JP2023062853A - Tilting prevention tool - Google Patents

Abstract

To provide a tilting prevention tool that is suitable for supporting a pillar erected in proximity to a wall surface and is capable of improving safety of various types of pillars and safety of conventional auxiliary handrails to expand their use range.SOLUTION: A tilting prevention tool is attached detachably and rotatably to a pillar 20 erected in proximity to a wall surface T1 and is inserted between the wall surface and the pillar 20 to prevent the pillar 20 from tilting unexpectedly on the side of the wall surface T1. The tilting prevention tool has an outer peripheral surface 47 in a shape of a curve to which Fibonacci series are applied.SELECTED DRAWING: Figure 1

Description

There is an application for exception to loss of novelty

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-tilt device suitable for use as an auxiliary handrail suitable for use in the fields of nursing care and welfare.

Conventional portable and stationary auxiliary handrails for elderly people and supporters requiring care (hereinafter referred to as "users") who have difficulty standing and sitting from chairs or beds without assistance but who have difficulty on their own. is used.

This type of auxiliary handrail generally includes, for example, a base portion, a strut portion erected on the base portion, and a handrail portion supported by the strut portion (see, for example, Patent References 1 and 2).

In addition to the above, there is a well-known auxiliary handrail equipped with a fall prevention mechanism that can be hung on an object such as a bed so that it does not fall over due to the lateral load applied when the user stands up ( For example, see Patent Documents 3 and 4).

Furthermore, an auxiliary handrail has been proposed in which a positioning member is provided on the post so that the horizontal distance from the bed can be set to a predetermined dimension or more (see, for example, Patent Document 5).

All of the auxiliary handrails described above are mainly intended for use in bedrooms and living rooms. Therefore, various handrails have been proposed for use in bathrooms, particularly those that assist movement between the washroom and the bathtub (see, for example, Patent Documents 6 and 7).

The handrail for a bathtub disclosed in Patent Document 6 is installed by inserting the leg portions of the handrail into mounting holes respectively formed in the wall portion of the bathtub and the washing area, and is disclosed in Patent Document 7. The bathtub handrail is installed by pinching the wall portion of the bathtub with the pinching portion.

Utility Model Registration No. 3034536 Utility Model Registration No. 3217350 Utility Model Registration No. 3127542 JP 2015-202317 A Utility Model Registration No. 3148521 JP-A-8-275894 JP 2019-180680 A

The auxiliary handrails disclosed in Patent Literatures 1 to 5 are based on the premise that the user holds the handrail portion or the like of the auxiliary handrail with one hand when sitting down from a chair or bed. On the other hand, the auxiliary handrails for bathtubs disclosed in Patent Documents 6 and 7 are specialized for assisting movement between the washroom and the inside of the bathtub by being installed on the wall of the bathtub.

However, the above conventional auxiliary handrail still has room for improvement in terms of versatility. Details will be described below.

All of the auxiliary handrails disclosed in Patent Documents 1 to 5 are suitable for use in bedrooms, living rooms, etc., but are unsuitable for use in bathrooms due to their size, water resistance, and corrosion resistance. There are many. On the other hand, the bathtub handrails disclosed in Patent Documents 6 and 7 are specialized for use in the bathroom and cannot be used in other places. Therefore, if handrails are to be installed in the bedroom, the living room, and the bathroom, it is necessary to prepare the two types of handrails described above, which increases the economic burden on the user. rice field.

In addition, when a shower chair that allows a user to take a shower while seated is used in a bathroom, the installation position of the handrail for the bathtub as described above is limited to the wall of the bathtub. It is not suitable for assisting standing and sitting from a shower chair because it is in a difficult position to use for standing and sitting from a chair. In order to solve this point, it is envisioned that the auxiliary handrails disclosed in Patent Documents 1 to 5 may be brought into the bathroom separately and used together with the handrails for the bathtub. If that is the case, then it is unrealistic to use the two types of handrails as described above in a bathroom with a narrow washroom, such as a unit bath. For this reason, there is a problem that when standing up from a shower chair, the user has to rely on the bathtub handrail, which is difficult to use, for assistance.

