JP2009254116A - Electromagnetic induction type power feeding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a cost and hardly cause a fault in electromagnetic induction type heated toilet seat equipment which feeds power from a toilet seat support to a heated toilet seat by mutual induction occurring between a primary coil on the toilet seat support side and a secondary coil on the heated toilet seat side, wherein a light-emitting tool emits light which goes toward a light-receiving tool through a space between the toilet seat support and the heated toilet seat and, when the light is blocked by a foreign matter caught in the space and thereby the light-receiving tool does not receive light, excitation of the primary coil is stopped. <P>SOLUTION: The light-emitting tool 16 and the light-receiving tool 17 are provided near or inside the primary coil 12A, and an optical guide 18 (optical fiber, etc.) is provided near or inside the secondary coil 12B. When there is no foreign matter in the space G, the light L from the light-emitting tool 16 is received by the light-receiving tool 17 via the optical guide 18. When there is a foreign matter caught in the space G, the light L from the light-emitting tool 16 is blocked by the foreign matter and is not received by the light-receiving tool 17. For this reason, excitation of the primary coil 12A is stopped by a control circuit 19. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electromagnetic induction type power feeding device that feeds power from a power feeding side member to a power receiving side member by electromagnetic induction, and includes a foreign matter detection unit that detects a foreign matter sandwiched between the power feeding side member and the power receiving side member.

Conventionally, an electromagnetic induction type power supply device has a primary coil provided on a power supply side member and a secondary coil provided on a power reception side member, and both coils approach each other as the power supply side member and the power reception side member approach each other. Power supply means for supplying power from the power supply side member to the power reception side member by causing mutual induction in both coils, a foreign object detection means for detecting a foreign object located between the power supply side member and the power reception side member, And a control means for stopping the power supply of the power supply means based on the foreign object detection signal (Patent Document 1).
JP 2001-112190 A

  The foreign matter detection means of the power supply device includes a first light emitting tool provided on the power supply side member and a first light receiving tool provided on the power receiving side member, and a second light source provided on the power receiving side member. An optical signal is transmitted / received between the light emitting tool and the second light receiving tool provided on the power supply side member, and between the first light emitting tool and the first light receiving tool or between the second light emitting tool and the second light receiving tool. When the first or second light receiving device does not receive an optical signal because it is blocked by a foreign material sandwiched between the two light receiving devices, a foreign object detection signal is transmitted to the control means.

  However, since the foreign matter detection means of the power supply apparatus is provided with the first light receiving tool and the second light emitting tool on the power receiving side member, an electric circuit for operating the light receiving tool and the light emitting tool is required on the power receiving side member. This electric circuit increases the cost of the power feeding device.

  In order to solve the above problems, an object of the present invention is to provide an electromagnetic induction power supply device that can reduce the cost of the power supply device.

  In order to reduce the cost of the power supply device, the means adopted by the present invention according to claim 1 includes a primary coil provided on the power supply side member and a secondary coil provided on the power reception side member. As the side member approaches, both coils come close to each other, causing mutual induction in both coils, and a power feeding means for feeding power from the power feeding side member to the power receiving side member, and a foreign object positioned between the power feeding side member and the power receiving side member In an electromagnetic induction power supply apparatus comprising a foreign object detection means for detecting and a control means for stopping power supply of the power supply means based on a foreign object detection signal of the foreign object detection means, the foreign object detection means is provided in the vicinity of or inside the primary coil. A light guide and a light guide that are provided near or inside the secondary coil and receive light from the light emitter and guide the light to the light receiver when the coils are close to each other. And the light is The light receiving tool transmits a foreign object detection signal to the control means when it is blocked by a foreign object sandwiched between the light guide and / or one of the light receiving tool and the light guide tool and is not projected onto the light receiving tool. This is an electromagnetic induction power supply device.

