JP2020169578A - Cartridge type vane pump and pumping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact cartridge type vane pump. SOLUTION: A connecting member 80 is provided over a body side side plate 50 and a cover member 60 to connect the body side side plate 50 and the cover member 60, and the connecting member 80 is a body side side plate 50. It is formed over the first support portion 81 to support, the second support portion 83 to support the cover member 60, and the first support portion 81 and the second support portion 83, and extends in the axial direction of the rotor 20. A groove 91, 93 extending in the circumferential direction is formed on the outer peripheral surface of the body side side plate 50 and the cover member 60, and the first support portion 81 and the second support portion 83 are formed. Are housed in the grooves 91 and 93 formed in the body side side plate 50 and the cover member 60, respectively. [Selection diagram] FIG. 4

Description

The present invention relates to a cartridge type vane pump and a pump device including a cartridge type vane pump.

Patent Document 1 describes a rotor, a plurality of vanes, a cam ring, a side member, a cover member, and a side member and a cover member provided over the side member and the cover member across the outer peripheral surface of the cam ring. A cartridge type vane pump including a connecting member to be connected is disclosed.

In the cartridge type vane pump described in Patent Document 1, the side member and the cover member are connected by the connecting member, and the rotor, the vane, and the cam ring are held between the cover member and the side member. The connecting member intersects the connecting portion connected to one of the side member and the cover member, the extending portion extending from the connecting portion in the axial direction of the rotor toward the other of the side member and the cover member, and the extending portion. It has a support portion that protrudes from the extending portion and supports the other side of the side member and the cover member.

Japanese Unexamined Patent Publication No. 2018-189057

Here, in the first embodiment of FIGS. 1 to 5 of Patent Document 1, since the support portion is inserted into the groove formed in the side plate, the support portion has a bulge outward in the radial direction of the side plate. Therefore, there is a problem that the radial dimension of the cartridge type vane pump becomes large.

Further, in the second embodiment of FIGS. 6 to 9 of Patent Document 1, since the connecting portion is rotatably inserted into the hole formed in the side plate, the connecting portion has a bulge outward in the radial direction of the side plate. .. Therefore, as in the first embodiment, there is a problem that the radial dimension of the cartridge type vane pump becomes large.

The present invention has been made in view of such technical problems, and an object of the present invention is to provide a compact cartridge type vane pump.

The present invention is a cartridge type vane pump attached to the body of a fluid pressure device, which is provided over a side member and a cover member, includes a connecting member for connecting the side member and the cover member, and the connecting member is a side. A first support portion that supports the member, a second support portion that supports the cover member, and an extension portion that is formed over the first support portion and the second support portion and extends in the axial direction of the rotor. , And a groove extending in the circumferential direction is formed on the outer peripheral surface of the side member and the cover member, and the first support portion and the second support portion are formed in the groove formed in the side member and the cover member. Each is characterized by being housed.

In the present invention, the first support portion and the second support portion are housed in grooves extending in the circumferential direction on the outer peripheral surfaces of the side member and the cover member, respectively. Therefore, since the first support portion and the second support portion are suppressed from bulging outward in the radial direction of the side member and the cover member, the radial dimension of the cartridge type vane pump can be reduced.

Further, in the present invention, on the outer peripheral surfaces of the side member, the cam ring, and the cover member, linear grooves are formed in which the grooves formed in the side member and the cover member communicate with each other, and the extending portion is linear. It is characterized in that it is housed in the groove of.

In the present invention, the extending portion is housed in a linear groove that communicates the respective grooves formed in the side member and the cover member. Therefore, since the extension portion is suppressed from bulging outward in the radial direction of the side member and the cover member, the radial dimension of the cartridge type vane pump can be reduced.

Further, in the present invention, the extending portions are formed in a pair in a straight line, and one of the first support portion and the second supporting portion is formed in a pair extending in opposite directions from one end of the pair of extending portions. The other of the first support portion and the second support portion is characterized in that it is formed over the other end portions of the pair of extending portions.

