JP2014185698A - Resinous water cut-off valve cartridge, installation structure of resinous water cut-off valve cartridge, and water cut-off structure of faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resinous water cut-off valve cartridge which prevents the deterioration of strength or the elution of restricted substances accompanied with weight reduction or use inherent in brass material.SOLUTION: The whole of a housing 10, a supporting cap 20, a valve bar 30, and fixing cap 50 is made by synthetic resin. The fixing cap 50 is installed on an upper end side of the housing 10 so as to rotate in normal and reverse directions. In the housing 10, a pair of fitting projections 13 is formed at a position near the fixing cap 50 so as to extend in an axial direction. The fitting projections 13 of the housing 10 are fitted with a fitting groove of a faucet body. By the fitting and locking, the housing 10 is prevented from relatively rotating to a valve storing portion, and the fixing cap 50 is screwed and attached with the valve storing portion.

Description

  The present invention relates to a resin water stop valve cartridge in which a water stop valve mechanism using a ceramic disk (a fixed disk and a movable disk) is incorporated in a resin housing, a mounting structure of the resin water stop valve cartridge, and the resin product The present invention relates to a water stop structure for a faucet composed of a water stop valve cartridge and a mounting structure for a valve housing portion of a faucet (as a mounting target part of a resin water stop valve cartridge).

  Conventionally, a water faucet is provided with a water stop valve in a valve housing portion for opening and closing operations, and the valve housing portion can be selectively tilted in either the upward direction or the downward direction, The water stop valve is opened or closed by selectively rotating in one of the opposite directions), and water from the water supply source is discharged or stopped from the water outlet. . Some of the water stop valves have an improved operability by incorporating a ceramic disk as a valve member that performs a valve opening operation and a valve closing operation. In addition, it is necessary to perform maintenance such as replacement of consumable parts due to wear due to aging in about 2 to 10 years. In recent years, each part of the stop valve has been designed to facilitate this maintenance work. Development of a water stop valve cartridge that integrates and integrates the inside of the housing into the housing is progressing. Here, in the case of a water stop valve cartridge for a single water faucet, the housing has a fastening operation by a tool when the single water faucet is inserted into the water faucet body (the female screw on the faucet body side is connected to the water stop valve cartridge side). Metal, such as brass housings, from the demands of satisfying a certain level of strength that can sufficiently withstand the load applied to the housing when the male screw is screwed and fastened) A housing is used.

  However, the brass material is a metal material having excellent corrosion resistance and durability, and is originally a material having the necessary mechanical strength, but the zinc contained in the brass is eluted by touching water, and the brass material It has been pointed out that there is a possibility that a phenomenon (dezincification phenomenon or dezincification corrosion phenomenon) that deteriorates occurs and the mechanical strength decreases or micropores are generated due to corrosion. In addition, as a brass material used for water supply products including a water stop valve housing, free-cutting brass with improved machinability and workability is often used. Lead is included to enhance the properties. Moreover, cadmium is generally contained as an impurity (though it is a trace amount) in zinc which is a brass-containing material. Therefore, when a water stop valve cartridge housing is manufactured using brass material, the mechanical strength is reduced and corrosion occurs due to the dezincing phenomenon, and lead and cadmium are eluted and contained in the water flowing in the water stop valve cartridge. Such a problem may occur. In particular, with the recent increase in international environmental protection awareness, various regulations to prevent the spread of environmental pollutants, such as the RoHS Directive (Restrictions on Hazardous Substances) by the European Union, etc. are also applied to water supply products. Therefore, even when manufacturing a water stop valve cartridge, it is required to reliably prevent the possibility of elution of lead and cadmium.

  Therefore, in the process of searching for another material that does not cause the above-mentioned problems with regard to the water stop valve cartridge having the conventional brass housing, the present inventors have used a water stop valve cartridge as a material to replace the brass material. Focusing on the fact that if the main material is made of synthetic resin, it is possible to completely eliminate the possibility of deterioration of mechanical strength, corrosion, and elution of lead and cadmium due to the above dezincification phenomenon. By devising the mechanical structure by, we conducted extensive experimental research on a resin water stop valve cartridge to replace the conventional brass water stop valve cartridge, and repeated trial and error. As a result, the present inventors have confirmed that a new problem arises particularly in terms of the strength of the housing part simply by replacing a conventional component such as a housing made of brass material with a synthetic resin material. Accordingly, as a result of further earnest research on human rights, the present inventors have come up with an invention of a water stop valve cartridge having sufficient strength even when the housing is formed of a synthetic resin material. ing.

  Patent Document 1 solves the problems inherent in conventional brass materials (such as strength reduction due to use and elution of regulated substances) by enabling the use of a completely synthetic resin. It is an object of the present invention to provide a resin water stop valve cartridge that can be used, and has the following configuration (in the following description of Patent Document 1, description will be made using the member numbers of Patent Document 1). That is, in the invention of Patent Document 1, the entire housing 10 and the entire plug rod 30 are made of synthetic resin. The housing 10 has a small first wall thickness that can withstand the water pressure applied to the movable disk 41 and the fixed disk 45 in the small-diameter cylindrical portion SC. The wall thickness of the male screw portion 15 is larger than the first wall thickness of the small-diameter cylindrical portion, and is large enough to withstand the physical load applied to the fastening male screw portion 15 as the tightening portion 11 is tightened. The second wall thickness is used. Then, on the inner peripheral surface of the small-diameter cylindrical portion SC, a flat ring shape due to the difference between the first wall thickness and the second wall thickness is located at a position that matches the position on the other end side of the fastening male screw portion 15. A step surface 18 is formed.

JP 2012-57665 A

  The water stop valve cartridge of Patent Document 1 configured as described above has the necessary mechanical strength and durability even when the material of the housing and the stopper rod, which are main parts, is changed from a conventional brass material to a synthetic resin material. It is possible to fully satisfy the requirements such as mechanical strength and durability in the male screw part of the housing where a heavy load is applied, and to make it completely synthetic resin. And the unique effects of solving the problems inherent in conventional brass materials (such as strength reduction due to use and elution of regulated substances). On the other hand, the water stop valve cartridge of Patent Document 1 is a conventional water stop valve made of brass in terms of the mounting structure and the fastening structure itself to a water faucet such as a single water faucet (specifically, a valve accommodating portion of the water faucet). The same as the cartridge.

  In detail, a conventional water stop valve cartridge made of brass has a male screw provided in a part of the housing in the axial direction with a built-in internal component (ceramic disk or the like) in the housing. By screwing and tightening into a female screw provided in the water stop valve housing opening of the housing section, the valve housing section of the water faucet is fitted in a watertight manner, and the handle of the valve housing section is opened and closed By operating, the valve mechanism of the water stop valve cartridge is selectively opened and closed. Here, when the male screw of the water stop valve cartridge is tightened to the female screw of the valve housing portion of the water tap, the base end portion of the stop rod (water tap) of the water stop valve cartridge that is a portion fixed to the handle of the water tap The hexagon nut-shaped tightening part formed integrally with the projecting side end exposed from the opening of the valve housing part) is tightened with a tool such as a spanner (clockwise direction similar to the normal screw tightening direction) At this time, a large mechanical load (physical load) due to the torque from the tool is applied to the male screw portion of the water stop valve cartridge, particularly to each screw thread portion constituting the male screw. . In addition, since the rotation axis of the handle of the faucet and the rotation axis of the water stop valve cartridge (inserted in the valve housing portion) (and the rotation shaft of the male screw of the housing with respect to the female screw of the valve housing portion) coincide with each other, When the handle of the water tap is rotated in the forward or reverse direction, the torque (at the time of the rotation operation in one direction) at this time is the torque of the water stop valve cartridge that is tightened into the female screw of the valve accommodating portion of the water tap. The torque is in the direction to loosen the male screw. Typically, when the closing direction of the handle for the valve closing operation is the counterclockwise direction, when the handle is rotated in the closing direction (reverse direction), the rotational torque is generated by the female screw of the valve housing portion. This is the direction opposite to the clockwise direction that is the tightening direction of the male screw portion of the water stop valve cartridge with respect to the portion (that is, the direction in which the tightening is loosened).

  Therefore, in the conventional water stop valve cartridge, when the water stop valve cartridge is fastened and attached to the valve accommodating portion of the water faucet, the looseness of the male screw portion of the water stop valve cartridge due to the opening / closing operation of the handle as described above is taken into consideration. In this case, it is necessary to strongly tighten the water stop valve cartridge with a tool against the handle. In addition, this makes it necessary for the housing of the conventional water stop valve cartridge to have sufficient strength so as to withstand the torque applied to the male screw portion particularly when attached to the water faucet. In particular, when the housing of the water stop valve cartridge is formed of a synthetic resin as in the invention of Patent Document 1, the wall thickness of the male screw portion is set so as to withstand the torque applied to the male screw portion of the housing when attached to the water tap. It was necessary to secure a sufficient strength by considering a sufficient wall thickness in consideration of the load due to the torque. Further, in the conventional water stop valve cartridge, when the water faucet is attached to the valve housing portion, the torque of the tool is set so that an excessive load is not applied to the female screw portion of the valve housing portion and the male screw portion of the water stop valve cartridge. Although it is necessary to manage the torque at the time of tightening so that it is within the set value (so that an excessive load is not applied to the male screw part etc. to be tightened) (by a torque control device built in the tool, etc.) In some cases, sufficient torque management is not performed, and the tightening operation may be performed with a torque exceeding the set value. In this case, in particular, when the housing of the water stop valve cartridge is formed of a synthetic resin as in the invention of Patent Document 1, depending on an excessive torque value exceeding the set value, an excessive load is applied to the housing and damage may occur. Since the possibility cannot be denied, it is difficult to form the housing from a metal material other than the conventional brass material, assuming such a worst case.

  Therefore, the present invention uses a synthetic resin material as a material for main parts such as a housing and a plug bar, without using a conventional metal material such as a brass material, while opening / closing with a water faucet handle. It is possible to completely eliminate the influence of torque (in the direction of loosening the tightening in the conventional water stop valve cartridge) applied during operation, and as in the past (considering loosening due to torque during opening and closing operations) As a result, there is no need to tighten the water stop valve cartridge into the water tap valve housing. As a result, it is not necessary to use a tool when attaching the water stop valve cartridge to the water tap valve housing as in the past. Can be easily and reliably and smoothly attached to the valve accommodating part of the faucet, and also eliminates the need for torque management at the time of installation as in the past. Resin that can completely reduce the weight of synthetic resin and completely solve the problems inherent in brass materials (such as reduced strength and elution of regulated substances). It is an object of the present invention to provide a water stop valve cartridge, a mounting structure of a resin water stop valve cartridge, and a water stop structure of a faucet composed of the resin water stop valve cartridge and a fitting groove of a mounting target portion. .

  The water stop structure according to the present invention is a water stop structure of a water faucet comprising a resin water stop valve cartridge and a valve storage portion of a water faucet that houses and mounts the resin water stop valve cartridge. The resin water stop valve cartridge includes a housing, a stopper rod, a movable disk, a fixed disk, and a fixed member. All parts of the housing are integrally molded from a synthetic resin material. All parts of the plug bar are integrally formed of a synthetic resin material, and are coaxially accommodated in the housing (for example, inserted from the opening on the other axial end side) and extend in the axial direction of the housing. One axial end is projected from one axial end of the housing. The movable disk is housed and disposed in the housing so as to be rotatable, and is connected to the other end in the axial direction of the plug bar so as to rotate at a predetermined angle as the plug bar rotates in the forward and reverse directions. It consists of a ceramic disk that rotates in the forward and reverse directions within the range. The stationary disk is housed in the housing so as not to rotate, and is made of a ceramic disk that performs valve opening and closing operations with the movable disk. The fixing member is attached to one end side of the housing in the axial direction so as to be rotatable in the forward and reverse directions with respect to the housing (more preferably, so as not to move in the axial direction with respect to the housing). . (The fixing member is, for example, externally fitted to a portion on one end side in the axial direction of the housing and attached coaxially, and is rotatable about the shaft with respect to the housing.) At one end side in the axial direction to which the fixing member is attached, at a predetermined portion adjacent to the axial tip of the fixing member (for example, a directly continuous portion or a portion continuous at a slight interval), It has a valve-side fitting part that forms a linear convex part or concave part extending in the axial direction on the outer peripheral surface of the part. In addition, the fixing member has a valve-side screw portion formed at a portion on the tip end side in the axial direction. (Typically, the valve-side screw portion of the fixing member is a male screw formed on the outer peripheral surface on the front end side of the fixing cap 50 as in an embodiment described later, but may be a female screw. In this case, for example, a female cylinder formed integrally with a large-diameter cylindrical body so as to be coaxial with the outside of the base portion of the fixed cap 50 according to an embodiment described later, and threaded on the inner peripheral surface of the cylindrical body; Moreover, the said valve accommodating part is provided with a mounting part, a valve accommodating part side screw part, and a valve accommodating part side fitting part. The mounting portion has a cylindrical shape in which the water stop valve cartridge can be accommodated in the inside from the tip opening. The valve housing part side screw part is formed on the peripheral surface of the mounting part, and is screwable with the screw part of the fixing member of the water stop valve cartridge. (The valve housing portion side screw portion is typically a female screw formed on the inner peripheral surface of the mounting portion. However, as described above, when the screw portion on the fixing member side is a female screw, the mounting portion is mounted. The valve accommodating portion side fitting portion is a linear shape extending along the axial direction of the mounting portion at a predetermined angular position on the peripheral surface of the mounting portion. By forming a concave shape or a concave shape and engaging with the valve side fitting portion of the water stop valve cartridge housing in an uneven relationship, the water stop valve cartridge housing rotates relative to the mounting portion. Stop that. (Typically, the valve accommodating portion side fitting portion is formed on the same peripheral surface as the valve accommodating portion side screw portion in the mounting portion, and the valve accommodating portion side screw portion is formed on the inner peripheral surface of the mounting portion. In the case of a screw, it is in the shape of a recessed groove formed so as to divide the female screw on the inner peripheral surface of the mounting part, but the male part formed on the outer peripheral surface of the mounting part is a valve housing side screw part. In the case of a screw, the male screw can be provided on the outer peripheral surface of the mounting portion so as to be divided, or can be formed on the inner peripheral surface of the mounting portion on the side opposite to the male screw. In addition, the valve side fitting portion, which is an element corresponding to the valve accommodating portion side fitting portion, is a female screw when corresponding to the male screw on the outer peripheral surface of the mounting portion, and corresponds to the female screw on the inner peripheral surface of the mounting portion. (If you do, use a male screw.)

