JP2016003762A - Flow regulating valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flow regulating valve which inhibits water from leaking from a location other than an outlet after ice melts even when the water is frozen in a water cutoff state.SOLUTION: A flow regulating valve includes: a casing (110); a valve body (200); a metal plate (300) which is provided at a part of an outer peripheral surface of the valve body (200), is rotated with the valve body (200), and closes a first through hole (132) when the valve body (200) is rotated from a rotation position in which the first through hole (132) and second through holes (202A, 202B) communicate with each other; and a seal member (140) which is attached to the casing (110) and presses the metal plate (300) to the valve body (200) when the metal plate (300) closes the first through hole (132).

Description

  The present invention relates to a flow control valve.

  2. Description of the Related Art Conventionally, a flow rate adjusting valve that is attached to, for example, a flow channel through which fluid flows and adjusts the flow rate of the fluid flowing through the flow channel is known (see, for example, Patent Document 1). This flow control valve has a structure in which a valve body having a communication hole is rotatably held inside a valve guide (casing) formed with an outlet, and the valve body is rotated to rotate the outlet and the communication hole. It is a mechanism that discharges water by making the communication, and adjusts the flow rate with this communication amount.

  In this regard, Patent Document 2 discloses a valve in which a rotary drive body is provided in a cylinder (casing) forming a flow path, an elastic sheet is attached to the entire circumference of the rotary drive body, and the elastic drive seat is closely attached to the inner wall of the cylinder. A body flow regulating valve is disclosed.

JP 2008-215626 A Japanese Utility Model Publication No. 6-23803

  However, in the configuration described in Patent Document 2, when water in the casing is frozen in a water stop state in which the flow rate from the outlet is zero due to rotation of the valve body, the volume of ice increases and pressure is applied to the valve body and the casing. It takes. In this case, in addition to the entire circumference of the inner wall of the valve body, the inner circumference of the casing is subjected to a stress that tends to spread. In many cases, the valve body is configured so as not to be broken in order to receive water pressure when the water stops. As a result, a part of the cylinder may be destroyed before the valve body and water may leak from a place other than the outlet. Usually, the outflow hole of the flow control valve is connected to the water outlet of the water discharger. Usually, the water discharging apparatus is provided toward the bowl or sink for receiving the water discharged from the water outlet. Therefore, when water leaks from the outlet of the flow control valve, water leaks from a place such as a bowl or sink that is supposed to receive water, whereas water leaks from other locations. However, there was a problem that water spouted out to the place not intended by the installer, causing damage to the furniture and the house itself.

  Then, this invention is made | formed in order to solve the subject mentioned above, and provides the flow regulating valve which can suppress leaking from places other than an outflow port, even when water freezes in a water stop state. Is one of the purposes.

  In view of the above examination results, the flow rate adjusting valve according to the first aspect of the present invention is rotatably held in a cylindrical casing in which a first through hole penetrating the circumferential surface is formed, and in the casing. A valve body in which one end side is closed, a second through-hole penetrating the peripheral surface is formed, and the communication amount of the first through-hole and the second through-hole is changed by being rotated; Provided on a part of the outer peripheral surface of the valve body, rotated together with the valve body, and when the valve body is rotated from a rotation position where the first through-hole and the second through-hole communicate with each other, the first A metal plate that closes the through-hole, and a seal member that is attached to the casing and presses the metal plate against the valve body when the metal plate closes the first through-hole.

  In this configuration, when the flow rate adjustment valve is arranged so that the first through-hole overlaps the outlet of the flow path through which water flows, water flows into the valve body from the other open end and communicates with each other. Water flows out to the outlet of the flow path through the first through-hole and the second through-hole. When the valve body is rotated from the rotation position where the first through hole and the second through hole communicate with each other, the metal plate rotates together to close the first through port, and the seal member presses the metal plate against the valve body. . As a result, the metal plate can receive the water flowing into the valve body and stop the outflow of water to the outlet.

  In this state, that is, in the water stop state of the flow regulating valve, when water flowing in the valve body freezes, the volume of water increases and pressure is applied by the metal plate. When a certain level of pressure is applied to the metal plate, the metal plate is deformed to the outlet side, forming a gap communicating with the valve body between the seal member and the valve body, reducing the stress on the casing and preventing the casing from being destroyed. can do. Further, even when such deformation occurs, water flows out from the outlet through the gap described above, so that it is possible to prevent water leakage from places other than the outlet.

As described above, according to the above configuration, even when water is frozen in the water stop state, it is possible to suppress leakage from a place other than the outlet.
In the above configuration, it is assumed that the flow rate adjusting valve is arranged so that the first through-hole is on the outlet side of the flow path through which water flows. A flow rate adjusting valve may be arranged to be on the side.

  In the flow regulating valve according to a second aspect of the present invention, in the first aspect, the part is a recess formed in the valve body, the metal plate is inserted into the recess, and an end of the metal plate Is sandwiched between the casing and the valve body.

  According to this configuration, since the metal plate is inserted into the recess, the metal plate can be fixed in the axial direction of the valve body, and at least the end portion of the metal plate can be connected to the casing even if the valve body rotates. Since it is pinched | interposed between valve bodies, a metal plate can be fixed also to the radial direction of a valve body. Therefore, the metal plate can be fixed without using an adhesive.

