JP2015052286A - Vane pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain sealing performance, to improve assembly work efficiency, and to reduce the manufacturing cost.SOLUTION: In a vane pump having a guide groove 26 formed in a radial direction in a center of a rotor 25 eccentrically and rotatably supported in a pump chamber 16 and a vane 31 supported so as to be capable of going in and out of the guide groove 26 in the radial direction and having both ends sliding with a cam surface 17, the vane 31 is constituted by a first plate 32 and a second plate 33, a slide contact surface 35 sliding with a first side surface 18 of the pump chamber 16 is formed on one end surface of the first plate 32, a thickness thinning part 36 and a rib 37 are formed and a protrusion 38 and a recession 39 engaged with each other are provided on an opposite side end surface of the first plate 32, the slide contact surface 35 sliding with a second side surface 19 of the pump chamber 16 is formed on one end surface of the second plate 33, the thickness thinning part 36 and the rib 37 are formed and the protrusion 38 and the recession 39 engaged with each other are provided on an opposite side end surface of the second plate 33, and the first plate 32 and the second plate 33 are abutted with each other by engagement of the protrusion 38 and the recession 39.

Description

  The present invention relates to a vane pump, and more particularly to a vane structure.

  As a conventional vane pump of this type, a rotor is eccentrically supported in a pump chamber of a housing so as to be rotatable, and a pair of vanes overlapping with slits (guide grooves) formed in the diametrical direction on the rotor can be slidable in the diametrical direction. There is one that supports the tip of each vane slidably in contact with the cam surface of the pump chamber (see, for example, Patent Document 1 and Patent Document 2).

Japanese Utility Model Publication No. 52-36304 JP 2004-285978 A

A vane pump that supports a pair of overlapping vanes in a guide groove has the following problems.
(1) If a pair of vanes are incorporated in the guide groove in the opposite direction, the pair of vanes may be damaged due to the force acting in the direction in which the pair of vanes separate due to the sliding resistance of the vane tip. It is necessary to incorporate the vane in the guide groove so as to be adapted to one direction of rotation of the rotor.
(2) Countermeasures such as attaching an identification mark on the side of the vane do not provide complete countermeasures because the possibility of human error remains.
(3) Since it is necessary to accurately superimpose a pair of vanes, in the case of a vane structure in which a spring is sandwiched between a pair of vanes, an assembling operation that resists the spring force of the spring becomes difficult.

  An object of the present invention is to provide a vane pump that can solve such problems, can maintain the sealing performance of the vanes, and can prevent reverse vane assembly.

