JP3961715B2 - 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. This type of remotely-operable retractable seat is configured such that when a seat in use is stored, a crew member operates the switch to move the seat surface to the storage position by an electric mechanism. The seat surface that has moved to the storage position is locked to the storage position by the lock mechanism. When the seat in the retracted state is made usable, the crew member remotely operates to release the lock mechanism. In this unlocked state, the user can move the seating surface to the used state by hand.
[0003]
However, the conventional retractable seat that uses the rotational force of the motor to store the seat surface, such as when the luggage is sandwiched between the seat surface and the backrest when the seat surface is moved to the storage position, etc. When the seat surface cannot be moved to the storage position, the motor is overloaded. For this reason, a protection circuit and a control circuit for protecting the motor so as to prevent the motor from being damaged by an overload are required, which increases the cost.
[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 stored without damaging the seat surface storage mechanism with a simple configuration. To do.
[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 can be pivotally moved to a storage position that is substantially perpendicular to the surface and a use position that is substantially parallel, and a use position lock mechanism that locks the seat surface portion to the use position when the seat surface portion moves to the use position. And an electric lock releasing means for releasing the lock of the use position lock mechanism, a storage position lock mechanism for locking the seat surface portion to the storage position when the seat surface portion moves to the storage position, and the storage position lock mechanism. And an electric lock releasing means for releasing the lock , and a gas spring means for allowing the seat surface portion to rotate from the storage position to the use position and for biasing the seat surface portion from the use position to the storage position. And with Said seat surface portion of one side to the use position locking mechanism, the storage position locking mechanism is arranged on the other side, the electric unlocking means and said housing position locking mechanism and the use position locking mechanism is connected by a wire, the Each of the use position lock mechanism and the storage position lock mechanism has a member provided on the seat surface portion side and a member provided on the seat frame side, and these members are accompanied by the rotation of the seat surface portion. And a mechanism that engages with each other.
According to this stowable seat, when used, the passenger moves the seat surface portion in the stowed position to the use position against the urging force of the gas spring means. Since it is locked at the use position by the position lock mechanism, it can be easily put into use. When storing the seat surface part, the electric lock releasing means is operated, but when the electric lock releasing means is operated, the lock of the use position lock mechanism is released, and the seat surface part is moved from the use position to the storage position by the gas spring means. Even if an external force for preventing the movement of the seat surface portion is applied, the seat surface portion and the gas spring means are not overloaded, and the gas spring means is not overloaded. On the other hand, the seat portion when no external force is applied returns to the storage position in a state where the speed is controlled by the elastic biasing force of the gas spring means.
[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, a backslider portion 15, and a pair of left and right armrest portions 17 supported by a concave frame portion 11. Although not shown in detail, the frame portion 11 includes an angle for fixing to the floor surface, and includes a leg portion with a built-in heater and a column portion fixed to the left and right of the leg portion. 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 letter or a figure with a green or blue lamp when usable. Display and inform passengers of each condition.
[0007]
The main configuration of the retractable seat 10 will be further described with reference to FIGS. FIG. 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 state with the sleeve cover of the left columnar part removed from the seat. 5 is a side view showing the configuration of the main part in the stored state with the sleeve cover of the right columnar part removed from the seat, and FIG. 6 is a front view of 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. 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 seating surface shaft 34 is rotatably inserted into shaft holes 41a and 42a of seating surface hinge brackets 41 and 42 fixed to the columnar portions 11a and 11b of the frame portion 11. The seat surface portion 13 is rotatably supported by the seat surface shaft 34 and the seat surface hinge brackets 41 and 42 at the storage position and the use position. 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 stoppers 41b and 42b fixed to the seat surface hinge brackets 41 and 42 so that the seat surface portion 13 is It is regulated so as not to fall from an angle (use position) substantially parallel to the floor surface.
[0009]
The striker brackets 43 and 44 are fixed to the front end portions of the seating surface shaft 34 protruding from the shaft holes 41a and 42a in the seat outer direction. Strike pins 43a and 44a are implanted in the striker brackets 43 and 44, respectively. The strike pin 43a of the left striker bracket 43 engages with a use position lock 45 fixed to the seat surface hinge bracket 41 when the seat surface part 13 is pulled out to the use position, thereby fixing the seat surface part 13 in the use position. It is configured so as to prevent it from rotating in the storage position direction (see FIG. 4). The strike pin 44a of the right striker bracket 44 engages with a storage position lock 46 fixed to the seat surface hinge bracket 42 when the seat surface portion 13 is pushed into the storage position, thereby fixing the seat surface portion 13 in the storage position. (Refer to FIG. 5).
