JPH0821545A - Coupling structure of disc cap and rotary shaft in single lever type water faucet - Google Patents

Abstract

PURPOSE:To provide a single lever type water faucet which is free from play and rattle when a handle is turned. CONSTITUTION:A stationary disc valve body 32 and a movable disc valve body 31 are installed under a head case while a rotary shaft 29 is installed over the head case, and a lever shaft 28 inserted to the rotary shaft 29 is pivoted on the rotary shaft 29 swingably, and the bottom of this lever shaft 28 is detained with a disc cap 30 fitted on the movable disc valve body 31. Thus a single lever type water cock is formed, in which a groove 43 stretching horizontally in the lever shaft swinging direction is furnished in either of the rotary shaft 29 and disc cap 30. A ridge 46 to be in slide engagement with this groove 43 is furnished on the other member, and rising surfaces 43a, 43a (46a, 46a) longer in the sliding direction are formed on the sliding surfaces of the groove 43 and ridge 46 in such an arrangement that the vertically directed tangents of the rising surfaces intersect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-lever type faucet which operates a single handle lever to stop water, switch water discharge, control flow rate, control mixed water temperature and the like.

[0002]

2. Description of the Related Art If a conventional single lever type faucet is shown,
This is as shown in FIGS. 14 to 17. As shown in the figure, in this faucet, a hot water supply pipe 2 and a water supply pipe 3 are connected in communication with the bottom surface side of the faucet body 1, and a water discharge pipe 4 is integrally formed on the front surface of the central portion. It is molded. Further, a cylindrical head portion 5 is incorporated in the central upper portion of the faucet body 1. The head portion 5 has a cylindrical head case 6, and a fixed disc valve body 7 and a movable disc valve body 8 are internally fitted and mounted on the lower side thereof. The fixed disc valve body 7 has a hot water inflow port 7a and a water inflow port 7b, and a mixed water discharge port 9, and the movable disc valve body 8 has a mixing chamber 10 for mixing hot water and water. There is.

A rotary shaft 11 is mounted on the upper side of the head case 6. A lever shaft 13 having an upper end connected to a handle lever 12 is inserted through the rotary shaft 11, and a vertically intermediate portion is supported by a pin 14 so as to be vertically rotatable. A ball-shaped operating portion 15 is formed at the lower end of the lever shaft 13, and the operating portion 15 is engaged with and connected to the movable disc valve body 8 via a disc cap 16.

Further, on the outer periphery of the upper end surface of the head case 6,
As best shown in FIG. 16, a stopper cylinder body 17 for regulating the horizontal rotation angle of the rotary shaft 11
Is arranged. The stopper tubular body 17 is externally fitted and attached to the tubular portion 18 of the rotary shaft 11, and the pin 1 described above is attached.
4, the lever shaft 13 and the rotary shaft 11 are integrally connected and coupled. As a result, the ceiling plate of the head case 6 is held between the stopper cylinder 17 and the rotary shaft 11. The rotation angle of the rotating shaft 11 is regulated by a locking claw portion 19 formed on the outer peripheral surface of the stopper cylinder 17 and a stopper 20 formed on the inner peripheral surface of the head case 6 on the upper end side. It is like this.

The head portion 5 constructed in this manner is disposed in the faucet body 1 via the back lid 21, and is a long screw 22.
It is connected and fixed by. In this case, by disposing tubular rubber packings 24 in the hot water and water inflow ports 21a and 21b and the mixed water outflow port 23 formed in the back lid 21, the partition wall 1a of the faucet body 1 is provided. The rubber packing 24 is elastically compressed between the fixed disc valve body 7 and the fixed disc valve body 7 to seal between both members. Rubber packing 2 at the same time
The elastic repulsive force 4 presses the fixed disc valve body 7 against the movable disc valve body 8 and also seals the two valve bodies 7 and 8.

In the conventional single-lever faucet constructed as described above, when the handle lever 12 is vertically rotated, the ball-shaped operating portion 15 of the lever shaft 13 swings around the pin 14. Then, the movable disc valve body 8 is moved in the horizontal direction of FIG. 14 (the vertical direction in FIG. 17) via the disc cap 16. As a result, the size of the opening area of each of the hot water and water inflow ports 7a and 7b of the fixed disk valve body 7 which overlaps with the mixing chamber 10 of the movable disk valve body 8 changes, and the discharge flow rate changes. In this case, the disc cap 16 is, as shown in FIG.
Locking projection 6 formed on the inner peripheral surface side of the head case 6
The head 16a is guided between a and 6a and moves vertically.

