JP7244731B2 - vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat comprising a seat cushion and a seat back.

2. Description of the Related Art Conventionally, there is known a vehicle seat configured to send conditioned air to a seat cushion or a seat back (Patent Document 1). In this vehicle seat, the seat cushion and the pad of the seat back are formed with an air passage and an air outlet, and the conditioned air is sent from a blower attached to the bottom surface of the seat cushion to the air passage of the pad through a duct. .

JP 2009-023477 A

By the way, in the conventional technology, when the occupant moves the seat by reclining or the like, there is a possibility that the connecting portion of the duct is displaced from the pad.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vehicle seat that can prevent the duct from being displaced from the pad.
Another object of the present invention is to facilitate attachment of the duct to the pad.
Another object of the present invention is to suppress leakage of air from the pad.
Another object of the present invention is to stabilize ventilation inside the duct.
Another object of the present invention is to suppress the impact on the flexibility of the pad.

To achieve the above object, a vehicle seat according to the present invention comprises a pad having an air blower, an air passage formed therein and a hole communicating with the air passage; A duct connecting the passages and a retaining member connected to the duct.
The duct has a first tubular portion that fits into the hole in the pad and a first flange that expands from the first tubular portion. The holding member has a second tubular portion connected to the first tubular portion, and a second flange having an enlarged diameter from the second tubular portion. The first flange and the second flange sandwich the pad.

According to such a configuration, the duct is stably connected to the pad by sandwiching the pad between the first flange and the second flange. Therefore, it is possible to suppress the displacement of the connecting portion of the duct with respect to the pad. Moreover, since the duct and the holding member are separate members, the duct can be easily attached to the pad.

In the vehicle seat described above, the first flange may have an inclined surface that is inclined with respect to the first tubular portion.

According to this, the inclined surface is pressed against the pad when the duct is attached to the pad. As a result, a portion of the pad is locally crushed to eliminate the gap between the pad and the duct, thereby suppressing air leakage.

In the vehicle seat described above, the first tubular portion and the second tubular portion may overlap between the first flange and the second flange.

According to this, since the strength of the overlapped portion is increased, ventilation is stabilized.

In the vehicle seat described above, the first cylindrical portion may have a constant cross-sectional shape.

According to this, ventilation inside the first cylindrical portion is stabilized.

In the vehicle seat described above, the first tubular portion may be configured to contact the inner surface of the hole of the pad.

According to this, it is possible to suppress leakage of air from the connecting portion between the pad and the duct.

In the vehicle seat described above, the first flange may be configured to have a hollow opening toward the inside of the duct.

According to this, the periphery of the cavity of the duct can be easily bent. Thereby, it is possible to suppress the influence on the flexibility of the pad.

In the vehicle seat described above, the holding member further has a third flange that is enlarged in diameter from the second tubular portion at a position different from the second flange, and the third flange enters the cavity of the first flange. It is good also as a structure with.

According to this, it is possible to prevent the holding member from slipping out of the duct.

In the vehicle seat described above, the duct may have an expandable bellows portion, and the bellows portion may include the first flange.

According to this, since the duct can expand and contract, it is possible to suppress an influence on the flexibility of the pad.

ADVANTAGE OF THE INVENTION According to this invention, it can suppress that the duct of a vehicle seat slip|deviates from a pad. Moreover, since the duct and the holding member are separate members, the duct can be easily attached to the pad.

Moreover, since the first flange has an inclined surface that is inclined with respect to the first cylindrical portion, air leakage can be suppressed when the duct is attached to the pad.

Further, since the first tubular portion and the second tubular portion are overlapped between the first flange and the second flange, the strength of the overlapped portion is increased, thereby stabilizing ventilation.

In addition, since the first tubular portion has a constant cross-sectional shape, ventilation inside the first tubular portion is stabilized.

In addition, since the first cylindrical portion is in contact with the inner surface of the hole in the pad, it is possible to suppress air leakage from the connecting portion between the pad and the duct.

Moreover, since the first flange has a cavity that opens toward the inside of the duct, the periphery of the cavity of the duct can be easily bent. Thereby, it is possible to suppress the influence on the flexibility of the pad.

