JP2020190083A - Coping of handrail - Google Patents

Abstract

To provide a coping of a handrail capable of being mounted and fixed to a core material by bending a covering material without heating it when constructing the handrail along a turning part such as a corner part.SOLUTION: A handrail is composed of a core material 1 and a covering material 2, and the core material 1 is provided with engaging parts 12 extending in the longitudinal direction of the handrail on both sides. In a coping of the handrail with a locking claw 22 facing open end edges 21 on both sides of the opening part of the covering material 2, the locking claw 22 facing the open end edge 21 of the covering material 2 is formed separately from a cylindrical body 20, and is continuous in the longitudinal direction of the handrail, and is made of a hard material so as not to be unexpectedly detached from the core material 1. In order to make it easier to flex according to the curvature of the core material 1, the tip side part of the cylindrical body 20 is thinner than the base side, which is fixed to a seat part 20a of the cylindrical body 20, via a step. A convex strip 12a extending in the longitudinal direction of the handrail is formed on the inside surface of the engaging part 12, a recess 22a is formed on the inside surface of the tip side part of the locking claw 22, and the convex strip 12a and the recess 22a are engaged with each other.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cap tree for attaching a flexible coating material to a hard core material to form a continuous handrail having a curved portion.

As a cap tree of a handrail attached to a wall surface of a corridor, a staircase, etc., Patent Document 1 describes a metal core material 51 such as aluminum and a resin covering material 52 for coating the core material 51 as shown in FIG. What consists of is described.

The core material 51 has a U-shaped cross section with an open lower surface, and has concave groove-shaped engaging portions 51a at the lower portions on both sides. The covering material 52 has a C-shaped cross-sectional shape in which the lower part of the cylinder is open, and includes locking claws 52a protruding inward facing the open end edges on both sides of the open portion. As shown in FIG. 17, the locking claws 52a are continuous in the length direction of the handrail.

Using such a cap tree, as shown in FIG. 18, it is interrupted at a corner portion C such as a corridor or a landing of stairs, or a portion where the direction changes (transformation portion) such as a boundary between a slope portion and a horizontal portion of stairs. When constructing a continuous handrail, a plurality of elongated cuts 51b are formed side by side on at least one side of a portion corresponding to a turning portion such as a corner portion C of the core material 51.

Then, the core material 51 is curved with the notch 51b on the inner peripheral side, and the upper portion of the bracket B attached to the wall surface is inserted into the open portion on the lower surface of the core material 51 to support the core material 51 by the bracket B. In this state, the core material 51 is covered with the covering material 52 by bending it.

At this time, since the locking claw 52a continuous in the length direction of the handrail acts as a rib that opposes the force to bend, an extremely large force is required to bend and bend the handrail at room temperature. ..

Therefore, a thermoplastic resin that can be easily deformed as the temperature rises is used as the material of the covering material 52, and when the covering material 52 is attached to the core material 51, the covering material 52 is preheated and softened. It is bent in a high temperature state, the open portion of the covering material 52 is widened, the core material 51 is included inside the covering material 52, and the surface of the core material 51 is covered with the covering material 52. The covering material 52 is cooled and hardened with the passage of time, and is mounted and fixed to the core material 51.

Japanese Unexamined Patent Publication No. 2017-101544

However, as described above, in the case of a handrail cap tree in which a worker warms the covering material at the construction site and covers the covering material on the core material, it takes a considerable amount of time for the covering material to become sufficiently soft. It will affect and cause the construction period to be delayed.

In addition, the high-temperature covering material is difficult to handle, and there is also the trouble of preparing hot water and a heater for warming the covering material, which causes a problem that work efficiency becomes very poor.

Therefore, an object of the present invention is to provide a handrail cap that can be mounted and fixed to a core material by bending the covering material without heating it when constructing a turning portion such as a corner portion.

