JP6074500B2 - Vehicle seat - Google Patents

Description

The present invention relates to a seat for use in a vehicle, for example, an automobile.

Patent Document 1 proposes a vehicle seat in which first and second lean reinforcement frames are provided in a seat cushion frame and a seat back frame so as to divide them into left and right. In this vehicle seat, the rear end portion of the seat cushion frame along the first lean reinforcement frame, the upper end portion of the seat back frame along the second lean reinforcement frame, and the end portion of the seat cushion frame are provided. A three-point seat belt connecting the buckle is provided, and the partition region of the seat cushion frame including the measuring portion partitioned by the first lean reinforcement frame is relatively set with respect to the partition region of the second lean reinforcement frame. It is easy to deform. The first lean reinforcement frame and the second lean reinforcement frame are connected via a reclining device, and the seat back frame can be rotated forward and backward.

JP 2006-321284 A

In the above-described vehicle seat, the lean reinforcement frame is provided on both the seat cushion frame and the seat back frame, so that the weight increases. In addition, since the seat is a six-part split side of a so-called 6: 4 split seat, the first lean reinforcement frame comes directly under the right buttock of the person sitting on the left side (left and right center side as an automobile). For this reason, it is necessary to cover with a cover so that the seat cushion does not get caught in the gear or the like of the reclining device, the thickness of the cushion portion becomes thin and the seating comfort is poor, and the manufacturing cost increases as much as the cover is required.

An object of the present invention is to provide a vehicle seat that is lightweight, comfortable to sit, and capable of reducing manufacturing costs.

The vehicle seat according to the embodiment includes a seat cushion frame for 60% of a 6: 4 split seat in a vehicle and a seat cushion frame for 2 seats on the 60% side of the 6: 4 split seat. A second seat back frame; a first seat back supported by the first seat back frame; a second seat back supported by the second seat back frame; and the seat cushion frame. And a reclining device that holds the first and second seat back frames so as to be pivotable forward and backward, and the first and second seat back frames in the first and second seat backs. Between the first and second seat backs and the left and right compartment positions, and the first and second seat frames. Crosslinked to the lower end of the back frame, and a lower cross member for supporting the lower end of the reinforcement reinforcement frame.
In addition, the lower cross member includes an in lower cross member on the center side of the vehicle from the position where the lean reinforcement frame is disposed, and an out lower cross member which is not on the center side of the vehicle from the position where the lean reinforcement frame is disposed. The in-lower cross member has higher rigidity than the out-lower cross member.

According to the above configuration, there is no lean reinforcement frame on the seat cushion frame side. For this reason, the vehicle seat is light. In addition, since the thickness of the cushion portion can be ensured, the sitting comfort of the vehicle seat can be improved. Further, since there is no reclining device on the lean reinforcement frame side, a cover for covering the reclining device is unnecessary, and the manufacturing cost of the vehicle seat can be remarkably reduced.

According to the above configuration, the rigidity of the out lower cross member that is not on the center side of the vehicle is lower than the rigidity of the in lower cross member on the center side of the vehicle than the lean reinforcement frame. For this reason, it is possible to absorb an impact caused by sudden acceleration or deceleration.

In addition, another reclining device is provided that can hold the seat back on the center side of the vehicle at a predetermined angle of the first and second seat backs, and the seat back on the center side is tilted forward and occupant elbow may be it can be supported der of.

According to the above configuration, the seat back on the center side of the vehicle can be held in a standing state by the reclining device. For this reason, even if an impact is applied from the rear side of the vehicle seat due to a sudden movement of the load, it can sufficiently withstand. Therefore, a member for protecting the back of the vehicle seat is not required, and the cost of the vehicle seat can be reduced accordingly. Further, since the seat back can be held at an appropriate position by the reclining device, it is possible to appropriately cope with the posture of the passenger.

The reclining device includes an outer reclining device and an inner reclining device, and the vehicle seat is supported by the rear cross member bridged between the outer reclining device and the inner reclining device, and the rear cross member. a base bracket which is, and the supported on the base bracket buckle may further Bei forte a.

