JP2011117614A - Passage control valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a passage control valve that can smooth a rotation of a movable valve element without play without causing leakage from between a movable opening and a stationary opening in communication. <P>SOLUTION: The passage control valve 1 is so constructed that a fluid inlet 2b and the movable opening 4 are formed in the movable valve element 2, a plurality of stationary openings 5 are formed in an inner peripheral wall 3a of a stationary valve element 3, and the movable valve element 2 is rotatably fitted in the stationary valve element 3, where the movable valve element 2 is rotated to connect the movable opening 4 to the stationary openings 5 selectively. Protruding rib portions 9 are formed on an outer peripheral wall 2a of the movable valve element 2 for contact with the inner peripheral wall 3a of the stationary valve element 3. The protruding rib portions 9 include a plurality of lateral ribs 9a arranged around the cylinder axis of the movable valve element 2 and a plurality of longitudinal ribs 9b arranged along the cylinder axis of the movable valve element 2, and the movable opening 4 is formed in the outer peripheral wall 2a of the movable valve element 2 enclosed by the lateral ribs 9a and longitudinal ribs 9b. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a flow path control valve.

  Conventionally, as shown in FIG. 10, the flow path control valve 1 has a movable side opening 4 serving as a fluid outlet on the outer peripheral wall 2 a of a cylindrical movable side valve body 2 having a fluid inlet 2 b through which a fluid flows. A plurality of fixed side openings 5 are formed in the inner peripheral wall 3a of the fixed side valve body 3 having the inner hollow part 3b, and the movable side valve body 2 is rotatable to the inner hollow part 3b of the fixed side valve body 3. It is known that the movable side valve element 2 is rotated around its cylinder axis so that the movable side opening 4 is selectively communicated with the fixed side opening 5. In general, in such a flow path control valve 1, the inner diameter of the stationary valve body 3 and the outer diameter of the movable valve body 2 are formed to have substantially the same diameter. There is a problem that the rotating operation of the movable valve body 2 performed by the portion 3b cannot be performed smoothly due to frictional resistance. Therefore, in Patent Document 1, for example, the outer diameter of the movable valve body 2 is formed to be smaller than the inner diameter of the fixed valve body 3, and the outer peripheral wall 2a of the movable valve body 2 and the inner peripheral wall 3a of the fixed valve body 3 are A gap for reducing friction is formed between the movable side opening 4 and the fixed side opening 5 that are in communication with each other. The side valve body 2 rattles in the internal hollow portion 3 b of the fixed side valve body 3. In other words, at present, the movable side valve element 2 is rotated by reducing the frictional resistance with the fixed side valve element 3 without causing water leakage between the communicated movable side opening 4 and the fixed side opening 5. There is no flow path control valve 1 that can be smoothly performed without rattling, and such a flow path control valve 1 has been desired.

Japanese Patent Application No. 2001-90851

  The present invention has been made in view of the above-described conventional problems, and the rotational operation of the movable side valve element can be performed without causing water leakage between the communicated movable side opening and the fixed side opening. An object of the present invention is to provide a flow path control valve that can be smoothly performed without rattling.

  In order to solve the above-described problem, the flow path control valve according to claim 1 of the present invention serves as a fluid outlet in the outer peripheral wall 2a of the cylindrical movable valve body 2 having a fluid inlet 2b through which a fluid flows. A plurality of fixed-side openings 5 are formed in the inner peripheral wall 3a of the fixed-side valve body 3 having a movable-side opening 4 and having an internal hollow portion 3b, and the movable-side valve body 2 is connected to the inner hollow portion of the fixed-side valve body 3. A flow path control valve 1 which is rotatably mounted in 3b and rotates the movable side valve body 2 around its cylinder axis so that the movable side opening 4 selectively communicates with the fixed side opening 5. The outer diameter of the side valve body 2 is formed smaller than the inner diameter of the fixed side valve body 3, and a protruding rib portion 9 is provided on the outer peripheral wall 2a of the movable side valve body 2 so as to contact the inner peripheral wall 3a of the fixed side valve body 3. The rib portion 9 is formed in a long shape in the cylinder axis direction of the movable side valve body 2 and a plurality of horizontal ribs 9a are provided around the cylinder axis of the movable side valve body 2, and movable A movable side valve formed by a plurality of vertical ribs 9b formed around the cylinder axis of the valve body 2 and provided in the cylinder axis direction of the movable side valve body 2 and surrounded by the horizontal ribs 9a and the vertical ribs 9b. The movable side opening 4 is formed in the outer peripheral wall 2 a of the body 2.

