JPH0194037A - Seat for automobile - Google Patents

Abstract

PURPOSE:To check any crosswise movement of the upper body of a rider in a positive manner by supporting an outer intercostal muscle equivalent part and its vicinity of the rider's upper body with both first and second supporting parts, while pushing a broad back muscle upper part upward with a third supporting part. CONSTITUTION:A seat back 6 to be supported on a seat cushion 7 has each of first - third supporting parts 1-3, while its size ranging from a hip point HP to the upper side along a torso line TR is 300mm, and it supports an outer intercostal muscle equivalent part and its vicinity of a rider's upper body with the first supporting part 1 to be formed in an interval of 150, 173mm in both directions from a seat center line and the second supporting part 2 at a position where the upper side size is 350mm. And, at the upper side 350mm position along the torso line TR from the hip point HP, a broad back muscle part is pushed upward by the third supporting part 3 formed in an interval of 154, 173mm in both directions. Thus, any crosswise movement of the rider's upper body is surely checked, so that steering wheel operation becomes nimble enough and, what is more, a feeling of fatigue can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automobile seat, and particularly to an automobile seat that supports the upper body of an occupant and does not cause fatigue even during long distance riding.

[Prior art]

For example, as a conventional automobile seat,
There is one as shown in the 2707 publication.

This automobile seat has a flat seat back.

[Problem that the invention seeks to solve]

However, according to such a conventional example, the occupant's upper body is not supported at all times, so it is easy to move from side to side. Therefore, the occupants try to suppress the movement of their bodies from side to side as much as possible, which puts strain on their arms and causes them to grip the steering wheel tightly. Therefore, there is a problem in that the handle cannot be operated smoothly and the user gets tired easily.

SUMMARY OF THE INVENTION The present invention has been made in view of these conventional problems, and it is an object of the present invention to provide an automobile seat that prevents the occupant from applying force to his or her upper body and reduces fatigue.

Means for Solving Problem C] In order to achieve the above object, the present invention provides a seat back having a first support part, a second support part, and a third support part that support the upper body of an occupant, and the seat back. The first supporting portion is located at a position where the upper dimension along the torso line from the hip point is 300 mm, and at a point 150 mm on each side from the seating center line of the seat back. , the first intersection with a point which is also at a position of 300 mm and whose dimension is approximately 55 mm perpendicularly rearward from the torso line passing through the hip point, and 15317 to the left and right of the seating center line of the seat back.
3, 176 mm points and the same 30
The dimension approximately perpendicularly rearward from the torso line passing through the hip point at the 0 mm position is 58°32,
A straight line having second to fourth intersection points with a point of 37 mm, a straight line connecting the first and second intersection points, a straight line connecting the third and fourth intersection points, and a straight line centered on the rear side of the seat back. 140 including the first and third intersection points
The second support is located within an area surrounded by a curved line having a curvature of 180 mm and a curved line having a curvature of 180 mm including second and fourth intersection points that also have the rear side of the seat back as a center point. The portion includes a point at a position where an upward dimension from the hip point along the torso line is 350 mm, and a point at which a dimension approximately perpendicularly rearward from the torso line passing through the hip point is 115 mm and 118 mm; 6 to the left and right of the seated center line
The third support part is located within an area surrounded by straight lines connecting the first to fourth intersection points with the millimeter point, and the third support part has an upper dimension of 350 mm along the torso line from the hip point. in position,
a first intersection between a point 154 mm to the left and right of the seating center line of the seat back and a point that is also 350 mm and has a dimension approximately perpendicularly rearward from the torso line passing through the hip point of 61 mm; Similarly, at points 158 mm, 173 mm, and 176 mm to the left and right of the seating center line of the seat back 6, respectively, and at a position of 350 mm, and approximately perpendicularly rearward from the torso line passing through the hip point, the dimensions are 65.44.47 mm. A straight line having second to fourth intersection points with the millimeter point, a straight line connecting the first and second intersection points, a straight line connecting the third and fourth intersection points, and a center point on the rear side of the seat back. The first
and a curved line having a curvature of 120 mm including the third intersection point, and a curved line having a curvature of 200 mm including the second and fourth intersection points that also have the rear side of the seat back as the center point. This is an automobile seat characterized by the following features:

[For production]

Since the present invention has such a configuration, the first support part and the second support part support the part of the occupant's upper body corresponding to the external intercostal muscle and the part thereof, and the third support part supports the upper part of the latissimus dorsi muscle. The vehicle is pushed upward, which reliably prevents the occupant's upper body from moving laterally, reducing force on the upper body, making steering operations easier, and reducing fatigue.

