JP4256758B2 - Removable handrail for crossing doorways - Google Patents

Description

  This invention is installed in an arrangement that horizontally traverses entrances and exits such as entrances and living rooms such as ordinary houses and nursing facilities, or bathrooms, toilets, etc. mainly for self-help or care for the elderly or the physically handicapped, It belongs to the technical field of detachable handrails for crossing doorways, which is used for grabbing elderly people and physically handicapped people. In addition, the present invention relates to a detachable handrail for crossing an entrance / exit, in which a detachable operation can be performed with one touch so that a normal person, an elderly person, a physically handicapped person, etc. can pass through the entrance / exit without being obstructed.

  In the following patent document 1 of the present applicant, a handrail material for self-help or care for an elderly person or a physically handicapped person is installed in an arrangement that crosses the entrance / exit opening in the horizontal direction and the continuity of the handrail A detachable handrail for crossing the doorway is disclosed. When a healthy person, an elderly person, a disabled person, etc. pass through the doorway, it is easy to remove the handrail material so that it does not get in the way and hang it to one side so that the doorway is fully open It is. Therefore, the handrail material is configured to be telescopic by fitting a thick tube and a thin tube to a telescopic. Moreover, in the hollow portion of the handrail material, an elastic body for tension is installed with its both ends fastened to the deep end portions of the thick tube and the thin tube, and even if the handrail material is in the shortest contracted state, it is appropriate. It is configured to maintain a tensile state.

  The invention according to the applicant's Japanese Patent Application No. 2002-281399 also relates to a detachable handrail for crossing the doorway, and a handrail support bracket is installed on a building wall on both sides of the doorway opening. The fitting plates at both ends are configured to be attached to and detached from the handrail support bracket by one-touch operation of the lock pin.

JP 2001-107530 A

In the detachable handrail for crossing the doorway disclosed in Patent Document 1, one end of the handrail material is rotatably supported on the building wall by a rotary joint, and the other end of the handrail is made of the building wall. It is detachably supported with respect to the support. As shown in detail in FIGS. 11 to 14 and FIGS. 16 to 18 of the publication, the structure for removably supporting the handrail material to the support tool is an advance / retreat pin mechanism for grasping a grip ball and pulling up and out. It has been adopted.
Therefore, in order to attach and detach the detachable handrail for crossing the doorway with respect to the support on the wall surface of the building, hold the end of the handrail with one hand and the advance / retreat pin of the support with the other hand. It is a necessary condition to perform an operation of grasping the grip ball and pulling it up and performing a procedure for removing the handrail material from the support when the pin comes off. In short, the user must use both hands to attach and detach the handrail material.
Therefore, when the person who is going to go through the doorway has a baggage in one hand, or the caregiver is in an assisting state where an elderly person or a handicapped person is supported with one hand, it is impossible to attach and detach the handrail. close. Therefore, there is no other way to remove the baggage once or to grab the elderly or physically handicapped person who is assisting a handrail at a nearby location, etc. It is bad and inconvenient.

In that respect, the detachable handrail for crossing the entrance and exit according to the invention of the above-mentioned Japanese Patent Application No. 2002-281399 which is the prior application is a fitting plate having U-shaped grooves attached to both ends or one end of the handrail material. A structure that fits to the locking piece of the handrail support bracket attached to the building wall on either side or one side of the entrance opening, and is attached and detached by moving the lock pin that moves the long hole formed on both side walls of the fitting plate In this aspect, the handrail material can be attached and detached easily and reliably by moving the lock pin with at least one hand.
However, in the case of the above-mentioned prior application, the handrail material is either completely removed from the handrail support brackets on both sides of the entrance / exit opening and placed at an appropriate location in the vicinity or the handrail material. If one side end is supported by a rotary joint and the fitting plate at the other end is detached from the handrail support bracket, the handrail material is rotated upward about the rotary joint. Since it is configured to stand upright and support so as to be a vertical handrail, it is not necessarily the case that the handrail material fitting plate is removed from the handrail support bracket. ing.

  An object of the present invention is to support one end of a handrail material with a rotary joint, and to attach and detach a fitting plate provided on the other end to a locking piece of a handrail support bracket by operating a lock pin. Up to this point, the structure is partly in common with the above-mentioned invention of the prior application, but the handrail material is configured to be stretchable and a tension elastic body is built in, and it is installed in a state in which it is extended to the entrance opening appropriately. In addition, the handrail support bracket is clamped by a downward hook-shaped retaining portion provided at the front end portion of the fitting plate, and the fitting plate and the retaining portion are secured from the locking piece and the handrail supporting bracket. When you let go, you just need to release your hand, and then the handrail material will shrink to a length that will not hit the floor of the building, and will be supported in a suspended form on the rotary joint. A removable handrail for crossing the doorway It is to provide.

