JP5736587B2 - Handle stopper mechanism - Google Patents

Description

  The present invention relates to a mixing faucet in which an inner housing is inserted inside a cylindrical outer housing, and in particular, a stopper member is attached to the end of the inner housing protruding in the axial direction from the outer housing, and the stopper member is provided. The present invention relates to a stopper mechanism for a handle that regulates rotation of the handle by bringing a contact portion provided on the handle into contact with the stopper portion.

  Conventionally, a hot and cold water mixing faucet has a housing that forms a body body of the faucet body integrally formed of a metal casting, and the inner wall surface has a water-side, hot water-side primary channel and secondary-side mixed water. A flow path wall that forms the flow path is integrally provided, and a mixing valve unit that adjusts the temperature of the mixed water by changing the mixing ratio of hot water, a switching valve unit that performs flow path switching, etc. The one with the enclosed structure was common.

  However, in the case of this hot and cold water mixing faucet, the flow path wall having a complicated structure must be integrally provided on the inner wall surface when manufacturing a metal housing, which increases the number of manufacturing steps and technically. There is a problem with many difficulties.

  Under such circumstances, the faucet body housing has a double housing structure of a cylindrical outer housing and an inner housing, and a water side channel as a primary side channel between the housings, a hot water side Japanese Patent Application Laid-Open No. 2004-133867 proposes a mixed water faucet in which a mixed water channel is formed as a flow channel and a secondary channel by a seal member arrangement pattern.

By the way, when the housing of the faucet body has such a double housing structure, there is a problem of how to configure a stopper mechanism for restricting rotation of a handle (for example, a temperature control handle).
When the faucet housing is made of a single metal casting as described above, conventionally, the stopper mounting portion having a convex portion outward in the radial direction (perpendicular to the axis) is cut on the metal casting housing itself. The stopper member on the handle side is assembled in the fitted state directly by processing, but in this case, the stopper mounting portion is formed by cutting, which increases the overall cost.

On the other hand, when the faucet body is a mixed faucet having a double housing structure of an outer housing and an inner housing, the outer end of the inner housing protruding in the axial direction from the outer housing is radially (axially perpendicular) outside. It is conceivable that a stopper mounting portion having a convex portion toward the side is formed integrally, and a stopper member on the handle side is assembled in a fitted state there, but in this case, the end in the axial direction is connected to the outer housing. When the inner housing is inserted into the outer housing from the position protruding to the outside, it must be designed so that the convex portion of the stopper mounting portion does not interfere with the outer housing, which increases design constraints.
Especially when the convex part of the stopper mounting part is larger than the smallest diameter part of the inner surface of the outer housing, the inner housing should be inserted into the outer housing until the axial end of the inner housing protrudes from the outer housing. Can not be.

In addition, there exists what was disclosed by the following patent document 2 as a prior art relevant to this invention.
However, the one disclosed in Patent Document 2 is different from the present invention in that a groove is provided on the outer surface of the end portion of the inner housing protruding from the outer housing, and a stopper mounting member is not attached thereto.

Japanese Patent No. 2695364 Japanese Patent Laid-Open No. 9-60060

  In the mixed faucet having a double housing structure in which the faucet body has an outer housing and an inner housing, the present invention can be easily configured without any particular design restrictions. The present invention has been made for the purpose of providing a stopper mechanism for a handle that can be used.

Thus, according to the first aspect of the present invention, a stopper member is attached to an end portion of the cylindrical inner housing that is inserted in the axial direction inside the cylindrical outer housing and protrudes from the outer housing in the axial direction. A handle stopper mechanism in a mixed water faucet having a structure in which the handle is restricted by abutting the handle against a stopper portion of a member, along a circumferential direction on an outer surface of the protruding end portion of the inner housing. A second positioning convex portion or a second positioning convex portion that fits in the axial direction and engages with the first positioning concave portion or convex portion for positioning in the rotational direction provided in the stopper member. A stopper mounting member having a recess is fitted into the groove in a direction perpendicular to the axis, fixed to the end of the inner housing in the rotational direction and the axial direction, and mounted in a state of projecting radially outward from the outer surface of the end. And remove the stopper By fitting the stopper member in a fixed state in the rotational direction with respect to the member in the axial direction, is attached to the protruding end of the housing, the said groove and said projection of said housing said stopper mounting member While the third positioning protrusion or recess for positioning in the rotational direction with respect to the end is provided, the stopper mounting member is provided with a corresponding fourth positioning recess or protrusion. The stopper mounting member is fixed in the rotational direction with respect to the end of the inner housing by the concave-convex engagement between the positioning convex portion or the concave portion and the fourth positioning concave portion or the convex portion. The member includes an internal fitting portion with respect to the stopper member .

According to a second aspect of the present invention, in the first aspect of the present invention, the end portion of the inner housing is configured such that a component housed in the inner housing is in a fixed state therein, and an outer diameter is equal to or greater than the end portion. The fixing nut is screwed together.

According to a third aspect of the present invention, in the second aspect , the stopper member has a cylindrical shape and has an inner diameter larger than that of the fixing nut.

According to a fourth aspect of the present invention, in any one of the first to third aspects, a claw is provided on one of the stopper mounting member and the stopper member, and a latching portion for latching the claw in the axial direction is provided on the other. The stopper member is prevented from being separated from the stopper mounting member in the axial direction by the hook of the claw with respect to the hook portion.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the stopper mounting member is a member in which a part of the circumferential direction forms a partial annular shape having an opening shape, and the stopper member is in both the forward and reverse directions. The stopper mounting member of the contact surface of the stopper member with the first positioning concave portion or the convex portion at the second positioning convex portion or the concave portion of the stopper mounting member during rotation in any direction. A contact surface corresponding to the first positioning concave portion or the convex portion of the stopper member comes into contact with a contact surface on the side facing away from the circumferential end of the stopper. The second positioning convex portion or concave portion and the corresponding positioning surface of the stopper member are not contacted with the corresponding positioning surface of the first positioning concave portion or convex portion of the stopper member. The size and shape of the first positioning recess or protrusion are determined. It is characterized by.

Effects and effects of the invention

As described above, the present invention provides a groove along the circumferential direction on the outer surface of the end portion of the inner housing that protrudes from the outer housing in the axial direction, and a stopper mounting member is fitted into the groove so that the end of the inner housing A stopper mounting member is mounted in a state that is fixed in the rotational direction and the axial direction and protrudes outward in the radial direction, and the stopper member is fitted to the stopper mounting member in the axial direction so as to rotate integrally with the stopper mounting member. Therefore, this is attached to the protruding end of the inner housing.
Here, the stopper mounting member can have an outer diameter larger than the minimum inner diameter of the inner surface of the outer housing.

