JP6449628B2 - valve - Google Patents

Description

  The present invention relates to a valve that is manually opened and closed.

  2. Description of the Related Art Conventionally, a valve has been proposed that manually opens and closes a flow path by turning a handle to open and close the flow path (see, for example, Patent Document 1).

JP 2000-314479 A

  However, in the above valve, when the valve main body is not fixed to another member, the valve main body is held by one hand while the other hand is used so as not to add to the piping by twisting the handle operation. It is necessary to open and close, and operability is not so good. In addition, even if the operation part is made into a slide switch type so that the valve body can be held and opened / closed simultaneously with one hand, the flow path pipe to which the internal pressure is applied is pushed in the direction perpendicular to the flow path pipe. In order to crush, a large operation load is required, and the operability is not so good.

  Accordingly, an object of the present invention is to provide a valve capable of easily opening and closing a flow path with one hand even when the valve body is not fixed.

  In order to solve the above-described object, a valve according to one embodiment of the present invention includes a valve body, a flow path tube that is formed of an elastic material, is held by the valve body, and has a flow path through which a fluid flows, and the valve A switch provided on the body and configured to be movable between an open position where the flow path is in an open state and a closed position where the flow path is in a closed state; A booster mechanism that boosts the driving force applied to the switch when moving the switch from the open position to the closed position, and the driving force boosted by the booster mechanism is received to deform the flow path tube, A tightening member for closing the flow path of the flow path pipe.

  The booster mechanism may be a mechanism that includes a plurality of links and boosts the driving force based on the lever principle.

  Moreover, you may further provide the stopper which contact | abuts to the said switch in the said closed position, and controls that the said switch moves to the said open position from the said closed position.

  The opening and closing member is further connected to the booster mechanism, and the flow path pipe has an end portion on the fluid outlet side, and the flow path pipe is deformed by the tightening member. A release hole that communicates the flow path and the outside is formed at a position closer to the one end than the opening and closing member is displaced with the movement of the booster mechanism, and the switch is in the open position. The release hole may be contacted and closed, and may be separated from the release hole when the switch is in the closed position.

  Further, the stopper may abut against the switch in the open position and restrict the switch from moving from the open position to the closed position.

  The shape of the cross section perpendicular to the extending direction of the flow channel tube is an oval or elliptical ring, and the fastening member is arranged along the short direction of the oval or elliptical ring. It may be deformed.

  ADVANTAGE OF THE INVENTION According to this invention, even if the valve body is not fixed, the valve which can open and close a flow path with one hand can be provided.

The external appearance perspective view of the valve | bulb in the open state in this embodiment is shown. The front view of the valve | bulb in the open state in the state which removed the cover member of the valve body is shown. The perspective view of the internal structure of the valve | bulb in an open state is shown. The front view which looked at the switch from the one side of the X direction is shown. The top view of a connection ring is shown. The front view of an opening-and-closing member is shown. The front view of a fastening member is shown. The external appearance perspective view of the valve | bulb in a closed state is shown. The front view of the valve | bulb in a closed state in the state which removed the cover member of the valve body is shown. The perspective view of the internal structure of the valve | bulb in a closed state is shown.

  A valve according to an embodiment of the present invention will be described with reference to the drawings. The valve 1 in this embodiment is applied to an air supply line to an actuator of a pneumatically operated valve, for example.

  FIG. 1 shows an external perspective view of the valve 1 in the open state in the present embodiment, and FIG. 2 shows a front view of the valve 1 in the open state in a state where the lid member 2B of the valve body 2 is removed. 3 shows a perspective view of the internal structure of the valve 1 in the open state. As shown in FIGS. 1 and 2, the valve 1 includes a valve body 2, a switch support plate 3, a switch 4, a connecting ring 5, first to third links 6 to 8 that are booster mechanisms 20, and an open / close state. A member 9, a tightening member 10, a flow channel pipe 11, and a pair of one-touch joints 12 are provided. In the following description, the longitudinal direction of the bulb 1 will be described as the X direction, the short direction as the Y direction, and the direction orthogonal to the X direction and the Y direction as the Z direction. Further, the description will be made assuming that the switch 4 side is the upper side and the opposite side is the lower side.

