JP2021080803A - Over-turning prevention device for stepladder - Google Patents

Over-turning prevention device for stepladder Download PDF

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JP2021080803A
JP2021080803A JP2019211409A JP2019211409A JP2021080803A JP 2021080803 A JP2021080803 A JP 2021080803A JP 2019211409 A JP2019211409 A JP 2019211409A JP 2019211409 A JP2019211409 A JP 2019211409A JP 2021080803 A JP2021080803 A JP 2021080803A
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stepladder
shaft hole
support member
shaft
fall prevention
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JP7268866B2 (en
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敦司 杉野
Atsushi Sugino
敦司 杉野
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Sukulogi Marketing Co Ltd
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Sukulogi Marketing Co Ltd
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Abstract

To provide an over-turning prevention device for a stepladder that facilitates supporting the stepladder on the ground in a better condition when supporting it in an auxiliary manner, and that can more reliably prevent the stepladder from over-turning.SOLUTION: An over-turning prevention device for a stepladder which is disclosed in the present application includes a rod-shaped support member 10, a mounting member 20, and a connecting mechanism 30. The mounting member 20 attaches the support member 10 to a stepladder 100. The coupling mechanism 30 rotatably connects the support member 10 to the mounting member 20 for rotation in two axial directions, a first direction X1 and a second direction X2.SELECTED DRAWING: Figure 1

Description

本発明は、脚立用転倒防止具に関し、脚立を補助的に支持する脚立用転倒防止具に関するものである。 The present invention relates to a fall prevention device for a stepladder, and relates to a fall prevention device for a stepladder that assists the stepladder.

脚立を補助的に支持する脚立用転倒防止具として、特許文献1には、棒状の支持部材を具備する脚立用転倒防止具が記載されている。特許文献1に記載の脚立用転倒防止具においては、支持部材の上端部が、脚立における支柱の上部に連結され、支持部材の下端部が、地面に当接され、支持部材によって、転倒しないように脚立が支持される。支持部材の長さと支柱に対する角度は調節可能であり、支持部材によって脚立を地面に支持する角度が調節可能である。 As a fall prevention tool for a stepladder that assists the stepladder, Patent Document 1 describes a fall prevention tool for a stepladder provided with a rod-shaped support member. In the fall prevention tool for stepladder described in Patent Document 1, the upper end of the support member is connected to the upper part of the support column in the stepladder, and the lower end of the support member is brought into contact with the ground so that the support member does not fall. The stepladder is supported. The length of the support member and the angle with respect to the strut are adjustable, and the angle at which the stepladder is supported on the ground is adjustable by the support member.

実登第3006956号公報Jitsuto No. 3006956

しかしながら、特許文献1に記載の脚立用転倒防止具においては、作業を行うのに最適な位置と向きに脚立を設置した状態において、支持部材の下端部が当接する地面の位置を自由に選定できないといった問題がある。例えば、支持部材の下端部が当接する位置において、地面が、部分的に軟弱であったり、部分的に傾斜していたりするような場合に、脚立を安定的に支持するためには、支持部材の下端部の位置を変更し、より良い状態の地面で脚立を支持することが必要となる。 However, in the fall prevention tool for a stepladder described in Patent Document 1, the position of the ground where the lower end of the support member abuts cannot be freely selected when the stepladder is installed at the optimum position and orientation for performing the work. There is a problem such as. For example, in order to stably support the stepladder when the ground is partially soft or partially inclined at the position where the lower end of the support member abuts, the support member It is necessary to reposition the lower end of the stepladder to support the stepladder on better ground.

ところが、特許文献1に記載の脚立用転倒防止具においては、支持部材の下端部が当接する地面の位置を自由に選定できず、作業を行うのに最適な位置と向きに脚立を設置したままでは、脚立を安定的に支持できなくなることがあり得る。 However, in the fall prevention tool for a stepladder described in Patent Document 1, the position of the ground where the lower end of the support member abuts cannot be freely selected, and the stepladder remains installed in the optimum position and orientation for the work. Then, it may not be possible to stably support the stepladder.

本発明は、上記課題に鑑みてなされたものであり、その目的は、脚立を補助的に支える際に、より良い状態の地面で支えることを容易にし、脚立の転倒をより確実に防止できる脚立用転倒防止具を提供することにある。 The present invention has been made in view of the above problems, and an object of the present invention is to facilitate supporting the stepladder on the ground in a better condition when supporting the stepladder, and to prevent the stepladder from tipping over more reliably. The purpose is to provide a fall prevention device.