Typical means for solving the above-described problems are as follows.
(1) a pump chamber having a cam surface and first and second side surfaces on both sides of the cam surface;
A circular rotor that is eccentrically supported so that a part of the outer peripheral surface is in sliding contact with a part of the cam surface and is rotatably supported by the pump chamber;
A guide groove formed to extend in the radial direction at the center of the rotor;
A vane that is supported so as to be able to enter and exit in the radial direction in the guide groove, and whose both ends are in sliding contact with the cam surface;
In a vane pump comprising:
The vane has a first plate having a convex portion and a concave portion;
It is composed of a second plate with a convex part and a concave part,
The first plate and the second plate are in contact with each other in a state in which the convex portions and the concave portions are engaged with each other,
Vane pump characterized by that.
(2) a pump chamber having a cam surface and first and second side surfaces on both sides of the cam surface;
A circular rotor that is eccentrically supported so that a part of the outer peripheral surface is in sliding contact with a part of the cam surface and is rotatably supported by the pump chamber;
A guide groove formed to extend in the radial direction at the center of the rotor;
A vane that is supported so as to be able to enter and exit in the radial direction in the guide groove, and whose both ends are in sliding contact with the cam surface;
In a vane pump comprising:
The vane includes a first plate and a second plate;
A sliding contact surface slidably contacting the first side surface is formed on one end surface of the first plate, and a meat stealer and a rib are formed on an end surface opposite to the sliding contact surface of the first plate. , A convex portion and a concave portion that are engaged with each other are provided,
A sliding contact surface that is in sliding contact with the second side surface is formed on one end surface of the second plate, and a stealer and a rib are formed on an end surface opposite to the sliding contact surface of the second plate. , A convex portion and a concave portion that are engaged with each other are provided,
The first plate and the second plate are in contact with each other in a state in which the convex portions and the concave portions are engaged with each other,
Vane pump characterized by that.
(3) a pump chamber having a cam surface and first and second side surfaces on both sides of the cam surface;
A circular rotor that is eccentrically supported so that a part of the outer peripheral surface is in sliding contact with a part of the cam surface and is rotatably supported by the pump chamber;
A guide groove formed to extend in the radial direction at the center of the rotor;
A vane that is supported so as to be able to enter and exit in the radial direction in the guide groove, and whose both ends are in sliding contact with the cam surface;
In a vane pump comprising:
The vane includes a first plate and a second plate;
A chamfer is formed at one end of the first plate so as to be in sliding contact with the cam surface, and a stealer and a rib are formed on the end surface opposite to the chamfer of the first plate, and they engage with each other. Protrusions and recesses are provided,
A chamfer is formed at one end of the second plate so as to be in sliding contact with the cam surface, and a meat stealer and a rib are formed on an end surface opposite to the chamfer of the second plate and engage with each other. Protrusions and recesses are provided,
The first plate and the second plate are in contact with each other in a state in which the convex portions and the concave portions are engaged with each other,
Vane pump characterized by that.

  According to the above-described means, the sealing performance of the vanes can be maintained, the reverse assembly of the vanes can be prevented, and the material of the vanes can be reduced.

The vane pump which is 1st embodiment of this invention is shown, (a) is the partially cut front view which removed the cover body, (b) is side sectional drawing which passes along a vane. It is sectional drawing which follows the II-II line | wire of Fig.1 (a). It is a disassembled perspective view which shows a vane. It is a disassembled perspective view which shows the 1st modification of a vane. It is a disassembled perspective view which shows the 2nd modification of a vane. The vane pump which is 2nd embodiment of this invention is shown, (a) is the partially cut front view which removed the cover body, (b) is side sectional drawing which passes along a vane. It is a disassembled perspective view which shows a vane.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 to 5 show a first embodiment of the present invention.
In this embodiment, the vane pump according to the present invention is configured to be applied to a vacuum pump used as a vacuum source for a booster brake of an automobile.

  As shown in FIGS. 1 to 2, the vane pump according to the present embodiment includes a bottomed cylindrical housing 10 having a pump chamber therein. The opening of the housing 10 is closed by a lid 11, and the lid 11 is screwed to the opening-side end surface of the housing 10. A boss 13 is eccentrically protruded from the outer surface of the bottom wall of the housing 10, and a circular support hole 14 is coaxially formed in the boss 13. An oil supply passage 15 is formed in the boss 13 of the housing 10. One end of the oil supply passage 15 is connected to an oil supply port 15 </ b> A provided on the outer surface of the boss 13, and the other end is connected to the inner peripheral surface of the support hole 14. Has been.

  A circumferential cam surface 17 is formed on the inner periphery of the housing 10, and the cam surface 17 is formed eccentric to the center line of the support hole 14. An arc-shaped contact portion 17 a centering on the center line of the support hole 14 is formed on a part of the circumferential surface of the cam surface 17. A first side surface 18 and a second side surface 19 which are parallel to each other are formed on both sides of the cam surface 17 by the inner surface of the lid 11 and the inner surface of the housing 10. The cam surface 17, the first side surface 18, and the second side surface 19 form a cylindrical space-shaped pump chamber 16 closed at both ends inside the housing 10.

