JPH0450821B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an electric toilet seat opening/closing device that can automatically open and close a toilet seat electrically.

[Background Art] Electric toilet seats have been conventionally provided in which the toilet seat is rotated by a motor so that the toilet seat can be opened and closed hygienically without touching the toilet seat. In this electric toilet seat, the rotational force of the motor is decelerated by a speed reduction mechanism formed by a gear train and transmitted as sufficient torque to the drive shaft of the toilet seat. If the toilet is always connected by a speed reduction mechanism, the toilet seat may not be able to be rotated and the toilet bowl may not be able to be used in the event of a power outage.

For this purpose, a clutch mechanism is provided as a part of the speed reduction mechanism, so that transmission between the motor and the drive shaft of the toilet seat can be interrupted or interrupted. In this clutch mechanism, a pair of gears facing each other in the speed reduction mechanism is provided with a clutch plate, and one gear of the pair of gears is formed to be slidable toward and away from the other gear. The meshing protrusion and the meshing recess provided on the respective surfaces are formed so that they can be freely engaged and disengaged as the two gears approach and separate, and when both clutch plates are not connected, the motor and the toilet seat drive shaft are connected. The toilet seat can be rotated manually by cutting off the transmission between the two. Then, by activating the electromagnetic coil, the electromagnetic coil attracts one end of the rotating plate, and by rotating the rotating plate, the other end of the rotating plate presses and slides one of the gears. By meshing the meshing protrusions and meshing recesses of each clutch plate provided on the gear and connecting both clutch plates, the motor and the toilet seat drive shaft are connected by connecting both gears via the clutch plate. The toilet seat can be rotated electrically by connecting the transmission between the two and operating the motor by operating a switch.

The problem with this device is when the electromagnetic coil is activated to rotate the rotary plate, and the rotating force of the rotary plate presses one of the gears, causing both clutch plates to mesh with each other. In order to maintain the meshing state of both clutch plates, a large force is required to rotate the rotating plate, but when the rotating force of the rotating plate is increased in this way, the engaging protrusion and the engaging recess are engaged. Even in the state where the clutch plates are not engaged, the rotational force is transmitted with the tip surfaces of both clutch plates in pressure contact with each other, and stable rotation is achieved by transmitting the rotational force after the engagement protrusion and the engagement recess are securely engaged. This means that communication cannot be carried out.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide an opening/closing device for an electric toilet seat that is capable of stably transmitting rotation in a clutch mechanism. It is.

[Disclosure of the Invention] The electric toilet seat opening/closing device according to the present invention has the following features:
A toilet seat 1 is provided on the toilet bowl so as to be movable up and down, and the operation of a motor 2 is transmitted to a drive shaft 4 of the toilet seat 1 through a speed reduction mechanism 3 formed of a gear train to rotatably drive the toilet seat 1. In an electric toilet seat in which a clutch mechanism 5 is provided in the mechanism 3 to enable intermittent transmission between the motor 2 and the drive shaft 4, the clutch mechanism 5 is arranged to face each of the pair of gears 6a and 6b of the deceleration mechanism 3, respectively. It consists of the provided clutch plates 7, 7b and a rotating plate 9 which is rotated by the operation of the electromagnetic coil 8 and is formed at least in part by a spring plate material 9a, and one gear 6a of the pair of gears 6a, 6b. are formed so as to be able to slide freely toward and away from the other gear 6b, and a meshing protrusion 10 and a meshing recess 11 provided on the opposing surfaces of the clutch plates 7a and 7b of each gear 6a and 6b are connected to both gears 6a. , 6b can be freely engaged and disengaged as they approach and separate, and the electromagnetic coil 8
It is characterized in that the one gear 6a is pressed and slid toward the other gear 6b by a rotating plate 9 that rotates with the operation of the gear 6b.
The above object has been achieved by forming at least a part of the rotary plate 9, which presses and slides the gear 6a, from a leaf spring material 9a.The present invention will be explained in detail below with reference to examples.

A drive box 14 is detachably attached to the toilet bowl, and a toilet seat 1 is fixed to a drive shaft 4 that projects from the drive box 14. A toilet lid 15 is further attached to the drive shaft 4 so as to be movable up and down. Inside the drive box 8 are gears 6a to 6g forming a motor 2 such as a DC motor and a speed reduction mechanism 3.
are provided as shown in FIGS. 1 and 4, the gear 6c is connected to the output shaft of the motor 2, and the gear 6g is connected to the drive shaft 4.
are attached to each.

Further, the gear 6a has its rotating shaft 12 in the bearing hole 13.
The gear 6a and the gear 6b can be freely moved toward and away from the gear 6b by sliding freely through the gear 6b.
Clutch plates 7a and 7b are fixed to the opposing surfaces of the clutch plates 7a and 7b, respectively. A mating protrusion 10 is provided on the opposite front surface of the clutch plate 7b, and a mating recess 11 is provided on the opposite front surface of the clutch plate 7a.
The gear 6a is pressed in a direction in which the meshing protrusion 10 and the meshing recess 11 do not mesh with each other by the resilient force of the spring 16 interposed between the gears 1a and 7b. Further, an electromagnetic coil 8 is installed inside the drive box 14, and is formed of a magnetic metal plate whose central portion is supported rotatably on a shaft 18 between the electromagnetic coil 8 and the tip of the rotating shaft 12 of the gear 6a. A rotating plate 9 is provided, and the rotating plate 9 is rotated by a spring 20 in a direction in which one end moves away from the iron core 21 of the electromagnetic coil 17 and the other end moves away from the tip of the rotating shaft 12. It is in force.
Here, the end of the rotating plate 9 on the rotating shaft 12 side is formed of a spring plate material 9a having elastic deformability such as spring steel. The electromagnetic clutch mechanism 5 is operated by these clutch plates 7a, 7b, electromagnetic coil 17, rotary plate 9, etc.
is formed. In FIG. 3, 23 is a toilet seat electric opening/closing circuit.