〔Example〕

1 to 6 are diagrams showing one embodiment of the present invention, and reference numeral S indicates a seat of the present invention that supports the upper body of an occupant, and the seat S includes a first support portion 1, a second support portion The seat back 6 includes a seat back 6 having a second and third support portion 3, and a seat cushion 7 that supports the seat back 6.

Before entering into detailed description, the terms used in this specification will be clarified here.

The "seating center line of the seat back" refers to the back pan of the JIS (Japanese Industrial Standard) D 4607-1977 three-dimensional sitting human body model for measuring dimensions of automobile interiors (3DM-JM50) (hereinafter simply referred to as the "human body model"). The left and right center plane of a curved board shaped like the back of the fuselage.

The ``hip point'' is the center of rotation between the torso and thigh of the ``human body model,'' which corresponds to the hip joint of the human body.

"Torso line" is the line (axis line of the fuselage) expressed when the torso bar, which is a standard rod for measuring the inclination angle of the back pan, touches the stopper of the back bracket, and is relative to the perpendicular line of this line. The rearward (direction A) inclination angle is called the torso angle, and is 26@ in the embodiment of the present invention.

As shown in FIG. A first intersection point 8a between a point of 150 mm each and a point of 55 mm at a position of 300 mm and approximately perpendicularly rearward from the torso line TR passing through the hip point HP, and the seat back 60.
153, 173, 1 on the left and right from the seating center line BC, respectively.
76 mm point and the same 300 mm position and the dimension approximately perpendicularly rearward from the torso line TR passing through the hip point HP is 58.32 mm.
2nd to 4th intersection points 8b with the point of ゜37mm
, 8c, 8d, and the first and second intersection $
A straight line 8W connecting between a and $b, a straight line 8X connecting the third and fourth intersections 8c and Bd, and the seat back 6
The first and third intersection points 8a, 8c centering on the rear side of
Curve 8 with a curvature R1 of 140 mm including
Y and a curve &518Z having a curvature R2 of 180 mm including the second and fourth intersections 8b and 8d, which also have the rear side of the seat back 6 as the center point. That's what I do.

In FIG. 1, reference numeral 14 denotes a pan frame made of FRP material that constitutes the back surface of the seat back 6 and the lower surface of the seat cushion 7. A pipe-shaped frame 9 is supported in a loop shape on the front surface of the pan frame 14. In front of the frame 9, a narrow side frame 10.11 is arranged.

The seat back 6 has a structure in which the frame 9 and side frames 10.11 are wrapped in a padding material 12 made of polyurethane foam material and covered with a skin 13 such as cloth.

As shown in FIG. 2, the frame 9 is located at a position where the upward dimension from the hip point HP along the torso line TR is 300 mm, and 191 mm to the left and right from the seating center line BC of the seat back 6. It is centered on the intersection point 9a of the mm point and a point that is also at a position of 300 mm and has a dimension approximately perpendicularly rearward of the torso line TR passing through the hip point HP of 55 mm.

As shown in FIG. 3, the second support portion 2 is located at a position where the upward dimension from the hip point HP along the torso line TR is approximately 350 mm, and approximately below the torso line TR passing through the hip point HP. A straight line 19W that connects the first to fourth intersection points 19a, 19b and 19c, 19d (not shown) of points whose rearward dimensions are 115 mm and 118 mm, respectively, and points 6 mm to the left and right of the seating center line BC. ,
It is located within an area 2A (hunting display) surrounded by 19X, 19Y (not shown), and 19Z.

In FIG. 2, the symbol 6' shown by a broken line along the seat back 6 is another example of the line on the front side of the seat back 6, and the shape shown by the solid line is suitable for automobiles with large lateral loads such as racing cars. The shape shown by the broken line is suitable for use in general-purpose automobiles.

