JPH0519387Y2

JPH0519387Y2 -

Info

Publication number: JPH0519387Y2
Application number: JP1986047639U
Authority: JP
Priority date: 1986-03-31
Filing date: 1986-03-31
Publication date: 1993-05-21
Anticipated expiration: 2001-03-31
Also published as: JPS6226456U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は、マンホール内壁に取付けられる昇降
用足掛具の形状に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to the shape of a footrest for climbing up and down that is attached to the inner wall of a manhole.

（従来の技術）従来マンホール１に取付けられる足掛具２は第
２図に示すように、マンホール１の壁に埋設され
る互に平行な２本の脚３と、２本の脚３を連結す
る棒状の足踏部４とからなる、コ字状を形成する
ものが一般に用いられ、これをマンホール壁５に
上下方向に、一定間隔で一列に取付けて使用され
ている。(Prior Art) As shown in FIG. 2, the footrest 2 conventionally attached to the manhole 1 connects two mutually parallel legs 3 embedded in the wall of the manhole 1. Generally, a U-shaped device consisting of a rod-shaped foot section 4 is used, and is attached to the manhole wall 5 in a row at regular intervals in the vertical direction.

（考案が解決しようとする問題点）しかしてこのような足掛具２は、マンホール昇
降時の安全を考えると、足踏部４の長さＬはでき
るだけ長い方が好ましい。しかしコ字状の足掛具
では、足踏部の長さＬを長くすると、２本の脚
３，３の間隔ｌも当然長くなる。しかしそのよう
にすると、所定の位置に足掛具取付用孔６を有す
る規格製品のマンホール壁体５に取付けることが
できなくなる。また、間隔ｌの長い取付用孔を作
つたとしても、マンホール壁５と脚３の取付角度
θが小さくなり、取付孔が作り難くなる。本考案
は足踏部４の長さを長くとつても、規格製品のマ
ンホール壁５に取付けうるような足掛具を得るた
めになされたものである。(Problems to be Solved by the Invention) However, in consideration of safety when going up and down the manhole, it is preferable that the length L of the foothold part 4 of the lever 2 is as long as possible. However, in the case of a U-shaped footrest, if the length L of the foothold is increased, the distance l between the two legs 3, 3 will also naturally become longer. However, if this is done, it will no longer be possible to attach the manhole wall 5 to the standard product manhole wall 5 which has the footrest attachment hole 6 at a predetermined position. Further, even if mounting holes with a long interval 1 are made, the mounting angle θ between the manhole wall 5 and the leg 3 becomes small, making it difficult to make the mounting holes. The present invention was made in order to obtain a footrest that can be attached to a manhole wall 5 of a standard product even though the length of the footstep portion 4 is increased.

（問題点を解決するための手段）上記の問題点を解決するため、本考案の手段
は、マンホールの内壁に取付けられる互いに平行
な２本の脚取付部と、該２本の脚取付部の先端に
連接されて互いに離反する側に折曲し延伸する脚
と、該２本の脚の先端間に連結された直線状の足
踏部とからなることを特徴とするものである。(Means for Solving the Problems) In order to solve the above problems, the means of the present invention includes two leg mounting portions that are parallel to each other and are attached to the inner wall of the manhole; It is characterized by consisting of legs that are connected to their tips and bent and extended toward sides that are separated from each other, and a linear foot section that is connected between the tips of the two legs.

２本の脚取付部間の間隔は、規格製品のマンホ
ール壁体の取付孔間の離間寸法に応じて設定す
る。この脚取付部の先端に連接した脚は、一対の
脚取付部の外側に適当な角度で曲がるように構成
する。 The distance between the two leg attachment parts is set according to the distance between the mounting holes of the manhole wall of the standard product. The legs connected to the ends of the leg attachment parts are configured to bend at an appropriate angle to the outside of the pair of leg attachment parts.

２本の脚に連接された足踏部は、足場としての
機能に加えて昇降時における把握部ともなる。こ
のため脚を略Ｌ字形とし、該脚と足踏部の両端と
で形成されるコーナ部内側に手指が入り足踏部の
両端をグリツプできるように設計するものであ
る。 The foot treads connected to the two legs not only function as a foothold, but also serve as a grasping section when going up and down. For this purpose, the legs are designed to be approximately L-shaped so that the fingers can fit inside the corners formed by the legs and both ends of the foothold and grip both ends of the foothold.

