JP2024033228A - Vehicular seat - Google Patents

Abstract

To restrain air leakage caused by hole formation, etc. of a member forming a flow passage through which air flows.SOLUTION: A vehicular seat comprises a seat back frame, a seat back pad 22, a locking member 44, a support member 24, and a flow passage formation member 72. The support member 24 comprises a locked part 62A locked in the locking member 44, and a protruding part 66 protruding toward the side opposite to the seat back pad 22 from a portion adjacent to the locked part 62A. A protruding height H1 of the protruding part 66 with respect to the seat back pad 22 is set higher than a protruding height H2 of the locking member 44 with respect to the seat back pad 22. A portion of the flow passage formation member 72 is arranged along the protruding part 66.SELECTED DRAWING: Figure 5

Description

The present invention relates to a vehicle seat.

Patent Document 1 listed below discloses a seat equipped with a seat air conditioning device that can blow air toward the back of a human body seated on the seat. The seat described in this document includes a lumbar support that supports the lumbar region of a human body using a plate, and a ventilation duct through which air is blown toward the back of the human body seated on the seat.

Japanese Patent Application Publication No. 2010-29508

By the way, in a vehicle seat equipped with a mechanism for blowing air toward a seated occupant, from the viewpoint of mountability of the blowing mechanism on the vehicle seat, the member forming the flow path through which the air flows is made of polyurethane film. It is conceivable that it be made of a soft material such as. In this case, it is desirable to be able to suppress air leakage due to holes in the member forming the flow path through which air flows, but the configuration described in Patent Document 1 does not take this point into consideration.

The present invention has been made in consideration of the above facts, and an object of the present invention is to obtain a vehicle seat that can suppress air leakage due to holes in a member forming a flow path through which air flows.

The vehicle seat of the first aspect includes a seat back frame forming a frame of the seat back, a seat back pad attached to the seat back frame, a part of which is embedded in the seat back pad, and another part of which is embedded in the seat back pad. a locking member, a portion of which protrudes from the seat back pad; It has a locked part to be locked, and a protrusion protruding from a portion adjacent to the locked part toward a side opposite to the seat back pad, and the protrusion is attached to the seat back pad. A support member whose protrusion height is set higher than the protrusion height of the locking member relative to the seat back pad, and a flow path for air sucked from the seated passenger side or air flowing toward the seated passenger side. The flow path forming member is disposed along the support member and a portion of the flow path forming member is disposed along the protrusion.

In the vehicle seat of the first aspect, the support member is supported by the seat back frame, and the locked portion of the support member is locked by the locking member protruding from the seat back pad. Here, the support member includes a protrusion that protrudes from a portion adjacent to the locked portion toward a side opposite to the seat back pad. The protrusion height of this protrusion relative to the seat back pad is set higher than the protrusion height of the locking member relative to the seat back pad. As a result, the flow path forming member comes into contact with the protrusion, thereby suppressing contact between the flow path forming member and the locking member, and suppressing air leakage due to holes, etc. in the flow path forming member. can.

A vehicle seat according to a second aspect is the vehicle seat according to the first aspect, in which a surface of the protrusion that contacts the flow path forming member is formed in a planar shape.

According to the vehicle seat of the second aspect, the surface of the protrusion of the support member that contacts the flow path forming member is formed in a flat shape, so that the protrusion and the flow path forming member come into contact with each other. It is possible to prevent damage to the flow path forming member.

In the vehicle seat of the third aspect, in the vehicle seat of the first aspect or the second aspect, a plurality of the protrusions are provided so as to sandwich the locking member.

According to the vehicle seat of the third aspect, since a plurality of protrusions are provided so as to sandwich the locking member, contact between the flow path forming member and the locking member can be further suppressed.

A vehicle seat according to a fourth aspect is the vehicle seat according to any one of the first to third aspects, in which the thickness direction of the protrusion is a direction that intersects with the protrusion direction of the protrusion. It has plate-like ribs.

