Vehicle seat structure

Abstract

To provide a seat structure for a vehicle which can restrain a load from concentrating to an article or the like when the article or the like come into contact with a ventilation part while avoiding exposure of the ventilation part to a cabin.SOLUTION: A seat 1 for a vehicle comprises a seat back cushion 32 which forms seating face, a blower fan 34 which adjusts peripheral air of the seating face, a seat back cover 33 which covers the seat back cushion 32, and wire harnesses 51, 52 which have flexibility and are connected to the blower fan 34 or an air bag device 71. The seat back cover 33 contains a ventilation part 331 which communicates with the blower fan 34, has ventilation characteristics, and is formed in a position covering a portion different from the seating face of the seat back cushion 32 and a covered part 332 which is formed in a position covering the ventilation part 331 from the seat outside. The wire harnesses 51, 52 are wired in a position which overlaps with the ventilation part 331 at the seat inside with respect to the covered part 332.SELECTED DRAWING: Figure 2

Description

Technical Field

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

Background Art

[0002] Conventionally, seats used in vehicles such as automobiles are known to have an air-conditioning function capable of adjusting the air around the seating surface of the seat portion and the seat back. In a vehicle seat with an air-conditioning function, a ventilation portion (vent hole) is provided in a cushion material forming a seating surface, and a blower device (fan) is provided at a position communicating with the ventilation portion. For example, Patent Document 1 discloses a vehicle seat having a rear seat face air outlet provided on the back surface of the seat back on the front seat side. In this vehicle seat, the rear seat face air outlet communicates with a rear air passage through which conditioned air from an in-vehicle air-conditioning unit is introduced, and the blowing direction of the conditioned air to the rear seat side can be adjusted by an up-down adjustment louver provided at the rear seat face air outlet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, with respect to the conventional vehicle seat structure as described above, if a ventilation portion such as a rear seat face air outlet is provided on the back surface of the seat back on the front seat side, the ventilation portion is exposed in the vehicle interior and enters the field of view of the rear seat occupants, which may impair the appearance of the vehicle seat and, consequently, the aesthetics of the vehicle interior. Further, when the ventilation portion is installed while being exposed in the vehicle interior, it is necessary to consider so that a load does not concentrate on articles or the like when the articles come into contact with the ventilation portion.

[0005] The present invention has been made by paying attention to the above points, and an object thereof is to provide a vehicle seat structure that can suppress the concentration of load on an article or the like when the article or the like comes into contact with a ventilation portion while avoiding the exposure of the ventilation portion into the vehicle interior.

Means for Solving the Problems

[0006] To achieve the above object, one aspect of a vehicle seat structure according to the present invention includes a cushion material forming a seat surface, a blower for adjusting the ambient air of the seat surface, and a seat cover covering the cushion material 、 and provides a vehicle seat structure. In this vehicle seat structure, the seat cover includes a breathable ventilation portion formed at a position communicating with the blower and covering a portion different from the seat surface of the cushion material, and a covering portion formed at a position covering the ventilation portion from the outside of the seat. is doing

Effects of the Invention

[0007] According to one aspect of the vehicle seat structure according to the present invention, by providing a ventilation portion in the seat cover and covering the ventilation portion from the outside of the seat with the covering portion, it is possible to avoid the exposure of the ventilation portion into the vehicle interior and suppress the concentration of load on an article or the like when the article or the like comes into contact with the ventilation portion. 。

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0009] Hereinafter, a vehicle seat structure according to an embodiment of the present invention will be described with reference to the drawings (FIGS. 1 to 5). In the drawings, the direction of arrow Fr indicates the front in the front-rear direction of the vehicle seat. The "front part (front end) and rear part (rear end)" in the description of the embodiment correspond to the front part and rear part in the front-rear direction of the seat. Also, the front in the front-rear direction of the seat in the present embodiment corresponds to the front in the front-rear direction of the vehicle. The directions of arrow R and arrow L indicate the right side and left side when the occupant is seated on the vehicle seat. The direction of arrow U indicates upward.

[0010] FIG. 1 is a perspective view showing the appearance of a vehicle seat 1 to which the structure according to the present embodiment is applied. FIG. 2 is a rear view of the vehicle seat 1 in FIG. 1. In FIG. 2, the state where the headrest 35 of the vehicle seat 1 is removed and the covering portion 332 of the seat back cover 33 is rolled up to the upper side behind the seat is shown. When the vehicle seat 1 is in use, as shown by the two-dot chain line in FIG. 2, the covering portion 332 is in a state of covering the front side below the seat.

[0011] In FIGS. 1 and 2, the vehicle seat 1 includes a seat portion 10 and a seat back 30. The seat portion 10 is the portion where the occupant sits. The seat portion 10 has a seat frame 11, a seat cushion 12 that forms a seating surface, and a seat cover 13 that covers the seat cushion 12.

[0012] The seat back 30 is a portion that extends upward from the rear part of the seat portion 10 and is configured to support, in particular, the upper body of an occupant sitting on the seat portion 10. The seat back 30 includes a seat back frame 31 (FIG. 4 described later), a seat back cushion 32 that forms a seating surface, a seat back cover 33 that covers the seat back cushion 32, a blower fan 34 that adjusts the ambient air of the seating surface, and a headrest 35 that supports the head of the occupant.

[0013] In this embodiment, the seat back cushion 32 corresponds to the "cushion material" of the present invention, the seat back cover 33 corresponds to the "seat cover" of the present invention, and the blower fan 34 corresponds to the "blower device" of the present invention. Hereinafter, each member of the vehicle seat 1 will be specifically described.

[0014] FIG. 3 is a rear view showing a state in which the seat cover 13 and the seat back cover 33 of the vehicle seat 1 in FIG. 2 are removed. FIG. 4 is a rear view showing a state in which the seat cushion 12 and the seat back cushion 32 of the vehicle seat 1 in FIG. 3 are removed. Further, FIG. 5 is a cross-sectional view taken along the line A-A of FIG. 2.

[0015] As shown in FIGS. 1 to 5, the seat frame 11 of the seat portion 10 constitutes the skeleton of the seat portion 10. The lower part of the seat frame 11 is attached such that both side portions in the seat width direction are movably attached to the left and right seat rails 2 via traveling portions (not shown) (FIGS. 1 to 4). The seat rails 2 are provided on a floor portion (not shown) in the vehicle interior and extend in the vehicle front-rear direction.

