JP2007050770A - Vehicular seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat for a plurality of occupants to sit on, enabling an occupant in a center part to sit on without narrowing the seat surface widths for the occupants in side parts. <P>SOLUTION: In the vehicular seat enabling the plurality of the occupants to sit side by side, a generally center part of a seat cushion is divided to form a seat cushion divided portion 5 in which the occupants can be seated. The seat cushion divided portion 5 is structured so as to freely move to the seat cushion main body portion 4. The seat cushion divided portion 5 is actuated to dispose a front end portion 43 of the seat cushion divided portion 5 at an upper side than the seat cushion main body portion 4 and a vehicular front side rather than a front end portion 44 of the seat cushion main body portion 4 when the occupant 45 is seated. Therefore, the femur inside 48 of the occupant 45 is supported by both side surfaces 49 of the seat cushion divided portion 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a vehicle seat provided with a seat cushion dividing portion that can be normally used as a normal seat and can be seated by a passenger such as a child as required.

 Since the vehicle seat is usually manufactured in consideration of the physique of an adult, the adult can sit in a stable posture. However, if a child having a physique smaller than an adult is seated, the posture becomes unstable.

  Therefore, conventionally, a separate child-specific seat manufactured in consideration of the child's physique is used, and the child-specific seat is attached to the seat surface of the vehicle seat so that the child can sit on the child-specific seat. It is done.

  However, since the separate seat for children is still installed on the seat, when it is not in use, the occupied space in the passenger compartment is narrowed, which becomes an obstacle.

Therefore, as one of this type of seat that is usually used as a normal seat but can be used as a child-only seat as required, for example, Japanese Patent Application Laid-Open No. 9-30300 discloses a multifunctional armrest combined function. A sheet is disclosed. This multi-functional seat is divided into a front seat cushion and a rear seat cushion, and the front seat cushion is connected to the vehicle body via a link arm. It can be used as a child seat and an armrest by supporting it up and down.
Japanese Patent Laid-Open No. 9-30300

  However, as in the above-described technique, when the rear seat is arranged with the two side portions and the central portion aligned in the vehicle width direction, in order to secure the seating surface width for seating the child in the central portion, There is a problem that the seating surface width of the side portion becomes narrow.

Therefore, the present invention has been made in view of the above-described circumstances, and an object thereof is to provide a vehicle seat that can secure a sufficient seating surface width of a side occupant.

In order to achieve the above object, according to the present invention, in a vehicle seat in which a plurality of occupants can be seated side by side, a seat cushion split portion in which a part of the seat cushion is divided and a occupant can sit. The seat cushion divided portion is configured to be movable with respect to the seat cushion main body portion, and when the occupant is seated, the seat cushion divided portion is operated, and the front end portion of the seat cushion divided portion is The most important feature is that it is arranged above the main body part and on the front side of the vehicle from the front end part of the seat cushion main body part so that the inside of the thigh of the occupant is supported by both side surfaces of the seat cushion split part And

 According to the present invention, the seat cushion divided portion is configured to support the occupant's thigh inner side on both side surfaces of the seat cushion divided portion, thereby supporting the occupant's waist at the left and right ends of the seat surface. Since the width dimension can be made narrower than the conventional seat supported by the portion, the seating surface width of the seat cushion main body portion can be sufficiently ensured. In addition, since the front end of the seat cushion split part can be moved to the upper side of the seat cushion main body part and to the front side of the vehicle from the front end part of the seat cushion main part, the passenger of the seat cushion split part and the seat cushion main part Can be seated with an offset in the vehicle longitudinal direction and the vertical direction. As a result, the occupant's legs straddling the seat cushion dividing portion do not interfere with the occupant of the seat cushion main body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 10 show an embodiment of a vehicle seat according to the present invention, FIG. 1 is a perspective view of a vehicle seat in a normal use state, and FIG. 2 is a sectional view of a seat cushion taken along line AA in FIG. 3 is a plan view of FIG. 1 with the link mechanism of the seat cushion division part omitted, FIG. 4 is a cross-sectional view of the seat back along the AA line of FIG. 1, and FIG. 5 moves the seat cushion division part of the AA line of FIG. FIG. 6 is a cross-sectional view of the seat back when the seat back split portion is moved along the AA line of FIG. 1, and FIG. 7 is a seat cushion split portion and seat according to the embodiment of the present invention. FIG. 2 is a cross-sectional view of the seat taken along line AA in FIG. 1 for explaining the movement of the back dividing portion, where (a) is a normal use state, (b) is an intermediate state between (a) and (c), (c ) Is a state in which an occupant is seated on the seat cushion division part, and FIG. 8 is a diagram in the embodiment of the present invention. FIG. 9 is a perspective view of a state in which an occupant is seated on the seat cushion division part and the seat cushion main body part, and FIG. 9 is a front view comparing the seat cushion width dimension distribution between the present embodiment and the conventional form in FIG. (A) is the present embodiment, (b) is a conventional configuration, and FIG. 10 is a side view comparing the occupant arrangement in the vehicle longitudinal direction between the present embodiment and the conventional configuration in FIG. , (A) is the present embodiment, and (b) is a conventional form.

