JPH08216749A - Seat for rolling stock - Google Patents

Abstract

PURPOSE: To provide a seat for rolling stock that can cut off adverse effect on a driving motor at the manual turning time with simple constitution when a seat body is supported in a turnable state on a support base through a turning disc driven by a motor. CONSTITUTION: A turning disc is constituted of a sliding support plate 14 fixed to a support base 11, a motor connecting disc 15 slidably supported on the sliding support plate 14 and rotatively driven being connected to a driving motor 20 fixed to the support base 11, and a fixed disc 17 disposed on the motor connecting disc 15 through a sliding disc 16 with the low sliding resistance face and fixed to a seat body 10. Sliding resistance between the sliding support plate 14 and the motor connecting disc 15 is set to be larger than sliding resistnce between the motor connecting disc 15 and the fixed disc 17 so as to prevent the rotation of the motor connecting disc 15 at the manual turning time of the seat body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat for a railway vehicle which is rotatably installed on a floor of a passenger compartment suitable for use in, for example, a railway vehicle.

[0002]

2. Description of the Related Art Railway vehicle seats employ a directional rotation structure that allows the seating direction of the seat to be arbitrarily selected in accordance with the traveling direction of the train or the preference and requirements of the seated person. .

That is, the most common direction-changing type railway vehicle seat of this type is that the seat back is erected on a U-shaped supporting pedestal provided on the floor under the seat cushion. A supporting swing arm is pivotally supported, the swing arm is swung, and the seat back is positioned in front of and behind the seat on the seat cushion so that the seating direction to the seat can be arbitrarily changed. It is composed. However, with such a structure, a reclining function such as adjusting the tilt angle of the seat back cannot be obtained.

For this reason, a reclining mechanism is attached to the seat body to vertically incline the seat back to the rear end side of the seat cushion and to support the U-shaped support fixed to the lower part of the seat cushion and the installation floor surface. There is also known a direction-changing type railway vehicle seat that is provided with a turntable that is rotationally driven by an AC electric motor via a reduction mechanism between the base and the seat. And according to such a railroad vehicle seat,
By adjusting the tilt angle of the seat back and exhibiting the required reclining function, by rotating the drive motor, the direction of the seat body is automatically reversed, and the seating direction in the seat is automatically set to a fixed direction. It was something that could be aligned.

[0005]

By the way, in the conventional direction-changing type railway vehicle seat as described above, since the turntable is rotated by the drive motor, the seats are automatically aligned in a certain direction at the terminal station or the like. Although it is possible to rotate the turntable according to the preference of the seated person, it is necessary to manually rotate the turntable. However, since the speed reduction mechanism is interposed between the drive motor and the turntable, the speed reduction mechanism becomes a load when the seat body is manually turned, and the manual turning of the seat body becomes heavy. At the same time, the drive motor is rotated at high speed in response to the manual turning of the seat body, and there is an unsolved problem that a counter electromotive force is generated and the motor drive circuit is adversely affected.

In order to solve this unsolved problem, it is conceivable to insert a clutch mechanism such as an electromagnetic clutch between the rotary shaft of the drive motor and the reduction mechanism, but the number of parts of this clutch mechanism increases. And increase the manufacturing cost,
A control means for controlling the clutch mechanism is also required, and there is a new problem that the structure becomes complicated and the overall cost increases.

The present invention has been made in view of the above circumstances, and is for a railway vehicle in which a seat body can be easily manually swung without adversely affecting a drive motor without providing a clutch mechanism. The purpose is to get a seat.

[0008]

In order to meet such a demand, a railway vehicle seat according to a first aspect of the invention is driven by a drive motor and a manual drive on a support table arranged on the floor surface of a passenger compartment. In a seat for a railway vehicle in which a seat body is rotatably installed via a rotating disc, the rotating disc is slidable on the sliding support plate fixed to the support base. At least a motor coupling disc disposed and coupled to a drive motor, and a fixed disc fixed to the seat body slidably disposed on the motor coupling disc, the sliding The sliding resistance between the support plate and the motor connecting disk is set to be larger than the friction resistance between the motor connecting disk and the fixed disk.

Further, in the railway vehicle seat according to a second aspect of the present invention, in the invention of the first aspect, a sliding disc having a small sliding resistance is interposed between the motor coupling disc and the fixed disc. Is characterized by. Further, a railroad vehicle seat according to a third aspect is characterized in that, in the invention of the first aspect, a low sliding resistance surface is formed on at least one of the motor coupling disc and the fixed disc. .