  According to this, since the outer diameter of the movable side valve element 2 is formed smaller than the inner diameter of the fixed side valve element 3, there is no gap between the outer peripheral wall 2 a of the movable side valve element 2 and the inner peripheral wall 3 a of the fixed side valve element 3. A clearance S for reducing friction is formed, the frictional resistance with the fixed side valve body 3 is reduced, and the rotating operation of the movable side valve body 2 can be performed smoothly. Further, since the movable side opening 4 is surrounded by the vertical ribs 9b and the horizontal ribs 9a of the protruding rib portion 9 contacting the inner peripheral wall 3a of the fixed side valve body 3 provided in the movable side valve body 2, the communication is made Water leakage from between the movable opening 4 and the fixed opening 5 can be prevented. Further, since the protruding rib portion 9 has a plurality of lateral ribs 9a that are formed in the direction of the cylinder axis of the movable side valve element 2 and are provided around the cylinder axis of the movable side valve element 2, the movable side valve element 2 is It can rotate around the cylinder axis without rattling in the internal hollow portion 3b of the fixed-side valve body 3. Further, the projecting rib portion 9 has a longitudinal rib 9b formed in a long length around the cylinder axis of the movable side valve body 2 and provided in a plurality of strips in the cylinder axis direction of the movable side valve body 2, so that the movable side valve body 2 is It will contact the inner peripheral wall 3a of the fixed side valve element 3 over the cylinder axis direction, that is, the contact balance in the cylinder axis direction of the movable side valve element 2 to the inner peripheral wall 3a of the fixed side valve element 3 is also good. Therefore, rattling in the internal hollow portion 3b of the fixed valve body 3 of the movable valve body 2 can be further suppressed.

  Further, the flow path control valve according to claim 2 forms a movable side opening 4 serving as a fluid outlet on the outer peripheral wall 2a of the cylindrical movable side valve body 2 having a fluid inlet 2b through which a fluid flows. A plurality of fixed-side openings 5 are formed in the inner peripheral wall 3a of the fixed-side valve body 3 having the inner hollow portion 3b, and the movable-side valve body 2 is rotatably mounted in the inner hollow portion 3b of the fixed-side valve body 3. The flow path control valve 1 is configured such that the movable side valve body 2 is rotated about its cylinder axis so that the movable side opening 4 is selectively communicated with the fixed side opening 5. Protrusions 10 that are formed smaller than the inner diameter of the fixed valve body 3 and are in contact with the outer peripheral wall 2a of the movable valve body 2 on the inner peripheral wall 3a of the fixed side valve element 3 are provided on the entire circumference or spaced apart in the circumferential direction. The protrusion 10 surrounds the periphery of the fixed side opening 5.

  According to this, since the outer diameter of the movable side valve element 2 is formed smaller than the inner diameter of the fixed side valve element 3, there is no gap between the outer peripheral wall 2 a of the movable side valve element 2 and the inner peripheral wall 3 a of the fixed side valve element 3. A clearance S for reducing friction is formed, the frictional resistance with the fixed side valve body 3 is reduced, and the rotating operation of the movable side valve body 2 can be performed smoothly. Further, since the periphery of the fixed side opening 5 is surrounded by the protrusion 10 that is in contact with the outer peripheral wall 2a of the movable side valve body 2 provided on the inner peripheral wall 3a of the fixed side valve body 3, the movable side opening 4 communicated with the fixed side Water leakage from between the openings 5 can be prevented. Further, since the protrusions 10 are provided on the inner peripheral wall 3a of the fixed side valve body 3 on the entire circumference or are provided in a plurality in the circumferential direction, the movable side valve body 2 is disposed in the inner hollow portion 3b of the fixed side valve body 3. It can rotate around the cylinder axis without rattling.