本願に開示する脚立用転倒防止具は、棒状の支持部材(10)と、取付部材(20)と、連結機構(30)とを具備する。前記取付部材(20)は、前記支持部材(10)を脚立(100)に取付ける。前記連結機構(30)は、前記取付部材(20)に前記支持部材(10)を二軸方向(X1、X2)に回動可能に連結する。 The fall prevention tool for a stepladder disclosed in the present application includes a rod-shaped support member (10), a mounting member (20), and a connecting mechanism (30). The mounting member (20) mounts the support member (10) to the stepladder (100). The connecting mechanism (30) rotatably connects the support member (10) to the mounting member (20) in the biaxial directions (X1, X2).

本願に開示する脚立用転倒防止具において、前記連結機構(30)は、固定機構(40)を有する。前記固定機構(40)は、前記取付部材(20)に対し前記支持部材(10)を回動不可能に固定するものであり、軸孔部材(41)と、第1回動軸(42)と、第2回動軸(43)とを含む。前記軸孔部材(41)は、第1軸孔(41a)と、第2軸孔(41b)とを有する。前記第2軸孔(41b)は、前記第1軸孔(41a)と交差する方向に延びる。前記第1回動軸(42)は、前記第1軸孔(41a)に挿通され、前記軸孔部材(41)を前記取付部材(20)に対し回動可能に軸支する。前記第2回動軸(43)は、前記第2軸孔(41b)に挿通され、前記支持部材(10)を前記軸孔部材(41)に対し回動可能に軸支する。そして、前記固定機構(40)は、前記取付部材(20)に対し前記軸孔部材(41)を回動不可能に固定し、前記軸孔部材(41)に対し前記支持部材(10)を回動不可能に固定する。 In the stepladder fall prevention device disclosed in the present application, the connecting mechanism (30) has a fixing mechanism (40). The fixing mechanism (40) non-rotatably fixes the support member (10) to the mounting member (20), and the shaft hole member (41) and the first rotating shaft (42). And the second rotation shaft (43). The shaft hole member (41) has a first shaft hole (41a) and a second shaft hole (41b). The second shaft hole (41b) extends in a direction intersecting with the first shaft hole (41a). The first rotating shaft (42) is inserted into the first shaft hole (41a), and the shaft hole member (41) is rotatably supported with respect to the mounting member (20). The second rotating shaft (43) is inserted into the second shaft hole (41b), and the support member (10) is rotatably supported with respect to the shaft hole member (41). Then, the fixing mechanism (40) non-rotatably fixes the shaft hole member (41) to the mounting member (20), and attaches the support member (10) to the shaft hole member (41). Fix it so that it cannot rotate.

本願に開示する脚立用転倒防止具において、前記軸孔部材(41)は、一対の被締付部(46)と、割締め本体部(47)とを有する。前記一対の被締付部(46)は、前記第1軸孔(41a)が形成されており、所定の隙間を置いて対向配置される。前記割締め本体部(47)は、前記第2軸孔(41b)が形成されており、前記一対の被締付部(46)に対する締付けによって、前記第2回動軸(43)を回動不可能に固定する。また、前記固定機構(40)は、前記第1回動軸(42)に形成される雄ネジ部(42a)と、締付部材(44)と、レバー部材(45)とを含む。前記締付部材(44)は、前記雄ネジ部(42a)と螺合し、前記一対の被締付部(46)を締付ける。前記レバー部材(45)は、前記第1回動軸(42)と回転操作可能に連結される。 In the stepladder fall prevention tool disclosed in the present application, the shaft hole member (41) has a pair of tightened portions (46) and a split tightening main body portion (47). The pair of tightened portions (46) are formed with the first shaft hole (41a), and are arranged so as to face each other with a predetermined gap. The second shaft hole (41b) is formed in the split tightening main body portion (47), and the second rotation shaft (43) is rotated by tightening the pair of tightened portions (46). Fix it impossible. Further, the fixing mechanism (40) includes a male screw portion (42a) formed on the first rotation shaft (42), a tightening member (44), and a lever member (45). The tightening member (44) is screwed with the male screw portion (42a) to tighten the pair of tightened portions (46). The lever member (45) is rotatably connected to the first rotation shaft (42).

本発明の脚立用転倒防止具は、脚立を補助的に支える際に、より良い状態の地面で支えることを容易にし、脚立の転倒をより確実に防止できる。 The fall prevention tool for a stepladder of the present invention makes it easy to support the stepladder on the ground in a better condition when supporting the stepladder, and can prevent the stepladder from falling more reliably.

