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DESCRIPTION JPS5240123

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DESCRIPTION JPS5240123
Patent application (? ? ? 1 1 ?? 1), title of the invention speaker device 3, inventor's
specification (1977) 3.28 ? Japanese Patent Application No. jt /-/ / j /] / [phase] Application
date ? /, (197 me) 7.22 agency internal reference number 7j, / 6 ttrs' knee) 7 ++ &?
lqiMrmekNF nail, -r / + 4 ? 1 ^ zl +), title of the invention] 1, title of the invention] speaker
device
2, number 2 of the invention described in the claims
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loudspeaker
device, and more particularly to a device comprising a known cone-shaped loudspeaker and a
novel shape and loudspeaker enclosure of Fftm. Furthermore, the invention also provides a
reflector surrounding the loudspeaker enclosure for the purpose described below. In some prior
art loudspeaker systems, the loudspeaker is placed on a baffle with a loudspeaker opening, such
a bubble being placed in a relatively large cabinet that has a significant volume M behind the
loudspeaker. In other known speaker devices vC, the volume is relatively small, but the speaker is
installed in an open chamber), so that the speakers are not only at the front of the central
removal speaker cone but also at the rear Is also exposed. Generally, in the more conventional
types of loudspeakers, the cabinet is generally rectangular in shape and is comprised of a
comparison tramline or thick baffle and a wallboard, the cabinet or enclosure rejects significant
vibration m It is considered to have a sufficient thickness and lIt quantity t. The loudspeaker
system of the present invention is clearly distinguished from the various prior art loudspeaker
systems ? n-4 by several heavy t $ j features. That is, in a loudspeaker device constructed
according to the invention, not only has a chamber with a relatively small total volume, but also
has a front compartment and a portal diaphragm in communication with one another. A speaker
is installed, the front compartment shoulders a panel with an opening that the speaker is
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exposed, and a large volume compared to the rear compartment, and the rear compartment
communicates with the front compartment and A thin but wide one (which is preferably formed
by a tailf) which projects rearwards from here (in addition, the loudspeaker device according to
the invention is a relatively thin sheet material, for example meeting thickness 8y (3 A inches) An
enclosure formed of a plate, the loudspeaker enclosure being substantially imperforate except for
the opening through which the loudspeaker is exposed. In the use of this type of loudspeaker
enclosure, the electronics itself is particularly responsible for the generation of sound,
particularly at the lower frequency of 1 ░ -5 ░ of the audio spectrum. Furthermore, by using the
anterior compartment with a large volume compared to the volume of the posterior
compartment, and by forming a wide, thin I-shaped posterior compartment, resonance points are
avoided, The result is a substantially even back generation throughout the range in which the
loudspeaker works effectively.
The present invention is also directed to a speaker apparatus of the type in which the wall of the
speaker enclosure is involved in the generation of sound, in particular, the object of trying to
further increase the operation of the speaker apparatus provided with the speaker enclosure as
described above. I will do it. More particularly, the present invention contemplates providing fIRk
generated by excitation and vibration of the wall of the speaker enclosure formed of thin walls to
increase the propagation effect and direction of propagation of fc ?. ? -6-EndPage: 2 This is
achieved in accordance with the present invention by using a reservoir for the loudspeaker
enclosure or a closed hood or horn. The reflector has an opening at its front that receives the
speaker enclosure, and preferably is sized relative to the speaker enclosure to form a forwardly
open passage on all sides of the speaker enclosure It will be determined. This reflector directs the
plaster generated by the wall of the loudspeaker enclosure forward and thus to the listening area
of the construction. Furthermore, the overall shape of the loudspeaker enclosure provided by the
present invention is not only indoors and outdoors. Speakers are suitable for use at various
locations and locations, including in cars. The above objects and advantages will become more
apparent from the embodiment of the present invention which will now be described with
reference to the inset orientation t-. First of all, referring to the specific example shown in FIG. 1
and FIG. , 8-8 and 9, which define the IJIII portion of the generally rectangular front
compartment in which the front wall 10 is installed. Is the front wall lO a side wall? , 8-8.9 VC,
and it is rectangular or square, and M has a circular opening that works with the speaker 11 and
the VIA shown schematically in FIG. The lateral a-walls 8-8 have the same shape, each having a
rear extension 12 defining one of the walls of the rear compartment of the speaker enclosure.
