JPH0227677Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a speaker assembly device that can set a speaker assembly in a predetermined position when attaching a voice coil to the speaker assembly.

Generally, during speaker assembly work, the voice is inserted into the magnetic gear of the speaker assembly (a speaker frame with terminal plates that receive input signals, magnets that make up the magnetic circuit, pole pieces, top plate, bottom plate, etc.). When installing the coil, it is necessary to position the voice coil lead wire and the terminal plate so as to face each other in order to shorten the length of the voice coil lead wire. This work usually involves placing the speaker assembly on the turntable of the speaker assembly machine, manually rotating the turntable to set the speaker assembly at a predetermined angle, and then moving the speaker assembly to the predetermined angle. The voice coil is inserted into a three-dimensional magnetic gap.

By the way, in the above-mentioned speaker assembly work, the position of the speaker assembly is determined by rotating the turntable while visually checking the position of the speaker assembly, which makes it difficult to always set the speaker assembly in a fixed position. There was a problem that the work was extremely troublesome.

This invention was made in view of the above circumstances, and the purpose is to provide a speaker assembly device that allows the speaker assembly to be easily set in a predetermined position when attaching a voice coil, etc. be.

In order to achieve this purpose, the speaker assembly device of this invention places and fixes the speaker assembly on a turntable that is rotatably supported relative to the main body so that its center axis coincides with the turntable rotation axis. and an assembly mounting means configured to assemble the speaker on the turntable, and an imaginary circle centered on the central axis of the speaker assembly at the peripheral edge of the frame of the speaker assembly, and this imaginary circle. Above or on concentric circles of this imaginary circle, in a specific direction with respect to each component of the speaker assembly, and so that there is no other pair having a congruent positional relationship on any arc portion on these circles,
In order to detect the first hole and the second hole formed in advance, respectively, a positional relationship that is congruent with the position of the first hole and the second hole with respect to the frame center axis with respect to the rotation axis of the turntable is established. and a first detection section and a second detection section that are respectively supported from the main body and arranged to face the turntable so as to be oriented in a specific direction with respect to each component of the main body. When the detection means consisting of a detection means and a speaker assembly are mounted and fixed on a turntable and the turntable is rotated, and the detection outputs of the first detection section and the second detection section are obtained simultaneously, the turntable The present invention is characterized by comprising a control means for controlling the rotation of the turntable to be stopped and for controlling the speaker assembly on the turntable to be positioned and arranged in a predetermined direction with respect to the main body.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

First, a speaker assembly to be processed by a speaker assembly apparatus to which this invention is applied will be described. 1 and 2 are diagrams showing the structure of a speaker assembly A to be processed, and in these figures, reference numeral 1 indicates a frame, 2 indicates a terminal plate attached to the main wall portion 1a of the frame 1, Reference numeral 3 denotes a magnetic circuit component attached to the rear end portion 1b of the frame 1.
The magnetic circuit component 3 consists of a magnet 4, a pole piece 5, a top plate 6, and a bottom plate 7, and a voice coil (Fig. (not shown) is now inserted. This speaker assembly A has speaker mounting holes 10a to 10d formed in the peripheral edge 1c of the frame 1, like a normal speaker assembly. In this case, the speaker mounting holes 10a to 10d are
They are arranged at equal intervals on an imaginary circle Y centered on the center point P of the speaker assembly A (its central axis, that is, a point on the axis of the pole piece 5), and each hole is attached to the frame 1. It has a fixed positional relationship with respect to a specific member such as the terminal plate 2, for example. This speaker assembly A differs from a normal speaker assembly in that there is a positioning hole in the peripheral edge 1c of the frame 1 at a position on the virtual circle Y and close to the speaker mounting hole 10a. 1
1 is formed. That is, this hole 11 is
It is formed either on the virtual circle Y or on a concentric circle of this virtual circle Y.