  According to the present invention, the stopper mounting member is separated from the inner housing, and is fitted into the groove of the end of the inner housing protruding from the outer housing, so that the stopper member is provided there. By providing the stopper mounting member having the convex portion on the inner housing, the design freedom of the inner housing and the outer housing is not restricted, and it is possible to design them in an arbitrary shape.

In the present invention, after the inner housing is inserted into the outer housing and its end protrudes outward from the outer housing, the stopper mounting member can be provided in a form protruding radially outward from the end. .
Further, the stopper member can be attached by fitting the stopper member to the stopper attaching member in the axial direction.
By doing in this way, a stopper attachment member and a stopper member can be comprised by a large diameter, and stopper strength can be made high intensity | strength.

In the present invention, a third positioning protrusion or recess for positioning the stopper mounting member in the rotational direction with respect to the protruding end of the inner housing is provided on the groove side, while the stopper mounting member side A fourth positioning concave portion or convex portion corresponding to is provided, and the stopper mounting member is fixed in the rotational direction with respect to the end portion of the inner housing by engaging the concave and convex portions .
In this way, the stopper mounting member can be provided in a fixed state in the rotational direction with respect to the end portion of the inner housing with a simple configuration.

The stopper mounting member Contact Ku includes an inner fitting portion to the stopper member.
If it does in this way, since the inner fitting part of a stopper attachment member will be in the state fitted in the stopper member, it will prevent effectively that a stopper attachment member remove | deviates from the edge part and stopper member which the inner housing protruded.

According to a second aspect of the present invention, a fixing nut having an outer diameter equal to or greater than that of the end of the inner housing is screwed to the end of the inner housing in accordance with the second aspect. The effect is great when applied to what is being done.

  In terms of assembly, it is convenient to fit the stopper member in the axial direction with the stopper mounting member in a state where the fixing nut is screwed to the end of the inner housing in advance. When the outer diameter of the stopper mounting member is equal to or smaller than the outer diameter of the end of the inner housing, it is difficult to fit the stopper member having a cylindrical shape in the axial direction with respect to the stopper mounting member.

However, in the present invention, the stopper mounting member can be easily made larger in diameter than the end of the inner housing. In this case, even when the stopper member is a cylindrical member according to claim 3 , it is more than the fixed nut. By increasing the inner diameter, the stopper member can be fitted to the end of the inner housing in an externally fitted state even with the fixed nut attached, and can be easily fitted axially to the stopper mounting member. Can do.

According to a fourth aspect of the present invention, a claw is provided on one of the stopper mounting member and the stopper member, and a latching portion for latching the claw in the axial direction is provided on the other, and the stopper member is mounted on the stopper by latching the claw on the latching portion. In this way, the stopper member is fixed in the axial direction with respect to the stopper mounting member, so that the stopper member is separated from the stopper member in the axial direction. It is possible to effectively prevent inconveniences such as rubbing with the handle when operating the handle and generating abnormal noise there.

Next, according to claim 5 , the stopper mounting member is formed as a member in which a part of the circumferential direction forms a partial annular shape, and in this case, when the stopper member rotates in both the forward and reverse directions, The force is always applied to the stopper mounting member on the side where it is more strongly fitted to the end of the inner housing in the direction perpendicular to the axis. According to claim 5 , the force from the stopper member Accordingly, it is possible to effectively prevent the stopper mounting member from detaching from the end portion of the inner housing outward in the direction perpendicular to the axis due to the opening shape.

  In other words, by making the stopper mounting member a partial ring shape, it is possible to easily fit the end of the inner housing to the end of the inner housing in the direction perpendicular to the axis, while the stopper mounting member is located on the inner side due to the opening shape. It is possible to reliably prevent separation from the end of the housing in the direction perpendicular to the axis.

It is a perspective view of the mixing faucet provided with the stopper mechanism of the handle of one embodiment of the present invention. It is the fragmentary sectional view which notched and showed a part of mixing tap of FIG. 1 in the horizontal direction. It is sectional drawing of the perpendicular direction of the mixing faucet of FIG. It is the figure which expanded and showed the mixing valve unit of FIG. 3 with the peripheral part. It is the figure which decomposed | disassembled and showed a part of mixing valve unit of FIG. It is the figure which decomposed | disassembled and showed the connection part of the mixing valve unit of FIG. 4, and a temperature control handle. It is the figure which showed the assembly | attachment procedure of the stopper mechanism of the handle | steering_wheel in the embodiment. (A) It is the figure which showed the stopper member in the embodiment with the safety button. (B) A cross-sectional view of FIG. It is the figure which showed the stopper attachment member in the same embodiment. It is the perspective view which decomposed | disassembled and showed the stopper attachment member and stopper member in the same embodiment. FIG. 5 is a cross-sectional view of FIG. 4 illustrating an effect of the handle stopper mechanism according to the embodiment. It is the figure which showed the modification of the stopper attachment member and stopper member in the embodiment. It is the figure which expanded and showed the switching valve unit of FIG. 3 with the peripheral part. It is a figure of the inner housing in the embodiment. It is sectional drawing which decomposed | disassembled and showed the outer housing and the inner housing in the same embodiment. It is a disassembled perspective view of the connection part of the hot water inflow opening on the outer housing side and the hot water inflow opening on the inner housing side of the same embodiment. It is sectional drawing of the connection part of the hot water inflow opening by the side of an outer housing and the hot water inflow opening of an inner housing as a principal part in the embodiment. It is a figure of the spacer member in the embodiment. It is a figure of the connection member in the embodiment. It is a figure of the fixed clip in the embodiment. It is the figure which showed the assembly | attachment procedure of the mixing faucet of the embodiment.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a mixing faucet with a wall of this embodiment, and has a faucet body 12 having a longitudinal shape in the left-right direction in the figure.
From the lower surface of the faucet body 12, a substantially L-shaped water discharge pipe 16 having a water discharge port 14 at the tip extends, and from the back, a shower-side outlet 76 protrudes rearward. A shower elbow 20 is connected to the main body.
A shower head (not shown) is connected to the shower elbow 20 via a flexible shower hose.

A temperature adjustment handle (temperature adjustment handle) 22 is provided on one end side (left end side in the figure) of the faucet body 12 in the longitudinal direction, and a water discharge pipe 16 is provided on the other end side (right end side in the figure). A switching handle 24 is provided for switching the flow path between the shower side and the shower side and adjusting the flow rate of the discharged water.
Here, the switching handle 24 also performs switching from water discharge to water stoppage or vice versa.

From the faucet body 12, a water-side crank leg 26 also serving as a water supply pipe and a hot water-side crank leg 28 also serving as a hot water supply pipe respectively extend rearward.
The mixed water 10 of the present embodiment is attached to the rear wall by the pair of crank legs 26 and 28.

