JP7039014B2 - Fixing structure of covering material in Kasagi of handrail - Google Patents

Description

The present invention relates to a structure for fixing a covering material to a core material in a handrail cap tree installed along a corridor, stairs, or the like.

With the progress of aging, handrails are continuously installed in corridors and stairs, and a barrier-free environment is being improved. As the Kasagi of such a handrail, the one shown in FIG. 11 is described in Patent Document 1 below.

In this cap tree, a covering material 51 made of an elastic synthetic resin is covered with a metal core material 52. The covering material 51 has an opening 54 in which the grip portion 53 is cylindrical and extends in the length direction, and has folded ridges 55 on both sides of the grip portion 53. The core material 52 has a hollow structure, has an open groove 56 extending in the length direction at the bottom thereof, and has locking portions 57 on both sides thereof.

The covering material 51 is fixed to the core material 52 by engaging the folded ridge 55 with the locking portion 57. As the covering material 51, a hard material that is relatively hard to bend is used in order to secure the engagement strength between the folded ridge 55 and the locking portion 57.

Therefore, when constructing the cap tree, it is necessary to spread the opening 54 in a state where the covering material 51 is heated and softened, and cover the covering material 51 with the core material 52 before the covering material 51 cools down. , It takes a lot of time and effort to work. Further, when constructing the corner portion, it is necessary to perform the above work while bending the covering material 51, and this work is particularly difficult and requires skill.

On the other hand, in Patent Document 2 below, as shown in FIG. 12 (12A), the portion of the covering material 51 that has been hatched in a grid pattern from both sides of the grip portion 53 to the folded ridge 55 is relatively hard. A fixed structure is described in which the other parts are adjusted in hardness so as to be soft. During the construction, the covering material 51 can be spread out at room temperature and covered with the core material 52 without heating, and the engagement strength between the folded ridge 55 and the locking portion 57 is also ensured.

In this Kasagi, as shown in FIG. 12 (12B), the tip portion of the folded ridge 55 is bent outward at an angle in order to improve the engagement between the folded ridge 55 and the locking portion 57. The locking portion 57 is engraved so that the inner side thereof is immersed from the inner surface of the opening groove 56.

Japanese Unexamined Patent Publication No. 2000-170341 Japanese Unexamined Patent Publication No. 2015-194044

However, even in the Kasagi described in Patent Document 2, if the portion of the covering material 51 other than the vicinity of the folded ridges 55 on both sides is made too soft, the covering material 51 can be easily attached to the core material 52. However, there is a problem that the covering material 51 is likely to be unexpectedly detached from the core material 52 when the covering material 51 is gripped so as to be strongly twisted after construction.

Further, since the portion from both side portions of the grip portion 53 of the covering material 51 to the folded ridge 55 is hard, it is difficult to bend the covering material 51 in the length direction, and there is also a problem that it cannot correspond to the corner portion.

Therefore, an object of the present invention is to make it possible to firmly fix the covering material to the core material in the Kasagi of the handrail without impairing the workability of attaching the covering material to the core material.

In order to solve the above problems, in the present invention, an elastic covering material having an opening in which the grip portion is tubular and extends in the length direction is covered with a core material having an open groove extending in the length direction at the bottom. In the Kasagi of the handrail formed by engaging the folded ridges on both sides of the grip portion with the locking portions on both sides of the core material.
The covering material is provided with thin inner protrusions that protrude inward so as to face each other from both sides of the grip portion toward the opening.
The inner protrusions of the covering material are placed along the portions facing both sides of the opening groove of the core material, and the groove filling material of the elastic body is pushed into the opening groove of the core material through the opening of the covering material to form the core material. It was decided to fix the dressing to the core material by sandwiching the inner protrusion between the bottom and the groove filling material.

Further, it is assumed that the inner protrusion of the covering material has the bottom contact portion and the middle fold portion sequentially connected from both side ends of the grip portion toward the opening.
With the bottom contact portion and the middle folded portion of the inner protrusion bent along the corners of the bottom surface and the inner side surface facing the open groove of the core material, respectively, the inner protrusion is placed between the core material and the groove filling material. I decided to pinch it.

