JPS5850720Y2 - flat speaker - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a conductor lead-out structure for a flat speaker.

Conventionally, in speakers with a flat diaphragm that has a conductive foil printed in a spiral shape, the leader wire that connects the inner peripheral end of the voice coil that forms the conductive foil to the external terminal board is either printed on the back of the diaphragm or drawn out on the back. I was trying to add lines.

The structure in which the diaphragm is printed on the back side requires a lot of time to manufacture, and the structure in which conductors are attached to the back side requires time and effort to assemble.

The present invention was devised to eliminate the above-mentioned drawbacks, and to explain the embodiment shown in the drawings, as shown in Figs. A magnetic gap is formed between a center pole 11 and a plate 12, and a voice coil 2 formed with a spiral conductive foil located at the magnetic gap is provided on the upper surface of a diaphragm 1. The upper and lower central portions 3 of the diaphragm 1 are clamped by clampers 14. The clamper 14 is sandwiched between the center pole 4 having a depression in the center and the cylindrical part 5 having a protrusion 4 in the center, and the diaphragm 1
Clamp the top and bottom of the outer periphery 6 with clampers 15,
5 between the plate 5 and the annular part 7, and the cylinder part 5 and the annular part 7.
A groove 10 for storing a lead wire 9 between the inner circumferential end of the voice coil 2 and the external terminal plate is connected to the outer surface of the annular portion 7 and the lower surface of the bridge portion 8 by a plurality of bridge portions 8. At the same time, a groove 10 in which the lead wire 9 between the outer peripheral end of the voice coil 2 and the external terminal board is to be accommodated is carved from the outside through the annular portion 7 and the bridge portion 8 to reach the columnar portion 5. It is engraved all the way to the inside of the annular part 7,
This is a flat speaker in which the outer peripheral end of the voice coil 2 and the tip of the lead wire 9 are electrically connected by pressure contact.

Since the present invention has the above structure, the inner and outer peripheral ends of the voice coil 2 are on the top surface of the diaphragm 1, and the cylindrical part 5,
Connection to the external terminal board can be made by simply crimping the diaphragm 1 when installing the annular portion 7, and the structure for drawing out the leader wire 9 is simple.
Stable quality and good productivity.

Since the lead wire 9 is located on the lower surface of the column part 5, the bridge part 8, and the annular part 7, the conductor wire is not visible from the outside, so the flat speaker has an excellent design.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the flat-plate speaker of the present invention, and FIG. 2 is a cross-sectional view of the flat-plate speaker of the present invention taken along line A-A' in FIG. 1 is a diaphragm, 2 is a voice coil, 3 is a central portion, 4 is a protruding portion, 5 is a cylindrical portion, 6 is an outer periphery, 1 is an annular portion, 8 is a bridge portion,
9 is a leader line, 10 is a groove, 11 is a center pole, 12 is a plate, 13 is a magnet, and 14 and 15 are clampers.

Claims (1)

[Scope of utility model registration request] Between a cylindrical part 5 having a protruding part 4 that presses a central part 3 of a diaphragm 1 to which a voice coil 2 having a spiral conductive foil is attached on its upper surface, and an annular part 7 that presses an outer peripheral part 6. , a flat speaker in which a plurality of bridge portions 8 are provided for communication, and a groove 10 in which an output line 9 of a voice coil 2 is to be housed is carved on the lower surface of the annular portion 7 and the bridge portion 8.