JPH09324591A - Ladder free from toppling on slant-stepped land - Google Patents

Ladder free from toppling on slant-stepped land

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Publication number
JPH09324591A
JPH09324591A JP8179763A JP17976396A JPH09324591A JP H09324591 A JPH09324591 A JP H09324591A JP 8179763 A JP8179763 A JP 8179763A JP 17976396 A JP17976396 A JP 17976396A JP H09324591 A JPH09324591 A JP H09324591A
Authority
JP
Japan
Prior art keywords
front support
ladder
support legs
leg
joint
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.)
Pending
Application number
JP8179763A
Other languages
Japanese (ja)
Inventor
Kokichi Takahashi
幸吉 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP8179763A priority Critical patent/JPH09324591A/en
Publication of JPH09324591A publication Critical patent/JPH09324591A/en
Pending legal-status Critical Current

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  • Ladders (AREA)

Abstract

PROBLEM TO BE SOLVED: To ensure safety for a foothold against unevenness or difference in level at the ground surface and to make installation easy by a method wherein a front support leg of a three-legged ladder is made accommodative to turning toward the right and the left and also made available for being split into two to change the three-legged structure into a four-legged structure. SOLUTION: Front support legs 4 are united together with magnetic plates 12 and 13 and serve as a part of a three-legged ladder when used at a flat ground, and the front support legs 4 are made to form two legs of a four-legged ladder, with the magnetic plates 12 and 13 bring separated from each other, when used at a slope or an uneven ground. The front support legs 4 are softly attached to a leg plate 7 with a front support leg shaft 8, forming a joint for making movement toward the right and the left available. Joint sleeves 6 are provided separately at the right and the left and fixed to an upper bed 3 with leg shafts 5 inserted respectively therein, and thereby a joint for forward and rearward movement is formed. By virtue of these two joints, the front support legs 4 function as a support that moves in a range of 360 deg. toward the front and the rear, and the right and the left. A cross- shaped joint is constructed at each of the front support legs 4 with a toe joint shaft 9 and a stop plate shaft 11 inserted respectively into a toe frame 10 and a stop plate 15 of the front support leg 4, and thereby the front support legs 4 are made capable of holding the ground correctly even through the angle of opening varies widely for the front support legs.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】人の背丈より高所の諸作業は梯子
を利用する道具の一つであるが、この梯子程転倒事故が
多く一命を落すか、不具者に成る者等、犠牲者は今も後
を絶つ事なく発生しているものである。本発明斜段無転
倒梯子は三脚梯子の前支脚が必要に応じ2本脚に分れ四
脚に変脚し、如何なる斜段地でも安全に速応し得る無転
倒梯子を発明したものである。
[Industrial field of application] Work at heights higher than the height of a person is one of the tools that use a ladder. However, this ladder is more likely to fall and lose its life or become a victim of a disabled person. The people are still constantly occurring. The slope-less tipping ladder of the present invention is an invention of a tipping ladder in which the front support leg of a tripod ladder is divided into two legs as necessary to transform into four legs, and which can safely and quickly respond to any slope. .

【0002】[0002]

【従来の技術】従来の梯子においては、利用の都度、転
倒の不安を常持し、例えば、家の高所作業、植木剪定作
業等が行われるに安定を必要とする足場が水平か、梯子
が水平でない限り危険である。少しでも段差があれば、
前後、左右に揺動が激しく危険であった。
2. Description of the Related Art Conventional ladders have a fear of falling each time they are used, and for example, whether the scaffolding that is stable for performing work at a high place or pruning of a house is horizontal or a ladder. Dangerous unless is horizontal. If there is a slight step,
It was dangerous to rock back and forth and left and right.

【0003】前記の揺動を解決するため三脚梯子が登場
するが確かに三脚梯子は段差では揺動しないが前脚2本
に対して三脚梯子の重芯は常に1本にかかっているため
1本脚では転倒の危険比率は非常に高いのである。
A tripod ladder appears to solve the above-mentioned swing, but the tripod ladder certainly does not swing at a step, but the center of gravity of the tripod ladder always depends on one for two front legs. For legs, the risk of falling is very high.

