DE19942444C1 - Seat for use with safety harness, e.g. for ski lift, casualty rescue device or carrousel, has eyelets around edges of seat surface for releasably fixing to safety harness - Google Patents

Abstract

The seat has a contoured seat surface (1) provided with a number of eyelets (2) for releasable fixing to a safety harness straps. A backrest (21) may be pivoted at the rear of the seat surface and similarly provided with eyelets for fixing to the safety harness, which may be provided with a height adjustable chest retraint.

Description

The present invention relates to a seat device for hanging transportation of people, for example in lifts, Carousels and the like fairground and Amusement facilities, for use in the hospital and Handicapped transport area, for example as a lifting device as well as a rescue device for rescuing people.

Seating of this type must be considered Functionality, security, as well as durability in part meet extremely conflicting requirements. Is functional such a seat device if this, among other things easy and uncomplicated getting in and out of Allows seat. Despite this requirement, a simple one Handling must prevent accidental safety Falling out of a seated person guaranteed in any case his. This means that security mechanisms must be provided be involved in handling the seat equipment either close by itself or practically from the disembarking person can be operated with. Aggravating In addition, depending on the intended use, the seat equipment Increase security to the individual's height Adapted people and the adaptation as easy as possible and without specialist personnel by the person to be transported should be made. With all of these requirements the seating device should be such that their Components exposed to little wear and tear Are easy to replace if necessary.

Seat devices are known from the prior art, such as for example in lifts for the transportation of Winter sports enthusiasts or hikers can be used on mountains. These seating devices consist essentially of one Steel structure with one attached to a rope suspended strut, at the free end of a seat board is mounted. There is usually a on the strut  Safety bracket swiveling and in a safety position lockable mounted, in which a seated person in front of one Is prevented from falling out of the seat.

Seats can also be swiveled in carousel systems as well as hydraulically or electrically driven holding bracket secured which a person with a predetermined pressure on press the seat, the point of attack of these seats depending on Kind of carousel the thighs, chest or shoulders of the Person.

Admittedly, these known seat devices meet in terms of Functionality and security the aforementioned Conditions. However, they have a complicated structure that requires maintenance by specialist personnel. in the the other known rigid steel structures are heavy and inflexible, so that their intended use is limited to a few certain conveyor systems limited.

From the aviation sector in particular is paragliding another type of seat device known, which, for. B. in the book "Paragliding, from beginner to professional" by C. Peter and T. Schlager is described in 1988 in the Bruckmann Publisher was published. This seating arrangement consists in essentially from a harness, in which one by a Hard shell stiffened seat is sewn. The harness has different adjustment locks for length adjustment individual straps, that is to adjust the sitting position of one Person as well as for limited adaptation to the height of the respective person. In addition, the belt guide is like this chosen that after closing all belts falling out the person is impossible.

Harnesses of this construction are light and easy too transport and store. However, their structure is extremely due to the individual security measures complicated; their handling therefore usually requires one Long instruction by trained specialists. About that in addition, such harnesses are generally sensitive to different loads such as rubbing, scratching or  But also cut against moisture, sunlight and similar environmental influences. Because careful treatment in Not possible within the scope of use mentioned at the beginning is, therefore, with premature wear and tear of individuals Computing components that require a total or part exchange makes necessary. Otherwise, any adjustment such harnesses to different body sizes despite the arrangement of adjustable locks is not possible. It will therefore different harness sizes are offered before buying must be tried out by the pilot.

Given this state of the art, it is a task of present invention, a novel seat device for Transport people to create in addition to the low requirements and Operating costs caused and their intended use if possible is diverse.

This task is carried out by a seating device with the features of claim 1 solved.

