JPH0547071U - Flush water tank device for flush toilet - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the operability by easily locking and unlocking the handle that opens and closes the drain valve. [Structure] A lever that operates a drain valve element transmits the rotation of a handle for operation through a transmission shaft, and a lock head is provided at the tip of the rotation shaft of the handle. By pushing it, it can be inserted into the lock hole and locked, and the lock can be released only by pulling it in the operating direction of the handle and the handle can be returned to its original posture. [Effect] Since the drain valve can be easily operated and the lock can be released quickly, it is possible to prevent the cleaning water from being drained unnecessarily due to the trouble of releasing the lock.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a flush water tank for supplying flush water to a toilet bowl, and more particularly to a flush water tank device in which a handle for operation can be easily locked and released when continuously flushing flush water.

[0002]

[Prior Art]

 Stool-type flush toilets are generally used in which a flush water tank is set up on the rear side and fixed. On the other hand, sanitary washing devices having a local washing function have recently come into widespread use, and as such electric equipment is installed in a toilet bowl, flush water for the toilet bowl can be automatically supplied. Some of the above have already been developed.

As this automatic type, there is one proposed by the present applicant and published as Japanese Utility Model Publication No. 63-198662. In this system, a drain valve that opens the flow path to the toilet bowl is connected to a drive device such as a motor, and this drive device is operated by a switch so that water can be automatically supplied. And in order to prepare for a power failure or failure of the electric motor, etc., a manual handle is also attached to the drain valve.

In order to open the drain valve, it is necessary to have a structure in which a lever for pulling up a ball chain connecting the drive device and a manual handle to the drain valve is rotated. For this reason, the base end of this lever is connected to the output shaft of the drive unit and the rotation shaft of the handle, and in the event of a power failure, the handle is turned to move the lever.

In the case of the drive device, if the switch is left on, the wash water can be continuously sent to the toilet bowl. However, in the manual operation using the handle, in order to continuously flush the washing water, the posture is locked and the drain valve is kept open. Due to such a lock, the handle disclosed in the above publication also has a handle that can be operated from above the wash water tank.

[0006]

[Problems to be solved by the device]

 However, the lock structure of this handle is that it is pulled up once and then turned in the locking posture. In contrast to such a manually operated handle structure, for example, a manual handle type wash water tank is equipped with a button on the handle as a locking means, and the handle can be mechanically locked by pressing the button and turning the handle. Widely used.

Compared to this conventional handle, the locking of the handle used in combination with the automatic handle is considerably troublesome. For example, when used by children and the elderly, it is often confusing to raise the handle and then rotate it. This is partly because the handling of pulling up the handle and the operation of turning the handle after the pulling up lack continuity in terms of movement. In other words, with various switches and handles, it is easier to operate by changing the direction of the force applied with a finger, and the operation is better, and the operation of pulling up and the operation of turning the handle in a completely different direction are required. That is, it remains difficult to handle in terms of continuity of movement.

Further, not only when the handle is locked but also when it is released, complicated movement of the fingertip is required. For this reason, it takes too much time to release the cleaning water, and the washing water is drained unnecessarily.

The problem to be solved in the present invention is to improve the operability by easily locking and releasing the handle for opening and closing the drain valve.

[0010]

[Means for Solving the Problems]

 The present invention is a flush water tank device including a drainage valve body in a flow path to a bowl of a toilet bowl, a lever for connecting and closing the drainage valve body, and a handle for rotating the lever. A transmission shaft that connects the handle so that it can move in the direction of its rotation axis and that transmits the rotation of the handle to the lever; a lock head that is provided on the tip peripheral surface of the rotation shaft of the handle; and the transmission shaft. A lock that is provided so as to penetrate through a member that rotatably supports and that can be inserted and restrained by incising on the trajectory drawn by the lock head when the handle is rotated to the valve opening position. The hole, an elastic body that biases the handle in the direction in which the lock head moves away from the lock hole, and the lever in a posture that is connected to the base end of the lever and sets the drain valve body to its closed position. Elasticity to urge Characterized by comprising and.

[0011]

[Action]

 When the handle is rotated in the direction to open the drain valve body, the lock head comes to fit the position of the lock hole.At this time, if the handle is pushed toward the lock hole, the lock head is inserted into the lock hole and restrained. It For this reason, to lock the handle, it is sufficient to rotate the handle and then push it. If you rotate the handle with your fingertip in advance, it will be locked. To release the lock, pull the handle slightly in the same direction as when locking and remove your fingertip to restore the elastic body that urges the lock head away from the lock hole. The lock head is pulled out of the lock hole by the force, and the action force from the elastic body that biases the lever to the posture that sets the drain valve body to its closed position is transmitted from the transmission shaft to the handle, so that the handle is closed. Automatically returns to the valve position posture.

