JP3310575B2 - Single lever 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 faucet, and more particularly, to a state in which a handle is moved in one direction to discharge only hot water and a case in which the handle is moved in the other direction so that only water is discharged. The present invention relates to a single-lever faucet having one switching lever configured to be capable of switching to a state in which water is discharged.

[0002]

2. Description of the Related Art Conventionally, as a single-lever faucet of this type, the raw water passed through a raw water inlet of an undersink type water purifier provided in a home sink or the like is purified to purify the water. A state in which purified water is spouted through the outlet of the vessel, and a reverse cleaning in which the cleaning cartridge is washed with raw water passed through the outlet and impurities adhering to the purification cartridge are spouted together with the hot water through the raw water inlet. Although there is a switch having a switching lever configured to be able to switch between a state and a water stop state in which the flow path of the raw water and raw water to the water purifier is shut off, the handle is moved upward from the purified water discharge state. When the water is shut off, the handle frequently moves further upward past the water stop, causing a backwashing condition, which may cause burns. There was.

[0003] The present invention provides a single lever faucet that can prevent accidental switching from the purified water spouting state to the water stoppage state to the reverse cleaning state after passing the water stoppage state. Aim.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a state where a handle is moved in one direction to discharge only hot water and a state where a handle is moved in the other direction to discharge only water from a water stop state. A cover body of a faucet main body having a stepped portion on an upper surface side in a single lever faucet having one switching lever configured to be switchable.
And a pair of rising portions provided on the uppermost surface of the cover body
Material and the vertical groove formed in this rising member from above
Having a pair of detents on the inside of the peripheral wall so that it fits loosely
Both annular flanges facing outward at the lower end of the peripheral wall
A plurality of saws having an upper end portion continuous with the peripheral wall.
Switching ring having tooth shape and before this switching ring
The cover is interposed between the annular flange and the step of the cover body.
And the saw-tooth wall of the switching ring for temporarily stopping the movement of the handle in the stopped state when the state is switched from the state of discharging water to the state of stopping water.
Stopper part that fits externally so as to be rotatable from above
The stopper to release the timber, the stop manually
A release lever for rotating the member, and
When the stopper member is in a water stopped state, the movement of the handle is stopped.
While restricting the valve stem to the position where the
After the stop of the handle is released by rotating the bar
The valve which can rotate the valve rod to the position where the hot water is discharged
It has a rod rotation regulating hole and the rotation operation of the release lever.
In slide the upper inclined surface of the respective sawtooth wall of the switching ring
It has a rib to guide .

[0005]

Therefore, when the state is switched from the state in which water is discharged to the state in which water is stopped, the movement of the handle can be temporarily stopped by the stopper means in the state in which water is stopped, so that danger such as burns can be prevented. By manually rotating a release lever provided separately from one switching lever, it is possible to switch to a state of discharging hot water after releasing the stop.

[0007]

Embodiments of the present invention will be described below. Note that the present invention is not limited thereby. FIGS. 1 to 5 are each configured to be freely switchable from a water stop state to a state in which the handle is moved upward to discharge only hot water and a state in which the handle is moved downward to discharge only water. One embodiment of the present invention is shown in which a switching mechanism for switching between three states of purified water, backwashing, and still water by operating two switching levers is provided with a stopper means and a release lever.

In FIG. 1 to FIG. 5, reference numeral 1 denotes an undersink type water purifier provided in a home sink or the like for removing microorganisms such as bacteria and mold which cause turbidity, and substances such as red rust and mud. And a purifying cartridge (not shown) filled with a filter and activated carbon for removing residual chlorine. 2 is a hot-water mixer tap attached to a mounting base 3 such as a home sink.
A water supply passage 9 and a raw water removal passage 11 are provided, branching from a water supply passage 5 communicating with a water supply pipe (not shown) and a hot water supply passage 7 communicating with a hot water supply tube (not shown), respectively. . The hot and cold water mixing tap 2 is connected to the water C
And the hot water H in the hot water supply passage 7 are mixed at an appropriate ratio by switching a valve mechanism (not shown) provided on the hot and cold water mixing tap main body 2a and a lever 12 having a flow rate adjusting function and a water discharging / water stopping function. The mixed water can be discharged from the hot and cold water tap 13. In FIG. 1, 14a, 14b
Is a water stopcock for opening and closing the water supply channel 5 and the raw water extraction channel 9;
14 c and 14 b are water stopcocks for opening and closing the hot water supply path 7 and the raw water removal flow path 11.

