JPH0784152B2 - Seat storage mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as an auxiliary seat by rotatably storing a seat between a storage position for storing a seat in a seat storage body and a use position protruding from the seat storage body. The present invention relates to a seat storage mechanism that enables

[0002]

2. Description of the Related Art In a railway vehicle or the like, in order to effectively utilize the space in the vehicle by increasing or decreasing the number of seats according to the difference in the number of passengers during the rush hour and during other busy days,
Normally, a seat storage mechanism is provided that stores a seat in the seat storage body and can rotate the seat to a use position protruding from the storage body. Then, at the time of commuting rush, since it is necessary to store the seat in the seat storage body so that it cannot be used, the seat is locked by the locking device while the seat storage body stores the seat by remote control. Further, when the passenger is seated, the locking device is unlocked by remote control so that passengers can freely use the seat. Therefore, when the passenger is seated, the passenger can freely pull out the seat from the seat storage body and use it as an auxiliary seat. If the passenger wants to store the seat in the seat storage mechanism, the seat is moved from the use position to the storage position. Since the spring material is biased against the weight like this, if you stand up from the seat, the seat will
It rotates naturally from the use position to the storage position.

[0003]

However, in the above-described seat storage mechanism, when the seat is in use, the seat is only held in the use by the weight of the user against the biasing force of the spring member. When the user stands up for a short time, the seat immediately rotates from the use position to the storage position, and when the user wants to sit down again, the seat has to be pulled out from the seat storage body, which is inconvenient. In addition, since the spring member always urges against the weight of the seat during use, there is a drawback in that the user is constantly forced and uncomfortable to sit on.

Therefore, there is a structure provided with a holding device so as to hold the seat in the use position against the urging force of the spring member. The holding device holds the seat in the use position very easily. When it is released, for example, when a person sitting in the seat gets up with a strong force,
Part of the legs of the calf or the like hits the lower part of the front end of the seat, and an external force may be applied in the direction of lifting the seat, and the small external force causes the holding function of the holding device to be released.

The present invention has been devised in order to solve the above-mentioned deficiencies, and an object thereof is, for example, in the number of passengers in a commuting rush hour and other free time in a railway vehicle or the like. Depending on the difference in the number of seats, the number of seats can be increased or decreased to make effective use of the space inside the vehicle, and when the vehicle is seated, passengers can freely use the seats and a holding device that holds the seats in the used position. However, it is to provide a seat storage mechanism in which its holding function is not released by a small external force.

[0006]

In order to achieve the above object, the seat storage mechanism of the present invention has the following structure. That is, the seat can be rotated between a storage position for storing the seat in an upright seat storage body and a use position protruding from the seat storage body, and the seat can be moved from the use position toward the storage position. It is urged by spring material against the weight of. Then, a locking device for moving or moving the first air cylinder so as to lock or unlock the seat at the storage position is fitted into or disengaged from a recess provided in the seat, and the seat is And a holding device having an actuating portion that is actuated by driving the second air cylinder so as to hold the spring member in the use position against the biasing force of the spring member. The actuating portion includes a hook-shaped engaging member, and the hook is actuated when the seat rotates between the stored position and the use position or when the seat is operated by driving the second air cylinder. The engagement member having a shape is fitted in or disengaged from an engagement member with a receiving portion provided in the seat.

It is preferable that the first and second air cylinders respectively provided in the locking device and the holding device are connected to a common air supply source.

Even if the seat is rotated from the use position to the storage position by a predetermined angle, the hook-shaped engagement member is fitted in the engagement member with the receiving portion, and the seat is moved from the use position. When rotating to the storage position beyond the above specified angle,
The hook-shaped engaging member may be disengaged from the engaging member with the receiving portion.