[0010]
The use position lock 45 and the storage position lock 46 are not shown in detail, but when the strike pins 43a and 44a enter the lock grooves 45a and 46a, the lock plate advances to the position where the strike pins 43a and 44a are disconnected (locked). ). For example, the guide plate is rotated by the strike pins 43a and 44a that have entered the lock grooves 45a and 46a, and the lock plate is rotated against the urging force of the snap action spring in conjunction therewith. When the strike pins 43a, 44a enter the vicinity of the lock position of the lock grooves 45a, 46a, the lock plate rotates to the lock position with the urging direction of the snap action spring reversed to the lock position, and the strike pin 43a, 44a is prevented from locking through the locking grooves 45a and 46a, that is, locked.
[0011]
Further, the lock plate rotated to the lock position is rotated by the wires 49 and 50 in the direction of the lock release position that comes out of the lock grooves 45a and 46a, but the wires 49 and 50 are pulled by the actuators 47 and 48. The lock plate pulled by the wires 49 and 50 is urged toward the unlocking position by reversing the urging force of the snap action spring in the middle of its rotation, and unlocked by rotating to the unlocking position by the urging force. To do. That is, the strike pins 43a and 44a can be detached from the lock grooves 45a and 46a. As described above, when the actuators 47 and 48 are operated, the lock mechanisms 45 and 46 according to the present embodiment are unlocked, and the seat surface portion 13 can be rotated in the storage position direction or the use position direction. The actuators 47 and 48 are attached to an actuator bracket 52 fixed to the columnar portions 11 a and 11 b of the frame portion 11. In the illustrated embodiment, the actuators 47 and 48 and the wires 49 and 50 constitute electric unlocking means. The actuators 47 and 48 in the illustrated embodiment are configured to pull the wires 49 and 50 by a motor and a reduction gear mechanism, but as an electric lock release means, a mechanism that pulls the wires 49 and 50 by an electromagnetic plunger can be used. .
[0012]
Gas springs 53 and 54 are connected between the striker brackets 43 and 44 and the bracket 51 fixed to the columnar portions 11 a and 11 b of the frame portion 11. The gas springs 53 and 54 are configured to have the longest overall length in a no-load state. In this embodiment, the length of the gas springs 53 and 54 is increased when the seat surface portion 13 is in the storage position, and the gas springs 53 and 54 are compressed when the seat surface portion 13 is pulled out. That is, since the gas springs 53 and 54 are configured to urge the seat surface portion 13 from the use position to the storage position, when the seat surface portion 13 is pulled from the storage position to the use position, the gas springs 53 and 54 The force for compressing the gas in the cylinder is necessary, but the speed was controlled from the use position to the storage position by the expansion force of the compressed gas in the cylinder of the gas springs 53 and 54 and the gas movement restriction. The seat portion 13 automatically returns to the storage position by the extension operation. The gas springs 53 and 54 include shafts 43b and 44b formed in the striker brackets 43 and 44 and shafts 51a implanted in the brackets 51 in shaft holes formed in the tip portions of the cylinder part and the piston part. , 51a is rotatably fitted.
[0013]
The seat surface portion 13 is locked by the storage position lock 46 at the storage position, and locked by the use position lock 45 at the use position, and is prevented from moving to the other position at each position. When the actuator 48 is operated and the storage position lock 46 is unlocked in the locked state at the storage position, the seat surface portion 13 can be pulled out by the passenger by hand, but the gas spring is prevented from falling from the storage position. 53 and 54. The passenger pulls out (rotates) the seat portion 13 to the use position against the urging force of the gas springs 53 and 54. When the seat surface portion 13 is rotated to the use position, the stopper 33a of the bracket 33 abuts against the stoppers 41b and 42b and further pulling is prevented, and at the same time, the strike pin 43a is locked to the use position lock 45. Therefore, even if the hand is released, the seat surface portion 13 does not return to the storage position direction. The stoppers 41a and 42b are formed so as to be capable of adjusting the positions of the abutting ends that come into contact with the stoppers 33a and 33a, and the inclination angle of the seat surface portion 13 can be adjusted by adjusting the positions of the stoppers 41a and 42b.
