JP2002334812A - Non-contact feed terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-contact feed terminal which reduces man-hours required for winding a secondary winding, and which is improved in insulation properties and reliability. SOLUTION: An integrated bobbin 17 of insulating resin is built in a center leg 22 of the terminal core 21 of a non-contact feed unit, and a coil 16 sheathed for insulation is built in as a secondary coil winding on top of the monolithic bobbin 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for reducing the number of work steps,
The present invention relates to a non-contact power receiving device for improving reliability.

[0002]

2. Description of the Related Art FIG. 4 is a schematic sectional view of a power supply / reception section of a conventional non-contact power supply apparatus. Traveling rails 52 are laid on the transport path surface 51, and hangers 53 that support a power supply line 54 are arranged side by side. The feed line 54 has two lines 54a and 54b for forward and backward paths for passing currents in opposite directions.
Are stretched respectively. On the other hand, in the carrier 55, a secondary coil 57 is wound around a power receiving core 56 having a substantially E-shaped cross section to form a secondary coil winding, and the power supply lines 54a and 54b are formed by two grooves of the substantially E-shaped power receiving core 56. It is stretched so as to be located at substantially the center of the. When a high-frequency current flows through the power supply line 54, a magnetic field is generated in the substantially E-shaped power receiving core 56, and power is supplied to the carrier 55 in a non-contact manner by electromagnetic induction between the secondary coil 57. Regarding the secondary coil winding, refer to
In Japanese Patent Application Laid-Open No. 1-54349, it is proposed to increase the power transmission efficiency by additionally attaching a magnetic core to the side surface of the tip of the core, and to insert the bobbin into a frame shape and winding the bobbin alone into the core. are doing.

[0003]

In the prior art described above, when a secondary coil winding is applied to the central convex portion of the power receiving core, the projecting portions on both sides of the core are on both sides, which hinders the winding operation and requires time and effort. There was such a problem. In particular, a secondary coil winding and a power supply line are provided inside the core, and during operation of the non-contact power supply device, the power receiving core moves together with the power receiving unit at a position close to the power supply direction. Further, the insulation coating of the secondary coil and the power supply line is often made of vinyl resin or the like, and there has been a problem that the coating is peeled off by contact with the core edge in various places, causing a trouble.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a non-contact power receiving device that reduces the number of steps of a secondary coil winding operation and improves insulation performance and reliability.

[0005]

To achieve the above object, the present invention provides a non-contact power supply for transmitting power to a secondary coil winding wound around a power receiving core by flowing a high-frequency current through a power supply line. , The entire inner peripheral surface of the power receiving core is covered with a bobbin made of an insulating resin.

[0006]

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

FIG. 1 is an external perspective view of a secondary coil winding portion of a power receiving unit of the non-contact power feeding device according to the present invention.

FIG. 2 is an external perspective view of an integrated bobbin made of insulating resin of the non-contact power feeding device of the present invention, and FIG. 3 is a schematic view of the bobbin secondary coil winding portion. As shown in FIG. 2, a required number of coils 16, which are insulated and coated on a bobbin 17 made of an insulating resin, are incorporated into a central leg 22 of a substantially E-shaped power receiving core 21 as a secondary coil winding. I have. At the time of the secondary coil winding work, the secondary coil winding part of the bobbin 17 is inserted into the winding jig 19 as shown in FIG. It is bent and fixed to the winding jig 19 and wound. In addition, a reverse taper step 20 is provided at the tip of the bobbin, and during winding, the coil 16 is subjected to stress in the direction opposite to the tip, so that it is difficult to loosen. On the other hand, one end 17b of the bobbin is bent and held in the power supply direction on the side where the power supply lines 9a and 9b are close to each other. This serves as a partition and the feeder line 9 due to the loosening of the secondary coil 16
a, 9b is prevented. Similarly, for the other side, the bent portion 17a serves as a partition to prevent the secondary coil 16 from coming loose. In addition, by providing flat portions that can be bent by providing thin portions 18 at a plurality of other locations, contact between the core edge portions and power supply lines 9a and 9b can be prevented at the time of assembly, and secondary coils at the beginning and end of winding can be prevented. Is hooked on a U-shaped notch 17C provided in the bent portion 17b so as not to be loosened.

