Folding seat for a vehicle and vehicle having said folding seat

Abstract

The utility model relates to a folding seat (1) for a vehicle, which comprises a seat plate (2) capable of pivoting around a rotation axis (3) between a use position and a vertical position, a heavy object (5) is movably arranged in the seat plate (2) and can move by means of a force driving device (4), and the force driving device (4) drives the seat plate (2) to rotate around the rotation axis (3). In a first end position of the weight, the seat plate is automatically pivoted into a use position by the influence of gravity, and in a second end position of the weight, the seat plate is automatically pivoted into a vertical position by the influence of gravity.

Description

Technical Field

[0001] The utility model relates to a folding seat for being arranged in a vehicle, in particular a rail vehicle. Background Art

[0002] The interior space of a passenger-carrying rail vehicle is usually equipped with seat facilities, and these seat facilities are designed in different ways according to the total expected number of passengers and the frequency of passenger transfer. For rail vehicles used for long-distance transportation, passenger seats are usually arranged in rows and designed as seat groups each including one to three seats. Older vehicles are also constructed in a carriage structure, in which usually six seats are arranged in two groups facing each other in the carriage. Vehicles for short-distance transportation, such as trams or subways, mostly have single-seat seats, double-seat seats or seat groups with four seats. For vehicles with a particularly high total number of passengers, standing positions are provided more than seats and the seats are usually arranged longitudinally along the outer wall. Thus, there is a particularly large standing area in the passenger cabin, so that the passenger density can be significantly increased compared with vehicles mainly equipped with seats. If this is still not enough for the total expected number of passengers, these longitudinally arranged seats can be designed as folding seats, which are folded up during peak passenger volume times and the space thus released can be used more efficiently for standing passengers. Here, a seat board that can pivot around a horizontal axis is usually arranged on the inner side of the outer wall. Here, the folding seat can be designed in the style of folding seats commonly used in cinemas and theaters, so that the seat board automatically pivots to the vertical position under the influence of gravity or a spring and can be flipped down by the passenger for use. If this should be prohibited at a specific time, the folding seat can also be latched in the vertical, retracted position of the seat board, thus expanding the space for standing passengers. In known solutions, this process must be performed manually. It is feasible to perform the flipping process by means of a force drive device, but a highly consuming transmission mechanism has to be used therein. There is no known drive device for a folding seat in the prior art that can easily perform the flipping process, especially without the force action transmission from the vehicle body to the seat board. Summary of the Utility Model

[0003] Therefore, the task of the utility model is to provide a folding seat, the seat board of which can move in two directions between a stationary position and a use position by means of a force drive device.

[0004] This task is solved by a folding seat according to the utility model.

[0005] According to the basic concept of the present utility model, a folding seat for a vehicle is described, which includes a seat plate that can pivot between a use position and a vertical position about a rotation axis. A heavy object is movably arranged inside the seat plate, and the heavy object can be moved by means of a force driving device. The seat plate automatically pivots to the use position under the influence of gravity in the first final position of the heavy object, and the seat plate automatically pivots to the vertical position under the influence of gravity in the second final position of the heavy object.

[0006] Thus, the advantage that can be achieved is that the automatic movement of the seat plate can be caused. Particularly advantageously, this movement is achieved by the movement of its center of gravity caused by the movement of the heavy object, and thus the force driving device acting from the outside of the seat plate is omitted. Only the electric energy needs to be transmitted into the interior of the seat plate, and no transmission mechanism or force transmission mechanism such as a rope traction device or a rod is required. Thereby, the wear of these mechanisms or the damage that often occurs deliberately, for example, in public transportation means, is also excluded.

