JP2000189530A - Fall preventing device for eminence work - Google Patents
Fall preventing device for eminence workInfo
- Publication number
- JP2000189530A JP2000189530A JP10370634A JP37063498A JP2000189530A JP 2000189530 A JP2000189530 A JP 2000189530A JP 10370634 A JP10370634 A JP 10370634A JP 37063498 A JP37063498 A JP 37063498A JP 2000189530 A JP2000189530 A JP 2000189530A
- Authority
- JP
- Japan
- Prior art keywords
- locking claw
- locking
- lifeline
- rotation
- outward
- 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.)
- Granted
Links
Landscapes
- Emergency Lowering Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高所作業用墜落防
止器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fall prevention device for working at height.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】本出願
人は、実用新案登録第２５７３４４８号により高所作業
用墜落防止器（以下、従来例という。）を提案してい
る。2. Description of the Related Art The applicant of the present invention has proposed a fall arrester for working at heights (hereinafter referred to as a conventional example) according to Japanese Utility Model Registration No. 2573448.
【０００３】この従来例は、高所で作業する作業者が万
一足を踏み外して墜落したとき、この墜落を阻止して作
業者の人命を守ることができるものとして極めて画期的
である。[0003] This conventional example is extremely epoch-making in that when a worker working at a high place falls down by stepping off, the fall can be prevented and the life of the worker can be protected.
【０００４】具体的に説明すると、この従来例は、巻取
器２を建物の所望の位置に吊り下げ、巻取器２の下部に
設けた命綱１の出入り口部２ｂより巻取回動体３に巻回
された命綱１を引き出し、先端の取付フック９を作業者
のベルトの係止環などに係止して作業を行い、作業者が
万一足を踏み外して墜落すると、命綱１が急激に引き出
されて巻取回動体３が所定回転速度若しくは所定回転加
速度以上で回転するので、巻取回動体３と共に回動する
係止爪４の先端部が遠心力により弾性体６の弾性度に打
ち勝って係止爪ピン11を軸として外方に回動突出し、巻
取器２の内部に止着したラチェット内歯車体５の係止部
５ａで係止されて巻取回動体３の回転を停止し作業者の
墜落を防止することができる。More specifically, in this conventional example, the winder 2 is hung at a desired position in a building, and the winder 2 is attached to the winding rotary body 3 through an entrance 2b of a lifeline 1 provided below the winder 2. When the worker pulls out the wound lifeline 1 and locks the mounting hook 9 at the tip thereof to a locking ring of a worker's belt or the like to perform work, and the worker steps down and falls down, the lifeline 1 suddenly drops. Since the take-up rotating body 3 is pulled out and rotates at a predetermined rotational speed or a predetermined rotational acceleration or more, the tip of the locking claw 4 that rotates together with the take-up rotary body 3 overcomes the elasticity of the elastic body 6 due to centrifugal force. The rotation of the winding rotary member 3 is stopped by the locking portion 5a of the ratchet internal gear body 5 fixed to the inside of the winding device 2 by being projected outwardly by rotating the locking claw pin 11 as an axis. The worker can be prevented from falling.
【０００５】また、この従来例に係る係止爪４の係止部
５ａに対する係止状態を解除する場合には、一度命綱１
を巻き取らせるように巻取回動体３を回動させると、係
止爪４は弾性体６の弾性により元の位置に戻り回動する
ことになり、よって、係止爪４の係止部５ａに対する係
止状態を解除することができる。In order to release the locking state of the locking claw 4 according to the conventional example with respect to the locking portion 5a, once the lifeline 1
When the take-up rotating body 3 is rotated so as to take up, the locking claw 4 returns to its original position and rotates due to the elasticity of the elastic body 6, and thus the locking portion of the locking claw 4 The locked state with respect to 5a can be released.
【０００６】ところで、本出願人は、この従来例につい
て更なる研究開発を進めているうちに、巻取回動体３が
所定回転速度若しくは所定回転加速度以上で回動するよ
うに命綱１を巻き取りしたときにも係止爪４の先端部が
遠心力で外方に回動突出し、巻取回動体３の回動が停止
すると同時に、偶然にも、係止爪４が係止部５ａに係止
してしまう場合があることが判明した。Meanwhile, the applicant has taken up the lifeline 1 so that the winding rotary body 3 rotates at a predetermined rotation speed or a predetermined rotation acceleration or more while further researching and developing the conventional example. In this case, the distal end of the locking claw 4 pivotally protrudes outward due to centrifugal force, and the rotation of the winding rotary body 3 stops. At the same time, the locking claw 4 accidentally engages with the locking portion 5a. It turned out that it might stop.