  First, the overall configuration of the present embodiment will be described with reference to FIG.

The seat 1 is composed of a seat cushion 2 and a seat back 3, and is set to a specification that allows three passengers to be seated side by side, and is attached to a vehicle body part (not shown). The seat cushion 2 includes a seat cushion main body 4 and a seat cushion split portion 5. The seat cushion dividing portion 5 is obtained by dividing the substantially central portion of the seat cushion 2, and is configured to be movable with respect to the seat cushion main body portion 4.

Further, the seat back 3 is divided into a right back 6 and a left back 7, and the right back 6 further includes a seat back main body portion 8 and a seat back split portion 9. The seat back dividing portion 9 is obtained by dividing a portion corresponding to the seat cushion dividing portion 5 of the right back 6 and is configured to be movable with respect to the seat back main body portion 8.

  Next, a cushion link mechanism 10 that enables the seat cushion dividing portion 5 to be raised and lowered will be described with reference to FIG. A lower base frame 11 that forms the entire seat cushion body 4 is integrally formed with the lower trim pad 12 in the seat cushion body 4. A lower base plate 13 is welded to the lower base frame 11, and lower base plate flanges 14 that are opposed to each other in the width direction of the lower base plate 13 are provided. In the present embodiment, a mechanism is provided on both sides of the lower base plate flange 14 so that the seat cushion dividing portion 5 can be raised and lowered. However, since it has the same configuration, the mechanism on one side will be described.

A front link 15 and a rear link 16 are rotatably attached to the lower base plate flange 14 via a front lower pin 17 and a rear lower pin 18. An upper base frame 19 that forms the entire seat cushion dividing portion 5 is integrally formed with the upper trim pad 20 in the seat cushion dividing portion 5. An upper base plate 21 is welded to the upper base frame 19, and upper base plate flanges 22 that face each other in the width direction of the upper base plate 21 are provided. A front link 15 and a rear link 16 are rotatably attached to the upper base plate flange 22 via a front upper pin 23 and a rear upper pin 24.

  Next, a drive device of the cushion link mechanism 10 that enables the seat cushion dividing portion 5 to be raised and lowered will be described with reference to FIG. A cushion link rod 25 that extends in the vehicle width direction and connects the rear links 16 on both sides is rotatably attached to the rear lower pin 18. A cushion link rod gear 26 is fixed to the cushion link rod 25 in the circumferential direction, and a cushion motor gear 28 and a cushion link rod gear 26 that are rotated by the rotational force of the cushion motor 27 are engaged with each other. The cushion link rod gear 26, the cushion motor gear 28, and the cushion motor 27 are covered with a cushion motor housing 29.

The cushion motor 27 is connected to a harness (not shown), and the harness is connected to a cushion raising / lowering switch unit that switches between forward rotation driving, negative rotation driving, and driving stop of the cushion motor 27.

Next, the back link mechanism 30 that enables the seat back division unit 9 to move forward will be described with reference to FIG.

The right back 6 is formed entirely by a back frame 31 and has a reclining mechanism 32 that can arbitrarily change the inclination angle of the right back 6. A seat back split section 9 is rotatably attached to an upper cross frame 33 that is an upper end portion of the back frame 31. A back motor 34 is attached to the back frame 31 via an attachment member (not shown), and a back motor gear 35 that is driven in conjunction with the rotation of the back motor 34 is attached to the back motor 34. The back motor gear 35 meshes with a back link rod gear 37 provided on a part of the back link rod 36, and transmits the rotational force of the back motor 34 to the back link rod 36. The back link rod 36 is welded with a pair of back links 38 that extend to the seat back dividing portion 9. One end of the back link 38 is welded to the back link rod 36, and a back link pin 39 is formed at the other end. The seat back splitting portion 9 is provided with a slide bracket 41 having a long hole portion 40, and the back link pin 39 is engaged so as to be movable in the longitudinal direction of the long hole portion 40. The back motor 34, the back motor gear 35, and the back link rod gear 37 are covered with a back motor housing 42. The back motor 34 is connected to a harness (not shown), and the harness is connected to a back forward movement switch unit that switches between a positive rotation drive, a negative rotation drive, and a drive stop of the back motor 34.