  The present invention has an advantage that water does not leak from between the movable opening and the fixed opening that are communicated with each other, and the rotating operation of the movable valve body can be smoothly performed without rattling.

It is the movable side valve body in the flow-path control valve of the example of embodiment of this invention, Comprising: (a) is the front view which looked at the movable side valve body from the angle around a cylinder axis, (b) is ( It is the side view of a), (c) is the front view which looked at the movable side valve body from the other angle around a cylinder axis. (A) is the front view which looked at the movable side valve body same as the above from the angle around a cylinder axis, (b) is CC sectional view taken on the line of (a), (c) is (a). It is DD sectional drawing, (d) is the EE sectional view taken on the line (a). (A) is the whole perspective view of a flow control valve same as the above, (b) is an exploded perspective view of a flow control valve. It is sectional drawing of the principal part of a flow-path control valve same as the above. It is a schematic block diagram which shows the example of the usage condition of a flow-path control valve same as the above. It is the movable side valve body in the flow-path control valve of the other example of embodiment of this invention, Comprising: (a) is the front view which looked at the movable side valve body from the angle around a cylinder axis, (b) It is a side view of (a). (A) is the front view which looked at the movable side valve body same as the above from the angle around a cylinder axis, (b) is the FF sectional view taken on the line (a), (c) is (a). It is a GG line sectional view, and (d) is a HH line sectional view of (a). It is sectional drawing of the principal part of a flow-path control valve same as the above. It is sectional drawing of the principal part of the flow-path control valve of the further another example of embodiment of this invention. It is sectional drawing explaining a prior art.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  1 to 6 show an example of an embodiment of the present invention. As shown in FIGS. 1 to 4, the flow path control valve 1 forms a movable side opening 4 serving as a fluid outlet on an outer peripheral wall 2 a of a cylindrical movable side valve body 2 having a fluid inlet 2 b through which a fluid flows. A plurality of fixed side openings 5 are formed in the inner peripheral wall 3a of the fixed side valve body 3 having the internal hollow portion 3b, and the movable side valve body 2 is rotatably mounted in the internal hollow portion 3b of the fixed side valve body 3. Then, the movable side valve body 2 is rotated around its cylinder axis so that the movable side opening 4 is selectively communicated with the fixed side opening 5. In the following description, the arrow A direction in the figure is referred to as the cylinder axis direction of the movable valve body 2, and the arrow B direction in the figure is referred to as the cylinder axis direction of the movable valve element 2. The movable side valve body 2 has a shaft portion 11 connected to one end portion in the cylinder axis direction, and the shaft portion 11 is connected to a motor 13 housed in a motor case 12 attached to one end portion of the fixed side valve body 3. The movable valve body 2 can be rotated around the cylinder axis by the rotational drive of the motor 13. Here, the motor 13 is housed in the motor case main body 12a and housed in the motor case 12 by covering the lid 12b. The cylindrical movable valve body 2 opens at the other end of the movable valve body 2 in the cylinder axis direction, and this opening serves as a fluid inlet 2b. The internal hollow portion 3b of the fixed side valve body 3 that houses the movable side valve body 2 is covered with a movable valve body restraint 14 attached to the other end portion of the fixed side valve body 3, so that the movable side valve body 3 is covered. The fluid inlet 2 b of the body 2 is communicated with a water supply side passage 15 provided in the movable valve body restraint 14. Further, three fixed side openings 5 provided in the fixed side valve body 3 are provided side by side around the cylinder axis at the same position in the cylinder axis direction. Specifically, the pair of fixed side openings 5a are disposed adjacent to each other, and the other fixed side openings 5b are disposed apart from the pair of fixed side openings 5a.