  In the flow regulating valve according to the third aspect of the present invention, in the first aspect or the second aspect, the valve body is made of resin.

  According to this configuration, the shape of the opening on the other end side of the valve body can be easily complicated (for example, a fin shape or the like), and sound at the time of throttling can be reduced. Moreover, according to this structure, manufacturing cost can be suppressed compared with the case where a valve body is comprised with a metal.

  In the flow regulating valve according to the fourth aspect of the present invention, in the first to third aspects, the valve body is formed integrally with the valve body and the cylindrical valve body that is held inside the casing. And a rotating shaft having at least one end projecting to the outside of the casing.

  According to this structure, since a rotating shaft can also be manufactured simultaneously with a valve body main body, manufacturing cost can be suppressed.

  According to a fifth aspect of the present invention, there is provided the flow rate adjusting valve according to the fourth aspect, wherein the retaining ring is provided in the casing, the retaining shaft is inserted into the casing and the retaining shaft is rotatably held in the casing, and the retaining ring. And a restricting portion that protrudes from the retaining ring to a handle that engages with the rotation shaft and restricts the rotation angle of the handle.

  In this configuration, even if the user applies an excessive force to rotate the handle, a regulating portion that regulates the rotation angle of the handle by the user is provided on a retaining ring separate from the casing. Excessive force acts on the reinforcing member and does not act directly on the casing. Therefore, according to the said structure, a casing can be destroyed by excess force and it can suppress that a water leak generate | occur | produces.

  In the flow regulating valve according to the sixth aspect of the present invention, in the fifth aspect, the reinforcing member and the restricting portion are formed of a single metal plate.

  According to this configuration, since the reinforcing member and the restricting portion are formed of a single metal plate, the force relating to the restricting portion can be efficiently received by the reinforcing member, and the strength of the entire flow rate adjusting valve can be improved. Can do.

  In the flow control valve according to a seventh aspect of the present invention, in the sixth aspect, the casing is provided with a retaining ring that is provided in the casing, the rotating shaft is inserted, and the casing rotatably holds the rotating shaft. The retaining ring, the reinforcing member, and the restricting portion are formed of a single metal plate.

  According to this configuration, since the retaining ring, the reinforcing member, and the restricting portion are formed of a single metal plate, it is possible to manufacture them simultaneously, reducing the number of parts and suppressing the cost. I can do it.

  According to the flow regulating valve of the present invention, even when water is frozen in a water stop state, it is possible to suppress water leakage from a place other than the outlet after the ice melts.

It is a front view of the water stop cock in which the flow regulating valve concerning a 1st embodiment of the present invention was provided inside. FIG. 2 is an outline development view of the water stop cock shown in FIG. 1. It is a general-view figure when the handle shown in FIG. 2 is seen from the other end part side of the attaching part. It is AA arrow sectional drawing of the water stop cock shown in FIG. It is the general-view perspective view which looked at the flow regulating valve shown in FIG. 4 from arbitrary directions. It is the general-view perspective view which looked at the flow regulating valve shown in FIG. 5 from the opposite side. FIG. 7 is an overview (for example, a plan view) when the flow rate adjusting valve shown in FIGS. 5 and 6 is viewed from the outside in the axial direction. FIG. 3 is an overview development view of the flow regulating valve shown in FIG. 2. It is DD sectional view taken on the line of the flow regulating valve shown in FIG. It is the elements on larger scale of the water stop cock shown in FIG. 4, Comprising: It is a figure explaining the effect | action of the flow regulating valve which concerns on this embodiment. It is a figure explaining the effect | action of the flow regulating valve which continues from FIG. 10A. It is an external view expanded view of the flow regulating valve concerning a 2nd embodiment.

  Hereinafter, a flow rate adjustment valve according to an embodiment of the present invention will be specifically described with reference to the drawings.

[First Embodiment]
<Structure of the stop cock>
FIG. 1 is a front view of a stop cock 10 in which a flow rate adjustment valve according to a first embodiment (hereinafter referred to as “this embodiment”) of the present invention is provided. FIG. 2 is a schematic development view of the water stop cock 10 shown in FIG.

  As shown in FIG. 1, the stop cock 10 is connected to a water supply pipe supplied from a water supply source (not shown), and stops flowing out of the water stop cock 10 flowing in from the water supply pipe. It is for adjusting the flow rate of the outflow.

  The stop cock 10 includes a handle 12 and a stop cock body 14.

  In addition to the above, as shown in FIG. 2, the stop cock 10 includes a first attachment ring 16, a second attachment ring 18, and a flow rate adjustment valve 100 according to the present embodiment.

  A handle 12 as a rotation operation member is held and rotated by a user of the water stop cock 10. The rotation of the handle 12 adjusts the flow rate of water flowing out of the water stop cock 10. The handle 12 includes a grip portion 12A and an attachment portion 12B.

  The grip portion 12A is formed in a rod shape with a size that can be gripped by the user. The grip portion 12A protrudes from the outer peripheral surface of the attachment portion 12B, for example, in a substantially horizontal direction. In addition, although the holding part 12A and the attachment part 12B are formed as separate bodies, they may be formed integrally.

