JP3575850B2 - Stool - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a seat provided with a footrest device for a rear occupant.
[0002]
[Prior art]
Providing a footrest device for a rear occupant on a stool arranged on a railroad vehicle, a car, a ship, or the like so that the occupant on the rear stool can take a comfortable position. Is well known in the art.
[0003]
FIG. 7 is a schematic view showing a conventional example of a stool arranged in a passenger compartment of a railway vehicle. A stool 1A shown here includes a footrest 3A immovably supported on a floor 2A of the passenger compartment, and the footrest 3A. 3A, a frame 4A supported by the frame 4A, a seat cushion 5A and a seat back 6A supported by the frame 4A, and a footrest device 7A used by a rear occupant. An armrest 8A is fixed to the side. In the passenger compartment of a railway vehicle, many such stools are arranged in the front-rear direction of the vehicle, and FIG. 7 shows stools 9A and 10A arranged in front and behind the above-described stool 1A. I have. The seat cushion 5A of the stool 1A supports the buttocks of a seated person (not shown) seated thereon, and the seat back 6A supports the back of the seated person. The armrest 8A is for the seated person to place his elbow.
[0004]
The footrest device 7A shown in FIG. 7 has a base member 11A fixed to the footrest 3A, and a footrest member 12A pivotally attached to the free end side, and the footrest member 12A is shown by a solid line. It is rotatable between a use position and a storage position indicated by a chain line. When the occupant P1 of the rear stool 10A uses the foot rest device 7A, the foot rest member 12A is brought to the use position shown by the solid line, and the foot is placed thereon. When the foot rest device 7A is not used, the foot rest member 12A is stored in the storage position indicated by the dashed line so that it does not obstruct the occupant P1.
[0005]
Here, the stool of the railway vehicle is rotatably supported on the footrest 3A so that the occupant always faces forward regardless of the traveling direction of the vehicle. That is, the underframe 4A of the stool 1A is rotatably supported on a plane substantially parallel to the upper surface of the floor 2A to which the footrest 3A is fixed in an angle range of at least 180 ° by the footrest 3A. The same applies to the stools 9A and 10A.
[0006]
FIG. 7 shows the first orientation of each stool when the railway vehicle advances in the direction indicated by arrow P. When the railway vehicle advances in the direction of arrow Q as shown in FIG. The underframe 4A of each stool is rotated by 180 ° together with the seat cushion 5A and the seat back 6A supported thereby, and each stool is set in the second direction shown in FIG.
[0007]
Here, when the stool 1A occupies the first orientation shown in FIG. 7, the occupant P1 of the stool 10A located behind the stool 1A uses the footrest device 7A of the stool 1A. However, when the stool 1A occupies the second direction shown in FIG. 8, the stool 9A located in front of the stool 9A in the state of FIG. 7 occupies the rear position. Therefore, at this time, it is necessary to provide the stool 1A with the footrest device 7B for the occupant P2 of the stool 9A located behind the stool 1A. As described above, two footrests 7A and 7B each having a base member and a footrest member must be provided on the footrest 3A of one stool 1A, but this avoids the disadvantage of increasing the cost of the stool. Absent.
[0008]
When the height of the seating member P1 using the footrest device 7A shown in FIG. 7 is short, if the length of the footrest member 12A is short, the legs of the seated person may not reach the footrest member 12A. is there. In order to prevent such a problem, the length of the footrest member 12A may be set to be large as shown by a broken line in FIG. However, according to this configuration, when the foot rest member 12A is rotated to the storage position as shown by the dotted line, the foot rest member 12A protrudes above the footrest 3A. Even when the frame 4A is to be rotated as described above, the rear portion of the frame 4A, for example, a rear cover (not shown) of the frame 4A interferes with the footrest member 12A indicated by a dotted line, and rotates the frame 4A. You will not be able to do it. For this reason, the length of the foot rest member 12A cannot be set to be too large, and as a result, the occupant P1 with a short height may not be able to put his feet on the foot rest member 12A.
[0009]
In addition, it is conceivable to form the base member 11A of the foot rest apparatus long so that the feet of the short height seated person can be reached. However, in this case, the base member of the unused foot rest apparatus is not used. There is a risk of hitting the heel. For example, if the base member indicated by reference numeral 111A in FIG. 7 is lengthened, the heel of the occupant P1 hits the base member 111A, causing the occupant to feel uncomfortable. For this reason, the base member cannot be formed too long, and a low-height occupant may not be able to place a foot on the footrest member.