  The structure of the valve body 2 will be described with reference to FIGS. The valve body 2 is made of resin or the like, has a hollow, substantially rectangular parallelepiped shape, and includes a body main body 2A and a lid member 2B. The body body 2A has a bottom wall 2A1, a pair of end walls 2A2, a side wall 2A3, and a top wall 2A4. The pair of end walls 2A2 is provided at each end in the X direction of the bottom wall 2A1. The side wall 2A3 is provided on one side in the Y direction of the bottom wall 2A1. The top wall 2A4 faces the bottom wall 2A1 in the Z direction, and is connected to the pair of end walls 2A2 and side walls 2A3. A recess 2c is formed by the bottom wall 2A1, the pair of end walls 2A2, the side wall 2A3, and the top wall 2A4.

  At the end of each end wall 2A2 on the bottom wall 2A1 side, a tube insertion groove 2d extending in the Y direction is formed. Each tube insertion groove 2d is open to the end surface of the recess 2c and the end wall 2A2 (the end surface on the front side in FIG. 2). Each end wall 2A2 is formed with a tube insertion groove 2d extending in the X direction and an insertion hole 2e opening to the outside. Further, a plate insertion hole 2f extending in the X direction and penetrating through the end wall 2A2 is formed on the top wall 2A4 side of the end wall 2A2 on one side (right side in FIG. 2). Further, at the end of the other end wall 2A2 (left side in FIG. 2) on the top wall 2A4 side, a switch that extends in the Y direction and opens to the end surface of the recess 2c and the end wall 2A2 (the end surface on the front side in FIG. 2). An insertion groove 2g is formed. By forming the switch insertion groove 2g, a plate placement surface 2h is formed on the other end wall 2A2. The other end wall 2A2 is formed with a plate insertion recess 2i that opens into the switch insertion groove 2g.

  As shown in FIGS. 1 and 2, a switch through hole 2j is formed in the top wall 2A4. The top wall 2A4 is provided with a stopper 2K that protrudes into the switch through hole 2j. Each of the bottom wall 2A1 and the pair of end walls 2A2 is formed with a bolt screwing hole 2m in which a female screw is formed.

  As shown in FIG. 1, the lid member 2B has a rectangular plate shape, and is formed with three bolt insertion holes 2n corresponding to the three bolt screwing holes 2m. The lid member 2B is fixed to the body main body 2A by inserting the bolt 2P into the bolt insertion hole 2n and screwing into the bolt screwing hole 2m. The opening of the recess 2c of the body main body 2A is closed by the lid member 2B. The cover member 2B has four shaft support holes 2o (in FIG. 1, only one shaft support hole 2o is drawn). Note that a shaft support hole (not shown) is also formed on the side wall 2A3 at a position facing the four shaft support holes 2o.

  Next, an internal configuration of the valve 1 will be described with reference to FIGS.

  As shown in FIGS. 2 and 3, the switch support plate 3 has a plate shape extending in the X direction, one end portion is placed on the plate placement surface 2 h and inserted into the plate insertion recess 2 i, and the other end portion is a plate. It is inserted into the insertion hole 2f and supported by the body main body 2A.

  The switch 4 is made of resin or the like and is disposed on the switch support plate 3 so as to be slidable. The switch 4 has a base portion 4A and an operation portion 4B. The base 4A has a plate shape and is located between the top wall 2A4 and the switch support plate 3. The width in the Y direction of the base 4A is configured to be larger than the width in the Y direction of the switch through hole 2j. When the valve 1 is in the open state, a part of the switch 4 is located in the switch insertion groove 2g. The position of the switch 4 in FIGS. 1 to 3 is an open position where a flow path 11c of a flow path pipe 11 described later is opened, and the position of the switch 4 in FIGS. This is a closed position where the flow path 11c is closed.

  FIG. 4 shows a front view of the switch 4 as viewed from one side in the X direction. As shown in FIG. 4, the switch support plate 3 side at one end in the X direction of the base 4A has a ring mounting portion 4C. Notches 4d are formed on both sides in the Y direction of the ring mounting portion 4C. Further, the ring mounting portion 4C is formed with a ring insertion hole 4e extending in the Y direction and opening to the notch 4d.

  As shown in FIGS. 1 and 2, the operation portion 4B is provided on the base portion 4A and protrudes to the outside of the valve body 2 through the switch through hole 2j.

  FIG. 5 shows a plan view of the connecting ring 5. The connection ring 5 is made of resin or the like and has a substantially rectangular ring shape. As shown in FIG. 2, the connection ring 5 has one short side portion 5A inserted into the ring insertion hole 4e, and is rotatably attached to the ring attachment portion 4C. The switch 4 is movable in the Y direction along the short side portion 5A. Further, the other short side portion 5B of the connection ring 5 is located on the bottom wall 2A1 side of the switch support plate 3 so that the switch support plate 3 penetrates the inside of the connection ring 5.