[0012]

【Example】

 FIG. 1 is a perspective view showing the entire equipment of an automatic flush toilet equipped with the flush water tank device of the present invention, FIG. 2 is a vertical cross-sectional view showing the flush water tank portion housed in a casing, and FIG. 3 is a flush inside the casing. It is a cutaway view showing an upper left end portion of the water tank.

In FIG. 1, a toilet body 1 is integrated with a casing 2 that incorporates a sanitary washing device having a local washing function, and a toilet seat 2a and a toilet lid 2b are attached to the casing 2 so that they can be opened and closed, respectively. ing. A wall-mounted operation panel 2c is provided in order to feed cleaning water into the toilet body 1 from the nozzle device of the sanitary cleaning device, the hot air fan for drying, and the cleaning water tank described later. As shown in FIG. 2, the casing 2 contains a flush water tank 4 for flushing the toilet bowl, and a hand washing bowl 3 is integrated at the upper end of the casing 2. A water discharge pipe 3a for hand washing is fixed to the upper end portion of the hand washing bowl 3 by protruding to the front side.

The wash water tank 4 is provided with a ball tap 5 for supplying water from the outside. This ball tap 5 is equipped with a float 5a that moves up and down depending on the water level of the wash water. In addition to sending water directly to the wash water tank 4, a supply pipe 5b is also provided for using the water supply as hand wash water. It is connected between and. Further, a drain port 6 communicating with the ball 1a of the toilet body 1 is provided at the bottom of the flush water tank 4, and an overflow pipe 7 communicating with the drain port 6 is incorporated. A drain valve body 8 that opens and closes the drain port 6 is attached to the overflow pipe 7 so as to be vertically rotatable, and by opening the drain port 6, the wash water in the wash water tank 4 can be sent to the ball 1a. It

The opening / closing operation of the drain valve body 8 is performed by both the drive device 9 and the handle 10 for manual operation which are provided in the upper end of the side portion of the wash water tank 4 and which are contained in the clutch mechanism. FIG. 4 shows a front view of the drive device 9 portion (corresponding to the view seen in the direction of FIG. 3), FIG. 5 shows a partially cutaway plan view, and FIG. 6 shows a transverse sectional view. Note that FIG. 6 is shown as a developed sectional view for the sake of easy understanding of the description.

In the housing 9 a of the drive unit 9, a handle 10 for manual operation is rotatably incorporated, and a lever 11 for automatic operation protruding into the wash water tank 4 is incorporated. Is attached with a ball chain 8a connecting to the drainage valve body 8. A motor 12 is incorporated in the housing 9a as a drive source for rotationally driving the lever 11 for automatic operation, and the motor 12 includes a motor coil 12a and a rotor 12b with a magnet. A clutch mechanism 13 and a reduction mechanism 14 are arranged between the rotor 12b of the motor 12 and the lever 11.

The clutch mechanism 13 includes a solenoid coil 13a, a movable yoke 13b, and a fixed yoke 13c, and a first clutch gear 13d is attached to the tip of the movable yoke 13b. A second clutch gear 13e is provided on the housing 9a side so as to be rotatable coaxially with the first clutch gear 13d. The second clutch gear 13d meshes with the rotor 12b and integrally rotates when the motor coil 12a is energized. The movable yoke 13b is movable in its axial direction, and when the solenoid coil 13a is energized, it moves in the direction in which it is attracted to the fixed yoke 13c, and the first and second clutch gears 13d and 13e engage with each other. Accordingly, the rotation of the second clutch gear 13e is transmitted to the first clutch gear 13d.

The reduction mechanism 14 provided between the clutch mechanism 13 and the lever 11 is composed of three first, second and third reduction gears 14a, 14b and 14c using spur gears. The first reduction gear 14a is rotatably attached to the tip of the rotor 12b, and its teeth are meshed with the first clutch gear 13d. The second reduction gear 14b is arranged as an intermediate gear between the first and third reduction gears 14a and 14c, and the third reduction gear 14c forms teeth for transmitting its rotation to the lever 11. A drive shaft 15 rotatably attached to the housing 9a is connected and fixed to the base end of the lever 11, and a gear 15a formed at one end of the drive shaft 15 is meshed with the third reduction gear 14c. There is.