  The attachment portion 12B is formed in a cylindrical shape. A screw hole 12 </ b> C and a lid opening 12 </ b> D are provided at one end of the attachment portion 12 </ b> B toward the outside. The screw hole 12C is smaller than the lid opening 12D and penetrates to the other end of the attachment portion 12B. A screw 12E for fixing the handle 12 and the flow rate adjusting valve 100 (knob 214) is inserted into the screw hole 12C from the lid opening 12D side. A lid 12F is fitted into the lid opening 12D so as to cover the inserted screw 12E.

  FIG. 3 is a schematic view of the handle 12 shown in FIG. 2 when viewed from the other end side of the mounting portion 12B.

  As shown in FIG. 3, the first opening 12H is provided at the other end of the attachment portion 12B.

  A circular surface 12G is provided behind the first opening 12H in FIG. From the center of the circular surface 12G, a cylindrical portion 12I protrudes toward the front side of FIG.

  When viewed from the front side of the sheet of FIG. 3, the cylindrical portion 12I is connected to the first protrusion 12J having a substantially arc shape (more specifically, substantially C-shaped) and both ends of the first protrusion 12J. A substantially arc-shaped second protrusion 12K. The second projecting portion 12K has a projecting length smaller than that of the first projecting portion 12J, and is on the back side in FIG. A second opening 12L is provided at the center of the front end surface of the cylindrical portion 12I, and the above-described screw hole 12C is further provided on the back side of FIG.

  Returning to FIG. 2, the first mounting ring 16 is inserted and fitted into the mounting portion 12 </ b> B from the first opening 12 </ b> H, and the second mounting ring 18 is fitted into the first mounting ring 16. . Thereafter, the flow rate adjusting valve 100 is inserted into the insertion port 14B opened at the distal end surface of the fitting convex portion 14A formed in the water stopcock main body 14. Further, the knob 214 of the flow rate adjusting valve 100 is further inserted from the opening 12G of the mounting portion 12B and is fitted into the second opening 12L, and the fitting convex portion 14A is inserted into the second mounting ring 18 and fitted. Furthermore, the screw 12E is inserted from the screw hole 12C on the lid 12F side and screwed into the knob 214. As a result, as shown in FIG. 4, the attachment portion 12 </ b> B is rotatably attached to the water stopcock main body 14.

  FIG. 4 is a cross-sectional view of the water stopcock 10 shown in FIG. In FIG. 4, hatching is omitted.

  As shown in FIGS. 1 and 4, the stop cock body 14 includes a first pipe 14 </ b> C and a second pipe 14 </ b> D.

  The first tube 14C extends, for example, in a substantially vertical direction. One end of the first pipe 14C is connected to a water supply pipe supplied from a water supply source. As shown in FIG. 4, a first inlet 20 is formed at one end surface of the first pipe 14 </ b> C, and water flows from the water supply pipe through the first inlet 20. The first inlet 20 communicates with a first flow path 22 formed inside the first pipe 14C.

  In the first flow path 22, water flowing from the first inlet 20 flows in the direction of arrow B. For example, a circular first outlet 24 is provided on the inner wall of the first pipe 14 </ b> C, which is the tip of the first flow path 22 in the direction of water flow. The first outlet 24 communicates with the first flow path 22 and has a smaller diameter than the diameter of the first flow path 22. An arrangement space 26 for a flow rate adjusting valve 100 according to the present embodiment, which will be described later, is formed inside the other end of the first pipe 14C that is the tip of the first outlet 24.

  A second outlet 28 is formed on the peripheral wall of the other end of the first pipe 14C where the arrangement space 26 is located. The second outlet 28 is communicated with or disconnected from the first outlet 24 by the flow rate adjusting valve 100.

  From the outer peripheral surface of the first pipe 14C surrounding the second outlet 28, the second pipe 14D projects obliquely downward. The outer diameter of the second pipe 14D is set smaller than the outer diameter of the first pipe 14C, for example.

  A second flow path 30 communicating with the first flow path 22 and the second outlet 28 is formed inside the second pipe 14D. In the second flow path 30, the water that flows in from the second outlet 28 flows in the direction of arrow C. A third outflow port 32 is provided at the front end surface of the second pipe 14 </ b> D, which is the front end portion of the second flow path 30 in the water flow direction. The 3rd outflow port 32 may be exposed outside and may be connected to another flow path.

  Although the flow rates of water exiting from the second outlet port 28 and the third outlet port 32 are the same, these flow rates are adjusted by the flow rate adjusting valve 100 arranged in the arrangement space 26.

<Configuration of Flow Control Valve 100>
Next, the configuration of the flow rate adjustment valve 100 will be described.

  FIG. 5 is a schematic perspective view of the flow regulating valve 100 shown in FIG. 4 as viewed from an arbitrary direction. FIG. 6 is a schematic perspective view of the flow regulating valve 100 shown in FIG. 5 as viewed from the opposite side. FIG. 7 is a schematic view (for example, a plan view) when the flow regulating valve 100 shown in FIGS. 5 and 6 is viewed from the outside in the axial direction. FIG. 8 is a schematic development view of the flow regulating valve 100 shown in FIG. 9 is a cross-sectional view of the flow rate adjusting valve 100 shown in FIG. In FIG. 9, hatching is not shown.

