JP2008215028A - Non-contact type feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-contact type feeder capable of supplying an electric power when its movable unit comes closer to its fixed side unit. <P>SOLUTION: This non-contact type feeder comprises a pair of magnetically attracting members 111 and 211; a pair of magnetically operating means 110 and 210 having the magnetically attracting members being installed to the fixed side unit and movable unit mutually attracted magnetically to slide a pair of springs 113 and 213 giving a working force smaller than a magnetic attracting force by the magnetic attracting member in an opposite direction of the magnetic attracting direction by the magnetic attracting member against the magnetically operation means; and electromagnetic coupling means 120 and 220 specially installed to a pair of magnetically operating means for giving and receiving an electromagnetic energy. Further, the electromagnetic coupling means are actuated when the pair of magnetically operating means are located closer by their magnetic attraction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a device that has a fixed device and a movable device, and supplies power by electromagnetic induction between these two devices, and more particularly to a device that supplies power when the fixed device and the movable device approach each other.

  Increasingly, security electronic devices are attached to doors provided at the entrances of buildings. In this case, it is often necessary to connect the power line and circuit wiring from the door frame to the door, and transmission of power and signals is performed by connecting using an appropriate cable or by linking with a wireless system. .

For example, Patent Document 1 discloses a security system in which a power supply unit 10 supplies power to a power reception unit 8 in a wireless manner to charge a secondary battery 7 and a signal is exchanged between an ID card 9 and a card reader 3. ing.
JP 2006-138162 A

  However, Patent Document 1 does not show what specific configuration of the wireless power supply means is.

  Here, as far as the relationship between security and door locking is concerned, it is sufficient that the bag is hung in the closed state and can be removed when the door is opened. If it is assumed that the door is automatically closed by the door checker, it is not necessary to supply power for security purposes in the opened state, so that it is not necessary to exchange power and signals.

  The present invention has been made in consideration of the above-described points, and an object of the present invention is to provide a non-contact power feeding device that feeds power when a stationary device and a movable device approach each other.

In order to achieve the above object, in the present invention,
In a device that performs non-contact power feeding when the stationary device and the movable device approach,
A pair of magnetic attraction members at least one of which is a magnet and magnetically attracts each other;
A pair of magnetic actuating means each having a pair of magnetic members constituting the magnetic attraction member, attached to the fixed side device and the movable side device, and slid by magnetic attraction;
A pair of springs, each incorporated in the magnetic actuating means, for applying an acting force smaller than the magnetic attraction force of the magnetic member in the direction opposite to the magnetic attraction direction by the magnetic attraction member to the magnetic actuating means;
Electromagnetic coupling means each having a magnetic iron core and a winding wound around the magnetic iron core, each of which is attached to the pair of magnetic actuation means and transmits and receives electromagnetic energy;
A non-contact power feeding device, wherein the electromagnetic coupling means is activated when the pair of magnetic actuation means approaches by magnetic attraction,
Is to provide.

  As described above, in the present invention, when the door is closed, when the pair of magnetic actuating means are magnetically attracted and slid, the electromagnetic coupling means attached to the magnetic actuating means exchanges electromagnetic energy to supply power. Therefore, it can supply electric power satisfactorily.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows the configuration of an embodiment of the present invention, and shows the positional relationship of each element when power is supplied from the door frame 200 side to the door 100 side with the door closed.

  In FIG. 1, the magnet 111 which is a magnetic member on the door 100 side and the magnet 211 which is a magnetic member on the door frame 200 are attracted to each other, and the pair of magnetic operating means 110 and 210 are closest to each other. .

  The magnetic actuating means 110 includes a magnet support member 112 and a spring 113 in addition to the magnet 111, and another magnetic actuating means 210 opposite to the magnet 111 includes a magnet support member 212, an extension, in addition to the magnet 211. A spring 213 is provided. Then, when the magnets 111 and 211 are attracted to each other, the springs 113 and 213 are compressed to bring the magnetic actuators 110 and 210 closer to each other.

