KR101864218B1 - Variable vane pump - Google Patents

Abstract

The present invention controls the amount of eccentricity to be maximized so that a large amount of oil can be sucked and discharged from the pump at the time of low speed operation and the amount of eccentricity is reduced so that a small amount of oil can be sucked and discharged at high speed, And it is an object of the present invention to provide a variable vane pump capable of reducing heat generation and improving fuel economy by realizing a variable capacity.
In order to accomplish the above object, a variable vane pump according to the present invention includes a vane 100 connected to a drive shaft 300 by a sprue and performing linear motion along a plurality of vane grooves distributed in a circumferential direction, A pinion gear 800 formed to maintain eccentricity on one side of an outer circumferential surface of the cylinder ring 400; And a relief valve (870) connected to the pinion gear (800).

Description

Variable Vane Pump {VARIABLE VANE PUMP}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a variable vane pump, and more particularly, to a variable vane pump for increasing or decreasing a discharge flow rate per pump rotation using oil pressure.

The variable vane pump according to the prior art has a cylinder ring fixed even when the pressure in the first pressure chamber and the pressure in the second pressure chamber of the control valve for moving the internal pressure of the pump and the cylinder ring are equal to each other, Respectively.

Such a conventional variable vane pump is shown in Fig.

Referring to FIG. 1, the variable vane pump 10 according to the related art is integrally connected to the rotor shaft 131 in the body 14, and has a linear motion along a plurality of vane grooves distributed in a direction. A rotor 13 in which a vane 15 for rotating the vane 150 is inserted and a rotor 13 which is rotatably supported by an outer periphery of the rotor 13 to be eccentric with the vane 150, A third elastic member support guide 60 formed to support the cylinder ring 16 so as to maintain the eccentricity and a second elastic member support guide 60 formed on the outer peripheral surface of the cylinder ring 16, And on the other side, a control valve 30 for supporting the cylinder ring 16.

The control valve 30 includes a valve piston 41 that horizontally moves in a side wall surrounding the side surface of the valve hole, a first elastic member 32 that supports the valve piston 41, A first pressure chamber 20 located at one side of the valve piston 41 in the side wall and a second pressure chamber 31 located at the other side of the valve piston 41 of the side wall ship. And pressure chambers 91 and 92 for reducing wear due to friction between the control valve 30 and the valve hole. The pressure difference between the first pressure chamber 20 and the second pressure chamber 31 The valve piston 41 is moved.

The conventional variable vane pump 10 includes a guide body having an upper U-shaped concave portion and having a through hole penetrating the upper portion and the lower portion, an adjusting bolt penetrating through the through hole from the lower portion, And a guide member having a tapered taper nut which is screwed to an end portion of the adjusting bolt penetrating through the through holes when one side of the formed valve piston corresponds to the through hole of the guide body and is positioned in a U- 40).

The guide member 40 has a U-shaped concave portion connected to one side of the valve piston 41 and a guide member moving space 50 formed at the center portion of the control valve 30 in a direction perpendicular to the control valve 30 The guide member 40 moves and supports the cylinder ring 16 by the movement of the valve piston 41. As shown in Fig.

That is, the pressure of the third elastic member 62 and the pressure of the eccentric sectional area of the cylinder ring 16 are applied to the guide member 40 having the inclined angle, so that the cylinder ring 16 is moved.

However, the conventional variable vane pump including the guide member 40 having the oblique surface has the following problems.

That is, since the eccentric cross-sectional area of the cylinder ring 16 acts on the lower end of the pressure-reducing valve through the guide member 40, a high frictional force is generated and the durability of the pressure-reducing valve is reduced due to such high frictional force.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a gear and pinion gear that can reduce high frictional force when eccentric sectional area pressure of a cylinder ring acts on a lower end of a pressure reducing valve, And to provide a variable vane pump using the variable vane pump.