The bottom wall 9 consists of a rectangular wall element, the front part of which defines the
bottom of the front compartment and the rear part of which defines the paper of the rear
compartment. Also, the upward direction of the rear compartment is defined by the wall element
18. Slope t ? 14 is the wall of the front compartment? And the upper wall 1-8-18 of the rear
compartment, and in fact, the groove bottoms of the elements defining the interface between the
front and rear compartments. The enclosure is completed with a wall element 15 provided on the
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rear face of the rear compartment. In the front chamber of the front compartment, a suitable
screen or cloth 16 squeezes the speaker.
The arrangement R for transmitting the audible signal can be examined in any way, but in this
embodiment a plug 17 is provided in the back wall 15 as before. The above-mentioned speaker
enclosure shown in FIGS. 1 and 2 may be formed from a sheet material such as a carrier plate,
preferably at about 6 m (about 6 m (approximately)). For example, it is about 8 ? (3A inch) or
less. The walls are joined together with a suitable adhesive on their abducting edges. Preferably,
this bond is made without a wide board girder or high stiffness Hu [░ 9 'vllll stiffener]. The
shape of the speaker enclosure as described above, in particular the two interconnected
compartments which are substantially different in volume from one another can be called a wide
and thin-shaped one-tailed collar and the fc rear compartment is the front Projecting backwards
from the compartment provides an enclosure that can be excited by the pre-peaker, and thus this
enclosure is highly responsible for the generation of sound. Furthermore, this contribution to the
generation of sound is achieved without creating a sharp peak of resonance. The reason is that
the internal shape of the speaker enclosure is not a simple rectangle, but is asymmetrical in
which the large and small parts of the cross section and the at least one wall are in an arbitrarily
inclined plane with respect to the other wall. It has a shape that can be called In the loudspeaker
enclosure of FIGS. 1 and 2, the bottom wall lO-EndPage: 3 and the back extension 12 of the side
wall 8 of the front compartment, the rear compartment being in the same plane l1oFi'3 as the
front compartment. Due to the shape of the formed *, side wall and t-tail, it is a shape that is
easily manufactured and is also a shape that is advantageous for special uses, for example for use
with automatic single circles. In a vehicle, its tail can be fitted in a relatively small space, for
example under a seat, for its use meeting. Referring now to the embodiment shown in FIGS. 8 and
6, the front compartments of the illustrated loudspeakers n * are wall elements 1B-18 which
form part of one another. It is formed by the top wall 19 and the bottom wall 20. A front plate or
speaker mounting wall 21 is located near the front of the front compartment and has a centerport M shown schematically and cooperating with the next cone-shaped loudspeaker 22. The top
wall 19 and the bottom wall 20 are each illustrated as a rear extension 'il-; frL, one of which is
shown at 28. These rear extensions are the top and bottom (il-defined) of the first rear
compartment in this embodiment.
Also, the rear compartment is provided with side walls 24-24 and a rear end wall 25. In this
embodiment, the posterior compartment is in the form of a tail projecting rearward from the midportion of the anterior compartment, each of the side wall pairs 18 and 24 defining the sides of
the compartments being sloped walls 26-26. Thus, also in this embodiment, the posterior
compartment is in the form of a tail, which (with the loudspeaker positioned as shown in FIG. 8)
has a large dimension in the vertical plane and It extends rearward from the anterior
compartment in a plane. Furthermore, as shown in the figure, the rear compartment has the
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same vertical dimension as the front compartment, and the top and bottom S of the rear
compartment have a top wall 19 and a bottom 20 of the front compartment. Is defined by the
extension 28 of. This shape is similar to the example of @ 1 described above, since the common
reservoir is conveniently used to define the corresponding wall of the front compartment and the
rear P4 rich, so it can be manufactured as Kantani I have to. The embodiment of FIGS. 8 to 6 is
not limited to the cone-shaped speaker indicated at 22 but also to a complementary high
frequency speaker, for example a VC installed on the front plate or wall 21 and using the speaker
22 to turn it off. It is intended to be used with a speaker 27 such as a cone or dome,
schematically illustrated, which can be positioned approximately centrally, ie concentrically, of
the cone-shaped loudspeaker 22 by means of a bridging support 28. In order to house the
speakers 22 and 27 in the frame of the front compartment, it is desirable to insert the front plate
21 from the circumference of the speaker enclosure. Also, to support the grill or cover cloth 29?
