JPH0134441Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of an antenna connection device used in an automobile radio receiver or the like.

FIG. 1 is a schematic diagram showing a conventional antenna connection device. In the figure, 1 is a chassis, and 2 is a chassis 1.
An antenna socket fixed to the outer peripheral part 2a electrically coupled to the chassis 1;
The internal electrode portion 2c is fixed to the electrode portion a via an insulator 2b. Further, 3 is a lead wire that is connected to the internal electrode portion 2c and supplies the received signal to the input circuit of the radio receiver, and 4 is an antenna plug that is connected to the antenna and supplies the signal. It is composed of a spring 4a that is pressed into contact with the internal electrode portion 2c, and an electrode portion 4b that is pressed against the internal electrode portion 2c. Here, one side of the antenna plug 4 is grounded via a spring 4a, and the + side is connected to the internal electrode section 2c via an electrode section 4b.

This invention was made to eliminate the above-mentioned drawbacks, and provides an antenna connection device that is inexpensive and easy to assemble by making the arm side and the plug side independent.

Hereinafter, this invention will be explained as an example in Figures 2 and 3.
The diagram will be explained.

In the figure, 5 is a printed circuit board fixed at a predetermined position on the chassis 1, 6 is a terminal attached to the printed circuit board 5 by soldering, and as shown in FIG. , flat plate part 6
b, and a connecting portion 6c which is formed by bending both sides of the flat plate portion 6b and has a narrow portion on the free end side. Further, a through hole 6d is formed in the center of the flat plate portion 6b, and the outer peripheral portion of the through hole 6d is further recessed into a funnel shape. 7 is a chassis made of sheet metal or the like, 8 is a grounding terminal formed by molding the end of the chassis 7 into a cylindrical shape, and a locking piece 7a abuts on the free end side to prevent the cylindrical shape from opening. has been done.

Note that the opening of the chassis 1, the ground terminal 8, and the through hole 6d of the terminal 6 are formed so that their centers are the same. Further, the terminal 6 is made of a material such as phosphor bronze that has spring properties and has good contact and solderability. That is, by bringing the spring 4a of the antenna plug 4 into contact with the ground terminal 8 and bringing the electrode portion 4b into contact with the terminal 6, it becomes possible to supply the signal from the antenna to the radio receiver.

With this configuration, the number of parts can be reduced and assembly can be simplified compared to conventional antenna connection devices.

As explained above, according to this invention, it is possible to obtain an antenna connection device that is inexpensive and easy to assemble, and this invention has great practical value.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a conventional antenna connecting device, Figs. 2 and 3 are schematic diagrams showing an antenna connecting device which is an embodiment of this invention, and Fig. 4 is a schematic diagram showing a conventional antenna connecting device.
FIG. 4 is a perspective view of a main part in FIG. In the figure, 1 is a chassis, 4 is an antenna plug, and 5
is a printed circuit board, 6 is a terminal, 7 is a chassis, 7a
is a locking piece, and 8 is a ground terminal. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] a chassis, a printed circuit board mounted on the chassis, a terminal mounted on the printed circuit board and placed opposite the opening of the chassis, one end of the chassis rolled up to form a cylindrical shape; It has a locking piece that holds down the vicinity of the free end so that the wound free end does not open, and is equipped with a grounding terminal placed between the chassis and the terminal. An antenna connection device characterized in that the antenna connection device is brought into contact with the antenna.