In the present invention, one of the first support portion and the second support portion extends in opposite directions from one end of the pair of extending portions to form a pair. Therefore, since the side member or the cover member is fixed by receiving the opposing force from the first support portion or the second support portion, the side member and the cover member can be firmly connected.

Further, the present invention is a pump device, which is formed between the above-mentioned cartridge type vane pump, a body accommodating the cartridge type vane pump, and the outer circumference of the body and the cartridge type vane pump, and communicates with a suction port of the cartridge type vane pump. A low-pressure chamber, which is a suction passage, is provided, and the connecting member is housed in the low-pressure chamber.

In the present invention, since the radial dimension of the cartridge type vane pump is small, the low pressure chamber and the body can be made small, and the pump device can be made small. Further, the connecting member holds the rotor, vane and cam ring between the cover member and the side member. Therefore, the cartridge type vane pump can be easily attached to the body of the pump device, and the assemblability of the pump device can be improved.

According to the present invention, the cartridge type vane pump can be made compact.

FIG. 1 is a cross-sectional view of a pump device including a cartridge type vane pump according to an embodiment of the present invention. FIG. 2 is a plan view of the rotor, vane, and cam ring. FIG. 3 is a front view of the cartridge type vane pump shown in FIG. 1, and the connecting member is not shown. FIG. 4 is a perspective view of the cartridge type vane pump according to the embodiment of the present invention, showing a state in which the connecting member is removed. FIG. 5 is a perspective view of a cartridge type vane pump according to an embodiment of the present invention, showing a state in which a connecting member is attached.

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

The cartridge type vane pump (hereinafter, simply referred to as “vane pump”) 100 according to the embodiment of the present invention is used as a fluid pressure supply source of a fluid pressure device (for example, a power steering device, a transmission, etc.) mounted on a vehicle. Be done. Here, the vane pump 100 that uses hydraulic oil as the hydraulic fluid will be described, but a water-soluble alternative liquid such as hydraulic water may be used as the hydraulic fluid.

In the description of each embodiment, the surface of each member may be referred to as "upper surface" or "lower surface", but for convenience of explanation, the surface of each member is merely referred to as such, and the orientation and mounting direction of the vane pump 100. Is not limited to.

First, the vane pump 100 according to the embodiment of the present invention and the pump device 1000 including the vane pump 100 will be described with reference to FIGS. 1 to 5.

As shown in FIG. 1, the vane pump 100 includes a drive shaft 10, a rotor 20 connected to the drive shaft 10, a plurality of vanes 30 provided on the rotor 20, and a cam ring 40 accommodating the rotor 20 and the vanes 30. To be equipped. The rotor 20 rotates together with the drive shaft 10 by the power transmitted from the drive source (for example, an engine, an electric motor, etc.) to the drive shaft 10.

In the following, the direction along the rotation center axis of the rotor 20 is referred to as "axial direction", the radial direction centered on the rotation center axis of the rotor 20 is referred to as "radial direction", and the direction around the rotation center axis of the rotor 20 is referred to as "axial direction". It is called "circumferential direction".

FIG. 2 is a plan view of the rotor 20, the vane 30, and the cam ring 40. As shown in FIG. 2, a plurality of slits 21 are formed radially at predetermined intervals in the rotor 20. The slit 21 opens on the outer peripheral surface of the rotor 20, and the vane 30 is inserted into each slit 21 so as to reciprocate in the radial direction.

The tip 31 of the vane 30 faces the inner peripheral surface 40a of the cam ring 40. The base end portion 32 of the vane 30 is located in the slit 21, and the back pressure chamber 22 is formed by the slit 21 and the vane 30.

When the rotor 20 rotates, the vane 30 is urged radially outward by centrifugal force and protrudes from the slit 21. As a result, the tip 31 of the vane 30 is in sliding contact with the inner peripheral surface 40a of the cam ring 40, and the pump chamber 41 is defined by the rotor 20, the adjacent vanes 30, and the cam ring 40.