As means for solving the above-described problems of the prior art, a removable handrail 1 for crossing an entrance according to the invention described in claim 1 is:
The handrail material 10 is disposed horizontally across the entrance opening 20, one end of which is supported by the rotary joint 5 on the building wall 21 on one side of the entrance opening 20, and the other end of the entrance opening 20. In the handrail 1 for crossing the doorway, which is supported by being detachably connected to the handrail support bracket 6 attached to the building wall 21 on the other side,
The handrail material 10 is formed by fitting a thick tube 11 and a thin tube 12 so as to be stretchable, and an elastic body for tension 13 inserted into the hollow portions of both tubes has both ends at the back end of the thick tube 11 and the thin tube 12. Each of which is fixed to the back end of the tube, and is configured to maintain an appropriate tensile state even when both tubes are in the shortest contracted state,
A connecting plate 28 provided at one end of the handrail 10 is connected to a rotating body 5a of a rotary joint 5 attached and fixed to a building wall surface 21 on one side of the entrance opening 20;
A fitting plate 25 having a downward U-shaped groove 24 is provided at the other end portion of the handrail material 10, and inclined long holes 26 are formed on both side walls of the fitting plate 25. A lock pin 27 that is horizontally passed through the long holes 26 on both side wall surfaces is installed so as to be movable in the longitudinal direction of the long holes 26;
The handrail support bracket 6 is installed at the handrail support position on the building wall 21 on the other side of the entrance / exit opening 20 so as to restrict the front end position of the fitting plate 25 of the handrail material 10 in the orthogonal direction. ,
The handrail support bracket 6 is provided with a vertical plate-like locking piece 6a in which the U-shaped groove 24 of the fitting plate 25 of the handrail material 10 is fitted inward, and this locking piece 6a. The projecting dimension in the inward direction is such that the lock pin 27 movably installed in the elongated hole 26 of the fitting plate 25 can pass when it is located closer to the inner end of the elongated hole 26. An upper side portion on which the upper surface wall of the U-shaped groove 24 of the fitting plate 25 is placed in the stop piece 6a is a shape suitable for an operation of moving the lock pin 27 toward the inner end along the long hole 26 inward. The lower side portion of the locking piece 6a is formed so that the lock pin 27 passes through the long hole 26 with the upper surface wall of the U-shaped groove 24 of the fitting plate 25 placed on the upper side portion of the locking piece 6a. It has a shape that can move to the position near the outer edge,
When the upper surface wall of the fitting plate 25 is placed on the upper side portion of the locking piece 6a at the distal end portion of the fitting plate 25 of the handrail material 10, the hook-shaped retaining member has a downward hook shape sandwiching the upper side portion of the handrail support bracket 6 That part 29 is formed,
The handrail material 10 can remove the fitting plate 25 and the retaining portion 29 from the handrail support bracket 6 by an operation of moving the lock pin 27 of the fitting plate 25 at one end to the inner end position. Is released from the rotary joint 5 with a length that does not reach the floor 30 of the building, and conversely, the fitting plate 25 and the retaining portion 29 are fitted to the locking piece 6a and the handrail support bracket 6. The connection is performed by locking the fitting plate 25 with the lock pin 27.

The invention described in claim 2 is the detachable handrail 1 for crossing the doorway described in claim 1,
The thick tube 11 and the thin tube 12 constituting the handrail material 10 are resin-coated adhesive steel tubes in which a synthetic resin such as AAS resin is coated on the outer peripheral surface of the steel tube in a thin and uniform layer, and the thick tube 11 has an outer diameter. Is about 32 mm, the inner diameter is about 29 mm, the thin tube 12 has an outer diameter of about 28 mm and an inner diameter of about 25 mm, and the tension elastic body 13 is a rubber tube or rubber cord made of natural rubber or synthetic rubber and having a tubular shape. It is characterized by that.