  In order to reduce the cost of the apparatus when applied to a heating toilet seat device, the means adopted by the present invention as claimed in claim 2 is provided with a toilet seat support and a toilet seat heating means supported swingably on the toilet seat support. The toilet seat has a heating toilet seat, a primary coil provided on the toilet seat support and a secondary coil provided on the heating toilet seat, and when the toilet seat is closed, both coils come close to each other and cause mutual induction in both coils. The power supply means for supplying power from the support to the toilet seat heating means of the heating toilet seat, the foreign object detection means for detecting a foreign object located between the toilet seat support and the heating toilet seat, and the power supply means based on the foreign object detection signal of the foreign object detection means In the electromagnetic induction power supply device including the control unit for stopping power supply, the foreign matter detection unit includes a light emitting device and a light receiving device provided near or inside the primary coil, and a toilet seat provided near or inside the secondary coil. Closed A light guide that sometimes receives the light from the light emitting tool and guides the light and projects the light toward the light receiving tool, and the light guides light and / or one of the light emitting tool and the light guide. An electromagnetic induction power feeding device characterized in that a light receiving tool transmits a foreign object detection signal to a control means when it is blocked by a foreign object sandwiched between the light receiving tool and the light receiving tool is not projected.

  In the electromagnetic induction type power feeding device according to the first aspect of the present invention, since the light guide of the foreign matter detecting means provided on the power receiving side member does not require an electric circuit, the conventional power receiving side member requires an electric circuit. Since the structure can be simplified as compared with the power supply apparatus including the foreign matter detection means, the cost is low and the breakdown is difficult.

  In the electromagnetic induction power feeding device according to the second aspect of the present invention, since the light guide of the foreign matter detection means provided on the toilet seat support does not require an electric circuit, the foreign matter detection requires an electric circuit on the toilet seat support. Since the structure can be simplified as compared with the heating toilet seat device provided with the means, it is possible to obtain a heating toilet seat device that is low in cost and hardly breaks down.

  An electromagnetic induction power feeding device (hereinafter referred to as “the device of the present invention”) according to the present invention will be described based on an embodiment shown in the drawings.

  FIGS. 1-6 shows embodiment which applied this invention apparatus to the heating toilet seat apparatus. FIG. 1 shows the closed state of the toilet seat 5 by a solid line and the open state of the toilet seat 5 by a two-dot chain line. The lower part of the toilet body 3 is omitted, and the inside of the toilet seat support 4 and the heating toilet seat 5 is schematically shown. FIG. 2 is a block diagram showing the relationship between members provided on the toilet seat support 4 and the heating toilet seat 5. FIG. 3 is an aspect in which an optical fiber 24 is employed as the light guide 18 and is a plan sectional view in which the insides of the casings 6A and 6B forming the toilet seat support 4 and the heating toilet seat 5 are enlarged, and FIG. E) is a cross-sectional view showing each aspect of the arrangement relationship between the secondary coil 12B and the light guide 18 (optical fiber 24). FIG. 5 shows an embodiment in which prisms 25 are used as the light guide 18 and the insides of the casings 6A and 6B forming the toilet seat support 4 and the heating toilet seat 5 are enlarged, and the primary coil 12A and the secondary coil 12B are sectioned. FIG. 6 is a plan sectional view in which a mirror 26 is employed as the light guide 18 and the insides of the casings 6A and 6B forming the toilet seat support 4 and the heating toilet seat 5 are enlarged.

  As shown in FIG. 1, the device 1 of the present invention is applied to a heating toilet seat device. The toilet seat support 4 (power supply side member) and the toilet seat heating means 7 are attached to the toilet seat support 4 so as to be swingable open / close. Built-in heating toilet seat 5 (power receiving side member), power supply means 8 for supplying power to the heating toilet seat 5 from the toilet seat support 4, and foreign object detection means for detecting a foreign object located between the toilet seat support 4 and the heating toilet seat 5 15 and a control circuit 19 (control means) for controlling the power supply means 8 and the foreign matter detection means 15. The device 1 of the present invention is used with the toilet seat support 4 installed on the upper surface side of the toilet body 3, and when the toilet seat is in an open state where the heated toilet seat 5 is open, the boy can use it smallly and closes and lies down. When the toilet seat is closed, the user can sit on the seating surface portion 5a of the toilet seat 5. The toilet seat heating means 7 employs an electric heater in this example. However, the toilet seat heating means 7 includes an electromagnetic coil and a heating element close to the electromagnetic coil, and generates heat by the electromagnetic coil according to the principle of electromagnetic induction heating. The body may generate heat.

