JP3492500B2 - Seat back frame structure for automotive seat equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a seat back frame provided in a seat back of a seat in an automobile seat device capable of being loaded behind the seat. It is. 2. Description of the Related Art Conventionally, a seat back frame structure of the above-mentioned seat apparatus for an automobile has been disclosed in Japanese Unexamined Utility Model Publication No. 2-14124.
There is one disclosed in Japanese Patent Publication No. According to this, the seat back frame of the seat back is placed on the seat back frame.
An upper and lower frame that constitutes a lower end portion and extends in the vehicle width direction, and a side frame that constitutes each side end of the seat back frame and connects each end of the upper and lower frames to each other; And an inclined frame having one end coupled to the left end of the upper frame and the other end coupled to the right end of the lower frame or the lower end of the side frame. In the above case, when viewed from the front of the seat back, the first space surrounded by the upper frame, the right side frame, and the inclined frame has an inverted triangular shape. On the other hand, the second space surrounded by the lower frame, the left frame, and the inclined frame has an erecting triangular shape. [0005] The seat back generally includes a pad attached to the front side of the seat back frame, and a bag-shaped skin that integrally covers the seat back frame and the pad. [0006] By the way, the seat of the prior art is applied to, for example, a cabin of a one-box car, and has a shape elongated in the vehicle width direction so as to extend over substantially the entire width of the cabin. It is possible to do. In the above-described automobile, if the vehicle is suddenly braked while traveling with the luggage loaded behind the seat, the luggage moves forward by its inertia and collides with the rear surface of the seat back. In this case, the first space has an inverted triangular shape, and the width of the lower portion is small. Therefore, even if the luggage moving forward enters the first space, the luggage remains on the inclined frame. It is blocked by the collision, so that the skin or the like corresponding to the first space is prevented from being damaged by the load from the load. However, the second space is in the shape of an erect triangle and has a large width at the lower portion and a height reaching the upper portion of the seat back, so that the second space is a wide space. The luggage moved toward the space side does not collide with the inclined frame and tries to enter the second space, collides vigorously with a skin or the like corresponding to the second space, and does not have sufficient strength. There is a possibility that these epidermis and the like may be significantly damaged. The present invention has been made in view of the above-mentioned circumstances, and when a load loaded behind a seat collides with the rear surface of the seat back during sudden braking or the like, the seat back can be easily replaced. It is an object of the present invention to prevent breakage. [0010] In order to solve the above-mentioned problems, a seat back frame structure in a vehicle seat apparatus according to the present invention is provided with a seat 14 extending over almost the entire width of the cabin 8 in the cabin 8. And behind the seat 14
Luggage room 12 in which luggage 11 can be loaded
And to have a seat back 16 that the sheet 14 protrudes upward from the vehicle compartment floor 4 side of the cabin 8, the seat back frame 19 of the seat back 16, on the seat back frame 19, the lower end Upper and lower frames 22 and 23 extending in the vehicle width direction and constituting the side ends of the seat back frame 19 and connecting the respective ends of the upper and lower frames 22 and 23 to each other. A pair of left and right hinges 17 for pivotally supporting each lower side of the seat back frame 19 to the vehicle cabin floor (body stationary side) 4, and a vehicle width of the upper frame 22. A seat device for a motor vehicle provided with a locking member 28 for locking the central portion 22a in the direction to the connecting frame (stationary side of the vehicle body) 6 in a detachable manner. A pair of left and right inclined frames 2 whose ends are connected to the central portion 22a of the upper frame 22 and the other ends are connected to the respective ends of the lower frame 23 and / or the lower ends of the side frames 24.
5 and a horizontal frame 26 extending substantially linearly and each end of which is connected to each of the longitudinally intermediate portions of the left and right inclined frames 25, 25.
