JP2932239B2 - Single lever type faucet - Google Patents

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 for controlling water stoppage, water discharge, flow rate control, mixed water temperature, etc., by operating one handle lever.

[0002]

2. Description of the Related Art If a conventional single lever type faucet is shown,
11 to 14. As shown in FIG. 12 , in this faucet, a hot water supply pipe 2 and a water supply pipe 3 are connected to each other on the bottom side of the faucet main body 1, and a water discharge pipe 4 is integrally formed on the front surface at the center. Is molded. Further, a tubular head portion 5 is incorporated in the upper central portion of the faucet body 1. FIG.
As shown in FIG. 1, the head portion 5 includes a cylindrical head case 6.
The fixed disk valve element 7 and the movable disk valve element 8 are fitted in the lower part thereof. Fixed disk valve 7
Has an inflow port (not shown) of hot water and water and a discharge port 9 of mixed water, and the movable disk valve element 8 has a mixing chamber 10 for mixing hot water and water.

A rotating 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 rotating shaft 11. The lever shaft 13 is supported by a pin 14 at a vertically intermediate portion so as to be rotatable in the front-rear direction by a pin 14. I have. 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 disk valve element 8 via a disk cap 16.

Further, on the outer periphery of the upper end surface of the head case 6,
As best shown in FIG. 13, a stopper cylinder 17 for restricting the horizontal rotation angle of the rotating shaft 11 is provided.
Is arranged. The stopper cylinder 17 is externally fitted to the cylindrical portion 18 of the rotating shaft 11, and
4 integrally connects and couples to the lever shaft 13 and the rotating shaft 11. As a result, the ceiling plate of the head case 6 is sandwiched between the stopper cylinder 17 and the rotating shaft 11. The rotation angle of the rotating shaft 11 is regulated by a locking claw 19 formed on the outer peripheral surface of the stopper cylinder 17 and a stopper 20 formed on the inner peripheral surface on the upper end side of the head case 6. It has become.

[0005] The head section 5 thus constructed is disposed in the faucet body 1 via the back cover 21 and has a long screw 22.
Are connected and fixed. In this case, the cylindrical rubber packing 24 is disposed at each of the inflow port and the outflow port 23 of the hot water and the water formed in the back cover 21 so that the partition wall 23 of the faucet main body 1 and the fixed disk can be fixed. The rubber packing 24 is elastically compressed between the valve body 7 to seal between the two members. At the same time, the rubber packing 24 presses the fixed disk valve element 7 against the movable disk valve element 8 by the elastic repulsive force, and also seals the two valve elements 7 and 8.

In the conventional single lever type faucet constructed as described above, when the handle lever 12 is turned up and down, the ball-shaped operation portion 15 of the lever shaft 13 swings about the pin 14. And move the movable disk valve element 8 forward and backward.
(The left-right direction in FIG. 11) . As a result, the size of the opening area of each inflow port of hot water and water of the fixed disk valve element 7 overlapping the mixing chamber 10 of the movable disk valve element 8 changes, and the discharge flow rate changes.

On the other hand, when the handle lever 12 is turned in the horizontal direction indicated by the arrow in FIG. 12, the rotation shaft 11 is turned around the center axis of the head case 6 via the lever shaft 13 and the movable disk The valve 8 also rotates in the horizontal plane. Therefore, the ratio between the opening area of the hot water inflow port and the opening area of the water inflow port of the fixed disk valve element 7 overlapping with the mixing chamber 10 of the movable disk valve element 8 changes, and as a result, the mixing ratio of hot water and water becomes low. And the temperature of the mixed water changes.

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

[0009]

However, the conventional single lever type faucet has the following drawbacks when assembling the head portion 5. That is, as shown in FIG. 13, first, the rotating shaft 11 is inserted into the mounting hole 25 from below the head case 6, and the head portion 5 is stoppered to the cylindrical portion 18 that has protruded upward from the mounting hole 25, as shown in FIG. The cylindrical body 17 is externally fitted. Then, the lever shaft 13 is inserted into the rotating shaft 11 from above, and these three members are integrally connected with the pin 14.

As shown in FIG. 14, the insertion of the rotating shaft 11 into the mounting hole 25 is free within the head case 6 because the rotating shaft 11 is much smaller than the head case 6. , And it is difficult to align with the mounting hole 25, and there is a disadvantage that the mounting takes time.

