JP5236404B2 - Single lever faucet - Google Patents

Description

  The present invention relates to a single lever faucet, and more particularly to a single lever faucet of a type in which a valve case of a valve unit is fixed in a pushed state by screwing a fixing nut.

As a single lever faucet that adjusts the amount of water discharged and discharged by operating a single lever handle and adjusting the temperature of discharged water, the valve case of the valve unit is pressed by screwing a fixing nut, and the valve unit is Conventionally known is a type in which the body body as a holding body is fixed in a pressed state.
For example, Patent Document 1 below discloses this type of single lever faucet.

FIG. 9 shows a specific example.
In the figure, reference numeral 200 denotes a valve unit (valve cartridge), which has a fixed valve body 202 and a movable valve body 204 that slides on the fixed valve body 202, and these are accommodated in the valve case 206. .
Here, the movable valve body 204 includes a sliding body 207 in contact with the fixed valve body 202 and a driven portion 208 that is driven by an operation of a lever handle described later.
Reference numeral 210 denotes a housing as a main body, which has a cylindrical peripheral wall 212 and a bottom portion 214.

216 is a cylindrical rotating body rotatably incorporated in the valve case 206, and 218 is coupled to the rotating body 216 via a support pin 220, and rotates around the support pin 220 integrally with the lever handle. Further, the driving arm rotates with the rotating body 216 around the axis of the rotating body 216, transmits the operation of the lever handle to the movable valve body 204, and slides the movable valve body 204 in a corresponding direction.
Here, the support pin 220 is oriented in a direction perpendicular to the paper surface, and its axial end is fitted into a holding hole that is provided in the rotator 216 in the radial direction and is held there.

  The valve case 206 has a divided structure of an upper case body 230 and a lower bottom lid 232, which are combined with each other.

The case body 230 is opposed to the support pin 220 in the radial direction, and rises in a state in which the case body 230 is fitted to the outer peripheral surface of the rotating body 216 so as to be relatively rotatable, and the radial direction follows the rising wall 222. It has a shape having a shoulder portion 224 projecting annularly outward and a peripheral wall 226 falling from the outer peripheral end of the shoulder portion 224.
The shoulder 224 has a horizontal surface in the drawing, specifically, a surface perpendicular to the axis of the housing 210, and the rising portion 222 rises vertically from the upper surface of the shoulder 224.
Here, the rising wall 222 functions as a prevention wall that prevents the support pin 220 from coming off.

  Reference numeral 228 denotes a fixing nut. When the fixing nut 228 is screwed into the housing 210, the valve case 206, specifically, the upper case body 230 is pressed downward, and the valve unit 200 is fixed in a pressed state inside the housing 210. .

The valve unit 200 includes a ring-shaped elastic seal member 234 that seals between the bottom 214 and the bottom lid 232 of the housing 210 in a watertight manner, and a ring that seals between the bottom lid 232 and the fixed valve body 202 in a watertight manner. Seal members 236 and 238 having a ring-like elasticity, and ring-like elasticity seal members 240 for watertightly sealing between the sliding body 207 and the driven portion 208 in the movable valve body 204 are provided. The seal members 234, 236, and 238 are each elastically compressed in the pushing direction by the downward pushing force applied to the valve unit 200 by the screwing of the nut 228.
Each of the sealing members 234, 236 and 238 performs sealing based on the compression force.
That is, in the single lever faucet shown in FIG. 9, the seal by the seal members 234, 236, and 238 is ensured by pushing in the fixing nut 228.

  In the case of the single lever faucet shown in FIG. 9, the fixing nut 228 presses the shoulder 224 of the case main body 230 in the valve case 206, that is, the outer peripheral side portion of the case main body 226 downward.

  However, a cavity S for the moving space of the movable valve body 204 is formed below the outer peripheral portion. Therefore, when the case main body 226 is pressed downward by the fixed nut 228, the shoulder 224 is formed. Therefore, the tightening force by the fixing nut 228 is not effectively applied to the seal members 234, 236 and 238 located on the radial center side of the valve case 206. And 238 are not sufficiently deformed by compression, and it has been found that there is a problem that it is difficult to exert a sufficient seal.

