JPH0746547B2 - Switching display device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch display device for a switch of a communication device such as a radio receiver.

2. Description of the Related Art Generally, in a switching display device in which a switch and a switching display are simultaneously driven by a knob, as shown in FIGS. 4 and 5, the knob 21 includes a guide rib 22 provided on a chassis 26.
It is arranged between the guide ribs 22 and can be moved left and right along the guide ribs 22. The guide rib 22 has a locking claw 22a
Is formed, and the knob 21 is fitted and locked. The drive pin 21a formed at one end of the knob 21 is fitted with the elongated hole 23a formed in the drive lever 23, and the elongated hole formed at the other end of the elongated hole 23a.
The button 27a of the switch 27 is fitted to 23b. Long holes 23a, 23
Place the center of rotation 23d of the drive lever 23 between the
The drive lever 23 is fitted and locked to the elastic shaft 26a provided on the rotator so as to rotate. A pin 23c is provided at the tip of a tongue piece 23e integrally formed from the drive lever 23, a long hole 24a opened at one end of the lever 24 is arranged so as to be fitted therein, and a long hole 24b opened at the other end is provided with a chassis. A shaft 25a of the indicator 25 guided by a guide 26c provided on the 26 is fitted. A rotation center 24c is formed between the long holes 24a and 24b formed at both ends of the lever 24, and the lever 24 rotates around this center. Center of rotation 24
An elastic shaft 26b provided on the chassis 26 is formed in the portion c so that the lever 24 can be fitted and locked.

In the switching display device configured as described above, when the knob 21 is moved to the left or right, the drive lever 23 fitted to the drive pin 21a rotates about the rotation center 23d. When the drive lever 23 rotates, the button 27a of the switch 27 fitted in the long hole 23b operates and the contact of the switch 27 is switched. Furthermore, at this time, the pin 23c provided at one end of the drive lever 23 also simultaneously operates to move the lever 24,
The indicator 25 slides along the guide 26c through the shaft 25a fitted in the elongated hole 24b to rotate about the rotation center 24c.

The indicator 25 thus operated is a transparent panel 28 which is printed with a transparent portion left on the back surface as shown in FIG.
When viewed through, the switching position is displayed.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a switching display device, since the drive lever becomes large and thick, it is very inconvenient for a small set. In addition, there is a problem that the work takes time because of the large number of parts.

Furthermore, since the button of the switch is driven by the knob via the drive lever, the switching contact of the switch deviates from the normal position due to the dimensional accuracy of the drive lever and the knob.
There were also problems such as the set not working.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a reliable switching display device with a simple structure.

Means for Solving the Problems The present invention provides a drive lever that operates an indicator slidably locked to a guide provided on a chassis with a drive pin provided at the tip of a tongue piece integrally formed from a knob, The switch is directly driven, and a switch button is inserted into a fitting hole provided in the knob, and the switch directly drives the switch.

Since the switching display device of the present invention is configured as described above and directly drives the switch, the switching contact of the switch may be deviated from the normal position due to the dimensional accuracy of the drive lever and the knob, resulting in malfunction. Since there is no such problem, the switch can be switched reliably and the drive lever is directly driven, which has the advantage that only one drive lever is required.

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the embodiments show an example applied to a radio receiver.

In FIG. 1, an indicator 1 is slidably fitted and locked to a guide 2a provided on a chassis 2. A pin 1a is formed on the indicator 1, and the pin 1a is inserted into a long hole 3a formed at one end of a drive lever 3 having a long side shape. A round hole 3b serving as a center of rotation is formed at the other end of the drive lever 3, and an elastic shaft 2b integrally formed with the chassis 2 is fitted and locked in the round hole 3b. A long hole 3c is formed between the round hole 3b and the long hole 3a of the drive lever 3,
A drive pin 4b provided at the tip of a tongue piece 4a integrally formed from the knob 4 is inserted into the long hole 3c.

A fitting hole 4c into which the button 5a of the switch 5 is inserted is formed near the operation portion 4e of the knob 4 so that the button 5a can be directly driven.

