EP1170242A1 - Stairway elevator - Google Patents

Abstract

A guide (1) movably mounted along a step holds a vertically movable load-suspension device which has a flap-up platform. The platform has two flap-up approach ramps and two separately operable barriers which flap up or down. The load-suspension device has two vertically movable barrier-operating bars each linked to the swivel axle of a barrier. A pre-tensioning device pushes up the platform which has a tilting lever cooperating with a stop belonging to the guide. Two lifting bars are attached to the platform, especially to the tilting lever and which each cooperate with a rotary stop on the barriers' swivel axles.

Description

The invention relates to a stair lift, in particular for disabled people with a Wheelchair, with a guide body mounted to move along a staircase which a load suspension device is held vertically displaceable and between a lowered stopping position and a raised driving position is movable, being a foldable platform with two foldable on the load suspension device Loading flaps and two separately operable, down or up Foldable barriers are arranged above.

Former stair lifts with a platform to accommodate a wheelchair user a lower and an upper guide, the upper guide being used simultaneously as Handrail served. As the angle of inclination of the stairs increased, the guides had to be set higher and higher so that the platform is not on the stairs got stuck, so that the usual size for a handrail was often exceeded and the space between the lower guide and the stairs is also covered had to become.

In newer systems there is a spindle motor in addition to the main motor, to lower the platform at the stops so that the guides are mounted lower can be. Such a system has a total of five motors (travel drive, Vertical drive, floor and barrier drive).

DE 42 11 870 C2 shows a stair lift with a load suspension device, the vertically displaceable relative to a guide rod mounted on guide rollers is arranged.

The object of the present invention is a known stair lift to develop in such a way that fewer drive motors and a simplified electrical control is sufficient.

• an der Lastaufnahmeeinrichtung zwei vertikal bewegbare Schranken-Betätigungsstangen angeordnet sind, die in der Fahrstellung jeweils mit einem Endabschnitt nach unten über die Lastaufnahmeeinrichtung vorstehen und jeweils an einer Schwenkachse einer Schranke angelenkt sind, wobei eine Schranken-Betätigungsstange bei Absenken der Lastaufnahmeeinrichtung in die Anhaltestellung bei Bodenkontakt des vorstehenden Endabschnitts nach oben bewegt wird und die entsprechende Schranke aus einer horizontalen Stellung in eine vertikale Stellung hochklappt,
• eine Vorspanneinrichtung die Plattform nach oben drückt und beim Anheben aus der Anhaltestellung im unbelasteten Zustand in eine leicht aufwärts geneigte Leerstellung bringt,
• die Plattform einen Kipphebel aufweist, der so angeordnet ist, daß er bei unbelasteter Plattform beim Anheben der Lastaufnahmeeinrichtung in die Fahrstellung sowie beim Absenken mit einem Kippanschlag des Führungskörpers zusammenwirkt und die Plattform hoch- bzw. herunterklappt, wobei der Kipphebel bei belasteter, in horizontaler Stellung befindlicher Plattform außer Eingriff mit dem Kippanschlag bleibt, und
• an der Plattform, insbesondere an dem Kipphebel, zwei Anhebestangen angelenkt sind, die mit je einem Drehanschlag auf den Schwenkachsen der Schranken zusammenwirken und die Schranken bei Absenken der unbelasteten Lastaufnahmeeinrichtung, wobei zunächst die Plattform hochgeklappt und die Schranken heruntergeklappt sind, beim Herunterklappen der Plattform in eine horizontale Stellung bewegen und umgekehrt.