  In the example of FIG. 9, the valve case 206 is divided into an upper case main body 230 and a lower bottom cover 232, and the case main body 230 is relatively relative to the bottom cover 232 by screwing a fixing nut 228. This is an example in which the seal members 236 and 238 are compressed by moving downward, but the seal member 234 cannot be sufficiently compressed even when the case main body 230 and the bottom cover 232 have an integrated structure. There is a problem, and even in this case, there arises a problem that the seal by the seal member 234 is not sufficient.

  As prior art to the present invention, the following Patent Document 2 discloses an invention concerning a single lever type faucet, in which a cover nut (which presses a cartridge case (valve case) by screwing into a main body (main body)) ( The locking ring is inserted between the fixing nut) and the cartridge case, and the cover nut and the cartridge case are integrally rotated via the locking ring. The locking ring 13 is also formed on the upper surface of the cartridge case. Although the contact point is disclosed in the figure, this rotation ring does not press the cartridge case downward and is different from the present invention.

Patent Document 3 below discloses an invention about a single lever type mixing faucet, in which a stopper ring is fitted on the upper part of the cartridge case (valve case), and the ring contacts the upper surface of the cartridge case. The point is disclosed.
However, this also does not press the upper surface of the cartridge case by screwing the fixing nut, and is different from the present invention.

JP 2003-28320 A JP-A-9-242924 JP-A-11-22837

  The present invention is based on the circumstances as described above, and the pushing force by screwing the fixing nut can be effectively acted on the center side of the valve case, and thus the sealing member can be effectively compressed and deformed, and the sealing member The purpose of the present invention is to provide a single lever faucet that can sufficiently exert the sealing function by the above and has high reliability of sealing.

Thus, the present invention comprises (a) a fixed valve body, a movable valve body that slides on the fixed valve body, and a valve case that houses the fixed valve body and the movable valve body. A valve unit; (b) a cylindrical rotating body rotatably provided inside the valve case; and (c) a support pin coupled to the rotating body via a support pin, and the support integrally with the lever handle. Rotating motion around the pin and rotating around the axis of the rotating body together with the rotating body, transmitting the operation of the lever handle to the movable valve body, and sliding the movable valve body in a corresponding direction The valve unit is in a state in which an upper portion of the valve case and a portion facing the support pin in the radial direction are fitted to the outer peripheral surface of the rotating body so as to be relatively rotatable. A main body that is a cylindrical rising wall that rises and holds the valve unit In the single lever faucet in which the valve case is pressed by screwing the fixing nut into the day and the elastic sealing member is compressed and deformed in the pressing direction by screwing the fixing nut. A first pressing portion that presses the uppermost end surface of the rising wall of the valve case in the pressing direction is provided.

  According to a second aspect of the present invention, the valve case according to the first aspect of the present invention includes a shoulder portion projecting in an annular shape radially outward from the rising wall at a lower portion following the cylindrical rising wall, and the shoulder portion. The fixed nut is further provided with a second pressing portion that presses the shoulder portion in the pressing direction.

  According to a third aspect of the present invention, the valve unit according to any one of the first and second aspects, wherein the valve case is divided into an upper case body and a lower bottom lid, and the fixing nut is screwed. Thus, the case main body is pushed and moved relative to the bottom lid to compress at least a part of the seal member.

Effects and effects of the invention

As described above, the present invention is screwed into the body body holding the valve unit, and presses the upper end surface of the rising wall of the valve case in the pushing direction to the fixing nut that fixes the valve unit to the body body in a pushed state. According to the present invention, it is possible to apply a pressing force due to screwing of the fixing nut to the valve case at a position closer to the center of the valve case than in the past.
Thereby, it is possible to effectively exert a pushing force by screwing the fixing nut against the elastic seal member, and the seal member can be sufficiently compressed in the pushing direction.
As a result, the sealing function of the sealing member can be made sufficiently higher than before, and the reliability of the sealing can be improved.

