JP3877902B2 - Retractable seat for vehicle - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a retractable seat suitable for a vehicle such as a railway vehicle.
[0002]
[Prior art and its problems]
In recent years, retractable seats have been used in railway vehicles, especially in trains used for commuting, to enable mass transport during times of congestion such as during rush hours and to provide seats to as many passengers as possible during times other than congestion. Yes. Since it is desired that crew members manage such storage seats, in particular, storage, a storage seat that can be remotely controlled by a switch operation provided in a conductor or driver's cab has been developed.
[0003]
The seating surface of this type of remotely-operable retractable seat is locked by the lock mechanism in the stowed position, and this lock mechanism is released when the crew operates the use switch, and the passenger pulls it out to the use position by hand. The seat pulled out to the use position can be moved to the storage position by operating the electric mechanism by the crew member operating the storage switch. Here, the seating surface that has moved to the use position is lowered from the use position by the contact of the stopper fixed to the frame of the seating surface and the stopper fixed to the seat frame that fixes the frame of the seating surface to the vehicle. However, movement in the storage position direction is restricted by the electric motor. Therefore, if the seat surface at the use position is forcibly moved toward the storage position, the electric mechanism may be damaged.
[0004]
OBJECT OF THE INVENTION
The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a vehicular retractable seat that allows the seat surface to be used and stored without damaging the seat surface storage mechanism.
[0005]
SUMMARY OF THE INVENTION
The invention according to claim 1, which achieves this object, is a retractable seat installed in a vehicle, a seat frame fixed to the vehicle, pivotally attached to the seat frame, and rotated to rotate the vehicle floor. A seat surface portion that is pivotable to a storage position that is substantially perpendicular to the surface and a use position that is substantially parallel, and the seat surface portion is allowed to rotate from the storage position to the use position, while the seat surface portion is Elastic urging means for urging and urging from the use position toward the storage position, a locking position for holding the seat surface portion in the storage position, and allowing the seat surface portion to rotate from the storage position to the use position. It is possible to move to the unlocking position, and when it is in the unlocking position, the seat surface part is allowed to rotate in the storage position direction, and when operating from the unlocking position to the locking position, Electric storage means for rotating the seat portion from the use position to the storage position; Characterized in that comprises a.
According to this configuration, even if the seat surface portion pulled out to the use position is moved in the storage position direction, no load is applied to the electric storage means, so that the electric storage means is not damaged.
A gas spring is suitable as the elastic biasing means. Since the gas spring is adjusted in the expansion / contraction speed, the seat surface portion is not rapidly rotated.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are perspective views showing an embodiment of a retractable seat for a railway vehicle to which the present invention is applied, in a used state and a stored state. The retractable seat 10 includes a seat surface portion 13 supported by a concave frame portion 11, a backsliding portion 15, and a pair of left and right armrest portions 17. Although not shown in detail, the frame part 11 is composed of a leg part with a built-in heater and a support part fixed to the left and right of the leg part, and includes an angle for fixing to the floor surface. A stepping plate 19 is attached to the front part of the leg part, and sleeve covers 21 are attached to the left and right support parts. On the upper surface of the both sleeve covers 21, an availability indicator lamp 23 that indicates whether the retractable seat 10 is prohibited or usable is mounted. The usability indicator lamp 23 displays, for example, an unusable character or a stored figure with a red lamp when it is not usable, and a usable character or a figure with a green or blue lamp when usable. Display and inform passengers of each location. In addition, the usability indicator lamp 23 may include characters “usable” and “unusable” beside the lamp.
[0007]
The main configuration of the retractable seat 10 will be further described with reference to FIGS. 3 is an exploded perspective view showing the structure of the main part of the seat surface part 13, and FIG. 4 is a side view showing the structure of the main part in the use position with the sleeve cover of the left columnar part removed from the seat. FIG. 5 is a front view showing the configuration of the main part on the right side of the seat when in use, and FIG. 6 shows the configuration of the main part in a state where the electric storage means is in the release position and the seat part is in the middle of rotation. FIG.