This object is achieved according to the invention by a stair lift, in particular for the disabled with a wheelchair, with a guide body which is mounted to be movable along a staircase, on which a load suspension device is held vertically displaceably and can be moved between a lowered stopping position and a raised driving position, with the load suspension device a fold-up platform with two fold-up loading flaps and two separately operable, down or up foldable barriers are arranged, the stair elevator being characterized in that

• Two vertically movable barrier actuating rods are arranged on the load suspension device, each of which projects in the driving position with one end section downward above the load suspension device and are each articulated on a pivot axis of a barrier, a barrier actuation rod when the load suspension device is lowered into the stopping position when it comes into contact with the ground of the projecting end section is moved upwards and the corresponding barrier folds up from a horizontal position into a vertical position,
• a pretensioning device presses the platform upwards and when it is lifted out of the stopping position in the unloaded state into a slightly upward inclined empty position
• the platform has a rocker arm which is arranged so that when the platform is unloaded it interacts with a tilting stop of the guide body when the load suspension device is raised into the driving position and when it is lowered, and the platform is folded up or down, the rocker arm when the load is in the horizontal position platform remains out of engagement with the tilting stop, and
• on the platform, in particular on the rocker arm, two lifting rods are articulated, each of which cooperates with a rotary stop on the pivot axes of the barriers and the barriers when the unloaded load suspension device is lowered, the platform first being folded up and the barriers being folded down when the platform is folded down move a horizontal position and vice versa.

It is expediently provided that the barrier actuating rods in each case are provided with a roller at the lower end section.

It is preferably provided that the biasing device is a spring-loaded Has stop, with the platform folded down with the load handling device cooperates and pushes the unloaded platform up.

It can be provided that the tilt stop as an engagement opening for the rocker arm is trained.

The rotary stops are preferably offset by 90 ° to the barriers on the Swivel axes arranged.

The barrier actuating rods expediently have a locking device which is locked in the driving position with horizontal barriers and prevents the barriers from lifting.

The barrier actuating rods are preferably each interposed Locking bar connected to the swivel axes, each locking bar a locking projection for cooperation with a projection of the Has load suspension device.

Each locking bar preferably has a sliding bevel, which is the locking bar when the barriers move from the raised position to the horizontal Position moved past the projection.

In a preferred embodiment it is provided that each locking bar is horizontal Position of the barrier a slightly angled position relative to the barrier operating rod occupies so that when the barrier actuating rod is actuated a the locking projection out of cooperation with lateral force occurs on the projection of the load suspension device.

It can be provided that the loading flaps are connected to the barriers by means of pull ropes are connected so that the loading flaps when the barriers are folded down are folded up approximately vertically, with horizontal barriers folded up by approx. 45 ° are and with vertically folded barriers about horizontal or light are inclined downwards.

It can be provided that the load suspension device by means of a motor driven spindle is vertically movable relative to the guide body.

Alternatively it can be provided that the guide body along a first (lower) and a second (upper) guide rail is movably supported and one with a drive rail cooperating drive means, the Drive rail is formed by a perforated rod that is regular in the longitudinal direction spaced engagement openings and two continuous, opposed Has treads, wherein the drive device two gear-like, each other arranged oppositely and the perforated rod with a radial contact pressure between the receiving sheaves with continuous in the circumferential direction Has drive surfaces and radially projecting drive projections, wherein the drive protrusions with the engagement openings and the drive surfaces interact with the running surfaces in a positive and non-positive drive connection, and wherein a housing supporting the drive pulleys is pivotable on the Load suspension device is held, so that the course of the perforated rod is the altitude the load suspension device relative to the guide body.

In this variant it can also be provided that the perforated rod in the range of Stops and / or end points in the direction of the first (lower) guide rail is led.

It is preferably provided that a drive motor is fixed to the load suspension device is attached and has a gear, the housing around a shaft is pivoted.

