close

Вход

Забыли?

вход по аккаунту

?

JPS5140333

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS5140333
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, FIG. 2 and FIG. 3 are side views of an example of
a conventional magnetic circuit, with a portion shown in cross section. FIG. 4 is a perspective
view of a kite kite used in the embodiment of the present invention. FIG. 5 is a cross-sectional
perspective view of the parts used in the embodiment of the present invention. FIG. 6 is a side
view of an embodiment of the present invention, partially shown in cross section. FIG. 7 is a
perspective view of the embodiment of the present invention. 1.1 ', 1 "... center pole, 2 ... magnet,
2 ° 2" ... annular magnet, total · yoke, 4 ... plate, 5 · · · bank plate, 6 · · · · Yoke, σ · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·, a ', a' '... gap, N, S ... both poles of the
magnet. 85-Actual opening 5I-40333 (2) Yoshi 5 Figure 86
DETAILED DESCRIPTION OF THE INVENTION 1) The present invention relates to a structure
with a 0 @@ circuit oyit for magnetically vibrating a voice coil in a speaker. The conventional
magnetic circuit can be roughly divided into an inner magnetic circuit shown in FIG. 1 and an
outer magnetic circuit shown in FIG. 2. In both figures, 1.1 'is a center pole and 2 is a magnet. , R
is an annular magnet, 3 is a yoke, 4 is a grate, 讐 5 紘 pack play), IL, I / indicates a gap for
positioning the voice coil between the center pole and the 讐 2 page or plate, the first The
internal magnetic circuit shown in the figure has a small magnetic leakage advantage because the
magnet 2 is close to the gap IK under the center ball 1, but increasing the length of the magnet 2
to obtain the required magnetic energy The magnetoresistance increases. The external magnetic
circuit shown in FIG. 2 has a large magnetic leakage, but can increase the cross-sectional area of
the magnetic flux passing area under the annular magnet 2 '. Suitable for use. In the outermagnet-type surrounding path shown in FIG. 2, K for further increasing the cross-sectional area
of the magnetic flux passage of the annular magnet 2 must increase the outer pole of the multiglobular magnet γ. . The outer diameter of the packing plate 5 must also be increased. The
center hole of the annular magnet 2 ′ ′ is bonded to the lower outer periphery of the center
pole 1 ′ ′, and the outer periphery of the annular magnet 2 ′ ′ is bonded to the inner
12-05-2019
1
periphery of the crown 60 ′ ′ according to a modification of the external magnetic circuit
shown in FIG. In order to maintain the gap a between the seventh pole 1 and the pole 6 and
increase the cross sectional area of the magnetic flux passing page 3 k, the thickness of the
annular magnet 2 ′ ′ is made large. At the same time, it is good to lengthen the center ball 1 ′
′ and to make the height of the coronary stroke 6 higher. However, it is difficult to magnetize
the annular magnet 2 ′ ′ of the magnetic circuit shown in FIG. 3 after incorporating the high
permeability material (eg, ferrite) in advance in order to make the inner peripheral surface and
the outer peripheral surface have two poles. It is difficult to obtain the dimensional accuracy of
the gap rr, which is hindered by the magnetic force of the annular magnet 2 ′ ′, but it is
difficult to obtain the dimensional accuracy of the gap rr. The parts of the disc and the missing
part due to friction or friction may be attached to the facing surface K11 of the gap arr to make
the effective accuracy of the gap a ′ ′ poor. The present invention is a magnetic circuit having
a nineteen structure for the purpose of eliminating the above drawbacks. The invention will now
be described by way of example with reference to the drawings. Prepare a wedge-shaped guide 7
made of nonmagnetic material as shown in FIG. 4, and insert a center pole l ′ ′ into the center
hole T of the wedge-shaped guide 7 as shown in FIG. , And insert the outer periphery of the
scissor-like guide 7 over the inner periphery Kf 8 of the coronary artery -4 J [6], and place the
center pole 1 between the inner periphery of the upper surface central hole 6 'of the coronary
artery 1-6. The gap aII is determined, the outer periphery of the wedge-shaped guide 7 is
attached to the inner periphery K of the M-shaped blade 60, and the center hole of the annular
magnet 20 is fitted to the center ball 1 ′ ′ It adheres to the wedge-shaped guide 7 to complete
the assembly as shown in FIGS.
In the above assembly structure, with the wedge-shaped guide 7 and the center pole 1 ′ ′
correctly positioned at the center of the center hole of the coronal yoke 6, the upper end position
of the Kll-like magnet 2 can be determined by determining the gap aq. In addition, the structure
of the above magnetic circuit can be applied to a moving coil type microphone. As described
above, according to the present invention, the assembly of the magnetic circuit can be carried out
very easily and reliably. However, the gap can be simply and reliably determined by using the
wedge-shaped guide as a jig without being disturbed by magnetism, and the wedge-shaped guide
is not blocked by the wedge-shaped guide and the missing piece of the magnetic stone does not
enter the gap IIK.
12-05-2019
2
Документ
Категория
Без категории
Просмотров
0
Размер файла
9 Кб
Теги
jps5140333
1/--страниц
Пожаловаться на содержимое документа