As shown in FIG. 2, the faucet body 12 has a substantially cylindrical metal outer housing 30 having a circular inner cross-sectional shape as a main body, and on the inner side, the cross-section is also the same. The inner housing 32 is made of resin and has a substantially cylindrical shape.
That is, in the faucet 10 of this embodiment, the faucet body 12 has a double housing structure.
Here, the inner surface of the outer housing 30 is basically a smooth surface having no irregularities as shown in FIG. 15A, and there are flow path walls for partitioning a plurality of flow paths. No protrusion is formed.

In this embodiment, the space between the outer housing 30 and the inner housing 32 is sealed with an annular seal member 34 having elasticity at both ends in the axial direction. Sealing is not performed, and the space formed between the outer housing 30 and the inner housing 32 basically forms a single space from one end to the other end in the axial direction.
In this embodiment, the entire space formed between the outer housing 30 and the inner housing 32 forms a single flow path, here, a primary water-side flow path 36.

The outer housing 30 is provided with an axial positioning convex portion 250, and the inner housing 32 is provided with a corresponding axial positioning convex portion 252, and the inner housing 32 is brought into contact with those axial contacts. The insertion amount in the axial direction (left direction in the figure) with respect to the outer housing 30 is defined.
Further, a seal holding portion 254 that protrudes annularly radially outward is provided on the right end side of the inner housing 32 in the drawing, and the seal holding portion 254 is provided on the right end of the outer housing 30 in the drawing via the seal member 34. It is watertightly fitted to the inner surface of the cylinder.
Further, an annular seal holding portion 256 projecting radially outward is also provided on the left end side of the inner housing 32 in the drawing, and the seal member 34 is held therein, and this seal holding portion 256 holds the seal member 34. Accordingly, the outer housing 30 is water-tightly fitted to a radially inward annular inner flange portion 258 on the left end side in the drawing.

  On the back surface (upper surface in FIG. 2) of the outer housing 30 and on the right end side in the drawing, water is introduced into the outer housing 30, that is, to the water-side flow path 36 between the outer housing 30 and the inner housing 32. An opening (outer housing side opening) 38 is provided, and a cylindrical (cylindrical) water inlet 40 formed integrally with the outer housing 30 is rearward (upward in the drawing) from the water inflow opening 38. A water-side crank leg 26 that also serves as a water supply pipe is screwed to the water inlet 40 by a fastening nut 46.

The water supplied through the crank leg 26 flows into the water-side channel 36 through the water inlet 40 and the water inflow opening 38.
A valve body that allows only a flow of water from the crank leg 26 toward the water inflow opening 38 and prevents a reverse flow inside the connecting portion between the crank leg 26 and the water inlet portion 40. A one-way check valve 44 with 42 is provided.

On the other hand, on the front surface (lower surface in the figure) of the inner housing 32 on the left end side in the figure, the water inflow opening on the inner housing 32 side (inner housing side) through which water that has flowed into the water side flow path 36 flows into the inner housing 32. An opening) 48 is provided through the cylindrical wall.
The water supplied through the crank leg 26 flows into the water-side flow path 36 inside the outer housing 30 and then flows into the inner housing 32 through the water inflow opening 48 on the inner housing 32 side.

On the left end side in the figure, the inner housing 32 is provided with a hot water inflow opening (inner housing side opening) 50 penetrating the cylindrical wall on the back side (upper side in the figure).
On the other hand, at a position opposite to the radial direction, the outer housing 30 is provided with a hot water inflow opening (outer housing side opening) 52, which is watertightly connected by a connecting member 54 described in detail later. .

From the hot water inflow opening 52 on the outer housing 30 side, a cylindrical hot water inlet portion 55 projects integrally from the outer housing 30, and with respect to the hot water inlet portion 55, the hot water side crank leg 28. Are screwed together by a fastening nut 46.
A check valve 44 having a valve body 42 is also provided on the side of the hot water inlet 55 inside the connecting portion between the hot water inlet 55 and the crank leg 28.
The hot water-side check valve 44 allows only the flow of hot water from the crank leg 28 toward the hot water inflow opening 52 and blocks the flow in the reverse direction.

  Thus, the hot water that has flowed into the hot water inflow opening 52 of the outer housing 30 from the crank leg 28 crosses the water-side flow path 36 between the outer housing 30 and the inner housing 32 as it is due to communication by the connecting member 54. It reaches the hot water inflow opening 50 on the inner housing 32 side, and further passes through this to flow into the inner housing 32.

  Then, the water and hot water flowing into the inner housing 32 are operated by operating the temperature control handle 22 by the mixing valve unit 56 inserted and assembled in the inner direction of the inner housing 32 as shown in FIG. The water discharge pipe shown in FIG. 1 is obtained by switching the flow path by the switching valve unit 58 which is mixed in the ratio set by the above and made into the mixed water of the set temperature and then inserted into the inner housing 32 in the axial direction and assembled. It is guided to the 16th side or the shower side and flows out from there.

  Specifically, as shown in FIGS. 3 and 13, on the lower surface of the intermediate portion in the axial direction of the inner housing 32, there is an outflow opening (inner housing side opening) 60 for allowing the mixed water in the inner housing 32 to flow out. As shown in FIG. 14, a connection port portion 62 is provided that is formed from an annular wall that protrudes from the outer surface of the cylindrical wall and surrounds the outflow opening 60.

  On the other hand, on the outer housing 30 side, an outflow opening (outer housing side opening) 64 through which the mixed water flows out to the outside is provided at a position facing the outflow opening 60 and the connecting port portion 62 in the radial direction. The outflow opening 60 on the housing 32 side is connected to the outflow opening 64 on the outer housing 30 side in a watertight manner at the connecting port portion 62 through a cylindrical outflow port portion 66.

Here, the outflow port 66 also serves as a connecting member that connects the outflow openings 60 and 64, and is attached to the outer housing 30 by being inserted into the outflow opening 64 of the outer housing 30.
The outflow portion 66 protrudes downward from the outer housing 30, and the water discharge pipe 16 shown in FIG. 1 is screwed to the protruding portion by a fastening nut 68 so as to be rotatable.

  The inner housing 32 is also provided with a shower side mixed water outflow opening (inner housing side opening) 70 penetrating the cylindrical wall at substantially the same position in the axial direction as shown in FIG. Further, as shown in FIGS. 2 and 13, the inner housing 32 is provided with a connection port portion 72 formed of an annular wall that protrudes annularly from the outer surface of the cylindrical wall and surrounds the outflow opening 70.

Further, the outer housing 30 is provided with a corresponding outflow opening (outer housing side opening) 74 at a position opposed to the outflow opening 70 and the connecting port portion 72 in the radial direction, and the inner housing 32 side is provided. The outflow opening 70 and the outflow opening 74 on the outer housing 30 side are water-tightly connected to each other at the outflow port portion 76 that is formed separately from the outer housing 30 and has a cylindrical shape.
In addition, the outflow port portion 76 is fitted into the outflow opening 74 in a watertight manner through a seal member over the entire periphery, and the tip portion extends over the entire periphery with respect to the connection port portion 72. It is fitted in a watertight and internally fitted state via a seal member.