本発明の実施形態に係る脚立用転倒防止具を示す斜視図である。It is a perspective view which shows the fall prevention tool for a stepladder which concerns on embodiment of this invention. 本発明の実施形態に係る取付部材を示す正面図である。It is a front view which shows the attachment member which concerns on embodiment of this invention. 図1の脚立用転倒防止具を示す側面図である。It is a side view which shows the fall prevention tool for a stepladder of FIG. 図1の脚立用転倒防止具を示す正面図である。It is a front view which shows the fall prevention tool for a stepladder of FIG. 図3のA−A線断面図である。FIG. 3 is a cross-sectional view taken along the line AA of FIG. (a)本発明の実施形態に係る軸孔部材を示す正面図である。(b)図6(a)のB−B線断面図である。(c)本発明の実施形態に係る軸孔部材を示す側面図である。(A) It is a front view which shows the shaft hole member which concerns on embodiment of this invention. (B) is a cross-sectional view taken along the line BB of FIG. 6 (a). (C) It is a side view which shows the shaft hole member which concerns on embodiment of this invention. 図4とは別の状態の脚立用転倒防止具を示す正面図である。It is a front view which shows the fall prevention tool for a stepladder in a state different from FIG.

以下、本発明の実施形態に係る脚立用転倒防止具を図面に基づいて詳しく説明する。なお、以下に説明する実施形態は、本発明を実施するのに好ましい具体例であるから、技術的に種々の限定がなされているが、本発明は、以下の説明において特に発明を限定する旨が明記されていない限り、この実施形態に限定されるものではない。 Hereinafter, the fall prevention tool for stepladders according to the embodiment of the present invention will be described in detail with reference to the drawings. Since the embodiments described below are preferable specific examples for carrying out the present invention, various technical restrictions are made, but the present invention particularly limits the invention in the following description. Is not limited to this embodiment unless otherwise specified.

〈実施形態〉
図1〜図4を参照して、本発明の実施形態に係る脚立用転倒防止具を説明する。図1は、実施形態に係る脚立用転倒防止具を示す斜視図である。図2は、実施形態に係る取付部材を示す正面図である。図3は、図1の脚立用転倒防止具を示す側面図である。図4は、図1の脚立用転倒防止具を示す正面図である。
<Embodiment>
A fall prevention tool for a stepladder according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view showing a fall prevention tool for a stepladder according to an embodiment. FIG. 2 is a front view showing the mounting member according to the embodiment. FIG. 3 is a side view showing the fall prevention tool for the stepladder of FIG. FIG. 4 is a front view showing the fall prevention tool for the stepladder of FIG.

図1に示すように、実施形態に係る脚立用転倒防止具は、脚立100の転倒を防止するように、脚立100を補助的に支持するものであり、棒状の支持部材10と、取付部材20と、連結機構30とを具備する。図示例の脚立100は、縦材である支柱101と、横材である踏桟102と、脚立100を開閉する回転金具103と、開き止め金具104と、天板105とを具備する。 As shown in FIG. 1, the fall prevention tool for a stepladder according to the embodiment assists the stepladder 100 so as to prevent the stepladder 100 from falling, and includes a rod-shaped support member 10 and a mounting member 20. And a connecting mechanism 30. The stepladder 100 in the illustrated example includes a support column 101 which is a vertical member, a tread 102 which is a horizontal member, a rotary metal fitting 103 which opens and closes the stepladder 100, an opening stopper 104, and a top plate 105.

支持部材10は、実施形態においては、長さを調節可能に構成されており、大径角パイプ状の支持部材本体11と、小径角パイプ状の伸縮部12と、伸縮部12を固定する留具13とを含む。 In the embodiment, the support member 10 is configured so that the length can be adjusted, and the support member main body 11 having a large diameter square pipe shape, the expansion / contraction portion 12 having a small diameter square pipe shape, and the fastener for fixing the expansion / contraction portion 12 are fixed. Including tool 13.

支持部材本体11の上端は、連結機構30によって、取付部材20に連結される。また、支持部材本体11の下端は、伸縮部12を挿入可能に開口されている。 The upper end of the support member main body 11 is connected to the mounting member 20 by the connecting mechanism 30. Further, the lower end of the support member main body 11 is opened so that the telescopic portion 12 can be inserted.

伸縮部12は、支持部材本体11の下端開口を介し長手方向に移動自在に支持部材本体11の内部に嵌挿される。支持部材本体11の下端開口から伸縮部12が突出する突出長さを調節することによって、支持部材10の全長が調節される。また、伸縮部12の下端部には、地面に当接される足部12aが角度を調節可能に取付けられている。 The telescopic portion 12 is fitted and inserted into the support member main body 11 so as to be movable in the longitudinal direction via the lower end opening of the support member main body 11. The total length of the support member 10 is adjusted by adjusting the protruding length of the telescopic portion 12 protruding from the lower end opening of the support member main body 11. Further, a foot portion 12a that comes into contact with the ground is attached to the lower end portion of the telescopic portion 12 so that the angle can be adjusted.