[0016] The seat cushion 12 has elastic characteristics and is installed on the upper part of the seat frame 11 (FIGS. 1 to 3 and FIG. 5). The upper part of the seat cushion 12 forms a seating surface on which the occupant sits. The seat cover 13 is a trim that covers the seat cushion 12 from above (FIGS. 1 and 2). The seat cover 13 covers the upper part (seating surface), front part, rear part, and both left and right side parts of the seat cushion 12.

[0017] The seat back frame 31 of the seat back 30 includes a frame body 311, a fan fixing bracket 312, an airbag fixing bracket 313, a plurality of wire routing brackets 314A to 314C, and an S-shaped spring 315 (FIGS. 4 and 5).

[0018] The frame body 311 is a member that constitutes the skeleton of the seat back frame 31 and is formed in a substantially rectangular shape by bending a pipe-shaped member (FIG. 4). The frame body 311 includes an upper cross frame 311A extending in the seat width direction, left and right side frames 311B and 311C extending downward from the left and right ends of the upper cross frame 311A and arranged parallel to each other, and a lower cross frame 311D extending in the seat width direction so as to connect the lower ends of the left and right side frames 311B and 311C. The upper cross frame 311A and the lower cross frame 311D are each horizontal and extend parallel to each other. The left and right side frames 311B and 311C extend in an intersecting direction intersecting the seat width direction. In this embodiment, the left side frame 311B corresponds to the "first side frame" of the present invention, the right side frame 311C corresponds to the "second side frame" of the present invention, and the lower cross frame 311D corresponds to the "cross frame" of the present invention.

[0019] The fan fixing bracket 312 extends in the seat width direction, and both longitudinal ends thereof are attached to the upper portions of the left and right side frames 311B and 311C (FIGS. 4 and 5). A blower fan 34 is fixed to an intermediate portion in the longitudinal direction of the fan fixing bracket 312. That is, in the vehicle seat 1 according to this embodiment, the blower fan 34 is installed near the center in the seat width direction at the upper part of the seat back 30.

[0020] The blower fan 34 is connected to a wire harness (first cable body) 51 for fan connection having flexibility. The wire harness 51 for fan connection supplies power from a battery device (not shown) mounted on the vehicle body to the blower fan 34. The wire harness 51 for fan connection is supported at a predetermined position along the frame body 311 by wiring brackets 314A and 314B. Here, the wiring bracket 314A is attached to the central portion of the lower cross frame 311D, and the wiring bracket 314B is attached to the lower portion of the left side frame 311B. The specific wiring of the wire harness 51 for fan connection will be described later.

[0021] The airbag fixing bracket 313 is attached to the central portion in the vertical direction of the seat on the right side frame 311C (FIG. 4). An airbag device 71 extending along the right side frame 311C is fixed to the airbag fixing bracket 313. The airbag device 71 is a side airbag that protects the occupant during a side collision and is disposed on the outer side in the vehicle width direction in the vehicle interior.

[0022] A wire harness (second cable body) 52 for airbag connection having flexibility is connected to the airbag device 71. The wire harness 52 for airbag connection supplies power from the battery device to the airbag device 71. The wire harness 52 for airbag connection is supported at a predetermined position along the frame body 311 by the wiring bracket 314A and a wiring bracket 314C attached to the right end portion of the lower cross frame 311D. The specific wiring of the wire harness 52 for airbag connection will be described later.

[0023] In this embodiment, the wire harness 51 for fan connection and the wire harness 52 for airbag connection correspond to the "seat component parts" of the present invention. Further, the airbag device 71 corresponds to the "seat side device" of the present invention, and the battery device corresponds to the "vehicle body side device" of the present invention.

[0024] The S-shaped spring 315 is arranged along the seat width direction so as to connect the left and right side frames 311B and 311C of the frame body 311 (FIGS. 3 and 4). In the present embodiment, two S-shaped springs 315 are arranged at intervals in the vertical direction.

[0025] The seat back cushion 32 has a main body portion 32A, left and right side cushion portions 32B and 32C, and a concave portion 32D (FIGS. 1 to 3 and 5). The main body portion 32A has elastic characteristics and is a portion that covers the frame body 311 of the seat back frame 31. Specifically, the upper part of the main body portion 32A covers the upper cross frame 311A of the frame body 311 from above, and the lower part of the main body portion 32A covers the lower cross frame 311D of the frame body 311 from below (FIG. 5). The front surface of the main body portion 32A is a seat surface (support surface) that supports the back of the occupant. A plurality of air vents 32E are formed on the front surface side of the main body portion 32A (FIGS. 1 and 5). Each air vent 32E communicates with an air flow path 32F formed inside the main body portion 32A, and the surrounding air of the seat surface is guided to the blower fan 34 through each air vent 32E and the flow path 32F, or the air from the blower fan 34 is blown to the seat surface through the flow path 32F and each air vent 32E (FIG. 5).

[0026] The left and right side cushion portions 32B and 32C have elastic characteristics, are arranged outside the main body portion 32A in the seat width direction, and extend in the vertical direction (FIGS. 1 and 3). The left side cushion portion 32B covers the left side frame 311B of the seat back frame 31 from the side. The right side cushion portion 32C covers the right side frame 311C of the seat back frame 31 and the airbag device 71 from the side.

[0027] The recessed portion 32D is provided on the rear surface side of the main body portion 32A, between the left and right side cushion portions 32B and 32C, and is recessed toward the front of the seat (FIGS. 3 and 5). The upper end of the recessed portion 32D is located at the middle portion in the vertical direction of the main body portion 32A, and the lower end of the recessed portion 32D is located at the lower portion of the main body portion 32A. Inside the recessed portion 32D, two S-shaped springs 315 are arranged so as to cross the recessed portion 32D.