[0008]
The seat surface portion 13 has an appearance of the seat frame 31, the seat cushion 32 for the seat seat mounted on the seat frame 31, and the exterior of the retractable seat 10 mounted on the bottom surface of the seat cushion 32 for seat seat. The main part is comprised by the decorative board 32a to form.
[0009]
Brackets 33 are fixed to the left and right rear portions of the seating surface frame 31, and seating surface shafts 34 are implanted in the brackets 33 so as to protrude outwardly from the left and right. Each seat surface shaft 34 is rotatably inserted into a shaft hole 41 a of a seat surface hinge bracket 41 fixed to the columnar portion of the frame portion 11. The seat surface frame 31, that is, the seat surface portion 13, is supported by the seat surface shaft 34 and the seat surface hinge bracket 41 so as to be rotatable between a storage position and a use position.
[0010]
When the seat surface portion 13 is pulled out to the use position, the stopper 33a formed integrally with the bracket 33 comes into contact with the stopper 41b attached to the seat surface hinge bracket 41, and is at an angle substantially parallel to the floor surface. It is regulated so as not to fall from (use position). The stopper 41b is formed so that the position of the stopper surface 33a can be adjusted by a screw structure so that the angle of the seat surface portion 13 can be adjusted.
[0011]
A seating surface plate 43 is fixed to each tip of the seating surface shaft 34 that protrudes outward from the shaft hole 41a. The seat surface plate 43 and the seat surface shaft 34 are integrally fixed, and the seat surface frame 31 is also integrally rotated when the seat surface plate 43 rotates.
[0012]
A gas spring 53 is connected between the seat plate 43 and the bracket 51 fixed to the frame portion 11 as elastic biasing means for biasing the seat frame 31 in the storage position direction. The gas spring 53 is configured to have the longest total length in an unloaded state. In this embodiment, the total length of the gas spring 53 is increased when the seat surface portion 13 is in the storage position, and the seat surface portion 13 extends from the storage position. The gas spring 53 is configured to be compressed when the gas is pulled out. That is, in one embodiment, the gas spring 53 is configured to urge the seat surface portion 13 from the use position toward the storage position, and further, the seat surface portion 13 is rotated to the storage position in the vicinity of the storage position. In the vicinity of the use position, the balance is set so that the seat surface portion 13 is rotated to the use position by losing the rotational force due to the weight of the seat surface portion 13.
[0013]
In another embodiment, the gas spring 53 is biased so that the seat surface portion 13 does not rotate from the stowed position due to its own weight in the vicinity of the storage position, and balances with the weight of the seat surface portion 13 near the use position in any direction. The urging force is adjusted so that it does not rotate. In other words, when the seat surface part 13 is pulled out from the storage position toward the use position, if the hand is released near the storage position, the seat surface part 13 returns to the use position. It is configured not to rotate in any direction.
The gas spring 53 has a shaft hole formed at the tip of the cylinder part and the piston part so as to be rotatable on a shaft 43b planted on the seating surface plate 43 and a shaft 51a planted on the bracket 51. It is mated.
[0014]
In addition, the retractable seat 10 is configured such that the backslider 15 and the armrest 17 are moved between the storage position and the use position in conjunction with the movement of the seat surface portion 13. This interlocking mechanism will be further described with reference to FIGS.
[0015]
The main part of the backslider 15 includes a backslid frame 61 and a backslid cushion 62 attached to the backslid frame 61. The backsliding frame 61 has a shaft 63 fixed to the upper ends of its left and right outer surfaces. The shaft 63 is pivotally supported by a support column of the frame 11 and is supported so as to be rotatable about the shaft 63. Yes.
[0016]
The vicinity of the lower end portion of the side surface of the backsliding frame 61 and the bracket 33 fixed to the seat surface portion 13 are connected by a link plate 64 bent in an arc shape. The backsliding frame 61 is held by the link plate 64 in a use state in which the lower end protrudes and is inclined at a predetermined angle from the vertical direction when the seat frame 31 is in the use position (see FIGS. 1 and 4). When 31 rotates in the storage position direction, the lower end portion rotates rearward and is held in a storage state substantially perpendicular to the floor surface at the storage position (see FIG. 2). When the seat frame 31 is rotated from the storage position in the use position direction, the backsliding frame 61 is in a use state in which the lower end portion is rotated forward by the link plate 64 and inclined at a predetermined angle from the vertical direction.
