JPS604675A - Control valve device for fluid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to fluid control valve systems, and more particularly to valve systems that are selectively switchable between two positions.

There is a need for a simple, economical switching valve that slides between two positions, but current valve systems, even those operated at low pressures, are complex and consist of many parts. Unfortunately, manufacturing and maintenance costs are high.

It is an object of the present invention to provide a simple two-position valve system which is made up of a very small number of parts.

Another object of the present invention is to provide a two-position valve device in which the valve member is held in a selected one of two positions.

It is further an object of the present invention to provide a two-position system in which the distribution of fluid flowing between an erected supply port and a plurality of control ports is switched by means of a simple and commonly used sealing element. This paper aims to propose a valve device.

An object of the present invention is to provide a flat control surface housing having a supply port and a plurality of control ports communicating therewith.・
This is achieved by providing a two-position valve arrangement with a fixed position. The sliding member is integrally supported and moves between two selected positions on the flat N face. The sliding part is provided with a sealing element which is always slidably associated with the control surface to form a control chamber whenever it is placed in one of two selected positions. It matches. The slider is movable by a manually operated handle to place it in a selected one of two positions. In one selected first position, the supply boat communicates with one control boat, and when the slide is placed in the second position, the supply boat communicates with the other control boat. The handle and the sliding member are such that when the sliding member is placed in one of two selected positions, a spring seals the sliding member to one surface of the handle and allows the sliding member to freely slide. The arrangement is such that they are pressed into contact. The spring also has an actuation which causes the valve device to actuate through the center to hold the valve in one of two selected positions. The handle is provided with a releasable detent for gripping the handle in one of two control positions.

The instruction number 10 is a two-position valve device which is an embodiment of the present invention, and this valve device has a pipe line connected to both ends of a double-action type actuator 18, and a control valve connected to both ends of the pipe line. A device used to control the flow of pressure fluid from the pressure fluid source 12 through the supply port 13 of a selected one of the ports 14 and 16.

The valve device 10 includes a housing 20 supporting a sliding member 22 movable from one position to another by a hand operated handle 24.
It is equipped with The housing is formed with a recess 26 for supporting and guiding the sliding member 22 during its movement. The recess 26 is formed with a generally rectangular bottom wall with a flat control surface 28 . The supply ports 14 and 16 are opened in communication with the control surface 28 .

As shown in FIG. 1, the sliding member 22 has a cup shape, and a substantially rectangular support seat portion 32 is protruded from the -F surface 30. As shown in FIG.

The support seat 32 is disposed on the inner peripheral edge of the seal element 34 and functions to hold the seal element. Seal element 34
Is it the shape of an O-ring, and is it a rectangular support? 'The outer peripheral edge of the seat portion 32 is stretched. Seal element 34 as shown in Figure 1
The control surfaces 28 and M (together, form a movable control chamber 36 between the lower surface of the sliding portion 22 and the control surfaces 2i, 17).

IHi prison 36 td m 3 (as shown in Figure VC)
14 are arranged so as to be in communication with each other via the chamber 36. In FIG. 4, the movable control chamber 3G communicates the supply boat 13 with the control boat 1G.

J:,': The moving part 22 is provided with a socket 40 that receives the protrusion 42 of the nondle 24 lower ☆1; The handle 24 is pivotally supported by a bottle 44 mounted between one wall 48 of the body and an ear piece 46 standing up from the opposite wall. A pair of collars 50 are interposed in the bin 44 to pivotally attach the handle of the nondle 24 to the center of the ear piece 46 and the wall 48. A seat 52 is formed on the opposite side edge of the lower end of the handle 24 for seating the upper end of a compression spring 54, and the lower end of the spring 54 engages with the bottom of the outer periphery of the socket 40. The compression spring then acts on the seat 52 and the sliding member 22 to press the sliding member and the seal 34 against the control surface.

A cam 56 provided on the housing 20 and the sliding member 22 is provided on the housing 20 and the sliding member 22.
A cam means is provided in which the cam member and the cam ridge provided on the lower surface of the sliding member act complementary to each other. As shown in FIGS. 3 and 4, the cam 56 is protruded from the control surface in the vicinity of the opposing upright wall 60, and the cam 56 is protruded from the lower surface of the sliding member in the vicinity of the wall 60. are arranged on opposite sides of the

In the valve device shown in FIGS. 1 and 3, the cam 58 of the sliding member is located on the left side close to the cam 56, and the sliding member 22 is located at a first position offset to the left inside the housing. Handle 2
4 in a counterclockwise direction centering on the bin 44 as shown in FIG. Then, the sliding member 22 moves to the right, the cam 58 engages with the cam 56, and the sliding member is pushed upward against the pressing force of the spring 54, and then the cam 58 moves to the right side of the cam 56. The sliding member 22Fi passes from the right side to the left side and is moved to the second position shown in FIG. Figure 3, 1st
At this position, the supply boat 13 and the control boat 14 are in communication with each other. As shown in FIG. 3, No. 4, while the sliding part 22 moves from the first position to the second position, the cam 56 and the blade move in a complementary manner so that the sliding part 22 moves upward. It is pushed up and remains parallel to the control surface 28 until it reaches the second position.

The housing 20 and the sliding member 22 are made of a reinforced synthetic resin material mixed with glass fibers, for example, nylon in the circles and glass fibers in the other areas. A flange 20 is provided on the casing 20, and a mounting hole 64 for fixing with a bolt is bored at a location where the flange 20 is used.