The inner peripheral surface 40a of the cam ring 40 is formed in a substantially oval shape. Therefore, as the rotor 20 rotates, the vane 30 reciprocates in the radial direction with respect to the rotor 20. As the vane 30 reciprocates, the pump chamber 41 repeats expansion and contraction. Hereinafter, the inner peripheral surface 40a of the cam ring 40 is also referred to as an “inner peripheral cam surface 40a”.

In the vane pump 100, the vane 30 reciprocates twice while the rotor 20 makes one rotation, and the pump chamber 41 repeats expansion and contraction twice. That is, the vane pump 100 alternately has two expansion regions 42a and 42c in which the pump chamber 41 expands and two contraction regions 42b and 42d in which the pump chamber 41 contracts in the circumferential direction.

As shown in FIG. 1, the vane pump 100 has a body side side plate (side member) 50 that abuts on one end surface 40b of the cam ring 40 and a cover side side plate 56 that abuts on the other end surface 40c of the cam ring 40. Be prepared. The upper surface 50c of the body-side side plate 50 faces one end face of the rotor 20, and the lower surface 56b of the cover-side side plate 56 faces the other end face of the rotor 20.

The rotor 20 and the vane 30 are in sliding contact with the upper surface 50c of the body-side side plate 50 and the lower surface 56b of the cover-side side plate 56. The pump chamber 41 (see FIG. 2) is sealed by the upper surface 50c of the body-side side plate 50 and the lower surface 56b of the cover-side side plate 56.

The body-side side plate 50 is formed with a shaft hole 51 that opens to the upper surface 50c. The shaft hole 51 is formed coaxially with the rotation center axis of the rotor 20, and one end 11 of the drive shaft 10 is inserted into the shaft hole 51.

A bearing 52 is provided between the outer peripheral surface of one end 11 of the drive shaft 10 and the inner peripheral surface of the shaft hole 51. The body side side plate 50 rotatably supports the drive shaft 10 via the bearing 52.

A shaft hole 57 penetrating in the axial direction is formed in the cover side side plate 56. The shaft hole 57 is formed coaxially with the rotation center axis of the rotor 20, and the drive shaft 10 inserts the shaft hole 57.

As shown in FIGS. 2 and 3, the cam ring 40, the body-side side plate 50, and the cover-side side plate 56 are formed with a suction port 43 that communicates the external space of the vane pump 100 with the pump chamber 41. The suction port 43 is located in the expansion regions 42a and 42c. The hydraulic oil outside the vane pump 100 is sucked into the pump chamber 41 through the suction port 43 as the rotor 20 rotates.

As shown in FIG. 1, the body-side side plate 50 is formed with a discharge port 53 that penetrates in the axial direction and communicates the pump chamber 41 (see FIG. 2) with the outer space of the vane pump 100. The discharge port 53 is located in the contraction regions 42b, 42d (see FIG. 2). The hydraulic oil in the pump chamber 41 is discharged from the discharge port 53 to the outside of the vane pump 100 as the rotor 20 rotates.

Further, the vane pump 100 includes a cover 61 attached to the body 70 of the pump device 1000 using bolts (not shown). By attaching the cover 61 to the body 70, the cam ring 40, the body side side plate 50, and the cover side side plate 56 are fixed to the body 70.

In the vane pump 100, the cover 61 is formed separately from the cover side side plate 56, and the lower surface 61b of the cover 61 comes into contact with the upper surface 56c of the cover side side plate 56. The cover member 60 is composed of the cover 61 and the cover side side plate 56.

A shaft hole 66 penetrating in the axial direction is formed in the cover 61. The shaft hole 66 is formed coaxially with the rotation center axis of the rotor 20, and the drive shaft 10 inserts the shaft hole 66. The cover 61 rotatably supports the drive shaft 10 via bearings (not shown).