The end portion is located near each of the hinges 17 and the locking member 28 . Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show an embodiment of the present invention. In the figure, reference numeral 1 denotes an automobile, and an arrow Fr indicates the front thereof. The vehicle body 2 of the automobile 1 is made of sheet metal, and has left and right side walls 3 and 3 at the vehicle body stationary side, a cabin floor 4 installed at the lower end of the side walls 3 and 3, and an upper end of the side walls 3 and 3. The vehicle includes a roof 5 to be installed, and a connecting frame 6 made of pipes installed on the left and right side walls 3 and 3.
The connection frame 6 has sufficient strength and rigidity, and functions as a reinforcing material for improving the strength and rigidity of the vehicle body 2. The interior space of the vehicle body 2 surrounded by the left and right side walls 3 and 3, the cabin floor 4 and the roof 5 is a cabin 8. An occupant (including passengers) in the middle part in the front-rear direction of the cabin 8
A seat device 10 for seating 9 is provided, and a rear portion of the vehicle room 8 behind the seat device 10 is a luggage room 12 in which luggage 11 can be loaded. Reference numeral 13 in FIG.
Indicates the center of the vehicle body 2 in the vehicle width direction, and the vehicle body 2 is substantially symmetric with respect to the center 13. The seat device 10 has a seat 14 extending over substantially the entire width of the cabin 8. The seat 14 has a seat cushion 15 supported by the vehicle floor 4 and a seat cushion 15 near the rear end of the seat cushion 15.
A seat back 16 which projects upward from the vehicle cabin floor 4 side to take an upright posture; and a pair of left and right hinges 17 for pivotally supporting the seat back 16 to the vehicle cabin floor 4 back and forth. I have. The seat cushion 15
The occupant 9 can be seated on the seat cushion 15.
The occupant 9 seated on the vehicle can rest on the seat back 16 in the upright posture. The seat back 16 has a seat back frame 19 framed by a circular pipe material, and is mounted on a front side of the seat back frame 19 so as to entirely cover the front side of the seat back frame 19 (not shown). And a bag-like skin 20 that integrally covers the seat back frame 19 and the pad. The seat back frame 19 forms upper and lower ends of the seat back frame 19 and extends in the vehicle width direction, and upper and lower frames 22, 23, and each side of the seat back frame 19 in the vehicle width direction. Side frames 24, 2 which form end portions and extend in the vertical direction, and connect the respective end portions of the upper and lower frames 22, 23 in the vehicle width direction.
A pair of left and right inclined frames 25 extending substantially linearly, one end of which is connected to the central portion 22a of the upper frame 22 and the other end of which is connected to each end of the lower frame 23; A laterally extending frame 26, which extends horizontally and substantially horizontally and whose ends are joined to the longitudinally intermediate portions of the left and right inclined frames 25, 25, respectively. The hinges 17 are for pivotally supporting the lower portions of the seat back frame 19 to the vehicle cabin floor 4 on the vehicle body stationary side, and include a bracket 17a protruding from the vehicle cabin floor 4. A pivot 17b for pivotally supporting the seat back frame 19 is provided on the bracket 17a, with the pivot 17b of each hinge 17 being the center.
The seat back 16 in the standing posture shown in the drawing is reciprocally rotatable toward the front thereof. As shown by a dashed line in FIG. 2, if the seat back 16 is rotated forward,
6 is foldable on the seat cushion 15. From the folded state, the seat back 16
When the seat back 16 is rotated backward in the upright posture, a locking member 28 for locking the seat back 16 to the connection frame 6 so as to be detachable is provided. The back 16 is supported by the connecting frame 6 so as to remain in the upright posture. The locking member 28 is connected to the upper frame 22.
