JPS5825613Y2 - Preset channel selection device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a preset channel selection device that allows immediate selection of a desired channel by pressing a selection operation button, and particularly relates to an improvement in the operation button mechanism.

One of the conventionally known preset tuning devices of this kind has a flat frame with a plurality of flat tuning operation buttons arranged side by side, and the user selects one of these buttons. When pressed, a slide plate provided slidably along one side of the frame is slid to a position corresponding to the pressed button, and the tuner is variable controlled by the sliding position of the slide plate. Some devices are equipped with a thin operation button mechanism.

The above-mentioned thin operation button mechanism has a slider equipped with a locking claw around the periphery that is slidably inserted into a rectangular guide hole provided in a generally flat frame. A part of the operating button is connected to the slider, so that the operating button can be inserted and removed smoothly.

The operation button mechanism with the above configuration has a locking claw integrally provided around the slider to prevent it from falling, so it is difficult to manufacture the slider with high dimensional accuracy. The thickness of the locking pawl, which is a part of the slider, occupies a wasted space, resulting in an increase in the overall thickness of the operation button mechanism.

Note that if the thickness of the slider itself is made thinner and the amount of protrusion of the locking pawl is made smaller, the parallelism of the slider to the guide hole cannot be maintained, and as a result, the operation button may tilt or become loose. to occur.

This idea was devised based on these circumstances,
The purpose is not only to allow the slider to slide freely into the guide hole with sufficient parallelism, but also to be able to manufacture the slider etc. with high precision, and to avoid exceeding the thickness of the operation button mechanism. It is an object of the present invention to provide a preset channel selection device which can be made thin and can be miniaturized as a whole.

The details of this invention will be clarified below with reference to embodiments shown in the drawings.

FIG. 1 is a perspective view showing an outline of an embodiment of this invention.

In FIG. 1, reference numeral 1 denotes a flat base, which is made, for example, by processing and forming a metal plate into a thin box shape.

This base 1 has a plurality of operation buttons 2 a , 2 b .
is attached to one end surface of the base body 1 so as to be freely insertable and removable as shown by arrow A.

Further, a slide plate 3 made of a thin plate is provided on the base body 1 so as to be slidable in the direction shown by an arrow B, as shown by the wavy line in the figure.

The slide plate 3 and each of the operation buttons 2a, 2b~ are such that when one of the operation buttons 2a, 2b~ is selectively pressed by a well-known means, the slide plate 3 is pressed against the pressed button. They are connected with each other in a unique mechanical positional relationship so that they slide to a predetermined position corresponding to the operation button.

Figures 2a and 2l) are diagrams showing the configuration of the operation button mechanism with some parts removed.

In FIG. 2 a, l), 4 is a flat frame forming the bottom wall surface of the base body 1, and this frame 4 has a plurality of rectangles corresponding to the buttons 2a, 2b. Guide holes 5a, 5b, etc. are formed.

Projections M are formed on the inner edges of each of the guide holes 5a, 5b on both sides so that sliders 6a, 6b, which will be described below, can easily slide thereon.

The sliders 6a, 6b~ are formed of plates having a wall thickness approximately equal to the thickness of the frame 4, and have slightly rounded tips as indicated by the symbol 6C. It has become.

Therefore, these sliders 6a, 6b~ are invaginated into the guide holes 5a, 5b~, and the guide holes 5a, 5b~ are invaginated into the guide holes 5a, 5b~.
It is possible to slide smoothly in the direction of arrow C along the respective lines.

A retaining plate 7 is provided on the surface of the sliders 6 a and 6 b.
a, 7b~ are bonded and fixed.

These holding plates 7a, 7b~ are formed of extremely thin (about 0.1 m/m) metal plates such as aluminum alloy, and the peripheral parts of each are as clearly shown in Fig. 3. It comes into sliding contact with the upper side of the frame 4.

Note that side edges of the extremely thin holding plates 7a, 7b are restricted from moving laterally by guide pins 8 planted on the frame 4, thereby preventing lateral vibration.

An operating rod 9 is provided on the upper side of the holding plates 7a and 7b.
a, 9 b ~ (Only 9a is shown in Fig. 2 a, l, and not shown below 9 b), that is, part of Fig. 2 a
, l) In the middle, the lower surface of the left extension site is bonded and fixed.

The operating rods 9a, 9b~ are made into a frame body by providing a rectangular free hole N in the center of a substantially rectangular plate body, and extend outward from the insertion/removal hole provided in the end face of the frame 4. The operating buttons 2a are fitted into the protruding portions.

A spring 10 is inserted in a compressed state between the operation buttons 2a and the end surface of the frame 4.

Therefore, the operation buttons 2 a , 2 b are always biased in a direction away from the frame 4 by the spring 10 .

A thin plate-like cover 11 having substantially the same shape as the holding plates 7a, 7b is attached and fixed to the upper surface of the operating rods 9a, 9b which are fixedly connected to the holding plates 7a, 7b. ing.