  According to a second aspect of the present invention, the valve case has a shoulder portion projecting in an annular shape radially outward from the rising wall at a lower portion following the cylindrical rising wall, and a peripheral wall falling from the outer peripheral end of the shoulder portion. The shape of the fixing nut is further provided with a second pressing portion that presses the shoulder portion in the pressing direction. According to claim 2, the first pressing portion provided on the fixing nut Not only can the pushing force by screwing the fixing nut be applied to the upper end surface of the rising wall, but also the pushing force by the second pressing portion of the fixing nut is applied to the shoulder portion protruding radially outward. be able to.

  Thereby, the pushing force by a fixed nut can be exerted more effectively with respect to a sealing member via a valve case, and sealing performance can be improved further.

Note that it is difficult to bring the first pressing portion and the second pressing portion of the fixing nut into contact with the upper end surface and the shoulder portion of the rising wall at the same time due to dimensional variation and assembly variation during component manufacturing. Sometimes it happens.
In this case, first, the second pressing portion comes into contact with the shoulder portion, and when the shoulder portion is bent and deformed by a small amount by the pressing by the second pressing portion, the first pressing portion comes into contact with the upper end surface of the rising wall. The positions or shapes of the first pressing portion and the second pressing portion can be set so as to press this.
If it does in this way, each of a 1st press part and a 2nd press part can be made to contact | abut to the upper end surface and shoulder part of a standing wall reliably, and the pushing force of a fixed nut can be exerted on them.

  In the present invention, the valve case in the valve unit can be applied to an upper case main body and a lower bottom lid that are integrally structured. In this case also, the contact portion between the valve case and the main body However, the present invention is particularly advantageous in that the valve case is divided into an upper case body and a lower bottom lid. The present invention is suitable for application in which at least a part of the seal member is compressed by moving the case main body in the pushing direction relative to the bottom lid by screwing.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, reference numeral 10 denotes a counter as a mounting base. A water faucet body 12 and a water discharge portion 14 are provided at positions separated from the counter 10.
The water discharge unit 14 includes a water discharge head 16 and a holder 18 that holds the water discharge head 16, and the water discharge head 16 can be pulled out from the storage position together with the flexible hose 20 connected thereto. .

The water discharge head 16 has a water discharge port 22 on the lower surface of the tip, and a switching operation unit 24 for switching the water discharge from straight water discharge to shower water discharge or vice versa is provided on the front surface thereof.
The entire water discharger 14 is also movable up and down between the raised position and the lowered position with the sliding movement of the slide tube 26.

The faucet body 12 accommodates a valve unit (valve cartridge) 46 to be described later, and a lever handle 28 is provided on the upper portion thereof, and the lever handle 28 is operatively connected to the valve unit 46. Has been.
Reference numeral 30 denotes an inflow pipe for allowing water and hot water to flow into the faucet body 12, and here the inflow pipe 30 is formed of a flexible pipe.

Reference numeral 32 denotes an outflow pipe through which water, hot water or mixed water (hereinafter simply referred to as mixed water) flows out from the faucet body 12, and here the outflow pipe 32 is formed of a copper pipe.
The end of the hose 20 is connected to the lower end of the outflow pipe 32 via a connection fitting.

In FIG. 2, the internal structure of the faucet body 12 is shown in detail along with its peripheral part.
As shown in the figure, the faucet body 12 is fastened and fixed to the counter 10 by a fastening nut 36 via a triangular packing 38 in a mounting hole 34 formed in the counter 10.

In FIG. 2, reference numeral 40 denotes a housing that forms the main body of the faucet body 12. The housing 40 has a cylindrical resin-made peripheral wall 42 and a metal bottom portion 44 that is a separate body. The valve unit 46 is held in the accommodated state.
Similarly, a resin insertion portion 48 extends downward from the resin peripheral wall 42 in the figure.
The insertion portion 48 is inserted through the mounting hole 34 downward, and the fastening nut 36 is screwed into the external thread formed on the outer peripheral surface of the counter 10 so that the lower surface of the peripheral wall 42 is seated on the counter 10. The housing 40 is fastened and fixed to the counter 10.

