JPS6322378B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a portable stereo sound reproduction device formed into an ultra-compact size.

Conventional configurations and their problems A generally well-known portable stereo sound reproducing device is one in which speakers for left and right channels are mounted on the right side of the cabinet, and a recess for storing a cassette and a cassette mechanism block are provided in the center. . However, although these types of devices are portable, they are very large, and there are also known ultra-small portable stereo sound reproduction devices that can be carried around the waist or stored in a pocket. However, because these types of devices have ultra-small cabinets, they often do not have speakers for each left and right channel, so if you want to listen to stereo playback, you must use a separate headphone. There was a problem.

Purpose of the Invention The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks, and to make the cabinet ultra-miniaturized, and furthermore, to construct the cabinet so that speakers for each of the left and right channels can be easily installed in the cabinet. That is.

Structure of the Invention The present invention provides a cassette lid which can be opened and closed at the center of the front of the cabinet, and a recess for storing the cassette and a cassette mechanism block inside the lid, as well as sound emitting parts provided on both sides of the cabinet. A vertically elongated flat-plate type speaker with a voice coil section offset to one side is housed in the cabinet facing the sound section, and a cassette mechanism block is installed in the rear space of the flat-plate section of the speaker that does not have the voice coil section. A more protruding motor section and dial block are arranged, and vertically long flat speakers are placed close to both sides of the cassette storage recess, making effective use of the back of the flat plate section that does not have a voice coil section. Because of this, it is possible to make it as miniaturized as possible.
It also has the advantage of being capable of stereo reproduction using built-in speakers.

DESCRIPTION OF THE EMBODIMENTS The figure shows an embodiment of the portable stereo sound reproduction device of the present invention. In the figure, reference numeral 1 denotes a main body of the cabinet, in which a cassette mounting part 2 is formed at the center of the front surface, and speaker sound emitting parts 3a and 3b are formed on both sides. The cassette mounting section 2 is provided with a cassette lid 4 that can be opened and closed.The cassette lid 4 has a shape that is approximately the same as the vertical width of the cabinet body 1 and almost completely covers the cabinet body 1 when viewed from the front. It is formed. The speaker sound emitting section 3 is formed in a vertically elongated shape with approximately the same dimensions as the vertical dimensions of the cassette lid, and has a rectangular sound emitting hole 7 provided in the front cabinet 6.
It consists of a speaker 8 attached inside and a net 9 attached to the front. The cassette lid 4 has a see-through window 10 for confirming tape winding as well as a see-through window 11 for displaying a dial at a position offset to one side, and a dial scale plate 12 is attached to the back of the see-through window 11 for dial display. The pointer 13 is configured so that it can be seen through. Note that the pointer 13 is driven by operating a dial operating knob 14.

FIG. 2 is a perspective view of the cassette lid 4 in an open state, and a cassette storage recess 15 is provided within the area covered by the cassette lid 4. As shown in FIG. and,
Opposing this recess 15, a long hole 17 is formed within the cabinet 1 within the range covered by the cassette lid 4 of the front cabinet 6 in which a predetermined cassette drive device such as a reel shaft 16 is housed. 1
The pointer 13 is configured to be visible through the pointer 7. The long hole 17 is formed at the cassette lid 4.
The pointer 13 provided on the front cabinet 6 is located at a position corresponding to the see-through window 11 provided on the cassette lid 4.
Even when closed, it can be seen from the outside.

FIG. 3 is a longitudinal sectional view of the right side sound emitting part 3a in FIG. 1, and FIG. 4 is a longitudinal sectional view of the left side sound emitting part 3b. In FIG. 3, the speaker 8 is a rectangular flat plate speaker having a rectangular flat diaphragm 18, and is located at a biased position at the rear (downward in the illustrated example).
A voice coil section 19 is provided in the voice coil section 19, and is attached by tightening and fixing mounting frames 20 provided at both upper and lower ends to bosses 21 provided on the front cabinet 6 with screws 22. A chassis 24, a variable capacitor 25, and a dial drum 2 are mounted on a printed circuit board 23 in a rear space of the flat plate portion of the speaker 8 that does not have the voice coil portion 19.
6, a dial block portion consisting of a pulley 27, the dial operation knob 14, etc. is arranged;
A dial rope 28 wrapped around them is connected to the pointer 13. In FIG. 3, 29 is a rear cabinet, 30 is a battery storage section, and 31 is an aluminum decorative plate provided on the front cabinet 6.

