Electric opening and closing device and toilet seat device

Abstract

To properly detect a rotation speed of a motor in an electric opening / closing device by a compact constitution with suppressed cost.SOLUTION: An electric opening / closing device for opening / closing a toilet seat or a toilet lid includes: a motor; a speed reduction mechanism having multiple gears including a gear engaging with an output gear attached to a rotating shaft of the motor, and for transmitting the torque of the motor to the toilet seat or the toilet lid; a multipolar magnet plate attached to the rotating shaft, in which a different magnetic poles different in a circumferential direction are provided alternately; and a magnetism detection element arranged on the radial direction outside to the multipolar magnet plate, and on the furthermore radial direction inside than an outer peripheral surface of the motor.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to an electric opening and closing device for opening and closing a toilet seat or a toilet lid, and a toilet seat apparatus. [Background technology]

[0002] Conventionally, as this type of electric opening and closing device, a device that includes a motor and a reduction mechanism and can open and close the toilet seat and toilet lid of a toilet seat device by driving the motor, and detects the position of the output shaft of the motor has been proposed. For example, Patent Document 1 describes a device in which a contact-type potentiometer is attached as a position detection sensor, the opening and closing angle of the toilet seat is detected by the potentiometer, and the motor is feedback-controlled to perform the opening and closing operation. Patent Document 2 describes a device that includes a planetary gear mechanism as a reduction mechanism, in which a circular magnet is attached to a first sun gear that is attached when the motor is output, and the rotational position (rotational speed) is detected by a magnetic detector element such as a Hall IC. Patent Document 3 also reads that a circular magnet, a magnetic detector element, etc. are provided on the opposite side of the motor's output shaft. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] WO2003 / 065866A1 [Patent Document 2] JP 2017-6352 A [Patent Document 3] JP 2010-142340 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a configuration using a contact-type potentiometer as in Patent Document 1, the sensor may not function properly due to problems such as wear of the contacts, increased contact load, and a humid environment around the toilet seat. On the other hand, in a configuration that detects magnetism as in Patent Documents 2 and 3, such problems are unlikely to occur. However, in the configuration of Patent Document 2 in which a circular magnet is integrated into the first sun gear, the workability of the first sun gear may become difficult, which may lead to an increase in costs. In addition, in a configuration in which a circular magnet and a magnetic detector element are arranged so as to overlap in the axial direction on the side opposite the output shaft of the motor as in Patent Document 3, the electric opening and closing device may become longer in the axial direction and larger in size.

[0005] A main object of the present invention is to appropriately detect the rotation speed of a motor in an electric opening / closing device with a compact configuration that reduces costs. [Means for solving the problem]

[0006] In order to achieve the above-mentioned main object, the present invention adopts the following means.

[0007] The electric opening and closing device of the present invention is An electric opening / closing device for opening and closing a toilet seat or a toilet lid, A motor; a reduction gear mechanism having a plurality of gears including a gear that meshes with an output gear attached to a rotating shaft of the motor, and transmitting the torque of the motor to the toilet seat or the toilet lid; a multi-pole magnet plate attached to the rotating shaft and having different magnetic poles arranged alternately in a circumferential direction; a magnetic detector element disposed radially outward from the multi-pole magnet plate and radially inward from an outer circumferential surface of the motor; The gist of the project is to provide the following:

[0008] The electric opening / closing device of the present invention includes a multi-pole magnet plate attached to the rotating shaft of a motor and having different magnetic poles arranged alternately in the circumferential direction, and a magnetic detector element arranged radially outside the multi-pole magnet plate and radially inside the outer circumferential surface of the motor. Therefore, the axial length of the electric opening / closing device can be reduced compared to a case in which the magnetic detector element is arranged so as to overlap the multi-pole magnet plate in the axial direction of the motor. In addition, since the magnetic detector element is arranged radially inside the outer circumferential surface of the motor, it is possible to prevent the electric opening / closing device from expanding in the radial direction. Therefore, the rotation speed of the motor in the electric opening / closing device can be appropriately detected with a compact configuration that suppresses costs.

