JP6190190B2 - Vehicle seat device - Google Patents

Description

  The present invention relates to a vehicular seat apparatus such as a railway, and more particularly to a vehicular seat apparatus that can rotate with respect to a floor surface of the vehicle.

  For example, a seat device that is rotatably installed on a floor surface of a railway vehicle is known. This type of seating device is typically a two-seat or three-seat seat arranged in the front-rear direction of the vehicle so as to face the traveling direction of the vehicle or to face the seats in the rear row. It is possible to change the direction by 180 degrees. The arrangement interval of the seats is set larger than, for example, the minimum turning radius of the seats so as not to interfere with the front row seats or the rear row seats when the seats are rotated.

  On the other hand, in recent years, from the viewpoint of securing more transport personnel, there is a demand for a reduction in the seat arrangement interval. For example, Patent Document 1 below discloses a seat device in which a concave portion through which the maximum radius portion of the front row of seat portions passes without contact during rotation is formed at the front edge of the seat portion.

Japanese Patent No. 3195149

  However, in the seat device described in Patent Literature 1, the depth of the seating surface is partially reduced by the recess formed in the front edge of the seating part, which may reduce the seating comfort.

  In view of the circumstances as described above, an object of the present invention is to provide a seat device capable of narrowing the seat arrangement interval without reducing the sitting comfort.

In order to achieve the above object, a seat device according to an embodiment of the present invention includes a seat body and a side armrest.
The seat body has a seat portion and a backrest portion. The seat is configured so that a plurality of persons can be seated. The said backrest part is installed in the said seat part. The seat body is rotatably attached to the floor surface of the vehicle.
The said side armrest has a rest part, a base part, and a connection part. The rest portion extends in the front-rear direction of the seat portion. The base portion is fixed to a side portion of the seat body and has an outer surface curved inward from the rest portion. The connecting portion connects the rest portion and the base portion. The side armrest is made of a metal part in which the rest portion, the base portion, and the connecting portion are integrally formed.

1 is an overall perspective view showing a seat device according to an embodiment of the present invention. It is a front view of the one side armrest in the said seat apparatus. It is a rear view of the said side armrest. It is a right view of the said side armrest. It is a left view of the said side armrest. It is a top view of the said side armrest. It is a bottom view of the said side armrest. It is a perspective view of the said side armrest. It is a principal part enlarged view of FIG. It is a top view explaining operation | movement of the said seat apparatus. It is a side view which shows a mode when two mutually adjacent seat apparatus approaches most.

A seat device according to an embodiment of the present invention includes a seat body and a side armrest.
The seat body has a seat portion and a backrest portion. The seat is configured so that a plurality of persons can be seated. The said backrest part is installed in the said seat part. The seat body is rotatably attached to the floor surface of the vehicle.
The said side armrest has a rest part, a base part, and a connection part. The rest portion extends in the front-rear direction of the seat portion. The base portion is fixed to a side portion of the seat body and has an outer surface curved inward from the rest portion. The connecting portion connects the rest portion and the base portion. The side armrest is made of a metal part in which the rest portion, the base portion, and the connecting portion are integrally formed.

  In the seat device, the base portion of the side armrest is closest to the rear row seat when the seat body rotates. Since the base part has an outer peripheral surface that is curved inward (seat body side) from the rest part, the seat body can be rotated without forming a recess at the front edge of the seat part in the rear row. Thereby, since the depth of a seat surface can be ensured, it becomes possible to narrow the arrangement | sequence space | interval of a seat, without reducing seating comfort.

  Further, in the seat device, the side armrest is composed of a metal part in which the rest portion, the base portion, and the connecting portion are integrally formed with each other, so that a decrease in strength due to the curvature of the outer surface of the base portion can be prevented. it can.

The base part includes, for example, a first coupling part coupled to the seat part and a second coupling part coupled to the backrest part. The connection portion may include a first wall portion that protrudes toward the side portion of the seat body and extends in the front-rear direction of the base portion.
With the first wall portion, the strength of the connecting portion can be improved.

