JPH0711684A - Toilet bowl flushing device - Google Patents

Abstract

PURPOSE:To make smooth a return motion of a shaft member and prevent flushing water from flowing uselessly by separating the center of gravity of a slush handle from a rotary axis of the shaft member. CONSTITUTION:Preliminarily, an electromagnetic actuator 8 is fixedly housed in a case of a flush handle 5. At the same time, the position of the electromagnetic lever 8 is properly selected, thereby placing the center of gravity of the the flush handle 5 in a spot separated from a rotary axis D of a shaft member 4. In the case of automatic mode, the electromagnetic actuator 8 is operated by a signal, say, a signal transmitted from an outside switch, such as a bowl seating sensor. On the other hand, in the case of manual mode, the flush handle 5 is turned, thereby rotating the shaft member 4. Since moment acts around the rotary axis D, it is possible for the shaft member 4 to make a return motion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet flushing device for flushing a toilet bowl by rotating a shaft member for driving a drain valve opening / closing means of a water tank by manual or automatic selective operation.

[0002]

2. Description of the Related Art Generally, a water washing lever provided in a water tank rotates a shaft member penetrating a side wall of the water tank, and a chain and a chain connected to an end of the shaft member on the water tank side. The drain valve opening / closing means including a valve element is operated. Since such a flush lever is always operated after the toilet is used, it gives a feeling of complication to the user and a plurality of people's hands touch it. Therefore, the motor driven by the electric signal from the external switch,
Various types of automatic toilet flushing devices that rotate a shaft member with an electromagnetic actuator such as a rotary solenoid have been proposed.

By the way, even in the toilet flushing device,
It is necessary to be able to operate it manually. For this reason, in Japanese Patent Laid-Open No. 60-55136, two shaft members are arranged side by side, for example, coaxially in a through hole formed in a side wall of a water tank.
It is described that the inner shaft member is engaged with the movable shaft portion of the electromagnetic actuator, and the outer shaft member is engaged with a manual water washing lever. JP-A-59-102027 discloses one shaft. There is described a configuration in which the movable shaft portion of the electromagnetic actuator engaged with the member is a double shaft type projecting to the opposite side, and a manual water washing lever is attached to the projecting portion.

[0004]

However, in the one using the above-mentioned two shaft members, the shaft member engaged with the water-washing lever, when rotating, has the actuator case engaged in the through hole and the inner side. Since there is sliding contact with both the shaft member and the shaft member, there is a problem that after the shaft member rotates in the valve opening direction, the return rotation of the shaft member in the valve closing direction is poor. In other words, the general usage of the flush lever is that a person usually separates his / her hand from the flush lever when a turning operation is performed, and when the shaft member is returned and rotated, the valve body is mainly washed. It is subject to the force of pulling the chain when it is pushed down by the drop in the water level. At this time, if there are many sliding parts of the shaft member,
The frictional force increases, and the shaft member returns and does not rotate even when the valve body pulls the chain. This is because it is easy to make an operation error that the washing water is wasted when the washing lever is stopped halfway.

The above problem also applies to the case where one shaft member is used. In this case, it is considered that the gravity of the electromagnetic actuator acts as a load on one end of the shaft member that is used in combination with the manual operation, which affects the rotatability thereof. In order to improve the return rotation of the shaft member, it is possible to solve the problem by providing a return spring, but the number of parts increases and the structure becomes complicated.

The present invention has been made in view of the above-mentioned problems, and in the one in which the shaft members are respectively driven by the manual washing lever and the automatic electromagnetic actuator, the return rotation of the washing lever is set to the return spring. The problem to be solved is to reduce the number of operation mistakes in which washing water is wasted.

[0007]

According to the present invention, a through hole formed in a side wall of a water tank is rotatably inserted and held, and a drain valve opening / closing means is connected to one end extending into the water tank. A shaft member, an electromagnetic actuator mechanism for driving the shaft member, and a case-shaped washing lever in which the electromagnetic actuator mechanism is housed and fixed, and the center of gravity of the washing lever is
It is separated from the rotation axis of the shaft member by the electromagnetic actuator mechanism.

[0008]

In the toilet bowl flushing device of the present invention, the shaft member and the electromagnetic actuator mechanism are directly engaged with each other, and the shaft member is automatically rotated by being operated by a signal from an external switch such as a seating sensor. Can be made. Further, since the flush lever stores and fixes the electromagnetic actuator mechanism and is engaged with the shaft member, the shaft member can be manually rotated by manually rotating the flush lever.