【0004】特に梯子が高く成る程少しの段差でも倒角
は大きくなるのである。高さ3m物で、巾50cmの梯
子が仮に右脚が5cmの段差高に足場を定着させると梯
子天場では左に10倍の50cmも傾く、これでは登れ
ない5cmの段差が命取りに成る。これを解決するた
め、梯子巾を下方に成る程、ハ状に広く開き高さ3m物
で足巾を1mにも開いて転倒しない様に改良されている
が、足巾が2倍に広くなれば重量も2倍に成る。その他
色々転倒防止に足巾を広くする補助足を設ける。又本体
後足が伸縮する等で常に水平が維持出来る改良型も見ら
れたが使用上、不便・面倒で移動する度に調節が必要で
面倒であった。
In particular, the higher the ladder is, the larger the inclination angle becomes even if the step is small. If a ladder with a height of 3 m and a width of 50 cm is fixed at a step height of 5 cm on the right leg, the ladder will tilt 10 times to the left by 50 cm at the step height. To solve this problem, the lower the ladder width is, the wider it opens in a c-shape and the height is 3m. It will double the weight. In addition, auxiliary feet are provided to widen the foot width to prevent falls. There was also an improved type in which the hind legs of the main body were able to always be kept horizontal due to expansion and contraction, etc. However, it was troublesome to use every time it was moved due to inconvenience and trouble.

【0005】従来の三脚梯子は3本足で転倒し易く、四
脚梯子はくらくら揺動し、これを防止する付属品は面倒
で使い難く、どちらにしても軽い。使い易い。安全性と
は言えない従来の梯子である。
The conventional tripod ladder easily falls on three legs, and the four-leg ladder swings easily, and the accessories for preventing this are troublesome and difficult to use, and are light in any case. Easy to use. It is a conventional ladder that cannot be said to be safe.

【0006】[0006]

【発明が解決しようとする課題】本発明は上述した数多
くの従来の梯子の欠点を改良し得る目的において、如何
なる悪条件下の不整地でも、梯子が如何に斜になっても
転倒しない。設置操作が容易である。軽くて強い。且
つ、安全な斜段無転倒梯子を提供する事を目的としたも
のである。
The present invention is intended to remedy many of the disadvantages of conventional ladders described above and will not tip over rough terrain under any adverse conditions, no matter how inclined the ladder may be. Easy to install. Light and strong. In addition, the purpose is to provide a safe slope-less tipping ladder.

【0007】[0007]

【課題を解決するための手段】本発明梯子は昇り段の有
する方を本体と言い本体の足を後足と言う。自由自在に
動く前足を前支脚と名付ける。この前支脚2本が各自、
別々に360度自由自在に動く事をなし得、又、前支脚
の動きに合わせ本体後足が即応し動く事が出来得る。こ
の奇妙な曲芸的な動きをなし得る斜段無転倒梯子は、転
倒しようとする方角に前支脚を凹凸不整地の足場に無条
件で定着出来得る様になした。この前支脚の開きと本体
動きに合わせて本体後足は自動的に不思議な動きをな
し、同じく足場も凹凸不整地に何ら問題なく足場を速応
定着させ得る事を開発した斜段無転倒梯子。
In the ladder of the present invention, the one that the rising step has is called the main body, and the legs of the main body are called the rear legs. The freely movable front leg is named the front support leg. These two front legs are
It is possible to separately move 360 degrees freely, and it is also possible for the rear legs of the main body to move instantly according to the movement of the front support leg. This bizarre acrobat ladder that can perform a strange acrobatic movement is able to unconditionally fix the front support leg to a scaffold on uneven terrain in the direction to fall. The slanted tipless ladder developed to make the scaffold automatically move strangely in accordance with the opening of the front support leg and the movement of the main body, and the scaffolding can also quickly and firmly fix the scaffold on uneven terrain. .

【0008】[0008]

【作用】本発明梯子は平地での使用は、三脚梯子で使用
されているが傾斜地や不整地等の段差地での使用時は四
脚梯子に変脚する。この四脚梯子は地面の高低を問わず
人の手足と全く同じ動作をしながら安定した場所を求め
る事が出来得る。つまり人が右手を前に出す時、右肩が
前に出、この動作に合せ左後足が前に出ると同時に体を
左右に動し乍ら前進する。このように前支脚一本を動か
すだけで人間動作に合致した動作を梯子自体が全身の動
きを起し前支脚は人間の手で体を支える様に安全位置へ
と何ら心配も、不安もなく前支脚を自由に定着出来得る
様になし得えた斜段無転倒梯子。
The ladder of the present invention is used as a tripod ladder when used on a flat land, but changes to a quadruped ladder when used on a stepped land such as a sloping ground or an uneven ground. This four-legged ladder can move in exactly the same way as a person's limbs regardless of the height of the ground, and can find a stable place. In other words, when a person puts his right hand forward, his right shoulder goes forward, and in response to this movement, his left hind leg moves forward, and at the same time he moves his body left and right to move forward. In this way, just by moving one front support leg, the ladder itself moves the whole body to move in accordance with the human movement, and the front support leg supports the body with human hands. A tilt-less tipping ladder that was made so that the front support legs could be fixed freely.