[0009]

In the seat storage body, the moving member is driven by the drive of the first air cylinder while the seat is stored.
The locking device is locked or unlocked by being fitted into or disengaged from the recess provided in the seat. Further, when the seat is rotated between the use position and the storage position, or when the actuating portion is actuated by the drive of the second air cylinder, the hook-like engaging member of the actuating portion is provided on the seat. The holding device holds or does not hold the seat in the use position against the biasing force of the spring member by being fitted into or disengaged from the engaging member with the receiving portion. As a result, when the hook-shaped engaging member is fitted in the engaging member with the receiving portion, for example, a person sitting in the seat rises up vigorously and a part of legs such as a calf lowers the front end of the seat. Even when the seat is hit, the hook-shaped engaging member cannot be easily disengaged from the engaging member with the receiving portion, so that the seat does not rotate from the use position to the storage position. When the seat manager wants to store the seat in the seat storage mechanism, the seat can be rotated from the use position to the storage position, or the actuating portion can be operated by driving the second air cylinder.
Since the hook-shaped engaging member is disengaged from the engaging member having the receiving portion, the seat is urged by the spring member to rotate to the storage position.

Also, since the first and second air cylinders respectively provided in the locking device and the holding device are connected to a common air supply source, the air supply source is used for the locking device and the holding device. It can be used effectively compared to the case where each is provided.

Further, even if the seat is rotated from the use position to the storage position by a predetermined angle, the hook-shaped engaging member is still fitted to the engaging member with the receiving portion. Even if the seated person pushes up the seat slightly when standing up, the hook-shaped engaging member does not easily disengage from the engaging member with the receiving portion, so the seat does not rotate from the use position to the storage position. . When the seat is rotated from the use position to the storage position over the predetermined angle, the hook-shaped engaging member is disengaged from the engaging member with the receiving portion, so that the seat is biased by the spring member. Rotate to the storage position.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a seat storage mechanism according to the present invention will be described below with reference to the drawings.

The seat storage mechanism 1 is provided, for example, on both sides of an entrance (not shown) of a railway vehicle or the like, and as shown in FIGS. 1 to 3, the seat storage body 2 is erected upright. The seat 3 with the cushion 3a is stored in the storage position inside. Further, since the shaft portion 4 attached to the lower front side inside the seat housing body 2 penetrates and supports the base portion of the seat 3, the seat 3 projects from the seat housing body 2 in the use position (see FIG. (See FIG. 2) and the storage position (see FIG. 2),
The shaft portion 4 is rotatable about the rotation center. A coil spring 5 wound around the shaft portion 4 is used as a spring material.
Urges the seat 3 against its weight so as to move from the use position to the storage position.

A backrest 6 is provided on the back side of the seat 3, and the backrest 6 is stored inside the seat storage body 2 in conjunction with the rotation of the seat 3 between the storage position and the use position. It reciprocates between the stored position (see FIG. 2) and the use position (see FIG. 3) appearing on the front surface of the seat storage body 2. That is, on the left and right upper sides of the back side of the backrest 6, upper side arm portions 7 whose lower parts are slightly bent forward are provided respectively, and similarly, on the left and right lower sides of the back side, the whole is Lower arm portions 8 that are bent in a substantially L shape are provided. The upper ends of the upper side arm portions 7 are rotatably attached to the brackets 9 attached to the support member W that is hung above the seat storage body 2 via pins 9a, and The lower ends of the upper arm portions 7 are provided on the back side of the backrest 6 and extend in the vertical direction.
0 is rotatably connected to pin 0 via a pin 10a. The lower end of each lower arm 8 is attached to the lower end (rear end) of the seat 3, and the upper end of each lower arm 8 is
On the back side protrusion 10 of the backrest 6 through the pin 10b,
It is rotatably connected. Therefore, when the seat 3 is rotated from the storage position to the use position, the upper arm portion 7 and the lower arm portion 8 push the backrest 6 from the use position to the front surface portion of the seat storage body 2, and When the seat 3 rotates from the use position to the storage position, the upper arm portion 7 and the lower arm portion 8 pull back the backrest 6 from the front surface portion of the seat storage body 2 to the storage position.

An elbow pad 11 is provided on one side of the seat housing body 2. The elbow pad 11 is interlocked with the seat 3 when the seat 3 is rotated between a storage position and a use position. 2 It reciprocates between a storage position (see FIG. 2) for storing inside and a use position (see FIG. 3) protruding from the seat storage body 2. That is, the elbow pad 11 is rotatable around the protrusion 11 a provided on the side of the backrest 6, and the elbow pad 1
The lower end (rear end) of 1 is rotatably connected to the upper end of the arm 12 whose lower part is slightly bent forward through a pin 12a, and the lower end of the arm 12 is , Seat 3
13 attached to the lower end side (rear end side) of the
Is rotatably connected via a pin 13a.
Therefore, when the seat 3 rotates from the storage position to the use position, the arm 12 pushes the elbow pad 11 from the storage position to the use position of the seat storage body 2, and the seat 3 moves from the use position to the storage position. When rotating, the arm part 12 pulls the elbow pad 11 back from the use position to the storage position.