  The magnetic actuating means 110 and 210 incorporate electromagnetic coupling means 120 and 220, and the magnetic actuating means 120 and 220 together with the electromagnetic coupling means 120 and 220 in the direction of compressing the springs 113 and 213. The sliding projections 112 and 212 slide in the mounting frames 130 and 230 to reach the closest position.

  At the closest position, both are magnetically coupled by the iron cores 121 and 221 in the electromagnetic coupling means 120 and 220, and when an input is given to one of the coils 122 and 222, an output is generated on the other. These inputs and outputs flow to a power supply circuit (not shown) via terminals T1 and T2.

  The iron cores 121 and 221 are exemplified by those having a substantially U-shaped longitudinal cross-section, but the coils 122 and 222 may be wound in the same manner as the U-shaped even if the longitudinal cross-sectional shape is C-shaped or U-shaped. The relationship with the magnetic actuating means 110 and 210 can be similarly configured. The material is not particularly limited, but ferrite is suitable.

  FIG. 2 shows a state in which the door 100 in the state of FIG. 1 starts to open. The door 100 is separated from the door frame 200 and the magnetic operating means 110 and 210 are separated from each other. Or it is the state accommodated in the door frame 200. FIG.

  That is, in FIG. 1, the magnetic operating means 110 and 210 protrude from the outer peripheral surface of the door 100 or the inner peripheral surface of the door frame 200, but do not protrude in FIG. In this state, magnetic attraction between the magnet 111 and the magnet 211 is not performed, and the magnetic actuation means 110 and 210 are retracted together with the electromagnetic coupling means 120 and 220 by the extension force of the springs 113 and 213.

  In this state, since there is no electromagnetic coupling between the electromagnetic coupling means 120 and 220, power feeding between the terminals T1 and T2 is not performed. Therefore, if power supply is required in the open state, for example, a secondary battery is provided on the door 100 side and charged in the closed state, and in the open state, power is supplied from the secondary battery to the circuit. That's fine.

  1 is compared with the door open state of FIG. 2, the positional relationship of the magnetic operating means 110, 210, that is, the magnetic operating means 110, 210 protrudes from each other and electromagnetic coupling means. 120 and 220 perform power feeding. In this closed state, when the magnets 111 and 211 are magnetically attracted to each other, the magnetic operating means 110 and 210 are slid and the electromagnetic coupling means 120 and 220 are electromagnetically coupled to perform a power feeding operation.

  FIGS. 3 (a) and 3 (b) are simplified drawings in FIGS. 1 and 2, and as a result, the magnetic actuating means 110 and 210 and the electromagnetic coupling means 120 are drawn with additional details not shown. 220 and mounting frames 130 and 230. In this case, the door 100 side and the door frame 200 side are shown together, and the reference numerals are shown to be common to both.

  In other words, in the magnetic operating means 110 and 210, the end surfaces of the magnets 111 and 211 and the iron cores 121 and 221, that is, the mutually opposing surfaces are held by the surface members 124 and 224 fixed to the magnet support members 112 and 212.

  For the sliding of the magnetic actuation means 110 and 210, the inner surface of the mounting frame 230 is provided with guide rails 131 and 231 on the ceiling and bottom surfaces that also serve as holding members for the springs 113 and 213, and guide rails 132 on both side walls. , 232 are provided.

  4 (a) and 4 (b) show another configuration example of the electromagnetic coupling means 120 and 220. FIG. That is, FIG. 4 (a) shows that coils 122 and 222 are wound around I-shaped iron cores 121 and 221 whose longitudinal cross-sectional shape is I-shaped, and magnets 111a and 211a of magnetic actuating means 110 and 210 are wound around them. It is a thing arranged. FIG. 4 (b) shows the interior of so-called pot-type iron cores 121 and 221 having a peripheral wall, a bottom wall, and a center column standing at the center of the bottom wall, having a vertical cross section of E shape and a cross section of concentric circles. Coils 122 and 222 are wound and housed in a space, and magnets 111a and 211a are arranged around them. Thus, the electromagnetic coupling means 110 and 210 can have various configurations.

Application examples

  FIG. 5 shows the overall configuration when the present invention is applied to a door thumb-turn operating device. The door 100 is provided with a power receiving device 303 with a thumb turn 303a and a thumb turn operating device 303b, and the door frame 200 is provided with a power transmission device 302 connected to a power source 301.

  Thus, in the closed state, power is supplied in a non-contact manner from the power transmitting device 302 on the door frame 200 side to the power receiving device 303 on the door 100 side, and the thumb turn operating device 303b is used to turn the thumb turn 303a on, for example, a wireless ID card called RFID. Can be opened and closed.

  When the door is opened after the operation, the power supply is stopped. However, there is no inconvenience because the thumb turn operation is not required. After that, the door is closed again and power can be supplied, so that the thumb turn can be operated.

Other examples

  Only one of the magnets 111 and 211 in the above embodiment may be a magnet, and the other may be replaced with a member made of a magnetic material such as iron. Furthermore, as the magnets 111 and 211, an electromagnet that is energized and magnetically attracted in a closed state can be used in addition to the permanent magnet.

  In the above embodiment, power supply between the door and the door frame has been described as an example. However, the present invention is similarly applied to power supply between the fixed-side device and the movable-side device in similar facilities. can do.

It is a longitudinal cross-sectional view which shows the structure of one Example of this invention, Comprising: The figure which shows the closed state of a building. It is a longitudinal cross-sectional view which shows the structure of one Example of this invention, Comprising: The figure which shows the door opening state of a building. The longitudinal cross-sectional view which shows the structure of the other Example of this invention. The perspective view which shows the other structural example of the magnetic action | operation means used for this invention. Explanatory drawing which shows the example which applied the non-contact electric power feeder which concerns on this invention to the thumb turn operating device of a door.

Explanation of symbols

100 doors, 110, 210 magnetic actuation means, 111, 210 magnets,
112, 212 magnet support member, 113, 213 spring,
120,220 electromagnetic coupling means, 121,221 iron core,
122, 222 coil, 130, 230 mounting frame,
131,132,231,232 guide rails, 301 power supply,
302 power transmission device, 303 power reception device, 303a thumb turn,
303b Thumb turn drive. T terminal.

Claims (6)

In a device that performs non-contact power feeding when the stationary device and the movable device approach,
A pair of magnetic attraction members at least one of which is a magnet and magnetically attracts each other;
A pair of magnetic actuating means each having the magnetic attraction member, attached to the fixed side device and the movable side device, and slid by magnetic attraction;
A pair of springs, each incorporated in the magnetic actuating means, for applying an acting force smaller than the magnetic attraction force of the magnetic attraction member to the magnetic actuating means in a direction opposite to the magnetic attraction direction by the magnetic attraction member;
Electromagnetic coupling means each having a magnetic iron core and a winding wound around the magnetic iron core, each of which is attached to the pair of magnetic actuation means and transmits and receives electromagnetic energy;
And the electromagnetic coupling means is activated when the pair of magnetic actuation means approaches by magnetic attraction. In the contactless power supply device according to claim 1,
The non-contact power feeding device according to claim 1, wherein the magnetic actuating means is movable along a direction of magnetic attraction. In the contactless power supply device according to claim 1,
The pair of magnetic attraction members are non-contact power feeding devices in which both are permanent magnets. In the contactless power supply device according to claim 1,
The non-contact power feeding apparatus according to claim 1, wherein the magnetic iron core has a substantially U-shaped vertical cross section, and the pair of magnetic attraction members are arranged at a central portion of the magnetic iron core. In the non-contact electric power feeder of Claim 1,
The non-contact power feeding apparatus according to claim 1, wherein the magnetic iron core has an I-shaped longitudinal section, and the magnetic attraction member is arranged around the magnetic iron core. In the non-contact electric power feeder of Claim 1,
The non-contact power feeding device according to claim 1, wherein the magnetic iron core is a pot type, and the magnetic attraction member is disposed around the magnetic iron core.

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