  Specifically, the movable side valve body 2 of the present example is provided with a large-diameter portion 6 in contact with the inner peripheral wall 3a of the fixed side valve body 3 around the cylinder axis at the center in the cylinder axis direction. Small-diameter portions 7 that form a clearance S for reducing friction between the inner peripheral wall 3a of the fixed-side valve body 3 are provided at both ends in the direction. The gap width of the gap S is preferably 0.3 to 0.7 mm. A movable opening 4 is formed in the large diameter portion 6 of the movable valve body 2. In other words, the flow path control valve 1 of this example is provided with the clearance S for reducing friction between the outer peripheral wall 2a of the movable side valve body 2 and the inner peripheral wall 3a of the fixed side valve body 3. The frictional resistance with the valve body 3 is reduced, and the movable side valve body 2 can be smoothly rotated. Moreover, since the movable side opening 4 is formed in the large diameter part 6 which contacts the inner peripheral wall 3a of the fixed side valve element 3 provided in the movable side valve element 2, the movable side opening 4 is surrounded by the large diameter part 6 from the periphery. Thus, water leakage from between the movable side opening 4 and the fixed side opening 5 communicated with each other can be prevented. Further, since the large diameter portion 6 is provided around the cylinder axis of the movable side valve body 2, the movable side valve body 2 does not rattle within the internal hollow portion 3b of the fixed side valve body 3. It is possible to rotate around. The movable valve body 2 is formed by providing the large diameter portion 6 at the center of the movable valve body 2 in the cylinder axis direction and providing the small diameter portions 7 at both ends of the movable valve body 2 in the cylinder axis direction. Therefore, in the intermediate product of the movable-side valve body 2 formed to have the same outer diameter as the large-diameter portion 6, the large-diameter portion 6 and the small-diameter portion 7 are formed by scraping the outer peripheral walls 2a at both ends in the cylinder axis direction. The movable valve body 2 can be obtained, that is, the movable valve body 2 can be obtained with good manufacturability.

  The large diameter portion 6 is formed with a dust removal groove 8 extending in the cylinder axis direction so as not to communicate with the movable side opening 4. Strictly speaking, there is a minute gap between the outer surface of the large-diameter portion 6 of the movable side valve element 2 and the inner peripheral wall 3a of the fixed side valve element 3 for the movable side valve element 2 to rotate. Even if dust enters, the dust can be removed by the dust removal groove 8 formed in the large diameter portion 6 in the cylinder axis direction, so that the movable valve body 2 can be smoothly rotated. It is possible to ensure. Here, the dust removal groove 8 is formed in a V shape in plan view, that is, an inclined portion that inclines in one direction around the cylinder axis with the central portion of the large diameter portion 6 in the cylinder axis direction as a boundary. 8a is formed. Therefore, the dust that has entered between the outer surface of the large-diameter portion 6 of the movable valve body 2 and the inner peripheral wall 3a of the fixed valve body 3 is rotated when the movable valve body 2 rotates around its cylinder axis. Along the inclined portion of the groove, the movable side valve body 2 can be quickly discharged into the friction reducing gap S on both sides in the cylinder axis direction.

