JPH09100610A - Handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handrail low in cost and excellent in safety by bending both ends of a synthetic wood bar body to form a handrail body, and fixing this handrail body to the wall surface by brackets with skew receiving part. SOLUTION: A synthetic wood bar body 10 is formed by the foaming extrusion molding of polyvinyl chloride or the like, and both end parts of the bar body 10 to the extent of not generating buckling to form a handrail body 10. Both end parts of the handrail body 10 are rigidly fixed to the skew receiving part 21, 21 of brackets 20, 20 by screws 23, 23. The flange parts of the brackets 20, 20 are rigidly fixed to the wall surface of stairs or the like by fixtures such as screws. A handrail excellent in safety as well as with the same sense of touch as natural material can thereby be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a toilet, stairs, bathroom,
The present invention relates to a handrail that is attached to the wall of a corridor or the like, and particularly to a handrail that is suitable for a home for the elderly, etc. that corresponds to a modern longevity society.

[0002]

2. Description of the Related Art Conventional handrails for houses are made of natural wood or brass.
Although made of metal such as aluminum, the handrail made of metal is cold in winter and is not good for the elderly, so warm and natural wood is preferred for the elderly.

In the case of a handrail made of natural wood, as shown in FIG. 10, there are many handrails 3 of the type in which the bottom portion of the main body 1 of a natural wood handrail made of a round bar is fixed to a wall surface by a bracket 2. . In addition, in recent years, many manufacturing techniques of synthetic wood made of foamed plastic have already been known, and it has an appearance and touch similar to natural wood and is excellent in workability, so it is also used for handrails. Is becoming popular. In addition, the thickness of the handrail is suitable to be 28 to 40 mm in diameter in consideration of the strength and the ease of gripping, and the distance between the wall surface and the handrail is set to 30 to 50 mm according to the certification standard of Better Living Foundation. ing.

However, in the handrail 3 made of natural wood shown in FIG. 10, particularly when used by an elderly person, a finger is caught on the bracket 2 that receives the handrail main body 1 to cause an unexpected injury such as a broken finger. There was also an accident in which the sleeve was taken off by the end portion protruding to the outside of the bracket 2 and the bicycle fell over.

To avoid these dangers, FIG.
As shown in FIG. 3, by bending the end of the handrail main body 4 into a circle and connecting it to a metal bracket 5 having a receiving portion perpendicular to the support wall surface, a finger may be caught on the bracket 5.
There is also known a handrail 6 which is devised so as to avoid the protrusion of the end portion. However, when the handrail main body 4 is made of natural wood, the above-described bending process is difficult or expensive, and when it is made of a plastic rod such as synthetic wood, it can be bent by heat. If the end of the sliding main body 4 is bent at a too steep angle, the buckling 4a will occur and the smoothness of the inner surface will be lost, and if the bending process is such that buckling does not occur, the gap between the wall surface is wide. It was too small to satisfy the above dimensions.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the above-mentioned conventional handrails, and it is an object of the present invention to solve the problems.
It is an object of the present invention to provide a handrail that is excellent in safety and can be used by elderly people without anxiety.

[0007]

As a result of intensive studies to solve the above-mentioned conventional problems, the present inventor has found that both ends of the handrail body made of a synthetic wood rod-shaped body do not buckle. The present invention has been completed by finding that the handrail intended for the above purpose can be obtained by working and processing the brackets attached to both ends of the handrail main body to have a specific shape.

That is, the handrail of the present invention comprises a handrail main body in which both ends of a synthetic wood rod are bent to such an extent that buckling does not occur, and an oblique receiving port attached to both ends of the handrail main body. It is characterized by comprising a bracket having. It is preferable that the synthetic wood rod is formed by foaming extrusion of polyvinyl chloride. The "synthetic wood" defined in the present invention is a synthetic resin molded product that has an appearance similar to wood, that is, a unique wood grain pattern and gives a wood texture and a weight feeling that can be partially substituted for the use of wood. Say.

In the handrail of the present invention, since the handrail main body is made of a synthetic wood rod, the handrail main body is not colder than the metal handrail main body and has the same feel as natural wood. Since both ends of the handrail are bent so as not to cause buckling, they have a gentle curve, and both ends of the handrail body are attached to a bracket having an inclined receiving port. Since there is a gentle curve between the ends of the straight part of the handrail body and the ends of the brackets, you can hook your finger more than the handrail that bends both ends of the handrail body at a right angle. There is no fear of this, and the safety is more suitable for the elderly.

