JPH1042384A - Combined speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make high resistance to input, to thin a speaker and to reduce the number of parts about a combined speaker which is used for various acoustic devices. SOLUTION: An attaching vis which exists from the bottom of a tweeter that is another speaker 20 till over a dust cap 6 is removed by using a frame 21 which integrates a tweeter frame 21a and a bridge part 21b which are formed by resin injection molding in front of a diaphragm 5 of a main speaker A. Therefore, this speaker can be inputted with high resistance and is made to be thin. Also, the number of parts of the speaker can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite speaker used for various audio equipment.

[0002]

2. Description of the Related Art In recent years, with the spread of digital audio, higher performance of audio peripheral devices has become indispensable. In order to respond to such demands, a bass speaker as a main speaker and a tweeter as another speaker. A composite speaker having a configuration such as combining with a speaker or a squawker is used.

A conventional composite speaker of this type will be described with reference to FIG. FIG. 3 is a cross-sectional view showing the configuration of a conventional composite speaker. In FIG. 3, reference numeral 1 denotes a magnetic circuit, and the magnetic circuit 1 has a ring shape similar to a ring-shaped upper plate 1a. The magnetic gap 10 is formed in the gap between the inner peripheral portion of the upper plate 1a and the outer peripheral portion of the center pole portion of the lower plate 1c. Have been.

[0004] 2 is a frame coupled to the upper surface of the magnetic circuit 1, 3 is a voice coil fitted in the magnetic gap 10, 4 is a damper for supporting the voice coil 3, 5 is a voice coil 3 centered Combined diaphragm,
Reference numeral 6 denotes a dust cap coupled to the upper surface of the central portion of the diaphragm 5, and these constitute a main speaker A.

A tweeter 11 is another speaker disposed above the diaphragm 5. A bridge 12 connects the tweeter 11 and the frame 2. A mounting screw 13 is provided on the tweeter 11. A composite speaker was formed by coupling a screw provided at the bottom with a through hole at the bottom of the bridge 12 and coupling this with the outer edge of the frame 2.

[0006]

However, in the above-mentioned conventional configuration, the gap between the dust cap 6 and the mounting screw 13 is sufficiently provided in consideration of the input signal being applied and the vibration of the diaphragm 5 being considered. Since it is necessary to secure the input speaker, it has been difficult to increase the input resistance and to reduce the thickness of the composite speaker.

Further, since the tweeter 11 and the bridge 12 are connected by the mounting screw 13, the number of parts is large, and the production is difficult.

The present invention has been made to solve the above-mentioned conventional problems, and provides a composite speaker in which the thickness and the input resistance of the composite speaker are reduced, the number of parts is reduced, and the productivity is improved. It is the purpose.

[0009]

According to the present invention, there is provided a composite speaker according to the present invention, wherein a frame is coupled to an upper surface of a magnetic circuit having a magnetic gap, and a voice which fits into the magnetic gap at the periphery of the frame. A main speaker is formed by connecting outer edges of a diaphragm coupled with a coil as a center, and another frame in which a bridge portion is integrally provided on the frame is coupled to another speaker on the diaphragm. This eliminates the need for mounting screws for attaching the other speakers to the bridge portion, and eliminates the mounting screws to secure a space between the main speaker and the other speakers mounted on the main speaker, thereby increasing the height of the composite speaker. This contributes to cost reduction due to input resistance, thickness reduction, and reduction in the number of parts.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A composite speaker according to a first aspect of the present invention is characterized in that a frame is connected to an upper surface of a magnetic circuit having a magnetic gap, and a voice coil which fits into the magnetic gap around the periphery of the frame. A main speaker is configured by connecting the outer edges of the combined diaphragm, and another frame in which a bridge portion is provided integrally with the frame is connected to another speaker on the diaphragm. This eliminates the need for mounting screws for attaching other speakers to the bridge section, and by eliminating the mounting screws, secures the distance between the main speaker and other speakers mounted on the main speaker, and increases the high endurance of the composite speaker. This contributes to cost reduction accompanying inputting, thinning, and reducing the number of parts.