  The flow path control valve 1 having the above-described configuration can be used for a bathtub apparatus such as a jet bath apparatus 16 as shown in FIG. The jet bath device 16 has a circulation path 20 extending from a suction port 18 provided in the bathtub 17 to a discharge port 19. The pump 21 disposed in the circulation path 20 sucks bath water from the suction port 18, and the circulation path 20. 20 is an apparatus that causes the bath water sucked in to include air by an air supply unit provided at 20 and discharges the bath water sucked in from the discharge port 19 to the bathtub 17 together with air. The jet bath device 16 can massage the bather N by applying the bath water discharged from the discharge port 19 to the bather N bathed in the bathtub 17. In the jet bath device 16 of FIG. 19 is provided at a plurality of locations in the bathtub 17 so as to follow the body of the bather N, and the circulation path 20 is bifurcated downstream of the pump 21. A valve 1 is provided, and each flow path control valve 1 further branches the circulation path 20 to reach each discharge port 19. Here, in the flow path control valve 1, the fluid inlet 2 b of the movable valve body 2 is communicated with a circulation path 20 extending from the pump 21, and a pair of fixed-side openings 5 a arranged adjacent to each other are communicated with one discharge port 19. The other fixed side opening 5b apart from the pair of fixed side openings 5a communicates with the other discharge ports 19. Specifically, the discharge port 19 includes a sole discharge port 19a that applies bathing water to the bather N's sole, a lower leg discharge port 19b that applies bathing water to the lower leg of the bather N, and bathing water N The thigh discharge port 19c is applied to the thigh, and the back discharge port 19d is used to apply the bath water to the back of the bather N. One flow control valve 1a has a pair of fixed side openings 5a. The other fixed side opening 5b is communicated with the crus discharge port 19b and the other flow path control valve 1b is communicated with the back discharge port 19d. The other fixed side opening 5b communicates with the thigh discharge port 19c. The sole 23 and the back discharge port 19d through which the pair of fixed openings 5a communicate with each other are provided with nozzles 23 that cross and discharge the bath water flowing through the pair of fixed openings 5a. Each flow control valve 1 and pump 21 are controlled by a control unit 24.

  Here, in the flow path control valve 1, when the movable side valve element 2 is driven to rotate about its cylinder axis by the motor 13, the movable side opening 4 is sequentially communicated with the three fixed side openings 5. At this time, since the pair of fixed side openings 5a are disposed adjacent to each other, the movable side opening 4 that rotates is in communication with only one of the pair of fixed side openings 5a. A state of communicating with both of the fixed side openings 5a and a state of communicating with only the other fixed side opening 5 of the pair of fixed side openings 5a are successively and sequentially generated. In a state in which the movable side opening 4 communicates with only one fixed side opening 5 of the pair of fixed side openings 5a, bath water is discharged from the nozzle 23 in the direction of arrow a, and the movable side opening 4 has a pair of In a state where both the fixed side openings 5a communicate with each other, the bath water discharged from the nozzles 23 collide with each other, and as a result, the bath water is discharged in the direction of the arrow b, so that the movable side opening 4 has a pair of fixed sides. In a state where only the other fixed side opening 5 of the openings 5a communicates, bath water is discharged from the nozzle 23 in the direction of the arrow c. In other words, the bath water swings and can be discharged at the discharge port (foot discharge port 9a and back discharge port 9d) through which the pair of fixed side openings 5a communicate (see arrow d).

  Thus, when the flow path control valve 1 of this example is used for a bathtub apparatus such as the jet bath apparatus 16, the following advantages can be provided. That is, in the flow path control valve 1, as described above, water leakage does not occur between the fixed side opening 5 and the movable side opening 4 that are in communication with each other, so that the bath water is discharged from each discharge port without loss. be able to. Further, as described above, in the flow path control valve 1, the movable side valve element 2 can rotate without rattling and the friction between the rotating movable side valve element 2 and the fixed side valve element 3 is reduced. The jet bath device 16 that must be disposed in a relatively narrow portion between the bathtub 17 and the apron can be saved in space. Furthermore, bath water containing dust such as sebum of the bather N flows through the flow path control valve 1, and the flow path control valve 1 is connected to the outer surface and the fixed side of the large diameter portion 6 of the movable valve body 2. Although the dust is likely to enter between the inner peripheral wall 3a of the valve body 3 and is used under adverse conditions, the dust is removed by the groove 8 provided in the large diameter portion 6 of the movable valve body 2. It is possible to eliminate from the space between the outer surface of the large diameter portion 6 and the inner peripheral wall 3a of the fixed side valve body 3, that is, the flow path control valve 1 suppresses the occurrence of failure due to dust and the durability of the jet bath device 16. It can contribute to improvement of sex.