A pin hole (not shown) into which a dowel pin 46 (see FIG. 2) is press-fitted is formed in the lower surface 61b of the cover 61. The dowel pin 46 is inserted into the pin hole of the cover side side plate 56 and the cam ring 40, and the pin hole of the body side side plate 50. The dowel pin 46 positions the cover 61, the cover-side side plate 56, and the body-side side plate 50 with respect to the cam ring 40.

The cam ring 40, the body-side side plate 50, and the cover-side side plate 56 of the vane pump 100 are housed in a housing recess 71 formed in the body 70. The accommodating recess 71 is composed of a first recess 71a that opens in the upper surface 70a of the body 70, a second recess 71b that opens in the bottom surface of the first recess 71a, and a third recess 71c that opens in the bottom surface of the second recess 71b. It is composed.

The opening of the first recess 71a is closed by fitting the fitting portion 64 of the cover 61 to the inner peripheral surface of the first recess 71a. Details of the configuration of the cover 61 will be described later. The inner peripheral surface of the first recess 71a faces the outer peripheral surface 40d of the cam ring 40 and the outer peripheral surface 56d of the cover-side side plate 56 at intervals. The first recess 71a, the cam ring 40, and the cover-side side plate 56 form an annular low-pressure chamber 72 that is part of the suction passage 73.

The low pressure chamber 72 communicates with the pump chamber 41 through the suction port 43 (see FIG. 3) and also communicates with a tank (not shown) through the suction passage 73 formed in the body 70. When the vane pump 100 operates, the hydraulic oil in the tank is sucked into the pump chamber 41 through the suction passage 73, the low pressure chamber 72, and the suction port 43.

The bottom surface of the third recess 71c faces the lower surface 50b of the body-side side plate 50 at a distance. The high pressure chamber 74 is formed by the third recess 71c and the body side side plate 50.

The high pressure chamber 74 communicates with the pump chamber 41 through the discharge port 53 and also communicates with the discharge passage 75 formed in the body 70. When the vane pump 100 operates, the hydraulic oil in the pump chamber 41 is discharged to the discharge passage 75 through the discharge port 53 and the high pressure chamber 74.

The high pressure chamber 74 also communicates with the back pressure chamber 22 (see FIG. 2), and the hydraulic oil in the high pressure chamber 74 is guided to the back pressure chamber 22. Therefore, the vane 30 is urged outward in the radial direction not only by the centrifugal force but also by the pressure in the back pressure chamber 22.

A part of the body side side plate 50 is fitted to the inner peripheral surface of the second recess 71b. An annular sealing member 76 is provided between the lower surface 50b of the body-side side plate 50 and the bottom surface of the second recess 71b. The seal member 76 closes the gap between the lower surface 50b of the body-side side plate 50 and the bottom surface of the second recess 71b. The sealing member 76 can prevent the hydraulic oil from moving back and forth between the low pressure chamber 72 and the high pressure chamber 74 through this gap.

When the cover 61 is attached to the body 70, the sealing member 76 is compressed by the body side plate 50 and the body 70, and the body side plate 50, the cam ring 40, and the cover side plate 56 are directed toward the cover 61. Bounce. Therefore, the hydraulic oil in the pump chamber 41 (see FIG. 2) is unlikely to leak from between the cam ring 40 and the body side side plate 50 and between the cam ring 40 and the cover side side plate 56. Therefore, the discharge performance of the vane pump 100 can be improved.

The cover 61 has a main body portion 63 that contacts the upper surface 70a (see FIG. 1) of the body 70, a fitting portion 64 that fits into the inner peripheral surface of the first recess 71a of the body 70, and an outer diameter of the fitting portion 64. It has a small diameter portion 65 having a smaller outer diameter. The fitting portion 64 projects axially from the main body portion 63. An annular groove 64a for accommodating an O-ring (not shown) is formed on the outer peripheral surface of the fitting portion 64. By fitting the inner peripheral surface of the first recess 71a of the body 70 with the fitting portion 64, the communication between the low pressure chamber 72 and the outside of the vane pump 100 is cut off. The small diameter portion 65 projects from the fitting portion 64 in the axial direction on the side opposite to the main body portion 63. The tip surface of the small diameter portion 65 abuts on the upper surface 56c of the cover side side plate 56.