  The detachable handrail 1 for crossing the entrance and exit according to the present invention has one end portion of the handrail material 10 supported by the rotary joint 5 and the fitting plate 25 provided at the other end portion is supported by the handrail support bracket 6. The locking piece 27 can be attached to and detached from the locking piece 6a by the operation of the lock pin 27. Further, the handrail material 10 can be expanded and contracted, and the tension elastic body 13 is built in, so that even when the shortest contracted state is obtained, an appropriate tension is achieved. Since it is configured to maintain the state, the handrail material 10 is installed in a state where it is extended with respect to the entrance / exit opening 20 so as to have flexibility in application to the size of the opening width, and dimensional accuracy in manufacturing (particularly, No strictness is required over the length of the handrail.

  Moreover, the fitting plate 25 provided at the other end of the handrail material 10 can be easily and reliably detached from the handrail support bracket 6 by the movement operation of the lock pin 27 with one hand, and the handrail material is left as it is. When the hand 10 is released, the handrail material 10 immediately contracts to a length that does not hit the floor 30 of the building, is supported by the rotary joint 5 in a suspended form, and does not require any trouble. On the contrary, in order to return the handrail material 10 suspended and supported by the rotary joint 5 to the original installation state, the handrail material 10 is held with one hand and rotated upward while the fitting plate at the other side end. 25 is covered on the locking piece 6a of the corresponding handrail support bracket 6 and the lock pin 27 is slightly moved in the long hole 26, so that it is also locked and supported in a one-touch manner. Can do. In short, the handrail material 10 can be attached and detached with a simple one-touch operation with one hand. Therefore, it can be conveniently used even when the user has a baggage in one hand or the caregiver is in an assisting state where an elderly person or a physically handicapped person is supported with one hand, and is easy to use.

  In the present invention, when the upper surface wall of the fitting plate 25 is placed on the upper side portion of the locking piece 6a at the front end portion of the fitting plate 25 provided on the other side end portion of the handrail material 10, the upper side of the handrail support bracket 6 is provided. Since the hook-shaped retaining part 29 is formed in the downward direction across the part, even if the pulling force by the tension elastic body 13 is constantly acting on the handrail material 10, it is locked with any unexpected momentum. Even if the pin 27 is detached from the locking piece 6a, the retaining member 29 is held so that the retaining member 29 sandwiches the upper side portion of the handrail supporting bracket 6, so that the handrail material 10 is not used. There is no risk of falling off and it is safe to use.

The handrail material 10 fits the thick tube 11 and the thin tube 12 in a telescopic manner, and both ends of the elastic body 13 for tension inserted into the hollow portions of both tubes are connected to the back end portion of the thick tube 11 and the thin tube 12. Each pipe is fixed to the back end, and is configured to maintain an appropriate tensile state even when both pipes are in the shortest contracted state.
The connecting plate 28 provided at one end of the handrail material 10 is connected to the rotating body 5a of the rotary joint 5 attached and fixed to the building wall surface 21 on one side of the entrance opening 20.
A fitting plate 25 having a downward U-shaped groove 24 is provided at the other end portion of the handrail material 10, and inclined long holes 26 are formed on both side wall surfaces of the fitting plate 25. A lock pin 27 that is horizontally passed through the long holes 26 on both side wall surfaces of the fitting plate 25 is installed so as to be movable in the longitudinal direction of the long holes 26.
The handrail support bracket 6 is installed at a handrail support position on the building wall surface 21 on the other side of the entrance / exit opening 20 so as to restrict the front end position of the fitting plate 25 of the handrail material 10 in the orthogonal direction.
The handrail support bracket 6 is provided with a vertical plate-like locking piece 6a inwardly into which the U-shaped groove 24 of the fitting plate 25 of the handrail material 10 is fitted. The projecting dimension of the locking piece 6a in the inward direction is such that the lock pin 27 movably installed in the long hole 26 of the fitting plate 25 of the handrail 10 is positioned closer to the inner end of the long hole 26. It is a dimension that can pass. In the locking piece 6a, the upper side portion on which the upper surface wall of the U-shaped groove 24 of the fitting plate 25 is placed is inwardly moved to the position closer to the inner end along the long hole 26. The lower side of the locking piece 6a has a suitable shape, and the lock pin 27 passes through the elongated hole 26 with the upper wall of the U-shaped groove 24 of the fitting plate 25 resting on the upper side of the locking piece 6a. A shape that can be locked by moving to a position closer to the outer end.
When the upper surface wall of the fitting plate 25 is placed on the upper side portion of the locking piece 6a at the distal end portion of the fitting plate 25 of the handrail material 10, the hook-shaped retaining member has a downward hook shape sandwiching the upper side portion of the handrail support bracket 6 A portion 29 is formed.
The handrail material 10 moves the locking plate 25 and the retaining portion 29 from the locking piece 6a and the handrail support bracket 6 by an operation of moving the lock pin 27 of the fitting plate 25 at one side end toward the inner end. If it can be removed with one hand and the handrail 10 is released as it is, it will shrink to a length that does not reach the floor 30 of the building and will be suspended from the rotary joint 5. On the contrary, the fitting plate 25 and the retaining portion 29 are fitted to the locking piece 6 a and the handrail support bracket 6, and the fitting plate 25 is locked and connected by the lock pin 27.