As shown in FIG. 3, the third support portion 3 is located at a position where the upper dimension along the torso line TR from the hip point HP is 350 mm, and extends 154 mm to the left and right from the seating center line BC of the seat back 6. The first intersection point 21a between the mm point and the point having a dimension of 61 mm approximately perpendicularly rearward from the torso line TR, which is also at a position of 350 mm and passes through the above-mentioned hip point (HP), and the seating center line of the seat backfukuro. B
Points 158, 173, and 176 mm to the left and right from C, respectively, and a point that is also 350 mm and has a dimension of 65.44.47 mm approximately perpendicularly rearward from the torso line TR passing through the hip point HP. 2nd to 4th intersection points 21b, 2
1c, 21d, and a straight line 21W connecting the first and second intersections 21a and 21b, and the third and fourth intersections 21c.

21d, and the first and third intersection points 21a having the center point on the rear side of the seat pan black.

A curve 21Y having a curvature R1 of 120 mm including 21c, and a curve 20 including second and fourth intersection points 21b and 21d, which also have the center point on the rear side of the seat back 6.
It is arranged to be located within an area 3A (indicated by hatching) surrounded by a curve 21Z having a curvature R2 of 0 mm.

Specifically, as shown in FIGS. 4 and 5, the first and third supporting portions 1 and 3 are formed by fixing the side frame 10 to a bent portion 10a that bulges toward the outer skin 13 and to the bent portion 10a. The installed bracket) 10b, the bent part 10a and the bracket eye O
It consists of a pad material 12 arranged on the front side of b. In other words,
The load required to cause the original thickness of the pad material 12 (for example, 20 mm) to deflect by 25% (5 mm in the case of 20 mm) is set to 25 kg. The portion of the pad material 12 other than this 1.3 support portion 1.3 has the above-mentioned load of 16
As long as it weighs ~18 kg (for example, in terms of thickness, density, etc.). The second support part 2 has a sixth support part 2.
As shown in the figure, by bulging the pan frame 14 toward the skin 13, the space between the skin 13 and the bulging portion 14a of the pan frame 14 is narrowed, and the original thickness of the pad material 12 is adjusted as described above. For example, it is specified by setting the distance to 20 mm and the load to 25 kg.

Although it has been explained that the first and third supporting parts 1.3 are made up of the bent part 10a and the bracket lOb formed on the side frame 10, and the pad material 12, the present invention is not limited to this explanation. For example, a bulge may be formed in the pan frame 14. Alternatively, a spring may be stretched between the frames 9, a bent portion may be formed in the spring, and a bracket may be fixedly attached.

Furthermore, a sub-bracket may be installed between the side frames 10 and 11, a bent portion may be formed in the sub-bracket, and the bracket may be fixedly installed.

Moreover, although the figure shows the sheet S covered with a uniform skin 13, a member having higher hardness than other parts may be used only in the first to third support parts 1 to 3.

Therefore, according to this embodiment, the first support part and the second support part support the part corresponding to the external intercostal muscles of the upper body of most of the occupants (according to the measurement results, 98% of Japanese people) and the vicinity thereof. At the same time, the upper part of the latissimus dorsi muscle is pushed upward by the third support part, thereby reliably preventing the occupant's upper body from moving left and right around the hip point HP, allowing smooth steering operation without putting any force on the upper body. This allows you to do it with much less fatigue.

〔effect〕

As described above, according to the present invention, there is provided a seat back having a first support part, a second support part, and a third support part that supports the upper body of an occupant, and a seat cushion that supports the seat back. The first support portion is located at a position where the upper dimension along the torso line from the hip point is 300 mm, and at a point 150 mm on each side from the seating center line of the seat back.
153173 and 17 on the left and right from the seating center line of the seat back, respectively.
6 mm point and a torso also at 300 mm position and passing through said hip point.
It has second to fourth intersections with points approximately perpendicularly backward from the line by 58 degrees and 32 and 37 millimeters, and a straight line connecting the first and second intersections, and also between the third and fourth intersections. a straight line connecting them, a curved line having a curvature of 140 mm including first and third intersection points centered on the rear side of the seat back, and second and fourth intersection points also centered on the rear side of the seat back. 180 including
and a curved line having a curvature of millimeters, and the second support part supports the hip point at a position where the dimension from the hip point upward along the torso line is 350 mm. Points with dimensions of 115 mm and 118 mm approximately perpendicularly rearward from the torso line passing through, and 6 points to the left and right of the seating center line.
The third support part is located within an area surrounded by straight lines connecting the first to fourth intersection points with the millimeter point, and the third support part has an upper dimension of 350 mm along the torso line from the hip point. in position,
a first intersection between a point 154 mm to the left and right of the seating center line of the seat back and a point that is also 350 mm and has a dimension approximately perpendicularly rearward from the torso line passing through the hip point of 61 mm; Similarly, the dimensions are 65 degrees 44, 47 approximately perpendicularly rearward from the torso line passing through the hip point at points 158 degrees 173 and 176 millimeters to the left and right of the seating center line of the seat back, respectively, and at 350 millimeters respectively. A straight line having second to fourth intersections with the millimeter point, a straight line connecting the first and second intersection points, a straight line connecting the third and fourth intersection points, and a center point on the rear side of the seat back. A curved line having a curvature of 120 mm including the first and third intersection points, and a curve having a curvature of 200 mm including the second and fourth intersection points, which also have the rear side of the seat back as the center point. By supporting the occupant's upper body, it reliably prevents left and right movement, prevents force from being applied to the upper body, and enables smooth steering operation. , the effect of reducing the degree of fatigue can be obtained.

