JP5059883B2 - Metal switching cock - Google Patents

Description

  The present invention relates to a metal switching cock, and more particularly to a metal switching cock that performs a valve switching operation between two water discharge modes of a raw water discharge mode (raw water straight water discharge mode) and a purified water discharge mode.

  Conventionally, as this type of technology, for example, there is a technology described in Patent Document 1. Patent Document 1 discloses a ceramic disk switching valve used with a water treatment device. The switching valve includes a movable disk that is sandwiched between two fixed disks. The movable disk rotates between a first position for discharging the untreated water stream straightly, a second position for shower discharging the untreated water stream, and a third position for discharging the treated water stream. Is done. When the treated water is discharged, the switching valve causes a water flow to flow from the secondary outlet toward the water treatment device, the treated water returns to the switching valve via the secondary inlet, and is discharged from the switching valve via the treated water outlet. The At the time of discharging untreated water, both the secondary inlet and the secondary outlet are watertightly blocked by the ceramic disk. (See ABSTRACT in the official gazette)

US Patent Application No. 2002/0148516 (Publication)

  In order to solve the problem that the conventional spool type switching valve is large and its O-ring has a relatively short life (see paragraph 0006 of the publication), the switching valve described in Patent Document 1 is as described above. It is assumed that the structure of a ceramic disk type switching valve having a simple structure is adopted (see paragraph 0007 of the publication).

  On the other hand, the ceramic disk type switching valve is shown in FIG. As is clear from 1, since the total number of parts increases, the overall structure becomes complicated and the cost may be relatively high. Furthermore, depending on the accuracy of each part, the operation may become unstable, and when various parts become unusable due to wear or the like due to wear, the replacement may be troublesome. .

  Therefore, the present invention can reduce the total number of parts to make the whole structure relatively simple and relatively low cost, and particularly secure sufficient strength around the switching parts. A metal switching cock that exhibits high operational stability, can easily perform valve switching operations, and can easily replace switching components when necessary. The issue is to provide

A metal switching cock according to claim 1 includes a metal main body. The main body has a first water inlet, a first water outlet, a second water inlet and a second water outlet, and the first water inlet, the first water outlet, the second water inlet and the second water outlet. A hollow shape having an internal space communicating with each of the two water outlets. In the internal space of the main body, a first valve seat is provided in the middle of the first flow path that communicates the first water inlet and the first water outlet. In the internal space of the main body, a second valve seat is provided in the middle of the second flow path that connects the first water inlet and the second water outlet. The first valve seat and the second valve seat are provided, for example, on a plane extending in the axial direction of the first flow path. In addition, the first valve seat and the second valve seat are provided on a plane extending substantially orthogonal to a portion of the second flow path extending in the axial direction of the second water outlet, for example. A switching member is attached to the main body. The switching member has a shaft portion and a valve body. The shaft portion is disposed so as to extend along a third flow path connecting the first valve seat and the second valve seat in the internal space of the main body. The shaft portion extends, for example, so as to be coaxial with the third flow path. The valve body is fixed to the tip of the shaft portion. The switching member can be switched between the first valve position and the second valve position. In the first valve position, the shaft portion is linearly reciprocated along the third flow path by rotating the shaft portion forward and backward in the circumferential direction thereof, and the first valve body moves the first portion. And the second valve seat is closed. At this time, the valve body maintains the communication of the first flow path, allows water to flow from the first water flow inlet to the first water flow outlet, and blocks the communication of the second flow path. The communication of the second flow path is cut off, and the flow of water from the first water flow inlet to the second water flow outlet is cut off. In the second valve position, the valve body closes the first valve seat and opens the second valve seat. At this time, the valve body maintains the communication of the second flow path to allow water to flow from the first water flow inlet to the second water flow outlet, and blocks the communication of the first flow path. The flow of water from the first water inlet to the first water outlet is blocked. As described above, the metal switching cock is made of a metal body, and the overall strength is increased by switching the valve position as described above by rotating the shaft portion of the switching member forward and backward. On the other hand, stable valve switching operation can be achieved even by repeated use, and the life can be extended. Preferably, the main body is integrally formed by forging into a predetermined hollow shape having a first valve seat and the like inside using a forging metal such as forging brass as a material, thereby switching the valve by a switching member. The strength of the mechanism portion can be greatly increased.

In the metal switching cock according to the first aspect, the main body further includes a metal mounting portion. The attachment portion is disposed on the opposite side across the second water outlet and the internal space. In the main body, the first valve seat and the second valve seat are arranged along the diameter direction of the main body connecting the second water outlet and the mounting portion. That is, the first valve seat and the second valve seat are arranged so as to be coaxial with the second water outlet and the attachment portion. The switching member has a metal handle attached by screwing to the attachment portion. Further, the switching member has the base end of the shaft portion attached to the handle. The base end of the shaft portion is detachably fixed to the center portion of the inner surface of the handle, for example, by press fitting or screwing.

In the metallic selector valve according to the present invention, the mounting portion (the one the male screws) multiple-thread screw (double thread and Sanjo screws, including anything having two or more strips of the screw) forming Then both , the said handle may also be formed multi-start screws (other becomes a female screw) of multi-start screw screwed to the mounting portion. In addition, the lead of the multi-thread screw has the valve body of the switching member when the handle of the switching member is rotated by a predetermined angle (for example, a predetermined angle within a range of about 200 degrees to about 220). Between the second valve seat position and the second valve seat position (from the first valve seat position to the second valve seat position or from the second valve seat position to the first valve seat position) Is set to the value to be For example, the mounting portion is arranged on the opposite side of the main body in the radial direction, that is, at a position away from the main body by an angle of 180 degrees so as to be substantially coaxial with the second water inlet and project outward from the main body. Established. Further, the attachment portion can be configured to have, for example, a cylindrical shape that is coaxial with the second water outlet and has a screw portion (female screw or male screw) on the inner peripheral surface or the outer peripheral surface. Preferably, when the main body is integrally formed with the main body when forging the main body with the forging metal as described above, the attachment portion can be greatly improved in strength and can greatly contribute to the improvement in the strength of the switching valve mechanism. Similarly, the shaft portion and the valve body of the switching member are preferably made of metal in order to improve the strength of the switching valve mechanism. In this way, the handle is made small (by a factor of 1 / twice of the number of threads of the multiple threads with respect to the single threads) by using a multiple thread such as a double thread instead of a single thread as the handle screwing structure to the mounting portion. By rotating the rotation member by a rotation angle (for example, in the case of a double thread, it is only rotated at a rotation angle that is half that of a normal single thread), the switching member is moved to the first valve seat position and the second valve seat position. Can be rotated and switched between, and the switching operation of the valve position by rotating operation can be facilitated and accelerated by that amount (by the magnification according to the number of strips), and can be performed smoothly and quickly. There is no need to turn it twice.

