JP2011055951A - Electric opening/closing device of toilet seat or toilet lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric opening/closing device which can stably perform electrical opening/closing of a toilet seat or a toilet lid over a period of time. <P>SOLUTION: The electric opening/closing device of the toilet seat or the toilet lid is provided with: a rotation detector 724 which detects the rotation of a motor 721 or the rotation at a lower speed; an angle detector 725 which is arranged in a stage lower than the rotation detector 724 when viewed from the motor 721 and detects the rotation angle of a part where the speed is lower than the part in which the rotation detector 724 is arranged; and a controller which supplies the motor 721 with a predetermined amount of energization to allow it to perform at least one of opening operation and closing operation of the toilet seat or the toilet lid based on the rotation angle detected by the angle detector 725. When the relation between the rotation angle detected by the angle detector 725 and the rotation detected by the rotation detector 724 changes, the controller corrects the detected rotation angle based on the amount of change and supplies the motor 721 with a predetermined amount of energization based on the corrected rotation angle. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  Aspects of the present invention generally relate to an electric opening / closing device for a toilet seat or a toilet lid, and more specifically to an electric opening / closing device for a toilet seat or a toilet lid that can be electrically opened and closed by a driving device such as a motor.

  For example, there is an electric opening and closing device that can electrically open and close a toilet seat and a toilet lid by a driving device such as a motor. According to this, the user can open and close the toilet seat and the toilet lid, for example, by operating the operation button. Alternatively, when the entrance sensor detects the presence or absence of a user in the toilet room, the electric opening and closing device can open and close the toilet seat and the toilet lid. Therefore, it is convenient because the toilet seat and toilet lid can be opened and closed electrically without opening and closing the toilet seat and toilet lid by hand.

  In such an electric opening / closing device of the toilet seat or toilet lid, feedback control for detecting the opening / closing positions of the toilet seat and the toilet lid and opening / closing the toilet seat and the toilet lid at a predetermined speed corresponding to the opening / closing positions of the toilet seat and the toilet lid is performed. There is a toilet seat / toilet lid opening / closing device to perform (Patent Document 1). There is also an electric opening / closing device for a toilet seat or toilet lid that changes the driving amount of a drive motor by the load torque of the toilet seat or toilet lid (Patent Document 2). According to the opening and closing device described in Patent Documents 1 and 2, it is possible to prevent or absorb changes in the opening and closing speed of the toilet seat and toilet lid, and to open and close the toilet seat and toilet lid smoothly or stably. Can do.

  However, if the load on the toilet seat or toilet lid increases, for example, by incorporating a heat insulating material inside the toilet seat or toilet lid, the toilet seat or toilet lid is viewed from the rotating shaft that transmits rotation of the motor or the like to the toilet seat or toilet lid. It may be deformed. Alternatively, when the opening and closing by the opening and closing device is repeated for many years, the toilet seat and the toilet lid may be deformed as viewed from the rotating shaft, or the position of the toilet seat and the toilet lid as viewed from the rotating shaft may change. If it does so, since the shift | offset | difference will arise in the detection of the opening / closing position of a toilet seat or a toilet lid, there exists a problem that a toilet seat and a toilet lid cannot be opened and closed stably.

JP 7-31561 A JP 2004-180698 A

  The present invention has been made based on the recognition of such a problem, and an object thereof is to provide an electric opening and closing device capable of stably opening and closing the toilet seat or the toilet lid for many years.

  1st invention transmits rotation of a motor, a rotation axis which transmits rotation of the motor to a toilet seat or a toilet lid, and opens and closes the toilet seat or the toilet lid, and rotation which detects the amount of rotation of the motor or a decelerated amount of rotation An amount detection unit, an angle detection unit that detects a rotation angle of a portion that is provided at a lower stage than the rotation amount detection unit as viewed from the motor, and that is decelerated from a portion where the rotation amount detection unit is provided, and A control unit that supplies a predetermined energization amount to the motor based on the rotation angle detected by the angle detection unit, and executes at least one of an opening operation and a closing operation of the toilet seat or toilet lid, When a change occurs between the rotation angle detected by the angle detection unit and the rotation amount detected by the rotation amount detection unit, the control unit detects the rotation detected based on the change amount. Angle correction , Based on the rotation angle of the corrected, an electric switchgear toilet seat or toilet lid and supplying the energization amount predetermined for the motor. According to this electric opening / closing device for the toilet seat or toilet lid, even when the toilet seat or the toilet lid is deformed when viewed from the rotating shaft and the positional relationship between the rotating shaft and the toilet seat or the toilet lid changes from the initial state, the control unit Can correct the rotational angle detected by the angle detector based on the change, and can correct the positional relationship between the rotary shaft and the toilet seat or toilet lid. Therefore, it is possible to stably open and close the toilet seat or toilet lid for many years.

Moreover, 2nd invention is further equipped with the memory | storage part which matches and memorize | stores the said rotation angle and said rotation amount in an initial state in 1st invention, The said control part is the said rotation memorize | stored in the said memory | storage part The change amount is calculated by comparing the angle and the rotation amount with the rotation angle detected by the angle detection unit and the rotation amount detected by the rotation amount detection unit when the motor rotates. An electric opening / closing device for a toilet seat or toilet lid.
According to this electric opening / closing device for the toilet seat or toilet lid, even when the toilet seat or the toilet lid is deformed when viewed from the rotating shaft and the positional relationship between the rotating shaft and the toilet seat or the toilet lid changes from the initial state, the control unit Calculates a change amount based on the rotation angle and rotation amount data stored in association with the storage means, corrects the rotation amount or the rotation angle based on the change amount, and rotates the rotation shaft and the toilet seat or the toilet lid. It is possible to correct the positional relationship with. Therefore, it is possible to stably open and close the toilet seat or toilet lid for many years.

