JP2788809B2 - speed controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed controller, and more particularly, to a speed controller in which a check valve which is displaced according to a flow direction of a pressure fluid is detachably mounted on a seating portion of a main body.

[0002]

2. Description of the Related Art In order to drive and control an object using a pressure fluid, for example, pressure air, pneumatic devices have been widely used. In this case, the pneumatic device, for example, a cylinder usually has a plurality of ports for inflow and outflow of air. Generally, pressure air is introduced into these ports via a speed controller, and a piston disposed inside the cylinder is configured to reciprocate at a predetermined speed by the pressure air. . In this case, in order to speed up the reciprocating operation of the piston, that is, to shorten the response time of the cylinder and improve the working efficiency, each of the pipes connected to this cylinder, the solenoid valve, and the portion where the compressed air of the speed controller comes into contact with each other. It is effective to increase the effective cross-sectional area to reduce the fluid resistance of the pressurized air and allow the air to flow smoothly.

[0003]

However, when the effective sectional area of the solenoid valve or the like is to be increased, the size of each device is inevitably increased, and the setting place is restricted. In particular, this type of device is usually arranged in close proximity to make effective use of the small space, and it is preferable to make the device as small as possible. Also, when the pressurized air flows out of the solenoid valve, the water contained in the air is cooled by the adiabatic expansion and adheres to the inside of the pipe as steam, and when the cylinder is urged in the next step, this steam is released. Is carried into the cylinder by the flow of pressurized air, and there is a problem that water gradually accumulates inside the cylinder.

SUMMARY OF THE INVENTION The present invention has been made to solve this kind of problem, and achieves a further reduction in size, shortens the response time of a cylinder, and improves the degree of freedom in the arrangement of equipment. It is an object of the present invention to provide a speed controller capable of preventing pressurized air in the inside from flowing out of the speed controller to prevent moisture generated at the time of discharge from adhering to the inside of the pipe.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a first and a second communication with a pressure fluid passage.
A body having a connecting portion of the provided connected to passage made form in the body, a needle valve mechanism including a needle valve body for regulating the flow rate of the pressure fluid is discharged to the outside, provided in the body The first connection portion is closed by sitting on the first seating portion provided to allow communication between the second connection portion and the passage of the main body, while the passage of the main body is closed by seating on the second seating portion. And the first connecting portion and the second connecting portion are communicated with each other, and under the action of the pressure fluid flowing through the main body,
A check valve that is freely displaceable between a first seating portion and a second seating portion, and a check valve that is disposed proximate to a distal end portion of the needle valve body, flows in from the second connecting portion, and receives the body. A muffling member for muffling the pressure fluid discharged to the outside through the passage of the check valve, the check valve has a lip,
Pressure flow flowing from the second connecting part when sitting on the first seating part
Under the action of the body, it flexes outward to engage with the inner wall surface of the main body,
On the other hand, when seated on the second seating portion, it flows in from the first connecting portion.
It bends inward under the action of pressure fluid and separates from the inner wall of the body.
And wherein between you Rukoto.

[0006]

In the speed controller according to the present invention, the first
Check valve that is built by the inflow of pressure fluid from the connecting portion of the passageway of the body and closed infarction seated on the second seat of the body,
The pressurized fluid flows from the first connection portion to the second connection portion. On the other hand, when discharging the pressurized fluid, the check valve is turned on by the pressure of the pressurized fluid introduced from the second connecting portion .
The first connecting portion is closed by sitting on the first seating portion. Therefore,
The two connecting portions communicate with the passage of the main body, and the pressurized fluid is discharged from the passage through the needle valve mechanism to the outside. This place
Muffler located near the tip of the needle valve body
Silencing the pressurized fluid released to the outside by the member
You. As a result, water vapor generated during the discharge is trapped in the needle valve mechanism and improves response time.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A speed controller according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 10 is used.
Shows a speed controller according to the present embodiment. The speed controller 10 includes a pipe joint 14, a stepped cylindrical body 16 integrally fitted to the pipe joint 14,
A needle valve body 18 inserted into the cylindrical body 16 and a check valve 2 selectively engaged with a distal end of the cylindrical body 16
It basically consists of 0.