In the metal switching cock according to a first aspect of the present invention, the main body is arranged at a position that is approximately 180 degrees apart from the second water outlet. Further, a cylindrical nipple is formed separately from the main body and is detachably attached to the second water outlet of the main body. The base end of the shaft portion of the switching member is detachably attached to the handle, and the valve element has a disk shape smaller in diameter than the diameter of the second water outlet. By removing the nipple from the second water outlet of the body, the shaft portion and the valve body (e.g., an integral state) to move in the axial direction to be separated from the handle, said body The shaft can be removed from the second water outlet to the outside, and the shaft and the valve body are inserted (for example, in an integrated state) from the second water outlet of the main body and moved in the axial direction toward the handle. By doing so, the base end of the shaft portion is fitted to the handle to be freely attached. Thus, the main part (shaft part and valve body) of the switching valve mechanism can be easily attached and detached, and the O-ring or the like as a sealing member attached to the valve body is worn with the valve switching operation for a long period of time. Even if it becomes necessary to replace the O-ring, etc., it is easy to replace the O-ring as a consumable part and continue to use the switching cock with the same operational stability and reliability as before. Can be achieved.

According to a second aspect of the present invention, in the metal switching cock according to the first aspect, the metal main body is integrally formed so as to be formed of an integral metal body by forging and to have a flow path therein. Is. The main body is formed, for example, by forming the outline of the flow path by forging and then finishing by post-processing. As a result, the main body has no inconvenience such as the components such as the first flow path P1 in the main body are damaged due to external force and decomposed. That is, the main body is formed by forging the outline of the first flow path and the like, and finally, only a part of the surface is finished by post-processing such as cutting or drilling to form each flow path and the like. Yes. Therefore, there is no inconvenience such as the components such as the first flow path in the main body are damaged due to external force and decomposed.

According to a third aspect of the present invention , in the metal switching cock according to the first or second aspect, the shaft portion of the switching member further includes the third flow connecting the first valve seat and the second valve seat. Extends coaxially with the road. The shaft portion has, for example, a cylindrical shape extending linearly. The attachment portion extends coaxially with the second water outlet and is integrally formed with the main body (preferably by forging) so as to form a cylindrical shape having a diameter substantially equal to or larger than the diameter of the second water outlet. Has been. Thereby, sufficient intensity | strength of an attaching part and a switching member is securable.

According to a fourth aspect of the present invention , in the metal switching cock according to the second or third aspect , the main body further includes a substantially cylindrical main shaft portion extending from the first water inlet to the first water outlet. doing. The attachment portion is provided on one side of the main shaft portion in the diameter direction so as to protrude in the diameter direction of the main shaft portion. The second water outlet is provided on the other side in the diametrical direction so as to have a cylindrical shape that is coaxial with the mounting portion and protrudes in the diametrical direction of the main shaft portion. The second water inflow port is provided on the first water outflow side on the other side in the diametrical direction so as to protrude in the diameter direction of the main shaft portion in parallel with the second water outflow port. Yes. For example, the second water inflow is provided on the side closer to the first water outlet than the first water inlet with the second water outlet interposed therebetween. Inside the main shaft portion, a third flow path between the first valve seat and the second valve seat on the upstream side of the first valve seat and the second valve seat in the first flow path. An upstream communication hole directly connected to the first valve seat, and a downstream communication hole directly connected to a third flow path between the first valve seat and the second valve seat on the downstream side of the first valve seat and the second valve seat Are arranged in a positional relationship such that they are positioned on the opposite side of the radial direction with the axis of the main shaft portion interposed therebetween. For example, the upstream communication hole and the downstream communication hole are staggered with the axis of the main shaft portion interposed therebetween, that is, (substantially crank-shaped or substantially Z-shaped when viewed in a cross section cut along the axis. By forging brass for forging, the main shaft portion, the mounting portion, the second water outlet, the second water inlet, the first valve seat and the first The body comprising the two valve seats is integrally formed with the above-described shape or the arrangement of each part and each space, and thus the body is forged into a predetermined shape integrally having each part and each space. The overall strength, particularly the strength of the mounting portion for mounting the switching valve mechanism, can be improved, and the operational stability and operational reliability can be greatly improved.

According to a fifth aspect of the present invention , in the metal switching cock according to the fourth aspect, the seating surface of the second valve seat is further on an axial center connecting the first water inlet and the first water outlet ( The main body is integrally formed so as to be positioned coaxially with the axis of the main shaft portion. As described above, the position of the seating surface of the second valve seat is on the axis of the main shaft portion, so that the body can be easily formed by forging or the like.

According to a sixth aspect of the present invention , in the metal switching cock according to the fifth aspect, the seat surface of the first valve seat further extends from the center of the main shaft portion to the second water outlet side by the radius of the main shaft portion. The main body is integrally formed so as to be located at a position separated from each other (a base end position of the second water outlet). As described above, the position of the seating surface of the first valve seat is set to the base end position of the second water outlet, so that it is easier to integrally form the main body by forging or the like.

According to a seventh aspect of the present invention , in the metal switching cock according to the second or third aspect , the second valve seat is integrally formed at a proximal end of the nipple, and the nipple is connected to the second water flow of the main body. It is arranged at a predetermined position by being attached to the outlet. That is, the second valve seat is not formed integrally with the main body like the first valve seat, but is formed separately from the main body and is detachably attached to the secondary outlet portion of the main body. Can be formed. As described above, when the second valve seat is formed integrally with the main body, when the second valve seat is disposed opposite to the first valve seat, the first valve is inserted through the second water outlet. It may be difficult to form the seat, and it may be difficult to take out and insert the valve body and the shaft portion of the switching member via the second water outlet. If the nipple is formed, such troubles can be completely prevented, and even if the second valve seat becomes worn due to seating of the valve body and cannot operate stably, the nipple only By exchanging them alone, it is possible to ensure the same valve switching operation as before.

In the metal switching cock according to claim 8 , in the configuration of claim 4 or 5, the outer diameter of the seating surface of the first valve seat of the main body is the same as the inner diameter of the second water outlet or It has a slightly smaller diameter. For example, the outer diameter of the seating surface of the first valve seat is slightly larger than the diameter of the large-diameter portion when the mounting portion is a stepped columnar shape including a large-diameter portion and a small-diameter portion. The inner diameter of the seating surface of the valve seat 1 is the same as the diameter of the large diameter portion of the mounting portion. In this way, when the main body is integrally formed by forging, a press portion having a corresponding diameter is inserted into the internal space of the main body from the second water outlet, and the seating surface of the first valve seat is easily forged. can do.