Next, a speaker assembly device according to this invention will be explained. FIG. 3 is a view showing the speaker assembly A set in the speaker assembly apparatus of this invention. In FIG. 3, reference numeral 21 denotes a turntable (mounting means for assembly), which is rotated by a shaft body 22 being rotated by a motor to be described later. This turntable 21
A speaker assembly A is placed on top, facing upward.
It is designed to be fixed by appropriate means.
In this case, the speaker assembly A is placed on the turntable 21 so that its central axis coincides with the axis (rotation axis) of the shaft body 22. Further, above the turntable 21, as shown in FIGS. 3 and 4, the speaker assembly A is mounted so as to be close to the peripheral edge 1c of the speaker assembly A mounted on the turntable. Holes 10a-10
A detection element (detection means) for detecting the hole 11 and the hole 11 is provided. That is, the turntable 21
With speaker assembly A placed on top,
Above the peripheral edge 1c of the speaker assembly A are two
Light emitting diodes 23a and 23b are arranged, and phototransistors 24a and 24b are arranged below the peripheral edge 1c so as to be located directly below the light emitting diodes 23a and 23b, respectively. These light emitting diodes 23a, 23b and phototransistors 24a, 24b are arranged along the virtual circle Y, and the speaker assembly A
When rotated appropriately, the light emitting diode 23a
The light from the light emitting diode 23b passes through any one of the holes 10a to 10d and 11 and irradiates the phototransistor 24a.
The phototransistor 24b is irradiated with the phototransistor 24b through either d or 11. In this case, the light emitting diode 23a (phototransistor 24
a) and the light emitting diode 23b (phototransistor 24b) are arranged along the virtual circle Y at a distance equal to the distance between the speaker mounting hole 10a and the hole 11. In addition, in this configuration, the light emitting diodes 23a, 23b and the phototransistors 24a, 24b are such that the light emitting diode 23a illuminates the phototransistor 24a through the speaker mounting hole 10a, and at the same time, the light emitting diode 23b illuminates the phototransistor 24a through the hole 11.
The speaker assembly A is positioned so that it is convenient for attaching the voice coil when the speaker assembly 4b is irradiated.

Further, FIG. 5 is a block diagram showing the configuration of a position setting device which is a main part of the speaker assembly device of this invention. As shown in this figure, the light emitting diodes 23a and 23b are supplied with power from the power supply terminal 25 and are turned on. Further, the phototransistors 24a and 24b each receive power from the power supply terminal 25, and turn on and off.
The off state is detected by detection circuits 26a and 26b. In this configuration, a light emitting diode 23a, a phototransistor 24a,
The detection circuit 26a constitutes a first detection section 27a that detects any of the holes 10a to 10d, 11, and the light emitting diode 23b, phototransistor 24b, and detection circuit 26b constitute a second detection section 27b. The detection circuits 27a and 27b normally output low level signals (hereinafter referred to as "L" signals),
When the phototransistors 24a and 24b are turned on, they output high-level signals (hereinafter referred to as "H" signals), and these outputs are supplied to the NAND gate 28. The output of the NAND gate 28 is the motor drive circuit (control means) 2
9. The motor drive circuit 29 turns on the motor 30 that drives the turntable 21 when receiving an "H" signal from the NAND gate 28, and turns off the motor 30 when receiving the same "L" signal.