Furthermore, if there is a space where the auxiliary handrail disclosed in Patent Documents 1 to 5 can be installed together with the shower chair in the washroom, only the auxiliary handrail is installed without installing the bathtub handrail, and this auxiliary handrail is removed from the shower chair. It is envisioned that it will be used both to assist the person standing and sitting down and to assist movement between the washing area and the bathtub. However, in this case, since the edge of the base part abuts against the wall of the bathtub and a space is inevitably formed between the support of the auxiliary handrail and the wall of the bathtub, the auxiliary handrail is subjected to a lateral load in the direction of the bathtub. When a force is applied, the auxiliary handrail is highly likely to tilt toward the bathtub with the edge of the base portion as a fulcrum, which may cause an accident such as a fall of the user. In addition, if the lower part of the wall of the bathtub is recessed and the edge of the base part is accommodated in the recess, and if the post follows the wall, even if a lateral load is applied to the auxiliary handrail in the direction of the bathtub, the wall of the bathtub will not support the post. Since it is in contact with and supports the bathtub, there is no danger of causing the above-mentioned overturning accident. In addition to spoiling the appearance, there is a problem that mold easily grows from the damaged part, making it difficult to maintain the hygiene of the bathroom.

In order to solve such a problem, it is conceivable to interpose a member for preventing tilting of the auxiliary handrail between the support of the auxiliary handrail and the wall of the bathtub. As an example thereof, there is an overturn prevention mechanism as disclosed in Patent Documents 3 and 4. However, the overturn prevention mechanisms disclosed in these patent documents are inserted into gaps in the bed or clamp the wall of the bed. This is not possible because the shape of a bathtub is greatly different from that of a bathtub. Also, suppose that instead of using such an overturn prevention mechanism as described above, it is assumed that the tip of the overturn prevention mechanism is brought into contact with the wall of the bathtub as disclosed in Patent Document 5. However, since there are a wide variety of bathtubs and the shape of each bathtub varies, there is no limit to the variation in the distance between the wall of the bathtub and the support. In addition, it is conceivable that, for example, a plurality of types of overturn prevention mechanisms with different lengths are prepared in advance and one is selected according to the distance between the column and the wall of the bathtub, but it is possible to correspond to any distance. It is unrealistic to prepare an overturn prevention mechanism in advance. Furthermore, it is also conceivable that the overturn prevention mechanism has a telescopic function so that the extension length can be adjusted according to the distance between the wall of the bathtub and the support. In that case, a sliding member and a support member for supporting this sliding member are required. Considering the necessary length of these members from the viewpoint of ensuring strength, the necessary length is the distance between the wall of the bathtub and the support. This is also not a solution, as it cannot be accommodated when exceeding .

The present invention has been made to solve the above problems, and is suitable for supporting posts erected close to a wall surface, and by improving the safety of various posts and the safety of conventional auxiliary handrails. To provide an anti-tilt device capable of widening the range of use.

In order to solve the above-mentioned problems, the tilting prevention tool disclosed in the present application is detachably and rotatably attached to a post erected near a wall surface, and is interposed between the wall surface and the post. is an anti-tilt device that prevents the support column from unexpectedly tilting toward the wall surface, wherein the outer peripheral surface of the support has a radius of curvature centered on the axis of the support in one direction around the axis. It is characterized in that it has a curved shape that gradually increases according to.

Further, in the tilting prevention tool, the auxiliary handrail includes a base portion installed on the floor, a support portion erected on the base portion, and a handrail portion provided on the upper end of the support portion. It is attached to the support.

According to the present invention, for example, when it is applied to a so-called tension post that is erected close to the wall surface while being stretched between the floor and the ceiling, a tilting prevention tool can be attached to the post. Even if a lateral load is applied to the support in the direction of the wall surface, the support can be supported against the load, and the support can be prevented from tilting or overturning.

In addition, when this auxiliary handrail is applied to the support of the auxiliary handrail in the same way, when this auxiliary handrail is used in the bathroom instead of the conventional bathtub handrail, the auxiliary handrail moves in the direction of the bathtub as it moves between the washroom and the bathtub. Even if a lateral load is applied, the anti-tilt device contacts with the wall of the bathtub and supports the supporting part, so that the auxiliary handrail does not tilt and an accident of falling can be prevented.