According to the invention, the seat device is for hanging Transporting people from a seat board and others a harness, the device to a transport device can be attached. According to the invention, the seat board has a number of eyelets to which the harness is detachably attached. By this configuration can separate the sensitive harness from generally made of robust material seat board manufactured and then simply assembled with the seat board become. In the out-door area of use, the harness is one exposed to significant weathering that is too relative leads to early material wear. By arranging eyelets or eyelet-like slits on the seat board, but it can Harness disassembled without problems and against a new one be replaced. Because the harness has no such recordings for example in the form of bags or the like serve to insert the seat board, as is particularly the case with  Paraglider harnesses are the case, this harness is relative inexpensive and therefore including the total cost of ownership Maintenance and repair of the seat device according to the invention low.

It is also provided that the harness, among other things Chest strap or rod which, with respect to the seat board in Height direction is slidable to an entry and Easily block or exit the harness to release. With this construction it is possible that the Seating equipment in a simple way even by inexperienced people can be used. For boarding the seat only the chest strap has to be moved up to the Clear the manhole in the harness. Once the person does that The harness is pulled down and thus locking the manhole in the harness. On unintentional falling out of a person With this measure, seating can already go as far as possible be prevented. This technical solution is therefore not only particularly inexpensive because of a variety of Locking mechanisms can be dispensed with, but also particularly easy and quick to use.

Further advantageous embodiments of the invention are Subject of the remaining claims.

The invention is more preferred below on the basis of Embodiments with reference to the accompanying Drawings explained in more detail.

Fig. 1 shows a perspective view of a harness according to a first preferred embodiment example, which can be looped to the seat device,

Fig. 2 shows the perspective view of a seat according to a preferred embodiment of the invention,

Fig. 3 shows a perspective view of a harness according to a second preferred embodiment and example

Fig. 4a, 4b shows in perspective view a harness according to a third preferred embodiment example of the invention.

According to the Fig. 1 and 2, the seat assembly according to the invention comprises at least a hard seat or seat board 1, are provided on which a number of lugs 2 and a harness 3, which can be looped into the eyes 2 of the seat shell.

In Fig. 1, the above-mentioned harness 3 is shown in the functional structure, but the individual straps are drawn in an unrealistic size ratio to each other.

Accordingly, the harness 3 according to the first preferred exemplary embodiment has a main belt 4 at the ends of which an eyelet 5 or hook for hanging the seat device is attached to a transport device (not shown), preferably sewn on. The main belt 4 is laid in a U-shape, the legs of which form two carrying straps 6 running on both sides of a seated person. On a web belt 7 connecting the two risers 6 (leg) of the U-shaped main belt 4 , a seat belt 8 which forms a kind of beam is fastened, preferably sewn on, perpendicular to the main belt 4 and corresponds to a predetermined distance (corresponds approximately to the depth of a conventional chair seat surface) extends) of Fig. 1 to the rear and thereby a seat plane spans together with the Steggurt. 7

At the end of the predetermined distance, the seat belt 8 is pulled upwards to form an essentially 90 ° loop and ends in a Y-shaped branching piece 9 . In the region of the branching piece 9 , a back belt 10 is fastened or sewn on to the latter and / or to the seat belt 8 in its central section. Also, the back strap 10 is placed into a U-shape, wherein the free, facing away from the attachment point on the seat belt 8 ends of the back belt 10 shaped U-on the legs of the main strap 4, that is to the risers 6 is fixed (preferably by sewing) are. This design creates a kind of basket for sitting people.

At this point, it should be noted that the two forwardly extending legs of the back belt 10 each have an adjustment option (not shown) for adjusting the distance between the carrying straps 6 and the upwardly drawn section of the seat belt 8 or the Y-shaped branching piece 9 can have in order to thereby change the angle of inclination of the upwardly drawn seat belt section relative to the seat belt section which also defines the seat plane.

Attached to the Y-shaped branching piece 9 are two shoulder straps 11 which run at a substantially parallel distance from one another, the two ends of which are fixed or looped onto the central section of a chest strap 12 . It should also be noted that the two shoulder straps 11 each advantageously have a length adjustment option just above the chest strap 12 so that they can be adapted to different body sizes of a person.

