KR101678579B1 - flow control valve for transmission of vehicle - Google Patents

Abstract

The present invention relates to a flow control valve using driving of an oil pump, comprising: a valve housing having an opening formed in a plurality of directions to form a flow path; A piston rod inserted into the housing to determine opening and closing of the opening through linear movement; A connecting rod extending from the piston rod, a fixing guide for guiding the connecting shaft, a nut-type supporting portion spaced from the fixing guide and fixed to the connecting shaft, and a nut- A drive connection portion including a spring that contracts or expands by linear movement; An H-shaped weight guide fixed so as to pass through the center of the rotating plate; a weight slidably connected to both the weight guide and a release And a pump driving opening / closing control unit including a bearing and a weight blade having a weight and a hinge connected to the weight and the release bearing, respectively. The centrifugal force generated by the rotation of the rotating plate causes a hinge rotation of the weight wing And drives the linear movement of the piston rod connected to the connection shaft. This makes it possible to easily control the flow rate of the fluid such as the oil supplied by using the oil pump drive for supplying the oil or to control the direction and increase the system energy efficiency.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flow control valve for a transmission system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow control valve, and more particularly, to a flow control valve applied to an automotive transmission system that can be controlled to open and close using pump driving power.

As global oil prices and exhaust emission regulations are strengthened recently, automakers are concentrating on developing technologies that can improve fuel efficiency in an environmentally friendly way.

Improvement in fuel economy in the automatic transmission can be realized by minimizing unnecessary power consumption of the oil pump. As described above, in order to improve the fuel economy, the oil pump applied to the automatic transmission is divided into a low-pressure oil pump and a high-pressure oil pump, and the hydraulic pressure generated by the low-pressure oil pump is divided into low pressure parts (torque converter, To be supplied by

And the hydraulic pressure generated by the high-pressure oil pump is supplied to a high-pressure portion (a friction member selectively operated at the time of shifting).

That is, the automatic transmission having two oil pumps as described above is configured to generate the entire hydraulic pressure based on the low-pressure portion, and at the same time to control and supply only a part of the hydraulic pressure to a required high pressure in the high-

1 is a configuration diagram of a hydraulic pressure supply system of a conventional automatic transmission for a vehicle.

1, in the conventional hydraulic pressure supply system, the low-pressure hydraulic pressure generated by the low-pressure oil pump 2 is supplied to the low-pressure portion 4 such as the torque converter T / C, the cooling portion, the lubricating portion, Pressure oil pressure generated by the oil pump 6 for the shift can be supplied to the high-pressure portion 8 for operating the friction member related to the shift.

The hydraulic pressure generated by the low pressure oil pump 2 is controlled to a stable hydraulic pressure in the low pressure regulator valve 10 and supplied to the low pressure portion 4, and the low pressure regulator valve 10 is connected to the first solenoid SOL1 As shown in Fig.

The high-pressure oil pump 6 boosts the low-pressure oil pressure supplied from the low-pressure oil pump 2 to a high-pressure oil pressure, and the hydraulic pressure boosted by the high-pressure oil pump 6 is supplied to the high- 12, and is supplied to the high-pressure portion 8.

A first hydraulic pressure sensor S1 for detecting a hydraulic pressure is disposed on a low pressure passage 14 connecting the low pressure oil pump 2 and the low pressure regulator valve 10, A second hydraulic pressure sensor (S2) for detecting the hydraulic pressure is disposed on the high-pressure hydraulic line (16) connecting the high-pressure regulator valve (12).

Accordingly, the number of revolutions of the electric motor M, which is the driving source, can be controlled in accordance with a signal detected from the first and second hydraulic pressure sensors S1 and S2. However, in the above-described hydraulic pressure supply system, the use of the first and second hydraulic pressure sensors S1 and S2 for controlling the rotational speed of the electric motor M causes an increase in the number of components and a cost increase.

As described above, the pump and the oil passage circuit applied to the conventional automatic transmission system for a vehicle use a large number of sensors and regulator valves to form an oil supply system by separating the high pressure and the low pressure, And it is difficult to form a lightweight, compact and highly efficient system of a car.

For this reason, it is necessary to develop an improved flow control valve of a new concept in which opening and closing are controlled by the system circuit due to the characteristics of the valve itself, rather than a method of controlling the valve and pump drive through a sensor.