[0010]

FIG. 1 shows an example of an embodiment of the present invention.
~ It demonstrates in detail with reference to FIG. As shown in FIGS. 1 to 4, the handrail A of the present embodiment is a handrail main body 10 in which both ends of a synthetic wood rod are bent to the extent that buckling does not occur.
And brackets 20 and 20 having oblique receiving ports that are attached to both ends of the handrail main body 10, respectively.

The handrail main body 10 used in the present invention is formed by bending both ends of a synthetic wood rod to the extent that buckling does not occur. As the synthetic wood rod, for example, two kinds of thermoplastic resins such as polyvinyl chloride and polyolefin resin having different degrees of polymerization (summer material material, winter material material) are mixed and foamed and extruded by an extruder. By printing, laminating a synthetic wood rod having a wood grain appearance, a synthetic resin film printed with wood grain, resin impregnated paper, etc. on the surface of a rod molded from a synthetic resin such as styrene resin or ABS resin. For example, a synthetic wood rod-shaped body formed by doing so can be used. The diameter of these synthetic wood rods is
It is preferable that the length is set to 28 to 40 mm and the length is set to 20 to 90 cm in view of the relationship between the strength and the ease of gripping.

These synthetic wood rods have appearances similar to wood, have low water absorption, are dimensionally stable, have no direction in physical properties, and have good decay resistance, which are not found in natural wood. Have. Of the synthetic wood rods, considering the strength, weight, hardness, flame retardancy, durability, industrial economy, etc. required for handrails, synthetic wood made of foamed extrusion of polyvinyl chloride. A rod-shaped body is preferable.

The bending of both ends of the synthetic wood rod is carried out by placing the synthetic wood rod in an oven at 120 ° C. to 140 ° C. for 10 to 60 minutes, then fitting it in a jig having a semi-circular cross section and centering it. The radius of curvature is 60 to 120 mm and the angle is adjusted to 10 to 30 degrees. The bending process varies within the respective setting ranges depending on the type of resin used, the thickness of the rod-shaped body, and the like.

If the heating temperature is less than 120 ° C. and the heating time is less than 10 minutes, it cannot be bent at an angle to achieve the object of the present invention, and the heating temperature is 140 ° C. and the heating time is 60 minutes. If it exceeds the above range, bending of the rod-shaped body is facilitated, but softening of the rod-shaped body proceeds, sagging occurs, and bending work becomes difficult, which is not preferable. Further, if the radius of curvature is less than 60 mm and the angle is less than 10 degrees, it cannot be bent to an angle that achieves the object of the present invention, and if the radius of curvature is 120 mm and the angle exceeds 30 degrees. Buckling occurs, which is not preferable.

At both ends of the handrail main body 10 in which both ends of the synthetic wood rod-like body are bent to the extent that buckling does not occur,
The metal bracket 20 shown in FIGS. 5 and 6 is attached. The bracket 20 includes an inclined tubular receiving port 21 into which the end of the handrail main body 10 is fitted, and the receiving port 2
1 and a flange portion 22 integrally formed around the bottom portion. A contact portion 21a for receiving the end surface of the handrail main body 10 is provided in the receiving opening 21, and the end portion of the handrail main body 10 is fixed to the outer peripheral surface of the receiving opening 21 from both sides with screws 23, 23. Mounting holes 21b, 21b for mounting are provided. Further, the flange portion 22 is also provided with mounting holes 22a, 22a ... For fixing the handrail A to a wall surface such as stairs with a mounting tool such as a screw.

FIGS. 7A, 7B and 8 show another embodiment of the bracket. The bracket 20A of the present embodiment includes an obliquely cylindrical receiving port 21A into which the end of the handrail main body 10 is fitted, and a receiving plate part 24 integrally formed on the bottom of the receiving port 21A. Receiving port 2
In FIG. 1, there is an abutting portion 21 for receiving the end surface of the handrail main body 10.
B is provided, and mounting holes 21C and 21C for fixing the end portions of the handrail main body 10 from both sides with screws are provided on the outer peripheral surface of the receiving port 21A, respectively. Further, the receiving plate portion 24 is provided with mounting holes 24a, 24a ... For fixing the handrail to the wall surface of the stairs or the like with a mounting tool such as a screw. According to the bracket 20A of the present embodiment,
Mounting holes 24a, 24a ...
Since it is located at a position away from, the mounting work of the handrail on the wall surface can be performed more easily than the bracket 20 having the above-described flange portion 22.