The chest belt 12 has at its two ends loop eyelets 14 through which the main belt 4 , that is, the two risers 6 are guided, in such a way that the chest belt 12 can be displaced along the risers 6 . The chest strap 12 can also have a length adjustment device (not shown) for adjusting the parallel spacing of the two carrying straps 6 from one another. In addition, a locking element 16 of a click or quick-lock lock is fastened in the middle of the chest strap 12, preferably via two V-shaped strap pieces 15 aligned with one another. Instead of the V-shaped belt pieces 15 , a single belt piece or a preferably triangular link plate can be used for fastening the closure element 16 to the chest belt 12 .

Finally, in the preferred embodiment of the invention according to FIG. 1, a central leg strap 17 is provided, which is attached at one end to the web section 7 of the main belt 4 and / or to the end section of the seat belt 8 and at the other end the counterpart required for the closure element 16 that is, the quick-release latching element 18 for the closure element 16 is attached. For length adjustment, an adjustment buckle can be provided on the shoulder straps 11 on the central leg strap similar to the adjustment options shown. With regard to the design of the leg strap 17 itself, structural modifications are of course also conceivable. For example, the central leg belt 17 can be a section of the seat belt 8 protruding beyond the main belt 4 . Furthermore, it is possible to attach the leg strap 17 directly to the seat shell, that is, to form it separately from the harness 3 .

According to FIG. 2, the seat shell consists of a crescent-shaped board 1, preferably made of a composite material, on the underside of which a guide rail 19 extending in the depth direction of the seat shell is formed or attached to it. This guide rail 19 forms a receiving groove in which the seat belt 8 can be inserted.

On the end curves of the seat shell, which are spaced apart in the width direction, the loop eyelets 2 are provided, through which the carrying straps 6 are guided. According to the preferred exemplary embodiment, the seat shell has two longitudinal slots in the region of the aforementioned end curves, the length of which is equal to or greater than the width of the carrying straps 6 . In the middle section of each longitudinal slot, a transverse slot is made in the seat shell, which is open towards the edge of the shell. The carrying straps 6 can be inserted through these transverse slots and then inserted into the longitudinal slots essentially without being crushed or kinked. As an alternative to this configuration, which is of course particularly inexpensive in terms of production, it would also be possible to simply make two through holes in the outer lateral edge region of the seat shell, into which correspondingly shaped eyelets or hooks, preferably made of metal, are hung. The risers 6 can then be guided through these hooks.

Regardless of the structural design of the eyelets 2 , they are positioned at such a point in the depth direction of the seat shell that the web belt 7 of the main belt 4 engages under the seat shell and the seat weight of a seated person is transferred completely to the web belt 7 via the seat shell and from there as tensile forces in the legs, that is, the risers 6 is passed on. The eyelets 2 themselves are therefore not exposed to any direct tensile load from the support force, but essentially serve to stabilize the seat shell against tilting movements and to prevent the web belt 7 from slipping off the underside of the seat pan.

A hinge device is provided on the rear edge of the seat shell according to FIG. 2, via which a shell-shaped backrest 21 is articulated on the seat shell. In the present case, the hinge 20 consists of two bearing bases 22 which are spaced apart in the width direction and are formed on the seat shell and which are bordered by two bearing bases 23 of the backrest 21 of the same design, a transverse bolt extending through the bearing bases 22 , 23 and thus articulating the backrest 21 with the seat shell connects. As an alternative to this construction, a simpler hinge is of course also conceivable, for example in the form of a cloth or strap attached to the seat shell and to the backrest 21 . Ultimately, it is also possible to transfer the hinge function to the seat belt 8 itself, particularly in the region of the 90 ° loop.

In the present exemplary embodiment, the hinge 20 on the side of the seat shell is formed in one piece with the guide rail 19 and is therefore highly resilient due to the greater accumulation of material in this area.