  As shown in FIGS. 1 and 2, the power feeding means 8 includes an excitation circuit 10 provided on the toilet seat support 4 and a wiring 11a on the toilet seat support 4 side provided between the excitation circuit 10 and the toilet seat heating means 7. And a wiring 11b on the heating toilet seat 5 side, a primary coil 12A on the toilet seat support 4 side provided between the wirings 11a and 11b, and a secondary coil 12B on the toilet seat 5 side, both of which are in the closed state of the toilet seat. When the coils 12A and 12B come close to each other and the primary coil 12A is excited by the excitation circuit 10, the coils 12A and 12B are mutually induced to feed power from the toilet seat support 4 to the toilet seat heating means 7 of the toilet seat 5 to generate heat. The seating surface portion 5a is heated by the toilet seat heating means 7.

In the device 1 of the present invention, as shown in FIG. 2, when the toilet seat is closed, a metallic foreign object is sandwiched in the magnetic flux region S through which the magnetic flux of the primary coil 12 </ b> A passes in the gap G between the toilet seat support 4 and the toilet seat 5. In some cases, if the primary coil 12A is excited while the foreign object is sandwiched, the foreign object may generate heat. Therefore, the device 1 of the present invention detects foreign matter caught in the magnetic flux region S of the gap G when the toilet seat is closed by the foreign matter detecting means 15 and stops the excitation of the primary coil 12A by the control circuit 19 to prevent the foreign matter from generating heat. It is like that.

  The foreign object detection means 15 includes a light emitting tool 16 and a light receiving tool 17 provided on the toilet seat support 4 and a light guide tool 18 provided on the heating toilet seat 5, and the light emitting tool 16, the light receiving tool 17 and the light guide tool. It is determined that the light L emitted from the light-emitting tool 16 is received and guided by the light guide 18 and projected toward the light-receiving tool 17 when the arrangement relationship of 18 is in the toilet seat closed state. The light-emitting tool 16 is connected to the control circuit 19 via the wiring 21, and is supplied with power from the control circuit 19 when the toilet seat is closed, and emits light L, for example, an infrared LED element. The light receiving device 17 is connected to the control circuit 19 via the wiring 22 and transmits a normal signal to the control circuit 19 when receiving the light L, and transmits a foreign object detection signal when the light L is not received. For example, it consists of a phototransistor or the like. The light guide 18 receives the light L from the light-emitting tool 16 when the toilet seat is closed, and guides the light L to project the light toward the light-receiving tool 17. Optical elements that do not require electricity for guiding and projecting light (for example, optical fiber 24 (see FIG. 3), mirror 26 (see FIG. 6), etc.) or optical systems that combine optical elements (for example, prisms 25 and 25). (See FIG. 5).

In the device 1 of the present invention, the cores 28 of the coils 12A and 12B of the power feeding means 8 are formed in a U shape, and the tips 28a of the coils 12A and 12B are opposed to and close to each other when the toilet seat is closed. The light emitting tool 16, the light receiving tool 17, and the light guiding tool 18 of the foreign matter detecting means 15 are provided near the core 28 (see (1) to (3) below) or inside (see (4) to (6) below). The gap between the light emitting part of the light emitting tool 16 and the light receiving surface 18a of the light guiding tool 18 and the light receiving part of the light receiving tool 17 and the light projecting surface 18b of the light guiding tool 18 are magnetic flux regions. S is performed at intervals.
(1) A mode in which the light-emitting tool 16, the light-receiving tool 17, and the light guide 18 are provided along the outer side surface portion 28b-1 of the core 28 (see FIG. 3; see FIG. 4A for the light guide 18). )
(2) A mode in which the light emitting tool 16, the light receiving tool 17, and the light guiding tool 18 are provided along the side surface portion 28 b-2 on the center side of the core 28 (the light guiding tool 18 is not shown in the figure, and the light guiding tool 18 is not shown). (See Fig. 4 (B))
(3) A mode in which the light emitting tool 16 and the light receiving tool 17 are provided on the center side of the core 28, and the light guide tool 18 employing the mirror 26 is provided inside the casing 6B that forms the toilet seat 5 (see FIG. 6).
(4) A mode in which the light emitting tool 16, the light receiving tool 17, and the light guiding tool 18 are fitted in the concave groove 28c-1 formed in the side surface portion 28b-1 on the outer side of the core 28 (the light emitting tool 16 and the light receiving tool 17 are illustrated. (Refer to FIG. 4C for the light guide 18)
(5) A mode in which the light emitting tool 16, the light receiving tool 17, and the light guiding tool 18 are fitted in the concave groove 28 c-2 formed in the side surface portion 28 b-2 on the center side of the core 28 (for the light emitting tool 16 and the light receiving tool 17. (Not shown, see FIG. 4D for the light guide 18)
(6) A mode in which the light-emitting tool 16 and the light-receiving tool 17 are inserted into a hole 28e drilled on the tip 28a side of the core 28, and the light guide 18 is inserted into a through hole 28f that penetrates the core 28 (see FIG. 5). (See also FIG. 4E for the light guide 18)

