JPS6236955Y2

JPS6236955Y2 -

Info

Publication number: JPS6236955Y2
Application number: JP9562081U
Authority: JP
Priority date: 1981-06-26
Filing date: 1981-06-26
Publication date: 1987-09-19
Also published as: JPS57205398U

Description

【考案の詳細な説明】この考案は、折畳み式脚立に関し、その目的と
するところは、使用状態において左右の脚の各一
対の支柱を正面よりみてハ形に開くことができて
非常に安定であり、しかも格納状態において左右
の脚を構成する４本の支柱を最もコンパクトな状
態に畳むことができる非常に便利な構造を提供し
ようとするにある。[Detailed description of the invention] This invention relates to a folding stepladder.The purpose of this invention is to make it very stable by allowing each pair of supports on the left and right legs to open in a C-shape when viewed from the front when in use. Moreover, the purpose is to provide a very convenient structure in which the four pillars forming the left and right legs can be folded into the most compact state in the stored state.

この考案を、以下図面に示す実施例に基づいて
説明する。なお、この実施例に示されているもの
は、アルミニウム製脚立である。 This invention will be explained below based on embodiments shown in the drawings. Note that what is shown in this example is an aluminum stepladder.

図面において、この考案による脚立は、一対の
蝶番７を介して一直線状に伸ばし得るように互い
に連結せられた左脚１と右脚２とが、それぞれ一
対の支柱３，４とこれらの中間に渡された４段の
踏桟５，６とによつて構成されている。一対の支
柱３，４はそれぞれ開口部８を内側に向けた横断
面コ形を有している。最上段の踏桟５は１本の角
パイプよりなるものであり、残り３段の踏桟６は
互いに嵌め合わせられた大きさの異なる内外一対
の角パイプ６ａ，６ｂとによつて構成され、伸縮
自在となされている。踏桟５，６の両端部はそれ
ぞれピン９によつて支柱３，４に回動自在なるよ
うに連結されるとともに、踏桟５，６が上方へ90
度回動し得るように、これらの両端部のうちの一
方の端部の上縁と同他方の端部の下縁にそれぞれ
正面よりみて円弧形の面取り部１０が設けられて
いる。踏桟５，６および６，６同志の間隔は、伸
縮自在な踏桟６が最も縮んだ長さより若干広い目
にあけられており、脚立の折畳みのさいに支柱
３，４を相互に合わせることにより、各踏桟６は
両支柱３，４の開口部８内に収められるようにな
つている。 In the drawing, the stepladder according to this invention has a left leg 1 and a right leg 2, which are connected to each other via a pair of hinges 7 so that they can be extended in a straight line, and a pair of supports 3 and 4, respectively, and a pair of supports 3 and 4 in the middle thereof. It is composed of four tiers of treadles 5 and 6. The pair of struts 3 and 4 each have a U-shaped cross section with the opening 8 facing inward. The top step 5 is made of one square pipe, and the remaining three steps 6 are made up of a pair of inner and outer square pipes 6a and 6b of different sizes that are fitted into each other. It is made to be expandable and contractible. Both ends of the tread bars 5, 6 are rotatably connected to the columns 3, 4 by pins 9, respectively, and the tread bars 5, 6 are rotated upward by 90°.
In order to enable rotation, an arcuate chamfered portion 10 is provided at the upper edge of one of these ends and the lower edge of the other end, respectively, when viewed from the front. The spacing between the steps 5, 6 and 6, 6 is slightly wider than the length of the telescopic step 6 when it is at its most contracted length, so that the supports 3, 4 can be aligned with each other when the stepladder is folded. As a result, each step 6 can be accommodated within the opening 8 of both supports 3 and 4.

