JP2016101899A - Suspension seat of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle suspension seat by which an article intruding into a rear side from a clearance between an upper end of a seatback inner and a seatback outer can be easily taken out by a simple structure.SOLUTION: A seatback 3 is divided into a seatback outer 20 and a seatback inner 30, and the seatback inner 30 vertically oscillates with respect to the seatback outer 20 following the vertical movement of a cushion frame. A fall prevention sheet 16 is a flexible sheet material, its upper edge 16a is made to firmly adhere to an outer upper part 21 of the seatback outer 20, a lower edge 16b is made to firmly adhere to an upper part of the seatback inner 30, and an intermediate part 16c is folded in a U-shape between the seatback inner 30 and a seatback rear face 24 in an initial state that the seatback inner 30 is most ascended with respect to the seatback outer 20.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle suspension seat.

  Patent Document 1 describes a vehicle seat in which a shielding member made of a carpet material having rigidity protruding upward is sewn at the rear end of a skin material of a seat cushion.

Japanese Patent Laid-Open No. 10-85470

  A so-called two-split type suspension seat has been developed in which a seat back is divided into a seat back outer and a seat back inner, and the seat back inner is supported by a cushion frame. In this two-split type suspension seat, the seat back inner follows the vertical movement of the cushion frame and moves up and down with respect to the seat back outer. For this reason, when the seat back inner is lowered, a gap is generated between the upper end portion of the seat back inner and the seat back outer, and there is a possibility that an object is dropped backward from the generated gap. The rear surface of the seat back inner is covered from the rear by the seat back rear surface portion, and the object dropped from the gap cannot be easily taken out.

  Further, in order to eliminate the above inconvenience, when the gap between the upper end portion of the seat back inner and the seat back outer is shielded using a rigid shielding member as in Patent Document 1, the vertical movement of the seat back inner is caused by the shielding member. It will be disturbed.

  In view of the above, an object of the present invention is to provide a suspension seat that can easily take out an object that has entered rearward from between the upper end portion of the seatback inner and the seatback outer with a simple structure.

  In order to achieve the above object, the present invention is a state in which the seat back is divided into a seat back outer and a seat back inner, and the suspension device allows a relative vertical movement between the cushion frame and the floor surface. The suspension seat for supporting the cushion frame from below is provided with a fall prevention sheet.

  The seat back outer includes an outer upper portion, a pair of outer side portions, an inner accommodating space, and a seat back rear surface portion. The outer upper part extends in the seat width direction at the upper part of the seat back. The pair of outer side portions extends downward from both end portions of the outer upper portion in the seat width direction. The inner accommodating space is partitioned by the outer upper portion and a pair of outer side portions. The seat back rear surface portion covers the inner housing space from the rear. The seat back inner is supported by the cushion frame, is accommodated in the inner accommodating space, and moves up and down with respect to the seat back outer following the vertical movement of the cushion frame.

  The fall prevention sheet is a flexible sheet material having an upper edge portion, a lower edge portion, and an intermediate portion. The upper edge portion is fixed to the outer upper portion of the seat back outer. The lower edge portion is fixed to the upper portion of the seat back inner. The intermediate portion is an initial state in which the seat back inner is raised most with respect to the seat back outer, and is folded back in a U shape between the seat back inner and the seat back rear surface portion.

  In the above configuration, even when the seatback inner descends from the initial state and a gap is generated between the upper end of the seatback inner and the seatback outer, and an object accidentally enters backward from this gap, The fall prevention sheet prevents the entry object from falling. Accordingly, the occupant can easily take out an object that has accidentally entered backward from the gap.

  Moreover, since the fall prevention sheet has flexibility, the fall prevention sheet does not hinder the vertical movement of the seat back inner.

  According to the present invention, it is possible to easily take out an object that has entered the rear from between the upper end portion of the seat back inner and the seat back outer by a simple structure in which the fall prevention sheet is provided.

It is a perspective view showing the outline of the internal structure of the suspension seat concerning one embodiment of the present invention. It is a perspective view which shows the external appearance of a suspension sheet. FIG. 4 is a side sectional view of the upper part of the suspension seat, where (a) shows the seat back inner in the initial state, and (b) shows the seat back inner lowered from the initial state. It is the perspective view which looked at the internal structure of the upper part of a suspension seat from back.

