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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a sheet (material) of a
conventional laminated cone, and FIG. 2 is a perspective view of the laminated cone according to
the present invention. The top view which shows the sheet ¦ seat of a bonding cone, FIG. 4 is a
perspective view of a bonding cone similarly. A, B · · · Bonding cone, 1 · · · Sheet, 2.2 '· · · Bonding
margin, 4 · · · square cut.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated cone
for an audio device which is used as a lifting plate of a speaker, etc., by forming a chamfer 9 at
the end of the lamination margin of the sheet as the material of the cone. It is made to be able to
eliminate the level ¦ step difference in the outer peripheral part among the cones by the
elongation K of the material at the time of bonding. 44 houses, ry. As for the red ume lamination
corn corn in the door conventional, 1st 1. As shown in FIG. 2, when the cone paper is die-cut, a
collapsible sheet 1 is formed and pasted O strips 2, 2 'at both ends thereof are pasted with an
adhesive to form a conical shape 1+ jL , And has a configuration in which the neck rising portion
3 is formed by pressing the sheet inner peripheral portion (dotted line P). According to the above
construction, since there is a difference in the elongation of the sheet in the direction of the cone
slope of the sticking allowances 2 and 2 ', as shown in FIG. . For this reason, conventionally, it is
necessary to spend a cutting process on the island in order to prevent partial deformation of the
edge and to prevent inclination between the linearity and the vibration direction of the cone, and
this processing is temporarily once three-dimensional That is, since it is carried out with respect
to a conical shape, there is a disadvantage such as the number i s 賢 n which makes the
apparatus 1 [coarse and processing costs increase]. The present invention is made to solve the
above-mentioned drawbacks. That is, in the present invention, as shown in FIG. 3 and the mouth
(as shown, the chamfer 4 is formed on the inner periphery and the outer peripheral edge of the
bonding margin 2 of the sheet 1 or both bonding margins 2, 2 'of the sheet 1 Apply. The square
cut 4 is formed into a desired shape such as forming the edge of the ridge in a circular arc shape
or cutting it in a triangular shape as shown in the figure, but the point is that it is the largest at
the time of bonding 1) 2 and 2 ' Consider the growth rate i to be much larger than the area
equivalent to it. This square cut is NI bonded and laminated in the same manner as the sheet 1
pipe, and the press forms an O-neck top by the 41st! ! As shown in IIK, a step-less laminated cord
/ B is obtained. As described above, the present invention is obtained by chamfering the inner
periphery and outer periphery 1 edge of the bonding margin of the sort which is the material of
the bonding cone, so that no level difference is generated at the time of bonding and forming 4,
4. Thus, it is possible to prevent, in advance, breaking and the like in the vibration direction of
the cone without subjecting to the step cutting process as in the prior art. In addition, chamfering
can be easily performed by deforming a part of the entire sheet, and the cost of processing the
cone can be reduced to a large size. Figure 1 of the drawing is a plan view showing a sheet (i
material) of a conventional laminated cone, FIG. 2 is a perspective view of the laminated cone,
FIG. The flat ik 1 figure which shows the sheet ¦ seat of the bonding cone which concerns on this
invention, FIG. 4 is a perspective view of the bonding cone to the same. .
Mu, B · pasting 4i 1 corn, 1 ... n-)), 2.2 'pasting allowance, 4 · corner taking ○ utility model
registration. Applicants Pie 4 = A Co., Ltd. Mogami Denki Co., Ltd. Agent Shino Hino " " * (:, '3' 5
I 52 F [l Figure 2 □ A □ 〆 (1, 1, 1. ˜ Pb. /。 Approximately 2. a. (A) 111 □ -51 □ 4 ■ ■ (tl)
7--, jPP 9 84 ° 4 · · · · 2 · 4 '44 Figure 4 / B □ 43787 · utility model registration application Le
Pioneer Ltd., Representative agent Hideo Nono 1Q-J '˜ 6, Inventors other than the above or
applicants for utility model registration (1) Applicant's address Yamagata-gun, Muro-gun, Omachi
Shincho Jushi, Shionano 954 Electric Co., Ltd. Internal address Kumagai Katsuyoshi Address
name 14 places Name Address name (2) Utility model registration Applicant address Yamagatagun, Muro-gun, Muromachi, Omachi New Town Shionano 954 Chonochi Machine Co., Ltd.-"" Representative Tsuchiya-husband Address name Name representative <2- J ゝ · · · →, no
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