留具13は、実施形態においては、摘みを有する雄ネジであり、支持部材本体11の外側から内側に向かって捩じ込まれ、支持部材本体11に対し移動不可能に伸縮部12を固定する。 In the embodiment, the fastener 13 is a male screw having a knob, and is screwed in from the outside to the inside of the support member main body 11 to immovably fix the telescopic portion 12 to the support member main body 11. ..

取付部材20は、図1に示すように、支持部材10を脚立100に取付けるものであり、実施形態においては、取付部材20は、4本の支柱101のうちの1本の支柱101の上部に、支持部材10の上端を取付ける。 As shown in FIG. 1, the mounting member 20 mounts the support member 10 to the stepladder 100, and in the embodiment, the mounting member 20 is mounted on the upper part of one of the four columns 101. , Attach the upper end of the support member 10.

また、図2に示すように、取付部材20は、支持部材10が連結される被連結部21と、脚立100の支柱101を把持する把持部22とを有している。 Further, as shown in FIG. 2, the mounting member 20 has a connected portion 21 to which the support member 10 is connected and a grip portion 22 that grips the support column 101 of the stepladder 100.

取付部材20の被連結部21は、後述の軸孔部材41を軸支するための一対の軸受片21aを有している。一対の軸受片21aには、後述の第1回動軸42が挿通される挿通孔21bが各々形成されている。軸孔部材41は、一対の軸受片21aの間に配置され、第1回動軸42によって、取付部材20に回動可能に軸支される。 The connected portion 21 of the mounting member 20 has a pair of bearing pieces 21a for axially supporting the shaft hole member 41 described later. The pair of bearing pieces 21a are formed with insertion holes 21b through which the first rotation shaft 42, which will be described later, is inserted. The shaft hole member 41 is arranged between the pair of bearing pieces 21a, and is rotatably supported by the mounting member 20 by the first rotating shaft 42.

取付部材20の把持部22は、対向配置される固定片23及び可動片24と、可動片24を押圧するネジ式の可動片押圧部25と、支柱101を押圧するネジ式の支柱押圧部26とを有する。可動片押圧部25が可動片24を押圧する方向と、支柱押圧部26が支柱101を押圧する方向とは直交しており、把持部22は、二軸方向で支柱101を把持し、取付部材20を支柱101に固定する。また、把持部22には、ウレタン等の緩衝部材27が適宜位置に配設される。 The gripping portion 22 of the mounting member 20 includes a fixed piece 23 and a movable piece 24 that are arranged to face each other, a screw-type movable piece pressing portion 25 that presses the movable piece 24, and a screw-type strut pressing portion 26 that presses the strut 101. And have. The direction in which the movable piece pressing portion 25 presses the movable piece 24 and the direction in which the strut pressing portion 26 presses the strut 101 are orthogonal to each other, and the grip portion 22 grips the strut 101 in the biaxial direction and is a mounting member. 20 is fixed to the support column 101. Further, a cushioning member 27 such as urethane is appropriately arranged at a position on the grip portion 22.

実施形態において、固定片23と可動片24とは、支柱101を脚立100における左右方向に挟持し、取付部材20を支柱101に固定する。脚立100の左右方向とは、本明細書においては、回転金具103を中心として、脚立100が広げられたり、閉じられたりする方向(図4の左右方向)をいう。また、図2に示すように、固定片23と可動片24とは、支柱101を係止する係止片23a、24aを各々有している。 In the embodiment, the fixed piece 23 and the movable piece 24 sandwich the support column 101 in the left-right direction on the stepladder 100, and fix the mounting member 20 to the support column 101. In the present specification, the left-right direction of the stepladder 100 means a direction in which the stepladder 100 is opened or closed (left-right direction in FIG. 4) with the rotating metal fitting 103 as the center. Further, as shown in FIG. 2, the fixed piece 23 and the movable piece 24 each have locking pieces 23a and 24a for locking the support column 101.

取付部材20の可動片押圧部25は、ハンドル25aと、雄ネジを有する軸部25bと、支持部25cと、板状の当接部25dとを含む。支持部25cは、軸部25bの雄ネジと螺合する雌ネジを有する。ハンドル25aが所定方向に回転されることによって、当接部25dが可動片24を押圧し、可動片24と固定片23とによって支柱101が挟持される。 The movable piece pressing portion 25 of the mounting member 20 includes a handle 25a, a shaft portion 25b having a male screw, a support portion 25c, and a plate-shaped contact portion 25d. The support portion 25c has a female screw that is screwed with the male screw of the shaft portion 25b. When the handle 25a is rotated in a predetermined direction, the contact portion 25d presses the movable piece 24, and the support column 101 is sandwiched between the movable piece 24 and the fixed piece 23.

