JP2005289246A - Vehicular seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat easy to get on/get off a vehicle, and high in degree of versatility of design. <P>SOLUTION: The vehicular seat comprises: a seat body 10 which is turned around a rotary shaft R erected from a floor surface 2 of a vehicle 1 and arranged on the floor surface 2 of the vehicle 1 tiltably in the longitudinal direction; and an erection stay 25 which is arranged to extend between the floor surface 2 of the vehicle 1 and a lower part of the sheet body 10 and erected on the floor surface 2 of the vehicle 1 when the seat body 10 is turned around the rotary shaft R so as to be directed to an entrance 4 of the vehicle 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle seat.

  Conventionally, a vehicular seat that rotates to facilitate getting on and off the vehicle is known (see, for example, Patent Document 1). In this vehicle seat, for example, as shown in FIG. 9A, the rotation axis P of the vehicle seat is inclined with respect to the vertical axis V toward the rear side of the vehicle seat and the vehicle entrance / exit M side. Forms an angle θ1 with the vertical axis V. In the vehicle seat, the rotation axis P is shifted from the central portion of the seating portion S toward the rear side of the vehicle seat and toward the entrance / exit M.

In such a vehicle seat, since the rotation axis P is shifted as described above, when the seating portion S rotates around the rotation axis P so as to face the entrance / exit M, the front portion of the seating portion S is As shown in FIG. 9B, the vehicle protrudes from the entrance M of the vehicle toward the outside of the vehicle. Further, in this vehicle seat, since the rotation axis P is inclined as described above, when the seat portion S rotates around the rotation axis P so as to face the entrance / exit M, the front portion of the seat portion S is lowered. . As a result, the seat S is tilted downward at an angle θ2 about the rotation axis P. Therefore, according to this vehicle seat, the front portion of the seating portion S protrudes from the entrance / exit M of the vehicle toward the outside of the vehicle and the seating portion S tilts downward, so that getting on and off the vehicle is facilitated.
Japanese Unexamined Patent Publication No. 2000-326772 (see paragraph 0013, FIGS. 1 to 4)

  However, since this vehicle seat has a structure in which the seating portion S is tilted downward by lowering the front portion of the seating portion S, in order to tilt the seating portion S to such an extent that it is easy to get on and off, As shown in FIG. 9B, a sufficient clearance CL must be provided between the front portion of the seating portion S and the floor F of the vehicle. As a result, there is a problem that the degree of freedom in designing the vehicle seat is low.

  Then, this invention makes it a subject to provide the vehicle seat which makes the boarding / alighting with respect to a vehicle easy and has a high freedom degree of design.

  A vehicle seat according to claim 1 for solving the above-mentioned problem is disposed on the floor surface of the vehicle so as to rotate about a rotation shaft that stands upright with respect to the vehicle floor surface and to tilt in the front-rear direction. The seat body is disposed so as to extend between the floor surface of the vehicle and a lower portion of the seat body, and when the seat body rotates around the rotation axis so as to face the entrance of the vehicle, the vehicle body It is characterized by comprising an upstanding stay that is adapted to stand on the floor surface.

  In this vehicle seat, the seat body rotates about a rotation axis that stands upright with respect to the vehicle floor, so that the seat body can rotate so as to face the entrance of the vehicle. When the seat body rotates so as to face the entrance / exit, the standing stay arranged to extend between the floor surface of the vehicle and the lower portion of the seat body stands on the floor surface of the vehicle. As a result, the seat body is lifted by the standing stay. On the other hand, since the seat body is tiltable in the front-rear direction, the seat body tilts when the rear portion of the seat body is lifted. That is, in this vehicle seat, the seat main body faces the entrance / exit and the rear portion of the seat main body is lifted, so that it is easy to get on and off the vehicle.

  In this vehicle seat, the seat body is tilted by lifting the rear portion of the seat body with a standing stay. As a result, the vehicular seat is formed between the seat body and the vehicle floor surface so that the seat body can be tilted to such an extent that it can be easily boarded and exited, as in the case of a conventional vehicle seat in which the front portion is lowered and the seat body is tilted. There is no need to have sufficient clearance in between. Further, in the vehicle seat of the present invention, the height of the seat body is adjusted by adjusting the length of the standing stay regardless of the distance between the seat body and the vehicle floor, that is, the inclination angle of the seat body. Adjustment is possible. Therefore, according to the vehicle seat of the present invention, the degree of freedom in design is increased.