In addition, the holding member further has a third flange whose diameter is enlarged from the second tubular portion at a position different from the second flange, and the third flange enters the cavity of the first flange, so that the holding member It can be suppressed that it comes out of the duct.

In addition, since the duct has an expandable bellows portion and the bellows portion includes the first flange, the duct can be expanded and contracted. can be suppressed.

It is a figure showing a vehicle seat concerning an embodiment. 1 is a cross-sectional view of a vehicle seat; FIG. It is a perspective view of a seat frame. It is a figure which shows the connection of a 1st duct to a 4th duct. FIG. 4 is an exploded perspective view of a third duct and a holding member; It is sectional drawing (a) before connecting a 3rd duct to a pad, and sectional drawing (b) after connection. FIG. 10 is a cross-sectional view after connecting the fourth duct to the pad; FIG. 11 is a cross-sectional view of a connecting portion of a duct in a first modified example; FIG. 11 is a cross-sectional view of a connecting portion of a duct in a second modified example; FIG. 11 is a cross-sectional view of a connecting portion of a duct in a third modified example;

An embodiment of the invention will be described below with reference to the accompanying drawings. In this specification, the front, rear, left, right, and top and bottom are based on the front, back, left, right, and top and bottom as seen from the person sitting on the seat.
As shown in FIG. 1, a vehicle seat S of this embodiment is configured as a seat mounted in an automobile, and includes a seat cushion S1 and a seat back S2.

As shown in FIG. 2, the vehicle seat S is constructed by covering a seat frame F with a pad P made of urethane foam or the like and covers U1 and U2 made of cloth or leather.

The pad P includes a seat cushion pad P1 forming the pad of the seat cushion S1 and a seat back pad P2 forming the pad of the seat back S2.

The seat cushion pad P1 has a ventilation path A1, a plurality of ventilation holes H1, and a hole B1. The ventilation path A1 is formed inside the seat cushion pad P1. A plurality of ventilation holes H1 are opened in the upper surface of the seat cushion pad P1 and communicate with the ventilation path A1. The hole B1 opens in the lower surface of the seat cushion pad P1 and communicates with the ventilation path A1. The seat cushion pad P1 is formed by combining a pad main body P11 forming part of the surface of the air passage A1 and a cover pad P12 attached to the pad main body P11. Before the cover pad P12 is assembled to the pad main body P11, the pad main body P11 has an exposed portion where the hole B1 of the ventilation path A1 is connected. In this embodiment, the ventilation hole H1 is formed in the cover pad P12. The cover pad P12 may be detachable with respect to the pad body P11.

The seat back pad P2 has an air passage A2, a plurality of air holes H2, and holes B2. The air passage A2 is formed inside the seat back pad P2. A plurality of ventilation holes H2 are opened in the front surface of the seat back pad P2 and communicate with the ventilation path A2. The hole B2 opens in the rear surface of the seat back pad P2 and communicates with the air passage A2. The seat back pad P2 is formed by combining a pad main body P21 forming part of the surface of the air passage A2 and a cover pad P22 attached to the pad main body P21. Before the cover pad P22 is attached to the pad main body P21, the pad main body P21 has an exposed portion where the hole B2 of the ventilation path A2 is connected. In this embodiment, the ventilation hole H2 is formed in the cover pad P22. The cover pad P22 may be detachable from the pad body P21.

The ventilation paths A1 and A2 are connected to the blower device 70 via the duct 100. As shown in FIG. Specifically, the duct 100 has one end connected to the air blower 70 and the other end connected to the holes B1 and B2 of the pad P, thereby connecting the air blower 70 and the ventilation paths A1 and A2 of the pad P. . The air blower 70 is a sirocco fan and is arranged below the seat cushion S1. The vehicle seat S is configured to blow air blown from the air blower 70 through the duct 100, the holes B1, B2, and the air passages A1, A2 from the air holes H1, H2 toward the occupant sitting on the seat. ing.

As shown in FIG. 3, the seat frame F includes a seat cushion frame F1 forming the frame of the seat cushion S1 and a seat back frame F2 forming the frame of the seat back S2.

