JPS58171181A - Portable electronic device - Google Patents

Abstract

PURPOSE:To attain miniaturization of titled device and to improve the operability by fitting closely in line an operating knob of a switching circuit of a power supply and at least an operating knob of a sound volume adjusting variable resistor to one side of a case. CONSTITUTION:The case of a portable electronic device consists of an upper cabinet 22, a lower cabinet 23, an escutcheon 24, and an intermediate inserting part 25. The operating knob 12a of the switching circuit mechanism to open/ close the connection between a power supply and an electronic device circuit and the operating knob 13 of the sound volume adjusting variable resistor are set closely in line on one side of the case, to drive both the knobs 12a, 13 in the same direction by a sensory touching with the knobs simply.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a portable electronic device, and in particular to a driving operation means for the installation location and operation knobs of a power switch and a volume adjustment component, and each of the operation knobs protrudes from the outer surface of the casing. By installing both in a straight line and close together, the drive operation can be performed with a single touch, thereby reducing the size of the device, improving operability, and reducing costs.

A conventional portable electronic device will be explained with reference to FIGS. 1 and 2. FIG. 1 is an external perspective view of a composite electronic device in which the portable electronic device is composed of an FM/AM radio receiver and a television receiver. It consists of 2 and escutcheon 3. Then, the cathode ray tube 5. Earphone terminal 7° cent leg 9. TV selection 10. TV indicator 11. Power switch/volume adjustment knob 12° Selector switch 16. Telephone mode selector switch 16.
Contrast adjustment knob 17. Brightness adjustment knob 1B, vertical synchronization adjustment knob 19. Radio selection knob 20. A radio indicator 21 and the like are arranged. In addition, the inside of the casing includes a board configuring each circuit, a built-in speaker 8, and a built-in battery (not shown).
/Constitutes the circuits of an AM radio receiver and a television receiver. Note that 6 is a hood with a lens, and 14 is a rondo antenna. It is used not only for operating the power switch/volume adjustment knob 12 installed on the escutcheon 3, but also for selecting operation knobs for various adjustment parts. However, in this case, the operation knobs of the various adjustment parts are designed to be extremely small and lack operability, especially the power switch/volume adjustment knob 1.
In the second operation, the position of the knob 12 must be set to the power-off state [0FFJ] and the optimum volume adjustment position each time it is used.

In particular, when setting the optimum volume adjustment position, it is inconvenient and takes time to set the audio output, which changes depending on radio wave conditions and broadcast content, because it is not possible to instantly set the audio output to the optimum position. Furthermore, the variable resistor with a switch coupled to the power switch and volume adjustment knob 12 has drawbacks such as difficulty in miniaturization and a limit to cost reduction.

FIG. 2 shows an example of a portable electronic device that solves the drawbacks of the above-mentioned variable resistor for adjusting volume with a power switch. This portable electronic device is a television receiver, and its housing consists of upper cabinet 1', lower cabinet 2', and escutcheon 3.
' and a battery cover 4. Then, the cathode ray tube 6. Earphone terminal 7° set leg 9. TV selection knob 10. Telehi indicator 11. Power switch 12a, volume adjustment knob 13. Contrast adjustment knob 17. A brightness adjustment knob 18 is arranged, and a built-in speaker 8 is installed inside the housing.
and a built-in battery (not shown), which constitute the circuit of the television receiver. upper cabinet 1
It is used not only for operating the power switch 12a installed in the switch 12a but also for selecting operation knobs for various adjustment parts such as the volume adjustment knob 13.

Unlike the case shown in Fig. 1, the power switch 12a and the variable resistor for volume adjustment are constructed as separate parts, making it possible to downsize and reduce costs. Since the audio circuit and the audio circuit are separated, the power switch 12a and the volume adjustment knob 13 are separated.
It had the disadvantage that it was not easy to operate by just touching it because the locations were far apart.

By the way, portable microelectronic devices are becoming smaller.

