JP4338174B2 - Toilet seat or toilet lid position detection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a toilet device that performs control in accordance with the state of the toilet by detecting the position of the toilet seat or the toilet lid, and more specifically to a mechanism for detecting the opening / closing of the toilet seat or the toilet lid.
[0002]
[Prior art]
Automatization in the toilet space has progressed, and it has been equipped with heating toilet seats, warm water flush toilet seats, automatic opening and closing devices for toilet seats and toilet lids. However, since it is a waste of energy to always operate these functions, it is desirable to keep the functions provided at a low level or to stop them when the toilet is not used. Therefore, the closing of the toilet lid is one representation for judging when the toilet is not in use, and a means for detecting that the toilet lid is in the closed position has been required. Similarly, since the opening of the toilet seat is one representation for judging that the toilet is being used for a boy's small, a means for detecting that the toilet seat is in the open position has also been required.
[0003]
As means for realizing this, a working member such as a permanent magnet is provided on the toilet seat or toilet lid side, a micro switch is provided for the operation piece on the apparatus main body side that supports the toilet seat or the toilet lid so as to be rotatable, and a permanent magnet is provided. In response to this, a sensitive member such as a reed switch or Hall IC is attached to generate a toilet seat opening or toilet lid closing signal. However, it is known that the relative position between the toilet seat or the toilet lid and the apparatus main body varies greatly, and in order to reliably detect it, dimensional management in the production process is necessary, which is very laborious. (For example, see Patent Document 1)
[0004]
Recently, most toilets are equipped with a damper mechanism that is directly connected to the pivot of the toilet seat and toilet lid so that the toilet seat and toilet lid can be opened and closed quietly. It is known that it is preferable to apply means for detecting the position of the toilet lid. (For example, see Patent Document 2)
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-291652 [Patent Document 2]
Japanese Patent Laid-Open No. 2001-87166
[Problems to be solved by the invention]
However, if the permanent magnet is embedded in the oil damper mechanism, the oil damper mechanism itself must be replaced if the magnetic force of the permanent magnet is weak due to variations. Also, when a problem occurs in the function of slowly closing the oil damper mechanism itself, not only the oil damper but also the permanent magnet and the Hall IC have to be replaced, and the maintenance cost is expensive.
[0007]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a toilet seat or toilet lid position detecting device capable of individually replacing non-contact magnetic detecting means such as an oil damper mechanism, a permanent magnet, and a Hall IC.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a position detecting device for a toilet seat or toilet lid according to claim 1 comprises an oil damper type loosely-closing unit that controls opening and closing of the toilet seat or toilet lid, and the oil damper-type gentlely-closing unit. A permanent magnet that is non-rotatably attached to the rotary shaft of the motor, a support base that includes the oil damper type loosely-closed unit and has magnetic detection means for detecting the position of the permanent magnet in a non-contact manner, and the oil damper And an output shaft that is non-rotatably attached to the rotary shaft of the type of loosely-closed unit. The permanent magnet and the output shaft are configured to be detachable from the oil damper type of slowly-closed unit .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments will be described below with reference to the drawings.
FIG. 1 is a perspective view of a toilet seat device 10 incorporating a toilet seat or toilet lid electric opening / closing device or a toilet seat or toilet lid loose closing device of the present invention, and FIG. 2 is a toilet seat or toilet lid electric switching device or toilet seat or toilet lid. FIG. 3 is a sectional view of the toilet seat device 10 incorporating the toilet seat electric opening / closing device 30, and FIG. 4 is a toilet seat device 10 incorporating the toilet lid electric opening / closing device 130. 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 at the front center of the casing 11, and the side wall 11b of the storage portion 11a is formed. The toilet seat electric opening / closing unit 30 and the toilet lid electric opening / closing unit 130 are attached, and the toilet seat 12 and the toilet lid 13 are attached to the electric opening / closing units 30, 130, respectively.
