WO2010067946A1

WO2010067946A1 - Vane pump apparatus

Info

Publication number: WO2010067946A1
Application number: PCT/KR2009/005286
Authority: WO
Inventors: 박현우
Original assignee: 주식회사 신우
Priority date: 2008-12-08
Filing date: 2009-09-17
Publication date: 2010-06-17
Also published as: CN102016318A; BRPI0913788A2; DE112009002029T5; KR100914241B1; US20110223050A1

Abstract

Disclosed is a vane pump apparatus. The disclosed vane pump apparatus comprises: a housing having an outlet channel; a reservoir tank which stores working oil and which is coupled to the housing; and a vane pump installed inside the reservoir tank to discharge the compressed working oil to the outlet channel.

Description

Vane Pump Device

The present invention relates to a vane pump apparatus, and more particularly, to a vane pump apparatus for installing a vane pump inside the reservoir tank to prevent an increase in the production cost of the vane pump.

In general, a vane pump is used to supply hydraulic pressure in a device using hydraulic pressure including an automobile.

The main body of the vane pump is provided with a cam ring, a rotor and a vane, and the rotor rotates by being coupled to a shaft rotated by a driving device.

The fluid is sucked and compressed by the rotating action of the rotor and the vane and then sent to the hydraulic line.

The reservoir tank for supplying the hydraulic oil to the vane pump is installed separately from the vane pump and connected by a connecting pipe, and the reservoir tank for supplying the hydraulic oil is mounted on the vane pump.

The above-described invention means a background of the technical field to which the present invention belongs, and does not mean the prior art.

Since the conventional vane pump is exposed to all or part of the outside air, it is necessary to install a sealing member made of rubber to prevent oil from leaking to the outside of the vane pump and to inspect the oil leakage to the outside of the sealing member and the vane pump body. As it is added, the production cost increases. Therefore, there is a need for improvement.

The present invention was created by the necessity as described above, the production cost is increased by the installation of the sealing member to prevent the leakage of oil to the outside of the vane pump, thereby increasing the assembly work and the addition of inspection work related to oil leakage Can prevent The purpose is to provide a vane pump device.

The vane pump apparatus according to the present invention includes: a housing having a discharge passage, a reservoir tank in which hydraulic oil is stored and coupled to the housing, and a vane pump installed inside the reservoir tank to discharge the hydraulic oil compressed in the discharge passage.

In addition, the housing is preferably a side wall body or an electric motor housing.

In addition, it is preferable that a sealing ring is provided between the housing and the reservoir tank to prevent leakage.

In addition, it is preferable that the front of the vane pump is provided with a suction port for sucking hydraulic oil and a discharge port communicating with the discharge passage.

In addition, it is preferable that the periphery of the suction port in the vane pump is separated from the housing to form a suction connection passage.

In addition, the vane pump is preferably formed integrally with the valve housing to which the relief valve is mounted.

Since the vane pumping station according to the present invention installs the vane pump inside the reservoir tank in which the working oil is stored so that there is no problem even when the vane pump is leaked to the outside of the vane pump, it is possible to delete the sealing member, thereby reducing the production cost by reducing inspection work and parts can do.

1 is an exploded perspective view schematically showing a vane pump apparatus according to an embodiment of the present invention.

2 is a view illustrating the inlet and outlet of the vane pump shown in FIG.

3 is a view showing a state in which the vane pump device shown in FIG.

4 is a side cross-sectional view of the vane pump device shown in FIG. 3 in the A-A direction.

FIG. 5 is a side cross-sectional view of the vane pump device shown in FIG. 3 in the B-B direction. FIG.

FIG. 6 is a cross-sectional view of the vane pump device illustrated in FIG. 4 in the C-C direction.

FIG. 7 is a front view illustrating the front body by cutting the vane pump device shown in FIG. 4 in the D-D direction.

8 is a front view illustrating the side plate by cutting the vane pump device shown in FIG. 4 in the E-E direction.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the vane pump apparatus according to the present invention. For convenience of explanation, a vane pump device that compresses the hydraulic fluid by the rotation of the vane will be described as an example. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is an exploded perspective view schematically showing a vane pump device according to an embodiment of the present invention, Figure 2 is a view showing the inlet and outlet of the vane pump shown in Figure 1, Figure 3 is shown in Figure 1 FIG. 4 is a side cross-sectional view of the vane pump device shown in FIG. 3 in the AA direction, and FIG. 5 is the vane pump device shown in FIG. 3 in the BB direction. 6 is a cross-sectional view of the vane pump device shown in FIG. 4 in the CC direction, and FIG. 7 is a front view showing the front body of the vane pump device shown in FIG. 4 in the DD direction. 8 is a front view showing the side plate by cutting the vane pump device shown in FIG. 4 in the EE direction.

As shown in Figures 1 to 3, the vane pump device according to an embodiment of the present invention, the housing 70 having a discharge passage 74, the hydraulic oil 90 is stored in the housing 70 Included is a reservoir tank (1) coupled to the reservoir tank (1) and includes a vane pump (10) for discharging the hydraulic oil (90) compressed through the discharge passage (74).