In order to solve the above problems, the present invention comprises a core material and a covering material, the core material having engagement portions extending in the length direction of the handrail on both sides, and the covering material is the circumference of a tubular body. A part of the direction is open, and it has a locking claw that protrudes inward facing the open edge on both sides of the open part.
In a handrail cap tree in which the coating material is covered with the core material due to elastic deformation of the coating material, the locking claw is engaged with the engaging portion, and the coating material is attached and fixed to the core material. ,
The locking claws facing the open end edges of the covering material are separate from the tubular body covering the outside of the core material, are continuous in the length direction of the handrail, and do not unexpectedly come off from the core material. As described above, a material harder than the portion facing the open end edge of the tubular body is used, and from the base side fixed to the seat portion of the tubular body so as to be easily bent according to the curvature of the core material. However, the shape of the tip side is thinned through the step,
A ridge extending in the length direction of the handrail is formed on the inner surface of the engaging portion of the core material, and a recess is formed on the inner surface of the tip side portion thinner than the base side of the locking claw of the covering material. Being done
With the entry of the locking claw into the engaging portion, the ridge and the recess are engaged with each other.

Further, instead of the above configuration, the core material is composed of a core material and a covering material, and the core material is provided with engaging portions extending in the length direction of the handrail on both sides, and the covering material is a part of the tubular body in the circumferential direction. Is open and has locking claws that project inward facing the open edges on both sides of the open portion.
In a handrail cap tree in which the coating material is covered with the core material due to elastic deformation of the coating material, the locking claw is engaged with the engaging portion, and the coating material is attached and fixed to the core material. ,
The locking claws facing each open end edge of the covering material are divided into small pieces arranged at intervals in the length direction of the handrail.
In the curved portion of the core material, the distance between adjacent locking claws of the coating material is increased on the outer peripheral side of the curvature of the core material and reduced on the inner peripheral side, so that the covering material is the core material. It was supposed to be curved to follow.

Further, in the cap tree of the handrail in which the locking claw of the covering material is divided into small pieces, ridges extending in the length direction of the handrail are formed on the inner surface of the engaging portion of the core material, and each of the covering materials. A recess is formed on the inner surface of the tip side portion formed thinner than the base side of the locking claw.
With the entry of the locking claw into the engaging portion, the ridge and the recess shall be engaged with each other.
Even in the curved portion, the covering material is securely fixed to the core material so that the covering material does not unexpectedly come off from the core material.

Further, the locking claw of the covering material is assumed to have a trapezoidal shape or a triangular shape in which the width on the open end edge side is wide and the width becomes narrower as the distance from the open end edge increases.
While improving the moldability of the locking claw in the mold and reducing the resistance when bending the covering material as much as possible, after mounting on the core material, at the portion facing the open end edge of the covering material. The core material was made to be firmly held.

Further, a connecting portion is provided between the roots of the locking claws facing each open end edge of the covering material so as to bridge them, and the locking claws are integrated in a row via the connecting portion. It is assumed that the claw row member is formed and the claw row member is fixed to the inner surface of the tubular body of the covering material.
When manufacturing the covering material, the locking claws of the respective claw row members are collectively provided on the tubular body of the covering material.

Further, in any of the above configurations, the core material is formed with elongated notches extending in the circumferential direction, leaving a part thereof, arranged side by side in the length direction of the handrail.
It is assumed that the core material is curved with the notch on the inner peripheral side.
The core material can be easily curved according to the angle of the boundary between the corner portion or the slope portion of the stairs and the horizontal portion.

In the Kasagi of this handrail, the locking claw of the covering material is separated from the tubular body that covers the outside of the core material, and is continuous in the length direction of the handrail, rather than the part facing the open end edge of the tubular body. A hard material is used, and the tip side of the tubular body is thinner than the base side, which is fixed to the seat, through a step, making it easier to bend according to the curvature of the core material. Therefore, the covering material can be bent at room temperature and attached to the core material without impairing the strength of the locking claw.

