JP7268866B2

JP7268866B2 - Fall prevention device for stepladder

Info

Publication number: JP7268866B2
Application number: JP2019211409A
Authority: JP
Inventors: 敦司杉野
Original assignee: スクロジマーケティング株式会社
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2023-05-08
Anticipated expiration: 2039-11-22
Also published as: JP2021080803A

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。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stepladder toppling prevention device, and more particularly to a stepladder toppling prevention device for supporting a 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 stepladder overturn prevention tool for supporting a stepladder, Patent Document 1 describes a stepladder overturn prevention tool having a rod-shaped support member. In the fall prevention device for a stepladder described in Patent Document 1, the upper end of the support member is connected to the upper part of the support column of the stepladder, and the lower end of the support member is in contact with the ground, so that the support member prevents it from falling over. A stepladder is supported. The length and angle of the support member relative to the strut are adjustable, and the angle at which the support member supports the stepladder on the ground is adjustable.

実登第３００６９５６号公報Japanese Patent 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 stepladder overturn prevention tool described in Patent Document 1, when the stepladder is installed in the optimum position and orientation for working, the position of the ground on which the lower end of the support member abuts cannot be freely selected. There is such a problem. For example, in order to stably support the stepladder when the ground is partially soft or partially sloping at the position where the lower end of the support member abuts, the support member It is necessary to change the position of 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 stepladder overturn prevention tool described in Patent Document 1, the position of the ground with which the lower end of the support member abuts cannot be freely selected, and the stepladder is installed in the optimum position and orientation for work. Then, it may become impossible to support the stepladder stably.

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。 SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and its object is to make it easier to support the stepladder on the ground in a better condition and to more reliably prevent the stepladder from overturning. To provide a fall prevention tool for a person.

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。 A stepladder overturn prevention device disclosed in the present application includes a rod-shaped support member (10), a mounting member (20), and a connecting mechanism (30). The attachment member (20) attaches the support member (10) to the stepladder (100). The connecting mechanism (30) connects the supporting member (10) to the mounting member (20) so as to be rotatable in two axial 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 overturn 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 a second pivot 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 crossing the first shaft hole (41a). The first rotating shaft (42) is inserted through the first shaft hole (41a) and rotatably supports the shaft hole member (41) with respect to the mounting member (20). The second rotation shaft (43) is inserted through the second shaft hole (41b) and rotatably supports the support member (10) with respect to the shaft hole member (41). The fixing mechanism (40) non-rotatably fixes the shaft hole member (41) to the mounting member (20), and the support member (10) to the shaft hole member (41). Fixed 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 overturn prevention device disclosed in the present application, the shaft hole member (41) has a pair of clamped portions (46) and a split clamp body portion (47). The pair of clamped portions (46) are provided with the first shaft hole (41a) and are arranged to face each other with a predetermined gap therebetween. The split tightening body portion (47) is formed with the second shaft hole (41b), and the second rotating shaft (43) is rotated by tightening the pair of tightened portions (46). Impossible to fix. The fixing mechanism (40) also includes a male threaded portion (42a) formed on the first rotating shaft (42), a tightening member (44), and a lever member (45). The tightening member (44) is screwed into the male threaded portion (42a) to tighten the pair of tightened portions (46). The lever member (45) is rotatably connected to the first rotating 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。 INDUSTRIAL APPLICABILITY The fall prevention tool for a stepladder of the present invention makes it easier to support the stepladder on the ground in a better condition when supporting the stepladder in an auxiliary manner, and can more reliably prevent the stepladder from overturning.

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。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the fall prevention tool for stepladders 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 stepladders 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 stepladders of FIG. 図３のＡ－Ａ線断面図である。4 is a cross-sectional view taken along line AA of FIG. 3; 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 axial hole member which concerns on embodiment of this invention. 6(b) is a cross-sectional view taken along line BB of FIG. 6(a). (c) It is a side view which shows the axial 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。FIG. 5 is a front view showing the stepladder overturn prevention tool in a state different from that in FIG. 4 ;