[0010]
In order to eliminate the above-mentioned various inconveniences, as shown in FIG. 9, the pivot arm 11C is pivotally supported so as to be able to swing up and down toward the frame 4A instead of the leg stand 3A of the seat 1A. A footrest device 7C has been proposed in which a footrest member 12C is supported on the free end side of the rotating arm 11C. When using the footrest device 7C, the rotating arm 11C and the footrest member 12C are brought to the position shown by the solid line in FIG. 9, and the occupant P1 behind the seat 1A is placed on the footrest member 12C. Put your feet on. When the foot rest device 7C is not used, the pivot arm 11C and the foot rest member 12C are flipped up to the storage position indicated by the dashed line in FIG. At this time, the foot rest member 12C and the rotating arm 11C both occupy positions above the footrest 3A.
[0011]
According to the above-described configuration, when the underframe 4A is rotated by 180 ° together with the seat back 6A and the seat cushion 5A, and these are set in the second direction shown in FIG. 10, the rotating arm 11C of the footrest device 7C is Since it is supported by the underframe 4A, the foot rest 7C rotates together with the underframe 4A. Accordingly, when the stool 1A occupies the second orientation shown in FIG. 10, the footrest device 7C faces the stool 9A located rearward at this time. Therefore, the occupant P2 of the rear seat 9A at this time can use the same footrest device 7C. In other words, if one stool 1C is provided on the stool 1A, the occupant of the stool located behind the same stool 1C can use the same stool 7C regardless of the orientation of the stool 1A. You can. Therefore, it is sufficient to provide only one footrest device 7C for one stool 1A, and the cost of the stool can be reliably reduced.
[0012]
Moreover, the rotating arm 11C of the foot rest device 7C is supported by the underframe 4A, and when the foot rest device 7C is not used, the turning arm 11C and the foot rest member 12C are retracted above the footrest 3A. Therefore, even if the footrest member 12C is formed long, the rotating arm 11C and the footrest member 12C do not interfere with the footrest 3A when the underframe 4A rotates, and the underframe 4A can be rotated without hindrance. . In addition, when the foot rest device 7C is not used, it is possible to avoid a problem that the rotating arm 11C hits the heel of the seated person. As described above, since the foot rest member 12C is formed to be long and can be greatly extended to the side of the occupant behind, the occupant having a short height can surely put his foot on the foot rest member 12C.
[0013]
As described above, the seat shown in FIGS. 9 and 10 can eliminate the disadvantages of the seat shown in FIGS. 7 and 8. However, in the stool 1A shown in FIG. 9 and FIG. 10, since the rotating arm 11C of the footrest device 7C is supported by the underframe 4A of the stool 1A, the occupant P1 or P2 behind the stool 1C rests. When an impact force is applied to the foot placing member 12C by, for example, vigorously placing a foot on the member 12C, this is transmitted directly to the underframe 4A. Therefore, the impact is directly transmitted to the seated person (not shown) of the seat 1A via the seat cushion 5A, and the seated person is greatly discomforted.
[0014]
Because of the disadvantages of the stool shown in FIGS. 9 and 10, conventionally, a stool of the type shown in FIGS. 7 and 8 is generally used. However, according to this, the various disadvantages described above are unavoidable.
[0015]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION An object of the present invention is to provide a seat that solves the above-mentioned various disadvantages of the related art at once.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a footrest fixedly supported on a floor, and a plane substantially parallel to the upper surface of the floor to which the footrest is fixed, which is rotatable in an angle range of at least 180 °. A frame supported by a base, a seat cushion supported by the frame, a seat back supported by the frame, and a footrest device used by a rear occupant; The seat cushion and the seat back are set in one of a first orientation and a second orientation obtained by rotating a plane substantially parallel to the floor surface by substantially 180 ° with respect to the first orientation. In the stool to be used, the footrest device supports the footrest member for the rear occupant and the footrest member on the free end side, and the footrest member retreats upward from the footrest. Storage position and the storage position below the storage position. A rotatable arm pivotally supported between an upper position and a lower position is provided at a rear portion of the underframe so that the underframe can be moved between use positions. When the seat back is set to the first orientation or set to the second orientation and the foot rest is brought to the use position, the pivot arm is immovably moved with respect to the footrest. First and second locking devices for locking are provided on the footrest, respectively, and when the turning arm is brought to an upper position, the turning arm also occupies a position above the footrest. A seat is proposed in which the range of the rotation angle of the rotation arm is set.