And the center portion 22a in the vehicle width direction of the connecting frame 6 is detachably engaged with the center portion of the connecting frame 6 in the vehicle width direction. The locking member 28 is a locking member attached to the connecting frame 6. It has a main body 29 and a striker 30 attached to the central portion 22a of the upper frame 22 so as to be detachably engaged with the main body 29. The front view of the seat back 16 (FIG. 1)
The upper frame 22, the side frames 24, 2
4, and a pair of left and right first spaces 32 surrounded by the respective inclined frames 25, 25 have an inverted triangular shape, and the width of the lower part thereof is small. The horizontal frame 26 is located in the middle part (substantially at the center) of the seat back frame 19 in the vertical direction. Therefore, the lower frame 23, the left and right inclined frames 25, 25, and the horizontal frame 26 The trapezoidal second space 33 surrounded by is a low-height space, and the triangular third space 34 surrounded by the left and right inclined frames 25, 25 and the horizontal frame 26 is also low in height. It is a space. Thus, for example, when the luggage 11 moves forward due to sudden braking or the like while the vehicle 1 loaded with luggage 11 behind the seat back 16 of the seat 14 moves, the luggage 11 is moved to one of the above-mentioned positions. When the cargo 11 collides with the inclined frame 25 and / or the horizontal frame 26, it is interrupted, and the skin 20 and the like corresponding to each of the spaces 32 to 34 are also blocked. It is prevented from being damaged by the load of the load 11, that is, the seat back 1
6 is prevented from being damaged. Further, as described above, when the load 11 collides with the inclined frame 25 or the horizontal frame 26,
The loads applied to the inclined frame 25 and the horizontal frame 26 are transmitted from the respective ends of the inclined frame 25 to the upper and lower frames 22, 23 and the side frames 24, and the hinges 17 and the locking members 28 Is supported by the cabin floor 4 and the connection frame 6 through
Since each end of the inclined frame 25 is located near each of the hinges 17 and the locking members 28, the load applied to the inclined frame 25 and the horizontal frame 26 from the load 11 is Thus, the lower frames 22, 23 and the side frames 24 are directly supported by the above-mentioned vehicle floor 4 and the connecting frame 6 without generating unnecessary load (bending moment). Therefore, the load from the load 11 is strongly supported by the inclined frame 25 and the horizontal frame 26, and the load 11 attempts to enter any of the spaces 32 to 34. Is more reliably blocked, so that the seat back 16 is more reliably prevented from being damaged. Although the above description is based on the illustrated example, the seat back 16 may be pivotally supported at the rear end of the seat cushion 15 by a hinge 17, that is, the seat back 16 is provided at the rear end of the seat cushion 15. It may be pivotally supported on the vehicle cabin floor 4 via a part. Further, the other end of each of the inclined frames 25 is coupled to each of the ends of the lower frame 23, or in place of this,
You may couple | bond with each lower end part of the said side frame 24. The seat device 10 of the automobile 1 shown in FIG.
Is a comparative example with respect to the embodiment of the present invention. Since the basic configuration is the same as that of the above-described embodiment of the present invention, common components are denoted by common reference numerals and description thereof is omitted. I do. The seat back 16 of the seat 14 of the seat device 10 is replaced with upper and lower frames 22, 23 and side frames 24, 23 instead of the inclined frames 25 and the horizontal frames 26 in the embodiment of the present invention. 24, a sheet metal plate 36 is provided so as to cover the entire space surrounded by the plate 24. A plurality of press-formed beads 37 are formed on the plate member 36 in order to improve its strength and rigidity. According to the seat back 16 described above, it is considered that damage due to collision with the load 11 can be prevented. However, since the plate member 36 is heavy, the one according to the embodiment of the present invention is employed. Is preferred. According to the present invention, the vehicle compartment is provided with a seat extending over substantially the entire width of the vehicle compartment, and the seat is provided behind the seat.
The above cabin is a luggage room where luggage can be loaded,
The seat has a seat back protruding upward from the cabin floor side of the cabin, and the seat back frame of the seat back is located above the seat back frame.
Upper and lower frames that constitute a lower end portion and extend in the vehicle width direction, and a side frame that constitutes each side end of the seat back frame and couples each end of the upper and lower frames to each other, A pair of left and right hinges for pivotally supporting the respective lower portions of the seat back frame to the vehicle body stationary side, and latching the central portion of the upper frame in the vehicle width direction to be detachably engaged with the vehicle body stationary side. In the seat device of the vehicle provided with the fittings, it extends substantially linearly and has one end connected to the center of the upper frame and the other end connected to each end of the lower frame and / or the side frame. a pair of left and right inclined frames that are coupled to each bottom end, and a transverse frame each end thereof extends substantially linearly is coupled to each intermediate portion of the longitudinal direction of the lateral inclination frame provided, the inclined full
Position each end of the frame near each of the hinges and fasteners.