Fig. 1 eine schematische Seitenansicht eines erfindungsgemäßen Treppenaufzugs in einer Fahrstellung zeigt, wobei aus Gründen der deutlicheren Darstellung Plattform, Auffahrklappen und Schranken sowie deren Betätigungseinrichtungen weggelassen sind;

Fig. 2 eine schematische Seitenansicht auf einem Treppenaufzug gemäß Fig. 1 zeigt, wobei Plattform, Auffahrklappen und Schranken sowie die zugehörigen Betätigungseinrichtungen dargestellt sind und der Antrieb mittels Lochstange und Antriebsscheiben erfolgt;

Fig. 3 eine Ansicht entsprechend Fig. 2 zeigt, wobei der vertikale Antrieb über eine motorisch angetriebene Spindel erfolgt;

Fig. 4, 5 und 6 das Zusammenwirken einer vertikal bewegbaren Schranken-Betätigungsstange mit einer Schranke erläutern;

Fig. 7 das Zusammenwirken einer Anhebestange für eine Schranke mit einem Drehanschlag auf einer Schwenkachse einer Schranke erläutert;

Fig. 8 und 9 das Zusammenwirken eines Kipphebels der Plattform mit einem Kippanschlag erläutern.

Further advantages and features of the invention result from the following description of preferred exemplary embodiments, wherein

1 shows a schematic side view of a stairlift according to the invention in a driving position, the platform, loading flaps and barriers and their actuating devices being omitted for reasons of clarity;

FIG. 2 shows a schematic side view of a stair elevator according to FIG. 1, the platform, loading flaps and barriers as well as the associated actuating devices being shown and being driven by means of a perforated rod and drive disks;

FIG. 3 shows a view corresponding to FIG. 2, the vertical drive being effected via a motor-driven spindle;

Figures 4, 5 and 6 explain the interaction of a vertically movable barrier actuating rod with a barrier;

7 explains the interaction of a lifting rod for a barrier with a rotary stop on a pivot axis of a barrier;

8 and 9 explain the interaction of a rocker arm of the platform with a rocker stop.

Fig. 1 shows a stairlift according to the invention, in the illustration the platform and the barriers are left out at the foot of a staircase a raised driving position, one shown as being essentially frame-shaped Guide body 1 with lower guide rollers 2 arranged in pairs a first, lower guide rail and upper, paired guide rollers 4 movably mounted on a second, upper guide rail 5 and is led. In the illustrated embodiment, the guide rails 3 and 5 together with vertical bars 6 a banister, the upper guide rail 5 serves as a handrail.

As can be seen from FIGS. 1 and 2, there is a load suspension device on the guide body 1 8 guided vertically displaceably, which receives a load to be transported, wherein the load suspension device 8 in the present case with vertical Guide rails 9 and cross members 10 is provided, on which a drive motor 11th and further drive elements to be explained are held.

A perforated rod 13 made from a flat steel strip by punching holes is made, is in an area between the guide rails 3 and 5 to the vertical rods 6 attached and extends substantially at a constant distance or parallel to the guide rails while they are in the initial area of the elevator before the bottom step 15 of the stairs down towards the first guide rail 3 is guided and in its lower end region approximately or completely runs vertically.

A gear 40 is flanged to the drive motor 11, on which a pair of gearwheels Drive disks 17, 18 are pivotally held, the perforated rod 13 positively and non-positively between them.

The perforated rod 13 has on its top and bottom, adjacent on both sides to the holes or engagement openings 20, opposing treads 23, 24 with which the drive pulleys interact.

The cylindrical drive disks have inserted bolts 25, the end portions protruding from the drive pulleys in the shape of a truncated cone, wherein the engagement openings of the perforated rod are correspondingly double frustoconical are trained.

Furthermore, the drive disks each have a lateral surface on their outer circumferential surfaces adjacent to the bolts in the circumferential direction continuous, annular or cylindrical drive surfaces with which the drive discs with the treads interact.

The drive disks 17, 18 are non-rotatably wedged on shafts 30, 31 on which Coupling gearwheels are also wedged in a manner fixed against relative rotation, so that the drive disks also same speed in the opposite direction of rotation coupled with each other are. The shafts 30, 31 are mounted in a housing 35, one Shaft against the other is spring-loaded and the contact pressure can be adjusted can e.g. 30% or 50% of the driving force is transmitted frictionally.