The housing 70 according to an embodiment of the present invention may be used as a fixed side wall body or an electric motor housing, in addition to the various members within the technical concept for storing the hydraulic oil 90 is coupled to the reservoir tank (1) Can be used as the housing 70.

As shown in FIG. 4, the housing 70 is connected to the discharge port 84 of the vane pump 10 and connected to the discharge passage 74 and the discharge passage 74 to receive the compressed hydraulic oil 90. A hydraulic supply hole 72 for supplying the hydraulic oil 90 to the line is provided.

As shown in FIG. 1, a coupling hole 77 and a vane pump 10 to which the fastening bolt 18 of the vane pump 10 is coupled to a coupling surface of the housing 70 coupled to the vane pump 10. A discharge passage 74 connected to the discharge port 84 is provided.

In addition, the housing 70 is provided with a shaft connection hole 76 and the shaft 80 of the vane pump 10 coupled with the housing 70 is inserted. The shaft 80 may be driven by an electric motor that is fixed to the side wall through the shaft connection hole 76 or the shaft 80 may be directly connected to the electric motor.

The shaft 80 according to an embodiment of the present invention may be connected to another power source in addition to the electric motor to receive the rotational power.

The reservoir tank 1 coupled to the housing 70 to form a space for storing the hydraulic oil 90 therein may be deformed into various shapes including a cylindrical shape.

One side of the reservoir tank (1) is provided with a connecting pipe (3) is a passage for receiving the hydraulic oil 90 from the outside.

A sealing ring 79 is provided between the housing 70 and the reservoir tank 1 to prevent leakage, and preferably, a mounting groove is provided on an outer side of the housing 70 in contact with the side surface of the reservoir tank 1. The mounting groove is mounted with a sealing ring 79 made of an elastic material.

A thread is formed on the joint surface of the housing 70 and the reservoir tank 1, and the fastening may be performed. In addition, the housing 70 and the reservoir tank 1 may be fastened or fixed by various methods.

As shown in FIGS. 1, 2, and 6, the vane pump 10 includes a cam ring 50 having an inner surface of a large arc portion and an inner surface of a small arc portion, and is provided inside the cam ring 50. The rotor 14 includes a guide groove radially, and a plurality of vanes 34 inserted into the guide groove and moved along the inner surface of the cam ring 50.

The vane pump 10 is divided into the front body 60 and the rear cover 12 to form an outer shape, and the front body 60 and the rear cover 12 are coupled by the fastening bolt 18.

Since the vane pump 10 is installed in the hydraulic oil 90, a separate sealing member is not installed between the front cover and the rear cover 12.

As shown in Figure 4 and 5, the upper side of the front body 60, the cam ring 50 is provided with the rotor 14 is installed on the inner side, the upper side of the cam ring 50 and the rotor 14 side The plate 40, the leaf spring 32 and the rear cover 12 are sequentially stacked.

As shown in FIG. 2, the front body 60 constituting the front surface of the vane pump 10 includes a suction port 82 for sucking the hydraulic oil 90 and a hydraulic fluid 90 that is in communication with the discharge passage 74. A discharge port 84 for discharging) is provided.

A jaw is formed around the outlet port 84 so that the compressed hydraulic oil 90 is delivered while the outlet port 84 communicates with the discharge passage 74, and is fixed in contact with the housing 70.

In addition, since the periphery of the suction port 82 in the vane pump 10 does not have a jaw or a protruding portion formed at an edge so as to be spaced apart from the housing 70, the suction oil passage 88 is formed, so that the hydraulic oil inside the reservoir tank 1 is provided. 90 is easily introduced into the suction port 82 of the vane pump 10 through the suction connection passage (88).

The shaft 80, which is connected to the power source and rotates, is axially connected to the rotor 14, so that the rotor 14 and the vanes 34 rotate according to the rotation of the shaft 80.

As shown in Figure 6, the cam ring 50 is formed in a ring shape and the inner surface is formed with an elliptical cylindrical surface having two small arc portions and a large arc portion on the orthogonal axis, respectively.

The inner surface of the cam ring 50 forming the small arc portion has a shape in contact with an arc of a smaller diameter than the inner surface of the cam ring 50 forming the large arc portion.

The cam ring 50 is formed with a suction communication hole 52 in communication with the suction port 82 of the front body 60 and a discharge communication hole 54 in communication with the discharge port 84.

A discharge conduit 86 is provided between the cam ring 50 and the rear cover 12 to form a conduit for flowing the fluid in the pressure chamber 30 to the outlet 84.

As illustrated in FIG. 7, two

first discharge grooves

65 and 65 ′ are formed on the inner surface of the front body 60 facing the rotor 14, and the first discharge on one side thereof is formed. The outlet port 84 is connected to the groove portion 65 '.

First suction grooves

66 and 66 ′ connected to the suction port 82 are also formed inside the front body 60 to supply hydraulic oil 90 to the vane pump 10.

