EP3799768B1 - Convertible folding seat for a stand used for both sitting and standing - Google Patents

Description

The invention relates to a convertible, collapsible and disassemblable seat element for grandstands which, when folded, can be used as a standing platform in a standing grandstand and, when unfolded, can be used as a seat in a grandstand with seats. The invention thus relates to a seat for a grandstand that can be used either as a standing or seated grandstand, in particular in a stadium or an event hall, the seat being designed as a component that can be converted between a lower standing position and an upper seated position and is permanently mounted on the grandstand . In the standing room position, the seating element forms a standing step in a standing room grandstand and in the seated position at least one seat in a seated grandstand and, when permanently installed in the grandstand, can be used for standing or seating by folding or unfolding without having to assemble or dismantle it . Such seating elements or stadium seats are also referred to as vario seats.

It is known to use grandstands variably as standing grandstands or, using seating elements, as grandstands for seating. The actual use of the grandstand depends on the type of event and the number of spectators to be accommodated. For example, in sports stadiums such as football or ice hockey stadiums, standing room is often offered to fans in certain areas. The conversion from seating to standing room doubles the number available Spectator seats almost so that the tickets are offered at a lower price and/or the organizer can achieve higher income. This is because the staircase or step structure of seating grandstands is usually different from that of standing grandstands. A grandstand step in a seating area is generally twice as wide and twice as high as a grandstand step in a standing area, since a spectator sitting on a seating element requires additional leg and foot room and the seat, in particular the backrest, also requires a certain amount of space. The use of a grandstand as a seated grandstand therefore means that the total number of seats available is reduced compared to a standing grandstand. This reduction in the overall capacity of a stadium or grandstand results in financial losses for the organizer and/or higher prices for spectators.

The sports fans are happy to accept the standing room offers not only because of the lower price, but also because the greater spectator density and the increased number of spectators at the corresponding events creates a more intense atmosphere in a fan block or in the entire stadium, which is for the fans and for support of the actors is very important. On the other hand, for other events, e.g. B. Concerts, more or only seats desired in the stands. Furthermore, for some sporting events, especially of an international nature, it is often stipulated (e.g. by FIFA) that the stadium must have a relatively large proportion of seats or even only seats. For example, only seats are allowed for international football matches, so the stadiums are usually fully equipped with seats. For national games, not such a large proportion of seats is required, nor is it desired by the fans and the operator.

This results in the need to convert grandstands from standing grandstands to seating grandstands and vice versa, depending on the type of event.

In order to be able to use a grandstand either as a standing or seated grandstand, standing places are often converted into seats and vice versa. To date, various procedures have been known for this.

To use a grandstand with seats, for example to host an international game, the fan area is equipped with removable seating elements. To host a national game, the seats in the fan area are dismantled and the necessary breakwaters are installed. The seats are therefore partially removed or reinstalled. Disadvantages here are the high conversion costs, the enormous amount of work, including the associated conversion time, and the need to store the removed parts of the seat elements elsewhere.

In order to save conversion costs, there are a number of systems that allow rapid conversion from seating to standing and vice versa. However, the individual systems differ greatly in terms of handling, ergonomics, economy and comfort.

A first known variant of a convertible stand-and-seat area includes a type of fixed railing bracket into which a foldable seat part is integrated. The seat part can be folded up and locked when using the seat element as a standing place. A disadvantage here is that in this embodiment the railing bracket is present for all seats and this creates a cage effect for the spectators. Another disadvantage is that either an additional standing step is required or the standing places in two consecutive rows are always at the same height.

Such a variant of a variable sit-stand system is in the EP 0 635 229 A1 described. It shows a barrier device, in particular for stadium grandstands and event halls, with a barrier device, which has vertically running strut elements which can be anchored in a foundation with their lower end and which are connected in their upper region by a cross strut element. A pivotable and lockable seat is accommodated in the barrier device. The disadvantage of this device is that each seat has to be unlocked and folded out manually and that the seat elements do not fold up automatically. Furthermore, this device has limited space in the walkway area or for escape routes. It's also unpopular with fans because the hoops on each row create a confinement effect and the standing room setup doesn't allow fans to disperse between the breakwaters in the stands. This device is also disadvantageous for the view of the spectators because, on the one hand, it does not provide an additional standing step at an intermediate height to the existing steps, and, on the other hand, the cross-strut element leads to an obstructed view in the sitting position.

In order to be able to use a grandstand either as a seat or standing grandstand without carrying out structural changes to the grandstand itself or without removing and installing seating elements, a second variant is known in which the seating elements are used, which as a whole are between a standing position and a Seating position can be converted by being designed as a component that can be swiveled around a joint and in the standing position form a performance area for the spectators. The seat part is located under a standing step made of sheet metal profiles, which can be folded down by approx. 180° to convert it into a seat, thereby releasing the seat part. The disadvantage here is that the seat height depends on the height of the grandstand step and cannot be freely specified. Therefore, this solution requires a suitable height of the grandstand steps, so that not all standing grandstands can be retrofitted with appropriate seating elements. Another disadvantage is the fixed position of the seat part forming the seat, which considerably reduces the space on the walkway.

Such seating elements are from the document DE 36 14 983 A1 known, which refers to a horizontally telescopically extendable stand that can be pushed together into a stacked position. There, on horizontally telescopically displaceable step elements, seat elements are arranged with a backrest that can be folded down onto the seat surface, with the backrests being folded down when the stands are moved together into the stacked position by a component of the subsequent step element. The well-known grandstand seat can be folded up in such a way that the seat part with the backrest placed on it is arranged below the standing platform part in the folded state, so that the standing platform part can be stepped on by one person. When unfolded, the standing platform part is below the seat part. This is achieved in that the standing platform part is pivotably fastened to a support piece, so that the sequence of the standing platform part and the seat part can be reversed in the vertical direction by a pivoting movement. In other words, if the seat portion is above the standing platform portion prior to pivotal movement, it will be below the standing platform portion after pivotal movement. Although the known grandstand seat essentially fulfills its purpose, it still has the disadvantage that the height at which the seat part is arranged above the floor when the grandstand seat is in the unfolded state cannot be changed or can only be changed with great effort. Furthermore, the depth of the floor surface on which the grandstand seat is arranged must be at least twice as great as the depth of the grandstand seat, which is essentially formed by the depth of the standing platform part.

A further development of the stand-sit element DE 36 14 983 A1 will be in the document DE 100 00 169 C1 described. There it is proposed that the joint, based on the pivoting position of the seat element in the seated position, in the area of the front end of the seat element and is arranged in the area of the front, vertical step wall of the grandstand step located under the seating element, and that the standing platform part can be pivoted with the seating element for the standing room position onto the grandstand step, which is in the seating position in front of the seating element. The disadvantage here is that the required seat height can only be achieved if the grandstand step is at a suitable height. In addition, the position of the seats in relation to the standing room will be moved backwards. It is also disadvantageous that the seat elements do not fold up automatically and that this device has limited space in the area of the walkways or for escape routes.

From the DE 199 20 705 C2 discloses a sit-stand combination for converting grandstands into standing or seating, using a pillar mounted on a step to support the sit-stand combination. The pillar is independent of the sit-stand combination and pivoted to the step. In the standing position of the standing/sitting combination, it is pivoted upwards and in the sitting position of the standing/sitting combination, it is pivoted downwards. The seat must be rotated about a horizontal pivot axis for conversion.

Also the document DE 10 2009 007 877 B4 describes a seat element for a grandstand that can be used either as a standing or seated grandstand, the seat element being designed as a component that can be converted between a lower standing position and an upper seating position. In the standing room position, the seat element forms a standing step in a standing room grandstand and in the seated position at least one seat in a seated grandstand. It comprises a seat part, a back part that can be folded down onto the seat part in the standing room position and a step element which, in the standing room position of the seat element, forms a step surface that covers the seat element at the top and which is supported on a horizontal step surface of a grandstand step. Furthermore, the seat element includes a support structure with at least one fastening foot, which is designed as a folding or pivoting foot, by means of which it can be fastened to the horizontal step surface of the grandstand step located under the seat element and by a lateral step running in the longitudinal direction of the horizontal step surface, transverse to the direction of a user of the seat Folding or pivoting movement of the mounting foot can be brought from the seated position to the standing position. The lateral folding or pivoting movement of the fastening foot can be carried out by a parallel pivoting device, by means of which the seat element can be converted by a lateral lifting/pivoting movement, or by a scissor lattice lifting device, by means of which the seat element can be converted by a vertical lifting movement. The disadvantage of this prior art is that no individual seats can be realized with this design. In addition, the variant with the lateral lifting and pivoting movement requires free space next to the seating element, and any seating that may be required there must be installed separately.