Coil springs 14 are attached to the lower left and right sides of the back side of the backrest 6, respectively, and these coil springs 14 urge the backrest 6 from the use position toward the storage position. That is, the lower end of the coil spring 14 has the bracket 1 attached to the back side of the backrest 6.
5 is connected to pin 5 via a pin 15a. Further, the upper end of the coil spring 14 is attached via the pin 16a and the lower end of the arm portion 16 which is vertically foldable around the pin 16b, and the upper end of the arm portion 16 has a support member W.
The bracket 17 is attached to the bracket 17 via the pin 17a.

At the center of the back side of the backrest 6, a pair of dampers 18 for slowly retracting the backrest 6 from the use position to the storage position is attached. The upper ends of the dampers 18 are attached to the brackets 19 attached to the support member W via the pins 19a, and the lower ends of the dampers 18 are attached to the brackets 20b attached to the rear projections 20 of the backrest 6. , Via the pin 20a,
It is connected. Further, between the support member W and the base H,
Two frames 21 extending vertically are hung over,
A hook-shaped engaging member 40 described later and the like are attached to the lower ends of the frames 21.

On the upper side of the supporting member W, there is provided a locking device 23 for locking or unlocking the seat 3 in the storage position, and the locking device 23, as shown in FIG. It has a balance type structure that swings around the support shaft 24a. One end of the balance rod 25 is connected to the piston rod 27 of the first air cylinder 26, and the other end is connected to a pin 28 as a moving member that moves up and down. Therefore, when the piston rod 27 extends upward by supplying air to the first air cylinder 26, the tip of the pin 28 that interlocks with the piston rod 27 fits into the recess 29 provided at the upper end (front end) of the seat 3, Since the seat 3 is locked in the storage position, the seat user (passenger) cannot pull out the seat 3, the backrest 6 and the like from the storage position to the use position. In addition, when the piston rod 27 contracts downward by stopping the supply of air to the first air cylinder 26, the pin 2 that interlocks with the piston rod 27 contracts.
Since the tip of 8 is disengaged from the recess 29 and the seat 3 is unlocked in the storage position, the seat user uses the handle M (see FIG. 9) provided on the lower surface side of the seat 3 to seat the seat 3. The backrest 6 and the elbow rest 11 can be pulled out from the storage position to the use position.

Above the support member W, a holding device 30 for holding the seat 3 in a use position against the biasing force of the coil spring 5 is provided. As shown in FIG. 5, the holding device 30 is provided. , Air supply similar to the locking device 23
It has a balance-type structure that swings around the support shaft 31a of the support member 31 when stopped. Then, one end of the balance rod 32 is connected to the piston rod 34 of the second air cylinder 33.
, And the other end is connected to an actuating portion 35 that moves up and down. Therefore, when the piston rod 34 extends upward by supplying air to the second air cylinder 33, the operating portion 35 interlocking therewith moves downward, and the supply of air to the second air cylinder 33 is stopped. By doing so, when the piston portion 35 contracts downward, the operating portion 35 that interlocks with it moves upward.
For actuating the piston rods 27, 34, the first
Pipes P for air supply are connected to the second and second air cylinders 26, 33, respectively, and the first and second air cylinders 26, 26 are remotely operated through the pipes P.
It is possible to supply and stop air to 33. This pipe P has both cylinders 26 and 33.
The common air supply source is used to supply air, but the air supply sources do not necessarily have to be common.

As shown in FIGS. 6 to 8, the operating portion 35 includes a shaft member 36 that moves up and down in conjunction with the vertical movement of the piston rod 34, and a bracket 38 attached to the lower end of the shaft member 36. A rotating member 39 attached to the bracket 38 and the frame 21, a hook-like engaging member 40 attached to the bracket 38, and the hook-like engaging member 40 and the rotating member 39. And a torsion spring 41.

