JP2009023477A - Seat air conditioner for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To select the natural length of a bellows so that the bellows used for a suction-side duct provided on the suction side of a seat air-conditioning blower does not fall off even in long-term use. <P>SOLUTION: In the seat air conditioner for an automobile, the seat air-conditioning blower 17 is provided to the lower surface of the seat cushion 4 of a vehicle seat 3. The bellows 22 is provided to the suction duct 21 fixed to the suction side of the seat air-conditioning blower 17, and the natural length of the bellows is formed shorter than length with the extension/contraction stroke length of the vehicle seat 3 added to the contracted length of the bellows. Thereby, reaction from the bellows can be provided in normal use to prevent falling off. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle seat air conditioner for air conditioning a vehicle seat.

  A seat air conditioner has been proposed in order to suppress stuffiness of the back, buttocks and thighs of the passengers, and stickiness due to sweat, which could not be resolved only by air conditioning in the passenger compartment.

For example, as shown in Patent Literature 1, air chambers 35 and 34 are provided in the seat cushion 15 and the seat back 14 of the front seat 13, respectively, and cold air or hot air is selectively transmitted from the front-side air conditioner 1 through the connection duct 12. The seats are led to the air chambers 35 and 34 for air conditioning. As the vehicle seat air conditioner, a connection type automobile seat air conditioner that is adapted to drive the front seat 13 in the front-rear direction by means of the rotary ducts 29 and 30 and the telescopic ducts 31 and 32 is shown.
Japanese Utility Model Publication No. 59-164552

  For example, in patent document 2, the air blower 12 which pumps the air in the vehicle interior R to the air blowing hole 7 opened in the seat 1 and the air blowing from the blower 12 to the air blowing hole 7 are being pumped. Seat temperature adjusting means 20 for heating or cooling the air, a vehicle temperature controller 51 for supplying the temperature-adjusted air into the passenger compartment R, a vehicle temperature controller 51 for supplying the air, and the temperature controller The blowing direction changing means 53 for changing the blowing direction of the air at the outlet 52 of the machine 51 and the air of the temperature controller 51 for the vehicle via the blowing direction changing means 53 based on the operation signal D of the blower 12. And a controller 54 for directing the air blowing direction to the air inlet 11 of the blower 12.

Thereby, the temperature-adjusted air can be sent to the intake port of the blower, and the air heated or cooled rapidly and sufficiently can be blown out by passing this air through the sheet temperature adjusting means. That is, a non-connection type vehicle seat air conditioner that sends conditioned air from the vehicle temperature controller 51 in the vehicle compartment to the seat unit is shown.
JP-A-10-278556

  In Patent Document 2, conditioned air is sent from the vehicle temperature controller 51 in the passenger compartment to the seat unit. However, the louver 56 and the damper 66, which are components of the blowing direction changing means 53, are under the instrument, At a distance. Therefore, it diffuses to the air inlet 11 of the blower 12 and the temperature of the conditioned air changes.

  Therefore, another embodiment in which the air guide pipe 61 is extended from the outlet 52 of the vehicle temperature controller 51 to the vicinity of the intake port 11 of the blower 12 is shown. The mechanism for collecting air to the mouth 11 is not good, and the conditioned air that has blown out flows out to the rear seat, and there is a disadvantage that the air-conditioning unit does not reliably suck the air.

  Further, the patent applicant has already proposed a non-connection type automobile seat air-conditioner, and has attempted to improve the inconvenience of Patent Document 2. The proposed automotive seat air conditioning system is configured with a seat air conditioning blower provided on the lower surface of the seat cushion of the vehicle seat, and a wind collecting port for sucking conditioned air fixed to the seat side seat rail. The movement (adjustment action) is accommodated by providing a suction duct provided with a bellows, and the air-conditioned air sucked from the air collecting port is sent to the air-conditioning blower.

  When attaching the duct with the bellows to the vehicle seat, the major problem is ensuring airtightness, and depending on the state of attachment, the bellows reaction force may cause the seat air conditioner to fall out of the air leak. A countermeasure was requested.

  In the design of the duct with the bellows, (1) the natural length of the bellows is increased so that the reaction force acts even at the maximum extension, or (2) There are two ways of thinking, but the installation space in the lower space of the vehicle seat is narrow and cannot be handled by the former design concept. In the latter case, not only is it easy to drop out, but the height of the bellows valley is increased, and this causes a disadvantage that the cross-sectional area of the passage decreases.

  Accordingly, the present invention provides an automobile seat air conditioner using a duct having a bellows that does not fall out even when used for many years.

According to the present invention, there is provided a vehicle seat air-conditioning apparatus, wherein a seat cushion and a seat back are coupled via a swing fulcrum, and the seat cushion is provided on a lower surface of the seat cushion of the vehicle seat. A blower is provided, the discharge side is connected to the passage formed in the vehicle seat, and the suction side is connected to the air collecting port fixed to the seat side seat rail via the suction side duct,
The suction duct is provided with a bellows, and the natural length of the bellows is made shorter than the contracted length plus the length of the vehicle seat expansion / contraction stroke (Claim 1).

