JP2016097702A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which can suppress the oscillation of a seated occupant in a vehicle fore-and-aft direction.SOLUTION: A vehicle seat 10 has: a soft planar cloth spring 36 which is arranged at a lower side of a seat cushion pad 28 in a vehicle vertical direction, has a prescribed width in a vehicle width direction, and is extended along a vehicle fore-and-aft direction; a stabilizer bar 48 which is attached to the cloth spring 36, formed into a long-length shape, whose longitudinal direction is made to be the vehicle width direction, and in which longitudinal both ends 50 are protruded from an end 49 of the cloth spring 36 in the vehicle width direction; and a fore-and-aft oscillation regulation bracket 52 which is attached to seat slide rails 22, into which both the ends 50 of the stabilizer bar 48 are inserted, and in which a slit 62 for regulating the displacement of the stabilizer bar 48 to the vehicle fore-and-aft direction is formed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle seat.

  Patent Document 1 below discloses a vehicle seat structure. Specifically, a seat cushion on which an occupant is seated includes a pair of side frames disposed at a predetermined interval in the vehicle width direction, a support frame disposed rearward, and a front frame disposed forward. And a cushion member spanned between the support frame and the front cushion. The cushion member is composed of a planar spring member made of a two-dimensional net material (cloth member), and a long wire is attached to the back surface of the cushion member with the longitudinal direction being the vehicle width direction. Yes. Therefore, the weight of the cushion member can be reduced as compared with the case where it is constituted by a metal spring or the like, and the wobbling in the vehicle width direction when an inertial force acts on the occupant seated by the wire in the vehicle width direction. The feeling is suppressed.

JP 2004-141545 A

  However, according to the configuration disclosed in Patent Document 1, for example, when an inertial force acts on the seated occupant in the vehicle front direction due to sudden braking, the cushion member is configured by the cloth member, and thus swings in the vehicle front direction. To do. Therefore, since the swing of the seated occupant in the forward direction of the vehicle cannot be suppressed, the above prior art has room for improvement in this respect.

  In view of the above problems, an object of the present invention is to provide a vehicle seat that can suppress a seat occupant from swinging in the vehicle longitudinal direction when a flexible face material is used instead of a seat cushion spring. .

  A vehicle seat according to a first aspect of the present invention is a flexible planar shape that is provided below the seat cushion pad in the vehicle vertical direction and has a predetermined width in the vehicle width direction and extends along the vehicle longitudinal direction. A cushion member attached to the cushion member, a stabilizer bar having a long shape and a longitudinal direction that is the vehicle width direction, and both longitudinal ends projecting from ends of the cushion member in the vehicle width direction, and a seat And a front and rear swing restriction bracket that is attached to the slide rail, and that is formed with a restriction portion that is inserted through the both ends of the stabilizer bar and restricts the displacement of the stabilizer bar in the vehicle front-rear direction.

  According to the first aspect of the present invention, the stabilizer bar is held by the front-rear displacement swing bracket by inserting both ends of the stabilizer bar into the restricting portion of the front-rear swing restricting bracket. That is, the cushion member to which the stabilizer bar is attached is held by the forward / backward swing restriction bracket via the stabilizer bar. The front / rear swing restriction bracket restricts the displacement of the stabilizer bar in the vehicle front-rear direction, so that the displacement of the cushion member in the vehicle front-rear direction is restricted. Therefore, when an inertial force acts on the seated occupant in the vehicle longitudinal direction due to a sudden brake or the like, the cushion member swings in the vehicle longitudinal direction under the influence of the occupant trying to move in the vehicle longitudinal direction under the inertial force. However, the back and forth swing restriction bracket suppresses the back and forth swing of the cushion member.

  The vehicle seat according to the first aspect of the present invention has an excellent effect that the swing of the seated occupant in the vehicle front-rear direction can be suppressed when a flexible face material is used instead of the seat cushion spring. Have.

It is a perspective view showing the state which looked at the vehicular seat concerning one embodiment toward the back from the vehicles front and rear direction. It is a disassembled perspective view which shows the principal part of the vehicle seat which concerns on one Embodiment. It is an expanded sectional view which shows the state cut | disconnected along the AA line of FIG. It is an expanded sectional view which shows the state cut | disconnected along the BB line of FIG. It is an expanded sectional view showing the state where the vehicle seat concerning the proportionality was cut along the vehicle front-rear direction.

  Hereinafter, an embodiment of a vehicle seat according to the present invention will be described with reference to FIGS. In these drawings, the arrow UP indicates the vehicle vertical direction upper side, the arrow FR indicates the vehicle front-rear direction front side, and the arrow OUT indicates the vehicle width direction outer side.