Then, since the ridges on the inner surface of the engaging portion of the core material and the recesses on the inner surface of the tip end side portion of the locking claw of the covering material are engaged, the covering material is securely fixed to the core material.

Such a locking claw can be easily manufactured by extrusion molding of a resin or the like, and can be easily fixed to a tubular body.

Further, in the case where the locking claws of the covering material are divided into small pieces arranged at intervals in the length direction of the handrail, when the covering material is covered with the covering material, if the covering material is to be curved, they are adjacent to each other. Since the distance between the locking claws expands and contracts according to the diameter difference between the outer peripheral side and the inner peripheral side of the curvature of the core material, the locking claws do not interfere with the curvature of the covering material.

Therefore, regardless of the above-mentioned form of the locking claw, it is possible to bend and fix the locking claw so as to follow the core material without warming the covering material, and the workability at the time of construction of the handrail is greatly improved. It has been improved, and continuous handrails can be quickly installed along the corners such as corridors and landings of stairs, and the boundary between the slope and horizontal of stairs.

A partially cutaway perspective view showing a state in which the core material and the covering material are curved and separated according to the first embodiment of the handrail cap tree according to the present invention. The perspective view which shows the state which covered the covering material on the core material of the same above. The perspective view which shows the state before bending of the core material of the same above. The perspective view which shows the state before bending of the same covering material. (A) is an axial sectional view of the same covering material, and (b) is an XX sectional view of (a). The above (a) is a radial cross-sectional view showing the process of covering the core material with the covering material, and (b) is a radial cross-sectional view showing the state of covering the core material with the covering material. A partially cutaway perspective view showing a state in which the core material and the covering material are curved and separated in the second embodiment of the Kasagi of the handrail according to the present invention. The perspective view which shows the state which covered the covering material on the core material of the same above. The perspective view which shows the state before bending of the core material of the same above. The perspective view which shows the state before bending of the same covering material. The above (a) is a radial cross-sectional view showing the process of covering the core material with the covering material, and (b) is a radial cross-sectional view showing the state of covering the core material with the covering material. In another embodiment of the above, (a) is a radial cross-sectional view showing a process of covering the core material with the covering material, and (b) is a radial cross-sectional view showing a state of covering the core material with the covering material. Axial sectional view of a covering material having a trapezoidal locking claw as above. Axial cross-sectional view of the covering material in which the above-mentioned locking claw is triangular. (A) is an axial sectional view, and (b) is an XX sectional view of (a) of the covering material in which the same locking claws are connected to form a claw row member. A radial cross-sectional view showing a state in which a covering material is put on a core material in a handrail cap tree described in Patent Document 1. Top perspective view showing the same covering material Perspective view showing the construction state of continuous handrails at corners

First, the first embodiment of the present invention will be described with reference to FIGS. 1 to 6.

As shown in the curved state of FIGS. 1 and 2, the handrail caps have a core material 1 having a U-shaped cross section with an open lower surface and a C-shaped cross section having a cylindrical shape with an open lower portion in the circumferential direction. The covering material 2 forming the above is used as a basic constituent member. The core material 1 is a hard bar made of a metal such as aluminum, and the coating material 2 is made of a resin (for example, polyvinyl chloride, nitrile rubber, etc.) and has flexibility.

As shown in FIG. 2, in the state after construction, the core material 1 is covered with the covering material 2, the groove filling material 3 is fitted in the open portion of the lower surface of the core material 1, and the outer peripheral surface of the cap tree is not cut. It becomes a cylindrical surface.

As shown in the state before bending in FIG. 3, the core material 1 includes an overhanging portion 11 that projects from the outer surfaces on both sides and bends downward at a midway position, and is formed on the lower side of the overhanging portion 11. The entrance portion 12 has a concave groove shape with an open bottom.

