JP5983129B2 - Vehicle seat with air conditioner - Google Patents

Description

  The present invention relates to a vehicle seat with an air conditioner.

  The seat disclosed in the following patent document includes an air conditioner for generating air from the seat cushion and the seat back. Air is blown out of the seat through a duct provided inside the seat from the air conditioner. Generally, in order to prevent the cross-sectional shape of the duct from being deformed by a load seated on the seat, the duct is preferably formed of a hard material capable of maintaining the shape.

JP 2002-225539 A

  However, when the duct is provided across the seat cushion and the seat back, if the entire duct is formed of the hard material as described above, there is a disadvantage that the duct cannot be deformed following the reclining of the seat back. . On the other hand, if a part of the duct is made of a soft material capable of deforming its shape, when the seat back is reclined, the cross-sectional shape of the duct is deformed such as being crushed in the soft part as shown in FIG. As a result, the air conditioner may not function properly.

  The present invention has been made in view of such problems, and the problem to be solved by the present invention is an air conditioner for adjusting a relative angle of seat constituent members in a vehicle seat including an air conditioner. It is in suppressing the deterioration of the function of the.

In order to solve the above problems, the vehicle seat with an air conditioner according to the present invention takes the following means. A vehicle seat with an air conditioner according to a first aspect of the present invention includes a first seat constituent part and a second seat constituent part arranged such that a relative angle between adjacent seating surfaces of the vehicle seat is adjustable, It is a seat provided with the duct for performing sheet air conditioning arranged ranging over the 1st sheet constituent part and the 2nd sheet constituent part. The duct includes a first duct part disposed on the first sheet constituent part side and a second duct part provided on the second sheet constituent part side. Either one of the first duct portion and the second duct portion is formed in a rigid shape that does not deform when the relative angle is displaced, and the other is formed in a flexible shape that can be deformed when the relative angle is displaced. The joint part of the first duct part and the second duct part is joined to the duct axis inclining in the direction of relative angular displacement of the duct, and the direction of inclination is directed from one end to the other end of the relative angle adjustable range. sectional area of the duct portions of the flexible shape side upon angular displacement Te is the direction that do not narrow small. According to this, when adjusting the relative angle of a 1st sheet | seat structure part and a 2nd sheet | seat structure part, it suppresses the fall of the function of an air conditioner by the deformation | transformation of the cross-sectional shape of a 1st duct part or a 2nd duct part. it can.

  The vehicle seat with an air conditioner according to a second aspect of the present invention is the vehicle seat with an air conditioner according to the first aspect, wherein the deformable flexible duct portion has a bellows shape. Composed. Therefore, the shape of the connecting duct can be changed with a simple structure.

  According to 1st invention, the fall of the function of the air conditioner by the deformation | transformation of the cross-sectional shape of a duct can be suppressed. Moreover, according to 2nd invention, the shape of a connection duct can be deformed with a simple structure.

It is the whole view seen from the side of the sheet concerning an embodiment. It is sectional drawing seen from the side surface of a seat containing the duct of the part arrange | positioned ranging over a seat back and a seat cushion. It is an enlarged view of the junction part of a back side duct and a connection duct. It is sectional drawing of a connection duct. It is a schematic diagram which shows the deformation | transformation aspect of the connection duct which concerns on embodiment. It is a schematic diagram which shows the preferable deformation | transformation aspect of the connection duct which does not apply this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. A vehicle seat 10 shown in FIG. 1 is provided on a seat cushion 11 on which an occupant sits, a seat back 13 connected to a rear portion of the seat cushion 11 and serving as a backrest of a seat occupant, and an upper portion of the seat back. And a headrest 15 that supports the head of the seated person. The seat cushion 11 and the seat back 13 respectively include a cushion frame and a back frame that form a skeleton. The back frame has a lower frame 21 extending in the seat width direction, and the cushion frame has a rear frame 22 extending in the seat width direction (see FIG. 2).

  Since the relative angle of the backrest surface 13a of the seat back 13 with respect to the seating surface 11a of the seat cushion 11 can be adjusted, the seat back 13 can be tilted back and forth with respect to the seat cushion 11 with the width direction of the seat as the rotation axis. Thus, the lower part of the back frame is connected to the rear part of the cushion frame. The connecting portion is provided with a reclining device 27 for adjusting the tilt angle of the seat back 13. The reclining device 27 can restrict (lock) or allow (unlock) the tilting of the seat back 13. The regulation of tilting is possible within a predetermined tilting range. In particular, when the seatback 13 is reclined and used as a backrest, the seatback 13 is within the reclining tilting range included in the predetermined tilting range. The tilt angle is adjusted. In FIG. 1, the position that is the front limit of the reclining tilt range is indicated by a solid line, and the position tilted backward from the position within the same range is indicated by a two-dot chain line. The reclining device 27 includes a rod 27a that transmits the operation of the mechanism provided on the left and right at the position of the tilt axis A of the seat back 13 (see FIG. 2).