Due to the demand for thinness and weight reduction, extremely small individual parts are used as standard parts, and for this reason, the power supply and volume adjustment knobs, which have been common in the past, are often placed separately. It has become to. As a result, various operating knobs with extremely short operating strokes are arranged on the outer surface of the housing, resulting in decreased operability and the occurrence of misuse.

The present invention solves the above-mentioned conventional drawbacks, by arranging both a power switch and a variable resistor for volume adjustment, each having an operating knob protruding from the outer surface of the casing, close to a part of the interior of the casing. The present invention aims to provide a portable microelectronic device that is installed in a straight line on one side of a housing and that can be driven and operated with a simple touch.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6. Identical parts corresponding to those in the conventional example are given the same reference numerals, and their explanations will be omitted.

FIG. 3 is an external perspective view A and a side view B of an embodiment of the present invention in which the portable electronic device is a micro-sized television receiver.
The housing of this portable electronic device is composed of an upper cabinet 22, a lower cabinet 23, an escutcheon 24, and an intermediate fitting part 26.

The main difference from the conventional example is the power switch operation knob 1.
2a and the volume adjustment operation knob 13 are arranged close to each other in a straight line on one side of the housing, and the operation directions are unified in the same direction, so that the driving operation can be performed with a single touch. Although the internal structure is not shown, various electronic components are inserted onto the printed wiring board, which is a combination of a rigid printed wiring board and a flexible printed wiring board.After the work is completed, the various electronic components are divided into circuit blocks and assembled inside the housing. I'm here.

In this case, since the flexible printed wiring board section functions as a connecting lead wire between each circuit, even if the printed wiring board is designed to have separate power supply circuits and audio circuits, they must be installed close to each other on one side of the housing. is the Nth address. Therefore, it can be easily realized without increasing costs or generating additional parts.

The power switch operation knob 12a and the volume adjustment operation knob 13 are both operated in the direction of the arrow for fly 1'' operation or edge drive operation, so they can be operated from the opening of the through hole in the lower cabinet 23 or the intermediate fitting part 25. 'A part of it protrudes outside. The surface operating portions of each of the operating knobs 12a and 13 are textured to facilitate sliding and rotating operations. The concave and convex machining on the power switch operation knob 12a may also have a structure that also serves as an indication of the setting position of the power switch. In addition, in FIG. 3B, each of the operating knobs 12a,
The operation knob base part 26 around the installation location of item 13 has a concave structure that is one step lower than the uniform surface of the casing, and a convex structure that is one step higher than the uniform surface of the casing to improve operability and prevent erroneous operation with operation knobs for other adjustment parts. You can also. The power switch operation knob 12a is slidable, and when moved to the left in the figure, the power supply circuit is connected in an OFF state.

On the other hand, when the device is moved to the right, the device is connected in an operational state. Further, the volume adjustment operation knob 13 performs an edge drive operation, and is connected so that the volume changes greatly when operated in the direction of cloth fl111 in the figure, and decreases when operated in the opposite direction.

This configuration takes advantage of the one-touch operability that is characteristic of the conventional power switch/volume adjustment knob, while also having the advantage of being compact, with the power switch and volume adjustment variable resistor being constructed as separate parts. It is also possible to realize reductions in size, thickness, and weight.

FIGS. 4 to 6 show other embodiments of the present invention, and the difference from the embodiment shown in FIG. 3 is that the portable electronic device 'I! +'f is a composite electronic device consisting of an FM/AM radio receiver and a television receiver, and the power switch is used as a selector switch to switch between 0FF, radio, and television. Of course, the same effects as in the above embodiment can be obtained by using only the above-mentioned method.

FIG. 4 is a perspective view A and a side view B of the external appearance of the FM/AM radio receiver and the television receiver, which are made into portable composite electronic devices, and in this case, the casing has an upper cabinet 31 and a lower cabinet 32. It is composed of an escutcheon 33 and an intermediate fitting part 34.

The operating knob base 35 is located around the installation location of the power selector switch operating knob 12b and the volume adjustment operating knob 13, and the arrangement thereof is the same as that of the embodiment shown in FIG. 3, so a description thereof will be omitted. . 36 is a radio tuning knob, 37 is a radio indicator, and 38 is an FM/AM band selection switch.