  As shown in FIG. 1, the vehicle seat 10 is arranged on the upper side in the vehicle vertical direction of two seat frames 12 (see FIG. 3) that extend in the vehicle width direction and are spaced apart in the vehicle front-rear direction. In addition, a seat cushion 16 on which the occupant sits, a seat back 18 that stands upright at the rear end of the seat cushion 16 to support the upper body of the occupant, and an upper end of the seat back 18 are provided on the upper end of the occupant. And a headrest 20 that supports the head.

  A seat slide rail 22 is provided below the seat cushion 16 in the vehicle vertical direction. The seat slide rail 22 is provided on the lower side of the seat cushion 16 in the vehicle vertical direction by fastening means (not shown), and is provided on the vehicle rail in the vertical direction of the upper rail 24 and fixed to a floor panel (not shown). The lower rail 26 is configured. And the upper rail 24 is fitted with respect to the lower rail 26 so that a movement along the vehicle front-back direction is possible. Thus, the seat cushion 16 and thus the vehicle seat 10 can be moved in the vehicle front-rear direction by the seat slide rail 22.

  As shown in FIG. 3, the seat cushion 16 has a seat cushion pad 28 formed of urethane foam or the like disposed on the upper side of the seat frame 12 in the vehicle vertical direction. The seat cushion pad 28 is covered with a seat skin 30. Further, a projecting portion 32 that projects downward in the vehicle vertical direction is formed between the seat frame 12F on the front side in the vehicle longitudinal direction and the seat frame 12R on the rear side on the back side of the seat cushion pad 28. .

  A cloth spring 36 as a cushion member is provided below the protrusion 32 of the seat cushion pad 28 in the vehicle vertical direction. The cloth spring 36 is formed in a substantially rectangular shape whose longitudinal direction is the vehicle front-rear direction in plan view (see FIG. 2), and is made of an elastic fiber. Therefore, the cloth spring 36 can be greatly expanded and contracted along the vehicle longitudinal direction, and can thereby be displaced in the vehicle vertical direction. For this reason, the substantially central portion of the cloth spring 36 in the vehicle front-rear direction is in a state of protruding downward in the vehicle vertical direction along the protruding portion 32 of the seat cushion pad 28.

  A spring mounting bracket 44 composed of a first metal fitting 40 and a second metal fitting 42 each having a substantially U-shaped cross section perpendicular to the vehicle width direction is attached to the front end portion 38 of the cloth spring 36 in the vehicle longitudinal direction. It has been. The spring mounting bracket 44 is mounted such that the cross-sectional opening of the first bracket 40 is positioned below the cloth spring 36 in the vehicle vertical direction. A seat frame 12 </ b> F is housed inside the cross section of the first metal fitting 40. The second metal fitting 42 is attached to the inside of the cross section of the first metal fitting 40 so that the seat frame 12F is sandwiched between the first metal fitting 40. Thus, the spring mounting bracket 44 of the cloth spring 36 is locked to the seat frame 12F extending in the vehicle width direction. A spring mounting bracket 44 having the same configuration as that of the front end portion 38 is also attached to the rear end portion 46 of the cloth spring 36 in the vehicle front-rear direction, and is locked to the seat frame 12R on the rear side in the vehicle front-rear direction. Yes.

  As shown in FIG. 2, a long stabilizer bar 48 is attached to the cloth spring 36. Specifically, the stabilizer bar 48 is formed in a substantially cylindrical shape whose longitudinal direction is the vehicle width direction, and is a vehicle that is orthogonal to the longitudinal direction of the cloth spring 36, that is, the expansion / contraction direction of the cloth spring 36. It extends in the front-rear direction and the vertical direction. Two stabilizer bars 48 are attached to the cloth spring 36 at a substantially central portion in the vehicle front-rear direction. The two stabilizer bars 48 are attached to the cloth spring 36 so as to be separated from each other in the vehicle front-rear direction, and are arranged in the longitudinal direction of the stabilizer bar 48F on the front side in the vehicle front-rear direction and the stabilizer bar 48R on the rear side in the vehicle front-rear direction. Both end portions 50 protrude outward in the vehicle width direction from end portions 49 of the cloth spring 36 in the vehicle width direction. Furthermore, both end portions 50 of the stabilizer bar 48F protrude outward in the vehicle width direction from side walls 54 of a back-and-forth swing restriction bracket 52 described later. The method of attaching the stabilizer bar 48 to the cloth spring 36 is as follows. That is, a rectangular holding cloth 56 is arranged on the lower side of the cloth spring 36 in the vehicle vertical direction with the longitudinal direction being the vehicle width direction in plan view. The holding cloth 56 is attached to the cloth spring 36 by sewing both ends of the holding cloth 56 in the short direction to the cloth spring 36. The stabilizer bar 48 is attached to the cloth spring 36 by inserting the stabilizer bar 48 into a holding space formed between the cloth spring 36 and the holding cloth 56.