[0017]
At this time, when each of the lock devices brings the rotation arm to the lower position, the lock device engages with an engagement portion attached to the rotation arm to stop the rotation arm at the lower position. In addition, when the rotating arm is to be brought to the upper position, it has a lock portion that is disengaged from the engaging portion, and when the rotating arm is brought to the lower position, A stopper for abutting the side of the footrest to stop the rotating arm at a position below the footrest, and when the lock part and the engagement part are engaged with each other, the engagement position is set to the rotation with respect to the footrest. When the stopper occupies a position lower than the pivot portion of the moving arm and the stopper portion abuts on the side of the footrest, the abutment position is a position lower than the engagement position between the lock portion and the engagement portion. Occupy the position of the pivot of the pivot arm and the pivot arm. And arrangement position of the engaging portion and the stopper portion which is advantageously a position of the locking portion set respectively.
[0018]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0019]
FIGS. 1 and 2 are side views schematically showing a stool 1 according to an embodiment of the present invention, and FIG. 3 is a perspective view of the stool 1 as viewed obliquely from behind. As shown in these figures, a stool 1 is arranged in a passenger compartment of a railway vehicle, and a base 3 fixedly supported on a floor 2 of the passenger compartment and a base supported on the base 3 A frame 4, a seat cushion 5 removably supported on the underframe 4, a seat back 6 also supported at the rear of the underframe 4 so as to be tiltable, and used by a rear occupant P1 or P2. An armrest 8 is fixed to the side of the underframe 4. In the present embodiment, a lower portion of a seat back frame (not shown) constituting the skeleton of the seat back 6 is pivotally attached to a frame pipe at the rear of the frame 4. The seat back 6 supports the back of the seated person (not shown) of the seat 1, the seat cushion 5 supports the buttocks of the seated person, and the armrest 8 supports the elbow of the seated person.
[0020]
The underframe 4 is supported on the footrest 3 so as to be rotatable in a plane substantially parallel to the upper surface of the floor to which the footrest 3 is fixed in an angle range of at least 180 °. Thus, when the railway vehicle moves forward in the direction indicated by arrow P in FIG. 1 (in this example, this is the first direction), the stool 1 occupies the forward direction shown in FIG. 2 moves forward in the direction indicated by the arrow Q in FIG. 2 (this is also referred to as the second direction), the stool 1 can occupy the forward direction shown in FIG. In the example shown in FIGS. 1 and 2, the rotation center pin 14 protruding from the underframe 4 is rotatably fitted into the hole 15 provided in the leg base 3, whereby the underframe 4 is It is rotatably supported with respect to. The stools 9, 10 located before and after the stool 1 are configured in exactly the same manner.
[0021]
As described above, the stool 1 moves the underframe 4, the seat cushion 5, and the seatback 6 in the first direction and a plane substantially parallel to the floor surface with respect to the first direction by approximately 180 degrees. It is used by being set in any one of the rotated second directions.
[0022]
Here, first, the schematic configuration of the footrest device 7 will be clarified. As shown in FIG. 1, FIG. 3, FIG. 4, and FIG. It has a rotating arm 11. The foot rest member 12 is rotatably supported on a free end side of the pair of pivot arms 11 via a pair of concentric pivot pins 40. The foot rest member 12 is shown in FIGS. 4 can be rotated between the protruding position shown by the solid line and the folding position shown by the broken line. When the foot rest member 12 is brought to the projecting position, it hits a stopper (not shown) attached to the rotating arm 11 and the foot rest member 12 is held at that position. Also, when the foot rest member 12 is brought to the folded position, the foot rest member 12 hits the stopper 16 protruding from the rotating arm 11 and is held at the folded position.
[0023]
The rotating arm 11 is pivotally supported on a rear portion of the underframe 4, in this example, on the underframe pipe 13 in a manner described later in detail. That is, the storage position where the foot rest member 12 is retracted above the footrest 3 as shown by a dashed line in FIGS. 1, 3 and 4, and the storage position as shown by a solid line or a broken line in these figures. The rotating arm 11 is pivotally supported by the rear portion of the underframe 4 so as to be able to move between the use position below the position. The rotating arm 11 is pivotally supported by the rear of the underframe 4 so as to be rotatable between a lower position indicated by a solid line in FIGS. 1, 3 and 4 and an upper position indicated by a dashed line. When the moving arm 11 occupies the lower position, the footrest member 12 is brought to the use position, and when the rotating arm 11 rotates to the upper position, the footrest member 12 is stored in the storage position. At that time, when the rotating arm 11 is brought to the upper position shown by the dashed line, not only the footrest member 12 housed in the storage position, but also the rotating arm 11 above the footrest 3. The rotation angle range of the rotation arm 11 is set so as to occupy the position.