取付部材20の支柱押圧部26は、ハンドル26aと、雄ネジを有する軸部26bと、支持部26cと、板状の当接部26dとを含む。支持部26cは、軸部26bの雄ネジと螺合する雌ネジを有する。ハンドル26aが所定方向に回転されることによって、当接部26dが、係止片23a、24aに向かって支柱101を押圧し、係止片23a、24aと当接部26dとによって支柱101が挟持される。 The support column pressing portion 26 of the mounting member 20 includes a handle 26a, a shaft portion 26b having a male screw, a support portion 26c, and a plate-shaped contact portion 26d. The support portion 26c has a female screw that is screwed with the male screw of the shaft portion 26b. When the handle 26a is rotated in a predetermined direction, the contact portion 26d presses the support column 101 toward the locking pieces 23a and 24a, and the support column 101 is sandwiched between the locking pieces 23a and 24a and the contact portion 26d. Will be done.

連結機構30は、二軸方向に回動可能に支持部材10を取付部材20に連結する。二軸方向とは、実施形態においては、図3に示す第1方向X1と、図4に示す第2方向X2である。 The connecting mechanism 30 connects the support member 10 to the mounting member 20 so as to be rotatable in the biaxial direction. In the embodiment, the biaxial directions are the first direction X1 shown in FIG. 3 and the second direction X2 shown in FIG.

図3に示すように、第1方向X1は、脚立100の前後方向(図3の左右方向)に沿った方向である。脚立100の前後方向とは、本明細書においては、脚立100の左右方向に直交し、且つ地面に沿った方向である。図3に示すように、第1方向X1に支持部材10が回動されることによって、脚立100の前後方向における足部12aの位置が移動し、地面Gに対する支持部材10の支持角度αが調節される。支持角度αは、75度以上、90度未満の角度に調節されることが好ましい。 As shown in FIG. 3, the first direction X1 is a direction along the front-rear direction (horizontal direction in FIG. 3) of the stepladder 100. In the present specification, the front-back direction of the stepladder 100 is a direction orthogonal to the left-right direction of the stepladder 100 and along the ground. As shown in FIG. 3, by rotating the support member 10 in the first direction X1, the position of the foot portion 12a in the front-rear direction of the stepladder 100 moves, and the support angle α of the support member 10 with respect to the ground G is adjusted. Will be done. The support angle α is preferably adjusted to an angle of 75 degrees or more and less than 90 degrees.

また、図4に示すように、第2方向X2は、脚立100の左右方向に沿った方向である。第2方向X2に支持部材10が回動されることによって、脚立100の左右方向における足部12aの位置が調節される。 Further, as shown in FIG. 4, the second direction X2 is a direction along the left-right direction of the stepladder 100. By rotating the support member 10 in the second direction X2, the position of the foot portion 12a in the left-right direction of the stepladder 100 is adjusted.

なお、図2に示す取付部材20において、支柱101が押付けられる、固定片23の内側面23bと、一対の軸受片21aの中間位置との間隔Dは、120〜160ミリメートルであることが好ましく、130〜145ミリメートルであることがより好ましく、135〜140ミリメートルであることが更に好ましい。間隔Dを上記の数値範囲に設定することによって、図4に示すように、一般的な脚立100の左右方向における中央位置の近傍に、第2方向X2における支持部材10の回動中心を設置することができ、より安定的に脚立100を支持できる。 In the mounting member 20 shown in FIG. 2, the distance D between the inner side surface 23b of the fixing piece 23 to which the support column 101 is pressed and the intermediate position between the pair of bearing pieces 21a is preferably 120 to 160 mm. It is more preferably 130 to 145 mm, and even more preferably 135 to 140 mm. By setting the interval D to the above numerical range, as shown in FIG. 4, the rotation center of the support member 10 in the second direction X2 is installed near the center position in the left-right direction of the general stepladder 100. It is possible to support the stepladder 100 more stably.

以上、図1〜図4を参照して説明したように、実施形態の脚立用転倒防止具によれば、連結機構30が、第1方向X1、及び第2方向X2の二軸方向に回動可能に支持部材10を取付部材20に連結する。従って、作業を行うのに最適な位置と向きに脚立100を設置した状態において、支持部材10の下端部が当接する地面Gの位置を自由に選定することができ、地面Gが、部分的に軟弱であったり、部分的に傾斜していたりするような場合にも、より良い状態の地面Gで脚立100を支えることを容易にし、脚立の転倒をより確実に防止できる。 As described above with reference to FIGS. 1 to 4, according to the stepladder fall prevention tool of the embodiment, the connecting mechanism 30 rotates in the biaxial directions of the first direction X1 and the second direction X2. The support member 10 is connected to the mounting member 20 as much as possible. Therefore, in a state where the stepladder 100 is installed at the optimum position and orientation for performing the work, the position of the ground G with which the lower end portion of the support member 10 abuts can be freely selected, and the ground G partially becomes. Even when the stepladder is soft or partially inclined, it is easy to support the stepladder 100 with the ground G in a better state, and the stepladder can be prevented from falling more reliably.