The vane pump 100 is provided over the body-side side plate 50 and the cover member 60, and further includes a connecting member 80 that connects the body-side side plate 50 and the cover member 60. The connecting member 80 connects the body side side plate 50 and the cover member 60 by being housed in a groove formed on the outer peripheral surface of the body side side plate 50, the cam ring 40, the cover side side plate 56, and the cover 61. To do.

Next, the groove in which the connecting member 80 is housed will be described with reference to FIGS. 4 and 5.

A groove 91 extending in the circumferential direction is formed on the outer peripheral surface of the body side side plate 50. A groove 93 extending in the circumferential direction is formed on the outer peripheral surface of the small diameter portion 65 of the cover 61. A linear groove 92 that connects the groove 91 and the groove 93 is formed on the outer peripheral surfaces of the body side side plate 50, the cam ring 40, the cover side side plate 56, and the small diameter portion 65 of the cover 61. The groove 92 is continuously formed over the body side side plate 50, the cam ring 40, the cover side side plate 56, and the small diameter portion 65 of the cover 61. In this embodiment, the grooves 92 are formed in pairs at a distance of 180 °. In addition, in FIGS. 4 and 5, only one of the pair of grooves 92 is shown.

Next, the configuration of the connecting member 80 will be described.

The connecting member 80 is formed over a first support portion 81 that supports the body-side side plate 50, a second support portion 83 that supports the cover 61, a first support portion 81, and a second support portion 83, and is a rotor. It has a pair of extending portions 82 extending linearly in the axial direction of 20. In the present embodiment, the first support portions 81 extend in opposite directions from one end of each of the pair of extending portions 82 to form a pair. Further, the second support portion 83 is formed over the other ends of the pair of extending portions 82, and connects the pair of extending portions 82 to each other.

The pair of first support portions 81 of the connecting member 80 are housed in a groove 91 formed on the outer peripheral surface of the body side side plate 50. The pair of extending portions 82 are housed in a pair of grooves 92 formed continuously over the outer peripheral surfaces of the body side side plate 50, the cam ring 40, the cover side side plate 56, and the small diameter portion 65 of the cover 61, respectively. The cover. The second support portion 83 is housed in a groove 93 formed on the outer peripheral surface of the small diameter portion 65 of the cover 61.

In this way, the connecting member 80 is accommodated in the groove 91, the pair of grooves 92, and the groove 93 over the entire length. The pair of first support portions 81 support the body side side plate 50, and the second support portion 83 supports the cover 61, whereby the body side side plate 50 and the cover 61 are connected.

The grooves 91 to 93 are formed to a depth that can accommodate the connecting member 80.

Next, a method of assembling the vane pump 100 will be described.

First, the dowel pin 46 is press-fitted into the pin hole (not shown) of the cover 61. After that, the cover side side plate 56 and the cam ring 40 are superposed on the cover 61 in this order. At this time, the dowel pin 46 is inserted into the pin hole of the cover side side plate 56 and the cam ring 40.

Next, the rotor 20 is housed in the inner circumference of the cam ring 40, and the drive shaft 10 is inserted into the spline hole of the rotor 20, the shaft hole 57 of the cover side plate 56, and the shaft hole 66 of the cover 61. The vane 30 is housed in the slit 21 of the rotor 20, and the tip portion 31 of the vane 30 faces the inner peripheral cam surface 40a of the cam ring 40.

Next, the body side side plate 50 is placed on the cam ring 40. At this time, the dowel pin 46 is inserted into the pin hole of the body side side plate 50, and the drive shaft 10 is inserted into the shaft hole 51 of the body side side plate 50.