The connecting portion may further include a second wall portion that connects the first wall portion and the second coupling portion to each other.
The strength of the connecting portion is further improved by the second wall portion, and the rigidity of the side armrest can be increased.

The base portion may further include a peripheral wall portion that is formed on a peripheral edge of the base portion and is formed continuously with the first wall portion.
The strength of the base portion can be improved by the peripheral wall portion.

The peripheral wall portion may be formed lower on the rear side than on the front side of the base portion.
As a result, when the seat body is rotated, a larger clearance can be secured between the base portion and the front row or rear row seat portion.

  The side armrest is attached to at least one side portion of the seat body, and is typically attached to both side portions of the seat body.

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

  FIG. 1 is an overall perspective view showing a seat device according to an embodiment of the present invention. In the figure, an X axis and a Y axis indicate horizontal directions orthogonal to each other, and a Z axis indicates a height direction. Hereinafter, the configuration of the seat device 1 will be described.

  The seat device 1 includes a seat body 10 and side armrests 21 and 22. The seat device 1 of the present embodiment is configured by a three-seat seat for a railway vehicle (for example, a Shinkansen), and typically, a plurality of rows are provided on both sides in the vehicle in the longitudinal direction (X-axis direction) of the vehicle. Has been.

[Sheet body]
The seat body 10 includes a seat portion 11 on which a plurality of persons can sit, and a backrest portion 12 installed on the seat portion 11, and is rotatably attached to the floor surface of the vehicle.

  The seat portion 11 includes a plurality (three in this example) of seat cushions 11a, 11b, and 11c and a base frame 110 that supports the seat cushions 11a to 11c (in the drawing, the seat cushion 11c is a virtual line). Indicated). The seat cushions 11a to 11c are arranged along a direction (Y-axis direction) orthogonal to the traveling direction (X-axis direction) of the vehicle. In the illustrated example, the seat cushion 11a is on the window side, and the seat cushion 11c is on the passage side. Respectively. In the following description, “front” indicates the + X direction, and “rear” indicates the −X direction.

  The underframe 110 is composed of a frame body having a rear shaft 111 and a front shaft 112 that are parallel to the Y-axis direction, a connecting frame 113 that connects them, and the like. A rotation mechanism R (see FIG. 10) that can rotate around the Z-axis is installed on the floor of the vehicle substantially at the center of the underframe 110.

  Side armrests 21 and 22, which will be described later, are respectively attached to the side portions of the seat cushions 11a and 11c located on the outside (window side and passage side). An armrest (armrest) 20 is also installed between the outer seat cushions 11a and 11c and the central seat cushion 11b (see FIGS. 10 and 11), but these are not shown in FIG.

  The backrest 12 includes backrests 12a, 12b, and 12c, and back frames 120a, 120b, and 120c that support the backrests 12a to 12c (in the figure, the backrest 12c and the back frame 120c are imaginary lines). Indicated). The backrests 12a to 12c and the back frames 120a to 120c are installed for each of the seat cushions 11a to 11c, and the back frames 120a to 120c have a rotation shaft S for reclining (see FIG. 9).

[Side armrest]
The side armrest 21 is attached to the side portion on the window side of the seat cushion 11a, and the side armrest 22 is attached to the side portion on the passage side of the seat cushion 11c. Since both side armrests 21 and 22 have the same configuration except that they have a mirror-symmetrical form, only one side armrest 22 will be described here.

  2 to 8 show the configuration of the side armrest 22. FIG. 2 is a front view, FIG. 3 is a rear view, FIG. 4 is a right side view, FIG. 5 is a left side view, FIG. Is a bottom view, FIG. 8 is a perspective view, and FIG. 9 is an enlarged view of a main part of FIG.

  The side armrest 22 includes a rest portion 31, a base portion 32, and a connecting portion 33. The side armrest 22 is composed of a metal part in which a rest portion 31, a base portion 32, and a connecting portion 33 are integrally formed with each other.

