JPH07329618A - Direction changing device for vehicle seat - Google Patents

Abstract

PURPOSE:To reduce the number of part items and the number of assembly processes, by providing a cable for releasing which is extended through guide member for cable, whose other end is connected to a lock member to make the lock member in the restriction released condition linking to a driving shaft, while whose one end is connected to the driving shaft. CONSTITUTION:A lock releasing member 30a is provided in order to make all the seats rotatable, when numerous seats are reversed all at once. The lock releasing member 30a is composed to extend a driving shaft 40 which can move in the axial direction by a drive motor 30. Since a motive power source such as an electric motor and an air cylinder is not necessary to provide to each seat 10, and numerous electric wirings and air pipings to control the motive power source are not necessary to provide, the number of part items can be reduced extensively, and the assembly processes can be also reduced extensively. And a rotary seat plate 12 to support the seats 11 is rotated 180 deg. so as to position the seat backs 11a at the reversed positions facing in the opposite direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a vehicle in which a large number of seats are arranged in a row, and the plurality of seats arranged in the row are rotated so that the respective seats are oriented in the same direction. For a vehicle seat turning device.

[0002]

2. Description of the Related Art When a vehicle arrives at a terminal station, the seat of the vehicle is turned over by 180 degrees so as to turn in a new direction. Conventionally, as disclosed in Japanese Examined Patent Publication No. 56-47015, the underframe of the seat is non-rotatably restrained at each inversion position by a stopper pin, and the pedal is operated to
After lowering the stopper pin to release the restraint on the seat, the seat is turned. On the other hand, in order to improve the direction changing workability, a direction changing device for performing the work by using power instead of manually is considered.

[0003]

However, in such a conventional vehicle seat turning device, it is necessary to operate the pedals for each seat to release the restraint of the seats, which makes the turning operation cumbersome. There is a problem that it is not good. On the other hand, it is possible to incorporate an actuator into each seat and control the actuator to release the restraint of the seat, but this will increase the number of parts and the number of air pipes and electric wiring, which will reduce the cost. There was a problem that it greatly hinders the reduction. The present invention has been made by paying attention to the problems of such a conventional technique. In addition to improving workability, one drive shaft that can be moved in the axial direction by power is provided along multiple seats. An object of the present invention is to provide a vehicle seat direction changing device that can be extended so as to reduce the number of parts, the number of assembly steps, and the cost.

[0004]

A plurality of seats (10) are arranged in a row in a vehicle, and the plurality of seats (10) arranged in the row are rotated so that each seat (10) is rotated. In a vehicle seat direction changing device in which the seats (10) can be rotated by operating a lock member (22) that holds each seat (10) in a non-rotatable manner. Lock release mechanism (30a) for releasing the restraint
In which the lock release mechanism (30a) is provided.
Is a drive shaft (40) extending along the multiple seats (10) arranged in the row and movable in the axial direction by power (30), and One end of the lock member (22) is connected to the drive shaft (40) while being extended through a cable guide member (51).
The lock member (2
2) The cable for releasing the other end is connected (5
0) and a vehicle seat turning device.

2 One end of a backrest cable (60) is connected to the releasing cable (50), and the restraining member (7) of the reclining mechanism (70) is connected to the drive shaft (40).
5) is interlocked with the backrest portion (11a) from the state in which the backrest portion (11a) is constrained to be inclinable to the restraint released state, and the backrest portion (11a) is returned from the reclining posture to the standing posture by the biasing force. The vehicle seat turning device according to claim 1, wherein the other end of the cable (60) is connected to the restraining member (75) of the reclining mechanism (70).

[0006]

In order to extend one drive shaft (40) that can move in the axial direction along a large number of seats (10) arranged in a row, an electric motor, an air cylinder, etc. are provided for each seat (10). It is not necessary to arrange a power source for the power source, and it is not necessary to arrange a large number of electric wiring or air piping for controlling the power source, so that the number of parts is greatly reduced and the assembly man-hour is also significantly reduced. be able to. When the drive shaft (40) moves in the axial direction by the power (30) while the lock member (22) holds the seat (10) in a non-rotatable state, the releasing cable (50) is guided. It is pushed and pulled, the lock member (22) is released from the restraint state, and the seat (10) is rotatable. When the seat (10) becomes rotatable, the power for turning the seat (10) is activated to turn the seat (10).

