JP2012201291A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat for absorbing an impact load between an anchor bracket of a seat belt and a seat cushion frame, without increasing manufacturing cost, or increasing weight.SOLUTION: The anchor bracket 26 is formed in a vertical rectangular shape. The substantial center of the anchor bracket 26 is fastened to and supported by the seat cushion frame 21 by a fastener 27. A seat belt anchor 18 is supported in an upper end part of the anchor bracket 26. A lower end part of the anchor bracket 26 includes a first folding-back part 26a inserted into an insertion hole 28 arranged in the seat cushion frame 21, and a second folding-back part 26b folded back in the direction opposite the first folding-back part 26a in a position at a predetermined distance, to a rear surface of the seat cushion frame 21.

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 that is supported by the seat cushion frame and is capable of coupling a seat belt. The anchor bracket is formed in a vertically long rectangular shape, and a substantially central portion of the anchor bracket is fastened and supported to the seat cushion frame by a fastener, and a seat belt anchor is provided at an upper end portion of the anchor bracket. The lower end of the anchor bracket is inserted into an insertion hole provided in the seat cushion frame, and the first folded portion is positioned at a predetermined distance from the back surface of the seat cushion frame. The second folded part that is folded in the opposite direction to the part Characterized in that it made be made by.

  The invention according to claim 2 is the vehicle seat according to claim 1, wherein the second folded portion of the anchor bracket has a substantially horizontal gap formed on the back surface of the seat cushion frame. And

  Invention of Claim 3 is the vehicle seat of Claim 1 or Claim 2, Comprising: The 1st folding | turning part of the said anchor bracket is a 2nd folding | turning part at the time of load input, and the 2nd folding | turning part is the said seat cushion frame. It can be deformed until it comes into contact with the back surface.

  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.

  According to a second aspect of the present invention, the second folded portion of the anchor bracket is formed with a substantially horizontal gap on the back surface of the seat cushion frame. It can be a load anchor bracket.

  According to the invention of claim 3, 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 at the time of load input, the weight of the anchor bracket There is no increase in production costs and no increase in manufacturing costs.

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 a vertically long rectangular shape, and a substantially central portion of the anchor bracket is fastened and supported to the seat cushion frame by a fastener, and a seat belt anchor is supported on an upper end portion of the anchor bracket. And the lower end of the anchor bracket is in a direction opposite to the first folded portion at a position spaced apart from the first folded portion inserted into an insertion hole provided in the seat cushion frame and a back surface of the seat cushion frame by a predetermined dimension. This is realized by forming a second folded portion that is folded back to each other.

  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 denotes a seat back frame of the seat back 6. Reference numeral 20 denotes a reclining device. Reference numeral 9a is a connecting wire, 9b is a return spring, and 9c is a connecting rod.

  Reference numerals 4d and 4d are formed so as to protrude from the rear portion RR of the seat cushion 4 at the end portions of the left side LH and the right side RH with covering skins, 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 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), an anchor plate 24 that supports the buckle 23, and an anchor plate 24. An anchor bracket 26 made of an iron plate having a thickness of 2,6 mm supported by the anchor bolt 25 is provided.

  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 an insertion hole 28 provided in the seat cushion frame 21. The first folded portion 26a and the second folded portion 26b that are folded back in the direction opposite to the first folded portion 26a are formed on the back surface of the seat cushion frame 21 at positions separated by a predetermined dimension D. The predetermined dimension D shown in FIG. 3 is a substantially horizontal gap on the back surface of the seat cushion frame 21, is 32.4 millimeters, and the extension dimension C of the second folded portion 26b is 24.6 millimeters. . 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, and is 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. To do.

  Next, the operation of this embodiment will be described.

  The anchor bracket 26 is formed in a vertically long rectangular shape, and substantially the center of the anchor bracket 26 is fastened and supported to the seat cushion frame 21 by a bolt 27 that is a “fastener”. The seat belt anchor 18 is supported on the upper end of the first seat portion, and the lower end of the anchor bracket 26 is inserted into an insertion hole 28 provided in the seat cushion frame 21 and the seat cushion. Since the second folded portion 26b that is folded back in the direction opposite to the first folded portion 26a is formed on the back surface of the frame 21 at a position separated by a predetermined dimension D, the manufacturing cost does not increase and the weight does not increase. In addition, between the anchor bracket 26 of the seat belt (not shown) and the seat cushion frame 21,撃荷 weight has a practical benefit effects that can be absorbed.

  When a load of a predetermined value or more is applied to the buckle 23 due to sudden braking of the vehicle, the first folding portion 26a of the anchor bracket 26 is deformed, and the second folding is performed while primarily absorbing the impact. Since the portion 26b moves in the direction of the seat cushion frame 21, the distance between the lower end of the anchor bracket 26 and the insertion hole 28 increases, and the anchor bracket 26 is indicated by reference numeral 26 'as shown by a two-dot chain line in FIG. , The bolt 27 is rotated to the front side FR, the buckle 23 is also moved to the front side FR indicated by reference numeral 23 ', and the anchor plate 24 is also moved 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.

  Since the second folded portion 26b of the anchor bracket 26 is formed with a substantially horizontal gap having a predetermined dimension D on the back surface of the seat cushion frame 21, the gap is always constant. The 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 Baltic Anchor 21 Seat Cushion Frame 22 Seat Back Frame 26 Anchor Bracket 27 Bolt (Fastener)
28 Insertion hole

Claims (3)

A vehicle seat comprising at least a seat cushion frame, a seat back frame, and an anchor bracket that is supported by the seat cushion frame and is freely connectable to a seat belt,
The anchor bracket is formed in a vertically long rectangular shape, and the substantially center of the anchor bracket is fastened and supported by the seat cushion frame by a fastener,
A seat belt anchor is supported on the upper end of the anchor bracket,
The lower end portion of the anchor bracket is folded back in a direction opposite to the first folded portion at a position spaced apart from the first folded portion inserted into an insertion hole provided in the seat cushion frame and the back surface of the seat cushion frame. A vehicle seat characterized in that the second folded portion is formed. The vehicle seat according to claim 1,
The vehicle seat according to claim 2, wherein the second folded portion of the anchor bracket has a substantially horizontal gap formed on the back surface of the seat cushion frame. The vehicle seat according to claim 1 or 2, wherein
The vehicle seat according to claim 1, wherein the first folded portion of the anchor bracket is deformable until a second folded portion comes into contact with a back surface of the seat cushion frame when a load is input.

Images