According to the vehicle seat of the fourth aspect, since the protrusion is a rib having the above-described configuration, it is possible to suppress an increase in the weight of the support member due to the provision of the protrusion.

A vehicle seat according to a fifth aspect is the vehicle seat according to any one of the first to fourth aspects, in which the support member includes a passage through which the flow path forming member passes in the front-rear direction of the seat. A hole is formed, and the locked portion and the protrusion are formed at the edge of the passage hole, and the flow path forming member is curved along the protrusion.

According to the vehicle seat of the fifth aspect, the flow path forming member passes through the passage hole of the support member and is curved along the protrusion. With this configuration, it is possible to suppress the portion of the flow path forming member that is curved along the protrusion from coming into contact with the locking member.

The vehicle seat according to the present invention has an excellent effect of suppressing air leakage caused by holes in a member forming a flow path through which air flows.

FIG. 1 is a side view showing the vehicle seat of the present embodiment. It is a perspective view showing a seat back. FIG. 3 is a perspective view of a cross section taken along line 3-3 shown in FIG. 2, viewed from the diagonally rear side of the seat. It is an enlarged perspective view which expands and shows the part locked by the locking member in a support member. FIG. 7 is an explanatory diagram for explaining a difference in height between a locking member and a protrusion.

The vehicle seat 10 of this embodiment will be explained using FIGS. 1 to 5.

FIG. 1 shows a side view of a vehicle seat 10 according to the present embodiment, viewed from the left side of the seat. In the figure, arrow FR indicates the front side of the seat, arrow UP indicates the upper side of the seat, arrow RH indicates the right side in the seat width direction, and arrow LH indicates the left side in the seat width direction. In addition, in the following description, when front and back, top and bottom, and left and right directions are used unless otherwise specified, they refer to front and back in the seat front and back direction, top and bottom in the seat up and down direction, and left and right in the seat width direction.

As shown in FIG. 1, the vehicle seat 10 includes a seat cushion 12 that supports the buttocks of a seated occupant from below, a seat back 14 that supports the back of the seated occupant from the rear side of the seat, and a head of the seated occupant. and a headrest 16 that supports the seat from the rear side of the seat. The vehicle seat 10 also includes a seat air conditioner 18 that blows air toward the back of the seated occupant.

As shown in FIGS. 2 and 3, the seat back 14 includes a seat back frame 20 that constitutes the frame of the seat back, a seat back pad 22 attached to the seat back frame 20, and a seat back pad 22 that is supported by the seat back frame 20. and a support member 24.

The seat back frame 20 includes a pair of left and right side frames 26 arranged at intervals in the left and right direction and extending in the vertical direction, an upper frame 28 that connects the upper ends of the pair of left and right side frames 26 in the left and right direction, and a pair of left and right side frames 26. A lower frame 30 connecting the lower end portions of the frame 26 in the left-right direction is provided. Further, the seat back frame 20 includes an intermediate frame 32 that connects the upper end sides of the pair of left and right side frames 26 in the left-right direction on the lower side of the upper frame 28. A pair of left and right support member supporting portions 34 to which a locking wire 60, which will be described later, is locked are formed on both left and right sides of the intermediate frame 32, respectively. Further, the seat back 14 includes a blower base 36 that vertically connects the center portion of the upper frame 28 in the left-right direction and the center portion of the intermediate frame 32 in the left-right direction.

The seat back pad 22 is formed using a resilient member such as urethane. The seat back pad 22 includes a main portion 38 arranged to face the back of a seated occupant in the front-rear direction, and a pair of left and right side support portions 40 that protrude forward from both left and right sides of the main portion 38, respectively. It is equipped with Note that a wire member 42 (see FIG. 3), which is formed by bending a bar-shaped metal into a predetermined shape, is embedded in the seat back pad 22. Further, the seat back pad 22 on the side of the seated occupant is covered with a skin material (not shown). Furthermore, a plurality of small openings are formed in the main portion 38 and the skin material to allow air from a flow path forming member 72 (described later) to flow toward the seated occupant.

