JP3195149B2 - Vehicle seat device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat apparatus having a plurality of seats arranged on a floor of a vehicle such as a railway vehicle, a bus, a ship, etc., and a rotatable seat provided on each seat. It is.

[0002]

2. Description of the Related Art For example, as a seat device for a railway vehicle,
Conventionally, as shown in FIG. 8, a plurality of seats 51 are arranged in a row on a floor F of a railway vehicle, and a three-seat seat 53 is rotatably supported on a base 52 of each seat 51. A technique is known in which the seat 53 of the seat 51 is alternately rotated by 180 ° to change the seating direction.

Conventionally, as shown in FIG. 9, a base 52 is installed near a wall W of a railway vehicle, and a base 5 on the side of the passage P is provided.
A technique for fixing the armrest 54 to the armrest 2 and rotating the seat 53 inside the armrest 54 is also known.

[0004]

However, according to the conventional apparatus shown in FIG. 8, the front edge of the seat 53 is formed in a straight line, so that the front and rear seats 53 do not collide with each other during rotation. The seats 51 need to be installed at a large pitch, and there is a problem that the installation space of the seats in the longitudinal direction of the vehicle increases.

In the case of the conventional apparatus shown in FIG. 9, the armrest 54 must be protruded toward the passage P so that the seat 53 does not collide with the armrest 54 during rotation. There was a problem of expansion.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle seat device capable of reducing a seat installation space.

[0007]

According to the present invention, a plurality of seats are arranged on a floor of a vehicle.
In a vehicle seat apparatus in which each seat includes a base and a seat rotatable with respect to the base, a maximum radius portion of a seat portion of an adjacent seat does not contact with a front edge of the seat portion during rotation. The recess is formed so as to pass therethrough. Here, it is preferable that the concave portion is formed at the center of the front edge of the seat portion, and the left and right portions of the front edge of the seat portion are thigh receiving portions that can receive both thighs of a seated person.
Also, it is preferable that the maximum radius portion of the seat portion be cut off obliquely.

According to another aspect of the present invention, a plurality of seats are arranged on a floor of a vehicle, and each seat includes a base, a seat rotatable with respect to the base, and an armrest fixed to the base. In the vehicle seat device configured to include the armrest, a concave portion is formed on an inner surface of the armrest so that a maximum radius portion of the seat portion passes through in a non-contact manner when rotating. Here also, the maximum radius of the seat may be cut out obliquely.

[0009]

According to the vehicle seat apparatus of the present invention, when the seat rotates, the largest radius portion passes through the recess formed in the front edge of the seat of the adjacent seat in a non-contact manner. Therefore, the inter-seat pitch can be reduced by the depth of the concave portion, and the installation space in the seat arranging direction can be reduced. Further, if the concave portion is formed at the center of the front edge of the seat portion, and the left and right portions of the front edge of the seat portion are thigh receiving portions that can receive the thighs of the occupant, the thigh receiving portions allow the thigh receiving portions to receive The thigh can be supported comfortably. Also, if the maximum radius of the seat is cut off obliquely, the maximum turning radius of the seat is reduced, and the pitch between seats is further reduced.

According to another vehicle seat device of the present invention, when the seat rotates, the largest radius portion thereof passes through the recess formed in the armrest in a non-contact manner. Therefore, the armrest is provided at a position close to the rotation center of the seat portion by the depth of the concave portion, and the installation space in the width direction of the seat can be reduced. Furthermore, if the maximum radius of the seat is cut off obliquely, the maximum radius of rotation of the seat is reduced, so that the armrest can be provided closer to the center of rotation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment in which the present invention is embodied in a seat device for a railway vehicle will be described with reference to FIGS. A plurality of three-seat seats 1 are provided on a floor surface F of a railway vehicle in the longitudinal direction of the vehicle. Each seat 1 has a base 2 and 18
0 ° rotatable seat 3 and reclining backrest 4
And an armrest 5. The base 2 has a seat 3
And a foot pedal 8 for releasing the lock of the seat 3 with respect to the base 2. The armrest 5 is provided with a reclining release button 9 for returning the backrest 4 from the reclining position to the upright position.