Reference numeral 15 denotes a single lever faucet provided between the raw water take-out passage 9 and the raw hot water take-out passage 11 and the water purifier 1, and is used for switching one switching lever 17 provided on the faucet main body 16. The one movable disk 19 slides in the direction indicated by the arrow A with respect to the one fixed disk 18 fixedly disposed in the faucet body 16 in conjunction with the raw water take-out flow path 9, thereby causing the water purifier 1 to A purified water state in which the raw water inlet 20 communicates with the purified water flow path K that passes through the outlet 21 of the water purifier 1 to the water passage hole d of the fixed disk 18, and a reverse cleaning state in which the raw water take-out flow path 11 communicates with the purified water flow path K. Then, the state is switched to a water-stop state in which the raw water extraction flow path 9 and the raw water extraction flow path 11 are prevented from communicating with the purified water flow path.

First, the water purification state, the reverse cleaning state, and the water stop state will be described in detail. The fixed disk 18 has four water holes a, b, c, and d, while the movable disk 19 has a long groove 23 at a central position on the lower surface, which is large enough to communicate with the two water holes simultaneously. Have. This long groove 23
It is slidably mounted on the fixed disk 18 so that its longitudinal direction is parallel to the direction perpendicular to the sliding direction indicated by the arrow A, and the water passage a communicates with the raw water take-out channel 9 while the water passage c Is in communication with the raw water take-out channel 11.

In the water purifying state, when the handle 17a is moved downward from the water blocking state, the long groove 23 is formed to flow the raw water C from the water hole a to the water hole b.
The movable disk 19 is positioned so as to cover the upper surface 18a (see FIG. 5A). That is, the raw water C passing through the water passage hole b reaches the raw water inlet 20 in the water purifier 1 through the raw water flow path 22, and purified water 30 purified by the water purifier 1 passes through the purified water flow path K from the outlet 21. It reaches the water passage hole d of the fixed disk 18. This water passage hole d communicates with the purified water spouting channel 31 in the faucet 29, and the purified water 30
It is spouted from. The raw water take-out passage 11 communicating with the water passage hole c is blocked by a raw water take-out passage blocking portion S on the lower surface 19a of the movable disk.

When the handle 17a is moved upward from the water-stopped state after the release lever 50 described later is manually rotated in the water-stopped state in the back-washing state, the raw water H is provided with a water hole. long groove 2 to flow from c to the water hole d
The movable disk 19 is positioned so that the cover 3 covers the water holes c and d from the upper surface 18a side (see FIG. 5C).
The raw water H that has passed through the water purifier K flows toward the outlet 21 of the water purifier 1, enters the water purifier 1 from the outlet 21, and cleans the purification cartridge with the raw water H while flowing to the inlet 20 in the water purifier 1. I do. After that, the impurities adhering to the cleaning cartridge pass through the raw water flow path 22 together with the hot water to reach the water holes b of the fixed disk 18. The water hole b communicates with the other impurity water discharge channel 28 branched from the faucet 29, and hot water containing impurities is discharged from the faucet 29. It should be noted that the raw water extraction flow passage 9 communicating with the water passage hole a
Is blocked by a raw water taking-out channel blocking portion P on the lower surface 19a of the movable disk.

The long groove 23 has four water holes a, b,
The movable disk 1 is positioned so as not to overlap c and d.
When the slide 9 is slid, a water stop state (see FIG. 5B) is established.

As described above, the handle 17a is switched to the lower, middle, and upper positions by operating one switching lever 17 between the three states of water purification, back washing, and water stoppage. For example, reference numeral 35 denotes a valve stem, and a protrusion 37 provided at a central portion of the upper surface of the movable disk 19 engages with a recess 37 formed at the center of the lower surface 36a of the slide body 36 fixed to the lower end of the valve stem 35. Thus, the valve rod 35 rotates in response to the switching operation of the switching lever 17, and the movable disk 19 slides in the sliding direction (A direction) due to the sliding of the slide body 36.
When the water is stopped, the valve stem 35 is vertically positioned as shown by the one-dot chain line in FIG. 4A and the two-dot chain line in FIG. 5B and FIG.
2 (A), the solid line in FIG. 5 (A) and FIG.
As shown by the solid line in FIG. 5, the position is inclined leftward in the direction A, and in the reverse washing state, the two-dot chain line in FIG.
As shown by the solid line in (C), it is inclined rightward in the direction A.