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, a stepladder overturn prevention device according to an embodiment of the present invention will be described in detail with reference to the drawings. It should be noted that the embodiment described below is a preferred specific example for carrying out the present invention, and various technical limitations are made, but the present invention is particularly limited in the following description. is not limited to this embodiment unless 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 stepladder overturn prevention device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. FIG. 1 is a perspective view showing a stepladder overturn prevention tool 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 overturn prevention tool for the stepladder of FIG. 1. FIG. FIG. 4 is a front view showing the overturn 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 stepladder overturn prevention tool according to the embodiment supports the stepladder 100 so as to prevent the stepladder 100 from overturning. and a connecting mechanism 30 . A stepladder 100 in the illustrated example includes a post 101 that is a vertical member, a tread 102 that is a horizontal member, a rotating metal fitting 103 for opening and closing the stepladder 100 , an opening stop metal fitting 104 , and a top board 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 such that its length can be adjusted. 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 expandable 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 extendable portion 12 is inserted into the support member main body 11 through a lower end opening of the support member main body 11 so as to be freely movable in the longitudinal direction. The total length of the support member 10 is adjusted by adjusting the length of projection of the expandable portion 12 from the lower end opening of the support member main body 11 . A leg portion 12a that contacts the ground is attached to the lower end portion of the expandable portion 12 so that the angle thereof 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。 The fastener 13 is, in this embodiment, a male screw having a knob, which is screwed from the outside to the inside of the support member main body 11 to fix the expansion/contraction part 12 immovably 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。 The mounting member 20 is for mounting the support member 10 to the stepladder 100, as shown in FIG. , 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。 Moreover, as shown in FIG. 2 , the mounting member 20 has a connected portion 21 to which the support member 10 is connected, and a gripping portion 22 that grips the pillar 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 connecting portion 21 of the mounting member 20 has a pair of bearing pieces 21a for axially supporting a shaft hole member 41, which will be described later. The pair of bearing pieces 21a is formed with an insertion hole 21b through which a first rotating shaft 42, which will be described later, is inserted. The shaft hole member 41 is arranged between the pair of bearing pieces 21 a 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 grip portion 22 of the mounting member 20 includes a fixed piece 23 and a movable piece 24 that are arranged opposite to each other, a screw type movable piece pressing portion 25 that presses the movable piece 24, and a screw type column pressing portion 26 that presses the column 101. and The direction in which the movable piece pressing portion 25 presses the movable piece 24 and the direction in which the column pressing portion 26 presses the column 101 are perpendicular to each other, and the gripping portion 22 grips the column 101 in two axial directions, and the attachment member 20 is fixed to the strut 101 . A buffer member 27 made of urethane or the like is disposed at an appropriate 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 101 in the horizontal direction of the stepladder 100 and fix the mounting member 20 to the support 101 . In this specification, the left-right direction of the stepladder 100 refers to the direction in which the stepladder 100 is opened or closed around the rotating metal fitting 103 (left-right direction in FIG. 4). In addition, as shown in FIG. 2, the fixed piece 23 and the movable piece 24 have locking pieces 23a and 24a for locking the post 101, respectively.

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-like contact portion 25d. The support portion 25c has a female thread that engages with the male thread of the shaft portion 25b. By rotating the handle 25a in a predetermined direction, the contact portion 25d presses the movable piece 24, and the support 101 is sandwiched between the movable piece 24 and the fixed piece 23. As shown in FIG.

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 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-like contact portion 26d. The support portion 26c has a female thread that engages with the male thread of the shaft portion 26b. By rotating the handle 26a in a predetermined direction, the contact portion 26d presses the post 101 toward the locking pieces 23a and 24a, and the post 101 is sandwiched between the locking pieces 23a and 24a and the contact portion 26d. 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 two axial directions. The biaxial directions are the first direction X1 shown in FIG. 3 and the second direction X2 shown in FIG. 4 in the embodiment.

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 of the stepladder 100 (left-right direction in FIG. 3). In this specification, the front-rear 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 leg 12a of the stepladder 100 in the front-rear direction is moved, and the support angle α of the support member 10 with respect to the ground G is adjusted. 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。 Also, 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 leg portion 12a of the stepladder 100 in the left-right direction 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 surface 23b of the fixed piece 23 against which the support 101 is pressed and the intermediate position of the pair of bearing pieces 21a is preferably 120 to 160 mm. More preferably 130 to 145 millimeters, even more preferably 135 to 140 millimeters. By setting the distance D within the above numerical range, as shown in FIG. 4, the rotation center of the support member 10 in the second direction X2 is set in the vicinity of the central position of the general stepladder 100 in the left-right direction. and the stepladder 100 can be supported 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 overturn prevention device of the embodiment, the connection mechanism 30 rotates in two axial directions, that is, the first direction X1 and the second direction X2. The support member 10 can be connected to the mounting member 20 . Therefore, in a state in which the stepladder 100 is installed in the optimum position and orientation for working, the position of the ground G with which the lower end of the support member 10 abuts can be freely selected. Even if the ground is soft or partially inclined, the stepladder 100 can be easily supported on the ground G in better condition, and the stepladder can be prevented from overturning 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。 Another embodiment of the present invention will now be described with reference to FIGS. 5 is a cross-sectional view taken along the line AA of FIG. 3. FIG. Fig.6 (a) is a front view which shows the axial hole member which concerns on embodiment. FIG. 6(b) is a cross-sectional view taken along line BB of FIG. 6(a). FIG.6(c) is a side view which shows the axial hole member which concerns on embodiment. 7 is a front view of the stepladder overturn prevention device in a state different from that of FIG. 4. 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 fixes the support member 10 to the mounting member 20 so as not to rotate. 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 rotatably supported by the mounting member 20 via the pair of bearing pieces 21a by the first rotary shaft 42 .

