JP2012092961A5 - - Google Patents

Description

Single lever mixer tap

  The present invention relates to a single lever mixing faucet having a fixed valve body and a movable valve body that slides on the fixed valve body, and more particularly to a single lever mixing faucet characterized by the form of the fixed valve body.

  Conventionally, as a mixing faucet, a fixed valve body having a water inflow valve hole and a hot water inflow valve hole and a mixed water outflow valve hole, and the water inflow valve hole and / or the hot water inflow valve hole and the outflow valve hole are communicated. A movable valve body that slides on the fixed valve body, and a lever handle that moves the movable valve body, and the lever handle is rotated in the vertical direction (rotating operation in the undulating direction). The valve is opened and closed by adjusting the flow rate of water stop and water discharge, and the hot water inflow valve hole on the left side and the water inflow valve hole on the right side by turning operation in the left and right direction (rotating operation in the direction perpendicular to the undulation direction) A single lever mixing faucet that adjusts the temperature of discharged water by changing the opening degree of the water in a reverse relationship is widely used.

In this single lever mixing faucet, the movable valve body is slid linearly with respect to the fixed valve body to open and close the valve by rotating the lever handle in the vertical direction, and the lever handle is rotated in the horizontal direction. By operation, the movable valve body is rotated and slid with respect to the fixed valve body to change the temperature of water discharge.
For example, Patent Document 1 below discloses a single lever mixing faucet of this type.

FIG. 15 shows the main part of the specific example.
In the figure, reference numeral 200 denotes a faucet body in which a valve cartridge 202 is incorporated.
A cartridge case 204 in the valve cartridge 202 is divided into an upper case main body 204A and a lower bottom cover 204B, which are assembled vertically in the figure.
Inside the cartridge case 204, a fixed valve body 206 and a movable valve body 208 that slides in a watertight manner on the upper surface thereof are provided.
Here, both the fixed valve body 206 and the movable valve body 208 are formed of a disk.

The movable valve body 208 is operatively connected to the lever handle 214 via the drive unit 210 and the lever shaft 212, and the movable valve body 208 slides on the fixed valve body 206 by the operation of the lever handle 214. Yes.
Specifically, when the lever handle 214 is operated in the up-down direction, that is, in the up-and-down direction in FIG. 15, the movable valve body 208 slides linearly in the left-right direction in FIG. , The movable valve body 208 rotates and slides on the fixed valve body 206.

As shown in FIG. 16, the fixed valve body 206 has a water inlet valve hole 216 at the right position relative to the user, a hot water inlet valve hole 218 at the left position, and a mixed water outlet valve hole 220. Each is provided so as to penetrate the fixed valve body 206 in the plate thickness direction.
Here, each of the water inflow valve hole 216, the hot water inflow valve hole 218, and the mixed water outflow valve hole 220 has an opening shape on the front surface side on the movable valve body 208 side and an opening on the back surface side opposite to this. The shape is different from each other.

Specifically, as shown in FIG. 16B, the water inflow valve hole 216 and the hot water inflow valve hole 218 have an opening on the back side on the side where water and hot water enter the inflow valve holes 216 and 218, respectively. 216B and 218B each have a circular shape, and the outlet valve hole 220 similarly has a circular outlet side opening 220B on the back side from which the mixed water exits the outlet valve hole 220.
Here, each of the entrance side openings 216B and 218B and the exit side opening 220B has a circular shape with the same diameter, and is arranged so that each center is located at each vertex of an isosceles triangle (here, an equilateral triangle). .

The inlet openings 216B and 218B in the water inlet valve hole 216 and the hot water inlet valve hole 218 are aligned with the respective inlets 227 of water and hot water in the bottom lid 204B in the cartridge case 204 of FIG. Is provided.
Similarly, the outlet side opening 220B in the outflow valve hole 220 is also provided in the shape and position of the mixed water outlet 228 formed in the bottom cover 204B.

A cylindrical elastic seal ring 222 that seals between the fixed valve body 206 and the bottom cover 204B shown in FIG. 15 in a watertight manner is provided around each of the inlet side openings 216B and 218B and the outlet side opening 220B. A fitting recess 224 to be fitted is formed.
Here, the three fitting recesses 224 each have a circular shape with the same diameter.

  Here, the shape of the back surface of the fixed valve body 206 is such that the center of the outlet side opening 220B in the outlet valve hole 220 in the left-right direction and the inlet side openings 216B and 218B in the water inlet valve hole 216 and the hot water inlet valve hole 218, respectively. It has a left-right symmetric shape with a center line PB connecting the center in the left-right direction (the center in the left-right direction along the rotation direction of the lever handle 214, the same applies hereinafter) as the axis of symmetry.

Here, the center line PB is the center in the horizontal direction of the inlet opening on the surface side of the fixed valve body 206 at the outlet 228 of the bottom cover 204B, and each outlet on the surface side of each inlet 227 for water and hot water. It coincides with the center line connecting the center in the left-right direction between the openings.
Further, the center in the left-right direction between the respective outlet openings on the surface side of the respective inlets 227 for water and hot water is the left-right direction between the respective inlet-side openings on the back surface of the respective inlets 227 for water and hot water. It is also consistent with the center.

  On the other hand, as shown in FIG. 16A, the outlet side opening 216A on the surface side of the water inflow valve hole 216 and the outlet side opening 218A on the surface side of the hot water inflow valve hole 218 each have an arc shape. In addition, the entrance-side opening 220A on the surface side of the outflow valve hole 220 has a substantially semicircular shape at the lower part in the drawing and a shape in which the upper part is wider and fan-shaped.

The fixed valve body 206 also includes the center in the left-right direction of the inlet side opening 220A in the outlet valve hole 220 and the outlet side of each of the water inlet valve hole 216 and the hot water inlet valve hole 218 on the surface side shown in FIG. It has a symmetrical shape with a center line PA connecting the centers in the left-right direction between the openings 216A and 218A as a symmetry axis.
On the other hand, as shown in FIG. 17, the communication opening 226 of the movable valve body 208 has a substantially keyhole shape in which a partial circular portion and a substantially partial rectangular portion are combined.

  In the conventional single lever mixing faucet shown in FIG. 15, the shape of the fixed valve body 206 is symmetrical in the shape of the front side shown in FIG. 16A and the shape of the back side shown in FIG. In addition, the center lines PA and PB, which are the axes of symmetry, have shapes that coincide with each other.