[0009] In the electric opening / closing device of the present invention, the multi-pole magnet plate may be attached to the rotating shaft between the motor and the output gear. In this way, it is not necessary to extend the rotating shaft to the opposite side to the output gear (reduction mechanism) in order to attach the multi-pole magnet plate, so that the axial length of the electric opening / closing device can be further reduced to make it more compact.

[0010] In the electric opening / closing device of the present invention, the motor and the reduction mechanism are arranged on the same axis, and a first board portion extending between the motor and the reduction mechanism and a second board portion extending parallel to the axial direction of the motor are provided, which are continuous to be perpendicular to each other, and the board may be configured such that the magnetic detector element is mounted on the first board portion, and a connector for electrical connection with the outside is attached to the second board portion and a lead wire to the motor is connected. In this way, it is not necessary to separately provide a board for the magnetic detector element and a board for the connector and the lead wire, so that the number of parts can be reduced. In addition, by making the board L-shaped with the first board portion and the second board portion perpendicular to each other and extending the second board portion parallel to the axial direction of the motor, it is possible to prevent the board from protruding significantly in the radial direction of the motor. Therefore, the electric opening / closing device can be further configured compactly.

[0011] In the electric opening and closing device of the present invention, the reduction mechanism may have a cylindrical case that houses the gear and a cover that covers an opening at one end of the case, the cover has an insertion hole through which the output gear can be inserted and a support part that can support the first board part formed on an outer surface, and the first board part may be supported by the support part while being sandwiched between the motor or a member attached to the motor and the cover. In this way, screws or the like for fixing the first board part are not required, and assembling can be improved. Also, the cover can be used both to cover the opening of the case and to support the first board part.

[0012] The toilet seat device of the present invention comprises a toilet seat and a toilet lid, and a main body that houses at least one of the electric opening and closing devices described above, and at least one of the toilet seat and the toilet lid is opened and closed by the electric opening and closing device.

[0013] The toilet seat apparatus of the present invention accommodates any one of the electric opening and closing devices described above in the main body, and thus achieves the effect of the electric opening and closing device, i.e., the effect of enabling detection of the motor rotation speed in the electric opening and closing device with a compact configuration. This makes it possible to automatically open and close at least one of the toilet seat and the toilet lid while preventing the main body of the toilet seat apparatus from becoming too large. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a configuration diagram of a toilet seat device 10. [Diagram 2] FIG. 2 is a diagram showing the arrangement of each device in the toilet seat device main body 20. [Diagram 3] FIG. 2 is a configuration diagram of the toilet seat device 10 as viewed from below. [Figure 4] FIG. 2 is a configuration diagram of an electric opening / closing device 30. [Diagram 5] FIG. 2 is a configuration diagram of an electric opening / closing device 30. [Figure 6] 2 is an internal configuration diagram of an electric opening / closing device 30. FIG. [Figure 7] FIG. 2 is an exploded perspective view of the electric opening / closing device 30. [Figure 8]FIG. 4 is a configuration diagram of a motor 43 with each part assembled. [Figure 9] FIG. 2 is a configuration diagram of a gear unit 50 as viewed from the input side. [Figure 10] FIG. 2 is a configuration diagram of a gear unit 50 as viewed from the output side. [Figure 11] 2 is an explanatory diagram showing the positional relationship between a multi-pole magnet plate 61 and a substrate 64 of a motor rotation speed detection unit 60. FIG. [Figure 12] 4 is an explanatory diagram showing the positional relationship between a board 64 of a motor rotation speed detection unit 60 and a board 74 of an output shaft position detection unit 70. FIG. [Figure 13] 10 is an explanatory diagram showing an example of how parts are assembled to a motor 43. FIG. [Figure 14] 4 is an explanatory diagram showing an example of how parts are assembled into a gear case 51. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Next, an embodiment of the present invention will be described.