Next, the second support portion 83 of the connecting member 80 is housed in the groove 93 of the cover 61, and the pair of extending portions 82 are the body side side plate 50, the cam ring 40, the cover side side plate 56, and the small diameter portion of the cover 61. It is housed in a pair of grooves 92 formed on the outer peripheral surface of 65, and the first support portion 81 is housed in the groove 91 of the body side side plate 50.

In this way, the cover 61 and the body side side plate 50 are connected by the connecting member 80, so that the rotor 20, the vane 30, the cam ring 40, and the cover side are connected between the cover 61 and the body side side plate 50. The side plate 56 is held and the assembly of the vane pump 100 is completed.

When the cover 61 and the body side side plate 50 are connected by the connecting member 80, the movement of the body side side plate 50 in the direction away from the cover 61 is restricted. Therefore, even when only the cover 61 is lifted with the lower surface 61b of the cover 61 facing downward, the cover side side plate 56, the rotor 20, the vane 30, the cam ring 40, and the body side side plate 50 are not separated from the cover 61. Therefore, the vane pump 100 can be moved integrally without being disassembled due to vibration during transportation, and the vane pump 100 can be easily attached to the body 70, so that the attachability of the vane pump 100 can be improved. it can.

Further, the connecting member 80 is housed in the grooves 91 to 93. Therefore, the radial dimension of the vane pump 100 becomes smaller. Further, since the low pressure chamber 72 and the body 70 can be made smaller, the pump device 1000 can be made smaller.

According to the above first embodiment, the following effects are obtained.

In the vane pump 100, the connecting member 80 is housed in the body side side plate 50, the cam ring 40, the cover side side plate 56, and the grooves 91 to 93 formed on the outer peripheral surfaces of the cover 61. Therefore, the first support portion 81 and the second support portion 83 of the connecting member 80 do not bulge outward in the radial direction of the body side side plate 50 and the cover member 60, and the radial dimension of the vane pump 100 can be reduced. it can. Therefore, the vane pump 100 can be made compact. Further, since the vane pump 100 can be made compact, the low pressure chamber 72 and the body 70 of the pump device 1000 can be made smaller, and the pump device 1000 can be made smaller.

Further, the connecting member 80 is accommodated in the grooves 91 to 93 over the entire length of the first support portion 81, the pair of extending portions 82, and the second support portion 83. Therefore, the body-side side plate 50 and the cover 61 do not bulge outward in the radial direction, and the radial dimension of the vane pump 100 can be reduced.

Further, the connecting member 80 has contacts with the grooves 91 to 93 over the entire length of the first support portion 81, the pair of extending portions 82, and the second support portion 83. Therefore, the contact area between the connecting member 80 and the vane pump 100 becomes large, and rattling of the vane pump 100 can be suppressed.

Further, since the body side side plate 50 and the cover 61 can be easily connected only by accommodating the connecting member 80 in the grooves 91 to 93, the assembling property of the vane pump 100 is improved.

Further, in the vane pump 100, the first support portions 81 of the connecting member 80 extend in opposite directions from one end of the pair of extending portions 82 to form a pair. Therefore, since the body-side side plate 50 is fixed by receiving the opposing force from the first support portion 81, the body-side side plate 50 and the cover 61 can be firmly connected. Further, since the connecting member 80 is prevented from falling out of the grooves 91 to 93, it is possible to prevent the vane pump 100 from being unintentionally disassembled.

Further, in the vane pump 100, the rotor 20, the vane 30, the cam ring 40 and the cover side side plate 56 are held between the cover 61 and the body side side plate 50 by the connecting member 80. Therefore, the vane pump 100 can be integrally moved without being disassembled due to vibration during transportation, and the vane pump 100 can be easily attached to the body 70 of the pump device 1000, so that the vane pump 100 can be assembled easily. Can be improved.