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 an electric opening / closing unit 30 for the toilet seat via an assist unit 80 described later. The connecting portion 13a is non-rotatably connected to the rotary shaft 50 connected to the output shaft 140 of the toilet lid electric opening / closing unit 130. The rotating parts 12b and 13b are provided with support shafts 50a (formed in the middle of the rotary shaft 50) and 81a (connected to the rotary shaft 40) for supporting the toilet seat 12 and the toilet lid 13 so that they can be opened and closed. Respectively connected to the tip 81a). In the figure, reference numeral 150 denotes a drive circuit for driving the electric opening / closing units 30 and 130 and a potting case for protecting the circuits.
[0010]
5 is an exploded perspective view of the toilet seat electric 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. 8 is a casing of the toilet seat electric opening / closing unit. FIG. 9 is an exploded perspective view of the assist unit 80. FIG. The number of teeth and the tooth shape of each gear in FIG. 8 are different from the actual ones (for example, the small gears 32b and 34b are actually 7 teeth, but are described as 8 teeth in the figure).
As shown in the figure, the electric opening / closing unit 30 includes a casing 31 (constituted by a main case 31a and a lid case 31b) that forms an outer shell, a drive motor assembly A (as shown in FIG. A drive motor 32 constituted by a motor, a small gear 32b press-fitted to an output shaft 32a of the drive motor 32, a first gear fixing spacer 33 fixed to the drive motor 32 by using a screw or the like, a small gear 32b, A first gear 34 having a meshing large gear 34 a and a small gear 34 b for transmitting power to the next stage, a rotation shaft 35 of the first gear 34, and a bearing 36 of the first gear 34 fixed to the spacer 33. The
A ring-shaped magnet 34c is integrated on the surface of the large gear 34a (drive motor side) by bonding or caulking. ), A large gear 37a meshing with the small gear 34b, a second gear 37 having 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. A third gear 38 having planetary gear 38b and a planetary gear assembly B (as shown in FIG. 6, the planetary gear assembly B is fixed to the rotary shaft 40 and the rotary shaft 40 to detect the rotational position of the toilet seat 12; 61, a tolerance ring 62 that functions as a torque limiter so as not to transmit the load to the carrier 63 when a set load or more is applied to the rotation shaft 40, a carrier 63 that is connected to the rotation shaft 40 via the tolerance ring 62, a carrier A planetary gear 64 rotatably attached to a planetary shaft 63 a provided in 63, a bearing 65 for restricting the movement of the planetary gear 64 in the thrust direction, and meshing with the planetary gear 64. 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.
[0011]
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, cold forging, or the like. Moreover, as integral molding with a resin gear, it can shape | mold by insert molding etc.
Thus, by using a helical gear that can secure a contact area even if it is thinner than a flat tooth, even if the gear itself is thinned, the gear strength can be ensured and the reduction gear train can be made compact. Further, by using a helical gear with a large contact area for the first and second reduction gear trains that rotate at a relatively high speed, it is possible to reduce backlash and increase transmission efficiency. Further, by making the meshing of the helical gear portion metal (small gear) and resin (large gear), generation of heat due to wear, noise, and the like can be suppressed. Further, by making the third and fourth rows of reduction gears, which are relatively low speed and high torque, made of metal, the destruction of the gears can be suppressed.
[0012]
Next, the assembly procedure of 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 according to 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 and 36c and screwed into a lower hole 33c provided in the spacer 33, whereby the spacer 33, the first gear 34, the shaft 35 and the bearing 36 are integrated and further driven. 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 meshing between the first gear 34 and the small gear 32b, and the screw insertion hole 36d (bearing 36) and the fixing hole 33d ( The assembly is completed by inserting a screw from the spacer 33) and screwing it into a screw hole 32 c provided in the drive motor 32. The screw insertion hole 36d has a diameter larger than that of the screw head, and the fixing hole 33d on the screw insertion hole 36d side has a diameter larger than that of the screw head until halfway (position where the thickness is the same as the other fixing hole 33d). By setting the diameter so that the screw portion penetrates from the middle, two screws for fixing to the drive motor 32 can be shared.