  The light emitting device 16, the light receiving device 17, and the light guiding device 18 of the foreign matter detecting means 15 are provided inside a transparent window 31 into which a transparent plate provided in the casings 6A and 6B forming the toilet seat support 4 or the toilet seat 5 is fitted. There is a mode in which the light emitting tool 16, the light receiving tool 17 and the light guiding tool 18 are not directly contaminated, or a mode in which the light emitting tool 16, the light receiving tool 17 and the light guiding tool 18 are exposed to the outside of the casings 6A and 6B through openings formed in the casings 6A and 6B. . In the present example, the foreign matter detection means 15 is provided with the light emitting tool 16 and the light receiving tool 17 separately from each other at appropriate intervals. However, the present invention is not limited to this, but the light emitting tool 16 and the light receiving tool 17 are integrally formed although not shown. It may also be provided. In this example, the foreign matter detection means 15 is a mode in which only one set of each of the light emitting tool 16, the light receiving tool 17, and the light guiding tool 18 is provided. A plurality of sets may be provided to widen the range in which foreign matter can be detected.

  The control circuit 19 is provided on the toilet seat support 4 and connected to the excitation circuit 10 via a wiring 32. When the control circuit 19 receives a normal signal that does not detect foreign matter from the light receiving device 17 of the foreign matter detection means 15, the control circuit 19 supplies power. The excitation of the primary coil 12A by the excitation circuit 10 is started or continued, and when the foreign object detection signal is received from the light receiving device 17, the excitation of the primary coil 12A by the excitation circuit 10 is stopped.

  In the present invention device 1, when there is no foreign object between the light emitting tool 16 and the light guiding tool 18 and between the light guiding tool 18 and the light receiving tool 17 in the toilet seat closed state, the light L emitted from the light emitting tool 16 is emitted. Passes through the magnetic flux region S of the gap G, passes through the light guide device 18 again, passes through the magnetic flux region S, and is received by the light receiving device 17, and the light receiving device 17 transmits a normal signal to the control circuit 19 and receives the signal. The circuit 19 starts or continues the excitation of the primary coil 12A by the excitation circuit 10. The device 1 of the present invention emits light from the light emitting tool 16 when a foreign object is sandwiched between the light emitting tool 16 and the light guiding tool 18 and / or between the light guiding tool 18 and the light receiving tool 17 when the toilet seat is closed. The received light L is blocked by the foreign matter and is not received by the light receiving tool 17, the light receiving tool 17 transmits a foreign matter detection signal to the control circuit 19, and the control circuit 19 that has received the signal detects the primary coil 12 </ b> A by the excitation circuit 10. Stop excitation.

  Since the light guide 18 of the foreign object detection means 15 provided on the toilet seat support 4 does not require an electric circuit, the device 1 of the present invention has a structure compared to a conventional apparatus having a foreign object detection means that requires an electric circuit. Therefore, it is possible to obtain a heated toilet seat device that is low in cost and is difficult to break down. In the present invention device 1, since the light guide 16, the light receiver 17, and the control circuit 19 are provided on the toilet seat support 4 capable of supplying power at any time and the light guide 18 that functions even without electricity is provided on the heating toilet seat 5, the toilet seat Even when the heated toilet seat 5 in the closed state is not supplied with power (for example, at the start of power supply), the power supply unit 8 is operated after detecting that there is no foreign material in the magnetic flux region S of the gap G by operating the foreign material detection unit 15. Power can be supplied with.