The pipe joint 14 has a cylinder whose both ends are open, and has a first hole 22 serving as an inflow port for a pressurized fluid at one end (a first connecting portion). The terminal end of the hole 22 is connected to the third hole 26 through the narrow second hole 24.
Is in communication with That is, the first seating portion 12 is formed by the annular protrusion 25 defining the second hole portion 24. The fourth hole 28 communicating with the third hole 26 is provided in the pipe joint 14.
An annular wall portion (second connecting portion) 30 is formed to surround the fourth hole portion 28 and protrude outwardly. A connection member 31 is fitted to the annular wall 30.

A so-called one-touch joint 32 is inserted into the first hole 22. This one-touch joint 32 has a release bush 34 in which a plurality of cutouts are defined at the bottom.
A collet 40 made of a synthetic resin, a chuck 38 made of a metal flat plate formed in a ring shape on the outer periphery of the collet 40, and a seal member 36 made of an elastic material such as natural rubber or synthetic rubber are provided on the outer periphery of the collet 40, respectively. It is configured.

The cylindrical body 16 is formed in the third hole 2 of the pipe joint 14.
6 from the open end side. A seal ring 42 is interposed between the inner wall of the pipe joint 14 and the outer peripheral wall of the cylindrical body 16. The cylindrical body 16 has a first cylindrical body 44 having a small diameter, and the first cylindrical body 44 is provided with a second cylindrical body 48 having a large diameter via a step 46.
Are connected integrally. A first passage 50 is defined inside the first cylindrical body 44 along an axis, and the first passage 50 is formed.
0 communicates with a large diameter second passage 52,
The second passage 52 is in communication with a plurality of third passages 54a and 54b in the vicinity of the terminal end in a direction orthogonal to the axis. The end of the cylinder 16 that defines the first passage 50 becomes a second seat 56 for the check valve 20. Reference numeral 58 denotes a valve section that defines a narrow space between the valve section and the valve tip section 64 that constitutes the needle valve body 18.

The needle valve body 18 has a muffling member 62 fixed using a step portion of the cylindrical body 16 forming the valve portion 58.
And a screw portion 66 is engraved on one end side,
A tapered valve tip portion 64 is formed on the other end side. A knob member 68 is attached to the end of the screw portion 66. The muffling member 62 made of sintered metal or palm lock abuts on a seal ring 70 fitted to the screw portion 66, and the seal ring 70 is tightened by a lock nut 60.

The check valve 20 has an umbrella shape in cross section and includes a lip 72 and a valve body 74. The check valve 20 is formed of an elastic body such as natural rubber or synthetic rubber,
The first seat portion 12 and the second seat portion 56 formed in the third hole portion 26 and formed by the annular projection 25 are disposed so as to be axially displaceable. In this case, the outer periphery of the lip 72 is in contact with the inner wall of the third hole 26. On the other hand, the valve body 7
4 has a trapezoidal cross section, a seat having a diameter larger than the inner diameter of the annular projection 25 is formed on one side, and a seat having substantially the same diameter as the outer diameter of the second seat 56 is formed on the other side. I have.

In the drawings, reference numeral 76 denotes a cylinder to which the speed controller 10 is fixed.

The speed controller 10 according to the present embodiment
Is configured as described above. Next, its operation will be described.

First, a connecting pipe connected to a solenoid valve (not shown) is inserted into a one-touch joint 32 provided in the first hole portion 22 of the speed controller 10 in advance, and the connecting member 31 is connected to a port of the cylinder 76. . further,
By rotating the knob 68, the distance between the valve tip 64 and the valve 58 is adjusted. Then, the pressure fluid is supplied into the cylinder 76 while the solenoid valve is being driven. For this reason, the pressure fluid flows from the one-touch joint 32 to the second hole 24 of the pipe joint 14, and the check valve 20 is displaced to the right by the pressure (see FIG. 1), and the valve body 74 is moved to the second seating portion 56.
In close contact. At this time, the pressure fluid bends the lip portion 72 of the check valve 20 and moves the tip of the lip portion away from the inner peripheral wall that defines the third hole portion 26 to allow the passage to the connecting member 31 to communicate (see FIG. 1). As a result, the pressure fluid flows into the cylinder 76 through the fourth hole 28, and displaces a piston (not shown) in the cylinder 76 in the direction of arrow A.

