JP5937785B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat such as an automobile.

  As a conventional vehicle seat, in order to improve the occupant restraint performance while reducing the degree of pressure on the occupant, the buckle to which the tongue of the three-point seat belt is engaged is moved in the vehicle front direction of the buckle. It is attached to the seat cushion frame via a guide that allows only the movement of the vehicle, and when the buckle is subjected to an external force exceeding a predetermined amount in the vehicle front direction, the buckle is allowed to move in the forward direction with a resisting force. Some have a mechanism (for example, see Patent Document 1).

JP 2004-161037 A

  However, if the strength of the seat belt anchor bracket and the seat cushion frame is increased in order to ensure the strength with respect to the seat belt, the manufacturing cost increases and the weight increases.

  The present invention has been made by paying attention to such a conventional technique, and the impact load between the anchor bracket of the seat belt and the seat cushion frame without increasing the manufacturing cost and increasing the weight. It is intended to provide a vehicle seat that can absorb water.

The invention according to claim 1 is a vehicle seat comprising at least a seat cushion frame, a seat back frame, and an anchor bracket supported by the seat cushion frame. A seat belt which is formed in a rectangular shape and is substantially supported at the center of the anchor bracket on the surface of the seat cushion frame by a fastener, and a seat belt can be coupled to the upper end of the anchor bracket. An anchor is supported, and a lower end portion of the anchor bracket is bent at a substantially right-angle cross section and can be inserted from the front surface to the back surface through an insertion hole provided in the seat cushion frame, and predetermined dimension apart and prior to said rear surface of said seat cushion frame The second folded portion formed by folding in a direction to protrude from the first bent portion substantially parallel to the first fold-back portion is formed respectively, when the load input by the seat belt anchor, the upper end of the anchor bracket the The first folded portion can be deformed with respect to the seat cushion frame until the second folded portion comes into contact with the back surface of the seat cushion frame by rotating forward about the fastener .

  According to the first aspect of the present invention, the anchor bracket is formed in a vertically long rectangular shape, and a substantially center of the anchor bracket is fastened and supported on the seat cushion frame by a fastener, and the anchor bracket A seat belt anchor is supported on the upper end of the seat bracket, and the lower end of the anchor bracket has a first folding portion inserted into an insertion hole provided in the seat cushion frame and a back surface of the seat cushion frame. Since the second folded portion formed by folding back in the opposite direction to the first folded portion is formed at a position spaced apart from each other, the manufacturing cost does not increase and the weight is not increased, and the seat bracket anchor bracket and seat There is a practical effect that an impact load can be absorbed between the cushion frame and the cushion frame.

In addition, since the second folded portion of the anchor bracket is formed with a gap substantially parallel to the back surface of the seat cushion frame, the gap is always constant , and the anchor bracket having a stable shock-resistant load can be obtained. it can.

Furthermore, since the first folded portion of the anchor bracket can be deformed until the second folded portion comes into contact with the back surface of the seat cushion frame when a load is input, the weight of the anchor bracket is not increased and the manufacturing cost is reduced. There is no soaring.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory perspective view showing a vehicle seat according to an embodiment of the present invention. Side surface explanatory drawing which concerns on the arrow A of FIG. Sectional drawing along the SB-SB line | wire of FIG. Sectional drawing which shows the state in which the impact load was added to the anchor bracket of FIG.

The purpose of the anchor bracket is to provide a vehicle seat that can absorb impact load between the anchor bracket of the seat belt and the seat cushion frame without increasing the manufacturing cost and increasing the weight. Is formed in the shape of a vertically long rectangle, and the center of the anchor bracket is fastened and supported on the surface of the seat cushion frame by a fastener, and a seat belt can be coupled to the upper end of the anchor bracket. comprising the seat belt anchor is supported, the lower end of the anchor bracket, first Naru insertable toward the back side from the surface through the insertion hole provided in the seat cushion frame are bent formed into a substantially right-angled a predetermined dimension apart and the first fold-back portion to the rear surface of the folded portion and the seat cushion frame The second folded portion formed by folding in a direction protruding from the parallel first fold portion are respectively formed, at the time of load input by said seat belt anchor, the upper end of the anchor bracket front about said fastener by rotating, the first turning portion than that deformable relative to the seat cushion frame to the second folded portion comes into contact with the rear surface of the seat cushion frame, was realized.

