JPS5936951Y2 - Case structure of electric circuit device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a case structure for an electric circuit device that is attached to a circuit board in an electric device, and provides a case structure that allows stable and reliable attachment at all times and facilitates work. It is something.

There are various case structures for conventional electrical circuit devices. For example, in the case shown in FIG. Engaging pieces 1a and 1b are integrally provided,
Insert the engaging pieces 1a, 1b into the retaining holes of the circuit board, and move the side wall 3 of the plate-like case in the same direction as the engaging pieces la, lb.
It has each connection terminal 4 protruding from the terminal.

Further, the rear portion of the connection terminal 4 is soldered to the wiring pattern through the circuit board.

Further, the opening of the case frame body 1 is covered with a case cover 5.

In the conventional case structure described above, the retaining pieces 1a and lb are formed at the tips of the U-shaped case side walls, and the final positioning is achieved by attaching the plate-shaped case side walls. The mounting of the side wall was difficult, as the position of the side wall varied depending on the work, and it was not possible to smoothly install the side wall into the engaging hole of the circuit board in the electrical equipment.

The case structure of the electric circuit device of the present invention eliminates the drawbacks of the conventional case structure described above, and one embodiment thereof will be described below with reference to FIGS. 2 and 3.

FIG. 2 shows an exploded perspective view of an electric circuit device having a case structure according to the present invention. It consists of a mounting member 22, a case cover 23, and a circuit board 24.

A circuit board 24 provided with circuit components 24 a and connection terminals 24 b is attached to the U-shaped case side wall 21 .

Further, the ends of the side walls 21 A of the case side wall 21 that face each other have fitting pieces 21 a and 21 b that fit into the fitting holes 22 a and 22 b of the mounting member 22 .

The mounting member 22 includes an engagement piece 22A. 22B are formed, and the opposing retaining pieces 22A are connected by a connecting part 22C (having an L-shape in longitudinal section), and the opposing engaging pieces 22B are connected by a case constituent part 22D forming a part of the case. connected.

The case frame body 21 and the mounting member 22 are connected by a fitting piece 21a,
After the fitting pieces 21b are fitted into the fitting holes 22a and 22b, the fitting pieces 21b are twisted and temporarily fixed, and the joints are soldered.

Each connection terminal 24b is connected to the case component 2 of the mounting member 22.
It protrudes from each through hole 22C provided in 2D.

Next, the two case covers 23 are attached, and the case is completed as shown in the side view in FIG. 3 (viewed from the direction of arrow A in FIG. 2).

Further, in FIG. 3, the same parts as in FIG. 2 are indicated by the same reference numerals.

According to this, each engagement piece 22A is prevented from being bent due to careless handling due to the connecting portion 22C.

In this example, the case frame body and the mounting member are constructed separately, and the mounting member is provided with an engaging piece, so the securing piece is constructed with good dimensional accuracy and can be easily attached to other circuit boards. It will be held in

The case structure of an electric circuit device of the present invention is a case structure of an electric circuit device in which an electric circuit is arranged. However, since the terminals installed on the circuit board are made to protrude from the main body of the mounting member, and an engaging piece that engages with another circuit board is integrally provided at the end of the main body, the maintenance is improved. The piece is stable in position, and when it is attached to a circuit board in an electrical device, the stable and reliable attachment facilitates the work.

[Brief explanation of drawings]

FIG. 1 is a partial perspective view showing a conventional case structure. 2 and 3 are an exploded perspective view and a side view of the electric circuit device, respectively, illustrating the case structure of the electric circuit device of the present invention. 21... U-shaped case side wall, 22...
・Mounting member, 22A, 22B...Engagement piece, 22
C...Connection part.

Claims (1)

[Scope of utility model registration request] In the case structure of an electric circuit device that houses a circuit board configured with an electric circuit and is attached to another circuit board,
A case frame is constituted by a U-shaped case side wall and a mounting member for another circuit board, and the terminals installed on the circuit board are made to protrude from the main body of the mounting member, and the ends of the main body are A case structure for an electric circuit device that is integrally provided with an engaging piece that engages with another circuit board.