By integrating the first stage of the reduction gear train into the drive motor 32 in this manner, shaft blurring can be suppressed and transmission efficiency can be increased.
[0013]
As shown in FIG. 7, the planetary gear assembly B is assembled 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 end portion of the shaft 63 a is mounted in the bearing recess 65 a provided in the bearing 65, and the small diameter cylindrical portion 63 c of the fastening spacer 63 b provided in the carrier 63 is provided in the bearing 65 in order to secure the operation region of the planetary gear 64. The carrier 63, the planetary gear 64, the bearing 65, and the internal gear 66 are integrated by being inserted into the through hole 65b and crimped (hereinafter, this integrated unit 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 convex portion 67e having substantially the same shape as a plurality of concave grooves 66a for preventing rotation formed at a predetermined interval on the outer periphery of the internal gear 66. A spacer 67 (see FIG. 8) is mounted on the internal gear 66, and the tolerance ring is inserted into the connecting hole 40a provided at the rear end of the rotating shaft 40 in a state where the output shaft 63d protrudes from the opening 67b of the spacer 67. By assembling the outer periphery of 62, the assembly of the planetary gear assembly B is completed. In addition, a ring-shaped magnet 61 (having two NS) formed in advance on the flange 40b of the rotary shaft 40 is integrated using a retaining ring or the like. A protective block 67c that protects 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.
[0014]
Next, the assembly procedure of the unit will be described with reference to FIG.
A self-tapping screw (not shown) is inserted into the mounting hole 70b of the rotation detection circuit 70 on which the Hall IC 70a for detecting the magnetic force of the magnet 34c is mounted, and fixed to the lower hole 31e of the mounting boss provided in the casing 31a. 31a and the rotation detection circuit 70 are integrated. Next, a self-tapping screw (not shown) is inserted into the 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 the screw is inserted into the lower hole 31f of the mounting boss provided in the casing 31a. The casing 31a and the area detection circuit 71 are integrated by fixing. The area detection circuit 71 is soldered with an energization wiring (not shown) to the drive motor 32, and a positive temperature coefficient thermistor 71d connected in series with one of the energization wirings is further soldered. . This positive characteristic thermistor is provided to prevent an overcurrent from flowing to the drive motor 32. Next, the drive motor assembly A is stored in the motor storage portion 31c provided at the lower end of the casing 31a, and a self-tapping screw (not shown) is inserted into the mounting hole 33f formed in the spacer 33 to provide the casing 31a. The casing 31a and the drive motor assembly A are integrated by screwing in the lower hole 31d of the mounting boss.
[0015]
Next, the projection 31r (see FIG. 8) provided on the cylindrical portion 31g of the planetary gear assembly B with the planetary gear assembly B is aligned with the concave groove 67a provided on the outer periphery of the spacer 67, and the protective block 67c of the spacer 67 is provided. Is inserted and fixed in the cylindrical portion 31g so that the outer shape of the casing and the inner wall of the casing 31a come into contact with each other. A through hole 31i is provided in the inner wall of the cylindrical portion 31g, and water intrusion from the through hole 31i is caused by the peripheral wall 31j of the through hole 31i and the O-ring 40c accommodated in the O-ring groove 40 provided in the rotating shaft 40. It is configured to prevent. Here, the reason why the casing 31a is attached using the spacer 67 is that the planetary gear mechanism itself needs to have roundness in terms of its function, and in order to attach this directly to the casing 31a, the roundness of the cylindrical portion 31g of the casing 31a is also required. Since the dimensional tolerance is severe and the yield is deteriorated, the cylindrical portion 31g of the casing 31a has a structure in which the manufacturing tolerance can be absorbed by the elastic deformation of the spacer 67 as a substantially point contact with the convex portion 67e of the spacer 67 and the convex line 31r of the casing 31a. It is for making manufacture of this easy.