[0016] Fig. 1 is a configuration diagram of a toilet seat device 10, Fig. 2 is a configuration diagram of the arrangement of each unit inside a toilet seat device main body 20, and Fig. 3 is a configuration diagram of the toilet seat device 10 viewed from below. As shown in Fig. 1, the toilet seat device 10 has a base plate 21 (see Fig. 2) attached to the upper surface of a toilet bowl 1, and is equipped with a toilet seat device main body 20, a toilet seat 14 and a toilet lid 16 supported so as to be openable and closable relative to the toilet seat device main body 20, and an operation panel 18 that allows the user to perform various operations.

[0017] As shown in FIG. 2, the toilet seat device main body 20 includes a private parts washing device 22, a heat exchange device 24, a deodorizing device 26, an electric opening / closing device 30 (30A, 30B), and a control device 28. The private parts washing device 22 includes a washing nozzle 22a (see FIG. 1) for washing the private parts of the user, a moving mechanism for moving the washing nozzle 22a forward and backward, and a switching valve for switching the flow path of the washing water. The heat exchange device 24 includes a hot water heater for heating the washing water. The deodorizing device 26 includes a fan for sucking in odors and a filter for removing odors. As the electric opening / closing device 30, two electric opening / closing devices 30A, 30B of the same configuration are arranged. The electric opening / closing device 30A opens and closes the toilet seat 14, and the electric opening / closing device 30B opens and closes the toilet lid 16. The control device 28 controls the operation of each device based on an operation signal from the operation panel 18. In addition, in FIG. 3, among the internal configuration of the toilet seat device main body 20, only the electric opening and closing devices 30A, 30B are shown.

[0018] The details of the configuration of the electric opening / closing device 30 will be described below. The electric opening / closing devices 30A and 30B have the same configuration, so they will be described without distinction. Figs. 4 and 5 are configuration diagrams of the electric opening / closing device 30, Fig. 6 is an internal configuration diagram of the electric opening / closing device 30, and Fig. 7 is an exploded perspective view of the electric opening / closing device 30. Fig. 8 is a configuration diagram of the motor 43 to which each part is assembled, Fig. 9 is a configuration diagram of the gear unit 50 viewed from the input side, and Fig. 10 is a configuration diagram of the gear unit 50 viewed from the output side. Fig. 12 is an explanatory diagram showing the positional relationship between the multi-pole magnet plate 61 and the board 64 of the motor rotation speed detection unit 60, and Fig. 13 is an explanatory diagram showing the positional relationship between the board 64 of the motor rotation speed detection unit 60 and the board 74 of the output shaft position detection unit 70.

[0019] 4 to 7, the electric opening / closing device 30 includes a motor unit 40, a gear unit 50, and an output shaft 36 that rotates when torque from the motor 43 of the motor unit 40 is transmitted via the gear unit 50. In the electric opening / closing device 30, the motor unit 40 (motor 43), the gear unit 50, and the output shaft 36 are coaxially arranged. The electric opening / closing device 30 also includes a motor rotation speed detector 60 that detects the rotation speed of the motor 43, an output shaft position detector 70 that detects the rotation position of the output shaft 36, and a connector 38 that electrically connects the detectors 60, 70 and the motor 43 to the control device 28.

[0020] In addition to the motor 43, the motor unit 40 includes a motor case 41 that houses the motor 43, and a bracket 45 that is attached to an end face of the motor 43. The motor case 41 is provided with mounting holes 41a as shown in Figs. 4 to 6, and screws (not shown) are inserted into the mounting holes 41a and fastened to screw holes in the toilet seat device main body 20, thereby fixing the motor unit 40 (electric opening and closing device 30) in the toilet seat device main body 20 (see Fig. 3). In this state, the connector 38 is exposed downward (upward in Fig. 3), so there is no need to use a connector with a connector terminal bent at a right angle as a connector to be connected to the connector 38, and the connectors can be easily connected to each other.