[0007] Advantageous design solutions include:

[0008] Support structures are provided on both sides of the seat plate. The seat plate is pivotally fastened to the support structures, and the support structures bear the forces acting on the seat plate. The support structures are configured to be fastened to a vertical wall; the force driving device is configured as an electric motor, and electric wires are guided along the rotation axis to the motor; the heavy object can be moved along a guiding portion by means of a rope traction device; the heavy object can be moved by means of a threaded rod; a locking device is provided, which prevents the seat plate from being manually pivoted to the use position; the locking device automatically takes effect when the vertical position of the seat plate is reached and is automatically released during the movement of the heavy object in the direction of its first final position; the locking device includes at least one receiving portion configured to be arranged at a vertical wall, wherein in the locked state of the seat plate, at least one pin moves from the seat plate into the receiving portion; the locking device includes at least one receiving portion arranged at the support structure, wherein in the locked state of the seat plate, at least one pin moves from the seat plate into the receiving portion; the movement of the pin is caused by a Bowden cable by means of the force applied by the force driving device; the movement of the pin is caused by a push-pull rod by means of the force applied by the force driving device; the movement of the pin is caused by an elastic mechanism by means of the force applied by the force driving device; a locking device is provided, which locks the seat plate in its use position; the seat plate is configured as a single-seat seat; the seat plate is configured as a multi-seat seat.

[0009] According to the present utility model, in a seat plate that can pivot about a horizontal axis of rotation, it is provided that the seat plate can pivot between a horizontal use position and a substantially vertical position. In the horizontal use position, the seat plate is suitable for sitting use, and in the substantially vertical position, the seat plate is not suitable for sitting use. In the use position, the seat plate is supported by suitable end stops such that the weight acting on it during use can be introduced into the structure in which the seat plate is arranged.

[0010] A heavy object is movably arranged inside the seat plate, and the heavy object can move along a specific path by means of a force driving device. By this movably supported heavy object, the position of the center of gravity of the seat plate can be moved within a specific range. Importantly, the axis of rotation is arranged such that within a specific range of the movement path of the heavy object, the center of gravity of the seat plate is located between the front edge of the seat plate and the axis of rotation. Thereby, a torque acting on the seat plate is formed along this movement path, and this torque pivots the seat plate in the direction of its use position until the use position is reached and further movement is blocked by the end stop.

[0011] If the heavy object is in another section of its movement path, the center of gravity of the seat plate is located between the rear edge of the seat plate and the axis of rotation. Thereby, a torque acting on the seat plate is formed, and this torque pivots the seat plate in the direction of its vertical, i.e., stowed position.

[0012] In this way, the seat plate can not only be pivoted into the use position, but also into the stowed position, and can be pivoted into the corresponding other final positions arbitrarily frequently.

[0013] The folding seat according to the present utility model can be equipped with a support structure. By means of the support structure, the seat plate is connected to an arbitrary structure, usually the vehicle body, and the support structure bears the force acting on the seat plate and transfers it to this structure. These support structures include suitable pivot bearings for realizing the pivoting movement of the seat plate and can be equipped with stops for limiting the pivot angle such that the seat plate is prevented from further pivoting movements beyond the use position in its use position. Here, the support structure can be configured for releasable fastening, especially threaded fastening, on the structure of the vehicle body, especially on the vertical wall of the vehicle body. Particularly advantageously, the support structure is configured such that it enables the transmission of electrical energy to the force driving device inside the seat plate. Here, this transmission can be carried out through the inside of the pivot bearing such that this transmission is not visible and cannot be accessed by unauthorized persons, such that deliberate damage to the electrical wires is also not possible.

[0014] The force drive device for moving heavy objects can advantageously be configured as an electric motor because this form of energy is usually available in vehicles and has advantages over other forms of energy, such as compressed air or hydraulic systems, in terms of the adjustability and flexibility of conveyance and also enables a significantly less expensive drive device to be achieved. The power requirement for moving heavy objects is extremely small and can be achieved by means of a very small electric motor.

[0015] The heavy object can be supported in a movable manner in a suitable way by means of a guide part inside the seat plate. For this purpose, different devices can be used to transmit the force action of the force drive device to the heavy object. According to a preferred embodiment, a cable traction device can be used for this purpose, which connects the electric force drive device to the heavy object. Another advantageous embodiment is provided with a threaded rod, which is moved by the force drive device, and the heavy object is connected to this threaded rod by means of a nut and can thus be moved between its end positions. This embodiment is particularly simple and reliable in operation because the threaded rod is protected from contamination by being arranged inside the seat plate, and the threaded rod itself is part of the guide part of the heavy object and is suitable for introducing the gravitational force onto the seat plate. Thereby, other components of the guide part can be constructed much more simply because they only have to ensure the rotation of the heavy object around the threaded rod.

