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JPS513616

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DESCRIPTION JPS513616
1. Title of invention 2, Inventor same as applicant 6. Patent applicant: ■ Japan Patent Office 0
JP-A-51-36160 Published Japanese Patent Application 51. (1976)1. □ 3 ■ Longawaited request 4 '? -'7'; PI (77 internal reference number g + 6555 specification □ 1, title of the
invention] 1, title of the invention] loudspeaker cabinet
Force Kisei Loudspeaker Cabinet
6, [Detailed description of the invention]. The present invention (CJ, $ 5 cabinet) relates mainly to
a cabinet provided with a pair of new specially designed sound reflectors corresponding to a pair
of loudspeakers. It has now been recognized that it is desirable to have the sound reflector
cooperate with the loudspeaker of the stereo device. However, the cabinets used for this purpose
are not particularly adapted to accommodate a pair of loudspeakers in which each loudspeaker is
operatively associated with a sound reflector. Furthermore, the technology of the public EndPage:
1 is considered to be significantly lacking in sound reflectors specifically adapted to make a
loudspeaker cooperate closely. It is as follows when the point of the above-mentioned is taken
into consideration and the object of the present invention is raised. 1. A frame fitted with a
spherical receptacle for holding two loudspeakers inside, with a sound reflector attached to each
of the loudspeakers which cooperates closely with the loudspeaker for each loudspeaker Provide
a loudspeaker cabinet. 2. Providing a loudspeaker cabinet of the above type wherein the
loudspeakers open on the outer surface of the spherical receptacle. 3. Providing a fiberglass
sound projector having a concave reflecting surface consisting of two annular concaves that meet
at a vertex line in a loudspeaker cabinet having the above features. -4: 1: The internal concave
reflective surface obtained by rotating the arc 6600 so that the end of the circular arc is the pivot
point in the loudspeaker cabinet described above, and the external concave obtained by moving
the other q arc 360 ° Providing a sound reflector comprising an annular surface. 5. To provide a
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sound reflector including a circumferential flange for mounting on a frame in the above
loudspeaker cabinet. Some of the various other more detailed objects and advantages of the
present invention arising in connection with carrying out the above teachings in one embodiment
are in part (d being apparent, and in part, a description of the present invention). I'm going to go
back later. The above-mentioned eye 11 comprises a loudspeaker comprising four vertical legs,
the vertical legs being connected to the four horizontal beams at a position above their lower
ends, one pair of legs being longer than the other pair of legs Achieved by providing a cabinet. A
pair of A-frames connects the upper ends of the long legs to the upper ends of the short legs.
Thus, each A frame has a short side and a long side. The upper cross beam connects the upper
ends of the long legs, and the second cross beam connects the upper ends of the short legs. Each
A-frame has a weir extending between the short end and the long end spaced from the end of the
◎ plastic spherical receptacle fixed on both sides of the A-frame Attached to the frame.
A weir connects the top of the A frame, and the 'beam connects the top of the short leg near the
top of the long leg i. The receptacle holds a pair of loudspeakers in angularly spaced relationship.
One of these loudspeakers has a point which opens downward at the bottom of the receptacle,
the other loudspeaker is the space formed by the long side of the A-frame and the beams
connecting the apexes and the upper ends of the short legs and Is in the opposite position ′ ′.
Another lower beam extends between the two lower beams in parallel relation to the two upper
beams. The sound reflector comprises a flange fixed to this last so-called intermediate beam and
six other lower beams. The second sound reflector is fixed at a vertex 杆 and a beam connecting
both sides of the A) 7-m and the upper end of the short leg. Each of these sound reflectors is
made of fiberglass and has an inner reflective surface formed by an inner concave cone and an
outer annular concave surface, these two surfaces being coincident at the apex. The point of the
conical part enters the loudspeaker. For a more complete understanding of the subject, please
refer to the following EndPage: 2 description, and the accompanying drawings. Referring now to
the drawings, where the same reference numerals indicate opposing elements throughout the
several drawings, and referring first to FIG. 1 in more detail, the loudspeaker cabinet of the
present invention is generally indicated at 1o as shown. Include the indicated frame. The frame
1o includes a pair of short front legs 11.12, hereinafter referred to as front legs, and a pair of
long legs 13, hereinafter referred to as rear legs. 第 Only one leg 16 is shown in FIGS. 1 and 6.