The seat 3 is composed of three seat cushions 3a to 3c. A concave portion 11 is formed at the center of the front edge of each of the seat cushions 3a to 3c. In particular, the concave portion 11 of the central seat cushion 3b is connected to the largest radius portion 1 of the seat portion 3 of the adjacent seat 1.
3, that is, in this case, the front corners of the left and right seat cushions 3a, 3c can pass through in a non-contact manner during rotation. The concave portion 11 is formed in a shape substantially similar to the rotation locus of the maximum radius portion 13.
Has a flat surface, and both side portions 11b have a gentle slope. The left and right seat cushions 3
Although the concave portions 11 do not necessarily need to be provided in a and 3c, they are provided in the present embodiment for unifying the designs. Further, in order to reduce the maximum turning radius of the seat 3, each of the maximum radius portions 13 is cut off obliquely. Also,
The left and right portions of the front edge of each of the seat cushions 3a to 3c are left as thigh receiving portions 12 that can receive the thighs of the seated person without being recessed.

A notch 14 is provided at the rear corner of the left and right seat cushions 3a, 3c to reduce the radius of rotation of this portion (see FIG. 3). In addition, a recess 15 through which the armrest 5 outside the adjacent seat 1 passes without contact is provided on the back of the backrest 4 (see FIG. 1).

In the seat apparatus of the first embodiment configured as described above, when changing the seating direction of the seat 1, first, the backrest 4 is returned from the reclining position to the upright position, and then the seat 3 Is rotated by the motor mechanism 7 or manually. When the seat portion 3 rotates, the maximum radius portion 13 passes through the concave portion 11 formed in the central seat cushion 3b in a non-contact manner without colliding with the seat portion 3 of the adjacent seat 1. Therefore, the pitch between the seats can be reduced by the depth of the concave portion 11, and the installation space of the seat 1 in the longitudinal direction of the vehicle can be reduced.

Further, since the maximum radius portion 13 of the seat 3 is cut off obliquely, the maximum rotation radius of the seat 3 can be reduced, and the pitch between seats can be further reduced. Further, since the left and right portions of the front edge of each of the seat cushions 3a to 3c are left as the thigh receiving portions 12, the thigh receiving portions 12 can comfortably support both occupants' thighs, and the recess 11 reduces the sitting comfort. There is no fear.

Next, a second embodiment in which the present invention is embodied in a seat device for a railway vehicle will be described with reference to FIGS.
As in the first embodiment, a plurality of three-seat seats 21 are provided on the floor surface F of the railway vehicle in the longitudinal direction of the vehicle. Each seat 21 includes a base 22, a 180-degree rotatable seat 23, a backrest 24, and an armrest 25. The base 22 is provided with a motor mechanism 27 and a foot pedal 28. The maximum radius portion 30 of the seat portion 23, that is, both front corner portions are formed obliquely.

Unlike the first embodiment, the armrest 25 is fixed to the base 22 on the side of the passage P of the railway vehicle so that the seat 23 rotates inside the armrest. On the inner surface of the armrest 25, a concave portion 31 having a cylindrical surface shape similar to the rotation locus of the maximum radius portion 30 is formed (see FIG. 7), and the maximum radius portion 30 can pass through the concave portion 31 without contact. ing.

Although the backrest 24 does not have a reclining function, the backrest frame 29 can be tilted to a rearward inclined position during normal operation (see FIG. 4) and a forward inclined position during rotation (see FIG. 5). It is. For details of this tilting mechanism, refer to Japanese Patent Application No. 5-277497 and drawings by the present applicant.

In the seat apparatus of the second embodiment constructed as described above, when changing the seating direction of the seat 1, first, the backrest 24 is returned from the rearwardly inclined position to the forwardly inclined position. The part 23 is rotated by the motor mechanism 27 or manually. When the seat 23 rotates, the largest radius portion 30 passes through the concave portion 31 of the armrest 25 without contact. Therefore, the armrest 25 is provided at a position close to the center axis 26 side of the seat portion 23 by the depth of the concave portion 31, and the installation space of the seat 21 in the vehicle width direction can be reduced.