  For this reason, since the natural length of the bellows of the suction side duct is shorter than the contraction length plus the expansion / contraction stroke length, the vehicle seat is located at the lowest position (the expansion / contraction stroke is at the maximum) even during the expansion / contraction stroke of the vehicle seat. At a predetermined length from the lower point) to the upper side, the suction side duct has a bellows reaction force that tends to extend, and is difficult to come off and air leakage is unlikely to occur. In addition, since the bellows reaction force is generated up to a predetermined length, the strong pull assembly is not required, and the assembly performance is improved.

In the actual use state, the position of the vehicle seat is rarely used in the uppermost part, and is mostly used in the middle. In this case, the bellows reaction is generated and the bellows is lost. There is little fear. The length of the bellows of the suction side duct is planned to be shorter than the length of the expansion / contraction stroke length of the vehicle seat plus the fixed length of the bellows (maximum contraction length), for example, 2/3 to half (claim) Item 2).

Another vehicle seat air-conditioning apparatus according to the present invention is a vehicle seat in which a seat cushion and a seat back are connected via a swing fulcrum and extend and contract in the vertical direction, and the seat is provided on the lower surface of the seat cushion of the vehicle seat. An air conditioning blower is provided, the suction side of which is connected to the air collecting port fixed to the seat rail, the air outlet side is connected to a passage formed in the seat back of the vehicle seat via the seat side duct, and the seat The side duct is provided with a bellows, and the molding angle of the bellows is made smaller than the angle obtained by adding the operating angle to the minimum bending angle of the seat back. (Claim 3).

As a result, if the forming angle of the bellows of the seat side duct is within a predetermined angle within the operating angle, when the angle is changed to a small direction or a large direction, one of the bellows contracts and the other contracts, but the contraction rate also increases. The rate is not extremely large, durability is improved, and good airtightness can be maintained. The aforementioned bellows forming angle of the seat-side duct is expected to be a predetermined angle within the operating angle, for example, from 2/3 to about half (claim 4).

As described above, according to the first aspect of the present invention, since the reaction force generated from the bellows can be obtained by the bellows provided in the suction side duct during normal use, the suction side duct does not fall out. . Even at the time of manufacture, if the vehicle seat is in the middle, a reaction force is generated on the bellows of the suction duct, which eliminates the need for pulling assembly, and has the advantage of improving the assembling property.

According to the third aspect of the present invention, since the bellows forming angle of the seat side duct is made smaller than the angle obtained by adding the operating angle to the minimum bending angle of the seat back, it is in the vicinity of the angle when the occupant is seated. Since it can be set, when the seat back swings in the front-rear direction, the bellows of the seat-side duct does not shrink or extend excessively, durability is improved, and good airtightness is maintained.

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show a first embodiment of an automotive seat air conditioner according to the present invention. Although the vehicle seat air conditioner 1 is configured to use conditioned air of a vehicle interior air conditioning unit (not shown) for air conditioning the vehicle interior, the cold air or hot air blown from the vehicle air conditioning unit is not shown. 3 is led through a floor duct (not shown).

The vehicle seat air conditioner 1 sends air-conditioned air to the back, buttocks, and thighs of a passenger sitting on a vehicle seat 3 to suppress stickiness caused by stuffiness or sweat. The cushion 4 is composed of a seat back 5, and both 4 and 5 are connected via a support shaft 6, and the seat back 5 swings around the support shaft 6.

The vehicle seat 3 has a stroke not only in the front-rear direction but also in the up-down direction, and is configured to fit the body of the seated passenger. The vehicle seat 3 is fixed to the vehicle body 9 via a seat side rail 8a and a vehicle body side seat rail 8b in which the vehicle seat 3 moves in the front-rear direction (traveling direction). Then, the vehicle seat 3 is provided with a known expansion / contraction mechanism 10 that strokes in the vertical direction.

The vehicle seat 3 is formed with air outlets 12 and 13, respectively, and a seat air conditioner blower 17 that sends conditioned air to the air outlets 12 and 13 through the passages 14 and 15 is provided on the seat cushion 4 of the vehicle seat 3. It is attached to the bottom.

The blower for air conditioning 17 has a centrifugal fan 18 disposed therein, and has a suction port 19 and a discharge port 20 on the lower surface, and a suction side duct 21 is connected to the suction port 19.

The suction-side duct 21 includes a bellows 22 and a wind collecting port 23. The bellows 22 is extendable and its natural length C is shorter than the length obtained by adding the expansion / contraction stroke B to the contraction length A (the most contracted length) A + B > C. The natural length is preferably about 2/3 to half of the length of A + B. As a result, although the total expansion stroke A + B of the vehicle seat 3 is used, in reality, the usage state of the vehicle seat 3 is rarely used at the uppermost position, and is most frequently used in the middle, in which case the bellows 22 is compressed. Then, the reaction force from it will not get out of the inlet 19.

The bellows 22 can be attached by setting the vehicle seat 3 at an intermediate position in the vertical direction, so that the bellows 22 is assembled in a compressed state. be able to.

