JP3176026B2 - Structure to prevent forgetting to tighten the hot water tank drain cock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing forgetting to tighten a hot water tank drain cock. More specifically, the present invention relates to a hot water tank drain cock in a flush toilet for a flush toilet that can securely close an open drain cock after draining water from the hot water tank and prevent forgetting to tighten the drain cock. For preventing forgetting to tighten.

[0002]

2. Description of the Related Art Conventionally, toilets have been improved in terms of convenience and hygiene, and a hot water washing apparatus having a local hot water washing function, a local drying function, and the like has been used as a toilet seat unit, for example. Has been provided by. In this hot water washing apparatus, tap water is stored and heated in a hot water tank in a fixed amount, and hot water is injected from an injection nozzle toward a human body in accordance with an external input from an operation switch.

[0003] Further, when not used due to a long absence, etc., the stored water can be discharged from the hot water tank so that the water stored in the hot water tank does not freeze or the like. As a structure for realizing drainage from such a hot water tank, the inventors of the present invention have proposed a water supply / drainage system as shown in FIG. 9, for example.

[0004] That is, in the hot water washing device, a water supply solenoid valve (1) is provided at a connection portion with a water supply, and a reserve tank (4) provided with a water supply port (2) and a waste water port (3) downstream thereof. , And a hot water tank (6) provided with a heater (5) are sequentially provided, and these are connected via a piping system. A water pump (7) is interposed in a piping system between the reserve tank (4) and the hot water tank (5) so that tap water stored in the reserve tank (4) is pumped and transferred to the hot water tank (6). I have to. Hot water tank (6)
Is further connected with a nozzle section (8) for injecting washing water toward the human body part.

[0005] A drain hole (9) is provided at the bottom of the hot water tank (6). One end of a drain pipe (10) is connected to the drain hole (9), and the other end is connected to the drain hole (9). It is connected to a drain cock (11) facing an arbitrary part leading to the toilet drain port. The drain cock (11) is normally closed and shuts off water. Then, when draining the stored water from the hot water tank (6), the water drain cock (11) is opened, and the water pump (7) is operated with the water supply solenoid valve (1) closed, and the reservoir is operated. The tap water stored in the tank (4) is pumped into the hot water tank (6). Thereafter, air is sucked from the waste water port (3) of the reserve tank (4), and is sent into the hot water tank (6) to increase the internal pressure thereof. The water stored in the hot water tank (6) is drained through the drain hole ( Water is drained from 9) through a drain pipe (10) and a drain cock (11). Thus, the stored water in the hot water tank (6) can be discharged to the toilet.

[0006]

For example, a hot water washing apparatus provided with a water supply / drainage system as described above comprises a hot water tank (6).
Regardless of the position of the hot water washing device, the stored water in the hot water tank (6) can be reliably drained, and the water can be drained from the hot water tank (6) regardless of the disposition position. There is an advantage that the restriction on the structure around the hot water tank (6) is eliminated, and even if the hot water tank (6) is completely covered with the casing, drainage can be performed without any problem.

However, in order to improve the operability of draining the hot water tank (6), it is necessary to further study. That is, when draining the hot water tank (6), the operator operates the drain cock (11) based on his / her intention and performs an act of opening the drain cock.
The act of closing the drain cock (11) after draining is less noticeable than opening it.
Generally, it tends to be easy to forget. This means that even before getting used to draining the hot water tank (6),
The same holds true after getting used to.

When the hot water washing device is normally operated with the drain cock (11) kept open, tap water sent from the reserve tank (4) to the hot water tank (6) is supplied to the hot water tank (6). All of the water is discharged from the drain cock (11) without accumulating. Tap water is wastefully consumed, and in this case, the toilet user cannot easily recognize that the washing water is not jetted clearly due to forgetting to tighten the drain cock (11). In some cases, it may be erroneously recognized that a failure or the like of the hot water cleaning device has occurred.

The present invention has been made in view of the above circumstances, and has solved the drawbacks of the conventional hot water washing apparatus for flush toilets with respect to the operation of draining the hot water tank.
Provided is a structure for preventing forgetting to tighten a hot water tank drain cock in a hot water washing device for a flush toilet, which can surely close an opened drain cock after draining water from a hot water tank and prevent forgetting to tighten the drain cock. It is intended to be.

