JPH0543698U - Electric / acoustic converter unit - Google Patents

Abstract

(57) [Summary] [Purpose] In an electro-acoustic transducer unit used for a microphone or headphones, a connecting portion of a lead wire from a voice coil to an external wire can be manufactured by an automatic machine. [Structure] In a structure electric-acoustic transducer unit in which an outer peripheral portion of a diaphragm 1 to which a voice coil 2 is attached is attached to a diaphragm ring 3, the diaphragm ring 3 is formed of an electrically insulating material and one of the diaphragm ring 3 is formed. Terminal pins 20, 21 or pattern for soldering on the part
23 and 24 are formed, and the lead wires 18 and 19 are connected thereto. Terminal pins 20, 21 or patterns 23, 24 for soldering
By providing, this part can be manufactured by an automatic machine.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electro-acoustic transducer unit used in a microphone or headphones.

[0002]

[Prior Art]

 In an electric / acoustic transducer such as a microphone or headphone, a voice coil is vibrated in a magnetic circuit formed by a magnet and a yoke. This voice coil is attached to a diaphragm (also called a diaphragm), and the outer circumference of the diaphragm is attached to a diaphragm ring. In the case of a microphone, the diaphragm vibrates due to sound waves, and the voice coil that vibrates with the sound wave is in the magnetic circuit, causing electromotive force in the voice coil. By adding, the voice coil vibrates the diaphragm by the vibration generated in the magnetic circuit.

As described above, the voice coil vibrates together with the diaphragm regardless of whether it is a microphone or a headphone. Therefore, great care must be taken when assembling the portion connecting the lead wire to the terminal. That is, the lead wire is extremely thin together with the voice coil, and it is difficult to connect to the terminal with some allowance in order to prevent the lead wire from being cut even if it vibrates. Not familiar with automation, skilled workers had to do it manually.

[0004]

[Problems to be solved by the device]

 If automation cannot be promoted, it will cause problems in mass production as well as cost problems. The present invention has been made in view of this point, and provides an electric-acoustic transducer unit that has a simple structure, requires no skill for assembly, and can be easily adapted to automation. Is what you are trying to do.

[0005]

[Means for Solving the Problems]

 As a means for solving the above problems, the present invention provides an electric-acoustic transducer unit having a structure in which an outer peripheral portion of a vibration plate having a voice coil attached thereto is attached to a diaphragm ring. And a terminal pin is erected on a part of the diaphragm ring, and a lead wire of a voice coil is connected to the terminal pin.

Further, in the electro-acoustic transducer unit having a structure in which the outer peripheral portion of the diaphragm to which the voice coil is attached is attached to the diaphragm ring, the diaphragm ring is formed of an electrically insulating material, and a part of the diaphragm ring is formed. A pattern for soldering is formed on and a lead wire of a voice coil is connected to the pattern.

[0007]

[Action]

 With such a configuration, the end of the lead wire may be connected to a terminal pin or a pattern provided near the outer periphery of the diaphragm, so that the work can be automated and the voice coil can be installed. Even when vibrating, the force applied to the lead wire can be made uniform and uniform, which improves product quality.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. 1 and FIG. 2 showing a main part of the present invention. Reference numeral 1 denotes a diaphragm, which has a circular planar shape and a mountain-shaped cross-section, and is a thin-film type also called a diaphragm. A voice coil 2 is attached to the lower surface of the center of the diaphragm 1 and is located in a magnetic circuit described later. The outer peripheral portion of the diaphragm 1 is attached to a diaphragm ring 3 made of an electrically insulating material such as synthetic resin. The diaphragm ring 3 is attached to the surface of the housing 4.

The outer periphery of the upper portion of the housing 4 is erected, the cap 5 is fitted to that portion, and ultrasonic welding is performed at the portion indicated by reference numeral 6. The cap 5 is provided with a hole 7 so that the passage of sound waves is not hindered.

The housing 4 has a tubular shape as a whole, and an upright portion 10 of a bottom plate 9 is fitted into a hole 8 provided at the center thereof with a slit 11 provided on the housing 4 side leaving a slight gap. is doing. A hole is provided in the bottom plate 9 in the gap by the slit 11 and a damper material is not attached to the hole in the related art.