  As shown in FIGS. 5 to 7, the flow rate adjusting valve 100 is formed in, for example, a substantially cylindrical shape. The flow rate adjusting valve 100 is provided in a placement space 26 that communicates with a flow path through which water flows, for example, the first flow path 22 in FIG. 4, and adjusts the flow rate of the fluid flowing in the placement space 26.

  As shown in FIG. 8, the flow rate adjustment valve 100 mainly includes a casing 110, a seal member 140, a pressing member 160, a retaining ring 180, a valve body 200, and a metal plate 300.

  The casing 110 is a casing of the valve body 200 and a guide member. The casing 110 is made of a resin such as PPS (polyphenylene sulfide). The shape of the casing 110 is, for example, a substantially cylindrical shape.

  One end surface 112 of the casing 110 is provided with a circular insertion port 114 into which the valve body 200 is inserted. The diameter of the insertion port 114 is substantially the same as the inner diameter of the casing 110.

  As shown in FIG. 9, the other end surface 116 of the casing 110 has a circular penetration through which a part of the valve body 200 (such as a knob 214) inserted from the insertion port 114 penetrates the other end and is exposed to the outside. A mouth 118 is provided. The through hole 118 is disposed at the center of the other end surface 116. The diameter of the through hole 118 is made smaller than the inner diameter of the casing 110 so that the entire valve body 200 does not penetrate the through hole 118.

  Further, as shown in FIG. 7, the other end surface 116 is provided with a first surface portion 116 </ b> A and a second surface portion 116 </ b> B around the through-hole 118.

  The shape of the first surface portion 116A is, for example, a substantially C shape when viewed from the outside in the axis O (see FIG. 9) direction of the casing 110. The first surface portion 116A is formed flat except for a not-shown hole. A retaining ring 180 described later is disposed on the first surface portion 116A.

  Between the one end and the other end of the first surface portion 116A that face each other, a second surface portion 116B that connects the one end and the other end protrudes straight from the first surface portion 116A outward in the axis O direction.

  The shape of the second surface portion 116B is, for example, a substantially fan shape when viewed from the outside in the axis O direction. The second surface portion 116B is formed flat except for the lightening hole 116C. Further, the second surface portion 116B can be brought into contact with both ends of the substantially C-shaped retaining ring 180 on both side surfaces in the circumferential direction. As a result, even if the casing 110 attempts to rotate clockwise or counterclockwise with respect to the axis O direction as the valve body 200 inserted into the casing 110 rotates, the second surface portion 116B contacts the retaining ring 180. Therefore, relative rotation between the casing 110 and the retaining ring 180 is restricted.

  A side surface 120 </ b> A of the claw portion 120 protrudes from the center outer periphery of the second surface portion 116 </ b> B toward the radially outer side of the casing 110.

  As shown in FIG. 5, the claw portion 120 similarly protrudes radially outward from the end portion on the other end surface 116 side of the outer peripheral surface 122 of the casing 110 on the side surfaces other than the side surface 120 </ b> A. The shape of the nail | claw part 120 is the substantially U shape open | released to the insertion port 114 side, for example, when it sees from the radial direction outer side. As shown in FIG. 2, the claw portion 120 is fitted into a first concave portion 14 </ b> E provided in the fitting convex portion 14 </ b> A of the first tube 14 </ b> C. Thereby, even if the valve body 200 rotates, the casing 110 is not rotated at the same time because the rotation of the casing 110 is restricted by the claw portion 120.

  Returning to FIG. 5, when removing the flow rate adjustment valve 100 from the stop cock 10, it can be easily removed by hooking a minus screwdriver on the claw 120. In particular, when the flow control valve 100 is made compact, it is difficult to pull the flow control valve 100 from the stop cock 10 by pinching the knob 214 by hand. It becomes easy to perform maintenance by removing the valve 100. The claw portion 120 may have a mouth shape when viewed from the outside in the radial direction, for example, but it is preferable that the claw portion 120 has a substantially U shape as shown in FIG. By making it substantially U-shaped, the part in the direction of removal can be made thicker, so that it becomes difficult to chip when it is removed by hooking with a flathead screwdriver.

  An O-ring 124 is attached to the outer peripheral surface 122 closer to the insertion port 114 than the claw portion 120.

  As shown in FIG. 9, the O-ring 124 is mounted by fitting in a groove 126 formed on the entire circumference of the outer peripheral surface 122. Thereby, the watertightness of the water stop cock 10 and the flow control valve 100 can be maintained, and water leakage from the insertion port 14B shown in FIG. 2 can be prevented.

  In the central portion of the outer peripheral surface 122 on the insertion port 114 side of the O-ring 124 in the axial O direction, one through port 130 that penetrates from the outer peripheral surface 122 to the inner peripheral surface 128 is formed. Has been. The shape of one through-hole 130 is, for example, a substantially square shape when viewed from the radially outer side of the casing 110. On the outer peripheral surface 122 facing the one through-hole 130, the other through-hole 132 is formed as a first through-hole penetrating the peripheral surface. The shape of the other through-hole 132 is also, for example, a substantially square shape when viewed from the radially outer side of the casing 110.

  A portion of the outer peripheral surface 122 around the other through-hole 132 is a recessed portion 134 that is recessed by one step as compared with other portions of the outer peripheral surface 122. On the outer periphery of the recessed portion 134, a further recessed groove portion 136 is provided. A sealing member 140 that covers and surrounds a part of the other through-hole 132 is fitted into the recess 134 from the outside in the radial direction.