  The resin water stop valve cartridge according to the present invention is used for a water stop structure of a water faucet including a valve housing portion of a water faucet for housing and mounting the resin water stop valve cartridge. The resin water stop valve cartridge includes a housing, a stopper rod, a movable disk, a fixed disk, and a fixed member. All parts of the housing are integrally molded from a synthetic resin material. All parts of the plug bar are integrally formed of a synthetic resin material, and are coaxially accommodated in the housing (for example, inserted from the opening on the other axial end side) and extend in the axial direction of the housing. One axial end is projected from one axial end of the housing. The movable disk is housed and disposed in the housing so as to be rotatable, and is connected to the other end in the axial direction of the plug bar so as to rotate at a predetermined angle as the plug bar rotates in the forward and reverse directions. It consists of a ceramic disk that rotates in the forward and reverse directions within the range. The stationary disk is housed in the housing so as not to rotate, and is made of a ceramic disk that performs valve opening and closing operations with the movable disk. The fixing member is attached to one end side of the housing in the axial direction so as to be rotatable in the forward and reverse directions with respect to the housing (more preferably, so as not to move in the axial direction with respect to the housing). . (The fixing member is, for example, externally fitted to a portion on one end side in the axial direction of the housing and attached coaxially, and is rotatable about the shaft with respect to the housing.) At one end side in the axial direction to which the fixing member is attached, at a predetermined portion adjacent to the axial tip of the fixing member (for example, a directly continuous portion or a portion continuous at a slight interval), It has a valve-side fitting part that forms a linear convex part or concave part extending in the axial direction on the outer peripheral surface of the part. Further, the fixing member has a valve-side screw portion formed at a portion on the axial front end side. (Typically, the valve-side screw portion of the fixing member is a male screw formed on the outer peripheral surface on the front end side of the fixing cap 50 as in an embodiment described later, but may be a female screw. In this case, for example, a female cylinder formed integrally with a large-diameter cylindrical body so as to be coaxial with the outside of the base portion of the fixed cap 50 according to an embodiment described later, and threaded on the inner peripheral surface of the cylindrical body; You can also do it.)

  The mounting structure of the resin water stop valve cartridge according to the present invention is a mounting structure of the resin water stop valve cartridge for mounting the resin water stop valve cartridge to the valve accommodating portion of the faucet, A housing integrally formed from a synthetic resin material, and a cylindrical fixing member that is externally fitted to a portion on one end side in the axial direction of the housing and is rotatable in forward and reverse directions with respect to the housing. The housing has a linear protrusion extending in the axial direction on the outer peripheral surface of the part of the housing at a part of the one end side in the axial direction to which the fixing member is attached. It has a valve-side fitting part that forms a part shape or a concave shape, and the fixing member has a valve-side screw part formed at a site on the tip side in the axial direction. And the valve-side fitting portion of the housing can be freely fitted to the valve-housing-side fitting portion formed in the valve housing portion of the faucet, and the valve-side screw portion of the fixing member is accommodated in the valve housing of the faucet It can be screwed together with the valve accommodating part side screw part formed in the part.

  According to the water stop structure of a water faucet according to the present invention, water is supplied while using a synthetic resin material without using a metal material such as a conventional brass material as a material for main parts such as a housing and a plug rod. The influence of the torque (in the direction of loosening the tightening in the conventional water stop valve cartridge) applied during the opening / closing operation by the stopper handle can be completely eliminated. As a result of the fact that there is no need to tighten the water stop valve cartridge into the water tap valve housing (considering loosening due to torque), a tool is used to attach the water stop valve cartridge to the water tap valve housing as before. Can be easily and surely and smoothly attached to the valve housing of the water faucet by manual operation, and torque management at the time of installation as in the past can be made unnecessary. As a result, it is possible to make the main parts completely synthetic resin, completely reducing the weight by synthetic resin and the problems inherent in conventional brass materials (such as strength reduction and elution of regulated substances). Can be solved.

  According to the mounting structure of the resin water stop valve cartridge and the resin water stop valve cartridge according to the present invention, without using a metal material such as a conventional brass material, as a material of main parts such as a housing and a stopper rod, While using a synthetic resin material, it is possible to completely eliminate the influence of torque (in the direction of loosening the tightening in the conventional water stop valve cartridge) applied during the opening / closing operation with the handle of the faucet. As a result, there is no need to tighten the water stop valve cartridge into the valve housing of the water faucet as in the past (considering loosening due to torque during opening and closing operations). It is no longer necessary to use a tool when attaching to the valve housing part, and it can be easily and surely and smoothly attached to the valve housing part of the faucet by manual operation. Torque management at the time of attachment is also unnecessary, and as a result, it is possible to make the main parts completely synthetic resin, lightening by synthetic resin, and problems inherent in conventional brass materials (Reduced strength due to use, elution of regulated substances, etc.) can be solved completely.

FIG. 1 shows a resin water stop valve cartridge according to an embodiment of the present invention, in which (a) is a front view and (b) is a side view. FIG. 2 shows a resin water stop valve cartridge according to an embodiment of the present invention, in which (a) is a plan view and (b) is a bottom view. FIG. 3 is an exploded perspective view showing a resin water stop valve cartridge according to an embodiment of the present invention, with all components disassembled. 4A and 4B show a housing of a resin water stop valve cartridge according to an embodiment of the present invention, wherein FIG. 4A is a perspective view and FIG. 4B is a front view. 5A and 5B show a stopper rod of a resin water stop valve cartridge according to an embodiment of the present invention. FIG. 5A is a perspective view (when the stopper rod is in a valve closing position), and FIG. 5B1 is a stopper rod. (B2) is a plan view (when the plug bar is in the valve opening position), (c1) is a bottom view (when the plug bar is in the valve closing position), (C2) is a bottom view (when the stopper rod is in the valve open position). FIG. 6 shows a movable disk of a valve member of a resin water stop valve cartridge according to an embodiment of the present invention, wherein (a) is a plan view, (b) is a side view, and (c) is a bottom view. FIG. 7 shows a fixed disk for a valve member of a resin water stop valve cartridge according to an embodiment of the present invention, (a) is a plan view, (b) is a side view, and (c) is B in (a). -B line sectional drawing, (d) is a bottom view. FIG. 8 is a view for explaining the assembling operation of the resin water stop valve cartridge according to the embodiment of the present invention. FIG. 8A shows the assembly of the valve mechanism components to the housing while the fixing cap and the retaining ring are assembled. FIG. 7B is a partially exploded perspective view showing a state in which it is removed from the housing, and FIG. 7B is a perspective view showing a state (assembled state) in which the fixing cap is attached to the housing (assembled with the valve mechanism components) and then fixed with a retaining ring. FIG. 9 is a perspective view showing a state immediately before the resin water stop valve cartridge (assembled state) according to the embodiment of the present invention is inserted and attached to a valve accommodating portion of a water faucet as an attachment target portion together with the valve accommodating portion. In the figure, the one-dot chain line shows the valve housing part and its peripheral part in front view. FIG. 10 shows a resin water stop valve cartridge (assembled state) according to an embodiment of the present invention, which is inserted into an opening portion of a valve accommodating portion of a water faucet as an attachment target portion, and is attached. It is a perspective view which shows the state which completed the water stop structure which consists of a resin water stop valve cartridge. FIG. 11 shows a plan view of a resin water stop valve cartridge according to an embodiment of the present invention, together with the opening direction (opening direction) and closing direction (closing direction) of the valve mechanism. FIG. 12 shows the closed state and the opened state of the resin water stop valve cartridge according to the embodiment of the present invention, respectively, and (a1) shows the closed state of the resin water stop valve cartridge (FIG. 2 ( (b) is a cross-sectional view (as a cross-sectional view taken along the line AA), (a2) is a perspective view showing a rotational positional relationship of the movable disk with respect to the fixed disk in a closed state of the resin water stop valve cartridge, and (b1) is a resin. Sectional drawing (corresponding to a1) showing the valve-opened state of the water stop valve cartridge, (b2) is a perspective view showing the rotational position relationship of the movable disk relative to the fixed disk in the valve open state of the resin water stop valve cartridge. is there. FIG. 13: shows the side view of the resin water stop valve cartridge which concerns on one embodiment of this invention with the water inflow direction and water discharge direction to a resin water stop valve cartridge. FIG. 14 is a view for explaining an attachment operation (and removal operation) of the resin water stop valve cartridge according to an embodiment of the present invention to an attachment target portion, and (a) is a resin water stop valve cartridge. Sectional drawing which shows the state immediately after inserting in a mounting object part, and just before screwing, (b) is the state which screwed and completely attached after inserting the resin water stop valve cartridge in a mounting object part FIG. FIG. 15 is a view for explaining a process of mounting a resin water stop valve cartridge assumed by the present inventor to a mounting target part as a comparative example of the resin water stop valve cartridge according to the embodiment of the present invention. (A) is sectional drawing which shows the state which started insertion of the resin water stop valve cartridge of a comparative example to the attachment object part (in the state which removed the external cover body), (b) is the resin stop of a comparative example It is sectional drawing which shows the state which inserted the water valve cartridge into the attachment object part, was fixed with the cover body, and was completely mounted | worn.

  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.

[Valve receiving part]
First, with reference to FIG. 9, the valve accommodating part 120 which is the mounting object (partner side member) of the resin water stop valve cartridge of the present embodiment will be described. The valve housing part 120 is a member of a faucet body 100 that is a member that attaches a water stop valve cartridge to a faucet such as a water faucet, and passes and stops water through the water by the water stop valve operation of the water stop valve cartridge. It is integrally formed at a predetermined portion of the substantially cylindrical peripheral wall 110. The valve accommodating portion 120 includes a substantially cylindrical mounting portion 121 that protrudes with a predetermined axial length in a direction orthogonal to the axial direction of the peripheral wall 110. The mounting portion 121 has a substantially cylindrical shape having a predetermined inner diameter and a predetermined outer diameter (corresponding to the difference between the inner and outer diameters) and has a predetermined thickness. A female screw 122 is threaded. In addition, a fitting groove 123 is formed at each of the inner peripheral surfaces of the base 121 at a predetermined angle in the circumferential direction (a position at an angle of 180 degrees in the illustrated example). ing. Each fitting groove 123 has a predetermined width (constant width) and a predetermined depth, and extends the entire length of the base 121 along the axial direction of the base 121 (that is, extends from the outer edge to the inner edge of the base 121). ) It has a straight groove shape. Therefore, on the inner peripheral surface of the base 121, the female screw 122 is not provided in the portion where the pair of fitting grooves 123 are provided, and the female screw 122 is circumferentially provided in the portion where the fitting groove 123 is provided. It is divided (specifically, divided into two by the two fitting grooves 123 so as to be equally spaced).

