JPH0326050Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a structure for changing the direction of a multi-person seat in a track vehicle.

(b) Conventional technology Conventionally, the seat structure of Shinkansen has been as follows.

That is, on one side of the vehicle floor, two-person seats are arranged at a constant distance from front to back, and on the other side of the same floor, three-person seats are arranged at a constant distance from front to back.
A passage is formed between the two-person seat and the three-person seat.

The two-person seat can be rotated or flipped 180 degrees horizontally on the spot, making it possible to change the front-back direction of the seat.

Therefore, in the case of two-seater seats, passengers can be seated facing the direction of travel of the Shinkansen at any time, and can also be seated facing the seat adjacent to the front or rear, if necessary.

This is because, in the case of a two-seater seat, the left-right width and front-rear width are narrower than the distance between adjacent seats and the distance between the seats and the side walls, so it is possible to change the front-back direction by horizontal rotation. .

(c) Problems to be solved by the invention However, in the case of a three-person seat, the width of the seat is wider than the distance between the adjacent seats, and if you try to rotate it horizontally on the spot, the width of the seat is wider than the distance between the adjacent seats. Because it interferes with the front and rear seats and makes it impossible to change the direction forward or backward, it is fixedly installed facing a certain direction.

For this reason, in the case of such a three-person seat, it is sometimes necessary to sit facing the direction opposite to the direction of travel, which causes problems such as receding scenery and making the driver feel unwell.

(d) Means for solving the problem Therefore, in the present invention, in a railway vehicle in which multiple seats of the same shape are arranged in the front and rear, the multiple seats are mounted on the floor of the vehicle with a lifting mechanism and a rotation mechanism. The elevating mechanism allows the multi-person seat to be raised to a position higher than the upper surface of the seat of the seat adjacent to the front and rear, and the rotating mechanism allows the multi-person seat to be raised by 180 degrees on a horizontal plane. It is an object of the present invention to provide a structure for changing the longitudinal direction of a multi-person seat in a track vehicle, which allows the seat to be reversed by rotating once.

(e) Action When flipping a multi-seat seat 180 degrees, the fixed body is operated by pedaling to release the fixation of the lifting mechanism, and the front and rear cross links forming the lifting mechanism are activated by the link lifting biasing spring. When the multi-person seat is raised to a higher position than the seat portions of adjacent seats in the front and rear, it can be stopped by the cylinder.

Moreover, at this time, the roller attached to one end of the front and rear cross links rolls along the lower guide rail of the fixed machine frame, and the roller attached to the upper end of the other side of the front and rear cross links rolls on the seat. While rolling along the upper guide rail of the support frame, the lower end of the other side of the front and rear cross links is pivoted to the front and rear frame of the fixed machine frame, and the upper end of one side of the front and rear cross links is attached to the seat support frame. Because of the pivot support, the multi-person seat attached to the front and rear cross links via the seat support frame can be offset in a direction away from the adjacent wall surface by a certain width.

Therefore, when such a multi-person seat is not raised and is turned 180 degrees through the rotation mechanism, the seat can be easily turned over without colliding with the seat of an adjacent seat or the wall. can be done.

In addition, the front and rear cross links that raise the multi-person seat to a higher position than the seats of the adjacent seats can be stored between the fixed aircraft frame and the seat in the lowered and retracted state. In addition, the fixed machine frame and the seat can be arranged as close as possible to the adjacent wall surface, and a wide passage space within the rail vehicle can be secured.

(f) Effects According to the forward-returning structure of the present invention, a multi-person seat can be turned forward and backward as necessary, so the same convertible structure can be used, for example, as a three-person Shinkansen seat. This will allow the three-seater seat to be freely changed back and forth, which eliminates the problems that occur in the past, such as people feeling sick when seated in the opposite direction to the direction of travel. effective.

(G) Example The example of the present invention will be explained in detail based on the drawings.
A shown in Fig. 1 is a three-person seat as an example of a multi-person seat, B is a floor surface of a track vehicle on which the three-person seat A is mounted, and C is a wall surface. There is.

The three-person seat A is provided with a longitudinal direction changing mechanism D interposed between it and the vehicle floor surface B, and the mechanism D is a fixed machine frame fixedly placed on the vehicle floor surface B. 1, and a lifting mechanism 2 provided on the fixed machine frame 1.
and a rotating mechanism 3 attached to the lifting mechanism 2.

Each machine frame and mechanism that constitute the forward/backward direction change mechanism D will be described in detail below.

That is, as shown in FIGS. 1 to 5, the fixed machine frame 1 has front and rear horizontal frames 5, 5' horizontally mounted between the front and rear upper ends of the left and right machine frames 4, 4', and , 5', lower guide rails 6 each having a C-shaped cross section,
6 are attached so that the openings 6a, 6a face inward and face each other (see FIG. 3).

The guide rails 6, 6 are connected to a lifting mechanism 2, which will be described later.
It guides the lower left end portions of the front and rear cross links 7, 7' so as to be slidable laterally in the left and right directions, and also restricts the range in which the lower left end portions can slide laterally in the left and right directions.

