JP2004180699A - Electric opening/closing device for toilet seat or lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To minimize the sounds of the collision between the toilet seat or lid with a washing tank or the like in the driving to open. <P>SOLUTION: The electric opening/closing device for the toilet seats or lids comprises a rotating shaft rotating together with the toilet seat or lid, a drive motor for rotating the rotating shaft normally and reversely and a drive circuit for driving the drive motor. A memory means is provided to store the position at which the toilet seat or lid is driven in the direction of opening or stopped as an open end position, in the opening or closing of the toil seat or lid by transmitting the driving force of the motor to the rotating shaft through a reduction gear train. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for electrically opening and closing a toilet seat or a toilet lid in a Western-style toilet, and more particularly, to a device for electrically opening and closing a toilet seat and a toilet lid individually.
[0002]
[Prior art]
Conventionally, as described in Patent Document 1, a drive motor that opens and closes a toilet seat and a toilet lid, a power transmission unit that transmits power of the drive motor to the toilet seat and the toilet lid, and an output shaft of the drive motor A rotation detection unit configured to detect the presence or absence of a rotational movement of the drive motor, the rotation detection unit being configured in any one of the paths to the toilet seat and the toilet lid via a power transmission unit, and the rotation in the opening operation of the toilet seat and the toilet lid. This is an automatic toilet seat and toilet lid opening / closing device including a control unit that does not transmit a signal for stopping the drive motor unless detection information from the motion detection unit indicates that there is no rotational motion.
According to the above configuration, the toilet seat and the toilet lid are opened and closed by operating the drive motor and transmitting the power of the drive motor to the toilet seat and the toilet lid by the power transmission unit. In particular, when the toilet seat and the toilet lid reach the open position and cannot rotate any more in the opening operation, the rotation detection unit detects that the rotation of the drive motor has stopped, and sends a signal to the control unit. In response to this, the control means transmits a signal for stopping the drive motor to stop the rotation of the toilet seat and the toilet lid. In this manner, the control means does not stop the drive motor once the drive motor starts the opening operation unless the rotation motion detection means detects that the rotation movement of the drive motor has stopped. And continue opening until the opening operation cannot be performed any more. For this reason, the toilet seat and the toilet lid can reliably reach the open position. Further, since the drive motor is stopped when the rotation of the drive motor stops, no overload is applied to the drive motor.
[0003]
[Patent Document 1]
JP-A-6-105756
[Problems to be solved by the invention]
However, in the case of the above-mentioned conventional electric toilet seat and toilet lid opening and closing device, when the toilet seat and the toilet lid reach the open end position, the toilet seat and the toilet lid violently collide with each other and generate a loud noise. An object of the present invention is to reduce the collision noise between a toilet seat or a toilet lid and a washing tank during opening operation.
[0005]
[Means for Solving the Problems and Their Functions and Effects]
In order to solve the above-mentioned problems, according to the present invention, a rotary shaft that rotates together with a toilet seat or a toilet lid, a drive motor that rotates the rotary shaft in forward and reverse directions, and a drive motor that drives the drive motor In a toilet seat or toilet lid electric opening / closing device that transmits the driving force of the motor to the rotation shaft through a reduction gear train to open and close the toilet seat or toilet lid, the toilet seat or toilet lid is opened in the opening direction. Storage means for storing the position of the drive end and the stop position as the open end position, so that the drive motor can be controlled by grasping the open end position. The lid does not bump into the front of the tank and make a loud noise.
[0006]
According to a second aspect of the present invention, in addition to the first aspect, a rotation detecting means for detecting the presence or absence of a rotational movement of the drive motor and a state in which the detection information from the rotational movement detecting means indicates that there is no rotational movement. Since the storage means for storing the indicated position as the open end position is provided, accurate determination can be made.
[0007]
According to a third aspect of the present invention, in addition to the second aspect, the area detecting means for detecting the open end area of the toilet seat or the toilet lid, and the rotation is performed at a position where the detection information from the area detecting means indicates the open end area. Since the detection information from the motion detection means is provided with a storage means for storing a position indicating a state where there is no rotational movement as an open end position, it can be stored as an open end position except when stopped by an obstacle or the like, An accurate judgment can be made.
[0008]
According to a fourth aspect of the present invention, in addition to the second or third aspect, the rotation detecting means includes: a ring-shaped magnet having a magnetized pattern provided on a first reduction gear of a reduction gear train; Since it is configured with a magnetic sensor for detecting the magnetized pattern of the magnet, it is possible to read a signal change in a portion where the rotation is relatively fast, and to increase the resolution of rotation detection.
[0009]
According to a fifth aspect of the present invention, in addition to the third aspect, the area detecting means detects a ring-shaped magnet having a magnetized pattern provided on the rotating shaft and a magnetized pattern of the magnet. Since the magnetic sensor is configured with the magnetic sensor described above, it is not determined as the open end position except for the stop of the rotation of the open end area, so that a malfunction due to erroneous detection can be prevented.
[0010]
Further, in the invention described in claim 6, in addition to the inventions described in claims 1 to 5, the drive motor is configured to be PWM-controlled at a duty ratio, and a predetermined position before the open end position stored by the storage means. Since the PWM control is performed by lowering the duty ratio from the above, the operation of the toilet seat or the toilet lid can be gradually delayed from a predetermined position before the open end position, and it is possible to prevent the loud tank or the like from generating a loud noise.
[0011]
According to a seventh aspect of the present invention, in addition to the first to sixth aspects, the drive motor is short-braked controlled from a predetermined position before the open end position stored by the storage means. The operation of the toilet seat or the toilet lid can be rapidly delayed from just before the position, and it is possible to prevent a loud noise from being hit against the low tank or the like.
Further, in the invention of claim 8, in addition to the invention of claim 7, after the short brake control, the drive motor is again driven to open in the opening direction for a predetermined time. Even if it stops, it can be reliably moved to the open end position.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings.
FIG. 1 is a perspective view of a toilet seat apparatus 10 incorporating a toilet seat or toilet lid electric opening / closing device of the present invention, FIG. 2 is an exploded perspective view for explaining a mounting position of the toilet seat or toilet lid electric opening / closing apparatus, and FIG. FIG. 4 is a cross-sectional view of the toilet seat device 10 having the electric toilet seat opening / closing device 30 built therein, and FIG. In the figure, the casing 11 of the heating toilet seat device 10 is fixed using the upper surface of the rim on the back side of the toilet body 1, and a convex storage portion 11a is formed in the center of the front side of the casing 11, and a side wall 11b of the storage portion 11a is formed. The electric open / close unit 30 for toilet seat and the electric open / close unit 130 for toilet lid are attached, and the toilet seat 12 and the toilet lid 13 are attached to the electric open / close units 30 and 130, respectively.
