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JPH02123899

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DESCRIPTION JPH02123899
[0001]
BACKGROUND OF THE INVENTION The present invention relates to a speaker assembly for use
in a vehicle such as a car, in particular, one behind each seat in the vehicle, one speaker on each
side of the head of the person sitting in the seat, The present invention relates to a speaker
assembly that can be mounted. In the case of a type of seat where the headrest is integral with
the seat back, it is desirable that the assembly be associated with the headrest. There are many
and many different types of loudspeaker m-systems for car and aircraft seats. Among other
things, the speakers incorporated in the headrest mounted on the seat are, for example, patents
4,638,884, 4.490.842, 4,042,791, 3,944,020, etc. Patent Nos. 3.971 and 162 disclose special
seat back mounting methods which are disclosed in U.S. Pat. Due to various reasons such as
manufacturing complexity, handling difficulties, installation difficulties and the like, these
conventional systems have not always been successful and have not received widespread
acceptance. It is an object of the present invention to provide an improved and simplified
loudspeaker assembly that overcomes the deficiencies of the prior art systems. SUMMARY OF
THE INVENTION The improved speaker m-assembly according to the invention comprises two
speaker supports which engage with the opposite sides of the seat back with a head support
which protrudes upwards from the seat back main part or main part, and A flexible belt which
extends around the speaker support and which tightens and tightens the clamping support
tightly and securely around the back of the seat so that it can be mounted at the desired height
above the upright vehicle seat back The two speaker housings are rotatably mounted on the
supporting portion so that they can be independently adjusted in angle, so that the speaker
housing can be held at a desired height relative to the back of the seat it can. The mounting belt
of the preferred embodiment has a free end for overlap at the seat back, with a hook-and-loop
fastener on the side adjacent to the overlap. The speaker support is a U-shaped member that is
tightly fastened by a belt and has a resilient and flexible free end in tight engagement with the
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seat back, and the arms have gripping teeth on the inside. The speaker ハ ウ ジ ン グ housing is
rotatably attached to the support by a hinge portion to form a gap through which the belt passes,
and the hinge portion is formed to provide frictional resistance to the rotation of the speaker
housing, so the speaker housing It can be removably held in each arbitrarily selected position.
The speaker assembly according to the invention having the above basic structure is extremely
easy to attach to the seat back and makes the speaker housing aesthetically pleasing and
unobtrusive to any desired level along the back. Can be held. Other features and advantages of
the present invention will become apparent-when the following detailed description is read in
conjunction with the accompanying drawings. (Preferred Embodiment) As shown in the attached
drawings for the purpose of illustration, the speaker assembly which is one embodiment of the
present invention is designated by the numeral IO in FIG. It projects upwardly from the upper
end 13 of the back 14 to form an upper extension of the seat back. Originally, it is mounted on
the vehicle seat 11 with a headrest 12 for safety. The seat has a usual lower part 15 for a person
(not shown) to sit, and the person can lean on the main part 14 of the seat back and head-sink
the front of the head support 12. The speaker assembly is provided with two speaker housings
17 for delivering sound from both sides of the head for a stereo effect. The two speaker housings
may be of identical construction and have a perforated grill 18 at the forwardly facing side, i.e.
adjacent to the reuser's ear. Although each speaker housing contains a speaker 18, the speaker is
of conventional construction and is shown here simply as a dotted circle in FIG. Each speaker is
connected to the vehicle's acoustic system by a connector (not shown), which preferably extends
from the rear side of the speaker housing downward along the rear of the seat back 14.
According to a first feature of the invention, each speaker housing 17 is U-shaped which fits
snugly around the side edge of the seat back, here one end of the headrest 12 as shown in FIG.
An elongated flexible belt 21 supported on the seat back 14 by the speaker support 20,
extending around both speaker supports and adjustably fastened around the head support to
tighten the support and head support 21 Is held in place by The speaker support has a resilient
and flexible leg 22 which is pressed against the head by a belt, and a gripping means 23 is
formed on the inside of the leg so that it can be pressed into the head rest. Thus, the belt and
support can hold the speaker housing firmly at any level above the headrest. As shown most
clearly in FIG. 1.5.6, the bell) 21 consists of a relatively wide band made of a suitable material, for
example neobrene rubber, which combines elasticity and flexibility, Inside but long enough to
have free ring that can overlap on one side of the headrest.