【０００７】つまり、従来例は、命綱１を最後まで巻き
取らせたときに係止爪４が係止部５ａに係止した際、命
綱１はそれ以上巻き取ることができない状態であるが故
に係止爪４の係止部５ａに対する係止状態が解除できな
くなり使用できなくなるおそれがある。That is, in the prior art, when the locking claw 4 is locked on the locking portion 5a when the lifeline 1 is completely wound, the lifeline 1 cannot be further wound up. There is a possibility that the locking state of the locking claw 4 with respect to the locking portion 5a cannot be released and the locking claw 4 cannot be used.
【０００８】この場合、巻取器２を分解などして修理す
るしか手段はなく、特に作業現場でのこの修理作業は極
めて厄介である。In this case, there is no other way but to repair the winder 2 by disassembling or the like. Particularly, this repair work at the work site is extremely troublesome.
【０００９】本発明は、上述の問題点に着目し、係止爪
４の回動を阻止する回動阻止機構７を設けることによ
り、命綱１を巻き取りしたとき遠心力により係止爪４の
先端部が外方へ回動突出することがない画期的な高所作
業用墜落防止器を提供するものである。In view of the above problems, the present invention is provided with a rotation preventing mechanism 7 for preventing the rotation of the locking claw 4 so that when the lifeline 1 is wound up, the locking claw 4 is It is an object of the present invention to provide an epoch-making fall prevention device for work at a high place in which a tip portion does not protrude outward.
【００１０】[0010]
【課題を解決するための手段】添付図面を参照して本発
明の要旨を説明する。The gist of the present invention will be described with reference to the accompanying drawings.
【００１１】命綱１を引き出し自在に巻き取り収納する
巻取器２の巻取回動体３の周辺部に係止爪４を枢着し、
この巻取回動体３と共に回動する係止爪４の外側に、係
止爪４の先端部を係止する係止部５ａを設けたラチェッ
ト内歯車体５を設け、この係止爪４の先端部の外方への
回動突出を抑制する弾性体６を設け、この弾性体６の弾
性度を前記巻取回動体３が所定回転速度若しくは所定回
転加速度以上で回転するように命綱１を引き出したとき
遠心力により係止爪４の先端部が外方へ回動突出してラ
チェット内歯車体５の係止部５ａで係止されて巻取回動
体３の回転を停止するように設定した高所作業用墜落防
止器において、前記係止爪４に、前記命綱１を引き出し
たとき係止爪４の先端部が外方へ回動突出するのを許容
し、命綱１を巻き取りしたとき係止爪４の先端部が外方
へ回動突出するのを阻止する回動阻止機構７を設けたこ
とを特徴とする高所作業用墜落防止器に係るものであ
る。A locking claw 4 is pivotally mounted on a periphery of a take-up rotating body 3 of a take-up device 2 for taking up and storing the lifeline 1 so as to be freely pulled out.
A ratchet internal gear body 5 provided with a locking portion 5a for locking the tip of the locking claw 4 is provided outside the locking claw 4 that rotates together with the winding rotary body 3. An elastic body 6 is provided for suppressing the outward rotation of the distal end portion. The centrifugal force causes the tip of the locking claw 4 to project outward and to be locked by the locking portion 5a of the ratchet internal gear 5 when pulled out, so that the rotation of the winding rotary member 3 is stopped. In the fall prevention device for working at height, when the life claw 4 is pulled out, the tip of the locking claw 4 is allowed to rotate outward when the life crest 1 is pulled out, and the life crest 1 is wound up. A rotation preventing mechanism for preventing a tip portion of the locking claw from rotating and protruding outward; Those of the working fall protection device.
【００１２】また、前記係止爪４の近傍位置に係止爪４
の基端部に接離自在に当接し得る当接部材８を設け、こ
の当接部材８を、前記命綱１を引き出したとき係止爪４
の基端部に当接せず係止爪４の先端部が外方へ回動突出
するのを許容し、命綱１を巻き取りしたとき係止爪４の
基端部に当接して係止爪４の先端部が外方へ回動突出す
るのを阻止する前記回動阻止機構７として構成したこと
を特徴とする請求項１記載の高所作業用墜落防止器に係
るものである。Further, the locking claw 4 is located near the locking claw 4.
A contact member 8 capable of coming into contact with the base end portion of the lifeline 1 when the lifeline 1 is pulled out.