[0021] The gear unit 50 includes a cylindrical gear case 51 that houses a plurality of gears and the like, an input side cover 57 that covers an opening on the input side (motor side) of the gear case 51, and an output side cover 59 that covers an opening on the output side (output shaft 36 side) of the gear case 51. The gear case 51 is connected to the motor case 41 (motor 43) via a bracket 45. The gear unit 50 houses a first planetary gear mechanism 52, a second planetary gear mechanism 53, a third planetary gear mechanism 54, and the like within the gear case 51.

[0022] The first planetary gear mechanism 52 has a sun gear 52a which is an external gear attached to the rotating shaft 44 of the motor 43 as an output gear, a ring gear 52b (see FIG. 14) which is an internal gear and is arranged in a gear case 51 concentrically with the sun gear 52a, a plurality of pinion gears 52c which mesh with the sun gear 52a and the ring gear 52b, and a carrier 52d which holds the plurality of pinion gears 52c. An insertion hole (center hole) 57a through which the sun gear 52a attached to the rotating shaft 44 can be inserted is formed in the input side cover 57. The second planetary gear mechanism 53 has a sun gear 53a of an external gear connected to a carrier 52d of the first planetary gear mechanism 52 via a coil spring 55, a ring gear (not shown) of an internal gear arranged in the gear case 51 concentrically with the sun gear 53a, a plurality of pinion gears 53c meshing with the sun gear 53a and the ring gear, and a carrier 53d that holds the plurality of pinion gears 53c. The third planetary gear mechanism 54 has a sun gear 54a of an external gear formed integrally with the carrier 53d of the second planetary gear mechanism 53, a ring gear 54b of an internal gear arranged in the gear case 51 concentrically with the sun gear 54a, a plurality of pinion gears 54c meshing with the sun gear 54a and the ring gear 54b, and a carrier 54d that holds the plurality of pinion gears 54c. A connecting shaft 56 is formed on the carrier 54d and connected to the output shaft 36 by spline fitting. An insertion hole (center hole) 59a through which the connecting shaft 56 can be inserted is formed on the output side cover 59. In this manner, the gear unit 50 transmits torque from the motor 43 to the output shaft 36 via the first to third planetary gear mechanisms 52 to 54.

[0023] The output shaft 36 is, for example, a shaft with a substantially rectangular cross section whose short sides are curved in an arc shape, and is loosely fitted into a fitting hole formed in the toilet seat 14 or toilet lid 16. When forward torque of the motor 43 is transmitted to the output shaft 36, the output shaft 36 rotates in a direction to open the toilet seat 14 or toilet lid 16, and when reverse torque of the motor 43 is transmitted to the output shaft 36, the output shaft 36 rotates in a direction to close the toilet seat 14 or toilet lid 16. In addition, a magnet housing portion 37 that houses a two-pole magnet (not shown) is provided on the base end side of the output shaft 36. This magnet housing portion 37 is located away from the output shaft position detection portion 70 (see FIG. 5) or close to the output shaft position detection portion 70 (see FIG. 6) depending on whether the rotational position (rotational position) of the output shaft 36 is the fully open position or the fully closed position of the toilet seat 14 or toilet lid 16.

[0024] The motor rotation speed detection unit 60 is configured as a magnetic encoder, and includes a multi-pole magnet plate 61, a support plate 62, a detection element (Hall IC) 63, and a substrate 64. The multi-pole magnet plate 61 is an annular plate formed so that N poles and S poles alternate in the circumferential direction. The support plate 62 is a disk formed with an outer diameter corresponding to the inner diameter of the multi-pole magnet plate 61, and the multi-pole magnet plate 61 is attached to the outer periphery by, for example, heat crimping. In addition, the support plate 62 has a center hole attached to the rotating shaft 44 of the motor 43 by press-fitting or the like, and is fixed to the rotating shaft 44. Therefore, the multi-pole magnet plate 61 rotates integrally with the rotating shaft 44 of the motor 43. In addition, the multi-pole magnet plate 61 formed in an annular shape is attached to the circular support plate 62 and fixed to the rotating shaft 44, so that it is possible to prevent the processability of the multi-pole magnet plate 61 and the support plate 62 from becoming difficult and to facilitate assembly. 8, the detector element 63 is disposed at a radially outer position with respect to the multi-pole magnet plate 61 and radially inner than the outer circumferential surface of the motor 43. The detector element 63 detects a change in the magnetic field caused by the rotation of the multi-pole magnet plate 61 and outputs a detection signal.