The backrest 21 is shaped in such a way that two edge regions lying opposite one another in the width direction are slightly curved forward, as a result of which the upper body of a seated person is surrounded by the backrest 21 in a protective manner. Two loop eyelets 24 are also formed in these two edge areas, the design of which corresponds to that of the eyelets 2 in the seat shell. On the back of the backrest 21 , guide rails in Y-shape are formed symmetrically, which are shown in broken lines in FIG. 2. The guide rails open on the lower edge of the backrest 21 on the hinge 20 and on the upper edge of the backrest 21 at two locations spaced apart in the width direction, at which two inlet eyelets 26 are also constructed as described above.

The assembly and operation of the invention Seating equipment is described below:

For the assembly of the harness 3 as well as the seat shell and the backrest 21 hinged thereto, the harness 3 is designed in the form shown in FIG. 1. Then the seat shell is placed on the seat belt 8 and the web belt 7 in such a way that the seat belt 8 is positioned in the guide rail 19 and the carrying straps 6 can be inserted into the eyelets 2 on the seat shell. In the correct position of the seat shell, the seat belt 8 and the Y-shaped branching piece 9 can be inserted exactly into the guide 25 on the rear of the backrest 21 , the shoulder belts 11 for fixing the backrest 21 in the harness 3 being inserted into the upper-edged eyelets 26 . As soon as the shoulder straps 11 and the seat belt 8 fit tightly against the backrest 21 , the back belt 10 can be inserted into the loop eyelets 24 which are spaced apart in the width direction, with which the assembly of the seat device is already completed.

As soon as the two risers 6 are attached and secured with their end eyelets 5 or snap hooks to a transport device, not shown, a person can take a seat in the seat device.

For this purpose, the chest strap 12 is shifted upward along the carrying straps 6 in order to create a sufficiently high entry opening. A person then positions himself on the seat shell in close contact with the backrest 21 and then shifts the chest strap 12 downward again along the carrying straps 6 until it is approximately at the level of the chest of the seated person. As a result of this downward movement of the chest strap 12 , the shoulder straps 11 attached to it are simultaneously pulled over the person's shoulder and come into contact with the person. Finally, the central leg strap 17 is passed between the legs of the person already seated and the click lock is engaged.

Depending on the body size of the person, the individual adjustment locks, in particular the locks 13 on the shoulder straps 11 (shown in FIG. 1) and on the central leg strap 17, are now adjusted such that the shoulder straps 11 exert conductive pressure on the person and put them on securely the seat shell holds. At the same time, the chest strap 12 prevents the person from tipping forward, while the central leg strap 17 makes it impossible for the person to slide out of the seat shell.

As is shown in particular in FIG. 1, the attachment points on the transport device should be spaced further apart than the length of the chest strap 12 including the loop eyes 14 attached to it. (1 in Fig. Indicated), thereby resulting in the the Einschlaufösen 14 is a kink in the risers 6 which on the chest strap 12 tension is applied, which depends substantially on the body weight of the seated person as well as the angle at which the Tragegurtabschnitte converge at the loop eyelets 14 of the chest strap 12 . Depending on how high this tension is, a static friction force is generated in the contact area between the insertion eyelets 14 and the risers 6 that is large enough that a displacement of the chest belt 12 along the risers 6 in a weight-loaded state is no longer possible, that is quasi self-locking is effected. This mechanism has the advantage that in the event of a failure of the click lock or in the event that the seated person has not or not properly closed the click lock, the chest belt 12 cannot be moved during the transport phase and thus holds the person securely in the seat device (fail-safe mechanism).

In order to get out of the seat device, the shoulder straps 11 are first widened by opening the length adjustment locks 13 . Then the seat equipment must be largely relieved of weight. This means that the seated person stands up and opens the click lock, whereupon the central leg strap 17 is released. Subsequently, the now relaxed chest strap 12 together with the shoulder straps 11 attached to it are shifted upward in order to create an exit opening, after which the harness 3 can simply be stripped off. In this process, the eyelets 2 , 24 and 26 reliably prevent the seat pan and / or the backrest 21 from hanging out of the harness 3 . At the same time, however, the eyelets 2 , 24 , 26 enable the seat device to be dismantled easily, for example by the operator of the transport device, in order to replace the harder harness 3 that is wearing more quickly, or parts thereof, if necessary.