  As shown in FIG. 8, the seal member 140 is, for example, a plate-like packing that is bent along the outer peripheral surface 122 of the casing 110. The seal member 140 has a through-hole 142 that penetrates in the plate thickness direction.

  Returning to FIG. 9, the through-hole 142 is made smaller than the other through-hole 132 and is disposed inside the other through-hole 132. A first protrusion 144 protrudes from the edge of the through-hole 142, that is, from the inner periphery of the back plate surface of the seal member 140 toward the out-of-plane direction.

  The first protrusion 144 is a ring body having a square shape when viewed from the front, and has a rounded tip. The first protrusion 144 protrudes inward from the inner peripheral surface 128 of the casing 110 by fitting into the other through-hole 132 of the casing 110. As a result, the first protrusion 144 abuts on the metal plate 300 when a metal plate 300 described later closes the other through-hole 132, and presses the metal plate 300 against the valve body 200.

  Further, a second protrusion 146 protrudes from the outer periphery of the back plate surface of the seal member 140 toward the out-of-plane direction so as to surround the first protrusion 144. The second protrusion 146 is a ring body having a square shape when viewed from the front, and the protrusion length is shorter than that of the first protrusion 144. The second protrusion 146 is fitted in the groove 136 of the casing 110. As a result, the seal member 140 is not easily detached from the casing 110.

  Further, the presser protrusion 148 protrudes toward the inside of the through-hole 142 from a part or the entire circumference of the through-hole 142 of the seal member 140.

  A presser member 160 that covers and surrounds a part of the through hole 142 is fitted into the through hole 142. When the presser member 160 is fitted, a part of the presser member 160 exceeds the presser protrusion 148, so that the presser member 160 is not easily detached by the presser protrusion 148. When the pressing member 160 is removed from the seal member 140, it can be removed by hooking a minus driver into a recess (not shown) formed on the outer periphery of the pressing member 160.

  The pressing member 160 is, for example, a plate-like member that is bent along the outer peripheral surface 122 of the casing 110. The pressing member 160 has a through-hole 162 that penetrates in the plate thickness direction.

  The through hole 162 is smaller than the through hole 142 of the seal member 140 and is disposed inside the through hole 142. R is attached to the valve body side inner peripheral end 163 of the through-hole 162. Thereby, it is trying to make water flow smooth as a curved surface.

  By providing the pressing member 160, not only in the direction in which the water flow direction flows from the through hole 142 of the seal member 140 into the valve body 200, but also in the direction of water flow in the direction in which the water flows from the valve body 200 to the through hole 142 of the seal member 140 In addition, the flow regulating valve 100 can be easily used. That is, by using the pressing member 160, the seal member 140 is not detached from the valve body 200 even when water is passed through the other through-hole 132 of the valve body 200. And watertightness can be reliably maintained at the time of water stop. By providing the pressing member 160 as described above, it is only necessary to attach the sealing member 140 from the side only to the other through-hole 132 side, so that the number of parts can be reduced. In addition, compactness is facilitated.

  A retaining ring 180 is provided above the pressing member 160. The retaining ring 180 is inserted in the rotating shaft 210 of the valve body 200 and holds the rotating shaft 210 in the casing 110 rotatably.

  As shown in FIG. 7, the retaining ring 180 is disposed on the first surface portion 116 </ b> A of the casing 110. The retaining ring 180 has substantially the same shape as the first surface portion 116A so as to cover the first surface portion 116A. That is, the retaining ring 180 is substantially C-shaped when viewed from the outside in the axis O direction.

  As shown in FIG. 8, the retaining ring 180 has projecting portions 182 </ b> A and 182 </ b> B that project from the inner periphery of both distal ends of the substantially C shape toward the center so as to sandwich the valve body 200. Similarly, the retaining ring 180 has a projecting portion 182C that projects from the inner circumference of the substantially C-shaped rear side to the center side.

  A claw portion 184 projects from the outer periphery of the retaining ring 180 facing the projecting portion 182C. The shape of the nail | claw part 184 is a substantially L shape by side view. As shown in FIG. 2, the claw portion 184 fits into the second concave portion 14 </ b> F provided in the fitting convex portion 14 </ b> A of the first tube 14 </ b> C, as with the claw portion 120. Thereby, even if the valve body 200 rotates, the casing 110 is not rotated at the same time because the rotation is restricted by the claw portion 184.

  Here, the outer diameter of the retaining ring 180 is substantially the same as the outer diameter of the other end surface 116 of the casing 110 except for the claw portion 184. Further, the inner diameter of the retaining ring 180 is substantially the same as or larger than the diameter of the through-hole 118 of the casing 110 except for the overhang portions 182A to 182C. With this configuration, the casing 110 is damaged by contact between the second mounting ring 18 and the retaining ring 180 when the casing 110 is subjected to stress that protrudes in the direction of the axis O due to water flow. It can be reinforced so as to suppress.

  Returning to FIG. 8, the stopper 186 protrudes from the one surface (front surface) of the retaining ring 180 toward the handle 12 (see FIG. 2) on which the rotating shaft 210 is fitted. The stopper 186 is formed integrally with the retaining ring 180. That is, the stopper 186 and the retaining ring 180 are formed of one plate, for example, a metal plate.

