JP5741414B2 - Seat frame reinforcement structure for vehicle seat - Google Patents

Description

  The present invention relates to a seat frame reinforcing structure for a vehicle seat in which the seat frame is reinforced by a reinforcing member.

Conventionally, as a seat frame reinforcement structure of a vehicle seat, for example, Patent Document 1 discloses.
In this case, a seat frame is configured by including both side frames disposed in a confronting manner with a predetermined interval in the vehicle width direction, and rod members attached between the both side frames. The seat frame is reinforced by attaching both ends of the reinforcing member in an oblique state between the side frames.
(See for example).

JP-A-10-258862

By the way, in the above-described conventional seat frame reinforcing structure for a vehicle seat, the seat frame can be reinforced by a reinforcing member in which both ends are attached in an oblique state between both side frames.
However, when a load concentration portion exists in a part of the side frame, it is difficult to efficiently reinforce the load concentration portion.

  In view of the above problems, an object of the present invention is to provide a seat frame reinforcing structure for a vehicle seat that can efficiently reinforce a load concentrated portion of a side frame.

In order to solve the above-mentioned problems, a seat frame reinforcing structure for a vehicle seat according to a first aspect of the present invention includes both side frames disposed opposite to each other at a predetermined interval in the vehicle width direction, and the both sides. A seat frame reinforcing structure for a vehicle seat that reinforces a seat frame with a rod member attached between the frames by a reinforcing member,
The reinforcing member has a trapezoidal shape, the bottom of which passes through the vicinity of the load concentration portion of the one side frame and is attached to the side surface of the one side frame, and the upper side is attached to the rod member. And
The second plate portion is bent from one oblique side of the first plate portion, one end is attached to the side surface of the one side frame, and the other end is attached to the rod member. It is characterized by that.

According to the above configuration, the bottom side of the first plate portion of the reinforcing member passes through the vicinity of the load concentration portion of one side frame and is attached to the side surface of one side frame, thereby efficiently reinforcing the load concentration portion of the side frame. can do.
Moreover, the reinforcement member provided with the 1st board part and the 2nd board part can be easily formed by pressing a steel plate.

The seat frame reinforcing structure for a vehicle seat according to claim 2 is the seat frame reinforcing structure for a vehicle seat according to claim 1,
The rod member is formed of a square pipe material.

  According to the said structure, the upper side of the 1st board part which makes the trapezoid shape of a reinforcement member, and the other end of a 2nd board part can be stably attached to the rod member which consists of square pipe materials.

The seat frame reinforcing structure for a vehicle seat according to claim 3 is the seat frame reinforcing structure for a vehicle seat according to claim 1 or 2,
One end of the first plate portion of the reinforcing member is attached to a position away from the end of the rod member attached to the side surface of one side frame, and the other end is inclined toward the rod member from the one end. A rectangular plate portion attached to the rod member, and a triangular plate portion that is integrally formed with a bent portion from an edge portion of the rectangular plate portion to form a triangular shape.

  According to the above configuration, one end of the rectangular plate portion constituting the first plate portion of the reinforcing member is attached at a position away from the end portion of the rod member attached to the side surface of the one side frame. Deformation in the left-right direction can be satisfactorily suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a seat frame in which a vehicle seat frame reinforcing structure according to Embodiment 1 of the present invention is adopted. It is a perspective view which expands and shows the state where the reinforcement member was similarly attached to the cushion frame as a seat frame. It is a perspective view which isolate | separates and shows a cushion frame and a reinforcement member similarly.

  A mode for carrying out the present invention will be described in accordance with an embodiment.