On the other hand, when the handle lever 12 is rotated in the horizontal direction shown by the arrow in FIG. 15, the rotary shaft 11 is rotated around the central axis of the head case 6 via the lever shaft 13, and the disc cap is rotated. 16 and movable disc valve body 8
Also comes to rotate in the horizontal plane. Therefore, the opening area of the hot water inflow port 7a of the fixed disk valve body 7 overlapping the mixing chamber 10 of the movable disk valve body 8 and the water inflow port 7b.
The ratio of the opening area of the mixed water changes, and as a result, the mixing ratio of hot water and water changes and the temperature of the mixed water changes. In this case, the head portion 16a of the disc cap 16 is supported between the locking projections 6a of the head case 6 as shown in FIG.
Rotate in a horizontal plane.

In this way, the single lever type faucet is
By rotating the handle lever 12 in the vertical direction and in the horizontal direction individually or in combination, the temperature and flow rate of the discharged mixed water are controlled.

[0009]

In the conventional single-lever type water faucet, as shown in FIG.
The head 16a of the disc cap 16 is guided or supported between the locking protrusions 6a of the head case 6 to change the horizontal movement direction for controlling the discharge flow rate of the disc cap 16 and the mixing ratio of hot water and water. It is designed to move in the horizontal rotation direction. Therefore, the locking projections 6a, 6a of the head case 6 and the head 16a of the disk cap 16 are
There is a disadvantage that a slight gap is always generated between the and, which causes play and rattling when the handle is operated.

The play and rattling at the time of operating the handle are enlarged and enlarged on the tip end side of the handle lever 12, so that the user feels an extremely great play and the use feeling is significantly impaired. Further, there is a drawback that the movement of the actual movable disk valve body 8 is delayed by the amount of the play and rattling, and the responsiveness deteriorates.

[0011]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art and has been improved and eliminated. A single lever type water faucet for moving a disk cap without play and rattling is provided. To do.

The means adopted by the present invention in order to solve the above problems is that the fixed disc valve body and the movable disc valve body are arranged on the lower side of the head case, and the rotary shaft is arranged on the upper side of the head case. The lever shaft inserted through the rotary shaft is swingably supported on the rotary shaft, and the lower end of the lever shaft is engaged with the disk cap fitted to the movable disk valve body.
By operating the handle lever from the upper side of the head case, the movable disc valve body is moved relative to the fixed disc valve body, and in the single lever type faucet that controls the opening and closing of the ports provided in these disc valve bodies, One of the rotary shaft and the disc cap is provided with a concave ridge portion extending in the horizontal direction along the swing direction of the lever shaft, and the other is provided with a convex ridge portion slidably engaged with the concave ridge portion. On the sliding surfaces of the concave and convex portions, a pair of two rising surfaces that are long in the sliding direction are formed so that the vertical tangents of the two rising surfaces intersect. It is a connecting structure between a rotating shaft of a single-lever type faucet and a disc cap. In addition, the set of the two surfaces may be formed by continuous curved surfaces or inclined surfaces facing each other in a V shape.

[0013]

In the single-lever faucet of the present invention, one of the rotating shaft and the disc cap is provided with a recessed portion extending horizontally along the swinging direction of the lever shaft, and the other is provided with the recessed portion. The ridges that are slidably engaged with the ridges are provided, and a pair of two-sided rising surfaces that are long in the sliding direction are provided on the sliding surfaces of these concave and convex ridges. It is formed so that the vertical tangent lines intersect. Therefore, when the disc cap slides on the rotating shaft, the deviation in the direction that intersects horizontally with the sliding direction is prevented by the pair of two rising surfaces, and the play and the direction that intersects horizontally with the sliding direction are prevented. Rattling is gone. Furthermore,
When the disc cap is rotated along with the rotation of the rotation shaft, the displacement in the rotation direction is prevented by the two rising surfaces,
There is no play or rattling in the rotation direction. Therefore, there is no play or rattling when the handle is operated.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the embodiments shown in the drawings. 1 to 10
FIG. 4 shows a single-lever faucet according to an embodiment of the present invention. In the faucet of this embodiment, the head portion 5 of the single lever type faucet is provided with a head case 27, a lever shaft 28, a rotary shaft 29, a disc cap 30, a movable disc valve body 31, a fixed disc valve body 32, It is composed of a back cover 33.