[0017]
Each armrest portion 17 is mainly composed of an armrest frame 71 and an armrest cushion 72 attached to the armrest frame 71. And it is pivotally supported by the bracket 51 fixed to the frame portion 11 via an armrest shaft 73 fixed to the seat outer surface of the armrest frame 71.
[0018]
Further, a bracket 74 extending from the armrest shaft 73 into the seat is fixed to the armrest frame 71, and the rear end portion of the bracket 74 and the seating surface plate 43 are connected to each other by a link rod 75. When the seat frame 31 is in the use position, the armrest frame 71 is pulled out of the storage position by the link rod 75 and held in the use position substantially horizontal to the floor surface as in the case of the seat frame 31 (FIGS. 1, 4). reference). When the seat frame 31 is rotated in the storage position direction, the armrest frame 71 is held in a storage state that is substantially perpendicular to the floor surface in the storage position, with the rear end rotating downward and the front end rising. 2). When the seat frame 31 is rotated from the storage position toward the use position, the armrest frame 71 is in a use state in which the front end portion is rotated downward and the rear end portion is rotated upward to be substantially horizontal with the floor surface. The link rod 75 in the illustrated embodiment is connected to the interlocking shaft 43 b planted on the seating surface plate 43 and the bracket 74. The link rod 75 is configured such that the angle of the armrest 17 can be adjusted by adjusting the overall length.
[0019]
The retractable seat 10 includes an electric reclining device 44 as an electric retracting means that restricts the seat surface portion 13 from being rotated from the use position to the storage position by a motor so as not to rotate from the storage position toward the use position. Yes. The electric reclining device 44 operates so that the seat surface portion 13 can be rotated from the storage position to the use position when the retractable seat 10 is usable, and the seat surface portion 13 in the storage position is moved to the use position. It is formed so that it can be manually rotated. In the illustrated embodiment, the electric reclining devices 44 are provided on the left and right sides of the retractable seat 10, but may be provided only on one side or in the center.
[0020]
The electric reclining device 44 includes a motor 46 attached to the base plate 45 and a lock plate 47 that is rotated at a reduced speed by the motor 46. The electric reclining device 44 is attached to a bracket 49 fixed to the lower portion of the columnar portion of the frame portion 11 via the base plate 45. The lock plate 47 is formed to be swingable about the rotation shaft 48 and is driven via a motor 46 and a reduction gear train (not shown). 4 and 6, the rotation shaft 48 and the seating surface shaft 34 are shifted from each other, but they may be positioned on the same axis.
[0021]
A lock pin 47a is implanted at a position away from the center of the rotation shaft 48 of the lock plate 47 by a predetermined length. The lock pin 47 a is formed so as to be able to contact the contact surface 43 a of the seat surface plate 43 from the use position toward the storage position. The lock pin 47a is brought into contact with the contact surface 43a of the seat surface portion 13 at the storage position by the rotation of the lock plate 47, and the lock position prevents the seat surface portion 13 from rotating from the storage position toward the use position. The seat surface 13 moves on an arc centered on the rotation shaft 48 to the unlocking position where the seat surface portion 13 can be rotated to the use position. And in the latch release position, even if the seat surface part 13 rotates to a use position, it forms so that the contact surface 43a may not contact | abut to the lock pin 47a. The contact surface 43a is formed by the end surface of the reinforcing plate fixed to the seat surface plate 43 and the end surface of the seat surface plate 43 itself.
[0022]
The storing and withdrawing operations of the retractable seat 10 will be further described with reference to FIG. 6 and an embodiment of the remote control system shown in FIG. The motor 46 is remotely controlled by a control device including a use switch SW 1, a storage switch SW 2, a control circuit 81 and a drive circuit 83 provided in the conductor or driver's cab. That is, when the switches SW1 and SW2 are turned on by the driver, the conductor, etc., the control circuit 81 detects this and moves the motor 46 via the drive circuit 83 in the unlocking position direction (use position direction) or the engagement. The motor 46 is stopped when the lock pin 47a is moved to the lock release position or the lock position by rotating in the stop position direction (storage position direction). Details of operation during use and storage are as follows.