The document DE 10 2010 013 121 B3 describes an expandable and collapsible grandstand seat which can be fixed to a floor and has a standing platform part to which a seat part with a backrest pivotally arranged thereon is fixed. The standing platform part is arranged pivotably on at least one post-shaped element, and the post-shaped element is pivotally connected to the ground at its end remote from the standing platform part. The grandstand seat can be folded up in such a way that the seat part with the backrest placed on it is arranged below the standing platform part in the folded state, so that the standing platform part can be stepped on by one person. When unfolded, the standing platform part is below the seat part. This is achieved in that the standing platform part is pivotably fastened to a support piece, so that the sequence of the standing platform part and the seat part is reversed in the vertical direction by a pivoting movement can. In other words, if the seat portion is above the standing platform portion prior to pivotal movement, it will be below the standing platform portion after pivotal movement.

The disadvantage of this grandstand seat is that each seat has to be manually unlocked and folded out individually. Furthermore, this device has limited space in the walkway area or for escape routes. Another disadvantage is that the pivoting of the post-shaped element can be unlocked by unauthorized persons because the lockable joint only protects against unintentional pivoting of the post-shaped element. In addition, there is a risk of injury from the folded sheet metal arranged under the seat part. Another disadvantage is that the standing room is interrupted by a large number of gaps (approx. every 50 cm). Another disadvantage is that the seat parts do not fold up automatically. The conversion is also cumbersome because the post-shaped element, the seat part and the backrest have to be moved manually, for this purpose it has to reach far beyond the grandstand seat and a counter-rotating pivoting movement of the standing platform part and the post-shaped element has to be carried out.

the EP 2 468 141 B1 and DE 20 2010 016 997 U1 form the from the DE 10 2010 013 121 B3 known expandable and collapsible grandstand seat further to avoid the disadvantage that there is a height difference between the standing platform parts or the seat parts of adjacent grandstand seats due to manufacturing or assembly tolerances or different weights of the grandstand seat users. If several grandstand seats arranged in a row next to each other are used as a standing platform, this can result in tripping hazards for the users of the grandstand seats due to steps or ledges at the transition points between the grandstand seats. When the grandstand seats are used as seating, occupants' clothing may become trapped in a gap between the seat portions of adjacent grandstand seats will. In order to avoid these disadvantages, these documents propose arranging locking elements and matching receptacles in adjacent standing platform parts, which are designed in such a way that the standing platform parts of adjacent grandstand seats can be pivoted towards one another when the locking element is in the open position and are positively connected to one another when the locking element is in the closed position. However, this makes the grandstand seats more complex in terms of construction and increases the conversion effort when folding and unfolding. US828136A discloses a collapsible and collapsible seat element according to the preamble of claim 1.

The known folding seats for standing and seating grandstands have in principle proven themselves in practice, but they also have the disadvantages described above. In most cases, the known seat elements have proven to be too complex in terms of their construction or assembly. In principle, for cost reasons, the aim is to make the construction and assembly of the seat elements as uncomplicated as possible. A further requirement, which is not always met by known seating elements, is that the operation, ie the conversion of the standing grandstand into a seated grandstand and vice versa, should be as simple and quick as possible.

Furthermore, there is a desire to improve the protection of the seating elements, especially in the case of a structure as a standing room grandstand, against dirt and moisture, in order to keep the costs for cleaning to be carried out after the grandstand has been used as low as possible. Both for cleaning the grandstand and for reasons of protecting the spectators, it is desirable if the seating elements have as few protruding parts or openings as possible, especially when used as standing room.

Furthermore, it is also desirable that the seat elements in the pivoted position of the standing room position have the lowest possible overall height, since the height of the grandstand steps can then also be designed to be low. About that In addition, the seat element should also be designed so stable that the stepping surface forms a load-bearing structure for the spectators.

These requirements are not optimally met by the previously known seating elements. Proceeding from this state of the art, the object of the present invention is to create a seat element for a grandstand, which can be used either as a standing or seated grandstand, which avoids the described disadvantages of the previously known seat elements.

According to the invention, this object is achieved by a seat element having the features of patent claim 1 . Preferred configurations, developments and uses of the invention result from the dependent claims and the following description with associated drawings.

A convertible, collapsible and unfoldable seat element according to the invention for a grandstand that can be used either as a standing or seated grandstand, which, folded into a lower standing position, can be used as a standing platform in a standing grandstand and unfolded into an upper seated position as at least one seat in a seated grandstand, comprises at least one seat part and at least one associated foldable back part, which can be folded down onto the seat part when the seat element is in the standing position, can be supported on the floor of a grandstand step and forms a step surface of a standing platform that covers the seat element upwards, and can be folded up in relation to the seat part in the seated position of the seat element and one Backrest forms for the seat part, and a manually foldable supporting structure, by means of which the seat element can be fastened to the floor of a grandstand step, the supporting structure having at least one foldable fastening flap Pfuss includes and is designed such that the seat element in a vertical lifting movement by a manual folding movement of the folding foot attachment can be converted from the seated position to the standing position and back.

The seat element according to the invention has the special feature that the supporting structure has four foldable fastening folding feet, which, based on the viewing direction of a user of the seat element who is sitting on a seat part or standing on a step surface, are arranged in pairs on the left and right side of the seat element and each consist of an upper and a lower foot part, the lower ends of the lower foot parts being fastened to a floor plate which can be fastened to the floor of a grandstand step so that they can be pivoted parallel to the front about a lower foot part joint, the upper ends of the upper foot parts each being fastened to an upper foot part joint parallel forward pivotally attached to a seat side portion of the seat member, and the upper ends of the lower foot portions and lower ends of the upper foot portions located on each side of the seat member in respective middle foot portion joints in a common foot side link tion part are pivotally mounted, with a left and a right fastening folding foot each having a corresponding interlocking foot part toothing at the upper end of the lower foot part and at the lower end of the associated upper foot part of the fastening folding foot for synchronizing the pivoting movement of the toothed foot parts, the supporting structure has a releasable seat lock , by means of which the foot parts can be secured in the seating position against pivoting forward out of the seating position, and the seat element comprises a seat cross-connection part which is arranged on the rear side of the seat element, which connects the left-hand side with the right-hand side of the seat element and to which the seat side parts are fastened are, on which the upper foot parts of two folding feet are pivotally attached and / or a seat part is attached and / or the back part is mounted foldable.

• Es können umrüstbare Einzelsitze, also Sitze für eine Person realisiert werden. Ferner sind auch Sitze für mehrere Personen in einer Gruppe möglich.
• Beim Umrüsten von der Sitzplatzstellung in die Stehplatzstellung wird kein freier Platz neben dem Sitzelement benötigt, und in der Sitzplatzstellung ist es nicht erforderlich, einen eventuell dort gewünschten Sitzplatz gesondert zu montieren.
• Das Sitzelement kann schnell und unaufwändig von der Stehplatzstellung in die Sitzplatzstellung und umgekehrt umgewandelt werden, sodass eine mit solchen Sitzelementen ausgestattete Stehplatztribüne schnell und unaufwändig in eine Sitzplatztribüne umgerüstet werden kann und umgekehrt.
• Durch eine gleichmäßige Bewegungsrichtung beim Hoch- und Herunterklappen ist eine schnelle Umrüstung von Steh- auf Sitzplätze und zurück möglich. Die parallel liegenden Klappfüße sowie eine Verzahnung untereinander gewährleisten einen kraftsparenden, gleichmäßigen und synchron geführten Klappvorgang, der das Umrüsten erleichtert.
• Beim Umrüsten kann die Rückenlehne bzw. das Rückenteil als Hebel verwendet werden, was das Umrüsten erleichtert.
• Das Umrüsten des Tribünensitzes von einem Sitzplatz in einen Stehplatz und umgekehrt ist sehr einfach.
• Des Weiteren ist es vorteilhafterweise möglich, das Sitzelement zusammen- und auseinanderzuklappen, ohne dass sich die horizontale Position des Sitzteils hierdurch verändert. Mit anderen Worten, das Sitzteil befindet sich nach dem Auseinanderklappen in die Sitzplatzstellung in unveränderter horizontaler Längsrichtung genau senkrecht über der Position, in der es sich in der zusammengeklappten Stehplatzstellung des Sitzelements befindet, ohne dass es horizontal nach vorne oder hinten verschoben ist. Hierdurch lässt sich das Sitzelement insbesondere bei einer Tribüne verwenden, deren Stufen eine relativ geringe Tiefe haben.
• Beim Umrüsten des Sitzelements von der Sitzplatzstellung in die Stehplatzstellung bleiben keine störenden Bügel stehen.
• In der Sitzplatzstellung sind die Sitzelemente in die Senkrechte klappbar, vorzugsweise selbsttätig, und der Laufgang vor dem Sitzelement wird durch die hochklappbaren Sitzteile großzügiger.
• Die Sitzhöhe kann immer optimal ausgeführt werden, unabhängig von der Höhe der senkrechten Stufenwand der Tribüne.
• Auch bei unterschiedlichen Höhen der senkrechten Stufenwände kann die Sitzhöhe erhalten bleiben.
• Beim Umwandeln des Sitzelements von der Sitzplatzstellung in die Stehplatzstellung entsteht eine zusätzliche Stehstufe auf der Stufenfläche der Tribüne.
• Das Sitzelement ist mit relativ wenigen Bauteilen unaufwändig herstellbar, kompakt und hoch belastbar.
• Das Sitzelement kann zum Sichern gegen ein unbeabsichtigtes Umrüsten oder gegen ein Umrüsten durch unbefugte Personen verriegelt werden. Dabei kann das Ent- und Verriegeln für eine Gruppe von Sitzen gemeinsam erfolgen.