A frame 81 can be identified to the front curved plate 21 by the spacer 81. Similar to the
embodiment of FIGS. 1 and 2, the connector plug 17 can be provided at the rear end of the
concrete y + 3 of FIGS. 8 to 6 as well. Also, as in the first embodiment, the loudspeaker
enclosures of FIGS. 8 to 6 are formed of a 7-shaped material, and the same construction and
assembly form as described for the first embodiment are used. It is considered to be applicable to
this second example. As noted above, it is preferred to form the walls of the speaker enclosure
from relatively thin sheet material, for example sheet material of about L5-8 ru (1/16 to A inch)
in thickness. For the purpose of this purpose, it is preferable to use a plate having a thickness of
about 8 m (inches), which is preferably made of wood. Also, it is contemplated to apply some
fiber material, such as low% W glass fiber mats, to the wall of the speaker enclosure inward.
This is shown at 82 in the partial view of FIG. The fiber material can be added 114 m times
within the wall, and this material is comprised of a 14-EndPage: 4 thick scum with about 6 to
121 ul (% to A inch) specific thin scum There are M interests. Is such a thin fiber layer a
reflection of the sound at the sieve frequency end of the spectrum without preventing low
frequency sound radiation from the wall of the enclosure? : Help minimize. The inventors have
found that these factors, in the release of the sputum, assist the desired involvement of the
enclosure itself. The typical dimensions of the loudspeaker enclosure and its compartments are
generally indicated by the relationship of the dimensions of the loudspeaker to the dimensions of
the enclosure as shown. Of course, according to the present invention, several different
dimensions are M-effective, but the general dimensions of the loudspeaker enclosure can be
determined from the examples as described, for example, below. Now, assuming that the
diameter of the cone-shaped speaker 22 shown in FIGS. 8 to 6 is about 2 & 4 cm (, 10 inches),
the fan 1. Preferably, the front panel 21 is approximately 80.5 cr ++ X 80.5 ctn (12 inches X 12
inches) at -15 ░. In this application v1, the depth of the front compartment behind the front
panel 21 is about 10 cm (about 4 inches), and iu ++ in the direction perpendicular to the front
wall of the apposition portion defined by the inclined walls 26-26. The added dimension is about
5 inches (about 5 inches). The tail of the enclosure in this example is about 17.8 cm (about a
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finch) (backward from the sloping walls 26-26), and the 1 v of the tail is about 8 inches. The
dimensions described above are by way of example and not to be taken into account, but since
the volume of the enclosure is relatively small, this embodiment will help to determine the proper
dimensional ratio. For smaller speaker cones, for example speakers with a diameter of about 20.8
cm (8 inches), the relatively reduced dimension is the M river, and 9't is a diameter of about 8
alpha 5 an (12 inches)- For the 1-16 cone, the relative increased size is for M. A common feature
of the two forms of speaker enclosures described so far is that the walls of the enclosures form a
communicating compartment, the front compartment is generally rectangular and the
loudspeaker arrangement is a wall or front wall The dimension in the direction parallel to is
larger than the dimension in the direction perpendicular to the front wall or the average
dimension thereof. Furthermore, in one of the two forms of the speaker enclosure, the lateral
dimension of the posterior compartment is the same as the lateral dimension of the anterior
compartment, but with the other enclosure, the lateral dimension of the posterior compartment is
anterior It is smaller than the size of ?.