  The best embodiment of the present invention will be described below with reference to FIGS. A reference numeral 1 shown in FIG. 1 is a seat mounted on a one-box type automobile as a “vehicle”, and the seat 1 is a so-called second seat (2 from the front) arranged on the rear side of a driver seat (not shown). The second seat).

As shown in FIG. 1, the seat 1 is slidable back and forth on a floor (not shown) and can be stopped at an appropriate position, and the seat 1 is bridged between the slide devices 2 and 2. A seat cushion 4 supported by the legs 5, 5; a seat back 6 pivotally supported by the arms 4C, 4C of the seat cushion 4 so as to be rotatable forward and backward; and a headrest supported by the seat back 6 7 and so on. Reference numerals 3 and 3a in FIG. 1 denote a slide operation lever and an engaging portion for releasing or locking the lock (not shown) of the slide devices 2 and 2. Reference numerals 16 and 17 in FIG. 1 are armrests supported by the seat back 6. Reference numeral 22 shown in FIG. 2 is a seat back frame of the seat back 6. Reference numeral 20 shown in FIG. 2 is a reclining device. 2 is a connecting wire, 9b is a return spring, and 9c is a connecting rod.

Reference numerals 4d and 4d shown in FIG. 1 are formed by protruding cover skins disposed at the rear portions RR of the seat cushion 4 at the ends of the left side LH and the right side RH, respectively. The covering skins 4d and 4d are made of the same material as the skin of the seat cushion 4 (for example, cloth, a resin film lined with cloth, natural leather, synthetic leather), and formed on the lower end of the seat back 6. It is formed in the width dimension which can be inserted in the recessed parts 6d and 6d.

Reference numeral 18 shown in FIGS. 1 and 2 denotes a seat belt anchor. The seat belt anchor 18 includes a buckle 23 that can engage a tongue of a three-point seat belt (not shown), and an anchor plate 24 that supports the buckle 23. And an anchor bracket 26 made of an iron plate having a thickness of 2,6 millimeters, in which the anchor plate 24 is supported by anchor bolts 25.

As shown in FIG. 2, the anchor bracket 26 is formed in a vertically long rectangular shape, and the substantially center of the anchor bracket 26 is fastened and supported on the seat cushion frame 21 by a bolt 27 of a “fastener”. The seat bracket anchor 18 is supported by an anchor bolt 25 at the upper end of the anchor bracket 26, and the lower end of the anchor bracket 26 is inserted into the insertion hole 28 provided in the seat cushion frame 21 as shown in FIG. As shown in FIG. 3, the first folded portion 26 a formed with a substantially right-angle cross section is inserted and spaced apart from the back surface of the seat cushion frame 21 by a predetermined dimension D, and the cross section is separated from the lower end portion as shown in FIG. 3. A second folded portion 26b that is substantially parallel and folded in a direction protruding from the lower end portion is formed. The predetermined dimension D shown in FIG. 3 is a gap substantially parallel to the back surface of the seat cushion frame 21, is 32.4 millimeters, and the projecting dimension C of the second folded portion 26b is 24.6 millimeters. . The longitudinal dimension E of the insertion hole 28 is 8 millimeters.

The first folded portion 26a of the anchor bracket 26 is deformed from the state of FIG. 3 to the state of FIG. 4 when a load is input by the seat belt anchor 18 , and the second folded portion 26b is replaced with the seat cushion frame 21. Deforms until it comes into contact with the back surface.