Next, a description will be given of the stopper means and the release lever, which are characteristic features of the present invention. 40 is
The cover body of the faucet main body 16 has an upper step portion 41 and a lower step portion 42 on the upper surface side, and a pair of rising members 43, 43 is provided on the uppermost surface m of the cover body 40. The rising member 43 has a vertical groove 43a.

Reference numeral 44 denotes a switching ring, which is a pair of detents 45, 45 which are loosely fitted into the vertical grooves 43a from above.
And an annular flange 46 extending outward at the lower end of the peripheral wall W. Further, the peripheral wall W
Is formed in a plurality of sawtooth shapes whose upper end is continuous. In this embodiment, three sawtooth walls 47, 47,
47.

A coil spring 48 is interposed between the annular flange 46 of the switching ring 44 and the upper step 41 of the cover body 40.

Reference numerals 49 and 50 denote a stopper member externally fitted to the switching ring 44 from above and a release lever for rotating the stopper member 49, respectively.

First, a stopper member 49 includes an outer fitting member 51 and an annular lower flange 52 which are fitted to the sawtooth walls 47, 47, 47 of the switching ring 44 so as to be rotatable in the vertical direction, and both of them 51 , 52 and a plurality of ribs 53 connecting the valve stem 3 formed on the upper surface of the outer fitting member 51.
5 has a valve stem rotation restricting hole 54 through which the outer fitting member 5 extends.
1 has a plurality of claws a and grooves b formed over the entire periphery of the upper end edge. The three saw tooth walls 47, 4
The three ribs 53 are also formed in correspondence with 7, 47, and slide on the upper end inclined surface n of each saw tooth wall 47.
Further, the valve shaft rotation regulating hole 54 has a substantially L-shape in plan view.

The valve stem 35 is provided with a valve stem rotation regulating hole 54.
On the other hand, in the water purification state, it is located in the state shown by the solid line in FIG. 5A, and in the water stop state, it is located in the state shown by the one-dot chain line in FIG. Sometimes, at the position of the valve stem rotation regulating hole 54 in FIG. 5A, the movement of the valve stem 35 in the water stopped state is prevented by the valve stem rotation regulating hole 54, so that the release lever 50 is manually operated as shown in FIG. 5) so that the valve stem 35 can be moved by rotating in the direction indicated by the arrow R in FIG.
After displacing 4 to the state shown by the dotted line, the handle 17a can be moved upward from the water stop state for the first time.

The release lever 50 has an opening 50 of a size that allows the outer fitting member 51 of the stopper member 49 to be fitted.
a, a lever portion 72 formed on a lower side wall of the lever body 71, a locking portion k for locking a claw of the outer fitting member 51, and a groove b of the outer fitting member 51. And a locking piece r.

Reference numeral 70 denotes an outer cover for fixing the release lever 50 together with the switching lever 17 to the faucet main body 16.

When the switching lever 17 is switched from the purified water state to the water stopped state, as shown in FIG.
The valve stem 35 moves to the right side in the direction A in the range of the first regulating portion 54a of the valve stem rotation regulating hole 54. That is, in FIG. 5 (A), when the valve rod 35 is moved from the position shown by the solid line to the position shown by the one-dot chain line to switch from the state of discharging water to the water stop state, the handle 17a is stopped in the water stopped state. Since the movement can be temporarily stopped, when switching the switching lever from the water discharge state to the water stop state,
Unexpected switching to the backwashing state after passing the water stop state is prevented, and the danger such as burns can be prevented. At this time, as shown in FIG. 4A, the rotation preventing portion 45 of the switching ring 44 keeps the coil spring 48 in a substantially open state.
The rib 53 is locked at the lowermost position of the upper end inclined surface n of each sawtooth wall 47 while being located at the upper part of the vertical groove 43 a of the cover body 40.

