JPH0757580B2 - Car seat - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automobile seat, and more particularly to an automobile seat that does not cause fatigue even when riding a long distance.

[Prior art]

As a conventional automobile seat, for example, Japanese Utility Model Laid-Open No. 51-112707
There is one as shown in Japanese Patent Publication.

The seat cushion of this automobile seat is substantially flat.

[Problems to be solved by the invention]

However, according to such a conventional example, the waist of the occupant is not always supported structurally, so if you ride for about 30 minutes to 1 hour, fatigue will naturally accumulate and muscles will relax, There was a risk that the bottom bone would be displaced forward, the spine would be burdened, the pain would be felt, and the fatigue level would increase.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and prevents an occupant's caudal bone from slipping forward on the seat cushion, and a car seat in which pain is not felt and fatigue is not increased. The purpose is to provide.

[Means for solving problems]

In order to achieve such an object, the present invention provides a seat back having at least a first support portion and a fourth support portion for supporting the back of an occupant, a second support portion, a third support portion, and a second support portion for supporting the waist of the occupant. A seat cushion having at least five supporting parts and a sixth supporting part and supporting the seat back, wherein the first supporting part is located 152 mm behind the vertical line passing through the hip point at the seating center line. And the first intersection point 54 mm above the horizontal line passing through the hip point and the positions 161, 167, 158 mm behind the vertical line passing through the hip point, respectively. Above the horizontal line passing through the points, there are second to fourth intersections at positions of 75, 73, and 52 millimeters, respectively, and straight lines connecting the first to fourth intersections, respectively. The second support portion is located 88 mm behind the vertical line passing through the hip point at the seating center line and below the horizontal line passing through the hip point. The first intersection point at a position of 63 mm and 100, 104, and 92 mm behind the vertical line passing through the hip point, and 53, 57, 67 below the horizontal line passing through the hip point, respectively. The second to fourth intersections at a position of millimeter, and are located within an area surrounded by straight lines connecting the first to fourth intersections, respectively, and the third support portion is at the seating center line. , A first intersection point located 7 mm forward of the vertical line passing through the hip point and 65 mm below the horizontal line passing through the hip point And 5 mm and 4 mm behind the vertical line passing through the hip point and 7 mm forward, respectively, and 67, 77 and 72 mm below the horizontal line passing through the hip point. 2 to 4 intersections, each of which is located within an area surrounded by a straight line connecting the first to fourth intersections, and the fourth support portion is laterally centered on the seating center line. In the range of 80 mm, the first intersection point which is 143 mm behind the vertical line passing through the hip point and 60 mm above the horizontal line passing through the hip point and also passes through the hip point. 152, 158 and 149 mm behind the vertical line and 79, 76 and 56 mm above the horizontal line passing through the hip point. The second to fourth intersections are formed so as to be located in the area surrounded by the straight lines connecting the first to fourth intersections, and the fifth support portion is left and right about the seating center line. And 80 mm in the range of 84 mm behind the vertical line passing through the hip point and 59 mm below the horizontal line passing through the hip point, and the hip point also. 95, 99, 88 mm behind the vertical line passing through and below the horizontal line passing through the hip point.
The second to fourth intersections at positions of 48, 52, and 62 millimeters, and located in an area surrounded by straight lines connecting the first to fourth intersections, and the sixth support portion is , At a position of 80 mm to the left and right centering on the seating center line, located 7 mm forward of the vertical line passing through the hip point and 65 mm below the horizontal line passing through the hip point. Positions of 5 mm, 4 mm, and 7 mm forward of the vertical line passing through the hip point and the first intersection, and 67, 77, 72 mm below the horizontal line passing through the hip point. And the second to fourth intersections, which are defined as follows, and are located in an area surrounded by straight lines connecting the first to fourth intersections, respectively.

[Work]

Since the present invention has such a configuration, the lumbar region and the parsal bone portion are evenly contacted and supported by the first to sixth support portions, and therefore the parsal bone portion does not shift forward.

〔Example〕

FIGS. 1 to 3 are views showing an embodiment of the present invention, which is a seat S of the present invention for supporting the upper body, waist and thighs of an occupant, the seat S supporting the occupant's back. A seat back 7 having at least a first supporting portion 1 and a fourth supporting portion 4 for supporting, a second supporting portion 2 for supporting a waist of a passenger, a third supporting portion 3, a fifth supporting portion 5, and a sixth supporting portion. Part 6
And a seat cushion 8 that supports the seat back 7.

Before entering the detailed description, the terms used in the present specification will be specified here.