Next, the operation of the apparatus configured as described above will be explained. First, the speaker assembly A is fixed on the turntable 21, and the power switch (not shown) of the position setting device is turned on. Here, if the position of the speaker assembly A in the rotational direction is not the normal position, that is, a convenient position for inserting the voice coil, the speaker mounting hole 10a
Since the holes 11 and 11 are not located corresponding to the light emitting diodes 23a, 23b (phototransistors 24a, 24b), the phototransistors 24a,
24b are both off, or one of them is on (speaker mounting holes 10a to 10 are located above either of the phototransistors 24a, 24b).
d, when either hole 11 is located).
Therefore, at this time, the outputs of the detection circuits 26a and 26b are both "L" signals, or one of them is "H".
The "H" signal is supplied to the motor drive circuit 29, and the motor drive circuit 29 rotates the motor 30. When the turntable 21 rotates with the rotation of the motor 30, the speaker mounting hole 10a
~10d, holes 11 are sequentially connected to phototransistors 24
a, 24b and rotates upward. Here, the phototransistors 24a and 24b may detect any of the speaker mounting holes 10a to 10d and the hole 11 and turn on.
The motor 30 continues to rotate unless both a and 24b are turned on. Now, the speaker mounting hole 10a is located above the phototransistor 24a,
At the same time, a hole 11 is formed above the phototransistor 24b.
are located, these phototransistors 24
a, 24b are both turned on, and the detection circuits 26a, 26
b both output "H" signals. Due to this
The output of the NAND gate 28 becomes an "L" signal,
The motor drive circuit 29 stops the rotation of the motor 30, and thus the rotation of the turntable 21 is stopped. However, the position of the speaker assembly A in the rotational direction at this time is the light emitting diode 23a,
24b, the phototransistor 24a, 24b and the speaker assembly A are in a fixed position where the voice coil can be inserted into the speaker assembly A due to their positional relationship. In this manner, the above-described device allows easy setting of the position for mounting the voice coil of the speaker assembly.

In addition, in this embodiment, the detection unit 27a,
27b to detect the speaker mounting hole 10a and the hole 11a to set the position of the speaker assembly A. However, two holes dedicated to setting the position in addition to the speaker mounting hole are provided on the periphery of the frame of the speaker assembly. The position of the speaker assembly may be set by detecting this dedicated hole.

As is clear from the above description, according to the speaker assembly device of this invention, a turntable for assembly on which a speaker assembly is placed, in which two detection holes are pre-formed at specific positions on the frame, can be assembled. Since the speaker assembly can be rotated to a predetermined directional position and then automatically stopped, the speaker assembly can be easily set at a predetermined position during voice coil installation work and the like.

[Brief explanation of the drawing]

Fig. 1 is a rear view of a speaker assembly A to be processed by the speaker assembly device of this invention, Fig. 2 is a cross-sectional view taken from the line shown in Fig. 1, and Fig. 3 is a speaker assembly assembled into the speaker assembly device of this invention. FIG. 4 is an enlarged perspective view of the portion seen along the line in FIG. 3, and FIG. 5 is a block diagram showing the configuration of the position setting device, which is the main part of the speaker assembly device of this invention. It is. A... Speaker assembly, 1... Frame, 1c... Periphery, 2... Terminal board, 10a to 10d... Speaker mounting hole, 11... Hole, 21... Turntable, 27a
...first detection section, 27b...second detection section, 29...
Control unit (motor drive circuit).

Claims (1)

[Claims for Utility Model Registration] A speaker assembly is mounted and fixed on a turntable that is rotatably supported with respect to the main body so that its center axis coincides with the rotational axis of the turntable,
an assembly mounting means configured to assemble a speaker on the turntable; On a circle or on a concentric circle of the virtual circle, there is no other pair that is in a specific direction with respect to each component of the speaker assembly and that has a congruent positional relationship on any of the arc parts on these circles. In order to detect the first hole and the second hole formed in advance, respectively, the positions of the first hole and the second hole with respect to the center axis of the frame with respect to the rotation axis of the turntable are determined. first detectors that are supported by the main body and are arranged to face the turntable so as to have a congruent positional relationship and to be oriented in a specific direction with respect to each component of the main body; part and 2nd
a detection means constituted by a detection section, and a speaker assembly is mounted and fixed on the turntable, and the turntable is rotated so that detection outputs of the first detection section and the second detection section can be obtained simultaneously. a speaker assembly device comprising: control means for controlling the rotation of the turntable to be stopped and for positioning and arranging the speaker assembly on the turntable in a predetermined direction with respect to the main body when the turntable is turned; .