[0010]

The present invention solves the above-mentioned problems by providing a drain hole at the bottom of a hot water tank provided with a heater and storing a fixed amount of washing water for washing a human body part. The drainage pipe is connected to one end of a drainage pipe connected to the drainage hole, and the other end is provided with a drainage cock facing an arbitrary portion communicating with a toilet drain port. Is disposed near the outer casing of the hot water washing device, and the outer casing facing the drain cock is provided with an openable and closable lid, and the drain cock is rotatable around a horizontal axis. The drain cock is closed when the operation lever is in the upright position. When the cock is tilted toward the lid, the drain cock is opened to allow drainage of the hot water tank. Ko In the open state of the lock, the operation lever portion is disposed at a position where the tip portion can contact the inner surface of the lid, and when closing the lid, the operation lever portion rotates with the inner surface of the lid, A structure for preventing forgetting to tighten a hot water tank water drain cock, wherein the water drain cock is closed upright.

Hereinafter, the structure for preventing forgetting to tighten the hot water tank drain cock of the present invention will be described in more detail with reference to the drawings.

[0012]

FIG. 1, FIG. 2 and FIG. 3 are a plan view, a left partial sectional view and a right sectional view, respectively, showing an embodiment of a structure for preventing forgetting to tighten a hot water tank drain cock according to the present invention. It is. In the embodiment shown in FIGS. 1, 2 and 3, the hot water washing device (21) is integrated with the flush toilet (22) and is built in the back of the toilet. The hot water washing device (21) has a water supply / drainage system similar to that shown as a conventional example in FIG.

That is, a water supply solenoid valve (23) is provided at a connection portion with the water supply, and a downstream side thereof is provided with a reserve tank having a water supply port and a waste water port and a hot water tank (24) having a heater in order. These are connected via a piping system. Reserve tank and hot water tank (24)
A water pump (25) is interposed in the piping system between the hot water tank (2) and the tap water stored in the reserve tank.
4). Hot water tank (24)
Is further connected to a nozzle section (26) for injecting washing water toward a human body part. This hot water tank (24)
Is installed at a position lower than the rim (27a) of the flush toilet (22).

A drain hole (28) is provided at the bottom of the hot water tank (24) so as to protrude downward. One end of a silicone hose (29) as a drain pipe is connected to the drain hole (28), and the other end is connected to a manually operable drain cock (30). The drain cock (30) is located near the outer casing (31) on the left side of the hot water washing device (21), and the rim (27).
The water supply port (32a) formed on the upper surface of the rim water supply connection part (27b) connected to a) is disposed immediately above the water supply port (32a). The water supply port (32a) is a part into which a water supply pipe (32b) provided as a water path for supplying washing water used for discharging waste and the like to the flush toilet (22) is inserted.
b) is branched from the water supply / drainage system of the hot water washing device (21), and is directly connected to the water supply. Drain cock (30)
The outer casing (31) is provided with a lid (34) that can be freely opened and closed.

The drain cock (30) has a horizontal rotating shaft, and has an operation lever (33) rotatable around the rotating shaft. Drain cock (30)
Is closed and water-stopped in a state where the operation lever (33) is upright, and is opened when tilted toward the lid (34). Drain cock (30)
Is normally closed, but when draining the stored water from the hot water tank (24), the lid (34) is opened, and the operating lever (33) of the drain cock (30) is closed with the lid (34). Tilt to the side and open. In this state, when a drain switch provided on the remote controller, the flush toilet (22) body, or the like is operated, only the water pump (25) is operated with the water supply solenoid valve (23) closed, Tap water in the reserve tank is drawn out and transferred to the hot water tank (24). After the reserve tank is emptied, air is sucked from the waste water port and sent to the hot water tank (24) in the same manner. Then, the internal pressure of the hot water tank (24) increases, and accordingly, the stored water flows from the drain hole (28) at the bottom to the water supply port (32a) through the silicon hose (29) and the drain cock (30). It is led. Then, the water is sent to the rim (27a) through the rim water supply connection portion (27b), and is flushed from a flush water injection hole formed at the bottom thereof.
It is discharged to the bowl (35) of 2).

After a certain period of time, the water pump (2)
The operation of 5) is stopped, and the drainage of the hot water tank (24) is completed. Therefore, no matter where the hot water tank (24) is placed in the hot water washing device (21), the hot water tank (2)
4) The stored water inside can be drained reliably, and the hot water tank (24) can be drained regardless of the arrangement position. Even when the hot water tank (24) is installed at a lower position of the hot water washing device (21), the water can be drained without any trouble.

In addition, the restriction on the structure around the hot water tank (24) is eliminated, space can be saved, and a compact hot water washing device (21) can be realized. Furthermore, even if the hot water tank (24) is completely covered by the outer casing (31), drainage can be performed without any problem. FIGS. 4, 5, and 6 are an enlarged perspective view and a cross-sectional view, respectively, showing the periphery of the drain cock.