Conventionally, the single lever mixing faucet is installed with the front surface of the faucet body 200 facing the user, that is, facing the user.
Further, the lever handle 214 is set so that the center position thereof is the center position of the front surface of the faucet body 200 within the rotation range in the left-right direction. Therefore, in this state, the lever handle 200 is a position facing the user. And it will be in the state located just in the center of the mixed water discharge area.

In this single lever mixing faucet, the lever handle 214 is in the water stop state shown in FIG. 15 in a state where the lever handle 214 is positioned at the center of the rotational range in the left-right direction, that is, in a state where the lever handle 214 is positioned facing the user. As shown in FIG. 17B, the communication opening 226 of the movable valve body 208 is opened to the water inlet valve hole 216 and the hot water inlet valve hole 218 in the fixed valve body 206 as shown in FIG. The side openings 216 </ b> A and 218 </ b> A and the inlet side opening 220 </ b> A in the outflow valve hole 220 are placed in communication with each other, and the water flowing in from the water inflow valve hole 216 and the hot water inflow valve hole 218 inflow here. The hot water flows out from the outflow valve hole 220 in a mixed state.
At this time, mixed water obtained by mixing equal amounts of water and hot water is discharged from the water outlet.

  Further, in this state, when the lever handle 214 is rotated in the right and left direction perpendicular to the paper surface in FIG. 15, the movable valve body 208 rotates and slides on the fixed valve body 206 to change the mixing ratio of water and hot water. Change the temperature of the water discharge to high or low.

  Then, as shown in FIG. 17A, when the lever handle 214 is turned fully to the left, the outlet opening 218A in the hot water inlet valve hole 218 and the inlet side opening 220A in the outlet valve hole 220 are here. Is in a communication state through the communication opening 226 of the movable valve body 208, and only hot water is discharged from the water outlet.

  Conversely, when the lever handle 214 is rotated to the right as shown in FIG. 17C, the outlet opening 216A in the water inlet valve hole 216 and the inlet side opening 220A in the outlet valve hole 220 are here. However, it will be in a communication state via the communication opening 226 of the movable valve body 208, and only water will be discharged from a water outlet.

  In addition, the water spout area | region which discharges only water and the hot water spout area | region which discharges only hot water are respectively set over the range of the predetermined angle (for example, 5 degrees) in the left-right direction, and these water spout area | region and hot water spout area | region The mixed water discharge area is set over an angle range of 80 °.

In the conventional single lever mixing faucet as described above, the lever handle 214 is normally located at the center position in the left-right rotation direction that is easy to use and is directly facing the user. Therefore, the user stops in this state. When the handle is unconsciously operated in the water state to discharge water, the mixed water is discharged first.
When the user originally intended to use water, the user turns the lever handle 214 to the right when viewed from the user and brings the lever handle 214 to the water discharge position. It becomes.
In this case, in spite of the fact that the user wants to drain water, regardless of the user's intention, the mixed water, that is, the hot water is discharged in addition to the water, and the hot water is wasted. It will be used.

In addition, the single lever mixing faucet aiming at the solution of such a subject is disclosed by the following patent document 2 and patent document 3. FIG.
However, in what is disclosed in Patent Document 2, the problem is solved by making the shape of the communication opening of the movable valve body different from the conventional one, which is different from the present invention.
This patent document 2 also discloses that the center position between the water inlet valve hole and the hot water inlet valve hole in the fixed valve body is shifted leftward as another solution.
However, the inlet openings on the back side of the water inlet valve hole and the hot water inlet valve hole are not disclosed, and therefore, the relationship between the shape and position of these and the outlet opening is not disclosed.

The one disclosed in Patent Document 3 also attempts to solve the problem by making the shape and position of the water inflow valve hole and the hot water inflow valve hole in the fixed valve body different from the conventional ones.
However, even in the one disclosed in Patent Document 3, there is no mention of the relationship between the shape and position of the water inlet valve hole in the fixed valve body and the outlet opening and the inlet opening in the hot water inlet valve hole. .

JP 2003-28319 A JP 2010-185569 A Japanese Patent No. 3200540

  The present invention is based on the above circumstances, and a single lever mixing faucet that can effectively prevent hot water from being consumed unnecessarily by an unconscious operation of a user is provided as a conventional single lever mixing water. The purpose of the present invention is to provide a stopper at a low cost without any significant modification.

Thus, according to the first aspect of the present invention, there is provided (a) a fixed valve body having a water inlet valve hole and a hot water inlet valve hole and a mixed water outlet valve hole, and (b) the water inlet valve hole and / or hot water. A communication opening that communicates the inflow valve hole and the outflow valve hole; and a movable valve body that slides on the fixed valve body; and (c) a lever handle that moves and operates the movable valve body, The lever handle is opened and closed by turning the lever handle in the vertical direction to adjust the flow rate of water discharge and water discharge, and the left and right rotation operation is positioned relative to the water inlet valve hole. In the single lever mixing faucet that adjusts the temperature of discharged water by changing the opening degree of the hot water inflow valve hole and the water inflow valve hole in an inverse relationship, the movable valve body in the water inflow valve hole Is the lever handle between the inlet opening on the opposite rear surface side and the inlet opening on the rear surface side in the hot water inlet valve hole. A surface-side exit opening on the movable valve body side of the water inflow valve hole and an exit opening on the surface side of the hot water inflow valve hole with respect to the center in the left-right direction along the rotation direction of the water The outlet side opening in the water inlet valve hole and the outlet side opening in the hot water inlet valve hole respectively correspond to the corresponding water inflow so that the center position in the left-right direction is spaced apart in the left direction. the valve hole and arranged shifting the position in the left direction with respect to each input side opening of the water inlet valve hole tare is, the lever handle is rotated in a range from the center position in front of the faucet body of the left Further, it is possible to rotate from the center position to the right direction within a range narrower than the rotation range in the left direction from the center position .

According to a second aspect of the present invention, there is provided (a) a fixed valve body having a water inflow valve hole and a hot water inflow valve hole and a mixed water outflow valve hole, and (b) the water inflow valve hole and / or the hot water inflow valve hole. A movable valve body that slides on the fixed valve body, and (c) a lever handle that moves and operates the movable valve body. The valve is opened and closed by rotating the valve in the vertical direction to adjust the flow rate of the discharge water and the water discharged, and is positioned on the left side relative to the water inlet valve hole by the rotation operation in the horizontal direction. In a single lever mixing faucet that adjusts the temperature of discharged water by changing the opening of the hot water inflow valve hole and the water inflow valve hole in a reverse relationship, the opposite side of the water inflow valve hole to the movable valve body Of the lever handle between the inlet opening on the rear surface side of the inlet and the inlet opening on the rear surface side of the hot water inlet valve hole. With respect to the center in the left-right direction along the movement direction, the surface between the outlet opening on the surface side of the movable valve body in the water inlet valve hole and the outlet opening on the surface side in the hot water inlet valve hole Each of the outlet side opening in the water inlet valve hole and the outlet side opening in the hot water inlet valve hole has a corresponding water inlet valve hole and a center position in the left and right direction so as to be spaced apart in the left direction. Thea arranged shifting the position in the left direction with respect to each input side opening of the water inlet valve bore is, the lever handle and can rotate in a range from the center position in front of the faucet body of the left, The rotation range from the center position to the left is a smaller angle than 90 degrees from the center position to the left .