  As shown in FIGS. 2 and 3, the booster mechanism 20 includes first to third links 6 to 8. The first link 6 is provided to be rotatable about a first shaft 13 fixed to the valve body 2. One end portion of the first link 6 is rotatably connected to the short side portion 5B of the connecting ring 5. One end of the second link 7 is rotatably connected to the other end of the first link 6. The third link 8 is provided to be rotatable around a second shaft 14 fixed to the valve body 2. One end portion of the third link 8 is rotatably connected to the other end portion of the second link 7, and the other end portion of the third link 8 is rotatably connected to one end portion of the fastening member 10. ing.

  The distance from the first shaft 13 to one end of the first link 6 is configured to be approximately twice the distance from the first shaft 13 to the other end of the first link 6. The distance from the second shaft 14 to one end of the third link 8 is configured to be approximately twice the distance from the second shaft 14 to the other end of the third link 8.

  FIG. 6 shows a front view of the opening / closing member 9. The opening / closing member 9 has a rectangular plate shape, a shaft connection hole 9a is formed at one end portion thereof, and a shaft insertion hole 9b (see also FIG. 2) having an oval shape in a side view is formed at the other end side. As shown in FIGS. 2 and 3, the connection shaft 15 is inserted into the shaft connection hole 9 a and the portion of the first link 6 between the first shaft 13 and the other end of the first link 6. One end of the member 9 is rotatably connected to the first link 6.

  A third shaft 16 fixed to the valve body 2 is inserted through the shaft insertion hole 9b. The length of the oval shaft insertion hole 9 b in the longitudinal direction is longer than the diameter of the third shaft 16. One end of the opening / closing member 9 is displaced with the rotation of the first link 6, and the other end of the opening / closing member 9 is displaced according to the positional relationship between the one end of the opening / closing member 9 and the third shaft 16. That is, the other end of the opening / closing member 9 is displaced along the third shaft 16 in accordance with the displacement of the one end of the opening / closing member 9. When the opening / closing member 9 is displaced, the tip of the other end of the opening / closing member 9 abuts and separates from the channel tube 11, and in a state of contacting the channel tube 11, The release hole 11d is configured to be closed.

  FIG. 7 shows a front view of the tightening member 10. The fastening member 10 has a rectangular plate shape, and the width in the Y direction is configured to be larger than the width in the Y direction of a main body portion 11A of the flow channel tube 11 described later. A connecting recess 10a is formed at the approximate center in the Y direction of one end of the tightening member 10. A shaft connection hole 10 b is formed at one end of the tightening member 10. Then, the other end portion of the third link 8 is disposed in the connection recess 10a, and the connection shaft 17 is inserted into the shaft connection hole 10b and the other end portion of the third link 8, as shown in FIGS. Further, one end portion of the tightening member 10 is connected to the other end portion of the third link 8 so as to be rotatable.

  A shaft insertion hole 10 c having an oval shape in a side view is formed in the center of the tightening member 10. A fourth shaft 18 fixed to the valve body 2 is inserted through the shaft insertion hole 10c. The length of the oval shaft insertion hole 10 c in the longitudinal direction is longer than the diameter of the fourth shaft 18. One end of the tightening member 10 is displaced as the third link 8 rotates, and the other end of the opening / closing member 9 is displaced according to the positional relationship between the one end of the tightening member 10 and the fourth shaft 18. To do. That is, the other end portion of the tightening member 10 is displaced along the fourth shaft 18 in accordance with the displacement of the one end portion of the tightening member 10. Then, the distal end of the other end portion of the tightening member 10 is configured to press and deform the flow channel tube 11 by the displacement of the tightening member 10 so that the flow channel tube 11 is closed.

  The channel tube 11 is made of an elastic material such as urethane or silicon and has a cylindrical shape. The flow channel tube 11 has a main body portion 11A and a pair of mounting portions 11B. The main body part 11A has an oval cross section perpendicular to the X direction, and each mounting part 11B has an annular cross section perpendicular to the X direction. Each of the mounting portions 11B is inserted into the tube insertion groove 2d in the body main body 2A, whereby the flow channel tube 11 is mounted on the body main body 2A. The main body 11 </ b> A is located between the bottom wall 2 </ b> A <b> 1, the opening / closing member 9 and the fastening member 10. A release hole 11d that communicates the flow path 11c and the inside of the valve body 2 is formed at substantially the center in the X direction of the main body 11A.