The shower side outlet 76 also serves as a connection member for watertightly connecting the outflow openings 70 and 74, and is inserted into the outflow opening 74 on the outer housing 30 side. It is attached to the outer housing 30 so as to protrude from the outer housing 30.
The shower elbow 20 is watertightly screwed and connected to the portion of the outlet port 76 protruding from the outer housing 30 so that the fitting portion 80 is fitted through the seal member.

  The mixed water from the mixing valve unit 56 in FIGS. 3 and 4 to the switching valve unit 58 in FIG. 13 is discharged from the outlet 60 on the inner housing 32 side by the flow path switching action of the switching valve unit 58. 66 flows out into the flow passage 66 and flows through the internal flow path of the outlet portion 66, and then flows out from the water outlet 16, or reaches the outlet portion 76 from the outlet opening 70 on the inner housing 32 side. Then, after passing through the internal flow path, it is sent to the shower head through the shower elbow 20, and flows out (discharges water) from there to the outside.

  As shown in FIGS. 14 and 16, the hot water inflow opening 50 provided in the inner housing 32 has a rectangular shape in which the flat developed shape is long in the circumferential direction. That is, a large opening is formed in the circumferential direction as a whole, and the circumferential length is larger than the inner diameter of a cylindrical connecting member 54 described later.

However, if the front end of the connection member 54 is directly applied to the outer surface of the cylindrical wall of the inner housing 32 at the position of the hot water inflow opening 50, the effective flow area of the hot water inflow opening 50 is reduced at the front end of the connection member 54. It becomes only the area of the inner part enclosed, and the effective area of the hot water inflow opening 50 is inevitably small, and it is difficult to ensure a sufficient flow rate.
Therefore, in this embodiment, the hot water inflow opening 50 is made a large opening, and the connecting member 54 is connected to the hot water inflow opening 50 as follows.

  That is, in this embodiment, an annular wall projecting from the outer surface of the cylindrical wall of the inner housing 32 (rectangular shape in plan view) and surrounding the hot water inflow opening 50 is provided, and this is formed as a connecting port portion 82, and An end of the connection member 54 on the inner housing 32 side is fitted into the connection port portion 82 via a ring-shaped spacer member 84. By doing so, a space is formed between the end of the connection member 54 on the inner housing 32 side and the spacer member 84 and the outer surface of the cylindrical wall of the inner housing 32.

Specifically, as shown in FIG. 17, the connecting port portion 82 is provided with stepped portions 86 at the root positions at both ends in the circumferential direction, and the spacer member 84 is brought into contact with the ring-shaped spacer member 84. Are fitted into the coupling port portion 82 in an internally fitted state, and the connecting member 54 is fitted into the spacer member 84 in the same fitted state at the tip end portion of the cylindrical connecting member 54. And the connecting member 54 is assembled in a state where a space is formed between the spacer member 84 and the outer surface of the cylindrical wall of the inner housing 32, so that the hot water inflow opening 50 as the inner housing side opening and the hot water inflow as the outer housing side opening The opening 52 is connected to the connection member 54 through the spacer member 84 and the connection port 82 in a watertight manner.
The hot water inflow opening 50 having a long circumferential length extends in the circumferential direction until reaching the connection port portion 82 as shown in FIG.

As shown in FIG. 18 (A), the ring-shaped spacer member 84 has a quadrangular shape in plan view and has a circular fitting hole 99, and the side surface of FIG. 18 (B). The bottom surface shape in view is a curved shape that is concave upward in the figure.
Further, an annular groove 88 is provided on the outer peripheral surface, and a seal member 90 made of an elastic O-ring is held therein.
The spacer member 84 has its outer surface (outer peripheral surface) fitted in a watertight manner to the inner surface (inner peripheral surface) of the connection port portion 82 via the seal member 90.

  On the other hand, as shown in FIG. 19, the connecting member 54 having a cylindrical shape has annular grooves 92 and 94 on the outer surface (outer peripheral surface) of each end portion in the axial direction. Seal members 96 and 98 made of rings are held.

  The connecting member 54 is water-tightly coupled to the inner surface of the spacer member 84 in the axial direction (the lower end in FIG. 17) via the seal member 96, and the outer surface is connected to the outer surface via the seal member 98. The inner wall of the hot water inflow opening 52 which is the housing 30 side opening is watertightly coupled in a fitted state, so that the hot water inflow opening 52 on the outer housing 30 side and the hot water inflow opening 50 on the inner housing 32 side are connected to the spacer member. 84, watertight connection is made through the connecting port 82.

  That is, the hot water inflow openings 52 and 50 are communicated with each other and sent from the crank leg 28 to cross the water side flow path 36 formed between the outer housing 30 and the inner housing 32. A hot water side channel as an independent primary side channel for allowing hot water to flow into the inner housing 32 is formed.

In FIG. 17, reference numeral 100 denotes a fixing clip (fixing member) for fixing the connecting member 54 in a retaining state. As shown in FIG. 20, the C clip is formed as a whole and has an elastic deformability in the radial direction. ing.
As shown in FIG. 17, in this embodiment, a cylindrical hot water inlet portion 55 through which hot water from the crank leg 28 flows is formed integrally with the outer housing 30, and the connecting member 54 is formed of this The hot water inflow opening 50 on the inner housing 32 side, specifically, the connecting port portion 82 and the hot water inflow opening 52 on the outer housing 30 side, are inserted into the hot water inlet 55 from the opening thereof, and are watertightly connected. ing.

  Thus, an annular fitting recess 102 is provided on the inner surface of the hot water inlet 55, and after inserting the fixing clip 100 in a reduced diameter state, the diameter is expanded and fitted into the fitting recess 102. As a result, the connecting member 54 is prevented from coming out upward in the figure by the contact action of the fixing clip 100 against the connecting member 54.

As shown in FIG. 20, the fixing clip 100 has both ends in the circumferential direction as radially inward protruding portions, and a recess 106 is provided there.
The concave portion 106 is a portion for engaging a jig, and the fixing clip 100 can be taken out from the hot water inlet portion 55 by engaging the concave portion 106 with the jig and reducing the diameter.
When the connecting member 54 is pushed downward in FIG. 17, the tip abuts against the outer surface of the cylindrical wall of the inner housing 32, and the pushing amount is defined there.

21 and 16 show a procedure for assembling the spacer member 84, the connecting member 54, the fixing clip 100, etc. in FIG.
As shown in the figure, here, before the inner housing 32 is inserted into the outer housing 30, the spacer member 84 is fitted into the connecting port portion 82 and held therein.
In this state, the inner housing 32 is inserted into the outer housing 30 in the axial direction as shown in FIG. FIG. 21 (III) shows the state at this time.