FIG. 1 is a perspective view of a vehicle seat according to an embodiment of the present invention. FIG. 2 is a perspective view of the vehicle seat with the skin and cushion of FIG. 1 removed. FIG. 3 is a front view of a vehicle seat from which the safety belt retractor is omitted from FIG. FIG. 4 is a perspective view of a vehicle seat in a state where the seat back of FIG. 2 is armrested. FIG. 5 is a side view of the seat back in the state of FIG.

The objective of providing a vehicle seat that is lightweight, comfortable to sit on, and that can reduce manufacturing costs has been realized with the following configuration. That is, the vehicle seat has a seat cushion frame for 60% of a 6: 4 split seat for two persons and the first and second seats for 60% of the 6: 4 split seat for two persons. A back frame; a first seat back supported by the first seat back frame; a second seat back supported by the second seat back frame; and the seat cushion frame; A reclining device for holding the first and second seat back frames so as to be pivotable back and forth, and between the first seat back frame and the second seat back frame in the first and second seat backs. A lean reinforcement frame provided at left and right partition positions of the first and second seat backs, and the first and second seat back frames. Crosslinked to an end, and a lower cross member for supporting the lower end of the reinforcement reinforcement frame.

Hereinafter, a vehicle seat 1 according to an embodiment of the present invention will be described with reference to FIGS. FR, RR, UP, LWR, RH, and LH in the figure respectively indicate front, rear, upper, lower, right, and left with respect to the traveling direction of the automobile. The vehicle seat 1 is a 6: 4 divided seat divided into 6: 4 in the left and right directions LH and RH. The vehicle seat 1 includes a 40% single-seat seat 2 and a 60% double-seat seats 3 and 4. Two-seat seats 3 and 4 are a right seat (hereinafter referred to as a right seat) 3 arranged in the right direction RH, and a central seat (hereinafter referred to as a center seat) 4 arranged in the left direction LH. It becomes more.

The right seat 3 includes a seat cushion 5, a seat back 6, and a headrest 7. The central seat 4 includes a seat cushion 8, a seat back 9, and a headrest 10. The single seat 2 includes a seat cushion 11, a seat back 12, and a headrest 13.

A first buckle 14 that is a buckle is provided on the left side LH of the central seat 4. A safety belt 15 is provided on the right side RH of the central seat 4. The tongue plate 16 of the safety belt 15 engages with the first buckle 14 as shown by a two-dot chain line in FIG. 1 so that the shoulders and knees of a passenger (not shown) seated on the central seat 4 can be held. . A third buckle 19 that is a buckle is provided on the left side LH of the right seat 3. By engaging a tongue plate (not shown) with the third buckle 19, the shoulder and knee of a passenger (not shown) seated on the right seat 3 can be held. A second buckle 17 that is a buckle is provided on the right side RH of the single-seat seat 2. A tongue plate (not shown) is engaged with the second buckle 17 so that the shoulders and knees of an occupant (not shown) seated on the single seat 2 can be held. In the lower part of the seat cushions 5, 8, 11, there are provided recesses 18 formed so as not to interfere with fixed rails 20, 21 described later. Although the fixed rails 20 and 21 are exposed from the concave portion 18, the illustration of the fixed rails 20 and 21 is omitted in FIG.

The fixed rails 20 and 21 are fixed to the floor 50 of the automobile and are formed symmetrically. As shown in FIG. 2, the fixed rails 20 and 21 have a substantially U-shaped cross section with the front end facing inward, and are formed long in the front and rear FR and RR. Lock holes are formed in the fixed rails 20 and 21 at appropriate front-rear intervals. The movable rails 22 and 23 are engaged with the fixed rails 20 and 21. The movable rails 22 and 23 can move forward and backward FR and RR, and the movement can be locked by engaging the lock holes of the fixed rails 20 and 21 at appropriate positions. Such basic structures as the fixed rails 20 and 21 and the movable rails 22 and 23 are well-known techniques such as those disclosed in Japanese Patent Application Laid-Open No. 2004-243811.