[0013]
The toilet seat 12 and the toilet lid 13 are provided with connecting portions 12a, 13a and rotating portions 12b, 13b at their respective base ends, and the connecting portion 12a is connected to an electric opening / closing unit 30 for a toilet seat via an assist unit 80 described later. The connection portion 13a is non-rotatably connected to the rotation shaft 50 connected to the output shaft 140 of the electric opening and closing unit 130 for a toilet lid, respectively. The rotating parts 12b and 13b are provided with support shafts 50a (formed in the middle of the rotating shaft 50) and 81a (formed on the connecting shaft 81 connected to the rotating shaft 40) for supporting the toilet seat 12 and the toilet lid 13 in an openable and closable manner. Each is rotatably connected to the distal end portion 81a). In the drawing, reference numeral 150 denotes a drive circuit for driving the electric switching units 30 and 130 and a potting case for protecting the drive circuit.
[0014]
FIG. 5 is an exploded perspective view of the electric toilet seat opening / closing unit 30, FIG. 6 is an exploded perspective view of the drive motor assembly A, FIG. 7 is an exploded perspective view of the planetary gear assembly B, and FIG. FIG. 9 is a plan view of the assist unit 80 with the 31b removed, and FIG. 9 is an exploded perspective view of the assist unit 80. Note that the number of teeth and the tooth shape of each gear in FIG. 8 are different from actual ones (for example, the small gears 32b and 34b actually have seven teeth, but are illustrated as eight teeth in the figure).
As shown in the figure, the electric opening / closing unit 30 includes a casing 31 (consisting of a main case 31a and a lid case 31b) forming an outer shell, a drive motor assembly A (as shown in FIG. 5, the drive motor assembly A is a DC brush). A drive motor 32 composed of a motor or the like, a small gear 32b press-fitted and fixed to an output shaft 32a of the drive motor 32, a first gear fixing spacer 33 fixed to the drive motor 32 using screws or the like, and a small gear 32b. It comprises a first gear 34 having a large gear 34a meshing with it and a small gear 34b for transmitting power to the next stage, a rotating shaft 35 of the first gear 34, and a bearing 36 of the first gear 34 fixed to the spacer 33. You.
[0015]
A ring-shaped magnet 34c is integrated with the surface of the large gear 34a (on the side of the drive motor) by bonding or caulking. ), A second gear 37 having a large gear 37a meshing with the small gear 34b and a small gear 37b for transmitting power to the next stage, a large gear 38a meshing with the small gear 37b, and a sun gear for transmitting power to the next stage. The third gear 38 having the second gear 38b and the planetary gear assembly B (the planetary gear assembly B is a ring-shaped magnet fixed to the rotating shaft 40 and the rotating shaft 40 for detecting the rotational position of the toilet seat 12 as shown in FIG. 61, a tolerance ring 62 functioning as a torque limiter to prevent the load from being transmitted to the carrier 63 when a load greater than the setting is applied to the rotating shaft 40, a carrier 63 connected to the rotating shaft 40 via the tolerance ring 62, a carrier A planetary gear 64 rotatably mounted on a planetary shaft 63a provided on the shaft 63; a bearing 65 for restricting the movement of the planetary gear 64 in the thrust direction; Internal gear 66 fit, and a planetary gear mechanism to the casing 31a by the mounting spacers 67 for non-rotatably fixed.) And constructed out.
[0016]
The small gear 32b, the small gear 34b and the small gear 37b are made of metal, the large gear 34a and the large gear 37a are made of resin, and the small gear 32b and the large gear 34a, and the small gear 34b and the large gear 37a are helical gears. . The large gear 38a and the sun gear 38b of the third gear 38 are integrally formed of metal, and the small gear 37b and the large gear 38a are spur gears. Further, the planetary gear 64 is made of metal, and the internal gear 66 is made of resin. The metal gear can be formed by metal sintering such as press sintering or injection sintering, or cold forging. Further, as an integral molding with the resin gear, it can be molded by insert molding or the like. As described above, by using a helical gear that can secure a contact area even if it is thinner than a spur tooth, the gear strength can be secured even if the gear itself is thinned, and the reduction gear train can be made compact. Also, by using the helical gear having a large contact area for the first and second reduction gear trains that rotate at a relatively high speed, the backlash can be reduced and the transmission efficiency can be increased. Further, by forming the meshing of the helical gear portion with a metal (small gear) and a resin (large gear), it is possible to suppress generation of heat and noise due to wear. In addition, the third and fourth rows of reduction gears, which have relatively low rotation speed and high torque, are made of metal, so that the gears can be prevented from being broken.
[0017]
Next, a procedure for assembling the electric opening / closing unit 30 will be described with reference to the drawings.
As shown in FIG. 6, the assembly of the drive motor assembly A is performed in the following procedure. First, one end of the shaft 35 is inserted into the bearing hole 33a of the spacer 33, the first gear 34 is inserted into the shaft 35, the other end of the shaft 35 is inserted into the shaft hole 36a of the bearing 36, and the positioning boss 33b is inserted into the positioning hole 36b. A self-tapping screw (not shown) is inserted and fixed in the fixing holes 36c, 36c, and screwed into the prepared hole 33c provided in the spacer 33, thereby integrating the spacer 33, the first gear 34, the shaft 35, and the bearing 36, and further driving. The output shaft 32a and the small gear 32b of the motor 32 are inserted through the insertion hole 33e of the spacer 33 while paying attention to the engagement between the first gear 34 and the small gear 32b, and the screw insertion hole 36d (the bearing 36) and the fixing hole 33d ( A screw is inserted from the spacer 33) and screwed into a screw hole 32c provided in the drive motor 32 to complete the assembly. Note that the screw insertion hole 36d has a diameter larger than the screw head, and the fixing hole 33d on the screw insertion hole 36d side has a diameter larger than the screw head up to the middle (at the position having the same thickness as the other fixing hole 33d). By making the diameter such that the screw portion penetrates from the middle, two fixing screws to the drive motor 32 can be shared.
In this way, by integrating the first stage of the reduction gear train with the drive motor 32, shaft runout and the like can be suppressed, and transmission efficiency can be increased.
[0018]
As shown in FIG. 7, the assembly of the planetary gear assembly B is performed in the following procedure.
First, the planetary gear 64 is mounted on the planetary shaft 63 a provided on the carrier 63, and the internal gear 66 is mounted while paying attention to the engagement with the planetary gear 64. Next, the terminal end of the shaft 63a is mounted on a bearing recess 65a provided in the bearing 65, and a small-diameter cylindrical portion 63c of a fastening spacer 63b provided on the carrier 63 is provided on the bearing 65 to secure an operation area of the planetary gear 64. The carrier 63, the planetary gear 64, the bearing 65, and the internal gear 66 are integrated by inserting and caulking through the through hole 65b (hereinafter, the integrated one is referred to as a "planetary gear mechanism"). A tolerance ring 62 is fitted on the outer periphery of the output shaft 63d of the planetary gear mechanism, and a plurality of convex portions 67e having substantially the same shape as a plurality of rotation preventing grooves 66a formed on the outer periphery of the internal gear 66 at predetermined intervals. A spacer 67 having an internal gear 66 (see FIG. 8) is provided on the internal gear 66, and a tolerance ring is provided in a connection hole 40a provided at the rear end of the rotary shaft 40 in a state where the output shaft 63d protrudes from an opening 67b of the spacer 67. The planet gear assembly B is assembled by fitting the outer circumference of the planet gear assembly 62. Note that a ring-shaped magnet 61 (having two NSs) is integrated with the flange 40b of the rotating shaft 40 in advance using a retaining ring or the like. A protection block 67c for protecting an area detection circuit 71, which will be described later, is integrally provided on the back side of the spacer 67, and a wiring processing rib 67d is provided on the surface of the 67c.