  According to a second aspect of the present invention, in the vehicle seat according to the first aspect, the rotation shaft is shifted from the central portion of the seat body toward the rear side of the seat body and toward the entrance / exit side of the vehicle. It is characterized by that.

  In this vehicle seat, since the rotation axis of the seat body is shifted toward the rear side of the seat body and closer to the entrance / exit, the seat body is rotated around the rotation axis so that the front portion of the seat body faces the entrance / exit. When it rotates to the front, the front part of the seat body protrudes from the entrance of the vehicle toward the outside of the vehicle. As a result, according to this vehicle seat, it becomes easier to get on and off the vehicle in combination with the inclination of the seat body as described above.

  According to a third aspect of the present invention, in the vehicle seat according to the first or second aspect, a pedestal in which a front end portion of the seat body is disposed on the floor surface of the vehicle and rotates around the rotation axis. It is characterized by being attached via a hinge.

  In this vehicle seat, since the front end portion of the seat body is attached to the pedestal via a hinge, the seat body is tiltable in the front-rear direction. Since the pedestal is arranged on the floor surface of the vehicle and rotates around the rotation axis described above, the seat body rotates around the rotation axis described above on the floor surface of the vehicle.

  According to a fourth aspect of the present invention, in the vehicle seat according to the third aspect, a push rod that pushes up the seat body is interposed between the pedestal and the seat body. .

  In this vehicle seat, since the push rod pushes up the seat body, the load applied to the standing stay when the seat body rotates around the rotation axis is reduced. As a result, in the vehicle seat, the seat body is lifted and the seat body is smoothly rotated.

  According to a fifth aspect of the present invention, in the vehicle seat according to the third aspect, between the pedestal and the seat body, the seat body is tilted by rotating the seat body around the hinge. An electric drive means is interposed.

  In this vehicle seat, the electric drive means rotates the seat body around the hinge of the seat body to tilt the seat body. At this time, the standing stay rises on the floor, and the seat body rotates around the rotation axis as the standing stay rises. Therefore, according to this vehicle seat, the seat body can be lifted (inclined) and the seat body can be automatically rotated by the electric drive means.

  Moreover, such an electric drive means may work to assist the force applied by the person to the seat body. According to the vehicle seat provided with such an electric driving means, the electric driving means drives the seat main body in an auxiliary manner in addition to the human force, so that the operation load applied by the person to the seat main body can be reduced. .

  According to the vehicle seat of the present invention, it is easy to get on and off the vehicle, and the degree of freedom of design is increased.

  Hereinafter, an embodiment of a vehicle seat of the present invention will be described in detail with reference to the drawings as appropriate. In the present embodiment, an example in which the vehicle seat of the present invention is applied to a passenger seat will be described. In the drawings to be referred to, FIG. 1 is a perspective view inside a vehicle in which a vehicle seat according to an embodiment of the present invention is arranged, and shows a state when the vehicle seat faces a vehicle entrance / exit, FIG. 2 is a rear view of the seat body constituting the vehicle seat, FIG. 3 is a schematic view showing the pedestal constituting the vehicle seat as viewed from above the vehicle, and FIG. 4 is attached to the floor of the vehicle. It is a figure which shows a vehicle seat, and is a side view in the XX line of FIG.

  As shown in FIG. 1, the vehicle seat 3 includes a seat body 10, a pedestal 20, a standing stay 25, and a push rod 27, and is attached to the floor surface 2 of the vehicle 1.

The seat body 10 can be of a known structure, and is mainly composed of, for example, a seating portion 11 on which an occupant sits and a backrest portion 12 on which the occupant rests.
As shown in FIG. 2, a frame 13 is fixed to the back side of the seating portion 11, and the frame 13 includes a pair of side frames 13 b disposed along both side edges of the seating portion 11 and the seating portion 11. The front frame 13a is disposed at the front edge, and the center frame 13c is disposed at the center of the seating portion 11 and is passed over each of the pair of side frames 13b. A connecting portion 15a is formed on the front frame 13a. This connection part 15a comprises the hinge 15 (refer FIG. 4) mentioned later by connecting with the connection part 15b (refer FIG. 3) mentioned later provided in the front end of the base 20 (refer FIG. 1). A universal joint 16a to which one end of the standing stay 25 (see FIG. 1) is attached is provided at the center of the center frame 13c. At the center of each side frame 13b, a universal joint 17a to which one end of a push rod 27 (see FIG. 1) is attached is provided.