According to a second aspect of the present invention, there is provided a composite speaker according to the first aspect, wherein the frame of the other speaker is formed by resin molding, and the magnetic circuit is integrally formed with the frame by insert molding. It is intended to further reduce the number of parts and improve productivity.

An embodiment of the composite speaker according to the present invention will be described with reference to FIGS. The same parts as in the prior art are denoted by the same reference numerals, and description thereof will be omitted.

(Embodiment 1) FIG. 1 is a sectional view showing a configuration of a composite speaker according to Embodiment 1 of the present invention.
Explaining only the differences from the prior art, reference numeral 21 denotes a frame of another speaker 20 in which a tweeter frame 21a and a bridge portion 21b are integrally formed by resin injection molding, and is connected to the outer edge of the frame 2 at the bridge portion 21b. A tweeter as another speaker 20 is attached to the main speaker A. That is, the magnetic circuit 2 of the other speaker 20
0a, the diaphragm 20b, etc. are connected to the tweeter frame 21a in the same manner as the main speaker A, so that the bridge portion 21b integrated with the tweeter frame 21a is mounted on the frame 2 of the main speaker A, so that the other speakers 20
Can be mounted on the main speaker A very easily.

As described above, the composite speaker according to the present embodiment has a tweeter frame 2 formed by resin injection molding.
By integrating 1a and the bridge portion 21b, the mounting screw for connecting the bridge portion 21b and the other speaker 20 is abolished, the restriction on the amplitude due to the protrusion of the screw head is eased, and the input resistance and the miniaturization are reduced. Not only can this be achieved, but also the number of parts can be reduced, and the process can be simplified.

(Embodiment 2) Hereinafter, another embodiment of the present invention will be described with reference to the cross-sectional view of FIG. 2 only for differences from the embodiment 1 of FIG. 1. Reference numeral 31 denotes a tweeter frame by resin injection molding. A tweeter magnetic circuit 32 which integrates the speaker 31a and the bridge portion 31b and is another speaker 35.
This is another frame formed by insert-molding, the diaphragm 33 of another speaker 35 is connected to the periphery, and the frame 33 of the main speaker A is connected at the bridge portion 31b.

Reference numeral 34 denotes a voice coil fitted in the magnetic gap of the magnetic circuit 32 and connected to the diaphragm 33.

As described above, the composite speaker according to the second embodiment integrates the tweeter frame 31a and the bridge portion 31b formed by resin injection molding, and insert-molds the magnetic circuit 32 of another speaker 35. Thus, the number of parts can be further reduced as compared with the first embodiment, and the process can be further simplified.

[0018]

As described above, the composite speaker according to the present invention is mounted by integrating the tweeter frame and the bridge portion on the upper surface of the diaphragm of the woofer, which is the main speaker, into an integrated structure. It eliminates the need for screws, eliminates the restrictions on the size of the screw head and the upper end of the dust cap, and achieves a high input resistance, a thinner composite speaker, a reduced number of parts, and easier production. .

[Brief description of the drawings]

FIG. 1 is a sectional view showing the configuration of an embodiment of a composite speaker according to the present invention.

FIG. 2 is a sectional view showing a configuration of another embodiment.

FIG. 3 is a sectional view showing a configuration of a conventional composite speaker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic circuit 2 Frame 3 Voice coil 5 Diaphragm 6 Dust cap 10 Magnetic gap 20, 35 Other speakers 21, 31 Other frames 21a, 31a Tweeter frame 21b, 31b Bridge part

Claims (2)

[Claims] A main speaker is formed by connecting a frame to an upper surface of a magnetic circuit having a magnetic gap, and connecting an outer edge of a diaphragm centered on a voice coil that fits into the magnetic gap to a peripheral edge of the frame. A composite speaker in which another frame in which a bridge portion is provided integrally with the frame is connected to another frame on the diaphragm. 2. The composite speaker according to claim 1, wherein another frame is formed by resin molding, and a magnetic circuit of another speaker is insert-molded integrally with the other frame.