A water / hot water inflow passage 50 and a mixed water outflow passage 52 are formed in the bottom portion 44, and the inflow pipe 30 is screwed with respect to the bottom portion 44 in a state where the inside communicates with the inflow passage 50. The outflow pipe 32 made of the above-mentioned copper pipe is joined by welding in a state where the inside is communicated with the outflow passage 52.
In this embodiment, the housing 40 is covered from the outside with a decorative cover 54 together with a fixing nut 56 described later.

FIG. 3 shows the configuration of the valve unit 46 in detail together with the peripheral portion in the assembled state.
As shown in the figure, the valve unit 46 includes a fixed valve body 58 made of a ceramic disk and a movable valve body 60 that slides on the fixed valve body 58. Contained.

Here, the movable valve body 60 includes a sliding body 62 made of a ceramic disk that directly contacts the fixed valve body 58 and a sliding body 62 that is driven by the operating force from the lever handle 28 and moves integrally with the sliding body 62. And a driven part 64 which is a separate body.
The fixed valve body 58 is provided with a water / hot water inlet 66 and a mixed water outlet 68.
On the other hand, the movable valve body 60 is formed with a mixing chamber 70 for mixing water and hot water flowing from the inlet 66.
The mixed water in the mixing chamber 70 flows out downward in the figure through the outlet 68 of the fixed valve body 58.

The valve case 65 has a two-part structure composed of an upper case body 72 and a lower bottom lid 75 in the drawing, and the valve case 65 is configured by combining them vertically.
Specifically, as shown in FIG. 7, the case main body 65 is provided with elastic pieces protruding downward at a plurality of locations in the circumferential direction, and through holes are provided with through-holes 74.

On the other hand, the bottom lid 75 is provided with an upward protruding portion in the figure at a corresponding circumferential position, and a locking claw 76 is provided at the tip of the protruding portion. I am being taken into custody.
The case main body 72 and the bottom lid 75 are assembled to each other by the elastic engagement action of the locking holes 74 and the locking claws 76.

In this embodiment, the engaging hole 74 is larger in the vertical direction in the figure than the engaging claw 76, and the engaging claw 76 can move relatively up and down in the engaging hole 74.
FIG. 4 shows a state before the fixing nut 56 is screwed. At this time, the locking claw 76 is substantially in contact with the lower side of the locking hole 74.
When the fixing nut 56 is screwed in this state and a downward pushing force is applied to the case main body 72 in the figure, the case main body 72 moves downward relative to the bottom lid 75, and the final state shown in FIG. In this assembled state, the locking claw 76 is positioned at the upper and lower intermediate positions of the locking hole 74.
That is, in this embodiment, the upper case main body 72 can be moved downward relative to the bottom lid 75 in the drawing.

As shown in FIGS. 7 and 8, the bottom lid 75 has a pair of cylindrical portions 78 projecting downward from the lower surface and legs 80, as shown in FIGS. These tips (lower ends) are brought into contact with the upper surface of the bottom 44 of the housing 40.
An inflow passage 81 for water and hot water is formed inside the pair of cylindrical portions 78, and the inflow passage 81 is formed in the bottom 44 as shown in FIGS. 2, 3, and 4. An inflow passage 66 and an inflow port 66 formed in the fixed valve body 58 are communicated with each other.
An outflow passage 82 communicating with the outflow port 68 of the fixed valve body 58 is provided at a position different from the inflow passage 81.

The mixed water in the mixing chamber 70 flows out to the outflow passage 82 of the bottom lid 75 through the outflow port 68 of the fixed valve body 58 and further flows out to the lower water chamber 84.
The mixed water that reaches the water chamber 84 is sent to the water discharger 14 through the outflow pipe 32 and the hose 20.
Here, the water chamber 84 is formed between the bottom lid 75 and the bottom portion 44 and the peripheral wall 42 of the housing 40.

  As shown in FIGS. 3, 6, 7, and 8, an elastic ring-shaped seal member 85 is held in the annular groove on the outer peripheral surface of the bottom lid 75. 85, the space between the outer peripheral surface of the bottom lid 75 and the inner peripheral surface of the peripheral wall 42 of the housing 40 is sealed in a watertight manner.