A metal switching cock according to a ninth aspect includes a metal main body. The main body has a first water inlet, a first water outlet, a second water inlet and a second water outlet, and the first water inlet, the first water outlet, the second water inlet and the second water outlet. A hollow shape having an internal space communicating with each of the two water outlets. In the internal space of the main body, a first valve seat is provided in the middle of the first flow path that communicates the first water inlet and the first water outlet. In the internal space of the main body, a second valve seat is provided in the middle of the second flow path that connects the first water inlet and the second water outlet. The first valve seat and the second valve seat are provided, for example, on a plane extending in the axial direction of the first flow path. In addition, the first valve seat and the second valve seat are provided on a plane extending substantially orthogonal to a portion of the second flow path extending in the axial direction of the second water outlet, for example. A switching member is attached to the main body. The switching member has a shaft portion and a valve body. The shaft portion is disposed so as to extend along a third flow path connecting the first valve seat and the second valve seat in the internal space of the main body. The shaft portion extends, for example, so as to be coaxial with the third flow path. The valve body is fixed to the tip of the shaft portion. The switching member can be switched between the first valve position and the second valve position. In the first valve position, the shaft portion is linearly reciprocated along the third flow path by rotating the shaft portion forward and backward in the circumferential direction thereof, and the first valve body moves the first portion. And the second valve seat is closed. At this time, the valve body maintains the communication of the first flow path, allows water to flow from the first water flow inlet to the first water flow outlet, and blocks the communication of the second flow path. The communication of the second flow path is cut off, and the flow of water from the first water flow inlet to the second water flow outlet is cut off. In the second valve position, the valve body closes the first valve seat and opens the second valve seat. At this time, the valve body maintains the communication of the second flow path to allow water to flow from the first water flow inlet to the second water flow outlet, and blocks the communication of the first flow path. The flow of water from the first water inlet to the first water outlet is blocked. As described above, the metal switching cock is made of a metal body, and the overall strength is increased by switching the valve position as described above by rotating the shaft portion of the switching member forward and backward. On the other hand, stable valve switching operation can be achieved even by repeated use, and the life can be extended. Preferably, the main body is integrally formed by forging into a predetermined hollow shape having a first valve seat and the like inside using a forging metal such as forging brass as a material, thereby switching the valve by a switching member. The strength of the mechanism portion can be greatly increased.

In the metal switching cock according to the ninth aspect, the cylindrical nipple is formed separately from the main body and is detachably attached to the second water outlet of the main body. Further, the second valve seat is formed integrally with the proximal end of the nipple, and is arranged at a predetermined position by mounting the nipple on the second water outlet of the main body. That is, the second valve seat is not formed integrally with the main body like the first valve seat, but is formed separately from the main body and is detachably attached to the secondary outlet portion of the main body. Can be formed. As described above, when the second valve seat is formed integrally with the main body, when the second valve seat is disposed opposite to the first valve seat, the first valve is inserted through the second water outlet. It may be difficult to form the seat, and it may be difficult to take out and insert the valve body and the shaft portion of the switching member via the second water outlet. If the nipple is formed, such troubles can be completely prevented, and even if the second valve seat becomes worn due to seating of the valve body and cannot operate stably, the nipple only By exchanging them alone, it is possible to ensure the same valve switching operation as before.

According to the metal switching cock according to the present invention, the overall number of parts can be reduced to make the overall structure relatively simple, and the cost can be relatively low. In particular the intensity around the switching unit products with sufficient exhibit high operational stability, and Ru can be performed valve switching operation easily. Furthermore, if necessary, it is possible to provide a structure in which switching parts can be easily replaced.

FIG. 1 is a front view showing a metal switching cock according to an embodiment of the present invention. FIG. 2 is a rear view showing the metal switching cock according to the embodiment of the present invention. FIG. 3 is a right side view showing a metal switching cock according to an embodiment of the present invention. FIG. 4 is a left side view showing a metal switching cock according to an embodiment of the present invention. FIG. 5 is a plan view showing a metal switching cock according to an embodiment of the present invention. FIG. 6 is a bottom view showing a state where the foam inner core is removed from the secondary outlet portion of the metal switching cock according to the embodiment of the present invention. FIG. 7 is a bottom view showing a metal switching cock according to an embodiment of the present invention. FIG. 8 is a cross-sectional view showing the internal flow path by cutting the metal switching cock according to the embodiment of the present invention, and shows the positional relationship between the valve body and the valve seat and the water flow direction at the first valve position. Show. FIG. 9 is a cross-sectional view showing an internal flow path by cutting the metal switching cock according to the embodiment of the present invention, and shows the positional relationship between the valve body and the valve seat and the water flow direction at the second valve position. Show. FIG. 10 is an enlarged front view showing a double thread portion of the mounting portion while showing a state in which the handle of the switching member of the metallic switching cock according to the embodiment of the present invention is removed from the mounting portion of the main body. FIG. 11 is a partially exploded perspective view showing the state in which the nipple of the metal switching cock according to the embodiment of the present invention is removed from the secondary outlet portion of the main body as viewed from the upper right. FIG. 12 is a partially exploded perspective view showing a state where a nipple of a metal switching cock according to an embodiment of the present invention is removed from a secondary outlet portion of the main body and a valve mechanism such as a valve body inside the main body is taken out from the main body. is there. FIG. 13 is a perspective view showing the appearance of the metal switching cock according to the embodiment of the present invention as seen from the upper right (handle side). FIG. 14 is a perspective view showing the appearance of the metal switching cock according to the embodiment of the present invention as seen from the upper left (nipple side). FIG. 15 is a perspective view showing the appearance of the metal switching cock according to the embodiment of the present invention as viewed from the lower right. FIG. 16 is a perspective view showing the appearance of the metal switching cock according to the embodiment of the present invention as seen from the lower left.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 1 to 7, the metal switching cock according to the present embodiment includes a main body 10. The main body 10 includes main shaft portions 11 to 13 in which a base portion 11, a primary inlet portion 12, and a primary outlet portion 13 are integrally formed in a substantially cylindrical shape as a whole. The base portion 11 constitutes the axial center portion of the main shaft portion, the primary inlet portion 12 constitutes one axial end portion (upstream end portion) of the main shaft portion, and the primary outlet portion 13 constitutes the other axial end portion of the main shaft portion ( Downstream end). On the outer peripheral surface of the primary inlet portion 12, a fitting portion for mounting a coloring which will be described later is formed. The circular opening as the opening end of the primary inlet portion 12 constitutes a primary inlet (first water inlet) for introducing raw water. Further, a female screw for mounting a foam inner core, which will be described later, is threaded on the inner peripheral surface of the primary outlet portion 13. The circular opening as the opening end of the primary outlet portion 13 constitutes a primary outlet (first water outlet) for discharging raw water.