Further, a plurality of elongated notches 13 are formed side by side in the length direction in the portion to be curved during the construction of the core material 1. Each notch 13 reaches the bottom from the top via one side in the case of a corner portion, and extends from the bottom to both sides or from the top to both sides in the case of the boundary portion between the slope portion and the horizontal portion of the stairs. In any case, it extends to extend over half a circumference, leaving a part in the circumferential direction.

As shown in FIGS. 4 and 5, the covering material 2 includes locking claws 22 at the lower part of the tubular body 20 that protrude inward toward the open end edges 21 on both sides of the open portion.

A seat portion 20a is formed on both sides of the tubular body 20 facing the open end edges 21 so as to project inward and have a horizontal upper portion. The portion from the top portion of the tubular body 20 to the open end edges 21 on both sides is softened.

The locking claw 22 is a separate body from the tubular body 20, is continuous in the length direction of the handrail, and is covered with the core material 1 so as not to be unexpectedly removed from the core material 1. A material that is harder than the portion facing the open edge 21 of the above is used. However, the tip end side of the locking claw 22 is thinner than the base side fixed to the seat portion 20a of the tubular body 20 so as to be easily bent according to the curvature of the core material 1. It is said to have a good shape. Such a locking claw 22 can be easily manufactured by extrusion molding of a resin or the like.

Convex 12a extending in the length direction of the handrail is formed on the inner surface of the engaging portions 12 on both sides of the core material 1, and the lower surface of the ridge 12a is inclined upward toward the tip side.

Further, a recess 22a is formed on the inner side surface of the tip end side portion formed thinner than the base side of each of the locking claws 22 of the covering material 2 via a step.

When constructing a turning portion such as a corner portion of a handrail from such a core material 1 and a covering material 2, the core material 1 is curved with the notch 13 on the inner peripheral side as shown in FIG. As shown in FIG. 6, the open portion of the covering material 2 is widened, the core material 1 is covered with the covering material 2, and the covering material 2 is restored, with the core material 1 attached to the wall surface by the bracket (not shown). Along with this, the locking claw 22 enters the engaging portion 12, the ridge 12a and the recess 22a engage with each other, and the covering material 2 is attached to the core material 1.

In the handrail cap tree as described above, the locking claw 22 of the covering material 2 has a shape that easily bends according to the curvature of the core material 1 within a range where the strength is not impaired, so that the covering material 2 remains at room temperature. It can be curved with and attached to the core material 1, and the workability during construction of the handrail is greatly improved.

Then, since the ridge 12a on the inner surface of the engaging portion 12 of the core material 1 and the recess 22a on the inner surface of the tip end side portion of the locking claw 22 of the covering material 2 engage with each other, even in the curved portion of the cap tree. , The covering material 2 is securely fixed to the core material 1 so that the covering material 2 does not unexpectedly come off from the core material 1.

Next, a second embodiment of the present invention will be described with reference to FIGS. 7 to 15.

As shown in the curved state of FIGS. 7 and 8, the handrail caps have a core material 1 having a U-shaped cross section with an open lower surface and a C-shaped cross section having a cylindrical shape and an open lower portion in the circumferential direction. The covering material 2 forming the above is used as a basic constituent member. The core material 1 is a hard bar made of a metal such as aluminum, and the coating material 2 is made of a resin (for example, polyvinyl chloride, nitrile rubber, etc.) and has flexibility.

As shown in FIG. 8, in the state after construction, the core material 1 is covered with the covering material 2, the groove filling material 3 is fitted in the open portion of the lower surface of the core material 1, and the outer peripheral surface of the cap tree is not cut. It becomes a cylindrical surface.

As shown in the state before bending in FIG. 9, the core material 1 includes an overhanging portion 11 that projects from the outer surfaces on both sides and bends downward at a midway position, and is formed on the lower side of the overhanging portion 11. The entrance portion 12 has a concave groove shape with an open bottom.

Further, a plurality of elongated notches 13 are formed side by side in the length direction in the portion to be curved during the construction of the core material 1. Each notch 13 reaches the bottom from the top via one side in the case of a corner portion, and extends from the bottom to both sides or from the top to both sides in the case of the boundary portion between the slope portion and the horizontal portion of the stairs. In any case, it covers more than half a circumference in the circumferential direction.