The rotating shaft 11 and the stopper cylinder 17
It is necessary to integrally connect the three members of the lever shaft 13 with the pins 14 by using pins 14. Since the positioning of these pin holes must be performed in the vertical direction and the circumferential direction, it has been extremely difficult. Moreover, the insertion of the pin 14 can be performed only at the position of the notch 26 formed on the upper end surface of the head case 6, and the insertion of the pin 14 itself is troublesome.

As described above, in the conventional single lever type faucet, the connecting operation of the rotating shaft 11, the stopper cylinder 17 and the lever shaft 13 by the pin 14, and the attaching operation of the rotating shaft 11 to the head case 6 are performed. And it was difficult to automate.

[0013]

SUMMARY OF THE INVENTION The present invention has been improved and eliminated in view of the above-mentioned problems, and is a single lever type in which the head can be easily assembled and the number of parts can be reduced. A faucet will not be provided.

[0014] In order to solve the above problems, the present invention employs a single lever type faucet.
The fixed disk valve element and the movable disk valve element are arranged on the lower side of the head case, and the rotating shaft for rotating the movable disk valve element is arranged on the upper side of the head case,
A lever shaft for moving the movable disc valve body in the horizontal direction is inserted into the rotating shaft, and the handle lever is operated from the upper side of the head case to fix the movable disc valve body via the lever shaft and the rotating shaft. In a single lever type water faucet which is moved relative to a disc valve body and controls opening and closing of ports provided in these disc valve bodies, the outer peripheral surface of the rotary shaft is brought into contact with and guided on the inner peripheral surface side of the head case. guiding the provided axially from the lower end opening of the head case, in the provision of the engaging protrusion for restricting the rotation range of the rotary shaft engages with the guide to the outer peripheral surface of the rotating shaft.

[0015]

In the single-lever type faucet of the present invention, a guide for joining to the outer peripheral surface of the rotating shaft is provided on the inner peripheral surface side of the head case in the axial direction from the lower end opening of the head case . For this reason, the mounting of the rotating shaft into the mounting hole of the head case only needs to be pushed along the guide, which is extremely simple.

Further, on the outer peripheral surface of the rotary shaft, there is provided a locking projection which locks with the guide of the head case and regulates the rotation range of the rotary shaft. Therefore, the conventional stopper cylinder can be omitted. In addition, this allows the lever shaft to be mounted on the rotating shaft in advance and can be mounted in the mounting hole of the head case, which not only simplifies the pin insertion operation, but also simplifies the assembling operation of the entire head portion. Automation is possible.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below with reference to the embodiments shown in the drawings. 1 to 10
1 shows a single lever type faucet according to one embodiment of the present invention. In the water faucet of this embodiment, the head portion 5 of the single lever type water faucet includes a head case 27, a lever shaft 28, a rotating shaft 29, a disk cap 30, a movable disk valve body 31, a fixed disk valve body 32, It consists of a back cover 33.

As shown in FIGS. 4 (a) and 4 (b), the head case 27 has guides 34 protruding in the axial direction from the lower end opening at several locations on the inner peripheral surface in the circumferential direction. Have been. The main body of the lever shaft 28 has a quadrangular prism shape, and a main operation portion 35 and a sub operation portion 36 having an involute curved surface are formed at the lower end thereof in a forked shape. A boss portion 38 is formed on one end surface side of the pin hole 37 of the lever shaft 28 so as to protrude. The boss portion 38 is for preventing the orientation of the lever shaft 28 from being mistaken when the lever shaft 28 is mounted.

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

On the other hand, on the lower surface side of the lower cylindrical portion 40, two R-shaped slide grooves 43, 43 are formed in the diameter direction. At several locations on the outer peripheral side surface of the lower cylindrical portion 40, locking projections 44 that can engage with guides 34 formed on the inner peripheral surface side of the head case 27 are formed so as to protrude.

Further, the rotary shaft 29 is provided with a mounting hole 45 for the lever shaft 28 which penetrates the upper and lower tubular portions 39 and 40 in the vertical direction. The mounting hole 45 is provided for the lever shaft 2.
A groove for engaging with and guiding the boss portion 38 of the lever shaft 28 is formed from the lower surface side of the mounting hole 45 toward the upper end surface thereof so as not to come out from the upper portion through the lower portion 8. I have.