[0019]
Next, a procedure for assembling the unit will be described with reference to FIG.
A self-tapping screw (not shown) is inserted into a mounting hole 70b of the rotation detection circuit 70 on which a Hall IC 70a for detecting the magnetic force of the magnet 34c is mounted, and is screw-fixed to a lower hole 31e of a mounting boss provided on the casing 31a. 31a and the rotation detection circuit 70 are integrated. Next, a self-tapping screw (not shown) is inserted into a mounting hole 71c of the area detection circuit 71 on which the Hall ICs 71a and 71b for detecting the magnetic force of the magnet 61 are mounted, and a screw is inserted into a lower hole 31f of a mounting boss provided on the casing 31a. By fixing, the casing 31a and the area detection circuit 71 are integrated. A wiring (not shown) for energizing the drive motor 32 is soldered to the area detection circuit 71, and a positive temperature coefficient thermistor 71d connected in series to one of the energizing wirings is further soldered. . This positive temperature coefficient thermistor is provided to prevent an overcurrent from flowing to the drive motor 32. Next, the drive motor assembly A was housed in the motor housing portion 31c provided at the lower end of the casing 31a, and a self-tapping screw (not shown) was inserted into a mounting hole 33f formed in the spacer 33, and provided on the casing 31a. The casing 31a and the drive motor assembly A are integrated by screwing the mounting boss into the lower hole 31d.
[0020]
Next, the planetary gear assembly B is set so that the ridge 31r (see FIG. 8) provided on the cylindrical portion 31g of the casing 31a and the concave groove 67a provided on the outer periphery of the spacer 67 coincide with each other. Is inserted and fixed in the cylindrical portion 31g so that the outer shape of the casing 31a and the inner wall of the casing 31a are in contact with each other. In addition, a through hole 31i is provided in the inner wall of the cylindrical portion 31g, and water intrusion from the through hole 31i is provided by the peripheral wall 31j of the through hole 31i and the O-ring 40c accommodated in the O-ring groove 40 provided on the rotating shaft 40. It is configured to prevent this. Here, the reason why the casing 31a is attached using the spacer 67 is that the planetary gear mechanism itself requires a roundness due to its function, and in order to directly attach this to the casing 31a, the cylindrical portion 31g of the casing 31a also has a roundness. Is required, the dimensional tolerance is severe, and the yield is deteriorated. Therefore, the convex portion 67e of the spacer 67 and the convex ridge 31r of the casing 31a make a substantially point contact with the cylindrical portion 31g of the casing 31a so that the manufacturing tolerance can be absorbed by the elastic deformation of the spacer 67. This is for facilitating the production of.
[0021]
Next, the third gear 38 is inserted into the planetary gear mechanism while paying attention to the engagement between the planetary gear 64 and the sun gear 38b, and the engagement between the small gear 37b and the large gear 38a and the engagement between the large gear 37a and the small gear 34b. Carefully insert and fix the second gear to the shaft 31k. Finally, the shaft 31l provided in the casing 31b is inserted into the shaft hole 38c of the third gear 38, the tip of the shaft 31k is inserted into the bearing 31m, and the self-tapping screw is inserted into the mounting hole 31n provided in the casing 31a. Then, by screwing into the lower hole 31p of the mounting boss provided on the casing 31b, the electric opening / closing unit 30 for a toilet seat is completed.
As shown in FIG. 8, two circles (Ca, Cb) formed by the projection surface of the outer shape of the drive motor 32 and the outer shape of the planetary gear mechanism are arranged adjacent to each other, and further two circles (Ca, Cb) and two circles By disposing the shafts of the first gear 34 and the second gear 37 in the projection plane surrounded by the external tangents (Lc, Ld), the electric open / close unit 30 can be designed compact. Further, in the present embodiment, the axes of the first gear 34 and the second gear 37 are located within a projection plane surrounded by horizontal lines (La, Lb) passing through the center of two circles (Ca, Cb) and external tangents (Lc, Ld). Is arranged, it can be designed more compact. Instead of the horizontal lines (La, Lb), a perpendicular line passing through the center of each circle with respect to a line connecting the centers of the two circles (Ca, Cb) may be used. In the present embodiment, the perpendicular is also substantially horizontal, so there is no significant difference. However, when the reduction gear train is arranged in the horizontal direction, such a design is preferable.
[0022]
The electrical opening / closing unit 130 for the toilet lid has the same component configuration and assembling procedure as the electrical opening / closing unit 30 for the toilet seat. The differences will be described below. The toilet seat electric opening / closing unit 30 and the toilet lid electric opening / closing unit 130 have symmetrical component configurations. As shown in FIGS. 2, 4, and 8, the output shaft 140 of the electric toilet lid opening / closing unit 130 is provided with a substantially rectangular connection hole 141 into which the rotation shaft 50 is inserted and fixed so as not to rotate. A boss 131b for keeping a predetermined distance from the side wall 11b of the casing 11 and a receiving projection 131c of the cap member 11d are integrally provided on the casing 131a of the electric toilet lid opening / closing unit 130.
[0023]
Next, the assist unit 80 will be described with reference to FIGS.
The assist unit 80 includes a connection shaft 81 non-rotatably connected to the rotation shaft 40 of the electric opening / closing unit 30, an assist spring 82 having one end 82 a fixed to the connection shaft 81 to bias the toilet seat 12 in the opening direction, A connection cover 83 to which the other end 82b of the spring 82 is fixed and which is non-rotatably connected to the casing 11, a cover cover 84 surrounding the assist spring 82 together with the connection cover 83, and a detachable lever for detaching the toilet seat 12 from the casing 11. 85 and a fixing member 86 for fixing the assist unit 80 to the toilet seat 12.
[0024]
Serrations are formed at the distal end portion 81a (support shaft of the toilet lid 13) of the connecting shaft 81, and a large-diameter portion 81b for restricting movement of the connecting shaft 81 in the thrust direction is formed at a substantially central portion. Also, an O-ring groove 81c for sealing between the inner cylindrical portion 84a of the lid cover 84 is formed, and an insertion for inserting one end of the assist spring 82 between the large-diameter portion 81b and the O-ring groove 81c. A hole 81d is formed. Further, an O-ring groove 81e for sealing between the cover 83 and the inner cylindrical portion 83a is formed, and a groove 81f having substantially the same shape as the outer shape of the rotary shaft 40 is formed at the end.