A first embodiment of the present invention will be described with reference to the drawings.
In the first embodiment, the vehicle seat having a ratio of 6 out of the vehicle seats used in the rear seat disposed at the rear part of the passenger compartment and divided in a ratio of 6 to 4 in the vehicle width direction. Is illustrated.
As shown in the figure, a cushion frame (corresponding to a seat frame of the present invention) 11 forming a skeleton part of a seat cushion of a vehicle seat has first to third sides facing each other at a predetermined interval in the vehicle width direction. A front frame 15 for connecting the frames 12, 13, 14 to the front portions of the first to third side frames 12, 13, 14 and a rear rising portion of the first to third side frames 12, 13, 14 The rod member 16 which connects the upper part of 12a, 13a, 14a is provided, and it has comprised integrally.
In the first embodiment, the rod member 16 is formed of a square pipe material having a long cross section in the front-rear direction.

As shown in FIG. 2, the front edge 13 b of the rear rising portion 13 a of the second side frame 13 extends upward in a curved shape from the rear end of the general portion of the second side frame 13.
The rear rising portion 13a of the second side frame 13 is provided with a mounting hole 13c that is positioned at the front upper portion of the rod member 16 and fastens the terminal fixture 18 of the seat belt buckle 17 with a bolt 19. ing.
Thereby, when an impact load is applied to the seat belt, the load is transmitted to the rear rising portion 13a of the second side frame 13 through the mounting hole 13c, and the vicinity of the root portion 13d of the rear rising portion 13a is loaded. It becomes a concentrated part.
Therefore, in the first embodiment, the second side frame 13 and the third side frame of the rod member 16 are used to efficiently reinforce the base portion vicinity 13d of the rear rising portion 13a of the second side frame 13. The reinforcing member 20 is attached across the portion of the rod member 16 extending between the first side frame 14 and the second side frame 13.

As shown in FIGS. 2 and 3, the reinforcing member 20 includes an upper plate portion 21 as a first plate portion integrally formed by pressing a steel plate, and an inclined plate portion 24 as a second plate portion. And.
The upper plate portion 21 has a substantially trapezoidal shape, and the bottom side 21a extends from the side surface of the rear side rising portion 13a of the second side frame 13 through the vicinity of the root portion vicinity 13d as a load concentration portion. It is attached to the side surface of 13 general parts by welding or the like. Further, the upper side 21 b of the trapezoidal shape of the upper plate portion 21 is attached to the upper surface of the rod member 16 by welding or the like.
The inclined plate portion 24 is bent at a right angle downward from the front oblique side of the upper plate portion 21, and one end (end portion on the bottom side 21 a side) is welded to the side surface of the general portion of the second side frame 13. It is attached. Further, the other end (upper side 21b side end) of the inclined plate portion 24 is attached to the front side surface of the rod member 16 by welding or the like.

Further, in the first embodiment, the upper plate portion 21 of the reinforcing member 20 includes a rectangular plate portion 22 and a triangular plate portion 23 in an integrated continuous form, and has a substantially trapezoidal shape.
One end of the rectangular plate portion 22 is attached to a position separated from the end portion of the rod member 16 attached to the side surface of the rear rising portion 13a of the second side frame 13 by a predetermined height, and the rod member extends from the one end. The other end is attached to the upper surface of the rod member 16 by welding or the like.
The triangular plate portion 23 is bent slightly downward from the front edge portion of the rectangular plate portion 22 with a bent portion 23a, and an inclined plate portion 24 is bent on one side thereof.

As shown in FIG. 1, a back frame 41 that forms a skeleton part of a seat back of a vehicle seat includes first to third side frames 42, 43, and 44 that face each other at a predetermined interval in the vehicle width direction. And an upper frame 45 for connecting the upper parts of the first to third side frames 42, 43, 44 and a lower rod member 46 for connecting the lower parts of the first to third side frames 42, 43, 44. There is no.
Then, the seat back 40 has rear rising portions 12a of the first and second side frames 12 and 13 of the cushion frame 11 below the first and second side frames 42 and 43 of the back frame 41. , 13a are mounted so as to be adjustable in inclination via a reclining lower arm 30 and a reclining mechanism 31.
In addition, the armrest is placed between the use position and the retracted position at two places, the lower rod member 46 portion between the second and third side frames 43 and 44 and the lower portion of the third side frame 44. Brackets 50 and 52 are attached for pivotal mounting.