Further, since the maximum radius portion 30 of the seat portion 23 is cut off obliquely, the maximum rotation radius of the seat portion 23 is reduced, and the armrest 25 is provided at a position closer to the center shaft 26 side. It is possible. In addition, the armrest 25 is
, The gap between both sides can be reduced, the danger of pinching the hand can be avoided, and there is no risk of being misused as a trash can.

The present invention is not limited to the above embodiment, but can be embodied by changing the shape and configuration of each part as exemplified below. (1) In the seat device of the first embodiment, the recess 11 is formed in a rectangular shape, a cylindrical surface shape, or the like. (2) In the seat device of the first embodiment, the concave portion 11 and the thigh receiving portion 12 are formed only in the center seat cushion 3b, and the front edges of the seat cushions 3a and 3c on both sides are formed linearly.

(3) In the seat device of the first embodiment,
The recess is formed on both the front edge and the rear edge of the central seat cushion 3b or only on the rear edge. (4) In the seat device of the second embodiment, the recess 31 is formed in a rectangular shape, a spherical shape, a shape like the recess 11 of the first embodiment, or the like. (5) In the seat device of the second embodiment, the armrests 25 are provided on both sides of the base 22, and the recesses 31 are formed on the inner surface of each armrest 25.

(6) In the seat device of the second embodiment,
A recess similar to that of the first embodiment is formed at the front edge of the seat 23. (7) The seat apparatus of the first and second embodiments is applied to a two-seat seat. (8) Applying the seat device of the first and second embodiments to other vehicle seats such as buses and passenger ships.

[0024]

As described above in detail, according to the first aspect of the present invention, there is an excellent effect that the pitch between seats can be reduced and the installation space in the row direction of seats can be reduced.

According to the second aspect of the present invention, in addition to the above-described effects, the thigh receiving portion can comfortably support both occupants' thighs.

According to the third aspect of the present invention, the armrest is provided at a position close to the center of rotation of the seat portion, and an excellent effect that the installation space in the width direction of the seat can be reduced is achieved.

Further, according to the invention of claim 4, the effect of reducing the installation space in the row direction of the seats or the effect of reducing the installation space in the width direction of the seats can be increased. .

[Brief description of the drawings]

FIG. 1 is a plan view of a seat device for a railway vehicle, showing a first embodiment of the present invention.

FIG. 2 is a front view of a seat in the seat device.

FIG. 3 is a plan view showing a seat cushion of a seat portion of the seat.

FIG. 4 is a plan view of a seat device for a railway vehicle showing a second embodiment of the present invention.

FIG. 5 is a plan view showing a state where the seat device is rotating.

FIG. 6 is a front view of a seat in the seat device.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a plan view showing a conventional railway vehicle seat device.

FIG. 9 is a plan view showing another conventional railway vehicle seat device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 seat 2 base 3 seat 11 concave portion 12 thigh receiving portion 13 maximum radius portion 21 seat 22 base 23 seat portion 25 armrest 30 maximum radius portion 31 concave portion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60N 2/14 B61D 33/00

Claims (4)

(57) [Claims] 1. A vehicle seat apparatus comprising: a plurality of seats arranged in a row on a floor of a vehicle, wherein each seat includes a base and a seat rotatable with respect to the base. A concave portion formed in a front edge of the seat so that a maximum radius portion of a seat portion of an adjacent seat passes without contact when rotating. 2. The seat according to claim 1, wherein the recess is formed at the center of the front edge of the seat, and left and right portions of the front edge of the seat are thigh receiving portions that can receive both thighs of a seated person. 2. The vehicle seat device according to claim 1. 3. A vehicle in which a plurality of seats are arranged in a row on a floor surface of a vehicle and each seat includes a base, a seat rotatable with respect to the base, and an armrest fixed to the base. A seat device for a vehicle, wherein a concave portion is formed on an inner side surface of the armrest so that a maximum radius portion of the seat portion passes through in a non-contact manner during rotation. 4. The vehicle seat device according to claim 1, wherein a maximum radius portion of the seat portion is cut off obliquely.