[0028] The seat back cover 33 is a trim that covers from above the seat back cushion 32, and covers the front and rear surfaces of the main body portion 32A and the outer surfaces of the left and right side cushion portions 32B and 32C in the seat back cushion 32 (FIGS. 1, 2, and 5). The periphery of the region facing each air vent 32E in the portion covering the front surface of the main body portion 32A in the seat back cover 33 is configured to have higher air permeability than other regions of the portion. Further, the seat back cover 33 of the present embodiment includes a ventilation portion 331 and a covering portion 332 in the portion covering the lower rear surface of the seat back cushion 32 (FIGS. 2 to 5). The two-dot chain lines shown in FIGS. 3 and 4 virtually show the outer shape and arrangement of the ventilation portion 331 and the covering portion 332 of the seat back cover 33 when the vehicle seat 1 is in use.

[0029] The ventilation portion 331 communicates with the blower fan 34 and is formed at a position covering a portion different from the seating surface (front surface) of the seat back cushion 32. In the present embodiment, the inner space of the recessed portion 32D of the seat back cushion 32 communicates with the blower fan 34, and the ventilation portion 331 is formed at a position covering the portion from the position facing the lower part of the front wall of the recessed portion 32D to the lower end portion of the rear surface of the main body portion 32A in the seat back cover 33 (FIGS. 2 to 5). The ventilation portion 331 is formed using a cloth-like material (for example, Queens cord, etc.) having the same high air permeability as the periphery of the region facing each air vent 32E in the seat back cover 33. That is, the periphery of the region facing each air vent 32E and the ventilation portion 331 in the seat back cover 33 are configured to have higher air permeability than other portions. Note that the material used for the ventilation portion 331 may or may not have translucency.

[0030] Specifically, in a rear view, the ventilation portion 331 is formed in a substantially rectangular shape extending in the seat width direction. However, the shape of the ventilation portion 331 is not limited to the above example. The entire width of the ventilation portion 331 in the seat width direction is narrower than the entire width of the main body portion 32A of the seat back cushion 32. The upper end portion and the left and right end portions of the ventilation portion 331 are sewn to the lower portion on the rear surface side of the seat back cover 33. The lower side portion of the ventilation portion 331 covers the main body portion 32A so as to wrap the main body portion 32A from the lower end on the rear surface side of the main body portion 32A of the seat back cushion 32 toward the front on the lower surface side (FIG. 5).

[0031] The covering portion 332 is formed at a position covering the ventilation portion 331 from the outside of the seat (FIGS. 2 to 5). The covering portion 332 is formed using a cloth-like material having low air permeability and almost no light transmittance (for example, needle punched carpet, etc.). In a state during use of the vehicle seat 1 where it is not rolled up on the upper side at the rear of the seat (a state where it covers the front side below the seat), the covering portion 332 is formed in a substantially trapezoidal shape in which the entire width in the seat width direction becomes narrower from the upper side toward the lower side in a rear view. However, the shape of the covering portion 332 is not limited to the above example. The entire width of the upper end side of the covering portion 332 is approximately the same as the entire width of the main body portion 32A of the seat back cushion 32 or wider than the entire width of the main body portion 32A. The upper end portion of the covering portion 332 is sewn to the lower portion on the rear surface side of the seat back cover 33 at a position substantially overlapping the upper end portion of the ventilation portion 331 (FIG. 5). The left and right end portions and the lower end portion of the covering portion 332 are not sewn to the seat back cover 33. That is, the portions other than the sewing portion of the covering portion 332 are configured to be spaced apart from the lower portion on the rear surface side including the ventilation portion 331 of the seat back cover 33 toward the rear side of the seat. The lower side portion of the covering portion 332 covers the main body portion 32A and the seat cushion 12 so as to wrap the main body portion 32A and the seat cushion 12 from the lower end on the rear surface side of the main body portion 32A of the seat back cushion 32 toward the front of the lower surface of the seat cushion 12.

[0032] In addition, a through-hole is provided in the ventilation portion 331 at a position facing the covering portion 332. In the present embodiment, for example, four through-holes 331A, 331B, 331C, and 331D are provided at intervals in the sheet width direction in a portion of the ventilation portion 331 that covers the concave portion 32D of the seat back cushion 32 (FIGS. 2 to 4). Each of the through-holes 331A to 331D penetrates the ventilation portion 331 in the sheet front-rear direction and has a slit-like shape extending in the sheet vertical direction. The lower end portions of the through-holes 331A to 331D are adjacent to the lower cross frame 311D.

[0033] Specifically, the first through-hole 331A and the second through-hole 331B are provided in the central portion in the sheet width direction of the ventilation portion 331. When viewed from the rear, a wiring bracket 314A is arranged between the first through-hole 331A and the second through-hole 331B. The first through-hole 331A is arranged on the side of the side frame 311C (second side frame) on the right side of the second through-hole 331B (FIG. 4). The second through-hole 331B is arranged on the side of the side frame 311B (first side frame) on the left side of the first through-hole 331A. A fan connection wire harness (first cable body) 51 is inserted into the first through-hole 331A, and an airbag connection wire harness (second cable body) 52 is inserted into the second through-hole 331B (FIG. 2). In addition, the third through-hole 331C is arranged at an interval to the left of the second through-hole 331B. Further, the fourth through-hole 331D is arranged at an interval to the right of the first through-hole 331A. Note that the number, shape, and arrangement of the through-holes provided in the ventilation portion 331 are not limited to the above example.

[0034] The blower fan 34 is an air conditioning device for adjusting the ambient air around the seating surface of the seat back 30. The blower fan 34 is configured to be rotatable in both directions by the electric power supplied by the fan connection wire harness 51. When the blower fan 34 rotates in one direction (forward rotation), the ambient air around the seating surface of the seat back 30 is sucked in from each air outlet 32E formed on the front side of the main body 32A of the seat back cushion 32, passes through the flow path 32F inside the main body 32A, the blower fan 34, the recess 32D of the main body 32A, and the ventilation part 331 of the seat back cover 33 in sequence, and is sent out to the rear side of the seat back 30. On the other hand, when the blower fan 34 rotates in the opposite direction (reverse rotation), the air on the rear side of the seat back 30 flows in the direction opposite to that during the forward rotation and is sent out to the seating surface of the seat back 30.