[0025]
One end 82a of the assist spring 82 is bent toward the center and inserted into the insertion hole 81d, and the other end 82b is bent toward the center and fixed to a support groove 83b formed on the outer periphery of the inner cylindrical portion 83a of the connection cover 83. You. The root of the support groove 83b forms a prevention wall 83d that slightly increases the thickness of the bottom part 83c and prevents the rotation of the other end 82b of the assist spring 82. Further, at the rear end of the connection cover 83, there is formed a regulating protrusion 83e which is fitted to an engaging protrusion 31q formed integrally with the outer casing 31a of the electric opening / closing unit 30 for a toilet seat and whose rotation is regulated. A stopper 83f for restricting the rotation of the attachment / detachment lever is formed at one portion of the peripheral portion of the 83e. A small diameter portion 83h having a slightly reduced diameter is formed in the outer cylindrical portion 83g.
At the open end of the connection cover 83, welding ribs 83i are formed all around, and the lid cover 84 is integrated by ultrasonic welding or the like.
[0026]
The attachment / detachment lever 85 is formed of a support cylinder 85a with an upper cutout and a detachable cylinder 85b with a lower cutout, and between them forms a ring-shaped rib 85c with a slightly increased thickness inside and outside. The inner diameter of the ring-shaped rib 85c is substantially the same as that of the small diameter portion 83h and smaller than the outer cylindrical portion 83g. A gripping projection 85d is formed on the detachable cylinder 85b.
The fixing member 86 has a connection opening 86 a having substantially the same shape as the outer shape of the connection shaft 81, projections 86 b provided at predetermined intervals along the outer periphery to fix the toilet shaft 12 to the toilet seat 12 so that it cannot rotate, and a substantially L-shaped connection The crank 86c is formed. The connecting crank 86c is provided with a pilot hole 86d for a fastening screw and a stopper 86e for restricting the movement of the assist unit 80 (excluding the fixing member 86) in the thrust direction.
[0027]
Next, an assembly procedure of the assist unit 80 will be described. O-rings are received in the O-ring grooves 81c and 81e of the connection shaft 81, one end 82a of the assist spring 82 is inserted into the insertion hole 81d of the connection shaft 81, and the other end 82b is engaged with the support groove 83b of the connection cover 83. Then, the connecting shaft 81 is inserted into the inner cylindrical portion 83a of the connecting cover 83 until the end of the inner cylindrical portion 83a and the large-diameter portion 81b of the connecting shaft 81 come into contact with each other. Thus, the other end 82b of the assist spring 82 is accommodated in the prevention wall 83d. Next, the distal end portion 81a of the connecting shaft 81 is inserted into the inner cylindrical portion 84a of the lid cover 84, and the lid cover is superimposed with the back side of the lid cover 84 in contact with the welding rib 83i of the connecting cover 83. The connection shaft 81, the assist spring 82, the connection cover 83, and the lid cover 84 are integrated by oscillating the sound. Next, the detachable lever 85 is inserted into the outer cylindrical portion 83g. Since the outer cylindrical portion 83g has a slightly larger diameter than the ring-shaped rib 85c, the ring-shaped rib 85c rides over the outer cylindrical portion 83g and inserts into the small-diameter portion 83h. Then, the connection cover 83 and the detachable lever 85 are integrated, and the detachment of the detachable lever 85 in the thrust direction is restricted by the outer cylindrical portion 83g and the ring-shaped rib 85c. Next, the assist shaft 80 is integrated by inserting the connecting shaft 81 into the connecting opening 86a of the fixing member 86.
[0028]
The connecting shaft 81 of the assist unit 80 is inserted into the connecting hole 12d of the toilet seat 12 (see FIG. 1), and the assist unit 80 is inserted into the connecting portion 12a of the toilet seat 12. By fastening the screw hole 12c of the toilet seat 12 (see FIG. 1) with a self-tapping screw, the toilet seat 12 and the assist unit 80 are integrated. Since the connecting crank 86c can be elastically deformed outward before being attached to the toilet seat 12, the assist unit 80 (excluding the fixing member 86) can be detached from the fixing member 86, but is attached to the toilet seat 12. Later, since the outer deformation is restricted by the toilet seat 12, the assist unit 80 (excluding the fixing member 86) is restricted from coming off in the thrust direction by the stopper 86e and the flange 83j of the connection cover 83. Similarly, the detachable lever 85 has a small clearance between the connecting crank 86c and the outer cylindrical portion 83g, so that the detachable lever 85 cannot be deformed outward as it goes over the outer cylindrical portion 83g, thereby preventing the detachment in the thrust direction.
[0029]
Next, the tolerance ring 62 will be described with reference to the principle diagram of FIG. The tolerance ring 62 has a ring shape having a wave-shaped portion as shown in the figure, and each wave acts as a spring, and the acting force is proportional to the deformation amount of the wave. AF required for assembly, RL (N) for radial force, μ for friction coefficient, n for number of waves, c (mm) for wave deformation, K (N / mm) for spring constant, transmission torque Is Mt and the shaft diameter is d (m),
RL = n · c · K
AF = RL · μ
Mt = AF · d / 2
Can be calculated.
The spring constant can be set by changing the thickness, wave pitch, width, shape, and height of the material. Therefore, the maximum amount of torque applied to the rotating shafts 40 and 140 under normal conditions is determined by experiments and the like. The shape of the tolerance ring 62 is selected according to the torque.
When a torque equal to or larger than the set torque is generated in the rotating shaft 40, the wave-shaped portion 62a of the tolerance ring 62 is fixed by biting into the connection hole of the rotating shafts 40 and 140, and the ring-shaped edge 62b of the tolerance ring is fixed. The outer periphery of the output shaft 63d of the carrier 63 is slid, and an excess of a set torque or more is not applied to the inside of the electric opening / closing units 30, 130, so that damage to gears and the like can be prevented.
[0030]
FIG. 11 shows a cross-sectional view of the drive motor 32. As shown, the shaft of the drive motor 32 penetrates through the inside of the motor, and has a relatively large diameter inside and a small diameter at the exposed portion. The reason why the tip portion 32a has a small diameter is to reduce the number of teeth of the small gear 32b as much as possible and to increase the reduction ratio. It is also conceivable that the shaft itself has a small diameter. However, if the shaft is thin with respect to the shaft length, the shaft of the drive motor 32 becomes large, so that the shaft itself is not made small and the small gear 32b is attached. Only the part that is to be reduced in diameter.
[0031]
Next, the operation of the above configuration will be described.
FIG. 12 is a control block diagram of the toilet seat device of the present invention, FIG. 13 is a driver circuit diagram of the drive motor 32, FIG. 14 is a waveform of an energizing signal to the switching elements Tr1, Tr2, Tr3, and Tr4, and FIG. FIG. 16 shows the output signal waveforms of the provided Hall ICs 71a and 71b, FIG. 16 shows the output signal waveform of the Hall IC 70a provided in the rotation detection circuit, and FIGS.
[0032]
As shown, the control of the drive motor 32 is performed by the driver circuit 150. The driver circuit 150 includes switching elements Tr 1, Tr 2, Tr 3, and Tr 4 configured by transistors and the like for controlling the rotation direction and the amount of rotation, a positive temperature coefficient thermistor 71 d for preventing an overcurrent from flowing to the drive motor 32, Diodes d1 and d2 for preventing back electromotive force and the like during brake control from being applied to the CPU for electric opening / closing control.