Further, it is assumed that the inner projecting piece of the covering material has a folded portion connected in order from both side ends of the grip portion through the bottom contact portion and the middle folded portion.
It was decided to sandwich the inner protrusion piece between the core material and the groove filling material in a state where the folded portion of the inner protrusion is folded back from the middle folded portion inside the core material along the retaining portion of the groove filling material. It is.

Further, the inner projecting piece of the covering material is provided with a notch for avoiding the receiving seat of the bracket.

In the fixing structure of the dressing in the cap tree of the handrail according to the present invention, even if the dressing is considerably soft so that the dressing can be easily put on the core material, the inner protrusion of the dressing is between the bottom of the core material and the groove filling material. Since it is sandwiched between the core materials, the coating material can be firmly fixed to the core material so that it does not come off unexpectedly, and even at the corners, the coating material can be easily bent and covered with the core material. , The work load during construction is reduced.

In addition, a notch is provided in the inner projecting piece of the covering material to avoid the receiving seat of the bracket, and when the notch of the inner projecting piece and the receiving seat of the bracket are engaged with each other, the covering material of the cap tree inclined in a staircase or the like. Even when a large weight is applied to the dressing, the dressing is prevented from slipping.

Perspective view which shows the fixing structure of the covering material in the cap tree of the handrail which concerns on 1st Embodiment of this invention. A perspective view showing the construction state of the handrail as above from below. An exploded perspective view showing the components of the handrail as above. A perspective view showing the same covering material from below. (5A) Cross-sectional view before pushing in the groove filling material, (5B) Cross-sectional view after pushing in the groove filling material in the same Kasagi. Cross-sectional view showing the mounting state of the Kasagi bracket on the wall surface as above. A perspective view showing the construction state of the handrail on the stairs as above. A perspective view showing a fixing structure of a covering material in a handrail cap tree according to a second embodiment of the present invention. A perspective view showing the same covering material from below. (10A) Cross-sectional view before pushing the groove filling material, (10B) Cross-sectional view after pushing the groove filling material in the same Kasagi. Cross-sectional view showing the Kasagi of the handrail described in Patent Document 1. (12A) A cross-sectional view showing a process of covering a core material with a covering material, and (12B) a cross-sectional view showing a state of covering a core material with a covering material in the handrail cap tree described in Patent Document 2.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a part of a handrail cap tree that adopts the fixing structure of the covering material according to the first embodiment of the present invention, and FIGS. 2 and 3 show a handrail using this cap tree and its constituent members, respectively.

This cap tree is composed of a covering material 1 made of a synthetic resin such as polyvinyl chloride having flexibility and elasticity, a core material 2 made of a metal having high rigidity such as aluminum, and a groove filling material 3 made of an elastomer. The filling material 3 is divided by a portion of a bracket 21 that supports the cap tree.

As shown in FIG. 4, the covering material 1 has a grip portion 4 having a cylindrical shape, an opening portion 5 extending in the length direction, and folded ridges 6 folded inward on both sides of the grip portion 4. The thin inner projecting piece 7 is provided so as to face inward from both side ends of the grip portion 4 toward the opening 5. The grip portion 4 may have a square tubular shape.

The inner protrusion 7 is formed by sequentially connecting the bottom contact portion 7a and the middle folding portion 7b from both side ends of the grip portion 4 toward the opening.

As will be described later, the inner protrusion 7 is provided with a notch 7d for avoiding the receiving seat 22 of the bracket 21 when the handrail is constructed. The notch 7d can be easily formed at the construction site by cutting the bottom portion 7a and the middle folding portion 7b with a cutter knife or the like.

As shown in FIG. 5A, the middle folded portion 7b has the tip end side slightly protruding from the root toward the center in the width direction of the opening 5 in the state before the groove filling material 3 is pushed.