[0025] As shown in FIG. 11, the board 64 has a first board portion 64a and a second board portion 64b, each of which is substantially rectangular. The first board portion 64a and the second board portion 64b are continuous so as to be perpendicular to each other, and the board 64 is substantially L-shaped when viewed from above. The first board portion 64a is equipped with a detector element 63. On the other hand, the second board portion 64b has a connector 38 attached to its lower surface. Therefore, when the electric opening / closing device 30 is attached to the toilet seat device main body 20, the connector 38 faces downward (upward in FIG. 3) as described above. In addition, the second board portion 64b is also equipped with lead wires 48 and the like that are connected to the terminals 43a of the motor 43.

[0026] Here, the input side cover 57 of the gear unit 50 is formed with a support portion 58 for supporting the first board portion 64a below the insertion hole 57a, and the gear case 51 is formed with a support portion 51c for supporting the second board portion 64b. The support portion 58 and the support portion 51c are formed so that the support surfaces supporting the board 64 are at the same height, and support the board 64 horizontally. The input side cover 57 is formed with a peripheral wall portion 57b erected from the outer periphery toward the motor 43 side, and a cutout portion 57c is formed in a part of the peripheral wall portion 57b, the cutout portion 57c being a shape in which a predetermined range including a portion at the same height as the support portion 58 is partially cut out. The first board portion 64a of the board 64 extends from the cutout portion 57c into the peripheral wall portion 57b and is supported by the support portion 58, and the second board portion 64b is supported by the support portion 51c.

[0027] The output shaft position detection unit 70 includes a detection element (Hall IC) 72 that detects the magnetism of the magnet in the magnet housing 37 of the output shaft 36, a substrate 74 on which the detection element is mounted, and a lead wire 76 extending from the substrate 74. The detection element 72 outputs a different detection signal depending on whether the magnet (magnet housing 37) is located close to the output shaft position detection unit 70 or located away from the output shaft position detection unit 70 due to the rotation of the output shaft 36. In other words, the output shaft position detection unit 70 is configured as a position sensor that outputs a different detection signal depending on whether the rotation position of the output shaft 36 is the toilet seat 14 or the toilet lid 16 open or closed. The output shaft position detection unit 70 is not limited to a magnetic detection type and may be a sensor of another type.

[0028] 12, the lead wire 76 extending from the board 74 is connected to the board 64 (see dashed line). Here, a wiring space 51a is formed in the gear case 51 of the gear unit 50. The wiring space 51a is formed so as to penetrate a corner of the gear case 51 (the lower left corner in FIG. 10) along the longitudinal direction of the gear case 51 (the axial direction of the gear unit 50). The lead wire 76 passes through this wiring space 51a and is connected to the board 64. Note that the lead wire 76 is not shown in FIG. 11.

[0029] The control device 28 is equipped with a microcomputer (not shown) and outputs a control signal to the electric opening / closing device 30 (motor 43) to automatically open and close the toilet seat 14 and the toilet lid 16. The control device 28 also receives a detection signal from a motor rotation speed detection unit 60 to detect the rotation speed of the motor 43, and receives a detection signal from an output shaft position detection unit 70 to detect the rotation position of the output shaft 36 (open or closed state of the toilet seat 14 or toilet lid 16).