[0010]

According to the first aspect of the present invention, when the drive motor is fixed to, for example, the support base, and the motor connecting disc is rotated by the drive motor via the reduction mechanism, the drive motor is mounted on the motor connecting disc. The fixed disc, which is fixed to the seat body that is placed, rotates integrally and the seat body is inverted. On the other hand, when the seat body is manually rotated with the drive motor stopped rotating, the friction resistance between the motor connecting disc and the fixed disc is greater than the friction resistance between the motor connecting disc and the sliding support plate. Since the number is small, it is possible to prevent the motor coupling disc from rotating by causing a slip between the motor coupling disc and the fixed disc, and the turning force of the seat body is manually transmitted to the drive motor through the reduction mechanism. Never.

Further, when the drive motor is fixed to the seat body side, the seat body is allowed to rotate between the motor coupling disc and the fixed disc fixed to the seat body, and the seat body is manually moved. When the seat body is rotated, slippage occurs between the motor coupling disc and the sliding support plate to allow the seat body to rotate.

Further, according to the invention of claim 2, since the sliding disk is interposed between the motor connecting disk and the fixed disk, when the sliding disk is worn due to long-term use, this All you have to do is replace the sliding disc. Further, according to the invention of claim 3, since the low sliding resistance surface is formed on at least one of the motor connecting disk and the fixed disk, sliding between the motor connecting disk and the fixed disk is achieved. It is not necessary to provide a disc, and the number of parts can be reduced to simplify the process.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A railroad vehicle seat according to the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show an embodiment of a turning type railway vehicle seat according to the present invention,
In these drawings, the reference numeral 1 as a whole is a bench seat type turning type seat used in a rail vehicle. As is apparent from FIG. 1, the direction-changing seat 1 has at least a seat cushion 2 and left and right seat backs 3, 3 which are erected on the rear end side thereof, and a seat installation floor surface 4 of a railway vehicle. It is placed on top of it.

Further, in the drawing, reference numerals 5 and 5 designate a seat body 1 including the above-mentioned seat cushion 2 and seat backs 3 and 3.
As shown in FIG. 1, the armrests provided on the left and right sides of 0 are configured as members having a substantially U-shape.

Here, in FIG. 1, reference numeral 6 is a wall surface of a passenger compartment of a railway vehicle or the like, and 7 is a window portion of a train or the like. The direction-changing vehicle seat 1 has a well-known structure as a bench seat, but its detailed description will be omitted.

According to the present invention, the direction change type vehicle seat 1 as described above is a rectangular parallelepiped having an open upper end disposed on the installation floor surface 4, as is apparent from FIGS. 1 and 2. A box-shaped support base 11 and a seat cushion 2 and seat backs 3 and 3 arranged on the box-shaped support base 11. A seat body 10 having a reclining mechanism (not shown) is rotatably supported. And a rotation adjusting mechanism 13 as a rotating disk.

Further, the box-shaped support base 11 includes front and rear plate portions 11a and 11b arranged at a predetermined interval in the vehicle front-rear direction and left and right plate portions for connecting left and right end portions of the front and rear plate portions 11a and 11b. 11c and 11d, front and rear plate portion 11
Sliding support frames 1 formed on seat cushion frames 15 to be described later on the left and right ends of the upper ends of a and 11b, respectively.
Sliders 11e and 11f with which 5e and 15f are in sliding contact are formed, and a support frame 11g for supporting the rotation adjusting mechanism 13 at a predetermined center portion in the left-right direction,
11h is bridged. Further, the right side plate portion 11d on the aisle side
Is a lock pin 12a for restricting rotation of the seat body 10.
Release the lock pedal to release the lock.
Is rotatably arranged. The lock pin 12a is not only lowered by the lock release pedal 12 but also electrically lowered by an actuator (not shown) formed of a plunger having an electromagnetic solenoid to release the lock. Further, instead of the box-shaped support base 11, a support base can be formed by using a leg part of one leg and a base plate fixed to the upper end of the leg part.

The rotation adjusting mechanism 13 is, as shown in FIGS. 2 and 3, a support frame 11 of the box-shaped support base 11.
a metal sliding support plate 14 formed in a dish shape by a disk portion 14c having a central opening 14b fixed to the g and 11h by a bolt 14a and a ring-shaped flange 14d formed on the outer peripheral surface of the upper surface thereof. A metal composed of a dish-shaped portion 15b having a central opening 15a that engages with the sliding support plate 14 and a flange portion 15d having a gear portion 15c formed on the outer peripheral surface extending outward from the outer peripheral surface thereof. Made of a motor-made circular disc 15 and a sliding circular disc 16 having a low friction resistance surface made of, for example, nylon and having a central opening 16a in a dish-shaped portion 15b of the motor-shaped circular disc 15. The metal fixed disc 17 fixed to the seat body 10 and having the central opening 17a, and the sliding support plate 14, the motor coupling disc 15, the sliding disc 16 and the fixed disc 17 are Stacked in order Their center openings 14b, 15a,
Center support bolt 18B inserted into 16a and 17a
And the nut 18 screwed to the center support bolt 18B.
N and.