 In such a configuration, the cushion motor 27 is driven in the clockwise direction in FIG. 2 while the seat cushion dividing portion 5 in FIG. 2 is not moving, so that the rotational force is transmitted from the cushion motor gear 28 to the cushion link rod gear 26. Then, the cushion link rod 25 is rotated counterclockwise in FIG. By the rotation of the cushion link rod 25, the connected rear link 16 rotates about the rear lower pin 18 counterclockwise in FIG. In addition, the seat cushion body 4 is moved to the front side of the vehicle from the front end 44 of the seat cushion main body 4 to be in the state shown in FIG.

  Conversely, the rotational force is transmitted from the cushion motor gear 28 to the cushion link rod gear 26 when the cushion motor 27 is driven counterclockwise in FIG. The cushion link rod 25 is rotated clockwise in FIG. The rotation of the cushion link rod 25 causes the connected rear link 16 to rotate about the rear lower pin 18 in the clockwise direction in FIG. 5 to return the seat cushion dividing portion 5 to the position in FIG.

  Also, the rotational force is transmitted from the back motor gear 35 to the back link rod gear 37 when the back motor 34 is driven counterclockwise in FIG. Then, the back link rod 36 is rotated clockwise in FIG. Due to the rotation of the back link rod 36, the welded back link 38 rotates around the back link rod 36 in the clockwise direction in FIG. As a result, the back link pin 39 rotates the seat back split portion 9 clockwise around the upper cross frame 33 while sliding the long hole portion 40 in the clockwise direction in FIG. 6 is moved to the front of the vehicle with respect to the portion 8, and the state shown in FIG.

  Conversely, when the seatback splitting section 9 of FIG. 6 is moved forward of the vehicle, the back motor 34 is driven clockwise in FIG. 6, so that the rotational force is generated from the back motor gear 35 to the back link rod gear 37. The transmitted back link rod 36 is rotated counterclockwise in FIG. Due to the rotation of the back link rod 36, the welded back link 38 rotates counterclockwise in FIG. As a result, the back link pin 39 rotates the seat back dividing portion 9 counterclockwise in FIG. 6 around the upper cross frame 33 while sliding the long hole portion 40, and the seat back dividing portion 9 is rotated as shown in FIG. Return to the position.

  That is, as shown in FIG. 7 (a), the substantially central portion of the seat 1 of the present invention can be normally used as a normal seat, and when an occupant 45 with a low seating height such as a child is seated, FIG. As shown in (b), the front end portion 43 of the seat cushion dividing portion 5 is moved above the seat cushion main body portion 4 and further to the front side of the vehicle than the front end portion 44 of the seat cushion main body portion 4 by the cushion link mechanism 10. In addition, the right back 6 is tilted forward by the reclining mechanism 32, and the seat back split section 9 is rotated around the upper cross frame 33 by the back link mechanism 30 as shown in FIG. The portion 9 is moved forward of the vehicle with respect to the seat back main body portion 8.

  Hereinafter, the effects of the present embodiment will be described with reference to FIGS.

 (1) As shown in FIG. 8, an occupant 45 is seated in the seat cushion split part 5 of the vehicle seat where a plurality of occupants can be seated side by side, and an occupant 46 is seated in the seat cushion body 4. 9 (a), the seat cushion split part 5 is set to a width dimension of about 47 between the sciatic nodules of the occupant 45, and the thigh inner side 48 of the occupant 45 is connected to the seat cushion split part 5. It is configured to be supported by both side surfaces 49. Accordingly, the width dimension 53 of the seat cushion split portion 5 is compared with the conventional seat 51 that supports the waist portion 50 of the occupant 45 shown in FIG. Since it can be narrowed, a sufficient seating surface width of the seat cushion body 4 can be secured. Further, since the front end portion 43 of the seat cushion dividing portion 5 is movable above the seat cushion main body portion 4 and further toward the vehicle front side than the front end portion 44 of the seat cushion main body portion 4, FIG. As shown, the occupant 45 of the seat cushion dividing portion 5 and the occupant 46 of the seat cushion main body portion 4 can be seated offset in the vehicle front-rear direction. Thus, unlike the conventional state in which the occupant 45 and the occupant 46 shown in FIG. 10 (b) are seated side by side, the leg portion of the occupant 45 straddling the seat cushion split part 5 is the seat cushion body part. It doesn't get in the way of 4 crew member 46.