Korea Public Notice No. 1996-0000631 (Publication Date: January 10, 1996)

An object of the present invention to solve the above-described problems is to provide an oil pump which can control the flow rate or control the flow rate of a fluid such as oil supplied using an oil pump drive for supplying oil, simplify the circuit configuration of the system, And to provide a flow control valve capable of increasing energy efficiency.

According to an aspect of the present invention, there is provided a flow control valve comprising: a valve housing having an opening formed in a plurality of directions to form a flow path; A piston rod inserted into the housing to determine opening and closing of the opening through linear movement; A connecting shaft extending from the piston rod, a fixing guide for guiding the connecting shaft, a nut-type supporting portion spaced apart from the fixing guide and fixed to the connecting shaft, and a nut-type supporting portion provided between the fixing guide and the nut- A drive connection portion including a spring that contracts or expands by linear movement; An H-shaped weight guide fixed so as to pass through the center of the rotating plate; a weight slidably connected to both the weight guide and a release And a pump driving opening / closing control unit including a bearing and a weight blade having a weight and a hinge connected to the weight and the release bearing, respectively. The centrifugal force generated by the rotation of the rotating plate causes a hinge rotation of the weight wing And drives the linear movement of the piston rod connected to the connection shaft.
Preferably, the valve housing has a plurality of openings formed in a side surface of the cylindrical housing, and the openings are paired so as to form a flow path in a direction perpendicular to the side surface of the housing to form a plurality of openable and closable flow paths Do.
The piston rod may include a rod rod extending from the connection shaft to the inside of the housing, and an opening / closing body which is closely attached to the inside of the housing and is disposed at predetermined intervals along the rod rod.

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The present invention proposes a structure in which a valve is opened and closed by using a centrifugal force in accordance with rotation of a motor for driving an oil pump, and a flow rate of a fluid such as oil supplied by using an oil pump drive for supplying oil is easily Flow control valve that can control the flow direction of the fluid and control the direction and increase the energy efficiency of the system.

In addition, like electronic valves such as conventional solenoid valves, there is no need for a circuit and a system configuration for electronic control. By allowing the oil to be supplied to other systems by bypassing fluid such as oil according to the driving state of the pump, And provides high quality flow control valves with high system availability.

1 is a configuration diagram of a hydraulic pressure supply system of a conventional automatic transmission for a vehicle,
FIG. 2 is a schematic view showing a structure and a structure of a flow control valve using an oil pump according to an embodiment of the present invention.
3 is a perspective view showing a pump drive opening / closing control part and a drive connection part applied to a flow control valve using an oil pump according to an embodiment of the present invention,
FIG. 4 is a schematic view showing an open / close structure of a flow control valve using driving of an oil pump according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish it, will be described with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. The embodiments are provided so that those skilled in the art can easily carry out the technical idea of the present invention to those skilled in the art.

In the drawings, embodiments of the present invention are not limited to the specific forms shown and are exaggerated for clarity. Also, the same reference numerals denote the same components throughout the specification.

The expression "and / or" is used herein to mean including at least one of the elements listed before and after. Also, singular forms include plural forms unless the context clearly dictates otherwise. Also, components, steps, operations and elements referred to in the specification as " comprises "or" comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

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

2 is a schematic view showing the structure and structure of a flow control valve using the driving of an oil pump according to an embodiment of the present invention. 3 is a perspective view showing a pump drive opening / closing control part 300 and a drive connection part 200 applied to a flow control valve using an oil pump according to an embodiment of the present invention.

As shown in FIGS. 2 and 3, the flow control valve using the driving of the oil pump according to the embodiment of the present invention includes: a valve housing 100 having an opening 110 formed in a plurality of directions to form a flow path; A piston rod 150 inserted into the housing 100 to determine opening and closing of the opening 110 through a linear movement; A connecting shaft 210 extending from the piston rod 150, a fixing guide 230 for guiding the connecting shaft 210, a nut-shaped supporting part 230 spaced from the fixing guide 230 and fixed to the connecting shaft, (240), and a spring (250) installed between the fixed guide and the nut-shaped support to shrink or expand by linear movement of the connection shaft. A weight plate 330 slidably connected to both the weight guide 310 and the weight guide 330; And a pump driving opening and closing control part 300 including a release bearing 350 installed outside the end of the connection shaft and a weight blade 340 hinged to the release bearing and the weight bearing on both sides, The hinge rotation of the weight blade (340) is caused by the centrifugal force resulting from the rotation of the rotation plate, thereby driving the linear movement of the piston rod connected to the connection shaft.