左右の脚１，２の最下段の伸縮自在な踏桟６に
おいて、外側角パイプ６ｂの先端部下面にそれぞ
れ長いＵ形の一対の止め金１１，１２が取付金具
１３によつて揺動自在に取り付けられている。こ
れらの止め金１１，１２は左右の脚１，２の各一
対の支柱３，４が正面よりみてハ形に開いた状態
において両支柱３，４の間隔を一定に保持するた
めのものである。すなわち、これらの止め金１
１，１２は、それぞれのＵ形の折返し部１４が共
通の取付金具１３に掛け止められるとともに、Ｕ
形の先端部に両外側に折曲げ状に設けられた一対
の凸起１５が各支柱３，４下端部の両側壁３ａ，
４ａの所定箇所にあけられた貫通孔１６に差し込
まれることにより、両支柱３，４と踏桟６との間
に正面よりみて略逆Ｖ形に掛け渡されている。一
対の止め金１１，１２のうち、一方の止め金１１
は正面よりみて直線状であるのに対し、他方の止
め金１２の折返し部１４寄りの部分には正面より
みてく形の折曲げ部１７が設けられており、脚立
を折畳むさい、たとえば第４図に示すように、こ
れらの止め金１１，１２を相互に重ね合わせるこ
とができる。右脚２の一対の支柱３，４のそれぞ
れ上端寄りの部分の両外側には一対の掛け金１８
がピン９によつて揺動自在に取り付けられてお
り、これらの掛け金１８の先端部は、左右の脚
１，２が側面よりみてハ形に開かれたさいに、左
脚１の支柱３，４の上端寄りの部分に渡し止めら
れるものである。また左右の脚１，２の支柱３，
４の下端には滑止め座片１９がそれぞれ取り付け
られている。 A pair of long U-shaped clasps 11 and 12 are attached to the bottom surface of the tip of the outer corner pipe 6b on the lowermost extensible treadle 6 of the left and right legs 1 and 2, respectively, and are swingable by means of a mounting bracket 13. attached. These clasps 11 and 12 are used to maintain a constant distance between the respective pairs of supports 3 and 4 of the left and right legs 1 and 2 when they are opened in a C-shape when viewed from the front. . That is, these clasps 1
1 and 12, each U-shaped folded part 14 is hung on a common mounting bracket 13, and
A pair of protrusions 15 are provided at the tip of the shape in a bent manner on both sides.
By being inserted into a through hole 16 drilled at a predetermined location of 4a, it is spanned between both supports 3, 4 and step 6 in a substantially inverted V shape when viewed from the front. One clasp 11 of the pair of clasps 11 and 12
is straight when viewed from the front, whereas the other clasp 12 is provided with a bent portion 17 near the folded portion 14, which is shaped like a square when viewed from the front. As shown in FIG. 4, these clasps 11, 12 can be superimposed on each other. A pair of latches 18 are provided on both outer sides of the upper end portions of the pair of struts 3 and 4 of the right leg 2.
are swingably attached by pins 9, and the tips of these latches 18 are attached to the supports 3 and 3 of the left leg 1 when the left and right legs 1 and 2 are opened in a C shape when viewed from the side. 4, which can be stopped near the upper end. Also, the pillars 3 of the left and right legs 1 and 2,
A non-slip seat piece 19 is attached to the lower end of each member 4.

