JPH0326876Y2 - - Google Patents
Info
- Publication number
- JPH0326876Y2 JPH0326876Y2 JP1984163515U JP16351584U JPH0326876Y2 JP H0326876 Y2 JPH0326876 Y2 JP H0326876Y2 JP 1984163515 U JP1984163515 U JP 1984163515U JP 16351584 U JP16351584 U JP 16351584U JP H0326876 Y2 JPH0326876 Y2 JP H0326876Y2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- side plate
- locking
- guide box
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Ladders (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は建築、果樹園その他の作業において用
いられる三脚脚立に関するものである。[Detailed description of the invention] [Field of industrial application] The present invention relates to a tripod pedestal used in construction, orchards, and other works.
従来三脚脚立は起伏の激しい地面や傾斜地での
使用においては必ずしも安定して作業が行なえる
構造とはなつていず、安全上問題があつた。
Conventional tripod stands do not necessarily have a structure that allows stable work when used on uneven ground or on slopes, and this poses a safety problem.
本考案はこのような問題に対処してなされたも
ので起伏地や傾斜地においても安全に使用しうる
ように、後部の支持杆の長さを調節しうるように
した金属製三脚脚立を提供するものである。
The present invention was developed in response to these problems, and provides a metal tripod pedestal whose rear support rod length can be adjusted so that it can be used safely even on undulating or sloping terrain. It is something.
以下図示の実施例により本考案を説明する。 The present invention will be explained below with reference to the illustrated embodiments.
図中１は梯子体で、２，２はこれを構成する一
対の脚杆で夫々下方にゆくに従つて外側に湾曲し
て拡がつた形状をしており、その上端は夫々長方
形状の台枠３の前杆（図示せず）の両端部に取付
けられている。４は脚杆２，２の夫々の後方に略
平行に設けられた補強杆で上端は夫々台枠３の側
杆３ａに取付けられ、下端は脚杆２，２の夫々の
下端部に取付けられている。５ａ〜５ｆはこれら
一対の脚杆２，２と補強杆４，４の間に略等間隔
をおいて横架された長方形状踏枠で、再下段の路
枠５ｆの後部中央には支持杆９を閉脚した場合の
係止用片６が設けられている。７は脚杆２，２及
び支持杆９の夫々の下端部に取付けられた滑り止
であり、８は把手である。９は後部の支持杆でそ
の上端は台枠３の後杆３ｂに設けられた外管３
b′の中央部に取付けられ、後杆３ｂに対し回動自
在に連結されて開閉脚可能とされている。又支持
杆９の上部には作業用足掛１０が把手兼用として
突設されている。 In the figure, 1 is a ladder body, and 2 and 2 are a pair of leg rods, each of which has a shape that curves and expands outward as it goes downwards, and its upper end is a rectangular platform. It is attached to both ends of the front rod (not shown) of the frame 3. Reference numeral 4 indicates a reinforcing rod which is provided approximately parallel to the rear of each of the leg rods 2, 2, the upper end of which is attached to the side rod 3a of the underframe 3, and the lower end of which is attached to the lower end of each of the leg rods 2, 2. ing. Reference numerals 5a to 5f are rectangular tread frames horizontally suspended at approximately equal intervals between the pair of leg rods 2, 2 and the reinforcing rods 4, 4, and a support rod is provided at the center of the rear of the lower road frame 5f. A locking piece 6 is provided when the legs 9 are closed. Reference numeral 7 represents a non-slip member attached to the lower end of each of the leg rods 2, 2 and the support rod 9, and 8 represents a handle. 9 is a support rod at the rear, and its upper end is connected to the outer tube 3 provided on the rear rod 3b of the underframe 3.
It is attached to the center part of b' and is rotatably connected to the rear rod 3b so that the legs can be opened and closed. Further, a working footrest 10 is protruded from the upper part of the support rod 9 and also serves as a handle.