FIG. 3 shows a harness 3 according to a second preferred exemplary embodiment of the invention, which can be looped in on the seat shell and the backrest according to FIG. 2. The harness 3 shown in Fig. 3 is similar to that of the first embodiment in many parts, so that will be discussed only to the different structural features of this below.

Accordingly, the main belt 4 in the harness 3 according to the second embodiment consists of three individual (separately manufactured) parts, namely two riser sections 6 a, and a U-shaped lower belt, which has a web belt 7 , which connects two riser sections 6 b. The two riser sections 6 b each have at their free ends a link ring 27, preferably made of metal, in which the riser sections 6 a and the free ends of the back belt 10 are looped. The chest strap 12 is also slidably held along the riser portions 6 a above the link rings 27 . In contrast to the first exemplary embodiment according to FIG. 1, however, in the second exemplary embodiment of the invention, the shoulder straps 11 are not firmly connected to the chest strap 12 , but are guided loosely over the chest strap 12 and end in one quick-release element 16 .

Of course, this construction also allows various modifications while maintaining the function described below. For example, the chest strap 12 can be fixed, that is, not longitudinally displaceable, connected to the carrying strap sections 6 a, for example sewn. This embodiment can also be provided in the first embodiment. Furthermore, the riser sections 6 b of the second embodiment can also be made of a rigid material, such as metal rods. The same also applies to the chest strap 12 , which in the second exemplary embodiment is not directly connected to the shoulder straps 11 and can therefore likewise be replaced by a metal rod with end loop eyelets 14 or fixing devices. It should be pointed out here that the metal rings 27 can be replaced by correspondingly shaped carabiners which can be opened so as to separate the harness 3 from the carrying and chest straps designed as metal rods.

In FIGS. 4a and 4b is shown a third embodiment in which the last above-described modification of the second embodiment is realized. As can be clearly seen from this, the chest and shoulder straps according to FIGS. 1 and 3 are now replaced by metal bars 28 and a metal bar as a chest strap 12 , which are formed separately from the remaining harness 3 . This harness 3 corresponds to that of the second exemplary embodiment according to FIG. 3, so that reference can be made to the above description sections at this point.

According to FIG. 4b, the metal rods 28 replacing the carrying straps are connected to a suspension device 30 which is attached to a transport device, not shown. The metal rod replacing the chest strap 12 is in the present case firmly connected to the metal rods 28, for example by welding. Alternatively, the metal rod can of course also formed end sleeves (not shown) which are pushed onto the metal bars 28 by means of a clamping screw, also not shown at a certain position along the metal bars 28 are locked.

On the free lower ends of the metal rods 28 there are hooks 29 in which the harness 3 according to FIG. 4b can be hooked onto the link rings 27 thereof.

For the function of the seat device according to the second and third The following example is given:  

Both seat devices are designed so that they can be put on by a person in a standing position. The chest strap is Concretely 12 of FIG. 3 pulled over the head of a person and then put the shoulder belts 11 via the shoulders and the Klickverschuß locked. Here, the shoulder straps are freely arranged over the chest strap 12 , which consequently remains slidable for optimal adjustment to the size of the person along the riser sections 6 a.

In the seating device of FIG. 4 are also placed 11 for application of the harness 3 in a standing posture of a person, the shoulder belts on their shoulders and then locks the click closure. The harness is adjusted to the height of the person using the adjustable buckles on the shoulder, leg and back straps.

