JPS58162197A - Assembling method of speaker - Google Patents

Abstract

PURPOSE:To simplify the assembling of a speaker and to improve the accuracy of measurement by adhering a diaphragm to the peripheral wall of a front cover and then adhering and fixing a voice coil to a prescribed position of the diaphragm on the basis of the peripheral wall. CONSTITUTION:The peripheral side 23 of the diaphragm 2 is adhered to the peripheral inwall 12 of the dome-like front cover 1. A cylindrical jig not shown is pressed against the peripheral inwall 12 of the front cover 1 and the upper end of the voice coil 3 is adhered to a ring-like projected part R on the back of the diaphragm 2. Pins 14 projected from three projection parts 13 attached to the front cover 1 are inserted into the holes 54 of three projection parts 53 prepared on a resin york 5. The length of each pins 14 is set up larger than the height of a coil bobbin 3. A magnetic york 4 consisting of magnetic plates 41, 41 and a magnet 42 is fitted to the center part of the resin york 5 and the voice coil 3 is inserted into the magnetic gap 43 to be freely oscillated. Said constitution makes easy to assemble a speaker and improves the accuracy of measurement.

Description

[Detailed description of the invention] The present invention relates to a method of assembling a speaker.

FIG. 1 shows an exploded perspective view of a conventional speaker, and FIG. 2 shows an assembled sectional view thereof. In these figures, (1) is a dome-shaped front cover with a large number of sound emitting holes, and (2) is a dome-shaped front cover with a dome in the center, and an edge part on its outer periphery. The diaphragm is an integrally formed diaphragm having an outer periphery that matches the outer periphery inner wall opening of the front cover (1). (3) is a voice coil that is adhesively bonded to the annular end portion of the back surface of the dome portion of the diaphragm (2).

(4) is a magnetic yoke consisting of two magnetic plates F411 Ill and a magnet (4), voice call (3) above.
(5)
is an annular resin yoke fitted around the outer periphery of the magnetic yoke (4), and has a plurality of ventilation holes f511, t511...
is provided, and a protrusion @ which matches the outer peripheral inner wall a21 of the front cover (1) is formed on the outer periphery of the upper surface thereof.

In the conventional method of manufacturing a speaker with a new configuration, as shown in FIG. 2, a voice coil (3) is coupled to a diaphragm (2), and this voice coil (3) is magnetically coupled.

However, according to the conventional method of prayer, the position of the voice yaw coil (3) is the resin around the diaphragm (2) (c)! Installation to the Yudachi≠Hall (5) depends on accuracy, and if this accuracy is low, there is a drawback that a contact accident between the voice coil (3) and the magnetic plate 1411 f4υ of the magnetic yoke (4) may occur. Ta.

Also, since it is necessary to use adhesive to directly adhere the periphery (c) of this diaphragm (2) to the protrusion @ of the resin yoke (5), this adhesive flows out inside the diaphragm (2). As a result, there was a risk that the magnetic yoke (41) would enter the magnetic gap (43) of the magnetic yoke (41) that blocked the ventilation holes of the resin yoke (5).

The present invention has been made in view of the above points, and will be described in detail below.

FIG. 6 shows an exploded perspective view of a speaker according to the present invention, and FIG. 4 shows an assembled sectional view thereof. In these figures,
fi+, +21, +31.141, +51 respectively indicate the front cover, diaphragm, voice coil, magnetic yoke, and resin yoke, similar to the conventional speaker shown in FIGS. 1 and 2, and the front cover (1) and a resin yoke (51 is obtained by molding ABS resin, for example, and a diaphragm (2)
is obtained by hot pressing a polyester film, for example. On the other hand, the voice coil (3) is of pobinless type and is obtained by adhesively bonding the voice coils themselves to each other. Magnetic yoke +41 consists of two magnetic plates +411
It has a structure in which a ferrite magnet (manufactured by Co., Ltd.) is sandwich-bonded between +411 and bonded by fitting into the annular resin yoke (5). The difference between the speakers shown in these figures and conventional speakers is that five protrusions are formed at approximately equal distances on the outer periphery of the resin yoke (5), and these protrusions 53 (This is because a through hole is provided in each of 531-. Furthermore, six protrusions 03 are formed at approximately equal distances on the outer periphery of the front cover (1). However, each of these protrusion α openings 31a3 corresponds to each through hole of the protrusion Kasumitsuchiso of the resin yoke (5), and the height of the voice coil (3) is It is located at the point where the pin member 04 (14114) of 6 trees, which has a greater height than that, is planted.

