JP2021123467A - Folding type elevator - Google Patents

Abstract

To provide a folding type elevator characterized in that folding operation of the table is made safe and easy.SOLUTION: There is provided a folding type elevator that enable a wheelchair user to proceed over steps, with a table section raised and lowered with respect to a base section by an elevating link section in accordance with raising and lowering of a mast section in an operating state, wherein the table is rotatably attached to the vicinity of a lower end of the mast section. When not in use, a second base, the table section, and the elevating link section, which constitute the base section, can be folded on the mast side only when the table section is at its lowest position, thereby reducing an exclusive area occupied at storage so as not to interfere with passage of non-handicapped users.SELECTED DRAWING: Figure 2

Description

The present invention relates to an elevator used by a wheelchair or a person with a disability in the lower limbs to overcome a step such as a rising stile by installing it at the entrance of a house or the like.

Conventionally, slopes and elevators have been used to allow people with disabilities in wheelchairs and lower limbs to move from outdoors to indoors over the rising stiles provided at the entrance.
The merit of using the slope is that the number of parts is generally small, a light material such as an aluminum plate is often used, and the light weight makes it easy to install and store.
On the other hand, as a demerit, when installing in a place with a high step, it is necessary to lengthen the total length of the slope in order to make the slope gentle, and for example, the slope cannot be installed in a house with a narrow entrance.
On the other hand, the merit of using the elevator is that it is sufficient if a space where the elevator can be installed is secured, and there are few restrictions on the installation conditions as compared with the slope.
On the other hand, the disadvantage is that the slope can be easily installed and removed, while the elevator is heavy and cannot be easily moved. In addition, if it is installed at the entrance, the occupied area will be large, and it is possible that the elevator will be an obstacle for healthy people who do not use the elevator to enter and exit the entrance.

Therefore, in order to solve the demerit of using the above-mentioned elevator, the step eliminating machine described in Patent Document 1 has been proposed.
Since this step-eliminating machine can put the elevating device in an upward storage position when the step-eliminating machine is not used, it is said that a healthy person who does not use the step-eliminating machine does not get in the way when using the entrance.

JP-A-2010-58891

However, the step eliminating machine described in Patent Document 1 has the following problems.
First, since the storage frame puts the elevating device in the storage posture, the elevating device is used to elevate the elevating table, but the storage frame and the elevating device are not configured to be interlocked and can be operated independently. That is, if an attempt is made to change the posture to the storage posture when the lifting device is not completely at the lowest position, not only the lifting device cannot be stored correctly, but also the upper surface of the lifting table may interfere with the wall surface and damage the house.
Then, in order to change the posture from the usage posture to the storage posture, it is necessary for the caregiver or the user to operate the reversing transfer plate and the reversing slope by himself / herself to put them on the elevator, and the storage operation is performed. It's getting complicated.
In addition, there are restrictions on the entrances that can be installed due to the elevating device configuration, which is limited to use for straight-ahead boarding. For example, it is not possible to install the step-eliminating machine of Patent Document 1 for an L-shaped entrance / exit type entrance in which a rising stile is vertically attached to the entrance of the entrance.
In addition, stable installation is possible because the lower end is fixed to the floor while the storage frame is erected so as to contact or approach the side wall, but once the installation position is decided, the layout cannot be easily changed. There may be a disadvantage that the cost for housing construction is required.

Therefore, an object to be solved by the present invention is to provide a foldable elevator characterized by making the folding operation of the table safe and easy.

The foldable elevator of the present invention has a base portion composed of a first base and a second base rotatably pivotally attached to one end of the first base, and is pivotally attached to the second base so as to be openable and closable. The elevating link portion, the table portion supported by the elevating link portion, the middle mast supported on the first base, the outer mast externally inserted into the middle mast, and the outer mast relative to the middle mast. The mast portion provided with an elevating drive unit for raising and lowering the mast and the table portion are axially attached to the vicinity of the lower end of the outer mast, and one end of the table portion is fastened to bring the table portion to the mast portion side. An arm portion that is rotatably held and one end is axially attached to the holding portion, and the other end is rotatably axially attached to an elongated hole formed in the outer mast, and one end is attached to the arm portion. It is provided with a folding mechanism composed of telescopic means that are axially attached and the other end is axially attached to the lower end of the outer mast. In a foldable elevator that can fold the second base, the elevating link portion, and the table portion toward the mast portion by rolling and lifting one end of the arm portion toward the upper side of the outer mast. The mast portion is configured so that the urging screw screwed to the middle mast only at the lowest position of the table portion and the lever that enables stretching and shortening of the expansion / contraction means do not come into contact with each other.
Then, in order to prevent the foldable elevator from tipping over when the table portion is folded, a base reed formed by extending in a direction perpendicular to the mast portion in a plan view is fastened to one end of the first base. It is supposed to be.
Then, the first slope is rotatably attached to the table portion formed in a rectangular shape in a plan view on one side in the direction perpendicular to the mast portion, and the second slope is rotatably attached to the opposite side of the mast portion. A slope portion formed in a fan shape so that one end and the other end of the first slope are adjacent to each other when the table portion is at the lowest position in a plan view, which is fixed to one end of the second slope. By rotatably attaching the bridge portion to one side facing the first slope, the wheelchair can get on the table portion not only in the straight direction and the L-shaped direction but also in the diagonal direction. ..
Then, the slope shaft is inserted in the longitudinal direction of the first slope so that the square holes of the support plate fixed to both ends of the first slope and the corners of the slope shaft are synchronized, and one end of the slope shaft is described as described above. The roller support portion is fixed via the boss member of the table portion, and the other end is disposed on the lower surface of the corner slope via the first fixing portion fixed to the table portion to form the slope portion. By being urged by the guide member arranged on the side portion of the middle mast, the slope roller axially attached to one end of the roller support portion changes the posture of the first slope to the upright state when the table portion is raised. At the same time, one end of the slope shaft disposed on the lower surface of the corner slope urges the corner slope in the upright direction, so that the second slope anchoring the corner slope is simultaneously attached to the corner slope. The feature is that the posture can be changed to the standing state.
A handle portion is provided at one end of the bridge portion on the second slope side, which simplifies the folding operation of the table portion.
Further, it is characterized in that a grip portion that can be grasped by the user is provided on the upper portion of the mast portion.
Further, it is characterized in that it is provided with a lock portion for fixing any one of the table portion, the slope portion, the bridge portion and the mast portion so that the folded table portion does not return to the used state.

The foldable elevator of the present invention makes it possible to fold the second base, the elevating link part, the table part, the slope part, and the bridge part which form the base part to the mast part side arranged above the first base part when not in use. Moreover, by configuring the table part so that it can be folded only at the lowest position, it is possible to prevent the machine from being damaged due to some unbalanced load applied to the table part when the table part is returned to the used state at an unintended height. It has the effect of being able to prevent it.
Then, by fixing the reed base to the side of the base so as to be parallel to the rising stile side (step side), the effect that the foldable elevator in the folded state can be stably installed so as not to fall down. There is. Further, when the foldable elevator is installed at a position separated from the wall by a fixed distance by fastening the outriggers to one end of the reed base so as to be able to move forward and backward, there is an effect of preventing the foldable elevator from falling backward from the mast portion side. In addition, with the conventional technology, it is necessary to perform anchor work on the floor and wall surface to prevent the main body from falling after folding, and it is necessary to enlarge the base part to prevent it from falling, so the installation location such as the entrance is required. There were some situations where it was difficult to use it effectively, but by equipping it with an ass base and outriggers, there is no need for construction work and there is no need to increase the size of the constituent members, so the space for the installation location can be made wider and more effective. effective.
Then, the slope portion used for boarding from the floor surface to the table portion is provided with the first slope on the straight boarding side and the second slope on the L-shaped boarding side, and the first slope and the second slope are continuous. By attaching a corner slope, it is possible to get on the table from an oblique direction, which makes it possible to use the entrance widely without forming a dead space when installing a foldable elevator at the entrance. There is.
Then, the roller support portion anchored to one end of the first slope abuts on the guide member of the middle mast, so that the slope portion and the bridge portion are automatically adjusted to the bridging state and the fall prevention state according to the ascent and descent of the table portion. By making it possible to change it, there is an effect that the user can move safely when going up and down.
By providing a handle portion for folding operation at one end of the bridge portion on the second slope side, the operator can safely and easily connect the second base, the elevating link portion, the table portion, the slope portion, and the bridge portion. It has the effect of being foldable.
By providing a grip portion on the upper part of the mast portion that can be gripped by the user of the foldable elevator, the user can safely move the user to the destination by gripping the grip portion, and psychology. There is an effect that the stability can be satisfied.
Then, by providing a lock member so that the folded second base, the elevating link portion, the table portion, the slope portion, and the bridge portion do not return to the used state, the first base, the elevating link portion, and the table are unexpectedly provided. The return of the part, the slope part, and the bridge part has the effect of preventing a passerby from being pinched or an object placed on the floor from being pinched and damaged.

Overall perspective view showing the usage state of the foldable elevator 1 Overall perspective view showing the folded state of the foldable elevator 1 Overall plan view of the foldable elevator 1 Overall front view of the foldable elevator 1 Explanatory drawing showing the structure of the base part 2 Explanatory drawing which shows the structure of the base part 2 and the elevating link part 3 Explanatory drawing which shows the structure of the elevating link part 3 and the table part 4. Explanatory drawing which shows the structure of the bridge guide 24 of the base part 2. Explanatory drawing which shows the structure of the elevating drive part 8 Explanatory drawing which shows the structure of the outer mast 52 of the mast part 5 and the elevating drive part 8. Explanatory drawing showing the structure of the middle mast 51 and the outer mast 52 of the mast portion 5. Explanatory drawing which shows the structure of the folding mechanism 9. Explanatory drawing which shows the structure of the table part 4 and the mast part 5. Explanatory drawing which shows the structure of the table part 4, the slope part 6 and the bridge part 7. Explanatory drawing showing the relationship between the mast part 5 and the slope part 6 (a) the table part 4 at the lowest position (b) the explanatory view showing the relationship when the table part 4 rises. Cross-sectional view of the main part showing when the table part 4 of the foldable elevator 1 is raised. Cross-sectional view of the main part showing the lowest position of the table part 4 of the foldable elevator 1 Cross-sectional view of the main part showing the folded state of the table part 4 of the foldable elevator 1 Explanatory drawing which shows the middle of folding of the table part 4 of a foldable elevator 1. Schematic diagram showing the arrangement of the foldable elevator 1 at the entrance ((a) straight-ahead boarding (b) L-shaped boarding (c) diagonal boarding) Explanatory drawing showing a state in which wheelchair K is (a) going straight on the foldable elevator 1 (b) explanatory view showing a state of L-shaped boarding and diagonal boarding. Explanatory drawing which shows (a) lock part 12 when table part 4 is in a folded state (b) explanatory drawing which shows cover 13

Hereinafter, the foldable elevator 1 of the present invention will be described with reference to the drawings.
The foldable elevator 1 is mainly supported on a base portion 2, an elevating link portion 3 supported by the base portion 2, a table portion 4 supported by the elevating link portion 3, and a base portion 2. It is mainly composed of a mast portion 5, a slope portion 6 and a bridge portion 7 arranged on the outer periphery of the table portion 4, a table portion 4 and an elevating drive portion 8 for raising and lowering the mast portion 5.
Further, in the present embodiment, as shown in FIG. 1, a state in which the foldable elevator 1 is installed at the entrance provided with the rising stile F will be described. In addition, in order to clarify the description of the present invention, a part of the cover used for the mast portion in the drawing may be omitted.
Further, as shown in FIG. 3, the foldable elevator 1 will be described in a form in which the slope portion 6 is arranged on the entrance side of the entrance and the bridge portion 7 is arranged on the rising stile F side in a plan view. Although details are omitted, by rearranging the slope portion 6, the bridge portion 7, and the base reed 23 symmetrically, it is possible to correspond to the entrance having the layout opposite to that of FIG.

First, the base portion 2 will be described.
As shown in FIG. 5, the second base 22 is rotatably attached to the first base 21, and as shown in FIG. 1 and the like, the base reed 23 is parallel to the rising stile F on the side of the second base 22. As shown above, it is fixed to one end of the first base 21. A bridge guide 24 is fixed to the vicinity of one end of the base reed 23 on the mast portion 5 side in a direction perpendicular to the base reed 23.
First, the first base 21 is composed of a plurality of frames, and an adjuster whose protrusion amount can be adjusted by screw portions on both lower surfaces of the first base main body 21a arranged so as to extend in the vertical direction with respect to the rising stile F. 21b and 21b are screwed together. By tightening and loosening the screw portions, the adjusters 21b and 21b suppress the rattling due to the slope and unevenness of the floor surface to be installed so that the adjusters 21b and 21b can be stably installed. Then, the fulcrum brackets 21c and 21c that are formed so as to project in the direction of the second base body 22a, which will be described later, are fixed to the first base body 21a.
Next, in the second base 22, a plurality of frames are arranged and fixed in a rectangular shape to form the second base 22a main body, and the elevating link portion 3 described later can be housed in the second base main body 22a. There is a space. Then, a pair of fulcrum brackets 22b, 22b, ... At regular intervals are fixed to a frame on one side facing the first base main body 21a. Then, the rail members 22c, 22c are fixed to the inside of the frame facing the fulcrum brackets 22b, 22b, ... And the side frame. One end side of the rail members 22c and 22c has a substantially U-shape so that one end of the first link 31 and 31 of the elevating link portion 3 described later does not derail when rolling.
By axially attaching the fulcrum brackets 21c, 21c and 22b, 22b to the first base 21 and the second base 22 configured in this way, the second base 22 rotates upward in the side view with respect to the first base 21. It is configured to be possible.

Next, as shown in FIG. 8, the base reed 23 is inserted from one end of a reed frame 23a composed of a hollow rectangular pipe, and the outrigger 23b is pivotally attached to the inside of the reed frame 23a and the other end. Adjusters 23c and 23c are screwed to the tip.
First, the outrigger 23b is used to prevent the foldable elevator 1 from falling behind the mast portion 5 when the foldable elevator 1 is installed away from the entrance wall (for example, in a wide entrance or outdoors). It is a thing. Next, the adjusters 23c and 23c can be stably installed by suppressing rattling due to unevenness of the floor surface to be installed by tightening and loosening the screw portions in the same manner as the adjusters 21b and 21b of the base portion 2 described above. I have to. The reason why the adjusters 23c and 23c are arranged on the ground contact surface and the upper surface respectively is that one of the adjusters 23c is grounded when the left and right sides are rearranged as described above.
The base reed 23 configured in this way is fixed to one end of the first base main body 21a of the first base 21 on the rising stile F side.

Further, as shown in FIG. 8, the bridge guide 24 has an adjusting pole 24a of a certain length fixed to the upper surface of the assist frame 23a on the first base 21 side, and slides vertically on the adjusting pole 24a. The bridge guide main body 24b is freely fastened and configured.
The bridge guide main body 24b serves as a guide plate for the guide member 71b of the bridge portion 7, which will be described later. The guide member 71b slides on the side surface of the bridge guide main body 24b to prevent the wheelchair from falling when ascending or descending. By sliding the guide member 71b on the upper surface of the bridge guide main body 24b, the wheelchair can be raised and the posture can be changed to the bridge posture for overcoming the stile F.
Although detailed description will be omitted, the position of the bridge guide main body 24b is adjusted along the adjustment pole 24a so that the height of the rising stile F of the house to be used and the upper surface are substantially parallel to each other.

Next, the elevating link portion 3 will be described.
The elevating link portion 3 holds the table portion 4 supported on the upper portion at an arbitrary height by opening and closing.
As shown in FIG. 6, one end is pivotally connected on the rail members 22c, 22c of the second base 22 so as to be rollable, and the other end is a support bracket 4e, 4e, on the mast portion 5 side of the table portion 4, which will be described later. The first links 31, 31 are axially attached to the first link 31, 31 and one end thereof is axially attached to the fulcrum brackets 22b, 22b, ... Of the second base 22. The other end is composed of a second link 32 that is pivotally connected in the rail members 4c and 4c of the table portion 4 so as to be rollable. The second link 32 forms a frame in a substantially H shape in a plan view, and is rotatably attached to the vicinity of the substantially center of the first links 31 and 31 and the second link 32.
By configuring the elevating link portion 3 in this way, the X-frame configuration is formed, and the load received by the table portion 4 can be stably supported.

Next, the table unit 4 will be described.
As shown in FIG. 7, in the table portion 4, a plurality of frames are arranged in a rectangular shape to form a table main body 4a, and a top plate 4b is fixed above the table main body 4a. Then, the rail members 4c, 4c, 4d, and 4d, which are arranged inside the table main body 4a and enable one end of the second link 32 of the elevating link 3 described above to be rollable, are attached to the table main body 4a and the top plate 4b. It is stuck to. The rail members 4c and 4c have a substantially U-shape so that one end of the second link 32 does not fall off. Then, on the frame on the mast portion 5 side of the table body 4a, the support brackets 4e, 4e, ... It is stuck. On the other hand, on the frame opposite to the mast portion 5 of the table body 4a, support plates 4f and 4f for fastening the first fixing portion 63 and the second fixing portion 72 of the slope portion 6 and the bridge portion 7, which will be described later, are provided. It is stuck.

As shown in FIG. 1, the retractable curtains 41, 41, 41 are arranged on three sides other than one side of the table portion 4 on the mast portion 5 mounting side.
Although detailed description of the curtains 41, 41, 41 is omitted, the table portion 4 moves up and down with the curtains 41, 41, 41 having one end fixed to the table body 4a and the other end to the second base 22. It is possible to prevent foreign matter from entering between the table portion 4 and the base portion 2 by winding or unwinding the combined parts, and to prevent damage to the foldable lift 1 and injury to people. Can be done. Further, a mat member is laid on the upper surface of the table portion 4, which prevents the table portion 4 from becoming dirty, prevents the wheelchair on which it is placed from slipping, and further, a table generated when the members constituting the table portion 4 are welded. The appearance is improved by hiding the weld spring on the upper surface of the portion 4.

Next, the mast portion 5 will be described.
As shown in FIG. 11, the mast portion 5 is composed of a middle mast 51 formed in a concave shape in a front view and an outer mast 52 configured to be movable in the vertical direction by being inserted into the middle mast 51. NS.
First, the middle mast 51 will be described.
As shown in FIG. 11, the column frames 51a and 51a having a hollow rectangular shape and formed by opening one side are separated from each other at regular intervals, and the lower ends of the column frames 51a and 51a are stopped by the connecting plate 51b. Wearing and connecting. The facing surfaces of the support columns 51a and 51a are on the opening side. Then, the guide members 51c and 51c are fastened to the outer portions of the support column frames 51a and 51a on the opposite side to the openings, and the adjustment bracket 51d configured to be adjustable in the vertical direction is fastened to the guide member 51c on the rising stile F side. doing. Although detailed description and illustration are omitted, by adjusting the height of the adjustment bracket 51d, the sensing position of the upper limit stop limit switch incorporated in the outer mast 52, which will be described later, can be changed, and the table portion 4 The height of the rise can be adjusted. Then, the urging screws 51e, 51e for urging the levers 93e, 93e of the telescopic means 93, 93, which will be described later, are arranged directly under the mounting position of the levers 93e, 93e and screwed to the connecting plate 51b. There is.
As shown in FIG. 13, the middle mast 51 configured in this way is arranged on the first base 21 of the base portion 2, and the connecting plate 51b is fastened to the first base main body 21a of the base portion 2. doing.

Next, the outer mast 52 will be described.
As shown in FIG. 11 and the like, the outer mast 52 is formed in a substantially L-shape by arranging the first base frames 52a and 52a formed symmetrically in a substantially L-shape at regular intervals. By fixing the connecting frame 52b to both ends of the first base frames 52a and 52a, the connecting frame 52b is formed so as to have a substantially inverted concave shape when viewed from the front. Then, the second base frames 52c and 52c formed symmetrically in a substantially L shape in a plan view are arranged so as to be in contact with both ends of the connecting frame 52b, and the first base frames 52a and 52a and the connecting frame 52b are arranged. It is stuck to. Further, as shown in FIG. 10, bearing members 52d and 52d are fixed near the lower ends of the second base frames 52c and 52c, and bearings 52e and 52e are inserted into the bearing members 52d and 52d. Then, the drive shaft 52f is inserted into the bearings 52e and 52e, and sprockets 52g and 52g are fastened to both ends of the drive shaft 52f.

Further, as shown in FIG. 11, an elevating drive unit 8 having a kudo frame 8a formed in a substantially U shape in a side view above the connecting frame 52b and fixed to the outer mast 52 is provided above the outer mast 52. There is.
The elevating drive unit 8 is configured as follows.
First, as shown in FIG. 9, the Kudo frame frames 8b and 8b are fixed to the vicinity of both ends of the Kudo frame 8a, and the bearing members 8c and 8c are fixed to the Kudo frame frames 8b and 8b. Then, the bearings 8d and 8d are inserted into the bearing members 8c and 8c.

Then, as shown in FIG. 9 and the like, a motor 81 is provided inside the kudo frame 8a.
The motor 81 is supported by a motor bracket 8e anchored in the kudo frame 8a. A motor sprocket 81b is fastened to the output shaft 81a of the motor 81. Further, a bearing member 8f is fixed above the motor 81 of the motor bracket 8e. Then, the motor drive shaft 8g is inserted into the motor bracket 8e, and the sprocket 8i is fastened to one end side of the motor drive shaft 8g via a bearing 8h (not shown). Then, the motor chain 8j is wound around the motor sprocket 81b on the output shaft 81a side of the motor 81 and the sprocket 8i of the motor drive shaft 8g so as to be rotatable in the forward and reverse directions. Further, both ends of the motor drive shaft 8g are inserted into the bearing members 8c and 8c, and the sprockets 8k and 8k are fastened via the bearings 81d and 81d, respectively.
Then, as shown in FIG. 10, the sprockets 8k and 8k anchored to both ends of the motor drive shaft 8g and the sprockets 52g and 52g anchored to both ends of the drive shaft 52f of the outer mast 52 rotate in the forward and reverse directions. Elevating chains 8l and 8l are freely wound around. The elevating chains 8l and 8l are arranged in the column frames 51a and 51a of the middle mast 51, and both ends of the elevating chains 8l and 8l are fixed by connecting members 8m and 8m to form an endless shape.
Then, as shown in FIG. 11, the connecting members 8m and 8m are fixed to the support columns 51a and 51a of the middle mast 51 via the chain fixing members 52i and 52i, so that the sprocket is corrected by the forward and reverse rotation of the motor 81. The outer mast 52 connected to the elevating drive unit 8 is configured to move in the vertical direction with respect to the middle mast 51 by rotating in the reverse direction and rotating each chain in the forward and reverse directions. It should be noted that the tension of the various chains shall be configured so that the tension is always appropriate without loosening.
Although a chain is used in this embodiment, a belt or the like may be used as long as each drive shaft can be rotated.

Further, in this embodiment, the elevating drive unit 8 is arranged above the mast unit 5. This is to minimize the occupied area of the entrance when the foldable elevator 1 is installed. That is, if there is sufficient space for installation, there is no problem even if the elevating drive unit 8 is installed on either side of the mast portion 5 or on the rear portion.
Hereinafter, although detailed description will be omitted, the foldable elevator 1 in this embodiment has some functions.
First, a control board for starting the motor 81, parts of an elevating switch, and the like are arranged inside the outer mast 52, and are covered with a cover composed of a plurality of bent frames. With this configuration, unnecessary wiring does not pop out to the outside of the mast portion 5, and the mast portion 5 can be used safely.
Further, the elevating drive unit 8 in the present embodiment is provided with an emergency descent device for manually lowering the table unit 4 when an abnormality occurs in an electric component such as a power failure when the table unit 4 is stopped at the ascending position. doing. This emergency descent device allows the user to escape safely.

Next, the folding mechanisms 9 and 9 will be described. (Hereinafter, although only the parts on the rising stile F side are shown in FIGS. 10 to 13, the same parts are symmetrically attached to the outer mast 52 on the slope 6 side.)
As shown in FIG. 12, the folding mechanisms 9 and 9 include holding portions 91, 91 which are axially attached to the vicinity of the lower end of the outer mast 52 and rotatably attached to the table portion 4, and the holding portions 91, 91. Arm portions 92, 92 erected on the outer mast 52 and one end of which is pivotally attached to the outer mast 52 so as to be rotatable, and telescopic means 93, 93 for supporting the operation of the arm portions 92, 92. It is composed.
First, the holding units 91 and 91 will be described.
The holding portions 91, 91 pivotally attach the boss members 91a, 91a to the vicinity of the lower end of the second base frame 52c, 52c of the outer mast 52 on the table portion 4 side. Then, the connecting members 91b, 91b arranged so as to project toward the table portion 4 side are fixed to one end of the boss portions 91a, 91a. Then, the connecting members 91b, 91b and a pair of plates 91c, 91c, ... Disposed on the lower surface of the boss members 91a, 91a and separated by a certain interval are fixed.

Then, as shown in FIG. 13, the mast portion 5 anchors the connecting plate 52b of the middle mast 51 to the first base main body 21a of the first base 21, and the support members 91b of the holding portions 91, 91 of the folding mechanisms 9, 9 , 91b are fixed to the table body 4a of the table unit 4.
By configuring the mast portion 5 in this way, as shown in FIG. 15, the table portion 4 supported by the holding portions 91 and 91 as the outer mast 52 moves up and down relative to the middle mast 51. Is linked to move up and down.

Next, the arm portions 92 and 92 will be described.
As shown in FIG. 12, the arm portion 92 has a support shaft 92b perpendicular to the arm bodies 92a, 92a near the upper end of the arm bodies 92a, 92a formed in a substantially L shape in a side view. , 92b are fixed. One end of the support shafts 92b, 92b is rotatably mounted in the elongated holes 521a, 521a formed in the inner side surfaces of the first base frame 52a, 52a of the outer mast 52. Then, the other end of the support shafts 92b, 92b rolls in the elongated holes 521c, 521c formed in the side surfaces of the second base frame 52c, 52c via the bosses 931a, 931a at one end of the expansion / contraction means 93, which will be described later. It is movably attached to the shaft. Then, the tips on the short sides of the arm bodies 92a and 92a are axially attached to the plates 91c, 91c, 91c and 91c via the notches of the connecting members 91b and 91b. Then, the lower surfaces of the connecting members 91b and 91b and the upper surface of the table portion 4 are aligned and fastened so that the folding mechanisms 9 and 9 provided in the outer mast 52 and the table portion 4 are interlocked with each other. The table portion 4 can also be raised and lowered in accordance with the raising and lowering of the mast 52.

Next, the telescopic means 93 and 93 will be described.
As shown in FIG. 12, the expansion / contraction means 93 and 93 use a gas cylinder configured such that the inner cylinders 93b and 93b expand and contract inside the outer cylinders 93a and 93a. Rods 93c and 93c are attached to one end of the inner cylinders 93b and 93b, and the rods 93c and 93c are urged by applying an external force to release the locks of the expansion and contraction means 93 and 93 to expand and contract. It is free. Further, brackets 93d, 93d formed in a U shape are attached to one end of the inner cylinders 93b, 93b, and levers 93e, for urging the rods 93c, 93c, are attached to the brackets 93d, 93d. 93e is attached to the shaft.
In this embodiment, gas cylinders are used for the telescopic means 93 and 93, but a hydraulic cylinder, an actuator, or the like may be used, and any component that can be expanded and contracted may be arbitrarily set by the user.

Next, the slope portion 6 will be described.
As shown in FIG. 14, the slope portion 6 has a first slope 61 arranged on two consecutive sides excluding the bridge portion 7 and the mast portion 5 among the four sides of the table portion 4 formed in a rectangular shape in a plan view. It is composed of a second slope 66 and a corner slope 67 connecting the corners of the first slope 61 and the second slope 66, and is for allowing the wheelchair K to easily get on the table portion 4 from the installation surface.
First, the first slope 61 will be described.
The first slope 61 is arranged on the short side on the entrance (door) side, and support plates 61b and 61b are provided at both ends of the first slope body 61a formed in a tapered shape so that a wheelchair can easily get in when in use. It is stuck. The first slope main body 61a is formed into a hollow shape by bending a plate a plurality of times.
The first slope 61 configured in this way will be described in detail later, but the square holes 611b and 611b formed in the support plates 61b and 61b so as to penetrate the slope shaft 62 in the longitudinal direction of the first slope 61. Is inserted through the first fixing portion 63 that fastens to the table portion 4, and one end protruding from the first slope 61 is inserted into the boss member 4g and the roller support portion 64 of the table portion 4, and the fastening member 65 It has stopped.

Next, the slope shaft 62 will be described.
The slope shaft 62 is cut from both ends of a square bar so as to have a cylindrical shape at regular intervals, one end is provided with a hole for fastening a roller support portion 64, which will be described later, and the other end is omitted. A roller member 62b is press-fitted into a slope shaft body 62a that is bent and formed in a shape and one end of the slope shaft body 62a that is bent in a substantially square shape. The roller member 62b has a tapered shape so as to become thinner toward the tip. With this configuration, as described above, the square holes 611b and 611b of the support plates 61b and 61b of the first slope 61 and the square bar of the slope shaft main body 64a are in a synchronized state.

Next, the first fixing portion 63 will be described.
The first fixing portion 63 is a first fixing portion main body 63a in which a hole 631a for inserting a slope shaft 62 is bored, and a support shaft arranged in a direction perpendicular to the hole 631a of the first fixing portion main body 63a. 63b and the table fixing portion 63c are fixed to each other. A cylindrical portion of the slope shaft main body 62a is arranged in the hole 631a of the first fixing portion main body 63a. Then, one end of the second slope 66, which will be described later, is rotatably inserted into the support shaft 63b. Then, the first fixing portion 63 is fixed to the table portion 4 by fastening the table fixing portion 63c to the support plate 4f of the table portion 4.

Next, the roller support portion 64 will be described.
A boss member 64b is fixed to one end of a roller support plate 64a formed in a substantially U shape, and a slope roller 64c is axially attached to the other end. The boss member 64b has a hole formed at a position eccentric from the center of the outer diameter of the roller support plate 64a in the closing direction.
Next, the fastening member 65 will be described.
The fastening member 65 is provided with a pin portion in the center of an outer frame curved to fit the outer diameter of the slope shaft main body 62a of the slope shaft 62, and the pin portion is inserted into a hole of the slope shaft main body 62a. By doing so, the slope shaft 62a is prevented from falling off from the boss member 4g of the table portion 4.
The roller support portion 64 and the fastening member 65 configured in this way are configured so that the slope shaft main body 62a can rotate the side portion of the table portion 4 and does not come off as described above.
The slope roller 64c of the roller support portion 64 is assembled so as to contact and roll with the guide member 51c of the mast portion 5 when the table portion 4 is raised and lowered.

As shown in FIG. 15, the first slope 61 configured in this way is provided with an installation surface as the slope roller 64c of the roller support portion 64 is guided by the guide member 51c of the mast portion 5 and rolls. It is possible to change the posture between the bridging state and the fall prevention state where the wheelchair receives the wheels when going up and down.
More specifically, as shown in FIG. 15A, when the table portion 4 is located at the lowest position, the slope roller 64c is arranged directly under the guide member 51c and does not come into contact with the guide member 51c, so that the first slope 61 has its own weight. As a result, it becomes horizontal with the table portion 4 and becomes a bridging state.
On the other hand, when the table portion 4 is raised from the lowest position to an arbitrary height as shown in FIG. 15B, the slope roller 64c comes into contact with the lower surface of the guide member 51c and rotates counterclockwise in the front view. .. When the table portion 4 is further raised from this state, the slope roller 64c rolls and rises on the side surface of the guide member 51c.
At this time, since the first slope 61 is in a state synchronized with the slope shaft 62, the posture of the first slope 61 is also changed in accordance with the posture change of the roller support portion 64 synchronized with the slope shaft 62, and the posture of the first slope 61 is changed in the front view. The first slope 61 is supported in a fall-prevention state in which the first slope 61 stands up against the table portion 4 in a counterclockwise direction.

Next, the second slope 66 will be described.
The second slope 66 is arranged on the long side of the mast portion 5 of the table portion facing the long side, and like the first slope 61, the second slope 66 is formed in a tapered shape so that a wheelchair can easily get on in the bridging state. Support plates 66b, 66b are fixed to both ends of the slope main body 66a, and connecting plates 66c, 66c are fixed to the outside of the support plates 66b, 66b.
One end of the corner slope 67, which will be described later, is fastened to the support plate 66b at one end on the first slope 61 side of the second slope 66 configured in this manner, and the first fixing portion is made into a hole formed in the connecting plate 66c. By inserting the support shaft 63b of 63 and inserting the support shaft 72c of the second fixing portion 72 described later into the hole formed in the connecting plate 66c at the other end, the second slope 66 inserts the side portion of the table portion 4. It is rotatably attached to the shaft when viewed from the side.

Next, the corner slope 67 will be described.
As shown in FIG. 3, the corner slope 67 is formed in a fan shape in a plan view, and is tapered so as to have a shape continuous with the upper surfaces of the first slope main body 61a and the second slope main body 66a. Support plates 67b and 67b are fixed to both ends of the corner slope main body 67a and the corner slope main body 67a.
As described above, the corner slope 67 configured in this way is fixed to one end of the second slope 66 on the first slope 61 side so that the roller member 62b of the slope shaft 62 abuts on the back surface of the corner slope main body 67a. Is arranged in.

The second slope 66 and the corner slope 67 configured in this way can be linked to the posture change of the first slope 61 described above.
More specifically, as shown in FIG. 15B, when the table portion 4 rises from the lowest position, the slope shaft 62 synchronized with the first slope 61 is counterclockwise in front view by the roller support portion 64 as described above. It is acted to rotate clockwise.
Then, the first slope 61 stands up and is in a fall prevention state, and the roller member 62b of the slope shaft 62 arranged on the back surface of the corner slope 67 presses the back surface of the corner slope main body 67a of the corner slope 67. Then, the corner slope 67 stands up and is in a fall prevention state. At this time, the second slope 66, which is anchored to the corner slope 67, is also put into a fall prevention state in conjunction with the corner slope 67.

Next, the bridge portion 7 will be described.
The bridge portion 7 includes a bridge 71, a second fixing portion 72 that is fastened to one end on the second slope 66 side when the bridge 71 is assembled to the table portion 4, and the bridge 71 and the second fixing portion 72. It is composed of a handle portion 73 erected on the table, and is used to move a wheelchair or a user indoors by bridging the table portion 4 and the rising stile F.
First, the bridge 71 has guide members 71b and 71b fixed to both ends of the bridge body 71a formed in a U shape by bending both ends in the longitudinal direction, and the bridge body 71a is attached to one end of the bridge body 71a on the table portion 4 side. Support shafts 71c and 71c arranged so as to protrude from the end of 71a are fixed.
The bridge portion 71 configured in this way is rotatably supported by inserting one end into the boss 4g of the table portion 4 and the other end through the hole 721a of the second fixing portion main body 72a of the second fixing portion 72. There is.

Next, the second fixing portion 72 will be described.
The second fixing portion 72 is the difference between the second fixing portion main body 72a in which the hole 721a for inserting the supporting shaft 71c of the bridge 71 described above is bored and the supporting shaft 71c of the hole 721a of the second fixing portion main body 72a. The handle shaft 72b arranged at the end opposite to the insertion side, the support shaft 72c arranged so as to be perpendicular to the support shaft 72b, and the table fixing portion 72d are fixed to each other. There is. Then, the boss 73a of the handle portion 73, which will be described later, is externally inserted into the handle shaft 72b, and the support shaft 72c is inserted into the hole of the support plate 66b of the second slope 66. Then, the second fixing portion 72 is fixed to the table portion 4 by fastening the table fixing portion 72d to the support plate 4f of the table portion 4.

Next, the handle portion 73 will be described.
The handle portion 73 is configured by fixing a boss member 73a that is externally attached to and fastened to a support shaft 72b of the second fixing portion 72 and a handle 73b having one end curved in an L shape. ing. Then, one end of the handle 73b is inserted into a hole 711b formed in the guide member 71b of the bridge 71.

The bridge portion 7 configured in this way changes its posture independently without interlocking with the slope portion 6.
More specifically, as shown in FIG. 4, when the bridge portion 7 is at the lowest position, the guide member 71b is guided to the side surface of the bridge guide 24 on the table portion 4 side, so that the bridge portion 7 becomes the table portion 4. On the other hand, it is in an upright state by rotating clockwise in front view. When the table portion 4 is raised from this state, the guide member 71b rises while abutting against the side surface of the bridge guide 24, and when it moves to the upper surface of the bridge guide 24, the bridge portion 7 rotates counterclockwise and rises with the stile F. The table portion 4 is in a bridging state. That is, the bridge portion 7 in this embodiment has an automatic slope configuration capable of automatically switching between the standing state and the bridging state.
In this embodiment, the posture of the bridge portion 7 is changed by the bridge guide 24, but when the side surface of the rising stile F is vertical as shown in FIG. 4, the side surface of the rising stile F is used to bridge. The posture of the part 7 may be changed.

Further, although detailed description is omitted, the slope portion 6 and the bridge portion 7 can be rearranged into the right specification and the left specification.
Further, in this embodiment, by making the shape of the table portion 4 rectangular, two types of slopes in which the widths of the first slope 61 and the second slope 66 are different on the short side side and the long side side are required. By making the table portion 4 square, it is possible to make one type of slope riding width.
That is, the slopes (first slope 61 and second slope 66) are not limited to this embodiment, and may be arbitrarily set according to the size of one side of the table portion 4.

Next, in addition to the parts described so far, the parts constituting the foldable elevator 1 will be described.
First, the elevating switch 10 will be described.
As shown in FIG. 1, the elevating switch 10 is a switch for activating the motor 81a, and is provided with two buttons for instructing ascending and descending. (Although illustrations and detailed explanations are omitted, the main power supply is connected to a household outlet to obtain power.)
Further, when the elevating switch 10 is stored, it can be hooked on the grip portion 11 described later, but it can also be hooked on the hook 52h fixed to the inside of the mast portion 5.
This is because the hook 52h is arranged slightly inside the front end of the outer mast 52 in the side view so that the upper surface of the table portion 4 and the elevating switch 10 do not interfere with each other when the table portion 4 is folded. Because.

Next, the grip portion 11 will be described.
The grip portion 11 is arranged above the mast portion 5, and is attached to the support portions 11a, 11a at regular intervals so as to project from above both ends of the mast portion 5. A grip 11b formed by winding a material is erected.
The grip 11b has the purpose of improving the sense of stability by gripping the grip 11b when a wheelchair user or a user with a disability in the lower limbs moves up and down using the foldable lift 1. Further, it can be used as a handle when assembling the mast portion 5 and the base portion 2.

Next, a folding method of the table portion 4 will be described.
First, the foldable elevator 1 in this embodiment is configured so that the folding operation can be performed only when the table portion 4 is at the lowest position.
More specifically, FIG. 16 shows a state in which the table portion 4 has risen to a certain height and is stopped.
At this time, the levers 93e and 93e of the folding mechanisms 9 and 9 and the urging screws 51e and 51e of the middle mast 51 are not in contact with each other.
Therefore, since the rods 93c and 93c are not pressed by the levers 93e and 93e, the telescopic means 93 and 93 cannot be expanded and contracted, and the table portion 4 cannot be folded.

And FIG. 17 shows the state where the table part 4 is in the lowest position.
At this time, the levers 93e and 93e of the folding mechanisms 9 and 9 and the urging screws 51e and 51e of the middle mast 51 are in contact with each other. That is, the rods 93c and 93c are pressed by the levers 93e and 93e, and the telescopic means 93 and 93 can be expanded and contracted.
Further, although the outer cylinders 93a and 93a try to extend with respect to the inner cylinders 93b and 93b of the expansion and contraction means 93 and 93, the second base 22 and the table portion 4 of the base portion 2, the slope portion 6, the bridge portion 7, etc. When the parts attached to the table portion 4 are made into one rigid body, the expansion / contraction means 93, 93 cannot be stretched because their moments are larger than the repulsive force of the expansion / contraction means 93, 93.
From this state, a caregiver or the like grips the handle portion 73 provided on the bridge portion 7 connected to the table portion 4 and rotates the handle portion 73 in the direction of the mast portion 5, so that the position of the center of gravity is set to the mast portion 5 (expanding means 93, 93). The moment gradually becomes smaller.
Then, the repulsive force of the expansion / contraction means 93, 93 becomes larger than the moment of the table portion 4, so that the expansion / contraction means 93, 93 can be stretched. Along with this, the table portion 4 is folded toward the mast portion 5 so that the table portion 4 can be brought into a folded state as shown in FIG.
When the table portion 4 is put into the used state, the posture can be changed to the used state by the expansion / contraction means 93, 93 acting contrary to the folded state.

By configuring the folding mechanisms 9 and 9 in this way, the table portion 4 cannot be folded unless it is at the lowest position. Therefore, it is impossible to forcibly make the table portion 4 usable when the minimum position is not reached. It is possible to prevent a wheelchair or a user from getting into the table portion 4 and receiving an eccentric load to damage the table portion 4 or the like.
Then, when the table portion 4 is to be in the folded state, as shown in FIG. 19, when the operator grips the handle portion 73 and moves the table portion 4 in the folding direction, the telescopic means 93 and 93 are gradually expanded and contracted. Since the repulsive force of the table portion 4 and the like is larger than the moment of the table portion 4, the force for the operator to operate the handle portion 73 can be reduced. (It can be folded automatically when it moves to a certain place.)
On the other hand, when returning from the folded state to the used state, the moment of the table portion 4 or the like gradually becomes larger than the repulsive force of the expanding / contracting means 93, so that the burden on the operator can be reduced.

Next, a method of using the foldable elevator 1 using this embodiment will be described.
The following procedure describes the procedure for moving indoors from the entrance, assuming an entrance with a rising stile F.
(1) The table portion 4 of the foldable elevator 1 in the folded state is deployed in the used state while gripping the handle portion 73 of the bridge portion 7.
(2) The user M of the wheelchair K gets on the upper surface of the table portion 4 from the entrance side via the slope portion 6.
(3) The caregiver or the user M of the wheelchair K pushes the ascending button of the elevating switch 10 to elevate the table portion 4.
(4) At the same time that the table portion 4 rises to a height substantially parallel to the upper surface of the rising stile F, the bridge portion 7 automatically rises and becomes a bridge to the rising stile F side.
(5) The user M of the wheelchair K rises from the table portion 4 via the bridge portion 7 and moves indoors over the stile F.
(6) When a healthy person uses the entrance, the lowering button of the elevating switch 10 is pressed to lower the table portion 4 to the lowest position.
(7) While gripping the handle portion 73 of the bridge portion 7, the table portion 4 is folded toward the mast portion 5 to be in a folded state.
In this embodiment, as shown in FIG. 19, a wheelchair has been used for explanation, but it can also be used as a standing lift by a user with a disability in the lower limbs walking into the table portion 4. (The usage is the same as the method using wheelchair K.)