A suction port 20 is formed on the cam surface 17 at a position closer to the contact portion 17a on the front side in the rotor rotation direction than the contact portion 17a. The suction port 20 is opened in the housing 10 in the radial direction. A suction passage 21 is communicated. A suction valve 22 is installed in the suction passage 21.
On the second side surface 19 of the housing 10, the discharge port 23 has an arc shape along the cam surface 17 at a position closer to the contact portion 17 a on the rear side in the rotor rotation direction than the contact portion 17 a of the cam surface 17. The discharge port 23 is connected to a discharge path 24 formed in the bottom wall of the housing 10.

A rotor 25 formed in a cylindrical shape is accommodated in the pump chamber 16 of the housing 10 so as to rotate eccentrically. The outer surface of the rotor 25 is in contact with the contact portion 17a of the cam surface 17 so as to be slidable in the circumferential direction, and both end surfaces of the rotor 25 are slidably contacted with the first side surface 18 and the second side surface 19 of the pump chamber 16. It touches. A guide groove 26 is formed in the central portion of the rotor 25 so as to extend in the radial direction over the entire thickness in the axial direction. The rotor 25 is formed with a pair of concave portions 27, 27 symmetrically on both sides of the guide groove 26.
A shaft portion 28 is formed coaxially with the rotor 25, and the shaft portion 28 is fitted into the support hole 14 of the housing 10 and is rotatably supported. An oil supply passage 29 is formed in the shaft portion 28, one end of the oil supply passage 29 is opened at a position facing the oil supply passage 15 of the support hole 14 on the outer peripheral surface of the shaft portion 28, and the other end is the bottom surface of the guide groove 26. It is opened at.
A coupling 30 connected to an engine camshaft or the like (not shown) is screwed to the outer end surface of the shaft portion 28 of the rotor 25, and the rotor 25 is rotated by the engine via the coupling 30. It has become.

A vane 31 is fitted into the guide groove 26 of the rotor 25 so as to be slidable in the radial direction. The vane 31 reciprocates in the radial direction along the guide groove 26 as the rotor 25 rotates, and the cam surface of the pump chamber 16. 17, the first side surface 18, and the second side surface 19 are slidable.
A suction-side pump working chamber R1 is formed between the cam surface 17 of the housing 10 on the front side of the contact portion 17a in the rotation direction of the rotor 25, the outer peripheral surface of the rotor 25, and the vane 31, and the rotation of the rotor 25 is performed. A discharge side pump working chamber R2 is formed between the cam surface 17 on the rear side of the contact portion 17a in the direction, the outer peripheral surface of the rotor 25, and the vane 31, and the cam on the opposite side of the contact portion 17a. A third pump working chamber R3 is formed between the surface 17, the outer peripheral surface of the rotor 25, and the vane 31. Except for the case where the distance between each tip edge of the vane 31 abutted against the cam surface 17 and the abutting portion 17a is smaller than a predetermined value, the suction port 20 is communicated with the suction side pump working chamber R1, and the discharge side pump A discharge port 23 communicates with the working chamber R2.

As shown in FIGS. 1 to 3, the vane 31 is composed of a first plate 32 and a second plate 33 having the same shape, and the first plate 32 and the second plate 33 are wear resistant and heat resistant. Are formed into substantially the same rectangular (quadrangle) flat plate shape.
The first plate 32 and the second plate 33 have a thickness T slightly smaller than the groove width W of the guide groove 26, a short side A slightly smaller than ½ of the depth D of the guide groove 26, and a long side B is formed in a substantially flat rectangular shape having a diameter equal to or larger than the diameter of the rotor 25 and equal to or smaller than the diameter of the cam surface 17. Chamfers 34 and 34 are formed in an R chamfer shape at both ends of the first plate 32 and the second plate 33 on the long side B side.