Another object of the present invention is to provide a variable vane pump for an automatic transmission that uses left and right oblique surfaces different in angle from each other with respect to a peak point, and a power steering variable vane pump in which the oblique surface of the pinion gear uses a constant angle in one direction.

In order to accomplish the above object, a variable vane pump according to the present invention includes a vane 100 connected to a drive shaft 300 by a sprue and performing linear motion along a plurality of vane grooves distributed in a circumferential direction, A pinion gear 800 formed to maintain eccentricity on one side of an outer circumferential surface of the cylinder ring 400; And a relief valve (870) connected to the pinion gear (800).

The relief valve 870 inserted into the one side of the variable vane pump in accordance with the present invention has a hollow inside and a side opened to allow the pinion gear of the pinion gear 800 to rotate, And a second elastic member (874) inserted into the recess, and a second gear member (874) inserted in the second gear member (810) A bushing 875 which supports the elastic member 874 and has a recess on the opposite side of the second elastic member 874, a relief valve ball 873 partly inserted into the recess of the bushing 875, A second cap 872 covering the recess formed at one side of the lever gear 700 so that the bushing 875 and the relief valve ball 873 are not separated from the second elastic member 874, A first elastic member 871 for supporting the second cap, a second elastic member 871 for supporting the first elastic member 871, And a first cap (880) covering one side of the space so that the gear (700) and the first elastic member (871) are not separated from the space, A second pressure chamber P2 is formed between the first cap 880 and the first pressure chamber P1 on the other side of the lever 700 in the space.

The variable vane pump according to the present invention further includes a roller bearing 840 between the one side of the outer circumferential surface of the cylinder ring 400 and the pinion gear 800 to control the amount of eccentricity of the cylinder ring 400 .

The variable vane pump according to the present invention has a concave jaw in a region spaced apart from a roller bearing 840 formed in the cylinder ring 400 by a predetermined distance, And further includes a fixing pin 850 for preventing a predetermined rotation radius from being exceeded during rotation.

The variable vane pump according to the present invention further includes a suction port 500 through which the oil is sucked, a suction path 510 through which the sucked oil flows through the suction port 500, And a discharge port 600 through which the oil moved through the discharge flow path 610 is discharged.

In addition, the variable vane pump according to the present invention increases the oil in the first pressure chamber P1 when the engine of the vehicle is rotated at high speed, and the increased oil is generated by the to- The frictional resistance pressure of the first pressure chamber P1 is greater than the tension of the first elastic member 871 so that the lever 700 is moved in the direction of the second pressure chamber P2.

In the variable vane pump according to the present invention, when the engine of the vehicle is rotated at low speed, when the oil in the first pressure chamber P1 is reduced, the reduced oil is generated by the to- The frictional resistance of the first pressure chamber P1 becomes smaller than the tension of the first elastic member 871 so that the lever 700 moves in the direction of the first pressure chamber P1.

In the variable vane pump according to the present invention, when viewed from the front, the pinion gear 800 is rotated at a low speed having a highest peak point at a predetermined position in a region opposite to the region where the pinion gear 810 is formed Area 830 and a right side oblique 820 at a predetermined angle to the right side of the low speed area 830. One area of the right oblique side 820 is a high speed area.

In the variable vane pump according to the present invention, when viewed from the front, the pinion gear 800 has a highest peak height at a predetermined position on a region opposite to the region where the pinion gear 810 is formed, The left side and the right side of the intermediate speed region 830 and the middle speed region 830 have a predetermined angle to the left and right sides of the middle speed region 830. The left side of the middle speed region 830 has a low speed region 831, Area 832. [

According to the present invention described above, instead of the guide member, the durability of the relief valve is enhanced by using the gear gear and the pinion gear which can reduce the high frictional force when the eccentric sectional area pressure of the cylinder ring acts on the lower end of the reducing valve It is effective.

Further, it is possible to provide a variable vane pump for an automatic transmission that uses left and right oblique surfaces different in angle from each other with respect to a peak point, and a power steering variable vane pump in which the oblique surface of the pinion gear uses a constant angle in one direction.