[0016]
Next, paying attention to the meshing between the planetary gear 64 and the sun gear 38b, the third gear 38 is inserted into the planetary gear mechanism, and the meshing between the small gear 37b and the large gear 38a and the meshing between the large gear 37a and the small gear 34b are performed. Carefully insert and fix the second gear on 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 a self-tapping screw is inserted into the mounting hole 31n provided in the casing 31a. Then, the toilet seat electric opening / closing unit 30 is assembled by screwing into the lower hole 31p of the mounting boss provided in the casing 31b.
As shown in FIG. 8, two circles (Ca, Cb) formed by projection surfaces 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 are arranged. By arranging the shafts of the first gear 34 and the second gear 37 in the projection plane surrounded by the outer tangent lines (Lc, Ld), the electric opening / closing unit 30 can be designed compactly. Furthermore, in the present embodiment, the axes of the first gear 34 and the second gear 37 are within the projection plane surrounded by the horizontal lines (La, Lb) passing through the center of the two circles (Ca, Cb) and the circumscribed lines (Lc, Ld). Can be designed to be more compact. Instead of the horizontal lines (La, Lb), a perpendicular line passing through the center of each circle may be used with respect to a line connecting the centers of the two circles (Ca, Cb). In the present embodiment, this perpendicular line is also substantially horizontal, so it is not so different, but such a design is desirable when the reduction gear train is arranged in the horizontal direction.
[0017]
The toilet lid electric opening / closing unit 130 also has the same component configuration and assembly procedure as the toilet seat electric opening / closing unit 30, and therefore the description thereof is omitted except for the differences. The differences will be described below. The toilet seat electric opening / closing unit 30 and the toilet lid electric opening / closing unit 130 have a symmetrical configuration. As shown in FIGS. 2, 4, and 8, the output shaft 140 of the toilet lid electric opening / closing unit 130 is provided with a substantially rectangular connecting hole 141 into which the rotating shaft 50 is inserted and fixed in a non-rotatable manner. The casing 131a of the toilet lid electric opening / closing unit 130 is integrally provided with 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.
[0018]
Next, the assist unit 80 will be described with reference to FIGS.
The assist unit 80 includes a connecting shaft 81 that is non-rotatably connected to the rotating shaft 40 of the electric opening / closing unit 30, an assist spring 82 having one end 82 a fixed to the connecting shaft 81 in order to bias the toilet seat 12 in the opening direction, and an assist A connecting cover 83 fixed to the other end 82 b of the spring 82 and non-rotatably connected to the casing 11, a lid cover 84 surrounding the assist spring 82 together with the connecting cover 83, and an attaching / detaching lever for attaching / 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.
[0019]
A serration is formed at the distal end portion 81a of the connecting shaft 81 (support shaft of the toilet lid 13), and a large-diameter portion 81b for restricting the movement of the connecting shaft 81 in the thrust direction is formed at a substantially central portion. In addition, an O-ring groove 81c for sealing between the inner cylinder portion 84a of the lid cover 84 is formed, and an insertion for inserting one end into 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 inner cylinder portion 83a of the cover 83 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 portion.
[0020]
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 cylinder portion 83a of the connection cover 83. The The base portion of the support groove 83b forms a prevention wall 83d that slightly increases the thickness of the bottom 83c and prevents the other end 82b of the assist spring 82 from rotating. In addition, a restriction protrusion 83e that is engaged with an engagement protrusion 31q formed integrally with the outer casing 31a of the toilet seat electric opening / closing unit 30 to restrict the rotation is formed at the rear end of the connection cover 83. A stopper 83f that restricts the rotation of the detachable lever is formed at one place on the peripheral edge of 83e. Further, a thin diameter portion 83h having a slightly narrowed diameter is formed in the outer cylinder portion 83g.
A welding rib 83i is formed on the entire periphery of the opening end of the connection cover 83, and the lid cover 84 is integrated by ultrasonic welding or the like.
