination of the swash plate 17.

In the fifth embodiment, the same effect as the item (1) in the first embodiment can be obtained.
In the present invention, the following embodiments are also possible.
In the first embodiment, a protrusion that can come into contact with the tip 271 of the movable protrusion 27 may be provided on the inner surface 28 of the cam surface forming body 16.

The balance weight 19 may be in contact with the peripheral surface of the rotary shaft 14 so that the maximum inclination angle of the swash plate 17 is restricted.
The technical idea that can be grasped from the embodiment described above will be described below.

  [1] The movable portion has a contact surface inclined with respect to the axis of the rotation shaft, and the receiving portion has a contact portion that contacts the contact surface, The contact portions approach each other as the inclination angle of the swash plate increases, and the contact surface descends as it goes from the swash plate side to the cam surface side in the axial direction of the rotating shaft. The variable capacity compressor according to claim 1, wherein the compressor is a surface.

The 1st Embodiment is shown and (a) is the whole sectional side view of a compressor. (B) is the sectional view on the AA line of Fig.1 (a). (A) is the BB sectional drawing of Fig.1 (a). (B) is CC sectional view taken on the line of Fig.2 (a). FIG. The partial expanded side sectional view which shows 2nd Embodiment. The partial expanded side sectional view which shows 3rd Embodiment. The partial expanded side sectional view which shows 4th Embodiment. The partial expanded side sectional view which shows 5th Embodiment. Sectional drawing which shows 6th Embodiment.

Explanation of symbols

  14: Rotating shaft. 141: A rotational axis. 142 ... outer peripheral surface. 15: A rotating support as a rotating member. 16: A cam surface forming body as a receiving portion. 160: Cam surface. 17 ... Swash plate. 173: Shaft through hole. 171, 172... Projections as second sliding parts. 174: A peripheral surface as the first sliding portion. 19 ... Balance weight. 27. Movable protrusion as a movable part. 271: A tip as a contact portion. 28: An inner surface as a contact surface. Hd: Bottom dead center corresponding part. Ht: Top dead center corresponding part.

Claims (7)

A swash plate that obtains a driving force from a rotary shaft and rotates integrally with the rotary shaft; and a pinless tilt angle variable mechanism that supports the swash plate in a variable tilt angle. The pinless tilt angle varying mechanism has a hole, an outer peripheral surface of the rotating shaft, a first sliding portion provided on the swash plate so as to be in sliding contact with the outer peripheral surface, and a rotating member belonging to the rotating shaft And a second sliding portion provided on the swash plate so as to be in sliding contact with the cam surface, and the second sliding portion is provided between the cam surface and the swash plate. In the variable capacity compressor in which the cam surface faces the swash plate side,
A maximum inclination restriction mechanism for restricting the maximum inclination angle of the swash plate is provided, and the maximum inclination restriction mechanism includes a receiving portion belonging to the rotating member, and a movable portion attached to the swash plate, The receiving part is disposed at a restricting position that abuts the movable part and regulates the movement of the movable part in a direction from the bottom dead center corresponding part to the top dead center corresponding part on the rotating member, The maximum displacement angle of the swash plate is a variable capacity compressor that is regulated by contact between the receiving portion and the movable portion. One of the movable part and the receiving part has a contact surface that is parallel or inclined with respect to the axis of the rotating shaft, and the other of the movable part and the receiving part is the contact surface. A contact portion that contacts the
The contact surface and the contact portion approach each other as the tilt angle of the swash plate increases,
When the contact surface is in the receiving portion and is inclined, the contact surface is a descending slope surface that descends from the swash plate side toward the cam surface side in the axial direction of the rotating shaft. And
When the contact surface is in the movable portion and is inclined, the contact surface is in the axial direction of the rotating shaft when the contact surface is in contact with the contact portion. The variable capacity compressor according to claim 1, wherein the variable capacity compressor is a rising slope surface that rises from the swash plate side toward the cam surface side.   The rotating member is a rotating support fixed to the rotating shaft, and a cam surface forming body projects from the rotating support toward the swash plate, and the cam surface forming body includes the cam. The variable capacity compressor according to claim 1, wherein a surface is provided, and the receiving portion is formed on the cam surface forming body.   The variable capacity compressor according to claim 3, wherein the contact surface is provided in the receiving portion.   The variable weight according to any one of claims 1 to 4, wherein a balance weight is provided on the swash plate so as to project toward the rotary support, and the movable portion is provided on the balance weight. Capacity type compressor.   The variable capacity compressor according to claim 5, wherein the contact portion is provided in the movable portion.   The variable capacity compressor according to claim 1, wherein the receiving portion is the rotating shaft.

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