"Seating centerline of seat back" means JIS (Japanese Industrial Standard) D 4607-1977 three-dimensional sitting human body model (3DM-JM50) for measuring vehicle interior dimensions (hereinafter simply referred to as "human body model") back pan ( (A curved plate that has the shape of the back of the body)
Left and right center plane.

The "hip point" is the center of rotation between the torso and thigh of the "human model" and corresponds to the hip joint of the human body.

The intersection is the intersection of the vertical dimension from the hip point HP and the horizontal dimension from the seating center line BC, and identifies the area supporting the upper and lower body of the occupant by the first to fourth intersections. Specifying this area means that the upper half and the lower half of the occupant can be held in that area even if the seat back and the seat cushion are not so-called seat backs or seat cushions.

At the seating center line (matching the cross section of FIG. 1), the first support portion 1 is located at a position of 152 mm behind the vertical line SS passing through the hip point HP (direction of FIG. 1 A) and the hip. 54 above the horizontal line SH passing through the point HP
The position of the millimeter is the first intersection 21a, and is also 161,167,15 behind the vertical line SS passing through the hip point HP.
Straight lines 21W, 21X, 2 connecting the second to fourth intersections 21b, 21c, 21d of the position of 8 mm and the positions of 75, 73, 52 mm above the horizontal line SH passing through the hip point HP, respectively.
It is located in area 1A (hatched display) surrounded by 1Y and 21Z.

In the seating center line BC, the second support portion 2 has a position of 88 mm behind the vertical line SS passing through the hip point HP and a position 63 mm below the horizontal line SH passing through the hip point HP. 1 intersection 22a and behind the vertical line SS passing through the hip point HP, respectively
Position of 100, 104, 92 mm and the hip point HP
Straight lines 22W, 2 connecting the 2nd to 4th intersections 22b, 22c, 22d with the positions of 53, 57, 67 mm below the horizontal line SH passing through
Area 2A surrounded by 2X, 22Y, 22Z (hatched display)
It is located inside.

In the seating center line, the third support portion 3 has a first position of 7 mm in front of a vertical line SS passing through the hip point HP and a position of 65 mm below a horizontal line SH passing through the hip point HP. 5, 23 behind each vertical line SS that passes through the intersection point 23a and the hip point HP.
Straight lines 23W, 23X connecting the second to fourth intersections 23b, 23c, 23d of 4 mm, 7 mm forward and 67,77,72 mm below the horizontal line SH passing through the hip point HP. It is located in area 3A (hatched display) surrounded by 23Y and 23Z.

As shown in FIG. 1, the fourth support portion 4 has a range of 80 mm to the left and right centering on the seating center line, and a position of 143 mm behind the vertical line SS passing through the hip point HP, as shown in FIG. The first intersection 24a with the position 60 mm above the horizontal line SH passing through the hip point HP, and behind each vertical line SS passing through the hip point HP.
152,158,149 mm position and the hip point H
A straight line 2 connecting the 2nd to 4th intersection points 24b, 24c, 24d with the positions 79, 76, 56 mm above the horizontal line SH passing through P respectively.
It is located in area 4A (hatched display) surrounded by 4W, 24X, 24Y, and 24Z.

The fifth support portion 5 has a range of 80 mm to the left and right around the seating center line, and is 84 mm behind the vertical line SS passing through the hip point HP and from the horizontal line SH passing through the hip point HP. The first intersection 25a with the position of 59 mm downward, and the hip point H
Second to fourth intersection points 25b, 25c at positions of 95,99,88 mm behind the vertical line SS passing through P and at positions of 48,52,62 mm below the horizontal line SH passing through the hip point HP. , 25d are respectively located within an area 5A (hatched display) surrounded by straight lines 25W, 25X, 25Y, 25Z.

Since the sixth support portion 6 has the same position as that of the third support portion 3 in FIGS. 1 and 2, a description will be given with reference numerals in the same drawings. Vertical line SS passing through the hip point HP in the range of 80 mm each
7mm forward and hip point
The first intersection 26a with the position 65 mm below the horizontal line SH passing through HP, and the position 5 mm back and 7 mm forward from the vertical line SS also passing through the hip point HP and the hip point HP Below the horizontal line SH passing through, it is located in an area 6A (hatched display) surrounded by straight lines connecting the second to fourth intersection points 26b, 26c, 26d with the positions of 67, 77, 72 mm respectively. .

In FIG. 1, reference numeral 14 is a pan frame made of FRP material that constitutes the back surface of the seat back 7 and the lower surface of the seat cushion 8, and a pipe-shaped frame 9 is supported in a loop shape on the front surface of the pan frame 14. Thin side frames 10 and 11 are arranged in front of the frame 9.