As shown in FIGS. 4 (a) and 4 (b), the head case 27 has guides 34 formed along the axial direction at several circumferential positions on its inner peripheral surface.
The main body of the lever shaft 28 has a quadrangular prism shape, and a main operating portion 35 and a sub operating portion 36 having an involute curved surface are formed in a bifurcated shape on the lower end side thereof.

A boss portion 38 is formed so as to project from one end surface side of the pin hole 37 of the lever shaft 28. This boss part 3
Reference numeral 8 is for preventing the wrong orientation of the lever shaft 28 when it is mounted.

The rotating shaft 29 has a small-diameter upper tubular portion 39,
The upper tubular portion 39 has a large-diameter lower tubular portion 40, and the edge portion of the upper end surface of the upper tubular portion 39 is an R surface portion. Further, an insertion hole 41 for the pin 14 is formed in the upper tubular portion 39 so as to penetrate the side surface thereof, and a recess 42 for grease storage is formed around the outer peripheral surface on one end side of the insertion hole 41. There is.

The rotating shaft 29 has upper and lower cylindrical portions 39 and 4
A mounting hole 45 for the lever shaft 28 that penetrates 0 in the vertical direction is formed. The mounting hole 45 has a groove that engages with and guides the boss portion 38 of the lever shaft 28 from the lower surface side to the upper end surface side of the mounting hole 45 so that the lever shaft 28 is inserted from below and does not come out upward. It is formed halfway.

On the lower surface side of the lower tubular portion 40 of the rotary shaft 29, there are provided two recessed ridges 43, 43 extending horizontally along the swinging direction of the lever shaft 28. Each recess 43 has a pair of two rising surfaces 43 that are long in the horizontal direction.
a and 43a are formed such that the vertical tangents of the two rising surfaces 43a and 43a intersect. The head case 27 is provided at several locations on the outer peripheral side surface of the lower tubular portion 40.
An engaging convex portion 44 that can be engaged with the guide 34 that is formed on the inner peripheral surface side is formed to project.

The disc cap 30 has two concave ridges 43, 43 provided on the upper surface side thereof and on the lower surface side of the rotary shaft 29.
Provided with ridges 46, 46 slidably engaged with the ridge 4.
A rack groove 47 and a convex tooth 48 that can be engaged with the main operating portion 35 and the sub operating portion 36 of the lever shaft 28 are formed in the intermediate portion between the six and 46. Each ridge 46 has a pair of two rising surfaces 46a, 46a that are long in the sliding direction.
The two rising surfaces 46a, 46a are formed so that the tangential lines in the vertical direction intersect. In this way, each ridge 46
The rising surfaces 46a, 46a and the two rising surfaces 43a, 43a of each recess 43 are formed so as to intersect the respective tangential lines in the vertical direction, so that the rising surfaces 46a, 46a are in close contact with each other for sliding engagement. You can Further, an oval or elliptical convex portion 49 is formed on the lower surface side of the disc cap 30.

Further, on the lower surface side of the disc cap 30, there is formed a concave portion 50 for forming a mixing chamber of hot water and water, and a piston mounting hole 51 for communicating with the water hammer is formed in communication with the concave portion 50. Has been formed. One end of the piston mounting hole 51 is open to the side surface of the disc cap 30.

On the upper surface side of the movable disc valve body 31, there is formed a concave portion 52 which fits with the oval or elliptical convex portion 49 of the disc cap 30 (see FIG. 8), and a rubber is provided between the two. The packing 53 is attached. A concave portion 54 for forming a mixing chamber is formed on the lower surface side of the movable disc valve body 31, and the concave portion 54 and the concave portion 52 communicate with each other.

On the other hand, the fixed disc valve body 32 is
It has the shape of a goldfish when viewed from above. As shown in FIGS. 9A and 9B, the fixed disc valve body 32 has a hot water inflow port 55 and a water inflow port 56.
A mixed water outflow port 57 is formed so as to penetrate the upper and lower surfaces. Recesses 58 are formed on the lower surface side of the disk valve body of these ports 55, 56, 57, respectively.

