JPH0129899Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a composite speaker, particularly a composite speaker that can be made into a mechanical 3-way type composite speaker without changing the size of the speaker frame.

[Conventional technology]

Generally, as shown in FIG. 2, a composite speaker is constructed by attaching a high-frequency speaker (tweeter) 2, which is a secondary speaker, to the center of a low-frequency speaker (woofer) 1, which is a main speaker.

However, in most of this type of composite frame, the outer peripheral edge 1a of the diaphragm of the bass speaker 1 is attached to the opening of the frame 4 via the edge 3 having a semicircular arc shape in cross section, so the vibration area of the diaphragm is will inevitably decrease by the amount of edge. Therefore, the only way to increase the vibration area of the diaphragm is to change the dimensions of the frame, and to change a 2-way speaker to a mechanical 3-way composite speaker, the size of the frame must be changed. In addition to being subject to severe restrictions on speaker design, this also has the disadvantage of increasing costs when manufacturing the speaker.

[Problem that the invention attempts to solve]

In view of the current situation, this idea was developed to create a mechanical three-dimensional structure without changing the size of the speaker frame at all.
The purpose of this invention is to provide a composite speaker that can be used as a way type speaker.

[Means to solve the problem]

Therefore, this idea involves bending the outer peripheral edge of the cone-shaped diaphragm of the main speaker attached to the frame vertically downward and bending its tip parallel to the bottom of the frame to form a flat part. The tip of the supporting portion is fixed to the inner peripheral edge below the opening of the frame via the edge with a corrugated cross section, and a planar diaphragm having a ring shape is fixed to the flat supporting portion so as to cover the edge. It is characterized in that it can be used as a slave speaker, and it can also be used to form a composite speaker. If necessary, another vertical speaker that shares a common magnetic circuit can be installed at the neck of the main speaker to create a mechanical 3-way composite speaker. It is configured so that it can also be done.

[Effect]

In the composite speaker of this invention, the outer peripheral edge of the diaphragm of the main speaker is folded back, a flat part is provided on the outside of the main speaker, and a ring-shaped flat diaphragm is fixed to this flat part to form a sub speaker. Therefore, when the main speaker vibrates, the sub-speaker's diaphragm also vibrates and produces sound, so if the main speaker is used as a mid-range speaker and the sub-speaker is used as a bass speaker, it becomes a mechanical two-way composite speaker. If a high-pitched tweeter is provided with a common magnetic circuit in the neck of the diaphragm of the main speaker, a mechanical three-way type composite speaker can be easily obtained.

〔Example〕

Hereinafter, embodiments of this invention will be described in detail based on the accompanying drawings.

In the figure, 5 is a yoke with a center pole 6, 7 is a ring-shaped magnet, 8 is a top plate, 9 is a bobbin around which a voice coil is wound, 1
0 is a damper, 11 is a frame, and 12 is a plastic cone-shaped diaphragm. The bobbin 9 is fixed to the neck portion of the cone-shaped diaphragm, and constitutes a midrange speaker (squawker) as a main speaker.

As shown in FIG. 3, this cone-shaped diaphragm 12 has its outer circumferential edge folded vertically outward and downward, and its tip bent parallel to the bottom surface of the frame 11 toward the inner circumferential edge of the frame 11. A flat portion 13 is formed. Furthermore, this flat part 1
The tip end portion of 3 extends downward and is bent to form an edge attachment portion 14. 15 indicates an edge;
One end thereof is fixed to the mounting portion 14, and
The other end is fixed to the inner peripheral surface of the frame 11. Reference numeral 16 indicates a planar diaphragm having a honeycomb structure, which is ring-shaped and has a width slightly narrower than the width between the vertical part of the outer periphery of the main diaphragm 12 and the inner periphery of the frame 11. The flat portion 13 of the main diaphragm 12 has an inner peripheral edge of the lower surface so as to cover the edge 15 that supports the main diaphragm 12 on the frame 11.
The main diaphragm 12 is fixed to the main diaphragm 12 with an adhesive to form a bass speaker as a sub-diaphragm.

Reference numeral 17 denotes another sub-diaphragm which is attached to the center of the neck portion of the main diaphragm 12 so as to share its magnetic circuit, and constitutes a high-frequency speaker (tweeter).

[Effect of idea]

As mentioned above, the composite speaker of this invention is
A folded part having a flat part parallel to the bottom surface of the frame is formed on the outer peripheral edge of the diaphragm of the main speaker, and the tip of the folded part is fixed to the inner circumferential surface below the opening of the frame via an edge, In addition, since the composite speaker is constructed by covering this edge and fixing a ring-shaped flat diaphragm to the flat part, the area of the diaphragm of the main speaker can be significantly increased without changing the size of the frame. Since the diaphragm of the sub-speaker is attached to cover the edge that fixes the outer peripheral edge of the diaphragm of the main speaker to the frame, it is possible to obtain a speaker with an excellent design.

Furthermore, by attaching another sub-speaker to the neck portion of the diaphragm constituting the main speaker, a mechanical three-way composite speaker can be easily obtained without changing the size of the speaker frame.

Furthermore, since the diaphragm constituting the sub-speaker only needs to be fixed to a flat part that is connected to the diaphragm of the main speaker, the structure is extremely simple and easy to manufacture, which has great practical effects. It is something that you have.

[Brief explanation of the drawing]

Figure 1 is a half-sectional view of the composite speaker of this invention.
Figure 2 is a half-sectional view of a conventional mechanical two-way composite speaker, Figure 3 is a partially cutaway front view of the diaphragm of the main speaker constituting the composite speaker of this invention, and Figure 4 is a front view of this invention. FIG. 2 is a partially cutaway plan view of a flat diaphragm used in the composite speaker of FIG. 11...Frame, 12...Main speaker, 13
... Flat part, 15 ... Edge, 16 ... Plane diaphragm.

Claims (1)

[Claims for Utility Model Registration] (1) The outer periphery of the cone-shaped diaphragm of the main speaker attached to the frame is folded vertically downward outward, and its tip is bent parallel to the bottom of the frame to form a flat part. The tip of the flat part is fixed to the inner peripheral edge below the opening of the frame via the edge, and a ring-shaped flat diaphragm is fixed to the flat part so as to cover the edge. A composite speaker characterized in that a sub-speaker also includes a sub-speaker. (2) The composite speaker according to claim 1, wherein the planar diaphragm has a honeycomb structure. (3) The composite speaker according to claim 1, wherein the main speaker is a squawker and the sub-speaker is a woofer.