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 crossing the first shaft hole 41a. In addition, in the embodiment, the second shaft hole 41b extends in a direction orthogonal to the first shaft hole 41a. Here, the "perpendicular direction" includes the 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 body portion 47 . The pair of clamped portions 46 are provided with a first shaft hole 41a and are arranged to face each other with a predetermined gap therebetween. The split tightening body portion 47 is formed with a second shaft hole 41b, and by tightening the pair of tightened portions 46, the second rotating shaft 43 is fixed so as not to be rotatable.

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 threaded portion 42a formed on the distal end side and a lever member 45 rotatably connected to the proximal 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 fixed to the upper end portion of the supporting member main body 11 by a fixing metal fitting 14 so as to be non-rotatable with respect to the supporting member 10 .

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 threaded portion 42a of the first rotating shaft 42, and by rotating the lever member 45, tightens the pair of tightened portions 46 via the pair of bearing pieces 21a. In embodiments, the clamping member 44 is formed from a nut. The pair of tightened portions 46 are tightened via the pair of bearing pieces 21a, whereby 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. Fixed. Further, by tightening the pair of tightened portions 46, the diameter of the second shaft hole 41b is reduced, and the second rotating shaft 43 is fixed to the shaft hole member 41 so as not to rotate. 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 post 101 by hook-and-loop fastener tape 106, for example. By fixing the support member 10 to the post 101, the stepladder 100 can be compacted with the overturning prevention tool for the stepladder attached, and the stepladder 100 can be stored in a relatively small storage space. Further, when the stepladder 100 is to be used again, the stepladder 100 can be immediately supported by the stepladder overturn prevention tool without performing the installation work of the stepladder overturn 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 overturn prevention device of the embodiment, the fixing mechanism 40 includes the shaft hole member 41, the first rotation shaft 42, and the second rotation shaft. The shaft hole member 41 has a first shaft hole 41a and a second shaft hole 41b extending in a direction intersecting the first shaft hole 41a. Therefore, the supporting member 10 can be biaxially rotatably supported with respect to the mounting member 20 by a simple mechanism using the shaft hole member 41, the mechanism can be simplified, and an increase in cost 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 stepladder overturn prevention device of the embodiment, the shaft hole member 41 of the fixing mechanism 40 has a pair of clamped portions 46 and the split clamp main body portion 47, and the first split bolt as the split clamp bolt. By rotating the rotating shaft 42 , the support member 10 can be non-rotatably fixed to the mounting member 20 . Therefore, the one-touch operation of the lever member 45 can fix the support member 10 that is rotatable in two axial directions, thereby improving the operability.

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 embodiments, and can be implemented in various aspects without departing from the gist of the present invention.

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 DESCRIPTION OF SYMBOLS 100... Stepladder 101... Supporting member 20... Mounting member 30... Connection 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 rotating shaft 44... Tightening member 45... Lever member 46... Tightened part 47... Split clamp main body

Claims

a rod-shaped support member (10);
an attachment member (20) for attaching the support member (10) to a stepladder (100);
A connection mechanism (30) for connecting the support member (10) to the mounting member (20) so as to be rotatable in two axial directions (X1, X2).
and
The connecting mechanism (30) has a fixing mechanism (40) for fixing the supporting member (10) to the mounting member (20) in a non-rotatable manner,
The fixing mechanism (40) is
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 rotation shaft (42) inserted through the first shaft hole (41a) to rotatably support the shaft hole member (41) with respect to the mounting member (20);
A second rotation shaft (43) inserted through the second shaft hole (41b) to rotatably support the support member (10) with respect to the shaft hole member (41).
and
For a stepladder, wherein 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). Anti-tip device.

The shaft hole member (41) has the first shaft hole (41a) formed therein, and includes a pair of clamped portions (46) arranged opposite to each other with a predetermined gap therebetween, and the second shaft hole (41b). is formed, and has a split tightening main body portion (47) that fixes the second rotating shaft (43) in a non-rotatable manner by tightening the pair of tightened portions (46),
The fixing mechanism (40) includes a male threaded portion (42a) formed on the first rotating shaft (42) and a screwing engagement with the male threaded portion (42a) to form the pair of clamped portions (46). ), and a lever member ( 47 ) rotatably connected to said first pivot shaft (42).