  On the other hand, as shown in FIGS. 8 and 9, in the main shaft portions 11 to 13, the secondary outlet portion 14 is integrally formed on one end side (upstream end side) of the base portion 11 so as to protrude orthogonally. The secondary outlet portion 14 has a short cylindrical shape, and a female screw for mounting a nipple described later is threaded on the inner peripheral surface thereof. The circular opening as the opening end of the secondary outlet portion 14 constitutes a secondary outlet (second water outlet) for supplying raw water to an external water treatment device such as a water purifier. Further, the secondary inlet 15 is integrally formed on the other end side (downstream end side) of the base 11 so as to protrude orthogonally. The secondary inlet portion 15 has a substantially short cylindrical shape with a step formed by a base end portion 15a having a large-diameter substantially cylindrical shape and a tip end portion 15b as a water inlet portion having a smaller diameter than the base end portion 15a. There is no. A small-diameter water passage hole is formed along the axial center of the base end portion 15a and the tip end portion 15b. A circular opening-shaped secondary inlet (second water inlet) serving as an opening end of the secondary inlet portion is configured by the opening end (open end of the water passage hole) of the tip portion 15b. A male screw for mounting a secondary inlet nut, which will be described later, is threaded on the outer peripheral surface of the base end portion 15a. And the front-end | tip part 15b has the same outer diameter as the internal diameter of the front-end | tip part of the water supply pipe (hose etc.) for supplying the purified water from water treatment apparatuses, such as a water purifier, and closes the front-end | tip part of a water supply pipe | tube. It can be fitted by external fitting.

  A cylindrical tertiary outlet portion 16 is integrally formed at the base end portion 15a of the secondary inlet portion 15 so as to protrude perpendicularly downward. The secondary inlet 15 and the tertiary outlet 16 are generally L-shaped as a whole, and are integrally formed with the other end (downstream end) of the base 11. The circular opening as the opening end of the tertiary outlet portion 16 constitutes a tertiary outlet (third water outlet) that discharges treated water (such as purified water from a water purifier) from the external water treatment device. Further, in the cylindrical space inside the tertiary outlet portion 16, a rectifier 16 b made of synthetic resin having a cross-shaped cross section is provided via a stainless steel strainer 16 a (disposed on the base end side). 16 are arranged to extend in the axial direction.

  A cylindrical mounting portion 17 is integrally formed on one end portion (upstream end portion) of the base portion 11 on the opposite side to the secondary outlet portion 14 (position at an angular interval of 180 degrees) so as to protrude orthogonally. ing. On the outer peripheral surface of the distal end portion of the mounting portion 17, a double thread (male screw) 17 a for attaching a handle and reciprocating in the axial direction by screwing (screwing / screwing), which will be described later, is screwed. The mounting portion 17 has a cylindrical shape with a diameter substantially the same as a nipple described later, and an inner diameter (a diameter of the cylindrical space) is smaller than an inner diameter of the secondary outlet portion 14. Further, a step is formed in the vicinity of the axial center of the cylindrical space of the mounting portion 17 so that the substantially half portion on the proximal end side of the cylindrical space is a cylindrical large diameter portion having a slightly larger diameter, and the substantially half portion on the distal end side. Is a small cylindrical portion having a slightly small diameter.

  In the main shaft portions 11 to 13, the position on the upstream end side from the secondary outlet portion 14, more specifically, the upstream position of the secondary outlet portion 14 (the boundary portion between the primary inlet portion 12 and the base portion 11) is upstream. The side partition 18 is integrally formed so as to extend in a direction orthogonal to the axial direction of the main shaft portions 11 to 13. A circular upstream communication hole 18 a is formed through one side of the upstream partition wall 18 in the radial direction (secondary outlet portion side). On the other hand, at the position on the downstream side of the secondary outlet part 14 in the main shaft parts 11 to 13, specifically, at the nearest position on the downstream side of the secondary outlet part 14 (boundary part of the base 11 and the primary outlet part 13), The downstream partition wall 19 is integrally formed to extend in a direction orthogonal to the axial direction of the main shaft portions 11 to 13 and substantially parallel to the upstream partition wall 18. On the other side in the radial direction of the downstream side partition wall 19 (on the side opposite to the secondary inlet portion), a downstream side communication hole 19a having a substantially 8 shape in which two circular shapes are continuous is formed.

  Between the one side (axial center side to center side) of the upstream communication hole 18a of the upstream partition wall 18 and the one side (axial center side to center side) of the downstream communication hole 19a of the downstream partition wall 19, One valve seat 21 is integrally formed. The first valve seat 21 is a valve seat for blocking a first flow path (primary flow path), which will be described later, and has a circular annular single-stepped seating surface. The first valve seat 21 is disposed in parallel along the axial direction of the main shaft portions 11 to 13 to the first flow path (on a plane extending in the axial direction of the first flow path). That is, the first valve seat 21 is disposed on the mounting portion 17 side in the axial direction of the cylindrical communication space that connects the secondary outlet portion 14 and the mounting portion 17. Further, the first valve seat 21 has an outer diameter larger than that of the cylindrical communication space (by the width of the circular annular step portion). Specifically, the inner diameter of the seating surface of the first valve seat 21 is the same as the diameter of the large diameter portion of the mounting portion 17, and the outer diameter is the inner diameter of the secondary outlet portion 14 (of the mounting portion 17. When the main body 10 is integrally formed by forging, a press portion (punch) having a corresponding diameter is inserted from the secondary outlet portion 14 into the internal space of the main body 10. Thus, the seating surface of the first valve seat 21 can be formed by forging.

  Between the other side (outer peripheral edge side) of the upstream side communication hole of the upstream side partition wall and the other side of the downstream side partition wall (outer peripheral edge side on the side opposite to the downstream side communication hole in the radial direction), a second valve seat 22 is provided. It is arranged. The second valve seat 22 is a valve seat for blocking a second flow path (secondary flow path), which will be described later, and has a circular annular two-stage seating surface. Further, the second valve seat 22 is arranged in parallel with the first shaft seat in parallel to the axial direction of the main shaft portions 11 to 13 through the first flow path (on the plane extending in the axial direction of the first flow path). 21 is arranged so as to extend in parallel with 21. That is, the second valve seat 22 is disposed on a plane orthogonal to the second flow path at a portion of the second flow path that is orthogonal to the first flow path. Further, the second valve seat 22 is disposed on the secondary outlet portion 14 side in the axial direction of the cylindrical communication space connecting the secondary outlet portion 14 and the mounting portion 17.

  As described above, the main body 10 is formed by integrally forming the main shaft portions 11 to 13, the secondary outlet portion 14, the secondary inlet portion 15, the tertiary outlet portion 16, and the mounting portion 17 so as to have the shape and arrangement described above. Preferably, the forging brass is integrally formed by forging the brass for forging into a shape including the above-described members or portions and the flow paths or spaces or recesses.