このような構成において、支持杆９を断面Ｄ字
状欠円管よりなる上部杆１１とこれに内嵌接続す
る断面Ｄ字状欠円管よりなる下部杆１２で構成し
たもので、夫々の杆の欠円平面部１１ａ，１２ａ
はその巾が曲面部１１ｂ，１２ｂの径より若干小
さく形成されており、それらの面が杆の内側（閉
脚側）にくるよう配置されている。第３図〜第７
図に拡大図示するようにこの上部杆１１の下端部
にはその延長方向に沿つて方形の底板１３ａを有
する対面開放のガイド函１３がその開放側を外側
（開脚側）にしてその上部側板１３ｂの略中央部
で取付けられ、そこに上部杆１１の下端部を開口
させ、開口部D1を形成している。一方該ガイド
函１３の下部側板１３ｃの略中央部には上記上部
側板１３ｂの開口部D1に対向してそれと同じ大
きさのＤ字状開口部D2が穿設され、又ガイド函
１３の底板１３ａには上部側板１３ｂ寄りの位置
に係止板１５係止用の係止部１４が突設されてい
る。なお、上記ガイド函１３の上部側板１３ｂ及
び下部側板１３ｃは上部が半円形状の舌状形に形
成されており、左右の側板１３ｄ，１３ｄよりも
半円形状の部分が余分に延設されている。このよ
うに形成されたガイド函１３の下部側板１３ｃの
開口部D2及び上部側板１３ｂの開口部D1を挿通
して上部杆１１内に下部杆１２を所望の長さ挿嵌
接続して支持杆９の長さを調節するのであるが、
その際該ガイド函１３内における下部杆１２に、
第６図に示すような略中央部に該下部杆１２の外
径よりも少し大き目のＤ字状係止孔D3を有する
複数枚（図では２枚）の係止板１５，１５を遊嵌
してそれらの下端部を前記底板１３ａに設けた係
止部１４の下側に係止させ、それら係止板１５，
１５と下部側板１３ｃ間の下部杆１２にスプリン
グ１６巻装して、第３図及び第４図に示すように
その押圧作用により上記係止板１５，１５を上部
側板１３ｂ方向に傾斜させて下部杆１２に係止さ
せ、その摩擦係止作用により該下部杆１２をその
所望の接続位置に固定させるものである。 In such a configuration, the support rod 9 is composed of an upper rod 11 made of a circular tube with a D-shaped cross section, and a lower rod 12 made of a circular tube with a D-shaped cross section, which is fitted and connected to the upper rod 11. missing circular plane parts 11a, 12a of
The width is formed to be slightly smaller than the diameter of the curved surface portions 11b and 12b, and these surfaces are arranged on the inside of the rod (closed leg side). Figures 3 to 7
As shown in the enlarged view in the figure, a guide box 13 that is open facing and has a rectangular bottom plate 13a along its extension direction is installed at the lower end of the upper rod 11 with its open side facing outward (open leg side) and its upper side plate. 13b, and the lower end of the upper rod 11 is opened there to form an opening D1 . On the other hand, a D-shaped opening D 2 having the same size as the opening D 1 of the upper side plate 13 b is bored at approximately the center of the lower side plate 13 c of the guide box 13 . A locking portion 14 for locking the locking plate 15 is provided protruding from the bottom plate 13a at a position near the upper side plate 13b. The upper side plate 13b and the lower side plate 13c of the guide box 13 are formed into a tongue-like shape with a semicircular upper part, and the semicircular portion extends further than the left and right side plates 13d, 13d. There is. The lower rod 12 is inserted into the upper rod 11 to a desired length by passing through the opening D 2 of the lower side plate 13c and the opening D 1 of the upper side plate 13b of the guide box 13 formed in this way, and is supported. The length of the rod 9 is adjusted,
At that time, in the lower rod 12 in the guide box 13,
As shown in FIG. 6, a plurality of (two in the figure) locking plates 15, 15 each having a D-shaped locking hole D3 slightly larger than the outer diameter of the lower rod 12 at approximately the center thereof are installed. These locking plates 15,
A spring 16 is wound around the lower rod 12 between the upper side plate 15 and the lower side plate 13c, and as shown in FIGS. The lower rod 12 is locked to the rod 12, and the lower rod 12 is fixed at the desired connection position by its frictional locking action.
