Vehicle seats

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

[Technical Field]

[0001] The present invention relates to a vehicle seat. [Background technology]

[0002] Patent Document 1 below discloses a seat equipped with a seat air conditioning unit that can blow air toward the back of a person seated in the seat. The seat described in this document is equipped with a lumbar support that supports the lower back of the person seated in the seat with a plate, and an air duct through which air flows that is blown toward the back of the person seated in the seat. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-29508 Summary of the Invention [Problem to be solved by the invention]

[0004] In a vehicle seat equipped with a mechanism for blowing air toward a seated occupant, it is considered to form the member forming the air flow path from a soft material such as a polyurethane film in view of the ease of mounting the mechanism on the vehicle seat. In this case, it is desirable to be able to suppress air leakage due to holes or the like in the member forming the air flow path, but the configuration described in the above-mentioned Patent Document 1 does not take this into consideration.

[0005] In consideration of the above, an object of the present invention is to provide a vehicle seat that can suppress air leakage due to holes or the like in members that form a flow path through which air flows. [Means for solving the problem]

[0006] The vehicle seat of the first embodiment comprises a seat back frame that forms the skeleton of the seat back, a seat back pad attached to the seat back frame, a locking member that is partially embedded in the seat back pad and partially protrudes from the seat back pad, a support member that is supported by the seat back frame and is arranged so as to face the back of the seated occupant via the seat back pad, and that has an engaged portion that is engaged with the locking member, and a protrusion that protrudes from a portion adjacent to the engaged portion toward the opposite side of the seat back pad, the protrusion having a height that protrudes from the seat back pad relative to the seat back pad that is set higher than the height that the locking member protrudes from the seat back pad, and a flow path forming member that forms a flow path for air sucked from the seated occupant side or air flowing toward the seated occupant side and is arranged along the support member, with a portion of the support member arranged along the protrusion.

[0007] In a first aspect of the vehicle seat, a support member is supported by a seat back frame, and a latched portion of the support member is latched to a latching member protruding from the seat back pad. Here, the support member has a protrusion that protrudes from a portion adjacent to the latched portion toward the opposite side of the seat back pad. The protrusion protrudes to a height higher than the latching member protrudes from the seat back pad. This allows the flow path forming member to come into contact with the protrusion, thereby preventing contact between the flow path forming member and the latching member and preventing air leakage due to holes in the flow path forming member, etc.

[0008] A vehicle seat according to a second aspect is the vehicle seat according to the first aspect, wherein the surface of the protrusion that comes into contact with the flow path forming member is formed in a flat shape.

[0009] According to the vehicle seat of the second aspect, the surface of the protrusion of the support member that comes into contact with the flow path forming member is formed flat, thereby preventing scratches on the flow path forming member due to contact between the protrusion and the flow path forming member.

[0010] A vehicle seat according to a third aspect is the vehicle seat according to the first or second aspect, wherein a plurality of the protrusions are provided so as to sandwich the locking member.

[0011] According to the vehicle seat of the third aspect, the plurality of protrusions are provided so as to sandwich the locking member, thereby making it possible to further suppress contact between the flow path forming member and the locking member.

[0012] A fourth aspect of the vehicle seat is a vehicle seat according to any one of the first to third aspects, wherein the protrusion is a plate-shaped rib whose thickness direction is a direction intersecting the protruding direction of the protrusion.

[0013] According to the vehicle seat of the fourth aspect, the protruding portion is a rib having the above-described configuration, so that an increase in the weight of the support member due to the provision of the protruding portion can be suppressed.

[0014] A fifth aspect of the vehicle seat is a vehicle seat of any one of the first to fourth aspects, wherein the support member is formed with a through hole through which the flow path forming member passes in the fore-and-aft direction of the seat, and the engaging portion and the protrusion portion are formed on the edge of the through hole, and the flow path forming member is curved along the protrusion portion.

[0015] According to the vehicle seat of the fifth aspect, the flow path forming member passes through the through hole of the support member and curves along the protrusion, and this configuration makes it possible to prevent the portion of the flow path forming member that curves along the protrusion from coming into contact with the locking member. [Effects of the Invention]

[0016] The vehicle seat according to the present invention has the excellent effect of being able to suppress air leakage due to holes or the like in members that form the air flow paths. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a side view showing a vehicle seat according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] 3 is a perspective view of a cross section taken along line 3-3 shown in FIG. 2, seen from an obliquely rearward side of the seat. [Figure 4] FIG. 10 is an enlarged perspective view showing a portion of the support member that is locked by the locking member. [Figure 5] 10 is an explanatory diagram for explaining the difference in height between the locking member and the protrusion. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] A vehicle seat 10 according to this embodiment will be described with reference to FIGS.