The seat back 7 includes the pan frame 14, a frame 9 in front of the pan frame 14, and side frames 10, 1.
1 and 2 are wrapped with a pad material 12 made of a polyurethane foam material and covered with a skin 13 such as cloth.

In FIG. 2, reference numerals 7'and 8'shown by broken lines along the seat back 7 and the cushion material 8 are other embodiments of the lines on the front surface side of the seat back 7 and the seat cushion 8, and are shown by solid lines. The shape shown is preferably used for an automobile with a large lateral load such as a race, and the shape shown by a broken line is preferably used for a versatile vehicle.

The first to sixth support portions 1 to 6 are specifically pan frames.
As shown in FIG. 3, the bulging portion 14a is formed by bulging 14 toward the outer skin 13 side, and the pad material 12 disposed on the bulging portion 14a. In other words, the original thickness of the pad material 12 (for example, 20 mm) is narrowed by the skin 13 and the bulging portion 14a so that the load necessary to bend it by 25% (5 mm for 20 mm) is 25 kg. It was formed. And, the parts of the pad material 12 other than the first to sixth support parts 1 to 6 are such that the load becomes 16 to 18 kg (for example, in terms of plate thickness, density, etc.)
If it is good.

The first to sixth support portions 1 to 6 are not limited to those described above. For example, a spring may be stretched between the frames 9, a bent portion may be formed in the spring, and a bracket may be fixed.

Also, the figure discloses a sheet S covered with a uniform skin 13,
Alternatively, only the first, second, fourth and fifth supporting portions 1, 2, 4, and 5 may be formed of a hard resin or the like, and the seat back 7 may be provided on the seat cushion 8.

Therefore, according to the present embodiment, the first to sixth support parts 1 to 6 are evenly distributed over the lumbar region, parsal bones and thighs of most of the occupants (98% of Japanese according to the measurement results). Since it is abutted and supported, the coccyx part does not shift forward, and therefore the spine is not burdened, does not feel pain, and does not feel fatigue.

[Effect]

As described above, according to the present invention, the seat back having at least the first support portion and the fourth support portion for supporting the occupant's back, the second support portion for supporting the occupant's waist, and the third support A seat cushion that has at least a seat portion, a fifth support portion, and a sixth support portion and supports the seat back, and the first support portion is behind the vertical line passing through the hip point at the seating center line. At a position of millimeters, there is a first intersection point 54 mm above the horizontal line passing through the hip point and positions 161, 167, 158 mm behind the vertical line passing through the hip point, respectively. Above the horizontal line passing through the hip point, there are second to fourth intersections at positions of 75, 73, and 52 mm, respectively, and the first to fourth intersections are connected to each other. The second support portion is located within an area surrounded by a straight line, and the second support portion is located 88 mm behind the vertical line passing through the hip point at the seating center line and below the horizontal line passing through the hip point. At the first intersection point at a position of 63 mm and 100, 104, and 92 mm behind the vertical line passing through the hip point, and 53, 57 below the horizontal line passing through the hip point. 67 mm and the second to fourth intersections, and is located in an area surrounded by straight lines connecting the first to fourth intersections, and the third support portion is a seating center line. At a position 7 mm in front of the vertical line passing through the hip point and 65 mm below the horizontal line passing through the hip point. 1 intersection, 5 mm and 4 mm behind the vertical line passing through the hip point, and 7 mm forward, and 67 mm, 77 mm, and 72 mm below the horizontal line passing through the hip point. The second to fourth intersections that are formed, and are located in an area surrounded by straight lines that connect the first to fourth intersections, and the fourth support portion is left and right about the seating center line. And the first intersection point which is 143 mm behind the vertical line passing through the hip point and 60 mm above the horizontal line passing through the hip point, and also in the same range as the hip point. 152, 158, and 149 mm behind the vertical line passing through, and 79, 76, and 56 mm above the horizontal line passing through the hip point, respectively. The second to fourth intersections forming a position, and is located in an area surrounded by straight lines connecting the first to fourth intersections, respectively, and the fifth support portion is centered on the seating center line. In the range of 80 mm to the left and right, and at a position 84 mm behind the vertical line passing through the hip point and at a position 59 mm below the horizontal line passing through the hip point, and the same as above. 95, 99, 88 mm behind the vertical line passing through the hip point and below the horizontal line passing through the hip point.
The second to fourth intersections at positions of 48, 52, and 62 millimeters, and located in an area surrounded by straight lines connecting the first to fourth intersections, and the sixth support portion is , At a position of 80 mm to the left and right centering on the seating center line, located 7 mm forward of the vertical line passing through the hip point and 65 mm below the horizontal line passing through the hip point. Positions of 5 mm, 4 mm, and 7 mm forward of the vertical line passing through the hip point and the first intersection, and 67, 77, 72 mm below the horizontal line passing through the hip point. And the second to fourth intersections, which form the area, and is located in an area surrounded by straight lines connecting the first to fourth intersections, respectively. Since the portion is not displaced forward, without feeling pain, the effect is obtained that the degree of fatigue is also significantly reduced.

