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JPS5643996

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS5643996
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of the main part m1 of the
conventional speaker apparatus, FIG. 5 is a cross-sectional view of one embodiment of the
speaker apparatus according to the present invention, and FIG. FIG. 5 is a partial cross-sectional
view of a state where the ring is fixed to a cone, and FIG. 11 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и Damper, 17 и и и и voice
coil bobbin, 18 и и и
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
Ring part , 20c и и и и и и и и и и connection.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker
apparatus in which the strength of the joint portion between a voice coil bobbin and a diaphragm
is increased to prevent the diaphragm from being broken. Voice coil costs, S, in a movable wire
ring type speaker device. The force generated in the 1-inch 37 gile is transmitted to the
diaphragm (cone paper) through the voice coil bobbin, but a thick and fragile portion is applied
to the junction between the voice coil bobbin and the neck portion of the diaphragm. For this
reason, at the time of large input, the voice coil bobbin is deformed 7 to generate distortion, and
in some cases, breakage occurs such as adhesion scraping, cutting of the lead wire of the voice
coil bobbin, or separation between the bending portions of the neck portion of the diaphragm.
Heretofore, there has been an example in which a reinforcement ring of a neck portion of a
diaphragm is adopted against the deformation of the voice coil at the time of the large input and
the generation of the distortion caused by this. That is, FIG. 1, FIG. 2, and FIG. 2 are crosssectional views of the main parts of the conventional slider device as described above. In FIG. 1, a
voice coil 2 is wound around the lower outer peripheral surface of an 11 cylindrical voice coil
bobbin, and this voice coil 2 is formed between a pole piece 3 and a plate 4 which form a
magnetic circuit. It is disposed in the magnetic gap. A damper 5 damps the vibration of the voice
coil 2 and has an inner edge fixed by an adhesive to the outer peripheral surface of the voice coil
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bobbin 1 in order to hold the movable portion in a correct position. ???? With a 6 Fi
diaphragm (corn), the neck margin 6 a is fitted to the upper outer surface of the voice coil bobbin
1 and is fixed by an adhesive together with the reinforcing ring 7. ?????????????
??? Since the upper end of the voice coil bobbin 1 is reinforced by the reinforcing ring 7, it
becomes deformed. Further, in FIG. 2, the reinforcing ring provided on the outer periphery of the
nine-piece voice coil bobbin 1 is fixed together with an adhesive when the inner end of the
damper 5 is fixed to the outer peripheral surface of the voice coil bobbin 1. The other parts are
the same as in Fig. 1 and the explanation is omitted. In this example, since the voice coil bobbin 1
is reinforced by the central St-reinforcement ring 9, it does not deform as well. As described
above, in the conventional speaker device, the reinforcing ring is fixed to the voice fill bobbin,
and the voice coil bobbin is mechanically reinforced to prevent deformation, but this time the
neck portion of the diaphragm is Accidents and---that adhesion part of the cause of peeling
occurs often occur. In other words, ordinary corn is made by mixing several kinds of pulp and
fibers as needed, and is formed into a laminated state, and the fibers are parallel to the cone
surface, and the direction of normal force is in this surface The intercostal strength is weaker
than the tensile strength in the direction parallel to the surface.