With this configuration, when the motor coil 12a is energized, the movable yoke 13b moves to engage the first and second clutch gears 13d and 13e as described above, and the rotor 12b rotates. Is transmitted from the second clutch gear 13e to the first clutch gear 13d. Therefore, the rotation is transmitted from the first reduction gear 14a meshing with the first clutch gear 13d to the third reduction gear 14c, and the third reduction gear 14c rotates the drive shaft 15 via the gear 15a, Finally, the lever 11 rotates. A tension coil spring 16 is connected to the drive shaft 15, and the tension coil spring 16 applies an urging force to the drive shaft 15 in a direction to maintain the lever 11 in a lowered posture.

On the other hand, the handle 10 for manual operation applies a rotational force to the lever 11 through a transmission path different from that of the drive shaft 15 rotated by the motor 12. For this transmission, the handle 10 incorporates a transmission shaft 17 as shown in FIG. 7 to 9 show the details of the handle 10 and the transmission shaft 17, FIG. 7 is an exploded view of the handle 10 and the transmission shaft 17, FIG. 8 is a right side view of FIG. Is a front view of the handle 10 and FIG. 10 is a rear view showing an upper end portion of the handle 10.

The handle 10 includes an operation arm 10a for hanging a fingertip, and a cylindrical sleeve 10b for attaching the transmission shaft 17 protruding to the back side in a posture orthogonal to the operation arm 10a. An engagement hole 10c having a smaller inner diameter is formed in an intermediate portion inside the sleeve 10b, and a transmission shaft 17 is connected to the tip end side of the engagement hole 10c as a connecting portion 10d. Further, a lock head 10e for locking having a posture parallel to the axis of the sleeve 10b is projected from the tip of the sleeve 10b. As shown in FIG. 10, the lock head 10e has an inferior arcuate vertical cross-sectional shape having an outline slightly larger than the outer peripheral surface of the sleeve 10b, and a stopper 10f projects from one end in the circumferential direction of its tip. The position of the stopper 10f is the circumferential end of the lock head 10e opposite to the direction in which the handle 10 is operated as shown in FIG.

On the other hand, the transmission shaft 17 is formed with a poorly arcuate gear 17a formed at one end that meshes with the gear 11a formed at the base end of the lever 11, and the operating force of the handle 10 is made by these gears 11a and 17a. Is transmitted to the lever 11. A bifurcated engagement head 17b is provided at the other end of the transmission shaft 17, and the engagement head 17b is inserted into the engagement hole 10c of the handle 10 by a snap fit method to be connected. That is, the tip of the bifurcated engagement head 17b has a taper that tapers, and by utilizing this taper and the elastic deformation of the engagement head 17b due to the bifurcated gap, the inside of the engagement hole 10c as shown in FIG. The engaging head 17b can be fitted into the. When fitted, the transmission shaft 17 is coaxially and integrally coupled to the sleeve 10b by key-joining with the connecting portion 10d. Further, a portion having a certain distance from the engagement head 17b to the gear 17 side is defined as a large diameter portion 17c, which corresponds to a distance from the engagement head 17b to the large diameter portion 17c when the handle 10 is connected. Then, the handle 10 and the transmission shaft 17 are allowed to move in the axial direction with respect to each other.

Further, the coil spring 18 is incorporated in the sleeve 10b as an elastic body. As shown in FIG. 6, the coil spring 18 is assembled so that one end thereof abuts on the housing 9a and the other end abuts on a wall surface around the engaging hole 10c of the handle 10. Therefore, in FIG. 6, when the handle 10 is pushed upward, the coil spring 18 is contracted, and the handle 10 moves until the end surface of the large diameter portion 17c of the transmission shaft 17 hits the wall around the engagement hole 10c, that is, in FIG. It can be moved by the distance L described in.

FIG. 11 is a schematic perspective view showing a connection relationship between the handle 10 and the housing 9 a of the drive device 9.

As shown in FIG. 6, the housing 9a of the drive device 9 is provided with a lock seat 9b which is a surface orthogonal to the axis of the sleeve 10b of the handle 10 when the handle 10 is incorporated in the housing 9a. Then, a lock hole 9c into which the lock head 10e of the handle 10 can be inserted is cut into the lock seat 9b. As shown in FIG. 11, the lock hole 9c is formed in an inferior arc shape similar to the sectional shape of the lock plate 10e, and a stopper block 9d for restricting the movement of the lock head 10e is provided at one end thereof so as to project toward the sleeve 10b. .. The stopper block 9d is located at the end of the lock hole 9c in the direction in which the handle 10 is directed when the handle 10 is turned in the direction of the arrow in FIG. 11 to open the drain valve body 8.