[0021]
The detachable lever 85 is formed of a support cylinder 85a with the upper part cut out and a detachable cylinder 85b with the lower part cut out, and a ring-shaped rib 85c with a slightly increased thickness on the inside and outside is formed therebetween. The inner diameter of the ring-shaped rib 85c is set to be substantially the same as the small diameter portion 83h and smaller than the outer cylindrical portion 83g. In addition, a gripping projection 85d is formed on the detachable cylinder 85b.
The fixing member 86 has a connection opening 86a having substantially the same shape as the outer shape of the connection shaft 81, protrusions 86b provided at predetermined intervals along the outer periphery in order to be non-rotatably fixed to the toilet seat 12, and a substantially L-shaped connection. A crank 86c is formed. Further, the connecting crank 86c is formed with a lower hole 86d for fastening screws and a stopper 86e for restricting the movement of the assist unit 80 (excluding the fixing member 86) in the thrust direction.
[0022]
Next, the assembly procedure of the assist unit 80 will be described. O-rings are collected in the O-ring grooves 81 c and 81 e of the connecting shaft 81, one end 82 a of the assist spring 82 is inserted into the insertion hole 81 d of the connecting shaft 81, and the other end 82 b is engaged with the support groove 83 b of the connecting cover 83. Thus, 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. Thereby, 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 cover cover 84, and the cover cover is moved with the back side of the cover cover 84 and the welding rib 83i of the connection cover 83 in contact with each other. The connecting shaft 81, the assist spring 82, the connecting cover 83, and the lid cover 84 are integrated by sonic vibration. 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 on the outer cylindrical portion 83g and inserts into the small-diameter portion 83h. Then, the connecting cover 83 and the attachment / detachment lever 85 are integrated, and the attachment / detachment lever 85 is restricted from coming off in the thrust direction by the outer tube portion 83g and the ring-shaped rib 85c. Next, the assist unit 80 is integrated by inserting the connecting shaft 81 into the connecting opening 86 a of the fixing member 86.
[0023]
The connecting shaft 81 of the assist unit 80 is inserted into the connecting hole 12d (see FIG. 1) of the toilet seat 12, and the assist unit 80 is inserted into the connecting portion 12a of the toilet seat 12, and the lower hole 86d of the fixing member 86 and The toilet seat 12 and the assist unit 80 are integrated by fastening the screw hole 12c (see FIG. 1) of the toilet seat 12 with a self-tapping screw. 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 connecting cover 83. Similarly, the attachment / detachment lever 85 has a small clearance between the connecting crank 86c and the outer cylinder portion 83g, and the attachment / detachment lever 85 cannot be deformed outward so as to get over the outer cylinder portion 83g.
[0024]
Next, the tolerance ring 62 will be described with reference to the principle diagram of FIG. As shown in the drawing, the tolerance ring 62 has a ring shape having a wave-shaped portion. Each wave acts as a spring, and its acting force is proportional to the amount of deformation of the wave. Force required for assembly is AF, radial force is RL (N), friction coefficient is μ, number of waves is n, wave deformation is c (mm), spring constant is K (N / mm), 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, it is determined by experiment etc. how much torque is applied to the rotating shafts 40 and 140 at normal times. The shape of the tolerance ring 62 is selected according to the torque.
When torque more than this set torque is generated on the rotating shaft 40, the corrugated portion 62a of the tolerance ring 62 bites into the connecting hole of the rotating shafts 40, 140 and is fixed, and the ring-shaped edge 62b of the tolerance ring is The outer periphery of the output shaft 63d of the carrier 63 is slid, and the excess of the set torque or more is not applied to the inside of the electric opening / closing units 30, 130, so that the gears can be prevented from being damaged.
[0025]
A sectional view of the drive motor 32 is shown in FIG. As shown in the figure, the shaft of the drive motor 32 penetrates the inside of the motor, the diameter thereof is relatively thick inside, and the exposed portion has a small diameter. The reason why the tip 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. Although it is conceivable that the shaft itself has a small diameter, if the shaft is thin relative to the shaft length, the shaft runout of the drive motor 32 increases, so the shaft itself is not made small and the small gear 32b is attached. Only the portion to be cut is made a small diameter.