  Here, in the present embodiment, the pair of fitting grooves 123 are arranged at angular positions along the axial direction (vertical direction in FIG. 9) of the peripheral wall 110 of the faucet body 100 and serve as the upper end of the base 121. Although it is arrange | positioned at the 1st angular position and the 2nd angular position used as a lower end, respectively, another angular position (For example, in the angular position along the horizontal direction orthogonal to the axial direction of the surrounding wall 110 of the faucet main body 100). It is also possible to provide at the third angular position which is the right end of the base 121 and the fourth angular position which is the left end) or at other positions. That is, the fitting groove 123 of the valve housing portion 120 is one of the cartridge rotation prevention means of the water stop structure of the faucet of this embodiment (and the present invention) (the cartridge rotation prevention means on the valve accommodation portion side). The fitting protrusion 13 provided on the housing 10 of the resin water stop valve cartridge (described later) is the other (resin water stop) of the cartridge rotation prevention means of the water stop structure of the faucet. It constitutes a cartridge rotation preventing means) on the valve cartridge side. Therefore, the fitting groove 123 of the valve housing portion 120 has the same number as the fitting projection 13 of the resin water stop valve cartridge at the same angular position in the circumferential direction of the base portion 121, and the fitting projection 13 of the base portion 121. It can be fitted by sliding along the axial direction (and this fitting completely prevents rotation of the resin water stop valve cartridge in the forward / reverse direction with respect to the valve housing part 120). As long as it is configured, various configurations can be employed. For example, the number of the fitting grooves 123 of the valve accommodating portion 120 can be only one, and the number of the fitting projections 13 of the housing 10 of the resin water stop valve cartridge can be only one of the same number, Alternatively, the number of the fitting grooves 123 of the valve accommodating portion 120 is set to a predetermined number of three or more, and the number of the fitting protrusions 13 of the housing 10 of the resin water stop valve cartridge is also set to the same predetermined number. it can. Moreover, when the number of the fitting grooves 123 of the valve accommodating portion 120 and the number of the fitting projections 13 of the housing 10 is plural, the angular intervals thereof can be the same angular intervals as in the present embodiment, but are different. An angular interval is also possible. From the viewpoint of formability and workability, the number of fitting grooves 123 of the valve housing portion 120 and the number of fitting projections 13 of the housing 10 are set to two (each pair) as in the present embodiment. Are preferably the same angular interval (180 degree interval).

[Water stop valve cartridge]
Next, the overall structure of the resin water stop valve cartridge according to the present embodiment will be described. As shown in FIGS. 1 to 3, the resin water stop valve cartridge according to the present embodiment includes a cartridge as a component. A housing 10 as a housing, a support cap 20 as a lower cap of the housing 10, a plug rod 30 as a cartridge shaft, and a valve member for performing a water flow operation (valve opening operation) and a water stop operation (valve closing operation) 40, a movable disk 41 and a fixed disk 45, a fixed cap 50 as an upper cap of the housing 10, and a stop ring 61 for preventing the fixed cap 50 from coming off. The housing 10 is for accommodating a valve mechanism component including the plug rod 30 and the valve member 40, and has a stepped shape as a whole with one end in the axial direction (upper end) and the other end in the axial direction (lower end) as openings. It has a cylindrical appearance. The housing 10 is made of a predetermined synthetic resin material having a relatively high strength characteristic among various synthetic resin materials, preferably a polyphenylene sulfide (PPS) resin, and using the synthetic resin material, The whole is integrally molded by a predetermined molding technique (preferably an injection molding technique using a predetermined mold joining technique) so as to have a predetermined shape (a predetermined inner / outer shape and a predetermined cross-sectional shape). The support cap 20 is attached to the lower end of the housing 10 by screwing.

  All parts of the support cap 20 are made of the same synthetic resin as that of the housing 10, preferably polyphenylene sulfide (PPS) resin. Using the synthetic resin material, the support cap 20 has a predetermined shape (predetermined inner / outer shape and predetermined cross-sectional shape). The whole is integrally formed by a predetermined molding technique such as an injection molding technique. Further, the plug rod 30 is inserted and attached along the axial center from one axial end of the housing 10 and is housed and attached in the housing 10 so as to extend in the axial direction of the housing 10. The plug rod 30 is a synthetic resin material (particularly a synthetic resin material having a relatively low frictional resistance on the contact surface of the molded product), preferably all parts having a relatively low coefficient of friction among various synthetic resin materials. Is made of polyacetal resin (POM), and is integrally molded by a predetermined molding technique such as an injection molding technique so as to have a predetermined shape (predetermined inner / outer shape and predetermined sectional shape) using the synthetic resin material. Yes. The valve member 40 includes a movable disk 41 made of a ceramic disk and a fixed disk 45 made of a ceramic disk, and is housed in the other end in the axial direction of the housing 10 in the order of the fixed disk 45 and the movable disk 41. At the same time, the movable disk 41 is drivingly connected to the tip end (the other end in the axial direction) of the stopper rod 30. The fixed cap 50 is integrally attached to the upper end of the housing 10 so as to be rotatable relative to the forward and reverse directions. All parts of the fixing cap 50 are made of the same synthetic resin as that of the stopper rod 30, preferably polyacetal resin (POM). Using the synthetic resin material, the fixed cap 50 has a predetermined shape (predetermined inner / outer shape and predetermined sectional shape). The whole is integrally formed by a predetermined molding technique such as an injection molding technique. The retaining ring 61 is made of a corrosion-resistant metal material such as stainless steel (SUS304 or the like) (so as to have a C-shaped retaining ring shape).

[Housing 10]
As shown in FIG. 4A, the housing 10 is formed by injection molding or the like of the predetermined synthetic resin material so that a cylindrical plug rod insertion portion 11, a cylindrical fitting portion 12 with a projection, a cylindrical shape is formed. The O-ring mounting portion 14, the perforated cylindrical water flow portion 15, and the cylindrical support cap mounting portion 16 are integrally formed so as to extend coaxially in this order, and the stepped cylinder having the predetermined shape is formed. It is a single-piece molded product. Specifically, as shown in FIG. 4, the stopper rod insertion portion 11 has a predetermined cylindrical shape having a predetermined length (predetermined axial length) or a predetermined height having a predetermined inner diameter and a predetermined outer diameter and a predetermined thickness. None, chamfered on the outer peripheral surface side of the tip. The fitting portion 12 has a cylindrical shape with a larger diameter than the plug rod insertion portion 11. Specifically, the fitting portion 12 has a cylindrical shape with a short axis protrusion or a circular ring shape with a protrusion having a predetermined inner diameter that is substantially the same as the outer diameter of the plug rod insertion portion 11, and other than the protrusion portion. The main portion has a predetermined outer diameter corresponding to the thickness of the main portion. As shown in FIG. 12, the inner peripheral surface of the stopper rod insertion portion 11 and the inner peripheral surface of the fitting portion 12 each form a simple cylindrical surface (with a diameter corresponding to each inner diameter). ing. Moreover, the fitting part 12 has the external shape (design external appearance) which protrudes outward in the circular ring shape at the lower end of the plug stick insertion part 11. And between the lower end of the inner peripheral surface of the said plug stick insertion part 11 and the upper end of the inner peripheral surface of the fitting part 12, the level | step-difference part according to the difference of both internal diameters is formed, At the upper end position of the inner peripheral surface of the fitting portion 12, a step surface is formed which becomes a circular ring-shaped flat surface having a predetermined width (in the radial direction of the fitting portion 12) corresponding to the difference between the inner diameters of the two. . Here, the fitting part 12 is accommodated and arranged in the base part 121 in a substantially abutting state on the inner peripheral surface of the base part 121 of the valve accommodating part 120 (more precisely, the apex position of the female screw 122 of the base part 121). The outer diameter of the portion is substantially the same as or slightly smaller than the inner diameter of the inner peripheral surface of the base 121 (more precisely, the diameter between the vertices of the female screw 122 of the base 121).

  On the outer peripheral surface of the fitting portion 12, a predetermined number of fitting protrusions 13 as cartridge rotation prevention portions, which is the other of the cartridge rotation prevention means, are located at a predetermined angle, and the fitting portion 12 radiates. It is integrally formed so as to protrude outward in the direction. In the present embodiment, the fitting protrusions 13 having the same shape are provided so as to be paired with each other at positions at an angle of 180 degrees on the outer peripheral surface of the fitting portion 12. Each fitting protrusion 13 includes a predetermined length (height) extending the entire axial length of the fitting portion 12, a predetermined width occupying a predetermined angle in the circumferential direction of the fitting portion 12, and an outer peripheral surface of the fitting portion 12. And a pair of fitting protrusions 13 between the axial ends of the fitting portion 12 with the predetermined width (ie, from the upper end to the lower end). It extends linearly along the central axis of the fitting portion 12 (at positions parallel to each other and facing each other). The fitting protrusion 13 completely prevents the housing 10 of the resin water stop valve cartridge from rotating in the forward and reverse directions with respect to the valve housing portion 120 when the resin water stop valve cartridge is attached to the valve housing portion 120. And is inserted into the fitting groove 123 having a corresponding shape provided in the valve accommodating portion 120 by sliding in the axial direction, and is tightly fitted in the fitting groove 123. ing. That is, the predetermined width of each fitting protrusion 13 is set to the same dimension as the predetermined width of the fitting groove 123, and the predetermined thickness of each fitting protrusion 13 is the same as the predetermined depth of the fitting groove 123. It is set to a dimension (or a slightly smaller dimension). Here, the predetermined width of each fitting protrusion 13 is the predetermined width of the fitting groove 123 so that the fitting protrusion 13 is completely rotated in the circumferential direction of the valve housing portion 120 with respect to the fitting groove 123. It is preferable that the predetermined thickness of each fitting protrusion 13 is set to the same size as long as the rotation preventing force can be sufficiently exerted by fitting the fitting protrusion 13 to the fitting groove 123. It is good also as a dimension smaller than the predetermined depth of the groove | channel 123, and it can be anticipated that the insertion by the sliding of the fitting protrusion 13 to the fitting groove | channel 123 is smoothed in this case.

  The O-ring mounting portion 14 has a predetermined outer diameter that is slightly smaller than the outer diameter of the fitting portion 12, has a short-axis cylindrical shape or a circular ring shape shorter than the fitting portion 12, and has an outer peripheral surface thereof. An O-ring groove (not shown) for externally fitting and inserting the O-ring R1 is formed along the circumferential direction. An O-ring R1 is elastically fitted in the O-ring groove of the O-ring mounting portion 14 and mounted. As shown in FIG. 12, the O-ring mounting portion 14 has a predetermined inner diameter that is the same as the inner diameter of the fitting portion 12. Thereby, the inner peripheral surface of the fitting part 12 and the inner peripheral surface of the O-ring mounting part 14 each form a simple columnar surface that is completely continuous (having the same diameter as their inner diameter). The water flow portion 15 has a cylindrical shape with a predetermined axial length (predetermined height) having a predetermined outer diameter slightly smaller than the outer diameter of the O-ring mounting portion 14. In addition, the lower end edge part of the O ring mounting part 14 is chamfered, and forms the taper surface which diameter-reduces toward the lower end (and the upper end of the water flow part 15 which corresponds to the said lower end). That is, the outer diameter of the water flow portion 15 is smaller than the outer diameter of the O-ring mounting portion 14 by a dimension corresponding to this tapered surface. On the other hand, the water flow portion 15 has a predetermined inner diameter that is slightly larger than the inner diameter of the O-ring mounting portion 14. Thereby, the wall thickness of the water flow part 15 is compared with the wall thickness of the O-ring mounting part 14 having a larger outer diameter than the water flow part 15 (and the fitting part 12 having a larger outer diameter than that). The predetermined thickness is smaller by the sum of the outer diameter difference corresponding to the tapered surface and the inner diameter difference.

  The peripheral wall of the water flow portion 15 is perforated so that the water outlets 15a each having a rectangular opening shape are symmetrically arranged (and paired with each other) at angular positions facing each other at 180 degrees in the circumferential direction. It is installed. In addition, the water outlet 15a of the water flow part 15 is a predetermined distance from the upper end position of the water flow part 15 (the boundary position with the O-ring mounting part 14 or the lower end position of the tapered surface) from the lower end position of the water flow part. It has a predetermined height dimension that extends only to an upper position. In addition, each outlet 16a of the water flow portion 15 extends in a circular arc shape extending in a predetermined angle range (for example, a range of about 90 degrees) in the circumferential direction of the water flow portion 15, and this predetermined angle It has the circumferential dimension (arc length) corresponding to the extending range. Thereby, the wall portion between the pair of outlets 15a in the water flow portion 15 is also symmetrically arranged with an angle range of about 90 degrees, and the circumferential dimension (arc) corresponding to the extension range of this predetermined angle. Long). Moreover, as shown in FIG. 12, the water outlet 15a of the water flow part 15 occupies the upper half part of the water flow part 15, and the width dimension (the height dimension in FIG. The dimension that is the same as the axial length of the upper half portion of the water flow portion 15 is the same as or substantially the same as the thickness of the movable disk 41 of the valve member 40.

