JPH0628640Y2 - Ladder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a ladder.

(Prior Art) When building or repairing a house or installing a structure on the roof, a ladder is often leaned against the eaves.
However, since there is a rain gutter at the eaves end, if the ladder is simply leaned against, the rain gutter may be damaged or deformed due to the weight of the ladder and the weight of the operator.

Therefore, the applicant of the present invention has provided a ladder in which a wide rain gutter protection table is attached to the tip of a support arm extending from the upper end described in Japanese Utility Model Laid-Open No. 59-60300 (hereinafter , Referred to as the first conventional example).

In addition, a pair of hanging metal fittings main body which is clamped and held by sandwiching the outer eaves tip portion of the nose cover disclosed in Japanese Utility Model Publication No. 58-174598, and a ladder installed between the hanging fitting main bodies. There has been proposed a ladder hanging metal fitting which is characterized in that it comprises a supporting rod adapted to be hung (hereinafter referred to as a second conventional example).

Further, two or more ladder split bodies described in Japanese Utility Model Laid-Open No. 58-130598 are elastically connected to each other, and one of the split bodies has an arm portion axially attached to the corner of the outer wall of the house and the eaves back portion. At the same time, it is a ladder provided with an auxiliary arm portion for fixing the arm portion in a thrusting posture, and a slip preventing portion made of a flexible material is formed at the tip of the arm portion, and the split body and the arm portion are formed. A ladder for narrow ground, in which an auxiliary arm portion is installed, has been proposed (hereinafter referred to as a third conventional example). (Problems to be solved by the invention) However, in the case of the first conventional example, when the ladder with a rain gutter protection stand is leaned against an uneven roof such as a corrugated roof or a corrugated roof, Since the substrate of the gutter protection table is a single flat plate having a wide width, the gutter protection table is not stably placed on the roof, which is very dangerous in performing the work, and there is a problem that it cannot be used. If the board is wide, a load is intensively applied to the protrusion of the roof, which may damage the protrusion.

In addition, in the case of the second conventional example, the hanging metal fitting must be sandwiched between the eaves, and this sandwiching work is difficult.
Some roofs do not have a structure in which the eaves can be sandwiched, and there was a problem in terms of versatility.

Further, in the case of the third conventional example, the arm portion is supported by the eaves back part, and there is a case where the distance from the eaves to the eaves back part is long depending on the roof, which also has a problem in versatility. .

(Means for Solving the Problems) In the ladder of the present invention, the ladder main body is composed of two side frames and a plurality of cross rails connecting the both side frames, and both side frames at the upper end of the ladder main body. From the above, support arms are projected in the same direction, respectively, and a support stand that is slightly elongated along the flow direction of the roof and is rotatable in the flow direction of the roof is independently attached to the tip of each support arm, An eaves tip locking piece is provided so as to project downward at the lower ends of both support bases.

(Operation) The support bases provided on the both side frames at the upper end of the ladder via the support arms are independently arranged at predetermined intervals, and are formed to be slightly elongated along the roof flow direction. It is made rotatable in the flow direction of the roof, and by placing these support bases on the roof,
The support is stably placed even on the eaves with uneven roofs. Also, these supports allow the ladder to be leaned against the eaves without contacting the rain gutter.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The figure shows the ladder of the present invention leaning against the eaves of the roof.

In the figure, 1 is a ladder main body, and this ladder main body 1
Is composed of side frames 2a and 2b, and hollow horizontal rails 3 that connect the side frames 2a and 2b at a plurality of positions.

At the upper end of the ladder body 1, support arms 4 and 4 are extended from the both side frames 2a and 2b in the same direction, and independent support bases 5 are provided at the tips of the support arms 4 and 4, respectively.
5 are rotatably attached.

The support arms 4 and 4 and the support bases 5 and 5 are provided symmetrically on both side frames 2a and 2b at the upper end of the ladder body 1, and hereinafter, the support arm 4 and the support provided on one side frame 2a. The table 5 will be described.

