JPH0322938Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention enables, for example, the final fine-tuning of electronic equipment after the product is completed, or the adjustments made during repair, to be made from outside the electronic equipment. It is related to electronic equipment.

[Conventional technology]

In general, in portable audio equipment, when the output voltage increases above a certain level, the cabinet vibrates in accordance with the output, which tends to cause so-called howling. For this reason, conventionally, in this type of audio equipment, a semi-fixed resistor for output adjustment has been provided to adjust the output voltage and prevent howling. However, since the semi-fixed resistor for output adjustment in this case is installed inside the cabinet, adjustment work is difficult, and especially when readjusting after the product is completed, the chassis must be removed from the cabinet each time. The adjustment was extremely troublesome.

Therefore, we made a hole in a part of the cabinet, used a screwdriver, etc. to adjust the internal semi-fixed resistance, and after adjustment, we put a sticker over the hole, or put a rubber,
Alternatively, they were blocked with resin or other debris, but these methods require a large number of steps and are unsightly.

Fig. 4 is a structural diagram showing a conventional example of a portable audio device (see Japanese Utility Model Publication No. 16190/1983) that has been improved in this respect. 3 is a through hole formed in the bottom of the battery accommodating portion 2; 4 is a contact piece that comes into contact with a battery (not shown); 5 is a battery accommodating portion provided in the battery accommodating portion 2; Lid, 6
1 is a speaker mounted upward on the top surface of the cabinet 1; 7 is a net mounted on the top surface of the cabinet 1; 8 is a chassis housed in the cabinet 1; 9 is connected to the inside of the chassis 8 via a shaft 10. 11 is a pulley fixed to the shaft 10; 12 and 13 are printed circuit boards mounted on the chassis 8 in a substantially L-shape; 14;
15 is a semi-fixed resistor for adjusting the output voltage attached to one end of the printed circuit board 12; 15 is an operating knob for adjusting the volume; 16 is provided to be movable in the vertical direction, and is driven in the vertical direction by operating the operating knob 17; This is a switching lever that controls turning on and off of a motor (not shown) by being turned on and off.

In this conventional example, a through hole 3 is provided at the bottom of a battery storage section 2 provided in a part of a cabinet 1, and an adjustment section of a semi-fixed resistor 14 fixed to a printed circuit board 12 is placed on an extension of this through hole 3. Even after the product is completed, the lid 5 of the battery compartment 2 can be removed and the through hole 3 can be removed from the battery compartment 2 using a screwdriver.
The semi-fixed resistor 14 can be easily adjusted via.

[Problem that the invention attempts to solve]

However, in the configuration of this conventional example, the battery storage section 2
This is limited to certain portable devices, and the lid 5 of the battery storage section 2 and the battery must be removed during adjustment.

Furthermore, since the battery is removed, there is a problem in that an additional power supply means is required during adjustment.

This invention was made in order to solve these problems, and provides an electronic device in which the rotary adjustment parts can be easily adjusted without disassembling the finished product, and the appearance is not damaged. The purpose is to

[Means for solving problems]

This idea uses standard jacks, mini jacks, pin jacks, etc. installed in the cabinet of electronic equipment, whose input/output terminal plug insertion holes penetrate to the inside, and a rotary adjustment component is installed on the extension of the insertion hole. Place.

[Effect]

In this invention, the plug insertion hole for the input/output terminal of a standard jack, mini jack, pin jack, etc. provided in the cabinet of an electronic device is formed so as to penetrate into the inside, and the plug is placed inside the cabinet using a screwdriver etc. through the insertion hole. Since the rotary adjustment parts are adjusted, adjustments can be easily made without damaging the appearance or disassembling the finished product.

〔Example〕

Figure 1 is a partially cutaway structural diagram of a portable cassette recorder showing one embodiment of this invention.
1 is a cabinet of a portable cassette recorder, 22 is a cassette tape set inside the portable cassette recorder, 23a, 23b,
Reference numerals 23c, 23d, and 23e indicate operation switches for the portable cassette recorder provided outside the cabinet 21, and 24 indicates a printed circuit board provided inside the cabinet 21. Although not shown, a plurality of electronic components are mounted on the printed circuit board 24. is located. 25 is the volume adjustment volume, 2
Reference numeral 6 denotes a headphone jack disposed on the printed circuit board 24 or the cabinet 21, and its plug insertion hole is formed to penetrate from the outside of the cabinet 21 toward the inside. 27
is a rotary adjustment component disposed on the printed circuit board 24 in an extension of the plug insertion hole of the headphone jack 26. This rotary adjustment part 27
is, for example, a semi-fixed variable resistor or variable impedance component, and in the case of FIG. 1 indicates a volume for adjusting tape speed.

FIG. 2 is an enlarged view showing the positional relationship between the headphone jack 26 and the rotary adjustment component 27 on the printed circuit board 24. In the figure, the same reference numerals as in FIG. 2 shows an adjustment driver for adjusting the equation adjustment component.

In the electronic device of this invention, as shown in Fig. 1, the headphone jack 26 and the rotary adjustment part 27 for adjustment are arranged on the same line, so that final fine adjustments can be made after the product is completed. 2, insert the adjustment driver 28 through the plug insertion hole of the headphone jack 26 and turn the rotary adjustment component 27 located on the extension of the plug insertion hole. You can make adjustments by moving the

In this embodiment, the headphone jack 26
The adjustment driver 28 is inserted from the beginning, but the jack into which the adjustment driver 28 is inserted can be a standard jack, mini jack, or other headphone jack, as well as a standard jack for microphone input, a mini jack, or a mini jack for line input/output. , pin jacks, remote control terminals, etc., if the insertion hole of the mating plug is penetrated to the inside, the same effect can be achieved by placing the rotary adjustment part 27 on the extension. You can have it.

The adjustment driver 28 is preferably formed of an insulating material so as not to generate noise even if it touches the contacts in the insertion hole. A plug driver can also be used.

This plug driver has a small insulated driver 30 attached to the tip of a plug 29 that has a normal function.
The rotary adjustment component 27 can be rotated by rotating the entire plug with respect to the plug insertion hole.

Although this embodiment has been described with reference to a portable cassette recorder, it goes without saying that the present invention can also be applied to other electronic devices such as portable televisions, radios, compact disc players, and electronic musical instruments.

[Effect of idea]

As mentioned above, this invention is designed to penetrate the plug insertion hole of the input/output terminal of a standard jack, mini jack, pin jack, etc. provided in the cabinet of an electronic device to the inside, and to insert the plug into the cabinet through this through hole. Since the rotary adjustment parts placed inside are adjusted using a screwdriver, etc., adjustments can be made easily without damaging the appearance of the electronic device itself, and without disassembling the finished product or the product for repair. effective.

[Brief explanation of drawings]

Figure 1 is a partially cut away structural diagram of a portable cassette recorder showing one embodiment of this invention;
The figure is an enlarged view showing the positional relationship between the headphone jack and rotary adjustment parts on the printed circuit board, Figure 3 is a side view of the plug driver, and Figure 4 is a structural diagram showing a conventional example of portable audio equipment. . In the figure, 21 is a cabinet, 22 is a cassette tape, 23a, 23b, 23c, 23d, 23e
24 is a printed circuit board, 25 is a volume adjustment volume, 26 is a headphone jack, 27 is a rotary adjustment component, 28 is an adjustment driver, 29 is a plug, and 30 is a driver.

Claims (1)

[Scope of utility model registration request] An electronic device characterized in that a plug insertion hole for an input/output terminal provided in a cabinet is formed in a penetrating type, and a rotary adjustment part is arranged on an extension of the plug insertion hole.