[0024]
When the rotating arm 11 is rotated between the upper position and the lower position as described above, the foot rest member 12 may occupy the protruding position or the folding position. 1, 3, and 4 indicate a state in which the turning arm 11 is turned to the upper position in a state where the foot rest member 12 is brought to the folding position, and the foot rest member 12 is stored in the storage position. Is shown.
[0025]
In the seat 1, the underframe 4, the seat cushion 5, and the seat back 6 are set in the first orientation shown in FIG. 1 or in the second orientation shown in FIG. A first lock device 17 and a second lock for locking the rotating arm 11 to the footrest 3 when the rotating arm 11 is lowered to the lower position to bring the foot rest member 12 to the use position. A device 117 is provided on each of the footrests 3. The specific configuration and operation of these lock devices will be described in detail later. The lock devices 17 and 117 are provided on one side and the other side of the footrest 3 in the front-back direction of the stool 1 which is also the front-back direction of the railway vehicle. They are arranged symmetrically.
[0026]
Here, when the stool 1 is set in the first direction shown in FIG. 1 and the occupant P1 of the stool 10 located behind the stool 1 uses the footrest device 7 of the stool 1, the stool 1 is rotated. The arm 11 is rotated to the lower position shown by the solid line, and the footrest member 12 is brought to the use position shown by the solid line or the broken line. At this time, the rotating arm 11 is immovably locked to the footrest 3 by the first lock device 17 provided on the footrest 3. In this state, the rear occupant P1 can rest his foot on the foot rest member 12 and take a comfortable posture. At this time, when the height of the seated person P1 is small, the foot rest member 12 is brought to the projecting position indicated by the solid line, and the foot rest member 12 is arranged near the seated person P1. When the occupant P1 having a large height uses the footrest device 7, the occupant pivots the device to the folded position shown by the broken line and arranges it at a position away from the occupant P1. As described above, the footrest member 12 of the present embodiment is used at any one of the use position of the protruding position shown by the solid line in FIGS. 1, 3, and 4, and the folding position shown by the broken line.
[0027]
When the foot rest device 7 is not used, the turning arm 11 is turned to the upper position shown by a dashed line in FIGS. 1, 3 and 4, and the foot rest member 12 is stored. Thus, the foot rest member 12 and the rotating arm 11 do not obstruct the occupant P1.
[0028]
When changing the direction of the stool 1, the rotating arm 11 is flipped up to the upper position to store the foot rest member 12, and in this state, the underframe 4 is moved together with the seat cushion 5 and the seat back 6 against the surface of the floor 2. 180 ° on a substantially parallel plane. Thereby, the underframe 4, the seat cushion 5, and the seat back 6 can be rotated in the second direction shown in FIG. At this time, since the rotating arm 11 is supported by the underframe 4, when the underframe 4 rotates, the rotating arm 11 and the foot rest member 12 also rotate together with the underframe 4, and the seat 1 is shown in FIG. When the footrest device 7 is set in the second orientation, the footrest device 7 is located opposite to the stool 9 located behind the stool 1 at this time. Therefore, the occupant P2 of the seat 9 at the rear can use the footrest device 7 in exactly the same manner as described above. During use, the rotating arm 11 is immovably locked to the footrest 3 by the second locking device 117 provided on the opposite side of the above-described first locking device 17 provided on the footrest 3. As described above, the stool 1 is provided with the two lock devices 17 and 117 attached to the footrest 3, and the same applies to the other stools 9 and 10.
[0029]
By rotating the underframe 4 again in the first orientation shown in FIG. 1 in exactly the manner described above, the footrest device 7 is used by the occupant P1 behind it.
[0030]
When the underframe 4 is rotated as described above, both the footrest member 12 and the rotating arm 11 occupy positions higher than the footrest 3, so that they do not interfere with the footrest 3, and there is no problem. The underframe 4 can be rotated without the need.
[0031]
According to the above-described configuration, when the stool 1 is set in any of the first and second directions shown in FIG. 1 or FIG. Since each of the stools 10 and 9 faces the occupant, the occupant of each of the stools 10 and 9 can be used. Not only that, when the foot rest device 7 is not used, the foot rest member 12 and the rotating arm 11 can be retracted above the footrest 3. At the time of rotation of 4, the footrest member 12 does not interfere with the footrest 3, and it is possible to prevent the heel of the occupant from hitting the footrest member 12 in a non-use state. By thus forming the footrest member 12 to be long and projecting it to the rear side of the occupant, the feet of the short-height occupant can reach the footrest member 12 sufficiently. In particular, in this example, since the footrest member 12 is supported by the rotating arm 11 so as to be rotatable between the protruding position and the folded position, the above-described effect can be further ensured. In this manner, even with the stool 1 of this example, the same advantages as those of the stool shown in FIGS. 9 and 10 can be obtained, and the disadvantages of the conventional stool shown in FIGS. 7 and 8 can be eliminated. .