In order to hang the person on the transport device, in the seat device according to FIG. 3 the hanging eyes 5 are hooked on and secured to correspondingly provided hooks (not shown). Also in the case of the seat device according to the second exemplary embodiment, the distance between the hooks on the transport device is greater than the length of the chest belt 12 , as a result of which tensile stress is applied to the chest belt 12 when the seat device is loaded, which in turn causes a static friction force on the risers 6 or riser sections 6 a is generated. As a result, fail-safe behavior of the seat device is also achieved here in the event that the leg strap and the shoulder straps are not closed.

The construction according to the third exemplary embodiment permits even easier handling of the seat device. It is provided here that the carrying straps and the chest strap 12 in the form of the metal rods 28 and the metal rod are already designed as permanently installed components of the transport device, that is to say separately from the actual seat device. In this case, the seat device to be put on and handled is merely reduced to the seat shell with backrest and to those belts which are necessary for holding the seat device to a standing person, that is to say the shoulder and leg belts 11 and 17 . This division also ensures the highest level of safety, since it is not possible to put on the seat equipment without closing the click lock. Only when the seat device is placed on the person can the person attach himself to the suspension carabiner 29 of the metal rods 28 via the articulation rings 27 , the chest strap 12 in the form of the metal rod being arranged quasi independently in front of the chest of the person now seated.

It has been shown that the seat device according to one of the Embodiments described above and their Variations of people with size differences of about 0.5 m are easy to use. Even children can seat device according to the invention can be safely accommodated, however, to increase safety, a type of seat wedge makes sense. A hard one is particularly suitable Insert that is placed on the seat shell and preferably on Hinge pin of the hinge joint is attached. This Inlay can also be fitted with loop eyelets like those Be seat shell provided. Such a deposit has the Advantage that additional fastening or adjusting means for Adaptation of the standard seating arrangement to smaller people are not required and therefore the seating is not becomes unnecessarily complicated.

Claims (25)

