ELECTRODYNAMIC SPEAKER AND METHOD FOR MANUFACTURING THE SAME

• US 20130182885A1
• Filed: 11/14/2012
• Published: 07/18/2013
• Est. Priority Date: 01/16/2012
• Status: Active Grant

• Current Assignee: ONKYO Corporation (Onkyo Home Entertainment Corp.)
• Original Assignee: ONKYO Corporation (Onkyo Home Entertainment Corp.)
• Inventors: FUJITANI, Takeshi
• Granted Patent: US 8,811,652 B2
• Time in Patent Office: Days
• US Class Current: 381/412
• CPC Class Codes: H04R 1/06 Arranging circuit leads; Relieving strain on circuit leads
• CPC Class Codes: H04R 1/1008 Earpieces of the supra-aural or circum-aural type
• CPC Class Codes: H04R 2499/15 Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
• CPC Class Codes: H04R 3/00 Circuits for transducers , loudspeakers or microphones
• CPC Class Codes: H04R 31/00 Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor manufacture of microstructural arrangements of deformable or non-deformable structures in general B81C1/00182
• CPC Class Codes: Y10T 29/49005 Acoustic transducer

Abstract

An electrodynamic speaker in which the number of steps of forming a tinsel wire to be connected to a voice coil and connecting the tinsel wire to a terminal can be reduced is provided.

A frame of the electrodynamic speaker includes an edge mounting section, a magnetic circuit mounting section, a coupling section for coupling the edge mounting section and the magnetic circuit mounting section so as to define a plurality of window sections, a terminal fixing section for fixing a terminal, and at least one void for dividing the edge mounting section having an approximately annular shape, the void being communicatively connected to the window sections of the coupling section. A middle portion of the tinsel wire passes through the void or the window sections communicatively connected to the void, and the other end of the tinsel wire is connected and fixed to the terminal.

Claims

1. An electrodynamic speaker, comprising:

a frame having an approximately basket-shaped substrate;

a diaphragm to be held in the frame;

an edge to be coupled to an outer peripheral end of the diaphragm;

a voice coil to be connected to the diaphragm;

a magnetic circuit having a magnetic void into which the voice coil is inserted;

a tinsel wire whose one end is connected and fixed to the voice coil; and

a terminal to be coupled to the frame, wherein

the frame includes

an edge mounting section for mounting the edge formed on one side of the substrate,

a magnetic circuit mounting section for mounting the magnetic circuit formed on the other side of the substrate,

a coupling section for coupling the edge mounting section and the magnetic circuit mounting section so as to define a plurality of window sections,

a terminal fixing section for fixing the terminal, and

at least one void for dividing the edge mounting section having an approximately annular shape, the void being communicatively connected to the window sections of the coupling section,

a middle portion of the tinsel wire passes through the void or the window sections communicatively connected to the void, and the other end of the tinsel wire is connected and fixed to the terminal.

2. The electrodynamic speaker according to claim 1, wherein

the edge includes

an inner periphery fixing section to be coupled to the outer peripheral end of the diaphragm,

an outer periphery fixing section to be fixed to the edge mounting section of the frame, and

a support movable section for coupling the inner periphery fixing section and the outer periphery fixing section in a vibration-enabled manner,

the outer periphery fixing section includes a tinsel wire fixing section that has a protrusion on a position corresponding to the void of the edge mounting section and fixes the middle portion of the tinsel wire using the protrusion that is entirely or partially held in the void.

3. The electrodynamic speaker according to claim 2, wherein the diaphragm and the edge are formed integrally with each other, and at least the diaphragm and the support movable section of the edge are made of different materials.

4. The electrodynamic speaker according to claim 3, wherein the diaphragm and the outer periphery fixing section of the edge are made of the same material.

5. A method for manufacturing an electrodynamic speaker, the electrodynamic speaker including a frame having an approximately basket-shaped substrate, a diaphragm to be held in the frame, an edge to be coupled to an outer peripheral end of the diaphragm, a voice coil to be coupled to the diaphragm, a magnetic circuit having a magnetic void into which the voice coil is inserted, a tinsel wire whose one end is connected and fixed to the voice coil, and a terminal to be coupled to the frame, the method comprising the steps of:

forming the frame including an edge mounting section for mounting the edge formed on one side of the substrate, a magnetic circuit mounting section for mounting the magnetic circuit formed on the other side of the substrate, a coupling section for coupling the edge mounting section and the magnetic circuit mounting section so as to define a plurality of window sections, a terminal fixing section for fixing the terminal, and at least one void for dividing the edge mounting section having an approximately annular shape, the void being communicatively connected to the window sections of the connecting section;

coupling the terminal to the terminal fixing section of the frame;

coupling the diaphragm, the edge, the voice coil and the tinsel wire so as to constitute a vibration system;

when the vibration system is moved from one side to the other side of the substrate of the frame, allowing a middle portion of the tinsel wire to pass through the void of the frame or the window sections communicatively connected to the void and placing and fixing the edge to the edge mounting section of the frame;

connecting and fixing the other end of the tinsel wire to the terminal; and

mounting the magnetic circuit to the magnetic circuit mounting section of the frame so as to arrange the voice coil on the magnetic void of the magnetic circuit.

6. The method for manufacturing the electrodynamic speaker according to claim 5, further comprising the steps of:

forming the edge so that the edge includes an inner periphery fixing section to be coupled to the outer peripheral end of the diaphragm, an outer periphery fixing section to be fixed to the edge mounting section of the frame, and a support movable section for coupling the inner periphery fixing section and the outer periphery fixing section in a vibration-enabled manner, and the outer periphery fixing section includes a tinsel wire fixing section for fixing the middle portion of the tinsel wire to a protrusion on a position corresponding to the void of the edge mounting section;

placing and fixing the edge on the edge mounting section of the frame so that the protrusion including the tinsel wire fixing section is entirely or partially held in the void; and

fixing the middle portion of the tinsel wire using the tinsel wire fixing section.

7. The method for manufacturing the electrodynamic speaker according to claim 6, further comprising a step of forming the diaphragm and the edge integrally so that at least the diaphragm and the support movable section of the edge are made of different materials.

8. The method for manufacturing the electrodynamic speaker according to claim 7, further comprising a step of forming the diaphragm and the outer periphery fixing section of the edge using the same material.