  Hereinafter, a vehicle suspension seat (hereinafter abbreviated as a seat) 1 according to an embodiment of the present invention will be described with reference to the drawings. In the following description, front, rear, left and right mean front, rear, left and right when the direction in which the seated person of seat 1 faces is the front.

  As shown in FIG. 1, the seat 1 includes a seat cushion 2 that supports a seated person's buttocks and a seat back 3 that supports the back of the seated person. The seat back 3 is configured by being divided into a seat back outer 20 and a seat back inner 30. A pair of left and right lower rails 7 extending in the front-rear direction are fixed to the floor surface 6 in the passenger compartment, and the left and right lower rails 7 respectively support the left and right upper rails 8 so as to be slidable in the front-rear direction.

  A pad material (not shown) of the seat cushion 2 is supported by a cushion frame 4 that is a skeleton member. The cushion frame 4 has a front frame 10 and left and right horizontal frames 11 and is disposed above the upper rail 8. The front frame 10 extends in the seat width direction (left-right direction), and the horizontal frame 11 extends in the front-rear direction. The horizontal frame 11 and the upper rail 8 are connected by two parallel links 13 in the front and rear (four in the left and right front and rear), and the parallel link 13 constitutes a suspension device 15 together with the suspension mechanism 14. The upper and lower ends of each parallel link 13 are rotatably supported with respect to the horizontal frame 11 and the upper rail 8, and the vertical movement of the cushion frame 4 (seat cushion 2) with respect to the upper rail 8 is allowed by the parallel link 13. The The suspension mechanism 14 is interposed between the upper rail 8 and the cushion frame 4 and isolates a seated person from shocks and vibrations transmitted to the floor surface 6 using a coil spring, an air suspension, a magnetic suspension, etc. The suspension device 15 supports the cushion frame 4 from below while permitting relative vertical movement between the cushion frame 4 and the floor surface 6.

  The seat back outer 20 includes an outer upper portion 21, a pair of left and right outer side portions 22, an inner accommodating space 23, and a seat back rear surface portion 24. The outer upper portion 21 extends in the seat width direction at the upper portion of the seat back 3 and includes a headrest 25 at the center thereof. The left and right outer side portions 22 extend downward from the left and right end portions of the outer upper portion 21. The inner housing space 23 is partitioned into an intermediate portion of the seat back 3 in the seat width direction by the outer upper portion 21 and the left and right outer side portions 22. The seat back rear surface portion 24 is a plate-like or sheet-like member, and covers the inner housing space 23 from the rear.

  The pad material 20a (see FIG. 3) of the seat back outer 20 is supported by a back outer frame 26 that is a skeleton member. The back outer frame 26 includes an outer frame upper portion 26a, a pair of left and right outer frame side portions 26b, and a headrest frame portion 26c. The outer frame upper portion 26 a extends in the seat width direction inside the outer upper portion 21. The left and right outer frame side portions 26b bend downward from both ends of the outer frame upper portion 26a in the seat width direction and extend in the vertical direction inside the left and right outer side portions 22. The lower end portions of the left and right outer frame side portions 26b are supported by the rear end portions of the left and right lower rails 7. The headrest frame portion 26c is bent in an inverted U shape inside the headrest 25, and both end portions (lower end portions) thereof are fixed to the outer frame upper portion 26a.

  The seat back inner 30 is accommodated in the inner accommodating space 23 of the seat back outer 20. The pad material 30a (see FIG. 3) of the seat back inner 30 is supported by a back inner frame 31 that is a skeleton member and a back inner plate 32 that is a plate-like member. The back inner frame 31 has an inner frame upper part 31a and a pair of left and right inner frame side parts 31b. The inner frame upper portion 31 a extends in the seat width direction at the upper portion of the seat back inner 30. The left and right inner frame side portions 31b are bent from both ends of the inner frame upper portion 31a in the seat width direction and extend downward. The back inner plate 32 is fixed to the front portion of the back inner frame 31 so as to block the space defined by the back inner frame 31 on the inside. The lower end portions of the left and right inner frame side portions 31b are rotatably supported by the rear end portions of the left and right horizontal frames 11 of the cushion frame 4, and the back inner frame 31 moves up and down following the vertical movement of the cushion frame 4. . That is, the seat back inner 30 is supported by the cushion frame 4 and moves up and down with respect to the seat back outer 20 following the vertical movement of the cushion frame 4.

