JPH0112435Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the structure of a ground terminal extending from the casing of an electronic tuner for television.

(Constitution of conventional example and its problems) A conventional ground terminal is constructed as shown in FIG. Reference numeral 1 denotes a tuner housing, and ground terminals 2 are respectively extended in the same direction from a pair of opposing ridges on the bottom surface of the housing. 3 is a power input terminal provided on the bottom surface. A total of four ground terminals 2 are provided, two from each edge on each side. The ground terminal 2 is provided with a stepped portion 4 for limiting the insertion depth when inserted into a predetermined hole of a printed circuit board of a television set.

FIG. 2 shows a state in which each terminal of the tuner is inserted into a predetermined hole of the printed circuit board 5. As shown in FIG. The printed circuit board 5 is provided with a hole 6 for a ground terminal and a hole 7 for a power input terminal, and each terminal is inserted into each hole. However, in this state, there is nothing to support the chyuna, so it falls off. In order to prevent this, the troublesome work of twisting and caulking the earth terminal 2 inserted into the hole 6 was required, as shown in FIG. 2b.

(Purpose of the invention) The present invention is a tuner that can be easily held without the need for troublesome work such as twisting and caulking when mounting a small and lightweight electronic tuner on a printed circuit board. It provides a ground terminal for

(Structure of the invention) In order to achieve the above object, each earth terminal is provided with a stopper stepped portion and a dogleg-shaped bent portion on the tip side thereof. As a result, when the ground terminal is inserted into a predetermined hole on the printed circuit board of the TV set, the slope between the ridge of the bent part and the step for the stopper comes into pressure contact with the hole wall, preventing the tuner from falling off from the printed circuit board. can be prevented.

(Description of Examples) Hereinafter, examples will be described in detail based on the drawings. FIG. 3 shows an embodiment of the present invention, in which a dogleg-shaped bent portion 9 is provided on a ground terminal 8 extending from a pair of ridges on the bottom surface of the tuner housing 1. . Note that the stepped portion 4 is the same as that of the conventional example.

In this embodiment configured as described above, if the dimension between the bent parts of the opposing ground terminals 8 and the corresponding distance between the holes provided in the printed circuit board are appropriately selected, the grounding can be achieved. When inserting the terminal 8 into the hole 6, the ground terminal 8 is pushed inward, and in the inserted state, the elasticity of the ground terminal 8 causes a gap between the ridge of the bent portion 9 and the stepped portion 4. Since the inclined surface of the tuner is in strong pressure contact with the hole wall, the tuner can stand on its own against the printed circuit board without wobbling, and can also be prevented from falling off from the circuit board.

(Effects of the invention) As explained above, according to the invention, the earth terminal has a simple configuration in which the ground terminal is bent into a dogleg shape. Because it can stand on the TV set's printed circuit board without wobbling, there is no need for the troublesome work of twisting and caulking, which is required in the past, when transporting it to solder it at the same time as other mounted electronic components. It will not tilt or fall off during soldering.

[Brief explanation of the drawing]

FIG. 1a is an overall perspective view of a conventional tuner, FIG. 1b is a detailed view of a ground terminal, and FIG. 2a is a combination of the tuner of FIG. 1a and a printed circuit board of a television set. Fig. 2b is a diagram showing twist caulking of the ground terminal, Fig. 3a is an overall perspective view of a tuner according to an embodiment of the present invention, Fig. 3b is a detailed view of the ground terminal, Fig. 3 c is a diagram showing a ground terminal inserted into a board hole. 1...Tuner housing, 8...Earth terminal, 9...
...Bending section.

Claims (1)

[Scope of utility model registration request] In an electronic tuner for television, a total of four ground terminals, two on each side, extending in the same direction from a pair of opposing ridges on the bottom of the case, are connected to the step for the stopper and to the tip end thereof. A bent portion in the shape of a square is provided, and when the ground terminal is inserted into a predetermined hole of the printed circuit board of the television set, the inclined surface between the ridge of the bent portion and the step for the stopper is the hole wall. A ground terminal for a tuner that is press-fitted to allow the tuner to stand on its own without wobbling.