上記折畳み式脚立は、その使用状態において、
第１図に実線で示すように、左右の脚１，２の支
柱３，４がそれぞれ正面よりみてハ形に開かれる
とともに、第２図に２点鎖線で示すように左右の
脚１，２同志も側面よりみてハ形に開かれてい
て、脚立は全体として截頭角錐形となされてい
る。そして、左右の脚１，２の上端寄りの部分に
一対の掛け金１８が渡し止められるとともに、左
右の脚１，２の最下段の踏桟６と支柱３，４との
間に一対の止め金１１，１２が正面よりみて略逆
Ｖ形に渡し止められている。左右の脚１，２の踏
桟５，６はそれぞれ最上段の踏桟５が最も短く、
これより下段の踏桟６に至るほど順に長くなるよ
うに伸ばされている。この脚立を折り畳むには、
まず第２図に実線で示すように、一対の掛け金１
８を外して左右の脚１，２を閉じ、これらを互い
に平行状となす。つぎに、第３図に実線で示すよ
うに、左右の脚１，２の各一対の止め金１１，１
２を外し、支柱３，４を平行状とすると、伸縮自
在な３段の踏桟６はこれらの内側パイプ６ａが外
側パイプ６ｂ内に収められ、それぞれ最も短くな
される。そして最後に左右の脚１，２の一方の支
柱４を他方の支柱３にそれぞれ合わせる。する
と、踏桟５，６はピン９を中心として90度回転
し、最上段の踏桟５を除く残りの踏桟６が支柱
３，４の開口部８内に収められる。これにより脚
立は左右の脚１，２の合計４本の支柱３，４がほ
とんど束ねられるようにして最もコンパクトな状
態に畳まれるものである。 The above-mentioned folding stepladder, when in use,
As shown by the solid lines in FIG. 1, the supports 3 and 4 of the left and right legs 1 and 2 are opened in a C shape when viewed from the front, and as shown by the two-dot chain line in FIG. When viewed from the side, the comrade is also open in a C-shape, and the stepladder as a whole is shaped like a truncated pyramid. A pair of latches 18 are secured to the upper ends of the left and right legs 1, 2, and a pair of latches 18 are provided between the bottom step 6 of the left and right legs 1, 2 and the supports 3, 4. 11 and 12 are held together in a substantially inverted V shape when viewed from the front. As for the treadles 5 and 6 of the left and right legs 1 and 2, the top treadle 5 is the shortest,
From this point, it is extended so as to become longer as it reaches the lower step 6. To fold this stepladder,
First, as shown by the solid line in Figure 2, a pair of latches 1
8 and close the left and right legs 1 and 2 so that they are parallel to each other. Next, as shown by solid lines in FIG.
2 is removed and the supports 3 and 4 are made parallel, the three stages of telescopic step bars 6 are made so that the inner pipes 6a are accommodated within the outer pipes 6b, making each of them the shortest. Finally, the struts 4 of one of the left and right legs 1 and 2 are fitted to the struts 3 of the other. Then, the tread bars 5, 6 are rotated 90 degrees around the pin 9, and the remaining tread bars 6 except for the top tier 5 are accommodated in the openings 8 of the supports 3, 4. As a result, the stepladder can be folded into its most compact state, with the left and right legs 1, 2, a total of four supports 3, 4, being almost bundled together.

なお、上記実施例においては、踏桟６が互いに
大きさの異なる内外一対の角パイプ６ａ，６ｂに
より構成されていて伸縮自在となされているが、
これはその他の伸縮自在な構造の踏桟を使用する
こともできる。またこのような伸縮自在な踏桟６
が左右の脚１，２にそれぞれ３段ずつ設けられて
いるが、これは少なくとも１段ずつ設けられてお
ればよい。また左右の脚１，２の各一対の支柱
３，４を正面よりみてハ形に開いた状態に保持す
る止め金１１，１２は、最下段の踏桟６に取り付
けられているが、これは勿論その他の踏桟５，６
に取り付けられていてもよい。また止め金１１，
１２は、上記実施例に示すようなものだけでな
く、その他の構造を有するものを使用してもよ
い。 In the above embodiment, the step 6 is made up of a pair of inner and outer square pipes 6a and 6b of different sizes and is expandable and retractable.
It is also possible to use other telescoping structures. Also, such a telescopic step 6
Although three stages are provided on each of the left and right legs 1 and 2, it is only necessary to provide at least one stage each. Also, the clasps 11 and 12 that hold each pair of supports 3 and 4 of the left and right legs 1 and 2 in an open state in a C-shape when viewed from the front are attached to the lowest step 6. Of course, other stepping stones 5 and 6
It may be attached to. Also, the stopper 11,
12 is not limited to the one shown in the above embodiments, but may have other structures.