The seat cushion frame F1 includes a pair of side frames 11, a pan frame 12, a rear pipe 13, and a front pipe 14 (see FIG. 2). The pair of side frames 11 are members constituting left and right frames of the seat cushion S1, and are arranged to be separated from each other while facing each other in the left-right direction. The side frame 11 is made of sheet metal and formed in an elongated shape that is long in the front-rear direction.

The rear pipe 13 and the front pipe 14 connect the pair of side frames 11 . Specifically, the rear pipe 13 connects the rear portions of the pair of side frames 11 together, and the front pipe 14 connects the front portions of the pair of side frames 11 together. The rear pipe 13 and the front pipe 14 are examples of connecting members that connect the pair of side frames.

The seatback frame F<b>2 includes left and right sheet metal frames 22 , pipe frames 23 , lower frames 24 , and bridge frames 25 . The left and right sheet metal frames 22 are spaced apart while facing each other in the left-right direction. The sheet metal frame 22 is made of sheet metal, and is formed in a vertically elongated shape.

The pipe frame 23 is made of a metal pipe material, and has left and right upper side frames 23A that extend substantially vertically, and an upper frame 23B that connects the upper ends of the upper side frames 23A. The left and right upper side frames 23A are connected at their lower portions to the upper portions of the sheet metal frames 22, thereby forming, together with the left and right sheet metal frames 22, a pair of side frames 21 that constitute the left and right frames of the seatback S2. . The lower frame 24 is made of sheet metal and connects the lower portions of the pair of side frames 21 to each other. The bridging frame 25 is made of sheet metal and connects the upper portions of the pair of side frames 21 to each other. The lower frame 24, the bridging frame 25 and the upper frame 23B are examples of connecting members that connect the pair of side frames 21 together.

The rear portion of the side frame 11 and the lower portion of the side frame 21 are rotatably connected via a reclining mechanism RL. Accordingly, in the vehicle seat S, the seat back S2 can be rotated back and forth with respect to the seat cushion S1.

As shown in FIG. 4, the duct 100 is composed of multiple parts. Specifically, the duct 100 has a first duct 110 , a second duct 120 , a third duct 130 and a fourth duct 140 .

The first duct 110 has a body portion 111 that extends substantially forward and backward, a first connection portion 112 that is arranged at the rear end of the body portion 111, and a fifth connection portion 113 that is arranged at the front portion of the body portion 111. are doing. The body portion 111 has a front end portion connected to the blower device 70 .

The second duct 120 has a vertically extending accordion portion 122 , a second connection portion 121 provided below the accordion portion 122 , and a third connection portion 123 provided above the accordion portion 122 . . The bellows portion 122 is flexible and stretchable. The second connecting portion 121 is sized to fit outside the first connecting portion 112 of the first duct 110 . The second connecting portion 121 of the second duct 120 is connected to the first connecting portion 112 of the first duct 110 .

As shown in FIG. 2, the second duct 120 is arranged so as to pass through the rear pipe 13 and the front side of the lower frame 24 from the seat cushion S1 toward the seat back S2.

As shown in FIG. 4, the third duct 130 includes a main body portion 132 extending vertically, a fourth connecting portion 131 provided under the main body portion 132, and a first tubular shape provided above the main body portion 132. and a portion 133 .
An upper portion of the body portion 132 is bent forward. A first flange 134 is provided between the body portion 132 and the first cylindrical portion 133 .

As shown in FIG. 6( a ), the first flange 134 expands in diameter from the first tubular portion 133 and the body portion 132 . Specifically, the first flange 134 extends radially outward from the rear end of the first cylindrical portion 133 and then narrows to connect with the body portion 132 . As a result, the first flange 134 has a cavity 134</b>A that opens toward the interior of the duct 100 . Cavity 134A extends over the entire circumference of third duct 130 . Also, the first flange 134 has an inclined surface 134</b>B that is inclined with respect to the first tubular portion 133 .

As shown in FIG. 4 , the fourth connecting portion 131 is sized to fit inside the third connecting portion 123 of the second duct 120 . The fourth connection portion 131 is connected to the third connection portion 123 of the second duct 120 .
The first tubular portion 133 has a constant cross-sectional shape, as shown in FIG. The first tubular portion 133 is connected to a hole B2 formed in the seat back pad P2, and as described later, is held by a holding member 150 connected to the tip so as not to come off the seat back pad P2. be.