[0026]
Next, the operation of the electric opening / closing device for the toilet seat or toilet lid will be described.
FIG. 12 is a control block diagram of the toilet seat device of the toilet seat or toilet lid electric opening and closing device. When a toilet lid opening switch (not shown) provided on a remote control or the like is detected by a human body detection sensor, the drive motor 32 in the toilet lid electric opening / closing unit 130 is energized, and a reduction gear train (small gear 32b, first gear) 34, the second gear 37, the third gear 38, the planetary gear mechanism), the tolerance ring 62, and the output shaft 140 transmit the rotation of the drive motor 32 to the rotary shaft 50, thereby opening the toilet lid 13. The toilet lid 13 is closed by the magnet 61 and the two Hall ICs 71a and 71b provided in the area detection circuit 71 (20 degrees or less), a rotation area (20 degrees to 80 degrees), and an open area (80 degrees to 110 degrees). Degree) and an abnormal area (110 degrees or more) are detected, and energization control (or short-circuit control) to the drive motor 32 according to each area is performed. Further, by detecting the rotation of the drive motor 32 by the magnet 34c and the Hall IC 70a provided in the rotation detection circuit 70, it is possible to detect the position in the area relatively accurately and perform finer energization control. .
[0027]
Further, when the toilet seat opening switch provided on the remote controller or the like is operated, the drive motor 32 in the electric opening / closing unit 30 for the toilet seat is energized, and the reduction gear train (small gear 32b, first gear 34, second gear 37, third gear). 38, the planetary gear mechanism) and the tolerance ring 62, the rotation of the drive motor 32 is transmitted to the rotary shaft 40, and the toilet seat 12 is opened.
Note that the position of the toilet seat 12 is detected by the rotation detection circuit 70 and the area detection circuit 71 in the same manner as the toilet lid electric opening / closing unit 130, and the energization control (or short control) of the drive motor 32 is performed according to the position.
[0028]
Since the toilet seat 12 is provided with a heater for heating and is relatively heavy, 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 twisted when the toilet seat 12 is closed.
Therefore, when the toilet seat 12 is closed, a torque on the opening side can be generated, so that the toilet seat 12 can be lifted even with substantially the same structure as the toilet lid electric opening / closing unit 130.
[0029]
One end 82a of the assist spring 82 is integrated with the casing 11 by engagement of the restricting projection 83e of the connecting case 83 and the engaging projection 31q of the toilet seat electric opening / closing unit 30 attached to the casing 11, and the assist spring 82 is integrated. The other end 82 b is integrated with the toilet seat 12 via a connecting shaft 81 and a fixing member 86.
When a toilet seat closing switch (not shown) provided on a remote controller or the like is operated, the drive motor 32 is energized on the opposite side to the opening operation, and the position of the toilet seat 12 detected by the rotation detection circuit 70 and the area detection circuit 71 is determined. Thus, energization control (or short control) is performed.
When the separation detection by a human body detection sensor (not shown) or a toilet lid closing switch (not shown) provided on a remote controller or the like is operated, the toilet lid electric opening / closing unit 130 is controlled similarly to the toilet seat 12, and the toilet lid 13 may be closed. it can.
[0030]
Next, the structure of the toilet seat loose closing device 230 will be described with reference to FIGS. Slow closing unit 231 of the slow closure device 230 for the toilet seat is oil damper type, the holder 232 on the disc for attaching the magnet 234 for position detection, a support base 233 which slow closure unit 231 inserts fixed magnet 23 4 of the magnetic force It comprises a position detection board 235 on which a Hall IC 235a serving as a magnetic detection means for detecting this is mounted, and a closing cap 236.