[0016] An advantageous improvement of the present utility model provides that the folding seat is equipped with a latching device that prevents the seat plate from being pivoted manually into the use position. This is advantageous, for example, when the expected full load rate of a means of transportation is relatively high and as many standing positions as possible should be provided for this purpose and the use of the folding seat should be prevented. In the absence of a latching device, the seat plate can move freely and can be pivoted manually from the stowed position into the use position at any time. Even if the heavy object is in the rear position corresponding to the stowed position of the seat plate, the seat plate can be pivoted and used. This corresponds to the function of folding seats commonly used in theaters or cinemas. The latching device according to the present utility model prevents pivoting in the direction from the stowed position towards the use position. For this purpose, the rotary shaft in the support structure can be designed to be latched, for example.

[0017] Since it can be assumed that a passenger attempts to pivot the seat plate and can apply a relatively large force to the seat plate in this case, it is advantageous to arrange the latching device such that these forces are introduced into the structure carrying the folding seat as evenly as possible. Here, it is particularly advantageous to arrange the latching device near the front edge of the seat plate because in this way the rotary shaft is not subjected to most of the forces to be introduced and the acting forces are directly introduced from the seat plate through the latching device into the structure carrying the folding seat. For this purpose, the structure can be constructed such that the seat plate is located in a recess as much as possible in its stowed position, making it difficult to introduce the force.

[0018] For the optimal operation of a means of transportation having a folding seat according to the present utility model, it is advantageous to automatically perform the operation of the latching device, wherein the latching device automatically comes into effect when the seat board reaches the vertical position and is automatically released during the movement of the heavy object in the direction of its first final position. The advantage that can be obtained in this way is that the seat board can automatically perform latching and release along with the movement of the heavy object in the seat board. Particularly advantageous here is that no wires, such as electrical wires for controlling an electromagnet, need to be guided to the latching device. Here, the latching process and the release of the latch are achieved only by the movement of the heavy object inside the seat board.

[0019] According to an advantageous embodiment, the latching device can be configured with at least one receiving portion, which is configured for being arranged on a vertical wall, wherein in the latched state of the seat board, at least one pin moves from the seat board into the receiving portion. The receiving portion is configured for being arranged, in particular detachably fastened, on the vertical wall of the structure carrying the folding seat, into which structure the pin can move, which pin is movably supported in the seat board and can be moved in and out by the movement of a force driving device, wherein the pin engages in the receiving portion in its retracted position and connects the seat board and the receiving portion in a form-locking manner. If the seat board is in its stowed position, the pin can move from the seat board into the receiving portion at the end of the movement process of the heavy object in the direction of its second final position. To release the latch, the pin is released at the start of the movement process of the heavy object in the direction of its first final position, and once the center of gravity position is outside the axis of rotation, the seat board pivots into its use position.

[0020] A preferred embodiment of the present utility model provides that the latching device is arranged on the support structure, wherein in the latched state of the seat board, at least one pin moves from the seat board into the receiving portion. This is advantageous in cases where the latching device cannot be arranged on the front edge of the seat board but the latching function is still required.

[0021] The force applied by the force driving device is used to move the pin movably supported in the seat board, wherein according to one embodiment, this force is transmitted to the pin by means of a Bowden cable. In this way, the arrangement of the pin is achieved very flexibly, because all possible fastening positions of the pin inside the seat board can be easily reached by the Bowden cable.

[0022] Another advantageous force transmission scheme to the pin can be achieved by means of a push-pull rod. This force transmission scheme has lower wear compared to the Bowden cable.

[0023] Advantageously, the movement of the pin is caused by means of an elastic mechanism by the force exerted by the force drive means. This can be achieved in such a way that the heavy weight comes into contact with a spring, for example a leaf spring, at the end of its movement in the direction towards the rear edge of the seat plate and deforms it in such a way that the spring moves the pin into its retracted position. This embodiment can ensure the movement of the pin with a smaller number of components and in particular has low wear.

[0024] Another preferred embodiment of the present utility model provides that the seat plate is configured in such a way that it can be latched in its use position. Here, the latching means can be configured in such a way that the pin moves out into its retracted position at the end of the movement of the heavy weight in the direction towards the front edge of the seat plate. Here, the receiving part can preferably be arranged on the support structure.