The housing 35 is pivotally held on a gear 40 so that the housing perform a pivoting movement about the longitudinal axis of the shaft 30 and thus one can follow the predetermined course of the perforated rod 30.

Fig. 2 shows the load suspension device 8 at the lower end point of its movement or in a lower end position, the drive motor 11, gear 40 and Drive disks 17, 18 existing drive device along the perforated rod 13 has been moved down. In an area before the lowest level 15 one Staircase is thus the load suspension device 8 in a position that a easy loading or driving up a wheelchair or similar on a horizontal Platform 50 of the load handling device allows.

The load suspension device must be used to move the stair elevator along the stairs 8 are first raised by a vertical height difference that the Height of one or the lowest level 15 of the stairs corresponds, since the load suspension device otherwise would hit the stairs.

For this purpose, the load suspension device 8 is in a first movement section moved vertically upwards, for which only the drive motor 11 are activated must, since the perforated rod 13 leading the load bearing device accordingly is guided vertically. As soon as the drive pulleys 17, 18 the curved transition section reach the perforated rod, the load suspension device also has one sufficient height is reached so that the elevator corresponds to the course of the perforated rod receives an inclined upward movement. The housing 35 that the Drive disks 17 and 18 holds, pivots automatically according to the local inclination or curvature of the perforated rod.

Since the load suspension device automatically and inevitably follows the course of the Perforated rod follows, the guide rails 3, 5 can be used as a banister have an expedient course, without the course of movement (advance) of the load suspension device to take into account. Here, the support frame in front of the first stage, for example, by 250 or more, for example 400 mm, what a lowering of the guide rails relative to the load suspension device a corresponding measure corresponds.

Fig. 3 shows an alternative embodiment of a stair lift, in which the vertical Movement movement of the load suspension device relative to the guide body by means of a threaded spindle 37 driven by a drive motor 36. The drive of the guide body can, for example, directly by driving the Guide rollers 2 and / or 4 take place.

To explain the other necessary for a disabled transport with a wheelchair Components such as platform, loading flaps and barriers are listed below 2 and 4 to 9 referenced.

A platform 50 is pivotally attached to the load suspension device 8 and can move from a substantially horizontal, loaded position to a space-saving vertical position can be folded up. Fig. 7 shows the storage of the platform 50 on the load suspension device 8 in a schematic side view, the pivoting movement taking place about a pivot axis 51. As Fig. 7 further shows, is in the platform 50 a biased by a spring (package of disc springs) 52 Stop bolt 53 arranged with a biasing force against the presses lower end portion of the load handling device. Through this pretensioner is achieved that when the platform or load suspension device is raised 8 in the empty (unloaded) state, the platform 50 slightly upwards is pivoted as soon as a rocker arm 55 with its free end section or its tip in the area of an engagement opening 56 one fixed to the guide body 1 connected tilt stop 58 comes, which ensures that at further startup of the unloaded load-bearing device 8 relative to the Guide body 1 and the tilt stop 58 firmly connected to it the empty platform is pivoted up (intermediate position Fig. 9, end position Fig. 8). Like Fig. 8 and 9 show, the then unloaded stop pin 53 is partially out of it Leadership in platform 50 stepped out.

To explain the actuation of the barriers, reference is made in particular to FIGS. 4 to 6 taken. There are two barriers 61, 62 which can be moved independently of one another (Fig. 2), in which the arranged on a staircase to the rising side Barrier also as a mountain barrier and the one arranged on the sloping side Barrier is also known as a valley barrier. At a breakpoint one Stair lift at the bottom of a staircase expediently both open Barriers by folding up vertically while at a breakpoint For safety reasons, only the mountain barrier is closed at the top of a staircase is open while the valley barrier must remain closed. This is according to the invention automatically realized as follows.

