JP3120163U - Assembled plastic ladder - Google Patents

Abstract

Provided is an assembly-type synthetic resin ladder in which a side post made of synthetic resin can be easily drilled and a cross rail for a footrest can be easily and reliably connected to both side girders.
A horizontal rail 2 for a footrest is formed into a hollow square shape in cross section, an unevenness of an anti-slip 3 is formed on an upper surface thereof, and one end is inserted into a hollow square end portion of the horizontal rail, and a horizontal beam is formed by a pin 7 or a screw. A joint member 4 formed from a square shape 5 fixed to the side spar and a round bar shape 6 whose other end is inserted into the side spar and fixed to the side spar 1 by a pin or screw is applied. An assembly-type synthetic resin ladder, which is inserted into the circular holes 10 formed in the above-described structure and connected to each other.
[Selection] Figure 2

Description

  The present invention relates to a synthetic resin ladder formed by arranging both side girders and a plurality of leg rails between them.

  Conventionally, as a synthetic resin ladder constructed by arranging both side girders and a plurality of leg rails between them, the mounting holes having the cross-sectional shape of the leg rails drilled from the inner side of the side girders are provided in the horizontal direction. There is one in which an end portion of the crosspiece is inserted and fixed to the side beam with a pin in the side beam (see, for example, Patent Document 1).

Japanese Patent No. 2700618

  By the way, in the above-mentioned known one, when fixing a crosspiece with a square cross section to a side girder, it is necessary to make a square hole in the side girder made of synthetic resin. Unlike the hole, there was a problem that it was very difficult.

  The present invention has been made in view of such problems of the prior art, and the object of the present invention is to facilitate the drilling of side girders made of synthetic resin and to simplify the cross rail for the footrest. -An attempt to provide an assembly-type synthetic resin ladder that can be securely connected to both side girders.

  In order to achieve the above-mentioned object, the assembly type synthetic resin ladder according to the present invention has a horizontal crosspiece for a footrest having a hollow square shape in cross section, an anti-slip unevenness formed on the upper surface, and one end is a hollow square end of the horizontal crosspiece. Applying a joint member molded from a square shape inserted into the section and fixed to the cross beam by a pin or screw and a round bar shape the other end inserted into the side beam and fixed to the side beam by a pin or screw The joint members are inserted into round holes formed on both side girders and connected respectively.

  The assembling-type synthetic resin ladder of the present invention has a crosspiece with a square cross-section with a square cross section, a non-slip irregularity formed on the top surface, and one end inserted into the end of the hollow square shape of the crosspiece with a pin or screw Apply a joint member molded from the square shape fixed to the cross beam by the round bar and the other end inserted into the side beam and fixed to the side beam by pins or screws, and the joint member is applied to both side beams Inserting into the formed round holes and connecting them respectively facilitates the drilling of the side girders and allows the leg rails to be easily and reliably connected to both side girders.

  1 and 2 relate to one embodiment of the present invention, FIG. 1 is a schematic view of an assembly type synthetic resin ladder according to the present invention, and FIG. 2 is an enlarged explanatory view of a part A in FIG.

  In the figure, reference numeral 1 denotes a side bar made of synthetic resin, which is located on both sides of a horizontal rail 2 for footrest, and a plurality of the horizontal rails 2, 2,. Yes. This crosspiece 2 is also made of synthetic resin and has a hollow square cross section, and the entire top surface thereof is uneven to form a slip stopper 3.

  4 is a plastic joint member. The joint member 4 has a round bar shape in which one end is inserted into the hollow square end of the horizontal rail 2 and the other end is inserted into the side beam 1. 6 is molded. A pin mounting hole 8 for fixing the rectangular shape 5 of the joint member 4 to the horizontal rail 2 with a pin 7 is formed in a substantially central portion of the upper surface of the rectangular shape 5. Further, a pin mounting hole 9 for fixing the round bar shape 6 of the joint member 4 to the side beam 1 with a pin 7 is formed at a substantially central portion of the side peripheral surface of the round bar shape 6.

  In order to connect the cross rails 2, 2,... To the both side girders 1, 1 through the joint member 4, round holes 10, 10,. Pin mounting holes 11 for fixing the round bar shape 6 of the joint member 4 with pins 7 are formed at regular intervals from the side surface of 1. Further, pin mounting holes 12 and 12 for fixing the square shape 5 of the joint member 4 with the pins 7 are also formed in the vicinity of both ends of the upper surface of the horizontal rail 2.

  In the assembly type synthetic resin ladder having the above configuration, the holes to be drilled in the side beam 1 at regular intervals are round holes 10, 10,. , 1 can be connected to the horizontal rails 2, 2,... By a pin 7 via a joint member 4 so that a ladder can be easily and reliably assembled.

  In the present embodiment, the pin 7 is used to fix the joint member 4 to the side beam 1 and the cross beam 2. However, it is also possible to fix the joint member 4 by screwing them together.

FIG. 1 is a schematic view of an assembly type synthetic resin ladder according to the present invention. FIG. 2 is an enlarged assembly explanatory view of a part A in FIG.

Explanation of symbols

1 Side Girder 2 Horizontal Cross 3 Non-slip 4 Joint Member 5 Square Shape 6 Round Bar Shape 7 Pin 10 Round Hole

Claims (1)

In a synthetic resin ladder constructed by arranging both side girders and a plurality of leg rails between them, the leg rails have a hollow square shape in cross section, and non-slip irregularities are formed on the upper surface, one end of the leg Molded from a square shape that is inserted into the hollow square end of the beam and fixed to the horizontal beam by a pin or screw, and a round bar shape that is inserted into the side beam and fixed to the side beam by the pin or screw. An assembly-type synthetic resin ladder characterized in that the joint member is applied, and the joint member is inserted into a circular hole formed on both side girders and connected to each other.