Here, grease is applied to the sliding contact surfaces of the sliding support plate 14 and the motor connecting disk 15 and the sliding contact surfaces of the motor connecting disk 15 and the sliding disk 16, respectively, and the sliding contact surfaces are slid. The sliding resistance between the dynamic support plate 14 and the motor connecting disk 15 is set to be larger than the sliding resistance between the motor connecting disk 15 and the fixed disk 17. Therefore, between the motor coupling disc 15 and the fixed disc 17, when the seat body 10 is manually swung, slippage occurs and the swivel is allowed.
On the contrary, when the motor connecting disc 15 is rotated, the seat body 10 is integrally rotated without slippage.

A pinion gear 19 is meshed with a gear portion 15c formed on the outer peripheral surface of the motor coupling disc 15 of the rotation adjusting mechanism 13, and the pinion gear 19 is fixed to the box-shaped support 11 and has a speed reducing mechanism built therein. Drive motor 20
The output shaft 20a is connected, and the drive motor 20 is driven to rotate in the forward and reverse directions, whereby the motor connecting disk 15 is rotated in the clockwise and counterclockwise directions.

As shown in FIG. 2, the seat body 10 has a seat cushion frame 21 and left and right seat back frames 22, 22 rotatably supported by the seat cushion frame 21. The seat cushion frame 21 has a rectangular frame shape including front and rear frames 21a and 21b arranged at a predetermined distance in the front and rear direction of the vehicle and left and right frames 21c and 21d connecting left and right ends of the front and rear frames 21a and 21b. And the U-shaped sliding support frames 21e, 21f that project downward between the left and right symmetric end portions of the front and rear frames 21a, 21b, and have their bottom surfaces slidably contacting the sliders 11e, 11f of the box-shaped support base 11. While being bridged, support frames 21g and 21h are formed at the center portions of the front and rear frames 21a and 21b in the left-right direction at predetermined intervals. A fitting hole 21 into which the lock pin 12a of the box-shaped support stand 11 fits in the center of the sliding support frames 21e and 21f in the front-rear direction.
i is formed, and the supporting frames 21g, 21
The fixed disk 17 of the rotation adjusting mechanism 13 is fixed to the h by bolts 23.

Although not shown, the actuator and the electric motor 20 are provided with an actuator for releasing the locked state of the reclining mechanism described above.
When automatic alignment work is performed at a terminal station or the like, each seat in the vehicle compartment is automatically aligned in one direction by being drive-controlled by a controller (not shown).

Next, the operation of the above embodiment will be described. now,
It is assumed that the seat 1 faces the front, which is the traveling direction of the vehicle, as shown in FIG. When manually reversing the seat body 10 in this state, first, the lock release pedal 1
2 is depressed to lock the lock pin 12a into the fitting holes 2 of the sliding support frames 21e and 21f of the seat cushion frame 21.
The seat body 1 in a state where the seat body 1 is disengaged from the fitted state with 1i.
0 is rotated clockwise or counterclockwise when viewed from above, and then the release of the lock release pedal 12 is released,
The lock pin 12a is rotated until it is fitted into the fitting hole 21i on the opposite side.

As described above, when the seat body 10 is manually swung, the sliding resistance between the sliding support plate 14 and the motor connecting disk 15 on the box-shaped support base 11 side of the rotation adjusting mechanism 13 is reduced by the seat body 10 side. Since the sliding resistance between the motor connecting disc 15 and the fixed disc 17 is set to be large, the fixed disc 17 integral with the seat body 10 rotates when the seat body 10 turns, but Since sliding occurs between the motor coupling disc 15 and the fixed disc 17 with the sliding disc 16 having a small resistance interposed, it becomes possible to allow the seat body 10 to swivel, and the motor coupling disc 15 almost rotates. Never do, therefore
Output shaft 20 of drive motor 20 via pinion gear 19
Since a does not rotate, the seat body 10 can be easily turned manually, and the adverse effect on the drive motor 20 can be reliably prevented.

When the seat body 10 is automatically inverted at the terminal station or the like, first, the actuator is operated by the controller to lower the lock pin 12a so that the fitting state with the fitting hole 21i is released. Then, the controller drives the drive motor 20 in the reverse direction, for example, and then the actuator is deactivated to release the lowering of the lock pin 12a, whereby the pinion gear 19 rotates clockwise as viewed in FIG. The motor coupling disc 15 rotates counterclockwise as viewed in FIG. 2 against the sliding resistance between the motor coupling disc 15 and the sliding support plate 14,
The seat body 10 is inverted to the rear side, and the fitting hole 21 on the opposite side is formed.
When the lock pin 12a is fitted to i, the lock state is established. At this time, since the motor connecting disc 15 is rotationally driven by the drive motor 20, there is no slippage between the motor connecting disc 15 and the fixed disc 17 as described above, and the seat body 10 is connected to the motor connecting disc 15. It is rotated integrally with the disc 15.