[0023]
When the use switch SW1 is turned on, the control circuit 81 rotates the motor 46 in the direction of the lock release position (use position direction) via the drive circuit 83, and moves the motor 46 when the lock pin 47a moves to the lock release position. Stop. Thus, when the lock pin 47a is rotated to the unlocking position, the lock pin 47a is separated from the contact surface 43a, so that the seat surface portion 13 is contacted by the combined force of the urging force of the gas spring 53 and its own weight. The surface 33a is held at the use position where it contacts the stopper 41b. The state in which the lock plate 47 is rotated to the unlocking position is shown in FIGS.
[0024]
Further, the control circuit 81 turns on a lamp that indicates that the usable lamp 23 can be used. This usable display informs the passenger that the seat 13 can be pulled out and seated. Whether or not the seat surface portion 13 is pulled out in this usable state is left to the judgment of the passenger.
[0025]
When the passenger pulls out the seat surface portion 13, the backsliding portion 15 and the armrest portion 17 move to the use position in conjunction with the use position direction rotation of the seat surface portion 13, the stopper 33a abuts against the stopper 41b, and the seat surface portion 13 Hold in use position. In this use position, the contact portion 43a is separated from the lock pin 47a.
[0026]
When the passenger pulls up the seat surface portion 13 at this use position, the contact surface 43a moves in a direction further away from the lock pin 47a. FIG. 6 shows a state in which the seat surface portion 13 is lifted by about 45 °. As is apparent from this figure, no external force acts on the lock pin 47a, the lock plate 47, and the motor 46 even when the seat surface portion 13 is pulled up, so that the electric reclining device 44 is not damaged. Moreover, since the extension force of the gas spring 53 is acting on the seat surface portion 13, it can be raised and lowered while the speed is controlled.
Further, the passenger can manually move the seat surface portion 13 to the storage position. When the seat surface portion 13 is moved to the storage position, it is held at the storage position by the urging force of the gas spring 53. Moreover, the passenger can pull out the seat surface portion 13 from the storage position to the use position by hand.
[0027]
On the other hand, when the storage switch SW2 is turned on, the control circuit 81 energizes the motor 46 to move the lock pin 47a to the locking position, and rotates the lock plate 47 in the locking position direction. Then, the lock pin 47a comes into contact with the contact surface 43a and pushes it to rotate the seat surface portion 13 in the storage position direction. When the seat surface portion 13 is rotated to the storage position, that is, when the lock pin 47a is moved to the locking position, the motor 46 is stopped. In this locking position, the lock pin 47 abuts against the abutment surface 43a to prevent the seat surface portion 13 from rotating in the use position direction. Further, the control circuit 81 turns on a lamp indicating that the use is disabled on the availability lamp 23 and informs the passenger that the seat portion 13 cannot be pulled out.
[0028]
Although FIG. 7 shows a configuration for a set of retractable seats 10, a switch that can operate the motors 46 of the retractable seats 10 of all the vehicles in the train at once is usually provided. . In addition, a switch that can be controlled for each vehicle or a switch that can be controlled for each retractable seat 10 may be used.
[0029]
As described above, the retractable seat 10 according to the present embodiment does not transmit any external force to the electric reclining device 44 even if an external force in the storage position direction is applied to the seat surface portion 13 in the use position, so that the electric reclining device 44 is damaged. There is no fear.
[0030]
Further, a storage and use position sensor for detecting that the seat surface portion 13 is in the storage position and the use position are provided, and that the motor 46 is activated and can be used when the lock pin 47a is moved to the lock release position. Displayed by lighting of the usability indicator lamp 23, and a configuration in which the usability indicator lamp 23 is turned off when the use position sensor detects that the seat surface portion 13 has moved to the use position, and the motor 46 is activated to lock pin 47a When the storage sensor detects that the seat surface portion 13 has moved to the storage position, the use permission indicator lamp 23 indicates that it cannot be used when moving the lock from the lock release position to the lock position direction. With the configuration in which the indicator lamp 23 is turned off, it is possible to notify the passengers of whether or not the seat portion 13 can be used and to save power. Moreover, if the availability indicator lamp 23 of the retractable seat 10 is configured to light up to the effect that the retractable seat 10 is usable only when the retractable seat 10 is in the retracted state, the number of members can be reduced. Power saving can be achieved.
