Vehicle seat

Abstract

To provide a vehicular seat that can secure ventilation volumes from a blower, with a simpler method.SOLUTION: A vehicular seat S comprises a pad 1b having a vent hole 5 communicating with a blower 4 formed therein, and a surface cover 10, provided to cover the pad, which has a plurality of through-holes 11 arranged so that at least parts thereof overlap with the vent hole 5 of the pad formed therein. The plurality of through-holes formed in the surface cover are formed so that a first aperture ratio, a ratio of aperture areas of the plurality of through-holes per a certain area in a region 8 where the surface cover overlaps with the vent hole is equal to or higher than a second aperture ratio, a ratio of aperture areas of the plurality of through-holes per a certain area in a region 9 where the surface cover does not overlap with the vent hole.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat equipped with a blower device capable of blowing air to an occupant. [Background technology]

[0002] Conventionally, there are vehicle seats that can blow air from a blower installed inside the seat to an occupant seated in the seat. In such vehicle seats, air generated by the blower passes through a duct, an air passage and an air vent formed in a pad inside the seat, and reaches the body of the occupant. For this reason, such vehicle seats usually have through holes drilled in the upholstery, which is a seat component. Patent Document 1 discloses that a vehicle seat with an air conditioning function has a large number of holes formed in the upholstery to increase breathability. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-132350 A Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, a backing material with different air permeability is used in the air-conditioned area and the non-air-conditioned area in order to make the air permeability different depending on the region of the seating surface of the vehicle seat. However, since the manufacturing of the backing material is very difficult, it has been desired to ensure the amount of air permeation from the air blower in a simpler method.

[0005] The present invention has been made in consideration of the above problems, and has an object to provide a vehicle seat that can ensure a sufficient amount of air from a blower device in a simpler manner. [Means for solving the problem]

[0006] The problem is solved by providing a cover for a vehicle comprising a pad having an air vent formed therein that communicates with a blower device, and a skin that is provided to cover the pad and has a plurality of through holes formed therein that are arranged so as to overlap at least a portion of the air vent of the pad, wherein at least one of the plurality of through holes is arranged in an area that does not overlap the air vent, and the plurality of through holes that are arranged so as to overlap at least a portion of the air vent of the pad are formed so that the width of the through hole increases from the back side to the front side of the skin in a cross-sectional shape of each of the plurality of through holes cut in a direction perpendicular to the surface of the skin. The number of the through holes per certain area in the region where the skin and the ventilation hole overlap is equal to or greater than the number of the through holes per certain area in the region where the skin and the ventilation hole do not overlap. The problem is solved by a vehicle seat. The above problem is also solved by a vehicle seat comprising: a pad having an air vent formed therein that communicates with a blower; and a skin that is provided to cover the pad and has a plurality of through holes formed therein that are arranged so as to overlap at least partially with the air vent of the pad, wherein at least one of the plurality of through holes is arranged in an area that does not overlap with the air vent, and the plurality of through holes that are arranged so as to overlap at least partially with the air vent of the pad are formed such that, in a cross-sectional shape of each of the plurality of through holes cut in a direction perpendicular to a surface of the skin, the width of the through hole increases from the rear side to the front side of the skin, and the number of the through holes per certain area in the area where the skin and the air vent overlap is such that the size of the through hole formed in the area where the skin overlaps with the air vent is larger than the size of the through hole formed in the area where the skin does not overlap with the through hole. This configuration makes it possible to ensure the amount of airflow from the blower device in a simpler manner. In addition, with this configuration, for example, the opening on the rear side of the through hole is made smaller, making the pad less noticeable.

[0007] Also, By making the number of through holes per fixed area in the region where the skin and the ventilation holes overlap greater than or equal to the number of through holes per fixed area in the region where the skin and the ventilation holes do not overlap, it is possible to increase the ventilation volume with a simpler configuration. In addition, by enlarging the through holes used for ventilation, the amount of ventilation from the blower device can be ensured.

[0008] In this case, the size of the through hole formed in the area where the skin overlaps the air hole may be equal to the size of the through hole formed in the area where the skin does not overlap the through hole. By increasing the density while keeping the size of the through holes constant, the amount of ventilation is ensured. Since the size of the through holes is constant, for example, a common jig can be used to form the through holes.

[0010] The size of the through hole formed in the area where the skin overlaps the ventilation hole may be larger than the size of the through hole formed in the area where the skin does not overlap the through hole. By enlarging the through hole used for ventilation, the amount of ventilation from the blower device can be ensured.