  As shown in FIG. 3, the pedestal 20 is a rectangular plate-like body disposed on the floor surface 2 of the vehicle 1, and at the front end thereof, that is, the front side end of the vehicle 1, A connecting portion 15b connected to a connecting portion 15a (see FIG. 2) provided on the front frame 13a (see FIG. 2) is formed. As shown in FIG. 4, the connecting portion 15 b and the connecting portion 15 a of the front frame 13 a are connected to each other to constitute a hinge 15. By being attached to, it is possible to tilt in the front-rear direction.

  As is clear from FIG. 3, the pedestal 20 rotates around the rotation axis R on the floor surface 2 of the vehicle 1. The rotation axis R stands upright with respect to the floor surface 2 of the vehicle 1, as is apparent with reference to FIG. 1 again. Further, as shown in FIG. 3, the rotation axis R is set closer to the rear side (rear direction side of the vehicle) of the base 20 and closer to the entrance / exit 4 of the vehicle, and is attached to the base 20. The sheet main body 10 rotates around the rotation axis R. That is, the seat body 10 rotates around the rotation axis R shifted from the central portion C of the seat body 10 toward the rear side (rear side of the vehicle) of the seat body 10 and closer to the entrance / exit 4 side. Yes.

  As shown in FIG. 3, the pedestal 20 is formed with a slit 21 through which the standing stay 25 is inserted. The slit 21 is formed by piercing the pedestal 20 so that the standing stay 25 can stand on the floor surface 2 of the vehicle 1 when the seat body 10 rotates around the rotation axis R as will be described later. It has been done.

  Further, as shown in FIG. 3, the pedestal 20 is provided with a pair of universal joints 17 b on both side edges near the rear side of the pedestal 20. As shown in FIG. 4, the other end of a push rod 27 having one end attached to the universal joint 17a on the side frame 13b side is attached to the universal joint 17b.

  As shown in FIG. 4, the standing stay 25 is disposed so as to extend between the floor surface 2 and the lower portion of the seat body 10, specifically, the center frame 13 c. The standing stay 25 is a rod-like member having rigidity. One end of the standing stay 25 is attached to a universal joint 16b provided on the floor surface 2, and can swing about the universal joint 16b. The other end of the standing stay 25 is attached to a universal joint 16a on the center frame 13c side, and the standing stay 25 can swing around the universal joint 16a. The standing stay 25 is inserted through a slit 21 formed in the base 20.

  As shown in FIG. 4, the push rod 27 is disposed between the seat body 10 (seat portion 11) and the pedestal 20, and one end thereof is attached to the universal joint 17a on the side frame 13b side. The end is attached to the universal joint 17b on the base 20 side. The push rod 27 urges the seat body 10 in the direction of pushing up. The push rod 27 may be of a known structure. For example, the push rod 27 is disposed in the cylindrical portion 27b and a cylindrical portion 27b made of a tubular member through which the axial portion 27a is inserted. And a spring portion (not shown) that urges the shaft portion 27a in a direction protruding from the cylindrical portion 27b.

  Next, the operation of the vehicle seat according to the present embodiment will be described with reference to the drawings as appropriate. In the drawings to be referred to, FIG. 5 (a) is a perspective view showing the vehicle seat before rotation as seen from the rear, and FIG. 5 (b) is when the vehicle seat rotates toward the entrance / exit. FIG. 6 is a schematic diagram showing a state when the vehicle seat is rotated toward the entrance / exit. FIG. 7 is a diagram showing a state where the vehicle seat is viewed from the outside of the vehicle, and FIG. It is a schematic diagram which shows a mode when a vehicle seat rotates toward the entrance / exit, and is a figure which shows a mode that the vehicle seat was looked down on from the inside of a vehicle.

  As shown in FIG. 4, the vehicle seat 3 according to the present embodiment has the front end portion of the seat body 10, that is, the front frame 13 a of the frame 13 attached to the pedestal 20 via the hinge 15. Is tiltable in the front-rear direction. As shown in FIG. 5A, the pedestal 20 is arranged on the floor surface 2 and rotates around a rotation axis R that stands upright with respect to the floor surface 2. As a result, the seat body 10 is rotatable about the rotation axis R on the floor surface 2, and thus the seat body 10 is rotatable so as to face the entrance / exit 4.