The operation of the valve device ji10 of the present invention will be explained below. When the valve device IO is installed in a vehicle, the source of fluid pressure is considered to be negative pressure obtained from the intake manifold of an internal combustion engine that transmits power to the vehicle. Also, assuming that the valve device 10 is placed in the first position shown in FIG. 1, negative pressure can be continuously obtained as the actuator 18. The path of such pressure fluid extends from the source of the pressure fluid to the control room 36 through the supply pipe 13 and further to the first control boat 14.
The control port 14 can be connected to a line 66 forming a conduit connecting to the right end of the actuator 18 .

The left end of the actuator 18 communicates with the atmosphere through a line such as a conduit, the conduit 68 being connected to the actuator 18.
and the second control port 16, the control boat 16 opens into a recess 26 in the housing that communicates with the atmosphere. As a result, the differential pressure acting on the piston 70 between the atmospheric pressure acting on the left side and the negative pressure acting on the right side causes the piston 70 to deviate to the right side of the actuator. When it is desired to retract the shear actuator rod 72 by moving the piston 70 to the left side of the cylinder, the handle 24 is moved counterclockwise as shown in Figure 1, thereby causing the sliding member 22 to move toward the complementary position. After being pushed up by the action of the inferior rims 56,58, the slide member is moved to the other end of the recess 26 to engage the seal 34 with the control surface 28. Then, the supply boat 13 and the second control boat 16 are made to communicate with each other as shown in FIG. As a result, the source of negative pressure is connected to the control room 36 and the control boat 16 via the supply port 13.
It communicates with a conduit 68 connected to the right end of the actuator 18 via a conduit. At the same time, the control valve 14 is communicated with the atmosphere, and the differential pressure generated in the actuator 18 moves the piston 70 to the left side, causing the piston rod 7 to move to the left.
2 into the cylinder. Moving the handle 24 in the opposite direction causes the piston 76 to move in the opposite direction, to the right.

When the valve device 100 is turned off directly, the spring 54 is always h'A.
Since the %3 member is pressed downward, the valve assembly 10 does not stop at the central position, but is always placed in one or the other of the two positions, and can be manually selected to the other of the two positions. It remains in its place until it is moved.

However, if it is desired to securely hold the valve device 10 in one of two selected positions, the handle 24
Insert a pin 74 that passes across and passes through. Pin 74 locks a slidable locking pin 75. As shown in FIGS. 1 and 2, the lock pin 75 has a lower portion 76 that is slidably held in the vertical direction with respect to the housing. The locking pin 75 is also provided with a gripping portion 78 via a folded step 77, the gripping portion 78 being a pin that prevents movement of the handle 24 when the valve arrangement 10 is placed in one of two selected positions. 74
engage with. When it is desired to move the handle 24 to the other selected position, the handle 24 can be moved by pulling up the lock pin 75 so that the pin 74 passes under the bent step 77. I can do it. When the lock pin 75 is pushed down after the valve device 10 is placed in the newly selected position, the grip 78 engages the pin 74 to prevent the handle 24 from wobbling.

In a two-position control valve system, the housing and sliding member define a control chamber that can be placed in a selected set of boats in communication with each other. The control chamber is partially formed by an O-ring that surrounds the support seat of the slide. The sliding member is movable from one selected position to another against the biasing pressure of a spring which tends to cause the valve arrangement to remain in the selected position.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a valve device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the valve device shown in FIG. 1, and FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. 4 is a front view similar to FIG. 3 showing another operating state, and FIG. 5 is a sectional view taken along line 5--5 of FIG. '3. iu... Valve device 13... Supply port) 14, 16
・Φ - Control boat 22 @ ψ ・Sliding member 20 ・Curvature ・Housing name...Flat control surface 32...Boating ring 36
...Control room 40...Team Socket. Opening/cam procedure amendment document Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1 Case indication 1981 4 granted Application No. 106839 2 Title of invention Fluid control valve device 3 Person making the amendment Relationship to the case Patent applicant 4 , agent 465-

Claims (1)

Claims: (1) a housing having a flat control surface; and a sliding member supported by the housing for moving between @1 and a second position of the control surface; S1 mounted on the sliding member in slidably sealing engagement with the control surface and between the control surface and the sliding member;
an endless sealing element forming a sealing ring, first, second and thirteenth boats opening into said control surface and communicating with each other through a control chamber when the slide control is in a first position; and a first and third boat that communicate with each other via a control room when the sliding member is in the second position. Fluid control valve device. (27tm) The fluid control valve device according to claim 1, further comprising means for pressing the sealing element against the control surface. A cam is provided on the sliding member and the control surface in order to release the sliding member from the control surface that engages with the sliding part side and moves it between the second position and the second position. The fluid control valve device according to claim (1), characterized in that: (4) the sliding member has elasticity that resists a release operation from the control chamber that is engaged with the sliding member; The fluid control valve device according to claim 3, further comprising: (5) a socket pivotably mounted at a position remote from the control surface and provided on the sliding member; Claim further comprising a °C lever, one end of which is inserted into the shaft and moved together about the pivoted shaft to cause the sliding member to move between the first and second positions. The fluid control valve device according to item (1): 6) While the sliding portion side is moving between the first and second positions,
In order to press the sliding member against the control surface, a spring having both ends engaged with the lever and the sliding member is interposed on the east side. Fluid control valve device. (7) The seal element has a substantially circular cross-sectional shape,
3. The fluid control valve device according to claim 1, wherein the sealing engagement portion with the control surface is formed into a flat surface. (8) The sliding member is provided with a rectangular seat, and the sealing element is a cast-molded circular 01J ring, and when attached to the sliding member, the sealing element is fitted and seated on the outer edge of the seat. Claim No. 7 (7) characterized in that
) The fluid control valve device described in item 2. (9) The handle further includes means for selectively moving the handle between a locked position and a locked position to prevent the handle from moving beyond the selected position. A fluid control valve device according to claim 5.