JP2963211B2 - Rotating sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating seat comprising a leg provided on a floor and a seat rotatably provided with respect to the leg. Rotating sheet.

2. Description of the Related Art In recent years, in a railway vehicle, if a seat is a seat (so-called cross seat) provided in a direction orthogonal to the traveling direction of the vehicle, a passenger is required to sit in the traveling station at a starting station. Prior to loading passengers, there has been provided a device for rotating seats in a passenger compartment at once. The power of such a rotating seat is high-pressure air. The source of the high-pressure air is a large centralized compressor provided under the floor for supplying the high-pressure air to a vehicle brake mechanism, a door opening and closing mechanism, and the like. Therefore, air piping from the compressor under the floor to each seat is required.

However, when an existing vehicle provided with a non-rotatable seat is remodeled into a collectively revolving seat, there is a problem that a large-scale remodeling work such as air piping from under the floor is required. is there. The present invention has been made in view of the above problems, and an object of the present invention is to provide a rotating sheet that does not require extensive remodeling work.

According to the present invention, there is provided a rotating seat comprising a leg provided on a floor and a seat rotatably provided with respect to the leg. A shaft having a first sprocket attached to a tip end thereof, the bearing being provided on a top surface of the leg, and rotatably supporting an intermediate portion of the shaft. A compressor provided on the leg, a rotary actuator provided on the leg, driven by the compressor, and having a second sprocket mounted on an output shaft;
And a chain wound around the second sprocket.