On the other hand, the electromagnetic actuator mechanism housed and fixed in the flush lever can freely select its position in the flush lever as long as it is engaged with the shaft member. Therefore, by selecting the position of the electromagnetic actuator mechanism, the position of the center of gravity of the water washing lever can be set at a position separated from the rotation axis of the shaft member. Therefore, when the shaft member returns and rotates after the water washing lever is manually turned, the gravity of the water cleaning lever and the electromagnetic actuator mechanism acts as a moment that assists the return rotation of the shaft member around the rotation axis, The returnability of the shaft member becomes good.

[0010]

As described above, according to the present invention, the manual washing lever and the automatic electromagnetic actuator mechanism are engaged with the shaft member for driving the drain valve opening / closing means in the water tank and can be driven. In the toilet flushing device, the center of gravity of the flushing lever is separated from the axis of rotation of the shaft member by the electromagnetic actuator mechanism so that the flushing lever and the electromagnetic actuator are rotated when the shaft member returns and pivots after manually pivoting the flushing lever. The gravity of the mechanism acts as a moment that assists the return rotation of the shaft member about its rotation axis, and the rotatability of the return of the shaft member is improved without using a return spring, and the washing water is wasted. It has the effect of preventing mistakes.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The toilet flushing device of the present invention will be described in detail below with reference to the embodiments shown in the drawings. In FIG. 1, reference numeral 1 denotes a side wall of a water tank, and the toilet flushing device is mounted as follows by utilizing a through hole 2 formed in the side wall 1 in advance. That is, the toilet flushing device has a bracket 3 having a flange portion 3a on the outside of the water tank and a bolt portion 3b protruding from the flange portion 3a and inserted into the through hole 2, and a central shaft hole of the bracket 3. A shaft member 4 that is rotatably inserted and held, and has one end in the water tank connected to the drain valve opening / closing means A, and a shaft member 4 that is on the other end of the shaft member 4 on the outer side of the water tank. The case-shaped water washing lever 5 that is engaged) and the gear 6 coaxially attached to the other end portion of the shaft member 4 extending in the water washing lever 5.
A worm 7 meshed with the gear 6 at a right angle, a movable shaft portion connected to the worm 7, and a DC type motor, a rotary solenoid or the like for driving the shaft member 4 via the worm 7 and the gear 6. It is composed of an electromagnetic actuator 8 and a nut 9 which is fastened to the bolt portion 3b of the bracket 3 to fix the bracket 3 to the side wall 1.

Specifically, the flush lever 5 has a bottomed case-shaped main body 5a capable of accommodating the gears 6, 7 on one side and an electromagnetic actuator 8 on the other side, and an opening of the main body 5a. And a lid portion 5b for closing the same by adhesion or the like. A boss 5c projects from the bottom surface of the main body 5a, and the other end of the shaft member 4 holding the gear 6 by adhesion or the like is screwed to the boss 5c.

Further, the lid portion 5b of the water washing lever 5 has a structure shown in FIG.
As shown in FIG. 3, the shaft hole 10 corresponding to the central shaft hole of the bracket 3 is formed, and the flange portion 3 of the bracket 3 is formed.
A bank portion 5d engaged with a is formed in a semicircular shape centering on the shaft hole 10. The bank portion 5d serves as a guide for preventing the shaft member 4 from being pulled out from the bracket 3 and for smoothly turning the water washing lever 5 in the manual mode. In addition, between the flange portion 3a and the lid portion 5b, there is a frictional force enough to overcome the turning force acting on the water washing lever 5 by the operation of the electromagnetic actuator 8. However, this frictional force is not always necessary. This becomes clear in the description of the automatic mode.

Further, the lid portion 5b of the washing lever 5 has approximately 9
An arcuate groove 11 having a 0 ° angle is formed. A stopper 3c protruding from the flange portion 3a of the bracket 3 is engaged with the arc-shaped groove 11. Here, the stopper 3c is located at one end of the arcuate groove 11 in the normal state (initial position). An AC adapter cord (not shown) is connected to the toilet flushing device, and wiring to an external switch for instructing the energization of the electromagnetic actuator 8 is made. As the external switch, a seating sensor mounted on the toilet seat, a push button switch of an operation box installed near the toilet bowl, and a person sensor for sensing the presence of a person in front of the toilet bowl can be used. The electromagnetic actuator 8 uses a Hall IC, a crank type limit switch or the like with a position detecting function.

The drainage feces opening / closing means A comprises a chain 12 connected to the shaft member 4 and a valve body 13 connected to the lower end of the chain 12. When the chain 12 is lifted, the valve body 13 is lifted. It floats and the cleaning water in the water tank is drained (washed). Further, a spacer 14 is provided between the side wall 1 and the flange portion 3 a of the bracket 3.
Is installed.