Further, as shown in FIG. 10, the back cover 33 is
Hot water inflow ports 59 and 60 and a mixed water outflow port 61 of the same shape are formed at the same positions as the fixed disc valve body 32, and the disc valve body upper surface side of each of these ports is directed upward. A convex portion having a tapered surface 62 that reduces in diameter is provided. The tapered surface 62
And a rubber packing 63 between the recess 58 of each port.
Is to be installed. Moreover, this case back 33
A concave portion 64 having the same shape and size as the fixed disc valve body 32 is formed on the upper surface side of the. This recess 6
As shown in FIG. 10A, a convex portion 65 is partially formed around the circumference of the No. 4 portion.

Next, an assembling procedure of the head portion 5 of the single lever type water faucet thus constructed will be described. To assemble, first, the lever shaft 28 is inserted upward into the mounting hole 45 of the rotary shaft 29 from the lower side thereof. Then, at the position where the boss portion 38 provided on the lever shaft 28 is engaged with the inner portion of the guide groove formed on one side surface of the mounting hole 45, the pin 14 is attached to the rotary shaft 2.
9 and the lever shaft 28, and they are integrally connected so that the lever shaft 45 can swing in the mounting hole 45 with the pin 14 as a pivot.

Thus, in this embodiment, the pin 14
The connection by means of only the two members of the rotary shaft 29 and the lever shaft 28, and the connection outside the head case 27, is extremely easy.

After that, the lever shaft 28 and the rotary shaft 29 are mounted in the mounting holes 66 of the head case 27 with the head case 27 turned upside down. The mounting can be easily performed by bringing the outer peripheral surface side of the rotary shaft 29 into contact with the guide 34 on the inner peripheral surface of the head case 27 shown in FIG. 4A. Moreover, in this case, the edge portion of the upper end surface of the upper tubular portion 39 of the rotary shaft 29 is formed into the R surface, and the mounting in the mounting hole 66 is very smooth.

After the mounting of the rotating shaft 29, the locking projections 44 on the outer peripheral surface of the rotating shaft 29 are locked to the guides 34, and the rotation range of the rotating shaft 29 is regulated. FIGS. 5A and 5B show a state in which the locking projections 44 of the rotary shaft 29 are in contact with the guides 34 at the limit positions of their respective rotation ranges, and the rotation is restricted. Is. By thus providing the rotary shaft 29 and the guide 34 with a stopper function, it is possible to omit the components of the conventional stopper cylinder body 17 shown in FIGS. 14 and 16.

After that, with the head case 27 turned upside down, the disc cap 30 is attached to the lower surface of the rotary shaft 29.
Then, the concave portion 52 of the same shape of the movable disc valve body 31 is externally fitted and attached to the oval or elliptical convex portion 49 of the disc cap 30. This allows the disc cap 3
0 and the movable disc valve body 31 can be integrally operated in any direction in a horizontal plane without a gap.

Then, the fixed disc valve body 32 is placed on the movable disc valve body 31, and the concave portion 64 of the back cover 33 having the same shape as the fixed disc valve body 32 is inserted into the fixed disc valve body 3.
2 is externally fitted to the back cover 33, and fixed to the back cover 33.
Fix both so that 2 does not move.

Finally, the entire head case 27 assembled in this manner is inverted so that the top and bottom are returned to the original state, and a long screw is used together with the back cover 33 in the same manner as in the conventional case. It may be fixed to the faucet body 1. As a result, the faucet body 1, the back cover 33, and the head case 27 are integrally connected by screws. Therefore, the back cover 33
The fixed disc valve body 32 fitted and mounted in the recess 64 of
Since it is integrated with the faucet body 1, it does not move unnecessarily relative to the movable disc valve body 31.

The usage of the faucet of this embodiment is as follows.
As in the conventional case, the discharge flow rate and the temperature of the mixed water are controlled by the raising / lowering swinging operation of the handle lever 12 and the rotating operation. By raising and lowering the handle lever 12, the disc cap 30 and the movable disc valve body 31 that operates integrally with the disc cap 30 via the main operating portion 35 and the sub operating portion 36 of the lever shaft 28 move from the water-stopped state of FIG. Move to the state of maximum discharge flow rate.

At this time, the main operating portion 35 and the sub operating portion 36 are joined to the disc cap 30 through the involute curved surface, and the joining surfaces change with each other, so that wear locally progresses. However, it does not cause rattling. Further, by using the involute curved surface, even if there is a pivotal movement about the pin 14 of the lever shaft 28 as a fulcrum, it is possible to move the disc cap 30 horizontally without prying it, so that the valve body can be smoothly moved. It is possible to secure the operation. The same effect can be obtained even if the involute curved surface is a cycloid curved surface.