For adjustment, the overlap is fitted with engagement means, but here it forms interlocking
surface fastener pieces fixed on the side adjacent to the overlap end. Depending on the
application, the size of the belt will vary, but here the preferred dimensions are as follows: 1/8
inch thick, about 31/2 inch wide and about 34 inch long. The surface fastener is a piece of
material attached to a belt. The "loop" pieces of the surface fasteners cover the entire outer
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surface of the belt, and the "hook" pieces are sewn to one end 25 of the belt to form an extension
of the belt and to "hook" fasteners inwardly as shown in FIG. It is preferable to make it come. As
shown in FIG. 3.5, each speaker support 20 has a generally U-shaped cross-section and is made
of a plastic material with appropriate flexibility, so the legs 22 of the support are shown in FIG. It
can move. However, what is illustrated is somewhat larger than the range of movement required
under normal conditions. However, the greater the range of exercise, the greater the fitness of
the assembly in mounting on the back of various sized seats. As shown in FIG. 3, the grips 23 on
the inner recess of the speaker support 20 are a series of teeth that project inward from the
support legs 22. The set of teeth can take various forms, but here it is preferable to have a
chipped surface on the inside of each leg to form short teeth that hold firmly the material of the
headrest without compromising . The outer ridges of each speaker support 20 are preferably
smoothly curved to facilitate sliding engagement with the belt. Two hinge lugs 27 for mounting
the speaker Q housing 17 on the support portion project laterally outward from the central
portion at the top and bottom of each support portion, and each speaker housing is provided
with mounting ribs 28 (see FIG. 2) on the inside, ie, the side closest to the seat back, with the
hinge lugs resting on the ribs. The double housing hinge pin 29 is attached at its ends to the two
hinge branches of each support as shown in FIG. 2 and extends through the longitudinal holes 30
in the mounting ribs so that the hinges of the speaker housing Form Frictional resistance to
rotation of the housing 17 is provided to the hinge, either by forcing the barb 27 to the end of
the rib 28 or by providing a tight fit to the hinge pin. Because of the resistance, the speaker
housing can be releasably held in any chosen angular position against the speaker support, ie
against the head of the person sitting in the seat.
As shown most clearly in FIG. 2, since the hinge pin 29 is spaced outwardly from the support 20,
the mounting rib 28 on the outer portion of the support and on the adjacent speaker housing is
shown. There is a gap between each speaker unit and the side of the speaker. These gaps are
sized to allow the bell to slide in both the longitudinal and lateral directions, so excessive
loosening of the speaker assembly occurs even before the assembly is installed on the seat back.
You can prevent that. If the thickness of the belt is about 178 inches, the gap is slightly wider
and the height is slightly thicker than the width of the belt. When the "loop" portion of the hookand-loop fastener covers the outside of the belt, the gap is wide enough to accommodate the
material. As evident from the above description, the loudspeaker assembly according to the
invention places the support 20 at the desired height on either side of the seat back or headrest,
tightens the belt and joins the overlapping ends of the strips to each other It can be installed
quickly and easily in any seat or head support. The belt is preferably slightly stretched to ensure
that the support is secured to the seat back and that the clamping pressure is maintained after
installation. The speaker assembly thus attached can be connected to the vehicle's sound system
by means of a connector and the system can be used immediately. Of course, the user can adjust
the angular position of the speaker housing separately as desired. Therefore, the present
invention provides a relatively simple speaker assembly that can be easily and quickly attached
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to the seat back. Although the preferred embodiments have been described and illustrated above,
it will be obvious to those skilled in the art that various modifications and variations can be made
without departing from the spirit of the present invention.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a perspective view of an in-vehicle seat equipped with a loudspeaker assembly according
to the invention, in which the loudspeaker assembly is mounted on a headrest which forms part
of the back of the vehicular seat.
FIG. 2 is a partially enlarged cross-sectional view taken along line 2-2 of FIG. FIG. 3 is a top view
of the speaker support shown partially in FIG. 2 with dotted lines showing selectable bending
positions of the support force. FIG. 4 is a side elevational view of the speaker support of FIG. 3 as
viewed in the direction of arrow 4-4 of FIG. 3; FIG. 5 is an enlarged partial top view of the
speaker assembly and headrest of FIG. 1 with dotted lines indicating selectable angular positions
of the speaker housing. FIG. 6 is an enlarged partial front elevation view of the seat back even
with the speaker assembly head shown in FIG. 10: Speaker assembly 11: Vehicle seat 12:
Headrest 17: Speaker 壷 housing 19: Speaker 21: Belt Patent application agent
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