A front cross member 26 and a rear cross member 27 made of substantially straight pipes are bridged in the left and right directions LH and RH via the legs 24 and 25 on the movable rails 22 and 23.

A seat cushion frame 28 made of a closed loop pipe is provided on the upper side UP of the front cross member 26 and the rear cross member 27 via a flip-up mechanism 30. The seat cushion frame 28 is provided with three spring bars 29 in the front-rear directions FR and RR.

A side bracket 51 is held at an end of the right side RH of the rear cross member 27 via an outer reclining device 31 so as to be movable and lockable at an appropriate angle.

The side bracket 51 is supported by welding on the side portion 39b of the seat back frame 39 which is a skeleton of the seat back 6. The seat back frame 39 includes a side portion 39b and an upper portion 39a having an inverted L shape with respect to the side portion 39b.

A tower frame 52, which is a lean reinforcement frame, hangs down from the left LH end of the upper portion 39a. A cross pipe 40 is bridged between the side portion 39 b and the tower frame 52.

Between the side bracket 51 and the tower frame 52, an outer lower member 41, which is a lower cross member, is bridged. The outer lower member 41 has, for example, an outer diameter of 38.1 millimeters and a plate thickness of 2 millimeters. The lower cross member 42, which is a lower cross member, is bridged between the tower frame 52 and an arm 37a described later. The inner lower member 42 has, for example, an outer diameter of 42.7 millimeters and a plate thickness of 2 millimeters. The out lower cross member 41 may be bridged between the side bracket 51 and the arm 37a, and the in lower cross member 42 may cover the upper lower cross member 41 between the tower frame 52 and the arm 37a.

An arm 37 a is held at an end of the left side LH of the rear cross member 27 via an inner reclining device 37 so as to be movable and lockable at an appropriate angle. An arm 47 is supported on the arm 37a by welding via a reclining device 38. The arm 47 is supported by welding on a side portion 46c of the seat back frame 46 which is a skeleton of the seat back 9.

The seat back frame 46 includes an upper portion 46a, a side portion 46b on the tower frame 52 side, and a side portion 46c on the one-seat seat 2 side.

A base bracket 36 is supported on the upper surface of the rear cross member 27 by welding. The base bracket 36 has an iron plate shape along the upper surface of the rear cross member 27. Before the base bracket 36 is attached to the upper surface of the rear cross member 27 by welding, the third buckle 19, the tether anchor 33, the safety belt anchor 34, and the second ISO fix anchor 35 are attached to the base bracket 36 by welding in advance. ing. A first ISO fix anchor 32 is supported on the upper surface of the rear cross member 27 by welding.

A retractor bracket 43 is supported by welding at the end of the left side LH of the cross pipe 40. A safety belt retractor 44 is fixed to the upper end portion of the retractor bracket 43. A belt guide 45 is supported on the upper portion 39 a of the seat back frame 39. The safety belt 15 shown in FIG. 1 is supported by a safety belt retractor 44 so as to be rewound, and passes through a belt guide 45 from the safety belt retractor 44. The upper portion 39a of the seat back frame 39 is provided with a stay holder 7a that supports a headrest stay (not shown) of the headrest 7. Similarly, a stay holder 10 a that supports a headrest stay (not shown) of the headrest 10 is provided in the upper portion 46 a of the seat back frame 46.

A second arm 48 is fixed to the side portion 46 b of the seat back frame 46. The second arm 48 is pivotally supported on the tower frame 52 by pins 49 so as to be vertically rotatable.

As described above, the vehicle seat 1 is held by the two-seat seat cushion frame 28, the outer reclining device 31 and the inner reclining device 37 provided on the seat cushion frame 28 so as to be pivotable back and forth. And 60% seat back frames 39 and 46 of the quadrant. In addition, a tower frame 52 is provided in the left and right partition positions of the seat backs 6 and 9 in the seat back frames 39 and 46, and the lower cross members 41 and 42 bridged to the lower ends of the seat back frames 39 and 46 Supports the lower end.