The invention solves many disadvantages of the seat elements known from the prior art. The advantages of embodiments according to the invention include the following:

• Convertible individual seats, i.e. seats for one person, can be implemented. Seats for several people in a group are also possible.
• When converting from the seated position to the standing position, no free space is required next to the seating element, and in the seated position it is not necessary to separately mount any seat that may be desired there.
• The seating element can be converted quickly and easily from the standing position to the seating position and vice versa, so that a standing room grandstand equipped with such seating elements can be quickly and easily converted into a seated grandstand and vice versa.
• A uniform direction of movement when folding up and down makes it possible to convert quickly from standing to sitting and back. The parallel folding feet and the interlocking ensure a power-saving, even and synchronized folding process, which makes conversion easier.
• When converting, the backrest or the back part can be used as a lever, which makes the conversion easier.
• Converting the grandstand seat from sitting to standing and vice versa is very easy.
• Furthermore, it is advantageously possible to fold and unfold the seat element without changing the horizontal position of the seat part as a result. In other words, after unfolding into the seating position, the seat part is located in an unchanged horizontal longitudinal direction exactly vertically above the position in which it is in the folded standing position of the seat element, without being shifted horizontally forwards or backwards. As a result, the seat element can be used in particular in a tribune, the steps of which have a relatively small depth.
• When converting the seat element from the seated position to the standing position, no annoying brackets remain.
• In the seated position, the seat elements can be folded into the vertical position, preferably automatically, and the walkway in front of the seat element becomes more spacious thanks to the seat parts that can be folded up.
• The seat height can always be optimally designed, regardless of the height of the vertical step wall of the grandstand.
• Even with different heights of the vertical step walls, the seat height can be maintained.
• When converting the seating element from the seated position to the standing position, an additional standing step is created on the stepped surface of the grandstand.
• The seat element can be produced in a simple manner with relatively few components, is compact and can be subjected to high loads.
• The seat element can be locked to secure against unintentional conversion or against conversion by unauthorized persons. A group of seats can be unlocked and locked together.

A grandstand that can be used optionally as a standing or seated grandstand, in particular in a stadium or an event hall, can advantageously have seating elements according to the invention. In principle, the invention is suitable both for grandstands with fixed, non-telescopic and for telescopic grandstands with horizontally displaceable steps; However, it is preferably used in connection with fixed, non-telescopic grandstand steps, e.g. B. in stadiums with brick or concrete grandstand steps or fixed steel grandstands. It is also suitable for retrofitting pure standing grandstands with seats or for converting pure seating grandstands into convertible standing/seated grandstands.

Fig. 1

eine Seitenansicht bzw. einen Teilquerschnitt der linken Seite eines erfindungsgemäßen Sitzelements in der Stehplatzstellung,

Fig. 2

das Sitzelement von Fig. 1 in einer Zwischenstellung beim Umrüsten von der Stehplatzstellung in die Sitzplatzstellung,

Fig. 3

das Sitzelement von Fig. 1 in der Sitzplatzstellung,

Fig. 4

eine Vorderansicht bzw. einen Teilquerschnitt eines erfindungsgemäßen Sitzelements in der Sitzplatzstellung mit einem Sitzteil,

Fig. 5

ein Detail einer Sitzplatz- und Stehplatzverriegelung,

Fig. 6

eine Vorderansicht bzw. einen Teilquerschnitt eines erfindungsgemäßen Sitzelements in der Sitzplatzstellung mit zwei Sitzteilen,

Fig. 7

eine Vorderansicht bzw. einen Teilquerschnitt eines erfindungsgemäßen Sitzelements in der Sitzplatzstellung mit drei Sitzteilen,

Fig. 8

eine Seitenansicht bzw. einen Teilquerschnitt der linken Seite eines gegenüber Fig. 1 abgewandelten Sitzelements in der Stehplatzstellung,

Fig. 9

das Sitzelement von Fig. 8 in der Sitzplatzstellung,

Fig. 10

eine perspektivische Ansicht zu Fig. 8,

Fig. 11

eine perspektivische Ansicht des Sitzelements von Fig. 9 von vorne und

Fig. 12

eine perspektivische Ansicht des Sitzelements von Fig. 9 von hinten.

The invention is explained in more detail below with reference to exemplary embodiments illustrated in the figures. The special features described therein can be used individually or in combination with one another in order to create preferred embodiments of the invention. Parts that are the same or have the same effect are denoted by the same reference symbols in the various figures and are usually only described once, even if they can be used to advantage in other embodiments. Show it:

1

a side view or a partial cross section of the left side of a seat element according to the invention in the standing room position,

2

the seat element of 1 in an intermediate position when converting from the standing position to the seating position,

3

the seat element of 1 in the seated position,

4

a front view or a partial cross section of a seat element according to the invention in the seating position with a seat part,

figure 5

a detail of a seat and standing room lock,

6

a front view or a partial cross section of a seat element according to the invention in the seating position with two seat parts,

7

a front view or a partial cross section of a seat element according to the invention in the seating position with three seat parts,

8

a side view and a partial cross-section of the left side of an opposite 1 modified seating element in the standing room position,

9

the seat element of 8 in the seated position,

10

a perspective view 8 ,

11

a perspective view of the seat element of 9 from the front and

12

a perspective view of the seat element of 9 from behind.

the 1 1 illustrates in a side view or a partial cross section the left side of an exemplary embodiment of a seat element 1 according to the invention in the folded standing position. The right-hand side of the seat element 1 is designed with mirror symmetry accordingly. The seat element 1 is a convertible, collapsible and unfoldable seat element 1 for a grandstand that can be used either as a standing or seated grandstand, which in the lower standing position shown is folded up as a standing platform of a standing grandstand and unfolded in an upper seated position as at least one seat in a seated grandstand. The seat element 1 comprises at least one seat part 2 and at least one associated foldable back part 3. In the standing room position of the seat element 1, the back part 3 is open the seat part 2 is folded down, supported relative to the floor of the grandstand step 4 and forms a stepping surface 5 of a standing platform for one person, covering the seat element 1 at the top.

Shown is the left side of the seat element 1 in its position (position, location, structure, condition, arrangement) as standing room. The information left, right, front and rear refers to the viewing direction of a user of the seat element 1 who is sitting on a seat part 2 or standing on a step surface 5. In the drawing, his/her viewing direction is to the left to the grandstand level that is low at night, and his back points to the right , where the next higher grandstand level follows. Accordingly, in the drawing, the front side (the front) of the seat member 1 is on the left and the rear side (the back) is on the right. The longitudinal direction of the seat element 1 runs in the direction of view of the user from the rear side to the front side of the seat element 1, in the drawing from right to left, i.e. in the direction of the depth of the grandstand step 4. The transverse direction of the seat element 1 runs transversely thereto, from the left to the right side of the seat element 1, in the drawing perpendicular to the plane of the drawing, i.e. in the direction of the width of the grandstand level 4.

