U.S. patent application number 11/480920 was filed with the patent office on 2008-01-10 for sandwich speaker cabinet.
This patent application is currently assigned to La Rouge International Co., Ltd.. Invention is credited to Chi En Huang.
Application Number | 20080006477 11/480920 |
Document ID | / |
Family ID | 38918170 |
Filed Date | 2008-01-10 |
United States Patent
Application |
20080006477 |
Kind Code |
A1 |
Huang; Chi En |
January 10, 2008 |
Sandwich speaker cabinet
Abstract
A sandwich speaker cabinet, which has an outer cabinet, an inner
cabinet mounted inside the outer cabinet, and a flexible
shock-absorbing filler layer sandwiched in between the outer
cabinet and the inner cabinet to join the outer cabinet and the
inner cabinet and to absorb shocks during operation of the speaker
system so as to reduce distortion and vibrating noise created by
the resonance of the speaker system. The ultimate purpose of this
sandwich speaker cabinet is to reduce the distortion and vibrating
noise created by the resonance of the cabinet when the speaker
drivers are doing piston motion.
Inventors: |
Huang; Chi En; (Taoyuan
City, TW) |
Correspondence
Address: |
TROXELL LAW OFFICE PLLC
SUITE 1404, 5205 LEESBURG PIKE
FALLS CHURCH
VA
22041
US
|
Assignee: |
La Rouge International Co.,
Ltd.
|
Family ID: |
38918170 |
Appl. No.: |
11/480920 |
Filed: |
July 6, 2006 |
Current U.S.
Class: |
181/199 |
Current CPC
Class: |
H04R 1/2888 20130101;
H04R 1/288 20130101 |
Class at
Publication: |
181/199 |
International
Class: |
A47B 81/06 20060101
A47B081/06 |
Claims
1. A sandwich speaker cabinet comprising: an outer cabinet, said
outer cabinet being made of a hard material and having an opening
at a front side thereof; an inner cabinet received inside said
outer cabinet, said inner cabinet being made of a hard material and
having an opening at a front side thereof corresponding to the
opening of said outer cabinet; and a flexible intermediate
shock-absorbing filler layer filled in said outer cabinet around
said inner cabinet to join said outer cabinet and said inner
cabinet and to absorb shocks, thereby reducing the distortion and
vibrating noise created by the resonance of the cabinet when the
speaker drivers are doing piston motion.
2. The sandwich speaker cabinet as claimed in claim 1, wherein said
inner cabinet has reinforcing ribs provided at an inside wall
thereof to reinforce the structural strength of said inner
cabinet.
3. The sandwich speaker cabinet as claimed in claim 1, wherein said
outer cabinet and said inner cabinet are made of one of the
materials including hard plastics, wood and metal.
4. The sandwich speaker cabinet as claimed in claim 1, wherein said
flexible intermediate shock-absorbing filler layer is made out of
one of the materials including rubber, silicon rubber, polyvinyl
chloride foam and polyurethane form.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates speaker cabinets and more
particularly, to a sandwich speaker cabinet, which effectively
absorbs shocks during operation of the speaker system, thereby
reducing the distortion and vibrating noise created by the
resonance of the cabinet when the speaker drivers are doing piston
motion.
[0003] 2. Description of the Related Art
[0004] Following the improvement of people's living standard,
stereo system has become one of the requisite electric appliances
in every family. Music may be used as a human activity for artistic
or aesthetic, entertainment, or ceremonial purposes. Innovative
music related products have been continuously created following the
progress of the time. For example, Taiwan Utility Model No. 568485,
entitled "Combination speaker cabinet having fixed buffer means" is
one of the typical exemplars.
[0005] Early speaker cabinets are commonly made of wood. A wooden
speaker cabinet is heavy and easy to be moistened. The angled
contours of conventional wooden speaker cabinets are monotonous and
do not show a streamline sense of beauty. Currently, polymer
compounds are intensively used for molding speaker cabinets for the
advantages of light and waterproof characteristics. Further,
polymer compound materials can be molded into any of a variety of
shapes. However, due to the limitation of wall thickness, size and
shape, it is difficult to accurately control the quality when
molding a speaker cabinet with polymer compounds. Uneven wall
thickness or local deformation of the cabinet wall may result in a
defective product, affecting the sense of beauty and structural
strength.
[0006] FIG. 1 shows a prior art speaker cabinet designed to
eliminate the aforesaid drawbacks. This design of speaker cabinet
has the speaker wall formed of two layers, i.e., the speaker
cabinet is formed of an outer cabinet wall and an inner cabinet
wall adhered to the inner surface of the outer cabinet wall.
According to this design, the outer diameter of the inner cabinet
wall must fit the inner diameter of the outer cabinet wall so that
both the outer cabinet wall and the inner cabinet wall can be
tightly secured together. This design of speaker cabinet is not
strong. When the outer cabinet wall and the inner cabinet wall are
fastened together, gaps may be left in between the inner surface of
the outer cabinet wall and the outer surface of the inner cabinet
wall. During voice output of the speaker system, a resonant noise
will be produced, affecting the output quality of the speaker
system.
