JP3246695B2 - Valve operation check device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for confirming the operation of a regulator valve used in an oil pump.

[0002]

2. Description of the Related Art Conventionally, a regulator valve operation confirmation test is performed by setting a regulator valve in a performance tester and supplying oil to create an engine mounted state.
This is performed by reading the valve opening pressure of the regulator valve with a pressure transducer. An example similar to this is disclosed in Japanese Patent Application Laid-Open No. 4-284163.

[0003]

However, the operation confirmation test requires a lot of time and man-hours, so that the work efficiency is poor. After the test, the oil is drained from the regulator valve to clean the inside of the valve, so that equipment such as an oil draining / cleaning device is required, and the running cost is increased due to energy for driving the equipment.

[0004] The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to make it possible to confirm the operation of a valve without supplying oil.

[0005]

In order to achieve the above object, according to the present invention, a spool is slidably housed in a valve body having one end opened and the other end closed. An operation check device for a valve, wherein an elastic member is contracted between one end of the spool and the other end closing portion of the valve body, and the valve opening pressure is set by the elastic member. A slider that is provided movably in the direction, and has a push bar that abuts the other end of the spool; urging means for urging the slider with a constant force in the compression direction of the elastic member; And detecting means for detecting

According to a second aspect of the present invention, a spool is slidably housed in a valve body having one end opened and the other end closed, and one end of the spool and the other end of the valve body. An elastic member is contracted between the closing member and the valve, and the valve is operated by the elastic member to set a valve opening pressure.The valve is provided to be movable in the sliding direction of the spool.
A slider having a push bar in contact with the other end of the spool, a moving means for moving the slider by a predetermined distance in a compression direction of the elastic member, and a reaction force provided on the slider for detecting a reaction force of the elastic member And a load cell.

[0007]

According to the first aspect of the present invention, the push bar of the slider is inserted from one end opening of the valve body and a constant load of the urging means is applied to the spool, whereby the spool is pressed by the elastic member. And the detecting means detects the amount of movement of the spool until the spool stops by balancing the force of the elastic member and the force of the urging means.

According to the second aspect of the present invention, the push bar of the slider is inserted from the one end opening of the valve body to move the spool a predetermined distance by overcoming the force of the elastic member. A reaction force of the elastic member received by the slider is detected by a load cell.

[0009]

An embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view showing a valve operation check device according to an embodiment of the present invention.

In this figure, W is a valve incorporated in a housing H. The valve W slidably accommodates a spool d in a valve body c having one end opened and the other end closed.
An elastic member f for seating the other end of the spool d on a seat portion e formed at one end opening of the valve body c is provided between one end of the spool d and the other end closing portion of the valve body c. The valve opening pressure is set by the elastic member f.

Reference numeral 1 denotes a base, and two pairs of clampers 2 for mounting the housing H are provided on the lower surface of the base 1.
And a guide rail 1a protruding in the sliding direction of the spool d of the valve W.

A guide 3 is slidably mounted on the guide rail 1a, and a slider 4 is suspended from the guide 3. An L-shaped push bar 5 which is inserted through one end opening of the valve body c of the valve W and abuts on the other end of the spool d projects from a lower portion of one side of the slider 4.

[0014] The upper portion of the other side of the slider 4, actuating lever 4 ₁ extending in the moving direction of the slider 4 is protruded, supporting member said operating rod 4 _1, projecting from the lower surface of the base 1 6
Slidably supported by The operating rod 4 ₁ between the slider 4 and the support member 6, the compression spring 7 which is biasing means for biasing is inserted the slider 4 with a constant force to the compression direction of the elastic member f ing.

Further, the lower surface of the base 1, has an operating rod ₈₁ abuts against the actuating rod 4 ₁ of the tip of the slider 4, the linear gauge sensor 8 is detecting means for detecting the movement of the slider 4 The linear gauge sensor 8 is connected to a comparator.

Further, an actuator 9 is mounted on the lower surface of the base 1 and located on the side opposite to the linear gauge sensor 8 with respect to the slider 4 and pushes the slider 4 back to a certain confirmation start position. actuating rod 9 ₁ is freely abuts the top of one side of the slider 4.

In the above structure, first, the actuator 4 overcomes the force of the compression spring 7 to move the slider 4 in FIG.
Then, the housing H is clamped by the clamper 3 and the valve W is set.

[0018] Then, the actuating rod 9 ₁ of the actuator 9 moves to the left in FIG. 1, moving the slider 4 leftward by the force of the compression spring 7, the push bar 5 of the slider 4
Is inserted through one end opening of the valve body c of the valve W and brought into contact with the spool d.
Return ₁ to its original position.

The spool d of the valve W is pushed by the force of the compression spring 7 to overcome the force of the elastic member f, and stops at a position (balance point) where the force of the elastic member f and the force of the compression spring 7 are balanced. This balance point is set in advance on the side where the spool d is pushed into the valve W from the relief point.