(Rest part)
The rest portion 31 is formed in a substantially columnar shape extending in the front-rear direction (X-axis direction) of the seat portion 11, and has a front end portion 311 that is a free end and a rear end portion 312 that is a fixed end. An operation member 41 (see FIG. 1) for performing a reclining operation of the backrest 12a and the back frame 120a is installed at the front end portion 311 of the rest portion 31. The rear end portion 312 of the rest portion 32 is connected to the connecting portion 33.

  An opening 313 is formed on the upper surface of the rest 31 from the front end 311 to the rear end 312. In the recess in the opening 313, a transmission member (not shown) for transmitting the reclining operation input to the operating member 41 to the reclining mechanism of the back frame 120c is installed. A synthetic resin cover member 42 (see FIG. 1) is attached to the upper surface of the rest portion 31 so as to cover both sides of the opening 313 and the front end portion 311 side.

(Base part)
The base portion 32 is fixed to the side portion of the seat body 10. The base portion 32 is formed in a substantially plate shape, and an inner side surface 32a fixed to the side portions of the base frame 110 and the back frame 120c, and an outer side surface curved inward (the seat body 10 side) from the rest portion 31. 32b.

  As shown in FIGS. 2 and 3, the base portion 32 is curved in a substantially S shape or a crank shape from the rest portion 31 side toward the inside of the base portion 32 (the seat body 10 side). The outer side surface 32b has a flat surface portion F substantially parallel to the Z axis from its substantially central portion to its bottom portion. The flat surface portion F is formed so as to be inclined further toward the inner side (the seat body 10 side) from the front side to the rear side of the base portion 32. As a result, the amount of depression of the outer surface 32b from the virtual surface p passing through the center of the rest portion 31 and parallel to the Z axis increases linearly from d1 on the front side of the base portion 32 to d2 on the rear side of the base portion 32 ( (See FIG. 7).

  The size of the recesses d1 and d2 is not particularly limited, and is formed to an appropriate size that does not contact the seat portion of the rear row seat device when the seat device 1 rotates. Further, the shape of the flat surface portion F that forms the dents d1 and d2 is not limited to a flat surface, and can be set as appropriate according to the relative positional relationship with the seat portion of the seat device in the rear row. May be formed.

  Various structures are formed on the inner side surface 32 a of the base portion 32. For example, the inner side surface 32a of the base portion 32 is provided with first, second, and third connection holes 321, 322, and 323 coupled to the frame 110 (see FIG. 5). The first and second connection holes 321 and 322 constitute a first coupling part coupled to the seat part 11, and the third connection hole 323 constitutes a second coupling part coupled to the backrest part 12. Configure.

  The side surface shape of the base portion 32 viewed from the Y-axis direction is formed in a substantially trapezoidal shape in which the length dimension along the X-axis direction gradually increases toward the bottom portion. The first and second connection holes 321 and 322 are constituted by bottomed boss portions arranged in the vicinity of the bottom portion of the base portion 32 along the X-axis direction. The first connection hole 321 is coupled to the distal end portion of the rear shaft 111 of the underframe 110. The second connection holes 322 are provided at two locations on the inner side surface 32a, and thread grooves are formed on the inner peripheral surfaces of the second connection holes 322, respectively. The second connection holes 322 are fixed to the connection frame 113 via fasteners B such as bolts (FIG. 1). reference).

  The third connection hole 323 is configured by a boss portion having a bottomed connection hole provided between the central portion of the inner side surface 32 a of the base portion 32 and the connecting portion 33. The third connection hole 323 is coupled to the distal end portion of the reclining rotation shaft S of the back frame 120c so as to be rotatable.

  The base portion 32 further includes a peripheral wall portion 324 and a rib portion 325 as the structure provided on the inner side surface 32a. The peripheral wall portion 324 and the rib portion 325 are formed for the purpose of increasing the rigidity of the base portion 32.