1 is a front sectional view showing a structure of a variable vane pump according to the prior art.
2 is a front sectional view showing a maximum flow rate at a low speed in the structure of a variable vane pump used for commercial vehicle power steering according to the present invention.
3 is a front sectional view showing a minimum flow rate at a high speed in the structure of a variable vane pump used in a commercial vehicle power steering according to the present invention.
4 is a front sectional view showing a case where the variable vane pump for an automatic transmission according to the present invention has a low speed.
5 is a front sectional view showing a case where the variable vane pump for an automatic transmission according to the present invention is medium speed.
6 is a front sectional view showing the variable vane pump for an automatic transmission according to the present invention at a high speed.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, the terms " part, "" module," and the like, which are described in the specification, refer to a unit for processing at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

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

FIG. 2 is a front sectional view showing a maximum flow rate at a low speed in a structure of a variable vane pump used in a commercial vehicle power steering according to the present invention, and FIG. 3 is a schematic view of a structure of a variable vane pump used in a commercial vehicle power steering according to the present invention. Sectional view showing the minimum flow rate at high speed.

2 and 3, the variable vane pump 1000 according to the present invention is a variable vane pump used for power steering of a commercial vehicle. The variable vane pump 1000 is connected to the drive shaft 300 through a spline, A cylinder 400 formed to surround the outer circumference of the rotor 200 so as to be eccentric with respect to the circumference of the cylinder 200; A pinion gear 800 formed to maintain eccentricity; And a relief valve 870 connected to the pinion gear 800.

The variable vane pump 1000 according to the present invention further includes a roller bearing 840 for controlling the amount of eccentricity of the cylinder 400 between the one side of the outer circumferential surface of the cylinder ring 400 and the pinion gear 800 .

The variable vane pump according to the present invention has a concave jaw in a region spaced apart from the roller bearing 840 formed in the cylinder ring 400 by a predetermined distance, And a fixing pin 850 that does not exceed the radius of rotation of the fixing pin 850.

The rotor 200 is fixed to the drive shaft 300 and the circular cylinder 400 is installed eccentrically on the outer side of the rotor 200. [ In order to maintain the eccentricity, a pinion gear 800 is disposed on one side of the outer circumferential surface of the cylinder ring 400 so as to maintain the eccentricity, and the pinion gear 800 is connected to the relief valve 870.

In the variable vane pump 1000 according to the present invention, the relief valve 870 includes a relief valve 870, which is hollow when the inside thereof is hollow and one side is opened, And a second elastic member 874 which is inserted into the recessed portion and which has a recessed portion on one side thereof, A bushing 875 supporting the second elastic member 874 and having a concave portion on the opposite side of the second elastic member 874 and a relief valve ball 873 partially inserted into the recess of the bushing 875, A second cap 872 covering the concave portion formed on one side of the gear gear 700 so that the relief valve ball 873 is not separated from the bushing 875 and the second cap 872, A first elastic member 871 for supporting the first elastic member 871 and a second elastic member 871 for supporting the first elastic member 871, A second pressure chamber P2 is formed between the first cap 880 and one side of the gear gear 700 inserted in the space, and a first cap 880 covering one side of the space so as not to be detached And the first pressure chamber P1 is formed on the other side of the ring gear 700 in the space.

The variable vane pump according to the present invention further includes a suction port 500 through which the oil is sucked, a suction path 510 through which the sucked oil flows through the suction port 500, And a discharge port 600 through which the oil moved through the discharge flow path 610 is discharged.

The pinion gear 800 has a low speed region 830 and a low speed region 830. The low speed region 830 has a highest peak point at a predetermined position on the opposite side of the region where the pinion gear 810 is formed, The right side oblique portion 820 has a certain angle to the right side of the right side oblique portion 820, and one region of the right side oblique portion 820 is the high speed region.