  A sliding contact surface 35 is formed in a smooth surface on the end surface on the first side surface 18 side of the first plate 32, and a plurality of meat steals 36 and ribs 37 are provided on the end surface opposite to the first side surface 18 of the first plate 32. They are addressed individually, alternately and symmetrically. A protruding portion 38 protrudes from the end surface of the rib 37 at a position away from the center of the first plate 32, and a recessed portion 39 is embedded in the rib 37 at a position symmetrical to the protruding portion 38. ing. The convex portion 38 is set so as to be inserted into the concave portion 39, and the depth of the concave portion 39 is set slightly deeper than the height of the convex portion 38.

  A sliding contact surface 35 is formed in a smooth surface on the end surface on the second side surface 19 side of the second plate 33, and a plurality of meat steals 36 and ribs 37 are provided on the end surface opposite to the second side surface 19 of the second plate 33. They are addressed individually, alternately and symmetrically. A protruding portion 38 protrudes from the end surface of the rib 37 at a position away from the center of the second plate 33, and a recessed portion 39 is embedded in the rib 37 at a position symmetrical to the protruding portion 38. ing. The convex portion 38 is set so as to be inserted into the concave portion 39, and the depth of the concave portion 39 is formed slightly deeper than the height of the convex portion 38.

When assembling the vane 31 into the guide groove 26, the first plate 32 and the second plate 33 are combined and inserted into the guide groove 26 with the respective convex portions 38 inserted into the concave portions 39. The At this time, since the first plate 32 and the second plate 33 are formed in the same shape, the two plates having the same shape can be combined in a state where the convex portions 38 are respectively inserted into the concave portions 39. become.
In a normal state in which the convex portions 38 are inserted into the concave portions 39 and aligned, the first plate 32 and the second plate 33 are in close contact with the end surfaces on the convex portion 38 and concave portion 39 sides, and both sliding contact surfaces. 35 and 35 constitute a pair of side surfaces parallel to each other. Therefore, the vane 31 constituted by the first plate 32 and the second plate 33 can be properly fitted into the guide groove 26.

When the lid 11 is put on the rotor 25 in a state where the vane 31 is properly fitted in the guide groove 26 and is screwed to the housing 10, the vane 31 reduces the diameter of the guide groove 26 as the rotor 25 rotates. The cam surface 17, the first side surface 18, and the second side surface 19 of the pump chamber 16 are assembled in a self-controlling manner while reciprocating in the direction.
However, when the lid 11 is put on the rotor 25 in a state where the vane 31 is improperly inserted in the guide groove 26 and screwed to the housing 10, the convex portions 38 and the first plate 32 of the first plate 32 are arranged. Since the vane 31 protrudes from the guide groove 26 by the amount of the convex portion 38 of the two plates 33, the lid 11 is prevented from being screwed properly to the housing 10 in a self-controlling manner. It is possible to prevent the shipment of defective products due to the occurrence of human error such as an illegal assembly operation to the guide groove 26.

The operation of the vane pump according to the above configuration will be described.
When the rotor 25 is driven via the coupling 30 and rotated counterclockwise in FIG. 1A, the air in the suction passage 21 is sucked into the suction side pump working chamber R1 from the suction port 20, Air in the discharge side pump working chamber R <b> 2 is discharged from the discharge port 23 to the outside through the discharge path 24.
During this suction and discharge operation, the lubricating oil supplied to the oil supply port 15A is supplied to the guide groove 26 via the oil supply passage 15 and the oil supply passage 29, so that the sliding contact surface between the support hole 14 and the shaft portion 28 is provided. The sliding contact surfaces of the guide groove 26, the cam surface 17, the first side surface 18, and the second side surface 19 of the vane 31 and the sliding contact surface of the rotor 25 and the contact portion 17a of the cam surface 17 are sufficiently lubricated.

  According to this embodiment, the following effects can be obtained.

(1) Since the sliding surface of the first plate is in sliding contact with the first side surface of the pump chamber, and the sliding surface of the second plate is in sliding contact with the second side surface of the pump chamber, the entire side surface becomes a sealing surface. Pump performance can be improved.