In preferred embodiments, the stepping surface 5 is arranged approximately halfway between the horizontal step surfaces of two adjacent grandstand steps 4 when the seating element 1 is in the standing room position. Furthermore, it is advantageous if the length of the tread surface 5 is approximately half the depth of a horizontal step surface of a grandstand step 4 .

The seat element 1 comprises a manually foldable support structure under the seat part 2, by means of which it can be fastened to the floor of the stage 4 of the grandstand. The support structure includes at least one foldable folding foot and is designed in such a way that the seat element 1 in a vertical lifting movement can be converted from the seated position to the standing position and back by a manual folding movement of the folding foot. In the case of a seat element 1 according to the invention, the supporting structure has four foldable fastening folding feet 6, 7, 8, 9, which are arranged in pairs on the left and right side of the seat element 1. The fastening folding feet 6, 7, 8, 9 are preferably arranged in pairs one behind the other, based on the viewing direction of a user of the seat element who is intended to be sitting on a seat part 2 or standing on a step surface 5. However, behind one another in this sense does not mean that they have to be arranged exactly in line, but only that one folding foot 6, 8 of a pair is arranged in the front area of the seat element 1 and the other folding foot 7, 9 in the rear area of the seat element 1, whereby a preferably small offset of the folding feet 6, 7, 8, 9 of a pair against each other in the transverse direction of the seat element 1 is possible.

The folding folding feet 6, 7, 8, 9 each consist of an upper 10, 12, 14, 16 and a lower 11, 13, 15, 17 foot part, the lower ends of the lower foot parts 11, 13, 15, 17 being one lower foot part joint are fastened parallel to the front so that they can be pivoted to a floor plate 18 which can be fastened to the floor of the grandstand step 4, for example by dowelling. The base plate 18 thus serves as a foot console for the lower foot parts 11, 13, 15, 17 of the folding feet 6, 7, 8, 9. The upper ends of the upper foot parts 10, 12, 14, 16 are parallel to the front around an upper foot part joint pivotally attached to a seat side part 19 of the seat element 1. The upper ends of the lower foot parts 11, 13, 15, 17 and lower ends of the upper foot parts 10, 12, 14, 16, each arranged on one side of the seat element 1, are pivotably mounted in respective central foot part joints in a common foot side connection part 20.

According to an advantageous additional feature, in the standing room position of the seat element 1, the foot parts 10-17 are arranged under the folded back part 3. As a result, the standing platform formed is compact and covered and protected on its upper side. Furthermore, it can be well covered on one or more sides and there are no protruding parts underneath that would create a tripping hazard.

A left 7 and a right 9 folding foot have at the upper end of the lower foot part 13 and at the lower end of the associated upper foot part 12 of the folding foot 7, 9 a corresponding intermeshing foot part toothing 21 for synchronizing the pivoting movement of the toothed foot parts 12, 13.

Furthermore, the supporting structure with the folding feet 7, 8, 9, 10 has a releasable seat lock 22, by means of which the foot parts 10, 11 can be secured in the seat position against pivoting out of the seat position forwards. In the illustrated embodiment, the seat lock includes retaining bolts 23 on the foot parts 10, 11, with which they are secured in the extended position when the seat element 1 is in the seating position.

The seat element 1 further comprises a seat cross-connection part 24 which is arranged on the rear side of the seat element 1 and which connects the left-hand side with the right-hand side of the seat element 1 . It serves as a seat traverse and base profile and is preferably designed as a tubular metal profile. A seat side part 19 is fastened to the seat cross-connection part 24 on the left and right side of the seat element 1 . On the seat side parts 19, the upper foot parts 10, 12 of two folding feet 6, 7 are pivotally attached. Furthermore, the seat part 2 is fastened to the seat side parts 19 and the back part 3 is mounted so that it can be folded. In a preferred embodiment, the seat element 1 comprises a seat side part 19 on its left and right side, on which the front upper 10th and rear upper foot part 12 of the fastening folding feet 6, 7 are pivotably mounted on the respective seat element side.

According to the preferred embodiment shown, the seat element 1 comprises a foot cross-connection part 25 which connects the left foot-side connection part 20 to the right foot-side connection part 20 . According to another advantageous feature shown, the foot cross-connection part 25 is attached to the foot-side connection parts 20 in front of the front fastening folding feet 6 , 8 . It is used in the standing room position to hide the seat element 1 forward and in the seated position to stabilize and lock the unfolded folding folding feet 6, 8. Furthermore, as shown in the illustrated advantageous embodiment, in the standing room position the front edge of the folded back part 3, the forms the upper edge of the back part in the unfolded position of the back part, advantageously be supported on the floor of a grandstand step 4 by means of the foot cross-connection part 25 .

In the standing room position, the rear of the seat element 1 is advantageously supported on the grandstand step 4 as shown, in that the seat cross-connection part 24 is supported on the floor of a grandstand step 4 . To compensate for differences in height between the seat cross-connection part 24 and the grandstand step 4, a spacer 26 can advantageously be attached under the seat cross-connection part 24, which serves as a support between the seat cross-connection part 24 and the grandstand step 4. It is used for support and load bearing in the standing room position and is preferably welded to the seat cross-connection part 24 . The height of the spacer 26 can be adjusted according to the structural conditions.

According to a further advantageous feature, the seat element 1 shown also has a detachable standing room lock 27, by means of which the Seat element can be secured against unfolding from the standing room into the seated position. Both the seat lock 22 and the standing room lock 27 can be designed to secure against unintentional adjustment and/or against adjustment by unauthorized persons. In general, the standing or seat lock 22, 27 can be designed in any way, for example by a pivotable folding bolt, a sliding cross bar or a bolt or spring bolt. To secure against unintentional actuation of the standing or seat lock 22, 27, it can have a folding, securing or spring element. To secure against unauthorized actuation, a lock or a fitting element that can only be released or actuated with a specific tool can be provided. In the illustrated embodiment, the standing room lock 27 includes a laterally displaceable sliding bar 28 which engages with an upper pin 29 in a locking slot 30 of the folded back part 3 and engages.

the 2 shows the seat element 1 of FIG 1 in an intermediate position when converting from the standing position to the seating position, with the back part 3 being folded up in the pivoting direction 31 . In doing so, the two foot parts of a folding foot 6, 7 are separated from the in 1 position shown, in which they are folded forward, into an unfolded, stretched position, which is shown in 3 is shown. The seat part 2 is thereby raised in a vertical lifting movement, and the seat element 1 remains anchored to the floor panels 18 on the grandstand step 4 . The two upper 10, 12 and the two lower 11, 13 foot parts of the folding feet 6, 7 remain aligned parallel to each other when the seat element 1 is folded up and down. The foot side connection part 20 is attached to the foot cross-connection part 25 and serves as a receptacle for the bearing points of the front 10, 11 and rear 12, 13 foot parts. The foot part toothing 21 of the rear foot parts 12, 13 is a symmetrical, synchronized Folding and unfolding of the lower 11, 13 and upper foot parts 10, 12 is achieved and an uncontrolled tipping away of the fastening folding feet 6, 7 when converting the seat element 1 is prevented.

The folding feet 6, 7 can each be attached to its own base plate 18. In order to increase the stability of the seat element 1 and to simplify its assembly, however, it is preferred if, as shown in the exemplary embodiment, the lower foot parts 11, 13 on the left side of the seat element 1 are jointly attached to a left base plate 18 and the lower foot parts 15, 17 on the right-hand side of the seat element 1 are jointly attached to a right-hand base plate 18 so as to be pivotable. In this case, the seat element 1 does not have four base plates 18, one for each folding foot 6, 7, 8, 9, but two base plates 18, one on each side of the seat element 1. In the illustrated embodiment it can also be seen that the at the bottom plate 18 articulated lower ends of the lower foot parts 11, 13 are articulated on different sides of a vertical bracket of the base plate 18, so are slightly offset in the transverse direction of the seat element 1 against each other.

The upper 12 and the lower 13 foot part of a folding foot 7 on one side of the seat element 1 are interlocked. According to the preferred embodiment shown, the foot part toothings 21 are arranged on the foot parts of the rear fastening folding feet 7, 9. This leads to better power transmission when the seat element 1 is folded up into the seating position.