  According to the aspect of the present invention, there is provided an electric opening and closing device capable of stably opening and closing the toilet seat or the toilet lid for many years even when the toilet seat or the toilet lid is displaced with respect to the rotation shaft.

It is a model perspective view of a toilet device provided with the electric switchgear concerning an embodiment of the invention. In the toilet device of the present embodiment, the toilet lid is closed. It is a block diagram which illustrates the principal part composition of the toilet device of this embodiment. It is a plane schematic diagram which illustrates the internal structure of the toilet lid opening / closing unit concerning this embodiment. It is a block diagram which illustrates the principal part structure of the toilet lid opening / closing unit concerning this embodiment. It is a schematic diagram which illustrates the angle range (area) of the drive shaft detected by an angle detection part. It is a schematic diagram showing the structure of the attaching part of a toilet lid. It is a schematic diagram showing the structure of the attaching part of a toilet lid. It is a plane schematic diagram for demonstrating the relationship between a toilet lid and a drive shaft. It is a timing chart which illustrates the output signal of an angle detection part and rotation amount detection part when a toilet lid rotates between a fully closed state and a fully open state. It is a flowchart showing the specific example of correction | amendment operation | movement of the toilet lid opening / closing unit concerning this embodiment. It is a schematic diagram showing the state which the toilet lid of this embodiment closed, and the open state. It is a graph which illustrates the relationship between the opening angle of a toilet lid, and the torque loaded on a drive shaft by the weight of a toilet lid. It is a timing chart which illustrates the relationship between the opening angle of a toilet lid, and the driving force of a motor.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a schematic perspective view of a toilet apparatus provided with an electric switchgear according to an embodiment of the present invention.
Moreover, FIG. 2 represents the state which the toilet lid closed in the toilet apparatus of this embodiment.
FIG. 3 is a block diagram illustrating the main configuration of the toilet apparatus according to this embodiment.

  The toilet apparatus shown in FIGS. 1 and 2 includes a toilet seat apparatus 100 and a Western-style seated toilet (hereinafter simply referred to as “toilet bowl”) 800 for convenience of explanation. The toilet seat apparatus 100 includes a main body 400 provided behind the toilet bowl 800. The toilet apparatus according to the present embodiment is a “water pressure direct pressure type”, and a valve mechanism for controlling wash water flowing to the toilet bowl 800 is built in the main body 400. However, the present invention is not limited to this specific example, and can be similarly applied to a so-called “low tank type” toilet apparatus.

  A toilet seat 200 and a toilet lid 300 are pivotally supported by the main body 400 so as to be freely opened and closed. The toilet seat 200 is pivotally supported by a drive shaft provided relatively forward of the main body 400, while the toilet lid 300 is pivotally supported by a drive shaft provided relatively rearward of the main body 400. These drive shaft and shaft support will be described in detail later.

  As shown in FIG. 3, the toilet seat device 100 according to the present embodiment includes at least one of a toilet lid opening / closing unit (electric opening / closing device) 720 and a toilet seat opening / closing unit (electric opening / closing device) 780. The toilet lid opening / closing unit 720 is a unit that opens and closes the toilet lid 300 by a built-in motor. The toilet seat opening / closing unit 780 is a unit that opens and closes the toilet seat 200 with a built-in motor. The operations of these units are controlled by the control unit 640. The toilet lid opening / closing unit 720 and the toilet seat opening / closing unit 780 will be described in detail later.

  The toilet seat device 100 according to this embodiment includes a storage unit 490 that stores the rotation angle and the rotation amount detected by the toilet lid opening / closing unit 720 and the toilet seat opening / closing unit 780 in association with each other. The storage unit 490 stores a state at the time of manufacture or shipment of the toilet seat apparatus 100 or at the time of installation in the toilet room, that is, the rotation angle and the rotation amount in the initial state in association with each other. Note that the data stored in the storage unit 490 does not disappear even when the toilet seat device 100 is powered off.

  Moreover, the toilet seat apparatus 100 of this embodiment also has a function part as a sanitary washing apparatus. That is, the toilet seat apparatus 100 includes a cleaning function unit 610 having a water discharge nozzle 615 that ejects water toward a “butt” of a user sitting on the toilet seat 200. In the present specification, “water” includes not only cold water but also heated hot water. The toilet seat apparatus 100 further includes additional function units such as a toilet seat heating unit 210, an indoor heating unit 740, a toilet bowl cleaning unit 730, and an illumination unit 790. In addition to these, for example, a warm air drying unit that blows hot air toward the “buttock” of the user sitting on the toilet seat, etc., or sucks air in the bowl of the toilet bowl, a filter, a catalyst, etc. You may provide the deodorizing unit etc. which reduce an odor component through this.

  In the case where the indoor heating unit 740 and the deodorizing unit are provided, an exhaust port 440 from the deodorizing unit and an exhaust port 450 from the indoor heating unit 740 are appropriately provided on the side surface of the main body 400.