  The seat cushion 11 and the seat back 13 are provided with a cushion pad 23 and a back pad 24, respectively, as shown in FIG. These are, for example, pad materials made of polyurethane foam. The cushion pad 23 is attached to the upper side of the cushion frame to form the seating surface 11a, and the back pad 24 is attached to the front side of the back frame to form the backrest surface 13a. A seat cushion cover 25 and a back cover 26 are covered on the seat cushion 11 and the seat back 13, respectively.

  As shown in FIG. 1, the seat 10 is provided with an air conditioner 30 for air conditioning in the passenger compartment, particularly in the vicinity of the seat 10. The air conditioner 30 includes a blower 31 that blows the taken-in air, and blowout ports 35a and 35b through which the blown air blows out of the seat. In the present embodiment, the blower 31 is disposed in the lower portion of the seat cushion 11, and the outlets 35 a and 35 b are respectively provided on the seating surface 11 a of the seat cushion 11 and the backrest surface 13 a of the seat back 13. ing. The air conditioner 30 further includes ducts 40a and 40b through which the blown air passes. The ducts 40a and 40b are disposed so as to communicate the blower 31 and the outlets 35a and 35b. The air conditioner 30 may include a heat exchanger for adjusting the temperature of the blown air. Air is blown from the blower 31 through the ducts 40a and 40b to the seat occupant, for example, from the outlets 35a and 35b.

  Since the blower 31 and the air outlet 35b of the backrest surface 13a are disposed on different sides of the seat cushion 11 and the seat back 13, respectively, the duct 40b is disposed across both the seat cushion 11 and the seat back 13. The extended portion is provided. In particular, this extending portion of the duct 40b is arranged so as to cross the rod 27a behind it. Further, as shown in FIG. 2, this portion includes a duct 41 (cushion side duct 41) extending to the seat cushion side, a duct 49 (back side duct 49) extending to the seat back side, and a duct 45 connecting between them. (Connecting duct 45). In the present embodiment, the connecting duct 45 has a rectangular cross section having long sides in the width direction of the seat as shown in FIG. 4, and the back side duct 49 and the cushion side duct 41 also have the same cross section. ing. In some embodiments, these may have a circular cross section or an oval cross section.

  The back side duct 49 is directly or indirectly fixed to some member (for example, the lower frame 21) of the seat back 13, and accordingly, when the seat back 13 tilts, the back side duct 49 also tilts. . The cushion side duct 41 generally extends in the front-rear direction, but its end is bent upward. The cushion side duct 41 may be fixed to the seat cushion 11 or the floor of the passenger compartment.

  The cushion side duct 41 and the back side duct 49 are formed so as to maintain their shapes. The material of the cushion side duct 41 and the back side duct 49 can be, for example, polypropylene or polyethylene. On the other hand, the connecting duct 45 has flexibility and is formed so that its shape can be deformed. Specifically, the connection duct 45 has a bellows structure as shown in FIG. As the material of the connecting duct 45, a material softer than the cushion side duct 41 and the back side duct 49, such as elastomer or rubber, can be used.

  The connection duct 45 in this embodiment is formed separately from the cushion side duct 41 and the back side duct 49, and is joined to these at the end. That is, one end of the connection duct 45 is joined to the end of the cushion side duct 41, and the other end of the connection duct 45 is joined to the end of the back side duct 49. FIG. 3 shows an enlarged structure of the joint portion 47 between the connection duct 45 and the back side duct 49 in the present embodiment. This joint structure includes a flange that is provided at the end of the back duct 49 and protrudes radially outward, and a claw that is provided at the end of the connecting duct 45 and grips the flange. The structure of the joint 43 between the connecting duct 45 and the cushion side duct 41 is the same. Note that, depending on the embodiment, the joining structure may be formed by other means such as bonding of both ends, and the connection duct 45 is integrally formed with the cushion side duct 41 and the back side duct 49. You can also.

  Next, the action of the joint portion 47 between the connection duct 45 and the cushion side duct 41 when the seat back is tilted reclining will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram according to the present embodiment to which the present invention is applied, and FIG. 6 is a diagram according to a form to which the present invention is not applied. Moreover, (A) of each figure shows a state when the seat back is at the front end position of the reclining tilt range, and (B) shows a state when the seat back is tilted backward from the front end position. In each figure, the tilt axis A of the seat back is also shown, and the back side duct 49 is also generally tilted about the tilt axis A.

  When the seat back 13 is at the front end position of the reclining tilt range, the back side duct 49 and the connecting duct 45 are linear (see the solid line in FIG. 1). At this time, the joint surface of the joint portion 47 between the connection duct 45 and the cushion side duct 41 is perpendicular to the longitudinal direction of the duct (that is, the air flow direction), as schematically shown in FIG. It has become. On the other hand, the joint surface between the connection duct 45 and the back side duct 49 is inclined upward. In other words, the joining surface is positioned such that the rear side is shifted upward with respect to the longitudinal direction of the duct with respect to the front side. Therefore, assuming that the inner diameter D1 of the back side duct 49 is equal to the inner diameter D2 of the connecting duct 45, the inner diameter D3 of the end portion measured along the joining surface is larger than the inner diameters D1 and D2 measured perpendicular to the flow direction. large.