Thereafter, as shown in FIG. 16 (A), the connecting member 54 is first inserted into the hot water inlet portion 55 of the outer housing 30, and thereafter the hot water inlet is also used in a state where the fixing clip 100 is deformed in a reduced diameter. It is pushed into the portion 55 and fitted into the fitting recess 102 inside the hot water inlet portion 55.
At this time, the fixing clip 100 is expanded in diameter by the stored elastic force and fitted into the fitting recess 102, thereby preventing the connecting member 54 from coming out upward in the drawing.
That is, the connecting member 54 is fixed in the axial direction.

  In this embodiment, the connection member 54 in FIGS. 2 and 17 connects the hot water inflow opening 52 of the outer housing 30 and the connecting port portion 82, that is, the hot water inflow opening 50 of the inner housing 32, The mixed water outflow opening 60 on the inner housing 32 side shown in FIG. 13 and the outflow opening 64 on the outer housing 30 side are connected by an outflow port 66 that also serves as a connection member, and FIG. As shown in FIG. 5, the outflow opening 70 on the inner housing 32 side through which the mixed water flows out and the outflow opening 74 of the outer housing 30 are connected by an outflow port 76 that also serves as a connecting member, so that the outer housing 30 And the inner housing 32 are fixed.

The above-described mixing valve unit 56 in FIG. 3 is shown enlarged in FIG. 4 together with the peripheral part, and the switching valve unit 58 is shown in enlarged detail in FIG. 13 together with the peripheral part.
The mixing valve unit 56 of this embodiment is of a thermostat type (with an automatic temperature control function), and has a valve case 112. The valve case 112 is inserted into the inner housing 32 in the axial direction together with the valve case 112. Are assembled.

  In FIG. 4, reference numeral 110 denotes a fixed nut having a stepped cylindrical shape, and the mixing valve unit 56 inserted into the inner housing 32 is connected to the end of the inner housing 32 by screwing. It is secured from the housing 32 and fixed inside the inner housing 32.

A water inlet 116 and a hot water inlet 118 are formed in the valve case 112 at positions separated from each other in the axial direction, and water and hot water flow into the valve case 112 through the water inlet 116 and the hot water inlet 118.
The inflowing water and hot water are mixed in the mixing chamber 120, and then the mixed water flows out from the outlet 122 to the right in the figure.

  Reference numerals 124 and 126 denote water flowing in from the water inlet 116 and the hot water inlet 118, a water side valve portion for adjusting the amount of hot water flow, and a hot water side valve portion, respectively. The amount of inflow changes depending on the valve opening degree of the water side valve portion 124 and the hot water side valve portion 126, respectively. That is, the mixing ratio of water and hot water in the mixing chamber 120 changes, and the temperature of the mixed water changes.

A valve body unit 128 is provided inside the valve case 112 so as to be movable in the left-right direction (axial direction) in the figure.
The valve body unit 128 includes a water side valve body 130 and a hot water side valve body 132 which are provided separately in the axial direction, and a connecting portion 134 which connects them in the axial direction.

  Here, each of the water side valve body 130 and the hot water side valve body 132 has a cylindrical shape (annular shape), and seal members 136 and 138 having a U-shaped cross section are held at axially intermediate positions of the respective outer peripheral surfaces. The seal members 136 and 138 seal the water side valve body 130 and the hot water side valve body 132 and the valve case 112 in a watertight manner.

The connecting portion 134 is configured integrally with the hot water side valve body 132.
As shown in FIG. 5, the connecting portion 134 includes a plurality (four in this case) of reinforcing plates 140 that extend radially from the central portion so as to form a cross at the inner position of the hot water valve body 132. It integrally has a cylindrical portion 142 protruding from the reinforcing plate 140 in the axial direction and rightward in the drawing.
Here, the reinforcing plate 140 serves to reinforce the hot water side valve body 132 from the inside, the plate surface extends in the axial direction, and the outer peripheral end is integrated with the hot water side valve body 132.
In this embodiment, water and hot water flowing in from the water inlet 116 and the hot water inlet 118 flow to the right in the figure and reach the mixing chamber 120 where the water and hot water are mixed.

The mixing chamber 120 accommodates a coil-shaped temperature-sensitive spring (biasing member) 144 made of a shape memory alloy, and the biasing force is used as a pressing force in the axial direction toward the left in the figure with respect to the valve body unit 128. That is, the hot water side valve body 132 is closed and the water side valve body 130 is opened.
The temperature sensitive spring 144 made of this shape memory alloy expands and contracts according to the mixed water temperature inside the mixing chamber 120, and changes the urging force in the left direction in the figure so that the mixed water temperature becomes the set temperature, so that the valve body unit 128 is changed. Automatically fine-tunes the position of.

  Reference numeral 146 denotes a spring receiver that forms the mixing chamber 120 and contacts one end of the temperature-sensitive spring 144, and has an outward engaging claw 148 at the left end in the figure, and the engaging claw 148 is engaged with the valve case 112. The valve case 112 is assembled by engaging with the hole 150.

The water side valve body 130 is configured separately from the hot water side valve body 132 and the connecting portion 134.
As clearly shown in FIG. 5, the water-side valve body 130 is formed with a cylindrical fitting portion 152 having a stepped shape on the inner side, and the fitting portion 152 is a stepped portion. The cylindrical portion 142 is fitted and assembled to the cylindrical portion 142 in a state where 154 is brought into contact with the tip end surface of the cylindrical portion 142.
Specifically, an internal thread portion 156 is formed inside the cylindrical portion 142, and an external thread portion 158 formed at a distal end portion of a valve shaft 206 described later is screwed therein.

A retaining ring 160 as a pressing member is attached to the valve shaft 206, and the male threaded portion 158 of the valve shaft 206 is screwed into the female threaded portion 156 inside the cylindrical portion 142, so that the water-side valve body 130 is retained by the retaining ring. At 160, it is pressed rightward in the figure against the cylindrical portion 142 via the spring 162, and is assembled and fixed to the connecting portion 134.
Here, the spring 162 is made of a normal metal and has a coil shape.

As shown in FIG. 4, the valve case 112 has a water side valve seat 164 and a hot water side valve in the water side valve portion 124 at the inner positions of the water side valve body 130 and the hot water side valve body 132 in the axial direction. The hot water side valve seat 166 in the part 126 is provided, and the water side valve body 130 and the hot water side valve body 132 abut against them in the axial direction.
Specifically, the water side valve body 130 and the hot water side valve body 132 are brought into contact with the valve seat surfaces 168 and 170 of the water side valve seat 164 and the hot water side valve seat 166, respectively.