An operation lever (33) provided on the water drain cock (30) is disposed inside a sub-switch box (36) of the hot water washing device (21), for example, a temperature adjusting portion of the washing water. I have. The above-mentioned lid (34) also serves as a lid for opening and closing the sub-switch box (36). The lower end is used as the center of rotation, and the sub-switch box (36) is opened and closed by turning. I have to.
On the other hand, the main body of the drain cock (30) is fixed to the outside of the sub switch box (36) by screws.

The sub switch box (36) is provided with an operation knob (36a) for adjusting the temperature of the washing water at the upper part. A space (36b) is formed on the lower side, and the operation lever (3) of the drain cock (30) is formed here.
3) is provided so as to protrude from the inner wall surface of the sub switch box (36). Sub switch box (36)
Is generally disposed in front of the hot water washing device (21), and for this reason, the operating lever portion (33) of the drain cock (30) provided in the lower space (36b) thereof.
Are arranged in a part that is easy to see from the standing position of the toilet user, so that the visibility is excellent and the operability is also good.

The cover (34) is normally closed, so that the operation lever (33) is not exposed to the outside, is concealed, and does not impair the appearance. Appearance is well maintained. Also, an operation lever (33)
Is a lid (34) for draining the hot water tank (24).
When it is tilted to the side, its tip is arranged at a position where it can contact the inner surface of the lid (34). This prevents forgetting to tighten the drain cock (30) after draining.

More specifically, as shown in the cross-sectional views of the main steps in FIGS. 7A, 7B, and 7C, when the hot water tank (24) is drained, the operation lever (33) is closed with a lid. It is tilted toward the body (34), and its tip is connected to the sub-switch box (3).
6) Project outside. In this state, the distal end of the operation lever (33) can come into contact with the inner surface of the lid (34). When the lid (34) is rotated to close,
At a certain rotation angle, the inner surface of the lid (34) comes into contact with the tip of the operation lever (33). When the lid (34) is further rotated from this state, the distal end of the operation lever (33) is attached to the inner surface of the lid (34) and enters the lower space (36b) of the sub switch box (36). It turns toward.

For this reason, the water drain cock (30) does not perform the act of closing the lid (34) disposed near the operation lever portion (33) at the same time as the operation of closing the cover without performing the act of tightening. The extraction cock (30) is tightened. As described above, since the lid body (34) is disposed at a position where the toilet user can easily see the lid body, it is easy to check the open state of the lid body (34). 30) can be reliably prevented from being closed. After draining the hot water tank (24), the drain cock (30) is securely tightened and closed.

The position of the operation lever (33) of the drain cock (30) is not limited to the inside of the sub switch box (36) shown above. In the vicinity of the outer casing (31) of the hot water washing device (21), any position can be set as long as the cover (34) can be installed. As shown in FIG. 4, a space (36b) in which the operation lever portion (33) is disposed is provided in a deodorizing duct of a deodorizing device attached to the hot water washing device (21) or the flush toilet (22). Can be used as part of In this case, a deodorizing cassette (37) of a deodorizing device can be stored in the space (36b). Deodorant cassette (3
7) deodorizes the odor emitted from the waste discharged with use of the toilet, and has a built-in deodorant (38a). For this reason, when the deodorizing ability is reduced or lost, it is necessary to inspect or replace it with a new one, and it is preferable that the deodorizing cassette (37) can be taken out from the deodorizing duct. The outer casing (31) near the operation lever (33) of the drain cock (30) is provided with a lid (34) that can be opened and closed freely. This is effective in device design, manufacturing cost, operability, and the like. The deodorizing cassette (37) can be stored in a space (36b) on the back side of the operation lever (33) of the drain cock (30).

As shown in FIG. 8, the deodorizing cassette (37) has a mesh-shaped vent (38b) formed on the bottom surface thereof so as to communicate with the deodorizing duct. Also, on the front,
A handle (39) is provided to facilitate removal of the deodorant cassette (37) during inspection, replacement, and the like. In the deodorizing apparatus having such a deodorizing cassette (37), the bowl (3) of the flush toilet (22) is operated during the deodorizing operation.
The air in the bowl (35) is sucked in from the odor suction port facing 5), and the deodorant cassette (3) is drawn in from the ventilation port (38b).
7) Pass inside. At this time, the odor in the air is removed by the deodorant (38a).

In inspection, replacement, etc., the deodorant cassette (3
When taking out 7), the cover (34) is opened, the operating lever (33) is tilted toward the cover (34), and then the finger is put on the handle (39) and pulled out. In some cases, the tilting of the operation lever part (33) is not performed independently, and when the deodorizing cassette (37) is pulled out, the deodorizing cassette (3) is not pulled out.
It is also possible to make the front surface of 7) abut on the operation lever portion (33) and tilt it toward the lid (34) with the drawer.