There are two vertically movable barrier actuating rods on the load suspension device 63 arranged in the driving position (Fig. 4: loaded, Fig. 6: unloaded) with one end section down from the load suspension device or project beyond, the lower end portion of the barrier operating rods 63 expediently each provided with a roller 64 is. 5 shows, a barrier operating lever 63 when lowering the Load suspension device at a stopping point of the stair lift in the stopping position by contact of the protruding end portion or roller 64 with the Floor moved upwards so that the associated barrier 61 or 62 (or both) folded up from a horizontal position (FIG. 4) into a vertical position (FIG. 5) becomes. Since the end section of the barrier actuating rod assigned to the valley barrier 63 not in contact when stopping in front of the top of stairs comes with the floor, the valley barrier automatically closes.

The barrier actuating rod 63 is interposed at its upper end Lock bar 66 connected to a link lever 67, which in turn on a pivot axis 68 of the barrier is attached. 4 and 5 further show the locking bar 66 has a locking projection 70 for cooperation with a corresponding projection 71 of the guide body 1, which on its Bottom is provided with a sliding bevel 72, which the locking bar at one downward movement of the barrier operating rod 63 on the locking projection 71 moved past.

7 to 9, there are two on the rocker arm 55 of the platform 50 Lifting rods 75 articulated, each with a rotary stop 76 on the Pivot axes 68 of the barriers and one fixedly attached to the guide body 1 Stop 78 cooperate and serve the barriers when lowering the unloaded load suspension device from the fully folded down position the barriers (Fig. 6) to the horizontal position (Fig. 7). How else are explained in detail when lowering the unloaded load suspension device the platform folded up and the barriers folded down, as shown in FIG. 6 shows, first of all, before the barrier actuating rods come into contact with the ground 63, the platform 50 by interaction of the rocker arm 55 with the engagement opening 56 of the tilt stop 58 from its vertical, space-saving Position is folded down horizontally and at the same time both barriers together through the lifting rods cooperating with the rotary stop 76 75 are raised from their folded down position to the horizontal position, 9 shows an intermediate position of this process.

As further shown in FIG. 7, the lifting rods 75 with the rotary stops 76 are not firmly connected, but cooperate with them via the fixed stops 78, which are attached to the guide body 1. This has a locking effect for the barriers in the horizontal position (Fig. 7), so that the barriers in this position against lifting (due to the locking projection 70 and projection 71 formed locking device) as well as against pushing down (due to the interaction of rotary stop 76, lifting rod 75 and stop 78) are secured.

1. Belastet abwärts: die Lastaufnahmeeinrichtung und somit die Plattform wird entsprechend dem Verlauf der Lochstange 13 (oder alternativ der Ansteuerung der Spindel 37) an Haltepunkten bzw. Endpunkten des Treppenaufzugs abgesenkt. Die Plattform ist zunächst waagerecht, die Schranken stehen horizontal. Nach Bodenkontakt der Rolle 64 einer oder beider Schranken-Betätigungsstangen 63 wird eine bzw. werden beide Schranken 61 und/oder 62 nach oben geklappt. Die Verriegelungswirkung des Verriegelungsvorsprungs 70 wird dadurch überwunden, daß aufgrund der abgewinkelten Anordnung von Schranken-Betätigungsstange 63 und Riegelstange 66 eine Querkraft am Verbindungspunkt zwischen beiden Stangen auftritt, die den Verriegelungsvorsprung 70 von dem entsprechenden Vorsprung 71 wegbewegt (in Fig. 4 nach links).

2. Belastet aufwärts: Hierbei ist zunächst die Plattform waagerecht, die Schranken sind senkrecht nach oben geklappt. Die Schranken bewegen sich aus der in Fig. 5 dargestellten Stellung aufgrund ihres Eigengewichts in die horizontale Stellung, wobei der Verriegelungsvorsprung 72 unter den Vorsprung 71 einrastet. Aufgrund des Zusammenwirkens der Drehanschläge 76 mit den Anhebestangen 75 und den Anschlägen 78 sind die Schranken auch gegen weiteres Herunterklappen bzw. Herunterdrücken gesichert (Fig. 7).