According to a further advantageous feature, the seat element 1 shown has a back part toothing 32 for synchronizing the pivoting movement of the back part 3 with the pivoting movement of the foot parts 10-17 of the folding folding feet 6, 7, 8, 9, each of which has a toothing on the upper ends of the upper foot parts 12 , 16 of the left 7 and the right 9 rear fastening folding foot arranged toothing and therein correspondingly engaging toothing of the lower end of the back part 3 comprises. In the illustrated embodiment, the upper rear foot parts 12, 16 of the folding feet 7, 9 thus have two teeth, namely the foot part teeth 21 at the bottom and the back part teeth 32 at the top. The back part teeth 32 with the upper ends of the upper foot parts 12, 16 and the lower ends of the back part 3 is preferably attached to the foot side connection part 20 or to the foot cross-connection part 25 and stored.

The back serration 32 has several advantages. On the one hand, it simplifies the folding and unfolding of the seat element 1 because the folding mounting feet 6, 7, 8, 9 and the back part 3 do not have to be handled separately, but are moved synchronously when the back part 3 is pivoted. On the other hand, it facilitates the folding and unfolding of the seat element 1 because the back part 3 serves as a lever and therefore only a small amount of force is required. Furthermore, it also reduces the risk of injury when folding the seat element 1 up and down, because when the back part 3 is pivoted, the lifting movement of the seat part 2 or the seat element 1 can be carried out precisely and in a finely controllable manner. Another advantage of the back part toothing 32 is that no locking device is required to lock the back part 3 in the seated position, i.e. when the back part 3 is in the position of use as a stepping surface 5 on the seat part 2, to protect the back part 3 against unwanted or unauthorized To secure opening, since then the back part 3 is already secured with a standing room lock 27, by means of which the seat element 1 can be secured against unfolding from the standing room into the seated position.

the 3 shows the seat element 1 of FIG 1 , when unfolded to the upper seating position, in which it serves as at least one seat a seating grandstand can be used. The two foot parts 10-17 of a folding foot 6, 7, 8, 9 are in an unfolded, stretched position. In order to prevent the folding feet 6, 7, 8, 9 from pivoting further beyond the extended position in the seated position, it is advantageously provided that at least one lower foot part 11, 13, 15, 17, in the illustrated embodiment the rear lower foot part 13 , 17, has a foot part stop 33 at its lower end, which rests on the base plate 18 when the seat element 1 is in the seated position. The foot part stop 33 is formed by a beveled surface on the lower end of the foot part 13, 17, which serves as a stop for the floor plate 18 in the seated position and limits the pivoting of the lower foot part 13, 17 to the rear.

When the seat element 1 is in the seated position, the back part 3 is swung open relative to the seat part 2 and forms a backrest for the seat part 2 or for a person sitting on the seat part 2 . The back part 3 is rotatably mounted about a horizontal, transverse back part pivot axis 34 and has a back part stop 35 at its lower end, which rests on the seat cross-connection part 24 when the back part 3 is folded up into the sitting position and thus limits the rearward pivoting of the back part 3 so that a seated user of the seat element 1 can lean against it with his back.

The seat part 2 is preferably formed from a perforated sheet metal part. A design as a wooden or plastic shell is also possible. As shown, the seat part 2 is preferably also rotatably mounted about a horizontal, preferably transverse seat part pivot axis 36 so that it can be folded from an approximately horizontal position to an approximately vertical position when the seat element 1 is in the seating position. The seat part pivot axis 36 of the seat part 2 enables the seat part 2 to be folded. In this case, the seat part pivot axis 36 is advantageously not located at the rear end of the seat part 2, but further forward, but preferably closer to the rear end of the seat part 2 than to the front end of the seat part 2. When the seat part 2 is folded up, the front edge of the seat then folds up and the rear edge of the seat part 2 folds down.

In an advantageous embodiment shown, the seat part pivot axis 36 of the seat part 2 also serves as an upper bearing point for the front fastening folding feet 6, 8, that is, the seat part 2 is mounted in the upper end of a front upper foot part 10, 14. According to another advantageous feature, also shown, the seat part 2 is mounted in a seat side part 19 which is preferably fixed to the seat cross-connection part 24 .

The seat element 1 is advantageously a component that folds up automatically, that is to say it is designed in such a way that it folds up automatically when the seat element 1 is in the seating position as soon as a person sitting on it stands up. As soon as the user leaves the seat, the seat part 2 folds up and thereby opens up a widened walkway or escape route. To sit down, the user has to fold down the seat part 2 manually. The automatic folding up of the seat part 2 can be achieved in various ways. One possibility is that the seat element 1 has a restoring or spring element that automatically holds the seat part 2 in the folded-up position. According to a preferred illustrated embodiment, the seat part 2 is designed in such a way that it folds up automatically under its own weight. For this purpose, the seat part can have a counterweight 37, preferably on the rear edge of the seat part 2, through which it folds up automatically.

The seat part pivot axis 36 and a seat part stop 38 are fastened to the seat part 2, which limits the deflection of the seat part 2 in the folded-down seat position and in the folded-up position. The seat part stop 38 on the seat part 2 thus serves to limit the tilting movement of the seat part 2 when a person is sitting on it and when it is folded up. In the exemplary embodiment shown, the seat part stop 38 is designed as a round bolt which is guided in a curved or banana-shaped guide slot 39 in the seat side part 19 . When the seat part 2 is folded down, the round bolt rests against the upper end of the guide slot 39 and when the seat part 2 is folded up, it rests against the lower end of the guide slot 39 .

The foot cross-connection part 25, which is used to hide the seat element 1 to the front in the standing room position, is fastened to the foot-side connection part 20. As a result, when the seat element 1 is unfolded into the seating position, it is also raised and shifted to the rear. In the seating position, it then serves to stabilize and lock the opened folding feet 6, 7, 8, 9.

In the seat position shown, the releasable seat lock 27 is locked. By means of the seat lock 27, the foot parts 10-17 are secured in the seated position against pivoting forward out of the seated position. In the illustrated embodiment, the seat lock 27 includes a laterally slidable slide latch 28 with an upper 40 and a lower 41 slide slot. In the locked position of the sliding latch 28, the retaining bolt 23, which is attached to the lower end of the upper foot part 10, engages in the upper slide slot 40, and the retaining bolt 23, which is attached to the upper end of the lower foot part 11, engages in the lower slide slot 41 is. The sliding bolt 28 is guided in the foot cross-connection part 25 so that it can be displaced laterally and is held under pretension with a disk spring 42 .

In the illustrated embodiment, the slide bolt 28 for the seat lock 22 is also the slide bolt 28 for the standing room lock 27, by means of which the seat element 1 against unfolding from the Standing position can be secured in the seated position. In general, it is advantageous if an actuating part of the seat lock 22 , in the exemplary embodiment shown the sliding bolt 28 , is also designed to actuate the standing room lock 27 .

In an advantageous embodiment, the back part 3 of the seat element 1 comprises a welded metal frame with an upper transverse tube 43, a lower transverse tube 44, two side tubes 45, 46 connecting the upper 43 and lower 44 transverse tubes, attached on the left and right respectively, and two on each of the side tubes 45, 46 attached side straps 47. In the upper cross tube 43 is the locking slot 30 for the standing room lock 27. The two side straps 47 are formed at the bottom with a bearing hole for folding down the back part 3 and with the back part toothing 32. In alternative embodiments, the back part toothing 32 could also be formed at another point of the lower end of the back part 2, for example at the lower ends of the side tubes 45, 46.

In the upper 43 and lower 44 cross tube mounting holes for a screw-in back part filling 48 are incorporated. The back part filling 48 serves as a backrest and can be screwed into the metal frame. The back panel filling 48 is preferably formed from edged perforated sheet metal. Alternatively, the back part filling 48 can also be made from a different material, for example from one or more wood or plastic elements.

In a preferred embodiment, the tread surface 5 is formed by a stable, load-bearing metal sheet, for example a checkered metal sheet, which is attached to the back of the back part 3 (relative to the seating position of the seat element 1) or on the upper side of the back part 3 (relative to the standing position of the Seat element 1) is attached. The tread surface 5 is used in the standing room position of the seat element 1 as Base plate for spectators standing on it. It is appropriate, for. B. by welding, on the back part 3 attached. For reasons of stability and to reduce the risk of injury, it is advantageously provided with a fold that is applied to the upper transverse tube 43. The tread surface 5 can be provided with an anti-slip covering.

the 4 shows a front view or a partial cross section of a seat element 1 according to the invention in the seating position with a seat part 2 folded up and a back part 3 folded up. It has only one seat part 2, and the seat part 2 forms a single seat for only one person.