次に、図5〜図7を参照して、本発明の他の実施形態を説明する。図5は、図3のA−A線断面図である。図6(a)は、実施形態に係る軸孔部材を示す正面図である。図6(b)は、図6(a)のB−B線断面図である。図6(c)は、実施形態に係る軸孔部材を示す側面図である。図7は、図4とは別の状態の脚立用転倒防止具を示す正面図である。 Next, other embodiments of the present invention will be described with reference to FIGS. 5 to 7. FIG. 5 is a cross-sectional view taken along the line AA of FIG. FIG. 6A is a front view showing a shaft hole member according to the embodiment. FIG. 6B is a cross-sectional view taken along the line BB of FIG. 6A. FIG. 6C is a side view showing the shaft hole member according to the embodiment. FIG. 7 is a front view showing a fall prevention device for a stepladder in a state different from that of FIG.

図5に示すように、実施形態に係る連結機構30は、取付部材20に対し支持部材10を回動不可能に固定する固定機構40を有している。固定機構40は、軸孔部材41と、第1回動軸42と、第2回動軸43と、締付部材44と、レバー部材45とを含む。軸孔部材41は、上述したとおり、一対の軸受片21aの間に配置され、第1回動軸42によって、一対の軸受片21aを介し取付部材20に回動可能に軸支される。 As shown in FIG. 5, the connecting mechanism 30 according to the embodiment has a fixing mechanism 40 that rotatably fixes the support member 10 to the mounting member 20. The fixing mechanism 40 includes a shaft hole member 41, a first rotating shaft 42, a second rotating shaft 43, a tightening member 44, and a lever member 45. As described above, the shaft hole member 41 is arranged between the pair of bearing pieces 21a, and is rotatably supported by the first rotating shaft 42 on the mounting member 20 via the pair of bearing pieces 21a.

図6に示すように、軸孔部材41は、第1軸孔41aと、第2軸孔41bとを有する。第2軸孔41bは、第1軸孔41aと交差する方向に延びている。なお、実施形態においては、第2軸孔41bは、第1軸孔41aに対し直交する方向に延びている。ここで、「直交する方向」とは、10度程度までの誤差がある場合を含む。 As shown in FIG. 6, the shaft hole member 41 has a first shaft hole 41a and a second shaft hole 41b. The second shaft hole 41b extends in a direction intersecting the first shaft hole 41a. In the embodiment, the second shaft hole 41b extends in a direction orthogonal to the first shaft hole 41a. Here, the "orthogonal direction" includes a case where there is an error of up to about 10 degrees.

また、軸孔部材41は、一対の被締付部46と、割締め本体部47とを有している。一対の被締付部46は、第1軸孔41aが形成されており、所定の隙間を置いて対向配置される。割締め本体部47は、第2軸孔41bが形成されており、一対の被締付部46に対する締付けによって、第2回動軸43を回動不可能に固定する。 Further, the shaft hole member 41 has a pair of tightened portions 46 and a split tightening main body portion 47. The pair of tightened portions 46 are formed with a first shaft hole 41a and are arranged so as to face each other with a predetermined gap. The split tightening main body 47 is formed with a second shaft hole 41b, and the second rotating shaft 43 is non-rotatably fixed by tightening the pair of tightened portions 46.

第1回動軸42は、図5に示すように、先端側に雄ネジ部42aが形成され、基端側にレバー部材45が回転操作可能に連結されており、割締めボルトとして機能する。 As shown in FIG. 5, the first rotating shaft 42 has a male screw portion 42a formed on the tip end side and a lever member 45 rotatably connected to the base end side, and functions as a split tightening bolt.

第2回動軸43は、図5に示すように、支持部材本体11の上端部に、固定金具14によって、支持部材10に対し回動不可能に固定されている。 As shown in FIG. 5, the second rotating shaft 43 is non-rotatably fixed to the support member 10 by the fixing metal fitting 14 at the upper end of the support member main body 11.