[0032]
Moreover, when the footrest device 7 is used, the pivot arm 11 is immovably locked to the footrest 3 by the first or second locking device 17 or 117, so that the seating behind the seat 1 can be seated. When the person P1 or P2 vigorously places his or her feet on the foot rest member 12, the impact force is received by the footrest 3 and absorbed here, and the impact is applied to the seated person (not shown) of the seat 1. It is possible to suppress direct transmission, and it is possible to eliminate a problem that causes the occupant to feel uncomfortable.
[0033]
As described above, according to the stool 1 of this example, all the drawbacks of the conventional stool shown in FIGS. 7 to 10 can be eliminated.
[0034]
Next, a more specific configuration example of the footrest device 7 described above will be described with reference to FIGS.
[0035]
As shown in FIGS. 3 to 5, the underframe pipe 13 at the rear of the underframe 4 extends in the lateral direction of the stool 1, and an inverted U-shaped support member 18 is fixed to the pipe 13, and each longitudinal direction thereof is A bracket 19 is integrally fixed to each end region. A tubular member 42 is fixed to these brackets 19, and a support shaft 20 extending in the lateral direction of the seat 1 penetrates both brackets 19 and the tubular member 42, and the support shaft 20 is fixed to both brackets 19. . Further, each end of the support shaft 20 in the longitudinal direction is fitted to the cylindrical portion 11a integrally fixed to the base end of the left and right rotation arm 11 positioned parallel to each other, and formed on each rotation arm 11. Screws 41 are inserted into the through holes thus formed, and the screws 41 are screwed into screw holes 20 a formed on each end surface of the support shaft 20. Each rotating arm 11 is rotatable with respect to the screw 41. In this manner, the rotating arm 11 is pivotally supported by the rear portion of the underframe 4 so as to be rotatable. As described above, the foot rest member 12 is pivotally supported on the free end side of the pivot arm 11 via the pivot pin 40.
[0036]
In each end region of the support shaft 20, a coil portion of a torsion coil spring 21 which is an example of a rotating arm urging means is wound around each of the cylindrical portions 11a. One end is locked to the bracket 19 and the other end is locked to the rotating arm 11, respectively. As a result, the rotating arm 11 is urged toward the upper position shown by the alternate long and short dash line in FIGS. In this way, when the foot rest device 7 is not used, the rotating arm 11 is lifted to a position above the foot rest device 7, and the foot rest member 12 is stored in the storage position. At this time, the rotating arm 11 comes into contact with a stopper (not shown) provided on the underframe 4 side, and the rotating arm 11 stops immovably at the upper position. Reference numeral 37 in FIGS. 3 and 4 denotes a rear cover of the underframe 4 that covers the underframe pipe 13.
[0037]
A lock pin 32, which is an example of an engaging portion, and a stop pin 35, which is an example of a stopper portion, are arranged between the two rotating arms 11, and each end of the pins 32, 35 is connected to each of the rotating arms 11. Fixed to.
[0038]
On the other hand, the first lock device 17 has a case 22 fixed to the footrest 3 as shown in FIG. 6, and a cutout 23 is formed in a case part opposite to the footrest 3, Moreover, the lower part of the case 22 is open. A support shaft 24 extending in the lateral direction of the stool 1 and rotatably supported on both side walls of the case 22 is disposed inside the case 22, and an upper portion of a restriction link 25 is fixed to the support shaft 24. ing. The restriction link 25 can swing together with the support shaft 24 in the front-rear direction of the stool 1 as shown by an arrow A. The regulation link 25 has a lower portion protruding outside the case from a lower opening of the case 22, and one end of a connecting rod 26 extending in the lateral direction of the seat 1 is fixed to the lower portion.
[0039]
As shown in FIGS. 3 and 6, a pedal support member 27 is fixed to the leg base 3, and an upper portion of a pedal 29 for stepping and jumping up is pivotally attached to the support member 27 via a pin 28. . The pedal 29 can swing about the pin 28 in the front-rear direction of the stool 1 as shown by an arrow B or C, but is usually attached to the position shown in FIG. Is stopped at this position. The other end of the connecting rod 26 is fixed to a lower portion of the pedal 29.