  The peripheral wall portion 324 is formed along the periphery of the base portion 32. In the present embodiment, the peripheral wall portion 324 is formed so as to protrude from the peripheral edge of the base portion 32 to the inner side surface 32b side (sheet main body 10 side). The peripheral wall portion 324 does not have to be formed over the entire periphery of the base portion 32, and may be partially formed along the periphery.

  The peripheral wall portion 324 is formed with different heights for each region so that the protruding end surface forms a plane parallel to the XZ plane over the entire peripheral wall portion. Therefore, as shown in FIGS. 2 and 3, the height of the peripheral wall portion 324 continuously changes so that the height h2 on the rear side is lower than the height h1 on the front side of the base portion 32.

  The rib portion 325 is linearly formed along the X-axis direction between the first and second connection holes 321 and 322 and the third connection hole 323. Both ends of the rib portion 325 are connected to the peripheral wall portion 324. The rib portion 325 is formed with a height lower than that of the peripheral wall portion 324, but is not limited thereto, and may be formed with a height equal to or higher than the height of the peripheral wall portion 324.

(Connecting part)
The connecting portion 33 connects the rear end portion 312 of the rest portion 31 and the base portion 32 to each other. The boundary part between the connecting part 33 and the rest part 31 and the boundary part between the connecting part 33 and the base part 32 are not necessarily clear. That is, the connecting portion 33 may include a partial region of the rear end portion 312 of the rest portion 31 or may include a partial region of the upper end of the base portion 32.

  The connecting portion 33 connects the rest portion 31 to the base portion 32 in a cantilever structure. Therefore, various stresses (bending stress, shearing stress, torsional stress, etc.) according to the form of the load applied to the rest portion 31 act on the connecting portion 33. In order to suppress the deformation of the connecting portion 33 due to the action of such stress, the connecting portion 33 has a reinforcing structure including a first wall portion 331 and a second wall portion 332.

  The first wall portion 331 is formed so as to protrude from the connecting portion 33 toward the side portion of the seat body 10 and extend in the front-rear direction (X-axis direction) of the base portion 32 from the rear side to the front side of the base portion 32. (FIG. 5).

  The first wall portion 331 is continuously connected to the peripheral wall portion 324. The boundary portion between the first wall portion 331 and the peripheral wall portion 324 is not necessarily clear. The first wall portion 331 is formed at the same height as the peripheral wall portion 324 on the front side of the base portion 32 (FIG. 2). On the other hand, on the rear side of the base portion 32, the first wall portion 331 is formed lower than the peripheral wall portion 324 (FIG. 3).

  As shown in FIG. 5, the second wall portion 332 connects the first wall portion 331 and the third connection hole 323 (second coupling portion) to each other. The second wall portion 332 is configured by a linear rib extending obliquely rearward from the first wall portion 331 toward the third connection hole 323. The height of the 2nd wall part 332 is not specifically limited, For example, it forms in the height below the 1st wall part 331, for example.

[Operation of seat device]
Next, a typical operation of the seat device 1 of the present embodiment configured as described above will be described.

  FIG. 10A is a plan view for explaining the operation of the seat device 1. A plurality (three in this example) of seat devices 1A to 1C are arranged in a row with the traveling direction D1 of the vehicle facing the front direction. Each of the seat devices 1A to 1C has the same configuration as the seat device 1 described above. A rotation mechanism R is installed immediately below the central seat cushion 11b of each seat apparatus 1A to 1C, and each seat apparatus 1A to 1C is configured to be capable of rotating 180 degrees around the Z axis. . FIG. 10B is a plan view showing a state when the central seat apparatus 1B is converted 180 degrees counterclockwise.

  In the present embodiment, the side armrests 21 and 22 having the above-described configuration are attached to both sides of the seat device 1 (1A to 1C), respectively. In the example of FIG. 10B, when the seat device 1B rotates, the side armrest 22 attached to the seat cushion 11c comes closest to the seat cushion 11b of the rear row seat device 1C.