3. Leer aufwärts: Hierbei ist die Plattform zunächst horizontal, die Schranken sind vertikal nach oben geklappt. Wenn die Plattform nach oben gefahren wird, bewegen sich die Schranken aufgrund ihres Eigengewichts nach unten (ausgehend von der Stellung nach Fig. 5) und rasten ein (Fig. 4). Die Feder 52 hebt über den Anschlagbolzen 53 die Plattform leicht an, sobald der Kipphebel 55 mit seiner Spitze in die Eingriffsöffnung 56 kommt. Der Kipphebel 55 wird bei weiterem Anheben durch Zusammenwirken mit der Eingriffsöffnung 56 verschwenkt und bewegt die Plattform nach oben (Fig. 9). Die Anhebestangen 75 werden nach unten bewegt, so daß eine verzögerte Freigabe der Schranken durch das Zusammenwirken von Anhebestangen 75 und Drehanschlägen 76 sowie Anschlägen 78 eintritt und die Schranken über die Plattform nach unten geklappt werden (Fig. 8 bzw. 6).

4. Leer abwärts: Hierbei ist zunächst die Plattform hochgeklappt, die Schranken sind heruntergeklappt (Fig. 8 bzw. 6). Die Plattform wird zusammen mit der Lastaufnahmeeinrichtung 8 relativ zu dem Führungskörper 1 nach unten bewegt. Der Kipphebel 55 gelangt in die Eingriffsöffnung 56 (Fig. 9) und bewirkt eine Schwenkbewegung der Plattform in die horizontale Richtung. Gleichzeitig werden die Schranken aus der heruntergeklappten Stellung durch die Anhebestangen 75 und den Drehanschlag 76 in die horizontale Stellung bewegt (Fig. 9). Nach Bodenkontakt einer oder beider Rollen 64 wird eine Schranken-Betätigungsstange oder beide nach oben bewegt, so daß die jeweilige(n) Schranke(n) ebenfalls senkrecht nach oben geklappt wird (werden) (Fig. 5).

The functional sequence (up or down, loaded or unloaded) is as follows.

1. Loaded downwards: the load-bearing device and thus the platform is lowered in accordance with the course of the perforated rod 13 (or alternatively the control of the spindle 37) at stopping points or end points of the stair lift. The platform is initially horizontal, the barriers are horizontal. After the roller 64 makes contact with one or both of the barrier actuating rods 63, one or both of the barriers 61 and / or 62 are folded upward. The locking effect of the locking projection 70 is overcome in that, due to the angled arrangement of the barrier actuating rod 63 and the locking rod 66, a transverse force occurs at the connection point between the two rods, which moves the locking projection 70 away from the corresponding projection 71 (to the left in FIG. 4).

2. Load upwards: First the platform is horizontal, the barriers are folded vertically upwards. The barriers move from the position shown in FIG. 5 due to their own weight into the horizontal position, the locking projection 72 engaging under the projection 71. Due to the interaction of the rotary stops 76 with the lifting rods 75 and the stops 78, the barriers are also secured against further folding down or pressing down (FIG. 7).

3. Empty upwards: The platform is initially horizontal, the barriers are folded vertically upwards. When the platform is moved upwards, the barriers move downwards due to their own weight (starting from the position according to FIG. 5) and engage (FIG. 4). The spring 52 slightly raises the platform via the stop pin 53 as soon as the tip of the rocker arm 55 comes into the engagement opening 56. The rocker arm 55 is pivoted upon further lifting by cooperation with the engagement opening 56 and moves the platform upward (FIG. 9). The lifting bars 75 are moved downward, so that a delayed release of the barriers due to the interaction of lifting bars 75 and rotary stops 76 and stops 78 occurs and the barriers are folded down over the platform (FIGS. 8 and 6).