One end of the backrest cable (60) is connected to the release cable (50), and the drive shaft (4)
0) The restraint member (75) of the reclining mechanism (70)
Interlock with each other to bring the backrest portion (11a) from the state in which the backrest portion (11a) is not tiltable to the restraint release state and to return the backrest portion (11a) from the reclining posture to the standing posture by the biasing force.
In the case where the other end of the backrest cable (60) is connected to the restraining member (75) of the reclining mechanism (70), when the drive shaft (40) moves in the axial direction by the power (30). , The restraining member (75) of the reclining mechanism (70) is interlocked via the releasing cable (50) and the backrest cable (60) to enter the restraint release state, and the backrest portion (11a) The urging force changes the posture from the reclining posture to the standing posture. The seat (1
When changing the direction of 0), the backrest (11a) in the reclining posture does not get in the way and the front and rear seats (10) are
Can be turned without interfering with each other, and the seat (10) can be manually turned during turning of the seat (10).
There is no need to return the reclining posture to the standing posture,
Workability is improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Each drawing shows an embodiment of the present invention. As shown in FIGS. 1 to 5, for example, a train is provided with a seat 10 for two persons, and a seat portion 11 of the seat 10 is supported by a base 13 so as to be rotatable by 180 degrees. The vehicle seat turning device according to the present embodiment, for example, at the terminal station,
The large number of seats 10 are rotated by 180 degrees all at once so that the seats 10 are turned in new directions.
The seat 10 is provided with a seat portion 11 having two seats and a backrest portion 11a which can be raised and lowered separately, and each of the backrest portions 11a has a retractable table T for use by a seated person in the back seat. Equipped. The seat portion 11 is held by a rotary seat plate 12, and the rotary seat plate 12 is supported by a base 13 so that it can rotate 180 degrees and be inverted. Further, a drive device 15 for rotating the rotary seat plate 12 is mounted on the base 13. Base 1
3 includes a cushioning spring member 16 with which the rotary seat plate 12 elastically abuts when the rotary seat plate 12 changes direction to each inversion position.
Is provided.

The train has a drive shaft 40 extending along a number of seats 10 on the side opposite to the passage. Drive shaft 40
A rack member 42 is fixed to the base end of the drive shaft 40.
An output pinion of the drive motor 30, which is a power source, meshes with the rack member 42 in order to drive the motor in the axial direction. Figure 1
As shown in FIG. 6 and FIG. 6, a joint member 43 is provided corresponding to each seat 10, and screw holes 44 are screwed in the front surface portion and the rear surface portion of the joint member 43, and the drive shaft is provided in each screw hole 44. The screw portion 40a of the screw 40 is screwed on, and the loosening prevention nut 45 is screwed on the screw portion 40a. That is, the drive shaft 40 is extended via the joint member 43. The joint member 43 is provided with an insertion hole 46 penetrating in a direction orthogonal to the front-rear direction, a bolt member 47 is inserted into the insertion hole 46, and is fastened to the joint member 43 by a nut member 48. The bolt member 47 is provided with a prepared hole 47a penetrating in the front-rear direction.

Corresponding to the joint member 43, the base 13
A connecting bracket 49 is fixedly attached to the side edge of the connecting bracket 49, an outer casing 51 of a releasing cable 50 is fastened to the connecting bracket 49, and an inner wire 52 of the releasing cable 50 is inserted into the prepared hole 47a. The bolt member 47 is connected to the joint member 43. As shown in FIGS. 1, 7 and 8, the releasing cable 5
The reference numeral 0 extends below the base 13 to the side edge of the base 13 on the passage side, and the tip of the outer casing 51 is connected to a support bracket 53 fixed to the base 13.

A lock mechanism 20 for restraining the rotary seat plate 12 at each inversion position is provided. Lock mechanism 20
Attaches the foot pedal 21 to the leg portion side of the base 13 through the pivot 21a.
The lock pin 22 which is a lock member is attached to the middle portion of the foot pedal 21 and the foot end 21b at the end of the foot pedal 21 is pushed or released so that the lock end 22a of the lock pin 22 is a support surface portion. It is arranged so as to project from the surface of the end of the. At both ends of the rotary seat plate 12 that supports the seat portion 11, there are lock holes (not shown) into which the lock ends 22a are inserted. Also, foot pedal 2
1 includes a biasing spring 23 and a lock end 22a of the lock pin 22.
Is urged in the protruding direction. At the base end of the foot pedal 21, the foot pedal 2 is centered around the pivot 21a.
1, an arm member 54 is fixed so as to be swingable integrally with the inner wire 1, and the inner wire is attached to the tip of the arm member 54 in order to retract the lock pin 22 against the urging force of the urging spring 23. The tip of 52 is connected via a connector 55.