As shown in FIG. 4 , the fourth duct 140 includes a vertically extending bellows portion 142 , a sixth connection portion 141 provided below the bellows portion 142 , and a first tubular portion provided above the bellows portion 142 . and a portion 143 . The bellows portion 142 is flexible and expandable. The sixth connection portion 141 is sized to fit outside the fifth connection portion 113 of the first duct 110 . The sixth connection portion 141 is connected to the fifth connection portion 113 of the first duct 110 .
The first tubular portion 143 has a constant cross-sectional shape. The first tubular portion 143 is connected to a hole B1 formed in the seat cushion pad P1. Then, similarly to the first cylindrical portion 133 of the third duct 130, the holding member 150 is connected to the leading end of the third duct 130, so that the third duct 130 is held so as not to come off from the seat cushion pad P1.

As shown in FIG. 7, the uppermost pleat of the bellows portion 142 expands in diameter from the first tubular portion 143 . That is, the uppermost pleat of the bellows portion 142 forms a first flange 144 equivalent to the first flange 134 of the third duct 130 . In other words, the bellows portion 142 includes a first flange 144 . The first flange 144 has a cavity 144A that opens into the duct 100 and an inclined surface 144B that is inclined with respect to the first tubular portion 143 .

As shown in FIG. 6( a ), the holding member 150 has a second cylindrical portion 151 , a second flange 152 and a third flange 153 .

The second flange 152 expands in diameter from one end of the second tubular portion 151 . The second flange 152 has a plate shape.
The third flange 153 expands in diameter from the other end of the second tubular portion 151 , that is, from a position different from the second flange 152 . The third flange 153 obliquely expands in diameter from the second cylindrical portion 151 so as to gradually expand radially outward as it separates from the second flange 152 . A diameter expansion amount K2 of the third flange 153 (the amount of radial expansion from the second cylindrical portion 151) is smaller than a diameter expansion amount K1 of the second flange 152. As shown in FIG.

The second tubular portion 151 is connected to the first tubular portion 133 . The second tubular portion 151 is formed to be one size smaller than the first tubular portion 133 so as to be inserted inside the first tubular portion 133, and has a constant cross-sectional shape (see FIG. 5). The length L2 of the second tubular portion 151 is greater than the length L1 of the first tubular portion 133 . Also, the length L2 of the second tubular portion 151 (the distance between the second flange 152 and the third flange 153) is smaller than the length L3 of the hole B2 (thickness of the seat back pad P2).

When attaching the third duct 130 to the seat back pad P2, the cover pad P22 is not attached to the pad main body P21, and the portion where the hole B2 of the air passage A2 is connected is exposed (see FIG. 2). After inserting the first tubular portion 133 of the third duct 130 into the hole B2, the second tubular portion 151 of the holding member 150 is inserted inside the first tubular portion 133 . At this time, the third flange 153 of the holding member 150 is flexed so that the third flange 153 and the second tubular portion 151 are inserted inside the first tubular portion 133, and the third flange 153 is inserted into the cavity 134A. Let The holding member 150 is thus fixed to the third duct 130 . Finally, the cover pad P22 is attached to the pad body P21.

As shown in FIG. 6(b), when the third duct 130 is attached to the seat back pad P2, the first tubular portion 133 enters the hole B2 and contacts the inner surface of the hole B2. Also, the first tubular portion 133 and the second tubular portion 151 overlap between the first flange 134 and the second flange 152 . Also, the third flange 153 enters the cavity 134A and engages the inner surface of the first flange 134 . In addition, since the tip of the third flange 153 is positioned radially outside of the hole B2 and the first tubular portion 133, the force in the direction in which the holding member 150 is removed from the third duct 130 is applied to the holding member 150 or Even if it joins the third duct 130 , the third flange 153 is hooked on the first flange 134 , so that the holding member 150 cannot easily come off.

In this state in which the third duct 130 is held by the holding member 150 on the seat back pad P2, the first flange 134 and the second flange 152 are positioned outside the hole B2 of the seat back pad P2, It sandwiches P2. At this time, the inclined surface 134B presses the rear surface D2 of the seat back pad P2, and the second flange 152 presses the front surface (the surface within the air passage A2) E2 of the seat back pad P2.