The distal end of the locking claw 4 is allowed to protrude outward without being in contact with the base end of the locking claw 4, and when the lifeline 1 is wound up, the distal end of the locking claw 4 abuts on the base end of the locking claw 4 and locked. The fall prevention device according to claim 1, characterized in that the rotation prevention mechanism (7) is configured to prevent the tip portion of the claw (4) from rotating and protruding outward.
【００１３】[0013]
【発明の実施の形態】好適と考える本発明の実施の形態
（発明をどのように実施するか）を、図面に基づいてそ
の作用効果を示して簡単に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.
【００１４】本発明は、命綱１を引き出したときは係止
爪４の先端部が外方へ回動突出するのが許容されてラチ
ェット内歯車体５の係止部５ａに係止され、命綱１を巻
き取りしたときは、回動阻止機構７により係止爪４の先
端部が外方へ回動突出するのを阻止されてラチェット内
歯車体５の係止部５ａに係止するのが防止されることに
なる。According to the present invention, when the lifeline 1 is pulled out, the tip end of the locking claw 4 is allowed to rotate and protrude outward, and is locked by the locking portion 5a of the ratchet internal gear body 5, and When the reel 1 is wound, the tip of the locking claw 4 is prevented from rotating and protruding outward by the rotation preventing mechanism 7 and locked to the locking portion 5a of the ratchet internal gear body 5. Will be prevented.
【００１５】従って、従来例は、命綱１を巻き取りした
とき、偶然にも、係止爪４が係止部５ａに係止してしま
う場合があるなどの問題点があったが、本発明によれば
その問題点は確実に解消され、係止爪４は係止部５ａに
係止する必要のある場面には確実に係止し、係止部５ａ
に係止する必要のない場面には確実にその係止は防止さ
れることになる。Therefore, in the conventional example, when the lifeline 1 is wound up, there is a problem that the locking claw 4 may be locked by the locking portion 5a by accident. According to the above, the problem is surely solved, and the locking claw 4 is securely locked in the case where it is necessary to lock the locking claw 5a.
The locking is surely prevented in a situation where it is not necessary to lock the lock.
【００１６】[0016]
【実施例】本発明の具体的な実施例について図面に基づ
いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.
【００１７】本実施例は、二枚合わせのケース本体２ａ
から成る巻取器２内に巻取回動体３を回動自在に設けて
いる。この巻取回動体３の外周面にコ字状凹部３ａを形
成し、このコ字状凹部３ａ内に命綱１を巻回し、命綱１
を巻取器２の下方に設けた出入り口部２ｂより引き出し
自在に設け、命綱１の先端に取付フック９を付設し、巻
取回動体３の右側にフランジ部３ｂを一体物で連設し、
このフランジ部３ｂの内部に命綱１を巻取回動体３に常
に巻き取る方向（図５中ｂ方向）に付勢するゼンマイバ
ネ10を内設する。In this embodiment, a two-piece case body 2a is used.
The take-up rotating body 3 is rotatably provided in the take-up device 2 composed of. A U-shaped concave portion 3a is formed on the outer peripheral surface of the winding rotary member 3, and the lifeline 1 is wound in the U-shaped concave portion 3a.
Is provided so that it can be pulled out from an entrance 2b provided below the winder 2, a mounting hook 9 is attached to the tip of the lifeline 1, and a flange 3b is integrally provided on the right side of the winding rotary body 3 as an integral body.
Inside the flange portion 3b, there is provided a mainspring 10 for urging the lifeline 1 in a direction in which the lifeline 1 is always wound around the winding rotating body 3 (direction b in FIG. 5).
【００１８】また、巻取回動体３の一側面の対向位置箇
所に一対の係止爪ピン11を止着し、この係止爪ピン11夫
々に係止爪４の基端部を枢着し、この夫々の係止爪４の
中央部にコイルバネを採用した弾性体６の一端部を連結
し、この弾性体６の他端部を巻取回動体３の一側面の対
向位置箇所に立設した立設杆材12に連結し、よって、こ
の弾性体６により係止爪４の先端部が常態で外方へ回動
突出することを抑制するよう構成している。また、係止
爪４の基端面には後述する当接部材８が当接する突起部
13が設けられいてる。尚、符号14は係止爪ストッパーで
ある。Further, a pair of locking claw pins 11 is fixed to a position facing one side surface of the winding rotary member 3, and the base end of the locking claw 4 is pivotally mounted on each of the locking claw pins 11. One end of an elastic body 6 employing a coil spring is connected to the center of each of the locking claws 4, and the other end of the elastic body 6 is erected at a position facing one side of the winding rotary body 3. The elastic member 6 prevents the distal end portion of the locking claw 4 from rotating and protruding outward in a normal state. Further, a protruding portion on which a contact member 8 to be described later abuts is provided on the base end surface of the locking claw 4.