  On the other hand, when the seat back 13 tilts backward from the front end position, the back side duct 49 and the connecting duct 45 bend at the joint portion 47 (see the chain line in FIG. 1). In this tilting process, as schematically shown in FIG. 5B, the end of the connecting duct 45 is changed in direction by being pushed by the end of the back duct 49 maintaining the shape. As a result, the inner diameter of the connecting duct 45 whose shape can be deformed is generally expanded. For example, after the seat back is tilted, the inner diameter D2 ′ measured perpendicular to the flow direction in a certain portion of the connecting duct 45 shown in FIG. 5B is wider than the inner diameter D1 of the back-side duct 49 and joined at the end. Approaching the inner diameter D3 along the surface. That is, the inner diameter D2 'after tilting is wider than the inner diameter D2 before tilting. On the other hand, as shown in FIG. 6A, in the embodiment in which the present invention is not applied, the inner diameter D2 of the connecting duct 145 may be decreased in the tilting process of the seat back, which is not preferable. In this embodiment, the joint portion 147 between the connection duct 145 and the back duct 149 has a joint surface perpendicular to the flow direction. According to this, for example, the inner diameter D2 ″ at a certain portion of the connecting duct 145 shown in FIG. 6B is smaller than the inner diameter D2 before tilting.

  As described above, according to the present embodiment, when the seat back 13 (second seat constituent part) tilts backward from the front end position with respect to the seat cushion 11 (first seat constituent part), the back side duct 49. The (second duct part) and the connecting duct 45 (first duct part) bend at the joint 47, but the inner diameter after tilting is generally wider than the inner diameter before tilting. That is, even if the cross-sectional shape of the connecting duct 45 is deformed, the inner diameter is difficult to decrease. Therefore, it is possible to suppress the occurrence of resistance to the air flow in the connection duct 45 due to the change in the cross-sectional shape of the connection duct 45, thereby suppressing the deterioration of the function of the air conditioner 30 when the seat back 13 is tilted. can do.

  Furthermore, the connection duct 45 is configured by a bellows structure that can be deformed. Therefore, the shape of the connecting duct 45 can be deformed with a simple structure.

  In addition, this invention is not limited to said embodiment, It can implement with other various forms. For example, the arrangement position of the blower is not limited to the lower part of the seat cushion as in the present embodiment, and may be, for example, the rear part of the seat back. Further, the blowout port is disposed at least on the side of the seat cushion and the seat back where the blower is not provided, and a duct communicating the blower and the blowout port needs to straddle the seat cushion and the seat back. The position of the air outlet is not limited to the seating surface of the seat cushion or the backrest surface of the seatback, and may be the back surface of the seatback so as to blow air toward the seated person of the seat behind, for example.

  Furthermore, the first and second seat constituent parts are not limited to the combination of the seat cushion and the seat back as in the present embodiment. For example, a pair of a seat cushion and an ottoman having a leg support surface whose relative angle with respect to the seating surface can be adjusted, and a pair of an upper portion and a lower portion of a seat back whose relative angle of the backrest surface can be adjusted. May be.

10 seat 11 seat cushion (first seat component)
11a Seating surface (sitting surface)
13 Seat back (second seat component)
13a Back surface (seat surface)
27 Reclining device 30 Air conditioner 31 Blower 35a, 35b Outlet 40a, 40b Duct 41 Cushion side duct 43 Joint 45 Connection duct (1st duct part)
47 Joint 49 Back side duct (second duct part)
51 Flange 53 Claw

Claims (2)

A first sheet constituting part and a second sheet construction site, a duct for conducting seat air conditioning disposed across said first sheet construction site and the second sheet construction site, in the air conditioner with a vehicle seat comprising There,
The relative angle of the adjacent seating surfaces of the vehicle seat can be adjusted by tilting at least one of the first seat constituent part and the second seat constituent part about a certain rotation axis,
The duct is composed of a first duct part disposed on the first sheet constituent part side and a second duct part provided on the second sheet constituent part side,
Either one of the first duct part and the second duct part is formed in a rigid shape that does not deform when the relative angle is displaced, and the other is formed in a flexible shape that can be deformed when the relative angle is displaced. ,
The joint of the first duct portion and the second duct portion is inclined obliquely with respect to the longitudinal axis of the duct, end seat structure portion of the duct portion of the rigid shape side of the first duct portion and a second duct portion The joints are shifted in the axial direction on both sides so as to protrude longer on the side closer to the side farther from the rotation axis of the sheet . air-conditioning system with a vehicle seat, characterized in that the cross-sectional area of the Moso duct portion is deformed so as not become narrow small. The vehicle seat with an air conditioner according to claim 1,
The vehicle seat with an air conditioner, wherein the deformable flexible duct portion has a bellows shape.

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