  The support cap mounting portion 16 has a cylindrical shape with a screw having a predetermined outer diameter that is the same as the outer diameter of the O-ring mounting portion 14. Moreover, the upper end edge part of the support cap attaching part 16 is chamfered, and forms the taper surface which diameter-reduces toward the upper end (and the lower end of the water flow part 15 which corresponds to the said upper end). That is, the outer diameter of the support cap mounting portion 16 is larger than the outer diameter of the water flow portion 15 by a dimension corresponding to the tapered surface. Similarly, the lower end edge portion of the support cap mounting portion 16 is chamfered to form a tapered surface that is reduced in diameter toward the lower end. On the other hand, as shown in FIG. 12, a female screw 16a is formed on the inner peripheral surface of the support cap mounting portion 16 from the lower end position in the axial direction to a position slightly ahead of the upper end position. The lower end position (start position) of the female screw 16a in the axial direction of the support cap mounting portion 16 coincides with the lower end of the support cap mounting portion 16, and the upper end position (end position) is substantially the same as the lower end position of the tapered surface. I'm doing it. Further, the inner diameter of the support cap mounting portion 16 at the apex position of the female screw 16 a is a predetermined inner diameter that is the same (or substantially the same) as the inner diameter of the water flow portion 15. And the dimension from the lower end position of the water outlet 15a of the water flow portion 15 to the lower end of the tapered surface of the support cap attachment portion 16 (or from the lower end position of the water outlet 15a of the water flow portion 15 to the support cap attachment portion 16 The dimension of the female screw 16a up to the end position) is the same as or substantially the same as the thickness of the fixed disk 45 of the valve member 40.

[Support Cap 20]
The support cap 20 is attached to and detached from the circular opening at the lower end of the support cap mounting portion 16 of the housing 10 by screwing and screwing. Specifically, as shown in FIGS. 3 and 4, the support cap 20 is formed by subjecting the predetermined synthetic resin material to injection molding or the like, thereby forming a circular ring-shaped or short cylindrical base 21 and an upper end side of the base 21. Are integrally formed in a stepped cylindrical shape or a stepped ring shape in which a circular ring shape having a smaller diameter than the base portion 21 or a screwed portion 22 having a short cylindrical shape is integrally formed. The base portion 21 has a circular ring shape having a predetermined outer diameter slightly smaller than the outer diameter of the support cap mounting portion 16 of the housing 10. On the outer peripheral surface of the base portion 21, an O-ring groove (not shown) for externally fitting and inserting the O-ring R2 is formed along the circumferential direction. An O-ring R2 is elastically fitted in the O-ring groove of the base 21. The screwing portion 22 has a circular ring shape having a predetermined outer diameter corresponding to the inner diameter of the support cap mounting portion 16 of the housing 10, and a support cap is provided on the outer peripheral surface of the screwing portion 22 over the entire axial length thereof. A male screw 22b that is screwed into the female screw 16a of the mounting portion 16 (that is, can be screwed into and removed from the female screw 16a) is formed by threading. The inner end surface (upper end surface) of the screw portion 22 is a circular ring-shaped flat surface, and the O-ring R3 is inserted into the inner end surface with a close fit along the circumferential direction. An O-ring groove (not shown) is formed. An O-ring R3 is fitted in the O-ring groove of the base portion 21 in a close fit.

  As shown in FIG. 12, the inner peripheral surface of the support cap 20 has a circular cross section (that is, a cylindrical shape) having a first predetermined inner diameter at the inner end side half (upper half) corresponding to the screwed portion 22. ) A square with a regular hexagonal cross section that has a second predetermined inner diameter that is larger than the first predetermined inner diameter by a predetermined size at the circular inner peripheral surface 22a and the outer end side half (lower half) corresponding to the base 21. It is a stepped inner peripheral surface composed of the inner peripheral surface 23a. As a result, the inner peripheral surface of the support cap 20 has first and second inner diameters between the circular inner peripheral surface 22a having the first predetermined inner diameter and the square inner peripheral surface 23a having the second predetermined inner diameter. A stepped surface formed of a flat surface having a width and a planar shape corresponding to the difference is formed. That is, when the support cap 20 is viewed from the bottom surface 23 side (lower end side) as the lower end surface, as shown in FIG. 2B, the circular inner periphery of the screwed portion 22 is formed inside the rectangular inner peripheral surface 23a of the base portion 21. The surface 22a appears and is visually recognized, and the step surface between the circular inner peripheral surface 22a and the rectangular inner peripheral surface 23a appears and is visually recognized. Further, at the bottom surface 23 of the base portion 21, the lower end edge of the enlarged inner peripheral surface 23a appears as a regular hexagonal opening. The support cap 20 thus configured has a lower end of the housing 10 (with the stopper rod 30 attached to the housing 10 as described later and the movable disk 41 and the fixed disk 45 accommodated inside the housing 10). The support cap mounting portion 16 is fixed by screwing. Specifically, the screwing portion 22 of the support cap 20 is completely screwed into the female screw 16a of the housing 10 and fastened, and the O-ring R3 on the upper end surface of the screwing portion is fixed to the fixing disk inside the housing 10. Elastically contact the lower surface of 41 to support the fixed disk 41 from below (impossible to move in the axial direction) and support the movable disk 41 between the stopper rod 30 and the fixed disk 45 (not to move in the axial direction). To do.

[Plug bar 30]
The plug rod 30 is formed by injection molding or the like of the predetermined synthetic resin material, so that a cylindrical or columnar spline fitting portion 31 or a cylindrical columnar insertion (or a hollow central shaft portion) is inserted. The landing part 32 and the irregularly shaped cylindrical driving part 33 are integrally formed so as to extend coaxially in this order, and are formed into a step-shaped irregularly shaped cylindrical integral part having the predetermined shape. Specifically, as shown in FIG. 5, the spline fitting portion 31 has a spline shaft shape having a predetermined outer diameter (a large number of spline grooves are formed on the outer peripheral surface) and has a predetermined axial length. Is spline-fitted to the handle 130 of the valve accommodating portion 120 as shown in FIG. 6, transmits a rotational driving force in the forward / reverse direction by the handle 130, and rotates the plug rod 30 in the forward / reverse direction. A female screw 31a is formed in the spline fitting portion 31 along the central axis. When the handle 130 is fixed to the resin water stop valve cartridge (attached to the valve housing portion), the spline fitting portion 31 The handle 130 is fixed to the water stop valve cartridge so as not to move in the axial direction by screwing a male screw (not shown) corresponding to the female screw 31a. Further, the outer diameter of the spline fitting portion 31 (the diameter connecting the vertices of the protrusions at the opposing angular positions spaced apart by 180 degrees between the spline grooves by spline processing) is larger than the inner diameter of the plug rod insertion portion 11 of the housing 10. The spline fitting portion 31 is loosely fitted to the plug rod insertion portion 11 of the housing 10 so as to be freely inserted. Furthermore, the outer diameter of the insertion portion 32 is a predetermined outer diameter that is slightly larger than the outer diameter of the spline fitting portion 31 and is the same as or substantially the same as the inner diameter of the plug rod insertion portion 11 of the housing 10. The insertion portion 32 is inserted into the plug rod insertion portion 11 of the housing 10 so as to be slidable in the axial direction and rotatable in the circumferential direction. A position at a predetermined distance in the axial direction from the base end (or a position at a predetermined distance from the distal end) on the distal end side (upper end side) of the insertion portion 32 has a predetermined depth over the entire circumferential direction. A fitting groove 32a having a circular ring groove shape is formed.

  Here, as shown in FIG. 12, the axial position of the fitting groove 32 a in the insertion portion 32 is inserted from the lower end opening of the housing 10, and the insertion portion 32 of the plug rod 30 is inserted into the housing 10. When the upper end surface of the drive unit 33 (more precisely, the upper end surface of the restricting portion 33b) is brought into contact with the stepped surface of the fitting portion 12. The groove 32a is set at a predetermined height position protruding from the upper end surface of the housing 10 by a predetermined distance. Specifically, as will be described later, in a state where the fixing cap 50 is fixed to the upper end portion of the housing 10, the lower edge position of the fitting groove 32 a of the stopper rod 30 is substantially the same as the upper surface of the upper wall 53 of the fixing cap 50. The axial position of the fitting groove 32a is set so as to be in a flush position. When the stopper rod 30 is inserted from the lower end opening of the housing 10 and the stopper rod 30 is completely attached to the housing 10 (completely attached state), the retaining ring 61 is attached to and detached from the fitting groove 31a of the stopper rod 30. The stopper ring 61 abuts on the peripheral edge portion of the insertion hole 53a of the upper wall 53 of the fixing cap 50 so that the stopper rod 30 is fixed to the housing 10 in a state where it is prevented from being removed. 50 is fixed to the housing 10 and the stopper rod 30 in a state of being removed. Also. On the base end side (lower end side) of the insertion portion 32, an O-ring groove that forms a circular ring groove shape having a predetermined depth over the entire circumferential direction is provided at a position that is a predetermined distance in the axial direction from the base end. A pair) is formed at predetermined small intervals in the axial direction. An O-ring R4 and an O-ring R5 are elastically fitted in the O-ring grooves of the insertion portion 32, respectively. In the state where the plug rod 30 is mounted on the housing 10, the O-ring R 4 and the O-ring R 5 mounted in the O-ring groove of the insertion portion 32 are elastic on the inner peripheral surface of the plug rod insertion portion 11 of the housing 10. In contact therewith, the stopper rod 30 is fixed so as not to move in the radial direction inside the housing 10 and is rotatable in the forward and reverse directions.

  The drive unit 33 projects outward so as to be coaxial with a substantially cylindrical rotation unit 33a having the same or substantially the same outer diameter as the insertion unit 32 and a predetermined angle in the circumferential direction of the rotation unit 33a. An arc ring-shaped restricting portion 33b that is integrally formed, and an arc flange-like shape or an arc-ring plate-like shape that projects outwardly so as to have the same outer diameter as the restricting portion 33b at the lower ends of the rotating portion 33a and the restricting portion 33b. Each end surface in the circumferential direction of the rotating portion 33a is a pair of regulating surfaces 33d. The restricting portion 33b is formed to project outward from the rotating portion 33a in a radial direction with a predetermined thickness (a predetermined protruding thickness in the radial direction). Here, when the restricting portion 33b rotates the plug rod 30 in the forward and reverse directions by a predetermined rotation angle, one of the one restricting surface 33d and the other restricting surface 33d constituting the circumferential end surfaces thereof is A component or component that prevents further rotation of the plug bar 30 by abutting against a restriction protrusion 17 integrally formed on the inner peripheral surface of the fitting portion 12 of the housing 10 and preventing further movement. is there. Accordingly, when one of the restriction surfaces 33d of the restriction portion 33b rotates the plug rod 30 from the valve closing position in the forward direction (the valve opening direction or the clockwise direction) by a predetermined rotation angle, the housing 10 When the other restricting surface 33d rotates the plug bar 30 in the reverse direction (the valve closing direction or the counterclockwise direction) from the valve opening position by a predetermined rotation angle. The extending angle range in the circumferential direction of the restricting portion 33b is set so as to come into contact with the other surface of the restricting protrusion 17 of the housing 10.

  Specifically, in the present embodiment, the restricting portion 33b is arranged approximately in the circumferential direction of the plug rod 30 in order to rotate the plug rod 30 forward and backward within a range of 90 degrees to the valve opening position and the valve closing position. Corresponding to this, the angular range of the gap between the pair of restricting surfaces 33 d is set to be about 120 in the circumferential direction of the plug rod 30. The restricting surface 33d of the restricting portion 33b is a flat surface extending in the vertical direction (the direction along the axial direction of the plug rod 30). On the other hand, the restricting protrusion 17 of the housing 10 has an arc ring shape with a predetermined angle (for example, about 90 degrees) in a plan view, as shown by a two-dot chain line in FIGS. 5 (b1) and 5 (b2), for example. At the same time, the projection can be a substantially arc block shape having the same cross-sectional shape as the planar shape and extending in the vertical direction by a predetermined height, and both end surfaces in the arc direction can be used as restricting surfaces. The height dimension of the restriction protrusion 17 of the housing 10 can be made substantially the same as the height dimension of the restriction portion 33b (and the height dimension of the restriction surface 33d). Further, the height range in which the restricting protrusion 17 is provided in the housing 10 is such that when the driving portion 33 of the plug bar 30 is accommodated and disposed in the fitting portion 12 and the O-ring mounting portion 14 of the housing 10 in a contact state. A predetermined height range from the step surface at the upper end position of the inner peripheral surface of the fitting portion 12 to the upper surface of the contact portion 33c of the drive portion 33 (and the height of the restricting projection 17 is also within the height range). The drive portion 33 (particularly the contact portion 33c) smoothly rotates without interfering with the restricting protrusion 17 during the rotation within a predetermined angle range. As a result, of the restricting surfaces 33d of the restricting portion 33b, one restricting surface 33d (the restricting surface 33d on the right side of FIG. 5B1) moves the plug rod 30 from the valve closing position (shown in FIG. 5B1). One surface (the upper or left surface in FIG. 5 (b1)) of the restricting projection 17 of the housing 10 when rotated by a predetermined rotation angle (90 degrees) in the positive direction (clockwise direction which is the valve opening direction). ) And the stopper rod 30 stops rotating at the valve opening position (the position shown in FIG. 5 (b2)). On the other hand, the other restricting surface 33d of the restricting portion 33b (the restricting surface 33d on the left side of FIG. 5 (b1)) moves the plug rod 30 in the reverse direction (in the valve closing direction) from the valve opening position (position of FIG. 5 (b2)). When it is rotated by a predetermined rotation angle (90 degrees) in a certain counterclockwise direction), it contacts the other surface (the lower or right surface in FIG. 5 (b1)) of the restriction projection 17 of the housing 10, The stopper rod 30 stops rotating at the valve closing position (position shown in FIG. 5 (b1)). That is, when the plug rod 30 attached to the housing 10 is rotated forward and backward, the pair of restricting surfaces 33d of the restricting portion 33b come into contact with the corresponding side surfaces of the restricting projections 17 of the housing 10, and further rotation is restricted. Accordingly, the stopper rod 30 is configured to be rotatable forward and backward within the predetermined angle range (within a range of about 90 degrees).