The anti-tilt device has a curved outer peripheral surface, and the radius of curvature of the curved surface about the axis of the post increases gradually in one direction around the axis. Since the support is rotatable, the distance between the surface of the support and the outer peripheral surface of the anti-tilt device changes steplessly around the outer peripheral surface. Even if there is, the anti-tilt device can be appropriately brought into contact with the wall surface simply by rotating the anti-tilt device around the support.
The curved surface of the outer peripheral surface may be a curved surface to which the Fibonacci sequence is applied.

ADVANTAGE OF THE INVENTION According to the present invention, there is provided an anti-tilt device that is suitable for supporting posts erected close to a wall surface and that can increase the safety of various posts and the safety of conventional auxiliary handrails to expand the range of their use. can do.

It is a schematic perspective view which shows the usage example of the tilting prevention tool of this indication. It is a partially enlarged schematic perspective view showing a mounting state of the tilting prevention device disclosed in the present application to a support. Fig. 2 is a schematic perspective view showing an example of a case where the auxiliary handrail equipped with the tipping prevention device disclosed in the present application is used as a bathtub handrail in a bathroom. 1 is a schematic exploded perspective view of an auxiliary handrail to which an anti-tilt device disclosed in the present application is attached; FIG. An example of the tilting prevention tool of this application indication is shown, (a) is a schematic plan view, (b) is a schematic perspective view. Another example of the tilting prevention device disclosed in the present application is shown, (a) is a schematic plan view, and (b) is a schematic perspective view. Fig. 10 shows still another example of the tilting prevention tool disclosed in the present application, where (a) is a schematic plan view and (b) is a schematic perspective view. FIG. 4 is a schematic side view showing a tilted state that can occur when no tilting prevention tool is used;

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the following embodiments are examples of embodiments embodying the present invention, and are not intended to limit the technical scope of the present invention. In addition, the same reference numerals are given to common components in the following description and drawings.

<Example of application to auxiliary handrails>
An example in which the tipping prevention device disclosed in the present application is applied to an auxiliary handrail will be described with reference to FIGS. 1 to 4. FIG.

FIG. 1 is a schematic perspective view showing an example of applying the tipping prevention device disclosed in the present application to an auxiliary handrail used as a bathtub handrail, FIG. 3 is a schematic perspective view showing an example of a case where the auxiliary handrail is used as a bathtub handrail in the bathroom, and FIG. 4 is a schematic exploded perspective view of the auxiliary handrail to which the tipping prevention device disclosed in the present application is attached.

The auxiliary handrail 1 includes a base portion 10 installed on the floor, a support portion 20 erected from the base portion 10, and a handrail portion 30 provided at the upper end of the support portion 20. As shown in FIG. Each part will be described in detail below.

<Base part>
The base portion 10 has a function of fixing the auxiliary handrail 1 to the floor surface. The peripheral end portion of the base portion 10 is provided with an inclined surface 11 directed toward the floor surface. A space for attaching the member 25 and a weight (not shown) to the back surface of the base portion 10 is secured. The base portion 10 having such a configuration has a low center of gravity and a large contact area with the floor surface in order to avoid an accident due to overturning of the auxiliary handrail 1 .

As a material for forming the base portion 10, a metal plate or a high-strength synthetic resin plate can be used. When a metal plate is used, it is preferable that it is subjected to antirust treatment in view of its use in a bathtub. Either one should be provided. In addition, the peripheral edge portion 12 of the inclined surface 11 may be further fitted with a cushioning material made of, for example, rubber or synthetic resin. safety can be ensured.

The base portion 10 configured as described above is provided with two sets of support portion mounting portions 13 and 14 . One of the sets 13, 13 is arranged near one side edge of the base portion, and the other set 14, 14 is arranged in the central portion of the base portion. These support mounting portions 13 and 14 are provided with three through holes 15 to 17 arranged in a row and a decorative cap 18 for closing these through holes 15 to 17 when not in use. Of the three through holes 15 to 17, the two outer through holes 15 and 17 are screw through holes through which mounting screws 25d are inserted, and the central through hole 16 is a drain hole. The decorative cap 18 is preferably made of a soft resin so as not to injure the user even if he touches it barefoot. Attachment of the decorative cap 18 to the supporting portion mounting portions 13 and 14 is performed by inserting a pair of fitting protrusions 18a and 18a provided on the back surface of the decorative cap 18 into the screw insertion holes (the two outer through holes 15 and 17). It is done by inserting.