In addition, by providing the control device with display means for displaying the detection state of each sensor, the crew can monitor the use state or abnormality in an integrated manner.
[0031]
【The invention's effect】
As is apparent from the above description, in the present invention, the electric storage means for moving the seat surface portion from the use position to the storage position has the locking position for holding the seat surface portion in the storage position, and the seat surface portion is rotated from the storage position to the use position. It is possible to move to the unlocking position that allows movement, and when it is in the unlocking position, the seat surface part is allowed to rotate in the storage position direction, and operates from the unlocking position to the locking position. Since the seat surface portion is configured to rotate from the use position to the storage position when the seat surface portion is in the use position, even if the seat surface portion is pulled up by a passenger or the like, no external force acts on the electric storage means. The electric storage means will not be damaged or broken.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a retractable seat for a railway vehicle to which the present invention is applied in a use state.
FIG. 2 is a perspective view showing an embodiment of the retractable seat for the railway vehicle in a stored state.
FIG. 3 is an exploded view showing main components of the railcar stowable seat.
FIG. 4 is a side view of main components in the use state of the railcar stowable seat as viewed from the left side toward the seat.
FIG. 5 is a front view showing the main components on the right side of the retractable seat for the railway vehicle in use.
FIG. 6 is a side view of main components in the use state of the retractable seat for the railway vehicle as viewed from the left side toward the seat.
FIG. 7 is a block diagram showing an embodiment of a control system of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Retractable seat 11 Frame part 13 Seat surface part 15 Back-sliding part 17 Armrest part 19 Stepping plate 21 Sleeve cover 31 Seat surface frame 32 Seat cushion for seat surface 33 Bracket 33a Stopper 34 Seat surface shaft 41 Seat surface hinge bracket 41b Stopper 43 Seat Face plate 43a Contact surface 44 Electric reclining device 46 Motor 47 Lock plate 47a Lock pin 48 Rotating shaft 49 Bracket 53 Gas spring 61 Back slide frame 62 Back slide cushion 64 Link plate 71 Armrest frame 72 Armrest cushion 73 Armrest shaft 74 Bracket 75 Link Bar 81 Control circuit 83 Drive circuit SW1 Use switch SW2 Storage switch

Claims (3)

A retractable seat installed in a vehicle,
A seat frame fixed to the vehicle;
A seat surface portion pivotally attached to the seat frame and capable of rotating to a storage position substantially perpendicular to the floor surface of the vehicle and a use position substantially parallel to the seat position;
Elastic biasing means for biasing the seat surface portion from the use position toward the storage position while allowing the seat surface portion to rotate from the storage position to the use position;
It is possible to operate between a locking position for holding the seat surface portion in the storage position and a lock release position that allows the seat surface portion to rotate from the storage position to the use position. Electric seating means for allowing the seat surface portion to rotate in the storage position direction in some cases and rotating the seat surface portion from the use position to the storage position when operating from the unlocking position to the locking position; A retractable seat for a vehicle. 2. The retractable seat for a vehicle according to claim 1, wherein the electric storage means includes a motor and a lock pin that moves on an arc by the motor and that can contact a plate provided at a frame end of the seat surface portion. In the electric reclining device, the lock pin abuts on the plate in the locking position to hold the seat surface portion in the storage position, and in the unlocking position, the lock pin separates from the plate and the seat surface portion is It is allowed to rotate from the storage position to the use position, and when the motor is moved from the lock release position to the lock position, the plate is pressed to rotate the seat portion from the use position to the storage position. Retractable seat for the vehicle. 2. A storage seat for a vehicle according to claim 1, wherein the elastic biasing means is a gas spring, and when the seat surface portion is in the vicinity of the storage position, the gas spring moves the seat surface portion toward the use position by its own weight. Storage for a vehicle that is biased from the use position toward the storage position so as not to rotate, and is configured to allow the seat surface portion to rotate to the use position by its own weight when the seat surface portion is in the vicinity of the use position. Ceremony seat.

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