  On the other hand, a ring-shaped seal member 86 having elasticity is held in the annular groove so as to surround the inflow passage 81 on the front end surface (lower end surface) of the cylindrical portion 78 in the bottom cover 75. The seal member 86 provides a watertight seal between the cylindrical portion 78 and the bottom portion 44.

  On the other surface of the bottom cover 75, a pair of elastic ring-shaped seal members 88 and 90 are held so as to surround the pair of inflow passages 81 and outflow passages 82 as shown in FIG. These sealing members 88 and 90 seal the space between the bottom lid 75 and the fixed valve body 58 in a watertight manner.

  In the movable valve body 60, an elastic ring-shaped seal member 92 is held on the upper surface of the sliding body 62 so as to surround the mixing chamber 70, and the sliding member 62 and the driven body are held by the sealing member 92. The space between the portions 64 is sealed in a watertight manner.

Here, all of the seal members 86, 88, 90 are compressed and deformed by receiving a downward force in the drawing, and exhibit a sealing function under the compression deformation state.
In particular, the seal members 88 and 90 have a vertically long cross-sectional shape as shown in FIGS. 3 and 4, and the repulsive force is fixed by compressing the seal members 88 and 90 up and down. Acting between the valve body 58 and the sliding body 62 of the movable valve body 60, the fixed valve body 58 and the sliding body 62 are brought into good contact with each other based on their elastic repulsive force, and fixed. Watertight contact between the valve body 58 and the sliding body 62 is ensured.

In FIG. 3, reference numeral 94 denotes a rotating body that is rotatably incorporated in the valve case 65.
As shown in FIG. 7, the rotating body 94 has a cylindrical shape, and has a flange portion 96 projecting radially outward in an annular shape at the lower end thereof.
A drive arm 98 is fastened and fixed to the lever handle 28 by a fixing screw 100 as shown in FIG. 2, and moves integrally with the lever handle 28.
The drive arm 98 is coupled to the rotating body 94 via the support pin 102.
Here, the support pin 102 is oriented in a direction perpendicular to the paper surface, and the shaft end portion is fitted into a through-holding hole provided in the rotating body 94 and held there.

  As shown in FIG. 7, a pair of fork portions 104 are provided in a projecting shape at the lower end portion of the drive arm 98 in the figure, and these fork portions 104 are connected to the driven portion 64 of the movable valve body 60. It is engaged in the recess 106.

  The drive arm 98 rotates together with the lever handle 28 around the support pin 102, and rotates together with the rotating body 94 around the rotation axis of the rotating body 94, thereby transmitting the operation of the lever handle 28 to the movable valve body 60. The movable valve body 60 is slid in the corresponding direction.

Specifically, when the lever handle 28 is rotated in the vertical direction in FIG. 2, the drive arm 98 rotates in the horizontal direction around the support pin 102 in FIG. 3, and the movable valve body 60 moves in the horizontal direction in the drawing. To stop the water and adjust the amount of water.
When the lever handle 28 is rotated in a direction perpendicular to the paper surface in FIG. 2, the driving arm 98 rotates together with the rotating body 94 about its axis, and the movable valve body 60 rotates in the same direction to mix. Allow the water temperature to be adjusted.

The driven portion 64 in the movable valve body 60 incorporates a water hammer prevention mechanism 108.
The water hammer prevention mechanism 108 includes a cylinder wall 110, a piston 112 fixed to the rotating body 94 in a state of being slidably fitted to the cylinder wall 110, and a valve body slidably fitted to the piston 112. 114 and a water passage 116.

  The water hammer preventing mechanism 108 allows water to flow in and out through the water passage 116 when the movable valve body 60 moves in the left-right direction in FIG. 3, and rapidly closes the lever handle 28 based on the resistance at that time (water stoppage). Operation) and water hammer is prevented.

  The above-mentioned case main body 72 of the valve case 65 in the valve unit 46 has a portion (a portion around the support pin 102) that faces the support pin 102 in the radial direction and can rotate relative to the outer peripheral surface of the rotating body 94. A cylindrical rising wall 118 that rises in such a state.