That is, a first pressure chamber P1 in which the oil discharged from the pump directly acts is formed in one side of the relief valve 870 which is inserted into one side in a space in which the inside is hollow and one side is opened, And a second pressure chamber P2 through which the oil passed through the orifice pipe 860 is applied.

More specifically, when the rotor 200 fixed to the drive shaft 300 rotates, a plurality of vanes 100 inserted into the vane groove protrude to the outside due to the centrifugal force and pressurized on the inner surface of the cylinder ring 400 And is rotated with a sliding friction force. A roller bearing 840 for controlling the amount of eccentricity of the cylinder 400 is installed between the pinion gear 800 and one side of the outer circumferential surface of the cylinder ring 400 so as to be able to rotate with a sliding friction force. A pinion gear 800 is disposed on one side of the outer circumferential surface of the cylinder ring 400 so as to be eccentric with respect to the rotor 200 so that the eccentricity can be formed between the cylinder ring 400 and the rotor 200. The pinion gear 800 includes a relief valve 870).

The structure of the relief valve 870 is as follows. The geargear 700 has a gear gear 710 connected to the pinion gear 810 of the pinion gear 800 in a predetermined area on the upper surface thereof and has a concave portion on one side. A second elastic member 874 is inserted into the recess and the bushing 875 supports the second elastic member 874 and has a recess on the opposite side of the second elastic member 874. A part of the relief valve ball 873 is inserted into the recess of the bushing 875 and the second elastic member 874 and the bushing 875 and the relief valve ball 873 are separated, The second cap 872 formed on one side of the recessed portion covers the concave portion. The first elastic member 871 supports the second cap 872 and the first cap 880 supports the first elastic member 871 and the first elastic member 871 and the first elastic member 871, 871) covers one side of the space so as not to be separated from the space.

A second pressure chamber P2 is formed between one side of the regulator 700 inserted in the space and the first cap 880 and a second pressure chamber P2 is formed on the other side of the regulator 700 in the space. P1 are formed.

In the variable vane pump 1000 according to the present invention, as the oil in the first pressure chamber P1 increases during high-speed rotation of the engine of the vehicle, the increased oil is generated by the to- The frictional resistance pressure of the first pressure chamber P1 is greater than the tension of the first elastic member 871 so that the gear gear 700 moves in the direction of the second pressure chamber P2. When the ring gear 700 is moved in the direction of the second pressure chamber P2, the pinion gear 800 is driven in the counterclockwise direction and is positioned in the high speed region.

Further, when the engine of the vehicle is rotating at low speed, the oil in the first pressure chamber P1 is reduced, and the reduced oil is discharged to the discharge port 600 through the frictional resistance pressure of the first pressure chamber P1 Becomes smaller than the tension of the first elastic member 871, the ring gear 700 moves in the direction of the first pressure chamber P1. When the ring gear 700 is moved in the direction of the first pressure chamber P1, the pinion gear 800 is driven in the clockwise direction to be positioned in the low speed region 831. [

4 is a front sectional view showing a case where the variable vane pump for an automatic transmission according to the present invention is low speed, FIG. 5 is a front sectional view showing a case where the variable vane pump for an automatic transmission according to the present invention is medium speed, Sectional view illustrating a case where the variable vane pump for an automatic transmission according to the present invention is at a high speed.

4 to 6 are used for a variable vane pump for an automatic transmission and the variable vane pump for an automatic transmission is almost the same in structure as the variable vane pump used in the commercial vehicle power steering described above with reference to Figs. 2 and 3, The role of the pinion gear 800 is slightly different.

4 to 6, the variable vane pump 1000 according to the present invention is configured such that when seen from the front, the pinion gear 800 is positioned at a predetermined position in a region opposite to the region where the pinion gear 810 is formed And the left side of the middle speed range 830 is defined as a low speed range 831 and a middle speed range 830. The middle speed range 830 has a peak point having the highest peak in the middle speed range 830, (830) has a high speed area (832).