In the lower lower cross member 41 and the lower inner cross member 42, the inner lower cross member 42 on the center side of the vehicle (vehicle) from the position where the tower frame 52 is disposed has higher rigidity than the outer lower cross member 41 that is not on the center side. ing.

A central side of the seat back 9 of the automobile (vehicle) by rotating the lower LWR as tilted to the front FR, Ru supportable der occupant elbow (not shown). Further, the seat back 9 on the center side of the automobile (vehicle) can be held at a predetermined angle by the reclining device 38.

The third buckle 19 is attached in advance to the base bracket 36 supported by the rear cross member 27 bridged between the reclining devices 31 and 37 before the base bracket 36 is attached to the rear cross member 27.

According to the embodiment of the present invention, there is no tower frame that is a lean reinforcement frame on the seat cushion frame 28 side. For this reason, the vehicle seat 1 is lightweight. Moreover, since the thickness of the cushion part which is not shown in figure can be ensured, the seating comfort of the vehicle seat 1 can be improved.

There is no reclining device on the tower frame 52 side. For this reason, a cover for covering the reclining device is not required, and the manufacturing cost of the vehicle seat 1 can be significantly reduced.

Further, the rigidity of the outer lower member 41 that is not on the center side of the automobile (vehicle) is lower than the rigidity of the inner lower member 42 on the center side of the automobile (vehicle) from the tower frame 52. For this reason, it is possible to absorb an impact caused by sudden acceleration or deceleration.

Further, the reclining devices 31 and 37 can hold the seat back 9 on the center side of the automobile (vehicle) in a standing state. For this reason, even if the vehicle seat 1 is given an impact from the rear RR due to a sudden movement of the luggage arranged on the rear RR of the vehicle seat 1, it can sufficiently withstand. For this reason, a member for protecting the back portion of the vehicle seat 1 becomes unnecessary, and the cost of the vehicle seat 1 can be reduced accordingly.

Further, as shown by a two-dot chain line in FIG. 2, the seat back frame 46 of the seat back 9 of the two-seater seat 4 can be held at an appropriate position by the reclining device 38 . For this reason, it can respond to a passenger | crew's attitude | position suitably.

The third buckle 19 is attached in advance to the base bracket 36 supported by the rear cross member 27 before the base bracket 36 is attached to the rear cross member 27. For this reason, the assembly man-hour of the vehicle seat 1 can be reduced.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various deformation | transformation is possible. Although an example of an automobile is described as a vehicle, the present invention is not limited to this, and a seat such as an aircraft, a ship, or a vehicle may be used.

Claims (3)

A seat cushion frame for two people on the 60% side of a 6: 4 split seat in a vehicle ;
The first and second seat back frames for two persons on the 60% side of the 6: 4 divided sheet;
A first seat back supported by the first seat back frame;
A second seat back supported by the second seat back frame;
A reclining device that is provided on the seat cushion frame and holds the first and second seat back frames in a pivotable manner;
The first and second seat backs are provided between the first seat back frame and the second seat back frame, and are provided at left and right partition positions of the first and second seat backs. Lean reinforcement frame,
A lower cross member that is bridged to the lower end portions of the first and second seat back frames and supports the lower end portion of the lean reinforcement frame;
Equipped with a,
The lower cross member is
An inner lower cross member on the center side of the vehicle from an arrangement position of the lean reinforcement frame;
An out lower cross member that is not on the center side of the vehicle from the arrangement position of the lean reinforcement frame,
The in-lower cross members, said the outro Across stiffer ride Ri products for the seat than the members. Another reclining device capable of holding the seat back on the center side of the vehicle among the first and second seat backs at a predetermined angle;
The center side of the seat back, claim 1 Symbol mounting vehicle seats you characterized in that defeat the front which can support occupant's elbows. The reclining device includes an outer reclining device and an inner reclining device,
The vehicle seat is
A rear cross member bridged between the outer reclining device and the inner reclining device;
A base bracket supported by the rear cross member;
A buckle supported by the base bracket;
Claim 1 or claim 2 vehicle seat, wherein it further comprises a.

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