  The toilet seat heating unit 210 is an additional function unit that warms the toilet seat. The indoor heating unit 740 is an additional function unit that heats the toilet space in which the toilet seat device 100 is installed. The toilet bowl cleaning unit 730 is an additional function unit that automatically flows cleaning water into the bowl of the toilet bowl 800 of the toilet apparatus in which the toilet seat apparatus 100 is provided. The lighting unit 790 is an additional function unit that illuminates a part or the whole of the toilet seat device 100 or the toilet device.

  The operations of these additional function units are controlled by the control unit 640. A command from the operation unit (remote control) 900 is input to the control unit 640, and the operation of each additional function unit can be controlled by a user operation.

  However, in the present invention, the water discharge nozzle 615 and other additional functional units are not necessarily provided, and it is sufficient that at least one of the toilet lid opening / closing unit 720 and the toilet seat opening / closing unit 780 is provided.

  The toilet bowl cleaning unit 730 may be provided integrally with the toilet seat apparatus 100, but may be provided separately from the toilet seat apparatus 100, for example, attached to a low tank of a flush toilet. Also in this case, by connecting the toilet seat device 100 and the toilet bowl cleaning unit 730, the operation of the toilet bowl cleaning unit 730 attached to the low tank can be controlled by a control signal output from the control unit 640.

  Further, signals from the pyroelectric sensor 500, the human body detection sensor 420, and the seating sensor 422 are appropriately input to the control unit 640. Then, the control unit 640 controls additional function units such as the toilet lid opening / closing unit 720 and the toilet seat heating unit 210 based on the output of the pyroelectric sensor 500. In the toilet apparatus of the present embodiment, a recessed portion 410 is formed on the upper surface of the main body portion 400, and the pyroelectric sensor 500 is provided so as to be partially embedded in the recessed portion 410. In a state where the toilet lid 300 is closed, the pyroelectric sensor 500 detects the user's entry through the transmission window 310 provided in the vicinity of the base. However, in the present invention, these sensors 500, 420, and 422 are not necessarily provided.

Next, the toilet lid opening / closing unit 720 and the toilet seat opening / closing unit 780 will be described with reference to the drawings.
Here, since the toilet lid opening / closing unit 720 and the toilet seat opening / closing unit 780 have the same structure and perform the same operation, the toilet lid opening / closing unit 720 will be described below as an example.

FIG. 4 is a schematic plan view illustrating the internal structure of the toilet lid opening / closing unit according to this embodiment.
FIG. 5 is a block diagram illustrating the main configuration of the toilet lid opening / closing unit according to this embodiment.
4A is a schematic plan view of the toilet lid opening / closing unit as viewed from the front, and FIG. 4B is a cross-sectional view taken along the line AA in FIG. 4A.

  The toilet lid opening / closing unit 720 according to the present embodiment can be built in the main body 400, and its drive shaft (rotary shaft) 728 can be rotated by a motor 721. The drive mechanism includes a speed reduction mechanism 722 that decelerates the rotational output of the motor 721, a torque limiter 723 that restricts the maximum torque to be loaded, an angle detection unit 725, and an assist spring 726 that applies a biasing force to the drive shaft 728. . The speed reduction mechanism 722 includes a rotation amount detection unit 724 and appropriately includes a bevel gear, a worm gear, a spur gear, a planetary gear, and the like.

  The rotation amount detection unit 724 is provided on the upper side of the angle detection unit 725 when viewed from the motor 721, and includes a rotation amount sensor magnet 724a and a rotation amount sensor substrate 724b. On the other hand, the angle detection unit 725 is provided on the lower side of the rotation amount detection unit 724 when viewed from the motor 721, and includes an angle sensor magnet 725a and an angle sensor substrate 725b.

  That is, the rotation amount sensor magnet 724a of the rotation amount detection unit 724 is appropriately fixed to a relatively upper gear or the like in the vicinity of the motor 721, and rotates at a higher rotation speed than the angle sensor magnet 725a of the angle detection unit 725. Therefore, it is preferable that the rotation amount sensor magnet 724a is appropriately fixed from the motor 721 to the first or second gear.

  And the rotation amount sensor board | substrate 724b of the rotation amount detection part 724 can detect an electromotive force (Hall voltage) by the effect called a Hall effect. That is, when the rotation amount sensor magnet 724a rotates in conjunction with the rotation of the motor 721, the rotation amount sensor substrate 724b can detect a change in the voltage (Hall voltage). The change in the voltage appears as a pulse waveform, for example. As a result, the rotation amount sensor substrate 724b can detect the rotation amount of the gears and the like near the motor 721, that is, on the upper side of the angle detection unit 725. In the toilet lid opening / closing unit 720 according to the present embodiment, the rotation amount detection unit 724 can output one pulse-shaped waveform each time the drive shaft 728 rotates, for example, about 1 ° to 2 ° (see FIG. 10). ).

  On the other hand, the angle sensor magnet 725a of the angle detection unit 725 is appropriately fixed to a relatively lower shaft or gear near the drive shaft (rotation shaft) 728 and is slower than the rotation amount sensor magnet 724a of the rotation amount detection unit 724. It rotates at the rotation speed. Therefore, it is preferable that the angle sensor magnet 725a is appropriately fixed to a shaft, a gear, or the like in the vicinity of the drive shaft 728 in which the rotation speed of the motor 721 is sufficiently reduced by the reduction mechanism 722. As shown in FIG. 4, when the angle sensor magnet 725 a is attached to the output shaft 727 or the drive shaft 728 that holds the drive shaft 728, the angle detection unit 725 determines the rotation angle of the drive shaft 728. Can be detected.

