JPS5919450Y2 - Push-button components in push-button tuners - Google Patents

Description

[Detailed description of the invention] This invention relates to a push button member for varying the inductance in a push button tuner, and in particular, a combination of a cassette recorder and a push button tuner that is installed in a limited space as a recent trend. In order to meet this demand, there is a particular need to reduce the thickness of the push-button tuner, which is an important component.

The present invention has achieved the objective of making the push button member thinner by making effective improvements to it, and one embodiment of the present invention will be described below based on the accompanying drawings.

As shown in FIG. 1, a flat reading body 3 is slidably attached between a pair of front plate 1 and rear plate 2, and a sliding part 3a and a dowel 3b are formed in the center of the sliding part. A hole 4C of the frequency regulation plate 4, which is composed of a plurality of protruding shafts 4a and 4b, is formed on the upper surface of the portion 3a.
are rotatably fitted into the dowels and piled up, and the frequency regulation plate is provided so as to be settable at any position, and the protrusion of the frequency regulation plate is placed between the side plates 7 and 8 perpendicular to the front plate and the rear plate, respectively. Two transverse movement plates 9, 10 are provided which are movable in opposite directions when either one of the shafts 4a or 4b comes into contact with the corresponding cam portion 9a or 10a, and has a dogleg shape at one end. The tip of the retaining part 5b provided at the other end of the restraining spring 5 where the part 5a is formed engages with the locking piece 3C of the reading unit 3 and protrudes, and is positioned so as to be able to come into contact with the upper surface of the outer periphery of the frequency regulating plate. The operating member 6, which has a push button at one end and a hill-shaped portion 6b at the other end, slides on the upper surface of the reading body 3 in its length direction in response to the pressing action of the push button 11, and pushes up the restraining spring 5. The frequency regulation plate 4 is provided at the end of the retaining portion 5b so as to be able to be locked at any position of the reading unit 3, and a T-shaped rotating member 12 is provided separately.
This is a push-button type tuner configured so that the displacement of the lateral movement plate is converted into the back and forth movement of the core support plate 13 to achieve variable inductance.

Conventionally, the push-button member in this type of push-button tuner has a structure in which a frequency regulating plate 4, a restraining spring 5, etc. are stacked on a flat reading body 3', and the front plate 1, rear plate 2 and The push button member, which is slidably attached to the push button member, must have a certain degree of strength in order to lock the frequency regulating plate 4 in any desired position on the reading unit 3'.

For this reason, each member constituting the push button member needs to have a sufficient thickness to withstand the above-mentioned strength, and as a result, in conventional push button type tuners, the height T of the push button member is the biggest constraint for making the push button member thinner. It was said that

Therefore, in order to meet the above-mentioned demands, the present invention is a push-button type tuner that achieves a thinner profile while maintaining the holding strength of the push-button member.
A suitable sliding portion 3a and a dowel 3b are formed in the center of the sliding portion by pressing or other machining on the upper surface, and a frequency regulation device consisting of a plurality of protruding shafts 4a and 4b is formed on the upper surface of the sliding portion 3a. By configuring the hole 4C of the plate 4 to be rotatably fitted into the dowel, the height T' of the push button member can be increased by the portion A where the reading body 3' and the frequency regulating plate 4 are fitted and stacked. It can be lowered.

As described above, by fitting the frequency regulating plate 4 into the sliding part 3a formed in the reading unit 3, the present invention can be made significantly thinner, and can be accommodated in the limited space due to the arrangement of electrical components. To provide a push button member which is effective when adopted in a combination type push button type tuner that must be used.

[Brief explanation of drawings]

FIG. 1 is a partially omitted perspective view of a push-button type tuner including a push-button member according to the present invention. FIG. 2 is an exploded perspective view of the push button member of the present invention. FIG. 3 is a partial sectional view showing the arrangement of the push button members of the present invention. FIG. 4 is a partial sectional view of a conventional push button member corresponding to FIG. 3. In the figure, 1 is the front plate, 2 is the rear plate, 3 and 3' are the reading body, 3a is the sliding part, 3b is the dowel, 3C is the locking piece, 4 is the frequency regulation plate, 4a and 4b are the protrusions. Shaft, 4C is a hole, 5 is a restraining spring, 5a is a doglegged portion, 5b is an engaging portion, 6 is an actuating member, 6
a is a hill, 7 and 8 are side plates, 9 and 10 are transverse plates, and 9a. 10a is a cam part, 11 is a push button, 12 is a rotating member, 13
is the core support plate.

Claims (1)

[Scope of utility model registration request] A cam portion 9 of two transverse movement plates 9 and 10 in which the reading body 3 and the core support plate 13 are interlocked to achieve variable inductance.
a , a plurality of protruding shafts 4 a that come into contact with 10 a over time
, 4b, a rotatable frequency regulating plate 4, a retaining spring 5 for inhibiting the frequency regulating plate, and an actuating member 6 for tilting the inhibiting spring. A push button type tuner characterized in that, in a push button member mounted so as to be freely movable, a reading body 3 is formed with a base portion 3a, and a frequency regulating plate 4 is rotatably fitted and stacked on the sliding portion. push button parts.