JPH0419912Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a mounting structure for a speaker diaphragm protection net.

<Prior art> A speaker diaphragm protection net is provided above the diaphragm to prevent damage due to contact with other objects, but the presence of the protection net prevents sound waves from propagating during playback. However, since the protective net 8 is often removed and used, it is often used with the protective net 8 placed against the top surface of the mounting plate 6 on which the diaphragm 7 is attached, as shown in FIG. Screws 12 at multiple locations via the presser ring 11
It was attached removably.

<Problems to be Solved by the Invention> However, each time the protective net 8 is attached or removed, a plurality of screws 12 must be attached and detached, which is cumbersome.

In addition, the protective net 8 is generally formed by pressing a woven wire mesh, and the peripheral edge remains cut, so that if the protective net 8 is frequently attached and detached, the peripheral edge may become deformed and damaged. Ta.

In view of the above circumstances, the present invention aims to facilitate attachment and detachment of the protective net 8 and prevent deformation and damage to the peripheral portion through simple improvements.

<Means for Solving the Problems> The characteristic configuration of the mounting structure of the speaker diaphragm protection net 8 according to the present invention is that the outer peripheral edge of the diaphragm protection net 8 is coated with a thick resin 9, and resin 9
A magnetic body 10 is fixed to the bottom, and a diaphragm 7
The magnet 2 is attached to the top surface of the mounting plate 6 on which the magnet 2 is attached.
A recessed groove 6a is formed in which the magnetic body 10 is inserted and removably attracted by the leakage magnetic force.

<Function> According to the mounting structure of the speaker diaphragm protection net 8 according to the present invention having such a configuration, the protection net 8 can be mounted by effectively utilizing the inherent leakage magnetic force of the magnet 2. plate 6
Even though the protective net 8 is attached by magnetic attraction, the recessed groove 6a
Since the ring-shaped resin portion 9 is fitted into the ring, it is possible to prevent the protective net 8 from shifting its position due to vibrations during sound reproduction.

<Example> Lower plate 1 with pole piece 1 in the center
Attach the magnet 2 and the upper plate 3 in that order on the upper plate a, arrange the voice coil bobbin 5 with the voice coil 4 wound therein in the magnetic gap between the upper plate 3 and the upper part of the pole piece 1, and attach the peripheral edge to the mounting plate 6. A diaphragm 7 supported via a diaphragm 7 is provided on the upper edge of the voice coil bobbin 5 to constitute a dome-shaped speaker.

Above the diaphragm 7, a protective net 8 bent into a dome shape to prevent the diaphragm 7 from coming into contact with other objects is attached to and removed from a recessed groove 6a formed on the upper surface of the mounting plate 6. It is set up freely. That is,
The outer peripheral edge of the protective net 8 is covered with a resin 9 (epoxy, polyester, silicone, etc.) in the shape of a thick ring, and the bottom surface of the ring-shaped resin 9 is fitted into the recessed groove 6a to prevent leakage of the magnet 2. A magnetic body 10 is fixed so as to be attracted by magnetic force. A in the figure is a sound absorbing material.

<Another Example> In the example, the ring-shaped resin 9 and the recessed groove 6a have a rectangular cross section, but as shown in FIGS. It may have a triangular shape, and these shapes can be modified in various ways.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments. It can be implemented with appropriate modifications within the scope of achieving the following effects.

<Effects of the invention> As is clear from the detailed description above, the mounting structure of the speaker protective net 8 of the invention is such that the magnetic material 10 is inserted into and removed from the recessed groove 6a formed on the upper surface of the mounting plate 6. The protective net 8 can now be attached and detached extremely easily by simply attaching and detaching it. Furthermore, since the peripheral edge of the protective net 8 can be covered and protected by the ring-shaped resin portion 9, deformation and damage to the peripheral edge of the protective net 8 due to attachment and detachment can be avoided.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, FIG. 1 is a vertical sectional view of the entire speaker, FIG. 2 is a sectional view of the main part, and FIGS. 3 and 4 show different embodiments, respectively. FIG. 5 is a sectional view of a main part showing a conventional structure. In the figure, 2 is a magnet, 6 is a mounting plate, 6
7 is a recessed groove, 7 is a diaphragm, 8 is a protective net, 9 is a ring-shaped resin, and 10 is magnetic powder.

Claims (1)

[Scope of utility model registration request] The outer peripheral edge of the diaphragm protection net 8 is coated with a thick layer of resin 9, and the magnetic material 10 is fixed to the bottom of the resin 9, and the magnet 2 is prevented from leaking onto the top surface of the mounting plate 6 on which the diaphragm 7 is attached. This is a mounting structure for a speaker diaphragm protection net in which a recessed groove 6a is formed in which the magnetic body 10 is inserted and removably adsorbed by magnetic force.