[0035] The headrest 35 is configured to support the head of an occupant sitting on the seat portion 10 of the vehicle seat 1. The headrest 35 is detachably attached to the seat back frame 31 by being inserted into a headrest guide 36 (Fig. 4) provided at the central portion of the upper cross frame 311A of the seat back frame 31.

[0036] Next, the routing of the fan connection wire harness 51 and the airbag connection wire harness 52 will be described in detail. As shown in Figs. 2 to 4, the fan connection wire harness 51 and the airbag connection wire harness 52 extend rearward from the wire connection part 3 below the seat cushion 12. Then, the fan connection wire harness 51 extends through the seat cushion 12 to the right side portion on the lower side of the seat back frame 31, and the airbag connection wire harness 52 extends through the seat cushion 12 to the left side portion on the lower side of the seat back frame 31.

[0037] The wire harness 51 for fan connection that has reached the right side portion on the lower side of the seat back frame 31 curves upward and extends above the lower cross frame 311D of the seat back frame 31. Then, the wire harness 51 for fan connection curves toward the left side and extends along the seat width direction above the lower cross frame 311D to the wiring bracket 314A arranged at the center in the seat width direction.

[0038] At this time, before the wire harness 51 for fan connection reaches the wiring bracket 314A, it is inserted from the rear side of the seat through the first through hole 331A provided in the ventilation portion 331 of the seat back cover 33 (FIG. 2). That is, the wire harness 51 for fan connection is routed so as to pass outside the ventilation portion 331 (rear side of the seat) before being inserted through the first through hole 331A and inside the ventilation portion 331 (front side of the seat) after being inserted through the first through hole 331A. The opening area of the first through hole 331A in the state where the wire harness 51 for fan connection is inserted is wider than the cross-sectional area of the wire harness 51 for fan connection. For this reason, a gap is formed between the wire harness 51 for fan connection and the edge of the first through hole 331A.

[0039] Therefore, in a state where the covering portion 332 of the seat back cover 33 covers the ventilation portion 331 from the outside of the seat (the state of the covering portion 332 indicated by the two-dot chain line in FIG. 2), the portion of the wire harness 51 for fan connection located in the section from the right end of the ventilation portion 331 to the first through hole 331A is arranged between the ventilation portion 331 and the covering portion 332. In other words, the wire harness 51 for fan connection is arranged between the ventilation portion 331 and the covering portion 332 in a state of being inserted through the first through hole 331A, and a gap is formed between the wire harness 51 for fan connection and the edge of the first through hole 331A. In such a state, a ventilation space V1 is formed by the ventilation portion 331, the covering portion 332, and the wire harness 51 for fan connection (FIG. 5). This ventilation space V1 communicates with the interior space of the vehicle at the right end side in the seat width direction.

[0040] The wire harness 51 for fan connection that has reached the wiring bracket 314A is supported by the wiring bracket 314A and then extends along the seat width direction above the lower cross frame 311D to the side frame 311B on the left side of the seat back frame 31 (Fig. 4). Then, the wire harness 51 for fan connection curves upward and is supported by the wiring bracket 314B attached to the side frame 311B on the left side, and then extends upward along the side frame 311B on the left side. Further, the wire harness 51 for fan connection curves toward the right in front of the fan fixing bracket 312 and extends to the blower fan 34.

[0041] On the other hand, the wire harness 52 for airbag connection that has reached the left side portion on the lower side of the seat back frame 31 curves upward and extends above the lower cross frame 311D of the seat back frame 31. Then, the wire harness 52 for airbag connection curves toward the right and extends along the seat width direction above the lower cross frame 311D to the wiring bracket 314A arranged at the center in the seat width direction.

[0042] At this time, before reaching the wiring bracket 314A, the wire harness 52 for airbag connection is inserted from the rear side of the seat through the second through hole 331B provided in the ventilation portion 331 of the seat back cover 33 (Fig. 2). That is, the wire harness 52 for airbag connection is routed so as to pass outside the ventilation portion 331 (rear side of the seat) before insertion into the second through hole 331B and inside the ventilation portion 331 (front side of the seat) after insertion into the second through hole 331B. The opening area of the second through hole 331B in the state where the wire harness 52 for airbag connection is inserted is wider than the cross-sectional area of the wire harness 52 for airbag connection. For this reason, a gap is formed between the wire harness 52 for airbag connection and the edge of the second through hole 331B.

[0043] Therefore, in a state where the covering portion 332 of the seat back cover 33 covers the ventilation portion 331 from the outside of the seat (the state of the covering portion 332 shown by the two-dot chain line in FIG. 2), the portion of the airbag connection wire harness 52 that is located in the section from the left end of the ventilation portion 331 to the second through-hole 331B is disposed between the ventilation portion 331 and the covering portion 332. In other words, the airbag connection wire harness 52 is disposed between the ventilation portion 331 and the covering portion 332 in a state of being inserted through the second through-hole 331B, and a gap is formed between the airbag connection wire harness 52 and the edge of the second through-hole 331B. In such a state, a ventilation space V2 is formed by the ventilation portion 331, the covering portion 332, and the airbag connection wire harness 52 (FIG. 5). This ventilation space V2 communicates with the vehicle interior space on the left end side in the seat width direction. Further, the ventilation space V1 formed by the fan connection wire harness 51 described above and the ventilation space V2 formed by the airbag connection wire harness 52 communicate with each other in the seat width direction. That is, the entirety of the ventilation spaces V1 and V2 communicates with the vehicle interior space on both end sides in the seat width direction.

[0044] The airbag connection wire harness 52 that has reached the wiring bracket 314A is supported by the wiring bracket 314A and then extends along the seat width direction above the lower cross frame 311D to the wiring bracket 314C disposed at the right end portion of the lower cross frame 311D (FIG. 4). Then, after being supported by the wiring bracket 314C, the airbag connection wire harness 52 curves upward and extends along the right side frame 311C to the airbag device 71.

[0045] Next, the operation of the vehicle seat structure according to the present embodiment will be described. In the vehicle seat 1 having the above-described structure, power from the battery device is supplied to the blower fan 34 by the wire harness 51 for fan connection, so that the blower fan 34 rotates in a desired direction. Here, for example, the operation when the blower fan 34 rotates (rotates forward) in a direction to send the ambient air around the seating surface of the seat back 30 to the rear side of the seat back 30 will be described with reference to FIG. 5. Note that the case where the blower fan 34 rotates in the opposite direction (rotates backward) can be considered in the same manner as when the blower fan 34 rotates forward, so the description here is omitted.