[0030] The electric opening / closing device 30 thus configured is assembled as follows. Fig. 13 is an explanatory diagram showing an example of how parts are assembled to the motor 43, and Fig. 14 is an explanatory diagram showing an example of how parts are assembled to the gear case 51. First, the bracket 45 is fixed to the end face of the motor 43 with the mounting screws 46 (Figs. 13(a) and 13(b)). Next, the support plate 62 to which the multi-pole magnet plate 61 is assembled is press-fitted and fixed to the rotating shaft 44 (Fig. 13(c)). Next, the sun gear 52a of the first planetary gear mechanism 52 is attached to the rotating shaft 44 (Fig. 13(d)).

[0031] Although not shown, an output side cover 59 is attached to the gear case 51, and the third planetary gear mechanism 54 and the second planetary gear mechanism 53 are assembled in this order. Next, the first planetary gear mechanism 52 (ring gear 52b, pinion gear 52c) is assembled (FIG. 14(a)). For convenience of illustration, the gear case 51 is oriented horizontally, but the gear case 51 may be assembled in an upright state (vertical orientation) with the input side facing upward. Next, the input side cover 57 is fitted into the gear case 51 (FIG. 14(b)). This prevents the pinion gear 52c from falling off. Next, the substrate 64 to which the detection element 63, the connector 38, and the lead wires 48 and 76 are attached is assembled to the gear case 51 so as to be supported by the supports 58 and 51c (FIG. 14(c)). As described above, the lead wire 76 is routed so as to pass through the wiring space 51a.

[0032] Next, the motor 43 (FIG. 13(d)) to which the various parts have been assembled is arranged so that the mounting holes 45a of the bracket 45 communicate with the screw holes 51b of the gear case 51 (FIG. 14(e)). Although not shown, in this state, the lead wires 48 are connected to the terminals 43a of the motor 43. In addition, in this state, the bracket 45 is positioned so as to cover the first board portion 64a of the board 64 (FIG. 14(d)). That is, the first board portion 64a is supported by the support portion 58 while being sandwiched between the input side cover 57 and the bracket 45. Then, the motor case 41 is placed over the motor 43, and the mounting screws 32 are passed through the mounting holes 45a of the bracket 45 and tightened into the screw holes 51b of the gear case 51 to fasten the motor case 41 and the gear case 51 together (FIG. 14(f)). Although not shown in the figures, the output shaft 36 is fitted onto the connecting shaft 56, and the end cover 34 (see Figs. 4 and 7) is attached to the gear case 51 with the mounting screws 33, completing the assembly of the electric opening / closing device 30. The circuit board 74 of the output shaft position detection unit 70 is supported in a sandwiched state between the gear case 51 and the end cover 34. In this way, the components are assembled by stacking them in order, which improves the ease of assembly.

[0033] The electric opening / closing device 30 described above includes a multi-pole magnet plate 61 attached to the rotating shaft 44 of the motor 43, and a detector element 63 disposed radially outside the multi-pole magnet plate 61 and radially inside the outer circumferential surface of the motor 43. Therefore, the axial length of the electric opening / closing device 30 can be reduced compared to a case in which the detector element 63 is disposed in the axial direction of the motor 43 relative to the multi-pole magnet plate 61. In addition, the detector element 63 is contained within the range of the outer diameter of the motor 43, and the electric opening / closing device 30 can be prevented from expanding in the radial direction. In addition, since the multi-pole magnet plate 61 is a member separate from the sun gear 52a, which is the output gear of the motor 43, an increase in cost due to difficulty in processing can be suppressed. Therefore, the rotation speed of the motor 43 in the electric opening / closing device 30 can be appropriately detected with a compact configuration that suppresses costs.

[0034] Moreover, the multi-pole magnet plate 61 is attached to the rotating shaft 44 between the motor 43 and the sun gear 52a, which is the output gear. Therefore, it is not necessary to extend the rotating shaft 44 to the side opposite the gear unit 50 in order to attach the multi-pole magnet plate 61, so that the axial length of the electric opening / closing device 30 can be further reduced, resulting in a compact configuration.

