JPS4873127

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DESCRIPTION JPS4873127
(1) Title of the Invention 3 Patent Assignee Address Osaka Prefecture Kadoma City Oji Kadoma
Address 1002 Name (582) Representative Matsushita Electric Industrial Co., Ltd. Matsu 'Sho
Shoji 4 Agent 〒 517 Address Osaka Prefecture Kadoma City Oji Kadoma Address 1006
Matsushita Electric Industrial Co., Ltd. Inside the company i. ■ Japanese Patent Office published
patent public-■ JP 48-73127 @ published Japanese patent 48. (1973) 10.2 Request for
examination of examination-(all three pages) Office internal reference number 10 Japan
classification 111 jr tatami-/ l /, ZK: 131 1 1 beno specification 1, title of the invention 1, title of
the invention speaker 2 Forming a hemispherical shape by connecting a plurality of cone papers
claimed in claim 5 by a flexible connection portion, and arranging a single voice coil bobbin
having a chair coil on the central axis of the hemispherical surface, A speaker configured such
that the voice coil connects the respective cones to a bin and causes the cones to vibrate in the
radial direction of the spherical surface by vibration in one direction of the voice coil bobbin. 3.
Detailed description of the invention 1m 1 of the invention The present invention forms a
hemispherical shape by connecting a plurality of cone paper by a visible connection, and this
cone paper is spherically shaped by the vibration of one voice coil bobbin in one direction. The
present invention relates to an omnidirectional speaker adapted to vibrate radially. An
embodiment of the speaker according to the present invention will be described below with
reference to the drawings. <1) is nine corn paper (R, (8) I (4) I (6) e (6) # (7) l (8) 12 (9), (2), (8, 9)
11 is a vibrating portion formed in a hemispherical shape by being connected by a flexible
connecting portion 4 at one end, and cone paper (3) at the lowermost position of this 11 m 1118
(1). The lower end portions of (s), (7) and (9) are supported by the flame (2) K through the
flexible connecting portion (2). A magnet (b) is provided on the center -A of the vibrating portion
(1) at the inner central portion of the frame (2), while one end inside the center wK of the cone
paper (2) is deposited, The voice coil (2) disposed at the lower end portion of the die coil bobbin
(2) is disposed at the lower end of the die coil bobbin (2), and the voice coil bobbin (2) has the
magnee, two poles (j4a), (14b '). ) Has been inserted into Seki. One end of a rigid connecting rod
N7a) or (17N is rotatably connected to the voice coil bobbin (to), and the other end of the
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connecting rod (17a), (17b) O is connected to a connecting rod (18a), ( 18b). One end of each of
(19a), (19b), (2 + Ja), and (20b) is rotatably connected, and this connection @ (18a). (1?
a) Each other end of * (20a) is rotatably connected by connecting rods (2 + a) and (22a), and each
other end of connecting rods (18b), (19b) and (20b) The parts are also rotatably connected to
each other by connecting rods EndPage: 13th... (21b), (22b). The connection points of the
connection rods (18a) and r21a and the connection points of (18b) and (21b) are rotatably
supported by the upper ends of the supports (23a) and (23b), respectively, which are fixed to the
frame osfCI1. ing. The connecting rods and shafts are rotatably connected between the
connecting points of the connecting rods (19a), (Ha) and (22a) and the central part of the cone
paper (8), and the connecting rods (20a) and (22m) · (22m) Between the center point of the pin
and the cone paper (the tie rod is rotatably connected between the center of the b), the
connecting rod is rotatably connected between the connecting portion of (21b) and (22b) and the
central portion of the cone paper (7), and further, connecting rods (20b) and (22b) Between the
connection point of and the central part of the cone paper (6), a connection bar is rotatably
connected. In Nao, corn paper (4), (6) and (1) 1 (41) II as well, it is similarly connected to the
voice coil bobbin by the connecting rod. As described above, when the voice current is supplied
to the voice coil, the voice coil bin (2) vibrates up and down as shown in FIG. On the other hand,
the connecting rod-261 S is rotated in the radial direction of the hemispherical surface as shown
in FIG. In addition, connecting rod (18b), (1? Similarly in b), (20b), (2, 1b) and (22b), the
connecting rod with the support (25b) is pivoted as a fulcrum, whereby the connecting rod -94 is
as shown in the figure. Vibrate and move cone paper (7), (6) f @. The same applies to the other
corn paper (4), (6), (8) and (9). The vibration direction of each cone paper (R, (s), (41, (s), (e), (7),
(8) t (91 ° (roll)) is the radial direction of the hemispherical surface and The sound generated by
the vibration of the cone paper is uniformly generated from the hemispherical surface. Therefore,
the high-pitched portion is not worn and lowered particularly at any position around the speaker
of the present invention, and it can be heard at the same level at any surrounding places, which is
practical Is a big thing. 5・′−ノ
4. Brief Description of the Drawings FIG. 1 is a perspective view showing an embodiment of the
speaker according to the present invention, and FIG. 2 is a schematic cross-sectional side view of
the same. (', (8), (41, (5), (6), (7), (8)! (9), (2)... Cone paper, (b)... Magnet, (2). . Name of the
attorney Attorney Nakao et al. 1 person Fig. 1 Fig. 2 EndPage: 26 Attorneys other than the above
(6i 52) Attorney Minoru Ogino EndPage: 3
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