JPS5819903Y2 - Composite speaker system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the formation of a back cavity of a mid-high frequency speaker in a composite speaker system.

A squawker or tweeter is a speaker for medium and high frequencies.
The sealed frame itself is used as a back chamber, thereby forming a back cavity.
In this configuration, drawing out the lead wire from the voice coil is complicated, and the cavity volume is limited depending on the size of the speaker, which adversely affects the low frequency characteristics of the speaker.

In particular, in a composite speaker stem as shown in Fig. 1, it is necessary to increase the space in front of the diaphragm 1 of the bass speaker A, and to increase the overall height (axial height) of the speaker system.
Due to the need to keep the frequency within a predetermined range, it is necessary to make the middle and high-frequency sound speaker B thinner, which requires a large sacrifice in the back cavity.

C is a spacer for attaching mid-high sound speaker B to bass speaker AK7tL at a predetermined distance, and is integrated with bolt 2.

The present invention was developed in view of this point, and a spacer for attaching a mid-high sound speaker to a low sound speaker is simultaneously used as a back chamber for the mid-high sound speaker to form a back cavity, and as described above. The aim is to provide a composite speaker that solves these problems.

Hereinafter, one embodiment of the present invention will be described with reference to FIG.

Although this figure only shows the main parts, the bass speaker A is designed to transmit magnetic flux from a ring-shaped magnet 5 held between a yoke 3 and a plate 4 to a gap 7 between a center pole 6 and a plate 4. The voice coil 8 is positioned there, and the piston movement of the voice coil 8 drives the diaphragm 1 via the bobbin 9.

Reference numeral 10 denotes a damper for accurately regulating the piston movement of the bobbin 9 and for preventing dust in the gap 7.

The outer periphery of this damper 10 is fixed to a frame 11, and the outer periphery of the diaphragm 1 is attached to the outer periphery of the frame 11 via an edge (not shown).

The mid-high frequency speaker B also directs the magnetic flux from the ring-shaped magnet 14 held between the yoke 12 and the plate 13 to the gap 16 between the center pole 15 and the plate 13.
By positioning the voice coil 17 there, the piston movement of the voice coil 17 causes the bobbin 1 to flow.
The diaphragm 19 is configured to be driven via the diaphragm 8 .

The piston motion force of the bobbin 18 is regulated by the damper 20, and a dustproof cap 21 is attached.
2a is formed.

Step 4: The mid-high frequency speaker B is placed above the center pole 6 of the bass speaker A through the spacer C, and in this state, the bolt 2 is connected to the bass speaker A.
By passing through the spacer C from IIIJ and screwing into the center pole 15 of the mid-high sound speaker B, the mid-high sound speaker B is fixed.

This spacer C has a peripheral wall 23 formed on the side of the mid-high sound speaker B, which has a shape that wraps around the back of the mid-high sound speaker B, and the space surrounded by this peripheral wall 23 is outside the frame 22. It is sealed by the peripheral back and the back of the yoke 12.

That is, the back of the diaphragm 19 is not the frame 22,
It has a structure that is sealed by a peripheral wall 23.

Note that a terminal 24 penetrates the peripheral wall 23 via a bush 25 and is connected to a tinsel wire 26.

In addition, 27 is the diaphragm 1 and spacer C of the bass speaker A.
This is a dustproof damper that is installed in a sealed manner between the

From the above, a back cavity is formed by the surrounding wall 23 at the back of the diaphragm 19 of the mid-high sound speaker H, and the volume of the cavity can be increased to some extent by selecting the size of the surrounding wall 23, and bass reproduction is achieved. will be less of a hindrance.

Incidentally, the peripheral wall 23 may be configured as a separate body from the spacer C, and the spacer C may be attached to the peripheral wall 23 after the mid-high sound speaker B is incorporated into the peripheral wall 23.

That is, according to the present invention, a mid-high frequency speaker with a through hole formed in the frame is mounted via a spacer so as to be positioned above the center pole of a bass speaker, and in this state, the bolt is inserted into the bass speaker. In a composite speaker system in which a mid-high sound speaker is fixed by screwing through the spacer from the side to a center pole of a mid-high sound speaker, the spacer includes a mid-high sound speaker on the side of the mid-high sound speaker. A peripheral wall having a shape that wraps around the back of the speaker is formed, and by fixing the mid-high sound speaker with the bolt, the upper end circumferential surface of the peripheral wall is brought into close contact with the outer periphery back of the frame of the mid-high sound speaker. Since the back of the high-frequency speaker is enclosed and sealed, the overall height of the squawker and tweeter can be increased while maintaining the low-frequency characteristics by simply installing the mid-high frequency speaker to the low-frequency speaker in the same way as conventional speakers. It can now be made lower (thinner), and the squawker and tweeter frames can be made with regular window holes, making it easier to pull out the lead wire from the voice coil. , workability is good, and it is possible to achieve a low defect rate.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a part of a conventional composite speaker system, and FIG. 2 is a sectional view of a main part of a composite speaker system according to an embodiment of the present invention. A...Speaker for bass, B...Speaker for medium and high frequencies, C...Spacer, 19...
・Diaphragm, 22... Frame, 23...
・Peripheral wall.

Claims (1)

[Scope of utility model registration request] A mid-high frequency speaker with a through hole formed in the frame.
Place the bass speaker through a spacer so that it is located above the center pole of the bass speaker, and in this state, screw the bolt from the bass speaker side through the spacer and into the center pole of the mid-high speaker. In a case-type speaker system in which a speaker is fixed, a peripheral wall having a shape that wraps around the back of the mid-to-high sound speaker is formed on the spacer on the side of the mid-to-high sound speaker; A composite speaker characterized in that, by fixing the speaker, the lower end surface of the peripheral wall is brought into close contact with the back of the outer peripheral edge of the frame of the mid-to-high sound speaker, thereby enclosing and sealing the dorsiflexion of the mid-to-high sound speaker. system.