The reason is that the drawing of the other-, 0 legs is obscured by this-. Each of the legs 11.12.13
is provided at its lower end with a caster 14 so that the cabinet can be easily moved over a
supporting surface such as the floor 15. A front lower cross beam 16 extends between the legs
11.12 at spaced locations above the casters 14 and a rear lower cross beam 17 extends between
the rear legs 16. The side beams 18 extend between the legs 11 and one of the rear legs 16, and
the other side beams 19 extend between the legs 12 and the other rear leg 16. The intermediate
cross beam 20 extends between the side beams 18.19. The other A frame 22 in which the upper
end of the leg 11 and one leg 1 are connected by the A frame 21 connects the upper end of the
leg 12 and the other rear leg 16. A-frames 2L 22 are substantially identical and one of them is
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considered to be sufficient for the purpose of the present description if it is described in detail.
The A-frame 21 comprises a short side 23 and a long side 24 as shown, which meet at an apex
25.
The weir 26 extends from the lower end of the side 26 to the spaced position 27 from the lower
end of the side 24. The weir 26 is substantially parallel to the side beams 18. The so-called apex
ridges 28 extend between the apexes 25 and the upper front cross beam 29 extends between the
upper ends of the front legs 11.12, and the soil weir 60 extend between the upper ends of the
rear legs 13. It will be appreciated that the L frame structure can be made of any suitable
material, but metal plates made of tubular structures are preferred and shown as materials. The
spherical receptacle is shown at 61. This receptacle and taxi are made of plastic, and from an
actual manufacturing point of view, they make two hemispherical parts which are first assembled
and fixed together, and then the band 62 provided around it is wound. The receptacles 31 are
attached to the frame 10 by a plurality of attachment assemblies generally indicated by the
reference 36.34.65. These attachment assemblies 33.34.35 are the ones with the A frame 21
closest to it. It can be seen that it is shown connected to the element with the rear leg 13. It is
understood that there are 32 similar mounting assemblies for the A frame 22 and the other rear
legs 13 as well. Referring to FIG. 2, details of assembly 33 are shown and it is understood that
assembly 34.35 is the same. The rear legs 13 are tubular as in the front and have a one-round
rectangular cross section. A sleeve screw 36 with a sleeve 36 forming a passage between the
opposing walls of the legs 13 is inserted in this passage, this screw bolt having a screw 8 to the
spanner engagement and the elastic washer 39 with the head 38 It is inserted between the legs
13. EndPage: 3 passage 40 aligned with the three fluoro is formed in the receptacle 31. A gasket
41 is in close contact with the outer surface of the receptacle 61 around the end of one passage
40, and a reinforcing member 42 is provided on the gasket 41. The gasket 41 and the member
42 are formed with holes aligned with the passage 40. A spacer sleeve 46 is inserted between the
114113 and the receptacle 41, and washers 44 are provided at each end of the sleeve. The
sleeve 46 has a hole 45 in which a screw of a screw bolt 67 is screwed. Another threaded bolt 46
is threaded through the passage 40, the gas sealer 1411 member 42 and the washer 44 into the
bore 45 of the sleeve 43. The screw bolt 46 has a head 47 and a resilient washer 48 is inserted
between the inner end of the head and the inner surface of the receptacle 61.