  The stopper 186 is for restricting the operation angle of the handle 12. Specifically, as shown in FIG. 3, the stopper 186 enters a space facing the second protrusion 12 </ b> K provided on the handle 12 attached to the rotating shaft 210 of the valve body 200, and is more than the second protrusion 12 </ b> K. The operation angle of the handle 12 is regulated by coming into contact with the high first protrusion 12J. Thereby, the rotation angle of the valve body 200 is indirectly regulated.

  As shown in FIGS. 8 and 9, the stopper 186 has a substantially fan shape surrounded by concentric circles (two in total) having the same angle (acute angle) and two radii passing through both ends. It is preferable. As a result, the rotation of the rotating shaft 210 can be restricted by making contact with the surface of the stopper 186 in the radial direction so that the contact area can be increased, so that the rotation can be reliably restricted.

  The valve body 200 regulated by such a stopper 186 is formed with a first outer peripheral groove 212 into which the protruding portions 182A to 182C of the retaining ring 180 provided with the stopper 186 are fitted. As described above, the retaining ring 180 is fitted into the first outer circumferential groove 212 so that the valve body 200 does not come out of the insertion port 114 after assembly. As a result, the valve body 200 is held inside the casing 110. At this time, since the retaining ring 180 is firmly fitted in the first outer circumferential groove 212, the retaining ring 180 rotates simultaneously with the rotation operation of the rotating shaft 210. Therefore, the valve body 200 is held rotatably with respect to the casing 110.

  The first outer peripheral groove 212 is provided on the rotating shaft 210.

  The valve body 200 includes the rotating shaft 210 and the valve body main body 230. Such a valve body 200 has a cylindrical shape with one end side closed, and as shown in FIG. 9, two through holes 202A and 202B as second through holes penetrating the peripheral surface are formed and rotated. By this, it is a resin-made valve body from which the communication amount of the other through-hole 132 and through-hole 202A, 202B changes.

  The rotary shaft 210 of the valve body 200 is formed integrally with the valve body main body 230. At least one end of the rotating shaft 210 protrudes outside the casing 110. Specifically, the portion from the tip of the rotating shaft 210 to the first outer peripheral groove 212 is exposed to the outside. The shape of the rotating shaft 210 is, for example, a substantially cylindrical shape with one end closed. The outer diameter of the rotating shaft 210 is smaller than that of the valve body 230. The inner diameter of the rotating shaft 210 is substantially the same as or slightly larger than the outer diameter of the screw 12E so that the screw 12E enters inside. In addition, the axis of the rotating shaft 210 and the valve body 230 is the same as the axis O of the casing 110. Therefore, hereinafter, the axis of the rotating shaft 210 and the valve body 230 is also referred to as an axis O.

  The first outer circumferential groove 212 is provided on the outer circumferential surface on the other end side of the central portion of the rotating shaft 210 in the axis O direction. Further, on this outer peripheral surface, a knob 214 is formed on the front end side with the first outer peripheral groove 212 interposed therebetween, and a second outer peripheral groove 216 is formed on the other end side.

  The knob 214 is a tip portion of the rotating shaft 210, for example, a portion in which a part of the outer periphery of the rotating shaft 210 is scraped flat in the direction of the axis O. A circular opening 217 is formed at the center of the tip surface of the knob 214. By inserting the screw 12E inserted into the screw hole 12C from this opening 217 and screwing it with the knob 214, the knob 214 and the handle 12 are fixed.

  The second outer peripheral groove 216 is in the other end portion of the rotating shaft 210. The width of the second outer peripheral groove 216 is larger than that of the first outer peripheral groove 212. The depth of the second outer peripheral groove 216 is substantially the same as the depth of the first outer peripheral groove 212. An O-ring 218 is attached to the second outer circumferential groove 216. Thereby, the watertightness of the casing 110 and the rotating shaft 210 is maintained, and water leakage from the through hole 118 is suppressed.

  The other end of the rotating shaft 210 is connected to the valve body 230.

  The valve body 230 is substantially cylindrical and is held inside the casing 110.

  One end surface of the valve body 230 is closed. An opening 232 communicating with the inside is provided on the other end surface of the valve body 230.

  As shown in FIG. 4, when installed in the stop cock 10, water flows into the opening 232 from the first flow path 22 in communication with the first outlet 24.

  Returning to FIGS. 8 and 9, the two through-holes 202 </ b> A and 202 </ b> B described above are formed on the circumferential surface on one side of the valve body 230. The shapes of the through holes 202A and 202B are substantially convex when viewed from the radially outer side of the valve body 230, for example. These through-holes 202A and 202B are bottom portions and face each other in the axis O direction.

  A substantially circular through-hole 234 is formed at the central portion in the axis O direction on the other peripheral surface of the valve body 230 facing the through-holes 202A and 202B.

  A recess 236 is formed on the other peripheral surface of the valve body main body 230 including the through hole 234. The shape of the recess 236 is a substantially rectangular shape that is long in the direction of the axis O, for example, when viewed from the radial outside of the valve body 230. The bottom surface of the recess 236 is along the peripheral surface of the valve body 230.

  The metal plate 300 is inserted and fitted into the recess 236 from the outside in the radial direction.

