JP4523347B2 - Speaker unit mounting structure and vehicle front seat - Google Patents

Description

The present invention relates to a speaker unit mounting structure and a vehicle front seat .

Various kinds of acoustic information such as music, broadcasting, alarms for alerting from various sensors, and guidance voices of navigation devices are emitted in the interior of a car.
As means for listening to these, a speaker S is generally attached to a door A, a dashboard B or the like as shown in FIG. When it is necessary to secure a volume such as a woofer, it is installed under the seat or in the luggage C. In recent years, it may be installed in the central portion D of the roof by introducing DVD 5.1ch technology or the like.

However, the speaker installation position has a distance from the ear position of the person sitting on the front seat in the first place, farther away for those sitting on the rear seat, and the sound is considerably blocked by the front seat, so the listening efficiency, It was not enough in terms of sound effects and presence. Even if it was going to improve such a point, the installation of the speaker was very limited, and it was difficult to arrange the speaker in a close place.
JP-A-8-310311

The present invention has been made in order to solve the above-described problems. The object of the present invention is to effectively use the interior of the seat as a speaker BOX, so that a person in the rear of the vehicle can efficiently and effectively perform various kinds of acoustic information from the nearest place. Speaker unit mounting structure and vehicle capable of listening to the sound and capable of exhibiting the auxiliary function of the center speaker even for a person sitting in the front seat and listening to the perceived sound with added vibration It is to provide a front seat .

The speaker unit mounting structure of the present invention for achieving the above object, as well as arranging the speaker units in the backrest of the front seat, the output surface of the speaker unit to the seat back board of the backrest the rear side in the back seat toward fixed, is in the backrest said it surrounds the outer periphery of the speaker unit provided a duct member constituting the tubular space portion, the said duct member through holes provided in the closing part facing the speaker unit back It is characterized by being.
In the vehicle front seat according to the present invention, the speaker unit is arranged in the back portion of the seat, the output surface of the speaker unit is fixed to the seat back board on the back side of the back portion, and the back portion is fixed. wherein surrounds the outer periphery of the speaker unit provided a duct member constituting the tubular space portion, the said duct member is characterized by is provided a through hole in closure facing the speaker unit back on.

According to the speaker unit mounting structure and the vehicle front seat according to the present invention, the seat back board is a speaker baffle, so that the speaker unit can be securely and stably mounted, and a part of the seat has a penetrating shape. A duct member is provided on the speaker unit so as to surround the speaker unit to form a cylindrical space, and the speaker unit is fixed to the seat back board in a rearward direction, so that it can be arranged at the best position as a center speaker for the rear seat. In addition, the speaker unit can be easily arranged without being affected by the material inside the seat and the like, and the duct member has a through hole in a closed portion facing the back portion opposite to the speaker unit output surface. Because it is provided, the air on the back of the speaker is resonated, and it can also play an auxiliary role of the center speaker for the front seat, and it has a simple structure and is efficient with one unit including the front seat and the rear seat Sound effect can be raised.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
2 to 4 show a speaker unit mounting structure and a first embodiment of a vehicle front seat according to the present invention.
In FIG. 2, 1 is a vehicle body, 2 is a front seat, and 3 is a rear seat.
The front seat 2 includes a backrest portion 2A, a seat portion 2B, and a headrest portion 2C, and the backrest portion 2A is secured by a back frame that surrounds the periphery although not shown.

  4 is a seat back board attached to the entire back side facing the back seat of the backrest 2A. The seat back board 4 is preferably made of synthetic resin, wood fiber board, metal plate, etc. having a large mass and rigidity, and a speaker mounting hole is provided at a required position, in this example, a portion relatively close to the seat. ing.

Reference numeral 5 denotes a speaker unit. In this example, a cone-type speaker is used, and is attached to the seat back board 4 with the output surface 50 facing the rear seat.
That is, the flange 5a surrounding the output surface 50 is seated on the outer surface of the speaker mounting hole, the remaining portion is inserted into the backrest portion 2A, and the screw is screwed into the seat back board 4 through the screw hole arranged in the flange 5a. The unit 5 is fixed.