【0009】又、梯子に要求される事は軽量で強い梯子
である事、本発明の梯子は、登り段付の本体巾がいかに
高く成っても50cm巾でも良い梯子巾を何ら問題にす
る事のない本発明梯子である。従来の三脚梯子は本体後
足巾が重要な問題で、高さ4m物で足巾が下に成る程広
く1.50m巾にも約3倍近くの広さになっている。更
に高く成るに従って足巾を広くしないと転倒する危険が
ある。このように足巾が広く成る程重量が増大し2倍、
3倍も重く成る。本発明梯子は高くなっても足巾を変え
る事なく、従来梯子の重量に比較したら普通サイズで2
分の1、大形で3分の1以下の軽量で止める事が可能で
ある。植木剪定等は木立の狭い空間を次々に移動し、立
替作業が大変で軽量でない限り長時間使用不可能である
が故に軽量を目的に発明した斜段無転倒梯子。
Further, what is required of the ladder is that it is a lightweight and strong ladder, and the ladder of the present invention does not matter how high the ladder width of the main body of the climbing step is 50 cm. It is a ladder according to the present invention. In the conventional tripod ladder, the rear foot width of the main body is an important issue, and it is as wide as the foot width is 4 m and the foot width is lower, and it is about 3 times as large as the 1.50 m width. There is a risk of falling unless the foot width is widened as the height increases. In this way, the wider the foot width, the heavier the weight and double the
It is three times as heavy. The ladder of the present invention does not change the foot width even when it is raised, and it is 2
It is possible to stop with a weight that is one-third, large and one-third or less. A slanted tipless ladder that was invented for the purpose of lightweighting because it can be used for a long time unless it is light and it is difficult to replace trees such as pruning trees that move in narrow spaces one after another.

【0010】[0010]

【発明の効果】以上の様に本発明梯子は、如何なる地面
の高低、段差の不整地であっても、水平調整や補助足
等、転倒に対する心配は皆無である。足場の高低を気に
する事なく前支脚と本体後足は常に凹凸地面に即応し、
独自の動きで最適地に安全な足場を定める事をなし、三
脚、四脚梯子の動きに合せ安全な体型に本体の動作は即
応し得るものである。この動作に依って如何なる傾斜の
段差地でも梯子の定着不安を、なからしむる様にした本
発明、斜段無転倒梯子。
INDUSTRIAL APPLICABILITY As described above, the ladder of the present invention has no fear of tipping over, such as horizontal adjustment and auxiliary feet, regardless of the height of the ground or uneven ground. The front support leg and the rear foot of the main body always respond to uneven ground without worrying about the height of the scaffold,
By establishing a safe scaffold on the optimum ground by its own movement, the movement of the main body can immediately respond to the safe body shape according to the movement of the tripod and quadrupedal ladder. According to the present invention, the slope-less tipping ladder according to the present invention is provided so as to prevent the anxiety of the ladder from being settled on any sloped land.

【0011】[0011]

【実施例】以下、本発明の実施例について説明する。図
1に示す実施例は斜段無転倒梯子の側面図で、本発明は
傾斜地であっても又、高い段差地であっても名称通り斜
段無転倒梯子である。その実験に次の実施例を上げよ
う。先ず、前支脚4.の左足を50cm高い所に設定し
て次に本体後足1.の右足を30cm高い所に設置して
も転倒する事なく60kgの大男が登って作業が充分出
来た。又、前支脚4.も本体後足1.も左のみ30cm
高い所に足場を設定して作業の実験を試した。この時梯
子は右に約20度傾斜して見るからに登れない程の斜で
あったが、此の梯子に登って作業は充分出来た。以上の
ように本発明の梯子は、如何なる傾斜地凹凸や段差地で
もその条件に素早く即応して、安全な体型を作り無転倒
を約束出来る。本発明の斜段無転倒梯子である。
Embodiments of the present invention will be described below. The embodiment shown in FIG. 1 is a side view of a slope-less tipping ladder, and the present invention is, as the name implies, a slope-less tipping ladder whether it is a slope or a high step. Let us give the following example to the experiment. First, the front support leg 4. Set the left foot of the to 50 cm higher and then the rear foot of the body 1. Even if his right foot was placed 30 cm higher, a 60 kg big man could climb and work well without falling. Also, the front support leg 4. Also the rear legs of the body 1. Only left 30cm
I tried a work experiment by setting a scaffold at a high place. At this time, the ladder was so inclined that I couldn't climb it because it was tilted about 20 degrees to the right, but I was able to work on this ladder. As described above, the ladder of the present invention can promptly respond to any sloping surface unevenness or step, and can build a safe figure to ensure no fall. It is a tilt-less tipping ladder of the present invention.