In this large-amplitude wedge, there is a drawback in that the neck portion of the diaphragm
causes separation of the layers along the broken lines in FIG. 1 and FIG. The present invention
has been made in view of the above-mentioned point, and its object is to provide a cusppy force
device for making the bonding between a voice coil bobbin and a diaphragm sufficiently strong
and preventing deformation. It is. Hereinafter, this invention will be spoofed in detail based on
the drawings. FIG. 3 is a cross-sectional view of one embodiment of the speaker device according
to the present invention. In the figure, 11 is a pole piece, 12 is a yoke, 13 is a magnet, and 14 is a
plate. These constitute a magnetic circuit, and the outer periphery of the pole piece 11 and the
inner 4-9 of the plate 14 A ring-shaped magnetic gap is formed. Further, 15 is a frame fixed to
the plate 14, 16 is a tamper fixed to the frame 15 with the outer peripheral end fixed to the
frame 15 and has a hole at the center, 17 is a cylindrical voice coil bobbin inserted in the hole of
the damper 16, 18 voice Voice coil wound around the lower outer peripheral surface of the coil
bobbin 17 and disposed in the magnetic gap, 19 is a cone as a diaphragm, 19a is a margin
formed on the neck of the cone 19, 20 is a reinforcing ring, 21 is a center It is a cap. The
reinforcing ring 20 is adhered to the outer peripheral surface of the voice coil bobbin 17 by
adhesion so as to cover the margin 19m, and at the same time, the inner edge of the damper 16
is also adhered to the approximately central extracorporeal blood of the voice coil bobbin 17
with an adhesive. . FIG. 4 is a partial cross-sectional view of a state in which the reinforcing ring
20 is fixed to the cone 19. The reinforcing ring 20 is formed in an inner diameter dimension
which surrounds the outer periphery of a ring portion 20m which is l1ly formed in an inner i
dimension surrounding the outer periphery of the voice coil bobbin 17 and an outer periphery of
a cone margin 19m. In the drawing of FIG. 4 in which the ring portion 20b and the two ring
portions 20m and 20b are integrally connected, they are separated from the horizontal
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connection portion 20e. Then, the reinforcing ring 20 is fixed to the cone 19 with an adhesive so
that the inner peripheral surface of the ring portion 20b surrounds the outer peripheral surface
of the margin portion 19m. At this time, the inner circumferential surface of the seal portion 19m
and the inner circumferential surface of the ring portion 20a are substantially in the same plane.
Figure 4 shows this situation. The cone 19 to which the reinforcing ring 20 is fixed as described
above is fixed to the outer surface W of the voice coil bobbin 17 with an adhesive as shown in
FIG. 3 in the same manner as in the conventional method. At this time, it is simultaneously fixed
to the voice coil bobbin 17 by the inner frame end main adhesive of the damper 16.
Thus, according to the structure of the voice coil bobbin 17, the ring portion 20m surrounds the
circumferential surface of the voice coil bobbin 17 and the reinforcing ring 20 is fixed to the
voice coil bobbin 17 in a wide area, and the nineteenth portion 19a includes the voice coil bobbin
17 and the ring 1t20b The coil is firmly joined by the voice coil bobbin 17 and the cone 19
reinforcement ring 20 because it is clamped from the inner and outer peripheral surfaces. ? 6Also, since the neck portion of the cone 11 is held, it does not peel off even at large amplitude.
FIG. 5 is a cross-sectional view of an essential part of another embodiment. The reinforcing ring
30 includes a ring portion 30m formed in an inner diameter dimension surrounding the outer
periphery of the voice coil hovin 11, a ring portion 30b formed in an inner diameter dimension
surrounding an outer periphery of a bevel 19b of the cone 19 and a ring portion In addition to
the connecting portion 30e connecting the lower end of the ring 30a and the lower end of the
ring portion 30b in an integrated manner to form a U-shaped cross section, the ring portion 3
formed in an outer diameter dimension entering the inner periphery of the voice coil bobbin 17
and a connecting portion 30 for connecting the upper end of the ring portion 30a and the upper
end of the ring portion 30d so as to be integrated in a U-shaped cross section. The cone 19 with
the reinforcing ring 19 held by the ring portions 30m and 30b and the reinforcing ring 30 fixed
by the adhesive is held by the ring portions 30m and 30d by the upper end of the voice coil
bobbin 17 by the adhesive Wear the same clothes. The bonding strength between the voice coil
bobbin 17 and the cone 19 is further improved than in the above embodiment. As described
above, according to the speaker device according to the present invention, the voice coil is
completely prevented from peeling off because the neck portion of the diaphragm is reinforced
by the single force structure, and the voice coil is used together with the voice coil. Since the
bonding area of the weir bin and the diaphragm is substantially increased by the reinforcing ring
and mechanically reinforced, the bonding strength between both is increased and deformation is
prevented. Therefore, the bonos coil bobbin and the neck portion of the diaphragm are not
deformed at a large swing of 11 o'clock, and the voice coil contacts the magnetic circuit to
produce an excellent effect of eliminating an accident or the like generating an abnormal sound. .
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