As shown in FIG. 8, the

second discharge grooves

42 and 42 ′ and the

second suction grooves

43 and 43 ′ are provided at one side of the side plate 40 facing the rotor 14.

The second discharge groove 42 of the side plate 40 is provided with a connection hole 44 so that a part of the discharged fluid is moved to the pressure chamber 30.

The leaf spring 32 is installed between the side plate 40 and the rear cover 12 to secure the space of the pressure chamber 30, and by the elastic force of the leaf spring 32, the front body 60, the cam ring ( 50), the side plate 40 is in close contact.

The back cover 12 of the vane pump 10 is integrally formed with a pipe-shaped valve housing 16, and a relief valve 20 is integrally installed inside the valve housing 16.

The relief valve 20 communicates with the pressure chamber 30 to which the fluid compressed by the vanes 34 is supplied to maintain the hydraulic pressure at a prescribed value.

The relief valve 20 includes a valve seat 22 press-fitted to the rear side of the rear cover 12, a ball member 24 for shielding the fluid compressed by the rotation of the vanes 34, and a ball member. Retainer 26 holding the 24, the valve spring 27 for pressing the ball member 24 and the adjustment screw 28 for adjusting the pressing force of the valve spring (27).

The adjusting screw 28 is provided with a discharge hole, and the fluid discharged from the relief valve 20 is discharged through the discharge hole and mixed with the hydraulic oil 90 inside the reservoir tank 1.

The fixing bolt 19 inserted into the front body 60 through the rear cover 12 prevents the rotation of the side plate 40 and the cam ring 50.

The rotor 14, the side plate 40, the plate spring 32, and the rear cover 12, in which the cam ring 50 and the vane 34 are mounted on the front body 60, are sequentially coupled to one embodiment of the present invention. The vane pump 10 according to the example is configured, but in addition, other mechanical devices installed in the reservoir tank 1 to compress the hydraulic oil 90 may be used as the vane pump 10 according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating state of the vane pump apparatus according to an embodiment of the present invention.

Since the fastening bolt 18 provided in the vane pump 10 is coupled to the fastening hole 77 of the housing 70, the vane pump 10 is coupled to the housing 70.

At this time, the outlet 84 of the vane pump 10 is fixed in communication with the discharge passage 74 of the housing 70, the inlet 82 of the vane pump 10 is spaced apart from the housing 70 The hydraulic oil 90 inside the tank 1 is easily introduced into the suction port 82.

When rotational power is transmitted to the shaft 80 through the shaft connection hole 76, the rotor 14 rotates inside the cam ring 50 by the rotation of the shaft 80.

The hydraulic oil 90 stored inside the reservoir tank 1 flows into the suction port 82 of the front body 60 through the suction connection passage 88 to form

first suction grooves

66 and 66` of the front body 60. And supply to the suction section S of the rotor 14 through the

second suction grooves

43 and 43` of the side plate 40 through the suction communication hole 52 of the cam ring 50.

As the rotor 14 rotates in the counterclockwise direction (see FIG. 6), the hydraulic oil 90 introduced into the suction section S is compressed and discharged through the discharge section D. FIG.

In detail, the compressed hydraulic oil 90 in the first discharge groove 65 ′ and the second discharge groove 42 ′ communicating with the discharge port 84 is directly discharged through the discharge communication hole 54. To be discharged.

The hydraulic fluid 90 in the first discharge groove 65 and the second discharge groove 42 which is not in direct communication with the outlet 84 is moved to the pressure chamber 30 through the connection hole 44 and then the cam ring 50. ) And the discharge port 84 along the discharge pipe 86 provided between the rear cover (12).

The hydraulic oil 90 transferred to the discharge passage 74 along the discharge port 84 is transferred to the hydraulic line through the hydraulic supply hole 72.

According to the configuration as described above, in the present invention, by installing the vane pump 10 inside the reservoir tank 1, the sealing member for preventing oil leakage of the vane pump 10 is eliminated, the vane pump 10 Downsizing and weight reduction are realized.

In addition, it is not necessary to inspect the oil leak of the vane pump 10, and thus the inspection process is simplified, thereby improving workability and reducing production cost.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

Claims

A housing having a discharge passage;

A reservoir tank in which hydraulic fluid is stored and coupled to the housing; And

A vane pump installed inside the reservoir tank to discharge the hydraulic oil compressed in the discharge passage;

A front surface of the vane pump is provided with a suction port for sucking the hydraulic oil and a discharge port communicating with the discharge passage,

The vane pump apparatus, characterized in that the periphery of the suction port is spaced apart from the housing to form a suction connection passage.
The method of claim 1,

And the housing is a side wall body or an electric motor housing.
The method of claim 1,

A vane pump device, characterized in that the sealing ring is provided between the housing and the reservoir tank to prevent leakage.
The method of claim 1,

The vane pump device, characterized in that the vane pump is integrally formed with a valve housing to which the relief valve is mounted.