[0019] 1 shows a side view of a vehicle seat 10 of this embodiment as seen from the left side of the seat. In the drawing, the arrow FR indicates the front side of the seat, the arrow UP indicates the upper side of the seat, the arrow RH indicates the right side in the seat width direction, and the arrow LH indicates the left side in the seat width direction. In the following description, unless otherwise specified, when the terms "front-rear," "up-down," and "left-right" are used, they refer to the front-rear direction of the seat, the up-down direction of the seat, and the left-right direction in the seat width direction.

[0020] 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 headrest 16 that supports the head of the seated occupant from the rear side of the seat. The vehicle seat 10 also includes a seat air conditioning unit 18 that blows air toward the back of the seated occupant.

[0021] As shown in Figures 2 and 3, the seat back 14 includes a seat back frame 20 that forms the skeleton of the seat back, a seat back pad 22 attached to the seat back frame 20, and a support member 24 supported by the seat back frame 20.

[0022] The seatback frame 20 includes a pair of left and right side frames 26 that are spaced apart in the left-right direction and extend in the up-down direction, an upper frame 28 that connects the upper ends of the pair of left and right side frames 26 in the left-right direction, and a lower frame 30 that connects the lower ends of the pair of left and right side frames 26 in the left-right direction. The seatback frame 20 also includes an intermediate frame 32 that connects the upper ends of the pair of left and right side frames 26 in the left-right direction below the upper frame 28. A pair of left and right support member support portions 34 to which a locking wire 60, described below, is locked is formed on both left and right sides of the intermediate frame 32. The seatback 14 also includes a blower base 36 that connects the left-right center of the upper frame 28 and the left-right center of the intermediate frame 32 in the up-down direction.

[0023] The seatback pad 22 is formed using a resilient material such as urethane. The seatback pad 22 includes a main portion 38 disposed facing the back of the seated occupant in the front-rear direction, and a pair of left and right side support portions 40 protruding forward from both the left and right sides of the main portion 38. A wire member 42 (see FIG. 3) formed by bending a rod-shaped metal into a predetermined shape is embedded within the seatback pad 22. The seatback pad 22 on the seated occupant side is covered with a cover material (not shown). The main portion 38 and the cover material are further provided with a plurality of small openings for allowing air from a flow path forming member 72 (described later) to flow toward the seated occupant.

[0024] As shown in Fig. 4, a locking member 44 is fixed to the seatback pad 22 on the side opposite to the seated occupant. This locking member 44 is a member called a hog ring, which is formed by bending a metal rod into a ring shape, and is disposed in the left-right central portion of the rear portion of the seatback pad 22, at a portion corresponding to a locked portion 62A of a support member 24 (described later). A portion of the locking member 44 is embedded in the seatback pad 22, and another portion 44A of the locking member 44 protrudes rearward from the rear surface of the seatback pad 22. Although not shown, a wire member 42 (see Fig. 3) embedded in the seatback pad 22 is inserted inside the locking member 44.

[0025] 2 and 3, the support member 24 is a member called a lumbar support, and is disposed so as to face the back of the seated occupant in the front-rear direction via the seatback pad 22, etc. The support member 24 includes a support member main body 46 formed in a generally rectangular shape with the longitudinal direction extending in the up-down direction when viewed from the front. The support member main body 46 is formed, for example, using a resin material, and includes a first extending portion 48 extending in the up-down and left-right directions, a second extending portion 50 bending and extending rearward from the upper end of the first extending portion 48, and a third extending portion 52 bending and extending upward from the rear end of the second extending portion 50.

[0026] A through hole 54 penetrating in the front-rear direction is formed in the left-right center of the third extension portion 52 on the second extension portion 50 side. The edge of the through hole 54 is formed in a rectangular shape with its longitudinal direction extending in the left-right direction when viewed from the front. A recessed hole 56 is formed in the left-right center of the third extension portion 52, and the lower side of this recessed hole 56 is connected to the through hole 54.

