JPS6035346Y2 - composite speaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a composite speaker in which, for example, a horn and tweeter section are coaxially incorporated in a woofer section.

Conventionally, for example, a composite speaker with a horn tweeter built into the woofer is divided into a horn and a driver unit, and most horn tweeters have an equalizer on the horn side, and a dust prevention device for a composite horn speaker with this structure has been used. There were those shown in Figures 1 and 2.

Of these, the one shown in Figure 1 is the driver unit 18.
A dustproof net 19' made of natural fibers or synthetic resin fibers is stretched between the diaphragm 13 and the equalizer 14, and the one shown in FIG. It was pasted.

By the way, in the horn tweeter section B shown in FIG. 1, a dustproof net 19' is stretched between the equalizer 14 and the diaphragm 13 in a gap of 1 mm or less, so the frequency characteristics vary widely and the sound quality tends to change. and net 19'
It is easy to make a rattling sound when the parts come into contact with each other.

Moreover, it is time-consuming to install the diaphragm 19' in the small gap between the horn tweeter section B and the diaphragm 13.

Furthermore, in the case shown in FIG. 2, since a dustproof net 19'' is stretched over the opening of the horn 15, the sharpness and sharpness characteristic of the horn 15 may be lost, which may have a large negative impact on the design. Ta.

The present invention was made in view of the above points, and its purpose is to connect the horn of the horn tweeter section to the first horn structure on the driver unit side and the second horn structure on the grill side. By making it possible to assemble it by dividing it into two parts, a dustproof net can be easily installed between the first horn structure and the second horn structure, thereby minimizing the negative effects on frequency characteristics and sound quality. An object of the present invention is to provide a composite type speaker that can exhibit a dustproof effect.

An embodiment of the present invention will be described below with reference to FIG.

Reference numeral A denotes a woofer section formed by incorporating a horn/tweeter section B coaxially therein, and this woofer section A connects a voice coil 2 fixed to the lower surface of a cone-shaped diaphragm 1 to a magnetic gap 3a of a magnetic circuit 3. The diaphragm 1 presses and fixes the backing 6 via the edges 5 to the outer peripheral step 4a of the frame 4 fixed to the upper surface of the magnetic circuit 3, and the diaphragm 1 and the voice coil bobbin 2 It is formed by fixing the joint portion to the frame 4 using a damper material 7.

On the other hand, the horn tweeter section B has a magnetic circuit 9 fitted into a recess 8a of a mounting member 8 screwed onto the upper surface of the magnetic circuit 3 of the woofer section A, and has a dome-shaped diaphragm 1 on the upper surface. , and the voice coil bobbin 12 supported by the support member 11 by the damper 10 is inserted into the gap 9 of the magnetic circuit 9.
A horn 15 having an equalizer 14 placed above the diaphragm 13 is inserted into the support member 11 using several screws 16, and a grill 17 integrally formed with the horn 15 is fixed to the support member 11 using several screws 16. By being fixed to the upper surface of the backing 6, the grille 17 is formed to cover the upper surface of the woofer section B.

The horn 15 has a first horn structure 15 on the driver unit 18 side, with the upper surface of the gasket 6 that presses the diaphragm 1 of the woofer part B against the outer circumferential step 4a of the frame 4 as a reference plane X.
A, and a second horn structure 15B which can be freely assembled on the upper surface thereof and is integrally formed with the grille 17.

The outer edge 17a of the grille 17 is fixed to the flange 4b of the frame 4 of the woofer section A by means of adhesive or screws.

19 is the first horn structure 15A and the second horn structure 15
This dustproof net 19 is made of natural fibers or synthetic resin fibers, and the second horn structure 15B is attached to the first horn structure 15A using adhesive. When assembled by gluing, it can be attached by gluing the outer peripheral edge together.

One embodiment of the present invention has the above-described configuration, and the horn 1 of the horn tweeter section B is assembled by being divided into two parts, the first horn component 15A and the second horn component 15B.
5 first horn structure 15A and second horn structure 15B
The dust-proof net 19 was attached to the first horn structure 15A by gluing its outer peripheral edge, etc., and the second horn structure 15B was attached to the first horn structure 15A. It is not necessary to stretch the dustproof net 19 in the small gap between the diaphragm 13 and the equalizer 14 of the driver unit 1B as in the conventional composite speaker.

Therefore, the dustproof net 19 can be stretched over the horn 15 with easy handling, and there is little variation in frequency characteristics.
What's more, the sound quality remains unchanged, without becoming choppy, and without losing the sharpness and sharpness characteristic of horn speakers.

As mentioned above, in this invention, the horn of the horn tweeter section is divided into two parts, the first horn structure on the driver unit side and the second horn structure on the grill side, so that it can be assembled freely. The structure is divided into two parts, the structure and the second horn structure, which can be assembled freely, and a dustproof net is stretched between the first horn structure and the second horn structure for easy handling. In particular, compared to conventional products in which a dustproof net is stretched over a gap of less than one inch between the equalizer and the diaphragm, the dustproof effect can be exerted with minimal adverse effects on frequency characteristics and sound quality.

[Brief explanation of the drawing]

Figure 1 is a half-sectional view showing an example of a conventional composite speaker.
FIG. 2 is a half sectional view showing the other side of the same conventional composite speaker, and FIG. 3 is a half sectional view showing an embodiment of the composite speaker of the present invention. A... Woofer section, B@111161111 horn tweeter section, 15... Horn, 15A.
...1st horn configuration, 15B...2nd
Horn structure, 19...Dust-proof net.

Claims (1)

[Scope of utility model registration request] A composite speaker is formed by coaxially incorporating a horn/tweeter part into the woofer part and covering the top surface of the woofer part with a grill, and the horn of the horn/tweeter part is connected to the first horn structure on the driver unit side. A composite speaker characterized in that it can be freely assembled by being divided into two parts with a second horn structure on the grill side, and a dustproof net is stretched between the first horn structure and the second horn structure. .