  A front / rear swing regulation bracket 52 is attached to the upper rail 24 of the seat slide rail 22. The front-rear swing restriction bracket 52 includes a side wall portion 54 erected along the vehicle vertical direction, and a bottom wall portion 58 that extends along the vehicle width direction from the vehicle vertical direction lower end of the side wall portion 54. And the cross section is made of metal having an L shape.

  The bottom wall portion 58 is formed in a rectangular shape in plan view, and the longitudinal direction is located in the same direction as the longitudinal direction of the upper rail 24. The bottom wall portion 58 is coupled to an upper surface 60 of the upper rail 24 on the upper side in the vehicle vertical direction by a coupling means (not shown).

  The side wall portion 54 is formed in a substantially rectangular shape in a side view, and is arranged in a direction in which the plate thickness direction is the vehicle width direction. Further, the side wall portion 54 is disposed on the inner side in the vehicle width direction with respect to the upper rail 24. A slit 62 is formed at a substantially central portion of the side wall portion 54 in the vehicle front-rear direction. The slit 62 penetrates in the thickness direction of the side wall portion 54 and is formed downward from the upper end portion 64 of the side wall portion 54 along the vehicle vertical direction. The width dimension of the slit 62 is set substantially the same as the diameter dimension of the stabilizer bar 48F.

  Of the stabilizer bar 48 attached to the cloth spring 36, the stabilizer bar 48F on the front side in the vehicle front-rear direction has both end portions 50 inserted through the slits 62 in the side wall portion 54 of the front-rear swing regulation bracket 52 (see FIG. 4). ). Therefore, the stabilizer bar 48F can be displaced in the vehicle vertical direction, and the displacement in the vehicle longitudinal direction is restricted.

  Next, the operation and effect of this embodiment will be described.

  Here, the operation and effect of the present embodiment will be described using the proportionality shown in FIG. In addition, about the same component as this embodiment, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, a protruding portion 103 that protrudes downward in the vehicle vertical direction is formed between the seat frame 12F and the seat frame 12R on the back surface side of the seat cushion pad 101 of the seat cushion 110. ing. A cloth spring 100 is provided below the protruding portion 103 in the vehicle vertical direction. The cloth spring 100 is formed in a substantially rectangular shape whose longitudinal direction is the vehicle front-rear direction in plan view, and is made of an elastic fiber. Therefore, the cloth spring 100 can be greatly expanded and contracted along the front and rear of the vehicle, and can thereby be displaced in the vertical direction of the vehicle. For this reason, the substantially central portion of the cloth spring 100 in the vehicle front-rear direction is in a state of protruding downward in the vehicle vertical direction along the protruding portion 103 of the seat cushion pad 101.

  A spring mounting bracket 104 having a substantially U-shaped cross section perpendicular to the vehicle width direction is attached to the front end portion 102 of the cloth spring 100 in the vehicle front-rear direction. The spring mounting bracket 104 is mounted such that the cross-sectional opening is located below the cloth spring 100 in the vehicle vertical direction. A spring mounting bracket 104 is coupled to the upper surface of the seat frame 12F. A spring mounting bracket 104 having the same configuration as that of the front end portion 102 is also attached to the rear end portion 106 of the cloth spring 100 in the vehicle front-rear direction, and is coupled to the seat frame 12R on the rear side in the vehicle front-rear direction. .

  A long stabilizer bar 108 is attached to the cloth spring 100. Specifically, the stabilizer bar 108 is formed in a substantially cylindrical shape whose longitudinal direction is the vehicle width direction, and is a vehicle that is orthogonal to the longitudinal direction of the cloth spring 100, that is, the expansion / contraction direction of the cloth spring 100. It extends in the front-rear direction and the vertical direction. Further, two stabilizer bars 108 are attached to the cloth spring 100 at a substantially central portion in the vehicle front-rear direction. The two stabilizer bars 108 are attached to the cloth spring 100 so as to be separated from each other in the vehicle front-rear direction.