【0012】斜面で段差の多い庭木剪定作業でテストを
実施して見た。池や滝の有る庭は、石が多く段差も激し
く従来の梯子では大変苦労していた。本発明の梯子は凹
凸段差の石の斜面にいとも簡単に立てる事が出来た。何
度移動しても足場の条件、段差を考える事なく思う場所
に素早く、容易に立てる事が出来るので作業能率が上り
安心して作業が出来得る斜段無転倒梯子である。
A test was conducted by pruning a garden tree with many steps on a slope. In the garden with a pond and waterfall, there were many stones and the steps were so severe that it was very difficult for a conventional ladder. The ladder of the present invention could be easily set up on a stone slope having uneven steps. No matter how many times you move, you can quickly and easily stand up at a desired place without having to consider the footing conditions and steps, so it is a ladder-less tipping ladder that increases work efficiency and allows you to work with peace of mind.

【0013】図で示す斜段無転倒梯子は12.13が磁
気板で接着して前支脚4は一本足の三脚梯子である。し
かし、斜段地での使用は図で示す12.13の磁気板を
引き放し2本足にして本体後足1.と共に四脚梯子で利
用出来る。この前支脚4は前支脚軸8で、脚板7に軟着
させ左右動の関節を作る。核関節筒6は左右別々に分離
し5の脚軸を挿入して天場3に固定前後動の関節を作
る。この2つの関節によって前支脚は前後左右360度
動く支柱として活躍する事を可能にした。又、前支脚の
足先枠10と止盤15に9と11を挿入して十字形の関
節で前後左右自在に動く足先自在関節を設け、前支脚の
開く角度がいかに変化しても地面を常に正確に掴む事が
出来る。この止盤が常に地面に平行して前支脚を正確に
支える事によって前支脚がスリップして全開転倒する心
配はなく、このように天場の関節も足先関節も十字形の
関節にし前支脚も止盤も梯子の重心のかかる方角の支柱
として、その行動範囲を広く自由自在に発揮出来得る斜
段無転倒梯子である。移動する時又、保管する時は1
2.13.の磁気板を接着させ、次にこれを本体磁気板
14.に接着させ前支脚4.と本体1.を一体にしてこ
れを保管するものである。
In the inclined non-inverted ladder shown in the figure, the front support leg 4 is a one-legged tripod ladder in which 12.13 are bonded by a magnetic plate. However, for use on slopes, the magnetic plate of 12.13 shown in the figure is released to make two legs and the rear legs of the main body 1. Available with a four-legged ladder. The front support leg 4 is a front support leg shaft 8 which is softly attached to the leg plate 7 to form a left-right joint. The nuclear joint cylinders 6 are separated into right and left, and the leg shafts of 5 are inserted to make fixed joints in the heavens 3 for forward and backward movement. These two joints made it possible for the front support leg to function as a strut that moves 360 degrees back and forth and left and right. In addition, 9 and 11 are inserted into the foot frame 10 and stop plate 15 of the front support leg to provide a universal joint that allows the front and rear legs to freely move back and forth with a cruciform joint, no matter how the opening angle of the front support leg changes. Can always be grasped accurately. Since this stop plate always supports the front support leg parallel to the ground accurately, there is no concern that the front support leg will slip and fall all the way down. It is a tilt-less tipping ladder that has a wide range of motion and can be freely used as a pillar in the direction where the center of gravity of the ladder is applied. 1 when moving or storing
2.13. Magnetic plates of the main body magnetic plate 14. Attached to the front support leg 4. And body 1. It is to store this as a unit.

