JPS63110960A - Inverter - Google Patents

Abstract

PURPOSE:To reduce the number of components and facilitate assembly, by connecting the components composing a main circuit to each other to fix a main circuit siwtchboard to component terminals, and by composing the main circuit. CONSTITUTION:An inverter is provided with a diode module 21 supported inside a base 7 so that the level of terminals may be set on the same plane, a transistor module 22, a condenser 23, terminals 24-25 on the side of a power source and a load, and a main circuit board 26 connected to a space between the terminals. The board 26 is punched to avoid unnecessary sections except the connecting pattern of a copper plate, and insulation sheets are fitted on the front surface and the back surface, and the board 26 is insulated except the section of the terminals. Besides, by fastening the respective terminal sections of main circuit component parts fitted on the base 7, with screws 29 penetrating the main circuit board 26, a main circuit is composed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inverter device that integrally includes a semiconductor circuit constituting a main circuit and a control device that controls the operation of this circuit.

[Conventional technology]

Figures 6 to 9 show conventional examples of this type of equipment. In Figure 1, (1) is a diode module that converts three-phase AC at a commercial frequency into DC, and (2) is a diode module that converts DC into three-phase AC at a desired frequency. A transistor module that converts to AC, (3) a capacitor that smoothes the DC output of the diode module (1), (4) a power supply side terminal, (5) a load side terminal,
(6) is a control device that controls the operation of the transistor module (21), (7) is a diode module (1), a transistor module (2), a capacitor (3), a power supply side terminal (4), and a load side terminal (51). The base supporting the inner surface E, (9) the heat radiation fins arranged in parallel on the outer surface of the base (7);
)l is supported by a printed wiring board on which a control element (not shown) is arranged, a7J is a main circuit connection line that connects the parts that make up the main circuit, and a3 is a power supply side terminal (41) and a transistor module (2). ) and the printed wiring board (II) via the connector α4, and the control connection line is the front cover that closes the opening of the pace (7).

Constructed as above, the commercial frequency three-phase AC supplied from the power supply side terminal (4) is connected to the diode module (1).
After being smoothed by the capacitor (3), it is input to the transistor module (2), where it is converted into three-phase AC at a desired frequency by the control signal Iζ from the control device (61), and then the load side terminal ( 51.

[Problem that the invention seeks to solve]

The conventional device is configured as 9 or more, and it is necessary to connect the components such as the diode module (1), ) transistor module (2), and capacitor (3) that make up the main circuit with the main circuit connection line 0. However, there were problems in that it required a lot of time to connect, and it was necessary to check for incorrect wiring.

This invention was made to solve two or more problems, and provides an inverter device with excellent reliability, in which the components constituting the main circuit can be easily connected, and there is no risk of incorrect wiring. The purpose is to

[Means for solving problems]

The inverter device according to the present invention is provided with a main circuit wiring board that connects component terminals of semiconductor circuits constituting the main circuit.

[Effect]

In the present invention, since one or more of the above configurations are employed, the components constituting the main circuit can be easily connected, and there is no possibility of erroneous wiring.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. In the figures, the same reference numerals in FIGS. 6 to 9 indicate the same or corresponding parts.

A diode module and a transistor module are supported on the inner side of the base 7 so that the heights of the terminals 21, 22a, and 23 are on the same plane.

Capacitor, power supply side terminal, load side terminal, @ is the diode module Q9 that constitutes the main circuit. Transistor module (company), capacitor power supply side terminal @.

The main circuit wiring board that connects between the load side terminals (to) is made of a thin copper plate, leaving a connection pattern, punching out the excess material and pasting an insulating sheet (c) on the front and back. This is a wiring board that insulates the movement of the insulation pattern, insulates everything except the terminal portion, and integrates the conductor pattern so that it does not come apart.

In addition, each end V of the main circuit components attached to the base (7)
.

The main circuit is constructed by tightening screws that pass through the main circuit wiring board (1) to the child part.

In addition, when the number of components of the main circuit of the inverter device increases and the arrangement of the nine components becomes complicated and the patterns intersect,
Divide into main circuit contact line sheets, overlap the two sheets, and screw Q to the terminal section.
The main circuit may be configured by attaching the main circuit. Further, the main circuit wiring board (e) may be manufactured by etching.

〔Effect of the invention〕

As explained above, this invention configures the main circuit by fixing the main circuit wiring board to the component terminals to connect the components constituting the main circuit, eliminating the need for wiring with connecting wires. In addition to reducing the number of parts, it is possible to provide an inverter device with excellent quality, which is easy to assemble and is free from the risk of incorrect wiring.

[Brief explanation of the drawing]

1 to 5 show one embodiment of this invention. Figure 1 is a front view showing the arrangement of main circuit components, Figure 2 is a front view showing the main circuit wiring board attached to the main circuit components, and Figure 3 is a front view showing the arrangement of main circuit components.
4 is a front view of the main circuit wiring board, FIG. 5 is a bottom view of the main circuit wiring board, FIGS. 6 to 9 show conventional examples, and FIG. 6 is a circuit diagram. FIG. 7 is a perspective view showing the external appearance, FIG. 8 is a perspective view with the front cover removed, and FIG. S is a longitudinal sectional view. In the figures, the same reference numerals indicate the same or corresponding parts, αG
is a printed wiring board, t2η is a diode module, @
2 is a transistor module, IJ3 capacitor,
Q4 is the 'a source side terminal, (C) is the load side terminal, and (C) is the main circuit wiring board.

Claims (1)

[Claims] In an inverter device comprising a semiconductor circuit constituting a main circuit and a printed wiring board on which a control element for controlling the operation of the semiconductor circuit is arranged, a main circuit wiring board is provided to connect component terminals of the semiconductor circuit. An inverter device characterized by: