WO2010091987A1

WO2010091987A1 - Furniture lift and method for transporting loads

Info

Publication number: WO2010091987A1
Application number: PCT/EP2010/051327
Authority: WO
Inventors: Jacques Dailly
Original assignee: Jacques Dailly
Priority date: 2009-02-12
Filing date: 2010-02-04
Publication date: 2010-08-19
Also published as: FR2942217B1; FR2942217A1

Abstract

The invention relates to a furniture lift for transporting loads from the inside of a high up room to an outside lower level or vice versa, comprising: a cradle-holder platform (36) directly and permanently mounted on a first outer vertical guide (32) so as to be translatably movable along said vertical guide, the cradle-holder platform being capable of removably receiving a cradle (16) in order to move said cradle along the first outer vertical guide between a second outer raised position (40) and a first outer lowered position (42) without the cradle being directly mounted on said first outer vertical guide; and a transfer platform (24) suitable for guiding the cradle between a first and the second outer raised positions (40, 62).

Description

FURNITURE MONITOR AND METHOD FOR TRANSPORTING LOADS

The invention relates to a furniture lift and a method of transporting loads from the interior of a room in height to the outside below or vice versa.

Such a furniture lift is described in patent application FR 2 897 857.

In the furniture lift described, the vertical outer guide and the high horizontal guide are made using vertical and horizontal rails. The nacelle is directly mounted on these rails. Thus, to pass from the horizontal rail to the vertical rail must be provided transfer means to safely detach the nacelle horizontal rail to mount directly on the vertical rail and vice versa. These transfer means are complex.

The invention aims to overcome this disadvantage by providing a furniture lift in which the transfer of the nacelle from the horizontal guide to the vertical guide is simplified.

It therefore relates to a furniture elevator comprising:

a nacelle to receive the loads to be transported,

- A high horizontal guide adapted to guide a horizontal displacement of the nacelle between an inner high position located inside the room and a first outer upper position located outside the room,

a first vertical vertical guide capable of guiding a vertical displacement of the nacelle, parallel to a facade of the room, between a second upper outer position and a first lower external position for loading or unloading the nacelle,

a first nacelle carrier plate directly permanently mounted on the first outer vertical guide so as to be movable in translation along this vertical guide, the nacelle carrier plate being adapted to removably receive the nacelle to move it along the first outer vertical guide between the second outer high position and the first outer lower position without the platform being directly mounted on this first vertical outer guide, and

- A transfer platform adapted to guide the nacelle between the first and second outer high positions. The term "removable" means that the platform can be loaded and unloaded from the platform tray without manual intervention. In fact, the nacelle is only temporarily secured to the platform-carrying platform during its vertical movement.

In the furniture lift above, it is no longer necessary to mount the platform directly on the vertical vertical guide during its vertical movement. This simplifies the realization of the furniture lift as the tray nacelle does not need to be detached from the vertical guide and then directly mounted on the horizontal guide. This furniture lift is therefore devoid of means for transferring the platform-carrying tray from the vertical guide to the horizontal guide. Embodiments of this furniture lift may include one or more of the following features: a the furniture lift consists of an inner vertical guide capable of guiding a vertical displacement of the platform between the inner upper position and an inner lower loading position; unloading the nacelle located inside the room; The furniture lift comprises a tailgate directly mounted permanently on the inner vertical guide so as to be movable in translation along the inner vertical guide, the tailgate being adapted to receive the nacelle removably to move along the guide vertical interior between the inner high and low positions without the platform being directly mounted on the inner vertical guide;

B the nacelle comprises a bottom and the furniture lift comprises means for moving the nacelle along the high horizontal guide between the upper inner position and the first upper outer position, these means being interposed between the bottom of the nacelle and the guide horizontal high;

B the furniture lift includes a telescopic tower supporting the outer vertical guide and the horizontal high guide, this telescopic tower comprising at least a first pair of scissors, each pair of scissors being formed of two hinged legs with respect to the another around a pivot placed between ends of these uprights, the lower ends of the first pair of scissors being movable between a spaced apart position and a constricted position in which the lower ends are closer together than in the retracted position to fold and, alternately, deploy the telescopic tower and the vertical guide is fixed on the pair of scissors at the pivot so that the distance between a vertical axis passing through the pivot and the platform bucket remains constant regardless of the height at which the tower is deployed. B the telescopic tower includes:

two pairs of scissors parallel and spaced from one another by a distance allowing the nacelle to pass between these two stacks, and a low horizontal guide capable of guiding a horizontal displacement of the nacelle, between these two pairs of scissors, from the first outer low position towards a second outer low position from which the nacelle can move vertically along a second outer vertical guide independent of the first outer vertical guide; the furniture lift includes: - a telescopic tower supporting the first vertical vertical guide and the horizontal high guide, this telescopic tower having a vertical face parallel to the direction in which extends the horizontal guide high, and - the first vertical guide outside is able to guide the displacement of the nacelle along this vertical face; the furniture lift comprises a second nacelle carrier plate directly mounted permanently on a second outer vertical guide so that the first and second carrier plates are simultaneously movable in translation in opposite directions along their vertical guides; respective; B each platform-carrying tray is movable in translation along the vertical guide or guides independently of the top horizontal guide.

The features listed above may be implemented independently of one another, and in particular, independently of the features necessary to simplify the transfer of the nacelle from the horizontal guide to the vertical guide.

These embodiments of the furniture lift also have the following advantages:

the use of an internal vertical guide makes it possible to simplify the loading and unloading of the loads inside the room;

- The use of a tailgate directly mounted on the inner vertical guide simplifies the transfer of the nacelle between the top horizontal guide and the inner vertical guide;

- Use platform displacement means interposed between the bottom of the nacelle and the top horizontal guide simplifies the realization of the furniture lift because the nacelle does not need to be suspended from the horizontal guide high;

the use of pairs of scissors makes it possible to produce a telescopic tower that can be deployed vertically while limiting the play in the horizontal direction; the use of two pairs of parallel scissors makes it possible to simply provide a space large enough for the platform to cross from one side to the other of the telescopic tower;

guiding the displacements of the nacelle along sides of the telescopic tower parallel to the direction in which the horizontal guide extends up makes it possible to place the telescopic tower closer to the facade of the premises and thus to limit the space requirement on the sidewalk of this telescopic tower; - Use a second nacelle platform movable in translation in a direction opposite to the first nacelle platform accelerates the move because as a nacelle goes up, at the same time, another nacelle can go down. The invention also relates to a method for transporting loads comprising:

the loading of the loads to be transported in a nacelle,

- Guidance using a horizontal guide top of a horizontal displacement of the nacelle between an inner high position located inside the room and a first outer upper position located outside the room,

- The guidance, with the aid of an external vertical guide, a vertical displacement of the nacelle, parallel to a facade of the room, between a second upper outer position to a first lower outer position loading or unloading of the nacelle, - the guidance of the nacelle between the first and second outer high positions,

- Receiving, removably, the nacelle on a nacelle tray directly mounted permanently on the vertical guide, then

the displacement of the platform-carrying platform along the vertical guide between the second upper outer position and the first outer lower position without the platform being directly mounted on the vertical outer guide.

The invention will be better understood on reading the description which follows, given solely by way of nonlimiting example and with reference to the drawings, in which: FIG. 1 is a diagrammatic illustration in front view of a furniture racks;

- Figure 2 is a schematic side view of a portion of the furniture lift of Figure 1;

- Figure 3 is a schematic illustration in plan view of a portion of the furniture lift of Figure 1;

- Figures 4 and 5 are schematic and perspective illustrations of a detail of a telescopic tower of the furniture lift of Figure 1 in positions, respectively, folded and deployed;

- Figure 6 is a schematic illustration of a first method of mounting a nacelle platform on the telescopic tower of the furniture lift of Figure 1;

FIG. 7 is a schematic and partial illustration of a second method of mounting the platform-carrying platform on the telescopic tower in side view;

- Figure 8 is a schematic illustration in top view of the second method of attachment of the nacelle plate on the telescopic tower; FIG. 9 is a schematic and partial illustration of a third method of mounting the platform-carrying platform on the telescopic tower in side view;

- Figures 10 and 11 are perspective illustrations of one end of the furniture elevator to be located inside the room to be moved;

- Figure 12 is a schematic and perspective illustration of a nacelle used in the furniture lift of Figure 1; and

FIG. 13 is a flowchart of a method of transporting loads using the furniture lift of FIG. 1. In these figures, the same references are used to designate the same elements.

In the rest of this description, the features and functions well known to those skilled in the art are not described in detail.

Figure 1 shows a furniture lift 2 in the deployed position in front of the facade 4 of a room 6. For example, the room 6 is a building. The facade 4 is substantially flat and extends mainly in a vertical plane.

The furniture lift 2 rests on a substantially horizontal floor 8. For example, the floor 8 is a sidewalk or a road.

To locate the different directions, in the following description, we use an orthogonal reference X, Y and Z where the X, Y directions are parallel, respectively, horizontally and vertically.

Here, the furniture lift 2 is deployed to transport loads 10 from the interior of the room 6 to the outside of this room, below, via an opening 12 formed in the facade 4. By example the opening 12 is a window of the local 6 located in height.

The loads 10 are, for example, boxes filled with objects to be moved. Here these boxes are stacked on top of each other and placed on trolleys 14 with wheels so as to facilitate their loading and unloading of a nacelle 16. The furniture lift 2 comprises a telescopic tower 20 which extends between a frame 22 and a platform 24. Here, the frame 22 is fixed without any degree of freedom on a transport tray. Here, the plate 25 is secured to the chassis of a truck 26.

To stabilize the frame 22 horizontally, the plate 25 is equipped with several jacks which rest on the ground 8 when the tower 20 is in its extended position. By way of illustration, only two jacks 28 and 30 have been shown.

In the deployed position, the platform 24 is placed substantially at the bottom of the opening 12.

The tower 20 is a telescopic tower that supports at least one vertical guide capable of guiding the vertical displacement of the nacelle 16 parallel to the Y direction. Here, the tower 20 is equipped with two vertical guides 32 and 34. guides are arranged on the tower 20 so that the vertical displacements of the nacelle 16 take place along the faces of the tower 20 which are perpendicular to the facade 4. Here, the vertical guides 32 and 34 are arranged on opposite sides of the tower 20. The guide 32 is able to guide the vertical displacement of the nacelle 16 from an outer high position 40 to an outer low position 42. Similarly, the guide 34 is able to guide the vertical displacement of the nacelle from an outer low position 46 to an outer high position 48. The positions 40, 42, 46 and 48 are shown in dashed lines in FIG.

For example, the guides 32 and 34 are identical and only the guide 32 will be described in more detail here.

The tower 20 also comprises a low horizontal guide 44 capable of guiding the displacement of the nacelle from the position 42 to the position 46 by passing through the tower 20. For example, the guide 44 is made from rails.

The furniture lift 2 comprises at least one platform-holder adapted to receive, removably, the nacelle 16. Here, the furniture lift 2 comprises two trays 36, 38 nacelle carriers. The trays 36 and 38 are mounted in translation directly, respectively, on the guides 32 and 34. The trays 36 and 38 are therefore only able to move along their respective vertical guide. With the exception of this difference, these trays are, for example, identical.

It is therefore understood that with the guides 32, 44 and 34, the nacelle 16 can go down along one side of the tower 20 and through this tower 20 to go back to the other side of the tower. The direction of displacement of the nacelle 16 along the tower 20 is represented by arrows 50 to 52.

Figure 2 shows the upper part of the furniture lift 2 in its extended position in side view. The platform 24 is secured to a horizontal telescopic guide 60. The guide 60 is movable between a folded position in which it is housed inside the platform 24 and an extended position shown in FIG. the deployed position, the guide 60 extends from the platform 24 to the interior of the room 6 through the window 12. The guide 60 is adapted to guide the movements of the nacelle 16 between an outer high position 62 and an inner high position 64 shown in dashed lines in FIG. 2. The position 62 is located at the outer end of the guide 60. The position 64 is located inside the room 6. The guide 60 allows a displacement of the nacelle between these two positions as represented by the arrow 66 which indicates the possible directions of movement. The end of the guide 60 located inside the room 6 ends with an elevator 68. This elevator 68 is able to move the nacelle 16 between the position 64 and an internal lower position 70 shown in solid lines in FIG. For example, the elevator 68 comprises an inner vertical guide 72 which extends substantially parallel to the Y direction inside the room 6. More precisely, this guide 72 extends between the guide 60 and a floor 74 of the room 6. The elevator 68 also comprises a tailgate 76 directly mounted in translation on the guide 72. The tailgate 76 is able to removably receive the nacelle 16. The tailgate 76 moves the nacelle 16 vertically between the positions 64 and 70 without this being directly mounted on the guide 72. For example, the guide 60 and the guide 72 are made from rails. FIG. 3 represents in plan view the platform 24 and the end of the guide 60 mechanically connected to this platform 24.

The upper face of the guide 60 comprises two rolling tracks 80, 82 intended to receive rollers, respectively 84, 85 and 86, 87 of the nacelle 16 (see FIG. 11). These tracks 80 and 82 extend parallel to the direction Z.

The platform 24 comprises: rolling tracks 88, 90 extending, on the platform 24, the rolling tracks 80 and 82 and, arranged at right angles, tracks 92 and 94 which extend the tracks 88 and 90 on one side to the plate 36 and on the other side to the plate 38. For example, the tracks 88, 90, 92 and 94 are made using rails that guide the displacement of the platform 16 when of his travels on the platform 24.

The upper faces of the trays 36 and 38 each comprise tracks 96 and 98 which form the extension of the tracks 92 and 94 when the trays 36, 38 are in the high positions corresponding to the positions 40, 48 of the nacelle 16. Here, the tracks 96, 98 are also made using rails.

Thus, the tracks 88, 90, 92 and 94 make it possible to guide the nacelle 16 from the position 62 to the position 40 and from the position 48 to the position 62.

A displacement of the nacelle 16 along these guides and rails is actuated, for example, by one or more electric motors.

The direction of movement of the nacelle on the transfer platform 24 is represented by arrows 100, 101, 102 and 103.

Figures 4 and 5 show two stacks 110 and 112 pairs of scissors, respectively, in a folded position and in an extended position.

Here, each stack 110 and 112 is formed of at least one pair of identical scissors and, preferably, several pairs of scissors. Each pair of scissors is formed of two uprights 114, 116 hinged relative to each other about a horizontal pivot 118. The pivot 118 is for example located in the middle of the length of each of the uprights 114 and 116. Each upright has a lower end facing the ground 8 in the deployed position and an upper end facing the platform 24 in the deployed position. The upper ends of the uprights of a pair of scissors are mechanically connected to the lower ends of the pair of scissors located immediately above via pivot connection 120 and 122. However, the upper ends of the uprights of the pair of scissors which is closest to the platform 24 are directly connected to this platform 24. Similarly, the lower ends 130 and 132 of the uprights of the pair of scissors closest to the frame 22 are directly connected to the frame 22 In order to allow deployment in the Y direction of each of the stacks, the lower ends 130 and 132 are slidably mounted within rails 134. These ends 130 and 134 are movable between a spaced position and a close position. In the remote position, the telescopic tower 20 is in a folded position. In the close position, the tower 20 is in the deployed position. The movement between the spaced apart and moved positions is actuated, for example, by electric motors.

FIG. 6 represents a first embodiment of the vertical guide 32. Here, this vertical guide is made using a telescopic bracket 140 which unfolds at the same time as the tower 20 is deployed. The section of the bracket 140 in the plane XZ comprises two planes 142 and 144 mechanically connected to one another and which extend parallel to the directions Z and X, respectively. The plane 142 forms a taxiway for wheels 146, 148 disposed on either side of this plane 142. The wheels 146 and 148 are biased by a spring, not shown, against the plane 142. These wheels 146 and 148 are integral without any degree of freedom of the plateau 36.

The plane 144 forms a running track for two wheels 150, 152 disposed on either side of this plane. The wheels 150 and 152 are mounted in a manner similar to that described for the wheels 146 and 148.

Since the planes 142 and 144 form a non-zero angle, this makes it possible to stabilize the displacement of the plate 36 in both the X and Z directions.

Figures 7 and 8 show another possible embodiment of the guide 32.

In this embodiment, the guide 32 is made using wheels fixed on each end of the uprights 114 of the stacks 110 and 112. The axis of rotation of these wheels is parallel to the direction Z. More precisely, the upper end of each upright 114 ends with a pair of wheels 160, 162 which wedge a rail 164 fixed without any degree of freedom to the plate 36. This rail 164 is sufficiently long in the Y direction to be always simultaneously stuck between at least two pairs of successive wheels of the stacks 110 and 112. For example, the wheels 160 and 162 are biased on either side against the rail 164 by means of not shown elastic means.

FIG. 9 represents a third embodiment of the guide 32. This embodiment is identical to that of FIG. 7 except that the wheels 162 and 164 are not fixed on the end of the uprights 114 but on both sides In this embodiment, the rail 164 is fixed without any degree of freedom to the plate 36 by one or more rigid crosspieces 166. The guide 34 of the plate 38 is made in a similar manner. However, if the guide 32 is on an outer face of the pairs of scissors, then the guide 34 is on the inside of these pairs of scissors and vice versa. This embodiment makes it possible to keep constant the horizontal distance between the plate 36 and the vertical axis passing through the pivots 118 and this regardless of the height on which the tower 20 is deployed.

Figures 10 and 11 show in more detail the guide 60 and the elevator 68. In Figures 10 and 11, the elevator 68 is shown in high and low positions corresponding respectively to the positions 64 and 70 of the nacelle 16.

In the embodiment shown in FIGS. 10 and 11, the tracks 80 and 82 are spaced from one another by a slot 170 intended to receive a pull hook from the platform 16 to move it horizontally on these tracks.

Here, the guide 72 is made from a pair of rails 172, 174 on which the tailgate 76 is directly mounted in translation. The movement of the tailgate 76 between the high and low positions is actuated, for example, by an electric motor 176.

FIG. 12 represents the nacelle 16. The nacelle 16 comprises a bottom 180 under which the casters 84 to 87 are mounted. The casters 84 to 87 are mounted free to rotate about an axis perpendicular to the plane of the bottom 180.

Hooks 182 and 184 for meshing with corresponding traction hooks are mounted on the nacelle 16.

The operation of the furniture lift 2 will now be described in more detail with regard to the method of FIG. 12 in the particular case of the move of the room 6.

Initially, during a step 200, the nacelle 16 is placed in the position 70 inside the room 6. In this position, the loads 10 are easily loaded inside the nacelle 16.

Once the platform 16 is loaded, the elevator 68 is actuated, during a step 202, to move the nacelle 16 from the position 70 to the position 64.

During a step 204, in the position 64, the nacelle 16 is hooked to a pull hook. Then, during a step 206, the nacelle 16 is pulled by the hook from the position 64 to the position 62 and then beyond the position 62 to reach the tracks 92 and 94. The nacelle 16 thus makes a displacement horizontal in which the rollers 84 to 87 roll on the tracks 80 to 82 to reach the platform 24. When the platform 16 reaches the tracks 62 and 94, it automatically drops off the previous hook traction and clings to a new pull hook which this time pulls it along the direction 103.

At the end of step 206, during a step 208, the nacelle 16 is received on the plate 36. The nacelle 16 has then reached the position 40. For example, the nacelle 16 is retained on the plate 36 by thrusts throughout the duration of the displacement of this plateau.

During a step 210, the plate 36 descends vertically platform nacelle 16 to reach position 42. In position 42, nacelle 16 is discharged. For example, the loads 10 are transferred from the nacelle 16 to a moving truck parked at the bottom of the furniture elevator 2.

Then, during a step 212, a traction hook engages the platform 16 and the tracte along the direction 51 until it is received on the plate 38. In this step 212, the nacelle 16 through the tower 20 passing between the two stacks 110 and 112 and being guided by the guide 44. Once the nacelle 16 received on the plate 38, during a step 214, the plate 38 vertically ascends the nacelle 16 in the direction 52 to reach position 48.

In the position 48, during a step 216, the nacelle 16 is gripped by a traction hook which makes it roll on the tracks 92, 94. When the nacelle reaches the tracks 88, 90, the traction hook is replaced by another pull hook which rolls the basket on the tracks 88, 90 to the position 62 and beyond.

During a step 218, the nacelle 16 moves horizontally along the guide 60 from the position 62 to the position 64. Finally, during a step 220, the elevator 68 is actuated to lower the nacelle 16 of position 64 at position 70.

The process then returns to step 200.

Many other embodiments are possible. For example, the cylinders 28 and 30 can be directly mounted on the frame 22 so that after installation of the furniture elevator 22, the truck 26 can be removed. In another embodiment, the cylinders 28 and 30 are mounted on a trailer of a truck and the frame 22 is also mounted on this trailer.

The means of displacement of the nacelle 16 along the guide 60 have been described in the particular case where they are made using the running tracks.

80, 82 and casters 84 to 87. However, other embodiments are possible. For example, these means are made using a conveyor belt on which the bottom 180 or skids on which slides the bottom 180 of the nacelle. These embodiments described for the displacement means of the nacelle along the guide 60 may also be applied to achieve the displacement means of the nacelle 16 along the guide 44.

Similarly, the guides 44 and 60 are not necessarily rails.

The directions of movement 100 and 103 can be reversed or supplemented by displacements in opposite direction.

The embodiment of the guide 32 described with reference to FIG. 6 can be adapted to keep the distance between the plate 36 and the vertical axis passing through the pivots 118 constant. For this, for example, the telescopic bracket 140 is fixed on this vertical axis and the plate 36 is mechanically connected to the wheels 146, 148, 150 and 152 by means of sleepers such as crosspieces 166. The furniture lift can include several nacelles that move independently of each other.

The furniture lift can also be used to transport loads from one point downwards to the inside of the room in height.

Claims

1. Furniture lifts for the transport of loads from the inside of a room in height to the outside below or vice versa, this furniture-hoist comprising:

a nacelle (16) for receiving the loads to be transported,

- A high horizontal guide (60) adapted to guide a horizontal displacement of the nacelle between an inner high position (64) located inside the room and a first outer upper position (62) located outside the room, and a first vertical vertical guide (32) capable of guiding a vertical displacement of the nacelle, parallel to a facade of the room, between a second upper outer position (40) and a first lower outer position (42) for loading or unloading of the the nacelle, characterized in that the furniture hoist comprises: a first nacelle carrier plate (36) directly permanently mounted on the first outer vertical guide (32) so as to be movable in translation along this vertical guide, the nacelle tray being adapted to removably receive the nacelle to move it along the first outer vertical guide between the second outer upper position (42) and the first position external bass (42) without the platform being directly mounted on this first vertical vertical guide, and

- A transfer platform (24) adapted to guide the nacelle between the first and second outer high positions (40, 62).