  FIG. 11 is a side view showing a state when the seat device 1B is closest to the seat device 1C. As shown in the drawing, since the base portion 32 of the side armrest 22 located at the maximum turning radius portion of the seat device 1B has an outer surface 32b curved inwardly, the rest portion 31 passes directly above the rear row seat cushion 11b. However, the outer side surface 32b and the seat cushion 11b are not in contact with each other and the seat body 10 can be rotated.

  Therefore, according to the present embodiment, the seat body 10 can be rotated without forming a recess for avoiding contact with the side armrest at the front edge of the seat cushion 11b of the seat device 1C in the rear row. Thereby, since the depth of the seat cushion 11b can be ensured, it is possible to reduce the arrangement interval of the seats without reducing the sitting comfort.

  Further, according to the present embodiment, the side armrests 21 and 22 are formed of metal parts in which the rest portion 31, the base portion 32, and the connecting portion 33 are integrally formed with each other. The reduction in strength due to the bending of the base portion 32 can be prevented while being planned.

  In particular, since the torsional rigidity of the base portion 32 is enhanced by the peripheral wall portion 324 provided on the peripheral edge of the base portion 32, the deformation of the base portion 32 can be prevented. Further, since the height of the peripheral wall portion 324 is formed lower on the rear side than on the front side of the base portion 32, the rear end of the base portion that first comes closest to the rear row seat portion when the seat device rotates is the seat. It is possible to avoid contact with the part.

  Furthermore, since the side armrests 21 and 22 have the first wall portion 331 and the second wall portion 332, the strength of the connecting portion 33 can be improved or the rigidity can be increased. The deformation and destruction of the armrests 21 and 22 can be prevented.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

  For example, in the above-described embodiment, the seat device for three seats has been described as an example. However, the present invention is not limited to this, and the seat device for two seats may be configured.

  Further, in the above embodiment, the side arm rest having a cantilever structure in which the rear end portion of the rest portion 31 is fixed to the base portion 32 has been described as an example, but instead, both end portions of the rest portion are the base portions. The present invention can also be applied to a side armrest having a double-supported beam structure fixed to a portion.

DESCRIPTION OF SYMBOLS 1,1A, 1B, 1C ... Seat apparatus 10 ... Seat main body 11 ... Seat part 12 ... Backrest part 21, 22 ... Side armrest 31 ... Rest part 32 ... Base part 32b ... Outer surface 33 ... Connection part 321,322,323 ... Connection hole 324 ... Peripheral wall 331 ... First wall 332 ... Second wall

Claims (5)

A seat body that can be seated by a plurality of people, and a backrest portion that is installed on the seat, and is rotatably attached to the floor of the vehicle;
A rest portion extending in the front-rear direction of the seat portion, a base portion having an outer surface that is fixed to a side portion of the seat body and curved inward from the rest portion, and a connection that connects the rest portion and the base portion A side arm rest made of a metal part in which the rest portion, the base portion, and the connecting portion are integrally formed with each other ,
The base portion further includes a peripheral wall portion that is formed at a peripheral edge of the base portion and protrudes toward a side portion of the seat body,
The outer side surface has a flat surface portion inclined toward the side portion of the seat body from the front side to the rear side of the base portion,
The vehicle seat device in which the height of the peripheral wall portion continuously changes so that the rear side is lower than the front side of the base portion . The vehicle seat device according to claim 1,
The base portion includes a first coupling portion coupled to the seat portion, and a second coupling portion coupled to the backrest portion,
The said connection part has a 1st wall part which protrudes toward the side part of the said seat body, and extends in the front-back direction of the said base part. Vehicle seat apparatus. The vehicle seat device according to claim 2 ,
The connecting portion further includes a second wall portion that connects the first wall portion and the second coupling portion to each other. The vehicle seat device according to claim 2 or 3,
The said surrounding wall part is continuously formed with the said 1st wall part. The vehicle seat apparatus. The vehicle seat device according to any one of claims 1 to 4 ,
The side armrest is attached to both side portions of the seat body.

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