  7 to 9 show other examples of the embodiment of the present invention. Since the flow path control valve 1 of this example is an example in which a part of the flow path control valve 1 of the previous example is changed, portions common to the flow path control valve 1 of the previous example are denoted by the same reference numerals and description thereof is omitted. The above changes will be mainly described.

  The flow path control valve 1 of this example is formed such that the outer diameter of the movable valve body 2 is smaller than the inner diameter of the fixed valve body 3 as shown in FIGS. A protruding rib portion 9 is provided on the outer peripheral wall 2a of the movable valve body 2 so as to be in contact with the inner peripheral wall 3a of the fixed valve body 3. The projecting rib portion 9 is formed in a long shape in the cylinder axis direction of the movable valve body 2 and provided with a plurality of strips around the cylinder axis of the movable valve body 2, and the cylindrical shaft of the movable valve body 2. It is composed of a plurality of vertical ribs 9b which are formed long around and provided with a plurality of strips in the cylinder axis direction of the movable valve body 2. A movable side opening 4 is formed in the outer peripheral wall 2a of the movable side valve element 2 surrounded by the horizontal rib 9a and the vertical rib 9b. More specifically, since the outer diameter of the movable valve body 2 is smaller than the inner diameter of the fixed valve body 3, the outer peripheral wall 2a of the movable valve body 2 and the inner peripheral wall of the fixed valve body 3 as shown in FIG. A clearance S for reducing friction is formed between the terminal 3a and 3a. Further, the plurality of lateral ribs 9 a are provided so as to project from substantially symmetrical positions around the cylinder axis on the outer peripheral wall 2 a of the movable valve body 2. The lateral rib 9a of this example is formed on the outer peripheral wall 2a of the movable valve body 2 so as to extend over the entire length in the cylinder axis direction, and is shifted by about 90 degrees around the cylinder axis on the outer peripheral wall 2a of the movable valve body 2 Is provided. Further, in this example, the plurality of vertical ribs 9b are formed so as to extend over the entire circumference of the outer peripheral wall 2a of the movable side valve body 2, and the movable side valve body 2 in the cylinder axis direction is sandwiched between the movable side openings 4. It is provided at two positions. The width of the horizontal rib 9a and the vertical rib 9b is preferably about 1 to 2 mm. The horizontal ribs 9a and the vertical ribs 9b intersect with each other substantially vertically to form a lattice-shaped protruding rib portion 9. That is, when the movable valve body 2 is arranged in the inner hollow portion 3 b of the fixed valve body 3, the protruding rib portion 9 is provided between the inner peripheral wall 3 a of the fixed valve body 3 and the outer peripheral wall 2 a of the movable valve body 2. A divided gap space is formed. The movable-side opening 4 is formed at a portion of the outer peripheral wall 2a of the movable-side valve element 2 that is surrounded at least by the horizontal rib 9a and the vertical rib 9b without any gap (that is, facing the sealed gap space).

  According to this flow path control valve 1, since the outer diameter of the movable valve body 2 is smaller than the inner diameter of the fixed valve body 3, the movable valve body 2, the outer peripheral wall 2 a, and the inner peripheral wall 3 a of the fixed side valve body 3. A clearance S for reducing friction (that is, the above-mentioned clearance space) is formed between the movable valve body 2 and the frictional resistance with the fixed side valve body 3 is reduced, so that the movable side valve body 2 rotates smoothly. Has been made possible. Further, since the movable side opening 4 is surrounded by the vertical ribs 9b and the horizontal ribs 9a of the protruding rib portion 9 contacting the inner peripheral wall 3a of the fixed side valve body 3 provided in the movable side valve body 2, the communication is made Water leakage from between the movable side opening 4 and the fixed side opening 5 thus made can be prevented. Further, since the protruding rib portion 9 has a plurality of lateral ribs 9a that are formed in the direction of the cylinder axis of the movable side valve element 2 and are provided around the cylinder axis of the movable side valve element 2, the movable side valve element 2 is It is possible to rotate around the cylinder axis without rattling in the internal hollow portion 3b of the stationary valve body 3. Further, the projecting rib portion 9 has a longitudinal rib 9b formed in a long length around the cylinder axis of the movable side valve body 2 and provided in a plurality of strips in the cylinder axis direction of the movable side valve body 2, so that the movable side valve body 2 is It will contact the inner peripheral wall 3a of the fixed side valve element 3 over the cylinder axis direction, that is, the contact balance in the cylinder axis direction of the movable side valve element 2 to the inner peripheral wall 3a of the fixed side valve element 3 is also good. Therefore, it is possible to further suppress the rattling in the internal hollow portion 3b of the fixed side valve body 3 of the movable side valve body 2. More specifically, in the flow path control valve 1 of the previous example, the large-diameter portion 6 formed in a belt shape having a width larger than the width of the movable side opening 4 is fixed over the entire circumference of the outer peripheral wall 2a of the movable side valve element 2. Although it was in contact with the inner peripheral wall 3a of the side valve body 3, in the flow path control valve 1 of this example, the lattice-shaped protruding rib portion 9 provided on the outer peripheral wall 2a of the movable side valve body 2 is fixed side valve body. In this example, the contact area between the outer surface of the movable valve body 2 that rotates and the inner surface of the fixed valve body 3 can be reduced in comparison with the previous example, and the movable valve body 2 can be reduced. The rotating operation can be performed more smoothly, and the possibility that dust enters between the outer surface of the movable valve body 2 and the inner surface of the fixed valve body 3 that are in contact with each other is reduced.

  FIG. 9 shows still another example of the embodiment of the present invention. The flow path control valve 1 of this example is formed so that the outer diameter of the movable valve body 2 is smaller than the inner diameter of the fixed valve body 3. Protrusions 10 that are in contact with the outer peripheral wall 2a of the movable valve body 2 are provided on the inner peripheral wall 3a of the fixed valve body 3 on the entire circumference or are provided in a plurality in the circumferential direction. The protrusion 10 surrounds the periphery of the fixed side opening 5. Specifically, the protrusion 10 of this example is formed in the shape of a long rib extending in the direction of the central axis (coaxial with the cylinder axis of the movable valve body 2) of the inner peripheral wall 3a of the fixed valve body 3. In the inner peripheral wall 3a of the side valve body 3, a plurality of positions are provided at substantially symmetrical positions around the central axis (specifically, positions shifted by about 90 degrees around the central axis). One fixed-side opening 5 is positioned between each protrusion 10, and each fixed-side opening 5 is separated by the protrusion 10. That is, when the movable valve body 2 is arranged in the internal hollow portion 3 b of the fixed valve body 3, the protrusion 10 is divided between the inner peripheral wall 3 a of the fixed valve body 3 and the outer peripheral wall 2 a of the movable valve body 2. A gap space is formed.