Further, as shown in FIGS. 20 (a) to 20 (c), the foldable elevator 1 in this embodiment can be boarded straight, L-shaped, and diagonally, and can be installed without being affected by the floor plan of the entrance or the like. can.
More specifically, as shown in FIG. 20A, when the rising stile F is connected in a linear direction with respect to the entrance (door) and the entrance (door) is installed on the wall side, FIG. 21 As shown in (a), the first slope 61 is used to get into the table portion 4.
In the case of a positional relationship in which the rising stile F is connected in the L direction with respect to the entrance (door) as shown in FIG. 20 (b), the table portion 4 is used by using the second slope 66 as shown in FIG. 21 (b). The user M turns the wheelchair K on the table portion 4 to put it in the boarding state.
As described above, since the space S is provided by forming the inner mast 51 and the outer mast 52 of the mast portion 5 in a concave shape, the legs of the wheelchair K and the user M are affected when the wheelchair K is turned. It can turn smoothly without interfering with the mast portion 5.
As shown in FIG. 20 (c), when the rising stile F is connected in a linear direction with respect to the entrance (door) and the entrance (door) is installed at a position away from the wall side, FIG. 20 As shown in (a), it is not possible to board straight, so when using a general elevator, it is necessary to install it away from the wall, and a dead space is created behind the mast portion 5. On the other hand, the foldable lift 1 in the present embodiment is dead because the corner slope 67 can be provided so that the first slope 61 and the second slope 66 are continuous as described above. There is no need to make space and the entrance can be used widely. In the diagonal boarding method, the user M turns the wheelchair K on the table section 4 after boarding the table section 4 in the same manner as the L-shaped boarding, and uses the wheelchair K in the boarding state.
As shown in FIG. 21, the wheelchair K is described by getting in the rear, because the foot support of the wheelchair K and the foot of the user M are pinched when a space is provided on the lower surface of the rising stile F. This is to prevent the above. If there is no space under the rising stile F, there is no need to worry about being pinched, so it is okay to get in the wheelchair K forward.

Further, when the posture of the table portion 4 is changed to the folded state, the table portion 4 can be kept in the folded state due to the repulsive force of the telescopic means 93, but some external force (for example, the user leans back or catches an umbrella or the like). It is conceivable that the force to return the table portion 4 to the used state works by adding (such as squeezing). In this case, there is a risk that a person may be endangered or an object placed on the floor may be pinched and damaged.
At that time, as shown in FIG. 22A, the danger can be avoided by providing the lock portion 12 for fixing the table portion 4 and the mast portion 5 when the table portion 4 is in the folded state.
More specifically, a hook 12a with a release lever is hung on the handle body 73b of the handle portion 73, a ball chain 12b is fastened to one end of the hook 12a with a release lever, and a circular ring 12c is attached to the other end of the ball chain 12b. The circular ring 12c is attached to the hole formed in the plate of the support portion 11a of the grip portion 11.
By configuring the lock portion 12 in this way, even if a force for returning the table portion 4 to the used state is applied, the handle portion 73 and the support portion 11a can be opened by the lock portion 12 only by the length of the ball chain 12b. Part 4 does not suddenly return to the used state.
The place and specifications to be provided are not particularly limited, and any configuration may be used as long as the positional relationship with the mast portion 5 can be maintained so that the table portion 4 does not return to the used state.
For example, as shown in FIG. 22B, the mast portion 5 and the table portion 4 (slope portion 6, bridge portion 7) may be covered with a tubular cover 13 having one end sealed to prevent dust. ..

1 Folding elevator 2 Base 21 1st base 22 2nd base 3 Lifting link 4 Table 5 Mast 51 Medium mast 52 Outer mast 6 Slope 61 1st slope 62 Slope shaft 63 1st fixed part 64 Roller support 65 Fastening member 66 Second slope 67 Corner slope 7 Bridge part 71 Bridge 72 Second fixing part 73 Handle part 8 Lifting drive part 81 Motor 9 Folding mechanism 91 Holding part 92 Arm part 93 Telescopic means 10 Lifting switch 11 Grip part F Lifting stile K wheelchair S space

Claims (7)

A base portion composed of a first base and a second base rotatably attached to one end of the first base, an elevating link portion rotatably attached to the second base, and the elevating link. The table portion supported by the portion, the inner mast supported on the first base, the outer mast externally attached to the inner mast, and the outer mast to be raised and lowered relative to the inner mast. A holding portion that rotatably holds the table portion toward the mast portion by axially attaching to the mast portion provided with the elevating drive portion and the vicinity of the lower end of the outer mast and fastening one end of the table portion. One end is axially attached to the holding portion, and the other end is axially attached to the arm portion and the other end, which is rotatably attached to an elongated hole bored in the outer mast, and the other end. Is provided with a folding mechanism composed of telescopic means axially attached to the lower end of the outer mast, and when not in use, one end of the telescopic means is stretched to roll the elongated hole of the outer mast and the arm portion. In a foldable elevator that enables the second base, the elevating link portion, and the table portion to be folded toward the mast portion by lifting one end toward the upper side of the outer mast, the table portion is at the lowest position. However, the foldable elevating machine is characterized in that the mast portion is configured so that the urging screw screwed to the middle mast and the lever that enables stretching and shortening of the telescopic means do not come into contact with each other. In order to prevent the foldable elevator from tipping over when the table portion is folded, a base reed formed by extending in a direction perpendicular to the mast portion in a plan view is fastened to one end of the first base. The foldable elevator according to claim 1. A first slope is rotatably attached to one side of the table portion formed in a rectangular shape in a plan view in a direction perpendicular to the mast portion, and a second slope is rotatably attached to one side facing the mast portion. A slope portion formed in a fan shape so that one end and the other end of the first slope are adjacent to each other when the table portion is at the lowest position in a plan view, which is fixed to one end of the second slope, and the first slope portion. The claim is characterized in that, by rotatably attaching the bridge portion to one side facing one slope, the wheelchair can get on the table portion not only in the straight direction and the L-shaped direction but also in the diagonal direction. 1 or the foldable elevator according to claim 2. The slope shaft is inserted in the longitudinal direction of the first slope so that the square holes of the support plate fixed to both ends of the first slope and the corners of the slope shaft are synchronized, and one end of the slope shaft is the table portion. The roller support portion is fixed via the boss member of the above, and the other end is disposed on the lower surface of the corner slope via the first fixing portion fixed to the table portion to form the slope portion. By being urged by the guide member arranged on the side portion of the middle mast, the slope roller axially attached to one end of the roller support portion changes the posture of the first slope to the upright state when the table portion is raised. One end of the slope shaft arranged on the lower surface of the corner slope urges the corner slope in the upright direction, so that the second slope anchoring the corner slope is in an upright state at the same time as the corner slope. The foldable elevator according to claim 3, wherein the posture can be changed. The foldable elevator according to claim 3 or 4, wherein a handle portion is provided at one end of the bridge portion on the second slope side, thereby simplifying the folding operation of the table portion. The foldable elevator according to claim 1 to 5, wherein a grip portion that can be grasped by a user is provided on the upper portion of the mast portion. 1. The foldable elevator according to 6.

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