The bracket 38 has holes 38a on each side thereof.
And a shaft portion 38b fitted in these holes 38a.
Is a bush 39a provided on the rotating member 39 and a bush 40 provided above the hook-shaped engaging member 40.
The turning member 39 and the hook-shaped engaging member 40 are supported by fixing with a stop pin 40b in a state of penetrating a. Further, the shaft portion 21 fixed to the frame 21
The a is pierced through the bush 39b of the rotating member 39 and is fixed by the stop pin 39c, so that the frame 21 rotatably supports the rotating member 39 around the shaft portion 21a. The hook-shaped engaging member 40,
A protrusion 40c is provided at the center of the side surface facing the rotating member 39, and the rotating member 39 is a hook-shaped engaging member 40.
The projection 39d is provided at one end of the side surface facing the.
The torsion spring 41 is wound around the bush 39a, and each end of the torsion spring 41 has the protrusion 39d and the protrusion 40c.
It is hung on each.

When the shaft member 36 and the bracket 38 move from the upper side to the lower side, the rotating member 39 moves the shaft portion 21a.
Around (from the position indicated by the solid line to the position indicated by the phantom line in FIG. 6) so that the torsion spring 41 engages with the hook-shaped engaging member 40.
The hook-shaped engaging member 40 is rotated so as to separate from the U-shaped engaging member 42 serving as an engaging member with a receiving portion provided at the lower end (rear end) of the seat 3 (Rotate from the position indicated by the solid line to the position indicated by the virtual line in FIG. 6). On the contrary, when the shaft member 36 and the bracket 38 move from the lower side to the upper side, the rotating member 39 rotates around the shaft portion 21a (from the position of the imaginary line to the position of the solid line in FIG. 6), and the torsion spring 41 hooks. Since the hook-shaped engaging member 40 is not biased, the hook-shaped engaging member 40 rotates so as to fit into the U-shaped engaging member 42 (from the position indicated by the virtual line to the position indicated by the solid line in FIG. 6). Turn to).

Therefore, since the hook-shaped engaging member 40 is in a state of being fitted into the U-shaped engaging member 42 when the seat 3 is in the use position (position indicated by the solid line), The coil spring 5 is held in the use position against the biasing force of the coil spring 5. In addition, when the shaft member 36 and the bracket 38 move from the upper side to the lower side, or when the seat 3 rotates from the use position (the position indicated by the solid line) to the storage position (the position indicated by the virtual line), the hook-shaped engagement is performed. Since the combination member 40 rotates from the position indicated by the solid line to the position indicated by the phantom line and disengages from the U-shaped engagement member 42, the seat 3 is biased by the coil spring 5 and moves to the storage position. Further, the shaft member 36 and the bracket 38
When the seat 3 is in the upper position and the hook-shaped engaging member 40 is in the position of the solid line, when the seat 3 is rotated from the storage position (the position of the virtual line) to the use position (the position of the solid line), The engaging member 42 pushes up the hook-shaped engaging member 40,
It slides along the lower surface S and engages with the hook-shaped engaging member 40.

Even if the seat 3 is rotated by a predetermined angle from the use position (solid line position) to the storage position (virtual line position), the tip of the hook-shaped engaging member 40 is U-shaped. The seat 3 is in a state of being fitted in the U-shaped engaging member 42 only by being pushed by the engaging member 42, and further, the seat 3 is moved from the use position (solid line position) to the storage position (imaginary line position) by the predetermined angle. The tip of the hook-shaped engaging member 40 is disengaged from the U-shaped engaging member 42 only when the hook-shaped engaging member 40 rotates. As a result, the hook-shaped engaging member 40 does not disengage from the U-shaped engaging member 42 even if the seated person pushes up the seat slightly when the person sitting on the seat stands up.

Next, the operation of this embodiment will be described.