First, the variable vane pump 1000 according to the present invention shown in Fig. 4 is a case where the engine of the vehicle is rotating at low speed. That is, when the engine of the vehicle rotates at a low speed, the oil in the first pressure chamber P1 is an intermediate flow rate, and the pinion gear 800 is located in the low speed region 831. [

In the variable vane pump 1000 according to the present invention, when the engine of the vehicle is rotated at a high speed, when the oil in the first pressure chamber P1 is increased to the maximum flow rate, the increased oil is discharged to the discharge port 600, The frictional resistance pressure of the first pressure chamber P1 generated by the first elastic member 871 becomes larger than the tension of the first elastic member 871 so that the lever gear 700 moves in the direction of the second pressure chamber P2.

On the other hand, when the engine of the vehicle is rotating at a medium speed, when the oil in the first pressure chamber P1 is reduced to a minimum flow rate, the reduced oil is discharged to the discharge port 600 through the first pressure chamber P1 The frictional resistance pressure becomes smaller than the tension of the first elastic member 871, so that the geargear 700 moves in the direction of the first pressure chamber P1.

In more detail, the variable vane pump 1000 according to the present invention includes a drive shaft 300 installed at the center of the housing and a rotor 200 coupled to the drive shaft 300. The rotor 200 forms a plurality of vane grooves, and a vane 100 is installed in the vane groove. A cylinder ring 400 is provided outside the rotor 200 and a roller bearing 840 is installed to allow the cylinder ring 400 to rotate and control the amount of eccentricity.

When the rotor 200 rotates and the vane 100 inserted in the vane groove rotates and slides along the inner surface of the cylinder ring 400 in the outer circumferential direction due to the centrifugal force, 400) is eccentric, one side forming a large arc, and the other side forming a small arc. A suction flow path 510 is formed between the circle and the arc, and a discharge flow path 610 is formed between the arc and the arc. The suction passage 510 extends from a narrow space to a large space and is connected to an oil tank in the outside through a pipe to suck the oil. The discharge passage 610 has a reduced shape from a large space to a small space, . The discharge pressure acts on the rotor 200 and the cylinder ring 400 and the amount of eccentricity of the drive shaft 300 coupled to the rotor 200 is properly controlled by the roller bearing 840.

The ball bearing 840 is connected to a pinion gear 800 formed to maintain eccentricity, and the pinion gear 800 is connected to a relief valve 870.

The oil discharged from the discharge passage 610 flows into the first pressure chamber P1. As the oil in the first pressure chamber P1 increases when the engine of the vehicle rotates at a high speed, the increased oil causes a frictional resistance pressure of the first pressure chamber P1 due to the to-be-released frictional resistance to the discharge port 600 The frictional resistance pressure generated in the first pressure chamber P1 is greater than the tension of the first elastic member 871 so that the lever 700 is moved in the direction of the second pressure chamber P2.

Thereafter, when the gear gear 710 moves in the direction of the second pressure chamber P2, the pinion gear 810 engaged with the gear gear 710 moves in the counterclockwise direction, The pinion gear 800 is moved to an intermediate speed region 830 having a highest peak position at a predetermined position of the region on the opposite side of the region where the pinion gear 810 is formed, that is, the region where the rotational speed is intermediate.

That is, since the pump rotates in proportion to the rotation speed of the engine, the amount of oil discharged increases, and the amount of oil increases due to frictional resistance when passing through the discharge pipe (not shown). When this pressure is generated, a pressure difference is generated in the first pressure chamber P1 and the second pressure chamber P2, and the regex valve 710 of the relief valve 870 moves in the direction of the second pressure chamber P2 .

On the contrary, when the engine is rotated at a medium speed, the oil in the first pressure chamber P1 is reduced to the minimum flow rate, so that the reduced oil flows to the discharge port 600 through the friction resistance of the first pressure chamber P1 As the pressure becomes smaller than the tension of the first elastic member 871, the gear gear 700 moves in the direction of the first pressure chamber P1.

