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JPS56130393

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DESCRIPTION JPS56130393
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional
speaker, and FIG. 2 is a cross-sectional view of the speaker of the present invention. 1.6 is a
passive diaphragm, 2 is a front frame, 3 is an edge, 4 is a diaphragm, 5 is a frame.
[Detailed description of the invention] In the present invention, a passive vibration J plate is
attached to the front of the speaker for cutting, and the passive vibration a7th is constituted by a
honeycomb core, so that the strain gauge of the one-round circlary mantissa field is flush: It is
worth one extra speaker. In the prior art, as shown in FIG. 1, a magnetic circuit is installed with
seven balls-ball 7, magnet 8, plate 9 and a frame 5 is fitted on the upper surface of the plate 9. A
magnetic gap is formed by the plate 9 and the voice coil 10 is placed at the center of the
magnetic gap, drooping the voice coil 10 at the center of the quill circle 4 plate 1 and sticking
the periphery to the inner bottom of the frame 5 The voice coil 10 is held by the damper 11 to
be worn, the peripheral portion of the diaphragm 40 is adhered to the outer peripheral edge of
the frame 5, and the hour glass cap 12 is adhered to the central portion of the diaphragm 4. A
passive diaphragm 1 plate 6 made of an aluminum plate or a paper plate is disposed on the front
curve of swing # 1 and 4 and the inner peripheral edge of the edge 3 is attached to the outer
periphery of the passive diaphragm 6 and the outer peripheral edge of the edge 3 is dished It is
stuck around the center hole of the front frame 2, and the outer peripheral end of the front frame
2 is stuck to the outer peripheral edge of the frame 4. By the vibration of the diaphragm 4, the
compliance of the air chamber 13 surrounded by the diaphragm 4, the dustproof cap 12, the
front frame 2, and the passive vibration # sales 6 is transmitted to the passive diaphragm 6. For
this reason, high-pitched lap 1! Although the frequency band is smaller, distortions and sharp
peaks near the upper limit frequency of the driving-speaker are eliminated. However, the flexural
rigidity of the passive diaphragm is low, and the distortion due to the split resonance has a
drawback of coming out from a low frequency band of 3. The main idea--The above-mentioned
word 1 was devised to eliminate the drawbacks. If the embodiment shown in the drawings is
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described, as shown in FIG. 2, the speaker drive u1 part is the same as the conventional example.
The honeycomb core of the plate 4 is made of a light-impregnated material such as paper, resin
impregnated paper such as phenol or acrylic, or aluminum foil on the @ side of plate 4, and resin
impregnated paper such as paper or phenol or acrylic on both sides such as aluminum foil Open
a plate-like front frame 2 with a plate 1 on which a skin material is to be attached and the inner
peripheral edge of edge 3 pasted on the outer periphery of a balaciash diaphragm 1 and an
opening at the center of the outer edge of edge 3 It is a slider that is attached to the periphery of
the part and the outer peripheral end of the front frame 2 is attached to the outer peripheral
edge of the frame 5 to which the peripheral part of the drive diaphragm 4 is attached. The
Tochigi device adheres the inner peripheral edge of the edge 3 to the outer periphery of the
passive frame [1 1 1 l], and directly adheres the outer peripheral edge of the edge 3 to the outer
peripheral edge of the speaker frame. It includes a speaker attached to the opening and having
the same @ rice.
The four-invention speaker has the above-mentioned structure, so by forming the balasive wall
bowl 1 into a honeycomb structure, it is approximately 1000 times as soft as a paper with a
bending weight and a one-sided weight. The split resonance frequency is about 100 times larger
than that of a single aluminum plate, and produces a resonant frequency higher than l history
band. Therefore, the generation of distorted sound in the use band is prevented. The present
invention has good driving ability and nearness, is high-performance frozen, and has the value of
being a dog as a directional unit.
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