The connector 5 is attached to the tip of the arm member 54.
Similarly, a connector 66 is connected to the side opposite to 5, and an inner wire 62 of a backrest cable 60 is connected to the connector 66. The outer casing 61 of the backrest cable 60 includes a bracket support bracket 53.
It is fixed to the base 13 side via. The tip of the backrest cable 60 extends to the reclining mechanism 70 side. As shown in FIGS. 8 and 9, the backrest portion 1
1a is supported by a seat portion 11 so as to be tiltable between a standing posture and a reclining posture, and the backrest portion 11 is supported at the supported portion.
A connecting arm 11b that is tiltable integrally with a is fixedly installed. The reclining mechanism 70 is attached to the connecting arm 11b.
Cylinder body 72 of gas spring member 71 constituting the
Are connected at one end. A piston rod 73, which can be retracted from the other end of the cylinder body 72, is connected to the seat portion 11 side via a connector 76. Piston rod 73
A pin 74 is supported at the center of the rod so as to be retractable in the axial direction of the rod, and a valve 75 as a restraint member is formed at one end of the pin 74. The valve 75 shuts off an oil passage that connects two chambers (not shown) in the cylinder body 72, and establishes a restrained state in which the backrest portion 11a is restrained in a tiltable state and a restrained state in which the oil passage is in communication. To do. The backrest portion 11a is urged by a gas (not shown) in the cylinder body 72 in a direction to return to the standing posture.

The tip of the outer casing 61 of the backrest cable 60 is connected to the connector 76. An output arm 77 is pivotally attached to the connector 76 so as to be swingable. The tip of the inner wire 62 is connected to the output arm 7
It is connected to the pin 74 via 7. Backrest 11a
An armrest 80 is attached to the armrest 80, and an operation member 81 is attached to the armrest 80. When the push button 82 is operated, the operation member 81 causes the L-shaped relay arm 83.
The inner wire 85 of the control cable 84 is pulled through the pin 74, the pin 74 is retracted to the piston rod 73 side, the valve 75 communicates with the oil passage, and the constraint state is released. ing.

Next, the operation will be described.

When a large number of seats 10 are turned over at the same time, a lock release mechanism 30a is provided so that each seat can rotate.
Since the lock release mechanism 30a is configured to extend the drive shaft 40 that is movable in the axial direction by the drive motor 30, it is not necessary to dispose a power source such as an electric motor or an air cylinder for each seat 10. Further, it is not necessary to arrange a large number of electric wirings or air pipes for controlling the power source, the number of parts can be greatly reduced, and the number of assembling steps can be significantly reduced. The rotary seat plate 12 that supports the seat portion 11 rotates 180 degrees, and the backrest portion 11a can assume the inverted position in the opposite direction. At each inversion position, the base 13 is restrained at that position by the lock mechanism 20. When the seat 10 is manually inverted, the stepping end 21b of the stepping pedal 21 is first depressed to release the restraint by the lock mechanism 20. That is, the foot end 21b
The foot pedal 21 moves the pivot 21a
When the lock pin 22 is pulled clockwise, the lock pin 22 is pulled downward and the lock end 22a is pulled downward to come out of a lock hole (not shown), so that the rotary seat plate 12 is released from the restraint and becomes rotatable.

When the stepping end 21b of the stepping pedal 21 is stepped on, the arm member 54 swings integrally with the stepping pedal 21, and the inner wire 62 is pulled. Inner wire 6
When 2 is pulled, the output arm 77 swings and the pin 74
Is retracted to the piston rod 73 side, the valve 75 communicates with the oil passage, and the backrest portion 11a is released from the restraint state.
The piston rod 73 projects due to the biasing force of the gas in the cylinder body 72, and the backrest portion 11a returns from the reclining posture to the standing posture. Thereby, when the seat 10 is turned over, the backrest portion 11a does not interfere with the front and rear seats and does not interfere. Next, the rotary seat plate 12 that supports the seat portion 11 is rotationally driven to rotate 180 degrees, and while the end portion of the rotary seat plate 12 bends the cushioning spring member 16, it eventually locks when it reaches the reverse position. Locked end 2 of pin 22
2a comes to a lock hole (not shown), projects and fits into the lock hole, and the rotary seat plate 12 is held by the lock mechanism 20 again at the inverted position. The rotary seat plate 12 that supports the seat portion 11 can be turned and rotated by the drive device 15. At this time, for example, the odd-numbered seats and the even-numbered seats are reversed with respect to the time so that the front and rear seats 10 do not interfere with each other. First, the drive motor 30 moves the rack member 42 rearward, and the drive shaft 40 also moves rearward. As a result, the inner wire 52 of the releasing cable 50 is pulled via the joint member 43 and the bolt member 47, and the arm member 54 swings clockwise in FIG. 7 about the pivot shaft 21a.

