JPS6324799Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a step fitting that is attached to the outer periphery of a utility pole.

[Prior art and its problems] Step metal fittings attached to the outer periphery of utility poles for lifting and lowering work on poles include rod-shaped ones and ones made of press-formed plates. Since the installation structure is fixed to the utility pole with a stopper, etc., the step metal fittings protrude from the outside of the utility pole, resulting in an unsightly appearance, which is a problem in creating scenic urban areas.

[Purpose of invention]

Therefore, this idea was developed to ensure that when workers on the pole are going up and down,
The step arm, which supports the feet, can be folded along the outer periphery of the pole to maintain a clean appearance, and when climbing up and down the pole, the step arm can be folded along the outer circumference of the pole. The purpose is to ensure that the pole is stopped in a horizontal position extending from the outer periphery of the pole.

[Structure of the idea]

In order to achieve the above object, this invention consists of a mounting frame body with a pair of side plates provided on both sides of the mounting board, and a step arm that can be fitted between the side plates of the mounting frame body. A pin is inserted into the guide hole formed at the rear end, and both ends of the pin are supported by the lower part of the side plate of the mounting frame, and the step arm is held perpendicular to the mounting board in the guide hole. In this case, the step arm is L-shaped with a long horizontal hole provided at the lower end of the vertically long hole toward the tip of the step arm, and the pin is engaged with the end of the horizontal hole while the step arm is aligned with the mounting board. In this case, the dimension between the pin and the bottom end of the step arm is longer than the dimension between the pin and the inner surface of the mounting board, and when the step arm is held perpendicular to the mounting board, a vertical hole is inserted into the upper corner of the rear end of the step arm. An arcuate portion is provided centered at the intersection of the step arm is provided with an engaging piece that fits between the projecting piece and the mounting board when the pin is engaged with the end of the vertical hole of the step arm that is perpendicular to the mounting frame. It was structured as follows.

[Effect]

With the above configuration, when the step arm is moved downward along the mounting board of the mounting frame, the pin engages with the end of the horizontally long hole, so the step arm can be moved along the mounting board. It can be held in line.

Also, if you pull up the step arm from the above state, position the pin at the intersection of the horizontally long hole and the vertically long hole, rotate the step arm 90 degrees, and then move the step arm downward, the pin will be vertically Since the engaging piece engages with the end of the hole and fits between the projecting piece and the mounting board, the step arm can be held perpendicular to the mounting board.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in the figure, the step fitting according to the present invention consists of a combination of a mounting frame 1 that is attached to the outer periphery of a telephone pole and a step arm 10 that is connected to this mounting frame 1.

The mounting frame 1 has side plates 3 on both sides of the mounting board 2.
A mounting hole 4 is provided in the upper part of the mounting board 2.

On the other hand, the step arm 10 has flanges 12 formed on both sides of a web 11, and a finger hook 13 provided at the tip of the web 11. A guide hole 14 is provided at the end of the flange 12 of this step arm 10.
is formed, and the pin 2 inserted into this guide hole 14
Both ends of 0 are supported by the ends of the side plates 3 of the mounting frame 1.

Further, the end portion of the flange 12 that reaches the web 11 becomes an arcuate portion 15, and a straight portion 16 is formed continuously at the end of the arcuate portion 15.

The guide hole 14 has an L-shape in which a vertically long hole 18 is formed at the end of a horizontally long hole 17 extending in the length direction of the step arm 10.
The corner portion where the two intersect is located at the center of the arcuate portion 15.

Now, by positioning the pin 20 at the corner of the guide hole 14, the step arm 10 can be swung around the pin 20, and the step arm 10 can be moved approximately 90 degrees in one direction from the position overlapping the mounting board 2. When the step arm 10 is rotated by .degree., the straight edge portion 16 of the step arm 10 comes into contact with the inner surface of the mounting board 2, and is prevented from rotating downward.

A projecting piece 5 is formed inwardly at the lower edge of the side plate 3 of the mounting frame 1, and an engaging piece 19 that can engage with the projecting piece 5 is provided on the step arm 10. This engagement piece 19 engages with the projection piece 5 of the mounting frame 1 when the pin 20 is positioned at the end of the longitudinal hole 18 of the guide hole 14, and this engagement causes the step arm 10 to rise. It is prevented from swinging in the direction.