2. Furniture lift according to claim 1, wherein the furniture lift comprises an inner vertical guide (72) adapted to guide a vertical displacement of the nacelle between the inner high position (64) and an inner low position (70) of loading or unloading the nacelle located inside the premises.

3. Furniture lift according to claim 2, wherein the furniture lift comprises a tailgate (76) directly permanently mounted on the inner vertical guide (72) so as to be movable in translation along the inner vertical guide, the tailgate being adapted to receive the pod removably to move along the inner vertical guide between the inner high and low positions without the platform is directly mounted on the inner vertical guide.

4. Furniture lift according to any one of the preceding claims, wherein the nacelle comprises a bottom and the furniture lift comprises means (80, 82, 84 to 87) for moving the nacelle along the top horizontal guide between the inner high position and the first high position external, these means being interposed between the bottom of the nacelle and the top horizontal guide.

A furniture lift as claimed in any one of the preceding claims, wherein:

the furniture lift comprises a telescopic tower (20) supporting the first outer vertical guide (32) and the upper horizontal guide (60), this telescopic tower comprising at least one pair of scissors, each pair of scissors being formed of two uprights (114, 116) articulated relative to each other about a pivot (118) placed between ends of these uprights, the lower ends of the first pair of scissors being movable between a spaced position and a position constricted in which the lower ends are closer than in the retracted position to fold and, alternately, deploy the telescopic tower, and .- the vertical guide is fixed on the pair of scissors at the pivot (118) so that the distance between a vertical axis passing through this pivot (118) and the platform-carrying platform (36, 38) remains constant regardless of the height at which the tower is deployed.

The furniture lift according to claim 5, wherein the telescopic tower (20) comprises:

two pairs of scissors parallel and spaced from one another by a distance allowing the nacelle (16) to pass between these two pairs, and

- A low horizontal guide (44) capable of guiding a horizontal displacement of the nacelle, between these two pairs of scissors, from the first outer lower position (42) to a second lower outer position (46) from which the nacelle can moving vertically along a second outer vertical guide (34) independent of the first outer vertical guide (32).

7. Furniture lift according to any one of the preceding claims, wherein the furniture lift comprises:

- a telescopic tower (20) supporting the first vertical outer guide (32) and the top horizontal guide (60), the telescopic tower having a vertical face parallel to the direction in which extends the horizontal guide high, and - the first external vertical guide (60) is adapted to guide the displacement of the nacelle along this vertical face.

8. Furniture lift according to any one of the preceding claims, wherein the furniture lift comprises a second nacelle tray (38) directly permanently mounted on a second vertical outer guide

(34) so that the first and second nacelle trays (36, 38) are simultaneously movable in translation in opposite directions along their respective vertical guides.

9. Furniture lift according to any one of the preceding claims, wherein each nacelle tray (36, 38) is movable in translation along the vertical guide or guides (32, 34) independently of the top horizontal guide (60). .

A method of transporting loads from the interior of a room vertically outwardly below or vice versa, the method comprising:

the loading (200) of the loads to be transported in a nacelle,

- the guide (206) with a horizontal guide top of a horizontal displacement of the nacelle between an inner high position located inside the room and a first outer upper position located outside the room,

- The guide (210), with the aid of an external vertical guide, a vertical displacement of the nacelle, parallel to a facade of the room, between a second upper outer position to a first lower outer position loading or unloading of the nacelle, characterized in that the method comprises:

the guide (206) of the nacelle between the first and second outer high positions,

- The receiving (208), removably, the nacelle on a nacelle tray directly mounted permanently on the vertical guide, and - the displacement (210) of the nacelle tray along the vertical guide between the second position the outer top and the first outer lower position without the platform being mounted directly on the outer vertical guide.