[0025] The folding seat according to the present utility model can be equipped with a seat plate which forms a single-seat seat or can also be configured as a multi-seat seat. In this way, for example, a row of longitudinal seats can be designed on the inner wall of a means of transportation, which can be pivoted together in a force-assisted manner between a rest position and a use position.

[0026] According to the present utility model, a vehicle, in particular a rail vehicle, can be provided which includes at least one folding seat according to the present utility model. Description of the Drawings

[0027] The drawings exemplarily show:

[0028] Figure 1 The folding seat in the vertical position of the seat plate is shown;

[0029] Figure 2 The folding seat in the vertical position of the seat plate is shown in a side view;

[0030] Figure 3 The folding seat in the use position of the seat plate is shown in a side view;

[0031] Figure 4 The released state of the folding seat with a latching means is shown, wherein the latching means has a rod drive means;

[0032] Figure 5 The latched state of the folding seat with a latching means is shown, wherein the latching means has a rod drive means;

[0033] Figure 6 The released state of the folding seat with a latching means is shown, wherein the latching means has an elastic mechanism;

[0034] Figure 7Shows the locked state of a folding seat with a latching device, wherein the latching device has an elastic mechanism;

[0035] Figure 8 Shows the released state of a folding seat with a latching device, wherein the latching device has a Bowden cable;

[0036] Figure 9 Shows the locked state of a folding seat with a latching device, wherein the latching device has a Bowden cable. Detailed implementation

[0037] Figure 1 Exemplarily and schematically shows a folding seat in the vertical position of the seat board. The folding seat 1 is shown, which includes a seat board 2 and two support structures 6, wherein the seat board 2 is arranged to be pivotable about a horizontal rotation axis 3. For this purpose, the seat board 2 and the support structures 6 are respectively equipped with suitable pivot bearings. The seat board 2 is in a vertical, i.e., stowed, position, in which the front edge 16 of the seat board 2 is directed upward and the rear edge 17 of the seat board is directed downward. The seat board 2 is shown in a partially cut-away manner so that the components inside the seat board 2 can be seen. A threaded rod 8 is arranged inside the seat board 2, which is arranged to extend between the front edge 16 and the rear edge 17. By means of this threaded rod 8, a heavy object 5 can be moved. For this purpose, the heavy object 5 is equipped with a nut, which engages into the thread portion of the threaded rod 8. A force drive device 4 is provided for driving the threaded rod 8 in two rotational directions, so that the action of the force drive device 4 can move the heavy object 5 steplessly between a first final position and a second final position. In Figure 1 the situation where the heavy object 5 is in its second final position is shown, in which the center of gravity of the seat board comes to such a position that the seat board 2 pivots to the vertical position under the influence of gravity. The force drive device is designed as an electric motor, and the electric wires of the electric motor are preferably guided through one of the support structures 6 and the rotation axis 3 so that they cannot be seen from the outside.

[0038] Figure 2 Exemplarily and schematically shows a folding seat in the vertical position of the seat board in a side view. The folding seat 1 in Figure 1 is shown in a side cross-section. It can be seen here that the support structure 6 is fastened to a vertical wall 7, such as the side wall of a rail vehicle. In addition, the support structure 6 includes at least one stop 9, which prevents the rotational movement of the seat board 2 in a substantially horizontal position, so that the seat board cannot pivot further. This horizontal position is the use position of the seat board 2. If, as Figure 2 shown in, the seat board 2 of the folding seat 1 is manually pivoted to the use position, it will then automatically pivot back to the vertical position.

[0039] Figure 3 Exemplarily and schematically shown in a side view is a folding seat in the use position of the seat board. Shown is Figure 2 the folding seat 1 therein, where the heavy weight 5 moves in the direction of the front edge 16 of the seat board 2, whereby the center of gravity of the seat board 2 comes to such a position that the seat board 2 pivots under the influence of gravity into the horizontal position, i.e., the use position. If, as Figure 3 shown in, the seat board 2 of the folding seat 1 is manually pivoted into the vertical position, it then automatically pivots back into the use position.