  In the vehicle seat 3, as shown in FIG. 5A, when the seat body 10 rotates toward the entrance / exit 4, the standing stay 25 rises on the floor surface 2. As a result, the standing stay 25 lifts the seat body 10. On the other hand, in the vehicle seat, since the seat body 10 is tiltable in the front-rear direction, the seat body 10 is tilted when the rear portion is lifted.

  At this time, the push rod 27 urges the seat body 10 in the direction of pushing up, so that the push rod 27 reduces the load applied to the standing stay 25 when the seat body 10 rotates around the rotation axis R. As a result, in the vehicle seat 3, the seat body 10 is lifted and the seat body 10 is smoothly rotated.

  In the vehicle seat 3, when the seat body 10 has finished rotating so as to face the entrance / exit 4, the standing stay 25 stands on the floor surface 2 as shown in FIG. Thus, operation | movement of this vehicle seat 3 is complete | finished when the standing stay 25 stands. In addition, when this vehicle seat 3 returns to the original position, an operation opposite to the above-described operation is performed.

  According to such a vehicle seat 3, as shown in FIG. 6, when the seat body 10 rotates, the backrest 12 faces the entrance / exit 4. As a result, the vehicle seat 3 facilitates getting on and off the vehicle 1. In FIG. 6, the sheet body 10 indicated by a one-dot chain line indicates the position of the sheet body 10 before rotation.

  Further, according to the vehicle seat 3, the seat body 10 tilts when the rear portion of the seat body 10 is lifted by the standing stay 25 (see FIG. 5B), so that the backrest portion 12 is provided as shown in FIG. 6. Get closer to boarding gate 4 As a result, the vehicle seat 3 facilitates getting on and off the vehicle 1.

  Further, in the vehicle seat 3, the rear portion of the seat body 10 lifted by the standing stay 25 (see FIG. 5B) is lifted. As a result, as shown in FIG. 6, the seat body 11 tilts forward as the seat body 10 tilts, so that the occupant can easily land outside the vehicle while sitting on the seat 11. Therefore, according to this vehicle seat 3, getting on and off the vehicle 1 is facilitated.

  Further, in the vehicle seat 3, as shown in FIG. 3, the rotation axis R of the seat body 10 is located closer to the rear side (rear side of the vehicle) of the seat body 10 from the central portion C of the seat body 10 and gets Shifted toward the mouth 4 side. As a result, as shown in FIG. 7, when the seat body 10 rotates around the rotation axis R, the front portion of the seat body 10 protrudes from the vehicle entrance / exit 4 toward the vehicle exterior. As a result, the occupant can easily land on the outside of the vehicle while sitting on the seating portion 11, so that the vehicle 1 can easily get on and off. In FIG. 7, the sheet body 10 indicated by a dotted line indicates the position of the sheet body 10 before rotation.

  Further, as shown in FIG. 4, the vehicle seat 3 tilts the seat body 10 by lifting the rear portion of the seat body 10 with a standing stay 25. As a result, the vehicle seat 3 is provided with the seat body 10 and the floor surface in order to tilt the seat body 10 to such an extent that it can be easily boarded and exited, like a conventional vehicle seat in which the front portion is lowered and the seat body is tilted. There is no need to provide sufficient clearance between the two. In the vehicle seat 3, the height of the seat body 10 is adjusted by adjusting the length of the standing stay 25 regardless of the distance between the seat body 10 and the floor surface 2, that is, the inclination of the seat body 10. The angle can be adjusted. Therefore, according to the vehicle seat 3, the degree of freedom in design can be increased.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, in the above-described embodiment, the universal joint 16a and the universal joint 16b are used for attaching the standing stay 25 to the center frame 13c and the floor surface 2, and the universal joint 17a is used for attaching the push rod 27 to the side frame 13b and the pedestal 20. However, the present invention is not limited to this, and instead, for example, a ball joint, a pivot bearing, or the like may be used.

  Further, in the embodiment, the standing stay 25 extending between the floor surface 2 and the lower portion of the seat body 10 is disposed so as to be inserted into the slit 21 formed in the base 20. The present invention is not limited to this, and as shown in FIG. 8, the upright stay 25 may be disposed so as to extend from the floor surface 2 around the pedestal 20 to the lower part of the seat body 10. In FIG. 8, reference numeral 16 a indicates a universal joint that attaches one end of the standing stay 25 to the seat body 10, and reference numeral 16 b indicates a universal joint that attaches the other end of the standing stay 25 to the floor surface 2.