[0046] When the blower fan 34 rotates forward, as shown by the arrow line in FIG. 5, the ambient air around the seating surface of the seat back 30 is sucked into the blower ports 32E formed in the main body portion 32A of the seat back cushion 32, and is guided to the blower fan 34 through the flow path 32F inside the main body portion 32A. The air that has passed through the blower fan 34 passes through the space formed between the recess 32D provided on the rear side of the main body portion 32A and the seat back cover 33, and then passes through the ventilation portion 331 and the through holes 331A to 331D of the seat back cover 33, and is guided to the ventilation spaces V1 and V2 formed between the ventilation portion 331 and the covering portion 332.

[0047] In the ventilation spaces V1 and V2 between the ventilation portion 331 and the covering portion 332, since the air permeability of the covering portion 332 is low, the air flow that has passed through the ventilation portion 331 and the through holes 331A to 331D is blocked by the covering portion 332, and the flow direction of the air changes in the seat width direction. Then, the air flowing in the seat width direction through the ventilation spaces V1 and V2 is sent out to the vehicle interior space from the right end side of the ventilation space V1 and the left end side of the ventilation space V2.

[0048] As described above, in the vehicle seat 1 according to the present embodiment, the seat back cover 33 has a breathable vent portion 331 formed at a position communicating with the blower fan 34 and covering a portion different from the seating surface of the seat back cushion 32, and a covering portion 332 formed at a position covering the vent portion 331 from the outside of the seat. In such a structure, the vent hole provided in the conventional vehicle seat described above is constituted by the vent portion 331 of the seat back cover 33. Thereby, when an article or the like comes into contact with the position of the vent portion 331 of the seat back cover 33, it is possible to easily deform, break or displace the vent portion 331 and suppress the concentration of load on the article or the like. Further, since the vent portion 331 of the seat back cover 33 is covered from the outside of the seat by the covering portion 332, it is possible to avoid the exposure of the vent portion 331 into the vehicle interior.

[0049] Further, in the vehicle seat 1 according to the present embodiment, with respect to the seat back cover 33, a flexible wire harness 51 for fan connection and a wire harness 52 for airbag connection are disposed between the vent portion 331 and the covering portion 332, and ventilation spaces V1 and V2 are formed by the vent portion 331 and the covering portion 332 and the wire harness 51 for fan connection and the wire harness 52 for airbag connection. By forming such ventilation spaces V1 and V2, the breathability of the vent portion 331 of the seat back cover 33 can be enhanced. Further, at the time of contact with an article or the like, the flexible wire harness 51 for fan connection and the wire harness 52 for airbag connection can be deformed to absorb the load, or the article or the like can be moved toward the seat back cushion 32 together with the wire harness to absorb the load by the seat back cushion 32. Furthermore, since the covering portion 332 of the seat back cover 33 also covers the wire harness 51 for fan connection and the wire harness 52 for airbag connection, it is possible to avoid the exposure of the wire harness into the vehicle interior.

[0050] In addition, in the vehicle seat 1 according to the present embodiment, the ventilation portions 331 of the seat back cover 33 have through-holes 331A to 331D at positions facing the covering portion 332. In such a structure, since the through-holes 331A to 331D are covered by the covering portion 332, air can be sent through the through-holes 331A to 331D while avoiding the exposure of the through-holes 331A to 331D into the vehicle interior, so that the blowing efficiency by the blower fan 34 can be enhanced.

[0051] In addition, in the vehicle seat 1 according to the present embodiment, the fan connection wire harness 51 is disposed between the ventilation portion 331 and the covering portion 332 in a state of being inserted into the first through-hole 331A, and a gap is formed between the fan connection wire harness 51 and the edge of the first through-hole 331A. Similarly, the airbag connection wire harness 52 is disposed between the ventilation portion 331 and the covering portion 332 in a state of being inserted into the second through-hole 331B, and a gap is formed between the airbag connection wire harness 52 and the edge of the second through-hole 331B. In such a structure, even if the first and second through-holes 331A and 331B are blocked by the fan connection wire harness 51 and the airbag connection wire harness 52, the air permeability of the first and second through-holes 331A and 331B can be ensured by the gaps. Further, a part of the fan connection wire harness 51 is disposed inside the seat with respect to the first through-hole 331A, and a part of the airbag connection wire harness 52 is disposed inside the seat with respect to the second through-hole 331B, so that it is possible to efficiently avoid the exposure of the wire harness routed at a position not covered by the covering portion 332 into the vehicle interior. In particular, in the present embodiment, since the wire harness is drawn from each of the first and second through-holes 331A and 331B disposed inside in the seat width direction among the four through-holes 331A to 331D, the routing work of the wire harness can be easily performed.

[0052] In addition, in the vehicle seat 1 according to the present embodiment, the wire harness 51 for fan connection is supported by the edge of the first through-hole 331A, and the wire harness 52 for airbag connection is supported by the edge of the second through-hole 331B. In such a structure, the number of support points of the wire harness 51 for fan connection and the wire harness 52 for airbag connection to the seat back frame 31 can be reduced. As a result, the number of installation brackets for wiring can be reduced, so that it is possible to improve the productivity and reduce the cost of the vehicle seat 1. In addition, the reduction of the wiring brackets can also reduce the possibility that an article or the like contacts the wiring bracket and the load concentrates on the article or the like.

[0053] In addition, in the vehicle seat 1 according to the present embodiment, the wire harness 51 for fan connection that connects the blower fan 34 and the battery device is routed through the first through-hole 331A, and the wire harness 52 for airbag connection that connects the airbag device 71 and the battery device is routed through the second through-hole 331B. Thereby, the first and second through-holes 331A and 331B can be also used as the lead-in ports of the wire harness, so that the seat structure can be simplified. Further, since the wire harness drawn into the first and second through-holes 331A and 331B is covered by the covering portion 332, it is also possible to prevent the appearance of the vehicle seat 1 from being impaired.