  Next, the operation of this embodiment will be described.

The anchor bracket 26, and substantially the center of the anchor bracket 26 will be formed in a vertical rectangular shape, by a bolt 27 which is a "fastener" the fastened support on the surface of the seat cushion frame 21 ing. The the upper end of the anchor bracket 26, ing seat belt anchor 18 is supported. The lower end portion of the anchor bracket 26 includes a first folded portion 26a formed by inserting the insertion hole 28 provided in the seat cushion frame 21 into a substantially right-angled section as shown in FIG. 3 and the seat cushion frame. since the second folded portion 26b on the back surface of the 21 cross-section as shown in only spaced and Fig predetermined dimension D formed by folding in a direction to protrude from the lower end portion substantially parallel to said lower portion, which are formed respectively, There is a practical effect that the impact load can be absorbed between the anchor bracket 26 of the seat belt (not shown) and the seat cushion frame 21 without increasing the manufacturing cost and without increasing the weight.

When the vehicle is suddenly braked and a load of a predetermined value or more is applied to the buckle 23, the upper end of the anchor bracket 26 by the seat belt anchor 18 has a front FR as shown by a two-dot chain line in FIG. deform. Along with the deformation, the first folded portion 26 a is pulled out from the insertion hole 28 while primarily absorbing the impact from the seat belt anchor 18 , and is deformed to the rear side RR around the bolt 27. As shown in FIG. 4, the second folded portion 26 b comes into contact with the back surface of the seat cushion frame 21 and stops rotating. Thus, the buckle 23 also moves to the front side FR indicated by reference numeral 23 ', and the anchor plate 24 also moves to the front side FR indicated by reference numeral 24'. As a result, since the moment is reduced, the input load to the slide device 2 and the means for fixing the slide device 2 to the floor (not shown) is reduced.

The second folded portion 26b of the anchor bracket 26, the order substantially parallel a predetermined gap D from the back surface of the seat cushion frame 21 is formed in advance, since the gap is always constant, stable impact load The anchor bracket 26 can be used.

  The first folded portion 26a of the anchor bracket 26 can be deformed until the second folded portion 26b comes into contact with the back surface of the seat cushion frame 21 when a load is input by a seat belt (not shown). There is no increase in weight and no increase in manufacturing costs.

  In the above embodiment, the vehicle seat 1 has been described as an example of the vehicle seat, but the seat is not limited to this and may be a seat mounted on an aircraft, a rail vehicle, a ship, or the like. The seat 1 has been described by taking the second seat arranged behind the driver seat as an example. However, the seat 1 is not limited to this and may be a rear seat.

1 Vehicle Seat as “Vehicle” 4 Seat Cushion 6 Seat Back 18 Seat Belt Anchor 21 Seat Cushion Frame 22 Seat Back Frame 26 Anchor Bracket
26a 1st turning part
26b Second folding part 27 Bolt (fastener)
28 Insertion hole

Claims (1)

A vehicle seat comprising at least a seat cushion frame, a seat back frame, and an anchor bracket supported by the seat cushion frame,
The anchor bracket is formed in a vertically long rectangular shape, and the substantially center of the anchor bracket is fastened and supported on the surface of the seat cushion frame by a fastener,
At the upper end of the anchor bracket, a seat belt anchor that can freely couple the seat belt is supported,
The lower end of the anchor bracket, the rear surface of the first fold-back portion and the seat cushion frame Naru insertable toward the back side from the surface through the insertion hole provided in the seat cushion frame are bent formed into a substantially right-angled the second folded portion formed by folding in a direction to protrude from the first bent portion substantially parallel to the predetermined dimension apart and the first folded portion is formed respectively,
When a load is input by the seat belt anchor, the upper end portion of the anchor bracket rotates forward with the fastener as a center, and the first folded portion is placed on the back surface of the seat cushion frame. A vehicle seat that is deformable with respect to the seat cushion frame until it abuts.

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