JPH0753493B2 - Car seat - Google Patents

Description

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

[Prior art]

As a conventional automobile seat, for example, the actual Kaisho Sho 51-1064
As shown in Japanese Unexamined Patent Publication No. 22 (1994), there are some automobile seats that are formed by scooping above the shoulders of a normal person on both side sleeves of the seat back.

[Problems to be solved by the invention]

However, according to such a conventional technique, the sleeves on both sides of the seat back are molded so as to scoop above the shoulders of a normal person, so that the upper body is uncertainly supported, and when traveling on a curved road. , The upper body is tilted to the left and right, and it is necessary to cling to the handle, which may cause fatigue. In addition, the elbows may interfere with the sleeves on both sides of the seat back when the shift lever for the floor shift is operated.

Therefore, according to the present invention, in view of such conventional problems,
The purpose is to prevent the elbow from interfering with the operation of the shift lever for floor shift while holding the upper body of the occupant.

[Means for solving problems]

In order to achieve the above object, the present invention provides a seat back having at least a first support part, a second support part and a third support part capable of supporting the upper part of the latissimus dorsi of the occupant,
A seat cushion supporting the seat back, wherein the first support portion is located rearward of a vertical line passing through the hip point along ridge lines formed to have a width dimension of 215 mm to the left and right of a seating center line of the seat back. Within the range of 170 mm, there is a first intersection point 291 mm above the hip point along the torso line, and 174, 190, 186 mm behind the vertical line that also passes through the hip point. A straight line connecting the first and second intersections with the second to fourth intersections at the positions of 288, 310, 314 millimeters above the hip point along the torso line, respectively.
Similarly, it is located in an area surrounded by a straight line connecting the third intersection and the fourth intersection, a straight line connecting the first intersection and the fourth intersection, and a straight line connecting the second intersection and the third intersection, 2 The support portion is located 350 mm above the hip point along the torso line, and extends in the range of 214 mm to the left and right of the seat back centerline of the seat back, and to the rear approximately perpendicular to the torso line passing through the hip point. With the first intersection point where is 46 mm,
Similarly, 22 to the left and right from the seating center line of the seat back.
At a position of 0, 228, 221 mm, the size is 350 mm above the hip point along the torso line, and the dimension at a substantially right rear of the torso line passing through the hip point is 43, 58, 62, respectively. A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a straight line connecting the first intersection and the fourth intersection. When,
It is located in an area surrounded by a straight line connecting the second intersection and the third intersection, and the third support portion is the same as the second support portion and extends upward from the hip point along the torso line. Is 35
At the position of 0 mm, within the range of 154 mm to the left and right of the seat back centerline of the seat back, and at the position of 61 mm at a position approximately 61 mm behind the torso line passing through the hip point, and the seat back. 2nd to 4th intersections at positions 158, 173, and 176 mm to the left and right of the seating center line, and at positions 65, 44, and 47 mm, respectively, approximately right rear of the torso line passing through the hip point. A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a first intersection and a third intersection having the rear side of the seat back as a center point. And a curve having a curvature of 120 mm and a curve having a curvature of 200 mm that connects the second intersection and the fourth intersection having the rear side of the seat back as a center point. Characterized in that so as to be positioned more enclosed area.

[Work]

Since the present invention has such a configuration, the upper part of the latissimus dorsi of the occupant is supported by the first support part and the third support part, and the second support part forms a space in which the occupant's elbow can move. While the body is supported, the shift lever can be operated very easily.

〔Example〕

FIG. 1 and FIG. 2 are views showing an embodiment of the present invention, in which reference symbol S is the seat of the present invention, and the seat S is the first support portion 1,
The seat back 4 includes at least the second support portion 2 and the third support portion 3, and the seat cushion 5 supporting the seat back 4.

Before going into 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").
The left and right center planes of the back pan (curved plate that has the shape of the back of the body).

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

The "torso line" is a line (axial line of the body) that is indicated when the torso bar, which is a standard bar for measuring the tilt angle of the back pan, comes into contact with the stopper of the back bracket, and is located behind the vertical line of this line (A The direction) inclination angle is called the torso angle, which is 26 ° in the embodiment of the present invention.

