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DESCRIPTION JPS54128426

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DESCRIPTION JPS54128426
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the cabinet of the
present invention with the cover on the front of the cabinet removed, and FIG. 2 is a perspective
view of the cabinet with the front cover attached thereto. FIG. 3 shows a cross-sectional view of
the bass cabinet. 1 иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии ... partition
wall, 5 ...... low acoustic speaker, 51 ...... cone paper, 6 ...... louvers, 61, 62 ...... variable vane, 7,8 .....
Cabinet front cover.
DETAILED DESCRIPTION OF THE INVENTION The present invention is an improved VCI 11 for a
bass speaker cabinet. In the proposal, since this type of bass speaker cabinet has a large lid as a
furniture between furniture etc., a speaker having a structure that can be obtained by combining
the design consideration and the sound effect with bass. It provides a cabinet. tl) (, J,-tz'S'lZ '-As is
known, this type of bass speaker cabinet is a tube and an opening called a port along with a onespeaker opening on the front of the closed cabinet A bass reflex type cabinet is widely used,
which provides a section and reverses the phase of the sound radiated from the rear face of the
speaker to widen the reproduction range of the bass range. This bass reflex lid cabinet is
commonly used because its amplitude is minimal and distortion is small at the resonant
frequency of the cabinet, and the bass reproduction limit can be lowered to 1 / V'T as compared
with a closed cabinet of the same volume. In this spring-reflex type cabinet, since the abovementioned speaker opening and the opening of the port are exposed on the 111 side, the # 1usually covers it with a saran net or the like in terms of design. On the other hand, in the springreflex type cabinet, volume change occurs in the air in the cabinet due to the vibration of the
speaker cone jIlbK, and sound is emitted from the port, but at very low frequency, the sound is
opposite in phase as in the back-left cabinet. It is emitted and becomes a dual sound source. In
some spring-reflex type cabinets, w # open area of the tube of the bow 12) adjustable wing or
adjustable wing with louver is deposited, and by adjusting the louver of the kernel appropriately
by K Depending on the conditions of the sound field where the cabinet is installed or the
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preference of the listener, the sound pressure in the low range may be adjusted. Conventionally,
such louvers are often installed in the pipe of a boat, and the louvers are adjusted by hand from
the opening on one surface of the boat. Was done. As a result, the opening of the bass reflex lid 3
bayonet boat with this type of louver can not be covered by the saran net together with the
loudspeaker aperture as described above, and the opening of this boat is an island in the cabinet
1III. It wasn't desirable in terms of design, as it came out nine days ago. In addition, since this
bass reflex type cabinet is provided with a louver in the pipe of the boat, when the louver
completely closes the pipe of the boat, the internal volume as a closed type cabinet is the position
of the opening of the boat and the louver. The pipe volume integral becomes smaller.
This reduces the bass re (3) production limit of the writing cabinet. The proposal is made in view
of this point, and the louver itself has a design effect on the front of the cabinet, and the
adjustable position of the louver has a louver that can make the best use of the internal volume
in the sealed state of the port. Type speaker cabinet. The following is an outline of the proposal
according to the example drawings. FIG. 1 is a perspective view of an embodiment cabinet of the
present invention, in which a middle yavinet 1 for a horn-type speaker dedicated to medium
sound, and a speaker cabinet 3 for running sound and mounting of a horn-type speaker 2 for
rattling sound It shows what was divided into. The low-sound speaker cabinet 3 forms the bass
reflex type speaker cabinet as described above, and as shown in the cross-sectional view in FIG.
An opening 41 is formed. The opening 41 is formed continuously with the inside of the cabinet
and constitutes the port 4 together with the nine partition walls 42. Accordingly, (4) the port 4 is
formed by the partition wall 42 and the left and right wall plates 31. 32 and the bottom plate 33
of the cabinet 3. Further, in the cabinet 8, a baffle plate 34 is provided in a row at an end
opposite to the one end portion 41 of the partition wall 42. As a result, the internal space of the
cabinet 8 is formed by the left and right wall plates 31.32, the bottom plate 33, the partition 42,
the baffle plate 34, the upper plate 35, and the back plate 36. As is well known, the baffle plate
34 is provided with holes 36 in accordance with the speaker opening diameter so that the cone
51 of the low sound speaker 5 faces the external space. Here, 52 is a speaker unit, 53 is a
speaker frame, and this frame 53 is provided with a baffle plate 34KJl. On the other hand, as
shown in FIG. 8, the present looper 6 is composed of, for example, two rotatable variable wings
61.62, which are disposed at the opening 41 of the port 4 of the cabinet 8, as shown in FIG. It is.
The variable wings 61.62 have respective shafts 63.64 supported by the left and right 1iIl plates
31.32 of the cabinet 3, respectively. Therefore, if each variable wing 61. 62 is pushed downward,
the port 4 (the group opening 41 is completely closed, and the internal space of the cabinet 3
becomes equivalent to the closed cabinet. Also, if each variable wing 61.62 is pushed upward, the
cabinet 3 becomes 'P' with the bass reflex type cabinet in which the inner space and the outer
space are communicated.
Thus, the louver 6 can appropriately change the sound effect by adjusting this. By the way, as
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shown in the eleventh, as for the cabinet 1 dedicated to medium sound and the cabinet 3 of the
cabinet 3 for low sound, all the compartments 1142 constituting the boat are exposed on the
opening lids of the high sound-medium sound and low sound speakers. There is a problem in the
appearance of the cabinet. For this reason, as shown in FIG. 2, the cabinet 8 is attached with a
cabinet-box cover 7.8 on which the same saran net or the like is attached in design as shown in
FIG. 8 is configured to leave only the lower front of the cabinet forming the opening 41 of the
boat 4. Although this makes it possible to adjust lou z <fJ, since the present louver 6 is disposed
at the opening 41 of the boat (6) 4 facing the front face of the cabinet 3 at 41, the variable wing
61.degree. Can easily be done without putting a hand into the inside of port 4. In addition, the
variable wings 61.62 of the present proposal are not friends for changing the Kf 41i-like effect
but contribute to the design of the cabinet 1i1?, for example, when the opening 41 is closed The
design effect of the design is applied to the design effect. Also, each variable wing 61. 62 in this
position can maximize the internal volume when the opening 41 is completely closed, i.e. the port
4 is sealed. As described above, the present invention improves the sound effect of the
conventional bass reflex lid cabinet having this type of louver, improves the operability of the
louver, and the louper actively contributes to the design effect of the front of the cabinet It is
possible to provide a large bass reflex speaker cabinet with a large practical effect ?.
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