As described above, the embodiment of the present invention proposes a flow control valve which is connected to the shaft of an oil pump drive motor applied to a transmission system of an automobile or the like and can be opened or closed according to the driving state of the oil pump, It is possible to bypass the fluid such as oil according to the driving state of the pump and to supply the oil to the other system. Therefore, it is possible to provide a high-quality flow control Provide the valve.

The embodiment of the present invention proposes a structure in which a valve is opened and closed by using a centrifugal force in accordance with the rotation driving of a motor for driving an oil pump. Instead of using a new part and system for controlling and opening the valve, It is possible to increase the energy efficiency by proposing a flow control valve capable of controlling the flow rate or controlling the flow rate of the fluid such as oil supplied using the oil pump drive for supplying the oil.

2, the flow control valve according to the embodiment of the present invention includes a valve housing 100, a piston rod 150, a drive connection portion 200, And a pump driving opening / closing control unit 300 connected to the motor and rotated.

The valve housing 100 is formed with a plurality of openings 110 passing through the inside and outside of the valve housing 100 and is formed as a pair so that fluid such as oil can pass through. A piston rod 150 is inserted into the valve housing 100 to open and close the opening 110 and to control the direction and flow rate of the fluid to form a structure capable of opening and closing the opening 110 through linear movement do.

The piston rod 150 includes a rod rod 153 extending from the connecting shaft 210 to the inside of the housing and a rod rod 153 disposed at a predetermined interval along the rod rod 153, The rod rod 153 is connected to the external oil pump drive motor shaft to perform linear drive according to the pump drive and is connected to the rod rod 153 by a predetermined And the opening / closing bodies 155, which are spaced apart from each other and closely contact the valve housing 100, move and open the opening.

The driving connection part 200 is contracted or expanded by linear movement of the connection shaft 210 connected to the piston rod 150 in accordance with the rotation of the rotation plate 305 connected to the driving motor shaft of the oil pump A spring 250 is formed. The rotation plate 305 connected to the pump driving motor shaft rotates and is spaced apart from the rotation plate 305 so that the centrifugal force generated by rotation of the rotation plate 305 So that the driving connection part 200 is pulled to drive the linear movement.

The pump driving opening and closing control unit 300 is hinged to the drive connection unit 200 and the rotation plate 305 to be rotatable in a direction perpendicular to the rotation direction of the rotation plate 305, And a weight 330 connected to the weight 330. However, such a weight 330 performs only a linear movement in accordance with the rotation of the rotation plate 305. This is because the weight 330 having a specific mass or weight as the rotation plate 305 rotates has a moment of inertia The centrifugal force is induced and the force is received in both outward directions.

When the weight 330 moves to the outer periphery of the rotation plate 305, the weight 330 and the weight blade 340 hinged to the connection shaft 210 are moved in the direction perpendicular to the rotation direction of the rotation plate 305 So that the valve is opened and closed.

3, the pump driving opening / closing control part 300 includes an H-shaped weight guide 310 fixed to pass through the center of the pivot plate 305, a weight 330 slidingly connected to both sides of the weight guide, A release bearing 350 installed outside the end of the connection shaft 210 and a weight blade 340 hinged to both of the release bearings 350 and the both weights 330.

The H-shaped weight guide 310 is disposed at a center of the pivot plate 305 in the circumferential direction of the valve housing 100. The pivot plate 305 is a circular plate having a plurality of through- And is fixed to the inner surface of both ring-shaped peripheries.

The H-shaped weight guide 310 is a frame composed of a vertical bar on both sides and a horizontal bar connecting the vertical bar to the center, and a weight 330 having a predetermined weight is slidingly connected between the vertical bars. A weight 330 is slidably installed inside the vertical bar of the H-shaped weight guide 310 and inserted into the end of the connecting shaft 210 spaced apart from the center of the H-shaped weight guide 310 The release bearing 350 and the weight 330 are hingedly connected to the weight wings 340 on both sides.

 Since the release bearing 350 is hinged to the H-shaped weight guide 310, a number of bearings are provided inside the release bearing 350 so that the release bearing 350 can be rotated with respect to the connection shaft 210 together with the rotation of the rotation plate 305 Ring bearing structure.