[0011] The sheet may have a hole aggregate formed by gathering a portion of the plurality of through holes, the hole aggregate forming a specific shape, and the area surrounded by the specific shape may be arranged on the skin so that the area surrounded by the specific shape overlaps with the air vent. With this configuration, for example, the appearance of the sheet may be improved by a pattern consisting of a specific shape, and the opening rate may be adjusted by the air vent included in the area of ​​the specific shape, so that the amount of ventilation from the blower may be ensured with a simpler configuration.

[0012] The specific shape may be disposed on the skin such that a central portion of the specific shape overlaps a central portion of the ventilation hole. By overlapping the central portion of the specific shape with the central portion of the ventilation hole, it is possible to include more through holes communicating with the ventilation hole, and it is possible to ensure the amount of ventilation from the blower.

[0015] The vehicle seat may include a frame supporting the pad and a duct connecting an outlet or an inlet of the blower device to the air vent, and the blower device may be fixed to the frame. By fixing the blower device to the frame, the blower device moves in conjunction with the position of the vehicle seat. Therefore, even if the position of the vehicle seat is changed, it is not necessary to deform the duct for blowing air, and air can be stably blown. Effect of the Invention

[0016] According to the present invention, a plurality of through holes are arranged in the skin so that a first opening ratio in a region where the skin overlaps the ventilation hole is equal to or greater than a second opening ratio in a region where the skin does not overlap the ventilation hole. It is possible to ensure sufficient ventilation from the blower with a simple configuration. In addition, by making the number of through holes per fixed area in the region where the skin and the ventilation holes overlap greater than or equal to the number of through holes per fixed area in the region where the skin and the ventilation holes do not overlap, the ventilation volume can be increased with a simpler configuration. Furthermore, by making the through holes of equal size, it is possible to use a common jig for forming the through holes. Furthermore, by forming the through holes only in the area where the skin and the ventilation holes overlap, manufacturing costs can be reduced. In addition, by enlarging the through holes used for ventilation, the amount of ventilation from the air blower can be secured. By arranging the specific shape of multiple through holes so that they overlap with the ventilation opening, the appearance of the sheet is improved by the pattern of the specific shape, and the opening rate can be adjusted by the ventilation holes included in the specific shape, so that the amount of ventilation from the air blower can be secured with a simple configuration. Furthermore, by overlapping the central portion of the specific shape with the central portion of the ventilation hole, it is possible to include more through holes communicating with the ventilation hole, and it is possible to ensure a sufficient amount of airflow from the blower. Furthermore, by forming the through holes to have the same width, air can be blown without reducing the amount of ventilation. Furthermore, by making the width of the through hole wider toward the front surface side, the opening on the rear surface side of the through hole becomes smaller, making the pad less noticeable. Furthermore, by fixing the air blowing device to the frame of the vehicle seat, air can be blown stably without the need to deform the duct for blowing air even if the position of the vehicle seat is changed. [Brief description of the drawings]

[0017] [Figure 1] 1 is a perspective view showing an appearance of a vehicle seat according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a diagram showing a state in which a cover is removed from the vehicle seat, and is an exploded perspective view showing the appearance of a pad and a frame. [Diagram 3] FIG. 2 is a cross-sectional view of the pad showing the vents and air passages. [Figure 4] FIG. 4 is a partially enlarged cross-sectional view showing the cross-sectional shape of a through hole formed in the skin. [Figure 5A] 4 is a schematic enlarged view showing the positional relationship between through holes formed in the skin and ventilation holes formed in the pad. FIG. [Figure 5B] 4 is a schematic enlarged view showing the positional relationship between through holes formed in the skin and ventilation holes formed in the pad. FIG. [Figure 5C] 4 is a schematic enlarged view showing the positional relationship between through holes formed in the skin and ventilation holes formed in the pad. FIG. [Figure 5D] 4 is a schematic enlarged view showing the positional relationship between through holes formed in the skin and ventilation holes formed in the pad. FIG. [Figure 6] 10 is a partially enlarged cross-sectional view showing another cross-sectional shape of a through hole formed in the skin. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS. This embodiment relates to a vehicle seat comprising a pad having an air vent communicating with a blower, and a skin having a plurality of through holes formed therein, the through holes being arranged so as to overlap at least a part of the air vent of the pad, and the first opening ratio, which is a ratio of the opening area of ​​the plurality of through holes per fixed area in the region where the skin overlaps the air vent, is equal to or greater than a second opening ratio, which is a ratio of the opening area of ​​the plurality of through holes per fixed area in the region where the skin does not overlap the air vent. As shown by the arrow in Fig. 1, the side of the vehicle seat S where an occupant sits is the front side of the seat, and the opposite side is the rear side.

