Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2002-07-15
2004-03-02
Tran, Sinh (Department: 2643)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C181S171000, C029S594000
Reexamination Certificate
active
06700988
ABSTRACT:
BACKGROUND OF THE PRESENT INVENTION
1. Field of Invention
The present inventions relates to a speaker, and more particularly to a speaker spider with integral lead wire arrangement that provides enhanced durability, higher sound quality and improved safety for a speaker with a minimum cost and manufacturing steps.
2. Description of Related Arts
Conventional speaker always has problems of instability and imperfect sound quality. These two major problems are inherent from the structural limitation of the conventional speaker.
Referring to
FIG. 1
of the drawings, a conventional speaker
9
comprises a speaker frame
90
, a cone
91
, a speaker spider
92
and a voice coil
93
. The cone
91
, which is supported by the speaker frame
90
in an axially movable manner, has a connection opening
911
provided at a base portion
912
thereof and at least a pair through holes
913
provided at a predetermined position of the cone
91
. The speaker spider
92
is co-axially connected to the base portion
912
of the cone
91
. The voice coil
93
connected to the speaker spider
92
generally comprises two pairs of voice coil wires
931
extended towards the cone
91
by penetrating the through holes
913
of the cone
91
respectively. The speaker
9
also generally comprises two pairs of lead wires
94
, each having a first and a second end, are adapted for connecting the voice coil
93
with an speaker terminal
95
, wherein each of the first ends of the lead wires
94
penetrates the through holes
913
of the cone
91
and connects to the respective voice coil wire
931
of the voice coil
93
at the base portion
912
of the cone
91
. Each of the second ends of the lead wires
94
is adapted for connecting to the speaker terminal
95
behind the cone
91
. Therefore, lead wires
94
are suspending behind the cone
91
and several problems are induced from the wires connection between the voice coil
93
and the speaker terminal
95
.
During the vibration of the cone
91
of the speaker, the lead wires
94
may overlap or touch with each other that may cause short circuit. It not only greatly degrades the quality of the speaker but also poses a risk of causing fire that adversely affects the utility safety of the speaker.
On the other hand, there will be relative pulling and pushing forces applied to the lead wires
94
, stretching force occurred between the lead wires
94
and the cone
91
, and relative pulling force formed between the lead wires
94
and the voice coil
93
. Thus, the chance of losing or insecure contact between the lead wires
94
and other parts of the speaker is relatively great that may lead to sound instability. Or, in the worst case, the conventional speaker may be electrically disconnected when the connection between the wires breaks.
Since through holes
913
are necessarily provided on the cone
91
for the connection of wires, the cone surface is defected that generally lowers sound quality.
Furthermore, since the lead wires
94
are suspending behind the cone
91
, there is relative force formed between the lead wires
94
and the speaker spider
92
such that the lead wires
94
greatly hinders the smooth vibration of the speaker spider
92
and adversely affects the sound quality.
SUMMARY OF THE PRESENT INVENTION
The main object of the present invention is to provide a speaker spider with integral lead wire arrangement which provides enhanced durability, higher sound quality and improved safety for a speaker.
Another object of the present invention is to provide a speaker spider with integral lead wire arrangement which enables a speaker to be manufactured by fewer steps in a lower cost while achieving a higher quality in comparison with the conventional speaker structure.
Another object of the present invention is to provide a speaker spider with integral lead wire arrangement, wherein the relative pulling and pushing force applied to the lead wires, the stretching force occurred between the lead wires and the cone, and/or the relative pulling force formed between the lead wires and the voice coil during vibration are eliminated.
Another object of the present invention is to provide a speaker spider with integral lead wire arrangement such that no suspending wire is required for connection to the voice coil and hence any possible unwanted contact or overlapping of the voice coil wires and the lead wires is eliminated.
Another object of the present invention is to provide a speaker spider with integral lead wire arrangement, wherein the cone surface is complete and no hole is required on the cone surface for connecting the voice coil wires of the vice coil and the lead wires to an speaker terminal.
Another object of the present invention is to provide a speaker spider with integral lead wire arrangement, wherein no relative movement between the speaker spider and the lead wires and the smooth vibration of the speaker spider will not be affected by any suspending lead wires behind the cone.
In order to accomplish the above objects, the present invention provides a speaker spider arrangement which comprises:
a speaker spider which has a central opening defining an inner rim for mounting on a voice coil of a speaker, a periphery outer rim for affixing to a speaker frame of the speaker, and a spring effect portion provided at a portion located between the inner rim and the outer rim to enable the inner rim to be moved axially up and down with respect to the outer rim when a driving force is applied to the inner rim and be retained to an original position after the driving force is released; and
an integral lead wire arrangement which comprises:
at least a pair of lead wires each having a length longer than a distance between the inner rim and the outer rim of the speaker spider, wherein each of the lead wires has an inner end portion, an outer end portion and an attachment portion extended between the inner and the outer end portions, wherein the two attachment portions of the two lead wires are spacedly extended from the inner rim to the outer rim of speaker spider while the inner end portion and the outer end portion of each of the lead wires are outwardly extended from the inner rim and the outer rim of the speaker spider respectively for connection to voice coil wire of the voice coil and an speaker spider terminal of the speaker respectively, and
means for attaching the attachment portions of the lead wires on one side surface of the speaker spider so as to ensure the attachment portions of the lead wires being spacedly extended between the inner rim and the outer rim of the speaker spider and to integrate with the speaker spider to move simultaneously.
REFERENCES:
patent: 6332262 (2001-12-01), Sakamoto
Chan Raymond Y.
David and Raymond Patent Group
Tran Sinh
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