The disk cap 30 has two slide grooves 43 provided on the lower surface of the rotary shaft 29 on the upper surface thereof.
43, which can be engaged with the ridges 43,
The main operation unit 3 of the lever shaft 28
A rack groove 47 and a convex tooth 48 that can be engaged with the sub-operation portion 36 and the sub-operation portion 36 are formed. Also, the disc cap 30
An oval or elliptical convex portion 49 is formed on the lower surface side of.

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

A concave portion 52 is formed on the upper surface side of the movable disk valve element 31 to be fitted with the oval or elliptical convex portion 49 of the disk cap 30 (see FIG. 8). The packing 53 is mounted. A concave portion 54 for forming a mixing chamber is formed on the lower surface side of the movable disk valve element 31, and the concave portion 54 and the concave portion 52 communicate with each other.

On the other hand, as shown in FIGS. 9A and 9B, the fixed disk valve 32 has a hot water inflow port 55, a water inflow port 56, and a mixed water An outflow port 57 is formed through the upper and lower surfaces. Recesses 58 are formed on the lower surfaces of the disc valve bodies of these ports 55, 56, 57, respectively.

Also, as shown in FIG.
Hot water inlet ports 59 and 60 and mixed water outlet ports 61 of the same shape are formed at the same position as the fixed disk valve body 32, and these ports are formed on the disk valve body upper surface side in the upward direction. A projection having a tapered surface 62 that reduces the diameter is provided. The tapered surface 62
And a rubber packing 63 between the recess 58 of each port.
Is to be mounted. Moreover, this back cover 33
A concave portion 64 having the same shape and the same size as the fixed disk valve body 32 is formed on the upper surface side. This recess 6
As shown in FIG. 10A, a convex portion 65 is partially formed around the periphery of FIG.

Next, the procedure for assembling the head portion 5 of the single lever type water faucet constructed as described above will be described. First, the lever shaft 28 is inserted upward into the mounting hole 45 of the rotating shaft 29 from below. Then, at a position where the boss portion 38 provided on the lever shaft 28 is locked in a deep portion of the guide groove formed on one side surface of the mounting hole 45, the pin 14 is
9 and the lever shaft 28, and the two are integrally connected in the mounting hole 45 so that the lever shaft 45 can swing about the pin 14 as a pivot point.

As described above, in this embodiment, the pins 14
Is only two members, the rotating shaft 29 and the lever shaft 28, and is connected outside the head case 27, so that it is extremely easy.

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

After the rotation shaft 29 is mounted, the locking projections 44 on the outer peripheral surface thereof are locked to the guide 34, and the rotation range of the rotation shaft 29 is regulated. FIGS. 5A and 5B show a state in which the locking projection 44 of the rotating shaft 29 abuts the guide 34 at the limit position of each rotation range, and the rotation is restricted. It is. By providing the rotating shaft 29 and the guide 34 with the stopper function in this way, the components of the conventional stopper cylinder 17 shown in FIGS. 11 and 13 can be omitted.

Thereafter, with the head case 27 turned upside down, the disk cap 30
Is mounted, and a concave portion 52 of the same shape of the movable disk valve element 31 is externally fitted to the oval or elliptical convex portion 49 of the disk cap 30. Thereby, the disc cap 3
0 and the movable disk valve element 31 can operate integrally without any gap in any direction in the horizontal plane.

Then, the fixed disk valve 32 is placed on the movable disk valve 31, and the recess 64 having the same shape as the fixed disk valve 32 of the back cover 33 is formed in the fixed disk valve 3.
2 and the fixed disk valve 3 against the back cover 33.
Fix both so that 2 does not move.

Finally, the whole of the head case 27 assembled in this way is turned over so that the upper and lower sides return to the original state, and the faucet main body 1 is formed using a long screw in the same manner as in the conventional case. Should be fixed to.

The mode of use of the faucet of this embodiment is as follows.
As with the prior art, raised under <br/> Geto of handle lever 12, by the rotation operation, to control the discharge flow rate and the mixed water temperature. By raising or lowering the handle lever 12, the movable disc valve 31 which operates integrally with the disk cap 30 and which via the main operation unit 35 and the sub operation unit 36 of the lever shaft 28, and the water stop position of FIG. 1 It reciprocates between the position of the maximum discharge flow rate in FIG.

At this time, the main operating section 35 and the sub operating section 36 are joined to the disk cap 30 via an involute curved surface, and the joining surfaces change mutually, so that the wear locally progresses. However, it does not cause rattling. Further, by using the involute curved surface, even if there is a rotation operation about the pin 14 of the lever shaft 28 as a fulcrum, the disk cap 30 can be moved horizontally without prying up, and the valve body can be smoothly moved. Operation can be ensured. The same effect can be obtained even if the involute surface is a cycloid surface.