As shown in FIG. 4, a locking member 44 is fixed to the seat back pad 22 on the side opposite to the seated occupant. This locking member 44 is a member called a hog ring formed by bending a rod-shaped metal into an annular shape, and is located at the center in the left-right direction at the rear of the seat back pad 22 and at a locked portion of the support member 24 described later. It is arranged in a part corresponding to 62A. A portion of the locking member 44 is embedded in the seat back pad 22, and another portion 44A of the locking member 44 protrudes rearward from the rear surface of the seat back pad 22. Although not shown, a wire member 42 (see FIG. 3) embedded in the seat back pad 22 is inserted into the locking member 44.

As shown in FIGS. 2 and 3, the support member 24 is a member called a lumbar support, and is arranged to face the back of the seated occupant in the front-rear direction via the seat back pad 22 and the like. The support member 24 includes a support member main body 46 formed in a substantially rectangular shape whose longitudinal direction is the vertical direction when viewed from the front side. The support member main body 46 is formed using a resin material, for example, and includes a first extending portion 48 extending in the vertical direction and the left-right direction, and a first extending portion 48 extending from the upper end of the first extending portion 48 toward the rear side. It includes a second extending portion 50 that extends in a bent manner, and a third extending portion 52 that extends in a bent manner upward from the rear end of the second extending portion 50 .

A passage hole 54 penetrating in the front-rear direction is formed in the center portion of the third extending portion 52 in the left-right direction on the second extending portion 50 side. The edge of the passage hole 54 is formed in a rectangular shape whose longitudinal direction is the left-right direction when viewed from the front side. A recessed hole 56 is formed in the center portion of the third extending portion 52 in the left-right direction, and the lower side of this recessed hole 56 is connected to the passage hole 54 .

Further, as shown in FIG. 3, the support member main body 46 includes a guide wall portion 58 formed to protrude from the lower edge of the passage hole 54 toward the rear side. A surface of this guide wall portion 58 on the side of a flow path forming member 72, which will be described later, is an inclined surface 58A that is inclined upward toward the rear side.

Further, as shown in FIG. 2 , the support member 24 includes locking wires 60 that are locked to the pair of left and right support member support portions 34 of the intermediate frame 32 . The locking wire 60 is formed, for example, by bending a bar-shaped metal into a predetermined shape, and includes a base portion 62 extending in the left-right direction, and a pair of left and right wires extending upward from both left and right ends of the base portion 62. A frame locking portion 64 is provided. The base portion 62 is fixed to the third extending portion 52 of the support member main body 46 by insert molding or the like. Further, the center portion of the base portion 62 in the left-right direction is a locked portion 62A that crosses the recessed hole 56 in the left-right direction. In other words, the center portion of the base portion 62 in the left-right direction is a locked portion 62A that spans both left and right edges of the recessed hole 56. As shown in FIG. 4, the locked portion 62A is inserted into the locking member 44 and is locked to the locking member 44. As shown in FIG. As shown in FIG. 1, the pair of left and right frame locking portions 64 are locked to the pair of left and right support member supporting portions 34 of the intermediate frame 32, respectively. Thereby, the upper part of the support member 24 is supported by the seat back frame 20. Note that the lower part of the support member 24 is also supported by the seat back frame 20.

Further, as shown in FIGS. 3 and 4, the support member main body 46 includes a plurality of protrusions that protrude from a portion adjacent to the locked portion 62A toward the opposite side (rear side) of the seat back pad 22. It is equipped with 66. As shown in FIG. 4, in this embodiment, two protrusions 66 are provided on the right side of the locked part 62A, and two protrusions 66 are provided on the left side of the locked part 62A. There is. That is, in this embodiment, the plurality of protrusions 66 are provided so as to sandwich the locking member 44 locked to the locked portion 62A from the left and right sides. In addition, the locked portion 62A and the plurality of protrusions 66 are provided along the upper edge of the passage hole 54. Furthermore, the protrusion 66 of this embodiment is configured to be integrally formed with a rib 68 formed on the support member main body 46. The rib 68 integrally formed with the protrusion 66 is formed into a plate shape whose thickness direction is in the left-right direction. Further, the portion from the rear surface 66A to the lower surface 66B of the protrusion 66 is formed in a planar shape.

