U.S. patent number 3,735,041 [Application Number 05/159,594] was granted by the patent office on 1973-05-22 for cabinet for electronic communications apparatus.
Invention is credited to Ryuzo Fujita.
United States Patent |
3,735,041 |
Fujita |
May 22, 1973 |
CABINET FOR ELECTRONIC COMMUNICATIONS APPARATUS
Abstract
A generally ball-shaped enclosure is formed by two complementary
separable portions having appropriately arranged cut out portions
to receive and retain between them a control panel, loudspeaker
mountings, and access plate when the portions are joined together
without the use of additional fasteners.
Inventors: |
Fujita; Ryuzo (Hongo,
Bunkyo-ku, Tokyo, JA) |
Family
ID: |
22573201 |
Appl.
No.: |
05/159,594 |
Filed: |
July 6, 1971 |
Current U.S.
Class: |
348/836;
348/E5.128; 181/153; 455/350; 181/145; 312/7.2; 455/351 |
Current CPC
Class: |
H04N
5/64 (20130101); H04R 1/02 (20130101) |
Current International
Class: |
H04N
5/64 (20060101); H04R 1/02 (20060101); H04n
005/64 () |
Field of
Search: |
;312/114,257A,283,284,352,7TV ;179/1E,1GA ;181/31B ;178/7.9
;325/352 ;D56/4 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
1,127,504 |
|
Dec 1956 |
|
FR |
|
D322,010 |
|
Oct 1970 |
|
JA |
|
1,190,226 |
|
Apr 1970 |
|
GB |
|
Primary Examiner: Griffin; Robert L.
Assistant Examiner: Orsino, Jr.; Joseph A.
Claims
I claim:
1. A spherical cabinet to completely enclose an electronic
communications equipment chassis, said cabinet being separable
about the mid-plane to define semi-spherical upper and lower
portions, a circular front panel, two side panels, and a removable
back plate, each of the circumferential margins of said upper and
lower portions being provided with three oppositely disposed
semi-circular recesses to define with the corresponding recesses of
the other portion openings to receive said front and side panels,
said semi-circular recesses being provided with arcuate grooves
within which the circumferential margins of said panels are
received, means formed integral with said panels and semi-spherical
upper and lower portions to prevent relative angular movement of
the panels in said openings, the margins of each of said upper and
lower protions being also provided with fourth oppositely disposed
recesses to define with each other a fourth opening to removably
receive said back plate, said recesses being spaced from each other
to provide intervening portions of the circumferential margins of
said upper and lower portions to abut against each other in mating
engagement, said portions in mating engagement being provided with
complementary interengaging protrusions and recesses, means to
attach said upper and lower portions to an equipment chassis
contained within the cabinet to retain said panels in their
respective positions, said fourth recess in the semi-spherical
portions including a pair of spaced integral protrusions to
position one edge of the back plate in the fourth opening, said
plate including a pair of integral spaced protrusions also coacting
with said protrusions in the fourth recess to permit the plate to
be removed when the cabinet is assembled.
2. The cabinet as defined in claim 1, wherein the outer surfaces of
said side panels and the back plate are defined by sections of a
sphere, the entire enclosure thereby having a generally ball-shaped
configuration with a generally flat segmental area defined by the
front panel.
3. The cabinet as defined in claim 2, wherein said enclosure also
includes fastener means to secure the upper and lower portions
together and retractable handle means to carry the enclosure.
4. The cabinet as defined in claim 3, wherein said base includes
resilient suction pad means to attach the base to a flat surface,
and pivot means to rotate the enclosure about a vertical axis with
respect to the base.
5. The cabinet as defined in claim 4, wherein said back plate
includes latching means to removably secure the back plate in the
opening defined by the upper and lower portions when secured
together.
6. The cabinet as defined in claim 5, wherein said enclosure
includes support means to mount electronic communications apparatus
within the enclosure, said apparatus being of the type including
power supply connector wiring, loudspeaker means and manual control
means, said side panels including means to mount loudspeaker means
on the interior thereof, said front panel being provided with
openings for said manual control means, and said connector wiring
being accessible through said back panel opening.
7. The cabinet as defined in claim 6, wherein said electronic
apparatus includes magnetic tape reproducing apparatus, and said
front panel is provided with a slotted opening to permit a tape
cartridge to be inserted into said reproducing apparatus.