  As shown in FIGS. 3 and 4, a fall prevention sheet 16 is provided between the outer upper portion 21 of the seat back outer 20 and the upper portion of the seat back inner 30. The fall prevention sheet 16 is a flexible sheet material having a substantially rectangular shape in plan view. The material of the fall prevention sheet 16 can be arbitrarily selected, for example, cloth or resin. The upper edge portion 16a of the fall prevention sheet 16 is fixed to the outer upper portion 21 (in this embodiment, the outer frame upper portion 26a). The lower edge portion 16b of the fall prevention sheet 16 is fixed to the upper portion of the seat back inner 30 (in this embodiment, the inner frame upper portion 31a). In an initial state in which the seat back inner 30 rises most with respect to the seat back outer 20 (see FIG. 3A), the intermediate portion 16c of the fall prevention sheet 16 is between the seat back inner 30 and the seat back rear surface portion 24. Is folded into a U shape to form a bag.

  When the occupant sits on the seat cushion 2 and the suspension device 15 functions and the cushion frame 4 is lowered, the seat back inner 30 is also lowered from the initial state (see FIG. 3A), and the seat back inner is lowered. A gap 17 is generated between the upper end of the seat 30 and the seat back outer 20 (see FIGS. 2 and 3B). At this time, the lower edge portion 16 b of the fall prevention sheet 16 is also lowered, and the fall prevention sheet 16 covers the back of the gap 17. The lateral width (length in the left-right direction) of the fall prevention sheet 16 is set to a length that covers substantially the entire width direction of the gap 17. Further, the vertical width (length in the vertical direction) of the fall prevention sheet 16 is set to such a length that the vertical tension does not act even when the seat back inner 30 is lowered most.

  Since such a fall prevention sheet 16 is provided, the seat back inner 30 is lowered from the initial state, and a gap 17 is generated between the upper end portion of the seat back inner 30 and the seat back outer 20. Even if an object accidentally enters backward, the fall prevention sheet 16 prevents the entry object from falling. Therefore, the occupant can easily take out an object that has accidentally entered backward from the gap 17.

  Moreover, since the fall prevention sheet 16 has flexibility, the fall prevention sheet 16 does not hinder the vertical movement of the seat back inner 30.

  As mentioned above, although the embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  The display device of the present invention can be used for various suspension seats.

1 seat (suspension seat)
2 Seat cushion 3 Seat back 4 Cushion frame 6 Floor surface 13 Parallel link 14 Suspension mechanism 15 Suspension device 16 Fall prevention sheet 16a Upper edge portion 16b of fall prevention sheet Lower edge portion 16c of fall prevention sheet Intermediate portion 17 of fall prevention sheet 20 Seat back outer 21 Outer upper part 22 Outer side part 23 Inner accommodating space 24 Seat back rear face part 25 Headrest 26 Back outer frame 30 Seat back inner 31 Back inner frame 32 Back inner plate

Claims (1)

A suspension seat in which a seat back is divided into a seat back outer and a seat back inner, and the suspension device supports the cushion frame from below while allowing a relative vertical movement between the cushion frame and the floor surface. Because
An outer upper portion extending in the seat width direction at the upper portion of the seat back, a pair of outer side portions extending downward from both ends in the seat width direction of the outer upper portion, and the outer upper portion and the pair of outer side portions. The seat back outer having an inner housing space defined and a seat back rear surface portion covering the inner housing space from the rear;
The seat back inner supported by the cushion frame and housed in the inner housing space and moving up and down relative to the seat back outer following the up and down movement of the cushion frame;
A flexible seat material, an upper edge portion fixed to the upper portion of the seatback outer, a lower edge portion fixed to the upper portion of the seatback inner, and the seatback inner to the seatback outer And a fall prevention sheet having an intermediate part that is folded back in a U shape between the seat back inner part and the rear part of the seat back in an initial state where the seat back rises most.

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