Also, in the shape of these enclosures, a wide and thin posterior septum 7im (i.e., the tail) is close
to one of the side walls of the anterior compartment (as in FIGS. 1 and 2) or It protrudes round
from the middle part of the compartment (as shown in FIGS. 8 to 6) and has a round shape. Next,
specific examples shown in FIGS. 7-8 and 9-10 will be described. First of all, the loudspeakers
and loudspeaker enclosures 2 shown in these specific examples, FIGS. 8 to 'tA 6 (i-are of the
same form as those described above with reference to FIG. I would like to point out that it is
indicated by the same numbers as mentioned above. Specifics t1 of FIGS. 7-8 and 9-10. Both lU
use the reflector which accommodates the speaker enclosure conveniently. This reflector is flt as
described later. As shown in FIGS. 7 and 8, one loudspeaker enclosure of this embodiment is a
reflector formed of a domed top wall 88 and a bottom wall 84 and a pair of curved II walls 8B85. It is distributed, ie housed. The side walls 85-85 are arranged with their convex 9111 faces
located on either side of the speaker enclosure, and these side walls have a somewhat EndPage: 5
convergence like a horn, a reflection The debt of the body is closed in the room 86 of lead (51
way и V) * This reflector is the speaker enclosure so that the gap between the wall of the reflector
and the wall of the speaker enclosure is completely submerged. Preferably, it is made with
dimensions corresponding to those of. The above-mentioned gap is about 1 inch or several
inches is an M margin. In a typical embodiment incorporating a jGL (j = 10 inch cone full M
speaker and the speaker enclosure and reflectors are prorated in a similar manner to that shown
in Figure 8) The gap between the top and bottom walls is on the order of 2 inches, and the gap
on both sides is on the order of 8 inches in the area of the mouth of the reflector. It will be
appreciated that this gap changes in different areas. This is because the shape of the speaker and
the speaker enclosure changes as shown in the plan view of FIG. In the speaker enclosure, in
some arbitrary manner: l ..'- 19-j1 5 '? 11 can be positioned in the reflector by using, for example,
the spacer shown in FIG. Such spacers can be provided at desired locations in order to establish
the enclosure and reflector in the desired positional relationship.
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It will be appreciated that suitable electrical connections for supplying loudspeakers may be
provided through the rear walls 25 and 86 of the speaker enclosure and reflector, for example as
shown at 88 in FIG. As for the production of the reflector, although the thickness of the reflector
wall is thicker than the thickness of the wall of the speaker enclosure, the thickness of the
reflector wall is not limited in the case of the speaker enclosure. . Because the wall of the
reflector is considered not to be involved in the generation of the effect. On the other hand, the
reflector wall is taken into account as if it were a reflection r, somewhat like a horn. As
mentioned above, it is desirable for the reflector wall to be thickened with enoki, '(-20-black wall,
for example, to make the reflector wall thickness about 6 ? (% и inch) or more Can. Bonding of
the walls can be achieved in any desired way, for example with a sealing material such as an
epoxy or other adhesive as in the case of the walls of an enclosure. The dimensions of a typical
reflector made and crafted in the embodiment shown in FIGS. 7 and 8 will of course be
determined according to the size of the convenient speaker and speaker enclosure. By means of
the ratios shown in the drawings and the dimensions of the loudspeaker enclosure described
above, it is possible to easily determine the appropriate dimensions for the reflector. The external
surface orientation of the reflector can be finished or decorated in any desired manner. Also, note
that the 11111 wall is curved in a convex shape, but the earth wall and bottom wall are flat and +
rows. Thus, when used in typical darkness, it can be used as an end table or cabinet on top of the
reflector. The internal surface of the reflector is not highly polished. Then, to reduce the risk of
creating a resonance point at the infra-red frequency of the audible spectrum, it is preferable that
the inner table I kl be grained or matted or covered with a cloth. Referring to the embodiment flI
shown in FIGS. 9 and 10 in arrows, it is understood that the illustrated loudspeaker and
loudspeaker enclosure are the same as the loudspeaker and loudspeaker enclosure depicted in
FIGS. 7 and 8. However, in FIGS. 9 and 40, the reflector has a somewhat different shape. In this
embodiment, the 111Il walls 89-89 are not convexly curved as in the embodiment v1 of FIGS. ?
?? ? ? ? 5 ? ? ? ? ? ?? 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91
91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91.
Once they have refined each other.