The seat frame reinforcing structure for a vehicle seat according to the first embodiment is configured as described above.
Therefore, as shown in FIGS. 2 and 3, the bottom side 21 a of the upper plate portion 21 of the reinforcing member 20 passes through the vicinity 13 d (load concentration portion) of the rear side rising portion 13 a of the second side frame 13. By being attached to the side surface of the second side frame 13, the vicinity 13 d of the root portion of the rear side rising portion 13 a of the second side frame 13 can be efficiently reinforced.
In the first embodiment, when an impact load acts on the seat belt and the load is transmitted to the rear side rising portion 13a of the second side frame 13 through the mounting hole 13c, the load is transmitted by the reinforcing member 20. Can be received in a distributed manner. For this reason, it can avoid that a load concentrates and deform | transforms into the base part vicinity 13d of the rear side rising part 13a.
The reinforcing member 20 including the upper plate portion 21 and the inclined plate portion 24 can be easily formed by pressing a steel plate.

  Further, in the first embodiment, as shown in FIGS. 2 and 3, the upper side 21b of the upper plate portion 21 of the reinforcing member 20 is placed on the upper surface of the rod member 16 made of a square pipe material, and the other end 24b of the inclined plate portion 24. Can be stably attached to the front side surface of the rod member 16 by welding or the like.

  In the first embodiment, one end (a part of the bottom side 21 a) of the rectangular plate part 22 constituting the upper plate part 21 of the reinforcing member 20 is attached to the side surface of the second side frame 13. It is attached at a position away from the end upward. For this reason, the deformation in the left-right direction of the second side frame 13 can be satisfactorily suppressed by the reinforcing member 20.

In addition, this invention is not limited to the said Example 1, In the range which does not deviate from the summary of this invention, it can implement with a various form.
For example, the seat frame reinforcing structure for a vehicle seat according to the first embodiment includes the portion of the rod member 16 extending between the second side frame 13 and the third side frame 14 of the cushion frame 11 and the second side frame. Although the case where the reinforcement member 20 was attached straddling between the frames 13 was illustrated, it can also be adopted in other portions.
Further, the seat frame can be applied to the back frame 41 in addition to the cushion frame 11.

10 Seat cushion 11 Cushion frame (seat frame)
12 First side frame 13 Second side frame 14 Third side frame 16 Rod member 20 Reinforcing member 21 Upper plate portion (first plate portion)
22 Rectangular plate portion 23 Triangular plate portion 24 Inclined plate portion (second plate portion)

Claims (3)

A seat for a vehicle seat that reinforces a seat frame having both side frames disposed opposite to each other at a predetermined interval in the vehicle width direction and a rod member attached between the both side frames by a reinforcing member. A frame reinforcement structure,
The reinforcing member has a trapezoidal shape, the bottom of which passes through the vicinity of the load concentration portion of the one side frame and is attached to the side surface of the one side frame, and the upper side is attached to the rod member. And
The second plate portion is bent from one oblique side of the first plate portion, one end is attached to the side surface of the one side frame, and the other end is attached to the rod member. A structure for reinforcing a seat frame of a vehicle seat. The vehicle seat frame reinforcing structure according to claim 1,
A seat frame reinforcing structure for a vehicle seat, wherein the rod member is formed of a square pipe material. A vehicle seat frame reinforcing structure according to claim 1 or 2,
One end of the first plate portion of the reinforcing member is attached to a position away from the end of the rod member attached to the side surface of one side frame, and the other end is inclined toward the rod member from the one end. What is claimed is: 1. A vehicle seat comprising: a rectangular plate portion attached to a rod member; and a triangular plate portion formed integrally with a bent portion from an edge portion of the rectangular plate portion to form a triangular shape. Seat frame reinforcement structure.

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