Thereafter, when the gear gear 710 moves in the direction of the first pressure chamber P1, the pinion gear 810 engaged with the gear gear 710 moves clockwise, and when seen from the front, A high speed region 832 which is a side having a certain angle of view toward the right side of the medium speed region 830 having a highest peak point at a predetermined position in the region opposite to the region where the gear teeth 810 is formed, The pinion gear 800 is moved to the in-plane area.

That is, when the amount of oil to be discharged is reduced, the amount of oil that is reduced is reduced when the oil passes through the discharge pipe (not shown). When such pressure is generated, the first pressure chamber P1 and the second pressure chamber A pressure difference is generated in the pressure chamber P2 and the regulator 710 of the relief valve 870 is moved in the direction of the first pressure chamber P1.

Thereby, the capacity of the pump is varied to reduce the frictional heat of the oil and reduce the power for driving the pump.

When the engine is rotated at a high speed by this movement, the eccentric amount is further reduced. Particularly, when the set pressure is reached, the oil in the second pressure chamber P2 is returned to the suction passage 510.

In other words, a space that is enlarged in a narrow space between the eccentrically installed cylinder 400 and the rotor 200 becomes the suction passage 510, and sucks the oil through the suction port 500. The space that becomes smaller in the large space becomes the discharge flow path 610 and discharges the oil to the first pressure chamber P1.

When the oil in the first pressure chamber P1 begins to fill, the oil is discharged to the discharge port 600 through the primary channel 620 and the secondary channel 630. [ A frictional pressure is generated when the oil passes through the primary conduit 620 and the secondary conduit 630. When the frictional pressure is higher than the tension of the first elastic member 871, 2 Move in the pressure chamber (P2) direction.

When the lever gear 710 moves in the direction of the second pressure chamber P2 when the lever gear 700 is moved in the direction of the second pressure chamber P2, the pinion gear engaged with the lever gear 710 moves in the 810 are moved in the counterclockwise direction. When viewed from the front, the pinion gear 810 is rotated in a middle-speed range 830 having a highest peak point at a predetermined position of the area opposite to the area where the pinion gear 810 is formed 800) is moved.

The eccentric distance of the cylinder ring 400 also changes due to the movement of the pinion gear 800. That is, when the rotation speed of the pump increases to a medium speed, the amount of oil to be discharged increases, and as the friction pressure generated when the oil passes through the primary channel 620 and the secondary channel 630 increases, The eccentric distance is shortened due to the movement of the gear gear 700 and the pinion gear 800 due to the pressure difference in the second pressure chamber P2. And the amount of oil discharged is reduced.

When the oil is reduced to a minimum flow rate in the first pressure chamber P1 when the engine is rotating at a medium speed, the first pressure chamber 613, which is generated when the reduced oil passes through the primary channel 620 and the secondary channel 630, When the friction force of the first elastic member P1 becomes smaller than the tension of the first elastic member 871, the geargear 700 moves in the direction of the first pressure chamber P1.

When the lever gear 710 moves in the direction of the second pressure chamber P1 when the lever gear 700 is moved in the direction of the second pressure chamber P1, the pinion gear engaged with the lever gear 710 810 move to the right in the middle speed region 830 having the highest peak point at a predetermined position on the opposite side of the region where the pinion gear 810 is formed when viewed from the front, The pinion gear 800 is moved to the high speed region 832, i.e., the region where the rotational speed is high.

The eccentric distance of the cylinder ring 400 also changes due to the movement of the pinion gear 800. That is, when the rotation speed of the pump is increased to a low speed, the amount of oil to be discharged decreases and the friction pressure generated when the oil passes through the primary channel 620 and the secondary channel 630 decreases, The eccentric distance is increased due to the movement of the gears 700 and the pinion gear 800 due to the pressure difference in the second pressure chamber P2. And the amount of oil to be discharged is increased.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Vane
200: Rotor
300: drive shaft
400: Cylinder ring
500: inlet
510:
600: outlet
610:
700:
710: Rex Gear
800: Pinion gear
810: Pinion gear
820: Right slope
830: High speed area
840: Roller Bearings
850: Fixing pin
860: Orifice tube
870: relief valve
871: first elastic member
872:
873: Relief valve ball
874: second elastic member
875: Bushing
876: Second through hole
877: First through hole
878: Third through hole
880: First cap
1000: variable vane pump