Further, a fixed body 8 for fixing the lifting mechanism 2 to the fixed machine frame 1 in a downwardly contracted state is attached to the right machine frame 4' of the fixed machine frame 1. A locking part 8a for locking the seat support frame 9 of No. 2 is provided, a locking release pedal 8b is provided at the other end, and the midway portion is pivoted to the right machine frame 4' of the fixed machine frame 1.
At the same time, the locking portion 8a is biased toward the side where it engages with the seat support frame 9 by a spring or the like.

A rotation regulating body 24 that regulates the rotation of the three-person seat A in the lowered state is protruded from the left machine frame 4 of the fixed machine frame 1, and the opening of the regulating body 24 is directed inward. The regulating body 2 is formed into a U-shaped cross-section facing the
A locking protrusion 25 provided on the lower machine frame 18 of the three-person seat A engages with the three-person seat A, thereby regulating the rotation of the three-person seat A.

In addition, the lifting mechanism 2 has pivots 1 intersecting in the middle.
The front and rear cross links 7, 7' which constitute a pantograph mechanism by 0, a link upward biasing spring 26 which raises and lowers the links 7, 7', and the links 7, 7'.
Cylinder 1 which regulates the rise at a constant height of 7'
1, and a seat support frame 9 suspended horizontally between the upper ends of the links 7 and 7'.

Then, rollers 12, 12 are attached to the lower left ends of the front and rear cross links 7, 7'.
12 is loosely fitted into the lower guide rails 6, 6 of the fixed machine frame 1, such that the links 7, 7'
The lower left end portions of the links 7 and 7' are slidable laterally to the left and right, and the lower right end portions of the links 7 and 7' are connected to the right side portions of the front and rear machine frames 5 and 5' of the fixed machine frame 1 by a pivot 13.

Moreover, the rotating shaft 12' of the roller 12 and the pivot portion 1
3, the above-mentioned link upward biasing spring 2
6 is interposed therebetween, so that the front and rear cross links 7, 7' can be raised by the biasing force of the spring 26.

In addition, the left upper end of the front and rear cross links 7, 7' is
A pivot 14 is connected to the left side of the seat support frame 9, and
The right upper end portions of the links 7 and 8 are connected to upper guide rails 15 and 15 provided on the right side of the seat support frame 9 via rollers 12' and 12' so as to be slidable laterally. The upper guide rails 15, 15, like the lower guide rails 6, 6, have front and rear cross links 7,
It guides the upper right end of 8 so as to be slidable laterally to the left and right, and also restricts the range of horizontal lateral sliding of the upper right end.

Further, the cylinder 11 has its base end connected to the central portion of the fixing machine frame 1 with a pivot 16, and its distal end connected between the left upper portions of the front and rear cross links 7 and 8 with a pivot 17.

The cylinder rod 11a of the cylinder 11 is extended in conjunction with the rise of the front and rear cross links 7 and 7', and the links 7 and 7' cause the seat support frame 9 to rise a certain height H from the vehicle floor surface B. When the rod 11a rises to this point, the extension of the rod 11a is stopped and the upward movement of the links 7, 7' is restricted.

This constant rising height H is higher than the height H' of the seat portion 21 of the three-person seat A, which will be described later.

Moreover, since the upper right end and the lower left end of the front and rear cross links 7, 7' are capable of sliding horizontally on the upper and lower guide rails, the seat support frame 9 that is raised via the links 7, 7' is on the right side. It is offset upward to ensure a constant width W from the left wall surface C.

The constant width W is determined by the longitudinal width of the three-person seat A, and is set as an effective width that does not interfere with the wall surface C when the seat A is horizontally rotated.

Further, the lifting mechanism 2 is shortened against the urging force of the link lifting urging spring 26, and the seat support frame 9 is shortened.
By locking with the locking portion 8a of the fixed body 8, the lowered state can be maintained.

Further, the fixing mechanism 3 is interposed between the center part of the seat support frame 9 and the center part of the lower machine frame 18 of the three-seat seat A, and the fixing mechanism 3 is a lower ring 3a fixed to the seat support frame 9. and an upper ring 3b fixed to the lower machine frame 18 are configured as a normal fixing mechanism in which the upper ring 3b is rotatably fitted and supported via a bearing 3c.

In FIGS. 1 and 2, 19 and 19' are left and right receivers provided on the left and right sides of the seat support frame 9.
9, 19' lower machine frame 18 of three-seater seat A.
The seat A is supported stably by receiving the left and right sides of the seat A.

In addition, in FIG. 4, 27, 27' are receiving bolts for receiving the rotating three-seater seat A, and the bolts 27, 27' are attached to the left front and rear of the seat support frame 9 through stays 28 to adjust the forward and backward movement. The locking pieces 29, 29' attached to the lower machine frame 18 of the three-person seat A can be freely attached to the bolts 27, 27' to adjust their positions.

In the forward/backward direction changing mechanism D of this embodiment, the rotating mechanism 3 is attached to the lifting mechanism 2, but the lifting mechanism 2 may be attached to the rotating mechanism 3 on the contrary.