<Support part>
The support portion 20 is composed of two strut members 21, 21 in the illustrated example. These strut members 21, 21 are provided with a cylindrical holder portion 22 having a decorative cover 22a fixed to the lower end thereof, and a strut 23 which is detachably inserted into the holder portion 22. As shown in FIG.

The holder portion 22 is provided with through-holes 22b through which height adjusting screws (not shown) are inserted in side faces facing each other. Inside the decorative cover 22a fixed to the lower end of the holder part 22, a stationary platen 25a having a nut 25b fixed to the upper surface thereof is installed. In FIG. 2, the holder portion 22, the decorative cover 22a, and the fixed plate 25a are shown separately, but this is for explanation purposes, and these three members are actually integrated by welding or the like. ing. The holder portion 22 having such a configuration is made to contact the fixed plate 25a by screwing the mounting screw 25d inserted from below the contact plate 25c which is in contact with the rear surface of the base portion 10 into the nut 25b of the fixed plate 25a. It is erected and fixed on the base portion 10 by sandwiching the base portion 10 with the plate 25c. Also, the fixed plate 25a and the contact plate 25c are also provided with water drain holes 24 corresponding to the water drain holes (central through hole 16) of the base portion. Note that the decorative cover 22a may not be fixed to the holder portion 22, but may simply be attached by covering the stationary platen 25a. Alternatively, while the mounting screw 5d is fixed to the contact plate 25c, the fixed plate 25a and the nut 25b may be separated from each other, and the nut 25b may be screwed onto the mounting screw 25d.

The column 23 is provided with a plurality of threaded holes 23b corresponding to the insertion holes 22b of the holder portion 22 and screwed with height adjusting screws in a vertical row. By appropriately selecting one of these screw holes 23b, the length of protrusion of the post 23 from the holder portion 22 can be changed, so that the height of the handrail portion 30 can be adjusted.

The support portion 20 described above is selectively erected and fixed to one of the two sets of support portion mounting portions 13 and 14 of the base portion 10 by attaching and detaching the mounting screw 25d, and the support portion 20 is mounted. A cosmetic cap 18 is attached to the supporting portion mounting portions 13 and 14 which are not provided.

In the above example, the support part 20 is composed of two strut members 21, 21, but is not limited to this, and may be composed of, for example, one or three or more strut members. A plate-like shape may be used instead of the column-like shape.

<Handrail part>
The handrail portion 30 includes a horizontal rod 31 connected to the support portion 20, a pair of gripping rods 32, 32 extending in the same direction from both ends of the horizontal rod 31, and the pair of gripping rods 32, 32 and a handrail rod 33 installed between both ends 32a, 32a.

The horizontal rod 31 has connecting portions 31a extending from both ends thereof, to which the tip portions 23a of the respective struts 23 of the support portion 20 are connected. The connecting portion 31a and the support 23 are connected by welding the core material in the connecting portion 31a and the tip portion 23a of the support 23 together. The connection means between the connecting portion 31a of the horizontal rod 1 and each of the struts 23 is not limited to the one described above. The connection may be made by screwing from the front end portion 23a of the post 23 toward the end portion 23a. In this case, the height of the handrail portion 30 can be finely adjusted by adjusting the insertion depth of the tip portion 23a into the connecting portion 31a.

The pair of gripping rods 32 , 32 are sloped upward toward the handrail rod 33 and the distance between them is narrowed toward the handrail rod 33 . Also, as shown in FIGS. 6 and 7, the lengths of the gripping rods 32, 32 are set to the shortest length so that the hand H and the handrail rod 33 do not interfere with each other when the gripping rods 32, 32 are gripped. It is sufficient to have

The handrail rod 33 is connected to the distal end portions of the gripping rods 32, 32 via connecting portions 33a provided vertically at both ends thereof. For example, as shown in FIG. 9, the handrail rod 33 is held by the user M when standing or sitting down from the toilet bowl B, or is used in front of the entrance E when entering the bathroom, as shown in FIG. It is used to be held by a person M in a standing position, or by a user to move between the wash area W and the bathtub T in the bathroom, as shown in FIG. The length (rising dimension) of the connecting portion 33 a is appropriately set in consideration of the level difference with the horizontal rod 31 and the height position of the handrail rod 33 .