The amount by which the valve W is pushed by the spool is equal to the amount of movement of the slider 4, and is read by the linear gauge sensor 8 and output as an electric signal. Therefore, using a master valve (not shown) in which the upper limit and the lower limit of the valve opening pressure are set in advance, the moving range of the spool d is determined by the linear gauge sensor 8.
, The value output from the comparator is within the tolerance range of the valve opening pressure, so that the pass / fail judgment of the valve opening pressure of the valve W can be easily performed.

FIG. 2 is a front view showing a valve operation check device according to another embodiment of the present invention, FIG. 3 is a plan view of FIG. 2, and FIG. 4 is an enlarged sectional view of a main part of FIG. 5 is a plan view of FIG. 4, and FIG. 6 is a flowchart for confirming the operation of the valve.

2 to 5, reference numeral 14 denotes a slider mounted on the lower surface of the base 1. The slider 14 is linearly slid in the moving direction of the slider 4 by driving a ball screw by a pulse motor (or a servo motor). Actuator.

The slider 14 is provided with a mounting bracket 15 extending toward the valve W in the direction of movement of the slider 14, and a cam floor 16 is mounted on the tip of the mounting bracket 15. The cam floor 16 has a guide hole 16 a which is long in a direction perpendicular to the moving direction of the slider 14.
A cylindrical cam 17 is slidably fitted and attached to the guide hole 16a. A shaft 18 is attached to the cam 17, and the push bar 5 is connected and attached to a lower portion of the shaft 18.

A bearing 19 is provided on one side portion of the shaft 18 and the valve W of the base 1, and a rotating shaft 20 vertically penetrating the bearing 19 is rotatably mounted on the bearing 19. I have. One end of a revolving arm 21 is attached to a lower portion of the rotating shaft 20, and the other end of the revolving arm 21 is rotatably attached to an upper end of the shaft 18. As a result, the shaft 18 performs a turning operation around the rotation shaft 20 while being guided by the guide hole 16a of the cam floor 16 via the cam 17,
The push bar 5 is guided from a lateral position shifted from one end opening of the valve body c of the valve W until it is inserted into the one end opening. In this manner, the case where the push bar 5 interferes with the housing H and cannot be inserted straight into the one end opening of the valve body c is addressed.

The mounting bracket 15 and the cam floor 16
, A high-precision load cell 22 is provided, and an insulating joint 23 is provided between the load cell 22 and the cam floor 16. The load cell 22 is a measuring device for measuring a load acting on the load cell 22 by a change in voltage of a built-in strain gauge, and is connected to a comparator. The load becomes a load (reaction force of the elastic member f) applied to the push bar 5 transmitted through the cam 17, the cam floor 16, and the insulating joint 23.

A connection terminal 24 is provided above the shaft 18.
Is attached, and a lead wire 25 is connected to the connection terminal 24.
Are connected at one end. One end of a lead wire is connected to the valve body c, and the other end of the lead wire and the other end of the lead wire 25 are connected to each other via an ammeter, a power supply, and the like. A return confirmation circuit of a valve that closes when the push bar 5 contacts the spool d of the valve W is configured.

In the above configuration, first, the base 1 is mounted on the housing H conveyed to a predetermined position on the pallet 26 or the like.
And the two locating parts 1b provided on the base 1
Then, the position of the valve W is fixed by clamping the three positions A, B, and C of the housing H with the clamper 2 or the like to fix the position of the valve W, and the operation of the valve is confirmed according to the flowchart shown in FIG.

First, the slider 14 is moved to the right in FIG. 2 from the origin (movement start position), and the push bar 5 is inserted from one end opening of the valve body c of the valve W to contact the spool d. Further, the spool d is pushed a predetermined distance (7.20 mm) by overcoming the force of the elastic member f. Next, the slider 14 is retracted to the left in FIG. This is repeated several times. This is a smoothing operation for eliminating a state in which the spool d does not move in the valve body c.

Next, the slider 14 is moved from the origin to the right in FIG. 2, the push bars 5 jog feed to the contact point P ₁ to contact with the spool d, is brought into contact with the push bar 5 to the spool d. At this time, energization of the valve return confirmation circuit is started.

After the push bar 5 has come into contact with the spool d and a predetermined time has elapsed, the slider 14 is further moved rightward in FIG. 2 to move the push bar 5 to a relief point P ₂ of the valve W by a predetermined distance (7 .20 mm) and the elastic member f is compressed by the push bar 5.
At this time, the slider 14 is pushed through the push bar 5 or the like.
The load cell 22 detects the reaction force of the elastic member f received by the load cell 22, and the detected value of the load cell 22 is determined by the comparator connected to the load cell 22 to the tolerance range of the valve opening pressure (1).
2.5 to 13.5 kg) directly determines the quality of the valve opening pressure. The following (Table 1) shows the load cell 22
The measurement data of is shown. These measurement data can be displayed on a digital display or the like by connecting and using display means.