4. Empty downwards: First the platform is folded up, the barriers are folded down (Fig. 8 or 6). The platform, together with the load suspension device 8, is moved downwards relative to the guide body 1. The rocker arm 55 enters the engagement opening 56 (FIG. 9) and causes the platform to pivot in the horizontal direction. At the same time, the barriers are moved from the folded-down position to the horizontal position by the lifting rods 75 and the rotary stop 76 (FIG. 9). After one or both rollers 64 come into contact with the floor, a barrier actuating rod or both is moved upward, so that the respective barrier (s) is also (are) folded vertically upward (FIG. 5).

The loading flaps 54 (FIG. 2) are via a suitable traction means, for example a traction rope 57 or a chain, and a corresponding winding device 59 on the Pivot axes 68 of the barriers fixed with the folding movement of an associated one Barrier 61 or 62 coupled, so that a loading flap in the in Fig. 2 or 3, horizontal or slightly downward inclined position, if the associated barrier 61 or 62 in the vertically folded up Position while the ramp is in an approximate 45 ° upward direction folded position when the corresponding barrier is horizontal, and is folded vertically when the barrier is folded all the way down.

A safety device, not shown, is against "unauthorized" lifting the barrier actuating rod (s) 63 is provided while driving, so that in In such a case, the elevator stops immediately.

Furthermore, a safety device is present in a manner known per se, which is used a perforated rod 13 cooperate with it in an advantageous manner can.

In addition to the effort described at the beginning (five drive motors), according to the invention there is no need also an additional locking of the barriers, all barrier and floor switches and all safety contactors for the motors.

There is only one switch and the bypass circuit for monitoring the bolt in the area of the stop for barriers that open early (as for those that open early) Doors of passenger lifts).

List of reference symbols:

1

guide body

2

lower guide roller

3

lower guide rail

4

upper guide roller

5

upper guide rail

8th

Lifting accessory

10

traverse

11

drive motor

13

hole rod

15

lowest level

17

sheave

18

sheave

20

engagement opening

23, 24

treads

25

driving projections

30

wave

31

wave

35

casing

36

spindle motor

37

spindle

40

transmission

50

platform

51

swivel axis

52, 53

biasing means

54

Auffahrklappen

55

rocker arm

56

engagement opening

57

rope

58

tilt stop

59

takeup

61, 62

lists

63

operating rods

64

role

66

locking bar

67

Feedback lever

68

swivel axis

70

locking projection

71

head Start

72

Abgleitschräge

75

lift rods

76

rotary stop

78

attack

Claims (14)