As shown in FIGS. 3, 7, and 8, the case main body 72 has a lower portion that continues to the rising wall 118 as a shoulder portion 120 that protrudes radially outward in an annular shape. A portion following the lower side of the portion 120 is a cylindrical peripheral wall 122 that falls from the outer peripheral end of the shoulder portion 120.
Here, the rising wall 118 serves as a prevention wall that prevents the support pin 102 from coming off the rotating body 94.
Further, the lower surface of the shoulder portion 120 is brought into contact with the upper surface of the flange portion 96 of the rotating body 94 so as to be rotatable.

  As shown in FIG. 3 (and FIG. 2), the fixing nut 56 that presses the case main body 72 downward has a female screw on the inner peripheral surface of the portion that fits the peripheral wall 42 in the housing 40. The female screw is screwed into the male screw on the outer peripheral surface of the upper end portion of the peripheral wall 42, and the pushing force by the screwing is exerted downward on the case body 72, that is, on the valve unit 46.

As shown in the partially enlarged views of FIGS. 3 and 2, the fixing nut 56 is in contact with the upper end surface of the rising wall 118 in the case body 72 in the downward direction and presses it downward. The portion 124 is provided in an annular shape in the circumferential direction so as to protrude radially inward.
The fixing nut 56 is also provided with a second pressing portion 126 that annularly contacts the shoulder 120 of the case main body 72 and presses it downward in a circumferential direction.
Reference numeral 128 denotes a tool engaging portion formed with a smaller diameter than the internal thread portion of the fixed nut 56 made of a cap nut. The tool engaging portion 128 has a hexagonal planar shape as shown in FIG. ing.

The second pressing portion 126 projects outward in the radial direction so as to connect the tool engaging portion 128 and a large-diameter cylindrical portion having a female screw portion in the radial direction.
Note that the upper surface of the shoulder 120 in the case main body 72 forms a surface perpendicular to the axis of the peripheral wall 42 in the housing 40, that is, a horizontal surface in FIG. The bottom surface is also a horizontal surface.

  In this embodiment, after the valve unit 46 is fitted inside the housing 40, the valve unit 65 is fixed in a pressed state in the housing 40 by screwing the fixing nut 56 into the peripheral wall 42 of the housing 40.

At this time, the bottom lid 75 of the valve case 65 is pressed against the bottom 44 of the housing 40 while compressing and deforming the seal member 86 by the pressing force generated by screwing the fixing nut 56.
Further, the case main body 72 in the valve case 65 moves relatively downward relative to the bottom lid 75 by the pushing force of the fixing nut 56, and at this time, as shown in the partially enlarged view of FIG. 90 is compressed and deformed downward to provide a watertight seal between the bottom lid 75 and the fixed valve body 58, and a repulsive force due to the compression deformation is exerted on the fixed valve body 58. The sliding body 62 of the valve body 60 is brought into strong contact with each other, and the contact surface between the fixed valve body 58 and the sliding body 62 is brought into a watertight seal state.

  In this embodiment, the fixing nut 56 includes a first pressing portion 124 and a second pressing portion 126, and presses the upper end surface of the rising wall 118 of the case body 72 and the upper surface of the shoulder portion 120 downward to fix the fixing nut 56. The pushing force generated by screwing the nut 56 is applied to the case main body 72.

According to the present embodiment as described above, the pushing force due to screwing of the fixing nut 56 can be applied to the valve case 65 at a position closer to the center than in the prior art.
As a result, a pressing force by screwing the fixing nut 56 can be effectively exerted on the seal member 86 and further on the seal members 88 and 90, and the seal members 86, 88 and 90 are sufficiently compressed and deformed in the pressing direction. Can be made.
As a result, the sealing function of the seal members 86, 88, and 90 can be fully exhibited compared to the conventional case, and the reliability of the seal can be improved.

  Furthermore, in the present embodiment, the valve case 65 is formed on the lower portion following the cylindrical rising wall 118, from the shoulder portion 120 projecting radially outward from the rising wall 118, and from the outer peripheral end of the shoulder portion 120. According to this embodiment, the fixing nut 56 is further provided with a second pressing portion 126 that presses the shoulder portion 120 in the pressing direction. In addition to pressing the upper end surface of the rising wall 118 downward with the first pressing portion 124 provided on the nut 56, the pressing force by the second pressing portion 126 of the fixing nut 56 is also applied to the shoulder portion 120. be able to.