Next, when the piston is displaced in the direction of arrow B, the pressure fluid in the cylinder 76 must be discharged. At this time, the pressure fluid flows from the passage of the connecting member 31 to the third hole 26 via the fourth hole 28, and the check valve 20 which is in close contact with the second seating portion 56 of the cylindrical body 16 is moved to the position shown in FIG.
As shown in FIG. 5, the annular projection 25 is moved to the left and separated therefrom, and a seat formed on the valve body 74 is used as a second seating portion 56.
And close it. On the other hand, the lip portion 72 of the check valve 20 is also pressed by the pressure fluid in the direction toward the inner peripheral wall of the third hole portion 26, that is, the diameter increases, and the pressure fluid flows toward the second hole portion 24 side. Block (see FIG. 2).

As a result, the check valve 20 is displaced toward the second hole 24 by the pressurized fluid, and the second hole 2
By closing 4, the third hole 26 and the first passage 50 are in communication. Therefore, the pressure fluid that has flowed into the first passage 50 flows into the second passage 52 from the gap at the valve tip 64 of the needle valve body 18. And, this second passage 52
After the various noises in the pressurized fluid are silenced when passing through the silencing member 62 disposed therein, the third passages 54a, 54b
Is released into the atmosphere.

The pressure fluid in the solenoid valve (not shown), the connection pipe, and the first hole 22 of the speed controller 10 is discharged into the atmosphere from a discharge port provided in the solenoid valve.

As described above, in the present embodiment, when the pressure fluid flows into the cylinder 76 via the speed controller 10, the check valve 20 is connected to the second seat 56 of the cylindrical body 16.
And the lip 72 is bent so as to communicate with the introduction path R. When the pressure fluid is caused to flow out of the cylinder 76, the check valve 20 is separated from the second seating portion 56 to abut the second hole 24 to close the passage to the solenoid valve. Next, the first passage 50 defined in the second seat portion 56 is formed.
Then, the pressure fluid in the cylinder 76 can be discharged directly into the atmosphere from the speed controller 10 without passing through the solenoid valve, and the response time of the cylinder 76 can be shortened. Further, water vapor generated by the adiabatic expansion is not generated in the third hole portion 26, and therefore, water does not accumulate in the cylinder 76.

FIGS. 3 and 4 show a second embodiment of the present invention. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

The speed controller 80 includes a pipe joint 82 in which a pressure fluid introduction passage 81 is defined, a cylindrical body 84 integrally fitted with the pipe joint 82, and a cylindrical body 84.
And a check valve 86 that can be displaced along the axial direction of the speed controller 80.
It is basically composed of

The pipe joint 82 is an L-shaped tubular body, and includes a first hole 88 into which the one-touch joint 32 is inserted,
A second hole 90 having a small diameter communicating with the hole 88, and a third hole 92 extending in a direction orthogonal to the axis of the second hole 90.
Is defined inside.

The cylindrical body 84 is inserted into the third hole 92 of the pipe joint 82 via the seal ring 42. The cylindrical body 84 has a small diameter first cylindrical body 94 and a stepped portion 96 along the axial direction.
And a large-diameter second cylinder 98 interposed therebetween. First cylinder 9
4 is used as a concavity 100 as a result, and the first passage 102 is orthogonal to the concavity 100.
Are formed through. In addition, the first
A ring-shaped check valve 8 is displaceably provided on the outer peripheral wall of the cylindrical body 94.
6 is fitted. In this case, the lip portion 104 of the check valve 86 expands in the outward direction.

The first passage 102 has a cylindrical body 84.
Is communicated with a second passage 108 defined inside the first cylindrical body 94 along the axial direction. The terminal end of the second passage 108 communicates with a large-diameter third passage 110, and the third passage 110 is in communication with the plurality of fourth passages 112 a and 112 b via the muffling member 62. Second passage 108
The rod-shaped portion 109 of the cylindrical body 84 defining a narrow space defines a narrow space with the valve tip portion 64 of the needle valve body 18 and serves as a so-called throttle.

The operation of the speed controller 80 according to the second embodiment configured as described above will be described.