Further, in the vane pump 100, the grooves 91 to 93 open to the outer peripheral surfaces of the body side side plate 50, the cam ring 40, the cover side side plate 56, and the cover 61. Therefore, the connecting member 80 can be easily pulled out by simply pulling it away from the grooves 91 to 93. Therefore, since the connection between the body side side plate 50 and the cover 61 by the connecting member 80 can be easily released, the vane pump 100 can be easily disassembled.

A modified example of this embodiment will be described below. The following modifications are also within the scope of the present invention, and it is possible to combine the following modifications with each configuration of the above embodiment, or to combine the following modifications with each other.

(1) In the above embodiment, the grooves 91 to 93 are formed to a depth that can accommodate the connecting member 80. Instead, the grooves 91 to 93 may have a depth at which a part of the connecting member 80 is exposed from the grooves 91 to 93.

(2) In the above embodiment, the connecting member 80 has two first support portions 81 and two extending portions 82. Instead of this, the connecting member 80 may have a configuration having three or more first support portions 81 and extending portions 82.

(3) In the above embodiment, in the connecting member 80, a pair of first support portions 81 are housed in the groove 91 to support the body side side plate 50, and the second support part 83 is housed in the groove 93 to cover 61. Support. Instead of this, in the connecting member 80, a pair of first support portions 81 are housed in the groove 93 to support the cover 61, and a second support part 83 is housed in the groove 91 to support the body side side plate 50. It may be a configuration.

Hereinafter, the configurations, actions, and effects of the embodiments of the present invention will be collectively described.

In the cartridge type vane pump 100 attached to the body 70 of the fluid pressure device, the rotor 20 driven to rotate, the plurality of vanes 30 provided on the rotor so as to reciprocate in the radial direction of the rotor 20, and the plurality of vanes 30 are in sliding contact with each other. The cam ring 40 having the inner peripheral cam surface 40a, the body side side plate 50 that abuts on one end surface 40b of the rotor 20 and the cam ring 40, and the other end surface 40c of the rotor 20 and the cam ring 40 are abutted and attached to the body 70. A cover member 60, a connecting member 80 provided over the body side side plate 50 and the cover member 60, and connecting the body side side plate 50 and the cover member 60 are provided, and the connecting member 80 is provided on the body side side. A first support portion 81 that supports the plate 50, a second support portion 83 that supports the cover member 60, and a first support portion 81 and a second support portion 83 that are formed in the axial direction of the rotor 20. Grooves 91 and 93 extending in the circumferential direction are formed on the outer peripheral surfaces of the body side side plate 50 and the cover member 60, and the first support portion 81 and the second support portion 81 have an extending portion 82. The support portion 83 is housed in the grooves 91 and 93 formed in the body side side plate 50 and the cover member 60, respectively.

In this configuration, the first support portion 81 and the second support portion 83 are housed in the grooves 91 and 93 extending in the circumferential direction on the outer peripheral surfaces of the body side side plate 50 and the cover member 60, respectively. Therefore, since the first support portion 81 and the second support portion 83 are suppressed from bulging outward in the radial direction of the body side side plate 50 and the cover member 60, the radial dimension of the cartridge type vane pump 100 can be reduced. it can. Therefore, the cartridge type vane pump 100 can be made compact.

Further, on the outer peripheral surfaces of the body side side plate 50, the cam ring 40, and the cover member 60, linear grooves 92 communicating with the respective grooves 91 and 93 formed in the body side side plate 50 and the cover member 60 are formed. The extending portion 82 is accommodated in the linear groove 92.

In this configuration, the extending portion 82 is housed in a linear groove 92 communicating with the respective grooves 91 and 93 formed in the body side side plate 50 and the cover member 60. Therefore, since the extending portion 82 is suppressed from bulging outward in the radial direction of the body side side plate 50 and the cover member 60, the radial dimension of the cartridge type vane pump 100 can be reduced.

Further, the extending portions 82 are formed in a pair in a straight line, and one of the first supporting portion 81 and the second supporting portion 83 extends in opposite directions from one end of the pair of extending portions 82 to form a pair. The other end of the first support portion 81 and the second support portion 83 is formed over the other end portions of the pair of extending portions 82.