When the handle lever 12 is rotated, the slide grooves 43, 43 of the rotating shaft 29 and the ridges 46, 46 of the disk cap 30 are engaged with each other so that they are integrally rotated. Become. On the lower surface side of the disc cap 30, an oval or elliptical uneven portion 49,
Since the movable disk valve element 31 is mounted via the opening 52, the movable disk valve element 31 has an opening area ratio between the hot water port 55 of the fixed disk valve element 32 communicating with the mixing chamber 54 and the water port 56. Change the temperature of the mixed water.

In this case, the engagement between the rotating shaft 29 and the disk cap 30 is made by the slide grooves 43, 43.
And by the convex 46 and 46, it is possible to remove the gap in the rotational direction therebetween. Further, by fitting the disk cap 30 and the movable disk valve body 31 through an oval or elliptical uneven portion, it is possible to eliminate a gap between the two in the rotating direction. Therefore, in the faucet of this embodiment, it is possible to eliminate the play of the handle operation, and the operation feeling is good.

The present invention is not limited to the above-described embodiment. For example, the number of guides 34 formed on the inner peripheral surface of the head case 27 and the locking projections formed on the outer peripheral surface of the rotary shaft 29 The number and the like of the units 44 can be appropriately changed.

[0039]

As described above, in the present invention,
Since a guide for joining to the outer peripheral surface of the rotating shaft is provided in the axial direction from the lower end opening on the inner peripheral surface side of the head case, the rotating shaft can be mounted in the mounting hole of the head case using this guide, It is very simple, just push it along the guide.

Further, on the outer peripheral surface of the rotary shaft, there is provided a locking projection which locks with the guide of the head case and regulates the rotation range of the rotary shaft. Therefore, the conventional stopper cylinder can be omitted. In addition, this allows the lever shaft to be mounted on the rotating shaft in advance and can be mounted in the mounting hole of the head case, which not only simplifies the pin insertion operation, but also simplifies the assembling operation of the entire head portion. Automation is possible.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a head portion when a faucet according to the present invention is closed.

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

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 faucet according to the present invention, wherein FIG. 4A is a bottom view, and FIG.

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

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

FIG. 7 is an exploded side view partially showing a main part of a head part of the faucet according to the present invention.

8A and 8B show a movable disc valve body of a 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 faucet according to the present invention, wherein FIG. 9A is a plan view and FIG. 9B is a bottom view.

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

FIG. 11 is a longitudinal sectional side view showing the whole of a conventional single lever type faucet.

FIG. 12 is a partial cross-sectional front view showing the whole of a conventional single lever type faucet.

FIG. 13 is an exploded perspective view showing a head portion of a conventional single lever type faucet.

FIG. 14 is a bottom view showing a head portion of a conventional single lever type 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 33 ... Back cover 34 ... Guide 44 ... Locking protrusion

Continuation of the front page (72) Kuniaki Sakakibara, Kuniaki 5-1-1, Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (56) References JP-U 5-75567 (JP, U) (58) Fields surveyed (58) Int.Cl. ⁶ , DB name) F16K 11/00-11/24

Claims (2)

(57) [Claims] 1. A fixed disk valve element and a movable disk valve element are disposed at a lower side of a head case, and a rotation shaft for rotating the movable disk valve element is disposed at an upper side of the head case. By inserting a lever shaft for moving the movable disk valve body in the horizontal direction into the rotation shaft and operating the handle lever from the upper side of the head case, the movable disk valve body is fixed to the fixed disk via the lever shaft and the rotation shaft. In a single lever type water faucet which is moved relatively to a valve body and controls opening and closing of ports provided in these disc valve bodies, the outer peripheral surface of the rotary shaft is brought into contact with and guided on the inner peripheral surface side of the head case. Is the guide at the bottom opening of the head case?
Et-axis direction is provided, the single lever faucet, wherein said providing the locking protrusion for restricting the rotation range of the engagement locks the rotation shaft to guide the outer peripheral surface of the rotating shaft. 2. An R-face portion for guiding fitting into said mounting hole is formed on an upper end surface of the rotating shaft opposed to the rotating shaft mounting hole formed on the upper side of the head case. The single lever type faucet according to claim 1.