  And the angle sensor board | substrate 725b of the angle detection part 725 can detect an electromotive force (Hall voltage) by the effect called a Hall effect etc. similarly to the rotation amount sensor board | substrate 724b. That is, when the angle sensor magnet 725a rotates in conjunction with the rotation of the motor 721, the rotation amount sensor substrate 724b can detect a change in Hall voltage. The change in the voltage appears as a pulse waveform, for example. As a result, the angle sensor substrate 725b can detect the rotation angle of the shaft, gears, and the like in the vicinity of the drive shaft 728, that is, the lower side of the angle detection unit 725. In the toilet lid opening / closing unit 720 according to the present embodiment, the angle detection unit 725 can detect an angle range (area) such as a shaft or a gear near the drive shaft 728. This angle range (area) will be described in detail later.

  By using the toilet lid opening / closing unit 720, the toilet lid 300 can be electrically opened and closed. Even when the toilet lid opening / closing unit 720 is attached, the toilet lid 300 can be manually opened and closed. In both cases of electric drive and manual operation, the toilet lid 300 can be lightly opened by providing the assist spring 726.

  In FIGS. 4 and 5, the case where the rotation amount detection unit 724 and the angle detection unit 725 are Hall ICs has been described as an example, but the present invention is not limited to this. The rotation amount detection unit 724 and the angle detection unit 725 may be, for example, a rotary encoder or a potentiometer. 4 and 5 show examples in which the assist spring 726 is built in the electric toilet lid opening / closing unit 720, but the present invention is not limited to this. That is, the assist spring 726 may be provided outside the toilet lid opening / closing unit 720.

Next, an angle range (area) detected by the angle detection unit 725 will be described with reference to the drawings.
FIG. 6 is a schematic view illustrating an angle range (area) of the drive shaft detected by the angle detection unit.
In the following description, as shown in FIG. 4, the angle sensor magnet 725 a is attached to the output shaft 727 that holds the drive shaft 728, and the angle detection unit 725 can detect the rotation angle of the drive shaft 728 as an example. Will be described.

  In the present embodiment, the rotation angle range of the drive shaft 728 is divided into four areas of A area, B area, C area, and D area in order from the closed state (0 °). In the present embodiment, the angles serving as the boundaries between these four areas are 20 °, 80 °, and 105 °, respectively. Which area the drive shaft 728 of the toilet lid opening / closing unit 720 is in can be detected by the angle detection unit 725 described above with reference to FIGS. 4 and 5.

  More specifically, the toilet lid opening / closing unit 720 according to the present embodiment includes two angle detection units 725. The first angle detector 725 is set to output a “high” signal between 20 ° and 105 °, and to output a “low” signal at other angles (see FIG. 10). On the other hand, the second angle detection unit 725 is set to output a “high” signal at 80 ° or more and to output a “low” signal at other angles (see FIG. 10).

  In the state set in this way, for example, when the first and second angle detection units 725 are outputting “low” signals, the control unit 640 determines that the drive shaft 728 is in the A area. To do. When the first angle detection unit 725 outputs a “high” signal and the second angle detection unit 725 outputs a “low” signal, the control unit 640 causes the drive shaft 728 to be in the B area. Determine that you are in When the first and second angle detectors 725 output “high” signals, the controller 640 determines that the drive shaft 728 is in the C area. When the first angle detection unit 725 outputs a “low” signal and the second angle detection unit 725 outputs a “high” signal, the control unit 640 causes the drive shaft 728 to be in the D area. Determine that you are in Thus, the control unit 640 can detect in which area the drive shaft 728 of the toilet lid opening / closing unit 720 is located.

  Here, as will be described in detail later, since the toilet lid 300 is pivotally supported by the drive shaft 728 at the shaft support portion, the rotation angle of the drive shaft 728 and the rotation angle of the toilet lid 300 substantially coincide with each other. Yes. Therefore, the control unit 640 can determine which area the toilet lid 300 is in by detecting which area the drive shaft 728 is in.

  The open end angle of the toilet lid 300 is set to any one within the D area. That is, the toilet lid 300 is stopped anywhere in the D area by a stopper (not shown) provided in the main body 400. On the other hand, the drive shaft 728 of the toilet lid opening / closing unit 720 is rotatable to an angle larger than the open end angle of the toilet lid 300.

Next, the structure of the attachment part of the toilet lid 300 will be described with reference to the drawings.
7 and 8 are schematic views showing the structure of the toilet lid attachment part. 7A shows the case cover 430 of the main body, and FIG. 7B is an enlarged view of the A part in FIG. Moreover, Fig.8 (a) represents a toilet lid and FIG.8 (b) is an enlarged view of the A section in (a).

  As shown in FIG. 7, the drive shaft 728 of the toilet lid 300 protrudes from the main body 400 in the lateral direction. A coupling portion extending in a direction perpendicular to the rotation axis is formed at the tip of the drive shaft 728. A projecting wall 482 is provided below the drive shaft 728, and a stopper 480 is provided below the projecting wall 482.

  On the other hand, as shown in FIG. 8, the toilet lid 300 is provided with a shaft support portion 370 that opens in a slit shape. The coupling portion at the tip of the drive shaft 728 protruding from the main body 400 is inserted into the shaft support portion 370, and the rotational driving force is transmitted from the drive shaft 728 to the toilet lid 300. That is, by inserting the drive shaft 728 into the shaft support portion 370, the toilet lid 300 is rotatably supported by the main body portion 400.