In the case of a commuting rush, the conductor of a railway vehicle operates the first air cylinder 26 of the locking device 23 by remote control so as to reduce the number of seats and increase the space inside the vehicle. By extending the rod 27 upward, the pin 28 is moved downward to lock the seat 3 in the storage position. In order to increase the number of seats and allow passengers to freely use the seats while sitting, the conductor or the like also remotely operates the first air cylinder 26 of the locking device 23.
Is operated to move the piston rod 27 downward to move the pin 28 upward to unlock the seat 3 in the storage position. At that time, the piston rod 3 of the holding device 30
4 expands and contracts in conjunction with the expansion and contraction of the piston rod 27 of the locking device 23, and in the unlocked state, the shaft member 36 and the bracket 38 of the operating portion 30 are at the upper position, so that the hook-shaped engaging member 40 is It is in a position where it is fitted into the U-shaped engaging member 42. In that state, when the seat 3 is pulled out from the storage position to the use position by using the handle M of the seat 3, the hook-shaped engagement member 40 is fitted into the U-shaped engagement member 42 provided in the seat 3, The seat 3, the backrest 6, and the elbow rest 11 are ready for use.

In this case, the seat 3 can be freely rotated between the use position and the storage position, and the hook-shaped engagement member 40 is provided on the U-shaped engagement member 42 provided in the seat 3.
Passengers can freely seat 3
Etc. can be used or stored. Then, even if the person sitting on the seat 3 stands up vigorously and a part of the leg of the calf or the like hits the tip of the seat, and an external force is applied in the direction of lifting the seat, the hook-shaped engaging member 40 is U-shaped. The seat 3 is held in the use position because it cannot be easily disengaged from the engagement member 42. When the conductor or the like wants to store the seat 3, the backrest 6, and the elbow pad 11 in the seat storage mechanism,
The second air cylinder 33 of the holding device 30 is operated by remote control so that the hook-shaped engagement member 40 is disengaged from the bracket 42, and the piston rod 34 of the second air cylinder 33 is extended upward to extend the piston member 34 of the operation portion 35 and the bracket. When 38 is moved to the lower position, the hook-shaped engaging member 40 and the U-shaped engaging member 42 are disengaged from each other, so that the seat 3 is biased by the coil spring 5 to rotate to the storage position.

The present invention is not limited to the above-mentioned embodiment, but various modifications can be made. For example,
The locking device may have any structure as long as the moving member that is connected to the piston rod of the air cylinder and moves can be fitted into or removed from the recess provided in the seat, and is not limited to the above shape. Further, the hook-shaped engaging member is not limited to the shape shown in the drawing, and the engaging member with a receiving portion may have any shape as long as it engages with the hook-shaped engaging member. good. Furthermore, what kind of structure the holding device has is that it has an operating portion that is operated by being connected to the piston rod of the air cylinder so as to hold the seat in the use position against the biasing force of the spring member. It may have a structure and is not limited to the above shape. Also,
A display device for indicating that the seat is locked by lighting or other means using characters or figures may be provided at the center of the upper surface of the seat housing body 2 or at any other place.

The seat storage mechanism according to the present invention can be implemented in a theater, a stadium, or the like, or a ship other than a railroad vehicle.

[0030]

As is clear from the above description, the seat storage mechanism according to the present invention has the following effects.

According to the seat storage mechanism of the first aspect, for example, in a railway vehicle or the like, since a locking device for locking or unlocking the seat at the storage position is provided, a manager such as a conductor Based on the will, the number of seats will be increased or decreased according to the difference in the number of passengers during the commuting rush hour and when other passengers are seated to effectively utilize the space in the vehicle. You will be able to use or store your seats freely. Further, since the holding device for holding the seat in the use position against the biasing force of the spring member is provided, despite the spring member always biasing against the weight of the seat, The seat occupants are comfortably seated because the seat user does not have to apply force. Also, if the manager such as the conductor wants to store the seat in the seat storage mechanism at the vehicle depot etc.,
The air cylinder is driven by remote control, etc., and the operating part operates based on the drive, so the hook-shaped engaging member disengages from the engaging member with the receiving part, and the seat is biased by the spring material and stored. Rotate to position. Therefore, the seat can be stored in the seat storage mechanism according to the intention of the administrator such as the conductor, which is excellent in usability. Further, when the seat rotates between the use position and the storage position, the hook-shaped engaging member of the operating portion is fitted into or disengaged from the engaging member with the receiving portion provided in the seat. , Even if a person sitting in the seat stands up vigorously and a part of the leg such as the calf hits the tip of the seat, the hook-shaped engaging member does not come off more easily than the engaging member with the receiving part, so hold it. The holding function of the device is not released and it becomes easier to use.