締付部材44は、第1回動軸42の雄ネジ部42aと螺合し、レバー部材45に対する回転操作によって、一対の軸受片21aを介し一対の被締付部46を締付ける。実施形態においては、締付部材44は、ナットから形成される。一対の被締付部46が、一対の軸受片21aを介し締付けられることによって、軸孔部材41が一対の軸受片21aに固定され、取付部材20に対し軸孔部材41が回動不可能に固定される。また、一対の被締付部46が締付けられることによって、第2軸孔41bの径が小さくなり、第2回動軸43が軸孔部材41に対し回動不可能に固定され、支持部材10が軸孔部材41に対し回動不可能に固定される。 The tightening member 44 is screwed with the male screw portion 42a of the first rotating shaft 42, and the pair of tightened portions 46 is tightened via the pair of bearing pieces 21a by the rotational operation of the lever member 45. In an embodiment, the tightening member 44 is formed from a nut. By tightening the pair of tightened portions 46 via the pair of bearing pieces 21a, the shaft hole member 41 is fixed to the pair of bearing pieces 21a, and the shaft hole member 41 cannot rotate with respect to the mounting member 20. It is fixed. Further, by tightening the pair of tightened portions 46, the diameter of the second shaft hole 41b becomes smaller, the second rotating shaft 43 is fixed to the shaft hole member 41 so as not to rotate, and the support member 10 Is non-rotatably fixed to the shaft hole member 41.

また、図7に示すように、脚立100の使用を終了する際には、例えば面ファスナテープ106によって支持部材10が支柱101に固定される。支持部材10が支柱101に固定されることによって、脚立100に脚立用転倒防止具を取付けたままコンパクトな形状にまとめることができ、比較的小さな収納スペースに脚立100を収納できる。また、脚立100を再び使用するときには、脚立用転倒防止具の取付作業を行うことなく、脚立用転倒防止具によって直ちに脚立100を支持できる。 Further, as shown in FIG. 7, when the use of the stepladder 100 is finished, the support member 10 is fixed to the support column 101 by, for example, the hook-and-loop fastener tape 106. By fixing the support member 10 to the support column 101, the stepladder 100 can be put together in a compact shape with the stepladder fall prevention device attached to the stepladder 100, and the stepladder 100 can be stored in a relatively small storage space. Further, when the stepladder 100 is used again, the stepladder 100 can be immediately supported by the stepladder fall prevention tool without attaching the stepladder fall prevention tool.

以上、図5〜図7を参照して説明したように、実施形態の脚立用転倒防止具によれば、固定機構40が、軸孔部材41と、第1回動軸42と、第2回動軸43とを含み、軸孔部材41が、第1軸孔41aと、第1軸孔41aと交差する方向に延びる第2軸孔41bとを有する。従って、軸孔部材41を媒介とする簡易な機構によって、支持部材10を取付部材20に対し二軸方向に回動可能に支持でき、機構を簡略化でき、コスト上昇を抑えることができる。 As described above with reference to FIGS. 5 to 7, according to the stepladder fall prevention tool of the embodiment, the fixing mechanism 40 includes the shaft hole member 41, the first rotating shaft 42, and the second rotation. The shaft hole member 41 includes a moving shaft 43, and has a first shaft hole 41a and a second shaft hole 41b extending in a direction intersecting the first shaft hole 41a. Therefore, the support member 10 can be rotatably supported with respect to the mounting member 20 by a simple mechanism mediated by the shaft hole member 41, the mechanism can be simplified, and the cost increase can be suppressed.

また、実施形態の脚立用転倒防止具によれば、固定機構40の軸孔部材41が、一対の被締付部46と、割締め本体部47とを有し、割締めボルトとしての第1回動軸42に対する回転操作によって、支持部材10を取付部材20に対し回動不可能に固定できる。従って、レバー部材45によるワンタッチの操作によって、二軸方向に回動可能とされた支持部材10を固定でき、操作性を向上させることができる。 Further, according to the fall prevention tool for stepladders of the embodiment, the shaft hole member 41 of the fixing mechanism 40 has a pair of tightened portions 46 and a split tightening main body portion 47, and is the first as a split tightening bolt. By rotating the rotating shaft 42, the support member 10 can be fixed to the mounting member 20 so as not to rotate. Therefore, by one-touch operation by the lever member 45, the support member 10 that can be rotated in the biaxial direction can be fixed, and the operability can be improved.

以上、図面(図1〜図7)を参照しながら本発明の実施形態を説明した。但し、本発明は、上記の実施形態に限られるものではなく、その要旨を逸脱しない範囲で種々の態様において実施することが可能である。 The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 7). However, the present invention is not limited to the above-described embodiment, and can be implemented in various embodiments without departing from the gist thereof.