FIG. 12 is a schematic view showing the positional relationship between the lock head 10e of the handle 10 and the lock hole 9c of the lock seat 9b.

FIG. 3A shows a state in which the valve body 8 is closed without operating the handle 10, and the lock head 10 e locks the lock hole 9 c when viewed in the axial direction of the sleeve 10 b with respect to the lock hole 9 c. It is located in a region not included in the hole 9c. When the handle 10 is operated to open the drain valve body 8, the lock head 10e moves as shown by the arrow in (a) of the figure, and finally the lock head 10e becomes locked as shown in (b) of the figure. One end of the head 10e hits the stopper block 9d, and its movement is restricted. Then, if the handle 10 is pushed toward the lock seat 9b in this state, the tip portion of the lock head 10e can be inserted into the lock hole 9c.

FIG. 13 is a view showing the movement of the lever 11 by a manual operation as seen from the inside of the wash water tank 4, in which the fingertip is placed on the handle 10 in the direction of the arrow (in FIG. 3, the front face of the wash water tank 4 is shown. When rotated in the direction toward the side), the transmission shaft 17 also rotates integrally with this. Therefore, the gear 11a of the lever 11 meshing with the gear 17a of the transmission shaft 17 causes the tip of the lever 11 to rotate upward to take the posture shown in FIG. Therefore, the ball chain 8a is pulled up, the drain valve body 8 also moves upward, and the drain port 6 is opened. If the hand is released after this operation, the lever 11 is rotated in the clockwise direction in FIG. 10B by the restoring force of the tension coil spring 16 connected to the lever 11, and the lever of FIG. Return to the posture.

The handle 10 integrated with the drive unit 9 is attached to the upper end of the side wall of the wash water tank 4 as shown in FIG. Since the entire washing water tank 4 including the drive unit 9 and the handle 10 is covered by the casing 2, a lid 2d that can be opened and closed is provided so that the handle 10 can be operated from the outside.

In the above configuration, in the case of automatically supplying and stopping the wash water using the drive device 9, the operation switch of the operation panel 2c is turned on and off to operate and stop the motor 12. Let At this time, due to the rotation of the output shaft of the motor 12, the drive shaft 15 is rotationally driven through the clutch mechanism 13 and the speed reduction mechanism 14 that have the transmission system in the connected state, whereby the tip end side of the lever 11 is oriented upward. The drain valve body 8 can be opened. When the operation for stopping the washing water is performed, the transmission system of the clutch mechanism 13 with the motor 12 side is disconnected, and the restoring force of the tension coil spring 16 causes the lever 11 to return to the original posture and the drain valve body 8 to be removed. close.

On the other hand, the operation of opening the drainage valve body 8 by the manual handle 10 is as described with reference to FIG. If the clutch mechanism 13 does not connect the transmission system from the motor 12 to the drive shaft 15 unless the switch of the operation panel 2c is turned on, the lever 11 rotates only the speed reduction mechanism 13 part and is free. Rotate. Therefore, manual operation by the handle 10 is also possible.

Here, when the drain valve body 8 is maintained in the valve open position in order to continuously flush the wash water, the handle 10 is locked using the lock hole of the lock seat 9b, and the handle 10 (b) of FIG. ) The posture of the lever 11 is restricted as shown in FIG. This locking method will be described with reference to the schematic diagrams of FIGS.

As described with reference to FIG. 12, when the handle 10 is rotated in the opening direction, the lock head 10e of the handle 10 is gradually aligned with the opening area of the lock hole 9c, and the stopper block 9d causes the lock block 10d shown in FIG. Stop at position. The above process corresponds to (a) and (b) of FIG. When the handle 10 is pushed toward the lock seat 9b, the tip of the lock head 10e enters the lock hole 9c as shown in FIG. 14C, and the stopper 10f goes around the back surface of the lock seat 9b. .. On the other hand, the handle 10 is constantly urged clockwise in FIG. 12 by the tension coil spring 16 via the gear 11a of the lever 11 and the gear 17a of the transmission shaft 17. Therefore, in the state of FIG. 12 (b) and FIG. 14 (c), when the fingertip is released from the handle 10 and released, the handle 10 has a stopper 10f at its tip on the rear wall of the lock seat 9b. Move in the overlapping direction. Simultaneously with this movement, the restoring force of the coil spring 18 in the sleeve 10b urges the lock head 10e upward in FIG. 14 (d). As a result, as shown in (c) of FIG. 12 and (d) of FIG. 14, the stopper 10f prevents the stopper 10f from slipping out of the lock hole 9c, and the lock head 10c is held in that position.