As described above, the handrail A according to the present embodiment is formed by bending both ends of the synthetic wood rod to such an extent that buckling does not occur, and then the distance from the wall to the handrail main body is a predetermined dimension ( It is completed by cutting the end portion so as to be 30 to 50 mm) and attaching the bracket 20 having the above structure to this end portion. Then, the handrail A is used by being fixed to the wall surface 31 of the stairs 30 with a fixture such as a screw, as shown in FIG. 9.

The handrail of the present invention is constructed and used as described above, but is not limited to the above-mentioned embodiment. The handrail of the present invention comprises a handrail main body in which both ends of a synthetic wood rod are bent to the extent that buckling does not occur, and a bracket having oblique receiving ports attached to both ends of the handrail main body. Therefore, the resin, additives and the like used for the synthetic wood rod-shaped body, the molding method and the molding apparatus thereof are not limited in any way. In addition, in the above-described embodiment, the brackets 20 attached to both ends of the handrail main body 10 are attached with the screws 23, but they may be fixed with an adhesive or a combination of the screws 23 and an adhesive may be used. Also, fixing with an adhesive or a combination of a fixture such as a screw and an adhesive may be used. Furthermore, when the handrail main body 10 is made long (60 cm or more), the handrail main body 10
It is also possible to reinforce the handrail main body 10 by embedding an insert member such as a thin metal rod or natural wood in a straight line portion inside when molding. In the above embodiment,
Although the bracket 20 is made of metal, it may be made of synthetic resin.

[0019]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

Example 1 (manufacturing the handrail main body by foaming extrusion molding of polyvinyl chloride) Summer material material (compound) Weight (kg) Polyvinyl chloride (polymerization degree 700 to 1000) 100 Acrylic resin modifier 6 DOP 3 Calcium carbonate 20 Lead-based composite stabilizer 4.3 Calcium-based stabilizer 0.5 Foaming agent 0.32 Pigment (cream color) Appropriate amount

Material for winter material (compound) Weight (kg) Polyvinyl chloride (Polymerization degree 700 to 1300) 100 Acrylic resin modifier 6 DOP 3 Calcium carbonate 20 Lead compound stabilizer 4.3 Calcium stabilizer 0 .5 Foaming agent 0.32 Pigment (Brown) Suitable amount

Extruder conditions, etc. The extruder has a ring member arranged under the following conditions between the tip of the screw and the extrusion die without using the screen and breaker plate normally used in the extruder. It was used. Other extruder conditions are as follows. Screw length (L): 1438 mm Screw diameter (D): 65 mm L / D = 22 Cylinder hopper side set temperature: 123 ° C ± 3 ° C Center temperature of cylinder: 133 ° C ± 3 ° C Cylinder tip Side set temperature: 147 ° C ± 3 ° C Cylinder side set temperature of die: 147 ° C ± 1 ° C Center set temperature of die: 167 ° C ± 1 ° C Set temperature of die exit: 181 ° C ± 1 ° C Screw rotation speed : 20 rpm Ring member: Cross-shaped (A circular half of an inner diameter of about 40 mm of a metal disk having an outer diameter of 55 mm, and four fan-shaped through holes were formed by dividing the circle half into a cross-shaped plate band of about 3 mm width. Ring member) Rated current: 48A

The summer wood material and the winter wood material were formed into pellets each having a diameter of about 3 mm by a pelletizer, and the pellets of each wood portion were mixed at a polymerization ratio of 9: 1 and fed to an extruder from a hopper. . The coarsely kneaded molten resin material pushed from the 65 mm cylinder is extruded from a die opening of about 24 mm, and the cylindrical body of about 35 mm diameter foamed at the die opening is cooled by sizing to a diameter of about 35 mm. A rod-shaped body was formed and cut into a piece having a length of 100 cm. The obtained synthetic wood rod-shaped body had a specific gravity of about 0.85, the surface thereof had a light-colored and light wood pattern as a whole, and the cut had four annual rings. The wood grain pattern formed by the winter wood portion was continuously formed from the surface to the inside, and had a good appearance substantially similar to actual wood.