1, when the pivot plate 305 connected to the motor drive shaft of the oil pump rotates, the weight of the weight plate 310 slidingly coupled to the H-shaped weight guide 310 The weight plate 330 is linearly moved to both sides and the weight plate 340 is opened on both sides in accordance with the linear movement of the weight 330. The connecting shaft 210 connected to the release bearing 350 is rotated by the rotation plate And the piston rod 150 connected to the connecting shaft 210 is linearly moved to close the valve opening.

The driving connection part 200 includes a connection shaft 210 extending to the piston rod 150 and a fixing guide 230 for guiding the connection shaft 210 adjacent to the release bearing 350, A nut type support part 240 spaced apart from the fixing guide 230 and fixed to the connection shaft 210 and a spring 250 installed between the fixing guide 230 and the nut type support part 240 for contraction or expansion ).

As described above, the connection shaft 210 is pulled by the centrifugal force due to the rotation of the driving motor of the oil pump to close the valve. When the pump stops driving, The nut-shaped supporter 240 is pushed away from the pivot plate 305 to open the valve again.

That is, the connection shaft 210 is pulled toward the rotation plate 305 by centrifugal force resulting from the rotation of the rotation plate 305 connected to the oil pump drive motor, and inserted into the valve housing 100 connected to the connection shaft 210 And the piston rod 150 is linearly moved to determine the opening and closing of the flow control valve.

The structure of the flow control valve according to the embodiment of the present invention controls the opening and closing of the valve by using the oil pump rotary drive energy, so that a separate control system for the valve is not required, There is a great advantage that a simple valve circuit can be constructed in that the flow of fluid such as oil can be changed by driving.

FIG. 4 is a schematic view showing an open / close structure of a flow control valve using driving of an oil pump according to an embodiment of the present invention. 4 (a) shows that when the motor of the pump stops, upper and lower end openings of the valve housing 100 are opened to form a passage through which oil or fluid can move, and when the motor of the pump is driven, The piston rod 150 is pulled to the right to close the opening at the lower end to close the valve.

4 (b) is different from FIG. 4 (a) in that, according to the stop and operation of the motor drive, not one valve is opened and closed but a passage is formed through a plurality of openings paired at the upper and lower ends, A plurality of opening and closing bodies 155 are formed on the rod 150 to open and close the upper and lower openings in accordance with the rotational speed of the pump driving motor so as to be able to open and close according to a specific rotational speed of the pump driving motor Structure.

As described above, the embodiment of the present invention proposes a structure in which the opening of the valve is opened and closed by the centrifugal force according to the driving of the pump, so that the valve circuit can be constructed by various methods, The flow control valve having a unique structure capable of controlling the direction of the fluid in a plurality of directions is provided.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100: valve housing, 150: piston rod, 200: drive connection,
210: connecting shaft, 250: spring, 300: pump driving opening / closing control part,
305: rotation plate, 330: weight, 350: release bearing,

Claims (6)

In the flow control valve,
A valve housing having an opening formed in a plurality of directions to form a flow path;
A piston rod inserted into the housing to determine opening and closing of the opening through linear movement;
A connecting shaft extending from the piston rod, a fixing guide for guiding the connecting shaft, a nut-type supporting portion spaced apart from the fixing guide and fixed to the connecting shaft, and a nut-type supporting portion provided between the fixing guide and the nut- A drive connection portion including a spring that contracts or expands by linear movement; And
An H type weight guide fixed so as to pass through the center of the rotating plate; a weight slidably connected to both the weight guide and a release bearing installed outside the end of the connecting shaft; And a pump driving open / close control unit including a weight blade to which the release bearing and the weight are hingedly connected at both ends,
Wherein the hinge rotation of the weight blade is caused by a centrifugal force resulting from the rotation of the rotation plate, thereby driving the linear movement of the piston rod connected to the connection shaft.
The method according to claim 1,
The valve housing includes a cylindrical housing having a plurality of openings formed in a side surface thereof,
Wherein the openings are paired so as to form a flow path in a direction perpendicular to a side surface of the housing to form a plurality of openable and closable flow paths.
3. The method of claim 2,
The piston rod
A rod rod extending from the connection shaft into the housing,
And an opening / closing body that is closely attached to the inside of the housing and is disposed at predetermined intervals along the rod rod.
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