  Moreover, in the said embodiment, although rotation and inclination of the sheet | seat main body 10 are performed by human power, this invention is not limited to this, and rotation and inclination of the sheet | seat main body 10 are electrically performed. It may be a thing. Such a vehicle seat can be configured by interposing an electric drive means between the pedestal 20 and the seat body 10 for rotating the seat body 10 around the hinge 15 to tilt the seat body 10. it can. Such an electric drive means may generate an urging force that pushes up the frame 13 attached to the seat body 10 or generates a rotational force so that the seat body 10 rotates around the hinge 15. You may do. As such an electric drive means, for example, one constituted by a power transmission mechanism such as an electric motor and a gear can be cited.

  In this vehicle seat, the electric drive means rotates the seat body 10 around the hinge 15 to tilt the seat body 10. At this time, the standing stay 25 rises on the floor 2 and the seat body 10 rotates around the rotation axis R as the standing stay 25 rises. Therefore, according to this vehicle seat, the seat body 10 can be lifted (tilted) and the seat body 10 can be automatically rotated by the electric drive means.

  Moreover, such an electric drive means may work to assist the force applied by the person to the seat body 10. According to the vehicle seat provided with such an electric driving means, the electric driving means drives the seat body 10 in an auxiliary manner in addition to the human force, thereby reducing the operation load applied by the person to the seat body 10. Can do.

  The electric drive means may be one that rotates the pedestal 20 around the rotation axis R in addition to the above.

  Further, the present invention may be such that when the seat body 10 is rotated electrically as described above, the seat body 10 rotates in conjunction with opening and closing of the door of the vehicle 1.

  In the present invention, in order to smoothly rotate the pedestal 20 on the floor 2, for example, a guide rail that guides the pedestal 20 in the rotation direction is disposed between the floor 2 and the pedestal 20. It may be a vehicle seat.

It is a perspective view in a car where a vehicular seat concerning an embodiment of the present invention is arranged, and is a figure showing a situation when a vehicular seat is facing the door side. It is a reverse view of the seat main body which comprises the vehicle seat of FIG. It is a schematic diagram which shows a mode that the base which comprises the vehicle seat of FIG. 1 was seen from the vehicle upper direction. It is a side view of the vehicle seat of FIG. FIG. 5A is a perspective view showing a state in which the vehicle seat before rotation is viewed from behind, and FIG. 5B is a perspective view showing a state in which the vehicle seat rotates toward the entrance / exit. FIG. It is a schematic diagram which shows a mode when the vehicle seat rotates toward the entrance / exit, and is a figure which shows a mode that the vehicle seat was seen from the vehicle outer side. It is a schematic diagram which shows a mode when a vehicle seat rotates toward the entrance / exit, and is a figure which shows a mode that the vehicle seat was looked down on from the inside of a vehicle. It is a schematic diagram which shows the arrangement position of the standing stay in the vehicle seat which concerns on other embodiment. 9A is a perspective view showing a conventional vehicle seat, and FIG. 9B is a rear view of the vehicle when the vehicle seat in FIG. 9A is rotated toward the entrance of the vehicle. It is the schematic diagram seen from.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Floor surface 3 Vehicle seat 4 Entrance / exit 10 Seat body 15 Hinge 20 Base 25 Standing stay 27 Push rod R Rotating shaft

Claims (5)

A seat body that rotates around a rotation axis that stands upright with respect to the floor surface of the vehicle and that can be tilted in the front-rear direction so as to be freely tiltable in the front and rear directions of the vehicle
Arranged on the floor surface of the vehicle when the seat body is rotated about the rotation axis so as to face the entrance of the vehicle, and is arranged to extend between the floor surface of the vehicle and a lower portion of the seat body. A vehicle seat comprising a standing stay configured to stand.   2. The vehicle seat according to claim 1, wherein the rotation shaft is shifted from a central portion of the seat body toward the rear side of the seat body and toward the entrance / exit of the vehicle.   The front end portion of the seat body is attached to a pedestal disposed on the floor surface of the vehicle and rotating around the rotation axis via a hinge. Vehicle seat.   The vehicle seat according to claim 3, wherein a push rod for pushing up the seat body is interposed between the pedestal and the seat body.   The electric drive means for tilting the seat body by rotating the seat body around the hinge is interposed between the pedestal and the seat body. Vehicle seat.

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