  The pair of one-touch joints 12 are respectively fitted into the fitting holes 2e of the end wall 2A2, and the tips are in contact with the mounting portions 11B of the flow channel tube 11. In the present embodiment, the right-side one-touch joint 12 that is the primary side is connected to an air supply source via a tube, and the left-side one-touch joint 12 in FIG. 2 that is the secondary side is pneumatically operated via the tube. Connected to the valve.

  Next, the operation when the valve 1 is changed from the open state to the closed state will be described. In the valve 1 in the open state, the opening / closing member 9 closes the release hole 11d, and the tightening member 10 is in contact with the main body portion 11A of the flow channel tube 11 but is not deformed.

  With the user holding the valve body 2, the operation unit 4 </ b> B of the switch 4 is slid. Specifically, the operation unit 4B of the slide 4 in the state shown in FIG. 1 is moved to the opposite side of the original position as shown in FIG. 8, bypassing the stopper 2K. That is, the switch 4 is moved from the open position to the closed position. With this movement, in FIG. 2, one short side 5A of the connecting ring 5 moves to the right along the X direction. Thereby, the other short side part 5B of the connection ring 5 moves downward, and one end part of the first link 6 also moves downward. That is, the first link 6 rotates around the first shaft 13.

  Due to the downward movement of one end of the first link 6, the other end of the first link 6 moves upward. Since the distance from the first shaft 13 to one end of the first link 6 is configured to be approximately twice the distance from the first shaft 13 to the other end of the first link 6, the first link At the other end of 6, a force twice as large as the force applied to one end of the first link 6 is generated. Further, as the other end of the first link 6 moves upward, the opening / closing member 9 also moves upward, and the tip of the other end of the opening / closing member 9 extends from the release hole 11d as shown in FIGS. Separate. Thereby, the secondary side of the valve 1 is opened.

  As the other end of the first link 6 moves upward, the second link 7 moves upward as a whole, and one end of the third link 8 also moves upward. Thereby, the 3rd link 8 rotates centering on the 2nd shaft 14, and the other end part of the 3rd link 8 moves below. Since the distance from the second shaft 14 to one end of the third link 8 is configured to be approximately twice the distance from the second shaft 14 to the other end of the third link 8, the third link At the other end of 8, a force twice as large as the force applied to one end of the third link 8 is generated. Therefore, a force four times as large as the force applied to the one end of the first link 6 is generated at the other end of the third link 8. In this way, the driving force applied to the switch 4 is boosted by the boost mechanism 20 and transmitted to the tightening member 10.

  By the downward movement of the other end portion of the third link 8, the fastening member 10 moves downward, and the tip of the other end portion of the fastening member 10 moves down the main body portion 11A of the flow channel tube 11 (flow Press along the short circular direction of the oval of the tube 11. As a result, as shown in FIGS. 9 and 10, the main body portion 11 </ b> A is deformed, the upper portion of the main body portion 11 </ b> A comes into contact with the lower portion, and the valve 1 is closed. The tightening member 10 is configured to press the flow path tube 11 perpendicular to the direction in which the flow path tube 11 extends (X direction) in a state where the flow path of the flow path tube 11 is closed. ing.

  In order to change the valve 1 from the closed state to the open state, the switch 4 is moved from the closed position to the open position. As a result, the booster mechanism 20 or the like operates in reverse to the above operation, the pressing of the tightening member 10 against the flow path tube 11 is released, and the opening / closing member 9 is in a state of closing the release hole 11d.

  When the valve 1 is in the closed state, the tightening member 10 is pushed by the air pressure from the air supply source, but the operation portion 4B of the switch 4 comes into contact with the stopper 2K and moves from the closed position to the open position. Therefore, the tightening member 10 is not displaced and the closed state of the valve 1 is maintained. Similarly, when the valve 1 is in the open state, the opening / closing member 9 is pushed by the air pressure from the air supply source, but the operation portion 4B of the switch 4 contacts the stopper 2K and moves from the open position to the closed position. Therefore, the opening / closing member 9 is not displaced, and the contact of the opening / closing member 9 with the release hole 11d is maintained.

  As described above, the valve 1 according to the present embodiment operates as the switch 4 moves, and the booster mechanism 20 that boosts the driving force applied to the switch 4 when the switch 4 is moved from the open position to the closed position. The tightening member 10 receives the driving force boosted by the booster mechanism 20 and presses and deforms the flow path pipe 11 to close the flow path 11c of the flow path pipe 11.