The "intersection" is the intersection of the vertical dimension from the hip point HP and the horizontal dimension from the horizontal line perpendicular to the seating center line BC, and identifies the area supporting the upper body of the occupant by the first to fourth intersections. . Specifying this area means that the upper half of the occupant can be held in the area even if the entire seat back does not have to be a so-called seat back.

As shown in FIG. 1, the first support portion 1 has a “hip point” HP along a ridgeline RS formed with a width dimension of 215 mm on each side from the “seating center line” 6 of the seat back 4. Backward at right angles to the passing perpendicular 7 (direction of arrow A)
To the first intersection point 8a at the position of 170 mm toward each side and the position of the upper dimension along the "torso line" TR from the hip point HP to be 291 mm, and the perpendicular line 7 that also passes through the hip point HP. At 174,190,186 millimeters toward the right-angled rear (direction of arrow A) and the second, third, and fourth intersection points from the hip point HP to the upper dimension along the "torso line" TR at 288,310,314 millimeters, respectively. 8b, 8c, 8d Straight line connecting each 8W, 8
Area 1a formed by X, 8Y, 8Z (hatched display)
It is located inside.

In FIG. 1, reference numeral 18 is an FR that constitutes the back surface of the seat back 4.
A pan frame made of P material, a pipe-shaped frame 13 is supported in a loop shape on the front surface of the pan flume 18, and thin side frames 14 and 15 are arranged in front of the frame 13.

The seat back 4 has a structure in which a frame 13 and side frames 14 and 15 are wrapped on a front surface of the bread frame 18 with a pad material 16 made of a polyurethane foam material and covered with a skin 17 such as cloth.

As shown in FIG. 1, the second support portion 2 has a dimension of 350 mm from the hip point HP to the upper side along the torso line TR at a position of 350 mm, and as shown in FIG. The first intersection with the position of 214 mm to the left and right of the seating center line 6 and the position of 350 mm each, and the position at the rear of the torso line TR that passes through the hip point HP and is approximately 46 mm in the rear direction.
9a, also at a position of 350 mm, at a position of 220,228,221 mm to the left and right of the seating center line 6 of the seat back 4 and at a position of also 350 mm and at a substantially right rear from the torso line TR passing through the hip point HP. The second with the position of 43,58,62 mm,
The 3 and 4 intersections 9b, 9c and 9d are located in the area 2a (hatched display) formed by the straight lines 9W, 9X, 9Y and 9Z.

As shown in FIG. 1, the third support portion 3 has the same dimension as the second support portion 2 from the hip point HP to the upper side along the torso line TR at a position of 350 mm. As shown in, the first intersection point 10a at a position of 154 mm to the left and right of the seating center line 6 of the seat back 4 and at a position of a size of 61 mm to the rear of the torso line TR passing through the hip point HP at a substantially right angle, Similarly, at a position of 350 mm, a torso line TR passing through the seat back center line 6 of the seat back 4 at positions of 158,173,176 mm to the left and right, and passing through the hip point HP.
Has a second, third, fourth intersection 10b, 10c, 10d with a position of a rearward approximately right angle of 65,44,47 mm and a first intersection 10a,
A straight line 10W, 10X connecting the second intersection 10b, the third intersection 10c, and the fourth intersection 10d, respectively, and 120 mm with the seat back 4 rear side connecting the first intersection 10a and the third intersection 10c as the center point. Curve 10Y consisting of the curvature R1 of the seat back 4 and the second intersection 10b and the fourth intersection 1 with the rear side of the seat back 4 as the center point.
It is located within an area 3a (hatched display) surrounded by a curve 10Z having a curvature R2 of 200 mm connecting 0d.

Reference numeral 11 is a fourth support portion, and the fourth support portion 11 is located at a position where the dimension from the hip point HP to the upper side along the torso line TR is 350 mm, and is substantially shorter than the torso line TR passing through the hip point HP. The first to fourth intersections 12a having a dimension of 115 mm and 118 mm in the right-angled rear direction and 6 mm to the left and right including the seating center line 6,
Surrounded by straight lines 12W, 12X, 12Y12Z connecting 12b, 12c, 12d (however, because of left-right symmetry, 12W, 12a, 12b are not shown) Area 11a (hatched display) There is.