[0007] Therefore, it is desirable to provide a speaker cabinet that
eliminates the aforesaid drawbacks.
SUMMARY OF THE INVENTION
[0008] The present invention has been accomplished under the
circumstances in view. It is the main object of the present
invention to provide a sandwich speaker cabinet, which has a high
structural strength. It is another object of the present invention
to provide a sandwich speaker cabinet, which effectively absorbs
shocks during operation of the speaker system, thereby reducing the
distortion and vibrating noise created by the resonance of the
cabinet when the speaker drivers are doing piston motion.
[0009] To achieve these and other objects of the present invention,
the sandwich speaker cabinet comprises an outer cabinet, an inner
cabinet, and a flexible intermediate shock-absorbing filler layer.
The outer cabinet is made of a hard material, having an opening at
the front side. The inner cabinet is made of a hard material and
received inside the outer cabinet, having an opening at the front
side corresponding to the opening of the outer cabinet. The
flexible intermediate shock-absorbing filler layer is filled in the
outer cabinet around the inner cabinet to join the outer cabinet
and the inner cabinet. During operation of the speaker system, the
flexible intermediate shock-absorbing filler layer absorbs shocks,
thereby reducing the distortion and vibrating noise created by the
resonance of the cabinet when the speaker drivers are doing piston
motion.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a schematic plain view showing an application
example of a speaker cabinet according to the prior art.
[0011] FIG. 2 is an exploded view of a part of a sandwich speaker
cabinet according to the present invention.
[0012] FIG. 3 is an elevational view of the sandwich speaker
cabinet according to the present invention.
[0013] FIG. 4 is a sectional view in an enlarged scale of a part of
the sandwich speaker cabinet according to the present
invention.
[0014] FIG. 5 is a schematic plain view showing an application
example of the sandwich speaker cabinet according to the present
invention.
[0015] FIG. 6 is an oblique elevation of an alternate form of the
sandwich speaker cabinet according to the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0016] Referring to FIGS. 2.about.6, a sandwich speaker cabinet in
accordance with the present invention is shown comprised of outer
cabinet 1, an inner cabinet 2, and an intermediate shock-absorbing
filler layer 3.
[0017] The outer cabinet 1 is a cabinet of hard material, having an
opening 11 at one side.
[0018] The inner cabinet 2 is a hard material cabinet of relatively
smaller size receivable in the outer cabinet 1, having an opening
21 at one side corresponding to the opening 11 of the outer cabinet
1.
[0019] The intermediate shock-absorbing filler layer 3 is a
flexible bonding material sandwiched in between the inside wall of
the outer cabinet 1 and the outside wall of the inner cabinet 2 to
seal the gap and to join the outer cabinet 1 and the inner cabinet
2. The intermediate shock-absorbing filler layer 3 absorbs shocks
during operation of the speaker system, thereby reducing the
distortion and vibrating noise created by the resonance of the
cabinet when the speaker drivers are doing piston motion.
[0020] During fabrication of the speaker cabinet, the relatively
smaller inner cabinet 2 is inserted through the opening 11 into the
inside of the relatively greater outer cabinet 1 and kept spaced
from the inside wall of the outer cabinet 1, and then the flexible
filler material of the intermediate shock-absorbing filler layer 3
is filled in the gap between the inside wall of the outer cabinet 1
and the outside wall of the inner cabinet 2 to join the outer
cabinet 1 and the inner cabinet 2. The arrangement of the outer
cabinet 1, the inner cabinet 2 and the intermediate shock-absorbing
filler layer 3 greatly increases the wall thickness of the speaker
cabinet and enhances the structural strength of the speaker
cabinet, and effectively absorbs shocks during operation of the
speaker system, thereby reducing the distortion and vibrating noise
created by the resonance of the cabinet when the speaker drivers
are doing piston motion.
[0021] Referring to FIG. 6, reinforcing ribs 22 may be provided at
the inside wall of the inner cabinet 2 to reinforce the structural
strength of the inner cabinet 2.
[0022] Further, the outer cabinet 1 and the inner cabinet 2 can be
molded from hard plastics, or made out of wood, metal, or any of a
variety of suitable hard materials. The intermediate
shock-absorbing filler layer 3 can be formed of rubber, silicon
rubber, PVC (Polyvinyl chloride), PU (Polyurethane), etc.
[0023] A prototype of sandwich speaker cabinet has been constructed
with the features of FIGS. 2.about.6. The sandwich speaker cabinet
functions smoothly to provide all of the features discussed
earlier.
[0024] Although particular embodiments of the invention have been
described in detail for purposes of illustration, various
modifications and enhancements may be made without departing from
the spirit and scope of the invention. Accordingly, the invention
is not to be limited except as by the appended claims.
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