According to a third aspect of the present invention, in any one of the first and second aspects , the outlet opening and the inlet opening of the water inlet valve hole and the outlet opening and the inlet opening of the hot water inlet valve hole are respectively in plan view. It is characterized by a partial overlap.

Effects and effects of the invention

  As described above, the present invention relates to the surface of the water inflow valve hole with respect to the center in the left-right direction between the back side entrance opening on the water inflow valve hole and the back side entrance opening in the hot water inflow valve hole. Water inlet valve hole and hot water inflow so that the center position in the left-right direction between the outlet side opening on the side and the outlet side opening on the surface side in the hot water inlet valve hole is located leftward, that is, separated from the hot water side Each of the outlet openings in the valve holes is shifted in the left direction with respect to each corresponding inlet opening.

  According to the present invention, each opening on the back side of the water inlet valve hole, the hot water inlet valve hole and the mixed water outlet valve hole in the fixed valve body, more specifically, the inlet side opening in the water inlet valve hole and the inlet in the hot water inlet valve hole. Each outlet opening on the surface side of the water inflow valve hole and the hot water inflow valve hole is positioned in the left direction from the conventional position while holding the outlet opening at the side opening and the outlet valve hole in the same shape and position as before. It is possible to arrange them in a shifted manner.

In this case, the outlet opening of the water inlet valve hole in the fixed valve body is set appropriately by setting the left-side separation distance of each outlet opening of the water inlet valve hole and the hot water inlet valve hole to each inlet side opening. When the lever handle that is positioned at the right-facing position for the user is opened, the communicating opening of the movable valve element is only in the water inflow valve hole. Specifically, it can be applied only to the outlet opening (overlapping), and only water can be discharged when the lever handle in the facing position is opened.
As a result, wasteful use of hot water can be effectively prevented, and hot water can be saved.

  The present invention does not change the position of the water inlet valve hole and the hot water inlet valve hole in the fixed valve body in the left direction as compared with the prior art, but in each opening on the back side, that is, in the water inlet valve hole and the hot water inlet valve hole. While holding each inlet side opening, and the outlet side opening on the back side of the mixed water outlet valve hole in the same shape and position as before, only the opening on the front side, specifically the water inlet valve hole and hot water It is possible to dispose only the outlet openings in the inflow valve hole in the left direction, and by this, the fixed valve body in the conventional single lever mixing faucet, particularly in the existing single lever mixing faucet It is possible to realize a single lever mixing faucet that can discharge only water when the lever handle at the position facing the user is opened only by replacing the fixed valve body while leaving the members around .

In the present invention, the lever handle is not only rotatable in the left direction from the central position of the faucet main body, but also in the range narrower than the central position to the left, and from the central position to the right. Can also be made to be rotatable (claim 1).

In addition, the lever handle can be rotated in the left direction from the center position of the faucet main body, and the rotation range from the center position to the left direction is set to a smaller angle than 90 degrees from the center position to the left direction. (Claim 2).

In the present invention, the outlet openings on the front surface side of the water inlet valve hole and the hot water inlet valve hole are provided in positions and shapes that do not overlap in plan view with the corresponding inlet openings on the rear surface side. It is also possible.
However, in this case, the flow of water and hot water reaching the fixed valve body from the upstream side is suddenly changed there, and a large resistance is generated against the flow of water and hot water in the same portion.
Therefore, according to claim 3 , the outlet side opening and the inlet side opening of the water inlet valve hole and the outlet side opening and the inlet side opening of the hot water inlet valve hole are provided in positions and shapes that partially overlap each other in plan view. It is desirable to keep it .

In addition , when the position where the lever handle is directly facing the user is a water discharge position for discharging only water, a predetermined range in the left and right direction including the position is set as a water discharge area. be able to.
It is desirable that the angle range of the water discharge area is 5 ° or more and 15 ° or less.

  Furthermore, in this case, it is desirable to provide a click mechanism that generates a click feeling when the lever handle passes the boundary between the mixed water discharge area and the water discharge area.

It is the figure which showed the internal structure of the single lever mixing faucet of a reference example . It is the figure which showed the inside of the valve cartridge of FIG. 1 with the peripheral part in the assembly | attachment state. It is the figure which decomposed | disassembled and showed the structural member of the valve cartridge in FIG. 2 with the peripheral member. It is the figure which showed the positional relationship of the assembly | attachment of the fixed valve body and bottom cover in FIG. It is the figure which showed the fixed valve body in the valve cartridge of FIG. It is the figure which showed the positional relationship of the fixed valve body and movable valve body in the various water discharge states of the example with the rotation operation position of the lever handle. It is a diagram showing a fixed valve body of the implementation of the invention. It is the figure which showed the positional relationship of the fixed valve body and movable valve body in the various water discharge states of the embodiment with the rotation operation position of a lever handle. It is the figure which showed the principal part of other embodiment of this invention. It is the figure which showed the fixed valve body in other embodiment of this invention. It is the figure which showed the shape of the front side and back side of the bottom cover of the cartridge case of the embodiment. It is the figure which showed the relationship between the bottom cover of FIG. 11, and the bottom part of a housing. It is the figure which showed the bottom cover in other embodiment of this invention. It is the figure which showed the relationship between the bottom cover of the embodiment, and the bottom part of a housing. It is the figure which showed the example of the conventionally well-known single lever mixing faucet. It is the figure which showed what is used conventionally as a fixed valve body of FIG. It is the figure which showed the positional relationship of the fixed valve body and movable valve body in the various water discharge states of the conventional single lever mixing faucet with the rotation operation position of the lever handle.

Next, an embodiment of the present invention will be described in detail with reference to the drawings together with a reference example .
1 (FIGS. 1 to 6 show a reference example), 10 is a sheet Ngurureba mixing faucet, and a faucet body 12, a lever handle 14 on its top.
Reference numeral 16 denotes a housing that forms the main body of the faucet body 12 and has a cylindrical peripheral wall 18 and a bottom portion 20 that is a separate body, and holds the valve cartridge 22 in an accommodated state therein. ing.