  According to the above-described comparative configuration, the seat cushion pad 101 that is displaced in the vehicle vertical direction when the occupant P is seated on the seat cushion 110 is supported by the cloth spring 100 that is displaced in the vehicle vertical direction. For this reason, the cushion feeling of the seat cushion 110 is improved by the reaction force of the cloth spring 100. At the same time, the stabilizer bar 108 extending in the direction perpendicular to the expansion / contraction direction of the cloth spring 100, that is, in the vehicle width direction is attached to the cloth spring 100, thereby suppressing expansion / contraction of the cloth spring 100 in the vehicle width direction. Is done. That is, the feeling of wobbling in the vehicle width direction when an inertial force is applied to the seated occupant P in the vehicle width direction is suppressed. However, when an inertial force acts on the occupant P in the vehicle front-rear direction due to a sudden brake or the like, the cloth spring 100 is not restricted with respect to displacement in the vehicle front-rear direction, and therefore tends to move in the vehicle front-rear direction under the inertial force. The vehicle swings in the vehicle longitudinal direction under the influence of the passenger P. Therefore, the occupant P seated on the seat cushion 110 cannot be restrained from swinging in the vehicle longitudinal direction, and there is room for improvement in this respect.

  On the other hand, in the present embodiment shown in FIG. 1, the stabilizer bar 48 is inserted into the slit 62 of the forward / backward swing restriction bracket 52 by inserting both end portions 50 of the stabilizer bar 48 into the forward / backward swing restriction bracket 52. Is retained. That is, the cloth spring 36 to which the stabilizer bar 48 is attached is held by the forward / backward swing restriction bracket 52 via the stabilizer bar 48. The front / rear swing restriction bracket 52 restricts the displacement of the stabilizer bar 48 in the vehicle front-rear direction, so that the displacement of the cloth spring 36 in the vehicle front-rear direction is restricted. Therefore, when an inertial force acts on the occupant P seated by a sudden brake or the like in the vehicle front-rear direction, the cloth spring 36 is moved by the influence of the occupant P who tries to move in the vehicle front-rear direction under the inertial force. However, the cloth spring 36 is restrained from swinging in the longitudinal direction of the vehicle. Thereby, when the cloth spring 36 is used for the vehicle seat 10 instead of the seat cushion spring, the occupant P can be prevented from swinging in the vehicle front-rear direction.

  Further, since the slit 62 of the forward / backward swing restricting bracket 52 is formed along the vertical direction of the vehicle, the stabilizer bar 48F inserted through the slit 62 can be displaced along the vertical direction of the vehicle. That is, since the displacement of the cloth spring 36 in the vehicle vertical direction is not restricted, the seat cushion pad 28 that is displaced in the vehicle vertical direction when the occupant P is seated on the seat cushion 16 is moved by the cloth spring 36 that is displaced in the vehicle vertical direction. Can be supported. Thus, the cushion feeling of the seat cushion 16 can be improved by the reaction force of the cloth spring 36 while suppressing the seated occupant P from swinging in the vehicle longitudinal direction.

  In the present embodiment, among the stabilizer bars 48 attached to the cloth spring 36, the front / rear direction front stabilizer bar 48F is held by the front / rear swing regulation bracket 52. However, the present invention is not limited thereto. The front / rear swing regulation bracket 52 may be provided at a position corresponding to the front / rear direction stabilizer bar 48R and the stabilizer bar 48R may be held by the front / rear swing restriction bracket 52. Further, the forward / backward swing restriction bracket 52 may be provided at a position corresponding to the stabilizer bar 48F and the stabilizer bar 48R, and the stabilizer bar 48F and the stabilizer bar 48R may be held by the forward / backward swing restriction bracket 52, respectively. .

  The embodiment of the present invention has been described above, but the present invention is not limited to the above, and various modifications other than those described above can be implemented without departing from the spirit of the present invention. Of course.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 22 Seat slide rail 28 Seat cushion pad 36 Cloth spring (cushion member)
48 Stabilizer bar 49 End 50 Both ends 52 Front / rear swing regulation bracket 62 Slit

Claims (1)

A flexible planar cushion member provided on the lower side of the seat cushion pad in the vehicle vertical direction and having a predetermined width in the vehicle width direction and extending along the vehicle longitudinal direction;
A stabilizer bar that is attached to the cushion member, has a long shape and a longitudinal direction that is the vehicle width direction, and both longitudinal ends protrude from the vehicle width direction ends of the cushion member;
A front / rear swing restriction bracket that is attached to a seat slide rail and that is formed with a restriction portion that is inserted through the both ends of the stabilizer bar and restricts displacement of the stabilizer bar in the vehicle front-rear direction;
A vehicle seat having:

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