When a solenoid valve (not shown) is driven and pressure fluid flows into the third hole 92 from the one-touch joint 32 through the second hole 90 of the pipe joint 82, the check fluid 86 causes the check valve 86 to be depressed by the concave portion of the cylindrical body 84. The user slides down inside 100 and sits on the seat 103. Therefore, the valve portion 105 of the check valve 86 closes the first passage 102 defined in the concave portion 100 and cuts off the communication between the solenoid valve and the needle valve body 18.
On the other hand, the pressure fluid is supplied to the lip 104 of the check valve 86.
As a result, the pressure fluid communicates the second hole 90 with the introduction path 81. That is, the pressure fluid reaches the cylinder 76 via the connecting member 31 and displaces the piston of the cylinder 76 (see FIG. 3).

Next, when discharging the pressurized fluid in the cylinder 76, the pressurized fluid flows from the passage of the connecting member 31 to the lip 104 of the check valve 86, and this lip 104
Is enlarged and displaced upward in the recess 100, and the inside of the cylinder 76 and the second passage 108 are communicated via the first passage 102. At this time, the lip 104 of the check valve 86
Is pressed by the pressure fluid in a direction toward the inner peripheral wall of the third hole portion 92, and blocks the introduction of the pressure fluid into the second hole portion 90.

As a result, the pressure fluid does not flow to the solenoid valve side, but is silenced by the silencing member 62 from the first passage 102 of the recess 100 through the second passage 108, and then the fourth passage 11
2a and 112b are emitted to the atmosphere.

As described above, in the second embodiment, when the installation place of the speed controller 80 disposed between the solenoid valve and the cylinder 76 is small, the speed controller 80 is transformed into a vertical type. Applicable.

Next, FIG. 5 shows a third embodiment of the present invention. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The speed controller 120 according to the third embodiment includes a pipe joint 122, a cylindrical body 124 fitted integrally with the pipe joint 122, the needle valve body 18 inserted into the cylindrical body 124, It basically comprises a check valve 20 which can be displaced along the axial direction of the pipe joint 122.

The long tubular portion 12 constituting the pipe joint 122
2a, a first hole 126 is formed.
26, a ring-shaped groove 128 and a small-diameter second hole 1
30 communicates coaxially. The second hole 130 communicates with a third hole 132 formed in a short tubular portion 122 b constituting the pipe joint 122 by crossing their axes with each other, and an opening is formed in the third hole 132. The ring-shaped groove portion 128 communicates via 133. A plurality of slits 134 are formed in the outer circumference of the end portion of the cylindrical portion 122b in a circumferential direction at a predetermined angle range.
The hole 132 is opened to the outside.

In the first hole 126, the one-touch joint 32
And the receiving member 136 are inserted. This receiving member 136
A hole 138 having a small diameter is formed at the center of the hole 13.
8 has an inclined hole 1 corresponding to the shape of the check valve 20
40 communicates. A first seat 142 is provided at a boundary between the hole 138 and the inclined hole 140. The outer diameter of the ring-shaped groove 128 corresponds to the outer diameter of the check valve 20, and a second seat 144 is provided at a boundary between the inner end of the ring-shaped groove 128 and the second hole 130. Provided.

An introduction path R is defined between the distal end of the cylindrical body 124 and the connecting member 31, and a first passage 146 communicating with the second hole 130 is formed in the cylindrical body 124. The first passage 146 communicates with a second passage 148 formed in the axial direction of the cylindrical body 124, and the second passage 1
A large-diameter third passage 150 communicates coaxially with the end of the forty-eight. The third passage 150 communicates with a fourth passage 152 formed in the radial direction of the cylindrical body 124, and the fourth passage 15
2 is opened outward through the slit 134.

The operation of the speed controller 120 according to the third embodiment configured as described above will be described.

When a solenoid valve (not shown) is driven and pressure fluid flows from the one-touch joint 32 into the hole 138 of the receiving member 136 attached to the pipe joint 122, the check valve 20
FIG. 5 shows the inside of the inclined hole 140 due to the pressure fluid.
It moves in the middle and right directions and sits on the second seating section 144. Therefore, the valve main body 74 of the check valve 20 closes the second hole portion 130 and cuts off the communication between the solenoid valve and the needle valve main body 18. On the other hand, the pressure fluid is supplied to the lip 7 of the check valve 20.
2 is reduced in diameter, and the hole 138 becomes the groove 128 and the opening 133.
Communicates with the introduction path R via For this reason, the pressure fluid reaches the cylinder 76 via the connecting member 31 and the cylinder 7
The piston of No. 6 is displaced.