When the arm member 54 swings, the pivot 21a
The foot pedal 21 swings around, and the lock end 22a of the lock pin 22 withstands against the urging force of the urging spring 23, and is retracted, and is withdrawn from a lock hole (not shown). Can be flipped. When the arm member 54 swings, the inner wire 62 of the backrest cable 60 connected to the arm member 54 is pulled. When the inner wire 62 of the backrest cable 60 is pulled, the output arm 77 swings, the pin 74 is retracted to the piston rod 73 side, and the valve 75 communicates with the oil passage, as described above. The backrest portion 11a is released from the restraint state, and the urging force of the reclining mechanism 70 causes the piston rod 73 to move.
Is projected, and the backrest portion 11a returns from the reclining posture to the standing posture. Backrest 11 returned to the standing posture
When the seat 10 is turned over, a does not interfere with the front and rear seats 10 and does not interfere.

The end of the rotary seat plate 12 is a spring member 1 for cushioning.
When the seat 10 eventually reaches the inverted position while bending the seat 6, the lock end 22a of the lock pin 22 comes to a lock hole (not shown), projects into the lock hole, and is again inserted into the inverted position by the lock mechanism 20. The rotary seat plate 12 is restrained and held. Although the inner wire 52 is guided by the outer casing 51 in the above-described embodiment, the guide member for the cable is not limited to this, and may be a guide member for guide or a pulley for guide. It may be one.

[0019]

According to the vehicle seat direction changing device of the present invention, one drive shaft that is movable in the axial direction by power is extended along a large number of seats, and the drive shaft allows the lock member to move. Since a large number of seats are released from the restraint state that allows simultaneous rotation, workability is improved and, for example, it is not necessary to allocate power such as an electric motor or an air cylinder to each seat. Since it is not necessary to arrange a large number of electric wirings or air pipes for controlling the power, the number of parts can be significantly reduced, the number of assembly steps can be significantly reduced, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a vehicle seat turning device according to an embodiment of the present invention with a seat portion removed.

FIG. 2 is a plan view of a vehicle seat turning device according to an embodiment of the present invention.

FIG. 3 is a front view of a vehicle seat turning device according to an embodiment of the present invention.

FIG. 4 is a rear view of the vehicle seat turning device according to the embodiment of the present invention.

FIG. 5 is a side view of the vehicle seat turning device according to the embodiment of the present invention.

FIG. 6 is a partial perspective view of a vehicle seat turning device according to an embodiment of the present invention.

FIG. 7 is a front view showing a vehicle seat turning device according to an embodiment of the present invention with the seat removed.

FIG. 8 is a side view of the vehicle seat turning device according to the embodiment of the present invention.

9 is a view on arrow IX in FIG. 8. FIG.

[Explanation of Codes] 10 ... Seat 11 ... Seat 12 ... Rotating Seat 13 ... Base 20 ... Lock Mechanism 21 ... Foot Pedal 22 ... Lock Pin (Lock Member) 30a ... Lock Release Mechanism 30 ... Drive Motor (Power) 40 Drive shaft 50 Release cable 51 Outer casing (cable guide member) 52 Inner wire 60 Backrest cable 61 Outer casing 62 Inner wire 70 Reclining mechanism 71 Gas spring member 72 ... Cylinder body 73 ... Piston rod 74 ... Pin 75 ... Valve 80 ... Armrest 81 ... Operating member

Claims (2)

[Claims] 1. A direction of a vehicle seat in which a plurality of seats are arranged in a row in a vehicle, and the plurality of seats arranged in the row are rotated so that the respective seats are oriented in the same direction. A conversion device, which operates a locking member that restrains each seat from rotating,
In a structure provided with a lock release mechanism that brings each seat into a rotatable release state, the lock release mechanism is extended along a large number of seats arranged in the one row, and is movable in the axial direction by power. One drive shaft, and one end of which is connected to the drive shaft, is extended through a cable guide member, and the lock member is interlocked with the drive shaft so that the lock member is released from the restraint state. A direction changing device for a vehicle seat, comprising: a lock member, and a cable for releasing the other end of the lock member. 2. The restraint member of the reclining mechanism is interlocked with the drive shaft by connecting one end portion of the backrest cable to the releasing cable, and the restraint is released from the state in which the backrest portion is restrained in a tiltable manner. 2. The vehicle according to claim 1, wherein the other end of the backrest cable is connected to a restraining member of the reclining mechanism so that the backrest portion returns to the standing posture from the reclining posture by the biasing force. Seat turning device.