[0035] Moreover, the board 64 has the detector element 63 mounted on a first board portion 64a extending between the motor 43 (motor unit 40) and the gear unit 50, and the connector 38 is attached to a second board portion 64b extending parallel to the axial direction of the motor 43, and the lead wires 48, 76 are connected to the first board portion 64b. Therefore, it is not necessary to separately provide a board for the detector element 63 and a board for the connector 38 and the lead wires, so that the number of parts can be reduced. Moreover, by making the board 64 L-shaped and making the second board portion 64b extend parallel to the axial direction of the motor 43, it is possible to minimize the board installation space by preventing the board 64 from protruding significantly in the radial direction of the motor 43. Therefore, the electric opening / closing device 30 can be further compactly configured.

[0036] Furthermore, since the first substrate portion 64a is supported by the support portion 58 of the input side cover 57 while being sandwiched between the bracket 45 and the input side cover 57, screws or the like for fixing the first substrate portion 64a are not required, improving the ease of assembly. Furthermore, the input side cover 57 can be used both to cover the opening on the input side of the gear case 51 and to support the first substrate portion 64a.

[0037] In the above-described embodiment, the substrate 64 has the first substrate portion 64a and the second substrate portion 64b, but the present invention is not limited to this, and the first substrate portion 64a and the second substrate portion 64b may be separate substrates. Even in this case, the first substrate portion 64a may be supported by the support portion 58 while being sandwiched between the bracket 45 and the input side cover 57.

[0038] In the embodiment, the first board portion 64a is supported on the support portion 58 in a state where it is sandwiched between the bracket 45 and the input side cover 57, but this is not limited to the above and it may be supported on the support portion 58 in a state where it is sandwiched between the motor 43 and the input side cover 57. Alternatively, it is not limited to sandwiching the first board portion 64a and it may be fixed to the support portion 58 or the input side cover 57 by screws or the like. Also, the support portion 58 may be provided on the bracket 45 instead of the input side cover 57.

[0039] In the embodiment, the multi-pole magnet plate 61 is attached between the motor 43 and the output gear (sun gear 52a) on the rotating shaft 44, but the present invention is not limited to this and may be attached to the rotating shaft 44. For example, the rotating shaft 44 may be extended so as to protrude toward the terminal 43a, and the multi-pole magnet plate 61 may be attached to the terminal 43a side. Even in this case, the detection element 63 is disposed radially outward from the multi-pole magnet plate 61 and radially inward from the outer circumferential surface of the motor 43, thereby making it possible to configure the electric opening / closing device 30 compact.

[0040] In the embodiment, the gear unit 50 including three planetary gear mechanisms is exemplified, but the number of planetary gear mechanisms is not limited to three. In addition, the gear unit 50 is not limited to the planetary gear mechanisms, and may be configured with other gear mechanisms such as worm gears.

[0041] In the embodiment, the toilet seat apparatus 10 is equipped with an electric opening / closing device 30A for the toilet seat 14 and an electric opening / closing device 30B for the toilet lid 16, but the present invention is not limited to this, and at least one of the toilet seat 14 and the toilet lid 16 may be opened and closed by the electric opening / closing device 30. Also, the toilet seat apparatus 10 may not be equipped with the toilet lid 16, and only the toilet seat 14 may be opened and closed by the electric opening / closing device 30A.

[0042] The correspondence between the main elements of the embodiment and the main elements of the invention described in the section on means for solving the problem will be described. In the embodiment, the toilet seat 14 corresponds to the "toilet seat", the toilet lid 16 corresponds to the "toilet lid", the electric opening / closing device 30 (30A, 30B) corresponds to the "electric opening / closing device", the motor 32 corresponds to the "motor", the gear unit 50 corresponds to the "reduction mechanism", the multi-pole magnet plate 61 corresponds to the "multi-pole magnet plate", and the detector element 63 corresponds to the "magnetic detector element". The connector 38 corresponds to the "connector", and the lead wire 48 corresponds to the "lead wire". The input side cover 57 corresponds to the "cover", and the support portion 58 corresponds to the "support portion".

