JPH0611576Y2 - Semiconductor circuit device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention has a plurality of main circuit parts having different sizes between terminals and mounting surfaces and a control element for controlling the operation of the main circuit parts. The present invention relates to a semiconductor circuit device such as an inverter device including a printed wiring board.

[Prior Art] As such a conventional device, an inverter device as shown in FIGS. 1 to 4 is known.

FIG. 1 shows a circuit diagram, in which 1 is a diode module for converting three-phase alternating current at a commercial frequency into direct current,
Reference numeral 2 is a transistor module for converting direct current into three-phase alternating current having a desired frequency, and 3 is a smoothing capacitor. The diode module 1, the transistor module 2, and the smoothing capacitor 3 are main circuit components and constitute a main part of the main circuit of the semiconductor circuit device. Reference numeral 4 is a power supply side terminal, 5 is a load side terminal, and 6 is a control device incorporating a control element (not shown) for controlling the operation of the transistor module 2.

FIG. 2 is a vertical cross-sectional view of a device having the above-described circuit configuration, and the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In this figure, 7 is a base for supporting the diode module 1, the transistor module 2, the capacitor 3 and the terminal block 8 on the inner side surface, and 9 is heat radiation for reducing the temperature rise of each component 1, 2, 3 due to the current of the main circuit. Fins, 10
Is a printed wiring board supported by the base 7 via a support plate 11 and provided with a control element (not shown) for controlling the operation of the main circuit components, and 12 is a main circuit connecting line for connecting the main circuit components. , 13 are control connection lines for connecting the power supply side terminal 4 and the transistor module 2 to the printed wiring board 10 via the connector 14, and 15 is a front cover for closing the opening of the base 7.

[Problems to be Solved by the Invention] According to the conventional inverter device having the above-mentioned configuration, the main circuit is connected between the components such as the diode module 1, the transistor module 2, the capacitor 3, and the terminal block 8 which form the main circuit. It is necessary to connect the lines 12 and between the transistor module 2 and the printed wiring board 10 for the control device by a large number of control connecting lines 13 as shown in FIG. There is a drawback that it is necessary and requires a long assembling time.

[Means for Solving the Problems] The present invention is intended to eliminate the drawbacks of the above-described conventional device, and a plurality of main circuit components having different sizes between terminals and mounting surfaces and the operation of the main circuit components. In a semiconductor circuit device including a printed wiring board having a control element for controlling the plurality of main circuit components, the plurality of main circuit components are supported and arranged so that the terminals of the plurality of main circuit components are located on substantially the same plane. The main circuit component for supporting and arranging the main circuit component, the main circuit wiring board for collectively wiring the terminals on substantially the same plane, the printed wiring board and the main circuit wiring board are electrically connected and mechanically A semiconductor circuit device is provided with a connector for fixing to the.

[Embodiment] An embodiment of the present invention will be described below with reference to FIG.

Here, the same reference numerals as those in FIGS. 1 to 4 denote the same or corresponding portions.

In FIG. 5, reference numeral 16 is a main circuit wiring board for carrying out collective wiring in which wiring for connecting the main circuit components 1, 2 and 3 is provided.
The terminals 17 of the main circuit components 1, 2 and 3 are fixed with screws 18. Reference numeral 19 is the main circuit wiring board 16 and the printed wiring board 10.
Is a connector for electrically connecting and mechanically fixing.

In FIG. 5, the mounting surfaces of the main circuit components of the base 7, which are the diode module 1, the transistor module 2, and the smoothing capacitor 3, are shown in FIG. The terminal 17 is formed on a stepped mounting surface such that the terminals 17 are located on substantially the same plane. That is, the main circuit component mounting portion, which is the bottom of the base 7, constitutes a main circuit component supporting and arranging means for arranging the plurality of main circuit components so that their respective terminals 17 are located on substantially the same plane.