  An annular wall 371 is provided so as to surround the shaft support 370 of the toilet lid 300. The annular wall 371 is provided with a notch 374 sandwiched between the open ends 372 and 373. For example, when the toilet lid 300 is attached to and detached from the main body 400, it is necessary to adjust the orientation of the toilet lid 300 so that the protruding wall 482 of the main body 400 passes through the notch 374. The angle range at this time is, for example, about 80 ° to 90 °. When the toilet lid 300 is opened, the opening end 372 of the toilet lid 300 comes into contact with the stopper 480, and the opening end angle is regulated. In this way, the open end angle of the toilet lid 300 can be reliably regulated.

Next, operations of the toilet lid 300 and the toilet lid opening / closing unit 720 will be described with reference to the drawings.
FIG. 9 is a schematic plan view for explaining the relationship between the toilet lid and the drive shaft.
FIG. 10 is a timing chart illustrating the output signals of the angle detection unit and the rotation amount detection unit when the toilet lid rotates between the fully closed state and the fully open state.
9A is a schematic diagram showing a state (initial state) in which the toilet lid and the drive shaft are not displaced, and FIG. 9B is a diagram in which the drive shaft is displaced in the opening direction when viewed from the toilet lid. It is a schematic diagram showing a state.
FIG. 10A is a timing chart illustrating the output signals of the angle detection unit and the rotation amount detection unit in the state shown in FIG. 9A, and FIG. 6 is a timing chart illustrating output signals of an angle detection unit and a rotation amount detection unit in the state shown in FIG.

  In the toilet seat device 100 of the present embodiment, when the toilet seat device 100 is manufactured, shipped, or installed in the toilet room, that is, in an initial state, as shown in FIG. 9A, the drive shaft 728 is coupled. The major axis of the portion and the bottom surface of the toilet lid 300 are substantially parallel.

  On the other hand, for example, when the load of the toilet lid 300 is increased by incorporating a heat insulating material in the toilet lid 300, the shaft support portion 370 of the toilet lid 300 may be deformed when viewed from the drive shaft 728. Alternatively, when the toilet lid 300 is repeatedly opened and closed by the toilet lid opening / closing unit 720 for many years, the shaft support portion 370 of the toilet lid 300 may be deformed when viewed from the drive shaft 728.

  Alternatively, as described above with reference to FIGS. 4 and 5, the toilet lid opening / closing unit 720 can open the toilet lid 300 lightly by applying an urging force to the drive shaft 728, and reduces the burden on the motor 721. Assist spring 726 that can be used. The assist spring 726 biases the drive shaft 728 in the opening direction of the toilet lid 300. The urging force of the assist spring 726 is maximized when the toilet lid 300 is fully closed (closed), decreases as the toilet lid 300 performs the opening operation, and is minimized when the toilet lid 300 is fully opened. . Therefore, when the toilet lid 300 is in the fully closed state, the assist spring 726 continues to apply the maximum urging force to the drive shaft 728. Accordingly, when the toilet lid 300 is in the fully closed state, the shaft support portion 370 of the toilet lid 300 continues to receive the maximum force from the drive shaft 728 in the opening direction. According to this, the shaft support portion 370 of the toilet lid 300 may be deformed when viewed from the drive shaft 728.

  When the shaft support portion 370 of the toilet lid 300 is deformed when viewed from the drive shaft 728, as shown in FIG. 9B, the long axis of the coupling portion of the drive shaft 728 and the bottom surface of the toilet lid 300 are not substantially parallel to each other. . That is, the positional relationship between the drive shaft 728 and the toilet lid 300 changes from the initial state. More specifically, the position of the drive shaft 728 viewed from the toilet lid 300 is shifted in the opening direction from the initial state. Therefore, although the toilet lid 300 is in the fully closed state, the drive shaft 728 has already been rotated in the opening direction. According to this, a deviation occurs in the detection of the opening / closing position of the toilet lid 300.

  This will be further described with reference to FIG. When the position of the drive shaft 728 viewed from the toilet lid 300 deviates from the initial state in the opening direction (see FIG. 9B), the first and second as shown by arrows in FIG. 10B. The output signal of the angle detection unit 725 moves relatively to the fully closed state as viewed from the output signal of the rotation amount detection unit 724. Alternatively, the output signal of the rotation amount detection unit 724 relatively moves toward the fully opened state as viewed from the output signals of the first and second angle detection units 725. This is because the angle detector 725 detects the rotation angle of the drive shaft 728 as described above with reference to FIG.

  More specifically, the number of pulses from the rotation amount detection unit 724 in the A area (see FIG. 6) decreases, while the number of pulses from the rotation amount detection unit 724 in the D area (see FIG. 6) increases. . In addition, since the output signals of the first and second angle detectors 725 move relative to the output signal of the rotation amount detector 724, rotation in the B area (see FIG. 6) and the C area (see FIG. 6). The number of pulses from the quantity detection unit 724 does not change.

  Then, for example, when the toilet lid 300 opens from the fully closed state, the drive shaft 728 may reach the B area even though the toilet lid 300 does not reach the B area. In this case, the control unit 640 determines that the toilet lid 300 has reached the area B and makes a false detection. That is, the detection of the opening / closing position of the toilet lid 300 is shifted. The same applies to other areas.