As shown in FIG. 10, the covering material 2 includes locking claws 22 protruding inward toward the open end edges 21 on both sides of the open portion at the lower portion of the tubular body 20.

The locking claw 22 is divided into small pieces arranged at intervals in the length direction of the handrail, and each is fixed to the inner surface of the tubular body 20 by adhesion, heat fusion, or the like, or is attached to the open end edge 21. It is formed by making a notch in the thick part facing it.

Here, the portion of the covering material 2 from the top portion of the tubular body 20 to the open end edges 21 on both sides is softened, and the locking claw 22 is covered with the core material 1 and the core material 1 is covered. It is hard so that it will not come off unexpectedly.

When constructing a turning portion such as a corner portion of a handrail from the core material 1 and the covering material 2 as described above, the core material 1 is curved with the notch 13 on the inner peripheral side as shown in FIG. Then, the core material 1 is covered with the covering material 2 in a state where the core material 1 is attached to the wall surface by a bracket (not shown).

At this time, if the covering material 2 is to be curved in accordance with the core material 1, the locking claws 22 of the covering material 2 are divided into small pieces arranged at intervals in the length direction of the handrail. Since the distance between the adjacent locking claws 22 expands on the outer peripheral side of the curvature of the core material 1 and decreases on the inner peripheral side, the locking claws 22 do not interfere with the curvature of the covering material 2.

Therefore, the covering material 2 is curved so as to follow the core material 1 without being warmed, and as shown in FIGS. 8 and 11, the locking claw 22 is engaged with the engaging portion 12 to engage the core material. The covering material 2 can be attached and fixed to 1, and the workability at the time of construction of the handrail is greatly improved.

Further, as in another embodiment shown in FIG. 12, ridges 12a extending in the length direction of the handrail are formed on the inner side surface of the engaging portion 12 of the core material 1, and each locking claw of the covering material 2 is formed. A recess 22a is formed on the inner surface of the 22 so that the lower surface of the ridge 12a is inclined upward toward the tip side and the portion near the tip of the locking claw 22 is easily bent from the base side via a step. May be thinly formed.

In this embodiment, since the ridges 12a and the recesses 22a engage with each other as the locking claws 22 enter the engaging portion 12, the core material 1 to the covering material 2 suddenly come into contact with each other even in the curved portion of the cap tree. The covering material 2 is securely fixed to the core material 1 so as not to come off.

Further, as shown in FIG. 13, the locking claw 22 of the covering material 2 has a trapezoidal shape in which the width on the open end edge 21 side is wide and the width becomes narrower as the distance from the open end edge 21 increases, or as shown in FIG. As such, it may be triangular.

In this case, the moldability of the locking claw 22 at the time of injection molding is improved, and the resistance when bending the covering material 2 is reduced as much as possible, and the covering material 2 is attached to the core material 1. The core material 1 can be firmly held at the portion facing the open edge 21 of the above.

Further, as shown in FIG. 15, a connecting portion 23 is provided so as to bridge between the roots of the locking claws 22 facing each open end edge 21 of the covering material 2, and the locking claws 22 connect the connecting portion 23. The claw row member 24 may be formed by being integrated in a row formed through the claw row member 24, and the claw row member 24 may be fixed to the inner surface of the tubular body 20 of the covering material 2.

With such a configuration, when manufacturing each member of the cap tree, the locking claws 22 of the respective claw row members 24 can be collectively attached to the tubular body 20 of the covering material 2, so that the covering material 2 can be attached. It can be manufactured efficiently, and the locking claw 22 is less likely to be peeled off from the tubular body 20 of the covering material 2.

