JP2549511Y2 - Electronic devices with tab terminals - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device with a tab terminal having a contact piece.

[0002]

2. Description of the Related Art Conventionally, as an electronic device with a tab terminal, for example, there is one disclosed in Japanese Patent Publication No. 3-657. In this case, a contact terminal plate (tab terminal with a contact piece)
Has one end protruding from the upper surface of the case and connected to the socket for large current, and the other end protruding from the lower surface of the base and connected to the printed circuit board.

[0003]

However, in the above-mentioned device, one end of the contact terminal plate protrudes from the upper surface of the case, and the other end protrudes from the lower surface of the base, and a contact opening / closing mechanism is provided therebetween. I am trying to do it. Moreover, in order to accurately set the distance between contacts provided on the contact terminal plate,
A special holding structure is required for the case. For this reason, the height dimension of the electronic device when mounted on a printed circuit board has become large, and as a result, its use has been greatly restricted. The present invention has been made in view of the above problems, and has as its object to provide an electronic device with a tab terminal having a small height from a printed circuit board.

[0004]

According to the present invention, there is provided a tab terminal formed of a conductive thin plate having one end connected to a high-current socket and the other end connected to a printed circuit board. The contact opening / closing mechanism is formed on the side of the tab terminal by extending the contact piece from the side edge.

[0005]

According to the present invention, since the contact opening / closing mechanism is located on the side of the tab terminal, the height dimension from the printed circuit board when the tab terminal is mounted on the printed circuit board can be reduced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an electronic device with a tab terminal according to the present invention will be described with reference to the drawings. FIGS. 1 and 2 show an electromagnetic relay having a tab terminal,
, A conventionally well-known internal component such as an electromagnet and tab terminals 3 and 4 are attached. These tab terminals 3, 4
Are provided with contact pieces 5, 10 for fixed contacts and movable contacts, respectively, and are press-fitted into press-fit holes 1a, 1a formed on the sides of the internal components. The base 1 is covered with a case 13, and a step 14 is formed on the upper surface of the case 13, and the upper ends of the tab terminals 3, 4 protrude.

As shown in FIG. 3, the tab terminal 3 provided with the contact piece 5 for the fixed contact has a substantially L-shaped cross section with the contact piece 5 extending from the side edge of the conductive thin plate. The height of the tab terminal 3 is kept small. The upper end 6 of the tab terminal 3 is connected to a socket for large current, while a pair of terminal portions 7 project from the lower end and are attached to the printed circuit board 13 (the terminal portion). 7 may be electrically connected to the printed circuit board 13 or simply fixed.) In addition, a pair of retaining projections 8, 8 are formed by projecting below the fixed contact tab terminal 3, so that the projections 8 are firmly inserted into the press-fitting hole 1a of the base 1. It can be fixed. Further, a fixed contact 9 is provided on the contact piece 6.

The tab terminal 4 provided with the contact piece 10 for the movable contact is substantially the same as the tab terminal 3 provided with the contact piece 5 for the fixed contact. 3 is narrower than the contact piece 5 (see FIG. 2). One end of a movable contact piece 11 is fixed to the contact piece 10, and a movable contact 12 provided at a free end of the movable contact piece 11 faces the fixed contact 9 so as to be able to come and go.

[0009] The assembly of the electromagnetic relay, first, the base 1
And the tab terminals 3, 4 are press-fitted into press-fit holes 1a, 1a provided on the sides of the internal components. Then, a case 13 is put on the base 1,
The upper ends of the tab terminals 3 and 4 protrude from the bottom surface of the step portion 14. As a result, the height dimensions of the tab terminals 3 and 4 themselves can be reduced, and can be made substantially the same as the height dimension of the electromagnetic relay. Thereafter, the terminal portions 7, 7 formed at the lower ends of the tab terminals 3, 4 are connected to the printed circuit board 15, and the upper end portion 6 is connected to the high-current socket.

[0010]

As is apparent from the above description, according to the electronic device with the tab terminal according to the present invention, the height of the tab terminal itself is increased by extending the contact piece from the side edge of the tab terminal. Therefore, the height of the electronic device can be reduced, and the usage of the electronic device can be expanded.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view of an electromagnetic relay with tab terminals.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view of a fixed-side tab terminal.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base, 3 ... Tab terminal for fixed contact, 4 ... Tab terminal for movable contact, 5, 10 ... Contact piece part, 6 ... Upper end part, 7 ... Terminal part, 13 ... Case, 14 ... Step part, 15 ... Print substrate.

Claims (1)

(57) [Scope of request for utility model registration] The contact piece extends from a side edge of a tab terminal which is made of a conductive thin plate and has one end connected to a high-current socket and the other end connected to a printed circuit board. An electronic device with a tab terminal, wherein a contact opening / closing mechanism is formed on a side of the tab terminal.