  According to this flow path control valve 1, since the outer diameter of the movable valve body 2 is formed smaller than the inner diameter of the fixed valve body 3, the outer peripheral wall 2 a of the movable valve body 2 and the inner peripheral wall 3 a of the fixed side valve body 3. A clearance S for reducing friction (that is, the above-mentioned clearance space) is formed between the movable valve body 2 and the frictional resistance with the fixed side valve body 3 is reduced, so that the movable side valve body 2 rotates smoothly. Has been made possible. Further, since the periphery of the fixed side opening 5 is surrounded by the protrusion 10 that is in contact with the outer peripheral wall 2a of the movable side valve body 2 provided on the inner peripheral wall 3a of the fixed side valve body 3, the movable side opening 4 communicated with the fixed side Water leakage from the opening 5 is prevented. Further, since the protrusions 10 are plurally provided in the circumferential direction of the inner peripheral wall 3 a of the fixed side valve body 3, the movable side valve body 2 is a cylinder without rattling in the internal hollow portion 3 b of the fixed side valve body 3. It is possible to rotate around the axis. In addition, the protrusion 10 of this example is a long rib extending in the direction of the central axis (coaxial with the cylinder axis of the movable valve body 2) of the inner peripheral wall 3a of the fixed valve body 3, like the horizontal rib 9a of the previous example. The rib (the width of the rib is about 1 to 2 mm), and the inner peripheral wall 3a of the fixed-side valve body 3 is provided with a plurality of spaces at substantially symmetrical positions around its central axis. A grid-like projection 10 may be formed by adding a projection 10 provided over the entire circumference of the inner peripheral wall 3a of the fixed-side valve body 3 like the vertical rib 9b of the previous example, In this case, since the rotating movable valve body 2 can contact the inner peripheral wall 3a of the fixed valve body 3 in the circumferential direction, the movable valve body 2 is moved by the internal hollow portion 3b of the fixed valve body 3. Furthermore, it becomes possible to rotate around the cylinder axis without rattling.

DESCRIPTION OF SYMBOLS 1 Flow path control valve 2 Movable side valve body 2a Outer peripheral wall 2b Fluid inlet 3 Fixed side valve body 3a Inner peripheral wall 3b Internal hollow part 4 Movable side opening 5 Fixed side opening 6 Diameter large part 7 Diameter small part 8 Groove for dust removal 9 Protruding rib portion 9a Horizontal rib 9b Vertical rib 10 Protruding portion

Claims (2)

  A movable side opening serving as a fluid outlet is formed in the outer peripheral wall of a cylindrical movable valve body having a fluid inlet for allowing fluid to flow inside, and a plurality of fixed parts are fixed to the inner peripheral wall of the fixed side valve body having an internal hollow portion. A side opening is formed, and the movable side valve element is rotatably mounted in the inner hollow portion of the fixed side valve element, and the movable side valve element is rotated around its cylinder axis to selectively move the movable side opening to the fixed side opening. The flow path control valve is configured to communicate with the movable side valve element so that the outer diameter of the movable side valve element is smaller than the inner diameter of the fixed side valve element, and the outer peripheral wall of the movable side valve element is in contact with the inner peripheral wall of the fixed side valve element. A rib portion is provided, and the protruding rib portion is formed long in the cylinder axis direction of the movable side valve body, and a plurality of ribs are provided around the cylinder axis of the movable side valve body, and the cylinder shaft of the movable side valve body It is formed with a plurality of vertical ribs that are formed around the periphery and provided in a plurality of strips in the cylinder axis direction of the movable valve body. Flow passage control valve, characterized in that the formation of the dynamic side opening. A movable side opening serving as a fluid outlet is formed in the outer peripheral wall of a cylindrical movable valve body having a fluid inlet for allowing fluid to flow inside, and a plurality of fixed parts are fixed to the inner peripheral wall of the fixed side valve body having an internal hollow portion. A side opening is formed, and the movable side valve element is rotatably mounted in the inner hollow portion of the fixed side valve element, and the movable side valve element is rotated around its cylinder axis to selectively move the movable side opening to the fixed side opening. The flow path control valve is configured to communicate with an outer diameter of the movable side valve element smaller than an inner diameter of the fixed side valve element, and a protrusion that contacts the outer peripheral wall of the movable side valve element with the inner peripheral wall of the fixed side valve element. A flow path control valve characterized in that a portion is provided on the entire circumference or spaced apart in the circumferential direction, and the periphery of the fixed side opening is surrounded by a protrusion.

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