The storage position lock 46 is configured such that when the lock is released by the actuator 48, the lock mechanism does not operate until the use position lock 45 is released by the actuator 47. According to this configuration, in the seat-usable state, the passenger releases his / her hand while pulling out the seating surface portion 13 and is not locked even when the seating surface portion 13 returns to the storage position, so that the seating surface portion 13 can be pulled out again. become.
[0014]
When the actuator 47 is operated in this use position and the lock of the use position lock 45 is released, the seat surface portion 13 rotates in the storage position direction due to the extension force of the gas springs 53 and 54. And when it rotates to a storage position, strike pin 44a is latched by storage position lock 46, and seat surface part 13 is locked so that it cannot pull out from a storage position. Incidentally, the rotation of the past the stowed position, the strike pin 44a abuts against the Okuen portion of the locking grooves 46a, and the bearing surface for the seat cushion 32 is also restricted by abutting the back sliding cushions 62.
In the illustrated embodiment, the use position lock 45 is provided on the left side of the retractable seat 10 and the storage position lock 46 is provided on the right side .
[0015]
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. 4, 5 and 6. In the present embodiment, the lock mechanism at the use position is mounted on the left side of the retractable seat 10, and the lock mechanism at the storage position is mounted on the right side. 4 shows the structure on the left side of the retractable seat 10, and FIGS. 5 and 6 show the structure on the right side of the retractable seat 10.
[0016]
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 is pivotally supported by shafts 63 and 63 provided on the column portions 11a and 11b of the frame portion 11 at upper ends of the left and right outer surfaces thereof.
[0017]
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. When the seat frame 31 is in the use position, the backslid frame 61 is held in a use state in which the lower end protrudes and is inclined at a predetermined angle from the vertical direction (see FIG. 4). When rotated in the storage position direction, the lower end portion rotates rearward and is held in a storage state substantially perpendicular to the floor surface in the storage state (see FIG. 5). 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.
[0018]
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 support | pillar part 11a, 11b of the frame part 11 via the armrest shaft 73 fixed to the outer surface of the seat of the armrest frame 71 so that rotation is possible.
[0019]
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 striker brackets 43 and 44 are connected by link rods 75 and 75, respectively. When the seat frame 31 is in the use position, the armrest frame 71 is pulled out of the storage position by the link rods 75 and 75 and held in a use state substantially horizontal to the floor surface as in the seat frame 31 (FIG. 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 when the rear end portion rotates downward and the front end portion rises (see FIG. 5). 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 interlocking shafts 43b and 44b planted in the striker brackets 43 and 44. Furthermore, the link rod 75 is formed so that the length can be adjusted, and the angle of the armrest frame 71 can be adjusted by adjusting the length.
[0020]
The storing and withdrawing operations of the retractable seat 10 will be further described with reference to an embodiment of the remote control system shown in FIG. The actuators 47, 48 are 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. In other words, when the switches SW1 and SW2 are turned on by the driver, the conductor, etc., the control circuit 81 detects this, and energizes the actuators 47 and 48 via the drive circuit 83 to supply the use position lock 45 and the storage position. The lock 46 is released. The operation during use and storage is as follows.
[0021]
When the use switch SW <b> 1 is turned on, the control circuit 81 energizes the actuator 48 to release the storage position lock 46, and turns on a lamp indicating that the use lamp 23 can be used. The availability display informs the passenger that the seat surface portion 13 is pulled out and can be seated.
A passenger who sees the lighting of the usable lamp of the usability lamp 23 can pull out the seat portion 13 and sit down. In conjunction with the withdrawal of the seat surface portion 13, the backslider portion 15 and the armrest portion 17 move to the use position. Further, when the seat surface portion 13 is pulled out to the use position, the use position lock 45 is actuated to prevent the seat surface portion 13 from returning to the use position.
[0022]
On the other hand, when the storage switch SW2 is turned on, the control circuit 81 energizes the actuator 47 to release the lock of the use position lock 45, and turns on a lamp that indicates that the use is not possible and is displayed on the availability lamp 23. This display allows the passenger to know that the seat portion 13 cannot be pulled out.
[0023]
Although FIG. 7 shows a configuration for a set of retractable seats 10, a switch that can operate the actuators 47, 48 of all the retractable seats 10 of all the vehicles in one train at the same time is usually used. 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.