The configuration for attaching the fourth duct 140 to the seat cushion pad P1, the attachment method, and the action after attachment are the same as those for attaching the third duct 130 to the seat back pad P2, so description thereof will be omitted.

According to the above, the following effects can be obtained in this embodiment.
According to the vehicle seat S of the present embodiment, the pad P is sandwiched between the first flange 134 and the second flange 152, so that the first tubular portion 133 of the duct 100 can be prevented from being displaced.

Also, if the holding member 150 were integral with the duct 100, it would be difficult to pass the second flange 152 through the hole B2. , the holding member 150 can be attached from the opposite side of the seat back pad P2 to the duct 100, and the second flange 152 need not be passed through the hole B2. Therefore, it is easy to attach the duct 100 to the pad P.

Further, since the first flange 134 has an inclined surface 134B that is inclined with respect to the first tubular portion 133, when the first tubular portion 133 of the duct 100 is attached to the pad P, the inclined surface 134B is pressed against pad P. As a result, a portion of the pad P is locally crushed to eliminate the gap between the pad P and the duct 100, thereby suppressing air leakage.

Moreover, since the first tubular portion 133 and the second tubular portion 151 overlap between the first flange 134 and the second flange 152, the strength of the overlapped portion is increased. Therefore, deformation of the first tubular portion 133 and the second tubular portion 151 in the hole B1 of the pad P can be suppressed, so that ventilation is stabilized.

In addition, since the first cylindrical portions 133 and 143 have a constant cross-sectional shape, the air flow inside the first cylindrical portions 133 and 143 is not hindered. Therefore, ventilation inside the first tubular portions 133 and 143 is stabilized.

Further, since the first cylindrical portions 133, 143 are in contact with the inner surfaces of the holes B1, B2 of the pad P, air leakage from the connecting portions between the pad P and the ducts 130, 140 can be suppressed.

In addition, since the first flanges 134, 144 have cavities 134A, 144A that open toward the inside of the duct 100, the duct 100 can easily bend around the cavities 134A, 144A. As a result, it is possible to suppress the flexibility of the pad P from being affected. .

In addition, since the third flange 153 of the holding member 150 enters the cavities 134A and 144A, it is possible to prevent the holding member 150 from slipping out of the duct 100.

Further, in the fourth duct 140, the bellows portion 142 includes the first flange 144, so that the periphery of the first flange 144 is easily bent. As a result, it is possible to suppress the flexibility of the pad P from being affected.

Although one embodiment of the invention has been described above, the invention is not limited to the embodiment. The specific configuration can be changed as appropriate without departing from the spirit of the invention as described below. In the following description, the same reference numerals are given to the same configurations as in the above embodiment, and the description thereof will be omitted as appropriate, and the points different from the above embodiment will be described in detail.

In the embodiment described above, the first flange has a cavity that opens toward the inside of the duct, but the first flange may not have a cavity. Also, although the holding member has the third flange, the third flange can be omitted.
For example, the third duct 230 of the first modified example shown in FIG. 8 has a first tubular portion 233 and a first flange 234 . The first flange 234 has a plate-like shape and has a diameter enlarged from the first cylindrical portion 233 . The holding member 250 has a second tubular portion 251 and a second flange 252 . The first tubular portion 233 and the second tubular portion 251 are fixed by bonding with an adhesive, for example. Also in this form, it is preferable to fix the first tubular portion 233 and the second tubular portion 251 so that the pad P is sandwiched between the first flange 234 and the second flange 252 . Thereby, the duct 200 is stably held by the pad P.

In the above-described embodiment, the holding member was fitted inside the duct, but the holding member may be fitted outside the duct. For example, in a second modified example shown in FIG. 9, the holding member 350 is fitted outside the third duct 330 . The third duct 330 has a first tubular portion 333 , a plate-shaped first flange 334 and a third flange 335 . The first tubular portion 333 is one size smaller than the second tubular portion 351 of the holding member 350 so that the third duct 330 enters inside the holding member 350 . The third flange 335 expands in diameter from the tip of the first tubular portion 333 .
In this embodiment, the holding member 350 is first inserted into the hole B2 of the seat back pad P2, and then the first cylindrical portion 333 of the third duct 330 is inserted into the holding member 350 to move the third duct. Install 330. By engaging the third flange 335 with the second flange 352 of the holding member 350, the third duct 330 is stably held.