[0054] In addition, in the vehicle seat 1 according to the present embodiment, a wiring bracket 314A is provided on the lower cross frame 311D of the seat back frame 31, and the wiring bracket 314A supports a fan connection wire harness 51 and an airbag connection wire harness 52. The wiring bracket 314A is disposed at a position facing the covering portion 332 of the seat back cover 33, and the fan connection wire harness 51 and the airbag connection wire harness 52 have portions routed between the wiring bracket 314A and the ventilation portion 331 of the seat back cover 33. In such a structure, the wiring bracket 314A attached to the seat back frame 31 having high rigidity supports the fan connection wire harness 51 and the airbag connection wire harness 52. Therefore, the fan connection wire harness 51 and the airbag connection wire harness 52 can be supported at the edges of the first and second through-holes 331A and 331B without applying an excessive load to the first and second through-holes 331A and 331B formed in the ventilation portion 331 of the seat back cover 33. Thereby, it is possible to stably route the wire harness while suppressing an increase in the wiring bracket. In addition, since a flexible wire harness, the ventilation portion 331 and the covering portion 332 of the seat back cover 33 are disposed between the wiring bracket 314A and the vehicle interior space, when an article or the like comes into contact, the load applied to the article or the like from the wiring bracket 314A is absorbed by the wire harness or the like, and it is possible to effectively suppress the concentration of the load on the article or the like.

[0055] In addition, in the vehicle seat 1 according to the present embodiment, the wiring bracket 314A is disposed between the first through-hole 331A and the second through-hole 331B. Thereby, the wiring bracket 314A is covered by a portion located between the first and second through-holes 331A and 331B in the ventilation portion 331 of the seat back cover 33 and is further covered by the covering portion 332, so that the exposure of the wiring bracket 314A to the vehicle interior can be surely avoided.

[0056] In addition, in the vehicle seat 1 according to the present embodiment, the first and second through-holes 331A and 331B are arranged at intervals in the seat width direction, and the ventilation spaces V1 and V2 formed by the ventilation part 331 and the covering part 332 of the seat back cover 33 and the wire harnesses 51 and 52 communicate with the vehicle interior space at both ends in the seat width direction. In such a structure, the air flowing in the through direction (seat front-rear direction) of the first and second through-holes 331A and 331B is guided in the seat width direction along the covering part 332 and sent out to the vehicle interior space from both ends in the seat width direction in the ventilation spaces V1 and V2. Thereby, when there is an occupant at a position facing the covering part 332 of the seat back cover 33 on the seat rear side, it is possible to suppress a situation where the air flow on the seat back 30 side gives the occupant a sense of discomfort. Specifically, when the air around the seating surface of the seat back 30 is discharged from the rear surface of the seat back 30, it is possible to prevent the exhaust air from directly hitting the occupant. Further, when sucking the air on the rear surface side of the seat back 30 and blowing it to the seating surface of the seat back 30, it is possible to prevent giving the occupant a sense of discomfort such that the air in front of the occupant is sucked in.

[0057] In addition, in the vehicle seat 1 according to the present embodiment, the fan connection wire harness 51 is routed along the lower cross frame 311D and the left side frame 311B, supported by the wiring bracket 314A, and inserted through the first through-hole 331A. On the other hand, the airbag connection wire harness 52 is routed along the lower cross frame 311D and the right side frame 311C, supported by the wiring bracket 314A, and inserted through the second through-hole 331B. In such a structure, the fan connection wire harness 51 and the airbag connection wire harness 52 can be easily routed along the seat back frame 31. Further, since the fan connection wire harness 51 and the airbag connection wire harness 52 are supported by the wiring bracket 314A, even if an article or the like approaches the wiring bracket 314A, the wire harnesses supported by the wiring bracket 314A can receive the load, and it is possible to suppress the local concentration of the load on the article or the like.

[0058] Further, in the vehicle seat 1 according to the present embodiment, the first through-hole 331A is disposed on the side frame 311C side on the right side of the second through-hole 331B, and the second through-hole 331B is disposed on the side frame 311B side on the left side of the first through-hole 331A. The fan connection wire harness 51 is routed along the lower cross-frame 311D from the first through-hole 331A toward the left side frame 311B, and the airbag connection wire harness 52 is routed along the lower cross-frame 311D from the second through-hole 331B toward the right side frame 311C. At this time, the routing direction of the fan connection wire harness 51 and the routing direction of the airbag connection wire harness 52 are opposite to each other. By adopting such a structure, it is possible to easily route the fan connection wire harness 51 and the airbag connection wire harness 52 individually.

[0059] Next, a modified example of the vehicle seat 1 according to the above-described embodiment will be described. FIG. 6 is a rear view showing a modified example of the vehicle seat 1. In FIG. 6, similar to FIG. 2 described above, the headrest 35 of the vehicle seat 1 is removed, and the covering portion 332 of the seat back cover 33 is wound upward behind the seat.

[0060] In FIG. 6, the differences in the structure of the vehicle seat 1 in the above-described modified example from that of the above-described embodiment are that restricting portions 332A, 332B and holding portions 332C, 332D are provided on the inner surface (the surface facing the ventilation portion 331) of the covering portion 332, and connectors 51A, 52A are provided on the fan connection wire harness 51 and the airbag connection wire harness 52, respectively. Further, in the above-described embodiment, four through-holes 331A to 331D were formed in the ventilation portion 331 of the seat back cover 33, whereas in the modified example of FIG. 6, two through-holes 331E, 331F are formed in the ventilation portion 331. Since the structures of the modified examples other than the above are the same as the structure of the above-described embodiment, the description thereof is omitted here.

[0061] The restricting parts 332A and 332B are provided to restrict the movement in the seat width direction of the fan connection wire harness 51 and the airbag connection wire harness 52 that are routed outside the ventilation part 331. Specifically, the restricting parts 332A and 332B are arranged in plural (here, two) at intervals in the seat up-and-down direction on the inner surface of the covering part 332, and extend in a strip shape in the seat width direction. Both end parts of each of the restricting parts 332A and 332B in the seat width direction are stitched to both side parts in the seat width direction on the inner surface of the covering part 332.