In the rotary seat of the present invention, when the compressor is driven, the rotary actuator is driven, and the second
Sprocket rotates. The rotation of the second sprocket is transmitted to the first sprocket via a chain, and the shaft rotates. By the rotation of this shaft,
A seat portion rotatably provided with respect to the leg portion rotates.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view for explaining an embodiment of the present invention, FIG. 2 is a plan view when a seat cushion in FIG. 1 is removed, and FIG. 3 is a diagram for explaining operation. First, in FIGS. 1 and 2, a leg 2 is provided on a floor 1. A seat 3 on which three passengers can sit on the leg 2
Are arranged. The seat portion 3 includes three seat cushions 4, a seat back 5 attached to each of the seat cushions 4 so as to be reclined in the front-rear direction, and armrests 6 provided on both sides of each of the seat cushions 4. It is configured. The reclining mechanism includes an urging portion (a spring or a gas spring is widely used) for urging the seatback 5 in the normal position direction, and a lock mechanism for locking the seatback 5 at a predetermined reclining angle position. It is composed of
A bearing 7 is disposed substantially at the center of the top surface of the frame 10 of the leg 2. On the other hand, a shaft 8 that protrudes into the leg 2, and that is rotatably supported by a bearing 7 is provided upright at an intermediate portion on the bottom surface of the seat 3. A first sprocket 9 is attached to the tip of the shaft 8. Further, a compressor 11 and a rotary actuator 12 driven by the compressor 10 are attached to the frame 10 of the leg 2. In the structure of the rotary actuator 12, a rack is connected to a piston that reciprocates in a cylinder, and the rack meshes with a pinion provided on an output shaft. Then, the output shaft performs a rotary motion by linearly moving the piston in the cylinder by high-pressure air. A second sprocket 13 is attached to the tip of the output shaft of the rotary actuator 12. A chain 14 is wound around the first sprocket 9 and the second sprocket 13. The rotary actuator 12 and the compressor 11 are connected by an air pipe, but a first electromagnetic valve (two-way switching valve) 15 is provided at an intermediate portion, and the rotation direction of the output shaft of the rotary actuator 12 can be arbitrarily switched. It is possible. The frame 10 on the passage side of the leg 2 is provided with a lock mechanism for inhibiting rotation of the seat 3. This locking mechanism is provided on both sides of the bottom surface of the frame 17 of the seat portion 3 with the pins 16 provided on the top surface of the frame 10 of the leg portion 2 so as to be movable in the vertical direction. And holes 18 and 19 formed in the hole. Further, a lever 20 is provided on the frame 10 of the leg 2. One rotating end of the lever 20 is attached to a lower end of the pin 16, and an intermediate portion is attached to the frame 10 so as to be rotatable. Further, the lever 20 is rotationally urged by urging means (not shown) in a direction in which the pin 16 is engaged with the hole 18 or 19. The other rotating end of the lever 20 is provided with a pedal portion 20a, and the pedal portion 20a is stepped downward against the urging force of the urging means to thereby prevent the seat portion 3 from rotating. Are unlocked. The frame 10 of the leg 2 is provided with an air cylinder 21. The spindle of the air cylinder 21 is attached to the pedal portion 20a of the lever 20. The air cylinder 21 and the compressor 11 are connected by an air pipe, and a second solenoid valve (two-way switching valve) 22 is provided at an intermediate portion to arbitrarily switch the moving direction of the spindle of the air cylinder 21. It can be changed. The cylinder of the rotary actuator 12 is provided with magnetic sensors 23 and 24 that respond to the case where the piston is at the top dead center and bottom dead center and detect the position of the piston. 25 is a magnetic sensor 2
It is a control unit that takes in signals 3 and 24 and drives the first electromagnetic valve 15 and the second electromagnetic valve 22. Next, the operation of the above configuration will be described. When all seats are rotated collectively When a switch provided in the driver's cab or the like is turned on, the control unit 2
Reference numeral 5 determines whether or not the sheet is in the traveling direction based on the signals from the magnetic sensors 23 and 24. When it is necessary to rotate the seat, the first and second electromagnetic valves 1
Activate 5,22. First, when the second electromagnetic valve 22 operates, the pedal portion 20a of the lever 20 is pushed down, and the lock mechanism that inhibits the rotation of the seat portion 3 is unlocked. Next, when the first electromagnetic valve 15 is operated, the rotary actuator 12 is driven, and the second
Sprocket 13 rotates. The rotation of the second sprocket 13 is transmitted to the first sprocket 9 via the chain 14, and the seat 3 rotates 180 °. When the 180 ° rotation of the seat section 3 is completed, the control section returns to 25
Operates the second electromagnetic valve 22, raises the pin 16, and locks the seat portion 3. In the case where the installation pitch between the sheets is small and all the sheets are simultaneously rotated and interfere with each other, as shown in FIG. 3, the sheets in the even rows and the odd rows are separately rotated. For example, it is preferable to first rotate the odd rows of sheets (solid arrows), and then rotate the even rows of sheets (broken arrows). When Manually Rotating When the passenger manually rotates the seat, the passenger steps on the pedal portion 20a of the lever 20. Then, the lock mechanism that inhibits the rotation of the seat 3 is unlocked, and the passenger can manually rotate the seat 3. By providing a seat rotation mechanism and its power source on each seat as in the above configuration, even when remodeling an existing vehicle provided with a non-rotatable seat into a rotary seat, air piping from under the floor, etc. Extensive remodeling work is not required, which can contribute to shortening the construction period and increasing the operating rate of vehicles.

As described above, according to the present invention, by providing the seat rotation mechanism and its power source in the leg of the seat, it is possible to realize a rotary seat that does not require extensive remodeling work.

[Brief description of the drawings]

FIG. 1 is a front view illustrating an embodiment of the present invention.

FIG. 2 is a plan view when a seat cushion in FIG. 1 is removed.

FIG. 3 is a diagram for explaining the operation in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor 2 Leg part 3 Seat part 7 Bearing 8 Shaft 9 1st sprocket 11 Compressor 12 Rotary actuator 13 2nd sprocket 14 Chain

Claims (1)

(57) [Claims] 1. A leg (2) provided on a floor (1).
And a seat portion (3) rotatably provided with respect to the leg portion (2). The rotating seat is provided upright on the bottom surface of the seat portion (3), and is provided in the leg portion (2). Protruding,
A shaft (8) having a first sprocket (9) attached to a tip end thereof; and a bearing (7) provided on a top surface of the leg (2) and rotatably supporting an intermediate portion of the shaft (8). ), A compressor (11) provided on the leg (2), and a second sprocket (13) provided on the leg (2) and driven by the compressor (11). An attached rotary actuator (12) and the first and second sprockets (9,
And a chain (14) wound around 13).