  In this way, the force by which the user operates the switch 4 is boosted by the booster mechanism 20, and the channel tube 11 is tightened by the tightening member 10. For this reason, the user can open and close the valve 1 with a small force. Therefore, even if the valve body 2 is not fixed to another member, the valve 1 can be opened and closed with one hand.

  Further, the booster mechanism 20 is composed of a plurality of first to third links 6 to 8 and is a mechanism that boosts the driving force based on the lever principle. Therefore, the driving force applied to the switch 4 is boosted with a simple configuration. can do.

  Further, the stopper 2K abuts on the switch 4 in the closed position and restricts the switch 4 from moving from the closed position to the open position, thereby preventing displacement of the tightening member 10 due to air pressure from the air supply source. And the closed state of the valve 1 can be maintained.

  Further, the opening / closing member 9 is displaced in accordance with the movement of the booster mechanism 20, and abuts against and closes the release hole 11d when the switch 4 is in the open position, and is separated from the release hole 11d when the switch 4 is in the closed position. Therefore, the valve 1 can function as a three-way valve, and when the valve 1 is in the closed state, the secondary side of the pneumatically operated valve can be released to the atmosphere.

  Further, the stopper 2K abuts on the switch 4 in the open position and restricts the switch 4 from moving from the open position to the closed position, so that the opening / closing member 9 is prevented from being displaced by the air pressure from the air supply source. It is possible to prevent the opening / closing member 9 from being separated from the release hole 11d.

  Further, the tightening member 10 deforms the channel tube 11 along the short direction of the oval and closes the channel 11c, so that the channel tube 11 is reduced without reducing the cross-sectional area as compared to the ring. The fastening member 10 can close the flow path 11c with a small movement distance while ensuring the flow rate of the flowing air.

  In addition, this invention is not limited to the Example mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention.

  For example, in the above-described embodiment, a stopper may be provided so that the other end portion of the fastening member 10 does not rotate in the counterclockwise direction from the position illustrated in FIG. A stopper may be provided so as not to rotate clockwise from the position shown in FIG.

  Moreover, although the cross-sectional shape of the channel tube 11 is an oval, it may be an oval. Moreover, although the booster mechanism 20 consists of the 1st-3rd links 6-8 and was a mechanism using a lever principle, another mechanism may be sufficient. The stopper 2K is a part of the valve body 2, but may be provided separately from the valve body 2. In addition, the driving force applied to the switch 4 is configured to be quadrupled by the booster mechanism 20, but the magnification is not limited to this, and may be configured to be a magnification according to necessity.

1: Valve, 2: Valve body, 2K: Stopper, 4: Switch, 6: First link, 7: Second link, 8: Third link, 9: Opening / closing member, 10: Tightening member, 11: Flow path Tube, 11d: Release hole, 20: Booster mechanism

Claims (5)

A valve body;
A flow path pipe made of an elastic material, held in the valve body, and having a flow path through which fluid flows;
A switch provided on the valve body and configured to be movable between an open position where the flow path is open and a closed position where the flow path is closed;
A booster mechanism that operates with the movement of the switch and boosts the driving force applied to the switch when the switch is moved from the open position to the closed position;
A tightening member that receives the driving force boosted by the booster mechanism, deforms the flow path tube, and closes the flow path of the flow path pipe;
And a stopper that contacts the switch in the closed position and restricts the switch from moving from the closed position to the open position .   The valve according to claim 1, wherein the booster mechanism is configured by a plurality of links, and is a mechanism that boosts the driving force based on a lever principle. An opening / closing member connected to the booster mechanism;
The flow channel tube has one end which becomes an outlet side of the fluid,
In the flow channel tube, a release hole that connects the flow channel and the outside is formed at a position closer to the one end than the portion deformed by the fastening member,
The opening / closing member is displaced in accordance with the movement of the booster mechanism, and contacts and closes the release hole when the switch is in the open position, and is separated from the release hole when the switch is in the closed position. Item 3. The valve according to item 1 or item 2 . The valve according to claim 3 , wherein the stopper contacts the switch in the open position and restricts the switch from moving from the open position to the closed position. The shape of the cross section perpendicular to the extending direction of the flow channel tube is an oval or elliptical ring, and the fastening member is arranged along the short direction of the oval or elliptical ring. The valve according to any one of claims 1 to 4 , wherein the valve is deformed.

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