DE20305769U1 - Hinge with built-in transformer for contactless energy transfer - Google Patents

Abstract

A joint or hinge for contactless energy transmission comprises a built-in transformer having at least two coils (3,6) and a metal core (5) which together make up the transformer. - Independent claims also included for the following - (a) a device as above in which at least one side of the hinge contains a coil; - (b) both coils are arranged on a core which lies at least partly within them;a and - (c) a transformer is formed in which coils and coil are relatively movable

Description

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1. Title and description of the invention

"Hinge with built-in transformer for contactless energy transfer"

The invention described below concerns hinges which, like previously known hinges, can be used for house and room doors, windows, cupboards, etc. and additionally include the possibility of contactless energy transmission.

2. Task

In many areas of everyday life, doors and gates with a variety of locks or locking systems have become a matter of course. Everyone wants to protect their private space against unauthorized access and therefore ensures that house and apartment doors and windows are as secure as possible.

As a rule, significantly greater effort is put into securing government and industrial areas. Examples of this include all areas where data and documents must be protected from unlawful access, such as the police, tax and employment offices, city administrations, banks and other sensitive areas.

The locks, locking and security systems used are becoming increasingly more convenient and therefore usually also more technically complex. The part of the systems whose function is based on electronic, optoelectronic and electromechanical components requires electrical power either in the door and/or in the door frame.

The task was to find a solution to wirelessly supply electrical energy to doors, gates, windows, etc. in order to safely supply the installed parts and components.

3. State of the art

The energy transfer from the wall or door frame to the doors is usually done via wires using cable bridges. There are at least three serious disadvantages here:

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• Due to the cable bridge and the associated electrical work, the door cannot be quickly removed and reattached if necessary.

• Existing cable bridges are susceptible to failure in the long term due to the opening and closing movements of the door

• The exposed cable connection between the door and the door frame is a safety risk from the point of view of possible manipulation

4. Novelty of the invention

The new technology involves wireless energy transmission using the hinges on doors and windows. For the following description, the use on a door is described as a representative example of all possible uses on doors, gates, windows, etc.

The invention is based on the following considerations:

• For the proper functioning of the control system or electronics in the door to be supplied, an uninterrupted power supply must be guaranteed

• on the door, only those positions that have a permanent and firm connection to the door and door frame can be used for transmission.

• For security reasons, a solution must be found that also

in the worst case scenario, poses no danger to people or the environment.

Given this background, the door hinge was the only option for transferring energy to the door. Since the door should be able to be removed without any problems and without tools or wiring work even when the power supply is connected, attention had to be paid to a feasible mechanical separation of the energy transfer during the design.

The function is based on the well-known principle of the transformer. Two coils are used on a common iron core, whereby one coil, the primary side, has current flowing through it and thus generates a voltage in the second coil, the secondary side. The electrical values depend on the respective dimensions of the coils and the iron core in relation to each other.

Wolfgang Staude patent application hinge

09.04.03

The coil of the primary side of the transformer is integrated in the part of the hinge that is firmly connected to the door frame. The fixed installation and connection to the wall enables a simple power connection, e.g. using a cable and a distribution box installed in the wall.

The coil on the secondary side of the transformer is housed in the part of the hinge that is firmly connected to the door and is therefore located in the moving part of the door. From here, wiring to the lock area can be carried out inside the door during production.

The wiring from the outside into the hinge and thus to the respective coil can be implemented in different ways. The following options are available, among others:

• the connection is guided through a stable piece of pipe, which also serves as a fastening element for the hinge in the door frame and in the door

is used (see principle - drawing)

• the connection is guided through a separate sleeve that runs parallel to the normal fastening from the hinge into the door or door frame

Further connection options depend on the type of fastening used for the hinges. It is only necessary to ensure that the connection cables are routed in a stable and relatively rigid housing part.

5. Application examples

Below are three examples of possible applications.

• In the real estate sector, more and more locking devices are being used on the entrance doors of areas that require special protection. These require electrical energy in the door. The electricity is needed, among other things, to supply access control systems, sensors and other security devices. This trend will increase and lead to the increased use of such systems in private residential properties for security reasons.

• In the automotive sector, central locking systems for doors are now widespread and will soon become standard equipment in every car

Wolfgang Staude patent application hinge

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09.04.03

All of these systems must be supplied with electrical energy in the door. Currently, this is still done by wiring between the door and the chassis. In the future, in conjunction with other methods that replace electrical wiring in the traditional sense, a

new application possibilities arise.

A wide variety of applications arise on all types of flaps that are attached with hinges and require electrical energy, e.g. for tail lights, emergency lighting, limit switches, etc. This can be the case with trailers, agricultural vehicles, trucks and other vehicles. But the invention can also be used on flaps in industrial plants to connect limit switches, sensors or the like.

Wolfgang Staude patent application hinge

09.04.03

List of reference symbols

1 Fixing in door

2 sleeve

3 Secondary coil (transformer)

4 Voltage output

5 Metal I core

6 Primary coil (transformer)

7 Fastening in door frame

8 Voltage connection

Wolfgang Staude
Patent application hinge

18.09.03

Claims (1)

Hinge with built-in transformer for contactless energy transfer characterized by 1. the hinge contains at least two electrical coils and at least one metal core, which together form a transformer due to their structure characterized in that 1. one of the two sides of the hinge that can be moved relative to each other and serve for fastening contains an electrical coil characterized by 1. the two coils mentioned under 1. and 2. are arranged together on a metal core in the assembled state of the hinge in such a way that the metal core or parts of the metal core are spatially located within the two electrical coils characterized by 1. the two coils and the metal core form a transformer in which at least one coil and the metal core mentioned under 3. are movable relative to each other