When the drive motor 32 rotates forward, Tr1 and Tr4 are turned on, Tr2 and Tr3 are turned off, and when reversed, Tr1 and Tr4 are turned off, and Tr2 and Tr3 are turned on. Tr3 and Tr4 are turned on, and Tr1 and Tr2 are turned off. When the brake is applied, the shaft of the drive motor 32 is rotated by the weight of the seat or the lid, and the drive motor 32 acts as a generator, so that the above-described diodes d1 and d2 do not apply a back electromotive force to the CPU for electric opening / closing control. To do.
Further, the rotational speed of the drive motor 32 is controlled by performing Duty control of each ON time with a conduction signal waveform as shown in FIG. Note that G is set to 1 ms (PWM drive frequency 1 kHz) during forward rotation and reverse rotation, and G is set to 8 ms (PWM drive frequency 125 Hz) during braking. Note that ON-Duty H% indicates that the ON time during one cycle (Gms) is H%. For example, if G = 1 ms and H = 30%, 0.3 ms during one cycle (Gms) (1 ms * 30%) means turning on. It should be noted that H is set according to the detection position of the toilet seat or the toilet lid detected by the rotation detection circuit 70 and the area detection circuit 71. (Hereinafter referred to as 30% duty or the like.) The area includes area A (closed end area), area B (operating area), area C (open end area), and area D (abnormal area).
[0033]
FIG. 17 shows a flowchart when a toilet lid opening request is issued. For example, when a toilet lid open switch (not shown) provided on a remote controller or the like is operated by a human body detection sensor by a human body detection sensor and a toilet lid open request is made, it is checked whether the lid open end position is stored and the lid open end position is checked. Is stored, Tr1 and Tr4 are turned on at 100% duty (G = 1 ms), and when the output of the Hall IC 71a of the area detection circuit 71 switches from Low to Hi (80 ° detection), Tr1 and Tr4 are detected. Is turned on intermittently at 50% Duty (G = 1 ms), and the output pulse of the Hall IC 70a of the rotation detection circuit 70 after detecting 80 ° by the area detection circuit 71 (corresponding to the lid open end position) Tr1 and Tr4 are turned on intermittently at 40% duty (G = 1 ms) when the number of pulses corresponding to (−15 °) is reached, and the area is detected. When the output pulse of the Hall IC 70a of the rotation detection circuit 70 after detecting 80 ° in the path 71 reaches a predetermined number (the number of pulses corresponding to the lid open end position−the number of pulses corresponding to −10 °), Tr3 and Tr4 are set to 100. % Duty (G = 8 ms) for 0.1 second, Tr3 and Tr4 for 50% duty (G = 8 ms) for 0.4 second intermittently, and then Tr1 and Tr4 again for 20% When the duty (G = 1 ms), the drive motor 32 is turned on intermittently and the drive motor 32 is driven. When the output pulse of the Hall IC 70 a of the rotation detection circuit 70 does not change for 0.5 seconds or more, the toilet lid 13 is opened by an obstacle such as a low tank. It is determined that the operation has stopped (stop detection), and the power supply to the drive motor 32 is stopped. Even when the stop detection cannot be obtained, the power supply is stopped when the number of pulses equivalent to 8 ° can be obtained from the Hall IC 70a. When power is supplied to the drive motor 32 in the electric toilet lid opening / closing unit 130 in this manner, the reduction gear train (small gear 32b, first gear 34, second gear 37, third gear 38, planetary gear, The rotation of the drive motor 32 is transmitted to the rotation shaft 50 via the mechanism, the tolerance ring 62, and the output shaft 140, and the toilet lid 13 is opened. By using and applying a brake, it is possible to reduce the sound of collision with an obstacle such as a low tank. Lastly, the toilet lid is driven again at 20% duty in preparation for the next closing operation.
[0034]
FIG. 18 shows a flowchart when a toilet seat opening request is issued. For example, when a toilet seat open switch (not shown) provided on a remote controller or the like is operated and a toilet seat open request is made, it is checked whether the seat open end position is stored. If the seat open end position is stored, Tr1, Tr4 is turned on at 100% duty (G = 1 ms), and when the output of the Hall IC 71a of the area detection circuit 71 switches from Low to Hi (80 ° detection), Tr1 and Tr4 are turned on at 50% duty (G = 1 ms). The output pulse of the Hall IC 70a of the rotation detection circuit 70 after the intermittent ON state and the detection of 80 ° by the area detection circuit 71 is equal to a predetermined number (the number of pulses corresponding to the lid open end position−15 ° pulse). ), The Tr1 and Tr4 are turned on intermittently at 40% duty (G = 1 ms), and the area detection circuit 71 detects rotation after detecting 80 °. When the output pulse of the Hall IC 70a of the road 70 reaches a predetermined number (the number of pulses corresponding to the lid open end position−the number of pulses corresponding to -10 °), Tr1 and Tr4 are intermittently turned on at 20% Duty (G = 1 ms). When the output pulse of the Hall IC 70a of the rotation detection circuit 70 does not change for 0.5 seconds or more, it is determined that the toilet seat 12 opening operation has been stopped (stop detection) due to an obstacle such as a low tank. Power supply to the motor 32 is stopped. If the stop cannot be detected by the 35 ° drive (counting the number of pulses corresponding to 35 ° of the rotation detection circuit 70) after shifting to the area D, the energization is stopped at that point. If the stop position is equal to or more than 140 °, it is regarded as abnormal, and the process proceeds to an abnormal control flow described later. When the drive motor 32 in the electric toilet seat opening / closing unit 30 is thus energized, the reduction gear train (the small gear 32b, the first gear 34, the second gear 37, the third gear 38, the planetary gear mechanism) ), The rotation of the drive motor 32 is transmitted via the tolerance ring 62 and the output shaft 40, and the toilet seat 12 is opened. Note that when the toilet lid 13 is opened, brake control is performed to perform a gentle closing operation, but the toilet seat 12 does not. This is because a cushion leg is provided on the back surface of the toilet lid 13, and even when the toilet seat 12 is vigorously opened, a collision sound is originally suppressed by the cushion leg.
[0035]
For example, when a toilet lid and toilet seat simultaneous opening switch (not shown) provided on a remote controller or the like is operated and a toilet lid and toilet seat opening request is made, the toilet lid opening / closing unit 130 is operated as shown in the flowcharts of FIGS. The opening operation of the toilet seat 12 and the toilet lid 13 is performed by simultaneously controlling the respective drive motors 32 of the toilet seat opening / closing unit 30. As will be described later, the closing operation of the toilet lid 13 is terminated by the brake, and the closing operation of the toilet seat 12 is terminated by the motor drive. Therefore, the backlash of the reduction gear train of the toilet lid 13 is lower (closed side). ), The backlash of the reduction gear train of the toilet seat 12 is on the upper side (open side). Therefore, even if opening control is performed at the same time, the toilet seat 12 opens with a delay of the backlash, so that the toilet seat 12 and the toilet lid 13 A collision does not occur during the opening operation, and a problem such as an overload on the drive motor 32 side of the toilet seat 12 momentarily does not occur.