Specifically, the first to third support portions 1 to 3 are fixed to the bent portion 14a in which the side frame 14 is bulged toward the outer skin 17 side as shown in FIGS. 3 and 4, and the bent portion 14a. The bracket 14b is provided, and the bending member 14a and the pad member 16 arranged on the front side of the bracket 14b. That is, the original thickness of the pad material 16 (for example, 20 mm) is 25% (20 mm).
The load required for bending is set to be 25 kilograms. The pad material 16 other than the first to third support portions 1 to 3 may have any load (for example, in terms of plate thickness and density) so that the load is 16 to 18 kg. The fourth support portion 11 bulges the bread frame 18 toward the outer skin 17 to narrow the space between the outer skin 17 and the bulging portion of the bread frame 18, and the original plate thickness of the pad material 16 is as described above. For example, it is specified by setting it to 20 millimeters and setting the above load to be 25 kilograms.

Although it has been described that the first to third support portions 1 to 3 include the bent portion 14a and the bracket 14b formed on the side frame 14, and the pad material 16, the present invention is not limited to this.
For example, the bulging portion may be formed on the pan frame 18. Alternatively, a spring may be stretched between the frames 13, a bent portion may be formed in the spring, and the bracket may be fixed. Further, a sub bracket may be installed between the side frames 14 and 15, a bent portion may be formed in the sub bracket, and the bracket may be fixed.

Also, the figure discloses a sheet S covered with a uniform skin 17,
Alternatively, only the first to fourth support portions 1 to 3 and 11 may be formed and arranged with a hard resin or the like to form the seat back 4, and the seat back 5 may be supported by the seat cushion 5.

In FIG. 2, reference numeral 4'shown by a broken line along the seat back 4 is another embodiment of the line on the front surface side of the seat back 4, and the shape shown by the solid line has a large lateral load such as a race. It is suitable for use in automobiles, and the shape indicated by the broken line is suitable for automobiles having general versatility.

Therefore, according to the present embodiment, most of the human body (98% of the Japanese according to the measurement) is supported by the first support portion 1 and the third support portion 3, particularly the latissimus dorsi muscle, and the upper body is left and right. Since the second support portion 2 is positioned so as to be scraped off, the elbow of the occupant can easily come out to the left and right outside of the seat back 4, and the elbow of the occupant can be operated when operating the shift lever of the floor shift. Since it does not interfere with the seat back 4, the operability is excellent.

[Effect]

As described above, according to the present invention, a seat back having at least the first support portion, the second support portion, and the third support portion capable of supporting the upper back muscles of the occupant,
A seat cushion supporting the seat back, wherein the first support portion is located rearward of a vertical line passing through the hip point along ridge lines formed to have a width dimension of 215 mm to the left and right of a seating center line of the seat back. Within the range of 170 mm, there is a first intersection point 291 mm above the hip point along the torso line, and 174, 190, 186 mm behind the vertical line that also passes through the hip point. A straight line connecting the first and second intersections with the second to fourth intersections at the positions of 288, 310, 314 millimeters above the hip point along the torso line, respectively.
Similarly, it is located in an area surrounded by a straight line connecting the third intersection and the fourth intersection, a straight line connecting the first intersection and the fourth intersection, and a straight line connecting the second intersection and the third intersection, 2 The support portion is located 350 mm above the hip point along the torso line, and extends in the range of 214 mm to the left and right of the seat back centerline of the seat back, and to the rear approximately perpendicular to the torso line passing through the hip point. With the first intersection point where is 46 mm,
Similarly, 22 to the left and right from the seating center line of the seat back.
At a position of 0, 228, 221 mm, the size is 350 mm above the hip point along the torso line, and the dimension at a substantially right rear of the torso line passing through the hip point is 43, 58, 62, respectively. A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a straight line connecting the first intersection and the fourth intersection. When,
It is located in an area surrounded by a straight line connecting the second intersection and the third intersection, and the third support portion is the same as the second support portion and extends upward from the hip point along the torso line. Is 35
At the position of 0 mm, within the range of 154 mm to the left and right of the seat back centerline of the seat back, and at the position of 61 mm at a position approximately 61 mm behind the torso line passing through the hip point, and the seat back. 2nd to 4th intersections at positions 158, 173, and 176 mm to the left and right of the seating center line, and at positions 65, 44, and 47 mm, respectively, approximately right rearward of the torso line passing through the hip point. A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a first intersection and a third intersection having the rear side of the seat back as a center point. And a curve having a curvature of 120 mm and a curve having a curvature of 200 mm that connects the second intersection and the fourth intersection having the rear side of the seat back as a center point. Since it is located in a more enclosed area, the occupant's upper body is supported, and the operability of the shift lever for floor shift is significantly improved. Therefore, there is a practical effect that a good driving posture can be maintained and eventually contributes to safe driving.