The left and right floor panels 18 are bolted to the floor of the stage 4 of the grandstand. In the base plates 18, the left 6, 7 and right 8, 9 folding feet are pivotally mounted and are in the illustrated seat position in a stretched position, which is locked by means of the seat lock 22.

The seat lock 22 includes on the left and right front folding foot 6, 8 each have a laterally displaceable sliding latch 28 with an upper 40 and a lower 41 slide slot. In the locked position of the slide bolts 28, the retaining bolt 23, which is attached to the lower end of the upper foot part 10, 14, engages in the upper slide slot 40, and the retaining bolt 23, which is attached to the upper end of the lower foot part, engages in the lower slide slot 41 Foot part 11, 15 is attached. The slide bolts 28 are each guided on a slide bolt 50 in a laterally displaceable manner by means of an elongated hole 49 . They each have a gripping pin 51 for manual actuation.

The sliding latch 28 is guided in the foot cross-connection part 25, which is attached to the foot-side connection parts 20 in front of the front fastening folding feet 6, 8. The length of the transverse foot connection part 25 is adapted to the width of the seat element 1 and connects the left foot side connection part 20 to the right foot side connection part 20.

The back part 3 is mounted on the foot cross-connection part 25 . Furthermore, the back part 3 comprises an upper cross tube 43, a lower cross tube 44, two side tubes 45, 46, which connect the upper 43 and lower 44 cross tube, attached to the left or right, and two side straps 47 attached to the side tubes 45, 46 formed metal frame is a back part filling 48 used from perforated metal.

The seat element 1 comprises on its left and right side a seat side part 19 on which the front upper 10, 14 and rear upper 12, 16 foot part of the folding feet 6, 7, 8, 9 on the respective seat element side is pivotably mounted. The seat side parts 19 are fixed to the seat cross-connection part 24 . On the seat side parts 19, the upper foot parts 10, 12, 14, 16 of the folding feet 6, 7, 8, 9 are pivotally attached. Furthermore, the seat part 2 is fastened to the seat side parts 19 and the back part 3 is mounted so that it can be folded. In some embodiments, provision can be made for the seat element 1 to be provided with a side panel on the left and right side in whole or in part, in particular in areas where there is a joint or toothing, in order to cover moving parts and reduce the risk of injury when converting the seat To reduce standing element 1.

The total width of the seat element 1 (overall, from the left outside to the right outside) is 50.4 cm in this embodiment. Appropriate widths are preferably between 40 cm and 60 cm.

the figure 5 shows a detail of a seat and standing room lock 22, 27, namely a plan view of the sliding latch 28 of the right front folding foot 8 of attachment 4 . The sliding latch 28 on the left front folding foot 6 is designed correspondingly as a mirror image. The sliding latch 28 is designed to actuate both the seat lock 22 and the standing room lock 27 . At its upper end it has a pin 29 with which it can engage in a locking slot 30 of the folded back part 3 and engage. Furthermore, the slide bar 28 has an upper 40 and a lower 41 slide slot, into which the retaining bolts 23 attached to the foot parts 10, 11, 14, 15 engage when the slide bar 28 is in the locked position. The slide bolt 28 is guided laterally displaceably on a slide bolt 50 by means of a slot 49 and has a gripping pin 51 for manual actuation.

the 6 shows a front view or a partial cross section of a seat element 1 according to the invention in the seating position with two seat parts 2. In general, the seats of a seat element 1 can be designed in any suitable manner adapted to the event location. For example, a seat element 1 can be configured as an individual seat or can include several individual seats arranged next to one another in a row or also include a bench seat that offers space for several people. Advantageous embodiments of a seat element 1 can be that it has a seat part 2 that forms a seat for several people sitting next to each other or, in particular, that it has several seat parts 2 arranged next to one another in a row, each of which forms a single seat for one person. To increase the stability in the standing and/or sitting position, a seat element 1, no matter how many seats it has, can be connected on its side to a laterally adjacent seat element 1 by means of a suitable linking device.

If several seats or seat parts 2 are combined in a seat element 1, for example as individual seats arranged next to one another, with one individual seat being provided for a spectator, it is advantageous if the seat element 1 comprises a supporting structure common to the seats, which has only four folding folding feet 6, 7, 8, 9, which are arranged in pairs on the left and right side of the seat element 1 and fold synchronously when converting the seat element 1. This is possible if the lengths of the foot cross-connection part 25 and the seat cross-connection part 24 are made corresponding to the width of the seat element 1 . The seat parts 2 are fixed to respective seat side parts 19 fixed to the seat cross link part 24 and may be individually foldable. The two outer seat side parts 19 also form the bearing for the upper foot parts 10, 12, 14, 16 of the folding feet 6, 7, 8, 9.

In an advantageous embodiment of a seat element 1, in which several seats are combined in the seat element 1, i.e. it has several seat parts 2, it is proposed according to a further advantageous feature that it has a back part 3 common to the seat parts 2 of the seat element 1. The back part 3 then extends from the left to the right side of the seat element 1 and can be folded together for all seats. The toothing of the back part 32 can also be attached only to the left and right side of the seat element 1 .

the 6 shows a front view or a partial cross section of such a seat element 1 according to the invention in the seating position with two seat parts 2 which are arranged in a row next to each other and each form a single seat for one person. The seat element 1 comprises a common support structure for both seat parts 2, which has only four folding folding feet 6, 7, 8, 9, which are arranged in pairs on the left and right side of the seat element 1 and which fold synchronously when the seat element 1 is converted. The seat element 1 has a Standing and seat lock 22, 27, each of which includes a sliding latch 28 attached to the left 6, 7 and right 8, 9 folding folding feet.

The foot cross-connection part 25 and the seat cross-connection part 24 are formed corresponding to the width of the seat member 1 and range from the left to the right side of the seat member 1. The seat parts 2 are attached to respective seat side parts 19 which are fixed to the seat cross-connection part 24 and are individually foldable . In the 6 the seat parts 1 are folded up by their respective counterweight 37 .

A seat side part 19 is fastened to the seat cross-connection part 24 on the left and right side of a seat part 2 . The two outer seat side parts 19 also form the bearing for the upper foot parts 10, 12, 14, 16 of the folding folding feet 6, 7, 8, 9, i.e. on the outer seat side parts 19 are the upper foot parts 10, 12, 14, 16 of the folding feet 6, 7, 8, 9 pivotally attached.

The seat element 1 has a continuous back part 3 common to the seat parts 2 of the seat element 1 . The back part 3 extends with a continuous upper transverse tube 43 from the left to the right side of the seat element 1 and can be folded together for all seats. The back part 3 is fastened to the seat side parts 19 of the seat parts 2 and is foldably mounted on them. The back part toothing 32 is attached only to the left and right sides of the seat element 1, ie to the two outer seat side parts 19, and to the left and right sides of the back part 3.

The total width of the seat element 1 (overall, from the left outside to the right outside) is 100 cm in this exemplary embodiment with two seat parts. Appropriate widths are preferably between 80 cm and 120 cm.

To convert the seat element 1 from the seated position to the standing position, the sliding bolts 28 are pushed inwards, as a result of which the seat lock 22 is released. The back part 3 can then be folded forwards, the fastening folding feet 6, 7, 8, 9 folding over at the same time through the back part toothing 32 and the seat element 1 lowering down into the standing room position on the grandstand step 4 and forming a step for spectators.

the 7 shows a front view or a partial cross section of a seat element 1 according to the invention in the seating position with three seat parts 2 which are arranged in a row next to each other and each form a single seat for one person. The seat element 1 comprises a common support structure for the three seat parts 2, which has only four foldable fastening folding feet 6, 7, 8, 9, which are arranged in pairs on the left and right side of the seat element 1 and which fold synchronously when the seat element 1 is converted. The seat element 1 has a stand-up and seat-down lock 22, 27, which includes a sliding bolt 28 attached to the left 6, 7 and right 8, 9 folding folding feet.

The foot cross-connection part 25 and the seat cross-connection part 24 are formed corresponding to the width of the seat member 1 and range from the left to the right side of the seat member 1. The seat parts 2 are attached to respective seat side parts 19 which are fixed to the seat cross-connection part 24 and are individually foldable . In the 6 the seat parts 2 are folded up by their respective counterweight 37 .

A seat side part 19 is fastened to the seat cross-connection part 24 on the left and right side of a seat part 2 . The two outer seat side parts 19 also form the bearing for the upper foot parts 10, 12, 14, 16 of the folding folding feet 6, 7, 8, 9, that is, on the outer ones Seat side parts 19 are each the upper foot parts 10, 12, 14, 16 of the folding feet 6, 7, 8, 9 pivotally mounted.