[0027] 3, the support member main body 46 includes a guide wall portion 58 formed to protrude rearward from the lower edge of the passage hole 54. The surface of this guide wall portion 58 facing a flow path forming member 72 (described later) forms an inclined surface 58A that slopes upward toward the rear.

[0028] As shown in FIG. 2 , the support member 24 includes a locking wire 60 that is 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 metal rod into a predetermined shape. The locking wire 60 includes a base portion 62 extending in the left-right direction and a pair of left and right frame locking portions 64 extending upward from the left and right ends of the base portion 62. The base portion 62 is fixed to the third extension portion 52 of the support member main body 46 by insert molding or the like. The center of the base portion 62 in the left-right direction forms a locked portion 62A that crosses the recessed hole 56 in the left-right direction. In other words, the center of the base portion 62 in the left-right direction forms the 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 through the locking member 44 and locked to the locking member 44. 1, the pair of left and right frame locking portions 64 are respectively locked to the pair of left and right support member support portions 34 of the intermediate frame 32. As a result, the upper portion of the support member 24 is supported by the seat back frame 20. The lower portion of the support member 24 is also supported by the seat back frame 20.

[0029] As shown in FIGS. 3 and 4, the support member main body 46 includes a plurality of protrusions 66 that protrude from a portion adjacent to the locked portion 62A toward the opposite side (rear side) from the seat back pad 22. As shown in FIG. 4, in this embodiment, two protrusions 66 are provided on the right side of the locked portion 62A, and two protrusions 66 are provided on the left side of the locked portion 62A. 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. In addition, the locked portion 62A and the plurality of protrusions 66 are provided along the upper edge of the through hole 54. In this embodiment, the protrusions 66 are formed integrally with a rib 68 formed on the support member main body 46. The rib 68 formed integrally with the protrusions 66 is formed in a plate shape with its thickness extending in the left-right direction. Furthermore, the area from the rear surface 66A to the bottom surface 66B of the protrusion 66 is formed in a flat shape.

[0030] 5, the height H1 denotes the rearward protrusion of the protrusion 66 relative to the seat back pad 22. The height H2 denotes the rearward protrusion of the locking member 44 relative to the seat back pad 22. In this embodiment, the height H1 of the protrusion 66 relative to the seat back pad 22 is set to be higher than the height H2 of the locking member 44 relative to the seat back pad 22.

[0031] As shown in Fig. 1, the seat air-conditioning system 18 includes a blower 70 provided in the seat back 14 and a flow path forming member 72 for directing air drawn from the back of the seated occupant toward the blower 70. As shown in Figs. 1 and 2, the blower 70 is fixed to the rear side of the blower base 36. Note that while the seat air-conditioning system 18 of this embodiment is configured to direct air drawn from the back of the seated occupant toward the blower 70, the configuration of the present invention can also be applied to a type of seat air-conditioning system in which air from the blower 70 is directed toward the back of the seated occupant.

[0032] As shown in FIGS. 2 and 3, the flow path forming member 72 is formed of a soft material such as a 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 connected to the first flow path portion 74. The upper end of the first flow path portion 74 is connected to the blower 70 (see FIG. 1). The vertical middle portion 74A of the first flow path portion 74 is gently curved forward as it extends downward and passes through the through hole 54 of the support member main body 46 in the front-rear direction. As a result, the lower end portion 74B of the first flow path portion 74 is disposed on the front side of the support member main body 46. Here, as shown in FIG. 3, the front surface 74C of the vertical middle portion 74A of the first flow path portion 74 is disposed along the rear surface 66A and the lower surface 66B of the protrusion 66 of the support member main body 46. Furthermore, a rear surface 74D of the intermediate portion 74A in the front-rear direction of the first flow path portion 74 is disposed along the inclined surface 58A of the guide wall portion 58 of the support member main body .

[0033] 2, the second flow path portion 76 is disposed along the front surface of the first extension portion 48 of the support member main body 46. Air on the back side of the seated occupant flows into the second flow path portion 76 through the main portion 38 of the seatback pad 22 and openings formed in the upholstery material.

[0034] (Actions and Effects of This Embodiment) Next, the operation and effects of this embodiment will be described.