(2) By providing meat theft on the end surface opposite to the slidable contact surface of the first plate and the end surface opposite to the slidable contact surface of the second plate, while avoiding a decrease in the seal area and a deterioration in the weight balance of the vane, Vane material can be reduced.

(3) By providing a convex portion and a concave portion that engage with each other on the end surface opposite to the sliding contact surface of the first plate and the end surface opposite to the sliding contact surface of the second plate, the vane is irregularly inserted into the guide groove. When the lid is put on the rotor in a state of being fixed and screwed to the housing, the vane protrudes from the guide groove by the convex portion of the first plate and the convex portion of the second plate, and the lid body is Proper screwing to the housing is prevented in a self-controllable manner, thus preventing defective products from being shipped due to human error such as unauthorized assembly into the vane guide groove. can do.

(4) The first plate and the second plate need not be overlapped, and the vane constituted by the first plate and the second plate is incorporated in the guide groove so as to be adapted to the direction of the rotor in one direction of rotation. Therefore, assembly workability can be improved.

(5) By forming the first plate and the second plate in the same shape, the manufacturing cost of the vanes can be greatly reduced.

FIG. 4 shows a first modification of the vane according to the first embodiment.
This modification is different from the vane according to the first embodiment in the configuration of the convex portion 38A and the concave portion 39A. That is, by forming the stepped portion on the end surface opposite to the sliding contact surface 35 of the first plate 32 and the second plate 33 so as to extend in the thickness direction at the center in the length direction, the convex portion 38A is The one plate 32 and the second plate 33 are formed on one side half in the length direction on the end surface opposite to the slidable contact surface 35, the recess 39A is formed on the other half, and the projection 38A and the recess 39A mesh with each other. It is set to engage.

By providing a convex portion 38A and a concave portion 39A that mesh with each other on the end surface opposite to the sliding contact surface 35 of the first plate 32 and the end surface opposite to the sliding contact surface 35 of the second plate 33, the vane 31 is formed in the guide groove 26. When the lid 11 is put on the rotor 25 in an irregularly inserted state and screwed to the housing 10, only the convex portion 38 </ b> A of the first plate 32 and the convex portion 38 </ b> A of the second plate 33 are used. Since the vane 31 protrudes from the guide groove 26 and prevents the lid 11 from being screwed to the housing 10 in a self-controlling manner, the vane 31 is not properly assembled to the guide groove 26. Shipment of defective products due to the occurrence of such human error can be prevented without fail.
A convex portion 38A is formed on one half of the length direction of the end surface opposite to the sliding contact surface 35 of the first plate 32 (second plate 33), and a concave portion 39A engaging with the convex portion 38A is formed on the other half of the one side. Thereby, since the 1st plate and the 2nd plate can be formed in the same shape, the manufacturing cost of a vane can be reduced significantly.

FIG. 5 shows a second modification of the vane according to the first embodiment.
This modification is different from the vane according to the first embodiment in the configuration of the convex portion 38B and the concave portion 39B. That is, by forming the stepped portion on the end surface opposite to the sliding contact surface 35 of the first plate 32 and the second plate 33 so as to extend in the length direction at the center in the thickness direction, the convex portion 38B is The one plate 32 and the second plate 33 are formed on one side half in the thickness direction on the end surface opposite to the sliding contact surface 35, and the concave portion 39B is formed on the other half. The convex portion 38B and the concave portion 39B mesh with each other. It is set to engage.