  On the other hand, for example, when the toilet lid 300 is closed from the fully open state, the drive shaft 728 may not reach the B area even though the toilet lid 300 has reached the B area. In this case, the control unit 640 determines that the toilet lid 300 has not reached the B area and erroneously detects it. That is, the detection of the opening / closing position of the toilet lid 300 is shifted. The same applies to other areas.

  As described above, if the detection of the opening / closing position of the toilet lid 300 is deviated, the toilet lid 300 may not be stably opened / closed. As will be described in detail later, the controller 640 changes the driving force of the motor according to the opening / closing position of the toilet lid 300 in order to stably open and close the toilet lid 300. This is because if there is a shift in position detection, a shift occurs in the timing for changing the driving force of the motor.

  Therefore, in the toilet lid opening / closing unit 720 according to the present embodiment, the control unit 640 performs correction when the positional relationship between the drive shaft 728 and the toilet lid 300 changes from the initial state. That is, the control unit 640 changes the relationship between the rotation angle detected by the first and second angle detection units 725 and the rotation amount detected by the rotation amount detection unit 724 based on the change. Thus, the rotation angle detected by the first and second angle detectors 725 is corrected. More specifically, for example, when the number of pulses from the rotation amount detection unit 724 in the A area or the D area changes, the control unit 640 corrects the changed number of pulses.

  For example, when the toilet lid 300 is opened from the fully closed state, when the number of pulses from the rotation amount detection unit 724 in the A area decreases from 5 pulses (initial state) to 3 pulses, the control unit 640 The reduced two pulses are added as correction values to the number of pulses in the A, B, and C areas. Here, even if the positional relationship between the drive shaft 728 and the toilet lid 300 changes from the initial state, the total number of pulses output from the rotation amount detection unit 724 between the fully closed state and the fully open state of the toilet lid 300 is as follows. It does not change. This is because the output signals of the first and second angle detectors 725 have only moved relative to the output signal of the rotation amount detector 724. Therefore, the control unit 640 corrects the remaining two pulse counts as the number of pulses in the D area by adding the reduced two pulses as correction values to the number of pulses in the A, B, and C areas.

  For example, when the toilet lid 300 is closed from the fully open state, when the number of pulses from the rotation amount detection unit 724 in the D area increases from 6 pulses (initial state) to 8 pulses, the control unit 640 The increased two pulses are subtracted from the number of pulses in the B, C, and D areas as a correction value. Then, the control unit 640 subtracts the increased two pulses as the correction value from the number of pulses in the A, B, and C areas, and corrects the remaining number of pulses among the total number of pulses as the number of pulses in the A area.

  By performing such correction, the output signals (rotation angle) of the first and second angle detection units 725 that have moved relative to the fully closed state as viewed from the output signal (rotation amount) of the rotation amount detection unit 724. ) Can be corrected to the initial state. That is, it can be corrected to the state of the output signal shown in FIG. Therefore, the positional relationship between the drive shaft 728 and the toilet lid 300 can be apparently returned to the initial state, and the detection error of the opening / closing position of the toilet lid 300 can be suppressed. According to this, the rotation angle of the drive shaft 728 and the rotation angle of the toilet lid 300 seem to substantially coincide. And the control part 640 can open and close the toilet lid 300 stably.

  The number of pulses described above with reference to FIG. 10 is merely an example, and the number of pulses in each area and the number of pulses as a correction value are not limited to this. The number of pulses in the initial state is stored in the storage unit 490 (see FIG. 3).

Next, a specific example of the correction operation of the toilet lid opening / closing unit 720 according to the present embodiment will be described with reference to the drawings.
FIG. 11 is a flowchart illustrating a specific example of the correction operation of the toilet lid opening / closing unit according to the present embodiment.

  First, for example, when the user operates the operation unit 900 (see FIG. 3), the toilet lid 300 starts to open from the fully closed state by the toilet lid opening / closing unit 720 (step S101). The opening operation of the toilet lid 300 may be performed manually by the user. Subsequently, the control unit 640 determines whether or not the number of pulses from the rotation amount detection unit 724 in the A area or the D area has changed (step S103).

Here, the storage unit 490 stores in advance the number of pulses from the rotation amount detection unit 724 in each area. The control unit 640 compares the stored number of pulses with the number of pulses when the toilet lid 300 is operated to determine whether the number of pulses from the rotation amount detection unit 724 in the A area or the D area has changed. Can be determined.
That is, the storage unit 490 includes a rotation angle of a portion where the angle detection unit 725 is provided (for example, the output shaft 727) and a rotation amount of a portion where the rotation amount detection unit 724 is provided (for example, a gear near the motor 721). Are stored in association with each other. The control unit 640 compares the rotation angle and the rotation amount stored in association with the storage unit 490 with the rotation angle and the rotation amount when the toilet lid 300 is operated, so that the drive shaft 728 and the toilet lid 300 can be compared. It can be determined whether or not the positional relationship has changed from the initial state.

  When the control unit 640 determines that the number of pulses from the rotation amount detection unit 724 in the A area or the D area has not changed (step S103: NO), the control unit 640 does not perform correction. On the other hand, when the control unit 640 determines that the number of pulses from the rotation amount detection unit 724 in the A area or the D area has changed (step S103: YES), it determines whether or not the change has occurred three times in succession. Judgment is made (step S105).