  The contact portion 33c extends over the entire length in the circumferential direction at the lower end between the pair of restriction surfaces 33d of the restriction portion 33b. That is, the abutting portion 33c is formed to project radially outward from the rotating portion 33a with a predetermined width (predetermined protruding width in the radial direction) that is the same as the predetermined thickness of the restricting portion 33b. Is flush with the outer peripheral surface of the rotating portion 33a and extends in the circumferential direction within the same angular range as the angular range between the pair of restricting surfaces 33d of the restricting portion 33b as shown in FIG. 5 (b). It is installed. The drive unit 33 is fitted into the upper end surface of the drive unit 33 (more precisely, the upper end surface of the regulating unit 33b) in a state where the drive unit 33 is completely inserted into the internal space of the fitting unit 12 and the O-ring mounting unit 14 of the housing 10. The outer surface of the drive unit 33 is in close contact with the inner peripheral surface of the fitting unit 12 and the O-ring mounting unit 14 so as to be slidable and rotatable. It has become. Further, as shown in FIG. 12 (b1), the total thickness dimension of the drive unit 33 is the same as the height dimension between the stepped surface of the fitting part 12 and the upper end edge of the water outlet 15a. With the portion 33 completely inserted into the housing 10, the lower end surface of the drive unit 33 (more precisely, the lower end surface of the restricting portion 33b and the lower end surface of the contact portion 33c) comes to a position where it overlaps the upper end edge of the water outlet 15a. It is like that.

  As shown in FIGS. 5C1 and 5C2, a pair of engaging protrusions 34 are opposed to the outer peripheral edge of the lower end surface of the drive unit 33 with a predetermined angle angle (180 degrees) in the circumferential direction. It is integrally formed at the position. The engaging protrusion 34 protrudes from the lower end surface of the drive unit 33 by a predetermined length along the axial direction thereof, and has a substantially rectangular parallelepiped block-like linear protrusion having a predetermined width dimension and a predetermined protrusion length (height dimension). It has a shape. In addition, the protrusion length of the engagement protrusion 34 is set to a dimension smaller than the height dimension of the water outlet 15a of the housing 10 (for example, a height dimension that is about ½ of the height dimension of the water outlet 15a). . The engaging protrusion 34 is a component or a component for drivingly connecting the movable disk 41 to the lower end of the stopper rod 30, and has an outer shape and a size that match with the engaging hole 41 b of the movable disk 41. As long as it is tightly fitted in the hole and connects the stopper rod 30 and the movable disk 41 so as not to rotate relative to each other in the circumferential direction, the outer shape and dimensions can be arbitrarily set. Further, the outer surface of the engagement protrusion 34 (the outer peripheral surface in the radial direction of the drive unit 33) has the same curved surface as the arc shape of the outer peripheral surface of the restricting unit 33b and the contact unit 33c of the drive unit 33.

[Valve member 40]
The valve member 40 is housed and accommodated in the internal space of the cylindrical portion 16 that is one axial end portion of the housing 10. Specifically, as shown in FIGS. 3 and 12, the valve member 40 includes a movable disk 41 made of a ceramic disk and a fixed disk 45 made of a ceramic disk. The movable disk 41 and the fixed disk 45 are housed and arranged at fixed positions in the internal space of the water flow portion 15 and the support cap mounting portion 16 (more precisely, the upper end side portion or the upper half portion of the support cap mounting portion 16) of the housing 10. The movable disk 41 is driven and connected to the distal end of the plug rod 30 inserted into the housing 10 via the engaging projection 34 so as to be rotatable forward and backward, and the lower moving disk 41 cooperates with the fixed disk 45. Thus, the valve opening operation and the valve closing operation are selectively performed in the water passage 15.

<Movable disc>
In detail, as shown in FIG. 6, the movable disk 41 has two fan-shaped portions 41x having the same central angle (about 90 degrees) in the shape of a fan plate and facing each other with an angle of 180 degrees. In a symmetrical arrangement, the central sides are connected to each other by a central portion 41y having a small plate shape having a predetermined size, thereby forming a predetermined different shape. On both sides of the movable disk 41 in the width direction, there are water passage recesses 41a having a substantially isosceles triangular shape or a fan shape, respectively, depending on the opposite side surfaces (two side surfaces) of the two fan-shaped portions 41x and the side surfaces in the width direction of the central portion 41y. Is formed. Each of the pair of water passage recesses 41a has a center angle (about 90 degrees) corresponding to the center angle of the fan-shaped portion 41x, and is symmetrically arranged in the direction perpendicular to the pair of fan-shaped portions 41x on the movable disk 41. Yes. The fan-shaped portion 41x and the central portion 41 have the same thickness, and both side surfaces in the thickness direction of the movable disk 41 are flat surfaces (except that the engaging recess 41b is provided on the upper surface side). Further, the other side surface (the lower surface in FIG. 6B) of the movable disk 41 in use is a polished surface that is in close contact with one side surface (upper surface) of the fixed disk 45, and has high smoothness and low frictional resistance. ing.

  As shown in FIG. 12, the movable disk 41 is disposed in a space facing the thickness portion (height direction portion) of the water outlet 15 a inside the water flow portion 15 of the housing 10. Is set to the same dimension as the height of the water outlet 15 a of the housing 10. In addition, the maximum opening length of each water-flowing recess 41a (which forms a flat fan shape) of the movable disk 41 is a dimension between the corners of the two fan-shaped parts 41x facing each other on the one side of the movable disk 41. The opening length is set to a dimension equivalent to the circumferential dimension (arc book) of the water outlet 15a of the housing 10. Specifically, since the movable disk 41 is arranged in close contact so that the outer peripheral surface thereof is slidable on the inner peripheral surface of the water flow portion 15, the maximum opening length of the water flow recess 41 a is set to the water flow rate. The size is set to be approximately the same as the arc book of the water outlet 15a on the inner peripheral surface side of the portion 15. Further, an angle of 180 degrees is formed at the outer peripheral portion (arc-shaped portion) of one side surface in the thickness direction of the fan-shaped portion 41x of the movable disk 41 (the upper surface that is the surface facing the lower surface of the drive portion 33 of the plug rod 30 in use). The engaging concave portions 41b having a substantially rectangular concave shape are formed at positions facing each other. The engaging recess 41b is a recess having a substantially rectangular cross section that extends to a depth in the middle of the fan-shaped portion 41x. As shown to Fig.6 (a), a pair of engaging recessed part 41b is each opened in the outer peripheral surface of the fan-shaped part 41x. The engaging recess 41b is for tightly fitting and holding the engaging protrusion 34 on the lower surface side of the driving portion 33 of the plug rod 30, and has a shape and a dimension corresponding to the engaging protrusion 34. . In other words, the engagement recess 41b has the same or substantially the same length, width, and thickness as the engagement protrusion 34.

  The movable disk 41 is inserted into the internal space of the water flow portion 15 of the housing 10 after the stopper rod 30 is attached to the housing 10 and before the support cap 20 is screwed onto the lower end of the housing 10. The engaging recess 41 b is fitted into a pair of engaging protrusions 34 on the lower surface side of the drive portion 33 of the plug rod 30 attached to the housing 10, and is disposed in the internal space facing the water outlet 15 a of the water flow portion 15. It is like that. In this state, the movable disk 41 is drivingly connected to the driving portion 33 of the plug rod 30 (by mutual engagement and locking by the concave and convex fitting of the engagement protrusion 34 and the engagement concave portion 41 b), and the plug rod 30. With forward / reverse rotation, the forward / reverse rotation is performed within a predetermined angle range (a range of about 90 degrees). Thus, in the housing 10, the pair of water passage recesses 41 a of the movable disk 41 are completely opposed to the pair of water outlets 15 a of the water passage portion 15, and the pair of water passage recesses. 41a is rotated forward and backward between a rotation position (valve closing position) completely opposed to the peripheral wall portion between the pair of water outlets 15a of the water flow portion 15.

<Fixed disk>
As shown in FIG. 7, the fixed disk 45 as a whole has a disk shape having the same diameter as the diameter of the movable disk 41 (the diameter between the two fan-shaped portions 41x). Further, a pair of inclined surfaces 46 are formed on the inner side of the circular outer peripheral edge on the other side surface (the lower surface side in FIG. 7C) of the fixed disk 45 in use. As shown in FIG. 7 (d), the pair of inclined surfaces 46 has a configuration in which the inner circular portion of the outer peripheral edge portion of the fixed disk 45 is divided into two by a line extending in the diametrical direction. It becomes the shape inclined surface. That is, one side surface in the thickness direction of the fixed disk 45 has a configuration in which a pair of inclined surfaces 46 are joined by the chord portions (diameter portions) of the arcs in the outer peripheral edge portion. Are inclined at a predetermined angle inwardly (in a direction sinking to a surface opposite to the inclined surface 46) in a direction (diameter direction) perpendicular to the bonding line from these bonding lines. On the other hand, as shown in FIG. 7A, one side surface (upper surface in FIG. 7C) of the fixed disk 45 in the use state is a circular flat surface and the other side surface (lower surface) of the movable disk 41. ) And a polished surface similar to the other side of the movable disk 41, and has high smoothness and low frictional resistance.

  The thickness dimension of the fixed disk 45 is set to the same thickness dimension as that of the movable disk 41 (or may be a slightly larger or smaller thickness dimension). That is, the fixed disk 45 is supported from the lower end edge position of the water outlet 15a (or the lower surface position of the movable disk 41 in the water flow section 15) in the water flow section 15 of the housing 10 as shown in FIG. Up to a position near the lower edge of the tapered surface of the cap mounting portion 16 (more precisely, a position where the upper end surface of the support cap 20 is disposed when the support cap 20 is completely screwed into the support cap mounting portion 16). Since it is arranged in the internal space that occupies the range, the thickness of the fixed disk 45 is set to the same dimension as the thickness dimension of the internal space. Further, a substantially triangular or substantially fan-shaped water passage hole 46 a extending from a position near the joining line of the pair of inclined surfaces 46 to the middle of the outer peripheral edge of the fixed disk 45 penetrates in the thickness direction of the fixed disk 45. Is formed. The pair of water passage holes 46 a of the fixed disk 45 are arranged such that their respective arc-shaped outer peripheral edges overlap the middle portions in the circumferential direction of the corresponding inclined surfaces 46. In this manner, the pair of inclined surfaces 46 are symmetrically disposed on the fixed disk 45 at positions facing each other at an angle of 180 degrees, and similarly, a pair of inclined surfaces 46 are disposed at positions facing each other at an angle of 180 degrees. The water passage holes 46a are arranged symmetrically. Furthermore, the center angle of the water passage hole 46 a of the fixed disk 45 is set to the same angle (about 90 degrees) as the center angle of the water passage recess 41 a of the movable disk 41. Further, on the outer peripheral surface of the fixed disk 45, small cubic locking projections 47 are integrally formed at positions facing each other at an angle of 180 degrees so as to protrude in the radial direction. The pair of locking protrusions 47 protrude from the outer peripheral surface of the fixed disk 45 at positions corresponding to the center position of the circular arc of the water passage hole 46 a of the fixed disk 45, and are arranged symmetrically on the outer peripheral surface of the fixed disk 45.

  The fixed disk 45 is attached to the housing 10 with the stopper rod 30, and after the movable disk 41 is driven and connected to the other end of the stopper rod 30, before the support cap 20 is attached to the support cap mounting portion 16 of the housing 10, Are formed on the inner peripheral surface of the cylindrical portion 16 of the housing 10 (a linear groove shape that can be freely fitted by sliding the locking protrusion in the axial direction of the housing 10). From the open end of the groove (not shown), it is inserted into the guide locking groove and locked so as not to rotate in the circumferential direction, thereby moving and guiding it to a predetermined position in the inner space of the support cap mounting portion 16. Further, in this state, the rotation of the fixed disk 45 in the circumferential direction is restricted and prevented by the locking of the locking protrusion 47 of the fixed disk 45 and the guide locking groove on the inner peripheral surface of the housing 10. Fixed disk 45 It is adapted to be housed and held in a state at a predetermined position in the axial direction and fixed at a predetermined angular position in the circumferential direction of the housing 10.