In this configuration, the first support portion 81 or the second support portion 83 of the connecting member 80 extends in opposite directions from one end of the pair of extending portions 82 to form a pair. Therefore, the body-side side plate 50 or the cover member 60 is fixed by receiving an opposing force from the first support portion 81 or the second support portion 83, so that the body-side side plate 50 and the cover member 60 are firmly connected. can do.

Further, the pump device 1000 includes the above-mentioned cartridge type vane pump 100, a body 70 accommodating the cartridge type vane pump 100, and a suction port 43 of the cartridge type vane pump 100 formed between the body 70 and the outer periphery of the cartridge type vane pump 100. A low-pressure chamber 72, which is a suction passage 73 for communication, is provided, and the connecting member 80 is housed in the low-pressure chamber 72.

In this configuration, since the radial dimension of the cartridge type vane pump 100 becomes small, the low pressure chamber 72 and the body 70 can be made small, and the pump device 1000 can be made small. Further, the connecting member 80 holds the rotor 20, the vane 30, and the cam ring 40 between the cover member 60 and the body side side plate 50. Therefore, the cartridge type vane pump 100 can be easily attached to the body 70 of the pump device 1000, and the assembling property of the pump device 1000 can be improved.

Although the embodiments of the present invention have been described above, the above embodiments are only a part of the application examples of the present invention, and the technical scope of the present invention is limited to the specific configurations of the above embodiments. Absent.

20 ... rotor, 30 ... vane, 40 ... cam ring, 40a ... inner peripheral cam surface, 40b ... end face, 40c ... end face, 40d ... outer peripheral surface, 41 ... pump chamber, 50 ... body side side plate (side member), 50d ... Outer peripheral surface, 60 ... cover member, 70 ... body, 72 ... low pressure chamber, 80 ... connecting member, 81 ... first support part, 82 ... extension part, 83 ... second support part, 91, 92, 93 ... groove, 100 ... Cartridge type vane pump, 1000 ... Pump device

Claims (4)

A cartridge type vane pump attached to the body of a fluid pressure device.
Rotationally driven rotor and
A plurality of vanes provided on the rotor so as to be reciprocating in the radial direction of the rotor,
A cam ring having an inner cam surface on which the plurality of vanes are in sliding contact,
A side member that abuts on one end face of the rotor and the cam ring,
A cover member that comes into contact with the other end face of the rotor and the cam ring and is attached to the body.
A connecting member provided over the side member and the cover member and connecting the side member and the cover member is provided.
The connecting member
A first support portion that supports the side member and
A second support portion that supports the cover member and
It has an extending portion formed over the first supporting portion and the second supporting portion and extending in the axial direction of the rotor.
Grooves extending in the circumferential direction are formed on the outer peripheral surfaces of the side member and the cover member.
The cartridge type vane pump, wherein the first support portion and the second support portion are housed in the grooves formed in the side member and the cover member, respectively. On the outer peripheral surfaces of the side member, the cam ring, and the cover member, linear grooves are formed in which the side members and the respective grooves formed in the cover member communicate with each other.
The cartridge-type vane pump according to claim 1, wherein the extending portion is housed in the linear groove. A pair of the extending portions are formed in a straight line, and the extending portions are formed in a straight line.
One of the first support portion and the second support portion extends in opposite directions from one end of the pair of extending portions to form a pair.
The cartridge-type vane pump according to claim 1 or 2, wherein the other of the first support portion and the second support portion is formed over the other end portions of the pair of extending portions. It ’s a pump device,
The cartridge type vane pump according to any one of claims 1 to 3,
With the body accommodating the cartridge type vane pump
A low-pressure chamber, which is a suction passage formed between the body and the outer periphery of the cartridge-type vane pump and communicates with the suction port of the cartridge-type vane pump, is provided.
A pump device in which the connecting member is housed in the low pressure chamber.

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