Examples of the present invention will be described below.
FIG. 1 shows a detachable handrail 1 for crossing an entrance / exit according to the present invention installed in an arrangement horizontally traversing along one side of a door 4 attached to an entrance / exit opening 20 (see FIG. 2) of a building. Thus, an embodiment is shown in which continuity with neighboring handrails 2 and 3 is secured. One end of the handrail 10 is supported by the rotary joint 5 attached to the building wall 21 on one side of the entrance opening 20, and the other end is attached to the building wall 21 on the other side of the same entrance opening 20. The handrail support bracket 6 is detachably connected and supported.

2 to 6 show details of the structure of the removable handrail 1 for crossing the doorway.
First, as shown in detail in FIG. 4, the handrail material 10 is configured to be telescopic by fitting a thick tube 11 and a thin tube 12 in a telescopic manner. The thick tube 11 and the thin tube 12 constituting the handrail material 10 are each composed of AAS resin or the like on the outer peripheral surface of the steel pipe in consideration of the strength and ease of handling as a handrail, the good grip, and the aesthetic appearance. A resin-coated adhesive steel pipe in which a resin is coated in a thin and uniform layer and bonded is preferably used. The thick tube 11 has a specification with an outer diameter of about 32 mm and an inner diameter of about 29 mm, and the thin tube 12 has a specification with an outer diameter of about 28 mm and an inner diameter of about 25 mm (the invention according to claim 2). In the hollow portion of the thick tube 11 and the thin tube 12, the rubber tube 13 illustrated in FIG. 6 is used as an elastic body for tension, and both ends thereof are respectively connected to the deep end portion of the thick tube 11 and the deep end portion of the thin tube 12. Even if both pipes (handrail material 10) are in the shortest contracted state, they are configured to maintain an appropriate tensile state. As the means, natural rubber or synthetic rubber products having an outer diameter of 11 mm and an inner diameter of 8 mm are used for the rubber tube 13 as an example. However, not only the rubber pipe but also a so-called rubber string can be used (the invention according to claim 2). As shown in FIG. 6, the end of the rubber tube 13 is passed through the annular portion of the end fitting 14 and folded back to an appropriate length, the folded portion is overlapped with the main body, and the annular crimp fitting 15 is fitted. They are crushed and firmly connected.

  As shown in FIG. 4, the rubber tube 13 having the end fittings 14 attached to both ends as described above hooks the end fitting 14 on one side to the outer end of the thick tube 11, and goes to the outer end. The end cap 16 for a thick pipe is fitted, the end fitting 14 is sandwiched between the end cap 16 and the end cap 16, and then the end cap 16 is firmly fixed to the thick pipe 11 with a set screw 17 and stopped. Wearing is done. The end metal fitting 14 on the other side of the rubber tube 13 is also hooked to the outer end of the thin tube 12, and an end cap 18 for thin tube is fitted into the outer end, and the end cap 14 is inserted between the end cap 18 and the rear end of the end tube 18. After the metal fitting 14 is sandwiched, the end cap 18 is firmly fixed to the thin tube 12 by the set screw 17 and is fixed. Therefore, by setting the extension dimension of the rubber tube 13 in advance for the length of the shortest contracted state of the thick tube 11 and the thin tube 12 fitted in a telescopic manner, Even when the thin tube 12 (handrail material 10) is in the shortest contracted state, it is configured to maintain an appropriate tensile state. Reference numeral 19 in the figure denotes a protective cap that covers the inner end of the thick tube 11 so as to be easily grasped.