When the handle lever 12 is rotated, the recesses 43, 43 of the rotary shaft 29 and the protrusions 46, 46 of the disc cap 30 are engaged with each other to rotate them integrally. Like On the lower surface side of the disc cap 30, oval or elliptical concave and convex portions 49, 5
Since the movable disc valve body 31 is mounted via the second disc 2, the movable disc valve body 31 has an opening area ratio between the hot water port 55 of the fixed disc valve body 32 communicating with the mixing chamber 54 and the water port 56. To change the temperature of the mixed water.

In this case, the engagement between the rotary shaft 29 and the disc cap 30 is made by the concave streak portions 43, 43 and the convex streak portions 46, 46, so that the disc is rotated relative to the rotary shaft 29. When the cap 30 slides, each recess 4
Since the rising surfaces 43a, 43a of No. 3 and the corresponding rising surfaces 46a, 46a of the protrusions 46 are in close contact with each other to prevent a shift in the direction horizontally intersecting the sliding direction, play during sliding and Rattling is gone. Further, when the disc cap 30 is rotated in accordance with the rotation of the rotary shaft 29, the rising surfaces 43a, 43a of the respective concave stripes 43 and the corresponding rising surfaces 46a, 46a of the convex stripes 46 come into close contact with each other. Since the displacement in the rotation direction is prevented, there is no play and rattling at the time of rotation. When the disc cap 30 is rotated, the rotation shaft 29
The turning power of the rising surface 43a of each recess 43,
43a and the corresponding rising surfaces 46a, 46 of the ridge 46
It is smoothly transmitted to the disc cap 30 via a.
Further, by fitting the disc cap 30 and the movable disc valve body 31 through the oval or elliptical concave-convex portion, it is possible to remove the gap in the rotational direction between them.

Therefore, in the water faucet of this embodiment, it is possible to smoothly move the movable disc valve body 31 without the play and rattling of the handle operation, and the operation feeling is good. Moreover, since the fixed disc valve body 32 does not move unnecessarily, the temperature of the mixed water can be controlled corresponding to the operation of the movable disc valve body 31, and the control is accurate.

By the way, the present invention is not limited to the above-mentioned embodiment, and is not limited to the form and type of the target single-lever faucet. What is important is that the lever shaft inserted through the rotating shaft is pivotally supported on the rotating shaft so that the lower end of the lever shaft is engaged with the disk cap fitted to the movable disk valve body, and In a single-lever faucet of the type that performs valve operation, the rotary shaft and the disc cap are slidably engaged with the concave and convex portions, and when the disc cap slides and rotates. The purpose is to prevent play and rattling between the rotary shaft and the disc cap.

As such a modified example, the one shown in FIGS. 11 to 13 can be considered. The one shown in FIG. 11 is a rising surface 43 composed of a pair of inclined surfaces that are long in the sliding direction of the two recessed portions 43, 43 provided on the rotary shaft 29.
a and 43a are formed so that the vertical tangents thereof intersect with each other, and the two projections 46 and 46 provided on the disc cap 30 are formed by a pair of inclined surfaces that are long in the sliding direction. The surfaces 46a, 46a are formed so that the tangential lines in the vertical direction intersect.

In the structure shown in FIG. 12, the vertical tangents of the rising surfaces 43a, 43a formed of a pair of inclined surfaces that are long in the sliding direction of the recessed portions 43 provided on the rotary shaft 29 intersect. In addition, the ridges 46 provided on the disc cap 30 are formed so that the vertical tangents of the rising surfaces 46a, 46a formed of a set of two inclined surfaces that are long in the sliding direction intersect in the vertical direction. There is. Although illustration is omitted, it is also possible to provide one of the two concave stripes 43, 43 on the disc cap 30 and provide the corresponding convex stripe 46 on the rotary shaft 29.

In the structure shown in FIG. 13, the vertical tangents of the rising surfaces 43a, 43a formed of a set of two curved surfaces that are long in the sliding direction of the single groove 43 provided on the rotary shaft 29 intersect. In addition, the vertical tangents of the rising surfaces 46a, 46a formed of a pair of curved surfaces that are long in the sliding direction of the one convex strip 46 provided on the disc cap 30 intersect with each other. Has been formed.

