JPH09195652A - Synthetic resin made ladder furnished with reflector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin made ladder safe with little risk to go up and down by arranging a reflector in each of cross rail of the ladder and easy to assemble. SOLUTION: This ladder is constituted by arranging both side beams 1 and a plural number of cross rail 2 for foot stepping between the both side beams 1. Additionally, a driving member 4 in the middle of which a ring reflector 3 is fit, one end of which of inserted in a cross rail end part and fixed on the cross rail 2 and the other end of which is inserted into the side beam 1 and fixed on the side beam 1 by a pin 10 is used. The driving member 4 is respectively connected to the both side beam 1, and the aforementioned reflector 3 is interposed between an end surface of the cross rail 2 and a inner surface of the side beam 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder made of synthetic resin having both side girders and a plurality of cross rails for footrests arranged therebetween.

[0002]

2. Description of the Related Art In a conventional ladder, a ladder is simply constructed by connecting both side girders and a space therebetween by a plurality of foot rails.

[0003]

However, when the ladder is used underground or in a dark place at night, its contour is difficult to determine, and therefore, there is a danger in ascending and descending using the ladder. There is a risk of causing an accident such as falling off the ladder. Further, when moving near the ladder, the existence of the ladder is unclear, and therefore there is a risk of collision with the ladder.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to arrange a reflector on each of the horizontal rails of a ladder to ascend and descend. Another object of the present invention is to provide a synthetic resin ladder which has a low degree of danger and is easy to assemble while being safe.

[0005]

In order to achieve the above object, a synthetic resin ladder provided with a reflector according to the present invention comprises:
Using a driving member in which a ring-shaped reflector is fitted in the middle, one end is inserted into the end of the cross beam and fixed to the cross beam, and the other end is inserted into the side beam and fixed to the side beam by a pin. A driving member is connected to each of the side girders, and the reflector is interposed between the end face of the cross beam and the inner surface of the side girders.

[0006]

FIG. 1 is a partially cutaway front view of a ladder according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
FIG. 3 is an explanatory view for assembling the ladder according to the present invention.

In the figure, reference numeral 1 is a side girder, which is located on both sides of a horizontal rail 2 for footrest, and a plurality of the horizontal rails 2 are arranged between the side rails 1 and 1. The horizontal rail 2 has a circumferential surface having corrugated irregularities to form a non-slip.
The side girders 1 and the cross rails 2 are made of a synthetic resin such as FRP. Reference numeral 3 denotes a ring-shaped reflector.
Is made of polycarbonate, acrylic resin, or other transparent polymer material having an uneven reflecting portion formed on the inner periphery thereof.

Reference numeral 4 denotes a driving member made of a synthetic resin. The driving member 4 includes an intermediate portion 5 into which the ring-shaped reflector 3 is fitted, and a small-diameter portion 6 inserted into an end of the cross bar 2. A large diameter portion 7 is inserted into the side beam 1.
The intermediate portion 5 has a plurality of fixing ribs 8 for the reflector 3 in the axial direction thereof, and the small diameter portion 6 has a plurality of convex rings 9 which are elastically attached to the inner periphery of the horizontal rail 2 in the axial direction thereof. The large-diameter portion 7 is formed with a pin insertion hole 11 for fixing the driving member 4 to the side beam 1 with the pin 10.

At the time of assembling the ladder made of synthetic resin, first, the reflector 3 is fitted into the intermediate portion 5 of each of the driving members 4 and the reflector 3 is fixed to the driving member 4 by the fixing ribs 8. Large-diameter portion 7 of driving member 4 provided with reflector 3
Is inserted into each side spar 1 and fixed to the side spar 1 with the pin 10. Next, one end of the entire horizontal rail 2 is fitted into the small diameter portion 6 of the entire driving member 4 on one side spar 1, and the driving member 4 is integrated with the horizontal rail 2 by a plurality of convex rings 9. Furthermore, by inserting the other end of all the horizontal rails 2 into the small diameter portion 6 of all the driving members 4 on the other side beam 1 side, the driving members 4 are integrated with the horizontal rail 2 by a plurality of convex rings 9, A ladder made of a synthetic resin having a reflector having the reflector 3 interposed between the end face of the cross beam 2 and the inner face of the side beam 1 is constructed.

Since the ladder is constructed as described above, when the ladder is used underground or in a dark place at night, even a small amount of light is reflected on each cross beam 2 of the ladder. Since the light is reflected by the ladder 3, the outline of the entire ladder can be clearly confirmed, and there is no danger of going up and down using the ladder, and there is no danger of causing an accident such as dropping from the ladder. When moving near the ladder, the presence of the ladder can be confirmed, and the ladder rarely hits the ladder.

Further, since the ladder is assembled with the reflector 3 mounted on the driving member 4 in advance, the reflector 3 is very unlikely to be damaged during the assembly. Further, one end of the entire horizontal rail 2 is fitted into the driving member 4 on one side girder 1 side and integrated, and the other end of the entire horizontal rail 2 is fitted into the driving member 4 on the other side girder 1 side. As a result, a synthetic resin ladder including a reflector having the reflector 3 interposed between the end surface of the cross beam 2 and the inner surface of the side beam 1 is configured as a whole, and the assembly is extremely easy.

[0012]

According to the present invention, in a synthetic resin ladder having both side girders and a plurality of cross rails arranged between them, a reflector is provided between the end face of the horizontal jig and the inner surface of the side girders. Since the ladder was used underground or when used in a dark place at night, the outline of the entire ladder can be clearly checked, and there is no danger of climbing up and down using this ladder. Not only is there no risk of an accident such as a fall, but when moving near the ladder, the presence of the ladder can be confirmed, and the synthetic resin ladder has a safe reflector that is less likely to hit the ladder. .

Further, since the ladder is assembled with the reflector already attached to the driving member, the reflector is extremely unlikely to be damaged at the time of assembly, and further, the entire cross rail is attached to the driving member on one side girder side. By inserting one end of the above into the integrated one, and by inserting the other ends of all the horizontal crosspieces into the driving member on the side girder side of the other side, a reflector is provided as a whole between the end surface of the horizontal crosspiece and the inner surface of the side girder. Since the synthetic resin ladder provided with the interposing reflector is constructed, the synthetic resin ladder provided with the reflector is very easy to assemble.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a ladder according to one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view for assembling a ladder according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side girder 2 Side beam 3 Reflector 4 Driving member 10 pin

Claims (1)

[Claims] 1. A synthetic resin ladder comprising a pair of side girders and a plurality of horizontal rails for footrests disposed therebetween, a ring-shaped reflector is fitted in the middle, and one end is inserted into the end of the horizontal rail to form the horizontal rail. Using a driving member fixed to the beam and the other end being inserted into the side beam and fixed to the side beam by the pin, the driving members are connected to both side beams, respectively, and between the end face of the horizontal beam and the inner surface of the side beam. A ladder made of synthetic resin, comprising a reflector, wherein the reflector is interposed.