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JPS4839022

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DESCRIPTION JPS4839022
Patent office commissioner Takehisa Ido 11 collapsing "d 茗 T-憾 U box speaker 3, patent
applicant 111 specification 1, title of the invention
Mid-high range speaker
3. Detailed Description of the Invention The present invention relates to an improvement mainly
in the middle and high frequency range of the audio frequency band 11), especially the
improvement of the portion usually referred to as the edge of the support system of the
diaphragm. If “detail ≦≦” removes the asymmetry of the edge due to the back and forth
motion of the vibration system, and based on it, the distortion of the reproduced sound is
removed and removed. It is intended to improve human resistance characteristics so as to be able
to withstand a large exercise swing N α2 width. (1) Conventionally, several types of speakers are
generally used at the edge of this type of speaker, but with the exception of the flat edge, those
with other shapes blindly asymmetry to back and forth movement as exemplified in FIG. It is In
the figure, (-1 indicates the middle point of interlocking, (i) and (ii) indicate good ranges of
linearity, and (cl indicates ordinary support points). As is apparent from FIG. 1, in the
conventional type, the fixed end of the edge is fixed at the middle point of a good range of
linearity (not supported by bi, but fixed at a considerably deviated point (C)) The deviation
tolerance of the edge is asymmetric. Therefore, when a large input is given, the amplitude of the
diaphragm inevitably becomes asymmetrical, and the even-order distortion increases to degrade
the sound quality. In recent years, for example, the performance of front-ends such as sound
reproducers and records has generally been significantly improved, and in particular, the
increase in the power output of the boosters is remarkable, Those who prefer to use it tend to
prefer it, for example, EndPage: 1 tooth, when writing a wide record, etc. in the range of Thai
language sok range, in the conventional speaker, on the contrary, increase in distortion lowers
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the quality of 11 qualities. If the scale of the equipment 1'j is carelessly removed, there is an
increased risk of damaging the speed h- due to the excessive output. . Therefore, it is necessary
to improve the frequency characteristics, distortion characteristics, etc., of course, in order to
improve the frequency characteristics, distortion characteristics, etc. 1. The resistance to input q
′ ′ j ° is modified 1 q. 11. Without losing the characteristics 11. It is necessary or necessary
to consider enough to withstand even a temporary excessive input. 1 and 4 = Invention is 1) In
particular, the method of supporting the edge is improved and the vibration system IJ after both
directions Q5 Symmetrical linearity to reduce distortion, as well as expanding a good range of
linearity with respect to the direction of movement, to provide a 9-h excellent mid-high range
speaker capable of withstanding large inputs. That's what it is. The present invention has been
proposed based on a new technical idea and idea different from the conventional means, and the
two isomorphs of appropriate shape (linearity and other dynamic characteristics are in the same
direction). Bonding so that the edges do not closely touch each other's vibration system such as a
Hois coil's hovin or motive plate so that one of the plates faces the other so that one of them
faces the other. The fixed y1 ^ 1 is fixed with a specific gap which will be described later.
Next, the principle of the present invention will be mainly described with reference to FIG. Then,
the curves qjA (A) and (B1 show the linearity of deviation with respect to the movement of the
edge which is usually used, and there are no places of special marking as shown in FIG. 1 in each
of tA + and (B). However, conventionally, the fifth position is fixed mainly on the voice coil and
the magnetic pole in relation to the magnetic pole, and the edge is the middle point of the good
range of the linearity, as shown in FIG. 1 (bl The point was not fixed but was considerably offset
(fixed at 1,-. In the present invention, bias (bias) is added to each edge in advance, and the curve
(Al, ("l straight line to good range corresponds to the mid point of movement" body) as (ha) and
And I1, whose offset linearity is symmetrical. As is apparent from the description of the
following, even if the input iJ becomes large due to a large input, it is a linear or symmetrical
form of deviation, and since the section u11 is approximately 1 no, it is a distortion. The JC can
be made to significantly reduce the rate. Next, a specific embodiment of the invention is
described in particular with respect to what was carried out at the round edge in FIG. 1) and (2)
show the edges respectively, and the edges are arc concave portions (e) and (h) as shown in the
figure, and it is extended from 1 to 4 in history-Flat outer ring portion (1 ') And (2 '), and are
thereby formed. The respective edges are connected to each other at the same direction, for
example, with the convex sides of the arc facing each other and with an appropriate spacing, with
the respective inner edges thereof connected to the bobbin (4). Further, the outer ring portions
(1 ′ ′) and (2 ′) are placed on the support (6) by sandwiching the spacer (5) between them,
and further held by the shoulder 1 on the holding plate (7) Secure by means of screws (not
shown) passing through. The diaphragm (3) is joined to the bobbin (4), and a coil N0.6 + s + 71)
is wound around the other end of the bobbin (4). (9) indicates the center: 〃 楯, (1o) indicates the
outer peripheral magnetic pole, and (11) indicates the magnet. Next, the method of fixing the
edge, which is the gist of the present invention, will be described in more detail. The two edges
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(11, ((2+ are each shown in FIG. In order to make "e" and "e" be the reference points of the
movement of "e", the distance between "+ Mr <1 <(1 ') and (2"), i.e. (F) and (gl equals 411 in this
interval) shown in FIG. The middle points (dl and (e) are materials to be used, thickness of
crucible, shape and the like (this is different, but they can be fixed).
The present invention, as described in detail above, is a novel arrangement of the edge, a
symmetrical displacement of the edge with respect to the direction of movement of the vibration
system, and a wide range of good linearity. 'The distortion factor generated can be made
extremely small, and the stress is not concentrated on only one end of EndPage: 2N17It's
extremely excellent in human resistance characteristics. hi enough to withstand is not enough to
defeat the edge against excessive human power such as Nao-1 city temperament shocks, etc., but
it is a good quotient of credibility even though it is extremely good of '+ [r temp It is possible to
provide a mid-high range speaker. 'In the embodiment, each edge is described as being separated
from the vibration system such as the diaphragm or the bobbin, or they may be integrated as
appropriate, for example, the diaphragm (3) and the edge (1) may be the same material B, [b]
may be integrally formed. In addition, if necessary, insert i, lj moving material, etc. in the
appropriate direction between the facing edges (1) and (2), as appropriate. You may do it. The
practice of the present invention is one in which the same effect can be obtained even at the
edges of the illustrated round edge ones.
Mid-high range speaker
Fig. 1 is a line for explaining the linearity of the conventional edge (in this case, fJ 2 is a diagram
for explaining the present invention in detail. FIG. 3 is a side view of an embodiment of the
present invention, showing the right side from the central portion in a sectional end view. In the
figure, (1) and (2) indicate the edge, (1 ') and (2') indicate the outer 51 ridge of the edge, (3)
indicates the diaphragm, (4) indicates the bobbin, and (5) indicates the spacer. . Patent applicant
Uo Tsuku Co., Ltd. representative Hayakawa Hitoshi □ EndPage: 3
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