JPS6228146Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to audio equipment, and in particular to an improvement of a cabinet device thereof.

Generally, portable audio equipment such as radio cassette recorders have a separate cabinet with a front cabinet and a back cabinet, and the two are joined together when assembled. .

Figure 1 shows the configuration of the joints that have been conventionally employed in such cabinets.The front cabinet 11 is made of plastic.
Bosses 111 and 121 are respectively provided upright at corresponding portions of the back cabinet 12 (for example, at each corner), and screwed together with screws 13 inserted from the back side of the back cabinet 12.

On the other hand, in this type of audio equipment, it is necessary to install a speaker in the cabinet, and conventionally, the front cabinet 11 or the back cabinet 12 is installed in the cabinet configured as described above.
A speaker (not shown) was attached to either side of the connector, regardless of the connection portion between the two.

However, in the conventional configuration as described above, the connecting portion between the front cabinet 11 and the back cabinet 12 is connected to the back cabinet 12.
Since the screw 13 is inserted from the back side of the speaker and screwed together, the workability is poor, and since the screw 13 is inserted from the rear side of the speaker, it is not efficient.

In addition, especially regarding the latter, the cabinet is susceptible to vibrations due to the influence of sukkah, and undesirable phenomena such as so-called rattling and howling phenomena are also induced, resulting in deterioration of sound quality, which is unique to this type of equipment. It also led to shortcomings.

However, in recent years, even this type of equipment has been required to be hyphenated, so resolving the above-mentioned drawbacks has been an urgent issue.

Therefore, this idea was made in view of the above points, and it is possible to insert decorative screws from the front side of the front cabinet and fasten the speakers to the joints with the front cabinet and back cabinet. It is an object of the present invention to provide a cabinet device for audio equipment which is configured so that the drawbacks of the conventional device can be simply and reliably overcome by attaching the device to the device.

An embodiment of this invention will be described in detail below with reference to the drawings.

That is, in FIG. 2, numerals 21 and 22 are a front cabinet and a back cabinet, which are respectively molded from plastic, for example. Among these, in a predetermined part on the front cabinet 21 side, there is a relatively large stepped through hole 212 that matches the diameter of the speaker, which will be described later, and a stepped through hole 212 that is bored at a predetermined interval (for example, 90 degrees) around the through hole 212. A plurality of mounting holes 213 (only one is shown) are formed, and around the mounting holes 213, a decorative ring guide portion 214 is formed on the outside and a speaker guide portion 215 is formed on the inside.

In addition, on the back cabinet 22 side, a plurality of bosses 221 (only one location is shown) are provided on the front panel in a positional relationship corresponding to each mounting hole 213 of the front cabinet 21, leaving the frame thickness of the speaker described later. It is formed to have a predetermined length approaching the cabinet 21 side. In this case, a metal fitting 222 having a female thread is insert-molded at the tip of each boss 221.

Therefore, the front cabinet 2 as described above
1 and the back cabinet 22, and to house the speaker 23 therein, first, a punching metal 24 with a dome-shaped cross section and many small holes for protecting the speaker is inserted inside the front cabinet 21. The edge portion of the punching metal 24 is inserted into the stepped through hole 212 from the bottom to the stepped through hole 212.
It is in a state where it engages with the stepped part.

Next, with the frame 231 of the speaker 23 being guided by the speaker guide part 215 inside the front cabinet 21, the boss 221 of the back cabinet 22 is brought into contact with it from below. In this case, it goes without saying that each mounting hole 213 of the front cabinet 21, each mounting hole 231a in the frame 231 of the speaker 23, and each boss 221 correspond to each other.

In this state, the front cabinet 21
The decorative ring 25 is guided to the decorative ring guide portion 214 of the decorative ring 25, and a decorative screw 26 having a hexagonal head, for example, is inserted from the front side of the front cabinet 21 into the stepped mounting hole 251 formed in advance in the decorative ring 25.
into the back cabinet 22.
Screw it into the metal fitting 222 provided on the side boss 221.

As a result, the speaker 23 can be connected at the joint between the front cabinet 21 and the back cabinet 22.
are attached in a co-tight manner.