[0040]
As shown in FIGS. 4 and 6, a pair of lock pieces 30, which are examples of lock parts, are fixed to the support shaft 24, and each end of a tension spring 31 is provided between the restriction link 25 and the case 22. 4 and 6 by the action of the spring 31, the regulating link 25 is rotated and urged in the counterclockwise direction in FIGS. Stops at the indicated position. As described above, the lock device 17 has the lock portion including the lock portion piece 30, and the operation thereof will be described later.
[0041]
In addition, one end of a wire 38, which is an example of a transmission member, is connected to the restriction link 25, and the wire 38 extends inside the footrest 3.
[0042]
The above is the configuration of the first lock device 17, but the other second lock device 117 has the same structure as that of the first lock device 17 except that it is symmetrical. Omitted. The other ends of the wires 38 of the lock devices 17 and 117 are connected to a stool rotation pedal 39 (FIG. 3) that is swingably supported by the footrest 3, as will be described later. Activated.
[0043]
Here, in order for the occupant P1 shown in FIG. 1 to use the footrest device 7, the rotating arm 11 at the upper position shown by the dashed line in FIGS. When the lock pin 32, which is integrally connected to the rotation arm 11 and extends in the lateral direction of the stool 1, is rotated integrally with the rotation arm 11 to the lower position shown by the solid line in FIG. Then, it enters into the notch 23 formed in the case 22 of the first lock device 17 and hits the tip surface 33 (FIG. 4) of the lock piece 30 and pushes it. When the lock piece 30 is not pressed by the lock pin 32, the distal end surface 33 is a tapered surface that is inclined as shown in FIG. 4. Therefore, the distal end surface 33 is pressed by the lock pin 32. Then, the lock piece 30 rotates slightly clockwise in FIG. 4 together with the support shaft 24 against the action of the tension spring 31 (FIG. 6). When the lock pin 32 climbs over the distal end surface 33 of the lock piece 30, the lock piece 30 pivots again to the position shown in FIG. The lock groove 34 is engaged with the lock groove 30. This engaged state is maintained by the tension spring 31, the pivot arm 11 is locked in the lower position shown by the solid line in FIGS. 1, 3 and 4, and the footrest member 12 occupies its use position. Thereby, the seated person P1 (FIG. 1) holds the foot rest member 12 at the protruding position shown by the solid line or the folded position shown by the broken line in FIGS. 1, 3, and 4, and puts the foot on this. Can be.
[0044]
As described above, when the rotation arm 11 is brought to the lower position, the lock portion including the lock piece 30 engages with the engagement portion including the lock pin 32 attached to the rotation arm 11, The rotating arm 11 is stopped at the lower position.
[0045]
Further, when the rotating arm 11 is brought to the lower position, a stopper portion formed of a stop pin 35 attached to the rotating arm 11 comes into contact with the footrest 3 to stop the rotating arm 11 at the lower position. Let it. In the present example, when the rotating arm 11 is rotated to the lower position, the stop pin 35 fixed thereto hits the elastic member 36 made of a rubber sheet or the like fixed to the front wall surface of the case 22 of the lock device 17. The rotating arm 11 is stopped at the lower position. As described above, in this example, when the rotating arm 11 is rotated to the lower position, the stop pin 35 comes into contact with the case 22 via the elastic member 36, so that the impact at this time is reduced and a large impact sound is generated. Can be prevented. An elastic member may be provided on the stop pin 35 so as to suppress the generation of an impact sound. In this embodiment, the stop pin 35 is brought into contact with the case 22 to stop the rotary arm 11 at the lower position. However, the stop pin 35 may be attached to the footrest 3 or an elastic member fixed thereto. The pivot pin 11 may be stopped at the lower position by bringing the stop pin 35 into contact with the side of the footrest 3.
[0046]
As described above, the rotating arm 11 is stopped at the lower position by the engagement of the lock pin 32 and the lock piece 30 and the contact of the stop pin 35 with the case 22, and the lock pin 32 and the lock piece 30 Is locked in its lower position. At this time, as apparent from FIG. 4, when the lock portion including the lock portion piece 30 and the engagement portion including the lock pin 32 engage with each other, the engagement position is set to the rotation with respect to the footrest 3. It occupies a position below the pivot of the moving arm 11, that is, the position of the central axis of the screw 41. Similarly, when the stopper portion including the stop pin 35 contacts the leg base 3, that is, the elastic member 36 of the case 22, the contact position is lower than the engagement position between the lock piece 30 and the lock pin 32. Occupy the position. In order to obtain such relationships, the position of the pivotal support of the rotating arm 11, that is, the screw 41, the positions of the lock pin 32 and the stop pin 35 with respect to the rotating arm 11, and the position of the lock piece 30 Are set respectively.