Stair lift, in particular for disabled people with a wheelchair, with a guide body (1) mounted to be movable along a staircase, on which a load-bearing device (8) is held vertically displaceably and can be moved between a lowered stopping position and a raised driving position, with the load-bearing device (8 ) a fold-up platform (50) with two fold-up loading flaps (54) and two separately operable, foldable down or up barriers (61, 62) are arranged, characterized in that Two vertically movable barrier actuating rods (63) are arranged on the load-bearing device (8), each of which projects in the driving position with one end section downward above the load-bearing device (8) and each on a pivot axis (68) of a barrier (61, 62) are articulated, a barrier actuating rod (63) being moved upward when the load suspension device (8) is lowered into the stopping position when the projecting end section comes into contact with the floor, and the corresponding barrier (61, 62) folds up from the horizontal position into the vertical position, a pretensioning device (52, 53) presses the platform (50) upwards and, when lifting from the stopping position in the unloaded state, brings it into a slightly upward inclined empty position, the platform (50) has a rocker arm (55) which is arranged so that when the platform (50) is unloaded it interacts with a tilting stop (58) of the guide body (1) when the load suspension device (8) is raised into the driving position and when it is lowered , and the platform folds up or down, the rocker arm (55) remaining out of engagement with the tilting stop (58) when the platform (50) is loaded and in the horizontal position, and on the platform (50), in particular on the rocker arm (55), two lifting rods (75) are articulated, which each cooperate with a rotary stop (76) on the pivot axes (68) of the barriers (61, 62) and the barriers (61 , 62) when the unloaded load carrying device (8) is lowered, the platform (50) first being folded up and the barriers (61, 62) being folded down, when the platform (50) is being folded down, move it into a horizontal position and vice versa. Stairlift according to claim 1, characterized in that the barrier actuating rods (63) are each provided with a roller (64) at the lower end section. Stair lift according to Claim 1 or 2, characterized in that the pretensioning device has a spring-loaded stop (53) which, when the platform (50) is folded down, interacts with the load-bearing device (8) and presses the unloaded platform upwards. Stair lift according to one of the preceding claims, characterized in that the tilt stop (58) is designed as an engagement opening (56) for the rocker arm (55). Stairlift according to one of the preceding claims, characterized in that the rotary stops (76) are arranged offset by 90 ° with respect to the barriers (61, 62) on the pivot axes (68). Stairlift according to one of the preceding claims, characterized in that the barrier actuating rods (63) have a locking device (70, 71) which is locked in the driving position with horizontal barriers (61, 62) and prevents the barriers from lifting. Stair lift according to one of the preceding claims, characterized in that the barrier actuating rods (63) are each connected to the pivot axes (68) via an interposed locking bar (66), each locking bar (66) having a locking projection (70) for interacting with a Has projection (71) of the load suspension device (8). Stair lift according to Claim 7, characterized in that each locking bar (66) has a sliding slope (70) which moves the locking bar (66) past the projection (71) when the barriers move from the folded-up position into the horizontal position. Stairlift according to one of claims 7 or 8, characterized in that each locking bar (66) assumes a slightly angled position with respect to the barrier actuating rods (63) when the barrier is in a horizontal position, so that when the barrier actuating rod is actuated, a locking projection (70 ) occurs out of cooperation with the projection (71) of the load-bearing device (8) moving transverse force. Stair lift according to one of the preceding claims, characterized in that the loading flaps (54) are connected to the barriers (61, 62) by means of pull ropes (57), so that the opening flaps (54) are folded up approximately vertically when the barriers (61, 62) are folded down are, with horizontal barriers (61, 62) are folded up by about 45 ° and with vertically folded up barriers (61, 62) are inclined approximately horizontally or slightly downwards. Stair lift according to one of the preceding claims, characterized in that the load-bearing device (8) can be moved vertically relative to the guide body (1) by means of a motor (36) driven spindle (37). Stair lift according to one of claims 1 to 10, characterized in that the guide body (1) is mounted so as to be movable along a first (lower) (3) and a second (upper) guide rail (5) and a drive device which interacts with a drive rail (13) The drive rail is formed by a perforated rod (13) which has longitudinally spaced engagement openings (20) and two continuous, opposing running surfaces (23, 24), the drive device having two gearwheel-like, oppositely arranged and the perforated rod ( 13) with a radial contact pressure between the drive disks (17, 18) with continuous drive surfaces in the circumferential direction and radially projecting drive projections (25), the drive projections (25) with the engagement openings (20) and the drive surfaces with the running surfaces (23, 24) with positive and non-positive drive Connection cooperate, and a housing (35) carrying the drive disks (17, 18) is pivotally held on the load-bearing device (8) so that the course of the perforated rod (13) determines the height of the load-bearing device (8) relative to the guide body (1 ). Stairlift according to claim 12, characterized in that the perforated rod (13) is guided in the area of stops and / or end points in the direction of the first (lower) guide rail (3). Stairlift according to claim 12 or 13, characterized in that a drive motor (11) is fixedly attached to the load-bearing device (8) and has a gear (40), the housing (35) being held pivotably about a shaft (30).

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