FIG. 5 is an overall configuration diagram showing an example of an embodiment in which the non-contact power supply device of the present invention is applied to an elevator. A car 2 and a counterweight 3 are provided in the hoistway 1,
A control device 4, an electric motor 5, and a hoist 6 are provided above the hoistway 1. The motor 5 and the hoist 6 are driven by a command from the control device 4 to move the car 2 and the counterweight 3 in the hoistway 1 up and down via the car guide rail 7 and the main rope 8. . In the hoistway 1, a power supply line 9 of the non-contact power supply device is extended in parallel with the car guide rail 7. This power supply line 9 is a high-frequency power supply 10
, And a high-frequency current is supplied. On the other hand, a power receiving circuit 11 is mounted in the car 2, and a power receiving unit of the non-contact power feeding device of FIG. 1 connected to the power receiver 12 is integrally supported with the car 2 and moves up and down along the guide rail 7. It has become. When an elevator is moved up and down by non-contact power supply, the entire device becomes complicated due to building conditions and the like, and repair and maintenance require many man-hours. Until design specifications are determined, repeated mounting operations are indispensable. According to the present invention, even if the power receiving / receiving specification is changed, a safe operation can be performed because the integrated bobbin made of insulating resin covers each edge of the power receiving core 1.

[0010]

As described above, in the secondary coil winding in the non-contact power feeding device, the bobbin is formed as an integral product made of an insulating resin and covers the entire inner peripheral surface of the core to improve the insulation performance between the winding and the core. By providing a step at the tip of the secondary coil winding portion of the bobbin, the winding can be prevented from coming loose in the tip direction. In addition, by providing thin portions at a plurality of locations on the bobbin so as to be bent and providing flat portions, and bending and assembling the flat portions with the power receiving core, each core edge portion and the feed line, the secondary coil and the feed line come into direct contact. Can be prevented. In addition, when raising and lowering an elevator by non-contact power supply, the entire device becomes complicated due to building conditions and the like, and repair and maintenance require many man-hours.
It is easy to change the power receiving / receiving specifications.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a power receiving unit secondary coil winding unit of a non-contact power supply device according to an embodiment of the present invention.

FIG. 2 is an external perspective view of an integrally molded bobbin made of an insulating resin, which is the gist of the present invention.

FIG. 3 is a schematic diagram of a secondary coil winding part of a power receiving unit of the non-contact power feeding device according to the present invention.

FIG. 4 is a schematic cross-sectional view of a power supply / reception unit of a non-contact power supply device according to a conventional example.

FIG. 5 is an overall configuration diagram showing an example of an embodiment in which the non-contact power supply device of the present invention is applied to an elevator.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hoistway 2 elevator car 3 counterweight 4 control device 5 motor 6 hoisting machine 7 car guide rail 8 main cable 9 feeder line 10 high frequency power supply 11 power receiving circuit 12 power receiver 13 running rail 14 hanger 16 secondary coil 17 bobbin 17a Bending portion 17b One end of bobbin 17c U-shaped notch 18 Thin portion 19 Winding jig 20 Reverse taper step 21 Power receiving core 22 Central leg

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiaki Kurosawa 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside the Hitachi Building System Co., Ltd. (72) Inventor Sansoji Hayasaka 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo F term in Hitachi Building Systems, Ltd. (reference) 3F002 GA03 5H105 AA09 AA11 AA18 BA02 BB10 CC02 CC12 CC19 DD10 DD12 DD25 DD28 EE14

Claims (3)

[Claims] 1. A non-contact power supply for transmitting power to a secondary coil winding wound around a power receiving core by flowing a high-frequency current through a power supply line. A non-contact power receiving device characterized by being covered with a bobbin. 2. The non-contact power feeding device according to claim 1, wherein a step is provided at a tip of a bobbin around which a secondary winding wound around the power receiving core is wound. 3. The power supply line according to claim 1, wherein a part of the bobbin is bent so as to cover the secondary coil winding, thereby preventing a contact between the secondary coil winding wound around the power receiving core and a power supply line. Non-contact power receiving device.