  The metal plate 300 is provided on a part of the peripheral surface (recess 236) of the valve body 230, and is rotated together with the valve body 200. The first through holes are closed when the through holes 202A and 202B) are rotated from the rotational position where they communicate. At this time, the metal plate 300 is pressed against the valve body 230 by the first protrusion 144 of the seal member 140.

  The shape of the metal plate 300 is, for example, a substantially rectangular shape that is long in the direction of the axis O when viewed from the radially outer side of the valve body 230. The metal plate 300 is curved along the bottom surface of the recess 236. The thickness of the metal plate 300 is substantially the same as the depth of the recess 236, for example. The material of the metal plate 300 may be any metal as long as it has a certain degree of strength and corrosion resistance to tap water. For example, various types of stainless steel, various types of copper alloys such as brass, and the like are preferably used. It is possible. The pressure strength of the metal plate 300 is set lower than the pressure strength of one end surface of the valve body 230, for example.

  The entire circumferential end of the metal plate 300 is sandwiched between the casing 110 and the valve body 230.

<Action>
Next, the operation of the flow rate adjustment valve 100 according to this embodiment will be described.

  10A and 10B are partially enlarged views of the water stop cock 10 shown in FIG. 4 and are diagrams for explaining the operation of the flow regulating valve 100 according to the present embodiment.

  When the flow rate adjusting valve 100 having the configuration described above is arranged so that the other through-hole 132 overlaps the second outlet 28, water W flows into the valve body 200 from the opening 232 on the other end side. Then, although not shown, it flows out to the second outlet 28 through the other through-hole 132 and the through-holes 202A, 202B communicating with each other. 10A, when the valve body 200 is rotated from the rotation position where the other through-hole 132 and the through-holes 202A and 202B communicate with each other, the metal plate 300 is rotated together so that the other through-hole 132 is moved. The sealing member 140 presses the metal plate 300 against the valve body 200. As a result, the metal plate 300 receives the water W flowing inside the valve body 200, and the outflow of the water W to the second outlet 28 is stopped.

  In this state, that is, in the water stop state of the flow regulating valve 100, when the water W flowing inside the valve body 200 is frozen, the volume of the water W increases and pressure is applied by the metal plate 300. As shown in FIG. 10B, when a certain pressure higher than a normal water stop state is applied to the metal plate 300, the metal plate 300 is deformed to the outlet side, and the portion pressed by the seal member 140 is peeled off from the seal member 140. As a result, a gap V communicating with the inside of the valve body 200 is formed between the seal member 140 and the valve body 200. After the ice melts, the water W inside the valve body 200 passes through the gap V to the other side. From the through-hole 132 to the second outlet 28.

As described above, according to the above configuration, even when the water W is frozen in the water stoppage state, it is possible to suppress water leakage from a place other than the second outlet 28 after the ice melts.
In the above configuration, it is assumed that the flow regulating valve 100 is arranged so that the other through-hole 132 is on the second outflow port 28 side. For example, the other through-hole 132 is on the first outflow port 24 side. The flow regulating valve 100 may be arranged so as to be.

  Further, as shown in FIG. 9, since the metal plate 300 is inserted into the recess 236 of the valve body 200, the metal plate 300 can be fixed in the axial direction of the valve body 200. Furthermore, since at least the end of the metal plate 300 is sandwiched between the casing 110 and the valve body 200 even when the valve body 200 rotates, the metal plate 300 is also fixed in the radial direction of the valve body 200. Can do. Therefore, the metal plate 300 can be easily held without using a snap fit or a screw. Further, when the valve body 200 made of resin and the metal plate 300 are intended to be fixed by snap fitting or the like, the valve body 200 may be scraped off. However, this problem can also be avoided in the above configuration.

  Further, when the valve body 200 is made of resin, the shape of the opening 232 on the other end side of the valve body 200 can be easily complicated to have a rectifying action (for example, a fin shape), and the sound at the time of throttling can be obtained. Can be reduced. Moreover, when the valve body 200 is comprised with resin, a manufacturing cost may be suppressed compared with the case where the valve body 200 is comprised with a metal.

  Moreover, since the valve body 200 and the rotating shaft 210 are integrally formed in the valve body 200, the rotating shaft 210 is also manufactured at the same time as the valve body main body 230, so that the manufacturing cost is suppressed.

  In addition, even if the user applies excessive force to rotate the handle 12, a stopper 186 that restricts the rotation angle of the handle 12 by the user is provided on the retaining ring 180 separate from the casing 110. The excessive force acts on the retaining ring 180 and does not act directly on the casing. Therefore, destruction of the casing 110 due to excessive force is suppressed. Furthermore, in the unlikely event that an excessive force is applied that causes the stopper 186 to be destroyed, the retaining ring 180 need only be destroyed, and water leakage due to the destruction of the casing 110 is suppressed.

  Further, since the retaining ring 180 and the stopper 186 are formed of one metal plate, the number of parts is small, and the retaining ring 180 and the stopper 186 are manufactured at the same time, so that the manufacturing cost is suppressed.

[Second Embodiment]
Next, a flow regulating valve according to a second embodiment of the present invention will be specifically described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the member same as this embodiment, and description is abbreviate | omitted.

  FIG. 11 is an overview development view of the flow regulating valve according to the second embodiment.

