KR20040016634A - Proportional control valve emphasis adjusting device of damping force variableness damper - Google Patents

Abstract

PURPOSE: A device for adjusting the middle point of a proportional control valve of a damping force-variable damper is provided to automatically find the position of the middle point of a setscrew, in assembling the proportional control valve of the damping force-variable damper and to test articles at the middle point position. CONSTITUTION: In a device for adjusting the middle point of a proportional control valve of a damping force-variable damper(20), an upper plate(32) and a lower plate(34) are supported by a post and an oil supply block(40) with a passage for supplying oil to each port of the proportional control valve to which a setscrew is temporarily fastened. A booster(44) for supplying oil is connected to the oil supply block. A clamping unit(50) for clamping the proportional control valve is installed on the oil supply block. A driving unit(60) is installed to the upper plate, to adjust the middle point of a spool mounted inside the proportional control valve by rotating the temporarily fastened setscrew. A control unit(70) is installed to control the rotation of the driving unit by measuring the pressure of each port of the proportional control valve.

Description

PROPIONIONAL CONTROL VALVE EMPHASIS ADJUSTING DEVICE OF DAMPING FORCE VARIABLENESS DAMPER}

The present invention relates to a proportional control valve of a variable damper of a semi-active sage device, and more particularly, to an apparatus capable of automatically adjusting the midpoint position of a spool in a proportional control valve.

In general, the damping force of the suspension system must properly control the damping force in relation to the relative motion of the vehicle body and the wheels. However, since the wheel movement requires a fast response of 10 Hz or more, the mechanical valve mechanism inside the shock absorber enables quick damping force change due to the relative movement of the vehicle body and the wheel, and the compression and rebound of the shock absorber. The damping force continuous variable damper has been developed as a semi-active suspension that can separately control the damping force characteristics during the stroke.

The damping force continuous variable damper is divided into a normal continuous variable damper and a reverse type continuous variable damper according to the variable damping force. The normal continuous variable damper generates a large damping force in both the tension stroke and the compression stroke, or generates a small damping force. The reverse continuous variable damper produces a small damping force in the tension stroke and a large damping force in the compression stroke. It gives a large damping force in the stroke and a small damping force in the compression stroke.

Meanwhile, when assembling the proportional control valve, it is necessary to find and assemble the midpoint position so that the spool in the proportional control valve is located at the center, but it has been difficult to find the midpoint position. In other words, the set screw connected to the spool is fastened with a predetermined number of turns, and then connected to the X (current) -Y (pressure) recorder to draw the current vs. pressure value. After confirming that the upper and lower limits were reached, the product was removed from the jig and the set screw was tightened or loosened to draw the current vs. pressure value again to check the value.

However, this conventional proportional control valve assembly method takes a lot of time to test and assemble one product in the process of performing the manual work, and after each product is released from the jig after adjusting the set screw inside There was a cumbersome disadvantage because it had to.

Accordingly, an object of the present invention is to provide a device capable of automatically finding the center position of a set screw and testing a product at the center position when assembling the proportional control valve of the variable damper. .

In order to achieve the above object, the present invention provides an apparatus for setting a midpoint position of a spool mounted inside a proportional control valve, wherein a proportional control valve in which an upper plate and a lower plate are supported by a post, and a set screw is temporarily fastened. An oil supply block in which a flow path is formed to supply oil to each of the ports is installed on the upper plate, and a booster for supplying oil to the oil supply block is connected and the proportional control valve is provided on the upper surface of the oil supply block. Clamping means for clamping is installed, and a driving means is installed on the upper plate so that the center of gravity of the spool can be adjusted by rotating the temporarily fastened set screw of the proportional control valve. A control unit for intermittent rotation of the means may be installed.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

1 is a plan view showing a proportional control valve midpoint adjusting device according to the present invention;

2 is a front cross-sectional view of FIG.

3 is a side cross-sectional view of FIG.

4 is a plan view showing an oil supply block according to the present invention;

5 is a cross-sectional view showing a damping force variable damper according to the present invention,

FIG. 6 is a cross-sectional view illustrating the damping force variable damper shown in FIG. 5. FIG.