When the deodorizing cassette (37) is stored, the operation lever (33) is already tilted toward the lid (34), so that there is no problem in inserting the deodorizing cassette (37).
The space (36
b). After this, the lid (34)
When the is closed, the operation lever portion (33) can be set in the upright state in exactly the same manner as the above-described operation after the end of drainage.

That is, with the rotation of the lid (34), the operation lever (33) rotates toward the space (36b),
Close the drain cock (30). Deodorant cassette (37)
Is provided in the same space (36b) as the operation lever portion (33), there is no possibility of forgetting to tighten the drain cock (30) due to inspection, replacement, and the like. Lid (3
4) When the drain cock is closed,
0) is securely closed.

Of course, the present invention is not limited by the above examples. It goes without saying that various aspects are possible for the detailed structure of the warm water washing device and the flush toilet.

[0029]

As described in detail above, according to the present invention, in the operation of draining the hot water tank in the hot water washing apparatus for flush toilets, the act of closing the drain cock is unnecessary, and the outer casing provided near the operation lever portion is not required. In the act of closing the lid, the operation lever portion rotates along with the inner surface of the lid, and can close the drain cock. The open / closed state of the drain cock is confirmed by the open / closed state of the lid, and since the open state of the lid is easily visible, forgetting to tighten the drain cock after draining the hot water tank is reliably prevented.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a structure for preventing forgetting to tighten a hot water tank drain cock according to the present invention.

FIG. 2 is a left partial sectional view of the example of FIG. 1;

FIG. 3 is a right sectional view of the example of FIG. 1;

FIG. 4 is an enlarged perspective view showing the periphery of a drain cock.

FIG. 5 is an enlarged perspective view showing the periphery of a drain cock.

FIG. 6 is an enlarged sectional view showing the periphery of a drain cock.

FIGS. 7A to 7C are cross-sectional views of a main part of a process, each showing a state when a lid is closed.

FIG. 8 is a perspective view showing a deodorizing cassette.

FIG. 9 is a block diagram illustrating a water supply / drainage system of the hot water cleaning device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water supply solenoid valve 2 Water supply port 3 Waste water port 4 Reserve tank 5 Heater 6 Hot water tank 7 Water pump 8 Nozzle part 9 Drain hole 10 Drain tube 11 Drain cock 21 Hot water washing device 22 Washing toilet 23 Water supply solenoid valve 24 Hot water Tank 25 Water pump 26 Nozzle part 27a Rim 27b Rim water supply connection part 28 Drainage hole 29 Silicon hose 30 Water drainage cock 31 Outer casing 32a Water supply port 32b Water supply pipe 33 Operation lever part 34 Lid 35 Bowl 36 Sub switch box 36a Operation Knob 36b Lower space 37 Deodorant cassette 38a Deodorant 38b Vent 39 Handle

──────────────────────────────────────────────────続 き Continuing on the front page (72) Yoshihiro Nishizaki, Investigator, Kazuma, Kazuma, Osaka 1048, Matsushita Electric Works, Ltd. 72) Inventor Hirotoshi Nagaoka 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Works, Ltd. (56) References JP-A-9-84861 (JP, A) JP-A-9-60085 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) E03D 9/08

Claims (3)

(57) [Claims] 1. A drain hole is provided at a bottom portion of a hot water tank provided with a heater and storing a predetermined amount of washing water for washing a local part of a human body, and one end of a drain tube is connected to the drain hole, The other end is provided with a drain cock that faces an arbitrary part that communicates with the toilet drain port.In a hot water washing device with a toilet bowl, the drain cock is arranged near the outer casing of the hot water washing device, and the drain cock is The facing outer casing is provided with a lid that can be opened and closed, and the drain cock has an operation lever portion that is rotatable around a horizontal axis, and the drain cock is in a state where the operation lever portion stands up. Is closed, and the water drain cock is opened when it is tilted to the lid side, and water can be drained from the hot water tank. Inside A structure for preventing forgetting to tighten the hot water tank drain cock, characterized in that it is arranged at a position where it can come into contact with, and when the lid is closed, it rotates together with the inner surface of the lid, stands up and the drain cock is closed . 2. The hot-water tank water according to claim 1, wherein an operation lever portion of the drain cock is disposed in a sub-switch box having a lid that can be opened and closed, which is disposed near an outer casing of the hot-water washing device. Structure to prevent forgetting to pull out cock. 3. A hot water tank is connected on the upstream side to a reserve tank connected to a water supply solenoid valve provided as a connection part with a water supply, and a water pump is interposed in a water passage between the hot water tank and the reserve tank. The structure for preventing forgetting to tighten the hot water tank drainage cock according to claim 1 or 2, wherein a nozzle portion for injecting the washing water toward the human body part is connected to the downstream side.