The core material 2 has a hollow structure, has an open groove 8 extending in the length direction at the bottom thereof, and has a groove-shaped locking portion 9 having a groove-shaped locking portion 9 open downward at the protruding portion on the outer surface of both side walls.

The groove filling material 3 has an outer flange portion 10 having a bulging curved surface on the front surface, a plug portion 11 protruding from the center portion of the back surface thereof, and a tapered tapered retaining portion protruding from the tip portion of the plug portion 11 to both sides. It is supposed to consist of twelve.

When constructing a handrail with such a cap, as shown in FIG. 6, the mounting seat 23 of the bracket 21 is fixed to the wall surface W, the core material 2 is placed on the receiving seat 22, and the opening groove of the core material 2 is placed. The core material 2 is fixed to the bracket 21 by inserting the fixing member 22a of the receiving seat 22 into the 8 and rotating the core material 2 to tighten the bottom walls facing both sides of the open groove 8 of the core material 2.

Next, while the covering material 1 is kept at room temperature, it is spread out as shown by a chain wire to cover the core material 2, and then it is restored by elasticity, and the folded ridges 6 on both sides of the grip portion 4 are formed on both sides of the core material 2. Engage with the locking portion 9 of. At this time, the notch 7d of the inner protrusion piece 7 and the receiving seat 22 of the bracket 21 are made to correspond with each other so that the inner protrusion piece 7 does not interfere with the receiving seat 22.

As a result, as shown in FIGS. 5A and 5B, when the groove filling material 3 is pushed into the open groove 8 of the core material 2 through the opening 5 of the covering material 1, the retaining portion 12 is pushed in the width direction. It passes through the open groove 8 while being compressed, and is restored inside the core material 2, so that the groove filling material 3 is prevented from coming off from the open groove 8. Further, a continuous cylindrical surface is formed by the surfaces of the grip portion 4 and the outer flange portion 10.

Then, the bottom contact portion 7a and the middle folding portion 7b of the inner protrusion piece 7 are bent along the corners of the bottom surface and the inner side surface facing both sides of the open groove 8 of the core material 2, respectively, and the inner protrusion piece 7 is bent. The bottom portion 7a is sandwiched between the bottom surface of the core material 2 facing the open groove 8 and the outer flange portion 10 of the groove filling material 3, and the middle folded portion 7b of the inner protrusion 7 faces the open groove 8 of the core material 2. The covering material 1 is fixed to the core material 2 by being sandwiched between the inner side surface and the plug portion 11 of the groove filling material 3.

In the fixing structure of the covering material in the cap tree of the handrail as described above, even if the covering material 1 is made considerably soft so that it can be easily put on the core material 2, the inner projecting piece 7 of the covering material 1 is the bottom of the core material 2. Since it is sandwiched between the groove filling materials 3, the covering material 1 can be firmly fixed to the core material 2 so as not to be unexpectedly removed from the core material 2.

Further, as shown in FIG. 7, for example, even in a corner portion where wall surfaces W intersect at an angle, such as a landing of stairs, the covering material 1 can be easily bent and covered with the core material 2, and the work load at the time of construction is increased. Is reduced.

Further, the inner projecting piece 7 of the covering material 1 is provided with a notch 7d for avoiding the receiving seat 22 of the bracket 21, and the notch 7d of the inner projecting piece 7 and the receiving seat 22 are engaged with each other in a staircase or the like. It is not necessary to fix the covering material 1 to the core material 2 with an adhesive or the like because the covering material 1 is prevented from being displaced even when a large weight is applied to the covering material 1 of the inclined cap tree. ..

In the first embodiment, the inner protrusion 7 of the covering material 1 is exemplified by only the bottom contact portion 7a and the middle folding portion 7b, but as in the second embodiment shown in FIGS. 8 to 10. The inner projecting piece 7 of the covering material 1 may have a folded portion 7c connected in sequence from both side ends of the grip portion 4 via a bottom contact portion 7a and a middle folded portion 7b.