An insertion portion 24 integrally extends downward from the peripheral wall 18 in the figure.
The insertion portion 24 is inserted through the mounting hole 28 of the counter 26 downward, and the fastening nut 30 is screwed into the male screw formed on the outer peripheral surface of the counter 26 on the back side, so that the lower surface of the peripheral wall 18 is seated on the counter 26. The housing 16 is fastened and fixed to the counter 26.

A water / hot water inflow passage 32 and a mixed water outflow passage 34 are formed in the bottom portion 20, and the water / hot water inflow pipe 36 is connected to the bottom portion 20 in a state where the inside communicates with the inflow passage 32. In addition, the outflow pipe 38 is joined by welding in a state where the inside is communicated with the outflow passage 34.
In this example , the housing 16 is covered with a decorative cover 42 from the outside together with a fixing nut 40 that is screwed into the housing 16 to push in and fix the valve cartridge 22.

FIG. 2 shows the configuration of the valve cartridge 22 in detail along with the periphery.
In the figure, 44 is a cartridge case in the valve cartridge 22, and this cartridge case 44 has a two-part structure of an upper case main body 44-1 and a lower bottom cover 44-2, which are combined vertically. Thus, a cartridge case 44 is configured.

  The bottom cover 44-2 has a pair of cylindrical portions 46 and 47 projecting downward as shown in FIG. 3, and legs 48, and as shown in FIG. The tip (lower end) is brought into contact with the upper surface of the bottom portion 20 of the housing 16.

The bottom lid 44-2 has a water inlet 50 (see FIGS. 2 to 4) passing through the inside of one cylindrical portion 46 and a hot water inlet 51 (see FIG. 2) passing through the inside of the other cylindrical portion 47. 3, FIG. 4) is formed. Each of the water inflow port 50 and the hot water inflow port 51 is communicated with each of the water and hot water inflow passages 32 formed in the bottom 20 of the housing 16.
The mixed water outlet 52 is formed in the bottom lid 44-2 at a position different from the inlets 50 and 51.

A water chamber 54 communicating therewith is formed below the outflow port 52, and the mixed water flowing out from the outflow port 52 flows out to the outflow passage 34 in the bottom portion 20 through the water chamber 54. It is supposed to be.
Here, the water chamber 54 is formed between the bottom lid 44-2 and the bottom portion 20 and the peripheral wall 18 of the housing 16.

  On the upper surface of the bottom cover 44-2, as shown in FIGS. 3 and 4, a later-described outlet opening 50 A, 51 A at the upper end of the pair of inlets 50, 51 and an inlet later described at the upper end of the outlet 52. A cylindrical seal ring 56 having elasticity is held so as to surround each of the side openings 52A, and the seal ring 56 provides a watertight seal between the bottom cover 44-2 and a fixed valve body 58 described later. Has been.

As shown in FIG. 2, a fixed valve body 58 and a movable valve body 60 that slides on the upper surface of the cartridge case 44 are accommodated in the cartridge case 44.
Here, both the fixed valve body 58 and the movable valve body 60 are formed of disks.
The movable valve body 60 is operatively connected to a lever shaft 64 via a drive unit 62, and the lever shaft 64 is fixed to the lever handle 14 at its upper end side by a fixing screw 66 as shown in FIG. 64 moves together with the lever handle 14.

  The lower end portion of the lever shaft 64 is connected to the rotating body 70 through a support pin 68 so as to be integrally rotated, and the lever shaft 64 has a pair of fork portions 72 protruding downward as shown in FIG. The fork portion 72 is provided in the concave portion 74 of the driving portion 62.

  Thus, the lever shaft 64 rotates around the support pin 68 integrally with the lever handle 14, and rotates together with the rotating body 70 around the rotation axis of the rotating body 70, so that the operation of the lever handle 14 can be controlled by the drive unit. This is transmitted to the movable valve body 60 via 62, and the movable valve body 60 is slid in the corresponding direction.

  Specifically, when the lever handle 14 is rotated in the vertical direction in FIG. 1, the movable valve body 60 slides linearly in the horizontal direction in FIG. 2, and the lever handle 14 moves in the plane of FIG. 2, the movable valve body 60 rotates and slides in the direction perpendicular to the paper surface in FIG. 2.

As shown in FIG. 5, the fixed valve body 58 is provided with a water inflow valve hole 76, a hot water inflow valve hole 78, and a mixed water outflow valve hole 80 penetrating in the plate thickness direction.
In this example , the fixed valve body 58 includes a water inflow valve hole 76, a hot water inflow valve hole 78, and a mixed water outflow valve hole 80, respectively, on the surface side on the movable valve body 60 side and on the back surface side on the opposite side. And the shape is different.

FIG. 5B shows the shape of the back side.
In FIG. 5B, 76B represents the inlet opening in the water inlet valve hole 76, 78B represents the inlet opening in the hot water inlet valve hole 78, and 80B represents the outlet opening in the outlet valve hole 80. ing.
As shown in the figure, the entrance side openings 76B and 78B and the exit side opening 80B all have a circular shape with the same diameter, and their centers are isosceles triangles (here, regular triangles). It is located at each vertex.

  In the drawing, P1B is a center line connecting the left and right centers of the outlet side opening 80B and the left and right centers between the water inlet valve hole 76 and the inlet side openings 76B and 78B in the hot water inlet valve hole 78, and the fixed disk 58 is the back surface. The shape on the side is symmetrical with the center line P1B as the axis of symmetry.

  The upper part of the cylindrical seal ring 56 is fitted around the inlet openings 76B and 78B in the water inlet valve hole 76 and the hot water inlet valve hole 78 and further around the outlet opening 80B in the outlet valve hole 80. A circular fitting recess 82 is formed.

The inlet side opening 76B in the water inlet valve hole 76, the inlet side opening 78B in the hot water inlet valve hole 78, and the outlet side opening 80B in the outlet valve hole 80 shown in FIG. 5B are respectively shown in FIG. 16B. The inlet opening 76B in the water inflow valve hole 76 is arranged with the same shape and the same positional relationship as the corresponding opening of the conventional fixed valve body 206. Therefore, the water on the bottom lid 44-2 side shown in FIG. The shape and position of the inlet 50 are matched with each other (see FIG. 4), and the inlet side opening 78B in the hot water inlet valve hole 78 is also connected to the hot water inlet 51 of the bottom lid 44-2 shown in FIG. On the other hand, the shape and position are matched.
Further, the outlet opening 80B in the outlet valve hole 80 is also matched in shape and position with the outlet 52 in the bottom lid 44-2 in FIG.
In addition, the center line P1B in FIG. 5B is in a direction just facing the user. That is, when the lever handle 14 is positioned at a position facing the user, the lever handle 14 is in a direction that exactly matches the center line Q of the lever handle 14 (see FIG. 6).