The seat element 1 has a continuous back part 3 common to the seat parts 2 of the seat element 1 . The back part 3 extends with a continuous upper transverse tube 43 from the left to the right side of the seat element 1 and can be folded together for all seats. The back part 3 is fastened to the seat side parts 19 of the seat parts 2 and is foldably mounted on them. The back part toothing 32 is attached only to the left and right sides of the seat element 1, ie to the two outer seat side parts 19, and to the left and right sides of the back part 3.

The total width of the seat element 1 (overall, from the left outside to the right outside) is 150 cm in this exemplary embodiment with three seat parts. Appropriate widths are preferably between 120 cm and 180 cm.

To convert the seat element 1 from the seated position to the standing position, the sliding bolts 28 are pushed inwards, as a result of which the seat lock 22 is released. The back part 3 can then be folded forwards, the fastening folding feet 6, 7, 8, 9 folding over at the same time through the back part toothing 32 and the seat element 1 lowering down into the standing room position on the grandstand step 4 and forming a step for spectators.

the 8 shows a side view and a partial cross-section of the left side of an opposite 1 modified seat element 1 in the standing room position. According to the seat element 1 1 it differs only by a different design of the foot cross-connection part 25 and the standing and seat lock 22, 27. The foot cross-connection part 25 is divided lengthwise into upper and lower strips in this embodiment.

The standing and seat locks 22, 27 include a common, laterally displaceable bolt 52. It has a locking pin 53 which engages in the standing position in a locking slot 30 of the folded back part 3 and engages.

The height HS of the seat element 1 in the standing room position, ie the height of the stepping surface 5 above the grandstand step 4, is 18 cm in this exemplary embodiment. This height HS can be designed variably in terms of construction and can also be designed to be higher or lower. For example, it can be half the difference in height between adjacent grandstand levels 4 . In this case, the step surface 5 is arranged halfway up between the horizontal step surfaces of two adjacent grandstand steps 4 when the seat element 1 is in the standing room position. The height difference between adjacent grandstand steps 4, ie the height of the step walls, is usually between 25 cm and 50 cm.

The length LS of the seat element 1 in the standing room position, which is equal to or slightly greater than the length of the step surface 5, is 40 cm in this exemplary embodiment. This length HS can be designed to be variable in terms of construction and can also be made larger or smaller. If the length LS of the seat element 1 is about half the depth of a horizontal step surface of a grandstand step 4, a uniform depth staggering of the grandstand with standing room is achieved.

the 9 shows the seat element 1 of FIG 8 in the seated position. In this, the locking pins 53 of the locking bar 52 each engage in a tab 54 welded to the upper front foot part 10, 14 and snap into place.

The overall height H of the seat element 1 in the seating position with the back part 3 folded up is 80 cm in this exemplary embodiment. This height H can be designed to be variable in terms of construction and can also be designed to be higher or lower. The total length L of the seat element 1 in the seating position with the back part 3 folded up and the seat part 2 folded up is 26 cm in this exemplary embodiment. The seat element 1 can advantageously have a small length L due to its construction. This length L is preferably considerably smaller than the typical depth of a grandstand step 4, which is usually between 70 cm and 110 cm. In this case, on the one hand, there is enough legroom for a user of the seat element 1 and, on the other hand, a wide aisle or escape route is free when the seat part 2 is folded up.

the 10 shows a perspective view too 8 with a view of the tread surface 5, the left side and the rear of the seat element 1. The seat cross-connection part 24 and two spacers 26 attached underneath can be seen here.

the 11 shows a perspective view of the seat element 1 of FIG 9 from the front looking at the right side of the seat element 1, the underside of the folded-up seat part 2, the front of the back part 3 and the foot cross-connection part 25 with the seat lock 22 on the left and right front fastening folding foot 6, 8.

The convertible, collapsible and foldable seat element 1 for a grandstand that can be used either as a standing or seated grandstand comprises a seat part 2 and a foldable back part 3, which can be folded down onto the seat part 2 in the standing room position of the seat element 1 and a seat element 1 that covers the top Appearance surface 5 forms a standing platform. The seat element 1 has four foldable fastening folding feet 6, 7, 8, 9, each consisting of an upper and a lower pivotable foot part 10-17. The lower foot parts 11, 13, 15, 17 are at the bottom Floor plates 18 and the upper foot parts 10, 12, 14, 16 are mounted on seat side parts 19 at the top. The upper ends of the lower foot parts 11, 13, 15, 17 and the lower ends of the upper foot parts 10, 12, 14, 16 are mounted on foot side connection parts 20, a left 7 and a right 9 folding foot fastening being interlocked there with foot part teeth 21. A seat lock 22 secures foot parts 10, 11, 14, 15 in the seated position against pivoting forward. Seat side parts 19 are fastened to a seat cross-connection part 24, on which the upper foot parts 10, 12, 14, 16 and/or a seat part 2 and/or the back part 3 are mounted.

The seat element 1 is equipped with a special folding function. In this case, the back part 3 is used as a lever, which engages in the rear fastening folding feet 7, 9 through a back part toothing 32. This enables the seat element 1 to be set up easily and quickly from the standing position to the seating position. The upper rear foot parts 12, 16 are also connected to the lower rear foot parts 13, 17 via foot part teeth. The opposing torques of the back part and foot part toothing 32, 21 cause the seat element 1 to rise up linearly. The rear 7, 9 and front 6, 8 folding feet are connected to the middle joints by means of the foot side connection parts 20 for synchronous movement. This prevents the seat element 1 from tipping backwards or forwards during conversion.

When the back part 3 is raised or folded up, the back part toothing 32 of the back part 3 with the rear upper foot parts 12, 16 and the foot part toothing 21 of the rear upper foot parts 12, 16 with the rear lower foot parts 13, 17 unfold or unfold evenly of the seat element 1 from the standing position to the seating position. At the same time, the pivoting movement of the lower and upper foot parts 10-17 in the stretched position, the seat part 2 is brought upwards and the foot cross-connection part 25, which serves as a front panel and is connected to the foot side connection parts 20, is shifted to the rear, where it is secured to the upper front foot parts 10, 14 is used to lock the seat element 1 in the seating position. Because of the toothing of the back part and the foot part 32, 21, the back part 3 is also automatically locked in the folded-up position without the need for an additional locking device.

To fold the seat element 1 from the seated position into the standing position, the seat lock 22 is opened. Then the back part 3 can be folded forward and down. When the back part 3 is folded forward or swiveled down, the back part toothing 32 of the back part 3 with the rear upper foot parts 12, 16 and the foot part toothing 21 of the rear upper foot parts 12, 16 with the rear lower foot parts 13, 17 ensure that the seat element 1 folds together evenly from the seated position to the standing position. At the same time, due to the pivoting movement of the lower and upper foot parts 10-17 into the folded position, the seat part 2 is brought down and the foot transverse connection part 25 serving as a front panel, which is connected to the foot side connection parts 20, is shifted forward, where it is connected by the The engagement of the bolts 52 attached to the foot cross-connection part 25 into the locking slots 30 on the front underside of the back part 3 serves to lock the seat element 1 in the standing room position. Because of the toothing of the back part and the foot part 32, 21, the folding feet 6, 7, 8, 9 are also automatically locked in the folded position without the need for an additional locking device.