By providing a convex portion 38B and a concave portion 39B that mesh with each other on the end surface opposite to the sliding contact surface 35 of the first plate 32 and the end surface opposite to the sliding contact surface 35 of the second plate 33, the vane 31 is formed in the guide groove 26. When the lid 11 is put on the rotor 25 in an irregularly inserted state and screwed to the housing 10, only the convex portion 38 </ b> B of the first plate 32 and the convex portion 38 </ b> B of the second plate 33 are used. Since the vane 31 protrudes from the guide groove 26 and prevents the lid 11 from being screwed to the housing 10 in a self-controlling manner, the vane 31 is not properly assembled to the guide groove 26. Shipment of defective products due to the occurrence of such human error can be prevented without fail.
A convex portion 38B is formed on one half of the first plate 32 (second plate 33) on the side opposite to the sliding contact surface 35 in the thickness direction, and a concave portion 39B engaging with the convex portion 38B is formed on the other half. Thereby, since the 1st plate and the 2nd plate can be formed in the same shape, the manufacturing cost of a vane can be reduced significantly.

6 to 7 show a second embodiment of the present invention.
This embodiment is different from the first embodiment in the structure of the vane 41.
As shown in FIGS. 6 to 7, the vane 41 is constituted by the first plate 42 and the second plate 43 having the same shape, and the first plate 42 and the second plate 43 have wear resistance and heat resistance. Are formed into the same rectangular substantially flat plate shape.
The first plate 42 and the second plate 43 have a thickness T that is slightly smaller than the groove width W of the guide groove 26, a short side A that is slightly smaller than a depth D of the guide groove 26, and a long side C that is the rotor 25. Are formed in a substantially flat plate shape of a rectangle (a quadrilateral) that is ½ or more of the diameter and ½ or less of the diameter of the cam surface 17. Chamfers 44 and 44 are formed in an R chamfer shape at one end of the long side C of the first plate 42 and the second plate 43, respectively.

  A pair of sliding contact surfaces 45, 45 are formed on both end surfaces of the short side A of the first plate 42 in a smooth surface, and a meat stealer 46 and ribs are formed on the end surface opposite to the chamfer 44 of the first plate 42. 47 are formed alternately and symmetrically. A convex portion 48 protrudes from one end of the end surface opposite to the chamfer 44 of the first plate 42 so as to protrude from the end surface, and a concave portion 49 is submerged in a portion symmetrical to the convex portion 48. . The convex portion 48 is set so as to be accommodated in the concave portion 49, and the depth of the concave portion 49 is set slightly deeper than the height of the convex portion 48.

  A pair of slidable contact surfaces 45, 45 are formed on both end surfaces of the short side A of the second plate 43 in a smooth surface, and a meat stealer 46 and a rib are formed on the end surface opposite to the chamfer 44 of the second plate 43. 47 are formed alternately and symmetrically. A convex portion 48 protrudes from one end of the end surface opposite to the chamfer 44 of the second plate 43 so as to protrude from the end surface, and a concave portion 49 is submerged in a portion symmetrical to the convex portion 48. . The convex portion 48 is set so as to be accommodated in the concave portion 49, and the depth of the concave portion 49 is slightly deeper than the height of the convex portion 48.

When the vane 41 is assembled to the guide groove 26, the first plate 42 and the second plate 43 are aligned with each other so that the convex portions 48 and the concave portions 49 are engaged with each other. Inserted. At this time, since the first plate 42 and the second plate 43 are formed in the same shape, the two plates having the same shape can be combined in a state where the convex portion 48 and the concave portion 49 are engaged with each other. Become.
In a normal state in which the convex portions 48 and the concave portions 49 are engaged with each other, the first plate 42 and the second plate 43 are in close contact with the end surfaces on the convex portion 48 and the concave portion 49 side. The surfaces 45, 45 constitute a pair of side surfaces parallel to each other. Therefore, the vane 41 constituted by the first plate 42 and the second plate 43 can be properly fitted into the guide groove 26.