The switch 5 is soldered to the printed wiring board 6, and the chassis 2 is mounted on the front cabinet 7 together with the printed wiring board 6.
And the back cabinet 8 are fixed with screws. The knob 4 is slidably locked to the chassis 2 by its elastic claw 4d, and the tip of the tongue 4a is slidably locked by a claw 2c formed on the chassis. A scale plate 9 is attached to the surface of the chassis 2 with double-sided tape, and a through hole 9a is formed in the scale plate 9 at a position corresponding to the movement of the indicator 1.
The indicator 1 through the through hole 9a and the transparent panel 10
Can be seen.

The printed wiring board 6 is provided on the tongue piece 4a of the knob 4 and the chassis 2.
While adjusting the electric components 14 etc. soldered to the above, the through holes 2e, 4f are opened so that the adjustment driver can be inserted, and the adjustment can be made at the predetermined position of the knob 4. You can do it.

As shown in FIG. 3, a sheet metal 13 having an uneven surface is insert-molded on a part of the knob 4, and a hole 2d is formed in the chassis 2 at a position corresponding thereto, and a spring is formed in the hole 2d.
12 and the steel ball 11 are inserted, and the steel ball 11 is constantly pressed against the sheet metal 13. Further, the switch 5 is designed to move smoothly even if the button 5a is operated by itself.

In the switching display device configured as described above, when the operation portion 4e of the knob 4 is operated, the button 5a of the switch 5 moves, and at the same time, the drive pin 4b formed at the tip of the tongue piece 4a of the knob 4 causes the drive lever 3 to move. Rotates around the round hole 3b as the center of rotation. At this time, the indicator 1 is operated by the pin 1a of the indicator 1 inserted into the tip of the drive lever 3. When the knob 4 is operated again, the sheet metal attached to the knob 4
Moderation is created between the unevenness of 13 and the steel ball 11, and the button of the switch 5
5a and the indicator 1 can be fixed in place.

As described above, according to this embodiment, the button 4a of the switch is inserted into the fitting hole 4c provided in the vicinity of the knob 4,
Since the knob 4 directly drives the switch button 5a, the switch can be reliably switched, and the drive pin 4b of the tongue piece 4a drives the drive lever 3 that drives the indicator 1 about the elastic shaft 2b. The indicator 1 can be slid over a wide range by a slight movement of the knob 4, which can contribute to downsizing of a set such as a radio receiver.

As described above, in the switching display device of the present invention, the switch button is inserted into the fitting hole provided in the vicinity of the operation portion of the knob, and the switch button is directly driven by the knob. It is possible to reliably switch the switch without deviating from the regular position.

Further, according to the present invention, the drive pin provided at the tip of the tongue piece integrally formed with the knob has the elongated hole of the drive lever in which the pin provided on the indicator is inserted around the elastic shaft provided on the chassis and The indicator is driven through the drive lever by being inserted into the second long hole of the drive lever between the elastic shafts, so that the indicator is slid over a wide range by a slight movement of the knob. Therefore, clear switching display can be performed. Further, according to the present invention, since the amount of movement of the knob is smaller than the amount of movement of the indicator, it is suitable for downsizing of the set, and since the number of parts is small, it is possible to realize a switching display device which can be easily manufactured. .

[Brief description of drawings]

FIG. 1 is a sectional view of a switching display device according to an embodiment of the present invention, FIG. 2 is a schematic front view of main parts of the device, FIG. 3 is a partial sectional view of the device, and FIG. FIG. 5 is a front view of the display device, and FIG. 5 is a sectional view of the device. 1 ... Indicator, 1a ... Pin, 2 ... Chassis, 2a
…… Guide, 2b …… Elastic shaft, 3 …… Drive lever, 3a ……
Long hole, 3b …… Round hole, 4 …… Knob, 4a …… Tongue, 4b ……
Drive pin, 4c ... Fitting hole, 5 ... Switch, 5a ... Button,
6 ... Printed wiring board.

Claims (1)

[Claims] 1. An indicator slidably fitted and locked to a guide provided on a chassis, a drive lever, and a pin provided on the indicator which is inserted into an elongated hole formed at one end of the drive lever. An elastic shaft provided on the chassis formed by fitting and locking the rotation center of the other end of the drive lever,
A drive pin provided at the tip of a tongue formed integrally with the knob, which is inserted into a second slot formed between the slot of the drive lever and the center of rotation, and operation of the tab. A switching display device comprising a switch button inserted into a fitting hole provided in the vicinity of the section.