[0047]
As described above, when the pivot arm 11 pivots to the lower position, the pivot arm 11 is locked to the footrest 3 by the lock device 17, whereby the vibration applied to the foot rest member 12 is However, in this example, the effect can be further enhanced by the above-described configuration.
[0048]
That is, when the turning arm 11 is locked at the lower position as shown in FIG. 4 and an impact external force F is applied to the footrest member 12 from above, for example, the turning arm 11 4 is about to rotate in the clockwise direction in FIG. 4 around the stop pin 35 abutting on the case 22 via the elastic member 36. If the rotating arm 11 actually rotates slightly in this direction, the pivotal support of the rotating arm 11, that is, the screw 41, slightly rotates clockwise in FIG. As a result, the impact force is transmitted to the underframe 4, which gives the occupant of the seat 1 uncomfortable feeling. However, in the configuration shown in FIG. 4, when an external force F is applied to rotate the rotation arm 11 clockwise about the stop pin 35, the height between the stop pin 35 and the screw 41 is increased. Since the lock piece 30 and the lock pin 32 at the position are engaged with each other, the rotation of the rotating arm 11 is prevented. For this reason, the impact force is not transmitted to the underframe 4, and it is possible to reliably prevent the inconvenience that gives the occupant a discomfort.
[0049]
Next, when the footrest member 12 is stored in the upper storage position, the occupant P1 steps on the footrest 29 for stepping up and lifting the footrest, and pushes it on the front of the seat 1 against the action of the spring. Side, that is, in the direction indicated by arrow B in FIG. As a result, the regulating link 25 connected to the pedal 29 via the connecting rod 26 rotates forward, that is, in the direction of arrow D, against the action of the tension spring 31. Accordingly, the lock piece 30 rotates together with the support shaft 24 in the same arrow D direction, and the engagement between the lock piece 30 and the lock pin 32 is released. For this reason, the rotating arm 11 is rotated upward together with the foot rest member 12 by the action of the torsion coil spring 21 shown in FIG. 5, and is flipped up to the upper position shown by the dashed line, and the foot rest member 12 is retracted. In position. As described above, when the turning arm 11 is to be brought to the upper position, the engagement between the lock piece 30 and the lock pin 32 is released, and the turning arm 11 can turn to the upper position without any trouble.
[0050]
When the stool 1 is set in the second orientation shown in FIG. 2, the footrest device 7 and the second locking device 117 operate in exactly the same manner as described above.
[0051]
By the way, the underframe 4 supported on the footrest 3 and the seat cushion 5 and the seatback 6 supported by the underframe 4 are set at the first or second position shown in FIG. 1 or FIG. At this time, the underframe 4 is locked to the footrest 3 by a lock (not shown), and is held so as not to rotate from each position. When rotating the underframe 4, the seat cushion 5, and the seat back 6, the above-mentioned seating rotary pedal 39 shown in FIG. 3 is depressed with a foot, and this is rotated downward. Then, the above-mentioned lock is released, and the underframe 4 is freely rotatable with respect to the leg base 3, so that the underframe 4 is rotated together with the seat cushion 5 and the seat back 6 in the direction of FIG. 1 or FIG. be able to. After the rotation is completed, the above-described lock is applied, and the underframe 4, the seat cushion 5, and the seat back 6 are immovably held at the predetermined positions.
[0052]
The above configuration itself is no different from the conventional stool. Here, when the underframe 4 is rotated with respect to the footrest 3 as described above, the rotating arm 11 occupies the lower position shown by the solid line in FIGS. 1, 3 and 4, and the footrest member 12 is in the use position. If they remain, they will interfere with the footrest 3 when the underframe 4 rotates. Therefore, at the time of the rotation operation of the underframe 4, it is necessary to flip up the rotating arm 11 and the footrest member 12 to the position shown by the dashed line, but the occupant forgets to perform this operation and rotates the underframe 4. There is a possibility that it will be done.
[0053]
Therefore, in this example, as described above, the other end of the wire 38 of the first lock device 17 is connected to the sitting rotary pedal 39, and the pedal 39 is depressed to rotate the underframe 4. Then, the wire 38 is pulled, and the restriction link 25 rotates in the arrow D direction. Therefore, even if the rotating arm 11 is at the lower position and the foot rest member 12 occupies the use position at this time, the engagement between the lock piece 30 and the lock pin 32 is released. And the foot rest member 12 are jumped up to the upper position and the storage position, respectively. As described above, the rotation arm 11 and the foot rest member 12 are retracted upward in conjunction with the operation of the seat rotation pedal 39, so that there is no possibility that these will interfere with the footrest 3 when the underframe 4 rotates. The other second locking device 117 operates in exactly the same way.