In the handrail material 10 having the above-described configuration, a connecting plate 28 is provided on the end surface of the end cap 16 of the thick tube 11, which is one end portion thereof, and the building wall 21 on one side of the entrance opening 20 is shown in FIG. The rotary body 5a and the set screw 31 of the rotary joint 5 attached and fixed in this manner are connected in a so-called pin state.
The illustrated rotary joint 5 has a base plate fixed to the building wall 21 with a wood screw 32 or the like. The rotating body 5a is rotatably attached to a support shaft 5b protruding from the base plate in a direction perpendicular to the wall surface (at a right angle). Therefore, when the handrail material 10 is released, the handrail material 10 rotates around the support shaft 5b of the rotary joint 5 and hangs down, and is suspended and supported as shown by a two-dot chain line in FIG. . When the handrail material 10 is in the shortest contracted state by the above-described operation of the rubber tube 13, it is designed and manufactured in advance so that the length is slightly shorter than the height dimension from the position of the rotary joint 5 to the floor 30 of the building. Thus, the handrail material 10 suspended and supported by the rotary joint 5 is supported without hitting the floor surface 30.

  A fitting plate 25 having a downward U-shaped groove 24 protruding in the tube axis direction is provided on the end face portion of the end cap 18 of the narrow tube 12 corresponding to the other end portion of the same handrail material 10. In order to make it easier to understand FIG. 3, inclined long holes 26 are formed on both side wall surfaces of the fitting plate 25, and lock pins 27 that pass horizontally through the long holes 26 on both side wall surfaces are formed. The long hole 26 is installed so as to be movable in the longitudinal direction.

On the other hand, the handrail is arranged so as to project in the orthogonal direction so that the tip of the fitting plate 25 of the handrail material 10 abuts and is regulated at the handrail support position on the building wall surface 21 on the other side of the entrance opening 20. A support bracket 6 is installed.
In the illustrated handrail support bracket 6, the base plate 6 b is fixed to the wall surface 21 with a wood screw 32 or the like, and the support plate 6 c protrudes from the base plate 6 b in a direction perpendicular to the wall surface (at a right angle). A vertical plate-like locking piece 6a into which the U-shaped groove 24 of the fitting plate 25 is fitted is provided in the inward direction (side on which the handrail material 10 is present) from the support plate 6c. The projecting dimension of the locking piece 6a in the inward direction is a dimension that can pass when the lock pin 27 movably installed in the long hole 26 of the fitting plate 25 is located near the inner end of the long hole 26. ing. In the locking piece 6 a, the upper side portion on which the upper surface wall of the U-shaped groove 24 of the fitting plate 25 is placed is arranged inwardly with the lock pin 27 along the elongated hole 26 inward as shown in FIG. 3. The shape is rounded down so that the operation of moving toward the end position can be performed smoothly. The lower side portion of the locking piece 6a is such that the upper surface wall of the U-shaped groove 24 of the fitting plate 25 is placed on the upper side portion of the locking piece 6a, and the lock pin 27 is located in the long hole 26 and closer to its outer end. In order to be able to move smoothly to the position and to achieve the locking effect of the lock pin 27, it is so-called a downwardly inclined shape parallel to the long hole 26. The lock pin 27 moved to the position near the outer end in the long hole 26 does not return backward due to its weight effect, and securely locks the fitting plate 25 to the locking piece 6a.

When the upper surface wall of the fitting plate 25 is placed on the upper side of the locking piece 6a at the tip of the fitting plate 25 of the handrail material 10, as shown in FIG. 3, the support plate of the handrail support bracket 6 is provided. A hook-shaped retaining portion 29 having a hook shape is formed in the downward direction to sandwich the upper side portion of 6c in the thickness direction.
Therefore, as described above, the handrail material 10 tends to contract due to the pulling by the rubber tube 13 as described above, but the retaining portion 29 is located on the upper side portion of the support plate 6c of the handrail support bracket 6 in the thickness direction. With the retaining function sandwiched between the two, a stable support state and an erected state are always maintained, and the facility is highly safe in use.