<Description of the symbols for the main parts of the drawings>

20; Damping force variable damper 21; housing

22; Tension oil port 23; Compressed oil pot

24; Supply oil port 29; Solenoid

30; Spool 31; Set screw

32; Upper plate 33; Post

34; Bottom plate 40; Oil supply block

41; Compression port 42; Tension port

43; Supply port 44; booster

50; Clamping means 51; Power jack

52; Pusher 53; Hinge bracket

54; Clamper 60; Driving means

61; Motor 62; coupler

63; Spindle block 64; Valve housing

65; Holder 66; Tool

67; Motor bracket 68; Spindle bracket

70; Control

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

1 is a plan view showing a proportional control valve center adjustment apparatus according to the present invention, Figure 2 is a front sectional view of Figure 1, Figure 3 is a side sectional view of Figure 1, Figure 4 is an oil supply block according to the present invention 5 is a cross-sectional view illustrating a damping force variable damper according to the present invention, and FIG. 6 is a cross-sectional view illustrating the damping force variable damper shown in FIG. 5.

According to a preferred embodiment of the present invention, when assembling the proportional control valve 20 of the variable damper as a device that can automatically find the center position of the spool 30 mounted therein and test the quality of the product at the center position, set An oil supply block 40 in which a flow path is formed to supply oil to each port of the proportional control valve 20 to which the screw 31 is temporarily fastened, and the proportional control valve 20 on an upper surface of the oil supply block 40. The driving means 60 and the proportional control to adjust the midpoint of the spool 30 by rotating the clamping means 50 for clamping the clamping proportional control valve 20 and the temporarily fastened set screw 31 of the clamped proportional control valve 20 It consists of a control unit 70 that can measure the pressure of each port of the valve 20 to control the rotation of the drive means 60, the oil supply block 40 and the drive means 60 is the upper plate (32) Installed on the upper side, and the clamping means 50 It is installed over the sub plate 34, and the upper plate 32 is installed on the upper surface of the lower plate 34 by the post 33. On the other hand, the booster 44 for supplying oil to the oil supply block 40 is connected via a hydraulic line.

The damping force variable damper of the conventional shock absorber is installed coaxially with the tube 3 inside the base shell 2, as shown in FIGS. 5 to 6. The gas chamber 4 is formed between (3), the base valve 5 is provided in the lower side of the tube 3, The inside of the tube 3, the inside of the tube 3, the compression chamber (C) The piston valve 6 partitioned into the hypertension chamber R is installed to be reciprocated by the piston rod 7, and the base valve 5 and the piston valve 6 are provided with tension orifices 5a and 6a. Compression orifices 5b and 6b are formed respectively.

In addition, an auxiliary cylinder 8 is provided coaxially with the outside of the tube 3, and inside the auxiliary cylinder 8, two communicating tubes 3a and 3b are formed on both sides of the tube 3, respectively. Flow paths 8a and 8b are formed.

On one side of the base shell 2, the fluid flowing through the two flow paths 8a and 8b formed inside the auxiliary cylinder 8 is supplied to the compression chamber C and the gas chamber 4 to provide damping force. A variable damping force variable valve 20 is provided.

And the damping force variable valve 20 is a tension oil port 22 and the compressed oil port 23 and the supply oil port in communication with the flow passage (8a) 8b formed in the auxiliary cylinder (8) and the gas chamber (4) 24 is provided with the housing 21 formed in one side.

In addition, a tension variable valve 25 and a compression variable valve 26 are installed in the housing 21, and a flow path tube 27 penetrates the central portion of the tension variable valve 25 and the compression variable valve 26. The flow path pipe 27 is provided with a tension variable valve 25, a compressed oil port 23, and a flow path 28 for communicating the compressed variable valve 26 and the supply oil port 24. A spool 30 is installed inside the flow path tube 27 so that the solenoid 29 can move linearly.

As described in the prior art, such a proportional control valve 20 should be assembled by finding a midpoint position for spool 30 in the proportional control valve 20 to be centered during assembly.

As shown in FIG. 4, the oil supply block 40 according to the present invention includes each flow path of the proportional control valve 20, that is, the tension oil port 22, the compression oil port 23, and the supply oil port 24. A tension port 42, a compression port 41, and a supply port 43 are formed on the upper surface so as to correspond to the tension port 42, and the tension port 42 is connected to the booster 44 for supplying hydraulic pressure.

The oil supply block 40 is fixed to the upper surface of the upper plate 32 by bolts.

The clamping means 50 according to the present invention includes a power jack 51 installed at one end of the lower plate so as to be located at both sides of the oil supply block 40, and a pusher 52 operating in the vertical direction by the power jack 51. The hinge plate 53 is installed on both upper surfaces of the upper plate 32, and the hinge bracket 53 is hinged to the hinge bracket 53, and the clamper 54 is moved by the vertical movement of the pusher 52. The clamping means 50 clamps the proportional control valve 20 to the upper surface of the oil supply block 40 by the seesaw movement of the clamper 54 to tightly and tightly couple the clamping means.