[0040] Figure 4 Exemplarily and schematically shown is the situation of a folding seat with a latching device in the released position, where the latching device has a rod drive. Shown is a folding seat 1 similar to the embodiment shown in Figures 1 to 3 which is additionally equipped with a latching device. This latching device includes a receiving part 10 which is configured to be fastened to the wall of a rail vehicle, in particular the side wall. In order to positively lock the seat board 2 relative to the receiving part 10 and thus also relative to the wall, a pin 11 arranged to be movable in the seat board 2 is provided, the position of which is predefined by the position of the heavy weight 5. The positions of the pin 11 and the heavy weight 5 are synchronized with each other, where the pin is only fully moved out in the final position of the heavy weight 5 at the rear edge 17. For this purpose, a tension-compression rod 13 is arranged inside the seat board 2 such that the movement-out process of the pin starts in the last movement stage of the heavy weight 5 and before reaching the second final position of the heavy weight 5 and ends when reaching the second final position of the heavy weight 5. In this last movement stage of the heavy weight 5, the seat board 2 is already in the vertical position and the movement-out axis of the pin 11 is aligned with the receiving part 10. Shown in Figure 4 is the situation where the heavy weight 5 is in an intermediate position between its first final position and its second final position, in which the pin 11 should not have been moved out yet. A spring 15 is provided to pull back the pin 11 in all positions of the heavy weight 5 in which the pin 11 should not have been moved out, which spring acts on the tension-compression rod 13 and pulls the pin 11 back into the seat board 2.

[0041] Figure 5 Exemplarily and schematically shown is the situation of a folding seat with a latching device in the latched position, where the latching device has a rod drive. Shown is Figure 4 the embodiment in which the heavy weight 5 is in its second final position in the direction of the rear edge 17 of the seat board 2. Here, the heavy weight 5 comes into contact with the steering device of the tension-compression rod 13 and overcomes the force exerted by the spring 15 and moves the pin 11 out of the seat board 2.

[0042] Figure 6 Exemplarily and schematically shown is a folding seat with a latching device in the released position, wherein the latching device has an elastic mechanism. Shown is another embodiment of the latching device, which can be used in particular in applications where the receiving part 10 cannot be arranged directly on the wall. Here, the receiving part 10 is arranged on the support structure 6 and the pin 11 is arranged near the rear edge 17 of the seat plate 2 so as to be movable parallel to the axis of rotation. Particularly advantageously, two pins 11 are used in this embodiment, because this optimizes the distribution of the shear forces and prevents the forces from being introduced asymmetrically into only one of the two support structures 6. The transfer of the movement of the heavy object 5 to the pin 11 is achieved by means of the elastic mechanism 14, which is configured, for example, as a leaf spring and thus also exerts a restoring force on the pin 11. In Figure 6 shown is the situation where the heavy object is in an intermediate position between its first final position and its second final position, wherein here the pin 11 is pulled back by the elastic mechanism 14 and the seat plate 2 can pivot freely.

[0043] Figure 7 Exemplarily and schematically shown is a folding seat with a latching device in the latched position, wherein the latching device has an elastic mechanism. Shown is Figure 6 the embodiment in which the heavy object 5 is in its second final position and is in contact with the elastic mechanism 14 here and deforms it such that the elastic mechanism 14 has moved the pin 11 into its retracted position. Here, it is important that the retraction process of the pin starts in the last movement phase of the heavy object 5, before reaching the second final position of the heavy object 5 and ends when reaching the second final position of the heavy object 5.

[0044] Figure 8 Exemplarily and schematically shown is a folding seat with a latching device in the released position, wherein the latching device has a Bowden cable. Shown is another embodiment of the latching device, which uses the Bowden cable 12 for moving the pin 11 into and out of the receiving part 10. Here, the pin 11 is pulled back to its retracted position by a spring 15 and is moved out to its second final position by the force exerted by the heavy object 5 at the end of the movement of the heavy object. The Bowden cable 12 enables the components of the latching device to be arranged flexibly inside the seat plate 2. Figure 8 Shown is the situation where the latching device 8 is in the released position, wherein the heavy object 5 is in an intermediate position between its first final position and its second final position and the pin 11 is pulled back into the seat plate 2.