B9 is a stereo/monaural changeover switch.

By moving the power selector switch operation knob 12b in the direction of the arrow, the power goes from the OFF state to the operating state of the radio receiver (as shown in Figure 4 (B)) and then to the operating state of the television receiver. It is possible to perform an operation to switch between the two. FIG. 5 is a block diagram showing the connection state of the selector switch circuit, and FIG. 6 is a diagram showing the installation state of the selector switch and the total circuit current.
2b via the movable terminal 12C, 0FF-1 is selected as either the radio receiver dedicated circuit 63 or the audio circuit 52 and electrically It is something that is connected. IR when the radio receiver is in use.

When the television receiver is in use, each operating current of It is supplied from the power supply circuit 50 for operation.

Usually, the relationship is It〉WorkR, and Il is about several times the WorkR.

The most distinctive feature of the configuration shown in Figure 4 is the connection relationship of the selector switch for load 0FF4- + radio ←
The maximum disconnection capacity of the selector switch can be set to (It IR) and R by setting the order arrangement for the TV.
This makes it possible to use inexpensive switches. When using switches of the same capacity, it is possible to increase the reliability and extend the lifespan. Increasing the cutting capacity of a slide selector switch requires many difficult conditions due to the structure of the switch, which increases costs. The substantial reduction in maximum cutting capacity due to this is an extremely economical method of use. Further, although not shown in the drawings, it has become common for portable electronic devices to use built-in batteries. This is not a problem if the built-in battery is new, but if it has been used for a long time, it may not be possible to obtain the specified output voltage even if the connection is made from a heavy load condition to a light load condition. It is possible to confirm this and move on to heavy-load connections, and the practical effect is extremely large.

As is clear from the above description of the embodiments, according to the present invention,
An electronic device circuit is configured by an electronic circuit including a power source inside the casing, and both an operating knob of a switch circuit configuration that opens and closes a connection between the power source and the electronic device circuit and an operating knob of a variable resistor for adjusting volume. , are installed close to each other and on the same straight line on one side of the casing, and both the knobs can be driven in the same direction with a single touch, thereby creating an ultra-compact portable electronic device with excellent operability. The device can be provided at a low cost. Furthermore, in the case of complex electronic equipment, arranging the connection of the selector switch in the power supply switching circuit so that it can be switched from no load to light load and then heavy load greatly contributes to the realization of economical design, making it practical. The effect is extremely large.

[Brief explanation of the drawing]

Figure 1 is an external perspective view of a conventional portable electronic device; FIGS. 4A and 4B are external perspective views and side views of a case where the portable electronic device according to an embodiment of the invention is a micro-sized television receiver, and FIGS. 6 is a block diagram showing the connection state of the selector switch circuit in FIG. 4. FIG. 3 is a diagram showing the relationship between the setting state of the selector switch and the total circuit current. 2231... Upper cabinet, 23.32...
...Lower cabinet, 24.33--Escutcheon, 12a, 12b...Control knob for power switch, 12c...Movable terminal, 13...
...Volume adjustment knob, 26.35...
Operation knob base section, 60...Power circuit, 61.
... Radio receiver dedicated circuit, 62 ... Audio circuit, 53 ... Television receiver dedicated circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Figure 4 (81 - Figure 5 Figure 6 OFF
ON

Claims (2)

[Claims] (1) An electronic device circuit is configured by an electronic circuit including a power source inside the casing, and an operating knob of a switch circuit that opens and closes the connection between the power source and the electronic circuit and various adjustment parts that configure the electronic device circuit. At least the operating knobs of the volume adjusting variable resistor in the operating recess are installed on one side of the housing close to each other and on the same straight line, so that the driving operation of both the knobs can be performed in the same direction. A portable electronic device characterized by: (2) The electronic device circuit is complexed with multiple electronic circuits with different functions, and the operation knobs of the switch circuit and the audio adjustment variable resistor are not driven.
The portable electronic device according to claim 1, wherein the portable electronic device is arranged in the order of FF-light load, single load, and volume adjustment.