[0036]
FIG. 19 shows a flowchart when a toilet lid closing request is issued. For example, when a toilet cover closing switch (not shown) provided on a remote controller or the like is operated by detecting a human body separation by a human body detection sensor and a toilet cover closing request is made, if the toilet lid 13 is in the area D, Tr2 and Tr3 are reduced by 60%. An area detection circuit is turned on intermittently at Duty (G = 1 ms), and when it is in area C or at the time of transition to area C, Tr2 and Tr3 are turned on intermittently at 40% duty (G = 1 ms). When the output of the Hall IC 71a is switched from Hi to Low (80 ° detection), Tr2 and Tr3 are intermittently turned on at 20% duty (G = 1 ms) for 12 ms, and Tr3 and Tr4 are turned on at 100% duty for the next 10 ms. (G = 8 ms) to turn on. This control of 12 ms + 10 ms is repeatedly performed. During this control, a toilet lid cover presence / absence determination flow described later is performed. Further, when it is determined that the toilet cover is not provided when the output pulse of the Hall IC 70a of the rotation detection circuit 70 reaches a predetermined number (the number of pulses corresponding to 30 °) after the area detection circuit 71 detects 80 °, 12 ms + 10 ms Is continuously performed as it is. When it is determined that the toilet lid cover is present, the brake control of 10 ms is changed to 30 ms, and the control of 12 ms + 30 ms is repeatedly performed. When the output of the hall IC 71b of the area detection circuit 71 switches from Hi to Low (20 ° detection) regardless of the presence or absence of the toilet lid cover, Tr3 and Tr4 are turned on at 100% Duty (G = 8 ms), and the rotation detection circuit 70 is turned on. When the output pulse change of the Hall IC 70a is not longer than 0.5 seconds, it is determined that the closing operation of the toilet lid 13 is stopped by the upper surface of the toilet seat 12 (stop detection), and the brake control is stopped. If the stop detection is not obtained, the brake control is stopped after a lapse of a predetermined time (for example, 5 seconds), but this point is not shown in FIG. When power is supplied to the drive motor 32 in the electric toilet lid opening / closing unit 130 in this manner, the reduction gear train (small gear 32b, first gear 34, second gear 37, third gear 38, planetary gear, Mechanism), the rotation of the drive motor 32 is transmitted to the rotating shaft 50 via the tolerance ring 62 and the output shaft 140, and the toilet lid 13 is closed. The toilet lid can be closed gently by applying the brake by utilizing the occurrence of the odor. When the toilet lid cover is attached, the braking time due to the weight of the toilet lid 13 is increased by increasing the braking time, thereby preventing the toilet lid 13 from dropping vigorously due to its own weight. Further, by repeating the closing drive control and the brake control at relatively short time intervals, it is possible to absorb variations in the cogging torque of the drive motor 32. By utilizing the fact that cogging torque is not generated when the motor is energized, the energization is resumed before the influence of cogging torque starts to be exerted, so that the cogging torque is adversely affected. When the cogging torque is low, the toilet lid 13 closes vigorously when the cogging torque is low.
In the present embodiment, the control is changed depending on the presence or absence of the toilet lid cover. However, the control may be changed depending on the size of the toilet lid (eron gate size / regular size) or a combination thereof.
[0037]
FIG. 20 shows a flowchart when a toilet seat closing request is issued. For example, when a toilet seat closing switch (not shown) provided on a remote controller or the like is operated and a toilet seat closing request is made, if the toilet seat 12 is in the area D, the Tr2 and Tr3 are turned on intermittently at 60% duty (G = 1 ms). State, and when it is in area C or at the time of transition to area C, Tr2 and Tr3 are intermittently turned on at 40% duty (G = 1 ms), and the output of the Hall IC 71a of the area detection circuit 71 goes from Hi to Low. Upon switching (80 ° detection), Tr2 and Tr3 are turned on intermittently at 20% duty (G = 1 ms) for 12 ms, and Tr3 and Tr4 are turned on at 100% duty (G = 8 ms) for the next 10 ms. This control of 12 ms + 10 ms is repeatedly performed. When the output of the Hall IC 71b of the area detection circuit 71 switches from Hi to Low (20 ° detection), Tr3 and Tr4 are turned on at 100% Duty (G = 8 ms), and the output pulse change of the Hall IC 70a of the rotation detection circuit 70 changes. If the time is not longer than 0.5 seconds, it is determined that the closing operation of the toilet lid 13 has been stopped by the upper surface of the toilet seat 12 (stop detection), and the brake control is stopped. Then, Tr2 and Tr3 are intermittently operated at 5% Duty (G = 1 ms). The power is turned off and the power supply is stopped when 0.1 second has elapsed. The driving at the 5% duty is to prepare for the next simultaneous lid opening operation. When the drive motor 32 in the electric toilet seat opening / closing unit 30 is thus energized, the reduction gear train (the small gear 32b, the first gear 34, the second gear 37, the third gear 38, the planetary gear mechanism) ), The rotation of the drive motor 32 is transmitted via the tolerance ring 62 and the output shaft 40, the toilet seat 12 is closed, and the back electromotive force is generated by the weight of the seat near the closed end of 20 ° or less. By applying the brake, the toilet seat can be closed gently. By repeatedly performing the drive control and the brake control as in the case of the toilet lid, the adverse effect due to the variation in the cogging torque of the drive motor 32 is eliminated. In the closing operation of the toilet lid, the control was changed depending on the presence or absence of the toilet lid cover, but the control based on the presence or absence of the toilet seat cover was not changed on the toilet seat side. This is because the toilet seat itself is originally heavy and the influence of the toilet seat cover is small. However, when the weight of the toilet seat is light and the influence of the presence or absence of the toilet seat cover is a concern, the control may be changed according to the presence or absence of the toilet seat cover, similarly to the toilet lid side.