According to such a handrail 30, when standing up from a chair or a bed, the gripping rods 32, 32 of the handrail 30 can be grasped with the left and right hands. By making the user M take such a gripping posture, when the user leans his/her upper body toward the auxiliary handrail 1 side from the posture of sitting on a chair or bed and puts his or her weight on the handrail portion 30, the wrist is and the angle of the forearm (the distance between both elbows) are naturally guided to ideal angles that do not put excessive load on the wrist and upper arm, respectively, so that the gripping rods 32, 32 can be stably and sufficiently held during the rising motion. can be pushed to As a result, even a weak user can firmly transmit force to the auxiliary handrail 1 when standing or sitting down, so that the center of gravity becomes forward and a smooth rising motion can be promoted.

If all or part of the horizontal rods 31 and the handrail rods 33 of the handrail portion 30 described above have a substantially elliptical cross-sectional shape, the grip of the handrail portion 30 will be very good with the hand. On the other hand, it is preferable that the gripping rods 32, 32 have a circular cross-sectional shape in terms of ease of gripping. In addition, it is preferable that the materials and thicknesses of these materials are such that they give the user a firm and non-slip feel when gripped. Further, the handrail portion 30 may be entirely integrally molded.

<Tilt prevention tool>
As shown in FIGS. 1 to 3, the anti-tilt device 40 is suitable when the auxiliary handrail 1 is used as a bathtub handrail in a bathroom, and is detachable from the support portion 20 of the auxiliary handrail 1. It is intended to prevent the entire auxiliary handrail 1 from unexpectedly tilting toward the wall surface by being interposed between the wall surface of the installation equipment or the wall surface in the room and the support portion 20 . That is, when used in a bathroom instead of a conventional handrail for a bathtub, as shown in FIG. 1 to 3, the anti-tilt device 40 comes into contact with the wall body T1 of the bathtub T and supports the support part 20, so that the auxiliary handrail 1 does not tilt as shown in FIG. Therefore, it is possible to prevent falling accidents.

As shown in FIGS. 5 to 7, the tilting prevention device 40 has a curved outer peripheral surface 47 that applies the Fibonacci sequence, and as shown in FIG. A suitable one is one that is rotatably mounted on the With such a configuration, the distance r between the surface of the holder portion 22 of the strut member 21 and the outer peripheral surface 47 of the anti-tilt device 40 changes steplessly around the outer peripheral surface 47. Even if the distance between the body T1 and the strut member 21 is of any dimension, the tilt prevention tool 40 can be appropriately brought into contact with the wall T1 of the bathtub T simply by rotating the tilt prevention tool 40 around the support member 21. can be made

Specifically, in the example shown in FIG. 5, an insertion hole 42 through which the holder portion 22 of the support member 21 is inserted and a clamping portion 43 are integrally formed on one end side of a preventive device main body 41 having a substantially magatama shape. is provided. The insertion hole 42 has an inner diameter slightly larger than the outer diameter of the holder portion 22 of the strut member 21, and the inner space of the insertion hole 42 defines a gap portion 44 that is bent from one point on the inner peripheral surface of the insertion hole 42. It communicates with the outside of the preventive device main body 41 via. A portion defined by the gap portion 44 serves as a holding portion 43 . A bolt insertion hole 45 through which a tightening bolt (not shown) for tightening the strut member 21 is inserted is formed through the clamping portion 43 . A female threaded portion (not shown) having a is engraved inside the protector body 41 . An outer peripheral surface 47 from the outside of the insertion hole 42 of the preventive device body 41 to the tapered portion 46 on the opposite side is curved, and the radius of curvature r of the curved surface centered on the axis of the support 20 is the axis. It is gradually increased toward one direction of the periphery. As the anti-tilt device 40, it is preferable to use one having an elastic surface, such as one made of resin, so as not to damage the wall surface of housing equipment such as a bathtub or the wall surface of a room. The curved surface of the outer peripheral surface 47 may be a curved surface to which the Fibonacci sequence is applied.

In the example shown in FIG. 6, while the example shown in FIG. 5 is a solid object with a constant thickness, the entire area other than the bolt insertion hole 45 and the female screw portion is thinned to reduce weight. This is intended to reduce the thickness and material cost. The rest of the configuration is the same as that explained in FIG.

The example shown in FIG. 7 is intermediate between the example shown in FIG. 5 and the example shown in FIG. 6, and the width of the outer peripheral surface 47 is shown in FIG. It is almost the same as the original.