When the lid 11 is put on the rotor 25 in a state where the vane 41 is properly fitted in the guide groove 26 and screwed to the housing 10, the vane 41 reduces the diameter of the guide groove 26 as the rotor 25 rotates. The cam surface 17, the first side surface 18, and the second side surface 19 of the pump chamber 16 are assembled in a self-controlling manner while reciprocating in the direction.
However, when the lid body 11 is put on the rotor 25 in a state where the vane 41 is improperly inserted into the guide groove 26 and is screwed to the housing 10, the convex portion 48 of the first plate 42 and the first plate 42. Since the vane 41 protrudes from the guide groove 26 by an amount corresponding to the convex portion 48 of the two plates 43, the lid body 11 is prevented from being screwed to the housing 10 in a self-controlling manner. It is possible to prevent the shipment of defective products due to the occurrence of human error such as an illegal assembly operation of the vane 41 to the guide groove 26.
The convex portion 48 and the concave portion 49 are not limited to be formed so as to mesh with each other in the length direction, but may be formed so that the respective convex portions 48 are inserted into the concave portion 49 (see FIG. 3). You may form so that it may mutually mesh | engage in a horizontal direction (refer FIG. 5).

  According to this embodiment, the same effect as the first embodiment can be obtained.

  In addition, this invention is not limited to the above embodiment, It cannot be overemphasized that it can change variously in the range which does not deviate from the summary.

  For example, the first plate and the second plate are not limited to being formed using a resin having wear resistance and heat resistance, but are formed using a metal or carbon having wear resistance and heat resistance, or other materials. May be.

  The first plate and the second plate are not limited to be formed in the same shape, but may be formed in different shapes such as a symmetrical shape.

  The chamfering is not limited to the R chamfering shape, but may be formed in a C chamfering shape.

  In the above embodiment, the case where the present invention is applied to a vacuum pump used as a vacuum source for an automobile booster brake has been described. However, the present invention is not limited to this and can be widely applied to vane pumps in general. .

DESCRIPTION OF SYMBOLS 10 ... Housing, 11 ... Cover body, 13 ... Boss, 14 ... Support hole, 15 ... Oil supply path, 15A ... Oil supply port, 16 ... Pump chamber, 17 ... Cam surface, 17a ... Contact part, 18 ... First side surface, DESCRIPTION OF SYMBOLS 19 ... 2nd side surface, 20 ... Suction port, 21 ... Suction path, 22 ... Suction valve, 23 ... Discharge port, 24 ... Discharge path,
25 ... Rotor, 26 ... Guide groove, 27 ... Recess, 28 ... Shaft part, 29 ... Oil supply path, 30 ... Coupling,
31 ... Vane, 32 ... First plate, 33 ... Second plate, 34 ... Chamfer, 35 ... Sliding contact surface, 36 ... Meat stealing, 37 ... Rib, 38, 38A, 38B ... Protrusion, 39, 39A, 39B ... Recess,
41 ... Vane, 42 ... First plate, 43 ... Second plate, 44 ... Chamfering, 45 ... Sliding contact surface, 46 ... Meat stealing, 47 ... Rib, 48 ... Projection, 49 ... Recess.

Claims (9)