[Table 1] In Table 1, 12.2 kg of the 1162th measurement and 12.1 kg of the 1134th measurement are determined to be NG due to insufficient valve opening pressure, and the other measurements are determined to be OK.

Next, after the compression spring 7 is compressed by the push bar 5 and a predetermined time-out occurs, the slider 14 is moved to the position shown in FIG.
Point P slightly (0.2mm) before the origin to the left of
Return to ₃ and check if the valve return confirmation circuit is energized. Confirmation of energization, if the spool d valves W is returned by the force of the elastic member f, since the push bar 5 in the point P ₃ spool d is in contact, the confirmation of the return of the spool d . When energization cannot be confirmed, the spool d is hooked on the valve body c and does not return, so that a sliding failure of the spool d of the valve W can be confirmed.

[0032] Then, after a timeout of a predetermined time point P _3, further returned to the moved origin slider 14 to the left in FIG. 2.

[0033] As described above, the other judges the acceptability of the valve opening pressure at point P _2, to determine whether the slide of the spool d at the point P ₃ is defective, operation confirmation of valve W is completed. In addition, since the quality of the valve opening pressure is directly determined based on whether the detection value of the load cell 22 is within the tolerance range of the valve opening pressure, the detection value of the linear gauge sensor 8 corresponds to the tolerance range of the valve opening pressure. The accuracy is higher in reliability than in the above embodiment in which the quality of the valve opening pressure is indirectly determined based on whether or not the pressure is within the set range.

In addition, a pulse motor or the like is used as a drive source of the slider 14 with respect to the depth of the spool receiving hole of the valve body c, the variation of the locate position in the base 1, the positioning error of the pallet 26, and the like. The moving distance can be adjusted with high accuracy.

Although the regulator valve has been described in the above two embodiments, it is needless to say that the present invention is not limited to this.

[0036]

As described above, according to the present invention, a spool is slidably housed in a valve body having one end opened and the other end closed, and one end of the spool and the other end closed portion of the valve body are closed. An operation check device for a valve in which an elastic member is contracted and a valve-opening pressure is set by the elastic member. A slider having a push bar, biasing means for biasing the slider with a constant force in the compression direction of the elastic member, and detecting means for detecting the amount of movement of the slider are provided. By applying a constant load of the urging means to the spool by inserting from one end opening of the main body, the spool is moved by overcoming the force of the elastic member, and the force of the elastic member and the force of the urging means are balanced. The spool Can be detected by the detecting means spool moving amount until the stop through the slider.

According to another aspect of the present invention, a spool is slidably housed in a valve body having one end opened and the other end closed, and an elastic member is provided between one end of the spool and the other end closing portion of the valve body. Is a valve operation check device in which the valve opening pressure is set by the elastic member, and is provided movably in the sliding direction of the spool, and has a push bar that abuts on the other end of the spool. A slider, a moving unit for moving the slider by a predetermined distance in a compression direction of the elastic member, and a load cell provided on the slider to detect a reaction force of the elastic member. The spool is inserted through one end opening of the main body to move the spool a predetermined distance by overcoming the force of the elastic member. At this time, the reaction force of the elastic member received by the slider is detected by a load cell. It can be.

Therefore, according to the present invention, it is possible to confirm whether or not the valve can be opened accurately and smoothly with the valve opening pressure without supplying oil as in the prior art. Work and cleaning can be eliminated, and the man-hours can be greatly reduced, so that the work efficiency can be greatly improved. Reduction can be achieved. In addition, since the configuration is simple and can be made compact, it can be easily incorporated into the final step of the valve assembly line.

[Brief description of the drawings]

FIG. 1 is a front view showing a valve operation check device according to an embodiment of the present invention.

FIG. 2 is a front view showing a valve operation check device according to another embodiment of the present invention.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an enlarged sectional view of a main part of FIG.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is a flowchart for confirming the operation of a valve.

[Explanation of symbols]

 W valve c valve body d spool f elastic member 4 slider 5 push bar 7 compression spring (biasing means) 8 linear gauge sensor (detection means) 14 slider 22 load cell

Claims (2)

(57) [Claims] A spool is slidably received in a valve body having one end opened and the other end closed, and an elastic member is contracted between one end of the spool and the other end closing portion of the valve body. A slider having a push bar that is provided movably in the sliding direction of the spool, and has a push bar that abuts the other end of the spool; An operation confirmation device for a regulator valve, comprising: urging means for urging a slider with a constant force in a compression direction of said elastic member; and detecting means for detecting an amount of movement of said slider. 2. A spool is slidably received in a valve body having one end opened and the other end closed, and an elastic member is contracted between one end of the spool and the other end closing portion of the valve body. A slider having a push bar that is provided movably in the sliding direction of the spool, and has a push bar that abuts the other end of the spool; A device for confirming the operation of a regulator valve, comprising: moving means for moving a slider by a predetermined distance in a compression direction of said elastic member; and a load cell provided on said slider for detecting a reaction force of said elastic member. .