In this embodiment, as shown in FIG. 10A, both end portions of the grip portion 4 of the covering material 1 extend to the bottom surface of the core material 2, and the covering material 1 is in a state before the groove filling material 3 is pushed. The middle folded portion 7b of the inner projecting piece 7 protrudes from the root toward the tip side so that the width of the opening 5 is narrowed, and the folded portion 7c is folded back from the middle folded portion 7b.

Then, as shown in FIG. 10B, when the groove filling material 3 is pushed into the open groove 8 of the core material 2 through the opening 5 of the covering material 1, the bottom contact portion 7a and the middle of the inner protrusion piece 7 are pushed. The folded portion 7b is along the bottom surface and the inner side surface of the portion of the core material 2 facing both sides of the open groove 8, respectively, and after the retaining portion 12 of the groove filling material 3 has passed through the open groove 8, the folded portion 7c is the core material. Inside No. 2, the repulsive force causes the retaining portion 12 to come into close contact with the step on the base side.

In such a fixing structure, even if the bottom contact portion 7a of the inner protrusion piece 7 is small, the inner protrusion piece 7 is prevented from coming off from the open groove 8 by the folded-back portion 7c, and the covering material 1 is firmly fixed to the core material 2. Will be done.

1 Covering material 2 Core material 3 Groove filling material 4 Grip part 5 Opening part 6 Folded protrusion 7 Inner protrusion 7a Bottom contact part 7b Middle folding part 7c Folded part 7d Notch 8 Open groove 9 Locking part 10 Outer flange part 11 Plug Part 12 Retracting part 21 Bracket 22 Receiving seat 22a Fixing member 23 Mounting seat W Wall surface

Claims (4)

An elastic covering material (1) having an opening (5) in which the grip portion (4) is tubular and extending in the length direction, and a core material (8) having an opening groove (8) extending in the length direction at the bottom. In the cap tree of the handrail formed by covering 2) and engaging the folded ridges (6) on both sides of the grip portion (4) with the locking portions (9) on both sides of the core material (2).
The covering material (1) is provided with a thin inner projecting piece (7) protruding inward from both sides of the grip portion (4) so as to face the opening (5).
An inner protrusion (7) of the covering material (1) is placed along the portions facing both sides of the opening groove (8) of the core material (2), and the core is passed through the opening (5) of the covering material (1). Pushing the groove filling material (3) of the elastic body into the open groove (8) of the material (2), and sandwiching the inner protrusion (7) between the bottom of the core material (2) and the groove filling material (3). The fixing structure of the covering material in the cap tree of the handrail, which is characterized by fixing the covering material (1) to the core material (2). The inner protrusion (7) of the covering material (1) has a bottom contact portion (7a) and a middle fold portion (7b) sequentially connected from both side ends of the grip portion (4) toward the opening (5). age,
A state in which the bottom portion (7a) and the middle fold portion (7b) of the inner protrusion piece (7) are bent along the corners of the bottom surface and the inner side surface facing the open groove (8) of the core material (2), respectively. The fixing structure of the covering material in the cap tree of the handrail according to claim 1, wherein the inner projecting piece (7) is sandwiched between the core material (2) and the groove filling material (3). The inner projecting piece (7) of the covering material (1) is a series of folded portions (7c) from both end ends of the grip portion (4) via a bottom contact portion (7a) and a middle folding portion (7b). age,
The folded portion (7c) of the inner projecting piece (7) is folded back from the middle folded portion (7b) along the retaining portion (12) of the groove filling material (3) inside the core material (2). The fixing structure of the covering material in the cap tree of the handrail according to claim 2, wherein the inner projecting piece (7) is sandwiched between the core material (2) and the groove filling material (3). One of claims 1 to 3, wherein the inner projecting piece (7) of the covering material (1) is provided with a notch (7d) for avoiding a receiving seat of the bracket. Fixed structure of the covering material in the cap tree of the handrail described in.

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