 (2) By configuring the seat back split part 9 to be movable forward of the vehicle with respect to the seat back main body part 8, the back part of the occupant 45 of the seat cushion split part 5 can be supported.

 (3) By configuring the seat cushion split part 5 to be movable via the cushion link mechanism 10, the front end 43 of the seat cushion split part 5 is located above the seat cushion main body part 4 in one operation. In addition, the seat cushion main body 4 can move to the front side of the vehicle from the front end 44.

   By the way, in the above-described embodiment, the description has been given by taking, as an example, a vehicle seat with a specification in which three passengers can be seated side by side, but it can also be adopted for a vehicle seat with a specification in which one passenger can sit. it can.

   Moreover, although the vehicle seat of the present invention has been described by taking the above embodiment as an example, the present invention is not limited to this embodiment, and various other embodiments can be adopted without departing from the gist of the present invention.

1 is a perspective view of a vehicle seat in a normal use state according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the seat cushion taken along line AA in FIG. FIG. 2 is a plan view of FIG. 1 in which a link mechanism of a seat cushion dividing portion is omitted. FIG. 2 is a cross-sectional view of a seat back taken along line AA in FIG. FIG. 2 is a cross-sectional view of the seat cushion when the seat cushion dividing portion along the line AA in FIG. 1 is moved. FIG. 2 is a cross-sectional view of the seat back when the seat back dividing unit is moved along line AA in FIG. FIG. 2 is a cross-sectional view of the seat taken along line AA in FIG. 1 for explaining the movement of the seat cushion split portion and the seat back split portion in the embodiment of the present invention, (a) is a normal use state, (b) is (a) And (c) shows a state in which an occupant is seated on the seat cushion divided portion. It is a perspective view in the state where a crew member sat in the seat cushion division part and seat cushion main part in the embodiment of the present invention. FIG. 9 is a front view in which the seat cushion width dimensional distribution between the present embodiment and the conventional embodiment in FIG. 8 is compared, (a) showing the present embodiment, and (b) showing the conventional embodiment. FIG. 9 is a side view comparing the occupant arrangement in the vehicle front-rear direction between the present embodiment and the conventional form in FIG. 8, (a) showing the present embodiment, and (b) showing the conventional form.

Explanation of symbols

1 seat (vehicle seat)
2 Seat cushion
3 Seat back
4 Seat cushion body
5 Seat cushion division
9 Seat back division
10 Cushion link mechanism (link mechanism)
43 Front end
44 Front end
45 Crew
48 thigh inside
49 Both sides

Claims (4)

In a vehicle seat in which a plurality of passengers can be seated side by side,
A part of the seat cushion is divided to form a seat cushion split part that can be seated by the occupant, and the seat cushion split part is configured to be movable with respect to the seat cushion main body part. Actuate the cushion split part, and place the front end of the seat cushion split part above the seat cushion main body part and the front side of the seat cushion main body part in front of the vehicle. A vehicle seat characterized in that the vehicle seat is configured to be supported on both side surfaces of the divided portion.  A portion corresponding to the seat cushion division portion of the seat back is divided to form a seat back division portion, and the seat back division portion is configured to be movable forward of the vehicle with respect to the seat back main body portion. 2. The vehicle seat according to claim 1.  3. The vehicle seat according to claim 1, wherein the seat cushion dividing portion is configured to be movable via a link mechanism.  A part of the seat cushion is divided to form a seat cushion split part that can be seated by the occupant, and the seat cushion split part is configured to be movable with respect to the seat cushion main body part. Actuate the cushion split part, and place the front end of the seat cushion split part above the seat cushion main body part and the front side of the seat cushion main body part in front of the vehicle. A vehicle seat characterized in that the vehicle seat is configured to be supported on both side surfaces of the divided portion.

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