In this example , the bottom cover 44-2 has the same shape as the conventionally used bottom cover 204B shown in FIG. 15, and the upper end of the water inflow passage 32 and the hot water inflow passage 32 of the bottom portion 20 in the housing 16 in the figure. The positions of the water inlet 50 and the hot water inlet 51 are determined on the basis of the respective openings.
Specifically, with reference to the center in the left-right direction between the openings at the upper ends of the water inflow passage 32 and the hot water inflow passage 32 in the drawing, the inlet openings 50B at the lower ends of the water inlet 50 and the hot water inlet 51 in the drawing. , 51B are aligned at the center in the left-right direction.
Further, the center in the left-right direction between the outlet openings 50A, 51A at the upper ends of the water inlet 50 and the hot water inlet 51 is made to coincide with the center in the left-right direction of each inlet-side opening 50B, 51B.
That is, the center in the left-right direction between the back-side entrance opening 76B of the water inflow valve hole 76 of the fixed valve body 58 and the back-side entrance side opening 78B of the hot water inflow valve hole 78 is the bottom 20 of the housing 16. It coincides with the center in the left-right direction between the upper end opening of the water inflow passage 32 and the upper end opening of the hot water inlet 32.

FIG. 5A shows the shape of the surface side of the fixed valve body 58.
In the figure, 76A and 78A represent the outlet opening at the water inlet valve hole 76 and the outlet opening at the hot water inlet valve hole 78, respectively, and 80A represents the inlet opening at the outlet valve hole 80.
Here, the outlet openings 76A and 78A each have an arc shape, and the inlet opening 80A in the outflow valve hole 80 has a small opening 80A-1 having a substantially semicircular shape, and a large opening that is wider and substantially fan-shaped. It has a shape having a portion 80A-2.

As shown in FIG. 5A, here, the left and right centers of the large opening 80A-2 of the inlet side opening 80A in the outlet valve hole 80, and the outlet side opening 76A and the hot water inlet valve hole in the water inlet valve hole 76 are shown. With respect to the center line P1A connecting the left and right centers with the exit side opening 78A in 78, the exit side openings 76A and 78A and the entrance side opening 80A have a symmetrical shape.
The center line P1A on the front surface side forms an angle θ _A (here, θ _A = 45 °) with respect to the center line P1B on the back surface side.

  That is, in this case, the center in the left-right direction between the front-side openings 76A and 78A is 45 ° apart from the left-right center between the rear-side outlet openings 76B and 78B. The outlet openings 76A and 78A are arranged so as to be shifted in the left direction along the rotation direction of the lever handle 14 with respect to the inlet openings 76B and 78B.

  However, here, the outlet side opening 76A and the inlet side opening 76B in the water inflow valve hole 76 partially overlap in plan view, and similarly, the outlet side opening 78A and the inlet side opening 76B in the hot water inlet valve hole 78 are partly overlapped. Furthermore, in the outflow valve hole 80, the inlet opening 80A and the outlet opening 80B partially overlap.

  In FIG. 2, the movable valve body 60 that slides on the upper surface of the fixed valve body 58 has both or either one of the water inflow valve hole 76 and the hot water inflow valve hole 78 in the fixed valve body 58 as the outflow valve hole 80. A communication opening 84 for communication is provided through the movable valve body 60 in the plate thickness direction.

The water and hot water that flowed in through the water inflow valve hole 76 and the hot water inflow valve hole 78 become mixed water through the mixing chamber 86 formed in the drive unit 62 and then flow into the bottom lid 44-2 from the outflow valve hole 80. It flows out to the provided outlet 52.
Note that an elastic seal ring (O-ring) 88 is provided between the movable valve body 60 and the driving portion 62 to have a watertight seal between them.
Here, the communication opening 84 of the movable valve body 60 has a substantially keyhole shape having a first portion 84-1 having a partial circular shape and a second portion 84-2 having a partial rectangular shape as shown in FIG. I am doing.

FIG. 6 shows the positional relationship between the fixed valve body 58 and the movable valve body 60 when the water spouting water, the mixed water spouting water, and the hot water spouting are swung together with the rotation operation position of the lever handle 14.
6 (B) and 6 (C), the lever handle 14 is located at the front center position of the faucet body 12 and faces the user (referred to as a reference position X (see FIG. 6 (A))). It represents a certain state.
6 (B) and 6 (C), Q represents the center line of the lever handle 14. At this time, the center line P2 of the movable valve body 60 (the movable valve body 60 has a symmetrical shape with the center line P2 as the axis of symmetry. Is located in the same direction as the center line Q of the lever handle 14, that is, in the direction facing the user.

In this example , as shown in FIG. 6 (a), the lever handle 14 can be turned to the left by an angle α (here, α = 90 °) from the reference position X facing the user, and the angle from the reference position X is A range of θ ₂ is a water discharge area, a range of an angle θ ₁ from the water discharge area is a mixed water discharge area, and a range of an angle θ ₃ from the mixed water discharge area is a hot water discharge area.

Here, the angle θ _{2 of} the water discharge area and the angle θ ₃ of the hot water discharge area are respectively set to 5 °, and α = 90 °, which is the entire rotation range of the lever handle 14, and θ _{2 of the} water discharge area. An angle θ ₁ = 80 ° excluding θ _{3 of the} hot water discharge area is set as the mixed water discharge area.

6 (B) and 6 (B) show a state when the lever handle 14 is rotated to the left by θ _A = 45 ° from the reference position X facing the user. At this time, the lever handle 14 is When the lever handle 14 is pivoted upward from the water-stopped state in the state where the lever handle 14 is pivoted upward from the water-stopping state, 6 (B), the communication opening 84 of the movable valve body 60 is more specifically connected to the water inflow valve hole 76 and the hot water inflow valve hole 78 in the fixed valve body 58. Therefore, in this state, water and hot water flow in equal amounts into the communication opening 84, and the mixed water is discharged from the spout of the faucet.

  When the lever handle 14 is rotated in the left-right direction within the mixed water discharge area from this state, the respective opening degrees of the water inflow valve hole 76 and the hot water inflow valve hole 78 change in a relationship of magnitude opposite to each other. The temperature of the mixed water discharged from the outlet changes.