  On the other hand, in the present embodiment, the second valve seat 22 is not formed integrally with the main body 10 like the first valve seat 21, but is formed separately from the main body 10 so as to be secondary to the main body 10. It is integrally formed at the base end of a nipple 40 that is detachably attached to the outlet portion 14, and is arranged at the predetermined position by attaching the nipple 40 to the main body 10. Specifically, the nipple 40 as a flow path forming member for the secondary outlet has a stepped cylindrical shape (so-called nipple shape) including a base end portion 41, a central portion 42, a tip end portion 43 and a water supply portion 44. . The base end portion 41 has a cylindrical shape with the same outer diameter as the inner diameter of the secondary outlet portion 14, and a male screw that engages with a female screw on the inner peripheral surface of the secondary outlet portion 14 is formed on the outer peripheral surface thereof. Yes. Then, the male screw of the base end portion 41 of the nipple 40 is screwed into and retracted from the female screw of the secondary outlet portion 14 of the main body 10 so that the nipple 40 can be attached to and detached from the main body 10 via the O-ring R. The water tightness is maintained by the mounting and the O-ring R. Further, the central portion 42 of the nipple 40 has a cylindrical shape having a larger diameter than the base end portion 41 (the same outer diameter as the outer diameter of the secondary outlet portion 14). The outer peripheral surface is knurled for the purpose of preventing slipping. Further, the distal end portion 43 has a cylindrical shape having the same diameter as that of the proximal end portion 41, and a male screw is formed on the outer peripheral surface thereof. Moreover, the water supply part 44 has a cylindrical shape with a smaller diameter than the distal end part 43, and has the same outer diameter as that of the base end part of a water supply pipe (such as a hose) for supplying raw water to an external water treatment device such as a water purifier. It has a diameter so that the proximal end of the water supply pipe can be freely mounted.

  The second valve seat 22 has a large-diameter circular annular seating surface constituted by the base end surface of the nipple 40 and a small diameter integrally formed on the inner side of the large-diameter seating surface (inner side of the nipple 40). And a two-step stepped seating surface comprising a circular annular seating surface. The large-diameter seating surface has a circular ring shape having the same diameter (inner diameter and outer diameter) as the seating surface of the first valve seat 21, and the nipple 40 is screwed into the secondary outlet portion 14 of the main body 10 to completely By mounting, the second valve seat 22 is arranged at a predetermined position in the internal space of the main body 10, that is, at a position facing the first valve seat 21.

  A secondary outlet nut 51 is attached to the tip 43 of the nipple 40. The nut 51 has a nut shape (for so-called nipple) in which an internal thread is formed on the inner peripheral surface to be engaged with the male thread at the distal end portion 43 of the nipple 40. In a state where the water supply pipe is attached to the water supply portion 44 of the nipple 40, the nut 51 is externally fitted to the front end portion 43 of the nipple 40 and screwed in, so that the water supply pipe is connected between the nut 51 and the water supply portion 44. The proximal end portion is sandwiched and fixed. On the other hand, a secondary inlet nut 52 having the same configuration as the nut 51 is attached to the distal end portion 15 b of the secondary inlet portion 15 of the main body 10. The nut 52 has a nut shape in which an internal thread is formed on the inner peripheral surface of the main thread 10 to be engaged with the male thread of the base end portion 15 a of the secondary inlet portion 15 of the main body 10. With the water supply pipe attached to the distal end portion 15b of the secondary inlet portion 15, the nut 52 and the proximal end portion are fitted into the proximal end portion 15a of the secondary inlet portion 15 and screwed into the nut 52. The tip of the water supply pipe is sandwiched and fixed between 15a.

The internal space of the main body 10 has a first flow path P1, a second flow path P2, and a third flow path P3. The first flow path P1 constitutes a primary flow path, and extends from the primary inlet 12 to the primary outlet 13 through the upstream communication hole 18a of the upstream partition 18 and the downstream communication hole 19a of the downstream partition 19. It is a road. The second flow path P2 constitutes a secondary flow path, and passes through the upstream communication hole 18a of the upstream partition 18 from the primary inlet section 12 (so as to be orthogonal to the first flow path P1), and the secondary outlet section 14. The flow path extends to Note that the upstream side of the second flow path P2 overlaps with a part of the first flow path P1. The third flow path P3 is a space between the first valve seat 21 and the second valve seat 22 in the cylindrical communication space that connects the secondary outlet portion 14 and the mounting portion 17, A flow path connecting the first valve seat 21 and the second valve seat 22 is formed. Note that the entire third flow path P3 overlaps with a part of the first flow path P1.

  Here, a color ring 61 is detachably fitted to the primary inlet 12 of the main body 10. By attaching the coloring ring 61 to the faucet outlet through the packing 62, the switching cock is attached to the faucet in a watertight manner. A stainless steel strainer 63 is detachably disposed in the primary inlet 12 of the main body 10. On the other hand, a foam inner core 65 is attached to the primary outlet 13 of the main body 10. That is, by screwing the male screw on the outer peripheral surface of the foam inner core 65 with the female screw of the primary outlet portion 13, the foam inner core 65 is detachably attached to the primary outlet portion 13. The water discharge is designed to be foam water discharge.

  On the other hand, a switching member 70 is attached to the main body 10. The switching member 70 includes a valve member including a shaft portion 71, a valve body 72, and a fitting portion 73, and a handle 74 for operating the valve members 71 to 73. The shaft portion 71 has a stepped columnar shape including a large diameter portion 71a and a small diameter portion 71b. The large-diameter portion 71a has a cylindrical shape having the same diameter as the inner diameter of the small-diameter portion of the mounting portion 17, and an annular groove is formed at the tip portion (boundary portion with the small-diameter portion), and an O-ring is formed in the annular groove. R is attached, and the O-ring R is elastically brought into contact with the inner peripheral surface of the small diameter portion of the communication hole of the mounting portion 17 to maintain watertightness. The small diameter part 71b is a columnar shape having a smaller diameter than the large diameter part. The valve body 72 is integrally formed at the tip of the small diameter portion of the shaft portion 71. It is also possible to form the valve body 72 separately and to fix it integrally to the tip of the shaft portion 71.

  The valve body 72 has a large diameter portion 72a and a pair of small diameter portions 72b. The large-diameter portion 72a is composed of a large-diameter disk-shaped portion at the center in the axial direction of the valve body 72, and constitutes a central seating portion. The large diameter portion 72 a has the same diameter as the outer diameter of the seating surface of the first valve seat 21 and the outer diameter of the large seating surface of the second valve seat 22. The large-diameter portion 72a is seated on the large-diameter seating surface of the second valve seat 22 at a first valve position (an opening position of the first flow path and a blocking position of the second flow path) described later. The first valve seat 21 is seated on the seating surface at the second valve position (the first channel shut-off position and the second channel open position). On the other hand, each small-diameter portion 72b is a small-diameter disk-shaped portion at the base end and the distal end in the axial direction of the valve body and has a slightly smaller diameter than the large-diameter portion. In addition, the small-diameter portion 72b on the distal end side constitutes a seating portion that sits on the small-diameter seating surface of the second valve seat 22 at the first valve position. Further, each small diameter portion 72b has the same diameter and the same diameter as the inner diameter of the seating surface of the first valve seat 21 and the inner diameter of the larger diameter seating surface of the second valve seat 22. An annular groove is formed between each small diameter portion 72b and the large diameter portion 72a, and an O-ring R is attached to each annular groove. In the first valve position, the O-ring R on the distal end side of the valve body 72 is elastically applied to an annular surface (outer peripheral surface) between the large-diameter seating surface and the small-diameter seating surface of the second valve seat 22. The O-ring R on the proximal end side of the valve body 72 is attached to the mounting portion 17 at the second valve position while maintaining water tightness (blocking state of the second flow path P2) at the first valve position. The inner space of the large-diameter portion of the communication space is elastically brought into contact with the second valve position to maintain water tightness (the first channel P1 is shut off).