Here, as shown in FIG. 5, the height of protrusion of the protrusion 66 toward the rear with respect to the seat back pad 22 is defined as H1. Further, the height of the locking member 44 protruding rearward from the seat back pad 22 is defined as H2. In the present embodiment, a height H1 in which the protrusion 66 protrudes rearward relative to the seat back pad 22 is set higher than a height H2 in which the locking member 44 protrudes rearward relative to the seat back pad 22. .

As shown in FIG. 1, the seat air conditioner 18 includes a blower 70 provided in the seat back 14, and a flow path forming member 72 for flowing air sucked from the back side of the seated occupant to the blower 70 side. It is composed of . As shown in FIGS. 1 and 2, the blower 70 is fixed to the rear side of the blower base 36. As shown in FIGS. Note that the seat air conditioner 18 of the present embodiment is configured to flow air sucked from the back side of the seated occupant toward the blower 70, but the structure of the present invention directs air from the blower 70 to the seated occupant. It can also be applied to seat air conditioners that flow to the back side.

As shown in FIGS. 2 and 3, the flow path forming member 72 is made of a soft material such as polyurethane film. The flow path forming member 72 includes a first flow path portion 74 formed in a rectangular cylindrical shape and a second flow path portion 76 communicating with the first flow path portion 74 . The upper end of the first flow path section 74 is connected to the blower 70 (see FIG. 1). Further, the vertical intermediate portion 74A of the first flow path portion 74 is gently curved forward toward the lower side and passes through the passage hole 54 of the support member main body 46 in the front-rear direction. Thereby, the lower end portion 74B of the first flow path portion 74 is disposed on the front side with respect to the support member main body 46. Here, as shown in FIG. 3, the front surface 74C of the intermediate portion 74A in the front-rear direction of the first flow path portion 74 is arranged along the rear surface 66A and lower surface 66B of the protrusion 66 of the support member main body 46. . Further, a rear surface 74D of the intermediate portion 74A in the front-rear direction of the first flow path portion 74 is arranged along the inclined surface 58A of the guide wall portion 58 of the support member main body 46.

As shown in FIG. 2, the second flow path portion 76 is arranged along the front surface of the first extension portion 48 of the support member main body 46. As shown in FIG. Air on the back side of the seated occupant flows into the second flow path portion 76 through openings formed in the main portion 38 of the seat back pad 22 and the skin material.

(Actions and effects of this embodiment)
Next, the operation and effects of this embodiment will be explained.

As shown in FIGS. 1 to 4, in the vehicle seat 10 of the present embodiment described above, the support member 24 is supported by the seat back frame 20, and the locked portion 62A of the support member 24 is It is locked by a locking member 44 protruding from the seat back pad 22. Here, the support member main body 46 of the support member 24 includes a plurality of protrusions 66 that protrude from a portion adjacent to the locked portion 62A toward the side opposite to the seat back pad 22. As shown in FIG. 5, a protrusion height H1 of the protrusion 66 relative to the seat back pad 22 is set higher than a protrusion height H2 of the locking member 44 relative to the seat back pad 22. As a result, the front surface 74C of the first flow path portion 74 of the flow path forming member 72 comes into contact with the protrusion 66, so that contact between the first flow path portion 74 and the locking member 44 can be suppressed. Air leakage due to holes in the first flow path portion 74 caused by the contact of the first flow path portion 74 with the locking member 44 can be suppressed.