  Then, when the lever handle 14 is rotated to the right fully beyond the mixed water discharge area, that is, when the lever handle 14 is rotated to the reference position X facing the user, only the water inflow valve hole 76 is here. A state where the movable valve body 60 communicates with the communication opening 84, specifically, a state where the movable valve body 60 communicates with the outflow valve hole 80 of the fixed valve body 58 via the communication opening 84, and only water from the inflow valve hole 76 passes through the outflow valve hole 80. It flows out and is discharged from the spout (spout).

On the other hand, when the lever handle 14 is rotated fully to the left beyond the mixed water discharge area, only the hot water inlet valve hole 78 is movable valve body as shown in FIGS. 60, the state of communicating with the outflow valve hole 80 of the fixed valve body 58 through the communication opening 84, where only hot water from the inflow valve hole 78 flows out through the outflow valve hole 80. The water is discharged from the faucet spout (hot water discharge).
The shapes of the water inflow valve hole 76, the hot water inflow valve hole 78, and the communication opening 84 in the movable valve body 60 are determined in advance.

In this example , when the lever handle 14 is opened at a reference position X facing the user, which is the position that is most convenient for the user, as shown in FIGS. 6 (B) and 6 (C). As shown, only the water inlet valve hole 76 is opened and water is discharged from the water outlet. That is, at this time, only water that does not contain hot water is discharged.

As described above, according to this example , when the lever handle 14 at the reference position X that is easy to use for the user is opened, only water that does not contain hot water is discharged.
Accordingly, it is possible to effectively prevent the hot water from being used unnecessarily against the user's intention, and to save hot water.

In this example , each opening on the back surface side of the fixed valve body 58, that is, each inlet side opening 76B, 78B in the water inflow valve hole 76 and the hot water inflow valve hole 78, and further on the back surface side in the outflow valve hole 80 of the mixed water. Since the side opening 80B is held in the same shape and position as the conventional one, the members around the fixed valve body 58 in the conventional single lever mixed faucet, particularly the existing single lever mixed faucet, are fixed. The single lever mixing faucet 10 of this example can be realized only by replacing the valve body 58.

In this example , the same movable valve body 60 as the conventional one can be used, and the communication opening 84 overlaps the water inflow valve hole 76 and the hot water inflow valve hole 78 in the fixed valve body 58. Since the area can be ensured to be expanded, and the shape of the overlapping portion of the communication opening 84 with the water inflow valve hole 76 and the hot water inflow valve hole 78 is reduced, there is an advantage that the problem of restricting the flow rate does not occur. .

7, FIG. 8 shows an implementation form of the present invention.
In FIG. 6, the lever handle 14 can be rotated to the left by α = 90 ° from the center position on the front of the faucet body, that is, the reference position X facing the user, and fully rotated to the left. In this state, hot water is discharged by opening the lever handle 14, but in this case, the position of the lever handle 14 when the hot water is discharged is far from the user, and is slightly operable. There are difficulties.
Therefore, in the embodiment shown in FIGS. 7 and 8, the angle range of the lever handle 14 turning in the left direction is smaller than that shown in FIG.

Specifically, here, the lever handle 14 can be rotated leftward from a reference position X facing the user within a range of a maximum α = 67.5 °, and as shown in FIG. The hot water (only hot water) is discharged at a position rotated to the left fully.
In this embodiment as well, the region extending from the reference position X where the lever handle 14 is directly facing the user to the angle θ ₂ in the left direction is the water discharge region, and the left region beyond the water discharge region is θ ₁ . A mixed water discharge area is formed over the angle, and a left area beyond the mixed water discharge area is set as a hot water discharge area over the angle θ ₃ .

Here, the water discharge area over the angle θ ₂ and the hot water discharge area over the angle θ ₃ are the same as the water discharge area shown in FIG. 6, and the angles of θ ₂ and θ ₃ are in the range of 5 °.
The mixed water spouting region spreading angle theta ₁ is in the range of 57.5 ° in this case, and the center position in the mixed water spouting area, to the left from the reference position X that directly faces the lever handle 14 to the user 33. The position is rotated by 75 °.
Accordingly, in this embodiment, as shown in FIG. 7, the inclination angle θ _A of the center line P1A in the fixed disk 58 is set to 33.75 °.

  In this embodiment, the center line Q of the lever handle 14, and hence the center line P2 of the movable valve body 60, is in a position facing the user, strictly speaking, the lever handle 14 is in a state where the lever handle 14 is in the water discharge area. When the lever is opened, only water is discharged, and the lever handle 14 is rotated 67.5 ° to the left from that position. Strictly speaking, the lever handle 14 is opened in the hot water discharge area. The water inlet valve hole 76 and the hot water inlet valve hole 78, more specifically their outlet openings 76A, 78A, are slightly shaped compared to those shown in FIG. 6 so that only hot water is discharged when operated. It is different.

In this embodiment, the water discharge area in the lever handle 14 is set to be slightly larger than that in the embodiment shown in FIG.
Specifically, the water spouting region is set over the minute angle θ ₄ further to the right from the reference position X where the lever handle 14 is directly facing the user, that is, over the angle θ ₂ + θ ₄ as a whole. .
Here, the angle of θ ₄ is 2.5 °. Therefore, the water discharge area covers a range of 7.5 °, which is 5 ° of θ ₂ plus 2.5 ° of θ ₄ .
Therefore, in this embodiment, the entire rotation range of the lever handle 14 in the left-right direction is β = 70 °.
The other points are basically the same as those in the reference example .
In the case of the embodiment shown in FIGS. 7 and 8, the position of the lever handle 14 when the hot water is discharged is closer to the user than in the example shown in FIG. The operability of is better.

If the user cannot clearly recognize whether the lever handle 14 is currently in the water discharge area or not, the user unintentionally discharges water containing hot water (mixed water containing a small amount of hot water). It can happen.
Therefore, it is preferable to provide means for allowing the user to recognize whether or not the lever handle 14 is in the water discharge area.

