Acoustics – Diaphragm – Mounting or suspension means
Reexamination Certificate
2000-03-30
2001-05-29
Nappi, Robert E. (Department: 2837)
Acoustics
Diaphragm
Mounting or suspension means
C181S169000, C181S170000, C181S164000, C181S173000
Reexamination Certificate
active
06237716
ABSTRACT:
BACKGROUND OF THE INVENTION
1) Field of the Invention
The invention is related to an improved speaker, especially, a kind of latest speaker structure, which enlarges the area of Vibrating Diaphragm to nearly the opening size of support frame to achieve maximum output of sound magnitude by designing standard-sized Vibrating Diaphragm speaker structure.
2) Description of the Prior Art
As shown in
FIG. 1
, the speakers of prior of art include a stand A
1
, and a Vibrating Diaphragm A
2
with end fixture A
3
, which functionally provides firm central fixture, moreover, it achieves flexible movement for Vibrating Diaphragm A
2
with an arch shape design to ensure proper function of the speaker.
However, the output of sound magnitude of a speaker is proportional to the size of Vibrating Diaphragm A
2
. Due to the constraint of exposed end fixture A
3
design, the defectives for the speaker structure of prior of art include that the opening size of stand A
1
is approximately equal to total area of Vibrating Diaphragm A
2
and end fixture A
3
. The effective area for Vibrating Diaphragm A
2
is smaller than that of the opening size of stand A
1
, thus the output of sound magnitude is relatively limited.
Due to the above fact, the inventor conducts constant research and study. Finally, the invention is successful after a series of tests and improvement.
SUMMARY OF THE INVENTION
The primary objective of invention is to design a free of end fixture to maximize the size of Vibrating Diaphragm to nearly the opening size of stand A
1
.
The secondary objective of invention is to provide an inner end fixture for the invention of a new speaker to complement accurate positioning of Vibrating Diaphragm.
To achieve the above objective, the invention herein of a standard-sized Vibrating Diaphragm speaker structure, primarily includes a stand with an enlarged opening in the front and a magnetic element in the rear, a cylinder inside magnetic element, a spring panel sticking with cylinder, and a Vibrating Diaphragm located on the enlarged opening of the stand. The inner face of Vibrating Diaphragm sticks with cylinder. The improved invention is characterized as that the surface of Vibrating Diaphragm is free of end fixture and it sticks with a foam washer, which is located at the lower portion of Vibrating Diaphragm and is stuck with an enlarged opening of a stand. Thus, the effective vibration area for a Vibrating Diaphragm is maximized to nearly the size of opening of a stand and the output of sound magnitude for a speaker is enhanced. A foam washer substitutes the function of flexible movement for an end fixture of the invention of prior art to achieve normal sound output of a speaker.
The followings are brief description for optimal embodiments of the invention for committee's better understanding in the structural assembly and operations of the invention.
REFERENCES:
patent: 3855428 (1974-12-01), Itagaki
patent: 3862376 (1975-01-01), White
patent: 4234766 (1980-11-01), Cacho
patent: 4275278 (1981-06-01), Sakurai et al.
patent: 4440259 (1984-04-01), Strohbeen
patent: 5072806 (1991-12-01), Odajima
patent: 5099949 (1992-03-01), Mitobe
patent: 5162619 (1992-11-01), Thiele et al.
patent: 5903658 (1999-05-01), Okazaki et al.
Dougherty & Troxell
Lockett Kim
Nappi Robert E.
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