In the initial position of the water rinsing lever 5, the worm 7 of the electromagnetic actuator 8 is in the vertical state, and the arc groove 11 is located in the upper right half position. At this time, the stopper 3c has the arc groove 1
It is located at the bottom of 1. From the normal state described above, when an output is emitted from a seating sensor that detects that a person is seated on the toilet seat in the automatic mode, the electromagnetic actuator 8
Is energized, and the shaft member 4 is moved to 9
Rotate 0 °. In this case, as shown in FIG. 4, the gear 6 is rotated clockwise (clockwise) through the worm 7, and the shaft member 4 is rotated rightward about its rotation axis D to lift the chain 12. Wash automatically.

At this time, the water rinsing lever 5 is urged to rotate in the left direction (see arrow B) by the reaction of the force of the electromagnetic actuator 8, but the lower end of the arc groove 11 is stopped by the stopper 3c.
It does not turn because it hits. The return rotation of the shaft member 4 in the automatic mode causes a reverse current to flow in the electromagnetic actuator 8. When a reverse current is applied to the electromagnetic actuator 8, the water rinsing lever 5 is biased in the anti-B direction. However, the frictional force acting between the flange 3a and the water rinsing lever 5 to resist this force and the electromagnetic actuator 8 And the gravitational force of the worm 7 stops the water washing lever 5.

Next, in the manual mode, the water washing lever 5 at the initial position shown in FIG. 3 is turned to the right as shown by the arrow C in FIG. At this time, the arcuate groove 11 changes to the lower right half position, but the stopper 3c does not hit the lower end of the arcuate groove 11 in response to this change, and unlike the automatic mode, the stopper 3c does not move. It does not hinder turning. Therefore, the shaft member 4 rotates about the rotation axis D, opens the drain valve opening / closing means A, and a manual water washing process is performed.

When the relative position of the stopper 3c reaches the upper end of the arcuate groove 11, the water washing lever 5 cannot rotate. At this time, the user releases the water washing lever 5. The return rotation of the shaft member 4 in the manual mode causes the chain 12 to move when the valve body 13 is pushed down by the decrease in the level of the wash water.
Pulling force, water washing lever 5, electromagnetic actuator 8
And the gravity of the worm 7 and the like are added. That is, in the present embodiment, the electromagnetic actuator 8 is used as the shaft member 4
Since it is not coaxially engaged with and is engaged through the worm 7, the center of gravity of the washing lever 5 can be separated from the rotation axis D, and the separated center of gravity is the rotation axis D. It acts as a moment that assists the return rotation of the shaft member 4 around.

As described above, according to the present embodiment, when the shaft member returns and rotates in the manual mode, gravity mainly due to the electromagnetic actuator 8 causes the shaft member 4 to rotate around the rotation axis D.
Since it acts as a moment for assisting the return rotation of the shaft member 4, it can oppose the friction with the bracket 3 and improve the return rotatability of the shaft member 4. The present embodiment does not adopt a complicated configuration such as providing a return spring, does not specially attach a heavy weight to the flushing lever, and uses the electromagnetic actuator necessary for the function of the toilet flushing device. is there.

Further, in this type of toilet flushing device, it is necessary to attach a regulating pin for stopping the turning of the flushing lever to the shaft member, and the regulating pin is usually provided on the water tank side. With this configuration, it becomes difficult to insert the bracket into the central shaft hole. In this embodiment, since the stopper pin and the arc groove function as the regulating pin, the shaft member can be easily inserted and the mounting becomes very simple.

The stopper and the arcuate groove may be provided on the side of the washing lever and the arcuate groove may be provided on the side of the bracket.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a toilet flushing device of the present invention.

FIG. 2 is an explanatory view of the structure of a water rinsing lever used in the present invention as viewed from the left side of FIG.

FIG. 3 is an explanatory diagram showing a positional relationship between a stopper and a circular arc when a water washing lever is at an initial position.

FIG. 4 is an explanatory diagram showing a positional relationship between a stopper and an arc groove in the automatic mode.

FIG. 5 is an explanatory diagram showing a positional relationship between a stopper and an arc groove in the manual mode.

[Explanation of symbols]

1 ... Side wall, 2 ... Through hole, 4 ... Shaft member, 5 ... Washing lever,
6 ... Gear, 7 ... Worm, 8 ... Electromagnetic actuator.

Claims (1)

[Claims] 1. A shaft member, which is rotatably inserted through and held in a through hole formed in a side wall of a water tank and has a drain valve opening / closing means connected to one end extending into the water tank, and the shaft member. An electromagnetic actuator mechanism for driving, and a case-shaped water-washing lever in which the electromagnetic actuator mechanism is housed and fixed,
In the toilet flushing device in which the flush lever is swung to rotate the shaft member to operate the drain valve opening / closing means without operating the electromagnetic actuator mechanism in the manual mode, the center of gravity of the flush lever is the electromagnetic actuator mechanism. The toilet flushing device is characterized in that it is separated from the rotation axis of the shaft member by.