[Brief description of drawings]

1 to 4 are views showing an embodiment of the present invention, wherein FIG. 1 is a longitudinal sectional view, FIG. 2 is a II-II sectional view of FIG. 1, and FIG.
FIG. 4 is a sectional view for explaining the support portion corresponding to the III-III section of FIG. 2, and FIG. 4 is a perspective view thereof. S: Automotive seat, 1st support portion, 2nd second
Support part, 3 ... Third support part, 4 ... Seat back, 5 ...
… Seat cushion, 6 …… Seating center line, 7 …… Vertical line passing through hip point HP, 8a, 9a, 10a, 12a …… First intersection, 8
b, 9b, 10b, 12b …… 2nd intersection, 8c, 9c, 10c, 12c …… 3rd intersection, 8d, 9d, 10d, 12d …… 3rd intersection, TR …… Torso line, RS …… Rope line .

Claims (1)

[Claims] 1. A seat back having at least a first supporting portion, a second supporting portion and a third supporting portion capable of supporting the upper part of the latissimus dorsi of the occupant, and a seat cushion supporting the seat back. The support portion is along the ridgeline formed to have a width dimension of 215 mm to the left and right of the seat back centerline, and is 170 mm behind the vertical line passing through the hip point, along the torso line from the hip point. The first intersection point 291 mm above and 174, 190 and 186 mm behind the vertical line passing through the hip point, and 288 above the torso line from the hip point. , 310, 314 millimeters at the second to fourth intersections, and a straight line connecting the first intersection and the second intersection,
Similarly, it is located in an area surrounded by a straight line connecting the third intersection and the fourth intersection, a straight line connecting the first intersection and the fourth intersection, and a straight line connecting the second intersection and the third intersection, 2 The support portion is located 350 mm above the hip point along the torso line, and extends in the range of 214 mm to the left and right of the seat back centerline of the seat back, and to the rear approximately perpendicular to the torso line passing through the hip point. With the first intersection point where is 46 mm,
Similarly, 22 to the left and right from the seating center line of the seat back.
At a position of 0, 228, 221 mm, the size is 350 mm above the hip point along the torso line, and the dimension at a substantially right rear of the torso line passing through the hip point is 43, 58, 62, respectively. A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a straight line connecting the first intersection and the fourth intersection. When,
It is located in an area surrounded by a straight line connecting the second intersection and the third intersection, and the third support portion is the same as the second support portion and extends upward from the hip point along the torso line. Is 35
At the position of 0 mm, within the range of 154 mm to the left and right from the seating center line of the seat back, the first intersection point that is located 61 mm behind the torso line that passes through the hip point and at a position approximately 61 mm behind, and also the seat back of the seat back. The second to fourth intersections, which are located 158, 173, and 176 mm to the left and right of the seating center line, respectively, and are located at positions 65, 44, and 47 mm, respectively, approximately rearward of the torso line passing through the hip point. A straight line connecting the first intersection and the second intersection, and the third intersection and the fourth intersection.
A straight line connecting the intersections, a curve having a curvature of 120 millimeters connecting the first intersection and the third intersection having the rear side of the seat back as the center point, and a second curve having the rear side of the seat back as the center point. An automobile seat characterized by being positioned within an area surrounded by a curve having a curvature of 200 mm connecting the intersection and the fourth intersection.