By operating the handle 10 as described above, the lock head 10c can be locked on the lock seat 9b. In this operation, it is sufficient to pull the operating arm 10a of the handle 10 forward with the fingertip and push the operating arm 10a after the movement is stopped. Therefore, even when a lock is required, it can be easily operated with a fingertip, and it can be used more easily than the conventional method of pulling up and further rotating.

Further, in order to release the lock, it suffices to pull the operation arm 10a of the handle 10 in the posture of FIG. 13B forward. That is, when this operation moves the lock head 10e at the position of (d) in FIG. 14 to the right side in the drawing in the lock hole 9c, and the stopper 10f enters into the lock hole 9c, the coil spring 18 of the coil spring 18 is removed. The urging force causes the lock head 10e to come out of the lock hole 9c. Then, at the same time as this movement, the restoring force of the tension coil spring 16 causes the handle 10 and the lever 11 to return to their original positions in FIG. 13 (a), and the drain valve body 8 is closed.

As described above, in order to release the lock, it is sufficient to slightly pull the handle 10 with the fingertip in the valve opening operation direction and remove the fingertip, and it is not necessary to rotate or subsequently pull down the handle. .. Therefore, it can be unlocked easily and can be used safely by children and the elderly.

In the embodiment, the lock structure of the manually operated handle 10 that is electrically driven by the motor 12 is described, but the configuration of the present invention is applicable to a wash water tank including only a manually operated handle. Of course, can be applied.

[0038]

[Effect of the device]

 According to the present invention, when the handle is locked in order to keep the drain valve body in the open state, the handle can be easily held in the locked position only by rotating and pushing the handle. For this reason, if you put your fingertips in the posture of pushing the handle beforehand, you can make the pushing operation continuous after turning, so you can hang your fingers or change the direction of the acting force. No need. Also, the lock can be released by simply pulling the handle in the valve opening direction a little, and it can be released in a short time without the need for complicated fingertip movements. Therefore, not only the operability is improved, but also the lock can be released quickly, so that it does not take time to release the wash water and wastefully drains it.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of equipment of an automatic flush toilet including a flush water tank device of the present invention.

FIG. 2 is a vertical sectional view showing an arrangement of devices in a casing.

FIG. 3 is a left side view of the inside of the casing showing the arrangement of the handle and the drive device.

FIG. 4 is a front view of a drive device.

FIG. 5 is a partially cutaway plan view of a drive device.

FIG. 6 is a lateral cross-sectional view showing the connection structure of a drive system and a drive system from a handle to a lever in a developed state.

FIG. 7 is an exploded view of a handle and a transmission shaft.

FIG. 8 is a right side view of the transmission shaft in FIG.

FIG. 9 is a front view of the handle.

FIG. 10 is a rear view showing a lock plate portion formed on the handle.

FIG. 11 is a schematic perspective view of an essential part showing connection of a handle to a lock seat.

FIG. 12 is a schematic view of the movement of the lock plate with respect to the lock hole as seen in the axial direction of the sleeve.

FIG. 13 is a schematic view of the rotation of the lever due to the operation of the handle as seen from the inside of the wash water tank.

FIG. 14 is a schematic cross-sectional view for explaining the movement of the lock plate with respect to the lock hole and the locked state.

[Explanation of symbols]

 1 Toilet main body 2 Casing 4 Wash water tank 5 Ball tap 6 Drain port 8 Drain valve body 9 Drive device 9a Housing 9b Lock seat 9c Lock hole 9d Stopper block 10 Handle 10e Lock plate 10f Stopper 11 Lever 12 Motor 13 Clutch mechanism 14 Reduction mechanism 15 Drive shaft 16 Tension coil spring (elastic body) 17 Transmission shaft 18 Coil spring (elastic body)

Claims (1)

[Scope of utility model registration request] 1. A flush water tank apparatus comprising: a drain valve body in a flow path to a bowl of a toilet bowl; and a lever for connecting and closing the drain valve body and a handle for rotating the lever. The transmission shaft that connects the handle so that it can move in the direction of its rotation axis and that transmits the rotation of the handle to the lever, the lock head that is provided on the tip peripheral surface of the rotation shaft of the handle, and the transmission shaft. A lock hole that is provided so as to penetrate through a member that rotatably supports and that can be inserted and restrained by incising on the trajectory drawn by the lock head when the handle is rotated to a valve opening position. , An elastic body that biases the handle in a direction in which the lock head moves away from the lock hole, and a lever that is connected to a base end of the lever and that biases the lever to a posture that sets the drainage valve body to its closed position. Elastic body A flush water tank device for a flush toilet, comprising: