JPH0633916Y2 - Electric toilet seat opening / closing device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an electric toilet seat opening / closing device capable of automatically opening and closing a toilet seat electrically.

[Prior Art] Conventionally, an electric toilet seat in which a toilet seat is rotated by a motor is provided so that the toilet seat can be opened and closed in a hygienic manner without touching the toilet seat.

[Problems to be solved by the invention] In this electric toilet seat, when the toilet seat is rotated to the fully closed state, it collides with the toilet bowl, and when the toilet seat is rotated to the fully opened state, it becomes a low tank. Although there will be a collision, there is a problem that an impact noise is generated at the time of the collision and the electric toilet seat may sometimes be cracked. For this reason, it has been attempted to slow down the rotation speed of the toilet seat so that the impact at the time of a collision does not become large. However, if the rotation speed is slowed in this way, the time for opening and closing the toilet seat becomes extremely long. However, there was a problem that the usability became poor. In order to solve such a problem, an electric toilet seat in which the power supply voltage to the motor is lowered to a low voltage immediately before the toilet seat is fully opened or just closed is conceivable. In order to detect the open / closed position with the limit switch, the position where the power supply voltage to the motor drops to a low voltage varies due to variations in the mounting position of the limit switch, variations in the limit switch itself, etc. There is a problem of colliding with the toilet bowl.

The present invention has been made in view of the above points, and can shorten the opening / closing time of the toilet seat without increasing the opening / closing time. It is an object of the present invention to provide an electric toilet seat opening / closing device that can surely reduce the impact at the time of full opening and full closing.

[Means for Solving the Problem] However, the opening / closing device for the electric toilet seat according to the present invention is provided with the motor 3
In order to rotationally drive the toilet seat 2, the configuration is such that the power supply voltage to the motor 3 is controlled to drop to a low voltage immediately before the toilet seat 2 is fully opened or fully closed. A rotating body such as a rotating cam that rotates the seat in synchronization with the toilet seat 2.
22 and a detection switch 23 such as a limit switch operated by the rotator 22 are configured to be freely detectable.
It is characterized in that a manual position changing means 25 for manually changing the relative position of 22 to the shaft 24 supporting this is provided.

[Operation] As described above, when the toilet seat 2 is rotationally driven by the motor 3, the power supply voltage to the motor 3 is controlled to be lowered to a low voltage just before the toilet seat 2 is fully opened or fully closed. As a result, the rotation speed of the motor 3 becomes slower and the rotation speed of the toilet seat 2 becomes slower immediately before the toilet seat 2 is fully opened or just before it is fully closed. In addition to being able to reduce the size, the rotation speed of the toilet seat 2 slows only immediately before the fully open or fully closed state, so that the time required to open and close the toilet seat 2 does not become long and the usability is increased. However, in particular, in the present invention, a rotating body 22 such as a rotating cam which rotates the rotating position of the toilet seat 2 in synchronization with the toilet seat 2 and a detection switch 23 such as a limit switch operated by the rotating body 22 are provided. It can be freely detected and A manual position changing means for manually changing the relative position of the rotating body 22 with respect to the shaft 24 supporting the rotating body 22.
By providing 25, by changing the relative position between the rotating body 22 that rotates in synchronization with the toilet seat 2 and the shaft 24 that holds this, after the toilet seat 2 is completely attached, the displacement of the attaching position can be prevented. An appropriate position for absorbing and dropping the voltage to the motor 3 can be detected, and the impact when the toilet seat 2 is fully opened or fully closed is reliably reduced.

[Example] A drive box 8 is detachably attached to the toilet bowl 1,
The toilet seat 2 is fixed to a drive shaft 9 protruding from the drive box 8. A toilet lid 10 is attached to the drive shaft 9 so as to be vertically rotatable as shown in FIG. Drive box 8
A motor 3 such as a DC motor and gears 11a to 11h forming a speed reduction mechanism are mounted therein as shown in FIGS. 4 and 5. The gear 11a is the output shaft of the motor 3 and the gear 11h is the drive shaft 9
Attached to each. The gear 11d is attached to the input shaft 12 of the electromagnetic clutch 13, and the gear 11e is attached to the output shaft 14 of the electromagnetic clutch 13 so that the output from the motor 3 can be transmitted or disconnected by the electromagnetic clutch 13. is there. Opening / closing angle detecting means 26 for detecting the opening / closing angle of the toilet seat 2 is formed by a combination of rotating cams 22a, 22b as an example of the rotating body 22 and limit switches 23a, 23a as an example of the detection switch 23 in the drive box 8. Each circuit shown in the block circuit diagram of FIG. 6 is provided.