The embodiments shown in FIGS. 9 and 101 provide an effective reflector for the abovementioned purpose while being somewhat simpler to obtain. A loudspeaker device provided with
a reflector not only provides the respective Ori points described with reference to FIG. 1 to FIG. 6
but also of the type of reflector shown in FIGS. 7 to 10. By accommodating the speaker enclosure
therein, the following advantages are also provided. That is, the fc sound waves generated by the
walls of the loudspeaker enclosure are directed by the reflector in substantially the same
direction as the propagation from the front of the loudspeaker cone. This is a three-dimensional
sound and four-channel sound where it is desired to direct each sound wave to a desired listening
area in order to achieve full benefits and full effectiveness of three-dimensional sound and four-
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channel sound <qwadrap It is particularly advantageous in the writing facilities. "IM-28-It should
be noted that, if desired, a reflector advance of the type shown in Figs. 7 to 1? only a
loudspeaker enclosure of the type shown in Figs. 8 to 6 In the case of the speaker enclosure of
the type shown in FIG. 1 and FIG. In the latter case, the loudspeaker enclosures of FIGS. 1 and 2
have a horn-shaped enclosure as a whole in the vertical plane instead of in the horizontal plane
as shown in FIGS. 1 and 2. It is preferable to turn the edge to better match the tail portion of the
loudspeaker. In any event, the present invention contemplates placing the speaker in the
reflector independent of the particular shape of the speaker enclosure, the speaker enclosure
itself being excited to at least be audible in the speaker's shadow F. The above-mentioned format
is capable of generating the squeal NJJ at the frequency of the low frequency part of the range,
and the reflector is a solid line regardless of the size of the sub-image i-24-Kaen Kuroja The effect
is re-arranged so as to direct his low-frequency part towards the only listening area. Further,
according to the present invention, the speaker enclosure is considered to be substantially nonporous to 1 g except for the speaker opening.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a form of a
speaker enclosure according to the present invention IE. The second weir is a partially cut-away
911-diagram, shown in a somewhat simplified manner as the speaker G in the enclosure. FIG. 8 is
a perspective view showing a modification of the speaker enclosure, wherein F! (1) A part of the
TIiI grill is cut and the speaker is installed. FIG. 4 is a plan view of the speaker enclosure shown
in FIG. 8; Figure 5 is a right concave view of the speaker enclosure shown in Figures 8 and 4 and
7t. FIG. 6 is a somewhat enlarged cutaway view showing several installation 1 components of the
speaker enclosure used directly in FIG. 8, FIG. 4 and FIG. 5; FIG. 7 is a perspective view showing a
specific fll of a speaker apparatus according to the present invention incorporating a speaker,
and this specific example is shown in FIGS. 8 to 6 as -t1. A loudspeaker enclosure of the fC type
itself, this loudspeaker enclosure is installed in a reflector pre-assembled according to the
invention. FIG. 8 is a plan view of the embodiment 11 shown in FIG. 7, partially cut away to show
several internal parts, and is a horizontal sectional view. FIG. 9 is a perspective view showing a
second embodiment of a speaker device which is provided with a reflector according to the
present invention vc. 10 is a range diagram of the specific y + 1 shown in FIG. 9; 7.8.9 и и и и и и и и и и
4 # wall 10 и и и и и и и и и и и и и и и и и и и и и и и и и и и и Speaker 12 и и и и и и и и и? ? ? 18 и и и и и и и и и и и и и и и и и и и
и и и и sloped wall 5 и и и и и и и и и и и и и и и и и и и и и и и и и Cloth 17 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
и и и и и и и и и и и и и и Patents by Warren Patents EndPage: 86 Specification 1; i, l] 2, drawings 1 3,
powers of attorney and their translations 1 7 each, inventors other than the above, patent
applicants or correction of attorneys' procedure (form)% formula% patent office Go Katayama
Ishibe 1 display of the case 1: Ml + t 151 ? d ? 118 161 2, title of the invention 2, title of the
invention anti-speaker a) a person concerned with the case to make corrections Patent applicant
4 concerned, agent ? 107 Address Minato-ku, Akasaka, 9-9-15, Minato-ku, Tokyo, List 6,
attached documents, 1 statement, 2 drawings, 1 drawing, 3 powers of attorney and their
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translations 1 each 4 priority irrigation certificate and their translations Two generations, the
above-mentioned 8 and 4 ? + jI] I ?-C Uramitsu. ????????? ?
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