[0054]
Although the embodiment relating to the stool of a railway vehicle has been described above, the present invention can be widely applied to a stool of an automobile, a ship, and the like.
[0055]
【The invention's effect】
According to the configuration of the first aspect, the turning arm of the foot rest device is supported by the underframe, and the turning arm and the foot rest member supported by the turning arm are stored in a position above the footrest. Therefore, only one footrest device needs to be provided on the seat, and the footrest device does not interfere with the footrest when the underframe rotates. Further, when the foot rest is brought to the use position, the rotating arm supporting the foot rest is locked to the footrest by the lock device. It is not transmitted directly to the seated person, and it is possible to prevent a problem that causes the seated person to feel uncomfortable.
[0056]
According to the configuration of the second aspect, when an impact force is applied to the footrest in a state where the rotating arm is locked at the lower position, the rotating arm is centered on the stopper portion attached thereto. Attempts to rotate, but the rotation is prevented by the locking portion and the engaging portion engaged with each other, so that it is possible to more reliably prevent the impact force from being transmitted to the underframe, and to discomfort the seated occupant. Can be more effectively removed.
[Brief description of the drawings]
FIG. 1 is a side view showing a seat according to an embodiment of the present invention.
FIG. 2 is a side view showing a state where the underframe of the stool shown in FIG. 1 is rotated by 180 °.
FIG. 3 is a perspective view of the stool when viewed from diagonally backward.
FIG. 4 is a partial cross-sectional side view showing a configuration of a foot rest device and a lock device, omitting a seat back and a seat cushion, and showing only a part of an underframe;
FIG. 5 is an exploded perspective view of the footrest device.
FIG. 6 is an exploded perspective view showing some components of the lock device.
FIG. 7 is a side view showing an example of a conventional stool.
8 is a side view showing a state where the underframe of the stool shown in FIG. 7 is rotated by 180 °.
FIG. 9 is a side view showing another conventional example of a seat.
FIG. 10 is a side view showing a state where the underframe of the stool shown in FIG. 9 is rotated by 180 °.
[Explanation of symbols]
1 perched
2 floors
3 footrest
4 frame
5 Seat cushion
6 seat back
7 Footrest device
11 Rotating arm
12 Foot rest
17 First locking device
117 Second lock device
P1 seated person
P2 seated person

Claims (2)

A footrest fixedly supported by the floor, an underframe rotatably supported by the footrest in a plane substantially parallel to the upper surface of the floor to which the footrest is fixed, in an angle range of at least 180 °; A seat cushion supported by an underframe, a seatback supported by the underframe, and a footrest device used by a rear occupant; In the stool used by setting the orientation and a second orientation obtained by rotating a plane substantially parallel to the floor surface by approximately 180 ° with respect to the first orientation,
The footrest device supports a footrest member for a rear occupant, a free end side of the footrest member, and a storage position where the footrest member is retracted above the footrest and the storage position. A pivot arm rotatably supported at a rear portion of the underframe so as to be rotatable between an upper position and a lower position so that the underframe can be moved between lower and upper use positions; When the footrest is brought to the use position with the seat cushion and the seatback set in the first orientation or in the second orientation, the pivot arm is moved to the footrest. When the first and second locking devices are fixed to the leg base respectively, and the rotating arm is brought to the upper position, the rotating arm also occupies a position higher than the leg base. As described above, the rotation angle range of the rotation arm is set. Sitting characterized the door. Each of the lock devices, when bringing the rotating arm to the lower position, engages with an engaging portion attached to the rotating arm, stops the rotating arm at the lower position, and rotates the rotating arm. When the moving arm is to be brought to the upper position, it has a lock portion that is disengaged from the engaging portion, and the turning arm has a footrest when the turning arm is brought to the lower position. A stopper portion is provided to stop the rotating arm at a position below the rotating arm by contacting the locking portion and the engaging portion. The stopper occupies a position lower than the pivot portion, and when the stopper abuts on the side of the footrest, the contact position occupies a position lower than the engagement position between the lock portion and the engagement portion. , The position of the pivot portion of the pivot arm and the engagement with the pivot arm. Parts and the arrangement position of the stopper portion, seat according to the position of the locking portion to Claim 1 which is set respectively.

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