That is, in the cabinet device of the above embodiment, the front cabinet 21, the speaker 23, and the back cabinet 22 are sandwiched together by the decorative screw 26 inserted from the front side of the front cabinet 21. Since the structure is integrally screwed together, the workability is improved and it is also efficient. In particular, the front cabinet 21 and the back cabinet 2
By attaching the speaker 23 in relation to the joint with the cabinet 2, the three parts can be organically connected and firmly fixed, thereby eliminating unnecessary vibrations of the entire cabinet. In addition, it is possible to suppress the occurrence of chatter and howling phenomena, thereby contributing to an effective improvement in sound quality, and making it possible to fully meet the demands of hyphen technology.

In the above, in practice, the number of bosses 221 is 2 to 2.
Even if the number of coupling points between the front cabinet 21 and the back cabinet 22 is reduced to about 3, or about 1 or 2, there is often no problem in terms of strength (especially in stereo type speakers that use a pair of left and right speakers) ).

And like this, the front cabinet 21
If the number of joints between the back cabinet 22 and the back cabinet 22 is reduced, the number of decorative screws 26 that can be fastened to the speaker 24 section will also be reduced, so the remaining speaker 24 mounting section should be connected as shown in Figure 3a. Alternatively, a configuration may be adopted in which a tapping screw 27 with a seat is used from the inside of the front cabinet 21 to screw it into a corresponding portion of the decorative ring 25'. In other words, use the tapping screw 27 with a seat in advance to attach the speaker 23 to the front cabinet 21 side.
After fixing it in three places, use the decorative screws 26.
This configuration is extremely practical because the one or two mounting portions of the speaker 23 that remain at the joint between the front cabinet 21 and the back cabinet 22 are tightened together from the front side of the front cabinet 21 using the screws. .

Furthermore, in this case, as shown in FIG. 3b, if an integrated or separate dummy decorative screw 28 is provided at the corresponding part of the decorative ring 25'' corresponding to the attachment part by the seated tapping screw 27, the appearance will be improved. This gives the impression that all the speaker mounting parts are fixed using decorative screws, so that the appearance does not deteriorate.

FIG. 4 shows another embodiment, in which for some reason (for example, the size of the cabinet itself is increased), a boss 221' provided on the back cabinet 22' side is attached to the front cabinet 21 and speaker 23. If the length is not long enough to allow direct contact with the frame 231, a metal fitting 29 is used as a relay, but other than that, the structure is the same as in the case of FIG. 2.

FIG. 5 shows an example of implementing the above-mentioned cabinet device according to the invention, in which it is applied to a stereo radio cassette recorder.
1 is a tape recorder section, 32 is a radio section, 34,
35 is a pair of left and right speaker sections. In the pair of left and right speaker parts 34 and 35, 341 and 351 are decorative rings, respectively, and 34
2, 352, as described above, the front cabinet 2 is fastened together with the speaker 23 at the joint between the front cabinet 21 and the back cabinet 22.
This is a decorative screw that screws together from the front side of 1.

It goes without saying that this invention is not limited to the embodiments and implementation examples described above and illustrated, and that various modifications and applications can be made without departing from the gist of this invention.

Therefore, as detailed above, according to this invention, the decorative screws are inserted from the front side of the front cabinet to attach the speaker to the joint with the front cabinet and the back cabinet together. By adopting a structure in which the present invention is installed, it is possible to provide an extremely good cabinet device for audio equipment that has been improved so that the conventional drawbacks in terms of workability, efficiency, and sound quality can be easily and reliably eliminated. .

[Brief explanation of drawings]

FIG. 1 is a cutaway sectional view of the main parts showing a conventional cabinet device, FIG. 2 is a cutaway sectional view of the main parts showing an embodiment of the cabinet device for audio equipment according to this invention, and FIGS. b is a cutaway sectional view of the main part showing a different modification of the one shown in FIG. 2, FIG. 4 is a cutaway sectional view of the main part of another embodiment of this invention, and FIG. FIG. 2 is an external perspective view showing an example of implementation applied to a stereo radio cassette set. 21...Front cabinet, 22...Back cabinet, 221...Boss, 23...Speaker, 2
31... Frame, 25... Decorative ring, 26... Decorative screw, 24... Punching metal.

Claims (1)

[Scope of utility model registration request] A front cabinet and a back cabinet, a speaker housed inside the combination of the front cabinet and the back cabinet, and a speaker that is screwed together from the front side of the front cabinet and connected to the front cabinet and the back cabinet. A cabinet device for audio equipment, comprising a decorative screw for fastening the speaker together at a connecting portion of a back cabinet.