FIG. 9 shows an example in which a click mechanism is provided as means for that purpose.
As shown in the figure, here, a pin 92 having a protrusion 90 at the tip is attached to a rotating body 70 that rotates integrally with the lever handle 14, and a circle is formed on the side of the case body 44-1 in the cartridge case 44. An arc-shaped groove 94 is provided, and both ends in the circumferential direction are formed as stoppers 96 and 97. The protrusion 90 of the pin 92 can be rotated in the groove 94, and the lever handle 14 is brought into contact with the stoppers 96 and 97. The rotation in the left-right direction is defined.
Further, the case main body 44-1 is provided with an engagement protrusion 98 having a mountain-shaped cross section that protrudes from the bottom surface of the groove 94 toward the rotating body 70, and the protrusion 90 provided on the rotating body 70 elastically connects the engaging protrusion 98. When I get over, I try to generate a click feeling there.
In the figure, reference numeral 100 denotes a click mechanism that generates a click feeling with the protrusion 90 and the engagement protrusion 98.

In this example, the range in which the protrusion 90 moves between the stopper 97 and the engagement protrusion 98 is the water discharge area, and the protrusion 90 is moved when the lever handle 14 moves to the mixed water discharge area beyond the water discharge area. As the user gets over the engagement protrusion 98, a click feeling is generated, and the user is informed that the lever handle 14 has shifted from the water spouting area to the mixed water spouting area.
Or conversely, the lever handle 14 has shifted from the mixed water discharge area to the water discharge area by generating a click feeling when the protrusion 90 moves over the engagement protrusion 98 and moves upward in FIG. 9C. Is recognized by the user.
In this example, the angle range from the stopper 97 to the engagement protrusion 98 is the angle range of θ ₂ + θ ₄ shown in FIG.
However, the angle θ ₂ shown in FIG.

  In this way, the water discharge area is the position where the lever handle 14 is directly facing the user, more specifically, the reference position X where the lever handle 14 is at the center position in front of the faucet body 12 and is directly facing the user. It is desirable that the fountain area is set on both the left and right sides of the fountain so that the operability during the fountain can be improved.

10 to 12 show still another embodiment of the present invention.
In this example, the center line P1A of FIG. 10A in the fixed valve body 58, that is, the left and right centers of the outlet opening 80A in the outlet valve hole 80 on the surface side, the water inlet valve hole 76, and the hot water inlet valve hole 78. A center line P1A connecting the left and right centers between the outlet openings 76A and 78A on the front side is leftward (lever handle) at an angle θ _A (here, θ _A = 32.5 °) with respect to the reference direction Y. 14 is inclined in the left direction).
Here, the reference direction Y is the same direction as the center line P1B in FIG. 5B, and is just the direction facing the user.

  Specifically, the left and right centers of the upper end opening in the figure of the outflow passage 34 of the bottom portion 20 in the housing 16 and the left and right centers between the upper end openings of the water inflow path 32 and the hot water inflow passage 32 in the figure. Is the same direction as the direction of the lever handle 14 when the lever handle 14 is at the reference position X in FIG.

In this embodiment, the center line P1B of the fixed disk 58 on the back surface side in FIG. 10B, that is, the left and right centers of the outlet side opening 80B in the outlet valve hole 80, the water inlet valve hole 76 and the hot water inlet valve hole 78. The center line P1B connecting the left and right centers between the entrance openings 76B and 78B on the back surface side is also an angle θ _B (here, θ _B = the same as the center line P1A with respect to the reference direction Y). 10 °).

  The center line P1B is also inclined in the same direction as the center line P1A because the inlet side opening 76B in the water inlet valve hole 76 of the fixed valve body 58 and the inlet side valve hole 78A in the hot water inlet valve hole 78 are inclined. 5, the overlapping area of the outlet side opening 76A and the inlet side opening 76B in the water inflow valve hole 76 (plan view) by shifting the position to the left along the rotation direction of the lever handle 14 from that shown in FIG. This is because the overlapping area of the outlet side opening 78A and the inlet side opening 78B of the hot water inlet valve hole 78 is also increased.

However, if it does so, the position of each inlet side opening 76B, 78B in the water inflow valve hole 76 and the hot water inflow valve hole 78 in the fixed valve body 58 is the water inflow passage 32 and the hot water in the bottom portion 20 in the housing 16 of FIG. The position of the inflow passage 32 is shifted leftward with respect to the upper end opening in the figure.
Therefore, in this embodiment, the shape of the bottom cover 44-2 is different from that shown in FIGS.

11 and 12 show the shape of the bottom lid 44-2.
Here, FIG. 11A shows the shape of the front surface side of the bottom lid 44-2, and FIG. 11B shows the shape of the back surface side.
As shown in FIG. 11A, here, the left and right centers of the inlet side opening 52A on the surface side of the movable valve body 58 side at the outlet 52 and the outlet side opening 50A on the surface side of the water inlet 50 are shown. And a center line P2A connecting the left and right centers between the front-side outlet openings 51A at the hot water inlet 51 is inclined at an angle θ _B (here, θ _B = 10 °) with respect to the reference direction Y. is doing.

On the other hand, on the back side shown in FIG. 11B, the left and right centers between the inlet opening 50B at the water inlet 50 and the inlet opening 51B at the hot water inlet 51 are on the reference direction Y. positioned.
That is, the outlet opening 50A in the water inlet 50 of FIG. 11A and the outlet opening 51A in the hot water inlet 51 correspond to the corresponding inlet openings 50B in the water inlet 50 and the hot water inlet 51, respectively. The position is shifted to the left along the rotation direction of the lever handle 14 with respect to 51B.

  As a result, in the bottom lid 44-2 in the present embodiment, the outlet openings 50A and 51A in the water inlet 50 and the hot water inlet 51 are respectively connected to the water inlet valve hole 76 and the hot water inlet valve in FIG. The positions of the inlet openings 76B and 78B in the hole 78 coincide with each other, and the inlet openings 50B and 51B in the water inlet 50 and the hot water inlet 51 in FIG. The positions of the water inflow port 32 and the hot water inflow port 32 at the bottom portion 20 of the bottom portion 20 coincide with the upper end openings in the drawing.

In FIG. 11A, reference numeral 106 denotes a fitting recess on the bottom lid 44-2 side into which the seal ring 56 of FIG. 2 is fitted.
In FIG. 11B, reference numeral 108 denotes an annular groove for fitting the seal ring (O-ring) 110 of FIG.
Further, in FIG. 12B, 102 is a positioning protrusion formed at the tip of the leg 48, and 104 is a positioning hole provided in the bottom portion 20.

  In this embodiment, the water inlet valve hole 76 in the fixed valve body 58 and the inlet side openings 76B and 78B on the back side of the hot water inlet valve hole 78 are shifted in the left direction from that of the conventional fixed valve body. Therefore, the overlapping area of the front-side outlet openings 76A, 78A and the rear-side inlet openings 76B, 78B in the water inlet valve hole 76 and the hot water inlet valve hole 78, respectively, can be further expanded (see FIG. Can be expanded).