Further, the motor connecting disk 15 and the fixed disk 1
Since the sliding disc 16 is inserted between the seven, if the sliding disc 16 wears due to long-term use, only the sliding disc 16 needs to be replaced, and the repair can be easily performed. It can be carried out.

In the above embodiment, the case where the drive motor 20 is fixed to the side of the box-shaped support 11 has been described. However, the present invention is not limited to this, and the drive motor 20 is disposed on the side of the seat cushion frame 21. Even when the seat body 10 is fixed, the drive motor 20 is rotationally driven to cause a slip between the motor coupling disc 15 and the fixed disc 17 having a small sliding resistance, so that the seat body 10 rotates. When the seat body 10 is manually swung, the sliding resistance between the motor coupling disc 15 and the fixed disc 17 is added to the resistance for rotating the drive motor 20 via the reduction mechanism, so that sliding It is possible to allow the seat body 10 to rotate by causing a slip between the support plate 14 and the motor coupling disc 15.

Further, in the above embodiment, the motor connecting disk 1
The case where the sliding disk 16 is inserted between the fixed disk 5 and the fixed disk 17 has been described, but the invention is not limited to this.
A low sliding resistance surface may be formed by coating or adhering a synthetic resin material such as nylon having low sliding resistance on at least one of the contact surfaces of the motor coupling disk 15 and the fixed disk 17. Good.

Furthermore, in the above embodiment, the case where the box-shaped support 11 is applied as the support has been described, but the present invention is not limited to this, and any L-shaped, T-shaped or U-shaped configuration is possible. It is possible to apply a support base in the shape of.

[0030]

As described above, according to the first aspect of the invention, the turntable for rotatably supporting the seat body with respect to the support base has the sliding support plate fixed to the support base. A motor coupling disc slidably disposed on the sliding support plate and coupled to a drive motor, and fixed to the seat body slidably disposed on the motor coupling disc. And a fixed disc, and the sliding resistance between the sliding support plate and the motor connecting disc is set to be larger than the friction resistance between the motor connecting disc and the fixed disc. Therefore, when the drive motor is fixed to the support base for rotation of the seat body during manual rotation of the seat body, the drive motor is fixed to the seat body between the motor coupling disc and the fixed disc on the seat body side. Sometimes the motor connecting disk and sliding support on the support base side Occurs respectively slippage between, without the need for a clutch mechanism may be of the seat body rotating force is reliably blocked from being transferred to the drive motor,
As a result, the entire structure can be simplified and the cost can be reduced.

Further, according to the second aspect of the invention, since the sliding disk is interposed between the motor connecting disk and the fixed disk, when the sliding disk is worn due to long-term use,
The effect that only this sliding disk needs to be replaced is obtained.

Further, according to the invention of claim 3, since the low sliding resistance surface is formed on at least one of the motor connecting disk and the fixed disk, the motor connecting disk and the fixed disk are formed. Since it is not necessary to provide a sliding disk between them, the number of parts can be reduced and the effect can be simplified.

[Brief description of drawings]

FIG. 1 is a front view for explaining the schematic configuration of a vehicle seat according to the invention.

FIG. 2 is a schematic exploded perspective view showing an enlarged main part of an embodiment of a vehicle seat according to the present invention.

FIG. 3 is a cross-sectional view showing a rotation adjusting mechanism according to the present invention.

[Explanation of symbols]

 1 Direction Change Type Vehicle Seat 2 Seat Cushion 3 Seat Back 10 Seat Body 11 Box Support 12 Lock Release Pedal 13 Rotation Adjusting Mechanism 14 Sliding Support Plate 15 Motor Connecting Disc 16 Sliding Disc 17 Fixed Disc 19 Pinion Gear 20 Drive Motor 21 Seat Cushion Frame 21i Fitting Hole 22 Seat Back Frame

Claims (3)

[Claims] 1. A railway vehicle seat in which a seat body is rotatably installed via a drive motor and a manually driven turntable on a support table arranged on the floor of a passenger compartment, wherein the turntable is Is a slide supporting plate fixed to the support base, a motor connecting disc slidably disposed on the slide supporting plate and connected to a drive motor, and a slide plate on the motor connecting disc. At least a fixed disc fixed to the seat body movably arranged, and a sliding resistance between the sliding support plate and the motor connecting disc is between the motor connecting disc and the fixed disc. A railway vehicle seat characterized by being set to be larger than the friction resistance. 2. The railway vehicle seat according to claim 1, wherein a sliding disc having a small sliding resistance is interposed between the motor coupling disc and the fixed disc. 3. The railway vehicle seat according to claim 1, wherein a low sliding resistance surface is formed on at least one of the motor coupling disc and the fixed disc.