7 is a skin stretched on the side in contact with the back of the seated person, and is made of a material having good air and sound permeability, such as a net, a woven fabric, and a knitted fabric.

8 is a cushioning material having a sufficient air layer filled between the seat back board 4 and the skin 7 , and the cushioning material having a sufficient air layer is, for example, a net structure of a synthetic resin such as polypropylene. It consists of a soft porous hollow body represented by a cushion. The properties are arbitrary, such as a molded body and an indefinite shape.

As shown in FIG. 4 , the speaker unit 5 is attached to the seat back board 4 facing the back seat of the backrest portion 2 </ b> A with the output surface 50 facing the back seat. The backrest portion 2 </ b> A corresponds to the speaker unit 5. A hole 20 penetrating in the thickness direction of the backrest portion is provided at the position, and the duct member 9 is embedded therein so as to constitute a cylindrical space portion surrounding the insertion portion of the speaker unit 5.
The duct member 9 is made of synthetic resin, wood fiber board, metal plate, etc. having a large mass and rigidity, and a closing portion 90 is provided on the rear end portion, that is, the side facing the skin 7 so as to prevent air and sound from leaking. It has been. The closing portion 90 faces the back portion opposite to the speaker unit output surface 50. In the present invention, a hole 900 penetrating in the thickness direction is provided in a part of the closing portion 90.

Note that the number of speaker units 5 is not limited to one, but two or more may be attached, and the type of speaker is not limited to the cone type, and various types such as a flat panel type and a micro type can be used.
The position of the speaker unit 5 in the height direction of the backrest part is preferably a part close to the waist, but in addition, a part close to the shoulder may be appropriately selected.

  In the present invention, the output surface side of the speaker unit 5 is firmly fixed to the seat back board 4 as a baffle. In addition, since the duct member 9 is used, the speaker unit 5 is not affected by the internal material of the backrest 2 and is safe from external force applied to the backrest 2A while ensuring a sufficient vibration space at the rear. Can be incorporated at the optimum position.

And the sound output of a speaker can be efficiently radiated | emitted toward the back seat 3, and what sits on a back seat can hear powerful acoustic information directly from the nearest position. Moreover, the vibration generated in the back portion of the speaker unit 5 vibrates the air in the duct member 9 and is emitted from the hole 900 penetrating the thickness direction of the closing portion 90 facing the speaker unit back portion, so that it sits in the front portion. It is possible to experience a pleasant bass sound on the back of a person who is living, and to listen to powerful music that is full of realism, so it can be effective including the front seat and the rear seat. it can.

It is explanatory drawing which shows arrangement | positioning of the speaker in the conventional vehicle. It is explanatory drawing which shows the speaker attachment structure and vehicle seat of this invention.   It is a back side perspective view of the front seat of the present invention. It is principal part sectional drawing of this invention.

2 Front seat 2A Backrest portion 4 Seat back board 5 Speaker unit 9 Duct member 50 Output surface 90 Closure portion 900 Through hole

Claims (2)

With arranging the speaker units in the backrest of the front seat, the backrest portion output surface of the speaker unit on the back side sheet backboard fixed toward the rear seats, the outer periphery of the speaker unit in the backrest A speaker unit mounting structure characterized in that a duct member that surrounds and forms a cylindrical space portion is provided, and a through hole is provided in the duct member at a closing portion that faces the back of the speaker unit. With arranging the speaker units in the backrest of the seat, the output surface of the speaker unit fixed to the rear, is in the backrest surrounds the outer periphery of the speaker unit to the seat back board of the backrest the rear side cylinder a duct member forming a Jo space provided, the vehicle front seat seat in the duct member, characterized in that is provided with a through-hole in closure facing the speaker unit back.

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