In FIG. 4, the speaker 8 has the same structure as that shown in FIG. 3, but is installed in reverse so that the voice coil section 19 faces upward. Therefore, the lower side has only a flat plate part, and the back space of this flat plate part consists of a motor 33 and its mounting plate 34 that protrude from a cassette mechanism block 32 provided opposite to the cassette storage recess 15. A motor section is located. A second printed circuit board 35 configuring a motor drive circuit and the like is attached to the mounting plate 34 of the motor 33.

FIG. 5 is an explanatory diagram showing the relationship between the blocks when viewed from the front with the front cabinet 6 removed. In Fig. 5, 36 is the recess 1 for storing the cassette.
Cutting mechanism block 32 provided in 5
The chassis serves as a base on which the cassette operation button 5, reel shaft 16, etc. are attached, and constitutes a cassette mechanism block 36. A motor mounting plate 34 is integrally provided on the cassette mechanism block 36 and projects laterally, and the motor 33 is mounted on the mounting plate 34. Further, the guide 37 of the pointer 13 connected via the dial rope 28 on the dial block side is arranged between the right side speaker 8 and the right end of the cassette mechanism block 36, so that the pointer 13 is connected to the cassette lid 4 as described above. The vehicle is configured to be able to run in response to the dial display transparent window 11 of the vehicle. In FIG. 5, numeral 38 indicates the mounting position of the left and right microphones, and numeral 39 indicates a counter.

Effects of the Invention The present invention provides a cassette lid that can be opened and closed at the center of the front face of the cabinet, a cassette mechanism block inside the lid, and a vertically elongated cassette lid on both sides of the cabinet, each having a voice coil section biased to one side. When flat speakers are mounted, a motor part protruding from the cassette mechanism block and a separately provided dial block are arranged in the rear space of the flat part of these speakers, avoiding the voice coil part of the speaker. By effectively utilizing the space on the back, the overall size of the cabinet can be significantly reduced, and even though it has built-in speakers for each left and right channel, it can be carried by hanging it on the waist or storing it in a pocket. This has the advantage that it can be made into an ultra-small stereo device. As shown in the example, when a dial display pointer guide section is provided between the recess for storing the cassette and the speaker sound emitting section, and a see-through window for dial display is provided at the corresponding position, it is possible to use the device in a narrow space. Moreover, it is possible to construct an ultra-compact stereo sound reproducing device with a radio while maintaining the overall balance by providing the speaker sound emitting portions close to both sides of the cassette lid, which further increases the effect.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of an embodiment of the portable stereo sound reproduction device of the present invention, Fig. 2 is a partial perspective view of the same embodiment with the cassette lid open, and Fig. 3 is a sound emitted from the right speaker. Sectional view of part 4
The figure is a sectional view of the left speaker sound emitting section, and FIG. 5 is an explanatory layout diagram for explaining the layout inside the cabinet. 1... Cabinet body, 2... Cassette mounting part,
3a, 3b...Speaker sound emitting part, 4...Cassette lid,
5...Cassette operation button group, 6...Front cabinet,
7...Sound emission hole, 8...Speaker, 10...See-through window for tape winding confirmation, 11...See-through window for dial display, 13
...Pointer, 14...Dial operation knob, 15...Cassette storage recess, 18...Rectangular plane diaphragm, 19...
Voice coil section, 25...Variable capacitor, 26...Dial drum, 28...Dial rope, 32...Cassette mechanism block, 33...Motor, 34...Mounting plate, 37...Dial pointer guide.

Claims (1)

[Scope of Claims] 1. A cassette lid that can be opened and closed is provided in the center of the front of the cabinet, and a recess for storing the cassette and a cassette mechanism block are provided inside the lid, and vertically elongated sound emitting parts are provided on both sides of the front of the cabinet. , a rectangular plane diaphragm is formed on the inner surface of the cabinet facing the sound emitting part,
A flat speaker with a voice coil section offset to one side vertically is installed, and the protruding motor section of the cassette mechanism block is placed in the space on the back side of the flat diaphragm that does not have the voice coil section of one of the speakers. 1. A portable stereo sound reproducing device in which a dial block part is arranged in a space on the back side of a plane diaphragm that does not have a voice coil part of the other speaker. 2 A dial display pointer guide section is provided between the cassette storage recess and the other speaker sound emitting section, and a dial display see-through window is provided at a position opposite to the pointer guide section of the cassette lid. A portable stereo sound reproduction device according to claim 1.