[Brief description of drawings]

1 to 3 are views showing an embodiment of the present invention, in which FIG. 1 is a vertical sectional view, FIG. 2 is an enlarged view of an essential part of FIG. 1, and FIG. 3 is a vertical sectional view of a supporting portion. It is a figure. S ... Automotive seat, 1-6 ... 1st-6th support, 7
...... Seat back, 8 ...... Seat cushion, 1A ...... Area, 21a, 22a, 23a, 24a, 25a, 26a ...... 1st intersection, 21
b, 22b, 23b, 24b, 25b, 26b ... the second intersection, 21c, 22c,
23c, 24c, 25c, 26c …… 3rd intersection, 21d, 22d, 23d, 24
d, 25d, 26d …… 4th intersection, HP …… hip point, SS
...... Vertical line passing through the hip point HP, SH …… Horizontal line passing through the hip point HP.

Claims (1)

[Claims] 1. A first support part and a fourth support part for supporting the back of an occupant.
A seat back having at least a support portion, and a seat cushion having at least the second support portion, the third support portion, the fifth support portion and the sixth support portion for supporting the waist of the occupant and supporting the seat back. And the first support portion is located at a position 152 cm behind the vertical line passing through the hip point and 54 mm above the horizontal line passing through the hip point at the seating center line. , The second to fourth intersections which are respectively 161, 167 and 158 mm behind the vertical line passing through the hip point and 75, 73 and 52 mm above the horizontal line passing through the hip point. And is located in an area surrounded by straight lines connecting the first to fourth intersections, respectively, and the second support portion is at the seating center line. , At a position 88 mm behind the vertical line passing through the hip point and at a position 63 mm below the horizontal line passing through the hip point, and behind the vertical line also passing through the hip point. The second to fourth intersections at the positions of 100, 104, and 92 mm, and the positions of 53, 57, and 67 mm below the horizontal line passing through the hip point, respectively, and the first to the fourth intersections. The third support portion is located in an area surrounded by straight lines connecting the intersections, and the third support portion is located 7 mm forward of the vertical line passing through the hip point at the seating center line, and the hip point The first intersection, which is located 65 mm below the horizontal line passing through, and 5, 4 mm behind the vertical line that also passes through the hip point. There is a second to fourth intersection at a position of 7 mm forward and below the horizontal line passing through the hip point and at positions of 67, 77 and 72 mm, respectively, and between the first to fourth intersections. The fourth support portion is located within the area surrounded by the straight lines connecting the respective lines, and the fourth support portion has a range of 80 mm to the left and right around the seating center line and 143 mm behind the vertical line passing through the hip point. A first intersection point which is located at a position of 60 mm above the horizontal line passing through the hip point, and at a position of 152, 158, 149 mm behind the vertical line passing through the hip point, respectively. Above the horizontal line passing through the hip point, there are second to fourth intersections at positions of 79, 76, and 56 millimeters, respectively, and straight lines connecting the first to fourth intersections, respectively. The fifth support portion is located within a range of 80 mm from the seating center line to the left and right, and 84 mm behind the vertical line passing through the hip point. , The first intersection point 59 mm below the horizontal line passing through the hip point and 95, 99, 88 mm behind the vertical line passing through the hip point, and passing through the hip point Below the horizon
The second supporting member has second to fourth intersecting points at positions of 48, 52, and 62 mm, and is located in an area surrounded by straight lines connecting the first intersecting point to the fourth intersecting point. It is located in a range of 80 mm to the left and right around the seating center line, is located 7 mm ahead of the vertical line passing through the hip point, and is 65 mm below the horizontal line passing through the hip point. 1 intersection, 5 mm and 4 mm behind and 5 mm from the vertical line passing through the hip point, and 67 mm, 77 mm and 72 mm below the horizontal line passing through the hip point. And a second to fourth intersection point formed, and is located in an area surrounded by straight lines connecting the first to fourth intersection points, respectively. .