Since it is said structure, in order to remove the handrail 1 of this invention, the one side edge part of the handrail material 10 is grasped, and the lock pin 27 of the fitting board 25 is moved to a position near an inner end with a fingertip. By performing the operation, the fitting plate 25 and the retaining portion 29 can be easily and reliably removed with one hand from the locking piece 6a and the handrail support bracket 6 with one hand. When the hand is released as it is, the handrail 10 is in a suspended state from the rotary joint 5 with a length that does not reach the floor 30 of the building, so that it does not take time. On the contrary, in order to install the handrail material 10 again, the free end side of the handrail material 10 is gripped and extended as shown in FIGS. 5B and 5C to support the retaining portion 29 and the fitting plate 25 by handrail. The bracket 6 and the locking piece 6a are fitted. And operation which locks the fitting board 25 to the latching piece 6a with the lock pin 27 can also be achieved by performing with one hand.
Therefore, even if a person who is going to go through the entrance / exit opening 20 has a baggage in one hand, or a caregiver supports an elderly person or a disabled person with one hand, the entrance / exit opening 20 is blocked. The handrail material 10 can be removed by one-handed operation and passed as it is, which is convenient and very convenient.

It is the front view which showed the use condition of the detachable handrail for entrance / exit crossing which concerns on this invention. It is the top view which expanded and showed the handrail. It is the front view which expanded and showed the right end part of the handrail. It is sectional drawing which expanded and showed the structure of the handrail. AC is the perspective view which showed the use condition of the handrail in steps. A and B are the front view and bottom view which showed the edge part structure of the rubber tube.

Explanation of symbols

1 Handrail 10 Handrail material
20 Entrance / exit opening 5 Rotary joint 21 Wall of building
6 Bracket for supporting railing 11 Thick tube 12 Narrow tube 13 Elastic body for tension (rubber tube)
28 connecting plate 24 U-shaped groove 25 fitting plate 26 long hole 27 lock pin 6a locking piece 29 retaining portion

Claims (2)

A handrail material is arranged horizontally across the entrance opening, one end of which is supported by a rotary joint to the building wall on one side of the entrance opening, and the other end is the building wall on the other side of the entrance opening. In the handrail for crossing the doorway, which is detachably connected to and supported by the handrail support bracket attached to
The handrail material consists of a thick tube and a thin tube that can be stretched together, and the elastic body for tension inserted into the hollow part of both tubes is connected to the deep end of the thick tube and the deep end of the thin tube, respectively. Is configured to maintain an appropriate tensile state even when both pipes are in the shortest contracted state,
The connecting plate provided at one end of the handrail material is connected to a rotary joint that is attached and fixed to the building wall on one side of the doorway opening,
A fitting plate having a downward U-shaped groove is provided at the other end portion of the handrail material, and inclined long holes are formed on both side wall surfaces of the fitting plate. A lock pin that is passed through in the horizontal direction in common is installed so as to be movable in the longitudinal direction of the slot,
A handrail support bracket is installed at a handrail support position on the building wall on the other side of the entrance opening, with an arrangement that regulates the front end position of the fitting plate of the handrail material in the orthogonal direction,
The bracket for supporting the handrail is provided with a vertical plate-like locking piece inwardly into which the U-shaped groove of the fitting plate of the handrail material is fitted, and the locking piece is directed inwardly. The protruding dimension is such that the lock pin, which is movably installed in the elongated hole of the fitting plate, can pass when it is located near the inner end of the elongated hole. The upper side portion on which the upper surface wall is placed has a shape suitable for the operation of moving the lock pin toward the inner end along the long hole toward the inside, and the lower side portion of the locking piece is formed on the fitting plate. The lock pin is configured to be movable in the elongated hole to a position near its outer end with the upper surface wall of the U-shaped groove placed on the upper side of the locking piece,
When the upper surface wall of the fitting plate is placed on the upper side of the locking piece, a hook-shaped retaining portion is formed at the front end of the fitting plate of the handrail material so as to sandwich the upper side of the handrail support bracket. Being
The handrail can be removed from the handrail support bracket by moving the lock pin of the mating plate at one end to the inner end position. It is suspended from the rotary joint with a length that does not reach the floor surface.On the other hand, the fitting plate and retaining part are fitted to the locking piece and the handrail support bracket, and the fitting plate is locked by the lock pin. A removable handrail for crossing an entrance, characterized in that it is performed. The thick pipe and thin pipe constituting the handrail material are each a resin-coated adhesive steel pipe in which a synthetic resin such as AAS resin is coated on the outer peripheral surface of the steel pipe in a thin and uniform layer, and the outer diameter is about 32 mm. The inside diameter is about 29 mm, the thin tube has an outside diameter of about 28 mm, and the inside diameter is about 25 mm, and the elastic body for tension is a rubber tube or rubber string made of natural rubber or synthetic rubber and having a tubular shape, A detachable handrail for crossing the doorway according to claim 1.

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