  Here, the diameter of the large-diameter portion of the cylindrical space of the mounting portion 17 is the same as the outer diameter of the small-diameter portion 72b on the proximal end side of the valve body 72 of the switching member 70, and the cylinder of the mounting portion 17 The diameter of the small-diameter portion of the shape space is slightly smaller than the outer diameter of the small-diameter portion 72 b of the valve body 72 of the switching member 70. The diameter of the large-diameter portion of the cylindrical space of the mounting portion 17 is slightly smaller than the outer diameter of the large-diameter portion 72a at the center of the valve body 72.

  On the other hand, as shown in FIGS. 10 to 16, the handle 74 has a bottomed cylindrical shape that is generally attached to the mounting portion 17 of the main body 10. On the inner peripheral surface of the peripheral wall of the handle 74, a double thread (female thread) 74a that engages with a double thread (male thread) 17a of the mounting portion 17 is threaded. A circular insertion hole 74b is formed through the center of the bottom wall of the handle 74, and a fitting recess 74c having a larger diameter than the insertion hole 74b is formed at the center of the inner surface of the bottom wall. It is formed to be concentric with 74b. On the other hand, the fitting portion 73 of the switching member 70 is integrally formed with the base end of the shaft portion 71. The fitting part 73 and the fitting concave part 74c of the handle 74 have the same outer shape. By fitting the fitting part 73 into the fitting concave part 74c of the handle 74 in the axial direction, the valve bodies 71 to 73 are formed. It is attached to the handle 74 so as not to rotate. A female screw is threaded on the end surface of the fitting portion 73. Then, the stop screw 75 is inserted into the insertion hole 74 b of the handle 74 and screwed into the female screw of the fitting portion 73, so that the valve bodies 71 to 73 cannot be removed from the handle 74 in the axial direction. It is fixed as follows.

  As shown by the arrow in FIG. 3, the switching member 70 rotates by rotating the handle 74 forward and backward in the circumferential direction (clockwise direction or counterclockwise direction). 71 linearly advances or retracts (reciprocates) along the third flow path P3, and between the first valve position (valve position in FIG. 8) and the second valve position (valve position in FIG. 9). The valve switching operation is performed at In the first valve position, the first valve seat 21 is opened by the valve body 72 and the second valve seat 22 is closed, and the communication of the first flow path P1 is maintained, and the primary inlet 12 is primary. While permitting the flow of water from the inlet to the primary outlet of the primary outlet portion 13 and blocking the communication of the second flow path P2, the flow of water from the primary inlet to the secondary outlet of the secondary outlet portion 14 is allowed. Cut off. On the other hand, at the second valve position, the first valve seat 21 is closed by the valve body 72 and the second valve seat 22 is opened to maintain the communication of the second flow path P2, and from the primary inlet to the second valve seat 22. While permitting the flow of water to the next outlet, the communication of the first flow path P1 is blocked, and the flow of water from the primary inlet to the primary outlet is blocked.

As shown in FIG. 10, the double thread 17a of the mounting portion 17 of the main body 10 and the double thread 74a of the handle 74 have a predetermined angle within a range of about 45 degrees to about 360 degrees with respect to the handle 74 of the switching member 70, Preferably, the valve body 72 is reciprocated between the first valve position and the second valve position by rotating forward and backward by a predetermined angle within a range of about 200 degrees to about 220 degrees. The lead (twice the pitch) is set. Specifically, the lead 1 (or pitch p) of the double thread 17a and the double thread 74a is such that when the handle 74 is rotated by a user's finger at a predetermined angle, the valve body 72 of the switching member 70 is the first valve. A value that moves linearly between the position and the second valve position (from the first valve seat position to the second valve seat position or from the second valve seat position to the first valve seat position) Is set to The double thread 17a and the lead 1 of the double thread 74a rotate the valve body 72 forward and backward by a predetermined angle within a range of about 200 degrees to about 220 degrees, which is an angle at which the handle 74 can be smoothly rotated by fingers. Most preferably, it is set to a value that reciprocates between the first valve position and the second valve position. In the example shown in FIG. 10, the double thread 17a includes a first screw thread 17a1 having a substantially trapezoidal cross section (a portion shown by shading or painting in FIG. 10) and a second screw thread having a substantially trapezoidal cross section. 17a2 (portion shown in white in FIG. 10). The first screw thread 17a1 has a rounding range from the start end to the end of over about 360 degrees. In addition, the second screw thread 17a2 has a turning range from the start end to the end of over 180 degrees. The start end position or the end position of the second screw thread 17a2 is set to a position that is rotated about 90 degrees from the start end position or the end position of the first screw thread 17a1. Accordingly, the handle 74 is rotated between the first valve position and the second valve position by rotating the handle 74 by about 1 pitch p (about 1/2 lead 1) of the double thread 17a. It can be moved forward or backward in the direction. 10 shows only the double thread 17a of the mounting portion 17, the double thread of the handle 74 has the same configuration.

  As shown in FIGS. 11 and 12, by removing the nipple 40 from the secondary outlet portion 14 of the main body 10, the shaft portion 71 and the valve body 72 of the switching member 70 can be taken out from the inside of the main body 10 to be exchanged. It has become. More specifically, when the nipple 40 is screwed out of the secondary outlet portion 14 and removed from the main body 10, access to the shaft portion 71 and the valve body 72 inside the main body 10 is achieved through the circular opening of the secondary outlet portion 14. It becomes possible. Therefore, when the set screw 75 of the handle 74 is screwed out and removed from the fitting portion 73, the fitting portion 73 is detached from the fitting recess 74c of the handle 74, and the valve body 72, the shaft portion 71, and the fitting portion 73 are removed. Can be integrally extracted from the opening of the secondary outlet portion 14. Therefore, for example, when the valve body 72, the shaft portion 71, the fitting portion 73 or the O-ring R deteriorates with use, they can be replaced with new ones to extend the product life of the switching cock. .

  The nipple 40, nuts 51 and 52, coloring ring 61, foam inner core 65, and switching member 70 (shaft portion 71, valve body 72, fitting portion 73, handle 74) are made of, for example, free-cutting brass. It is formed into the above shape by cutting.