この係止板１５，１５による係止の解除は、第
７図に示すように係止板１５，１５の上端部に矢
印方向の力を加えてそれら係止板１５，１５を
下部杆１２，１２に対して垂直に位置させること
により行なうことができ、又さらに下部杆１２の
接続位置の調節、つまり支持杆９の長さを調節す
る場合には係止を解除した状態で下部杆１２を矢
印又は方向に移動させて長さを調節した後、
係止板１５，１５にかけていた矢印方向の力を
除けば、再びスプリング１６による押圧作用によ
り係止板１５，１５によつて下部杆１２を係止す
ることができる。 The locking by the locking plates 15, 15 is released by applying force in the direction of the arrow to the upper ends of the locking plates 15, 15, as shown in FIG. In addition, when adjusting the connection position of the lower rod 12, that is, adjusting the length of the support rod 9, the lower rod 12 can be adjusted with the lower rod 12 in the unlocked state. After adjusting the length by moving in the direction of the arrow,
If the force in the direction of the arrow applied to the locking plates 15, 15 is removed, the lower rod 12 can be locked by the locking plates 15, 15 again by the pressing action of the spring 16.
なお、この係止板１５，１５による下部杆１２
の係止は、係止板１５，１５のＤ字状係止孔D3，
D3の周縁部と下部杆１２の外周面との摩擦係止
作用によるものであるが、該Ｄ字状係止孔D3に
嵌入する下部杆１２も同形の断面Ｄ字状欠円管で
相互に対応する平面部と曲面部で嵌合しているの
で、従来例のように円形状孔に円筒管を嵌入係止
させる場合に比較して、周方向への移動がなく、
その摩擦係止作用もより大である。又、係止板１
５はガイド函１３の上部側板１３ｂ及び下部側板
１３ｃと同形の舌状形であるが、その高さはそれ
らよりも高くならないように、好ましくは少し低
く目に形成されれているので、作業中に係止板１
５上に物が落下したり、足が引つ掛かつたりして
該係止板１５による下部杆１２の係止が解除され
る恐れが少い。これら係止板１５は通常２〜３枚
用いられるが場合によりそれ以上用いることもで
きる。 Note that the lower rod 12 due to the locking plates 15, 15
The locking is done through the D-shaped locking hole D 3 of the locking plates 15, 15,
This is due to the frictional locking action between the peripheral edge of D 3 and the outer circumferential surface of the lower rod 12, but the lower rod 12 that fits into the D-shaped locking hole D 3 is also a hollow pipe with a D-shaped cross section of the same shape. Since they are fitted with the corresponding flat and curved parts, there is no movement in the circumferential direction compared to the conventional case where a cylindrical pipe is fitted into a circular hole and locked.
Its frictional locking action is also greater. Also, locking plate 1
Reference numeral 5 has a tongue-like shape that is the same as the upper side plate 13b and lower side plate 13c of the guide box 13, but its height is preferably slightly lower so that it is not higher than them, so that it can be easily used during work. Locking plate 1
There is little risk that the locking of the lower rod 12 by the locking plate 15 will be released due to an object falling onto the locking plate 15 or a foot getting caught. Two or three of these locking plates 15 are usually used, but more than two can be used depending on the case.