Further, in this embodiment, as shown in FIG. 4, the surfaces of the plurality of protrusions 66 that contact the front surface 74C of the first flow path section 74 (the portion from the rear surface 66A to the lower surface 66B of the protrusions 66) are flat. It is formed in the shape of Thereby, damage to the first flow path portion 74 due to contact between the protrusion portion 66 and the first flow path portion 74 can be suppressed.

Furthermore, in this embodiment, the plurality of protrusions 66 are provided so as to sandwich the locking member 44 locked to the locked portion 62A from the left and right sides. Thereby, contact between the first flow path section 74 and the locking member 44 can be further suppressed.

Further, in this embodiment, the protrusion 66 is formed integrally with a rib 68 formed on the support member main body 46. This makes it possible to suppress an increase in the weight of the support member main body 46 compared to a configuration in which the ribs 68 and the protrusions 66 are provided separately.

Furthermore, in this embodiment, the vertically intermediate portion 74A of the first flow path portion 74 passes through the passage hole 54 of the support member main body 46 and is curved along the plurality of protrusions 66. With this configuration, it is possible to suppress the vertically intermediate portion 74A of the first flow path portion 74 from coming into contact with the locking member 44.

In addition, in this embodiment, the example in which the vertically intermediate portion 74A of the first flow path portion 74 of the flow path forming member 72 passes through the passage hole 54 of the support member main body 46 has been described. It is not limited to this. Whether or not to adopt such a configuration may be determined as appropriate in consideration of the mounting position of the blower 70 and the like.

Further, in this embodiment, an example has been described in which the protrusion 66 is formed integrally with the rib 68 formed on the support member main body 46, but the present invention is not limited to this. For example, in a configuration in which the rib 68 is not provided, only the protrusion 66 may be provided on the support member main body 46.

Further, in this embodiment, a configuration has been described in which a plurality of protrusions 66 are provided to sandwich the locking member 44 locked to the locked portion 62A from the left and right sides, but the present invention is not limited to this. The arrangement and number of the protrusions may be appropriately set in consideration of the shape of the flow path forming member 72, etc.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and can be implemented with various modifications other than the above without departing from the spirit thereof. Of course.

10 Vehicle seat 14 Seat back 20 Seat back frame 22 Seat back pad 24 Support member 44 Locking member 54 Passing hole 62A Locked portion 66 Protrusion 68 Rib 72 Channel forming member H1 Projection height of the protrusion relative to the seat back pad H2 Projection height of the locking member relative to the seat back pad

Claims (5)

A seat back frame that constitutes the backbone of the seat back,
a seat back pad attached to the seat back frame;
a locking member having a portion embedded in the seat back pad and another portion protruding from the seat back pad;
a locked portion that is supported by the seat back frame and is arranged to face the back of a seated occupant via the seat back pad, and that is locked to the locking member; a protrusion protruding from an adjacent portion toward a side opposite to the seat back pad, and a protrusion height of the protrusion relative to the seat back pad is a protrusion height of the locking member relative to the seat back pad. Support members set higher than the
A flow path forming member that forms a flow path for air sucked from the seated passenger side or air flowing toward the seated passenger side, and is disposed along the support member, and a portion thereof is disposed along the protrusion. ,
A vehicle seat equipped with The vehicle seat according to claim 1, wherein a surface of the protrusion that comes into contact with the flow path forming member is formed in a planar shape. 3. The vehicle seat according to claim 1, wherein a plurality of the protrusions are provided so as to sandwich the locking member. The vehicle seat according to any one of claims 1 to 3, wherein the protrusion is a plate-shaped rib whose thickness direction is in a direction intersecting the protrusion direction of the protrusion. The support member is formed with a passage hole through which the flow path forming member passes in the front-rear direction of the seat, and the locked portion and the protrusion are formed on an edge of the passage hole,
The vehicle seat according to any one of claims 1 to 4, wherein the flow path forming member is curved along the protrusion.