The step fitting according to this invention has the above-mentioned structure, and is attached to the outer periphery of a utility pole with the mounting hole 4 facing upward.
The step arm 10 is swung to a state perpendicular to the mounting board 2, and is normally housed entirely between the opposing side plates 3 of the mounting frame 1.

When the step arm 10 is accommodated between the side plates 3 of the mounting frame 1, the pin 20 engages with the end of the horizontally elongated hole 17. At this time, since the dimension between the pin 20 and the lower end of the step arm 10 is longer than the dimension between the pin 20 and the inner surface of the mounting board 2 of the mounting frame 1, the step arm 10 cannot rotate around the pin 20. It is held in a state along the inner surface of the mounting board 2.

In this state, when you put your finger on the finger hook 13 of the step arm 10 and pull it up, the horizontally long hole 17
The pin 20 faces the corner where the vertical hole 18 and the step arm 10 intersect, allowing the step arm 10 to swing. Therefore, if the step arm 10 is swung downward to be perpendicular to the mounting board 2, the step arm 10
The straight portion 16 of the step arm 10 contacts the inner surface of the mounting board 2, and the step arm 10 is held in a horizontal position, and cannot be rotated further downward. Next, when the horizontal step arm 10 is moved downward, the straight portion 16 moves along the inner surface of the mounting board 2, the pin 20 faces the end of the vertical hole 18, and the engagement piece 19 The step arm 10 is held in a horizontal state by this engagement and the engagement in which the linear portion 16 abuts against the inner surface of the mounting board 2, and the step arm 1 is
You can put your foot on 0.

If the step arm 10 is pulled up from the state shown in FIG. 3 and rotated upward, the entire step arm 10 can be stored between the side plates 3 of the mounting frame 1. By lowering it, the pin 20 engages with the end of the horizontally elongated hole 17, as shown in FIG. 2, and the step arm 10 is held along the inner surface of the mounting board 2.

〔effect〕

As described above, in this invention, the entire step arm can be housed between the opposing side plates of the mounting frame, so the appearance of the utility pole can be maintained in a clean and neat appearance.

In addition, the step arm can be held in a horizontal position by a simple operation of pulling up the step arm, swinging it downward, and moving the step arm downward while the step arm is in a horizontal position. If these operations can be performed with one hand, and the step arm is oriented horizontally, the end of the arm will come into contact with the inner surface of the mounting board, and the engaging piece will engage with the protruding piece. The step arm does not rotate even when kicked up, and the step arm can be reliably held in a horizontal position, making it extremely safe.

Furthermore, if the step arm is stacked on the mounting frame and the end of the horizontally long hole touches the pin, the center of the arc-shaped part provided at the end of the step arm will be eccentric to the pin, so the step arm will not fit into the mounting frame. They can be reliably held in an overlapping state.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a step metal fitting according to this invention, FIG. 2 is a partially cutaway side view of the same, and FIG. 3 is a partially cutaway side view of the step arm of the same with the step arm facing sideways. DESCRIPTION OF SYMBOLS 1...Mounting frame body, 2...Mounting board, 3...Side plate, 5...Protrusion piece, 10...Step arm, 14
... Guide hole, 15 ... Arc-shaped part, 17 ... Horizontally long hole, 18 ... Vertical hole, 19 ... Engagement piece, 20 ...
pin.

Claims (1)

[Scope of utility model registration request] It consists of a mounting frame with a pair of side plates on both sides of the mounting board, and a step arm that can fit between the side plates of the mounting frame, and a pin is inserted into a guide hole formed at the rear end of the step arm. Then, both ends of the pin are supported at the lower part of the side plate of the mounting frame, and the guide hole is connected to the lower end of the vertically long hole when the step arm is held perpendicular to the mounting board. The step arm is L-shaped with a long horizontal hole toward the tip of the step arm, and when the step arm is aligned with the mounting board and the pin engages the end of the horizontal hole, the dimension between the pin and the bottom end of the step arm is measured. When the step arm is held perpendicularly to the mounting board, the step arm has an arc-shaped portion centered at the intersection of the vertically long hole and the horizontally long hole at the upper corner of the rear end of the step arm. An inward protruding piece is provided on the lower edge of the side plate of the mounting frame body with a required distance between it and the inner surface of the mounting board, and the step arm is provided with a protrusion that faces perpendicularly to the mounting frame body. A step fitting for a utility pole, which is provided with an engaging piece that fits between the projecting piece and the mounting board when the pin is engaged with the end of the vertically long hole of the step arm.