[0019] As shown in Fig. 1, the vehicle seat S of this embodiment includes a seat body including a seat back 1, a seat cushion 2 disposed on the front side of the seat back 1, and a headrest 3 disposed on the upper side of the seat back 1. The seat back 1 is a backrest portion that supports the back of an occupant from behind, and as shown in Fig. 2, a back pad 1b is placed on a back frame 1a serving as a skeleton, and is covered with a skin 10. The seat cushion 2 is a seating portion that supports the occupant from below, and a cushion pad 2b is placed on a cushion frame 2a serving as a skeleton, and is covered with a skin 20. The headrest 3 is a head portion that supports the head of the occupant from behind, and is a cushion pad (not shown) placed on a pillar (not shown) serving as a core material, and is covered with a skin.

[0020] The blower device 4 is a known blower device for air conditioning and ventilation, and is supported by the cushion frame 2a below the cushion pad 2b as shown in Figures 2 and 3. As shown in Figure 3, the air sent from the blower device 4 passes through a duct 6, a plurality of air vents 5 provided in the back pad 1b and the cushion pad 2b, an air passage 7, and a plurality of through holes 11 provided in the skins 10 and 20, and is discharged to a seated occupant (see the arrows in Figure 3).

[0021] The blower device 4 is an exhaust type blower device and is configured so that the air blown from the blower device 4 hits the occupant as shown in Fig. 3, but the blower device 4 may be an intake type blower device. In the case of an intake type, for example, air near the seating surface becomes wind and is drawn into the blower device 4.

[0022] The back pad 1b and the cushion pad 2b are pad members made of urethane foam or the like, and as shown in Fig. 2, the back pad 1b and the cushion pad 2b have skin hanging grooves 1c and 2c formed on the surfaces facing the seated occupant. The skin hanging groove 1c is a groove having a substantially U-shaped cross section for hanging an end of the skin 10, and is disposed so as to surround substantially the center of the seat back 1. The skin hanging groove 2c is a groove having a substantially U-shaped vertical section for hanging an end of the skin 20, and is disposed so as to surround substantially the center of the seat cushion 2.

[0023] 2 and 3, the back pad 1b and the cushion pad 2b are formed with a plurality of ventilation holes 5 extending in the thickness direction of the back pad 1b and the cushion pad 2b in a predetermined arrangement pattern. The plurality of ventilation holes 5 are connected by an air passage 7 and communicate with the blower 4 via the duct 6. As described above, the air blown from the blower 4 is exhausted from the plurality of ventilation holes 5 via the duct 6 and the air passage 7. Note that since the back pad 1b and the cushion pad 2b are formed from a pad material such as urethane foam, it is possible for air to pass through the entire pad other than the ventilation holes 5.

[0024] The skin 10 is made of a stretchable synthetic leather material, and is formed into a shape capable of covering the back pad 1b of the seat back 1 from above, as shown in Fig. 1. More specifically, the skin 10 is made of a plurality of skins, which are sewn together and connected at positions corresponding to the skin hanging grooves 1c. The skin 20 of the seat cushion 2 has the same configuration as the skin 10, and the plurality of skins 20 are sewn together and connected at positions corresponding to the skin hanging grooves 2c.

[0025] As shown in Fig. 4, the skin 10 has a laminated structure, specifically, it is mainly composed of a three-layer structure consisting of a top layer 10a, a foamed layer 10b, and a base fabric layer 10c, in that order from the top surface. The top layer 10a is formed from synthetic leather made of non-foamed polyvinyl chloride (PVC), and the foamed layer 10b is formed from foamed polyvinyl chloride (PVC). The base fabric layer 10c is formed from a cloth material made by knitting a fiber material. A urethane surface treatment layer (not shown) is formed on the surface of the top layer 10a by urethane coating to ensure abrasion resistance and protection.

[0026] The top layer 10a and the foam layer 10b are heat-welded to each other, while the foam layer 10b and the fabric layer 10c are bonded with an adhesive, and a coating film of the adhesive is formed on the boundary surface between the foam layer 10b and the fabric layer 10c. A wadding material (not shown) made of a stretchable and breathable urethane foam material is attached to the back surface of the fabric layer 10c to improve the seating comfort.