When attaching the anti-tilt device 40 to the auxiliary handrail 1, after pulling out the support 23 integrated with the handrail 30 and the connecting part 31a from the holder 22 of the support 21, The anti-tilt device 40 is fitted, lowered to a predetermined height position, and then attached by tightening the clamping part 43 with a tightening bolt.

<Usage example>
In the example shown in FIG. 1, the support portion 20 is erected from the support portion mounting portions 13, 13 near the edge of the base portion 10 so that the handrail rods 33 of the handrail portion 30 are positioned outside the base portion 10. The handrail rod 33 is installed above the wall T1 of the bathtub T or above the inner wall surface of the bathtub T so that the support part 20 is close to the wall T1 of the bathtub T. As shown in FIG. In this case, the peripheral edge portion 12 of the base portion 10 contacts the wall T1 of the bathtub T, and a space is inevitably formed between the support portion 20 of the auxiliary handrail 1 and the wall T1 of the bathtub T. Therefore, when a lateral load is applied to the auxiliary handrail 1 in the bathtub T direction, there is a high possibility that the auxiliary handrail 1 will tilt toward the bathtub T with the peripheral edge portion 12 of the base portion 10 as a fulcrum, as shown in FIG. , there is a risk of inviting an accident such as the user falling over due to this. Therefore, the anti-tilt device 40 is attached to the supporting portion 20 as described above. The mounting position is preferably near the upper end of the wall T1 of the bathtub T, as shown in FIGS. Here, the tilting preventive device 40 has a curved outer peripheral surface 47, and the radius of curvature r of the curved surface around the axis of the support 20 gradually increases in one direction around the axis. Since it is rotatable with respect to the support portion 20, the interval (corresponding to the radius of curvature r) between the surface of the support portion 20 and the outer peripheral surface 47 of the anti-tilt device 40 is steplessly around the outer peripheral surface 47. , the wall T1 of the bathtub T can be adjusted to the wall T1 of the bathtub T simply by rotating the anti-tilt tool 40 about the support 20 regardless of the distance between the wall T1 of the bathtub T and the support 20. The anti-tilt device 40 can be properly abutted. As a result, it is possible to reliably prevent overturning accidents caused by tilting of the auxiliary handrail 1 as described above.

When the user M moves between the washing place W and the bathtub T, as shown in FIG. Become. At this time, the auxiliary handrail 1 is stably maintained on the washing area W without tilting toward the bathtub T side due to the action of the anti-tilt device 40, so that the user M can avoid the washing area W and the bathtub, both of which are slippery. You can safely move between T.

The tipping prevention device disclosed in the present application can be applied to other than the auxiliary handrail as described above. For example, as disclosed in Japanese Patent Application Laid-Open Nos. 2013-92034 and 2014-214473, etc., a so-called projection that is erected close to the wall surface while being stretched between the floor and the ceiling. It can also be applied to struts. By attaching the tipping prevention device disclosed in the present application to such a tension post, even if a lateral load is applied to the post in the direction of the wall surface, the post can be supported against the load, preventing the post from tilting or falling. can be prevented. In addition, the kind of support|pillar is not restricted to an above-described thing.

In addition, the present invention can be embodied in various other forms without departing from its spirit or essential characteristics. Therefore, the above-described embodiments are merely examples in every respect, and should not be construed in a restrictive manner. The scope of the present invention is indicated by the description of the claims, and is not restricted by the text of the specification and the description of the drawings. Furthermore, all modifications and changes that fall within the equivalent scope of claims are within the scope of the present invention.

1 Auxiliary handrail 10 Base part 20 Support part 30 Handrail part 40 Tilt prevention tool 47 Outer peripheral surface

Claims (2)

It is detachably and rotatably attached to a support post erected close to a wall surface, and is interposed between the wall surface and the support support, thereby preventing the support support from unexpectedly tilting toward the wall surface. A tilting prevention tool that prevents
The anti-tilt device has a curved outer peripheral surface, and the radius of curvature of the curved surface centered on the axis of the column gradually increases in one direction around the axis. Anti-tilt device. The tilting prevention device according to claim 1,
An auxiliary handrail that includes a base installed on the floor, a support erected on the base, and a handrail provided on the upper end of the support, and is attached to the support. protector.

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