  The present invention device 1 adopts a door frame as a power feeding member and a rotating door as a power receiving member, although not shown in the drawings, other than the embodiment applied to the heating toilet seat device as in this example. And there also exists an aspect applied to a door mounting structure.

An embodiment in which the device of the present invention is applied to a heated toilet seat device, in which the closed state of the toilet seat is indicated by a solid line and the open state of the toilet seat is indicated by a two-dot chain line, It is the left side view which abbreviate | omitted the toilet seat support body and the outline of the inside of a heating toilet seat were shown with the broken line. In the same embodiment, it is a block diagram which shows the relationship of the member provided in the toilet seat support body and the heating toilet seat. In the same embodiment, it is the aspect which employ | adopted the optical fiber as a light guide, Comprising: It is the plane sectional view to which the inner side of the casing which forms a toilet seat support body and a heating toilet seat was expanded. In the same embodiment, FIGS. (A) to (E) are cross-sectional views showing each aspect of the arrangement relationship between the secondary coil and the light guide (optical fiber). In the same embodiment, it is the aspect which employ | adopted the prism as a light guide, Comprising: It is the top view which expanded the inner side of the casing which forms a toilet seat support body and a heating toilet seat, and crossed the primary coil and the secondary coil. In the same embodiment, it is the aspect which employ | adopted the mirror as a light guide, Comprising: It is the plane sectional view which expanded the inner side of the casing which forms a toilet seat support body and a heating toilet seat.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electromagnetic induction type electric power feeder (this invention apparatus) 4 ... Electric power feeding side member (toilet seat support body)
DESCRIPTION OF SYMBOLS 5 ... Power-receiving side member (heating toilet seat) 7 ... Toilet seat heating means 8 ... Power feeding means 12A ... Primary coil 12B ... Secondary coil 15 ... Foreign object detection means 16 ... Light emitting tool 17 ... Light receiving tool
18 ... light guide 19 ... control means (control circuit) L ... light

Claims (2)

  Having a primary coil provided on the power supply side member and a secondary coil provided on the power reception side member, the two coils approaching each other as the power supply side member and the power reception side member approach each other, and causing mutual induction in both coils Power supply means for supplying power from the power supply side member to the power reception side member, foreign object detection means for detecting a foreign object located between the power supply side member and the power reception side member, and power supply of the power supply means based on the foreign object detection signal of the foreign object detection means In the electromagnetic induction type power supply device including the control means for stopping the foreign matter, the foreign matter detection means includes a light emitting device and a light receiving device provided near or inside the primary coil, and a vicinity of or inside the secondary coil. And a light guide that guides the light and projects the light toward the light receiving tool when the light is close to the light receiving tool, and the light is light from both the light emitting tool and / or the light receiving tool. A foreign object caught between the guides It is electromagnetic induction-type power feeding apparatus characterized by receiving device originates a foreign object detection signal to the control means when no light is projected on the light receiving device. A toilet seat having a toilet seat support, a heating toilet seat swingably supported by the toilet seat support, provided with a toilet seat heating means, a primary coil provided on the toilet seat support, and a secondary coil provided on the heating toilet seat; Power supply means for supplying electric power from the toilet seat support to the toilet seat heating means of the heating toilet seat by causing both coils to approach each other in the closed state and to generate mutual induction, and a foreign object positioned between the toilet seat support and the heating toilet seat In the electromagnetic induction type power supply apparatus including the foreign matter detection means for detecting the power supply and the control means for stopping the power supply of the power supply means based on the foreign matter detection signal of the foreign matter detection means, the foreign matter detection means is provided near or inside the primary coil. The light emitting device and the light receiving device, and the light that is provided near or inside the secondary coil, receives light from the light emitting device when the toilet seat is closed, and guides the light to project the light toward the light receiving device. A guide tool, The light receiving tool transmits a foreign object detection signal to the control means when it is blocked by a foreign object sandwiched between the light guide and / or one of the light emitting tool and the light guiding tool and is not projected onto the light receiving tool. Electromagnetic induction type power supply device.

Images