[0062] Specifically, both end parts of the restricting part 332A located on the lower side in the state where the covering part 332 is rolled up are arranged along both side parts of the region 332E where the entire width in the seat width direction of the covering part 332 changes in the seat up-and-down direction. Also, both end parts of the restricting part 332A in the seat width direction are arranged so as to straddle the boundary part (constricted part) 332G between the region 332E where the entire width changes and the region 332F where the entire width is constant in the covering part 332. Both end parts of the restricting part 332B located on the upper side in the state where the covering part 332 is rolled up are arranged along both side parts of the region 332F where the entire width in the seat width direction of the covering part 332 is constant.

[0063] The connection (stitching) parts between each of the restricting parts 332A and 332B and the covering part 332 as described above are arranged at positions offset downward from the ventilation part 331 in the state during use (the state of covering the front side below the seat) where the covering part 332 shown by the two-dot chain line in FIG. 6 is not rolled up. In other words, in a rear view, the stitching parts of each of the restricting parts 332A and 332B and the ventilation part 331 are arranged so as not to overlap. Specifically, in the modification example of FIG. 6, the stitching parts of each of the restricting parts 332A and 332B are arranged at positions offset outward in the seat width direction and downward from the through-holes 331E and 331F of the ventilation part 331.

[0064] A space is formed between the intermediate portions in the sheet width direction of the regulating portions 332A and 332B and the inner surface of the covering portion 332, through which the fan connection wire harness 51 and the airbag connection wire harness 52 can be inserted. The width in the sheet vertical direction of the regulating portion 332B closer to the connectors 51A and 52A of each wire harness is formed to be narrower than the width in the sheet vertical direction of the regulating portion 332A farther from the connectors 51A and 52A.

[0065] The holding portions 332C and 332D are provided for holding the airbag connection wire harness 52 on the inner surface of the covering portion 332. In the modification of FIG. 6, two holding portions 332C and 332D are provided at intervals in the sheet vertical direction with respect to each of the two regulating portions 332A and 3332B. In other words, the two holding portions 332C and 332D are arranged in the sheet vertical direction with the regulating portion 332A interposed therebetween. Note that the number of holding portions is not limited to two, and one or three or more holding portions may be provided on the inner surface of the covering portion 332. Further, if necessary, a holding portion for holding the fan connection wire harness 51 may be provided on the inner surface of the covering portion 332.

[0066] Specifically, the holding portions 332C and 332D preferably have elastic characteristics or flexibility, and for example, can be configured using a skin member, a tape, or the like. When the holding portions 332C and 332D are configured by a skin member, the sliding of the airbag connection wire harness 52 is allowed, making it easier to adjust the position of the airbag connection wire harness 52. On the other hand, when the holding portions 332C and 332D are configured by a tape, the sliding of the airbag connection wire harness 52 around the holding portions 332C and 332D can be restricted.

[0067] The connectors 51A of the fan connection wire harness 51 and the connectors 52A of the airbag connection wire harness 52 are terminals for electrically connecting the fan connection wire harness 51 and the airbag connection wire harness 52 to, for example, other wire harnesses connected to the wire connection portion 3 below the seat cushion 12.

[0068] The right through-hole 331E formed in the ventilation portion 331 corresponds to the first through-hole 331A of the above-described embodiment and is also used as an inlet for the fan connection wire harness 51. Further, the left through-hole 331F corresponds to the second through-hole 331B of the above-described embodiment and is also used as an inlet for the airbag connection wire harness 52. Each of the through-holes 331E and 331F is disposed on both side portions in the sheet width direction of the ventilation portion 331 and extends in the sheet vertical direction. The lower end portions of the through-holes 331E and 331F extend to a position overlapping with the lower cross-frame 311D (FIGS. 4 and 5) of the seat back frame 31 or below the lower cross-frame 311D.

[0069] In the modification of the vehicle seat 1 as described above, the restricting portions 332A and 332B of the covering portion 332 can restrict the fan connection wire harness 51 and the airbag connection wire harness 52 from moving outward in the sheet width direction than the covering portion 332. For this reason, it is possible to surely suppress the exposure of the wire harness into the vehicle interior. In particular, since both end portions in the sheet width direction of the restricting portion 332A are disposed along both side portions of the entire width change region 332E of the covering portion 332, it becomes easier to guide the fan connection wire harness 51 and the airbag connection wire harness 52 to the inside in the sheet width direction. Further, since both end portions of the restricting portion 332A are disposed so as to straddle the constricted portion 332G of the covering portion 332, it is possible to easily align the fan connection wire harness 51 and the airbag connection wire harness 52 along the wiring direction (sheet vertical direction) on the inner surface of the covering portion 332. Thereby, the effect of suppressing the exposure of the wire harness is enhanced.

[0070] In addition to the restricting portions 332A and 332B as described above, the holding portions 332C and 332D of the covering portion 332 position the airbag connection wire harness 52, so that the exposure of the airbag connection wire harness 52 into the passenger compartment can be more reliably suppressed. In particular, if the holding portion 332D is provided between the two restricting portions 332A and 332B, the movement and sliding of the airbag connection wire harness 52 with respect to each of the restricting portions 332A and 332B can be restricted or limited. Since such holding portions 332C and 332D are provided at positions that do not overlap with the respective restricting portions 332A and 332B, the work of holding the airbag connection wire harness 52 by each of the holding portions 332C and 332D can be easily performed.

[0071] Also, in a modified example of the vehicle seat 1, since the through-holes 331E and 331F of the ventilation portion 331 extend to a position (or below) where they overlap with the lower cross frame 311D, the area of the through-holes 331E and 331F becomes larger, making it easier for air to flow more smoothly. Further, in a state during use in which the covering portion 332 is not rolled up, the connection (stitching) portion between the covering portion 332 and the restricting portions 332A and 332B is arranged at a position offset outward in the seat width direction and below the seat from the through-holes 331E and 331F of the ventilation portion 331, so that the air flowing into the through-holes 331E and 331F is prevented by the restricting portions 332A and 332B, and it is possible to suppress the air from becoming difficult to flow. In particular, if the restricting portions 332A and 332B of the covering portion 332 are arranged so as not to overlap with the ventilation portion 331, it is possible to surely suppress the air flow into the through-holes 331E and 331F from being obstructed by the restricting portions 332A and 332B. That is, the air flow in the left-right direction in the vicinity of the ventilation portion 331 in FIG. 6 is avoided from being obstructed by the restricting portions 332A and 332B of the covering portion 332.