The oil damper type slow closing unit 231 includes a cylinder 231a, a rotating shaft 231b, a check valve, and the like. The cylinder 231a has a partition wall on the inner wall thereof, and the rotating shaft 231b penetrates inside the rotating shaft 231b. Oil is filled in the chamber 231c divided into two by the partition wall. Rotating shaft 231 b has a wing portion projecting radially, and further bisected the chamber 231c to the pressurization chamber decompression chamber by the check valve and the wing portion. The blade portion has a communication passage that allows the pressurizing chamber and the decompression chamber to communicate with each other, and a check valve is provided in the communication passage, and the rotary shaft 231b rotates so that the wing portion and the check valve are mutually connected. The position is changed, and the check valve controls the amount of oil flowing from the pressurizing chamber to the decompression chamber to suppress the rotational speed, so that the toilet seat 12 is gently closed. On the outer periphery of the cylinder 231a, there is provided a rotation restricting projection 231d for suppressing the rotation of the unit 231 when inserted into the support base 233. The rotary shaft 231b is provided with an insertion hole 231e having a substantially oval cross section, and an output shaft 240 having an oval cross section is inserted and fixed in the insertion hole 231e so as not to rotate.
[0031]
An insertion hole 232a is provided in the center of the holder 232, and the rotation shaft 231b of the gentle closing unit 231 is inserted and fixed in the insertion hole 232a so as not to rotate by serration or D cut.
The support base 233 is provided with a unit attachment part 233a and a board attachment part 233b. A terminal part of the unit attachment part 233a is provided with a restriction recess 233c into which a restriction projection 231d is inserted. The outer shape is substantially the same as that of the electric opening / closing unit 30 for the toilet seat, and both the electric opening / closing unit 30 and the slow closing device 230 are configured to be attached to the casing 11 with the same mounting structure.
The loosely-closed unit 231 is inserted and fixed in the unit mounting portion 233a, the Hall IC substrate 235a is inserted and fixed in the substrate mounting portion 233b, and the opening portion of the substrate mounting portion 233b is closed with a cap 236. For this reason, water does not enter the substrate mounting portion 233b. Since it is configured as described above, the oil damper type slow closing device and the Hall IC substrate 235a can be easily detached from the support base 233.
[0032]
The description of the toilet lid gently closing device 330 having the same structure as the toilet seat slowly closing device 230 is omitted. The outer shape of the support lid 333 of the toilet lid loosely closing device is substantially the same as that of the toilet lid electric opening and closing unit 130, and both the electric opening and closing unit 130 and the loosely closing device 330 are attached to the casing 11 with the same mounting structure. It is configured to be installed.
[0033]
Next, another embodiment of the toilet seat gentle closing device 230 is shown in FIG. 14 is different from the first embodiment in that the output shaft 240 is non-rotatably inserted and fixed in the insertion hole 232a in the center of the holder 232. Further, it is attached to the support base 233 by a substantially C-shaped retaining ring 237 and a groove 233d provided in the inner periphery of the unit attachment portion 233a of the support base 233. In the case of the second embodiment, there is no inconvenience that the holder 232 is attached in the wrong direction and the toilet seat position is erroneously detected as a result of replacement of the slow closing unit 231.
[0034]
FIG. 15 is a part of a circuit diagram of the toilet seat device control board on the main CPU side. The circuit that is the subject of the present invention is composed of a CPU, chip jumpers (CJ3, CJ4, CJ5), resistors, transistors, and connectors 160. When the toilet seat / toilet lid electric switchgear is attached to the casing 11, the connector 151 of the drive circuit 150 is inserted into the connector 160, the chip jumpers CJ3 and CJ5 are mounted on the circuit, and CJ4 is not mounted and the communication of the main CPU. The operation described above can be performed by enabling the port and enabling communication between the main CPU and the drive circuit 150. Further, when the toilet seat / toilet lid closing device is attached to the casing 11, the connector 251 of the position detection circuits 235 and 335 is inserted into the connector 160, and only the chip jumper CJ4 is mounted on the circuit, and CJ3 and CJ5 are not yet installed. By mounting, the SCAN signal output port of the main CPU can be used, and the position of the seat lid can be periodically scanned and detected.