1 Core material 2 Covering material 3 Groove filling material 11 Overhanging part 12 Engagement part 12a Convex 13 Notch 20 Cylindrical body 20a Seat part 21 Open end edge 22 Locking claw 22a Recessed part 23 Connecting part 24 Claw row member

Claims (6)

It is composed of a core material (1) and a covering material (2), and the core material (1) is provided with engaging portions (12) extending in the length direction of the handrail on both sides, and the covering material (2) has a tubular shape. A part of the body (20) in the circumferential direction is opened, and it is provided with a locking claw (22) protruding inward facing the open end edges (21) on both sides of the open portion.
With the elastic deformation of the covering material (2), the covering material (2) is covered with the core material (1), and the locking claw (22) is engaged with the engaging portion (12) to obtain the above. In the Kasagi of the handrail to which the covering material (2) is attached and fixed to the core material (1)
The locking claws (22) facing the open end edges (21) of the covering material (2) are separate from the tubular body (20) covering the outside of the core material (1), and are of the handrail. A material that is continuous in the length direction and harder than the portion of the tubular body (20) facing the open end edge (21) is used so as not to be unexpectedly detached from the core material (1). The tip side of the tubular body (20) is thinner than the base side fixed to the seat (20a) of the tubular body (20) through a step so that it can be easily bent according to the curvature of 1). ,
A ridge (12a) extending in the length direction of the handrail is formed on the inner surface of the engaging portion (12) of the core material (1), and the base side of the locking claw (22) of the covering material (2). A recess (22a) is formed on the inner surface of the thinner tip side part,
A handrail cap that is characterized in that the ridge (12a) and the recess (22a) are engaged with each other as the locking claw (22) enters the engagement portion (12). It is composed of a core material (1) and a covering material (2), and the core material (1) is provided with engaging portions (12) extending in the length direction of the handrail on both sides, and the covering material (2) has a tubular shape. A part of the body (20) in the circumferential direction is opened, and it is provided with a locking claw (22) protruding inward facing the open end edges (21) on both sides of the open portion.
With the elastic deformation of the covering material (2), the covering material (2) is covered with the core material (1), and the locking claw (22) is engaged with the engaging portion (12) to obtain the above. In the Kasagi of the handrail to which the covering material (2) is attached and fixed to the core material (1)
The locking claws (22) facing each open edge (21) of the covering material (2) are divided into small pieces arranged at intervals in the length direction of the handrail.
In the curved portion of the core material (1), the distance between the adjacent locking claws (22) of the covering material (2) is widened on the outer peripheral side of the curve of the core material (1) and on the inner peripheral side. A handrail cap tree characterized in that the covering material (2) is curved following the core material (1) by being reduced in size. A ridge (12a) extending in the length direction of the handrail is formed on the inner surface of the engaging portion (12) of the core material (1), and the locking claws (22) of the covering material (2) are formed. A recess (22a) is formed on the inner surface of the tip side portion formed thinner than the base side.
The handrail according to claim 2, wherein the convex strip (12a) and the recess (22a) are engaged with each other as the locking claw (22) enters the engaging portion (12). Kasagi. The locking claw (22) of the covering material (2) has a trapezoidal shape or a triangular shape having a wide width on the open end edge (21) side and narrowing as the distance from the open end edge (21) increases. The Kasagi of the handrail according to claim 2 or 3, wherein the handrail is provided. A connecting portion (23) is provided between the roots of the locking claws (22) facing the open end edges (21) of the covering material (2) so as to bridge the locking claws (22). The claw row member (24) is formed by being integrated in a row via the connecting portion (23), and the claw row member (24) is the inner surface of the tubular body (20) of the covering material (2). The Kasagi of the handrail according to any one of claims 2 to 4, wherein the nail is fixed to the nail. The core material (1) is formed with elongated notches (13) extending in the circumferential direction, leaving a part thereof, arranged side by side in the length direction of the handrail.
The handrail cap tree according to any one of claims 1 to 5, wherein the core material (1) is curved with the notch (13) on the inner peripheral side.

Images