（作用）以上のように本考案では、２本の脚取付部の先
端に連接した脚の間に直線状の足踏部を設けてい
るので、２本の脚取付部間の間隔とは無関係に足
踏部の長さを決定することができる。(Function) As described above, in this invention, since the linear foot section is provided between the legs connected to the tips of the two leg attachment sections, the distance between the two leg attachment sections is irrelevant. The length of the foot tread can be determined.

したがつて、２本の脚取付部間の間隔は、所定
値に設定したまま足踏部を長くして、マンホール
の昇降安全性を高めることができる。 Therefore, the distance between the two leg attachment parts can be set to a predetermined value, and the foothold part can be made longer, thereby increasing the safety in going up and down the manhole.

（実施例）以下、本考案の実施例を図面に基づいて説明す
る。(Example) Hereinafter, an example of the present invention will be described based on the drawings.

第１図は本考案の一実施例を示すもので、足掛
具１１は、互いに平行な２本の脚取付部１４，１
４を有し、該２本の脚取付部１４，１４の先端に
は互いに離反する側に折曲し延伸する脚１２，１
２が連接して形成され、該２本の脚１２，１２の
先端間には直線状の足踏部１５が連接されてい
る。 FIG. 1 shows an embodiment of the present invention, in which a footrest 11 has two leg attachment parts 14, 1 parallel to each other.
4, and at the tips of the two leg attachment parts 14, 14 there are legs 12, 1 which are bent and extended away from each other.
2 are connected to each other, and a linear foot section 15 is connected between the tips of the two legs 12, 12.

以上の構成において、脚取付部１４，１４に連
接した脚１２，１２が互いに離反するように延
び、該２本の脚１２，１２の先端間に直線状の足
踏部１５が連接されているため、脚取付部１４，
１４の間隔ｌを一定としたまま直線状の足踏部１
５の長さを増大させることができる。 In the above configuration, the legs 12, 12 connected to the leg attachment parts 14, 14 extend away from each other, and the linear foot part 15 is connected between the tips of the two legs 12, 12. Therefore, the leg attachment part 14,
14 while keeping the interval l constant.
The length of 5 can be increased.

このようにすることにより、２本の脚取付部１
４，１４間の間隔ｌは、規格製品のマンホール壁
体の取付孔間の離間寸法に応じ設定されるので、
本考案の足掛具は、規格製品であるマンホール壁
体の一対の孔にその脚取付部を容易に取り付ける
ことができる。 By doing this, the two leg attachment parts 1
The distance l between 4 and 14 is set according to the distance between the mounting holes of the manhole wall of the standard product, so
The footrest of the present invention allows the leg attachment portion to be easily attached to a pair of holes in a manhole wall, which is a standard product.

しかも、足踏部１５の長さＬは相当な長さとな
り、足掛具の昇降安全性が高められる。 Moreover, the length L of the foothold part 15 is considerably long, and the safety of raising and lowering the footrest is improved.

（考案の効果）本考案は以上のような構成と作用を有するの
で、足踏部の長さを十分な長さとして、昇降安全
性を確保しながら、規格製品の足掛具取付孔を有
するマンホールに取付けることができる、マンホ
ール用足掛具が得られる。(Effects of the invention) Since the invention has the above-mentioned structure and function, the length of the footrest is made sufficient to ensure safety when ascending and descending, and it also has the foothold attachment hole of a standard product. A footrest for a manhole that can be attached to a manhole is obtained.

また、足踏部を直線状の足踏部としたので、製
造し易く、特に平らな内壁のマンホルの場合、足
踏部のマンホール内のスペースを最小にすること
ができ、したがつてその分だけマンホール内の有
効スペースを大きく確保することができる。 In addition, since the foot part is a straight foot part, it is easy to manufacture, and especially in the case of a manhole with a flat inner wall, the space within the manhole for the foot part can be minimized, so Therefore, a large amount of effective space can be secured inside the manhole.

[Brief explanation of drawings]

第１図は本考案の足掛具の平面図、第２図は従
来の足掛具の平面図である。１０……マンホール、１１……足掛具、１２…
…脚、１３……マンホール壁、１４……脚取付
部、１５……足踏部。 FIG. 1 is a plan view of the footrest of the present invention, and FIG. 2 is a plan view of a conventional footrest. 10...manhole, 11...footrest, 12...
...leg, 13...manhole wall, 14...leg attachment part, 15...footstep part.

Claims

[Scope of utility model registration request]

Two leg attachment parts parallel to each other that are attached to the inner wall of the manhole, legs that are connected to the tips of the two leg attachment parts and bent and extended away from each other, and the tips of the two legs. A footrest for a manhole characterized by comprising a linear foothold connected between the legs.