In the electric toilet seat thus formed, the toilet seat 2
When opening and closing the, the opening and closing operation switch 15 provided in the drive box 8 is turned on, and the motor 3 is rotationally driven by a signal from the motor control unit. At this time, when the opening / closing angle detection means 26 detects that the toilet seat 2 is in the position shown by the solid line in FIG. 2 (a), the motor control section works to drive the motor 3 to rotate in the forward rotation direction and the motor 3 The motor controller operates so that the voltage of the current supplied to the motor 3 is set to the rated voltage of the motor 3, and the clutch controller operates to turn on the electromagnetic clutch 13 to connect the input shaft 12 and the output shaft 14. The driving force is transmitted to the drive shaft 9. In this way, the motor 3 is driven to rotate at high speed by the high voltage, and the rotational driving force of the motor 3 is further increased by the gears 11a to 11h.
Is transmitted to the drive shaft 9 while being decelerated by, and the toilet seat 2 is rotationally driven upward at a high speed. When the opening / closing angle detecting means 26 detects that the toilet seat 2 has been rotated up to the angle of θ _{1 in} FIG. 2 (a) immediately before the toilet seat 2 is fully opened, it is shown in FIG. 3 (a). As shown, the motor control unit operates so that the voltage of the current supplied to the motor 3 becomes lower than the rated voltage of the motor 3, and the rotation speed of the motor 3 becomes slow.
Therefore, the rotation speed of the toilet seat 2 is also slowed down, and the toilet seat 2 is brought into full contact with the low tank 16 by loosely contacting it. When the opening / closing angle detecting means 26 detects that the toilet seat 2 has been rotated up to the angle θ in FIG. 2 (a) in which the toilet seat 2 is fully opened by contacting the low tank 16, the motor 3 is energized. The motor control section operates so as to stop, and the clutch control section operates so as to stop energization of the electromagnetic clutch 13. When the energization of the electromagnetic clutch 13 is stopped in this way, the rotational driving force of the motor 3 is not transmitted to the drive shaft 9. Therefore, even if the motor 3 continues to rotate by inertia even after the power supply is stopped,
This rotational force does not act as a force to rotate the toilet seat 2, and it is possible to prevent an unreasonable force from acting on the toilet seat 2.

Further, when the operation switch 15 is turned on, when the operation of the opening / closing angle detecting means 26 detects that the toilet seat 2 is in the position shown by the solid line in FIG. 2 (b), the motor 3 is rotationally driven in the reverse direction. As described above, the motor controller operates so that the voltage of the current supplied to the motor 3 is set to the rated voltage of the motor 3, and the electromagnetic clutch 13 is turned on by the clutch controller. The rotational drive force of No. 3 is transmitted to the drive shaft 9. In this way, the motor 3 is rotationally driven at high speed by the high voltage, and the toilet seat 2 is rotationally driven downward at a high speed. When the toilet seat 2 can seat 2 until the theta ₂ of the angle of the second view just before being fully closed (b) is rotated is detected by the action of the opening and closing angle detecting means 26,
As shown in FIG. 3 (b), the motor control unit operates so that the voltage of the current supplied to the motor 3 becomes lower than the rated voltage of the motor 3, and the rotation speed of the motor 3 becomes slow. Therefore, the rotation speed of the toilet seat 2 also slows down, and the toilet seat 2 comes into close contact with the toilet bowl 1 loosely. When the opening / closing angle forming means 26 detects that the toilet seat 2 has been rotated up to the angle θ in FIG. 2 (b) in which the toilet seat 1 is fully opened and fully opened, the motor 3 is energized. The motor control section operates so as to stop and the clutch control section operates so as to stop energization of the electromagnetic clutch 13, so that the transmission between the motor 3 and the toilet seat 2 is cut off and the rotation of the motor 3 is stopped.