以上のように本考案の三脚脚立においては後部
の支持杆を断面Ｄ字状欠円管よりなる上部杆とこ
れに内嵌接続する断面Ｄ字状欠円管よりなる下部
杆で構成し、該上部杆の下部に設けたガイド函内
の係止機構により該下部杆を所望の接続位置で係
止固定して支持杆の長さを調節するものであつ
て、下部杆の係止機構はガイド函内にあるので作
業中それに物が落下したり、足が引つ掛かつたり
して係止作用が解除される恐れが少く、又、下部
杆に遊嵌してそれを係止する係止板の係止孔は下
部杆の断面と同形のＤ字状に形成されているの
で、周方向の移動がなくその摩擦係止作用も大で
ある。したがつて支持杆の長さを作業場所の地形
に応じて随時調節することにより、起伏地や傾斜
地においても安定性を失うことなく、安全に作業
を行なうことができる。
As described above, in the tripod stand of the present invention, the rear support rod is composed of an upper rod made of a circular tube with a D-shaped cross section, and a lower rod made of a circular tube with a D-shaped cross section, which is fitted inside and connected to the upper rod. The length of the support rod is adjusted by locking and fixing the lower rod at a desired connection position by a locking mechanism inside a guide box provided at the bottom of the upper rod. Since it is inside the box, there is less risk of the locking action being released due to things falling into it or getting your foot caught during work, and the locking mechanism that loosely fits into the lower lever to lock it. Since the locking hole in the plate is formed in a D-shape that is the same shape as the cross section of the lower rod, there is no movement in the circumferential direction and its frictional locking effect is large. Therefore, by adjusting the length of the support rod as needed according to the topography of the work place, work can be carried out safely even on undulating or sloping ground without losing stability.
第１図は本考案に係る三脚脚立の一例を示す側
面図、第２図は同上背面図、第３図は第１図にお
けるＡ−Ａ矢視拡大図で支持杆の上部杆と下部杆
の接続係止部の係止状態を示し、第４図は第３図
のＢ−Ｂ断面図、第５図は第３図のＣ−Ｃ断面
図、第６図は係止板の斜視図、第７図は支持杆の
上部杆と下部杆の接続係止部の動作説明図であ
る。
１……梯子体、３……台枠、９……支持杆、１
１……上部杆、１２……下部杆、１３……ガイド
函、１３ａ……底板、１３ｂ……上部側板、１３
ｃ……下部側板、１４……係止部、１５……係止
板、１６……スプリング、D1，D2……開口部、
D3……係止孔。
Fig. 1 is a side view showing an example of a tripod pedestal according to the present invention, Fig. 2 is a rear view of the same as above, and Fig. 3 is an enlarged view taken along arrow A-A in Fig. 1, showing the upper and lower support rods. 4 is a sectional view taken along the line BB in FIG. 3, FIG. 5 is a sectional view taken along the line C-C in FIG. 3, and FIG. 6 is a perspective view of the locking plate. FIG. 7 is an explanatory diagram of the operation of the connection and locking portion between the upper and lower rods of the support rod. 1... Ladder body, 3... Underframe, 9... Support rod, 1
1... Upper rod, 12... Lower rod, 13... Guide box, 13a... Bottom plate, 13b... Upper side plate, 13
c...lower side plate, 14...locking part, 15...locking plate, 16...spring, D1 , D2 ...opening,
D 3 ...Lock hole.