[0027] The skin 10 has a plurality of through holes 11 formed therein, as shown in Fig. 4. The through holes 11 are holes that penetrate from the surface 12 to the back surface 13 of the skin 10 in a direction perpendicular to the surface 12 (hereinafter, referred to as the thickness direction T) as shown in Fig. 4. Each of the through holes 11 has a substantially circular shape when viewed from the seating side (from the surface 12 side), and is formed by punching using a known punching roll device or perforation device. The shape of each of the through holes 11 is not particularly limited, and may be an ellipse or another geometric shape, and may be appropriately changed according to the design of the vehicle seat S.

[0028] The multiple through holes 11 formed in the skin 10 are arranged so that at least some of the multiple through holes 11 overlap the ventilation holes 5 of the back pad 1b, as shown in the enlarged view of part D in FIG. 1 and FIG. 5A. The opening ratio per certain area, which is the ratio of the opening area of ​​the through holes 11 in the region 8 where the skin 10 overlaps the ventilation holes 5, is defined as a first opening ratio A, and the opening ratio per certain area, which is the ratio of the opening area of ​​the through holes 11 in the region 9 where the skin 10 does not overlap the ventilation holes 5, is defined as a second opening ratio B. The multiple through holes 11 of this embodiment are arranged so that the value of the first opening ratio A is equal to or greater than the value of the second opening ratio B. For example, as shown in FIG. 5A, the multiple through holes 11 are arranged in the skin 10 so that the value of the first opening ratio A with respect to the ventilation holes 5 of the back pad 1b is maximized.

[0029] 5A, several through holes 11 are gathered together to form a plurality of hole clusters 30, which are arranged at predetermined intervals. The hole clusters 30 form a specific shape 31. The area surrounded by the specific shape 31 is arranged on the epidermis 10 so that the area surrounded by the specific shape 31 overlaps with the ventilation hole 5.

[0030] The specific shape 31 shown in FIG. 5A is rectangular. The specific shape 31 may be changed as appropriate, for example, to a circular shape, an elliptical shape, or other geometric shape. It may also be a region having a predetermined width. When the through holes 11 are arranged in the skin 10, the central portion 5a of the ventilation hole 5 and the central portion 31a of the specific shape 31 may overlap. By arranging the through holes 11 in this manner, the amount of ventilation from the blower 4 is more easily ensured compared to a case in which the arrangement of the through holes 11 is not taken into consideration with respect to the ventilation hole 5. In addition, there is no need to use a backing material with a different air permeability for the skin.

[0031] 5B to 5D show another example of the arrangement of the through holes 11. In the skin 110 shown in FIG. 5B, through holes 11a, 11b, and 11c of different sizes are arranged to form a hole assembly 130. Specifically, the hole assembly 130 of the through holes 11 formed in the skin 10 is composed of a hole assembly 130a in which the through holes 11a having a large diameter are arranged at equal intervals, a hole assembly 130b in which the through holes 11b having a medium size are arranged at equal intervals, and a hole assembly 130c in which the smallest through holes 11c are arranged at equal intervals. In this case, the air vent 5 of the back pad 1b is arranged so that the air vent 5 and the hole assembly 130a overlap, since the hole assembly 130a in which the through holes 11a having a large diameter are arranged has the highest opening ratio.

[0032] In the skin 210 shown in Fig. 5C, the through holes 11 formed have the same diameter, but the intervals at which the through holes 11 are arranged are partially different. Specifically, the skin 210 has a hole assembly 230a arranged at a predetermined interval E1 and a hole assembly 230b arranged at an interval E2 wider than the interval E1. In this case, the multiple through holes 11 are arranged in the skin 10 so that the hole assembly 230a, which is the range where the intervals between the through holes 11 are the smallest, i.e., the range where the density is high, overlaps with the ventilation hole 5. With this configuration, the opening ratio of the overlapping portion with the ventilation hole 5 becomes the highest.

[0033] Also, for example, as shown in FIG. 5D, the through-holes 11 may be formed only in the portions of the skin 310 that overlap the ventilation holes 5.