The through holes N of the operating rods 9a, 9b covered by the cover 11 serve as a housing chamber R for accommodating a coupling element (not shown), that is, an element for coupling with the slide plate 3.

As shown in FIG. 2, one of which is shown in cross-sectional view, the present operation button frame structure has a slider 6a recessed into the guide hole a, and is bonded and fixed to the surface of the slider 6a. The holding plate 7a is fixed to the upper side of the holding plate 7a, the operating rod 9a has the lower side of the frame fixed to the upper side of the holding plate 7a, and the holding plate 9a, which is attached and fixed to the upper side of the operating rod 9a, is approximately the same as the holding plate. It is integrated with a shaped cover 11, and the whole slides in the left-right direction in the figure as the operating lever 9a moves.

The upward movement of the upper surface of the guide bar 11 is restricted by a portion of the upper wall surface of the base body 1.

Therefore, the slider 6a does not move vertically,
It is designed to be able to slide smoothly within the guide hole a.

This device configured in this way has operation buttons 2a and 2b.
Press one of ~, for example 2a, and press the other lever 9a.
When pushed into the base 1 against the tension of the spring 10,
The slider 6a integrated with this operating rod 9a is indicated by the arrow C.
Slide in one direction.

At this time, the slider 6a is guided by the guide hole 5a, and since the slider 6a is supported by the extremely thin holding plate 7a, it slides extremely smoothly.

In this way, a coupling element (not shown) is activated, and the slide plate 3 slides to a predetermined position in the direction of arrow B.

As a result, a tuner (not shown) is variably controlled in accordance with the position of the slide plate 3 to achieve the required tuning.

By pressing another of the operation buttons 2a, 2b, etc., the predetermined channel set in advance is tuned in the same manner.

Thus, in this device, the sliders 6a, 6b~
is supported by ultra-thin retaining plates 7a, 7b of only about 0.1 m/m, so a part of the slider is attached to the frame 4.
There is no risk of it protruding significantly from the upper side.

Therefore, the thickness of the entire operation button mechanism including the operation levers 9a, 9b, etc. can be reduced, and the thickness of the base body 1 can also be reduced.

This brings about the advantage that the height restriction of the cassette chip and the like placed on the base body 1 can be relaxed.

In this respect, as shown in FIG. 4, a part of the slider 12 has a claw 13.
14 to stabilize the slider 12, the claws 13 and 14 have to protrude significantly from the top of the frame, so the thickness of the entire momentum operation button mechanism and, by extension, the thickness of the base body are considerably increased. It has to be thick.

On the other hand, the plate-shaped sliders 6a, 6b~ and the holding plate 7a,
7b to 7b are formed separately and then integrated, which has the advantage that the dimensional accuracy of the slider and the holding plate can be sufficiently improved.

Note that this invention is not limited to the one embodiment described above.

For example, in the above embodiment, a single rectangular holding plate is shown as an ultra-thin holding plate, but it may be divided into multiple pieces, or the shape may be changed so as not to interfere with the four sliding movements. It can be anything as long as it doesn't exist.

Furthermore, the material of the retaining plate does not necessarily have to be metal as long as it is relatively hard, wear-resistant, and has good sliding properties.

As explained above, according to the present invention, an extremely thin holding plate is bonded to the slider, and a part of this holding plate is in sliding contact with the frame surface, so that a part of the slider is attached to the frame surface. There is no risk of the slider protruding greatly from the guide hole, the operation button mechanism can be made ultra-thin, and the slider itself does not have to be very thin, so it does not cause any particular problems. The slider can be slidably recessed with sufficient parallelism, and since both the slider and the holding plate are flat, it can be manufactured with high precision without dimensional errors due to processing, etc. , it is possible to provide a preset channel selection device having various special advantages.

[Brief explanation of drawings]

Figure 1 is a perspective view showing an outline of an embodiment of this invention;
Figures a and l) are diagrams showing the configuration of the operation button mechanism of the same embodiment, where a is a partially cutaway plan view, b is a sectional view taken along the line X-X of a, and Figure 3 is the same embodiment. FIG. 4 is a perspective view showing a conventional slider. FIG. 1...Base, 2a, 2b...
Operation buttons for channel selection, 3...Sliding board, 4...
...Frame, 5a, 5b...Guide hole, 6a, 6b...Slider, 7a, 7b
~...Retaining plate, 8...Guide pin, 9
a, 9 b~...Operating lever, 10...
・Spring, 11...Cover, 12...
...Slider, 13.14...Claw.

Claims (1)

[Scope of utility model registration request] A flat frame, a rectangular guide hole provided in the frame, a slider provided to invade into the guide hole and slide along the guide hole, and a surface of the slider. A very thin holding plate is provided so that the peripheral part is in sliding contact with one side of the frame, and a part of the holding plate is connected and fixed to the holding plate, and the sliding movement is made by manual operation of an operation button provided on the other part. 1. A preset channel selection device characterized by comprising an operation lever that slides and moves together with a slider.