  That is, here, it is determined whether or not the number of pulses from the rotation amount detection unit 724 in the A area or the D area has changed only once or twice due to noise or the like. When the number of pulses from the rotation amount detection unit 724 in the A area or the D area changes due to noise or the like (step S105: NO), the control unit 640 does not perform correction.

  On the other hand, when the number of pulses from the rotation amount detection unit 724 in the A area or the D area changes three times continuously (step S105: YES), the control unit 640 performs correction based on the change amount (step S105). S107). More specifically, as described above with reference to FIG. 10, the control unit 640 corrects the number of pulses from the rotation amount detection unit 724 in each area to the initial number of pulses stored in the storage unit 490. .

  According to this specific example, even if the number of pulses from the rotation amount detection unit 724 in each area changes, the control unit 640 causes the number of pulses from the rotation amount detection unit 724 in each area stored in advance in the storage unit 490. Based on this, the number of pulses can be corrected. As a result, the output signals (rotation angles) of the first and second angle detection units 725 that have moved relative to the fully closed state as viewed from the output signal (rotation amount) of the rotation amount detection unit 724 are set to the initial state. It can be corrected. In other words, even if the positional relationship between the drive shaft 728 and the toilet lid 300 changes from the initial state, the control unit 640 controls the drive shaft 728 based on the rotation angle and rotation amount data stored in association with the storage unit 490. And the positional relationship between the toilet lid 300 can be corrected.

  In this specific example, the case where the correction is performed based on the opening operation of the toilet lid 300 has been described as an example, but the control unit 640 may perform the correction based on the closing operation of the toilet lid 300. In the operation of step S105, it is determined whether or not the change in the number of pulses has occurred three times in succession in order to eliminate noise. However, this number is not limited to this, and is twice or four times or more. It may be.

Next, the relationship between the opened / closed state of the toilet lid 300, the torque applied to the drive shaft 728, and the driving force of the motor 721 will be described with reference to the drawings.
FIG. 12 is a schematic diagram showing a state in which the toilet lid of the present embodiment is closed and opened.
FIG. 13 is a graph illustrating the relationship between the opening angle of the toilet lid and the torque applied to the drive shaft by the weight of the toilet lid.
FIG. 14 is a timing chart illustrating the relationship between the toilet lid opening angle and the driving force of the motor.

  As shown in FIG. 12B, in the case of the toilet seat device 100 of the present embodiment, the center of gravity G is vertically lower than the horizontal line H in the drive shaft 728 when the toilet lid 300 is closed. Therefore, when the toilet lid 300 is opened from this state, when the center of gravity G comes on the horizontal line H, the torque on the drive shaft 728 due to the weight moment of the toilet lid 300 is the maximum value as shown in FIG. Take Tmax. When the toilet lid 300 is further opened, the torque due to its weight moment gradually decreases, and when the assist spring 726 is not provided, the center of gravity G is vertically above the drive shaft 728, that is, the vertical line V (FIG. 12A). ), The torque becomes zero. That is, the toilet lid 300 can maintain neutrality at this angle θ0.

  On the other hand, when the assist spring 726 is provided, the assist spring 726 biases the drive shaft 728 in the direction in which the toilet lid 300 opens. The assist spring 726 generates torque that gradually decreases with respect to the opening angle of the toilet lid 300 as shown by the broken line in FIG. By providing such an assist spring 726, torque due to the weight moment of the toilet lid 300 is reduced. That is, the remainder obtained by subtracting the torque of the assist spring 726 from the torque due to the weight moment of the toilet lid 300 is the torque required to open and close the toilet lid 300. Therefore, the toilet lid 300 can maintain neutrality at an angle where both are balanced. When the toilet lid 300 is opened beyond its neutral angle, the driving shaft 728 is loaded with torque in the opening direction. That is, when the toilet lid 300 is opened from its neutral angle, the toilet lid 300 is automatically opened to the open end angle thereafter.

  Thus, even when the assist spring 726 is not provided or when the assist spring 726 is provided, the torque on the drive shaft 728 due to the weight moment of the toilet lid 300 is the maximum value. After taking Tmax, it gradually decreases. Therefore, the control unit 640 gradually decreases the driving force (energization amount) of the motor 721 as illustrated in FIG. More specifically, the control unit 640 gradually decreases the duty ratio of the pulse wave energized to the motor 721. Then, the toilet lid 300 can be opened and closed smoothly or stably. Further, during the opening operation, the toilet lid 300 has a lower speed as it approaches the open end angle, and can slowly reach the open end angle.

  However, when the positional relationship between the drive shaft 728 and the toilet lid 300 changes from the initial state, the timing for switching the energization amount supplied to the motor 721 is shifted as shown in the timing chart shown in the lower part of FIG. Then, before the torque on the drive shaft 728 reaches the maximum value Tmax, the control unit 640 may reduce the amount of power supplied to the motor 721. Alternatively, there is a possibility that the energization amount supplied to the motor 721 may be reduced although the torque on the drive shaft 728 is relatively large. According to this, there is a possibility that the toilet lid 300 cannot be opened and closed smoothly or stably.

  In contrast, in the present embodiment, as described above with reference to FIGS. 9 to 11, even if the number of pulses from the rotation amount detection unit 724 in each area changes, the control unit 640 stores in the storage unit 490 in advance. The number of pulses can be corrected based on the number of pulses from the rotation amount detection unit 724 in each area. As a result, the output signals (rotation angles) of the first and second angle detection units 725 that have moved relative to the fully closed state as viewed from the output signal (rotation amount) of the rotation amount detection unit 724 are set to the initial state. It can be corrected.