The drive means 60 according to the present invention includes a drive motor 61, a coupler 62 to control the driving force of the drive motor 61, a spindle block 63 connected to a shaft of the coupler 62, and a spindle. Tool for connecting the valve housing 64 connected to the block 63, the holder 65 installed on the outer circumference of the valve housing 64, and the valve housing 64 in the center to rotate the set screw 31 of the variable valve. It is made up of 66.

Complement the configuration and operation of the spindle block (63), valve housing (64) and holder (65).

The driving motor 61 and the spindle block 63 are fixed to the upper surface of the upper plate 32 by the motor bracket 67 and the spindle bracket 68.

According to the present invention, the control unit 70 rotates the tool 66 of the drive unit 60 forward and backward while checking the pressure of the proportional control valve 20 supplied with oil, thereby rotating the set screw 31. ) Position.

The method of adjusting the midpoint of the proportional control valve 20 using the proportional control valve 20 midpoint adjusting device according to the present invention configured as described above is as follows.

First, the set screw 31 is temporarily fastened to the proportional control valve 20 and aligned on the oil supply block 40. At this time, the ports of the proportional control valve 20 and the oil supply block 40 coincide with each other.

Subsequently, when the pusher 52 is raised by operating the power jack 51 of the clamping means 50, the rear end of the clamper 54 is lifted by the pusher 52, and the front end of the pusher 52 is reversed in the seesaw motion. By lowering the hinge coupling portion by the center by clamping the proportional control valve 20 and the oil supply block 40 by airtight coupling. At this time, the tool 66 of the drive means 60 is coupled in a straight line to rotate the set screw 31.

Subsequently, oil is supplied to the oil supply block 40 and the proportional control valve 20 through the booster 44, and the control unit 70 rotates the driving means 60 while checking the pressure of the proportional control valve 20. Let's do it.

The driving motor 61 generates a driving force by the supplied power, the coupler 62 interrupts the driving force of the driving motor 61, and the spindle block 63 is connected to the shaft of the coupler 62 so as to connect the spindle and the tool. Rotate 66.

Rotation of the tool 66 rotates the set screw 31 to adjust the position of the spool 30. After adjusting the midpoint position of the spool 30, the clamping means 50 is unclamped, and the temporarily set screw 31 is separated and removed.

In the above description, it should be understood that those skilled in the art can only make modifications and changes to the present invention without changing the gist of the present invention as it merely illustrates a preferred embodiment of the present invention.

As described above, according to the present invention, the center position of the set screw can be automatically found when assembling the proportional control valve of the variable damper, so that the assembly time can be significantly shortened as compared with the conventional manual assembly of the proportional control valve. have.

Claims (5)

A device for setting the midpoint position of a spool mounted inside a proportional control valve of a damping force variable damper, The upper plate and the lower plate are supported by the posts, An oil supply block having a flow path is installed on the upper plate to supply oil to each port of the proportional control valve to which the set screw is temporarily tightened. The booster for supplying oil to the oil supply block is connected, Clamping means for clamping the proportional control valve is installed on the upper surface of the oil supply block, Drive means is installed on the upper plate to rotate the temporarily set screw of the proportional control valve to adjust the midpoint of the spool, A control device for adjusting the proportional control valve of the damping force variable damper, characterized in that the control unit is provided to measure the pressure of each port of the proportional control valve to control the rotation of the drive means. The method of claim 1, The oil supply block has a tension port, a compression port, and a supply port formed on an upper surface of the oil supply block so as to correspond to each flow path of the proportional control valve, and the tension port is connected to a booster for supplying hydraulic pressure. Proportional valve central adjustment device. The method of claim 1, The oil supply block is fixed to the upper plate by a bolt, characterized in that the proportional control valve central adjustment device of the damping force variable damper. The method of claim 1, The clamping means includes a power jack installed at one end of the lower plate so as to be located at both sides of the oil supply block, a pusher operated up and down by the power jack, hinge brackets installed at both sides of the upper plate upper surface, and hinged to the hinge bracket. The proportional control valve central control device of the damping force variable damper, characterized in that it consists of a clamper coupled to the seesaw movement by the vertical movement of the pusher. The method of claim 1, The drive means includes a drive motor, a coupler for controlling the driving force of the drive motor, a spindle block connected to the shaft of the coupler, a valve housing connected to the spindle block, a holder installed at an outer periphery of the valve housing, and a valve housing in the center. A proportional control valve central control device for a damping force variable damper, characterized in that the tool is installed to rotate the set screw of the variable damper.