[0035] 1 to 4, in the vehicle seat 10 of the present embodiment described above, the support member 24 is supported by the seatback frame 20, and the locked portion 62A of the support member 24 is locked to the locking member 44 protruding from the seatback pad 22. The support member 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 opposite side of the seatback pad 22. As shown in FIG. 5, a protrusion height H1 of the protrusions 66 relative to the seatback pad 22 is set higher than a protrusion height H2 of the locking member 44 relative to the seatback pad 22. As a result, a front surface 74C of the first flow path portion 74 of the flow path forming member 72 comes into contact with the protrusions 66, thereby preventing contact between the first flow path portion 74 and the locking member 44 and preventing air leakage due to holes in the first flow path portion 74 caused by contact of the first flow path portion 74 with the locking member 44.

[0036] 4, in this embodiment, the surfaces of the multiple protrusions 66 that come into contact with the front surface 74C of the first flow path portion 74 (the portions from the rear surface 66A to the lower surface 66B of the protrusions 66) are formed flat. This makes it possible to prevent damage to the first flow path portion 74 due to contact between the protrusions 66 and the first flow path portion 74.

[0037] Furthermore, in this embodiment, the multiple protrusions 66 are configured to sandwich the locking member 44 locked to the locked portion 62A from the left and right, thereby further reducing contact between the first flow path portion 74 and the locking member 44.

[0038] Furthermore, in this embodiment, the protrusions 66 are configured to be formed integrally with the ribs 68 formed on the support member body 46. This makes it possible to suppress an increase in the weight of the support member body 46 compared to a configuration in which the ribs 68 and the protrusions 66 are provided separately.

[0039] Furthermore, in this embodiment, the vertical intermediate portion 74A of the first flow path portion 74 passes through the through hole 54 of the support member main body 46 and is curved along the multiple protrusions 66. With this configuration, it is possible to prevent the vertical intermediate portion 74A of the first flow path portion 74 from coming into contact with the locking member 44.

[0040] In the present embodiment, an example has been described in which the vertical intermediate portion 74A of the first flow path portion 74 of the flow path forming member 72 passes through the through hole 54 of the support member main body 46, but the present invention is not limited to this. Whether or not to adopt such a configuration can be determined appropriately in consideration of the mounting position of the blower 70, etc.

[0041] In addition, in the present embodiment, an example has been described in which the protrusions 66 are formed integrally with the ribs 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 ribs 68 are not provided, only the protrusions 66 may be provided on the support member main body 46.

[0042] Furthermore, in this embodiment, a configuration has been described in which multiple protrusions 66 are provided so as to sandwich the locking member 44 locked to the locked portion 62A from the left and right, but the present invention is not limited to this. The arrangement and number of the protrusions may be set appropriately taking into consideration the shape of the flow path forming member 72, etc.

[0043] The above describes one embodiment of the present invention, but the present invention is not limited to the above, and it goes without saying that it can be implemented in various other modified forms within the scope of the gist of the present invention. [Explanation of symbols]

[0044] 10 Vehicle seats 14 Seat back 20 Seat back frame 22 Seat back pad 24 Support member 44 Locking member 54 Passing hole 62A Locked part 66 Protrusion 68 Ribs 72 Flow path forming member H1 Protrusion height relative to the seat back pad H2: Protruding height of the locking member relative to the seat back pad

Claims

1. A seat back frame that forms the framework 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 support member supported by the seat back frame and disposed so as to face the back of the seated occupant across the seat back pad, the support member having an engaged portion engaged with the engaging member and a protruding portion protruding from a portion adjacent to the engaged portion toward the opposite side of the seat back pad, the protruding height of the protruding portion relative to the seat back pad being set higher than the protruding height of the engaging member relative to the seat back pad; a flow path forming member that forms a flow path for air sucked from the seated occupant side or air flowing toward the seated occupant side and is arranged along the support member, with a portion of the flow path forming member being arranged along the protrusion; A vehicle seat comprising:

2. The vehicle seat according to claim 1 , wherein the surface of the protrusion that comes into contact with the flow path forming member is formed in a flat shape.

3. 3. The vehicle seat according to claim 1, wherein a plurality of the protrusions are provided so as to sandwich the locking member.

4. 3. The vehicle seat according to claim 1, wherein the protrusion is a plate-like rib having a thickness direction that intersects with the protruding direction of the protrusion.

5. a passage hole through which the flow path forming member passes in the seat front-rear direction is formed in the support member, and the engaged portion and the protrusion are formed on an edge portion of the passage hole, 3. The vehicle seat according to claim 1, wherein the flow path forming member is curved along the protrusion.

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