Subsequently, the stopper member 49 is manually operated.
Is rotated together with the release lever 50, the rotation operation of the release lever 50 causes the second restricting portion 54b of the valve shaft rotation restricting hole 54 to be positioned along the direction A as shown in FIG. The stop is released. Then, when the state is switched from the water stopping state to the back washing state, the valve rod 35 in the water stopping state is moved to the second regulating portion 5 as shown in FIG.
4b in the direction A to the right in the figure and
It fits into the restriction part 54b. That is, in FIG. 5C, when the valve stem 35 is moved from the position shown by the dashed line to the position shown by the solid line, as shown in FIG.
Since the release lever 50 and the stopper member 49 are fixed in place by the outer cover 70 by sliding the upper inclined surface n of each sawtooth wall 47 upward, the rotation preventing portion 45 of the switching ring 44 is contracted. Coil spring 4
8 in the state of being urged by the vertical groove 43a of the cover body 40.
And is locked at the uppermost position by the fitting of the valve rod 35 despite the urging force of the coil spring 48.

Thereafter, when the switching lever 17 is depressed, the valve stem 35 moves from the state shown by the solid line in FIG. 5C to the left side in the direction A in the range of the second restricting portion 54b in FIG. 5C. 5A, the fitting of the valve rod 35 into the second restricting portion 54b is released, and the release lever 50 is moved by the urging force of the coil spring 48 to the position shown in FIG. Automatically return to. At this time, the uppermost rib 53 slides down the upper end inclined surface n of each saw tooth wall 47 and is locked at the lowermost position.

The shape of the valve rod rotation restricting hole 54 provided in the stopper member 49 is such that when the water is switched from the state of discharging water to the state of stopping water, the movement of the handle is temporarily stopped in the state of stopping water. The shape is not limited to a substantially L-shape.

Further, from the water stopping state, a state in which the handle is moved downward to discharge only hot water and a state in which the handle is moved upward to discharge only water may be set.

Further, according to the present invention, when the state is switched from the water discharging state to the water stopping state, the stopper means for temporarily stopping the movement of the handle in the water stopped state is provided.
Water can be stopped with a certain amount of water discharge, which has a water saving effect.

[0029]

As described above, when the state is switched from the state of discharging water to the state of stopping water, the movement of the handle can be temporarily stopped by the stopper means in the state of stopping water. While the danger can be prevented, it is possible to switch to a state in which hot water is discharged after releasing the stop by a manual rotation operation of a release lever provided separately from one switching lever.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining the overall operation of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a configuration in the embodiment.

FIG. 3 is an exploded perspective view of a main part in the embodiment.

FIG. 4 is a diagram for explaining an overall operation in the embodiment.

FIG. 5 is a diagram for explaining an operation of a main part in the embodiment.

[Explanation of symbols]

15: single lever faucet, 16: faucet body, 17: off
Replacement lever, 17a Handle, 35 Valve stem, 40 Cover body, 41 Step, 43 Standing member, 43a
... vertical groove, 44 ... switching ring, 45 ... detent part, 46
... annular flange, 47 ... saw tooth wall, 48 ... coil spring, 49 ... stopper member, 50 ... release lever, 53 ...
Rib, 54: valve stem rotation regulating hole, 70: outer cover.

Claims (1)

(57) [Claims] The present invention is configured to be able to switch from a water stop state to a state in which the handle is moved in one direction to discharge only hot water and a state in which the handle is moved in the other direction to discharge only water. In a single lever faucet having two switching levers, a cover body of a faucet main body having a stepped portion on an upper surface side, a pair of rising members provided on the uppermost surface of the cover body, and a vertical formed on the rising member. A plurality of saw teeth having a pair of detents on the inner side of the peripheral wall so as to be loosely fitted in the groove from the upper side, and having an annular flange directed outward at a lower end of the peripheral wall, and further having an upper end portion of the peripheral wall continuous. A switching ring having a shape, a coil spring interposed between the annular flange of the switching ring and a step portion of the cover body, and a state in which water is discharged. When switching to the water stopped state, a stopper member which is fitted to the saw tooth wall of the switching ring so as to be rotatable from above so as to temporarily stop the movement of the handle in the water stopped state, and A release lever for rotating the stopper member so as to release the stop, and further, the stopper member regulates the valve stem to a position where the movement of the handle is temporarily stopped when the water is stopped, and After the stop of the handle is released by the rotation operation, the valve has a valve rod rotation restricting hole that can rotate the valve rod at a position where the hot water is spouted, and the rotation of the release lever allows the rotation of the switching ring to open the respective saw tooth walls of the switching ring. A single lever faucet having a rib that slides on an upper inclined surface.