Method of Use, Action, and Effect The metal switching cock of the present embodiment is mounted and fixed in a watertight manner to the faucet by attaching the coloring ring 61 to the water outlet of the faucet through the packing 62. In this state, when the water tap is opened and the raw water is supplied from the spout to the main body 10 of the metal switching cock, the raw water flows from the coloring 61 through the strainer 63 to the inside of the main body 10 through the primary inlet. To do. At this time, the handle 74 of the switching member 70 is rotated in the clockwise direction (for example, rotated to the right end position of the rotation angle range θ in FIG. 3) to be the first valve position. 72 is arranged at the position shown in FIG. Then, the large diameter portion 72a of the valve body 72 is seated on the large diameter seating surface of the first valve seat 21, and the small diameter portion 72b on the distal end side is seated on the small diameter seating surface of the first valve seat, and The O-ring R between them is elastically in close contact with the peripheral surface between both seating surfaces of the first valve seat 21, and the upstream side of the first valve seat 21 (first flow path P1) and Between the downstream side (the flow path in the internal space of the nipple 40 in the second flow path P2) is shut off in a watertight manner. On the other hand, a predetermined clearance space or communication space is formed between the entire valve element 72 including the proximal-side small-diameter portion 72 b and the second valve seat 22. Therefore, at this first valve position, the switching member 70 opens the first valve seat 21 by the valve body 72 and closes the second valve seat 22 to maintain the communication of the first flow path P1. Thus, the flow of water from the primary inlet of the primary inlet portion 12 to the primary outlet of the primary outlet portion 13 is allowed, and the communication of the second flow path P2 is blocked, so that the secondary inlet portion 14 is connected to the secondary outlet portion 14. Shut off the water flow to the next outlet. Thereby, the raw water from the water faucet flows from the primary inlet to the primary outlet through the first flow path P1, and is foamed and discharged by the foam core 65 in the primary outlet. Note that the first valve position is a raw water discharge mode in which the raw water is discharged straight (foam water discharge).

  On the other hand, by rotating the handle 74 of the switching member 70 counterclockwise (for example, rotating to the left end position of the rotation angle range θ in FIG. 3), the valve body is set. 72 is arranged at the position shown in FIG. Then, the large-diameter portion 72a and the small-diameter portion 72b at the tip of the valve body 72 are separated from the large-diameter seating surface and the small-diameter seating surface of the first valve seat 21, and the sealing of the first valve seat 21 by them is performed. Canceled. At the same time, the large-diameter portion 72 a of the valve body 72 is seated on the seating surface of the second valve seat 22, and the small-diameter portion 72 b on the base end side is within the peripheral surface of the large-diameter portion of the communication space of the mounting portion 17. The O-ring R disposed between them is elastically in close contact with the peripheral surface of the large-diameter portion of the communication space of the mounting portion 17, so that the upstream side of the second valve seat 22 (second flow path). ) And the downstream side (the space on the downstream side of the downstream partition wall 19 in the first flow path P1) in a watertight manner. On the other hand, a predetermined clearance space or communication space is formed between the valve body 72 and the second valve seat 22. Therefore, at this second valve position, the switching member 70 opens the second valve seat 22 by the valve body 72 and closes the first valve seat 21 to maintain the communication of the second flow path P2. In addition, the flow of water from the primary inlet of the primary inlet portion 12 to the secondary outlet of the secondary outlet portion 14 is allowed, and the communication of the first flow path P1 is blocked, and the primary outlet portion 13 Shut off the water flow to the primary outlet. As a result, the raw water from the water faucet flows from the primary inlet through the second flow path P2 to the flow path in the nipple 40 from the secondary outlet, and from the front end opening of the water supply section 44 at the front end of the nipple 40 through the water supply pipe. Water is supplied to an external water treatment device. Then, after the raw water is circulated through an external water treatment device to be treated water (purified water or the like), the raw water is again fed from the distal end opening of the distal end portion 15b of the secondary inlet portion 15 of the main body to the secondary inlet portion 15 by the water supply pipe. Flows into the interior. The treated water is further discharged from the tertiary outlet in a state of being rectified by the rectifier 16b through the strainer 16a in the tertiary outlet 16. The second valve position is a treated water discharge mode (typically a purified water discharge mode) for discharging treated water (purified water or the like).

  The metal switching cock according to the present embodiment exhibits the following specific effects. That is, the conventional metal switching cock is manufactured from metal except for a sealing material such as an O-ring, and the main body 10 constituting the main part is forged from forging brass, The structure of each space is integrally formed. On the other hand, a conventional metal switching cock is generally formed by joining a plurality of metal pieces with an adhesive to assemble each flow path having a complicated flow path shape as described above in the body of the switching cock. It is the structure to form. Therefore, in the case of the structure of the conventional metal switching cock, the metal pieces joined to each other may be damaged or decomposed by an external force. Furthermore, since all the flow paths in the main body are assembled and fixed in an inseparable manner by an adhesive or the like, they cannot be disassembled. Therefore, even if the inner part such as an O-ring (seal material) has deteriorated to the extent that it needs to be replaced, it is impossible to replace them.

  On the other hand, in the metal switching cock according to the present embodiment, the structural parts as the main parts are all made of metal, while the main body 10 is formed of an integral metal body by forging, and is the first part. The flow path P1 is provided. That is, the main body 10 forms the outline of the first flow path P1 and the like by forging, and finally finishes only a small portion of the surface by post-processing such as cutting or drilling, so that each flow path P1 and the like are processed. Forming. Therefore, there is no inconvenience such as the respective components such as the first flow path P1 in the main body 10 being damaged and disassembled by the external force. On the other hand, a nipple 40 made of metal that has undergone another manufacturing stage (cutting of free-cutting brass) is detachably attached to the secondary outlet for supplying water to the external water treatment device, and the second flow path P2. Is configured. Therefore, it is possible to replace the nipple 40 alone as the second valve seat formed on the nipple 40 is worn, and by removing the nipple 40 from the main body 10, an O-ring R which is a consumable part. Even if the performance deteriorates, the O-ring R can be easily replaced. Further, as the screw mechanism for determining the reciprocating distance of the valve body 72 of the switching member 70, the mounting portion 17 and the handle 74 are respectively formed with double threads 17a and 74a, so that the handle 74 can be rotated with a small rotation angle. Only by doing this, the valve body 72 can be smoothly and quickly switched between the first valve position and the second valve position. That is, since the double thread 17a, 74a moves in the axial direction twice or more than the normal single thread, the handle 74 is moved by a certain rotation angle in the valve opening / closing operation (flow path switching operation) by the switching valve mechanism. It is sufficient to rotate. Further, since the shaft portion 71 which is the rotation shaft of the switching valve mechanism moves back and forth in the axial direction at a relatively slow speed in accordance with the small rotation of the double thread screws 17a and 74a, the shaft portion 72 is reciprocated many times. There is almost no damage. Furthermore, by performing knurling on the outer peripheral surface of the central portion 42 of the nipple 40, the operation of attaching or removing the nipple 40 to or from the secondary outlet portion 14 is facilitated.