[Fixed cap]
The fixing cap 50 is configured to be detachably fitted to the plug rod insertion portion 11 of the housing 10. Specifically, as shown in FIGS. 3 and 8, the fixed cap 50 is formed by subjecting the predetermined synthetic resin material to injection molding or the like, thereby forming a circular ring-shaped or short-axis cylindrical base 51 and a shaft of the base 51. It consists of a male screw 52 threaded on the outer peripheral surface on one end side (lower end side) and a circular ring plate-like upper wall 53 that covers the upper end of the base, and is entirely a bottomed cylindrical or cap with a circular outer screw It is integrally formed so that it may become a shape. The base 51 has a predetermined inner diameter that is the same as the outer diameter of the plug rod insertion portion 11 of the housing 10, and the inner peripheral surface of the base 51 is slidably in close contact with the outer peripheral surface of the plug rod insertion portion 11. It is the inner peripheral surface. Further, the total axial length (height dimension) of the inner peripheral surface of the base 51 is set to be the same as the total axial length (height dimension) of the outer peripheral surface of the plug rod insertion portion 11 of the housing 10, and the fixing cap 50 is fixed. When the housing 10 is externally fitted from the upper end, the inner peripheral surface of the base portion 51 is slidably and closely fitted to the plug rod insertion portion 11, and the lower end surface of the base portion 51 is fitted to the plug rod insertion portion 11. Abutting on the step surface on the outer periphery side between the joint portion 12 and the lower surface of the upper wall 53 abuts on the upper end surface of the plug bar insertion portion 11. Furthermore, the outer diameter of the base 51 has the same outer diameter as the outer diameter of the mounting portion 121 of the valve accommodating portion 120, and when the base 51 is mounted on the mounting portion 121, the outer peripheral surface of the base 51 is the mounting portion 121. A cylindrical surface that is flush with the outer peripheral surface is formed. The male screw 52 is formed in a predetermined axial length portion on the lower end side of the base portion 51 (for example, an axial length portion of about ½, and the lower half portion of the base portion 51), and the male screw 122 of the valve housing portion 120. It is formed to have a male screw shape that can be screwed together. Therefore, the base portion 51 is a cylindrical portion (that is, a half portion or an upper half portion on the base end side of the base portion 51 that is a predetermined axial length portion on the base end side (for example, an axial length portion of about 1/2). , A grip portion when the fixed cap 50 is rotated), and a predetermined axial length portion on the lower end side (for example, an axial length portion of about ½, and a front end side half portion or a lower half portion of the base 51). The male screw 52 is included. The outer peripheral surface of the predetermined length portion on the base end side of the base 51 is subjected to uneven processing for the purpose of preventing slipping when the fixing cap 50 is rotated.

  Here, as shown in FIG. 1A, the top of the thread of the male screw 52 is the top surface of the fitting protrusion 13 of the housing 10 (the surface located at the outermost position in the radial direction of the fitting portion 12). And the bottom of the thread of the male screw 52 is arranged at the same position (on the same plane) as the outer peripheral surface of the fitting portion 12 as shown in FIG. In 51, the outer diameter of the axial length portion where the male screw 52 is provided and the thread dimension of the male screw 52 are set. On the other hand, an insertion hole 53a, which is a circular hole having a predetermined diameter, is formed through the center of the upper wall 53. The diameter of the insertion hole 53a of the upper wall 53 is set to be the same as the outer diameter of the insertion portion 32 of the plug rod 30, and the insertion portion 32 can be freely inserted by sliding into the insertion hole 53a of the upper wall 53. It is free to rotate. As shown in FIGS. 3 and 12, the upper wall 53 is disposed such that the upper surface thereof is positioned below the upper end of the base 51 by a predetermined minute distance, and the upper wall 53 is on the upper end side of the base 51. A circular recess having a minute depth is formed. Specifically, when the plug bar 30 is inserted and attached from the lower end side of the housing 10 and the fixing cap 50 is fitted and attached to the upper end side of the housing 10, the insertion portion 32 of the plug bar 30 is fitted. (Axis of the upper wall 53 with respect to the base 52 so that the lower edge of the joint groove 32a is disposed at the same position as the upper surface of the upper wall 53 (more precisely, the peripheral position of the insertion hole 53a on the upper surface of the upper wall 53). The arrangement position (in the direction or the height direction) is set. Further, when the plug bar 30 is inserted and mounted from the lower end side of the housing 10, and the fixing cap 50 is fitted and mounted on the upper end side of the housing 10, the fitting groove of the insertion portion 32 of the plug bar 30 is mounted. The depth of the circular recess formed by the upper wall 53 on the upper end side of the base 51 (ie, from the upper end of the base 51 to the upper wall 53 so that the upper edge of the upper wall 53 is arranged at the same position as the upper end of the upper wall 53. The dimension to the top surface) is set.

  On the other hand, the retaining ring 61 is elastically deformable to an outer diameter larger than the fitting groove 32a of the insertion portion 32 of the plug rod 30, and is shaped by its own elasticity (to an original circular ring shape). At the time of return, the inner diameter is the same as the inner diameter of the fitting groove 32a of the insertion portion 32, and the outer diameter is only a predetermined dimension from the fitting groove 32a (that is, only the dimension corresponding to the radius of the retaining ring 61). It is designed to protrude. When the stopper rod 30 is inserted from the lower end side of the housing 10 and is completely attached, and the fixing cap 50 is externally fitted to the upper end side of the housing 10 and fully attached, the fitting groove 32a of the insertion portion 32 is provided. Is disposed at a position immediately above the outer peripheral edge of the insertion hole 53a of the upper wall 53, and in this state, the retaining ring 61 is tightly fitted in the fitting groove 31a of the stopper rod 30, whereby the retaining ring 61 is fixed to the fixing cap 50. The stopper rod 30 is fixed to the housing 10 in a state of being in contact with the peripheral edge of the insertion hole 53a of the upper wall 53, and the fixing cap 50 is also fixed to the housing 10 and the stopper rod 30. It is supposed to be fixed in the state. In this state, the stopper rod 30 is fixed so as not to move in the axial direction with respect to the housing 10, while being within a predetermined angle range set in advance (due to the angular positional relationship between the restriction protrusion 17 and the restriction surface 33 d). It can freely rotate in the forward and reverse directions. Further, in this state, the fixed cap 50 is fixed so as not to move in the axial direction with respect to the housing 10, while being freely rotatable in the forward and reverse directions (that is, in a desired direction by a desired rotation angle and number of rotations). Is freely rotatable).

[Assembly method of resin water stop valve cartridge]
In order to assemble the resin water stop valve cartridge of the present embodiment configured as described above, from the completely disassembled state shown in FIG. The disk 41 is inserted from the lower end opening of the housing 10 and disposed in the water passage 15, and the engagement protrusion 34 of the plug bar 30 is fitted into the engagement recess 41 b of the movable disk 41 to move the plug bar 30. Drive-coupled to the disk 41. Further, after the fixed disk 45 is inserted from the lower end opening of the housing 10 and brought into contact with the movable disk 41 and accommodated in the support cap mounting portion 16 of the housing 10, the support cap 20 is screwed to the lower end of the housing 10. And fix. Thereby, as shown in FIG. 8A, all the parts of the resin water stop valve cartridge are assembled except for the fixing cap 50. Thereafter, the fixing cap 50 is externally fitted from the upper end of the housing 10, and in this state, the retaining ring 61 is tightly fitted into the fitting groove 32a of the plug rod 30 located immediately above the upper surface of the upper wall 53 of the fixing ring 50. The fixing cap 50 is attached to the upper end side of the housing 10. Thereby, as shown in FIG.8 (b), the resin water stop valve cartridge of this Embodiment by which all the components were assembled can be obtained.

[Assembly method to valve housing]
In order to assemble the resin water stop valve cartridge assembled as described above into the valve housing portion 120 of the faucet body 100, the operator holds the resin water stop valve cartridge with fingers, and as shown in FIG. The support cap 20 side of the water stop valve cartridge is inserted from the front end opening of the mounting portion 121 of the valve housing portion 120, and the fitting portion 12 of the housing 10 is inserted into the insertion portion 121 (in the space surrounded by the female screw 122). And the pair of fitting protrusions 13 are fitted in the pair of fitting grooves 123 of the insertion portion 121, respectively. At this time, the fitting protrusion 13 is positioned at a position facing the fitting groove 123 of the mounting portion 121, and slides into the fitting groove 123 while guiding the fitting protrusion 13 along the fitting groove 123. By inserting and fitting, the fitting portion 12 is caused to enter the inside of the mounting portion 121 in the axial direction. Then, when the tip of the base 51 of the fixing cap 50 (more precisely, the outermost position portion of the male screw 52) abuts on the tip of the mounting portion 121 (more precisely, the outermost position portion of the female screw 122). The fitting portion 12 is completely accommodated in the mounting portion 121. At this time, the entire fixing cap 50 is exposed to the outside of the mounting portion 121 (more precisely, the tip position of the base portion 51). Is in a state matching the tip position of the mounting portion 121). In this state, the male screw 52 of the fixing cap 50 is ready to be screwed into the female screw 122 of the mounting portion 121. From this state, the operator rotates the fixing cap 50 clockwise with fingers. Then, when the male screw 52 is screwed into and screwed into the female screw 122 of the mounting portion 121, the tip side half (the portion where the male screw 52 is formed) of the base 51 of the fixing cap 50 is attached to the mounting portion 121. Along with this, the housing 10 and the plug rod 30 fixed in the axial direction with respect to the fixed cap 50 also enter the mounting portion 121 in the axial direction. To do. Then, when the operator has completely screwed the male screw 52 of the fixing cap 50 into the female screw 122 of the mounting part 121 with the fingers, the tip of the gripping portion of the base side half of the base part 51 is attached. The abutment with the tip of the part 121 is completed, and the fastening fastening of the fixing cap 50 to the mounting part 121 is completed. As a result, as shown in FIG. 10, the assembly of the resin water stop valve cartridge to the valve accommodating portion 120 (by using only the force of the operator's fingers without using a tool) is completed.

[Valve action]
Next, the valve operation of the resin water stop valve cartridge of the present embodiment configured as described above will be described. First, as shown in FIG. 10, the resin water stop valve cartridge of the present embodiment is fitted to the handle 130 from the outside in a state of being attached to the valve accommodating portion 120, thereby fixing the handle 130. The valve operation is performed through this. Specifically, the fitting portion of the handle 130 of the valve accommodating portion 120 (which has a cylindrical shape with a spline groove formed on the inner peripheral surface) is spline-fitted to the spline fitting portion 31 of the plug rod 30 to fit the handle 130. A screw insertion hole provided at the tip of the joint is opposed to the female screw 31a of the spline fitting portion 31, and a predetermined male screw is screwed into the female screw 31a of the spline fitting portion 31 through the insertion hole. The handle 130 is fixed to the plug rod 30. As a result, the handle 130 is fixed to the water stop valve cartridge so that it cannot move in the axial direction and cannot rotate relative to the forward / reverse rotation direction. The assembly operation of the handle 130 to the resin water stop valve cartridge is completed. As a result, the user rotates the handle 130 in either the forward direction (the arrow direction in FIG. 10 or the clockwise direction in FIG. 11) or the reverse direction (counterclockwise direction in FIG. 11). The rotational torque is driven and transmitted to the plug rod 30, and the movable disc 41 is rotated relative to the fixed disc 45 within a predetermined angle range via the plug rod 30. A predetermined valve opening operation and valve closing operation are performed during

<When closed (valve closing)>
As shown in FIG. 12 (a1), in the water stop valve cartridge made of resin, the movable disk 41 is in the fully closed position when the water is not flowing. As shown in FIG. The water passage hole 46a of the fixed disk 45 is completely closed. In this state, the water that has entered the housing 10 from the lower end opening of the support cap 20 of the resin water stop valve cartridge is the water passage portion 15 of the housing 10. The water is completely blocked by the fixed disk 45 and the movable disk 41, and no water flows out from the water outlet 15 a of the water flow portion 15. In the fully closed position, the outer peripheral surfaces of the pair of fan-shaped portions 41 x of the movable disk 41 are arranged so as to completely face the pair of water outlets 15 a of the water flow portion 15 of the housing 10. The water outlet 15a is completely blocked, and the communication between the water outlet 15a of the water passage 15 and the water passage 46a of the fixed disk 45 is also blocked. At this time, as described above, the pair of fan-shaped portions 41x of the movable disk 41 are disposed so as to completely face the pair of water passage holes 46a of the fixed disk 45, thereby completely shielding the water passage holes 46a. doing. As a result, the water that has entered from the lower end opening of the housing 10 is completely blocked by the movable disk 41 at the water passage hole 46 a of the fixed disk 45.