The air collecting port 23 collects and sucks conditioned air flowing on the lower surface of the vehicle seat 3, has an opening in the traveling direction, is connected to the lower end of the bellows 22, and is fixed to the seat side seat rail 8b. . Therefore, the air collecting port 23 moves in the front-rear direction together with the vehicle seat 3.

And since the air collection port 23 is always attached to the seat rail 8a which slides on the seat rail 8b fixed to the floor 24, a small clearance can always be maintained from the floor 2e, and the conditioned air blown out is not missed. Wind can be collected.

3 and 4 show a second embodiment of the automotive seat air-conditioning apparatus of the present invention. The vehicle seat air conditioner 1 is configured to use conditioned air of a vehicle interior air conditioning unit (not shown) for air conditioning the interior of the vehicle, but is not shown. The vicinity of the seat 3 is led through a floor duct (not shown).

The vehicle seat air conditioner 1 sends air-conditioned air to the back, buttocks, and thighs of a passenger sitting on a vehicle seat 3 to suppress stickiness caused by stuffiness or sweat. The cushion 4 and the seat back 5 are formed, and both 4 and 5 are connected via a support shaft 6, and the seat back 5 swings in the front-rear direction with the support shaft 6 as a fulcrum.

Although not shown, the vehicle seat 3 has a stroke not only in the front-rear direction but also in the up-down direction, and is configured to fit the body of the seated passenger. The vehicle seat 3 is formed with air outlets 12 and 13, respectively, and a seat air-conditioning blower 17 that sends conditioned air to the air outlets 12 and 13 through the passages 14 and 15 is provided in the vehicle seat. 3 is attached to the lower surface of the seat cushion 4.

  The air-conditioning blower 17 has a centrifugal fan 18 disposed therein, and has a suction port 19 on a lower surface and a discharge port 20 on a side surface. The suction port 19 includes a bellows 22 and an air collection port 23. The suction side duct 21 is connected.

  Further, a sheet side duct 26 is connected to the discharge port 20 of the air conditioner blower 17. The seat-side duct 26 includes a bellows 27 and attachment members 28 and 29 for insertion and fixation at both ends thereof, and the discharge port 20 and the passage 15 of the air-conditioning blower 17 through the attachment members 28 and 29. Has been inserted.

  The bellows 27 can expand and contract, and its forming angle F is smaller than the angle obtained by adding the operating angle E to the minimum bending angle D of the seat back 5 so that D + E> F. The molding angle is preferably about 2/3 to half of the D + E angle. Accordingly, the seat back 5 can be set in the vicinity of the molding angle when the occupant is seated, so that the seat side bellows does not shrink or extend significantly when the seat back swings in the front-rear direction, and durability is improved. Improve and maintain good airtightness.

  The other parts are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and description thereof is omitted.

1 is a configuration diagram showing a first embodiment of the present invention; a is explanatory drawing at the time of the maximum expansion | extension of a suction side duct. b is explanatory drawing at the time of the maximum shrinkage | contraction of a suction side duct. It is a block diagram which shows the 2nd Example of this invention. It is explanatory drawing of a sheet side duct.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car seat air conditioner 3 Vehicle seat 4 Seat cushion 5 Seat back 6 Support shaft 8a Seat side seat rail 8b Car body side seat rail 10 Telescopic mechanism 12 Air outlet 13 Air outlet 14 Passage 15 Passage 17 Seat air conditioner blower 18 Fan 21 Suction Side duct 22 Bellows 23 Air collecting port 26 Seat side duct 27 Bellows

Claims (4)

In a vehicle seat in which a seat cushion and a seat back are connected via a swing fulcrum and extend and contract in the vertical direction,
A blower for seat air conditioning is provided on the lower surface of the seat cushion of the vehicle seat, the discharge side is connected to a passage formed in the vehicle seat, and the suction side is a collection of fixed to the seat side seat rail via the suction side duct. Connected to the wind vent,
An automotive seat air-conditioning apparatus comprising a bellows in the suction side duct, wherein the natural length of the bellows is shorter than the contracted length of the expansion / contraction stroke length of the vehicle seat.   2. The vehicle seat air-conditioning apparatus according to claim 1, wherein the natural length of the bellows of the suction side duct is about 2/3 to half of the contracted length of the expansion / contraction stroke length of the vehicle seat. In a vehicle seat in which a seat cushion and a seat back are connected via a swing fulcrum and extend and contract in the vertical direction, a seat air conditioner blower is provided on the lower surface of the seat cushion of the vehicle seat, and the suction side is a seat rail The air outlet side is connected to the passage formed in the seat back of the vehicle seat through the seat side duct,
An automotive seat air-conditioning apparatus comprising: a seat bellows provided with a bellows; and a bellows forming angle made smaller than a minimum bending angle of the seat back plus an operating angle. 4. The automotive seat air-conditioning apparatus according to claim 3, wherein the bellows forming angle is set to an angle that is about 2/3 to a half of a minimum bending angle of the seat back plus an operating angle.

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