In the above-described embodiment, the third flange of the holding member enters the cavity of the first flange and engages the first flange, but the portion of the holding member other than the flange engages a portion of the duct. good too. For example, in the third modification shown in FIG. 10, the holding member 550 has a second tubular portion 551, a second flange 552, and a claw portion 553. As shown in FIG. The claw portion 553 is arranged to protrude outward from the second tubular portion 551 . The claw portion 553 engages with an engagement hole 533E formed in the first cylindrical portion 533. As shown in FIG. Thereby, the holding member 550 is connected (fixed) to the duct 500 so as not to come off.

Further, in the above-described embodiment, the sirocco fan was exemplified as the air blower 70, but the present invention is not limited to this, and may be a propeller fan, a turbo fan, or the like. Further, in the above-described embodiment, the vehicle seat S is configured to blow air from the ventilation holes H1 and H2, but the present invention is not limited to this. good.

Further, in the above-described embodiment, the air passages connected to the blower by the ducts are formed in both the seat cushion and the seat back. It may be a formed configuration.

In the above-described embodiment, the vehicle seat S mounted in an automobile was exemplified as the vehicle seat, but the present invention is not limited to this, and a seat mounted in a vehicle other than an automobile, such as a railroad vehicle, a ship, an aircraft, or the like. may be

Also, the elements described in the above-described embodiment and modification may be arbitrarily combined and implemented.

70 Blower device 100 Duct 133 First tubular portion 134 First flange 134A Cavity 134B Inclined surface 150 Holding member 151 Second tubular portion 152 Second flange 153 Third flange A1 Air passage A2 Air passage B1 Hole B2 Hole P Pad P1 Seat cushion pad P2 Seat back pad S Vehicle seat S1 Seat cushion S2 Seat back

Claims (7)

a blower;
a pad having an air passage formed therein and a hole communicating with the air passage;
a duct connected to the hole and connecting the air blower and the air passage;
a holding member connected to the duct,
The duct has a first tubular portion that enters the hole and a first flange that is enlarged in diameter from the first tubular portion,
The holding member has a second tubular portion connected to the first tubular portion, and a second flange having a diameter enlarged from the second tubular portion,
The first flange and the second flange sandwich the pad ,
The vehicle seat, wherein the first cylindrical portion is in contact with the inner surface of the hole. a blower;
a pad having an air passage formed therein and a hole communicating with the air passage;
a duct connected to the hole and connecting the air blower and the air passage;
a holding member connected to the duct,
The duct has a first tubular portion that enters the hole and a first flange that is enlarged in diameter from the first tubular portion,
The holding member has a second tubular portion connected to the first tubular portion and a second flange having a diameter enlarged from the second tubular portion,
The first flange and the second flange sandwich the pad ,
the first flange has a cavity opening into the duct;
The holding member further has a third flange having a diameter enlarged from the second cylindrical portion at a position different from the second flange,
A vehicle seat, wherein said third flange extends into said cavity. a blower;
a pad having an air passage formed therein and a hole communicating with the air passage;
a duct connected to the hole and connecting the air blower and the air passage;
a holding member connected to the duct,
The duct has a first tubular portion that enters the hole and a first flange that is enlarged in diameter from the first tubular portion,
The holding member has a second tubular portion connected to the first tubular portion, and a second flange having a diameter enlarged from the second tubular portion,
The first flange and the second flange sandwich the pad ,
A vehicle seat , wherein a part of the pad is pressed against the first flange and the second flange, and is crushed in the penetration direction of the hole. The vehicle seat according to any one of claims 1 to 3, wherein the first flange has an inclined surface that is inclined with respect to the first tubular portion. 5. The method according to any one of claims 1 to 4, wherein the first tubular portion and the second tubular portion overlap between the first flange and the second flange. vehicle seat. The vehicle seat according to any one of claims 1 to 5 , wherein the first tubular portion has a constant cross-sectional shape. The duct has an extendable bellows part,
The vehicle seat according to any one of claims 1 to 6 , wherein the bellows portion includes the first flange.

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