[0038]
FIG. 21 and FIG. 22 show flowcharts when there is a toilet lid / toilet seat simultaneous closing request. For example, when a human body separation sensor is used by a human body detection sensor after using a small boy or a toilet lid / toilet seat close switch (not shown) provided on a remote controller or the like is operated and a toilet lid / toilet seat simultaneous close request is made, the toilet seat 12 / toilet If the lid 13 is in the area D, the toilet lid driving side Tr2 and Tr3 are turned on intermittently at 70% duty (G = 1 ms), and the toilet seat driving side Tr2 and Tr3 are turned on at 40% duty (G = 1 ms). When it is in the area C or when the area is shifted to the area C, the toilet lid driving side Tr2 and Tr3 are turned on intermittently at 60% duty (G = 1 ms), and the toilet seat driving side Tr2 and Tr3 are turned on. , Tr3 are turned on intermittently at 20% Duty (G = 1 ms), and when the output of the Hall IC 71a of the area detection circuit 71 switches from Hi to Low (80 ° detection), the toilet lid side becomes 12 s is intermittently turned on state Tr2, Tr3 with 20% Duty (G = 1ms) for toilet lid driving, followed 10ms is in the ON state Tr3, Tr4 at 100% Duty (G = 8ms). This control of 12 ms (drive control) +10 ms (brake control) is repeatedly performed. During this control, a toilet lid cover presence / absence determination flow described later is performed. Further, the toilet seat side intermittently turns on the toilet seat driving Tr3 and Tr4 at 70% duty (G = 8 ms) to perform brake control. Further, when it is determined that the toilet cover is not provided when the output pulse of the Hall IC 70a of the rotation detection circuit 70 reaches a predetermined number (the number of pulses corresponding to 30 °) after the area detection circuit 71 detects 80 °, 12 ms + 10 ms Is continuously performed as it is. When it is determined that the toilet lid cover is present, the brake control of 10 ms is changed to 30 ms, and the control of 12 ms + 30 ms is repeatedly performed. During this time, regardless of the presence or absence of the toilet lid cover, the toilet seat driving Tr3 and Tr4 are intermittently turned on at 90% duty (G = 8 ms) to perform brake control. When the output of the Hall IC 71b of the area detection circuit 71 switches from Hi to Low (20 ° detection) regardless of the presence or absence of the toilet lid cover, the toilet seat side turns on the toilet seat driving Tr3 and Tr4 at 100% Duty (G = 8 ms). When the output pulse change of the Hall IC 70a of the rotation detecting circuit 70 does not change for 0.5 seconds or more, it is determined that the toilet seat 12 closing operation has been stopped by the toilet upper surface (stop detection), and the brake control is stopped. Tr2 and Tr3 for toilet seat driving are intermittently turned on at 5% duty (G = 1 ms) for one second, and the control is terminated. On the toilet lid side, the toilet lid driving Tr3 and Tr4 are turned on at 80% Duty (G = 8 ms), and when the output pulse change of the Hall IC 70a of the rotation detection circuit 70 does not change for 0.5 second or more, the toilet seat 12 is turned on. It is determined that the toilet lid closing operation has stopped (stop detection), and the brake control is stopped. If the stop detection is not obtained, the brake control of both the toilet seat and the toilet lid is stopped after a predetermined time (for example, 5 seconds) has elapsed, but this is not shown in the figure. By controlling as described above, the toilet seat and the toilet lid 13 are driven on the toilet lid electric opening / closing unit 130 side until the toilet seat 12 and the toilet lid 13 exceed the self-standing position (around 80 °), and then the toilet seat 12 is placed on the toilet seat 12. By performing the gradual closing operation by the brake control on the toilet seat electric opening / closing unit 30 side with the toilet lid 13 mounted, the toilet seat and the toilet lid can be brought into close contact and smoothly closed. In the toilet seat closing operation in the case of simultaneous closing of the toilet seat and the toilet lid, repetitive control of drive control + brake control for removing the influence of the cogging torque of the drive motor 32 is not performed. This is because the brake control of the toilet seat 12 is performed in a state where the lid 13 is overlapped, so that there is no fear that the closing operation stops halfway due to cogging torque due to a large load.
[0039]
FIG. 23 shows a flowchart for storing the toilet lid (toilet seat) open end position. For example, when a toilet lid (toilet seat) opening switch (not shown) provided on a remote controller or the like is operated and a toilet lid (toilet seat) opening request is made, it is checked whether or not the toilet lid (toilet seat) open end position is stored. (Toilet seat) If the position of the open end is not stored, Tr1 and Tr4 are turned on at 100% duty (G = 1 ms), and the output of the Hall IC 71a of the area detection circuit 71 switches from low to high (80 ° detection). ) And Tr1 and Tr4 are turned on intermittently at 50% duty (G = 1 ms), and when there is no change in the output pulse of the Hall IC 70a of the rotation detection circuit 70 for 0.5 seconds or more, a trouble is caused by an obstacle such as a low tank. It is determined that the lid (toilet seat) opening operation has stopped (stop detection), and the power supply to the drive motor 32 is stopped. The number of output pulses of the rotation detection circuit 70 after shifting to the area C is counted, and the counted value is stored as a toilet lid (toilet seat) open end position. If the stop detection is not obtained, the toilet lid drive is stopped at the time of driving by 8 ° as shown in FIG. Similarly, when the stop detection cannot be obtained, the toilet seat is driven to the position of 140 ° as shown in FIG.
When the drive motor 32 in the electric toilet seat opening / closing unit 30 is thus energized, the reduction gear train (small gear 32b, first gear 34, second gear 37, third gear 38, and planetary gear mechanism) is provided. The rotation of the drive motor 32 is transmitted via the tolerance ring 62 and the output shaft 40, and the toilet seat 12 is opened. Note that when the toilet lid 13 is opened, brake control is performed to perform a gentle closing operation, but the toilet seat 12 does not. This is because a cushion leg is provided on the back surface of the toilet lid 13, and even when the toilet seat 12 is vigorously opened, a collision sound is originally suppressed by the cushion leg.
[0040]
FIG. 24 shows a flowchart of the toilet lid cover presence / absence determination. As shown in the figure, four outputs from the first pulse output of the Hall IC 70a of the rotation detection circuit 70 after the output of the Hall IC 71a of the area detection circuit 71 is switched from Hi to Low (80 ° detection) during the toilet lid closing operation. The time t until the pulse output of the 25th pulse is output is stored (Ta), and the time t from the output of the 25th pulse to the output of the 28th pulse is stored (Tb). The time t from the pulse output to the 28th pulse output is stored, the angular acceleration W of the toilet lid is calculated from Ta, Tb, and Tc, and the angular acceleration W is calculated from the angular acceleration w set in advance. If W> w, it is determined that the toilet lid cover is present, and if not W> w, it is determined that the toilet lid cover is not present, and the flow shifts to the flow shown in FIG. 19 or FIGS. . In the present embodiment, the presence or absence of the toilet lid cover is automatically determined based on the angular acceleration.However, a toilet lid cover presence / absence switch or the like may be provided on a remote controller or the like, or the angular velocity of the toilet lid may be used as a determination criterion. good.
[0041]
FIG. 25 shows an abnormal control flow. Normally, the toilet seat 12 does not rotate more than 110 ° because it contacts the casing 11. However, if the toilet seat open switch or the toilet seat / toilet lid simultaneous open switch is operated in a state where the toilet seat 12 and the toilet lid 13 are detached, the toilet seat 12 does not come into contact with the casing 11, so that it rotates to the control limit angle 140 °. (See FIG. 18). Even when the toilet seat 12 and the toilet lid 13 are to be mounted in such a state, the rotating shafts 40, 50 of the electric opening / closing unit and the connecting portions 12a, 13a and the rotating portions 12b, 13b provided at the base end portions of the toilet seat and the toilet lid. Does not fit because they do not mesh. For this reason, when the position of the rotary shaft 40 of the toilet seat electric opening / closing unit 30 detects 140 ° or more, it is considered that the drive is performed with the lid removed, and the output shaft is moved to around 90 ° to move the toilet seat So that it can be mounted. When 140 ° or more is detected on the toilet seat side, the toilet lid side electric opening / closing unit 130 also moves the rotary shaft 50 to around 90 ° in the same manner so that the toilet lid 13 can be attached. Note that since the area where the toilet lid 13 is located differs from time to time, regardless of which area the toilet lid 13 is moved to the area D and controlled from there, the opening / closing of the toilet lid to around 90 ° is ensured. The rotation axis 50 of the unit 130 can be moved.