[Brief explanation of the drawing]

1 to 6 are diagrams showing one embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. FIG. 4 is a longitudinal sectional view of the 1.3 support section, FIG. 5 is a perspective view thereof, and FIG. 6 is a longitudinal sectional view of the second support section. S...Car seat, 1...First support part, 2...Second support part, 3...Third
Support part, 6... Seat back, 7...
Seat cushion, 3a, 19a. 21a...First intersection, 8b, 19b, 2
1b...Second intersection, 8c, 19c, 21
c...Third intersection, 8d, 19d. 21d...4th intersection, IA, 2A, 3A/old/
・Area, HP...Hip point, TR...
... Torso line, BC ... Seating center line. Shanogeki Non 1, Indication of the case 1988 Patent Application No. 250322 2, Name of the invention Automotive sheet 3, Person making the amendment Relationship to the case Patent applicant 399 Nissan Motor Co., Ltd. 4, Agent address 8143 2-1-8 Sanno, Ota-ku, Tokyo December 22, 1988 (all date of delivery) 6. Subject to amendment

Claims (1)

[Claims] A first support part, a second support part, and a third support part that support the upper body of an occupant.
Consisting of a seat back having a support part and a seat cushion supporting the seat back, the first support part is
The upper dimension along the torso line from the hip point is 300 mm, and the points are 150 mm each on the left and right from the seating center line of the seat back.
Similarly, at a position of 300 mm, the dimension approximately perpendicularly rearward from the torso line passing through the hip point is 5.
153173 to the left and right from the first intersection with the 5mm point and the seating center line of the seat back.
, having second to fourth intersection points of a point of 176 mm and points of 58, 32, and 37 mm at a position of 300 mm and approximately perpendicularly rearward from the torso line passing through the hip point, and It has a curvature of 140 mm including a straight line connecting the first and second intersection points, a straight line also connecting the third and fourth intersection points, and the first and third intersection points with the rear side of the seat back as the center point. and a curved line having a curvature of 180 mm including second and fourth intersection points that also have the rear side of the seat back as a center point, and the second support portion is located within an area surrounded by the At a position where the dimension from the point to the upper side along the torso line is 350 mm,
Surrounded by straight lines connecting the first to fourth intersections of points approximately perpendicularly rearward of 115 mm and 118 mm from the torso line passing through the hip point, and points 6 mm to the left and right of the seating center line, respectively. The third support portion is located at a position where the upper dimension along the torso line from the hip point is 350 mm, and at a point each 154 mm on the left and right from the seating center line of the seat back, A first point with a point that is also at a position of 350 mm and whose dimension is approximately perpendicularly rearward from the torso line passing through the hip point is 61 mm.
The intersection point, the points 158, 173, and 176 mm to the left and right of the seating center line of the seat back, and the dimensions 65, 44 approximately perpendicularly rearward from the torso line that also passes through the hip point at a position of 350 mm. , and a straight line connecting the first and second intersection points, a straight line connecting the third and fourth intersection points, and a straight line connecting the rear side of the seat back. Surrounded by a curved line having a curvature of 120 mm including the first and third intersection points with the center point, and a curve having a curvature of 200 mm including the second and fourth intersection points with the rear side of the seat back as the center point. An automobile seat characterized in that the seat is located within a closed area.