  As shown in FIG. 11, the second embodiment includes a retaining ring 181, a retaining ring 181, and a reinforcing member 183 that is a separate member, instead of the retaining ring 180 in the first embodiment. The retaining ring 181 has a substantially C-shape when viewed from the outside in the axis O direction, while the reinforcing member 183 has a substantially O-shaped donut shape when viewed from the outside in the axis O direction. The reinforcing member 183 reinforces the end surface of the casing 110.

  The reinforcing member 183 includes claw portions 185A and 185B at positions facing each other on the outer periphery thereof. The claw portion 185A and the claw portion 185B are fitted in the fitting concave portion 14E and the fitting concave portion 14F, respectively, in the fitting convex portion 14a of the first tube 14C. Since it is fitted in two places, even if the valve body 200 rotates, the rotation of the casing 110 can be firmly regulated.

  The reinforcing member 183 has a locking hole 189 penetrating the plate thickness on the surface thereof, and the locking protrusion 111 provided on the other end surface 116 of the casing 110 is inserted into the locking hole 189. Thus, positioning is performed with respect to the casing 110. Further, the reinforcing member 183 has a through-hole 187 at the center thereof, and the rotating shaft 210 is inserted into the through-hole 187, and a retaining ring 181 is attached to the rotating shaft 210 in this state. As a result, the flow regulating valve 100 is assembled.

  By forming the reinforcing member 183 and the retaining ring 181 separately, the reinforcing member 183 can have a substantially donut shape, and the strength of the reinforcing member 183 itself can be improved. In addition, the locking claws 185A and 185B can be provided at opposing positions, and even when the reinforcing member 183 is subjected to a rotating force, it can be received in two places in a distributed manner. . As a result, even when the handle 12 is operated to the limit position and an excessive force is applied to the stopper 186, the possibility that the casing 110 is destroyed can be reduced.

[Modification]
As mentioned above, although embodiment of the technique which this application discloses was described, the technique which this application discloses is not limited above.

  For example, the case where the water W flows into the inside of the valve body 200 from the opening 232 has been described. However, the opening 232 is blocked, and an opening is provided on the peripheral surface of the valve body 200 so that the water W is supplied from the opening. It may be allowed to flow in. Further, the water W may flow from the opening 232 as well as the opening.

  Although the case where the valve body 200 is made of resin has been described, it may be made of metal or other materials. However, it is preferable that the valve body 200 is made of a resin from the viewpoint of manufacturing cost, ease of manufacturing, and the like.

  Moreover, although the case where the metal plate 300 was rectangular shape was demonstrated, square shape, round shape, a triangular shape, etc. may be sufficient. Further, the through hole 234 can be omitted. Also, the recess 236 can be omitted. When the recess 236 is omitted, the metal plate 300 may be bonded to the valve body 230 with an adhesive or the like.

  Moreover, although the case where the retaining ring 180 was comprised with the metal was demonstrated, you may comprise with other materials, such as resin.

  The elements included in each of the embodiments described above can be combined as much as technically possible, and combinations thereof are also included in the scope of the present invention as long as they include the features of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Stop cock 12 ... Handle 100 ... Flow control valve 110 ... Casing 112 ... One end surface 114 ... Insertion port 122 ... Outer peripheral surface (peripheral surface)
132 ... the other through-hole (first through-hole)
140: Seal members 180, 181 ... Retaining ring 186 ... Stopper (regulator)
183 ... Reinforcing member 200 ... Valve body 202A ... Through port (second through port)
202B ... Through-hole (second through-hole)
210 ... Rotating shaft 230 ... Valve body 236 ... Recess 300 ... Metal plate

Claims (7)

A cylindrical casing formed with a first through-hole penetrating the peripheral surface;
A cylindrical shape that is rotatably held in the casing and closed at one end side is formed with a second through-hole penetrating the peripheral surface, and is rotated to rotate the first through-hole and the second through-hole. A valve body with variable mouth communication,
Provided in a part of the outer peripheral surface of the valve body, rotated together with the valve body, and the first through hole when the valve body is rotated from a rotation position where the first through hole and the second through hole communicate with each other. A metal plate that closes the mouth,
A seal member attached to the casing and pressing the metal plate against the valve body when the metal plate closes the first through hole;
A flow control valve comprising: The part is a recess formed in the valve body;
The metal plate is inserted into the recess;
The end of the metal plate is sandwiched between the casing and the valve body,
The flow regulating valve according to claim 1. The valve body is made of resin.
The flow regulating valve according to claim 1 or 2. The valve body includes a cylindrical valve body main body that is held inside the casing, and a rotating shaft that is integrally formed with the valve body main body and at least one end projects to the outside of the casing.
The flow regulating valve according to any one of claims 1 to 3. A reinforcing member that is provided in the casing, and in which the rotating shaft is inserted to reinforce an end surface of the casing;
A restricting portion that is provided on the reinforcing member and protrudes from the reinforcing member to a handle that engages with the rotation shaft to restrict the rotation angle of the handle;
The flow regulating valve according to claim 4, further comprising: The reinforcing member and the restricting portion are formed of a single metal plate.
The flow regulating valve according to claim 5. Provided in the casing, provided with a retaining ring in which the rotating shaft is inserted and rotatably holding the rotating shaft in the casing;
The retaining ring, the reinforcing member and the restricting portion are formed of a single metal plate,
The flow regulating valve according to claim 6.

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