Reactor unit

A technology for reactors and electrical terminals, applied in the direction of inductors, electrical components, fixed inductors, etc., can solve problems such as poor contact, aluminum wire fixing, and high soldering cost

Active Publication Date: 2012-05-30
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the existing electrical connection device between the aluminum winding coil and the copper wire, the aluminum wire cannot be fixed on the copper electrical terminal with ordinary solder, so it is necessary to use a special solder material for aluminum wire, which will cause Problems such as higher cost than usual solder and difficult handling
[0007] In addition, when the heat of the winding coil is transferred to the terminal and thermal stress is applied to the electrical terminal, due to the difference in thermal expansion coefficients of aluminum and copper, cracks are prone to appear at the solder part, resulting in poor contact, so there are still reliability problems.

Method used

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Embodiment Construction

[0019] An embodiment of the present invention will be described in detail below with reference to the drawings. At the same time, it should be pointed out that the embodiments of the present invention do not have the function of limiting the scope of the present invention.

[0020] (Example)

[0021] Refer below Figure 1 ~ Figure 4 The reactor unit of this embodiment will be described. The reactor unit of this embodiment is used to suppress the high-frequency current in the washing machine with variable frequency control and improve the power factor. Aluminum wire is used for the winding coil, and copper wire is used for the power input part, between the winding coil and the copper wire. Equipped with electrical connections.

[0022] figure 1 This is a cross-sectional view of the reactor unit in this embodiment. Such as figure 1 As shown, the electromagnetic thin steel sheet is stamped into the shape of the English letter "E" by a stamping die and then laminated / welded to form...

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Abstract

A reactor unit includes a winding coil having aluminum wires wound around an iron core, and a copper-made electric terminal connected to end parts of the winding coil, in which the electric terminal has a pressing and connecting part for pressing and connecting aluminum wires of the winding coil at one end, and a welding part of a nearly flat shape at other end, so that the electrical connection between dissimilar materials is realized at low cost and high reliability.

Description

Technical field [0001] The present invention relates to a reactor used in electrical and electronic equipment, and more specifically, to a reactor unit provided with an electrical connection device between a winding coil wound by aluminum wire and a copper wire. Background technique [0002] Japanese Patent Laid-open Publication No. 1995-22258 shows an existing reactor with an electrical connection device between the winding coil and the copper wire. Figure 5 It is the main view of the existing reactor. [0003] Such as Figure 5 As shown, an iron core 2 is installed on the iron base 1, and a winding coil 4 is installed on the iron core 2. The winding coil 4 is wound by an aluminum wire 3 with a sintered paint film on the surface. The entire reactor needs to be varnished deal with. The reason why the winding coil 4 is composed of an aluminum wire 3 made of aluminum is that the aluminum wire 3 is more cost-effective than a copper wire. In recent years, the aluminum wire has been wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/29H01R43/16
CPCH01R4/023H01R4/72H01R4/184H01R11/16H01F37/00H01F27/29H01F27/2828H01R4/029H01R4/62H01R4/187
Inventor 柳真介松尾繁
Owner PANASONIC CORP
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