1. Seat device for hanging transport of people, which can be attached to a transport device, with a seat board ( 1 ) and a harness ( 3 ) designed for a device for fastening a person, characterized in that the seat board ( 1 ) has eyelets ( 2 ) on which the harness ( 3 ) is detachably attached. 2. Seat device according to claim 1, characterized by a fixed backrest ( 21 ) which also has eyelets ( 24 , 26 ) for releasable attachment to the harness ( 3 ). 3. Seat device according to one of the preceding claims, characterized in that the eyelets ( 2 , 24 , 26 ) are designed as loop eyelets in the form of slots in the seat board ( 1 ) and the backrest ( 21 ). 4. Seat device according to claim 2 or 3, characterized in that the seat board ( 1 ) and the backrest ( 21 ) via an hinge ( 20 ) are hinged together. 5. Seat device according to one of the preceding claims, characterized in that the harness ( 3 ) has two risers ( 6 ) which are connected via a web belt ( 7 ) to a U-shaped main belt ( 4 ) which the seat board ( 1st ) engages in the transverse direction and is guided through two eyelets ( 2 ) spaced apart in the transverse direction on the seat board ( 1 ). 6. Seat device according to claim 5, characterized in that the harness ( 3 ) has a seat belt ( 8 ) which engages under the seat board ( 1 ) at least in sections. 7. Seat device according to claim 6, characterized in that the seat belt ( 8 ) is fastened to a central section of the web belt ( 7 ), extends in the depth direction of the seat board ( 1 ), then the backrest ( 21 ) with the formation of two shoulder belts ( 11 ) ) to fall behind. 8. Seat device according to one of claims 5 to 7, characterized by a chest strap ( 12 ) which is held in a height-adjustable manner on the carrying straps ( 6 ). 9. Seat device according to claim 8, characterized in that the shoulder straps ( 11 ) through the eyelets ( 26 ) on an upper edge of the backrest ( 21 ) and then attached to their end portions on the chest strap ( 12 ), to which a quick-release element ( 16 ) is centrally located. 10. Seat device according to claim 7, characterized in that the shoulder straps ( 11 ) through the eyelets ( 26 ) on an upper edge of the backrest ( 21 ) are guided and are brought together at their end portions to form a quick-release element ( 16 ). 11. Seat device according to claim 9 or 10, characterized by a leg strap ( 17 ) which is formed in extension to the seat belt ( 8 ) or looped in at a front edge on the seat board ( 1 ) and at its free end a quick-release locking element ( 18 ) has which can be brought into engagement with the quick-release element ( 16 ). 12. Seat device according to one of claims 8 to 11, characterized in that the risers ( 6 ) are each divided into two separate riser sections ( 6 a, 6 b), which are connected to one another via a link ring ( 27 ), in which a Back belt ( 10 ) is looped in at both ends, which encompasses the backrest ( 21 ) on both sides and is fastened at its center section to the seat belt ( 8 ) approximately in the branching region to the shoulder belts ( 11 ). 13. Seat device according to claim 12, characterized in that the chest belt ( 12 ) above the articulation rings ( 27 ) on the riser sections ( 6 a) is arranged. 14. Seat device according to one of claims 10 to 11, characterized in that the carrying straps ( 6 ) have at their free ends articulation rings ( 27 ) into which a back belt ( 10 ) is looped at both ends, which the backrest ( 21 ) encompasses on both sides and is fastened at its center section to the seat belt ( 8 ) approximately in the branching region to the shoulder belts ( 11 ), the articulation rings ( 27 ) also being provided for articulating the harness ( 3 ) on a suspension device. 15. Seating device according to claim 14, characterized in that the suspension device comprises two belts or metal bars ( 28 ), at one end of which suspension carabiners ( 29 ) are arranged and to which a chest strap ( 12 ) or rod is attached, which the belts or metal bars ( 28 ) connects. 16. Seat device according to claim 15, characterized in that the chest strap ( 12 ) or rod is fixed or lockable to the straps or metal rods ( 28 ). 17. Seat device according to claim 1, characterized by a chest belt ( 12 ) or rod which is held relative to the seat board ( 1 ) displaceably in the vertical direction in order to optionally block an entry and exit opening in the harness ( 3 ). 18. Seat device according to claim 17, characterized in that the harness ( 3 ) has two risers ( 6 ) which are connected via a web belt ( 7 ) to a U-shaped main belt ( 4 ) which the seat board ( 1 ) in Reaches under the transverse direction and is guided on the seat board ( 1 ) by two eyelets ( 2 ) spaced apart in the transverse direction. 19. Seat device according to claim 18, characterized in that the harness ( 3 ) has a seat belt ( 8 ) which engages under the seat board ( 1 ) at least in sections. 20. Seat device according to claim 19, characterized in that the seat belt ( 8 ) is fastened to a central portion of the web belt ( 7 ), extends in the depth direction of the seat board ( 1 ), then a backrest ( 21 ) with the formation of two shoulder straps ( 11 ) ) to fall behind. 21. Seat device according to claim 20, characterized in that the backrest ( 21 ) on the seat board ( 1 ) is hinged. 22. Seat device according to one of claims 18 to 21, characterized in that the chest belt ( 12 ) or rod is held in a height-adjustable manner on the carrying straps ( 6 ). 23. Seat device according to claim 21 and 22, characterized in that the shoulder straps ( 11 ) through eyelets ( 26 ) on an upper edge of the backrest ( 21 ) and then attached to their end portions on the chest strap ( 12 ), to which a quick-release element ( 16 ) is arranged centrally. 24. Seat device according to claim 21 and 22, characterized in that the shoulder straps ( 11 ) are guided by eyelets ( 26 ) on an upper edge of the backrest ( 21 ) and are brought together at their end portions to form a quick-release element ( 16 ). 25. Seat device according to claim 23 or 24, characterized by a leg strap ( 17 ) which is formed in extension to the seat belt ( 8 ) or looped in at a front edge on the seat board ( 1 ) and at its free end a quick-release locking element ( 18 ) has which can be brought into engagement with the quick-release element ( 16 ).