8. The cabinet as defined in claim 6, wherein said electronic
apparatus includes means for electronically reproducing visual
signals including a television screen, and said front panel is
provided with an opening for viewing said screen.
Description
The present invention relates to electronic communication devices
and, more particularly, to a cabinet for a radio receiver, tape
player, television set or other similar devices.
One object of the invention is to provide a cabinet which can be
economically manufactured and assembled and which is attractive in
appearance.
This object can be realized, according to the invention, by means
of a cabinet formed by two generally semispherical portions which
engage with each other and define together respective openings to
receive and retain a front panel carrying a dial plate, two side
panels carrying the loudspeakers of the system, and a back plate
giving access to the power section of the device.
Further objects and features of the present invention will be best
understood and appreciated from the following description of the
invention, selected for purposes of illustration and shown in the
accompanying drawings, in which:
FIG. 1 is a side elevational view of a cabinet embodying the
invention, in combination with a combined radio receiver and tape
cartridge player;
FIG. 2 is a front elevational view of the cabinet of FIG. 1;
FIG. 3 is a back elevational view of the cabinet of FIG. 1;
FIG. 4 is a perspective exploded view of the cabinet according to
the invention, the inner components being removed for purposes of
simplification;
FIG. 5 is a sectional view taken along line 5--5 of FIG. 3;
FIG. 6 is a fragmentary sectional view taken along line 6--6 of
FIG. 2;
FIG. 7 is a fragmentary sectional view taken along line 7--7 of
FIG. 1; and
FIG. 8 is a front elevational view of another embodiment of the
cabinet of the invention, in combination with a television
receiver.
Referring now in greater detail to the drawings, a cabinet for a
combined stereophonic radio receiver and tape cartridge player is
shown in FIGS. 1-5 and is indicated by numeral 10. Basically, this
cabinet comprises a lower generally semispherical portion 12 and an
upper generally semispherical portion 14 which engages with the
lower portion 12, defining an essentially ball-shaped enclosure
within which conventional radio receiver means, tape cartridge
player means and stereophonic or two-channel amplifier means are
housed. All of these electronic components are selected from
commercially available products and accordingly do not, in an
individual sense, form a part of the present invention.
The two semispherical portions 12 and 14, made for example of rigid
plastic material, define together a front opening 16, two side
openings 18 and 20, and a back opening 22. Preferably, the openings
16, 18 and 20 are circular and the opening 22 is substantially
rectangular. In addition, it is convenient that approximately half
of each one of these openings is defined by one of the portions 12
and 14, to facilitate the insertion of the corresponding panels.
Thus, each one of the substantially semispherical portions 12 and
14 is provided with four contacting margins 24 and 26,
respectively, the contacting margins of one portion being
complementary to the contacting margins of the other portion. In
the assembled condition of the cabinet these contacting margins
lie, according to a preferred embodiment, in a common plane 28
which is inclined, approximately at an angle of 30.degree., with
respect to the supporting surface.
In order to provide an accurate mating and a secure engagement
between the portions 12 and 14, the contacting margins 24 of the
lower semispherical portion 12 may be provided with protrusions 32
and the contacting margins 26 of the upper semispherical portion 14
may be provided with recesses 34 which are complementary to the
protrusions 32. It will be apparent that, without departing from
the scope of the invention, the protrusions can also be located on
the margins 26, and the recesses located on the margins 24, and
also that the margins 24 and 26 can each be provided with both
protrusions and recesses.
The circular front opening 16 lies in a plane normal to the plane
28, thus being inclined with respect to the supporting surface at
an angle of approximately 60.degree., for the purpose of receiving
and retaining a circular front panel 36, having substantially the
same diameter as the front opening 16. In order to fixedly hold the
front panel 36, a circular rim 38 (see FIG. 6) is provided along
the margin of the front panel 36, which has a cylindrical portion
of larger diameter than the diameter of the front opening 16 and a
tapered portion which engages with the inner surfaces of the
semispherical portions 12 and 14, in the vicinity of the edge of
the front opening 16. This tapered portion merges into a second
cylindrical portion having the same diameter as the front opening
16, surrounding the front panel 36 and protruding from the front
opening 16. On the other side, the portions 12 and 14 are each
provided with a semicircular rim 40 and 42, respectively, defining
grooves 44 and 46, respectively, along the edge of the front
opening 16. The rim 38 of the front panel extends within said
grooves 44 and 46 and abuts the rims 40 and 42, so that axial
displacement of the front panel 36 is prevented. In order to also
prevent angular displacement of this panel, the rim 38 is provided
with two protrusions 48 which engage with corresponding recesses 50
defined by the rims 40 and 42.