[0043] Note that the correspondence between the main elements of the embodiment and the main elements of the invention described in the Means for Solving the Problem column does not limit the elements of the invention described in the Means for Solving the Problem column, since the embodiment is an example for specifically explaining the form for implementing the invention described in the Means for Solving the Problem column. In other words, the interpretation of the invention described in the Means for Solving the Problem column should be made based on the description in that column, and the embodiment is merely a specific example of the invention described in the Means for Solving the Problem column.

[0044] The above describes the form for carrying out the present invention using an embodiment, but the present invention is not limited to such an embodiment in any way, and it goes without saying that the present invention can be carried out in various forms without departing from the gist of the present invention. [Industrial Applicability]

[0045] The present invention can be used in the manufacturing industries of electric opening and closing devices and toilet seat devices. [Explanation of symbols]

[0046] 1 toilet bowl, 10 toilet seat device, 14 toilet seat, 16 toilet lid, 18 operation panel, 20 toilet seat device body, 21 base plate, 22 local cleaning device, 22a cleaning nozzle, 24 heat exchange device, 26 deodorizing device, 28 control device, 30, 30A, 30B electric opening and closing device, 32, 33 mounting screw, 34 end cover, 36 output shaft, 37 magnet storage section, 38 connector, 40 motor unit, 41 motor case, 41a mounting hole, 43 motor, 43a terminal, 44 rotating shaft, 45 bracket, 45a mounting hole, 46 mounting screw, 48 lead wire, 50 gear unit, 51 gear case, 51a wiring space, 51b screw hole, 51c support section, 52 first planetary gear mechanism, 52a, 53a, 54a Sun gear, 52b, 54b ring gear, 52c, 53c, 54c pinion gear, 52d, 53d, 54d carrier, 53 second planetary gear mechanism, 54 third planetary gear mechanism, 55 coil spring, 56 connecting shaft, 57 input side cover, 57a, 59a insertion hole, 57b peripheral wall portion, 57c cutout portion, 58 support portion, 59 output side cover, 60 motor rotation speed detection portion, 61 multi-pole magnet plate, 62 support plate, 63 detection element (Hall IC), 64 board, 64a first board portion, 64b second board portion, 70 output shaft position detection portion, 72 detection element (Hall IC), 74 board, 76 lead wire.

Claims

1. An electric opening / closing device for opening and closing a toilet seat or a toilet lid, A motor; a reduction gear mechanism having a plurality of gears including a gear that meshes with an output gear attached to a rotating shaft of the motor, and transmitting the torque of the motor to the toilet seat or the toilet lid; a multi-pole magnet plate attached to the rotating shaft and having different magnetic poles arranged alternately in a circumferential direction; a magnetic detector element disposed radially outward from the multi-pole magnet plate and radially inward from an outer circumferential surface of the motor; Equipped with the multi-pole magnet plate is attached to the rotating shaft between the motor and the output gear, The motor and the reduction mechanism are arranged coaxially, a first substrate portion extending between the motor and the reduction mechanism and a second substrate portion extending parallel to an axial direction of the motor, the first substrate portion and the second substrate portion being continuous and perpendicular to each other; The substrate has the magnetic detector element mounted on the first substrate portion, and a connector for electrical connection with the outside attached to the second substrate portion and a lead wire connected to the motor. Electric switchgear.

2. The electric opening and closing device according to claim 1, the reduction mechanism includes a cylindrical case that is disposed coaxially with the motor and that houses the gear, and a cover that covers an opening of the case on the motor side in the axial direction, the cover is formed with an insertion hole through which the output gear can be inserted, and a support portion capable of supporting the first board portion is formed on a surface of the case facing the motor in an axial direction, The first substrate portion is supported by the support portion in a state where it is sandwiched between the motor or a member attached to the motor and the cover. Electric switchgear.

3. A toilet seat and a toilet cover; A main body that houses at least one electric opening / closing device according to claim 1 or 2; Equipped with At least one of the toilet seat and the toilet lid is opened and closed by the electric opening and closing device. Toilet seat device.

Images