[0042]
By the way, the toilet seat 12 is provided with a heater for heating inside and is relatively heavy. Therefore, the toilet seat 12 cannot be lifted only by the toilet seat electric opening / closing unit 30 having the same structure as the toilet lid electric opening / closing unit 130. For this purpose, an assist unit 80 is provided. The assist unit 80 includes an assist spring 82 having one end integrated with the casing 11 and the other end integrated with the toilet seat 12. The assist spring 82 has a natural length when the toilet seat 12 is substantially vertical, and is in a twisted state when the toilet seat 12 is closed.
Therefore, when the toilet seat 12 is closed, a torque on the opening side can be generated, whereby the toilet seat 12 can be lifted even with the substantially same structure as the electric opening / closing unit 130 for a toilet lid.
[0043]
One end 82a of the assist spring 82 is integrated with the casing 11 by engagement of the regulating projection 83e of the connection case 83 and the engaging projection 31q of the electric opening / closing unit 30 for a toilet seat attached to the casing 11. Is integrated with the toilet seat 12 via the connecting shaft 81 and the fixing member 86.
[Brief description of the drawings]
FIG. 1 is a perspective view of a toilet seat apparatus 10 incorporating a toilet seat or toilet lid electric opening and closing device of the present invention. FIG. 2 is an exploded perspective view for explaining a mounting position of the toilet seat or toilet lid electric opening and closing device of the present invention. 3 is a cross-sectional view of the toilet seat device 10 incorporating the electric toilet seat opening / closing device 30. FIG. 4 is a cross-sectional view of the toilet seat device 10 incorporating the electric toilet seat opening / closing device 130. FIG. 5 is an exploded view of the electric toilet seat opening / closing unit 30. FIG. 6 is an exploded perspective view of the drive motor assembly A. FIG. 7 is an exploded perspective view of the planetary gear assembly B. FIG. 8 is a plan view of the toilet seat electric opening / closing unit with the casing 31b removed. 9: Exploded perspective view of the assist unit 80 FIG. 10: Principle of the tolerance ring 62 FIG. 11: Cross-sectional view of the drive motor 32 FIG. 12: Control block diagram of the toilet seat device of the present invention FIG. Driver circuit diagram [Figure 14] Switch [FIG. 15] Output signal waveforms of Hall ICs 71a and 71b provided in area detection circuit 71 [FIG. 16] Output signal waveforms of Hall IC 70a provided in rotation detection circuit [FIG. FIG. 17 is a flowchart when a toilet lid opening request is made. FIG. 18 is a flowchart when a toilet seat opening request is made. FIG. 19 is a flowchart when a toilet lid closing request is made. FIG. 20 is a toilet seat closing request. Flowchart when there is a request [FIG. 21] Flowchart when there is a toilet lid / toilet seat simultaneous closing request (1)
FIG. 22 is a flowchart when a toilet lid / seat simultaneous closing request is made (2).
FIG. 23 is a flowchart for storing a toilet lid (toilet seat) open end position. FIG. 24 is a flowchart for determining the presence or absence of a toilet lid cover. FIG. 25 The output shaft of the electric opening / closing unit is opened with the toilet seat and the toilet lid removed. Abnormal control flow chart when moving in the direction
10 ... toilet seat device, 11 ... casing, 12 ... toilet seat, 13 ... toilet lid,
30 ... electric opening and closing device for toilet seat, 130 ... electric opening and closing device for toilet lid,
31 ... electric open / close casing, 32 ... drive motor, 33 ... spacer,
34 ... first gear, 35 ... first gear shaft, 36 ... first gear bearing,
37: second gear, 38: third gear,
A: drive motor assembly, B: planetary gear assembly,
40: rotating shaft for toilet seat, 50: rotating shaft for toilet lid

Claims (8)

A rotating shaft that rotates together with the toilet seat or the lid, a driving motor that rotates the rotating shaft in the forward and reverse directions, and a driving circuit that drives the driving motor. The driving force of the motor is reduced by a reduction gear. In the electric toilet seat or toilet lid opening / closing apparatus that opens and closes the toilet seat or toilet lid by transmitting it to the rotary shaft via a row, a storage unit that stores the position where the toilet seat or toilet lid is driven in the opening direction and stopped is stored as the open end position. Electric opening / closing device for toilet seat or toilet lid characterized by comprising 2. The electric opening / closing device for a toilet seat or a toilet lid according to claim 1, wherein a rotation detecting means for detecting the presence or absence of a rotational movement of the drive motor, and a position at which detection information from the rotational movement detecting means indicates a state of no rotational movement. Toilet seat and toilet lid automatic opening and closing device, characterized by comprising storage means for storing the opening position as an open end position. 3. The electric opening / closing device for a toilet seat or a toilet lid according to claim 2, wherein the area detecting means detects an open end area of the toilet seat or the toilet lid, and the rotation movement detecting means detects a position at which detection information from the area detecting means indicates the open end area. A toilet seat / toilet lid automatic opening / closing device, characterized by comprising storage means for storing, as an open end position, a position at which the detection information from the camera indicates a state without rotational movement. 4. The electric opening / closing device for a toilet seat or a toilet lid according to claim 2, wherein said rotation detecting means comprises: a ring-shaped magnet having a magnetization pattern provided on a first reduction gear of a reduction gear train; A motor-operated opening / closing device for a toilet seat or a toilet lid, comprising: a magnetic sensor for detecting a magnetic pattern. 4. The electric opening / closing device for a toilet seat or a toilet lid according to claim 3, wherein the area detecting means has a ring-shaped magnet having a magnetized pattern provided on the rotating shaft, and a magnetic sensor for detecting the magnetized pattern of the magnet. An electric opening and closing device for a toilet seat or a toilet lid characterized by comprising: 6. The electric opening / closing device for a toilet seat or a toilet lid according to claim 1, wherein the drive motor is PWM-controlled at a duty ratio, and the duty ratio is set at a predetermined position before an open end position stored by the storage unit. Motor-operated opening / closing device for a toilet seat or a toilet lid, characterized in that the toilet is lowered and PWM controlled. 7. The toilet seat or toilet according to claim 1, wherein the drive motor is short-circuit brake-controlled from a predetermined position before the open end position stored by the storage means. Electric opening and closing device of the lid 8. The electric opening / closing apparatus for a toilet seat or a toilet lid according to claim 7, wherein after the short brake control, the drive motor is opened again in the opening direction for a predetermined time.

Images