  In other words, even if the positional relationship between the drive shaft 728 and the toilet lid 300 changes from the initial state, the control unit 640 controls the drive shaft 728 based on the rotation angle and rotation amount data stored in association with the storage unit 490. And the positional relationship between the toilet lid 300 can be corrected. As a result, the control unit 640 can return the timing for switching the energization amount supplied to the motor 721 to the initial state. Therefore, in this embodiment, the electric lid 300 can be stably opened and closed for many years.

  The toilet lid opening / closing unit 720 according to the present embodiment can learn the opening end angle of the toilet lid 300 by using the rotation amount detection unit 724 and the angle detection unit 725. For example, when the open end angle is reached when the toilet lid 300 is opened, the rotation of the motor 721 stops, and the rotation amount detection unit 724 detects this. Further, the angle detection unit 725 can learn the opening angle of the toilet lid 300. Therefore, the next time the toilet lid 300 is opened, the speed of the toilet lid 300 decreases as the opening angle is approached, and it can be controlled to slowly reach the open end angle.

  In this way, for example, even when there is a protruding body with a large protruding amount on the rear wall of the toilet room, when the toilet apparatus of the present embodiment is installed in the toilet room and is operated for the first time, the opening angle of the toilet lid 300 is Can learn. And from the next operation | movement, it can prevent colliding with the protrusion body vigorously. Similarly, when the toilet apparatus of this embodiment is installed and started to be used, a toilet lid opening / closing unit 720 is provided with a toilet lid opening / closing unit 720 even when a decorative frame with a large protruding amount is added to the rear wall of the toilet room. The opening angle of 300 is newly learned, and the opening operation of the toilet lid 300 can be controlled so that it does not collide with this from the next operation.

As described above, according to the present embodiment, the shaft support portion 370 of the toilet lid 300 is deformed when viewed from the drive shaft 728, and the positional relationship between the drive shaft 728 and the toilet lid 300 changes from the initial state. In addition, the control unit 640 can correct the positional relationship between the drive shaft 728 and the toilet lid 300 based on the rotation angle and rotation amount data stored in association with the storage unit 490. Therefore, the electric opening and closing of the toilet lid 300 can be stably performed for many years.
In the above description, the structure and operation of the toilet lid opening / closing unit 720 and the toilet lid 300 are mainly described, but the same applies to the structure and operation of the toilet seat opening / closing unit 780 and the toilet seat 200. Therefore, the same effect as that of the toilet lid opening / closing unit 720 can be obtained for the toilet seat opening / closing unit 780.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, size, material, arrangement, etc. of each element included in the toilet lid opening / closing unit 720, the toilet seat opening / closing unit 780, etc., and the installation forms of the rotation amount detection unit 724 and the angle detection unit 725 are limited to those illustrated. However, it can be changed as appropriate.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  100 Toilet Seat Device, 200 Toilet Seat, 210 Toilet Seat Heating Unit, 300 Toilet Cover, 310 Transmission Window, 370 Shaft Support, 371 Annular Wall, 372, 373 Open End, 374 Notch, 400 Main Body, 410 Recessed, 420 Human Body Sensor, 422 seating sensor, 430 case cover, 440 exhaust port, 450 discharge port, 480 stopper, 482 protruding wall, 490 storage unit, 500 pyroelectric sensor, 610 cleaning function unit, 615 water discharge nozzle, 640 control unit, 720 toilet lid Opening / closing unit, 721 motor, 722 deceleration mechanism, 723 torque limiter, 724 rotation amount detection unit, 724a rotation amount sensor magnet, 724b rotation amount sensor substrate, 725 angle detection unit, 725a angle sensor magnet, 725b angle sensor substrate, 7 6 assists spring 727 output shaft 728 drive shaft, 730 toilet cleaning unit, 740 indoor heating unit, 780 the toilet seat opening and closing unit, 790 lighting units, 800 the toilet, 900 operation unit

Claims (2)

A motor,
A rotation shaft for transmitting rotation of the motor to a toilet seat or a toilet lid, and opening and closing the toilet seat or the toilet lid;
A rotation amount detector for detecting the rotation amount of the motor or the reduced rotation amount;
An angle detection unit that is provided on a lower stage side than the rotation amount detection unit as viewed from the motor and detects a rotation angle of a portion that is decelerated from a portion provided with the rotation amount detection unit;
A control unit that supplies a predetermined energization amount to the motor based on the rotation angle detected by the angle detection unit, and executes at least one of an opening operation and a closing operation of the toilet seat or toilet lid;
With
When a change occurs between the rotation angle detected by the angle detection unit and the rotation amount detected by the rotation amount detection unit, the control unit detects the rotation detected based on the change amount. An electric opening / closing device for a toilet seat or toilet lid, which corrects an angle and supplies a predetermined energization amount to the motor based on the rotation angle after the correction. A storage unit that stores the rotation angle and the rotation amount in an initial state in association with each other;
The control unit includes the rotation angle and the rotation amount stored in the storage unit, the rotation angle detected by the angle detection unit when the motor rotates, and the rotation amount detected by the rotation amount detection unit. The electric amount of the toilet seat or toilet lid according to claim 1, wherein the amount of change is calculated by comparing

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