Next, a method for assembling the speaker of the present invention having the above-described configuration will be described in detail.

First, as shown in Fig. 4, the dome-shaped front cover fi
The outer periphery □□□ of the diaphragm (2) is inserted into the + outer periphery inner wall a2 and bonded with adhesive. Therefore, this adhesive will not flow out to the yokes +41 and +51. Next, the outer surface of the cylindrical jig is brought into contact with the outer peripheral inner wall O2 of the front cover,
While in contact with the inner surface of this jig, the upper end of the voice coil (3) is adhered to the annular end of the back surface of the dome portion (2) of the diaphragm (2) with adhesive. Due to this, the voice coil (3) is connected to the diaphragm (2) concentrically with the outer circumferential inner wall (2) of the front cover (2) as a reference.
is combined with Next, each protrusion a313 of the front cover (1)
The pin members Q41 and uaαO respectively planted from the resin yoke (51) are inserted into the through hole 61 provided in each protrusion 53 and the hammer.
Penetrate into 164□□□. At this time, these pin members α
404) The height of 0Ω is greater than the height of the voice coil (3), and the pin member a4a is lower than the lower end of the voice coil (3).
Since the lower end of 41aa is located lower, the lower end of the pin member ah am a4) of the front cover reaches the entrance of the through hole of the resin yoke (5). , the voice coil (3) is connected to each yoke +41 +51
There have been no accidents resulting in deformation due to contact. In addition, the pin member α Roro 4 of the front cover is a through hole of the resin yoke (5).
After it is inserted into the pin member 04...
・The through hole (goods)... acts as a jig, and the front cover (
The outer peripheral inner wall α2 of 1) is the annular protrusion of the resin yoke (5).
At the same time, a voice coil (3) concentric with the outer periphery of the front cover (1) is inserted into the magnetic gap (43) which is concentric with the protrusion □□□. Therefore, each pin member α4 of the front cover (1) protrudes from the through hole of the resin yoke (5) to the back side.
1041 By heat-sealing the lower end of Q41 using a soldering iron etc., the front cover (1) and the resin yoke (5) are connected.
) are combined together, and in the above explanation,
Although the resin yoke (5) is shown serving as a frame, if the magnetic yoke (4) also serves as this frame, the resin yoke (5) is not necessary.

As is clear from the above explanation, the method for assembling the speaker of the present invention is to glue the diaphragm to the outer peripheral wall of the front cover, and then glue and fix the voice coil to a predetermined location on the diaphragm based on this outer peripheral wall. The dimensional accuracy of the diaphragm periphery and its installation are such that the voice coil can be placed accurately within the magnetic gap without contacting the yoke member by fitting the outer periphery on both sides. Possibility 1. In addition, since there is no need to use adhesive to bond the periphery of the diaphragm yoke and the main body member, the adhesive flows into the ventilation holes and magnetic gaps provided in the yoke member, allowing them to pass through. Accidents of clogging pores and magnetic gaps can be prevented.

[Brief explanation of drawings]

1 and 2 are an exploded perspective view of a conventional speaker and an assembled sectional view thereof, and FIGS. 6 and 4 are an exploded perspective view and an assembled sectional view of a speaker according to the speaker manufacturing method of the present invention. It is. (Old...Front cover, I...Bin parts,
(2)...Finger plate, +3+...Voice coil, (4)...Magnetic yoke, (43...
...Magnetic gap, (5)...Fall yoke,
(Foundation)......Open hole. Figure 1 Figure 3

Claims (1)

[Claims] 1) The outer periphery of the diaphragm is glued to the outer periphery of the front cover, and then the voice coil is glued and fixed at a predetermined location on the diaphragm using the outer periphery of the front cover as a reference, and then a yoke member having a magnetic gap is attached. A method for assembling a speaker, characterized in that the voice coil is inserted into a magnetic gap of a yoke member by fitting the outer peripheral part of the front cover to the yoke member.