It can be seen that the conversion of the seat element 1 from the standing position to the seating position and back is possible quickly and easily and without installing and removing seat parts. The seat element remains anchored to the floor panels 18 on the stage 4 of the grandstand. Locking it in the respective position is also easy.

the 12 shows a perspective view of the seat element 1 of FIG 9 from behind with a view of the left side of the seat element 1, the top of the folded-up seat part 2, the rear of the back part 3 and the seat cross-connection part 24. The left and right base plate 18, with which the fastening folding feet 6, 7, 8, 9 on the grandstand step 4 are attached are also clearly visible.

reference list

1

seat element

2

seat part

3

back part

4

grandstand step

5

performance area

6

Mounting folding foot left front

7

Fastening folding foot left behind

8th

Fastening folding foot on the right front

9

Fastening folding foot on the right rear

10

upper foot part left front

11

lower foot part left front

12

upper left rear foot piece

13

lower left rear foot piece

14

upper foot part right front

15

lower foot part right front

16

upper right rear foot piece

17

bottom right rear foot piece

18

bottom plate

19

seat side panel

20

foot side connection part

21

foot part toothing

22

seat lock

23

retaining bolts

24

Seat Cross Link

25

foot cross-connection part

26

spacer

27

standing room locking

28

sliding latch

29

cones

30

locking slot

31

pan direction

32

serrated back

33

foot part stop

34

Back part swivel axis

35

back stop

36

Seat part swivel axis

37

counterweight

38

seat part stop

39

guide slot

40

Slider slot at top

41

slider slot below

42

disc spring

43

upper cross tube

44

lower cross tube

45

side pipe left

46

side pipe on the right

47

side tab

48

back padding

49

Long hole

50

slider bolt

51

gripping pin

52

bars

53

locking pin

54

tab

H

Height of seat element in seating position

HS

Height of seating element in standing position

L

Length of seat element in seated position

LS

Length of seat element in standing position

Claims (25)

1. Convertible, fold-up and fold-out seat element (1) for a grandstand that can optionally be used as a standing or sitting grandstand, which seat element can be used folded-up into a lower standing position as a standing platform of a standing grandstand and folded-out into an upper seating position as at least one seat of a sitting grandstand, comprising

   - at least one seat part (2) and

   - at least one associated foldable rear part (3), which,

   - in the standing position of the seat element (1),

   - can be folded down onto the seat part (2),

   - can be supported against the floor of a grandstand step (4), and

   - forms a stand-on surface (5), upwardly covering the seat element (1), of a standing platform,

   - and, in the seating position of the seat element (1),

   - can be folded open with respect to the seat part (2), and

   - forms a backrest for the seat part (2),

   - and a manually foldable support structure, by means of which the seat element (1) can be fastened to the floor of a grandstand step (4), wherein the support structure comprises at least one foldable fastening folding leg and is designed in such a way that the seat element (1) can be converted in a vertical lifting movement by a manual folding movement of the fastening folding leg from the seating position into the standing position and back,

   wherein

   - the support structure has four foldable fastening folding legs (6, 7, 8, 9), which, in relation to the viewing direction of a user of the seat element (1) sitting on a seat part (2) or standing on a stand-on surface (5) as intended,

   - are arranged in pairs on the left-hand and right-hand sides of the seat element (1), and

   - consist in each case of an upper (10, 12, 14, 16) and a lower (11, 13, 15, 17) leg section,

   characterized in that

   - the lower ends of the lower leg sections (11, 13, 15, 17) are fastened to a base plate (18), which can be fastened to the floor of a grandstand step (4), so that said leg sections can pivot forward and in parallel about a respective lower leg section hinge,

   - the upper ends of the upper leg sections (10, 12, 14, 16) are fastened to a seat side part (19) of the seat element (1) so as to be able to pivot forward and in parallel about a respective upper leg section hinge, and

   - the upper ends of the lower leg sections (11, 13, 15, 17) and the lower ends of the upper leg sections (10, 12, 14, 16), which are arranged in each case on a side of the seat element (1), are pivotably mounted in respective central leg section hinges in a common leg-end connecting part (20),

   - wherein a left-hand (7) and a right-hand (9) fastening folding leg have in each case, at the upper end of the lower leg section (13, 17) and at the lower end of the associated upper leg section (12, 16) of the fastening folding leg (7, 9), a correspondingly interlocking leg section toothing (21) for synchronizing the pivoting movement of the toothed leg sections (12, 13; 16, 17),

   - the support structure has a releasable seat lock (22), by means of which the leg sections (10, 11; 14, 15) can be secured in the seating position against pivoting forward out of the seating position,

   - and the seat element (1) comprises a seat transverse connecting part (24),

   - which is arranged on the rear side of the seat element (1),

   - which connects the left-hand side to the right-hand side of the seat element (1), and

   - are fastened to the seat side parts (19) to which the upper leg sections (10, 12; 14, 16) of two fastening folding legs (6, 7; 8, 9) are pivotably fastened and/or one seat part (2) is fastened and/or the rear part (3) is foldably mounted.
2. Seat element (1) according to the preceding claim, characterized in that it comprises a leg transverse connecting part (25), which connects the left-hand leg-end connecting part (20) to the right-hand leg-end connecting part (20).
3. Seat element (1) according to the preceding claim, characterized in that the leg transverse connecting part (25) is attached to the leg-end connecting parts (20) in front of the front fastening folding legs (6, 8).
4. Seat element (1) according to either of claims 2 to 3, characterized in that in the standing position, the front edge of the rear part (3) is supported by means of the leg transverse connecting part (25) on the floor of a grandstand step (4).
5. Seat element (1) according to any one of the preceding claims, characterized in that it comprises on its left-hand and right-hand sides in each case a seat side part (19), on which the front upper (10, 14) and rear upper (12, 16) leg sections of the fastening folding legs (6, 7; 8, 9) are pivotably mounted on the respective seat element side.
6. Seat element (1) according to any one of the preceding claims, characterized in that the seat part (2) is mounted so as to be rotatable about a horizontal seat part pivot axis (36) so that it is foldable in the seating position of the seat element (1) from an approximately horizontal position into an approximately vertical position.
7. Seat element (1) according to claim 6, characterized in that the seat part (2) is mounted in the upper end of a front upper leg section (10, 14).
8. Seat element (1) according to claim 6 or 7, characterized in that the seat part (2) is mounted in a seat side part (19).
9. Seat element (1) according to any one of claims 5 to 8, characterized in that the seat part (2) is designed in such a way that it automatically folds upward in the seating position of the seat element (1) as soon as a person sitting thereon stands up.
10. Seat element (1) according to any one of the preceding claims, characterized in that the lower leg sections (11, 13) on the left-hand side of the seat element (1) are pivotably together fastened to a left-hand base plate (18) and the lower leg sections (15, 17) on the right-hand side of the seat element (1) are pivotably together fastened to a right-hand base plate (18).
11. Seat element (1) according to any one of the preceding claims, characterized in that the leg section toothings (21) are arranged on the leg sections (12, 13; 16, 17) of the rear fastening folding legs (7, 9).
12. Seat element (1) according to any one of the preceding claims, characterized in that it has a rear part toothing (32) for synchronizing the pivoting movement of the rear part (3) with the pivoting movement of the leg sections (10-17) of the fastening folding legs (6, 7, 8, 9), which rear part toothing comprises in each case a toothing arranged on the upper ends of the upper leg sections (12, 16) of the left-hand (7) and the right-hand (9) rear fastening folding leg and a toothing of the lower end of the rear part (3) which engages in a corresponding manner therein.
13. Seat element (1) according to any one of the preceding claims, characterized in that at least one lower leg section (11, 13, 15, 17) has, at its lower end, a leg section stop (33), which rests on the base plate (18) in the seating position of the seat element (1).
14. Seat element (1) according to any one of the preceding claims, characterized in that the rear part (3) has, at its lower end, a rear part stop (35), which rests on the seat transverse connecting part (24) when the rear part (3) is folded upward into the seating position.
15. Seat element (1) according to any one of the preceding claims, characterized in that in the standing position, the seat transverse connecting part (24) is supported on the floor of a grandstand step (4).
16. Seat element (1) according to claim 15, characterized in that a spacer (26) is attached beneath the seat transverse connecting part (24).
17. Seat element (1) according to any one of the preceding claims, characterized in that in the standing position, the leg sections (10-17) are arranged under the folded-down rear part (3).
18. Seat element (1) according to any one of the preceding claims, characterized in that it has a releasable standing-position lock (22), by means of which the seat element (1) can be secured against folding open out of the standing position into the seating position.
19. Seat element (1) according to claim 18, characterized in that an actuating part (28) of the seat lock (22) is also designed to actuate the standing-position lock (27).
20. Seat element (1) according to any one of the preceding claims, characterized in that it is designed as an individual seat having a seat part (2).
21. Seat element (1) according to any one of the preceding claims, characterized in that it only has one seat part (2) and the seat part (2) forms an individual seat for only one person.
22. Seat element (1) according to any one of the preceding claims, characterized in that it has several seat parts (2) arranged side by side and each forming an individual seat for one person.
23. Seat element (1) according to any one of the preceding claims, characterized in that it has a seat part (2) which forms a seat bench for several persons sitting side by side.
24. Seat element (1) according to either of claims 22 to 23, characterized in that it has a rear part (3) common to the seat parts (2) of the seat element (1).
25. Grandstand, which can optionally be used as a standing or sitting grandstand, in particular in a stadium or an event hall, characterized in that it has seat elements (1) according to any one of the preceding claims.

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