100…脚立
101…支柱
10…支持部材
20…取付部材
30…連結機構
40…固定機構
41…軸孔部材
41a…第1軸孔
41b…第2軸孔
42…第1回動軸
42a…雄ネジ部
43…第2回動軸
44…締付部材
45…レバー部材
46…被締付部
47…割締め本体部
100 ... Stepladder 101 ... Support 10 ... Support member 20 ... Mounting member 30 ... Connecting mechanism 40 ... Fixing mechanism 41 ... Shaft hole member 41a ... First shaft hole 41b ... Second shaft hole 42 ... First rotating shaft 42a ... Male screw Part 43 ... Second rotation shaft 44 ... Tightening member 45 ... Lever member 46 ... Tightened part 47 ... Split tightening main body

Claims (3)

棒状の支持部材(10)と、
前記支持部材(10)を脚立(100)に取付ける取付部材(20)と、
前記支持部材(10)を前記取付部材(20)に二軸方向(X1、X2)に回動可能に連結する連結機構(30)
とを具備する脚立用転倒防止具。
Rod-shaped support member (10) and
A mounting member (20) for mounting the support member (10) to the stepladder (100),
A connecting mechanism (30) that rotatably connects the support member (10) to the mounting member (20) in the biaxial directions (X1, X2).
A fall prevention device for stepladders equipped with.
前記連結機構(30)は、前記取付部材(20)に対し前記支持部材(10)を回動不可能に固定する固定機構(40)を有し、
前記固定機構(40)は、
第1軸孔(41a)と、前記第1軸孔(41a)と交差する方向に延びる第2軸孔(41b)とを有する軸孔部材(41)と、
前記第1軸孔(41a)に挿通され、前記軸孔部材(41)を前記取付部材(20)に対し回動可能に軸支する第1回動軸(42)と、
前記第2軸孔(41b)に挿通され、前記支持部材(10)を前記軸孔部材(41)に対し回動可能に軸支する第2回動軸(43)
とを含み、
前記取付部材(20)に対し前記軸孔部材(41)を回動不可能に固定し、前記軸孔部材(41)に対し前記支持部材(10)を回動不可能に固定する、請求項1に記載の脚立用転倒防止具。
The connecting mechanism (30) has a fixing mechanism (40) that non-rotatably fixes the support member (10) to the mounting member (20).
The fixing mechanism (40)
A shaft hole member (41) having a first shaft hole (41a) and a second shaft hole (41b) extending in a direction intersecting the first shaft hole (41a).
A first rotating shaft (42) that is inserted through the first shaft hole (41a) and rotatably supports the shaft hole member (41) with respect to the mounting member (20).
A second rotating shaft (43) that is inserted through the second shaft hole (41b) and rotatably supports the support member (10) with respect to the shaft hole member (41).
Including and
The claim that the shaft hole member (41) is non-rotatably fixed to the mounting member (20), and the support member (10) is non-rotatably fixed to the shaft hole member (41). The fall prevention tool for stepladders according to 1.
前記軸孔部材(41)は、前記第1軸孔(41a)が形成され、所定の隙間を置いて対向配置される一対の被締付部(46)と、前記第2軸孔(41b)が形成され、前記一対の被締付部(46)に対する締付けによって、前記第2回動軸(43)を回動不可能に固定する割締め本体部(47)とを有し、
前記固定機構(40)は、前記第1回動軸(42)に形成される雄ネジ部(42a)と、前記雄ネジ部(42a)と螺合し、前記一対の被締付部(46)を締付ける締付部材(44)と、前記第1回動軸(42)と回転操作可能に連結されるレバー部材(47)とを含む、請求項2に記載の脚立用転倒防止具。
The shaft hole member (41) has a pair of tightened portions (46) on which the first shaft hole (41a) is formed and arranged to face each other with a predetermined gap, and the second shaft hole (41b). Is formed, and has a split tightening main body portion (47) for fixing the second rotating shaft (43) non-rotatably by tightening the pair of tightened portions (46).
The fixing mechanism (40) is screwed into the male screw portion (42a) formed on the first rotation shaft (42) and the male screw portion (42a), and the pair of tightened portions (46) are screwed together. The fall prevention tool for a stepladder according to claim 2, further comprising a tightening member (44) for tightening the first rotation shaft (42) and a lever member (47) rotatably connected to the first rotation shaft (42).
JP2019211409A 2019-11-22 2019-11-22 Fall prevention device for stepladder Active JP7268866B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4850337U (en) * 1971-10-13 1973-07-02
JPH03113099U (en) * 1990-03-05 1991-11-19
JPH0536000U (en) * 1991-10-16 1993-05-18 正春 貫井 Fall prevention device for stepladder
JP3058599U (en) * 1998-10-21 1999-06-18 正次 佐田野 Ladder with support
US20110017549A1 (en) * 2009-07-27 2011-01-27 Lietz James D Stabilizer kit for providing reinforcing support to a ladder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4850337U (en) * 1971-10-13 1973-07-02
JPH03113099U (en) * 1990-03-05 1991-11-19
JPH0536000U (en) * 1991-10-16 1993-05-18 正春 貫井 Fall prevention device for stepladder
JP3058599U (en) * 1998-10-21 1999-06-18 正次 佐田野 Ladder with support
US20110017549A1 (en) * 2009-07-27 2011-01-27 Lietz James D Stabilizer kit for providing reinforcing support to a ladder

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