Next, when the pressure fluid in the cylinder 76 is discharged, the pressure fluid flows from the passage of the connecting member 31 to the lip 72 of the check valve 20, and the lip 72 is expanded in diameter to receive the receiving member 136. To the side. Therefore, the second
The inside of the cylinder 76 and the third passage 150 are communicated via the hole 130, the first passage 146, and the second passage 148.
At this time, the lip portion 72 of the check valve 20 is pressed by the pressure fluid in a direction toward the inner peripheral wall of the inclined hole portion 140 of the receiving member 136 and is brought into close contact with the first seating portion 142, and
The introduction of the pressurized fluid to 38 is prevented (see the two-dot chain line in FIG. 5).

As a result, the pressure fluid does not flow to the solenoid valve side, but the second hole 130, the first passage 146, and the second passage 148.
After being silenced by the silencing member 62 through the third passage 150 and the fourth passage 152, the plurality of slits 134
Released into the atmosphere from

FIG. 6 shows a fourth embodiment of the present invention.
Shown in In the fourth embodiment, the same components as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The speed controller 160 according to the fourth embodiment includes a pipe joint 162, a cylindrical body 164 integrally fitted with the pipe joint 162, the needle valve body 18 inserted into the cylindrical body 164, It basically comprises a check valve 20 that can be displaced along the axial direction of the pipe joint 162.

The second seat 144 constituting the pipe joint 162
Is provided with a first passage 166 coaxially with the cylindrical portion 122a, and the hole 168 communicates with an end of the first passage 166 such that its axis intersects. The cylindrical body 164 fits into the hole 168 and the second passage 170 of the cylindrical body 164 is
6, a third passage 172 having a large diameter coaxially communicates with an end of the second passage 170, and the third passage 172 forms a fourth passage 174 formed in the radial direction of the cylindrical body 164. It is opened outward from the slit 134 through the gap.

The operation of the speed controller 160 according to the fourth embodiment configured as described above is the same as that of the third embodiment.
This is substantially the same as the speed controller 120 according to the embodiment, and will be described briefly below.

Under the driving action of a solenoid valve (not shown), the pressure fluid flows from the one-touch joint 32 to the cylindrical portion 12 of the pipe joint 162.
When the check valve 20 flows into the inside of the second seat 2a, the check valve 20 moves rightward by the pressure fluid and is seated on the second seating portion 144. Accordingly, the first passage 166 is closed and the pressure fluid is
After reaching the cylinder 76 via the connecting member 31, the piston of the cylinder 76 is displaced.

On the other hand, when the pressure fluid in the cylinder 76 is discharged, the pressure fluid flows from the passage of the connecting member 31 to the introduction path R, and the check valve 20 engages with the first seat portion 142 and And the first passage 166 are communicated with each other (see a two-dot chain line in FIG. 6). For this reason, the pressure fluid does not flow to the solenoid valve side, and is muffled by the muffling member 62 through the first passage 166, the second passage 170, and the third passage 172 through the fourth passage 174, and then the air passes through the plurality of slits 134. Will be released.

Next, a fifth embodiment of the present invention is shown in FIGS. In the fifth embodiment, the same components as those in the fourth embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The speed controller 200 according to the fifth embodiment is different from the first to fourth embodiments described above.
A fixed check valve 202 is provided. That is, the fixing member 204 is disposed on the inner wall of the cylindrical portion 122a of the pipe joint 162, and the outer peripheral edge of the fixing member 204 is cut out by a predetermined angle to form the first hole 12 of the cylindrical portion 122a.
6, a passage 206 is defined. A check valve 202 is fixed to or integral with the end of the fixing member 204, and a lip 208 of the check valve 202 is freely engageable with the inner wall surface of the first hole 126 and the seat 210.

The operation of the speed controller 200 according to the fifth embodiment having the above-described structure will be schematically described below. First, under the action of a solenoid valve (not shown), the pressure fluid is supplied from the one-touch joint 32 to the pipe. It flows into the cylindrical portion 122a of the joint 162, and the lip portion 20 of the check valve 202
8 is reduced in diameter by the pressurized fluid and seats on the seat portion 210 (see FIG. 8). Accordingly, the first passage 166 is closed, and the pressurized fluid flows from the passage 206 through the connecting member 31 into the cylinder 76 to displace the piston of the cylinder 76.