<When opening the valve (opening operation)>
On the other hand, as shown in FIG. 12 (b1), in the water stop valve cartridge made of resin, the movable disk 41 is in the fully opened position when the water flows, and as shown in FIG. The water passage hole 46a of the fixed disk 45 is completely opened. In this state, the water that has entered the housing 10 from the opening of the support cap 20 at the lower end of the resin water stop valve cartridge is the water passage portion of the housing 10. 15 passes through the flow path in the water 15 and flows out from the water outlet 15a. That is, from the fully closed position, the stopper rod 30 is rotated by a predetermined angle (about 90 degrees) in the valve opening direction, and the movable disk 41 is rotated in the valve opening direction via the drive unit 33 and the engagement protrusion 34 to be movable. The pair of water passage recesses 41 a of the disk 41 are completely opposed to the pair of water outlets 15 a of the water passage portion 15 of the housing 10. At this time, one restricting surface 33d of the restricting portion 33b of the plug rod 30 contacts one side surface of the restricting protrusion 17 in the inner space of the housing 10, and the movable disk 41 is stopped at the fully valve-opened position. Rotation is prevented. Further, at this fully open position, the pair of water passage recesses 41 a of the movable disk 41 are disposed so as to completely face the pair of water outlets 15 a of the water passage portion 15 of the housing 10. The water outlet 15a and the water passage hole 46a of the fixed disk 45 are completely communicated with each other. At this time, as described above, the pair of water passage recesses 41a of the movable disk 41 are disposed so as to completely face the pair of water passage holes 46a of the fixed disk 45, so that the water passage holes 46a are completely covered. It is open. Thereby, the water from the water flow hole 20a of the support cap 20 passes through the water flow hole 46a of the fixed disk 45 and the water flow recessed part 41a of the movable disk 41 in the axial direction of the water flow part 15 at the maximum flow rate. 41 is changed from the axial direction of the water flow portion 15 to the radially outward direction by the side surface of the water flow recess portion 41a (by the plane “く” -shaped side surface of the fan-shaped portion 41x), as shown in FIG. The water is smoothly discharged from the water outlet 15a of the water flow portion 15 toward the outside at the maximum flow rate.

[Function and effect]
According to the resin water stop valve cartridge according to the present embodiment, and the water stop structure constituted by the resin water stop valve cartridge and the fitting groove 123 of the valve housing portion 120, the resin When assembling the water stop valve cartridge into the valve housing 120, the operator does not use a tool to tighten the water stop valve cartridge with a large torque as in the prior art, but the operator uses the fingers to hold the fixing cap 50 with his / her fingers. The assembly of the resin water stop valve cartridge to the valve accommodating portion 120 is completed simply by gripping and screwing and screwing into the mounting portion 121. Therefore, according to the present embodiment, when assembling the resin water stop valve cartridge to the mounting target portion, as shown in FIG. Therefore, it is not necessary to consider the load applied by tightening with such a tool. As a result, the resin water stop valve cartridge of the present embodiment takes into account only the torque and load when tightening with fingers (that is, completely considers the torque and load when tightening with conventional tools). Not)) The overall strength can be designed, and a structure having sufficient strength can be obtained even though the whole is made of resin. In addition, according to the present embodiment, it is not necessary to tighten with a tool when assembling the resin water stop valve cartridge to the mounting target portion, and therefore, torque management when tightening with a conventional tool is not required. As a result, assembly workability is improved.

  On the other hand, also in this embodiment, the rotating shaft of the handle 130 of the water tap 100 and the rotating shaft of the resin water stop valve cartridge attached to the valve housing portion 120 coincide with each other, and the rotating shaft of the female screw 122 of the valve housing portion 120 And the rotation axis of the male screw 52 of the fixed cap 50 assembled to the housing 10 coincide with each other. Therefore, when the handle 130 of the water tap 100 is rotated in the forward direction or in the reverse direction, the valve closing operation at this time is particularly performed. The torque in the counterclockwise direction should be a torque in a direction to loosen the male screw 52 of the fixing cap 50 tightened to the female screw 122 of the valve housing portion 120. At this time, in this embodiment, the fixing screw 50 is fixed. The housing 10 to which the cap 50 is attached is fitted into the fitting groove 123 of the mounting portion 120 and is prevented from rotating relative to the mounting portion 120. Therefore, in the present embodiment, even if the handle 130 of the water tap 100 is rotated in the closing direction (counterclockwise direction) for the valve closing operation, the rotational torque is the fitting of the valve housing portion 120. The engagement structure between the groove 123 and the fitting protrusion 13 of the housing 10 is completely blocked or blocked, and is not transmitted to the fixed cap 50 through the housing 10 at all. As a result, it is not necessary to assume a situation where the resin water stop valve cartridge is loosened or dropped from the valve housing portion 120 due to the opening / closing operation of the handle 130 of the water tap 10. It is possible to completely prevent a problem that the water stop valve cartridge is loosened from the valve housing portion 120 and leaks water. In addition, since there is no need to consider the looseness of the resin water stop valve cartridge due to the opening / closing operation of the handle 130, it is not necessary to tighten the resin water stop valve cartridge with respect to the valve housing portion 120 in this respect as well. The strength of the resin water stop valve cartridge (particularly, the strength of the housing 10 which is mechanically connected to the valve housing portion 120 and is subjected to a mechanical load) can be set relatively small. This can greatly contribute to the weight reduction and compactness of the entire apparatus.

  As described above, according to the water stop structure of the resin water stop valve cartridge according to the present embodiment, and the water stop structure of the resin water stop valve cartridge and the fitting groove 123 of the valve accommodating portion 120, the housing 10 As a material for the main parts such as the plug rod 30 and the like, a synthetic resin material is used without using a conventional metal material such as a brass material, and on the other hand, it is added at the time of opening / closing operation by the handle 130 of the water tap 100 ( It is possible to completely eliminate the influence of torque (in the direction of loosening the tightening in the conventional water stop valve cartridge), so that the resin water stop as before (considering the loosening due to torque during opening and closing operations) As a result of not having to tightly tighten the valve cartridge into the valve housing portion 120 of the water tap 100, the resin water stop valve cartridge is attached to the valve housing portion 120 of the water tap 100 as in the prior art. It is no longer necessary to use a tool, and can be easily and surely and smoothly attached to the valve accommodating portion 120 of the faucet 100 by manual work, and torque management at the time of mounting as in the past is also unnecessary. As a result, it is possible to make the main parts completely synthetic resin, lightening the synthetic resin, and problems inherent in conventional brass materials (strength reduction due to use and controlled substances) Elution) can be solved completely. Specifically, the resin water stop valve cartridge of the present embodiment can be about 1/3 the weight of a conventional metal water stop valve cartridge, and can be significantly reduced in weight. it can. In addition, since conventional metal water stop valve cartridges have the problem of rust and deterioration due to corrosion, the surface may be discolored or rust may flow out (mixed into the water flow). Since the resin water stop valve cartridge is completely made of resin and does not corrode like a metal material, these problems can be solved. In addition, conventional metal water stop valve cartridges may cause health effects due to leaching of components such as lead and cadmium contained in the metal (regulated by the RoHS directive) into water. However, the resin water stop valve cartridge of this embodiment is completely resin, and there is a risk that regulated components may leach out like metal materials. Therefore, these problems can be solved. In addition, conventional metal water stop valve cartridges have a dezincing phenomenon that occurs when brass as a metal material comes into contact with water, causing zinc to dissolve and the brass to deteriorate. However, since the resin water stop valve cartridge of the present embodiment is completely made of resin, the problem caused by the dezincification phenomenon can be solved. Furthermore, since the resin water stop valve cartridge of the present embodiment can be provided with sufficient strength in spite of the formation of various parts by resin, the overall product dimensions can be compared with the conventional metal water stop valve cartridge. The dimensions can be equivalent, and even in this case, performance equivalent to that of a conventional metal water stop valve cartridge can be exhibited.

[Effects during assembly and removal]
In addition to the above-described effects, according to the water stop structure of the resin water stop valve cartridge according to the present embodiment and the resin water stop valve cartridge and the fitting groove 123 of the valve housing portion 120, The following effects can also be exhibited. Specifically, the resin stop valve cartridge according to the present embodiment is generally attached to a predetermined attachment target portion 120A of the faucet (corresponding to the valve accommodating portion 120 in the case of FIGS. 9 and 10). To explain, FIG. 14 shows an outline of an assembling method over time when the resin water stop valve cartridge according to the present embodiment is assembled to the predetermined attachment target portion 120A of the water faucet. As shown to (a), the support cap 20 side of the resin water stop valve cartridge is formed by the inner peripheral surface of the mounting portion 121 for mounting the resin water stop valve cartridge formed on the mounting target portion 120A. The cylindrical housing space (corresponding to the cylindrical housing space) is inserted into the housing space through the opening (upper end in FIG. 14), and then the fitting portion 12 of the housing 10 is inserted into the mounting target portion 120A. Insert into the containment space Both the pair of fitting protrusions 13 are respectively positioned in a pair of fitting grooves 123A (corresponding to the pair of fitting grooves 123) formed on the peripheral surface of the accommodation space of the attachment target portion 120A, and the fitting is performed. When inserted and fitted while guiding along the mating groove 123A, the tip of the base 51 (the lower end in FIG. 14) of the fixed cap 50 comes into contact with the opening end (the upper end) of the accommodation space of the attachment target portion 120A. Only the fitting part 12 is in a state of being completely accommodated in the accommodation space of the attachment target part 120A. In this state, the lower end position (outermost position) in the axial direction of the male screw 52 of the fixing cap 50 is screwed and formed on the inner peripheral surface of the accommodation space of the attachment target portion 120A (corresponding to the female screw 122). In the axial direction upper end position (outermost position), and the male screw 52 is ready to be screwed into the female screw of the attachment target portion 120A. From this state, when the male screw 52 of the fixing cap 50 is screwed into the female screw of the attachment target portion 120A, the portion where the male screw 52 of the base 51 of the fixing cap 50 is formed is the accommodation space of the attachment target portion 120A. In the axial direction, the housing 10 and the plug rod 30 also enter the interior of the accommodation space of the attachment target portion 120A in the axial direction. Then, as shown in FIG. 14B, when the male screw 52 of the fixing cap 50 is completely screwed into the female screw of the attachment target portion 120A, the tip of the gripping portion of the base 51 becomes the accommodation space of the attachment target portion 120A. When the fixing cap 50 is screwed into the attachment target portion 120A, the assembly of the resin water stop valve cartridge to the attachment target portion 120A is completed. That is, according to the present embodiment, as shown in the change (or transition) of the position from the state of FIG. 14A to the state of FIG. 14B, the fixing cap 50 is screwed onto the attachment target portion 120A. The housing 10 (and the components in the housing 10) can be automatically inserted into a predetermined position in the accommodation space of the attachment target portion 120A and accommodated and held in conjunction with (or synchronized with) the entry operation. The operation of attaching the stop valve cartridge to the mounting target portion 120A can be completed only by rotating the fixing cap 50 in the tightening direction (clockwise direction) with the fingers of the finger, and the workability can be greatly improved. it can.

  On the other hand, in order to remove the water stop valve cartridge of the present embodiment from the faucet attachment target portion 120A, first, as shown in FIG. 14 (b), the operator holds the fixing cap 50 with fingers. Then, it rotates counterclockwise, and the male screw 52 is screwed out of the female screw of the attachment target portion 120A. Then, as the fixing cap 50 moves away from the attachment target portion 120A in the axial direction by the retraction operation of the male screw 52 (in conjunction with and in synchronization with this), the housing 10 to which the fixing cap 50 is fixed is When pulled out (or extracted) from the mounting target portion 120A and the tip of the base 51 abuts against the opening periphery of the accommodation space of the mounting target portion 120A (that is, the male screw 52 is completely removed from the female screw of the mounting target portion 120A). The removal work of the resin water stop valve cartridge with respect to the attachment target portion 120A is completed. That is, according to the present embodiment, as shown in the change (or transition) of the position from the state of FIG. 14B to the state of FIG. The housing 10 (and the components in the housing 10) can be automatically extracted and removed from a predetermined position in the accommodation space of the attachment target portion 120A in conjunction with (or synchronized with) the operation, and can be fixed by the operator's fingers. Only by rotating in the direction of loosening the cap 50 (counterclockwise direction), the operation of removing the water stop valve cartridge from the mounting target portion 120A can be completed, and the workability can be greatly improved.