[0034] Further, the cross-sectional shape of each of the through holes 11 shown in FIG. 4 in a direction perpendicular to the surface 12 of the skin 10 (thickness direction T) is formed in a so-called straight type so that the width (diameter) W0 of the through hole 11 is the same throughout the thickness direction T. This is one example, and the cross-sectional shape of the through hole 11 cut in the thickness direction T may be formed so that the width (diameter) of the through hole 511 increases from the back surface 513 side of the skin 510 toward the front surface 512 side, as shown in FIG. 6. That is, the width W1 of the opening on the front surface 512 is larger than the width W2 of the opening on the back surface 513. By reducing the opening area on the back surface 513 side, the pad at the back of the through hole 11 becomes less noticeable when viewed from the front surface side, compared to the case where the through hole 11 is formed straight as shown in FIG. 4.

[0035] In the above embodiment, as shown in Fig. 3, the air blower 4 is attached to the cushion frame 2a of the seat cushion 2, but is not particularly limited thereto, and the air blower 4 may be attached to the back frame 1a of the seat back 1 or to the rear part of the headrest 3. The air blower 4 may be attached to both the seat back 1 and the seat cushion 2.

[0036] In the above embodiment, a vehicle seat used in an automobile was described as a specific example, but without being limited thereto, the seat can be used as a seat for vehicles such as trains, buses, etc., as well as seats for vehicles such as airplanes, ships, etc.

[0037] In this embodiment, the vehicle seat according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention naturally includes equivalents. In particular, the shape, arrangement, and configuration of the through holes described in the above embodiment are merely an example, and do not limit the present invention. [Explanation of symbols]

[0038] S Vehicle seat 1 Seat back 1a Back frame 1b Back pad 1c Skin hanging groove 2 Seat cushion 2a Cushion frame 2b Cushion pad 2c Skin hanging groove 3 Headrest 4. Blower 5. Ventilation holes 5a central part 6 Duct 7 Air passage 8, 9 areas 10, 20, 110, 210, 310, 510 epidermis 10a Top Tier 10b Foam layer 10c base fabric layer 11, 11a, 11b, 11c, 511 through hole 12, 512 surface 13, 513 back 30, 130, 130a, 130b, 130c, 230a, 230b pore aggregate 31 Specific Shape 31a central part A First aperture ratio B Second aperture ratio

Claims

1. A pad having an air hole formed therein and communicating with a blower; a cover provided to cover the pad and having a plurality of through holes formed therein, the through holes being arranged to at least partially overlap the ventilation holes of the pad; At least one of the plurality of through holes is disposed in an area not overlapping with the ventilation hole, The plurality of through holes arranged to overlap at least a portion of the ventilation holes of the pad include In a cross-sectional shape of each of the plurality of through holes cut in a direction perpendicular to the surface of the skin, the width of the through hole is formed to increase from the back side to the front side of the skin, A vehicle seat characterized in that the number of the through holes per certain area in a region where the skin and the air vent overlap is equal to or greater than the number of the through holes per certain area in a region where the skin and the air vent do not overlap.

2. A pad having an air hole formed therein and communicating with a blower; a cover provided to cover the pad and having a plurality of through holes formed therein, the through holes being arranged to at least partially overlap the ventilation holes of the pad; At least one of the plurality of through holes is disposed in an area not overlapping with the ventilation hole, The plurality of through holes arranged to overlap at least a portion of the ventilation holes of the pad include In a cross-sectional shape of each of the plurality of through holes cut in a direction perpendicular to the surface of the skin, the width of the through hole is formed to increase from the back side to the front side of the skin, a size of the through hole formed in a region where the skin overlaps the air vent hole is larger than a size of the through hole formed in a region where the skin does not overlap the through hole.

3. 2. The vehicle seat according to claim 1, wherein a size of the through hole formed in the region where the skin overlaps the air vent is equal to a size of the through hole formed in the region where the skin does not overlap the through hole.

4. 2. The vehicle seat according to claim 1, wherein a size of the through hole formed in the region where the skin overlaps the air hole is larger than a size of the through hole formed in the region where the skin does not overlap the through hole.

5. 5. The vehicle seat according to claim 1, further comprising a hole assembly in which a portion of the plurality of through holes are gathered together, the hole assembly having a specific shape, and the area surrounded by the specific shape is disposed on the cover so that the area surrounded by the specific shape overlaps with the air hole.

6. 6. The vehicle seat according to claim 5, wherein the area surrounded by the specific shape is disposed on the cover so that a central portion of the specific shape overlaps a central portion of the air vent.

7. 7. The vehicle seat according to claim 1, further comprising: a frame supporting the pad; and a duct connecting an outlet or an intake of the air blower device to the air vent, the air blower device being fixed to the frame.

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