According to the seat storage mechanism of the second aspect, since the air cylinders respectively provided in the locking device and the holding device are connected to a common air supply source, the air supply source is locked. The air supply mechanism can be effectively used and the cost can be reduced as compared with the case where the device and the holding device are provided respectively.

According to the seat storage mechanism of the third aspect, even if the seat is rotated from the use position to the storage position by a predetermined angle, the hook-shaped engagement member fits into the engagement member with the receiving portion. Since the hook-shaped engaging member does not come off from the engaging member with the receiving portion even if the seated person is slightly pushed up when the person sitting on the seat stands up,
The seat does not rotate from the use position to the storage position. If the seat is to be stored in the seat storage mechanism, the seat can be rotated from the use position to the storage position beyond the predetermined angle,
Alternatively, when the actuating portion is actuated by the movement of the piston portion, the hook-shaped engaging member is disengaged from the engaging member with the receiving portion, so that the seat is biased by the spring member to rotate to the storage position. Therefore, despite the careless movement of the seat user,
It is possible to keep the seat in the use position, and it is easy to use.

[Brief description of drawings]

FIG. 1 is a partially cutaway rear view schematically showing an internal mechanism of an embodiment of a seat storage mechanism according to the present invention.

[Fig. 2] With the seat stored in the seat storage body,
It is a side view which partially fractures | ruptures and shows an internal mechanism schematically.

FIG. 3 is a side view schematically showing a partially cutaway internal mechanism with a seat pulled out.

FIG. 4 is a first view of the locking device of this embodiment.
FIG. 4 is an enlarged front view showing the periphery of the air cylinder of FIG.

FIG. 5 is a second view of the holding device of this embodiment.
FIG. 4 is an enlarged front view showing the periphery of the air cylinder of FIG.

FIG. 6 is an enlarged side view showing the periphery of an operating portion provided in the holding device of this embodiment.

FIG. 7 is a rear view showing, on an enlarged scale, the periphery of an operating unit provided in the holding device of this embodiment.

8 is an enlarged end view taken along line AA in FIG.

FIG. 9 is a perspective view showing the outer appearance of the seat storage mechanism of this embodiment.

[Explanation of symbols]

1 seat storage mechanism 2 seat storage
3 Seat 23 Locking Device 26 First Air Cylinder 28 Pin (Moveable Member) 29 Recess 30 Holding Device 33 Second Air Cylinder 35 Working Part 40 Hook-like Engaging Member 42 U-shaped Engaging Member (with Receiving Part) Engaging member)

Claims (3)

[Claims] 1. A seat is made rotatable between a storage position for storing a seat in an upright seat storage body and a use position protruding from the seat storage body, and the seat is moved from the use position to the storage position. Further, in the seat storage mechanism in which the spring material is urged against the weight of the seat, in order to lock or unlock the seat in the storage position, the first
The moving member that is driven by the drive of the air cylinder is a locking device that fits into or disengages from the recess provided in the seat, and holds the seat in the use position against the biasing force of the spring member. And a holding device having an actuating portion that is actuated by driving the second air cylinder, the actuating portion including a hook-shaped engaging member,
When the seat rotates between the storage position and the use position, or when the seat is operated by the drive of the second air cylinder, the hook-shaped engaging member is provided with a receiving portion provided in the seat. A seat storage mechanism which is fitted into or disengaged from the engaging member of. 2. The first and second air cylinders respectively provided in the locking device and the holding device,
The seat storage mechanism according to claim 1, wherein the seat storage mechanism is connected to a common air supply source. 3. Even if the seat is rotated from the use position to the storage position by a predetermined angle, the hook-shaped engagement member is still fitted to the engagement member with the receiving portion, and the seat is used. The seat storage according to claim 1 or 2, wherein the hook-shaped engagement member is disengaged from the engagement member with the receiving portion when rotated from the position to the storage position over the predetermined angle. mechanism.