A pump chamber having a cam surface and first and second side surfaces on both sides of the cam surface;
A circular rotor that is eccentrically supported so that a part of the outer peripheral surface is in sliding contact with a part of the cam surface and is rotatably supported by the pump chamber;
A guide groove formed to extend in the radial direction at the center of the rotor;
A vane that is supported so as to be able to enter and exit in the radial direction in the guide groove, and whose both ends are in sliding contact with the cam surface;
In a vane pump comprising:
The vane has a first plate having a convex portion and a concave portion;
It is composed of a second plate with a convex part and a concave part,
The first plate and the second plate are in contact with each other in a state in which the convex portions and the concave portions are engaged with each other,
Vane pump characterized by that. A pump chamber having a cam surface and first and second side surfaces on both sides of the cam surface;
A circular rotor that is eccentrically supported so that a part of the outer peripheral surface is in sliding contact with a part of the cam surface and is rotatably supported by the pump chamber;
A guide groove formed to extend in the radial direction at the center of the rotor;
A vane that is supported so as to be able to enter and exit in the radial direction in the guide groove, and whose both ends are in sliding contact with the cam surface;
In a vane pump comprising:
The vane includes a first plate and a second plate;
A sliding contact surface slidably contacting the first side surface is formed on one end surface of the first plate, and a meat stealer and a rib are formed on an end surface opposite to the sliding contact surface of the first plate. , A convex portion and a concave portion that are engaged with each other are provided,
A sliding contact surface that is in sliding contact with the second side surface is formed on one end surface of the second plate, and a stealer and a rib are formed on an end surface opposite to the sliding contact surface of the second plate. , A convex portion and a concave portion that are engaged with each other are provided,
The first plate and the second plate are in contact with each other in a state in which the convex portions and the concave portions are engaged with each other,
Vane pump characterized by that. A pump chamber having a cam surface and first and second side surfaces on both sides of the cam surface;
A circular rotor that is eccentrically supported so that a part of the outer peripheral surface is in sliding contact with a part of the cam surface and is rotatably supported by the pump chamber;
A guide groove formed to extend in the radial direction at the center of the rotor;
A vane that is supported so as to be able to enter and exit in the radial direction in the guide groove, and whose both ends are in sliding contact with the cam surface;
In a vane pump comprising:
The vane includes a first plate and a second plate;
A chamfer is formed at one end of the first plate so as to be in sliding contact with the cam surface, and a stealer and a rib are formed on the end surface opposite to the chamfer of the first plate, and they engage with each other. Protrusions and recesses are provided,
A chamfer is formed at one end of the second plate so as to be in sliding contact with the cam surface, and a meat stealer and a rib are formed on an end surface opposite to the chamfer of the second plate and engage with each other. Protrusions and recesses are provided,
The first plate and the second plate are in contact with each other in a state in which the convex portions and the concave portions are engaged with each other,
Vane pump characterized by that. A pump chamber having a cam surface and first and second side surfaces on both sides of the cam surface;
A circular rotor that is eccentrically supported so that a part of the outer peripheral surface is in sliding contact with a part of the cam surface and is rotatably supported by the pump chamber;
A guide groove formed to extend in the radial direction at the center of the rotor;
A vane that is supported so as to be able to enter and exit in the radial direction in the guide groove, and whose both ends are in sliding contact with the cam surface;
In a vane pump comprising:
The vane includes a quadrilateral plate-shaped first plate and a quadrilateral plate-shaped second plate,
Sliding contact surfaces that are in sliding contact with the first side surface and the second side surface are formed on end surfaces of one side of the first plate, respectively, and meat is formed on one end surface of the other side of the first plate. A steal and a rib are formed, and a convex part and a concave part that are engaged with each other are provided,
Sliding contact surfaces that are in sliding contact with the first side surface and the second side surface are formed on one end surface of the opposite side of the second plate, respectively, and meat is formed on one end surface of the other opposite side of the second plate. A steal and a rib are formed, and a convex part and a concave part that are engaged with each other are provided,
The first plate and the second plate are in contact with each other in a state in which the convex portions and the concave portions are engaged with each other,
Vane pump characterized by that. The first plate and the second plate are molded using resins having wear resistance and heat resistance, respectively.
The vane pump according to claim 1, 2, 3 or 4. The first plate and the second plate are formed in the same shape,
The vane pump according to claim 1, 2, 3, 4 or 5. The convex portion is formed so as to be inserted into the concave portion.
The vane pump according to claim 1, 2, 3, 4, 5, or 6. The convex portion and the concave portion are formed so as to mesh with each other in the length direction,
The vane pump according to claim 1, 2, 3, 4, 5, or 6. The convex portion and the concave portion are formed so as to mesh with each other in the thickness direction,
The vane pump according to claim 1, 2, 3, 4, 5, or 6.

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