It is clear that the screw bolts 37. 46 are each tightened to ensure that the receptacles 31 are
exactly and firmly positioned on the frame 10. Referring more particularly to FIG. 4, a sound
reflector is shown and indicated generally at 49. The sound reflector is made of fiber glass and is
of unitary construction but includes several parts with an internal concave reflective surface. It is
a concave cone having an inner portion 50 U apex 51 and a circumference 52. Between the apex
51 and the circumference 52, there is an annular concave reflecting surface obtained by rotating
the arc by 660 ° because one end of the arc becomes the apex 51. The outer annular reflective
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portion 56 has another inner concave reflective surface between the outer edge 54 and the inner
edge coincident with the outer periphery 52 of the inner portion 50. The point of coincidence
between the outer periphery 52 of the inner portion 50 and the outer portion 56 is referred to
herein as a vertex line. The annular surface 53 is obtained by moving 3600 arcs. A peripheral
flange 55 is connected to the outer periphery 54 of the outer portion 53, and a plurality of
angularly spaced holes 56 are formed in the flange. Each of these holes 56 is for inserting a
clamping member such as a screw or bolt tongue used to attach the reflector 49 to the frame 10
°. Thus, as shown in FIGS. 1 and 6, one of these clamping members passes through a hole 56 in
one of the side beams 18 and the other clamping member is over the middle beam 2D. 56 pass
through and further fastening members pass through holes 56 (not shown) above the side beams
19 and further fastening members pass over the projecting pieces 57 extending from the lower
back stain 17. As can be seen from FIGS. 3 and 4 which pass through a certain hole 56, the
external part 53 has the same direction as the internal part 50 extends from the apex line 52
from the apex line 52 which is the outer peripheral edge of the internal part 50, It is directed to
return in the direction of force towards the apex 51. The receptacle 31 comprises a loudspeaker
58 including a frusto-conical portion 59 which is inserted into the spaced-apart engagement of
the apex 51 of the conical member (internal portion) -50. The second loudspeaker 60 is of the
same construction and material as the reflector 49. The sound reflector 60 is attached to the
apex wedge 28, the side 24 of the A-frame 21.22 and the upper cross beam 29 by means of
fasteners fixed to the lugs passing through the holes 56 and making lugs 57K @ 'L5 . The
receptacle 61 comprises another loudspeaker 6'1 which receives the apex 51 of the sound
reflection 560. It is to be understood that EndPage: 4 is connected to an electrical or electronic
device (not shown) by suitable wiring (not shown).
Reflector 49. . The structural design of the 60 is closely related to the spherical shape of the
receptacle 61 and the loudspeaker 58.61 therein, and the sound waves are reflected from the
respective reflectors and then diverted by the receptacle 310 spherical shape to make the sound
effective. Although one particular example preferred to achieve diffusion has been described, it
should be clearly understood that the present invention is not limited to the illustrated
structures, mechanisms and devices, since the present invention may be practiced This is because
it is possible to carry out the transformation of the details of these details when doing so. A
summary of the preferred embodiment of the present invention is as follows.
4. Brief Description of the Drawings] FIG. 1 is a perspective view of a loudspeaker cabinet
embodying the present invention with a portion of a sound reflector cut away, and FIG. 2 is a
view of the area enclosed by the dashed circle 2 in FIG. Fig. 3 is an enlarged cross-sectional view
of the connection between the frame element and the spherical receptacle, Fig. 3 is a side view
partially showing the m- of the cabinet in cross section, Fig. 4 is one of the sound reflectors. 1 is
a detailed perspective view of FIG. 10-m-frame, 31-m-spherical, septum-nope 49.60-one-sound
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reflector, 50-- inner cone part, -51 = -one vertex, 52--periphery, 561- outer ring Part, 58.61-loudspeaker. Patent Assignee James R. Westland Attorney Attorney-Asa '3 Part, Agent 5 FBurialist Ikenaga Kosuke: 弥-Attorney Attorney Imai (' i ': i--EndPage: 55 , List of attached
documents (1) Letter of attorney and one translation each (2) 1 patent G under the provisions of
Article 60, paragraph 4 of the Patent Act straight 11 certificates and translations (3) one
statement (4) figure 1 side 1 6 6, other than the above agent name (6655) patent attorney ikeike
eikosu address same place office name (7112) 升 升 庄 亮--EndPage: 6
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