[0072] In addition, since each of the wire harness 51 for fan connection and the wire harness 52 for airbag connection is configured to be separable by connectors 51A and 52A in the middle of the wiring direction, when the covering portion 332 is lifted, the wire harness separated on the seat back 30 side can be moved together with the covering portion 332. This makes it possible to easily perform the wiring work of the wire harness 51 for fan connection and the wire harness 52 for airbag connection and the opening / closing work of the covering portion 332. In addition, since the width of the restricting portion 332B closer to the connectors 51A and 52A of each wire harness is formed to be narrower than the width of the restricting portion 332A on the farther side, the portions on the connectors 51A and 52A sides of each wire harness are more likely to slide and deform, so that the connection work of the connectors 51A and 52A can be easily performed.

[0073] As described above, the embodiments of the present invention and their modified examples have been described. However, the present invention is not limited to the above-described embodiments and modified examples, and various modifications and changes are possible based on the technical idea of the present invention. For example, in the above-described embodiments and modified examples, an example in which the blower fan 34 is arranged on the seat back 30 side has been described. However, the seat structure of the present invention can also be applied when the blower fan 34 is arranged on the seat portion 10 side.

[0074] Also, in the above-described embodiments and modified examples, an example in which the wire harness 51 for fan connection and the wire harness 52 for airbag connection are arranged between the ventilation portion 331 and the covering portion 332 as flexible seat components has been described. However, other seat components other than the wire harness (for example, a part of a cushion material or an S-shaped spring) may be arranged between the ventilation portion 331 and the covering portion 332. The flexible seat component in the present invention may be a component made flexible by thinning the material itself, or may have flexibility by arranging an elastic body or the like around the component even if the component itself has no flexibility.

[0075] In addition, in the above-described embodiments and modifications, an example in which the first and second through-holes 331A and 331B are arranged at intervals in the sheet width direction has been shown. However, it is possible to arrange the first and second through-holes at intervals in the direction along the surface of the ventilation portion (for example, the sheet vertical direction or the like).

[0076] In addition, in the above-described embodiments and modifications, an example in which the first to fourth through-holes 331A to 331D are formed in the ventilation portion 331 has been described. However, the wall surface partitioning the through-holes may be included in a portion of the seat cover other than the ventilation portion and covered by the covering portion.

[0077] In addition, in the above-described embodiments and modifications, an example in which the upper end portion of the covering portion 332 is sewn to the seat back cover 33 and can be rolled up above the seat has been shown. However, the side portion of the covering portion in the sheet width direction may be sewn and rolled up in the sheet width direction, or the lower end portion of the covering portion may be sewn and rolled up below the seat. Furthermore, the covering portion may be configured to be detachable from the seat cover. In this case, the covering portion is detachably fixed to the seat cover by, for example, a zipper, a hook-and-loop fastener, buttons, clips, or the like. In addition, if the covering portion has low translucency, it may have air permeability like the ventilation portion.

Explanation of Reference Numerals

[0078] 1... Vehicle seat 2... Seat rail 3... Wire connection portion 10... Seat portion 11... Seat portion frame 12... Seat portion cushion 13... Seat portion cover 30... Seat back 31... Seat back frame 311... Frame main body 311A... Upper cross frame 311B... Left side frame (first side frame) 311C... Right side frame (second side frame) 311D... Lower cross frame (cross frame) 312… Fan fixing bracket 313… Airbag fixing bracket 314A~314C… Cable routing bracket (bracket) 315… S-shaped spring 32… Seat back cushion (cushion material) 32A… Body part 32B… Left side cushion part 32C… Right side cushion part 32D… Concave part 32E… Air outlet 32F… Flow path 33… Seat back cover (seat cover) 331… Ventilation part 331A~331F… Through holes 332… Covering part 332A,332B… Restricting parts 332C,332D… Holding parts 34… Blower fan (ventilation device) 35… Headrest 36… Headrest guide 51… Fan connection wire harness (first cable) 52… Airbag connection wire harness (second cable) 51A,52A… Connectors 71… Airbag device (seat side device) V1, V2… Ventilation spaces

Claims

1. A cushioning material that forms a seating surface, A blower device that adjusts the ambient air around the seating surface, A seat cover that covers the cushioning material, A flexible cable body connected to the blower device or a seat-side device, In a vehicle seat structure comprising: The seat cover has: A breathable vent portion that communicates with the blower device and is formed at a position covering a portion different from the seating surface of the cushioning material, A covering portion formed at a position covering the vent portion from the outside of the seat, and includes: The vehicle seat structure, wherein the cable body is routed at a position overlapping the vent portion inside the seat rather than the covering portion.

2. A seat frame having a cable routing bracket that supports the cable body, The cable routing bracket is disposed inside the seat rather than the vent portion and supports the cable body outside the seat. The vehicle seat structure according to claim 1, characterized in that.

3. The vent portion has a first through-hole and a second through-hole disposed at intervals facing the covering portion, The cable routing bracket is disposed between the first through-hole and the second through-hole. The vehicle seat structure according to claim 2, characterized in that.

4. The cushioning material has a portion that covers the support portion of the cable routing bracket in the seat frame from the outside of the seat, The cable routing bracket supports the cable body at a position separated from the portion of the cushioning material. The vehicle seat structure according to claim 3, characterized in that.

5. The cable body has: A first cable body connected to the blower device, A second cable body connected to the seat-side device, and includes: The cable routing bracket supports the first cable body and the second cable body outside the seat, respectively. The vehicle seat structure according to claim 3, characterized in that.

6. The vent portion is formed of a cloth-like material having higher breathability than the covering portion and has a through-hole at a position facing the covering portion. The vehicle seat structure according to claim 1, characterized in that.

7. The cable body is drawn out from the inside of the seat of the vent portion through the through-hole to the outside of the seat, The covering portion has a restricting portion that restricts the movement of the cable body drawn out to the outside of the seat of the vent portion. The vehicle seat structure according to claim 6, characterized in that.

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