A recess 12 is formed on the outside of the hole 8 in the housing 4, and a ring-shaped magnet 13 is formed in the recess 12, a center yoke 15 having an upright portion 14 on the inner circumference thereof, and a flat ring yoke 16 are provided. However, they are fitted in the positional relationship shown in the figure. A magnetic circuit is formed here by the structure in which the magnet 13 is sandwiched between the center yoke 15 and the ring yoke 16. An air gap 17 is formed between the rising portion 14 of the center yoke 15 and the ring yoke 16, and the voice coil 2 described above is prevented from coming into contact with the rising portion 14 and the ring yoke 16 in this space 17. Are installed.

Two lead wires 18 and 19 are drawn out from the voice coil 2 (see FIG. 2). As shown in FIG. 1, terminal pins 20 and 21 are erected on a part of the diaphragm ring 3, and the ends of the lead wires 18 and 19 of the voice coil 2 are connected to the terminal pins 20 and 21. .. The structure of the connecting portion is such that the lead wires 18 and 19 are passed between the diaphragm ring 3 and the housing 4 and the lead wires 18 and 19 are wound around the terminal pins 20 and 21 (see FIG. 1). The terminal pins 20 and 21 project from the lower part of the housing 4 through holes 22 formed in the housing 4 so that they can be connected to external wiring.

The operation is as follows. When this electro-acoustic transducer unit is a microphone, when a sound wave from the outside enters through the hole 7 of the cap 5 and vibrates the diaphragm 1, the voice coil 2 together with the diaphragm 1 vibrates in the magnetic circuit. A voice signal is generated in this voice coil 2. Therefore, this audio current is taken out from the terminal pins 20 and 21 and amplified by the amplifier to drive the speaker or the like.

When the electro-acoustic transducer unit is headphones, the voice coil 2 is vibrated together with the voice coil 2 by supplying a voice current to the voice coil 2 in the magnetic circuit. The diaphragm 1 generates a sound by vibrating.

The winding and connection of the lead wires 18 and 19 drawn out from the voice coil 2 to the terminal pins 20 and 21 can be automatically performed by an automatic machine. This is the reason why the upper portion of the hole 22 of the housing 4 is widened as shown in FIG.

Another embodiment of the present invention will be described with reference to FIG. 3 and FIG. 4 showing the main part thereof. In this embodiment, a terminal pin is not used, but a part of the diaphragm ring 3 made of an electrically insulating material is made to project laterally from the housing 4 and soldered to the rear surface of this part of the diaphragm ring 3. The patterns 23 and 24 are formed, and the ends of the lead wires 18 and 19 are connected to the patterns 23 and 24 by soldering.

In this case, the soldering work of the ends of the lead wires 18, 19 to the soldering patterns 23, 24 can be performed by an automatic machine as in the above-described embodiment. Regarding the action, there is no difference from the above-mentioned embodiment.

[0018]

[Effect of the device]

 Since the present invention is the electro-acoustic transducer unit configured as described above, in any of the embodiments, the automatic work can be easily performed by the automatic machine, so that the manufacturability is significantly improved. improves. Terminal pins or patterns also make it easier to position lead wires and connect to external wiring.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a plan view showing a main part of FIG.

FIG. 3 is a vertical sectional view of another embodiment of the present invention.

FIG. 4 is a plan view showing a main part of FIG.

[Explanation of symbols]

 1 diaphragm 2 voice coil 3 diaphragm ring 4 housing 13 magnet 15 center yoke 16 ring yoke 18 lead wire 19 lead wire 20 terminal pin 21 terminal pin 23 pattern 24 pattern

Claims (2)

[Scope of utility model registration request] 1. An electric-acoustic transducer unit having a structure in which a diaphragm having a voice coil attached to an outer peripheral portion thereof is attached to a diaphragm ring, wherein the diaphragm ring is formed of an electrically insulating material, and a part of the diaphragm ring is formed. An electric / acoustic transducer unit, wherein terminal pins are planted in the terminal and voice coil lead wires are connected to the terminal pins. 2. An electric-acoustic transducer unit having a structure in which a diaphragm having a voice coil is attached to an outer peripheral portion of the diaphragm, wherein the diaphragm ring is made of an electrically insulating material, and a part of the diaphragm ring is formed. An electro-acoustic transducer unit, characterized in that a soldering pattern is formed on the substrate and a lead wire of a voice coil is connected to the pattern.