The circular side openings 18 and 20 essentially lie in spaced
parallel panels normal to the plane 28 for the purpose of receiving
and retaining the circular side panels 52 and 54, having
substantially the same diameter as the side openings 18 and 20.
Only panel 52 will be described in more detail, since panel 54 is
analogous thereto. In order to fixedly hold the side panel 52 in
the side opening 18, a circular rim 56, shown in FIG. 7, is
provided along the margin of the side panel 52, stepped with
respect to the outer surface of the panel and tapered in order to
engage with the inner surfaces of the semispherical portions 12 and
14, in the vicinity of the edge of the side opening 18. The
portions 12 and 14 are each provided with a semicircular rim 58 and
60, respectively, defining a groove 62 and 64, respectively, along
the edge of the side opening 18. The rim 56 of the side panel
extends within said grooves 62 and 64 and abuts the rims 58 and 60,
so that axial displacement of the side panel 52 is prevented. In
order to prevent angular displacement of this panel, the rim 56 is
provided with two recesses 66 which are engaged by corresponding
protrusions 68 located in the grooves 62 and 64. According to a
preferred feature of the invention, the side panels 52 and 54 are
provided with spherical outer surfaces having the same radius as
the upper and lower portions of the enclosure, thus contributing to
define a generally ball-shaped cabinet.
The substantially rectangular back opening 22 is provided at the
opposite side from the front opening 16, and has the purpose of
receiving and retaining a back plate 70 having essentially the same
shape as the back opening 22. Plate 70 must be susceptible of being
removed while the two semispherical portions 12 and 14 are secured
to each other, in order to give access to the power supply of the
device, for example the battery-enclosure 72. Therefore, the plate
70 is hingedly mounted on portion 12 by means of two protrusions 74
extending from the lower edge of plate 70 and beyond the edge of
opening 22, engaging with the inner surface of portion 12, and a
plurality of protrusions 76 extend from the edge of opening 22 and
engage with the inner surface of back plate 70, thus acting as
stops for the plate. A latching means 78 is mounted near the upper
edge of back plate 70 for sliding vertical movement between an
operative position engaging with the inner surface of portion 14,
to fasten the back plate 70 in its closed position, and an
inoperative position withdrawn from said engagement to release the
back plate 70. The latching means 78 comprises two rectangular
plates arranged at each side of the back plate 70, near the edge of
its upper margin, and fixedly connected to each other by means of a
rod which passes through the back plate 70 and is vertically
slidable within an elongated slot. The back plate 70 is also
provided with a spherical outer surface having the same radius as
the remainder of the enclosure and matching the outer surfaces of
those portions.
It will be apparent that, without departing from the scope of the
invention, other arrangements can be provided to hold the different
panels and back plate in their respective openings, particularly
without the need for screws or other securing elements. For
example, the front panel, the side panels and the back plate may be
provided with circular recesses along their margins, which are
engaged by protrusions extending from the semispherical portions 12
and 14.
The electronic communication components of a combined radio
receiver and tape cartridge player are arranged within a
self-supporting support chassis 80, which includes a receptacle 82
for the introduction of a cartridge and the battery enclosure 72.
Preferably, the chassis 80 is fixedly secured to the front panel 36
which basically comprises a radio tuning dial 84, amplifier
controls 86, operation selector knob 88, radio tuning knob 90,
power switch 92, track selector 94 and a hinged door 96 covering
the tape cartridge receptacle 82. In the inside of the cabinet the
chassis 80 rests on correspondingly shaped support ribs 98 and 100
(FIG. 5) of the lower semispherical portion 12, and is secured
thereto by means of four screws 102. On the other side, the upper
semispherical portion 14 is secured to the chassis 80 by means of
two screws 104. Thus, the whole cabinet is firmly held together by
means of screws 102 and 104, since the two semispherical portions
12 and 14 are secured to chassis 80 to hold the front panel 36,
side panels 52 and 54, and the back plate 70 by means of the
respective interengaging elements.