  Thereby, the pushing force by the fixing nut 56 can be more effectively exerted on the seal members 86, 88, 90 via the valve case 65, and the sealing performance can be further enhanced.

  In the present embodiment, the valve case 65 has a divided structure of the upper case body 72 and the lower bottom lid 75, and the case main body 72 is relative to the bottom lid 75 by screwing the fixing nut 56. By moving in the pushing direction, the seal members 88 and 90 inside the valve case 65 are sufficiently compressed, and the sealing function can be exhibited.

Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, the present invention can be applied to a case in which the valve case 65 in the valve unit 46 is not divided into an upper case body and a lower bottom cover, and has an integral structure. In addition, the case main body 72 does not have the shoulder portion as described above, and therefore, only the first pressing portion 124 can be provided on the fixing nut 56.
Furthermore, the present invention can be applied to various forms of single lever faucets other than the above-exemplified forms, and the present invention is configured in various modifications without departing from the spirit of the present invention. Is possible.

It is a figure which shows the schematic whole structure of the single lever faucet which is one Example of this invention. It is a figure which shows the internal structure of the faucet main body in the embodiment with a peripheral part. It is a figure which shows the valve unit in the embodiment with a peripheral part in the assembly | attachment state. It is a figure which shows the valve unit in FIG. 3 with a peripheral part in the state before fixing nut fastening. It is a perspective view which decomposes | disassembles and shows each member of FIG. It is sectional drawing which decomposes | disassembles and shows each member of FIG. It is a perspective view which decomposes | disassembles and shows each member of FIG. It is sectional drawing which decomposes | disassembles and shows each member of FIG. It is a figure which shows the principal part of an example of the conventional single lever faucet.

Explanation of symbols

28 Lever handle 40 Housing 46 Valve unit (valve cartridge)
56 Fixed nut 58 Fixed valve body 60 Movable valve body 65 Valve case 72 Case body 75 Bottom cover 86, 88, 90 Seal member 94 Rotating body 98 Drive arm 102 Support pin 118 Rising wall 120 Shoulder part 122 Peripheral wall 124 First pressing part 126 Second pressing part

Claims (3)

(B) a fixed valve body, a movable valve body that slides on the fixed valve body, a valve unit that includes the fixed valve body and a valve case that houses the movable valve body therein, and (b) the valve case. A cylindrical rotating body rotatably provided in the interior of the rotating body, and (c) coupled to the rotating body via a support pin, and rotates around the support pin integrally with the lever handle. A drive arm that rotates around the axis of the rotating body together with the body, transmits the operation of the lever handle to the movable valve body, and slides the movable valve body in a corresponding direction;
The valve unit is a cylindrical rising wall that rises in a state in which an upper portion of the valve case and a portion facing the support pin in a radial direction are fitted to the outer peripheral surface of the rotating body so as to be relatively rotatable. And the valve case is pressed by screwing the fixing nut into the body body holding the valve unit, and the elastic seal member is compressed and deformed in the pressing direction by screwing the fixing nut. In the faucet, the fixed nut is provided with a first pressing portion that presses the uppermost end surface of the rising wall of the valve case in the pushing direction. 2. The valve case according to claim 1, wherein the valve case includes a shoulder portion projecting annularly outwardly in the radial direction from the rising wall, and a downwardly extending portion from the outer peripheral end of the shoulder portion at a lower portion following the cylindrical rising wall. It has a shape with a surrounding wall that falls,
A single lever faucet characterized in that the fixing nut is further provided with a second pressing portion for pressing the shoulder portion in the pressing direction.   3. The valve unit according to claim 1, wherein the valve case has a split structure in which the valve case is divided into an upper case main body and a lower bottom lid, and the case main body is screwed into the fixing nut. A single lever faucet characterized by compressing at least a part of the sealing member by being pushed and moved relative to the lid.

Images