Claims (1)
に、該台枠の後部に支持杆の上端部を回動自在
に取付けて開閉脚可能としたものにおいて、支
持杆を断面Ｄ字状欠円管よりなる上部杆と、こ
れに内嵌接続する断面Ｄ字状欠円管よりなる下
部杆により構成し、欠円平面部を内側にして配
置した該上部杆の下端部に、その延長方向に沿
つて方形の底板を有する対面開放のガイド函を
開放側を外側にしてその上部側板中央部で取付
けてそこに上記上部杆の下端部を開口させると
共に、該ガイド函の下部側板中央部に上記上部
側板中央部の開口部に対抗してそれと同じ大き
さのＤ字状開口部を穿設し、かつガイド函の上
部側板寄りの底板に係止部を突設し、ガイド函
の下部側板中央部の開口部及び上部側板中央部
の開口部を通つて下部杆を上部杆内に挿嵌接続
させると共に該ガイド函内における下部杆に、
中央部に該下部杆の外形より少し大き目のＤ字
状係止孔を有する複数枚の係止板を遊嵌してそ
れらの下端部を該ガイド函底板の係止部の下側
に係止させ、これら係止板とガイド函の下部側
板間の下部杆にスプリングを巻装してその押圧
作用により上記係止板を傾斜させて下部杆に係
止させ、該下部杆を上部杆に対する所望の接続
位置で固定させることにより支持杆の長さを調
節するようにしたことを特徴とする三脚脚立。 (2) 係止板がガイド函の上部側板及び下部側板と
同形の上部が半円形状の舌状形で、高さが、そ
れらを越えないように形成されている実用新案
登録請求の範囲第(1)項記載の三脚脚立。 (3) 係止板が２〜３枚遊嵌されている実用新案登
録請求の範囲第(1)項又は第(2)項記載の三脚脚
立。[Claims for Utility Model Registration] (1) The upper end of the ladder body is attached to the front part of the underframe, and the upper end of the support rod is rotatably attached to the rear of the underframe, so that the legs can be opened and closed. In this case, the supporting rod is constituted by an upper rod consisting of a circular tube with a D-shaped cross section and a lower rod consisting of a circular tube with a D-shaped cross section, which is fitted and connected to the upper rod, and is arranged with the circular flat part on the inside. A facing-open guide box having a rectangular bottom plate along its extension direction is attached to the lower end of the upper rod at the center of the upper side plate with the open side facing outward, and the lower end of the upper rod is opened there. , a D-shaped opening of the same size as the opening in the center of the upper side plate is formed in the center of the lower side plate of the guide box, and a locking part is provided in the bottom plate near the upper side plate of the guide box. is provided protrudingly, and the lower rod is inserted into and connected to the upper rod through the opening in the center of the lower side plate and the opening in the center of the upper side plate of the guide box, and the lower rod in the guide case,
A plurality of locking plates having a D-shaped locking hole slightly larger than the outer shape of the lower rod are loosely fitted in the center, and their lower ends are locked to the lower side of the locking portion of the guide box bottom plate. A spring is wound around the lower rod between these locking plates and the lower side plate of the guide box, and by its pressing action, the locking plate is tilted and locked to the lower rod, and the lower rod is moved to the desired position relative to the upper rod. A tripod pedestal characterized in that the length of the support rod can be adjusted by fixing it at the connecting position. (2) Utility model registration claim No. 1, in which the locking plate has a tongue-like shape with a semicircular upper part having the same shape as the upper side plate and lower side plate of the guide box, and the height does not exceed them. The tripod stand described in (1). (3) The tripod stepladder according to claim (1) or (2) of the utility model registration claim, in which two or three locking plates are loosely fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984163515U JPH0326876Y2 (en) | 1984-10-29 | 1984-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984163515U JPH0326876Y2 (en) | 1984-10-29 | 1984-10-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6179000U JPS6179000U (en) | 1986-05-27 |
| JPH0326876Y2 true JPH0326876Y2 (en) | 1991-06-11 |
Family
ID=30721375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984163515U Expired JPH0326876Y2 (en) | 1984-10-29 | 1984-10-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326876Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007211477A (en) * | 2006-02-09 | 2007-08-23 | Kitazawa Nosanki Seisakusho:Kk | Leg with length adjusting device, and stepladder |
| ES2726662T3 (en) * | 2014-12-16 | 2019-10-08 | Swemac Innovation Ab | Guide Cable Control Device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652393U (en) * | 1979-09-28 | 1981-05-08 | ||
| JPS5719268U (en) * | 1980-07-04 | 1982-02-01 |
-
1984
- 1984-10-29 JP JP1984163515U patent/JPH0326876Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6179000U (en) | 1986-05-27 |
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