この考案にかゝる折畳み式脚立は、上述のよう
に、蝶番７を介して連結せられた左脚１と右脚２
とが、それぞれ一対の支柱３，４とこれらの中間
に渡された複数本の踏桟５，６とによつて構成さ
れ、これらの踏桟５，６は最上段の踏桟５を除い
て伸縮自在となされるとともに、各踏桟５，６の
両端部がそれぞれ支柱３，４に回動自在なるよう
にピン連結せられており、踏桟５，６のうちの少
なくとも１つに、左右の脚１，２の各一対の支柱
３，４が正面よりみてハ形に開いた状態において
両支柱３，４の間隔を一定に保持する止め金１
１，１２が取り付けられているもので、使用状態
においては、左右の脚１，２を側面よりしてハ形
に開くことができるとともに、左右の脚１，２の
一対の支柱３，４をさらに正面よりみてハ形に開
くことができ、これによつて脚立をあたかも截頭
角錐形の非常に安全な形態に保持することができ
る。しかも格納状態においては、左右の脚１，２
を構成する合計４本の支柱３，４全部をほゞ束ね
たような最もコンパクトな状態に畳むことがで
き、使用および格納に非常に便利であるという効
果を奏する。 As mentioned above, the folding stepladder according to this invention has a left leg 1 and a right leg 2 connected via a hinge 7.
Each of these is composed of a pair of supports 3, 4 and a plurality of treadles 5, 6 extending between them. In addition to being telescopic, both ends of each treadle 5, 6 are rotatably connected with pins to the supports 3, 4, respectively, and at least one of the treadles 5, 6 has a right and left side. A stopper 1 that maintains a constant distance between each pair of supports 3 and 4 of the legs 1 and 2 when the supports 3 and 4 are opened in a C shape when viewed from the front.
1 and 12 are attached, and when in use, the left and right legs 1 and 2 can be opened from the side in a C shape, and the pair of supports 3 and 4 of the left and right legs 1 and 2 can be opened from the side. Furthermore, it can be opened in a V-shape when viewed from the front, allowing the stepladder to be held in a very safe, truncated pyramid-shaped configuration. Moreover, in the retracted state, the left and right legs 1 and 2
The total of four pillars 3 and 4 constituting the can be folded into the most compact state, almost like a bundle, and it is very convenient to use and store.

[Brief explanation of the drawing]

図面はこの考案の実施例を示すもので、第１図
は使用状態の正面図、第２図は折畳み状態の側面
図、第３図は同正面図、第４図は止め金の取付け
部分の拡大正面図、第５図は第１図Ｖ−Ｖ線に沿
う部分拡大側面図である。１……左脚、２……右脚、３，４……支柱、５
……最上段の踏桟、６……伸縮自在な踏桟、６ａ
……内側角パイプ、６ｂ……外側角パイプ、７…
…蝶番、９……ピン、１１，１２……止め金。 The drawings show an embodiment of this invention; Fig. 1 is a front view of the device in use, Fig. 2 is a side view of the folded state, Fig. 3 is a front view of the same, and Fig. 4 is a view of the attachment part of the clasp. FIG. 5 is a partially enlarged side view taken along line V-V in FIG. 1. 1... Left leg, 2... Right leg, 3, 4... Support, 5
...Top step step, 6...Extendable step, 6a
...Inner corner pipe, 6b...Outer corner pipe, 7...
...Hinge, 9...pin, 11, 12...clasp.

Claims

[Scope of utility model registration request]

A left leg 1 and a right leg 2 are connected via a hinge 7, and are each composed of a pair of supports 3, 4 and a plurality of treads 5, 6 extending between them. The treadles 5 and 6 are extendable and retractable except for the topmost treadle 5, and both ends of each treadle 5 and 6 are rotatably connected to the supports 3 and 4 by pins. At least one of the treadles 5 and 6 is provided with a constant spacing between the two supports 3 and 4 in a state where each pair of supports 3 and 4 of the left and right legs 1 and 2 are opened in a C shape when viewed from the front. Clasp 1 to hold
A folding stepladder with numbers 1 and 12 attached.