  And the flow of water and hot water from the inlet side openings 76B and 78B to the outlet side openings 76A and 78A in the water inlet valve hole 76 and the hot water inlet valve hole 78 is made smoother by expanding the overlapping area. As a result, it is possible to increase the flow rates of water and hot water at the time of water discharge, and to obtain an advantage of reducing the water flow noise generated during water flow.

  In the present embodiment, the positions of the inlet openings 76B and 78B on the back side of the water inlet valve hole 76 and the hot water inlet valve hole 78 of the fixed valve body 58 are shifted to the left as described above. Nevertheless, by changing the shape of the bottom lid 44-2 of the cartridge case 44, the water and hot water inflow passages 32 of the faucet body 12 are not changed, and the water and hot water inflow passages 32 are fixed. The inlets 76B and 78B of the water inflow valve hole 76 and the hot water inflow valve hole 78 in the valve body 58 can be connected to each other at the water and hot water inlets of the bottom cover 44-2 of the cartridge case 44. Further, the overlap area can be further increased by only partially replacing the bottom lid 44-2 of the cartridge case 44 while using the main body body of the conventional water faucet as it is.

  In the embodiment described above, the water chamber 54 is formed by providing the leg 48 and the cylindrical portions 46 and 47 on the bottom lid 44-2. However, as shown in FIGS. 13 and 14, the bottom lid 44-2 is used. It is also possible to eliminate the cylindrical portions 46 and 47 and the legs 48 on the side, and allow the bottom lid 44-2 to be directly seated on the bottom portion 20 of the housing 16 without forming the water chamber 54.

  Therefore, in the embodiment of FIGS. 13 and 14, in addition to the vicinity of the inlet openings 50B and 51B at the water inlet 50 and the hot water inlet 51 on the back side of the bottom lid 44-2, the outlet at the outlet 52 is provided. An annular groove 108 is provided around the side opening 52B to hold the seal ring (O-ring) 110 (see FIGS. 1 and 2), and the inlet opening 50B at the water inlet 50 is formed at the bottom of the housing 16. The inlet opening 51B of the hot water inflow port 51 is matched with the upper end opening of the hot water inflow passage 32 of the bottom 20 and the outlet side opening 52B of the outlet 52 is matched with the upper end opening of the 20 water inflow passage 32. So that the lower surface of the bottom cover 44-2 is seated in a sealed state in a watertight manner on the upper surface of the bottom portion 20 via the seal ring 110 in a state where the upper surface of the bottom lid 44-2 matches with the upper end opening of the outflow passage 34 of the bottom portion 20. It is.

Although the embodiment of the present invention has been described in detail with reference examples, this is merely an example. For example, in the single lever mixing faucet of the present embodiment, the peripheral wall 18 and the bottom portion 20 of the faucet body that accommodates the valve cartridge 22 are configured separately, but may be configured integrally. Further, as described above, the valve cartridge 22 can be configured not to have the legs 48, and the present invention can be configured in various forms without departing from the spirit thereof.

10 Single lever mixing faucet 12 Faucet body 14 Lever handle 58 Fixed valve body 60 Movable valve body 76 Water inflow valve hole 78 Hot water inflow valve hole 80 Outflow valve hole 76A, 78A, 80B Outlet opening 76B, 78B, 80A Inlet side Opening 84 Communication opening 100 Click mechanism

Claims (3)

(a) a fixed valve body having a water inflow valve hole and a hot water inflow valve hole and a mixed water outflow valve hole; and (b) the water inflow valve hole and / or the hot water inflow valve hole and the outflow valve hole. A movable valve body having a communication opening for communication, and a movable valve body that slides on the fixed valve body; and (c) a lever handle for moving the movable valve body. The valve is opened and closed to adjust the flow rate of the discharge water and the discharge water, and the hot water inflow valve hole located on the left side relative to the water inflow valve hole and the In a single lever mixing faucet that adjusts the temperature of discharged water by changing the opening of the inflow valve hole in a relationship of magnitude opposite to each other,
Along the direction of rotation of the lever handle between the inlet opening on the back side opposite to the movable valve body in the water inlet valve hole and the inlet opening on the rear side in the hot water inlet valve hole. The center in the left-right direction between the outlet opening on the surface side of the movable valve body in the water inlet valve hole and the outlet opening on the surface side in the hot water inlet valve hole with respect to the center in the left-right direction. The outlet opening in the water inlet valve hole and the outlet side opening in the hot water inlet valve hole respectively correspond to the corresponding water inlet valve hole and hot water inlet valve hole so that the positions are spaced leftward. Thea arranged shifting the position in the left direction with respect to each input side opening in is,
The lever handle is rotatable in the leftward direction from the central position of the faucet main body, and further rotated in the right direction from the central position within a range narrower than the rotational position in the leftward direction from the central position. Single lever mixing faucet characterized by being movable . (a) a fixed valve body having a water inflow valve hole and a hot water inflow valve hole and a mixed water outflow valve hole; and (b) the water inflow valve hole and / or the hot water inflow valve hole and the outflow valve hole. A movable valve body having a communication opening for communication, and a movable valve body that slides on the fixed valve body; and (c) a lever handle for moving the movable valve body. The valve is opened and closed to adjust the flow rate of the discharge water and the discharge water, and the hot water inflow valve hole located on the left side relative to the water inflow valve hole and the In a single lever mixing faucet that adjusts the temperature of discharged water by changing the opening of the inflow valve hole in a relationship of magnitude opposite to each other,
Along the direction of rotation of the lever handle between the inlet opening on the back side opposite to the movable valve body in the water inlet valve hole and the inlet opening on the rear side in the hot water inlet valve hole. The center in the left-right direction between the outlet opening on the surface side of the movable valve body in the water inlet valve hole and the outlet opening on the surface side in the hot water inlet valve hole with respect to the center in the left-right direction. The outlet opening in the water inlet valve hole and the outlet side opening in the hot water inlet valve hole respectively correspond to the corresponding water inlet valve hole and hot water inlet valve hole so that the positions are spaced leftward. Thea arranged shifting the position in the left direction with respect to each input side opening in is,
The lever handle can be rotated in a range in the left direction from the central position of the front surface of the faucet body, and a rotation range in the left direction from the central position is smaller than 90 degrees from the central position to the left direction. Single lever mixing faucet characterized by an angle . 3. The outlet side opening and the inlet side opening of the water inflow valve hole and the outlet side opening and the inlet side opening of the hot water inlet valve hole partially overlap each other in plan view. Features a single lever mixing faucet.