In addition, the three-person seat A has three one-person seats 22, each consisting of a backrest 20 and a seat 21, arranged side by side in the horizontal direction, as shown in Fig. 1, and serves as an integrated three-person seat. 23 indicates an armrest part.

In FIG. 5, H' indicates the height of the seat portion 21 from the vehicle floor surface B.

Further, in FIG. 6, P indicates the center of rotation of the three-person seat A when it is at its lowest position, and P' indicates the center of rotation when the seat A is at its highest position.

The embodiment of the present invention is constructed as described above, and the operation of changing the front and back direction of the three-person seat A will be explained below based on FIGS. 5 and 6.

That is, in Fig. 5, three-person seat A
When carrying out the work of changing the direction forward and backward so that the seats can be seated facing rightward, the leftmost three-seater seat A, which can be seated facing rightward, is left as is.
Each of the second and subsequent seats A from the left, which are in a state where they can be seated facing left, are sequentially turned to the right.

First, when raising the second three-seater seat A from the left, the fixing release pedal 8b of the fixed body 8 is
When the seat A is unlocked by stepping on the button, the seat A is raised to a height higher than the height H' of the seat part 21 by the front and rear cross links 7, 8 of the lifting mechanism 2 and the link lifting biasing spring 26. It rises to a certain height H at a certain position while being separated by a certain width W from the lateral wall surface C.

Next, as shown in FIG. 6, the raised offset three-person seat A is horizontally rotated 180 degrees about the rotation center P' by the rotation mechanism 3.

At this time, the three-seater seat A is such that the seats 21, 21 of the three-seater seats A, A, which are adjacent to each other in the front and back, are located on the side of the three-seater seat A that changes direction, and each seat 21,
21, and the distance from the lateral wall C is a certain width W, so even if the seat A is horizontally rotated, the same The seat A does not interfere with the adjacent seats A, A or the wall C.

Finally, the seat A, which has been horizontally inverted 180 degrees, is pressed vertically downward and lowered, and the fixed body 8
The seat support frame 9 is locked and fixed by the locking portion 8a.

The fore/aft direction change operation in this procedure is sequentially performed for the three-person seats A starting from the third seat from the left.

[Brief explanation of drawings]

FIG. 1 is a front view showing a structure for changing the forward and backward directions of a multi-person seat according to the present invention. FIG. 2 is an enlarged front view showing the front-rear direction change structure. FIG. 3 is a sectional view taken along the line -- in FIG. 2. FIG. 4 is an explanatory plan view of the seat support machine frame. FIG. 5 and FIG. 6 are explanatory diagrams for changing the front and back direction of a multi-person seat. A...3-seater seat, B...vehicle floor, C...
Wall surface, D... Fore-and-aft direction change mechanism, 1... Fixed machine frame, 2... Lifting mechanism, 3... Rotating mechanism.

Claims (1)

[Scope of claim for utility model registration] In a track vehicle in which multiple seats of the same shape in the front and rear are arranged, a lifting mechanism 2 for raising and lowering the multiple seats on the vehicle floor surface B.
and a rotation mechanism 3, and the elevating mechanism 2 is capable of raising the multi-person seat to a position higher than the upper surface of the seat of the seat adjacent to the front and back, and is separated from the adjacent wall surface by a certain width W. The rotation mechanism 3 can be offset in the direction of
This is a front-rear direction change structure for a multi-person seat in a track vehicle that allows the seat to be reversed by rotating 180 degrees, and a pantograph mechanism is constructed by pivoting an elevating mechanism 2 in a cross-like manner at its midpoint. Front and rear cross links 7,
7', a link upward biasing spring 26 that raises and lowers the links 7 and 7', and a cylinder 11 that restricts the rise of the links 7 and 7' to a certain height.
It is formed from a seat support frame 9 suspended horizontally between the upper ends of the links 7, 7', and rollers 12, 12 are attached to the lower end of one side of the front and rear cross links 7, 7', and the rollers 12, 12 are moved up and down. The links 7 and 7' are loosely fitted in the lower guide rails 6 and 6 of the fixed machine frame 1 that supports the mechanism 2 so as to be able to roll freely.
The lower end of one side is slidable laterally, while the lower end of the other side of the link 7, 7' is pivoted 13 to the front and rear machine frames 5, 5' of the fixed machine frame 1. Rotating shaft 12' and pivot 1
3, the link upward biasing spring 26
The upper end of one side of the front and rear cross links 7, 7' is pivoted to one side of the seat support frame 9. While supporting 14,
The upper end of the other side of the links 7, 7' is connected to the seat support frame 9.
The multi-person seat attached to the seat support frame 9 is linked to the upper guide rails 15, 15 provided on the other side via rollers 12', 12' so as to be slidable laterally, and is linked to the upward movement. A plurality of track vehicles characterized in that the fixed body 8 is capable of offset operation and is attached to the fixed frame 1 to fix the elevating mechanism 2 to the fixed frame 1 in a downwardly contracted state and to release the fixation by pedal operation. A structure that changes the direction of the passenger seat back and forth.