According to a preferred feature of the invention, the cabinet 10
is mounted on a base 106 which comprises suction means to secure
the cabinet to a flat surface and pivot means for rotating the
cabinet 10 with respect thereto. More particularly, the base 106
comprises an element 108 consisting of a substantially cylindrical
element topped by a conical portion and provided with a central
bore 110. The bottom of the portion 12 is provided with a conical
surface which conforms to the conical surface of the base, and a
bore 112, centrally aligned with bore 110, is provided at the
center of the cone of portion 12, and a threaded rod 114 passes
through the bores to be secured against axial displacement by means
of a stop plate 116 abutting element 108, and a washer 118 and nut
120 located on the inside of the cabinet 10. The conical surface of
portion 12 can freely slide over the matching conical surface of
element 108. To enhance the sliding properties, a disk of fabric,
for example of plush, or other suitable material (not shown) can be
inserted between the two conical surfaces. The axle 114 extends
downwardly beyond the stop plate 116 and is provided with a second
plate 122 which is secured to a disk 124 of resilient material,
such as rubber. The diameter of disk 124 is the same as that of
element 108, so that the edge of element 108 rests on disk 124. In
addition, disk 124 is provided with an ear 126. When the cabinet is
to be moved or lifted from its support surface, ear 126 has only to
be slightly lifted to allow air to penetrate under disk 124, and
the cabinet can easily be lifted. However, if the cabinet is only
tilted or pushed, the force will be translated into a pulling force
on rod 114, while the edge of disk 124 remains applied to the
support surface. Consequently, the disk 124 will behave like a
suction cup to hold the cabinet on the supporting surface.
The two side panels 52 and 54 each hold a loudspeaker (not shown)
connected to a respective channel of the stereophonic sound
reproducing device arranged within cabinet 10, and are provided
with perforations 128 to allow the sound to be projected outwardly.
Since the loudspeakers are arranged as far as possible from each
other on the cabinet surface, and the ball-shaped cabinet defines
an acoustically resonant housing, high fidelity and high efficiency
stereophonic characteristics can be obtained with the system. If
the cabinet of the invention is to be used in a relatively fixed
installation, additional loudspeakers can be connected to the
output-jacks 130 located on each side panel 52 and 54.
The upper portion 14 of cabinet 10 is also provided with a bore 132
through which a telescopic antenna means 134 may be pulled out.
Also, at the uppermost portion of the cabinet 10, a ring means 136
is fixedly secured to the portion 14 to permit the cabinet to be
suspended, for example, by a wire. Adjacently to this ring means
136, the upper portion 14 is provided with a recess to receive a
retractable handle means 138 which in its hidden position covers
the screws 104 and defines an upper surface matching with the
periphery of the ball-shaped cabinet 10.
As mentioned before, the power supply of the chassis can be reached
by withdrawing the back plate 70. Thus, the battery enclosure 72
slides out of the chassis 80 so that the batteries can easily be
replaced. In addition, a power supply line cord for power supplied
by an external source, such as a wall socket or a car battery, can
also be provided near the back opening 22.
FIG. 8 shows another embodiment of the cabinet, indicated by
numeral 140, of the invention, for use with a television chassis.
The features of this cabinet 140 are identical to the ones of
cabinet 10, excepting that the lower semispherical portion 142 and
the upper semispherical portion 144 define a substantially
rectangular front opening into which a correspondingly shaped front
panel 146 is inserted. This panel 146 carries the television screen
and the control knobs 148. The remaining parts, being identical to
the preceding embodiment, are indicated by the same numerals.
From above, it is evident that the cabinet of the invention, in
combination with a stereophonic sound reproducing device, can be
used for many purposes. It combines the advantages of a portable
device with optimal acoustic properties. In addition, the
ball-shaped form and the pivotal mounting of the cabinet provides
an attractive appearance suitable in any location, indoors or out.
A further advantage resides in the fact that the cabinet may be
manufactured completely independently from the interior chassis
including the front panel, and that only a few screws are necessary
to assemble both parts together.
It will be apparent that the described embodiments are for the
purpose of illustrating the invention, and that changes and
variations may be made by those skilled in the art without
departing from the scope of the invention which is defined in the
appended claim.
* * * * *