Both ends of the synthetic wood rod having a diameter of about 35 mm were placed in an oven at 130 ° C., heated for 10 minutes, and then fitted in a jig having a semicircular cross section to have a centerline radius of curvature of 100 mm and an angle of 21 °. Bending was performed as described above, and the end face was cut so as to be parallel to the wall surface. In addition, a metal bracket 2 having a receptacle inclined by 20 ° from the vertical shown in FIGS.
0 was fixed and attached to the wall surface 31 of the stairs 30 as shown in FIG. The distance between the wall surface and the handrail was 47.5 mm.

Since the handrail of the first embodiment is formed by integrally molding the main body of the handrail by foaming extrusion of polyvinyl chloride, compared with a synthetic wood rod formed by printing or laminating on the surface of the rod, The molding efficiency is remarkably good. It should be noted that synthetic wood rods having various wood grain patterns can be produced by selecting additives such as pigments to be added to summer materials and winter materials and selecting extrusion processing conditions.

Example 2 (manufacturing handrail body by polystyrene foam extrusion molding) Two extruders having a diameter of 35 mm / 50 mm were connected to each other, and 100 parts of polystyrene, 1.5 parts of fine talc powder, and 0.1 part of brown pigment were used. The mixture was fed and 1.5 parts of a foaming agent (CFC) was injected in the middle of a 40 mm extruder while extruding at a barrel temperature of 190 to 220 ° C. The extrusion rate is 15 kg / h, the die has a diameter of 1.6 mm, and the holes with a land length of 10 mm are arranged in 17 rows and 4 rows at 2 mm intervals.
The total pore area was 1.92 cm ² , and the die temperature was 150 to 160 ° C. At the outlet of the die, there is a frame (Teflon coating, 60 ° C on the inner surface) with a divergence taper of 6 ° in length and 20 ° in width, and the resin foam bundle is joined and integrated while passing through it, and the surface Hardened and became dense. The foamed rod molded article has a bulk density of 0.85 and a surface hardness (Shore D hardness) of 6
It was 0. Wood-grain printing was applied to the foamed rod-shaped molded product to obtain synthetic wood. Thereafter, a bracket was attached in the same manner as in Example 1 to manufacture a handrail, and the handrail was attached to the wall surface of the toilet with an attachment made of screws.

[0027]

According to the handrail of the first aspect of the present invention, there is provided a handrail which has the same tactile sensation as a natural material, is excellent in safety, and can be used by elderly people without anxiety. According to the handrail of claim 2, since the synthetic wood rod-shaped body forming the handrail main body is easily integrally molded by one step of foaming extrusion of polyvinyl chloride, the molding efficiency is good and the cost is low. It can be manufactured.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a handrail according to the present invention.

FIG. 2 is a sectional view taken along line I-I of FIG.

FIG. 3 is a plan view showing an embodiment of a handrail of the present invention.

4 is a sectional view taken along the line II-II in FIG.

FIG. 5 is an enlarged plan view of a bracket used in the present invention.

FIG. 6 is an enlarged front view of the bracket used in the present invention.

7A and 7B show another example of the bracket used in the present invention, in which FIG. 7A is a plan view and FIG. 7B is a side view.

FIG. 8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a perspective view showing a use state of the handrail of the present invention.

FIG. 10 is a front view showing an example of a conventional handrail.

FIG. 11 is a front view showing another example of a conventional handrail.

[Explanation of symbols]

 A handrail 10 handrail body 20 bracket 21 socket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 591200450 2-5-12 Iwamoto-cho, Chiyoda-ku, Tokyo Nissho Co., Ltd. (72) Inventor ▲ Satoshi Takahashi 1-3 Kamitani Minami, Kanazawa-ku, Yokohama-shi, Kanagawa No. D-415 Echo Chemical Co., Ltd.

Claims (2)

[Claims] 1. A handrail main body in which both ends of a synthetic wood rod are bent to such an extent that buckling does not occur, and a bracket having oblique receiving ports attached to both ends of the handrail main body. Handrail featuring. 2. The handrail according to claim 1, wherein the synthetic wood rod is formed by foaming extrusion of polyvinyl chloride.