Claims (9)

A rotor 200 connected to the drive shaft 300 by a spline and having a vane 100 for linear motion along a plurality of vane grooves distributed in a circumferential direction,
A cylinder 400 formed around the outer circumference of the rotor 200 so as to be eccentric,
A pinion gear 800 formed on one side of the outer circumferential surface of the cylinder ring 400 to maintain eccentricity,
And a relief valve (870) connected to the pinion gear (800)
And a roller bearing 840 for controlling an amount of eccentricity of the cylinder ring 400 between the one side of the outer circumferential surface of the cylinder ring 400 and the pinion gear 800,
The roller bearing (840) formed in the cylinder ring (400) has a concave jaw in a spaced-apart area,
Further comprising a fixing pin (830) on the concave tine so as not to exceed a predetermined turning radius when the cylinder ring (400) is rotated. The method according to claim 1,
The relief valve 870, which is inserted into the one side of the space in which the inside is hollow and the one side is opened,
A gear gear 700 having a gear gear 710 connected to a pinion gear 810 of the pinion gear 800 and having a concave portion on a predetermined region of the upper surface,
A second elastic member 874 inserted into the recess,
A bushing 875 which supports the second elastic member 874 and has a concave portion on the opposite side of the second elastic member 874,
A relief valve ball 873 partially inserted into the recess of the bushing 875,
A second cap 872 covering the recess formed at one side of the lever gear 700 so that the bushing 875 and the relief valve ball 873 are not separated from the second elastic member 874,
A first elastic member 871 for supporting the second cap,
And a first cap 880 that supports the first elastic member 871 and covers one side of the space so that the first gear member 700 and the first elastic member 871 are not separated from the space However,
A second pressure chamber P2 is formed between the first cap 880 and one side of the lever 700 inserted in the space,
And a first pressure chamber (P1) is formed on the other side of the gear (700) in the space. delete delete 3. The method of claim 2,
An inlet 500 through which the oil is sucked,
A suction passage 510 through which the oil sucked through the suction port 500 moves,
A discharge passage 610 for allowing the remaining amount of oil to move to the first pressure chamber P1,
And a discharge port (600) through which the oil moved through the discharge passage (610) is discharged. 6. The method of claim 5,
If the oil in the first pressure chamber P1 increases when the engine of the vehicle is rotated at a high speed,
The frictional resistance pressure of the first pressure chamber P1 generated by the toothed frictional resistance to the discharge port 600 becomes greater than the tension of the first elastic member 871, Is moved in the direction of the second pressure chamber (P2). 6. The method of claim 5,
If the oil in the first pressure chamber P1 is reduced when the engine of the vehicle is rotating at low speed,
The frictional resistance pressure of the first pressure chamber P1 generated by the toque friction resistance of the oil discharged to the discharge port 600 becomes smaller than the tension of the first elastic member 871, Is moved in the direction of the first pressure chamber (P1). 8. The method of claim 7,
The pinion gear 800 has a low speed region 830 having a highest peak point at a predetermined position in a region opposite to the region where the pinion gear 810 is formed,
A right side oblique side 820 of a predetermined angle to the right side of the low speed region 830,
Wherein one region of the right oblique side (820) is a high-speed region. 8. The method of claim 7,
When viewed from the front, the pinion gear 800 includes an intermediate speed region 830 having a highest peak point at a predetermined position in a region opposite to the region where the pinion gear 810 is formed,
The left and right sides of the medium speed region 830 have a certain angle of view,
The variable vane pump has a low speed region 831 on the left side of the medium speed region 830 and a high speed region 832 on the right side of the medium speed region 830.

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