[0024]
Furthermore, a storage and use sensor is provided to detect that the seat surface portion 13 is in the storage position and the use position, or that the use position lock 45 and the storage position lock 46 have changed to the locked state, and the storage position lock 46 is released. When the use availability indicator lamp 23 is turned on, the availability indicator lamp 23 is extinguished when the use sensor detects it, and the use position lock 45 is released to disable the use. Is displayed by the usability indicator lamp 23, it is possible to save power by turning off the usability indicator lamp 23 when the storage sensor detects it. If the use state indicator lamp of the retractable seat 10 is configured to light only when the retractable seat 10 is in the retracted state and is usable, it is possible to reduce the number of members and save power. Also, by providing the control device with a display means for displaying the detection status of each sensor, the crew can monitor the usage status or abnormality in an integrated manner.
[0025]
Further, when the seat surface portion 13 of the present embodiment returns from the use position to the storage position, the seat surface portion 13 returns at a speed controlled by the elastic restoring force of the gas springs 53 and 54 and the flow restriction of the gas. Even if a load or the like is sandwiched between the backsliding portion 15 and the seat surface portion 13 is prevented from returning to the storage position, the seat surface portion 13 is driven only by the elastic pressure of the gas springs 53 and 54. Therefore, the gas springs 53 and 54 are not damaged, and the member receiving the load by the gas springs 53 and 54 is not damaged. The gas springs 53 and 54 are not limited to the illustrated embodiment. In short, the seat surface does not spring up like the spring alone, and the seat surface portion can be rotated to the storage position at a predetermined low speed. Any elastic biasing means capable of adjusting the speed may be used.
[0026]
【The invention's effect】
As is apparent from the above description, according to the present invention, in a retractable seat that can be moved between the storage position and the use position, when the seat surface moves to the use position, it is locked by the use position lock mechanism, and the lock is electrically operated. It can be released by the lock release means, and when released, the seat surface portion is moved from the use position to the storage position by the gas spring means, so that the operation for setting the seat surface portion to the use state is easy. Further, according to the present invention, when the seat surface portion is stored, the seat surface portion is returned to the storage position by the gas spring means only by operating the electric unlocking means. Therefore, even if an external force that prevents the seat surface portion from moving works. The surface and gas spring means are not overloaded, and only the urging force of the gas spring means works, so that the seat surface part is not overloaded and there is no possibility of damaging these members. A safe and robust retractable seat can be provided by configuration and control.
[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.
4 is a side view of the vicinity of the columnar portion on the left side of the seat as seen from the direction of arrow IV in FIG.
FIG. 5 is a side view of the vicinity of the right columnar portion, showing the main structural member in the storage state of the railcar stowable seat partially cut along the cutting line VV in FIG. 2;
6 is a front view of FIG. 5 showing the main components of the retractable seat for the railway vehicle in a stored state.
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 42 Seat surface hinge bracket 41b 42b Stopper 43 44 Strike bracket 43a 44a Strike pin 43b 44b Interlock shaft 45 Use position lock 46 Storage position lock 45a 46a Lock groove 47 48 Actuator 49 50 Wire 52 Actuator bracket 53 54 Gas spring 61 Back slide frame 64 Back slide cushion 64 Link plate 71 Armrest Frame 72 Armrest cushion 73 Armrest shaft 74 Bracket 75 Link rod 81 Control circuit 83 Drive circuit SW1 Switch used SW2 Storage switch

Claims (1)

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;
A use position locking mechanism that locks the seat surface portion to the use position when the seat surface portion moves to the use position;
Electric unlocking means for unlocking the use position locking mechanism;
A storage position locking mechanism that locks the seat surface portion in the storage position when the seat surface portion moves to the storage position;
Electric unlocking means for unlocking the storage position locking mechanism;
Gas spring means for allowing the seat surface portion to rotate from the storage position to the use position and for biasing the seat surface portion from the use position to the storage position;
The use position lock mechanism is disposed on one side of the seat surface portion, and the storage position lock mechanism is disposed on the other side,
The electric lock release means, the storage position lock mechanism and the use position lock mechanism are connected by a wire,
Each of the use position lock mechanism and the storage position lock mechanism has a member provided on the seat surface portion side and a member provided on the seat frame side, and these members are used to rotate the seat surface portion. A vehicular retractable seat characterized by being a mechanism that engages with the vehicle.

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