【0014】[0014]

【発明の効果】以上の様に本発明によれば如何なる地面
の高低、段差の不整地であっても、高低調節や、補助足
等の転倒に対する諸調整は皆無である。従って足場の高
低を気にする事なく、前支脚と本体後足は常に凹凸地面
に即応し、独自の動きで最敵地に安全な足場を定める事
をなし、四脚梯子の動きに合せ安全な体型に本体の動作
は、即応し得るものである。この動作に依って如何なる
傾斜の段差地でも、梯子の定着不安をなからしむる様に
した本発明斜段無転倒梯子。
As described above, according to the present invention, no matter how high or low the ground is, or uneven ground, there is no adjustment of the height or adjustments for the fall of the auxiliary foot. Therefore, without worrying about the height of the scaffold, the front support leg and the rear foot of the main body always respond to uneven ground, and do not set a safe scaffold on the most enemy land by its own movement, and it is safe according to the movement of the four-legged ladder The movement of the main body can respond to various body types. According to this operation, the inclined non-overturning ladder according to the present invention is constructed so as to prevent the anxiety of the ladder from being settled on any sloping land.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の前支脚を分離した四脚梯子の側面図。FIG. 1 is a side view of a four-legged ladder in which a front supporting leg of the present invention is separated.

【図2】本発明の磁気板12.13.が接着した三脚梯
子の側面図。
FIG. 2 shows a magnetic plate 12.13. Side view of the tripod ladder bonded to.

【図3】本発明の12.13.の磁気板が一体となり1
4の本体磁気板に接着した正面図。
FIG. 3: 12.13. Magnetic plate integrated into 1
4 is a front view of the main body magnetic plate of FIG.

【符号の説明】[Explanation of symbols]

1.本体後足 2.登り段 3.天場 4.前支脚 5.脚軸 6.核関節筒 7.脚板 8.前支脚軸 9.足先関節軸 10.足先枠 11.止盤軸 12.磁気板 13.磁気板 14.本体磁気板 15.止盤 1. Main body hind legs 2. Climbing stage 3. Tenba 4. Front support leg 5. Axis 6. Nuclear joint tube 7. Leg plate 8. Front fulcrum shaft 9. Toe joint axis 10. Toe frame 11. Stopper shaft 12. Magnetic plate 13. Magnetic plate 14. Main body magnetic plate 15. Stop board

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 本発明は三脚梯子の前支脚が左右回転動
に適応し、且つ2本に分離し四脚梯子に変脚可能な斜段
無転倒梯子。
According to the present invention, there is provided an inclined stepless ladder in which a front support leg of a tripod ladder is adapted to a left-right rotational movement, and is separated into two and can be transformed into a four-leg ladder.
【請求項2】 前支脚2本の核関節筒は、左右に分離
し、前支脚軸と共に自由自在に作動し、重芯の加わる方
角の如何なる斜段地でも、転倒防止の支柱となし、前支
脚力を発揮なし得るものである。
2. A nuclear joint tube having two front support legs is separated into left and right, and freely operates together with the front support leg shaft to form a fall-prevention prop in any sloped land in which the center of gravity is applied. It is capable of exerting a supporting force.
JP8179763A 1996-06-04 1996-06-04 Ladder free from toppling on slant-stepped land Pending JPH09324591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8179763A JPH09324591A (en) 1996-06-04 1996-06-04 Ladder free from toppling on slant-stepped land

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8179763A JPH09324591A (en) 1996-06-04 1996-06-04 Ladder free from toppling on slant-stepped land

Publications (1)

Publication Number Publication Date
JPH09324591A true JPH09324591A (en) 1997-12-16

Family

ID=16071469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8179763A Pending JPH09324591A (en) 1996-06-04 1996-06-04 Ladder free from toppling on slant-stepped land

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100812768B1 (en) * 2007-03-30 2008-03-12 서동우 Safety foothold
GB2530813A (en) * 2014-10-08 2016-04-06 Richard Theaker Collapsible Ladder
CN116572817A (en) * 2023-06-12 2023-08-11 扬州通海汽车配件有限公司 Semitrailer cat ladder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63151697U (en) * 1987-03-24 1988-10-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63151697U (en) * 1987-03-24 1988-10-05

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100812768B1 (en) * 2007-03-30 2008-03-12 서동우 Safety foothold
GB2530813A (en) * 2014-10-08 2016-04-06 Richard Theaker Collapsible Ladder
GB2530813B (en) * 2014-10-08 2016-10-12 Theaker Richard Collapsible Ladder
CN116572817A (en) * 2023-06-12 2023-08-11 扬州通海汽车配件有限公司 Semitrailer cat ladder

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