[0041]

As described above, according to the present invention,
When the disk cap slides and rotates with respect to the rotating shaft, there is no play or rattling in the direction horizontally intersecting the sliding direction and the rotating direction. Therefore, the play and rattling at the time of operating the steering wheel and the responsiveness of the valve operation are not deteriorated, and the operation feeling is extremely good.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a head portion when a water faucet according to the present invention is closed.

FIG. 2 is a vertical cross-sectional view showing the head portion of the water faucet according to the present invention at the maximum discharge flow rate.

FIG. 3 is a partial sectional side view showing the entire faucet according to the present invention.

4A and 4B show a head case of a water faucet according to the present invention, wherein FIG. 4A is a bottom view and FIG. 4B is a sectional view taken along the line AA of FIG. 4A.

5A and 5B show an engagement relationship between a head case and a rotary shaft of a water faucet according to the present invention, FIG. 5A is a bottom view showing a discharge state of only hot water, and FIG. 5B is a discharge state of only water. It is a bottom view which shows.

FIG. 6 is a partially longitudinal cross-sectional front view showing the main components of the head part of the water faucet according to the present invention in an exploded manner.

FIG. 7 is a partially longitudinal cross-sectional side view showing the main parts of the head part of the water faucet according to the present invention in an exploded manner.

8A and 8B show a movable disc valve body of a water faucet according to the present invention, wherein FIG. 8A is a plan view and FIG. 8B is a bottom view.

9A and 9B show a fixed disc valve body of a water faucet according to the present invention, FIG. 9A is a plan view, and FIG. 9B is a bottom view.

10A and 10B show a back cover of a water faucet according to the present invention, wherein FIG. 10A is a plan view and FIG. 10B is a bottom view.

FIG. 11 is a front view showing exploded main parts of a head portion of another embodiment of the water faucet according to the present invention.

FIG. 12 is a front view showing exploded main parts of a head portion of another aspect of the water faucet according to the present invention.

FIG. 13 is a front view showing exploded main parts of a head portion of still another embodiment of the water faucet according to the present invention.

FIG. 14 is a vertical sectional side view showing the entire conventional single-lever faucet.

FIG. 15 is a partial cross-sectional front view showing the entire conventional single-lever faucet.

FIG. 16 is an exploded perspective view showing a head portion of a conventional single-lever water faucet.

FIG. 17 is a bottom view showing the disc cap after removing the movable disc of the conventional single-lever faucet.

[Explanation of symbols]

5 ... Head part 12 ... Handle lever 27 ... Head case 28 ... Lever shaft 29 ... Rotating shaft 30 ... Disk cap 31 ... Movable disk 32 ... Fixed disk 43 ... Recessed ridge 46 ... Relief ridge 43a ... Rise surface 46a ... Standing Raised surface

Front page continuation (72) Inventor Kuniaki Sakakibara 5-1-1 Koiehoncho, Tokoname City, Aichi Prefecture Inax Co., Ltd.

Claims (3)

[Claims] 1. A fixed disk valve body and a movable disk valve body are arranged on the lower side of the head case, a rotary shaft is arranged on the upper side of the head case, and a lever shaft inserted through the rotary shaft is used as the rotary shaft. The movable disc valve body is fixed to the fixed disc valve by pivotally supporting the movable disc valve body by engaging the lower end of the lever shaft with the disc cap fitted to the movable disc valve body and operating the handle lever from the upper side of the head case. In a single-lever faucet that moves relative to the body and controls the opening and closing of the ports provided in these disc valve bodies, in one of the rotary shaft and the disc cap, a horizontal direction along the swing direction of the lever shaft Is provided on the other side, and the other side is provided with a convex line part which is slidably engaged with the concave line part, and the two sliding surfaces of the concave line part and the convex line part are long in the sliding direction. One set of startup surfaces is two startup surfaces Coupling structure between the rotating shaft and the disk cap single lever faucet vertical tangent is characterized in that it is formed to intersect. 2. The connecting structure for a rotary shaft of a single-lever faucet and a disc cap according to claim 1, wherein the pair of two rising surfaces are formed as continuous curved surfaces. 3. The connecting structure for a rotating shaft of a single-lever water faucet and a disc cap according to claim 1, wherein the pair of two rising surfaces are formed as inclined surfaces facing each other in a V shape.