Next, the configuration of the opening / closing angle detecting means 26 for detecting the opening / closing angle of the toilet seat 2 will be described in detail. A shaft 24 is rotatably held by the drive box 7, and the rotary cams 22a, 22 serving as the rotor 22 are mounted on the shaft 24.
Although b is not relatively rotated by an external force such as the transmission of the driving force described above, it is mounted so as to be relatively rotated by a considerably strong external force. An operation hole 27 is bored in each of the rotary cams 22a and 22b, and a tool (not shown) such as a screwdriver is put in the operation hole 27 and the rotary cam 22a is rotated by a considerable external force to output the output gear. Only the rotating cam 22a is rotated with respect to the shaft 24, which is prevented from rotating due to the meshing state of the 28 and the cam gear 29, and the position of the fixed limit switch 23a is changed to mount the toilet seat 2. After the completion, the relative position between the rotary cam 22a that rotates in synchronization with the toilet seat 2 and the shaft 24 that holds the rotary cam 22a is changed to absorb the deviation of the mounting position and reduce the voltage drop to the motor 3. It is possible to set an appropriate position for performing the operation and surely reduce the impact when the toilet seat 2 is fully opened or closed. The rotary cams 22a, 22b
The provision of two is for setting the proper position when the toilet seat 2 is fully opened and for setting the proper position when the toilet seat 2 is fully closed. The structure for manually rotating the rotating cams 22a, 22b is generically referred to as the manual position changing means 25, and the structure can be variously changed in design. Further, the opening / closing angle detecting means of the toilet seat 2
The 26 configurations can be modified in various ways. In the embodiment, the rotary cam 22a is used as the rotary body 22 to form a contact type, but the rotary body 22 is circular and the detection switch 23 is a reed switch to form a non-contact type position detection configuration. Is also good.

[Effect of the Invention] As described above, in the present invention, when the toilet seat is rotationally driven by the motor, the power supply voltage to the motor is lowered to a low voltage immediately before the toilet seat is fully opened or completely closed. Since it is configured to control, the rotation speed of the motor becomes slower and the rotation speed of the toilet seat becomes slower immediately before the toilet seat is fully opened and just before it is fully closed. It can be relaxed and the rotation speed of the toilet seat slows down only just before the fully open or fully closed state, so the time required to open and close the toilet seat does not become long, and it is easy to use. In particular, in the present invention, a rotating body such as a rotating cam which rotates the rotating position of the toilet seat in synchronization with the toilet seat,
A manual position changing means for manually changing the relative position of the rotating body with respect to the shaft supporting the rotating body, which is configured to be detectable by a detection switch such as a limit switch operated by the rotating body. Therefore, after the toilet seat is installed, the relative position between the rotating body that rotates in synchronization with the toilet seat and the shaft that holds it can be changed manually, and the deviation of the installation position can be absorbed. There is an advantage that an appropriate position for the voltage drop to the motor can be detected, and the impact when the toilet seat is fully opened or fully closed can be surely reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 (a).
FIG. 3B is a schematic view showing the opened / closed state of the toilet seat, FIG. 3A and FIG. 3B are time charts showing the voltage state of the motor, and FIG. 4 is a perspective view showing the device of the embodiment. Figure,
Fig. 5 is a development view showing the meshing of gears of the same as above, Fig. 6 is a partial front view of the same as above, and Fig. 7 is a block circuit diagram used in the above-mentioned device, where 1 is a toilet bowl, 2 is a toilet seat, and 3 is a motor. , 22 is a rotating body, 23 is a detection switch, 24 is a shaft, and 25 is a manual position changing means.

Claims (1)

[Scope of utility model registration request] 1. An electric toilet seat in which a motor is used to rotationally drive a toilet seat that is vertically rotatable on a toilet bowl, when the toilet seat is rotationally driven by a motor, the toilet seat is in a fully open state or a fully closed state. Just before the power supply voltage to the motor is controlled to drop to a low voltage, a rotating body such as a rotating cam that rotates the rotating position of the toilet seat in synchronization with the toilet seat, and a limit operated by the rotating body. Of the electric toilet seat, which is configured to be freely detectable by a detection switch such as a switch, and which is provided with a manual position changing means for manually changing the relative position of this rotating body with respect to the shaft supporting it. Switchgear.