I have. Therefore, when the seat back is viewed from the front,
A pair of left and right first spaces surrounded by the upper frame, the respective side frames, and the respective inclined frames form an inverted triangular shape, and a width dimension of a lower portion thereof is reduced. Further, the horizontal frame is located at an intermediate position in the vertical direction of the seat back frame. Therefore, the trapezoidal second space surrounded by the lower frame, the left-right inclined frame, and the horizontal frame includes: The third space, which is a space having a low height and is surrounded by the left and right inclined frames and the horizontal frame, is also a space having a low height. Therefore, for example, when the luggage moves forward due to sudden braking or the like while the vehicle loaded with luggage behind the seat back of the seat travels, the luggage may enter any of the above spaces. Even so, this prevents the load from colliding with the inclined frame and / or the horizontal frame, thereby preventing the skin corresponding to each space from being damaged by the load of the load, that is, The seat back is prevented from being damaged. Moreover, when the load collides with the inclined frame or the horizontal frame as described above, the load applied to the inclined frame or the horizontal frame is transferred from each end of the inclined frame to the upper frame, the lower frame or the side frame. together is transmitted to the frame, but will be supported by the vehicle body stationary side via the hinge and locking tool, the ends of the tilting <br/> oblique frame as described above, each of the hinge and locking tool , The load applied to the inclined frame or the horizontal frame from the luggage does not cause unnecessary loads (bending moments) on the upper, lower frames and the side frames. It is more directly supported on the stationary side of the vehicle body. Therefore, the load from the load is firmly supported by the inclined frame and the horizontal frame, so that the load is prevented from entering any of the spaces more reliably. Therefore, breakage of the seat back is more reliably prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a seat device according to an embodiment of the present invention. FIG. 2 is a side view of the seat device according to the embodiment of the present invention. FIG. 3 is a diagram corresponding to FIG. 1, showing a comparative example with respect to the embodiment of the present invention. [Description of Signs] 1 Automobile 2 Body 3 Side wall (body stationary side) 4 Cabin floor (body stationary side) 6 Connecting frame (body stationary side) 8 Cabin 9 Occupant 10 Seat device 11 Luggage 12 Luggage room 14 Seat 15 Seat Cushion 16 Seat back 17 Hinge 19 Seat back frame 20 Skin 22 Upper frame 22a Central part 23 Lower frame 24 Side frame 25 Inclined frame 26 Sideways frame 28 Locking device 32 First space 33 Second space 34 Third space

Claims (1)

(57) [Claims 1] A vehicle seat is provided with a seat extending over substantially the entire width of the vehicle compartment, and the vehicle compartment behind the seat is loaded with luggage.
A possible luggage compartment , wherein the seat has a seat back projecting upward from the cabin floor side of the cabin, and the seat back frame of the seat back forms upper and lower ends of the seat back frame An upper and lower frame extending in the vehicle width direction, and a side frame that constitutes each side end of the seat back frame and couples each end of the upper and lower frames to each other, the seat back frame comprising: A pair of left and right hinges for pivotally supporting each lower portion of the upper frame to the vehicle body stationary side is provided, and a locking tool for detachably locking the central portion of the upper frame in the vehicle width direction to the vehicle body stationary side is provided. In a seat apparatus for an automobile, one end part is connected to the center part of the upper frame and the other end part is connected to each end part of the lower frame and / or each lower end part of the side frame. A pair of right and left inclined frame being, and a transverse frame provided at each end extending substantially linearly is coupled to each intermediate portion of the longitudinal direction of the lateral inclination frame, each end of the inclined frame
A seat back frame structure in an automobile seat device in which a portion is located near each of the hinges and the locking members .