Diode module 1, transistor module 2,
Since each main circuit component such as the smoothing capacitor 3 is attached and fixed to a predetermined position on the bottom surface of the base 7, the positional relationship of each terminal 17 of the main circuit component on the same plane is substantially fixed, and the main circuit wiring is The plate 16 is formed with holes through which the terminals 17 are inserted at predetermined positions on the plate. The position of the terminal hole of the main circuit wiring board 16 is naturally located at the end or in the middle of the current-carrying path formed on the main circuit wiring board 16.

Unlike the printed wiring board 10 in which the control elements are arranged, the energization path of the main circuit arrangement board 16 is relatively high voltage, for example, AC200V to 440V, DC. Since a large current, which is incomparable with the control current flowing through the printed wiring board 10, flows due to the application of such voltage as described above, it is natural that a measure such as sticking or embedding a plate-shaped conductive material is applied.

Each terminal 17 of the main circuit component is connected to the main circuit wiring board 1 as described above.
It is fixed to 6 with screws 18. Attachment of main circuit components such as the diode module 1, transistor module 2, smoothing capacitor 3 and the like to the stepped bottom surface of the base 7, attachment of the main circuit wiring board 16 to each terminal 17 of the main circuit component, and screws 18 Since the fixing work by all is done from one direction, the assembling work can be automated.

In FIG. 5, a printed wiring board 10 having a control element (not shown) and a main circuit wiring board 16 are provided with a plug constituting a connector 19 for electrically connecting them and mechanically fixing them. Any one of the sockets is integrally connected, and by connecting the plug and the socket, the printed wiring board 10 is electrically connected to the main circuit wiring board 16 via the connector 19 and mechanically fixed. .

With the above configuration, a semiconductor circuit device having a function as an inverter device can be obtained.

In the above embodiment, the mounting surface of the main circuit component is stepped as the main circuit component supporting and arranging means for supporting and arranging the main circuit component so that the terminals of the main circuit component are located on substantially the same plane. Although the base 7 formed as above is used, when the main circuit component mounting surface of the base 7 is not stepped and is on the same plane, the main circuit component is mounted so that the terminals are on the same plane. It may be a spacer inserted between the surface and the base 7.

Although the semiconductor circuit device as the inverter device is described in the above embodiment, the invention is not limited to this.
The same can be applied to other semiconductor circuit devices including a main circuit and a control circuit.

[Effects of the Invention] As described above, according to the present invention, the main circuit component supporting arrangement for supporting and arranging the plurality of main circuit components so that the terminals of the plurality of main circuit components are located on substantially the same plane. Means, a main circuit wiring board for collectively wiring the terminals on substantially the same plane, a printed circuit board on which a control element for controlling the operation of the main circuit component is arranged, and the main circuit wiring board. Since the connector which is connected to and mechanically fixed is provided, it is possible to provide a semiconductor circuit which is easy to assemble without the need for wiring by a connecting line.

[Brief description of drawings]

1 to 4 show a conventional example, FIG. 1 is a circuit diagram, FIG. 2 is a vertical sectional view, FIG. 3 is a perspective view showing the appearance, and FIG. 4 is a perspective view showing a front cover removed. Is. FIG. 5 is a vertical sectional view showing an embodiment of the present invention. 1 ...
... diode module (main circuit part), 2 ... transistor module (main circuit part), 3 ... smoothing capacitor (main circuit part), 7 ... base (main circuit part supporting and arranging means), 8 ... terminal Table 10 ... Printed wiring board, 1
6 ... Main circuit wiring board, 17 ... Terminal, 19 ... Connector.

Claims (1)

[Scope of utility model registration request] 1. A semiconductor circuit device comprising: a plurality of main circuit components having different sizes between terminals and mounting surfaces; and a printed wiring board provided with a control element for controlling the operation of the main circuit components. Main circuit component supporting and arranging means for supporting and arranging the plurality of main circuit components so that the respective terminals of the main circuit component are located on substantially the same plane, and the terminals on substantially the same plane are collectively wired. A semiconductor circuit device comprising: a main circuit wiring board; and a connector for electrically connecting and mechanically fixing the printed wiring board and the main circuit wiring board.