Power supply device for controlling automatic door

• US 5,594,316 A
• Filed: 06/13/1994
• Issued: 01/14/1997
• Est. Priority Date: 04/14/1992
• Status: Expired due to Fees

• Current Assignee: Tsuden Kabushiki Kaisha
• Original Assignee: Tsuden Kabushiki Kaisha
• Inventors: Hayashida, Tatekazu
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): Law, Patrick B.
• Application Number:
  US08/258,988
• Time in Patent Office: 946 Days
• Field of Search: 49/280, 49/360, 49/370, 320/2, 187/290, 187/316, 187/410
• US Class Current: 49/31
• CPC Class Codes: E05F 15/73 responsive to movement or presence of persons or objects
• CPC Class Codes: E05Y 2400/612 Batteries
• CPC Class Codes: E05Y 2400/614 charging thereof
• CPC Class Codes: E05Y 2400/656 by travelling contacts
• CPC Class Codes: E05Y 2400/66 Wireless transmission
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: Y10S 320/10 Nonbattery load controls charging

Abstract

In order to realize a power supply device for a sensor which can be used for a long time without any wire linking an outside power source and a movable door so as to supply an electric power, an outside power source contact on a transom and a battery contact on a door are connected when the door is in its closed or open position, induced current is generated from a primary circuit on the transom to a secondary circuit on the door by electro-magnetic induction when the door is in its closed or open position, or electric current is generated by a generator mounted to the door by utilizing the closing and opening movements of the door.

Claims

1. A power supply device for automatic door control, wherein a first contact portion connected to an outside power source is mounted on a transom for suspending a door therefrom, said door is provided with a secondary power source to be charged by said outside power source and a second contact portion wherein said first and second contact portions are connected to each other when said door is closed or opened so as to supply power to said secondary power source, wherein said first contact portion is a stopper having socket-shaped plus and minus contacts and said second contact portion is a stopper having plug-shaped plus and minus contacts.

2. A power supply device for automatic door control as claimed in claim 1, wherein said secondary power source is a battery.

3. A power supply device for automatic door control as claimed in claim 1, wherein said secondary power source is a high-capacity condenser.

4. A power supply device for automatic door control, wherein a first contact portion connected to an outside power source is mounted on a transom for suspending a door therefrom, said door is provided with a secondary power source to be charged by said outside power source and a second contact portion wherein said first and second contact portions are connected to each other when said door is opened or closed so as to supply power to said secondary power source, wherein said first contact portion comprises a first plate stopper and contacts which are respectively mounted on the transom, and said second contact portion comprises a second plate stopper and spring plate contacts which are respectively mounted on the door.

5. A power supply device for automatic door control, comprising;

a primary circuit mounted on a transom,

a secondary circuit mounted on a door,

wherein said primary and secondary circuits are opposed to each other when said door is opened or closed, and an electric power is supplied to a secondary power source mounted to said door by an electro-motive force of said secondary circuit induced by said primary circuit,

a sensor mounted on said door which receives electric power from said secondary power source, and

means whereby said sensor controls the movement of said door.

6. A power supply device for automatic door control as claimed in claim 5, wherein said primary circuit and said secondary circuit are a separated-type transformer, and said secondary circuit includes a rectifier to generate a DC power.

7. A power supply device for automatic door control as claimed in claim 5, wherein said secondary power source is a battery and said rectifier is a diode.

8. A power supply device for automatic door control as claimed in claim 5, wherein said primary circuit generates a high frequency and said secondary circuit resonates in tune with the generated high frequency.

9. A power supply device for automatic door control, wherein a primary circuit and a secondary circuit for supplying an electric power are respectively mounted to a transom and a door to be opposed to each other when said door is opened or closed, wherein electric power is supplied to a secondary power source mounted to said door by an electro-motive force of said secondary circuit induced by said primary circuit, wherein said primary circuit and said secondary circuit have electrodes which when opposed to each other utilize electrostatic induction.

10. A power supply device for automatic door control, wherein a generator and a secondary power source connected to said generator are mounted to a door, and said generator is driven by the rotation of a roller which rotation is caused by the movement of said door relative to a rail of a transom, thereby charging said secondary power source when said door is opened and closed.