On the other hand, when the pressurized fluid in the cylinder 76 is discharged, the pressurized fluid flows from the passage of the connecting member 31 to the introduction path R, and expands the lip 208 of the check valve 202. For this reason, the lip portion 208 separates from the seating portion 210 and contacts the inner wall surface of the cylindrical portion 122a, and
6 and the first passage 166 are communicated (see FIG. 7). Therefore, the pressure fluid does not flow to the solenoid valve side, and the first passage 16
6, the second passage 170, the third passage 172 to the fourth passage 17
After being silenced by the silencing member 62 through 4, the sound is released from the plurality of slits 134 to the atmosphere.

As described above, in the fifth embodiment, even if the fixed check valve 202 is used, the movable check valve 2
It is possible to have the same operation and effect as 0 and the like.

[0051]

According to the speed controller of the present invention, the following effects can be obtained.

[0052] While closed busy the passage of the main body check valve seated on the second seat when the pressure fluid from the first connecting portion to flow, the check when the pressure fluid flows from the second connecting portion <br / A check valve is seated on the first seat to allow the pressurized fluid to flow from the passage to the needle valve mechanism and be released from the speed controller. In this case, the tip of the needle valve body
The sound is released to the outside by a silencing member
Pressure fluid can be silenced,
The effect of preventing noise from being generated by the fluid is obtained.
You. In addition, it is possible to prevent water vapor from adhering to the introduction path communicating the solenoid valve and the cylinder,
As a whole, the response time of the cylinder is shortened, and the degree of freedom in arranging the devices can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory longitudinal sectional view of a speed controller according to a first embodiment of the present invention.

FIG. 2 is an explanatory vertical sectional view of the speed controller of FIG. 1 when discharging a pressure fluid.

FIG. 3 is an explanatory longitudinal sectional view of a speed controller according to a second embodiment of the present invention.

FIG. 4 is an explanatory longitudinal sectional view of the speed controller of FIG. 3 when discharging a pressure fluid.

FIG. 5 is an explanatory longitudinal sectional view of a speed controller according to a third embodiment of the present invention.

FIG. 6 is an explanatory longitudinal sectional view of a speed controller according to a fourth embodiment of the present invention.

FIG. 7 is an explanatory longitudinal sectional view of a speed controller according to a fifth embodiment of the present invention.

FIG. 8 is an operation explanatory diagram of the speed controller of FIG. 7;

[Explanation of symbols]

 10, 80 ... speed controller 12 ... first seating part 14, 82 ... pipe joint 16, 84 ... cylindrical body 18 ... needle valve body 20, 86 ... check valve 22, 88 ... first hole 24, 90 ... second hole Part 26, 92 ... Third hole 50, 102 ... First passage 52, 108 ... Second passage 72, 104 ... Lip part 76 ... Cylinder 120 ... Speed controller 122 ... Pipe joint 124 ... Cylindrical body 134 ... Slit 136 ... Receiving Member 142 First seat portion 144 Second seat portion 160 Speed controller 162 Pipe fitting 164 Cylindrical body 200 Speed controller 202 Check valve 204 Fixed member 206 Passage 208 Lip portion 210 Seat portion

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 62-190171 (JP, U) Japanese Utility Model Sho 53-105139 (JP, U) Japanese Utility Model Sho 58-84338 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) F16K 11/044

Claims (1)

(57) [Claims] 1. A main body having a first and second connecting portions communicating with the pressure fluid passage, provided connected to passage made form inside the body,
A needle valve mechanism including a needle valve body that regulates a flow rate of a pressure fluid discharged to the outside; and a second connection by closing a first connection portion by sitting on a first seat portion provided on the body. And the passage of the main body are communicated with each other . On the other hand, the passage of the main body is closed by being seated on the second seating portion, and the first connection portion and the second connection portion are communicated with each other. Said first under operation
A check valve that is freely displaceable between a seat portion and a second seat portion; and a check valve that is disposed close to a distal end portion of the needle valve body, flows in from the second connection portion, and passes through a passage in the body to the outside. A muffling member for muffling the released pressure fluid , wherein the check valve has a lip,
Flows from the second connecting portion when seated on the first seating portion
Bends outward under the action of pressure fluid and engages the inner wall of the body
On the other hand, when the user sits on the second seating portion, the current flows from the first connecting portion.
The inner wall surface of the main body flexes inward under the action of incoming pressure fluid
Speed controller which is characterized that you away from.