  In order to explain the superiority of the assembling operation and the removing operation of the resin water stop valve cartridge according to the present embodiment described above, the configuration shown in FIG. 15 is adopted as the configuration of the resin water stop valve cartridge. explain. The resin water stop valve cartridge 200 shown in FIG. 15 is assumed as a comparative example only for the purpose of comparing the superiority of the resin water stop valve cartridge according to the present embodiment. It is not described as prior art. Specifically, in the resin water stop valve cartridge according to the present embodiment, as described above, the fixing cap 50 is integrally attached to the housing 10 to tighten or loosen the fixing cap 50 with respect to the attachment target portion 120A. Only the housing 10 can be housed or removed in conjunction with the attachment target portion 120A, and the attachment work and the removal work of the entire resin water stop valve cartridge to the attachment target portion 120A can be greatly simplified. It has a configuration. On the other hand, as shown in FIG. 15, when assuming the configuration of the resin water stop valve cartridge 200 that does not include such a fixing cap, first, the resin cartridge 200 is attached to the attachment target portion 300 so that it cannot be removed. In order to fix, as shown in FIG. 15, the attachment target portion 300 includes a base portion 310 that houses a resin water stop valve cartridge, and the resin water stop valve after the resin water stop valve cartridge is housed in the base portion 310. It is necessary to provide a lid 320 that presses and fixes the valve cartridge from above.

  In this case, in order to assemble the resin water stop valve cartridge 200 to the attachment target portion 300, as shown in FIG. 15A, with the lid 320 removed from the base portion 310 of the attachment target portion 300, The resin water stop valve cartridge 200 is accommodated in the internal space, and then, as shown in FIG. 15B, a lid 320 is fastened and fixed to the upper end of the base portion 310 (by screwing or the like). It is necessary to support the resin water stop valve cartridge 200 accommodated in the housing from the upper side by the lid 320 and to fix and hold the resin water stop valve cartridge 200 to the base portion 310. Further, in order to remove the resin water stop valve cartridge 200 from the attachment target portion 300, the lid 320 is removed from the base 310 of the attachment target portion 300 from the state shown in FIG. It is necessary to remove the water stop valve cartridge 200. Therefore, in the case of the resin water stop valve cartridge according to the comparative example, it is necessary to handle the resin water stop valve cartridge 200 and the lid 310 separately in any of the assembling work and the detaching work from the attachment target portion 300. In this sense, the amount of work is doubled compared to the resin water stop valve cartridge according to the present embodiment, the work becomes complicated, and workability is inferior. Therefore, at least also from the viewpoint of workability, the resin water stop valve cartridge of the present embodiment exhibits a distinctive effect by the configuration of the housing 10 and the fixed cap 50. .

[Materials used]
By the way, in the resin water stop valve cartridge of the present invention, the housing 10 is made of any synthetic resin having relatively high strength in the synthetic resin material, that is, the PSS resin, in addition to the integral molding of the PSS resin. May be integrally formed with another synthetic resin that can ensure the same mechanical strength (tensile strength of about 150 MPa and bending strength of about 215 MPa). However, it is most preferable to use PSS resin from the viewpoint that in addition to mechanical strength, dimensional accuracy can be ensured by precision moldability and further mechanical strength can be improved by ensuring dimensional accuracy. . Besides, the stopper rod 30 is not integrally formed with the POM resin, but is made of a synthetic resin having a relatively low friction coefficient in the synthetic resin material, that is, a low sliding resistance (0.15 equivalent to that of the POM resin). Alternatively, it may be integrally formed with another synthetic resin that can ensure a certain degree of friction coefficient.

  Further, in the resin water stop valve cartridge of the present invention, even if the fixing cap 50 is not fixed to the housing 10 so that it cannot move in the axial direction (particularly, cannot be removed) with the retaining ring 61, At the time of screwing into the mounting part 121, at least the housing 10 can be interlocked and pushed into the internal space of the mounting part 121 of the valve housing part 120. Therefore, at least as a configuration in which the retaining ring 61 is omitted and the fixing cap 50 is simply attached to the proximal end side of the housing 10 (without providing a member for axial removal such as the retaining ring 61), In the direction in which the housing 10 is pressed, the housing 10 is operatively connected (that is, when the fixing cap 50 moves in the direction in which the housing 10 is pressed in the axial direction, the housing 10 can be pressed in the pressing direction). It can also be configured. Even in this case, there is no problem in mounting the resin water stop valve cartridge in the valve housing portion 120 of the faucet body 100. However, when the resin stop valve cartridge is removed from the valve housing part 120 of the faucet body 100, a retaining member such as the retaining ring 61 is used to pull the housing 10 together with the fixing cap 50 from the valve housing part 120. A configuration is necessary in which the fixing cap 50 is fixed to the housing 10 so as not to be able to be removed in the axial direction.

DESCRIPTION OF SYMBOLS 10: Housing, 11: Plug stick insertion part, 12: Fitting part, 13: Fitting protrusion 14: O-ring mounting part, 15: Water flow part, 15a: Water flow hole, 16: Support cap attaching part 20: Support cap, 21: base, 22: screwing portion 30: plug rod, 31: spline fitting portion, 32: insertion portion, 32a: fitting groove 33: driving portion, 33a: rotating portion 33a: regulating portion 33b : Restriction part, 33c: contact part 33d: restriction surface, 34: engagement protrusion 40: valve member, 41: movable disk, 41a: water passage recess, 41b: engagement recess 41x: fan-like part, 41y: central part 45 : Fixing disk, 46: Inclined surface, 46a: Water passage hole, 47: Locking protrusion 50: Fixing cap, 51: Base, 52: Male screw, 53: Upper wall 100: Faucet body, 110: Perimeter wall, 120: Valve housing part 121: mounting part, 122: female screw, 123: fitting Groove, 130: handle

Claims (6)

A water stop structure for a water faucet comprising a resin water stop valve cartridge and a valve housing portion of a water faucet for housing and mounting the resin water stop valve cartridge,
The resin water stop valve cartridge is:
A housing in which all parts are integrally molded from a synthetic resin material;
All the parts are integrally molded from a synthetic resin material, are accommodated coaxially in the housing and extend in the axial direction of the housing, and a plug bar that protrudes from one axial end of the housing in the axial direction;
The housing is housed and arranged so as to be rotatable, and is connected to the other end in the axial direction of the plug rod so that the plug rod rotates in the forward and reverse directions within a predetermined angular range. A movable disk made of a ceramic disk rotating in the opposite direction;
A fixed disk made of a ceramic disk that is non-rotatably accommodated inside the housing and performs valve opening and closing operations with the movable disk;
A fixing member attached so as to be rotatable in forward and reverse directions with respect to the housing at one end side in the axial direction of the housing;
The housing has a linear convex shape extending in the axial direction on the peripheral surface of the predetermined portion of the housing at a predetermined portion adjacent to the axial tip of the fixing member on the one axial end side where the fixing member is attached. Or, it has a valve-side fitting part that forms a recess,
The fixing member has a valve-side screw portion at a portion on the axial front end side,
The valve accommodating portion is
A cylindrical mounting portion that can accommodate the water stop valve cartridge in the interior from the tip opening;
A valve housing portion side screw portion that is formed on a peripheral surface of the mounting portion and is freely screwable with a screw portion of a fixing member of the water stop valve cartridge;
In a predetermined angular position on the peripheral surface of the mounting portion, a linear concave shape or a concave shape extending along the axial direction of the mounting portion is formed, and the relationship between the valve side fitting portion of the water stop valve cartridge housing and the concave and convex portions The water stop structure of the faucet, comprising: a valve housing portion side fitting portion that prevents the housing of the water stop valve cartridge from rotating relative to the mounting portion. . In the resin stop valve cartridge,
The fixing member is composed of a substantially cylindrical fixing cap that is externally fitted to a portion on one end side in the axial direction of the housing.
The valve-side fitting portion of the housing has an axial direction on the outer peripheral surface of the portion of the housing at a portion that is continuous with or spaced from the axial tip of the fixed cap on the one axial end side where the fixed cap is attached. It consists of a fitting protrusion consisting of a linear protrusion extending to
The valve-side screw portion of the fixed cap consists of a male screw formed on the outer peripheral surface of the axially distal end portion of the fixed cap,
In the valve housing part,
The valve housing part side screw part is formed on the outer peripheral surface of the mounting part, and includes a female screw that can be screwed with a male screw of a fixing cap of the water stop valve cartridge,
The valve accommodating portion side fitting portion is formed on an inner peripheral surface of the mounting portion, and includes a fitting groove that can be fitted by sliding on a fitting protrusion of a housing of the water stop valve cartridge. The water stop structure for a faucet according to claim 1. The fixing cap is fitted and attached to a portion on one axial end side of the housing, and a base portion in which the male screw is formed on the outer peripheral surface of the distal end portion thereof, and a circular shape on the proximal end side of the base portion. An upper wall formed with an insertion hole for closing the opening and inserting one axial end of the plug rod;
The plug bar forms a circular fitting groove on the outer peripheral surface of the one axial end portion,
The fitting groove of the plug bar is arranged at a position where the lower edge thereof coincides with the peripheral position of the insertion hole on the upper surface of the upper wall of the fixing cap attached to the housing.
Furthermore, a stopper ring that can be elastically fitted into the fitting groove of the plug bar is provided,
The fixing cap is mounted on the housing, and the retaining ring is fitted into a fitting groove at one axial end of the plug rod protruding from the housing, whereby the housing, the plug rod, and the fixing cap The water stop structure for a faucet according to claim 2, wherein the two are fixed so as not to move in the axial direction. A resin water stop valve cartridge for use in a water stop structure of a water faucet comprising a resin water stop valve cartridge and a valve housing portion of a water faucet for housing and mounting the resin water stop valve cartridge,
A housing in which all parts are integrally molded from a synthetic resin material;
All the parts are integrally molded from a synthetic resin material, are accommodated coaxially in the housing and extend in the axial direction of the housing, and a plug bar that protrudes from one axial end of the housing in the axial direction;
The housing is housed and arranged so as to be rotatable, and is connected to the other end in the axial direction of the plug rod so that the plug rod rotates in the forward and reverse directions within a predetermined angular range. A movable disk made of a ceramic disk rotating in the opposite direction;
A fixed disk made of a ceramic disk that is non-rotatably accommodated inside the housing and performs valve opening and closing operations with the movable disk;
A fixing member attached so as to be rotatable in forward and reverse directions with respect to the housing at one end side in the axial direction of the housing;
The housing has a linear convex shape extending in the axial direction on the peripheral surface of the predetermined portion of the housing at a predetermined portion adjacent to the axial tip of the fixing member on the one axial end side where the fixing member is attached. Or, it has a valve-side fitting part that forms a recess,
The resin-made water stop valve cartridge, wherein the fixing member has a valve-side screw portion at a portion on the tip side in the axial direction. A resin water stop valve cartridge for use in a water stop structure of a water faucet comprising a resin water stop valve cartridge and a valve housing portion of a water faucet for housing and mounting the resin water stop valve cartridge,
A housing in which all parts are integrally molded from a synthetic resin material;
All the parts are integrally molded from a synthetic resin material, are accommodated coaxially in the housing and extend in the axial direction of the housing, and a plug bar that protrudes from one axial end of the housing in the axial direction;
The housing is housed and arranged so as to be rotatable, and is connected to the other end in the axial direction of the plug rod so that the plug rod rotates in the forward and reverse directions within a predetermined angular range. A movable disk made of a ceramic disk rotating in the opposite direction;
A fixed disk made of a ceramic disk that is non-rotatably accommodated inside the housing and performs valve opening and closing operations with the movable disk;
A fixing cap attached so as to be rotatable in forward and reverse directions with respect to the housing at one axial end side of the housing;
The housing has a linear convex portion extending in an axial direction on an outer peripheral surface of the adjacent portion of the housing at an adjacent portion adjacent to an axial tip of the fixed cap on the one axial end side to which the fixing cap is attached. A pair of fitting protrusions having a shape are provided at a predetermined angle in the circumferential direction,
The resin stop valve cartridge according to claim 1, wherein the fixing cap has a male screw at a portion on the tip side in the axial direction. A mounting structure for a resin water stop valve cartridge for mounting the resin water stop valve cartridge to the valve housing portion of the faucet,
A housing in which all parts are integrally molded from a synthetic resin material;
A cylindrical fixing member that is externally fitted to and mounted on one axial end of the housing and is rotatable in the forward and reverse directions with respect to the housing;
The housing has a linear protrusion extending in the axial direction on the outer peripheral surface of the part of the housing at a part of the one end side in the axial direction to which the fixing member is attached. It has a valve-side fitting part that forms a part shape or a concave shape,
The fixing member has a valve-side screw portion formed at a site on the tip side in the axial direction,
The valve-side fitting portion of the housing can be freely fitted with a valve-housing-side fitting portion formed in the valve housing portion of the faucet,
A mounting structure for a resin water-stop valve cartridge, wherein the valve-side screw portion of the fixing member is screwable with a valve-housing-side screw portion formed in the valve housing portion of the water faucet.

Images