In this way, the meaning of the PinA, B, C of the connector 160 differs between the toilet seat device provided with the toilet seat toilet lid electric opening / closing device and the toilet seat device provided with the gentle closing device, so that the chip jumper CJ3, By changing the circuit configuration using CJ4 and CJ5, the meaning of the connector 160 is changed between the toilet seat device having the toilet seat toilet lid electric opening / closing device and the toilet seat device having the loosely-closing device.
[0035]
That is, PinA of the connector 160 has a meaning of a communication line for communication between the main CPU and the drive circuit 150 in the toilet seat device including the toilet seat toilet lid electric opening / closing device. Communication is possible by connecting to the I / O communication port of the CPU. In the toilet seat device equipped with the toilet seat toilet lid loosely closing device, the analog voltage output from the toilet seat toilet lid position detection circuits 235 and 335 is transmitted, so the chip jumper CJ5 is not mounted and only the AD input port of the main CPU is connected. By doing so, the voltage value is read.
[0036]
PinB of the connector 160 has the meaning of the GND line regardless of the toilet seat toilet lid electric opening / closing device and the toilet seat toilet lid gentle closing device, so there is no difference in the circuit.
PinC of the connector 160 has a meaning for supplying 5V to the toilet seat toilet lid electric opening / closing control board in the toilet seat device provided with the toilet seat toilet lid electric opening / closing device. This connects to the 5V line of the main CPU. Since the toilet seat device having the toilet seat toilet lid loosely closing device has the meaning of outputting a control SCAN signal from the main CPU, the chip jumper CJ3 is not mounted and the chip jumper CJ4 is mounted to the SCAN port of the main CPU. Connecting.
[0037]
By sharing the connector 160 between the toilet seat device equipped with the toilet seat toilet lid electric opening and closing device and the toilet seat device equipped with the toilet seat toilet lid loosely closing device, one connector can be reduced, and the size of the toilet seat device control board can be reduced. It is possible to reduce the size and to obtain an inexpensive toilet seat device.
[Brief description of the drawings]
FIG. 1 is a perspective view of a toilet seat or an electric opening / closing device of a toilet lid or a toilet seat device 10 incorporating a toilet seat or a gentle closure device of the toilet lid of the present invention. Or the exploded perspective view for demonstrating the attachment position of the gentle closure apparatus of a toilet lid. FIG. 3 is sectional drawing of the toilet seat apparatus 10 incorporating the toilet seat electric switchgear 30. FIG. FIG. 5 is an exploded perspective view of the toilet seat electric 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. FIG. 9 is an exploded perspective view of the assist unit 80. FIG. 10 is a principle view of the tolerance ring 62. FIG. 11 is a cross-sectional view of the drive motor 32. FIG. ] Electric switch for toilet seat or toilet lid FIG. 13 is a cross-sectional view of a toilet seat loose-closing device. FIG. 14 is a cross-sectional view of another embodiment of the toilet-seat loose-closing device. FIG. 15 is a main CPU side toilet seat device control board. Part of the circuit diagram [Explanation of symbols]
10 ... toilet seat device, 11 ... casing, 12 ... toilet seat, 13 ... toilet lid,
30 ... Electric switch for toilet seat, 130 ... Electric switch for toilet lid,
31 ... Electric open / close casing, 32 ... Drive motor, 33 ... Spacer,
34 ... 1st gear, 35 ... 1st gear shaft, 36 ... 1st 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 (1)

An oil damper type loosely-closing unit that controls opening and closing of the toilet seat or toilet lid;
A permanent magnet that is non-rotatably attached to the rotation shaft of the oil damper type loosely-closed unit;
A support base having magnetic detection means for detecting the position of the permanent magnet in a non-contact manner while fitting the oil damper type slow closing unit ;
It is composed of an output shaft that is non-rotatably attached to the rotation shaft of the oil damper type loosely-closed unit,
A toilet seat or toilet lid position detection device , wherein the permanent magnet and the output shaft are detachable from the oil damper type slow closing unit .

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