The support arm 4 is composed of two arm bodies 4a and 4b. The two arm bodies 4a and 4b each have a side frame 2a whose base end portion is one.
Are fixed to the arm 4 at a predetermined distance, and
The tips of a and 4b are connected to each other. These arms 4
The lengths of a and 4b are the same as those of the support base 5 attached to this tip portion.
The ladder body 1 does not come into contact with the rain gutter 10 provided at the eaves when the is placed on the eaves. In this example, the support arm 4 is composed of two arms 4a and 4b, but it may be, for example, one arm, and the number thereof is not limited.

The support base 5 is placed on the roof when the ladder main body 1 is leaned against the roof so that the upper portion of the ladder main body 1 does not come into contact with the rain gutter 10 provided at the eaves of the ladder main body 1. It supports the upper end portion, and is attached to the tip end portion of the support arm 4 rotatably in the roof flow direction as described above. A locking piece 8 projecting downward is provided at one end of the support base 5 on the side of the ladder body 1, and the locking piece 8 is locked to the eaves to stabilize the support base 5 on the roof. It is designed to be placed on the screen. On the lower surface of this support base 5,
A cushioning material (not shown) such as a sponge material or a rubber material is provided so as to prevent the roof material from being damaged by an impact when the support base 5 is placed on the roof. Support stand 5
Is attached to the tip of the support arm 4 so as to be rotatable in the flow direction of the roof, so that it can be stably placed on the roof according to the slope of the roof. Further, the support base 5 is formed to be elongated along the direction of water flow on the roof.

As described above, both side frames 2a at the upper end of the ladder main body 1,
The two support bases 5 and 5 provided on the 2b via the support arm 4 are arranged at a predetermined distance from each other, and this space is such that when the support bases 5 and 5 are placed on an uneven roof such as a roof tile. It can be set at any time by taking into consideration the width of the ladder body 1 and the like so as to be placed at a stable position in the concave portion of the roof. Therefore, even if this ladder is leaned against an uneven roof such as a roof tile, both supports 5 and 5 are stably placed on the roof, and the upper end of the ladder is supported by the eaves without contacting the rain gutter. .

Further, the arms 4 fixed to the side frames 2a and 2b, respectively.
The base ends of a and 4b are side frames 2a and 2b on which the cross rails 3 are located.
Are located on the outside of each of the bolts 6, 6
Is inserted through the inside of the cross rail 3 from the base end portions of the one arm body 4a, 4b, is inserted through the base end portion of the other arm body 4a, 4b, and is fastened by a nut (not shown). Bodies 4a, 4
The base end of b is fixed. Therefore, the support arm 4 can be firmly fixed to the ladder body 1, and the support arm 4 supporting the support base 5 and the ladder body 1 can be easily attached and detached, which is convenient for carrying.

Further, aluminum is preferable as the material of the support arm 4 and the support base 5, which makes the support arm 4 and the support base 5 lighter, so that the ladder can be easily leaned and carried.

The ladder body 1 may have a structure that is vertically expandable and contractible.

(Effects of the Invention) As described above, according to the present invention, the support bases that are rotatable in the roof flow direction on both side frames of the ladder via the support arms and that are elongated in the roof flow direction are provided. Are placed independently on the roof at a predetermined interval, so that this support can be stably fitted in the recess even on uneven roofs such as corrugated roofs and corrugated roofs. Placed. Therefore, the ladder with this support can be safely used on any roof.

Further, since the eaves-side engaging pieces project downwardly from the lower ends of both the supports, the ladder can be stably leaned against the eaves-side.

[Brief description of drawings]

The drawing is a partially cutaway perspective view showing a state in which the ladder according to the present invention is used. 1 ... Ladder main body, 2a, 2b ... Side frame 4 ... Support arm, 5 ... Support base 8 ... Locking piece

Claims (1)

[Scope of utility model registration request] 1. A ladder body is composed of two side frames and a plurality of cross rails connecting the both side frames, and support arms project from the both side frames at the upper end of the ladder body in the same direction. A support base that is slightly elongated along the roof flow direction and that is rotatable in the roof flow direction is independently attached to the tip of each support arm, and the eaves locking pieces are attached to the lower ends of both support bases. Ladder characterized in that is projected downward.