However, when opening and closing the toilet seat 1 in the electric toilet seat formed in this manner, a switch (not shown) is turned on to rotate the motor 2. At this time, the electromagnetic coil 8 is also energized at the same time as the motor 2 is energized, and the iron core 21 of the electromagnetic coil 8 is energized.
is excited, one end of the rotating plate 9 is attracted to the iron core 21, and the rotating plate 9 is rotated against the spring 20.
When the rotating plate 9 is rotated by the operation of the electromagnetic coil 8 in this way, the other end of the rotating plate 9 presses the tip of the rotating shaft 12, and the gear 6a is rotated against the spring 16.
By sliding the clutch plate 7a to the side, the engagement recess 11 of the clutch plate 7a and the engagement protrusion 10 of the clutch plate 7b are engaged, and the clutch plates 7a and 7b are connected, and the motor 2
The rotational driving force is transmitted to the drive shaft 4 via the speed reduction mechanism 3. At this time, as shown in FIG.
Even if the tip surfaces of the clutch plates 7a and 7b are in pressure contact with each other, the spring plate material 9a of the rotating plate 9 is elastically deformed, so that the pressure contact force between the clutch plates 7a and 7b does not increase, and the clutch plates 7a, As the gear 6b rotates due to slippage between the tips of the gears 7b, the meshing protrusion 10 and the meshing recess 11 immediately become engaged as shown in FIG. 2b. The clutch plates 7a and 7b are surely connected in a state where they are engaged, and the rotation of the motor 2 is stably transmitted to the drive shaft 4 of the toilet seat 1 via the reduction mechanism 3, and the toilet seat 1 is rotated smoothly. It is something that can be done.

Further, when the motor 2 is not energized, the electromagnetic coil 8 is also not energized, and at this time, the rotating plate 9 is not rotated, so the gear 6a is separated from the gear 6b, and the meshing butt The portion 10 and the meshing recess 11 do not mesh with each other and the clutch plates 7a, 7b
are not combined. Therefore, motor 2 and toilet seat 1
Since it is not connected to the drive shaft 4, the toilet seat 1 can be manually rotated up and down in the event of a power outage. In the above embodiment, a part of the rotating plate 9 is formed of the spring plate material 9a, but the rotating plate 9 may be entirely formed of the spring plate material 9a.

[Effects of the Invention] As described above, in the present invention, at least a portion of the rotating plate of the clutch mechanism is formed of a spring plate material, so that the gear can be rotated by rotating the rotating plate with an electromagnetic coil. When the two clutch plates are connected by pressing and sliding, the engagement protrusion and the engagement recess are not engaged, and the tip surfaces of each clutch plate are pressed against each other by the pressure from the rotating plate. Even when the spring plates of the rotating plates are elastically deformed, the pressure contact force between the clutch plates does not increase, and slippage occurs between the tips of the clutch plates, causing the engagement protrusion and engagement recess to immediately separate. The clutch plate is securely connected with the engaging protrusion and the engaging recess being engaged, and in a stable state, the rotation of the motor is transmitted to the drive shaft of the toilet seat via the deceleration mechanism, and the toilet seat is closed. can be rotated smoothly.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a mechanism according to an embodiment of the present invention, FIGS. 2a and 2b are enlarged views of the same clutch mechanism, and FIG. 3 is a perspective view showing the overall device of the present invention.
FIG. 4 is a partially cutaway perspective view of the same device. 1 is a toilet seat, 2 is a motor, 3 is a reduction mechanism, 4 is a drive shaft, 5 is a clutch mechanism, 6a, 6b are gears, 7
Numerals a and 7b are clutch plates, 8 is an electromagnetic coil, 9 is a rotating plate, 9a is a spring plate material, 10 is a mating protrusion, and 11 is a mating recess.

Claims (1)

[Claims] 1. A toilet seat is provided on a toilet bowl so as to be movable up and down, and the operation of the motor is transmitted to a drive shaft of the toilet seat via a gear train to rotate the seat, and a clutch mechanism is attached to the speed reduction mechanism. In an electric toilet seat, the clutch mechanism is rotated by the action of a clutch plate provided opposite each of a pair of gears of a speed reduction mechanism and an electromagnetic coil. A rotating plate, at least a part of which is formed of a spring plate material, is formed so that one gear of the pair of gears can be slid freely toward and away from the other gear, and the clutch plate of each gear is A meshing protrusion and a meshing recess provided on opposing surfaces can be freely engaged and disengaged as the two gears approach and separate, and a rotating plate that rotates as the electromagnetic coil operates connects one of the gears to the other gear. An electric toilet seat opening/closing device characterized in that it is configured to be pressed and slid to the side.