In this embodiment, the valve body unit 128 is directed rightward in the figure by a bias spring (biasing member) 172 made of a normal metal coil spring, that is, the hot water valve body 132 is opened, and the water side valve body 130 is opened. The valve is urged (pressed) in the direction to close the valve, and the temperature-sensitive spring 144 provided in the mixing chamber 120 is closed in the opposite direction to the left in the drawing, that is, the hot water side valve body 132 is closed. The water side valve body 130 is urged in the direction to open the valve.
The valve body unit 128 is held at a position where the leftward biasing force in the figure by the temperature-sensitive spring 144 and the rightward biasing force in the figure by the bias spring 172 balance.

As shown in FIG. 4, a rotation operation shaft 174 is assembled to the valve case 112.
The rotary operation shaft 174 is used to set the mixed water temperature by moving the valve body unit 128 in the valve case 112 in the axial direction, that is, in the horizontal direction in the figure. The fitting shaft 176 is rotatably fitted in the fitting hole 180 of the valve case 112.
Here, a space between the fitting shaft portion 176 and the fitting hole 180 of the valve case 112 is water-tightly sealed with an O-ring 182.
In addition, the temperature adjusting handle 22 is connected to the handle connecting portion 178 protruding leftward in the axial direction from the valve case 112 in the serration portion 184 in an integrally rotated state.

The rotary operation shaft 174 has a large-diameter cylindrical portion 185 inside the valve case 112, and is elastic in the radial direction attached to the leftmost shoulder portion of the cylindrical portion 185 in the drawing and the rotary operation shaft 174. A retaining ring 186 is fixed to the valve case 112 in the axial direction.
A female screw portion 188 is formed on the inner peripheral surface of the cylindrical portion 185, and a cylindrical driving member 190 is screwed to the male screw portion 192 on the outer peripheral surface.
The drive member 190 is moved forward and backward in the axial direction, that is, the left-right direction in the figure by screw feed by the rotation operation of the rotation operation shaft 174.

Between the drive member 190 and the valve body unit 128, the above-described bias spring 172 made of a normal metal coil spring is interposed via a stopper ring 194 and a spring receiver 196. A rightward biasing force in the drawing is exerted to the valve body unit 128 in the rightward direction in the drawing.
The spring receiver 196 is provided with inward flange portions 198 and 200 at the right end and the left end in the drawing.

On the other hand, an outward flange portion 202 is provided at the right end of the drive member 190 in the drawing, and the outward flange portion 202 is arranged between the pair of flange portions 198 and 200 in the left-right direction in the drawing. Relative movement is possible.
Further, the drive member 190 is provided with a stepped portion 204 that protrudes inward at the left end in the figure, and a stopper ring 194 is brought into contact with the right side in the figure.

As described above, the valve shaft 206 extends leftward from the valve body unit 128 in the drawing.
The left end side of the valve shaft 206 passes through the stopper ring 194 and protrudes leftward in the figure, and a head 208 having a diameter larger than the inner diameter of the stopper ring 194 is provided at the protruding end.
The head 208 is formed with an engaging groove that becomes a tool hook when the male threaded portion 158 of the valve shaft 206 is screwed into the female threaded portion 156 of the connecting portion 134.

In this embodiment, when the rotary operation shaft 174 is rotated in the forward direction, the drive member 190 is advanced to the right in the drawing by a screw feed action, and thereby the bias spring 172 is compressed via the stopper ring 194, and the valve The rightward biasing force in the figure against the body unit 128 is increased.
Further, when the rotation operation shaft 174 is rotated in the reverse direction, the drive member 190 is moved backward in the left direction in the figure, and the bias spring 172 is displaced in the extending direction, thereby weakening the rightward biasing force on the valve body unit 28 in the figure. To do.

  In the mixing valve unit 56 of this example, by rotating the rotation operation shaft 174 in the forward direction or the reverse direction in this manner, the biasing force of the bias spring 172 in the right direction in FIG. The balance position with the leftward biasing force 144 in the drawing changes in the horizontal direction in the drawing, and the valve body unit 128 is shifted in the horizontal direction in the drawing accordingly. That is, the temperature of the mixed water in the mixing valve unit 56 is set or changed.

In the mixing valve unit 56, the valve body unit 128 moves to the right in the drawing to the full position and the water side valve body 130 comes into contact with the valve seat surface 168 of the water side valve seat 164, so that the water inlet 116 is fully closed. The inflow port 118 is fully opened, the valve body unit 128 is moved in the reverse direction to the full position, and the hot water side valve body 132 comes into contact with the valve seat surface 170 of the hot water side valve seat 166, so that the hot water inflow port 118 is fully closed. The inlet 116 is fully opened.
Further, the water inlet 116 and the hot water inlet 118 are opened at an intermediate position between them, and the opening degree thereof is automatically changed based on the temperature sensing of the temperature sensing spring 144 to change the inflow amount of water and hot water. The temperature is automatically adjusted to the set temperature.

  As shown in FIG. 13, in this embodiment, the switching valve unit 58 is a cylinder-type valve body unit, and the rotation operation shaft 228 that rotates integrally with the switching handle 24 and the rotation operation shaft 228 are also in an integrally rotated state. The cylinder valve body 230 and the valve case 232 are connected to each other.

  The valve case 232 includes an inner case 234 that directly fits and holds the cylinder valve body 230, and an outer case 236 outside the inner case 234, and the outer case 236 is formed on the inner housing 32. It is inserted and assembled in the axial direction inside.

The valve case 232 further includes a rotation stop member 238 that prevents the outer case 236 from rotating. The rotation stop member 238 is fixed to the end of the inner housing 32 by a fixing nut 240. ing.
The cylinder valve body 230 is provided with an opening 242 for flowing the supplied mixed water to the discharge pipe 16 side and an opening 244 for flowing it to the shower side.

On the other hand, the valve case 232 includes an opening 246 corresponding to the opening 242 and an opening (not shown) corresponding to the opening 244, and the cylinder valve body 230 is rotated by the switching handle 24, so that the opening 242 becomes the valve case 232. Under the condition of matching with the opening 246, the mixed water flows out from the openings 242 and 246 and flows into the outflow opening 60 of the inner housing 32.
The mixed water reaching the outflow opening 60 flows into the water discharge pipe 16 as described above, and flows out (discharges water) from the water discharge port 14 at the tip.

  On the other hand, when the opening 244 of the cylinder valve body 230 is matched with another opening of the valve case 232 (not shown) (the opening 242 is in a state of mismatch with the opening 246, the opening 242 is closed). The mixed water flowing out from the opening 244 flows into the outlet 76 on the shower side, is sent to the shower head, and is discharged from there.

FIG. 6 shows an assembly structure of the mixing valve unit 56 and the temperature control handle 22 described above.
As shown in the figure, a serration member 212 having a female serration portion on the inner peripheral surface is attached to the temperature control handle 22 in an integrally rotating state, and the serration member 212 is connected to the serration portion 184 in the mixing valve unit 56, Specifically, the temperature control handle 22 is connected to the rotary operation shaft 174 in the mixing valve unit 56 in an integrally rotated state by being serrated to the male serration portion.

A safety button 214 is provided on the temperature control handle 22 and is urged by a spring 216 to protrude upward in the figure.
The safety button 214 is provided with an abutting portion 218 that abuts against stopper portions 224, 226, and 260 in a stopper member 220 described later.
Reference numeral 220 denotes a stopper member that restricts the rotation of the temperature control handle 22 by abutting the abutting portion 218, and 222 is a stopper attachment member for attaching the stopper member 220 to the inner housing 32.

  In this embodiment, when the temperature control handle 22 is rotated to the high temperature side, the contact portion 218 of the safety button 214 comes into contact with the first stopper portion 224 of the stopper member 220 at a certain point. Here, the temperature control handle 22 is restricted from being rotated to a higher temperature side.

At this stage, when the user wants to further change the temperature of the mixed water to the high temperature side, when the safety button 214 is pushed downward (inward) in the figure against the urging force of the spring 216, the contact portion 218 and The contact with the first stopper portion 224 is released, and the temperature control handle 22 can be rotated further to the higher temperature side.
In this state, when the temperature adjustment handle 22 is rotated to the high temperature side to the full, the contact portion 218 finally comes into contact with the second stopper portion 226, and further rotation operation is prohibited.
On the other hand, when the temperature adjustment handle 22 is fully rotated to the low temperature side, the contact portion 218 comes into contact with the third stopper portion 260, and further rotation of the temperature adjustment handle 22 to the low temperature side is restricted.

In FIG. 6, reference numeral 262 denotes an end portion of the inner housing 32 projecting from the outer housing 30 in the axial direction, and a male screw 264 is provided on the outer surface, and the fixing nut 110 is screwed into the mixing valve unit 56. Is fixed inside the inner housing 32.
Here, as shown in FIGS. 4 and 7, the fixing nut 110 has a slightly larger diameter than the outer surface of the protruding end 262 in the inner housing 32.
The fixing nut 110 also has a larger diameter than the inner diameter of the inner flange portion 258, which is the smallest diameter portion of the inner surface of the outer housing 30 in FIG.

  As shown in FIGS. 6 and 7, the end 262 of the inner housing 32 protruding in the axial direction from the outer housing 30 is provided with a substantially semi-annular groove 266 on the outer surface along the circumferential direction. A stopper mounting member 222 having a width substantially equal to that of the groove 266 (slightly smaller dimension) is fitted into the groove 266.

  The stopper attaching member 222 is a member for attaching the stopper member 220 to the end 262 of the inner housing 32, and as shown in FIGS. 7 and 9, the stopper attaching member 222 has a substantially U-shaped partial annular shape as a whole. A part of the direction is an opening 268.

The stopper mounting member 222 has a pair of leg portions 270 that are straight and extend in parallel to each other on both ends in the circumferential direction, and is substantially semicircular or fitted into the stopper member 220 at a portion other than the leg portions 270. An arc-shaped inner fitting portion 272 is provided.
Further, on the outer peripheral surface, positioning convex portions (second positioning convex portions) 274-1, 274-2, 274-3, 274-4, 274 for positioning in the rotational direction with the stopper member 220 are provided. -5.
Further, a rotational positioning recess (fourth positioning recess) 276 is provided at the circumferential center of the inner peripheral surface.

On the other hand, the groove 266 provided in the end portion 262 has a groove shape corresponding to the substantially U-shaped stopper mounting member 222, and the positioning of the stopper mounting member 222 is included in the groove 266. Corresponding to the concave portion 276, a positioning convex portion (third positioning convex portion) 278 in the rotational direction that fits into the positioning concave portion 276 is provided.
Further, a portion of the stopper mounting member 222 that fits with the pair of leg portions 270 is the same shape as the leg portion 270 in a plan view, and the groove bottom surface is a straight surface corresponding to the leg portion 270.

In this embodiment, when the stopper mounting member 222 having a substantially U shape is fitted in the groove 266 provided in the end portion 262 of the inner housing 32 in the direction perpendicular to the axis, the stopper mounting member 222 is It is fixed to the portion 262 while being positioned in the rotational direction and also in the axial direction.
At this time, the stopper mounting member 222 protrudes radially outward from the outer surface of the end portion 262 and the inner surface of the inner flange portion 258 of the outer housing 30 in FIG.

  When the shape of the stopper mounting member 222 is formed in advance on the end of the inner housing 32 in advance, the inner housing 32 is inserted into the outer housing 30 in the axial direction, and the end 262 is inserted into the outer housing. However, in this embodiment, the stopper mounting member 222 is configured separately from the inner housing 32 and is attached to the end portion 262 later, and thus will be described later. The attachment portion for attaching the stopper member 220 can be easily configured to protrude radially outward from the outer surface of the end portion 262.

The stopper member 220 is pushed in the axial direction as shown in FIG. 7 (II) under the state where the stopper mounting member 222 is mounted on the end 262 as described above. It is attached to the end 262 in a fixed state via. That is, it is fixed in the rotational direction.
Here, the stopper member 220 has a cylindrical shape as a whole as shown in FIG. 8, and the inner diameter thereof is slightly larger than the outer diameter of the fixing nut 110. Therefore, it is possible to fit the stopper mounting member 222 in the axial direction with the fixing nut 110 assembled.

As shown in FIGS. 7, 8, and 10, the stopper member 220 includes a cylindrical peripheral wall portion 280 and a radially inward flange portion 282 provided at one end in the axial direction. Yes.
Positioning recesses (first positioning recesses) 284-1, 284-2, 284-3, and 284 in the rotational direction along the circumferential direction are provided at the end of the peripheral wall portion 280 opposite to the flange portion 282. -4,284-5 are provided.
Here, the positioning concave portions 284-1, 284-2, 284-3, 284-4, and 284-5 are the positioning convex portions (second positioning convex portions) 274-1 of the stopper mounting member 222, respectively. , 274-2, 274-3, 274-4, and 274-5, and in a corresponding shape.

In this embodiment, the positioning recesses 284-1 to 284-5 in the stopper member 220 are aligned with the positioning projections 274-1 to 274-5 in the stopper mounting member 222 in the rotational direction. When the stopper member 220 is pushed in the axial direction in FIG. 7 (II), the positioning concave portions 284-1 to 284-5 of the stopper member 220 are positioned to the positioning convex portions 274-1 to 274-5 of the stopper mounting member 222. And the inner fitting portion 272 of the stopper mounting member 222 is fitted into the stopper member 220.
Here, the stopper member 220 is mounted in a fixed state in the rotational direction with respect to the end portion 262 of the inner housing 32 in a state where the stopper member 220 is positioned in the rotational direction with respect to the stopper mounting member 222.

As shown in the modification of FIG. 12, the stopper mounting member 222 is provided with a protruding claw 286, while the stopper member 220 is provided with a tongue piece 288, and a retaining hole 290 is provided there. The stopper member 220 assembled to the stopper mounting member 222 may be prevented from being detached in the axial direction by engaging the claw 286 with the retaining hole 290.
In this case, the stopper member 220 is separated from the stopper mounting member 222 in the axial direction, and the temperature control handle 22 is rubbed when the temperature control handle 22 is rotated. It is desirable to prevent.

FIG. 11 shows the contact surfaces of the second positioning protrusions 274-1 to 274-5 on the stopper mounting member 222 and the contact surfaces of the first positioning recesses 284-1 to 284-5 on the stopper member 220. The positional relationship is shown.
Here, the contact surface A− of the stopper mounting member 222 is obtained even when the temperature control handle 22, that is, the stopper member 220 rotates in either the high temperature side or the low temperature side (any direction of P ₁ or P _{2 in} FIG. 11). 1 and A-2, the contact surface B of the stopper member 220 comes into contact with the contact surface A-1 on the side facing away from the circumferential end of the stopper mounting member 222, and the end in the circumferential direction is directed. Positioning convex portions 274-1 to 274-5 on the stopper mounting member 222 and positions on the stopper member 220 so that the contact surface B on the stopper member 220 side does not contact the contact surface A-2 on the near side. The dimensions and shapes of the decision recesses 284-1 to 284-5 are determined in advance.

  In this way, when the stopper member 220 rotates integrally with the temperature adjustment handle 22 and a force is applied from the stopper member 220 to the stopper mounting member 222, this is applied to the stopper mounting member 222 with respect to the inner housing 32. A force is applied to the end portion 262 of the opening 268 from the side of the opening 268 in a direction perpendicular to the axis, and a force in a direction to pull the stopper mounting member 222 away from the end 262 in the direction perpendicular to the axis. Since it does not work, there is an advantage that it is possible to reliably prevent the stopper mounting member 222 from being detached from the end portion 262 in the direction perpendicular to the axis by the action of the rotational force from the stopper member 220.

  In the present embodiment as described above, the stopper mounting member 222 is separated from the inner housing 32 and is fitted into the groove 266 of the end 262 protruding from the outer housing 30 of the inner housing 32 and attached thereto. Therefore, by providing a stopper mounting portion directly at the end of the inner housing 32, the problem of restricting the design freedom of the inner housing 32 and the outer housing 30 is solved, and they are designed in an arbitrary shape. It becomes possible to do.

  In the present embodiment, the stopper mounting member 222 is attached to the end portion 262 of the inner housing 32 by retrofitting, so that the stopper mounting member 222 and the stopper member 220 can be configured to have a large diameter, and the stopper strength can be increased. Can be made with high strength.

  Further, since the stopper mounting member 222 is provided with the inner fitting portion 272 for the stopper member 220, it is possible to effectively prevent the stopper mounting member 222 from being detached from the protruding end portion 262 of the inner housing 32 and the stopper member 220.

Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, in the present invention, the first positioning concave portion can be a positioning convex portion, and the second positioning concave portion can be a positioning convex portion.
Furthermore, the third positioning convex portion can be a positioning concave portion, and the fourth positioning concave portion can be a positioning convex portion.
The above embodiment is an example in which the present invention is applied to a stopper mechanism for a temperature control handle. However, the present invention may be applied to other types of handles as a stopper mechanism for a switching handle or in other forms of mixing faucets. The present invention can be applied in various forms without departing from the spirit of the invention, such as being applicable as a stopper mechanism.

DESCRIPTION OF SYMBOLS 10 Mixing faucet 30 Outer housing 32 Inner housing 110 Fixing nut 218 Contact part 220 Stopper member 222 Stopper mounting member 224,226,260 Stopper part 262 End part 266 Groove 272 Internal fitting part 274-1, 274-2, 274- 3,274-4,274-5 Positioning convex part (second positioning convex part)
276 Positioning recess (fourth positioning recess)
278 Positioning convex portion (third positioning convex portion)
284-1, 284-2, 284-2, 284-4, 284-5 Positioning recess (first positioning recess)
286 nail 290 retaining hole

Claims (5)

A stopper member is attached to the end of the cylindrical inner housing that is inserted in the axial direction inside the cylindrical outer housing and protrudes in the axial direction from the outer housing, and the handle abuts against the stopper portion of the stopper member. A handle stopper mechanism in a mixing faucet having a structure for restricting the rotation of the handle,
Providing a groove along the circumferential direction on the outer surface of the protruding end of the inner housing;
Stopper mounting having a second positioning protrusion or recess that fits in the axial direction with the first positioning recess or protrusion for positioning in the rotation direction provided in the stopper member. A member is fitted in the groove in a direction perpendicular to the axis, fixed to the end of the inner housing in the rotational direction and the axial direction, and mounted in a state of projecting radially outward from the outer surface of the end,
The stopper member is fitted in the axial direction in a fixed state in the rotational direction with respect to the stopper mounting member, and is attached to the protruding end of the inner housing ,
The groove is provided with a third positioning protrusion or recess for positioning the stopper mounting member in the rotational direction with respect to the protruding end of the inner housing, and a fourth corresponding to the stopper mounting member. Positioning stoppers or projections are provided, and the stopper mounting member is formed on the inner housing by the concave-convex engagement between the third positioning projections or depressions and the fourth positioning recess or projections. Fixed in the direction of rotation with respect to the end,
A stopper mechanism for a handle, wherein the stopper mounting member includes an inner fitting portion with respect to the stopper member . In claim 1, the end portion of the inner housing, the components that are accommodated in the interior of the inner housing in the fixed mode to the internal, the end portion outer diameter equal to or more fixing nut is screw-coupled A stopper mechanism for the handle, characterized in that 3. The handle stopper mechanism according to claim 2 , wherein the stopper member has a cylindrical shape and has an inner diameter larger than that of the fixing nut. In any one of claims 1-3, pawl on one of said stopper mounting member and the stopper member, and the other is provided with a retaining portion which hooked a claw in the axial direction,該掛stopper portion A stopper mechanism for a handle, wherein the stopper member is prevented from being separated from the stopper mounting member in the axial direction by the hook of the claw. In any one of Claims 1-4 , The said stopper attachment member is a member which makes | forms the partial annular shape of a part of circumferential direction,
When the stopper member rotates in either the forward or reverse direction,
Of the contact surface to the first positioning recess or projection of the stopper member in the second positioning projection or recess of the stopper mounting member,
The contact surface on the side facing away from the circumferential end of the stopper mounting member is made to contact the corresponding contact surface of the first positioning recess or projection of the stopper member,
The second positioning convex portion is arranged so that the corresponding contact surface of the first positioning concave portion or convex portion of the stopper member does not hit the contact surface on the side facing the circumferential end. Alternatively, the handle stopper mechanism is characterized in that the size and shape of the concave portion and the corresponding first positioning concave portion or convex portion are determined.

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