  The metal switching cock according to one embodiment of the present invention is a flow path of raw water between a first mode for discharging raw water and a second mode for discharging treated water from an external water treatment device such as purified water. It can be applied to various metal switching cocks for switching between.

DESCRIPTION OF SYMBOLS 10 Main body 11-13 Main shaft part 11 Base 12 Primary inlet part 13 Primary outlet part 14 Secondary outlet part 15 Secondary inlet part 15a Base end part 15b Tip part 16 Secondary outlet part 16a Strainer 16b Rectifier 17 Attachment part 17a Double thread 18 Upstream Side partition wall 18a Upstream communication hole 19 Downstream partition wall 19a Downstream communication hole 21 First valve seat 22 Second valve seat 40 Nipple 41 Base end portion 42 Central portion 43 Tip portion 44 Water supply portion 51 Nut 52 Nut 61 Coloring 62 Packing 63 Strainer 65 Foam inner core 70 Switching member 71 Shaft portion 71a Large diameter portion 71b Small diameter portion 72 Valve body 72a Large diameter portion 72b Small diameter portion 73 Fitting portion 74 Handle 74a Double thread (multiple thread)
74b Insertion hole 74c Fitting recess 75 Screw l Lead p Pitch P1 First flow path P2 Second flow path P3 Third flow path RO ring θ Rotation angle range

Claims (9)

The first water inlet, the first water outlet, the second water inlet, and the second water outlet, the first water inlet, the first water outlet, the second water inlet, and the second water stream. A hollow metal body having an internal space communicating with each of the outlets;
A first valve seat provided in the middle of a first flow path communicating the first water inlet and the first water outlet in the internal space of the main body;
A second valve seat provided in the middle of a second flow path communicating the first water inlet and the second water outlet in the internal space of the main body;
A switching member mounted on the main body,
The switching member is
A shaft portion disposed so as to extend along a third flow path connecting the first valve seat and the second valve seat in the internal space of the main body;
Having a valve body fixed to the tip of the shaft,
By rotating the shaft portion forward and backward in the circumferential direction, the shaft portion linearly reciprocates along the third flow path, and the first valve seat is opened by the valve body. Switchable between a first valve position for closing the second valve seat and a second valve position for closing the first valve seat and opening the second valve seat by the valve body. And
The main body has a metal attachment portion disposed on the opposite side of the internal space with the second water outlet, and a diameter of the main body that connects the second water outlet and the attachment portion. Arranging the first valve seat and the second valve seat along a direction;
The switching member has a metal handle attached by screwing to the attachment portion, and attaches the proximal end of the shaft portion to the handle,
The main body is arranged at a position that is approximately 180 degrees apart from the second water outlet and the mounting portion,
And a cylindrical nipple formed separately from the main body and detachably attached to the second water outlet of the main body.
The base end of the shaft portion of the switching member is detachably attached to the handle, and the valve body has a disk shape smaller in diameter than the diameter of the second water outlet,
By removing the nipple from the second water outlet of the main body, the shaft portion and the valve body can be moved in the axial direction so as to be separated from the handle, and can be taken out from the second water outlet of the main body to the outside. At the same time, the shaft portion and the valve body are inserted from the second water outlet of the main body and moved in the axial direction toward the handle, so that the base end of the shaft portion can be fitted and attached to the handle. A metal switching cock characterized by that. The metal main body is formed integrally from a forged metal body so as to have a flow path inside, and after forming the outline of the flow path by forging, by post-processing 2. The metal switching cock according to claim 1, wherein the flow path is formed by finishing. The shaft portion of the switching member extends coaxially with the third flow path connecting the first valve seat and the second valve seat,
The mounting portion extends coaxially with the second water outlet and is integrally formed with the main body so as to form a cylindrical shape having a diameter substantially equal to or larger than the diameter of the second water outlet. The metal switching cock according to claim 1 or 2. The main body has a substantially cylindrical main shaft portion extending from the first water inlet to the first water outlet;
The attachment portion is provided to be a cylindrical shape protruding in the diameter direction of the main shaft portion on one side in the diameter direction of the main shaft portion,
The second water outlet is provided on the other side in the diameter direction so as to be coaxial with the mounting portion and project in the diameter direction of the main shaft portion,
The second water inlet is provided in a cylindrical shape projecting in the diameter direction of the main shaft portion in parallel with the second water outlet on the first water outlet on the other side in the diameter direction.
Inside the main shaft portion, a third flow path between the first valve seat and the second valve seat on the upstream side of the first valve seat and the second valve seat in the first flow path. An upstream communication hole directly connected to the first valve seat, and a downstream communication hole directly connected to a third flow path between the first valve seat and the second valve seat on the downstream side of the first valve seat and the second valve seat Are arranged in a positional relationship such that they are located on the opposite side of the radial direction with the axis of the main shaft portion interposed therebetween,
By forging brass for forging, the main body composed of the main shaft portion, the mounting portion, the second water outlet, the second water inlet, the first valve seat, and the second valve seat is integrated. metal selector valve according to claim 2 or 3 claims, characterized in that the formed. As the seating surface of the second valve seat is positioned in the first flow inlet and the first on axis connecting the water outlet, according to claim 4, characterized in that integrally forming the main body Metal switching cock. The main body is integrally formed so that the seat surface of the first valve seat is located at a position separated from the center of the main shaft portion toward the second water outlet by the radius of the main shaft portion. The metal switching cock according to claim 5 . Said second valve seat, the integrally formed on the proximal end of the nipple, the claim is adapted to be placed in position by a nipple attached to the second water outlet of the main body 2 or 3 Metal switching cock as described. The metal switching according to claim 4 or 5 , wherein the outer diameter of the seating surface of the first valve seat of the main body is the same as or slightly smaller than the inner diameter of the second water outlet. cock. The first water inlet, the first water outlet, the second water inlet, and the second water outlet, the first water inlet, the first water outlet, the second water inlet, and the second water stream. A hollow metal body having an internal space communicating with each of the outlets;
A first valve seat provided in the middle of a first flow path communicating the first water inlet and the first water outlet in the internal space of the main body;
A second valve seat provided in the middle of a second flow path communicating the first water inlet and the second water outlet in the internal space of the main body;
A switching member mounted on the main body,
The switching member is
A shaft portion disposed so as to extend along a third flow path connecting the first valve seat and the second valve seat in the internal space of the main body;
Having a valve body fixed to the tip of the shaft,
By rotating the shaft portion forward and backward in the circumferential direction, the shaft portion linearly reciprocates along the third flow path, and the first valve seat is opened by the valve body. Switchable between a first valve position for closing the second valve seat and a second valve position for closing the first valve seat and opening the second valve seat by the valve body. And
And a cylindrical nipple formed separately from the main body and detachably attached to the second water outlet of the main body.
The second valve seat is formed integrally with a proximal end of the nipple, and is arranged at a predetermined position by mounting the nipple on a second water outlet of the main body. Metal switching cock.

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