[0045] Figure 9Exemplarily and schematically shown is the case of a folding seat with a latching device in the latched position, wherein the latching device has a Bowden cable. Shown is Figure 8 the folding seat 1 in Figure 8 , wherein the heavy weight 5 is in its second final position and in contact with the latching device. Here, the pressure is transmitted via the Bowden cable 12 to the pin 11 and the pin 11 moves into the receptacle 10.

[0046] List of reference numerals:

[0047] 1 Folding seat

[0048] 2 Seat board

[0049] 3 Axis of rotation

[0050] 4 Force drive device

[0051] 5 Heavy weight

[0052] 6 Support structure

[0053] 7 Vertical wall

[0054] 8 Threaded rod

[0055] 9 Stop

[0056] 10 Receptacle

[0057] 11 Pin

[0058] 12 Bowden cable

[0059] 13 Tension and compression rod

[0060] 14 Elastic mechanism

[0061] 15 Spring

[0062] 16 Front edge of the seat board

[0063] 17 Rear edge of the seat board

Claims

1. A folding seat (1) for a vehicle, comprising a seat board (2) which is pivotable about a rotation axis (3) between a use position and a vertical position, characterized in that, a heavy object (5) is movably arranged inside the seat board (2), and the heavy object can be moved by means of a force driving device (4), wherein the seat board (2) automatically pivots into the use position under the influence of gravity in a first final position of the heavy object, and the seat board (2) automatically pivots into the vertical position under the influence of gravity in a second final position of the heavy object.

2. The folding seat (1) according to claim 1, characterized in that, support structures (6) are arranged on both sides of the seat board (2), the seat board (2) is pivotally fastened to the support structures, and the support structures bear the forces acting on the seat board (2), wherein the support structures (6) are configured to be fastened to a vertical wall (7).

3. The folding seat (1) according to claim 1 or 2, It is characterized in that the force driving device (4) is configured as an electric motor, and electric wires are guided along the rotation axis (3) to the motor.

4. The folding seat (1) according to claim 1 or 2, It is characterized in that the heavy object (5) can be moved along a guiding portion by means of a cable traction device.

5. The folding seat (1) according to claim 1 or 2, It is characterized in that the heavy object (5) can be moved by means of a threaded rod (8).

6. The folding seat (1) according to claim 1 or 2, It is characterized in that a latching device is provided, and the latching device prevents the seat board (2) from being manually pivoted into the use position.

7. The folding seat (1) according to claim 6, Characterized in that, the latching device automatically takes effect when the seat board (2) reaches the vertical position and is automatically released during the movement of the heavy object (5) in the direction of its first final position.

8. The folding seat (1) according to claim 6, It is characterized in that the latching device includes at least one receiving portion (10), and the receiving portion is configured to be arranged at the vertical wall (7), wherein in the latched state of the seat board (2), at least one pin (11) moves from the seat board (2) into the receiving portion (10).

9. The folding seat (1) according to claim 6, It is characterized in that the latching device includes at least one receiving portion (10) arranged at the support structure (6), wherein in the latched state of the seat board (2), at least one pin (11) moves from the seat board (2) into the receiving portion (10).

10. The folding seat (1) according to claim 8, It is characterized in that the movement of the pin (11) is caused by a Bowden cable (12) by means of the force applied by the force driving device.

11. The folding seat (1) according to claim 8, It is characterized in that, the movement of the pin (11) is caused by a push-pull rod (13) by means of the force applied by the force driving device (4).

12. The folding seat (1) according to claim 8, It is characterized in that The movement of the pin (11) is caused by means of a force applied by a force driving device (4) via an elastic mechanism (14).

13. The folding seat (1) according to claim 6, It is characterized in that is provided with a latching device which latches the seat board (2) in its use position.

14. The folding seat (1) according to claim 1 or 2, It is characterized in that wherein the seat board (2) is configured as a single-seat.

15. The folding seat (1) according to claim 1 or 2, Characterized in that, wherein the seat board (2) is configured as a multi-seat.

16. A vehicle having a folding seat, It is characterized in that wherein the folding seat is the folding seat (1) according to any one of claims 1 to 15.

17. The vehicle having a folding seat according to claim 16, It is characterized in that wherein the vehicle is a rail vehicle.

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