13 are provided. Reference numeral 14 denotes a locking claw stopper.
【００１９】また、夫々の係止爪４を囲む状態にラチェ
ット内歯車体５を巻取器２の内側にリベット15を介して
止着固定し、このラチェット内歯車体５の内形を所定間
隔をおいて鋸歯形状のラチェット歯形に形成して係止部
５ａを設けている。Further, a ratchet internal gear body 5 is fastened and fixed to the inside of the winder 2 via a rivet 15 so as to surround each of the locking claws 4, and the inner shape of the ratchet internal gear body 5 is fixed at a predetermined interval. In this case, the locking portion 5a is formed in a sawtooth-shaped ratchet tooth shape.
【００２０】以上の構成から、本実施例は巻取回動体３
が所定回転速度若しくは所定回転加速度以上で回転する
ように命綱１を引き出したとき遠心力により係止爪４の
先端部が弾性体６に抗して外方へ回動突出することでラ
チェット内歯車体５の係止部５ａで係止されて巻取回動
体３の回動が停止されるように構成している。In this embodiment, the winding rotary member 3 has the above configuration.
When the lifeline 1 is pulled out so as to rotate at a predetermined rotation speed or a predetermined rotation acceleration or more, the tip end of the locking claw 4 pivotally protrudes outward against the elastic body 6 by centrifugal force, so that the ratchet internal gear is rotated. The rotation of the winding rotary body 3 is stopped by being locked by the locking portion 5a of the body 5.
【００２１】また、本実施例は、巻取器２に係るケース
本体２ａ間に架設され、巻取回動体３を回動自在に配設
せしめる軸杆16に被嵌枢着する当接部材８を設けてい
る。In this embodiment, the contact member 8 is installed between the case main bodies 2a of the winder 2 and fitted and pivotally attached to a shaft 16 for rotatably disposing the take-up rotating body 3. Is provided.
【００２２】この当接部材８は、軸杆16に枢着する枢着
部８ａの周面対向位置に先端に当接板材17を備えた屈曲
杆８ｂを突設して構成している。The contact member 8 is formed by projecting a bent rod 8b provided with a contact plate 17 at the tip at a position facing the peripheral surface of a pivot portion 8a pivotally connected to the shaft rod 16.
【００２３】当接部材８は、軸杆16に枢着部８ａを被嵌
枢着させた状態で巻取回動体３の側面とケース本体２ａ
とで挟み込んで回動自在に配設され、この当接部材８と
巻取回動体３の側面との間には板バネ18が介されてお
り、よって、当接部材８は、若干ブレーキのかかった状
態で軸杆16に回動自在に枢着被嵌されている。また、当
接部材８は、図１，２に図示したように屈曲杆８ｂ夫々
が係止爪４と立設杆材１２との間に位置する状態で配設
され、屈曲杆８ｂ夫々の先端に設けられた当接板材１７
は前記係止爪４の突起部13の近傍位置に配されている。The abutting member 8 is mounted on the side of the winding rotary body 3 and the case body 2a in a state where the pivoting portion 8a is fitted and pivoted on the shaft rod 16.
The leaf spring 18 is interposed between the contact member 8 and the side surface of the take-up rotating body 3, so that the contact member 8 is slightly In this state, it is pivotally fitted to the shaft 16 so as to be freely rotatable. The contact member 8 is disposed with the bent rods 8b positioned between the locking claws 4 and the standing rods 12 as shown in FIGS. Contact plate 17 provided on
Is disposed in the vicinity of the projection 13 of the locking claw 4.
【００２４】従って、当接部材８は、その当接板材17が
突起部13に当接していない状態においては係止爪４の回
動（係止爪ピン11を軸としての回動）を許容し（図１参
照）、当接板材17が突起部13に当接している状態におい
ては係止爪４の回動を阻止することになる（図２参
照）。これが請求項で言う回動阻止機構７である。Therefore, the contact member 8 permits the rotation of the locking claw 4 (rotation about the locking claw pin 11) when the contact plate 17 is not in contact with the projection 13. However, when the contact plate 17 is in contact with the projection 13, the rotation of the locking claw 4 is prevented (see FIG. 2). This is the rotation preventing mechanism 7 described in the claims.
【００２５】符号２ｃは巻取器２を吊り下げ固定するた
めの吊下用部、19は出入り口部２ｂより命綱１の先端部
を外出状態に保持せしめる係止保持部材である。Reference numeral 2c denotes a suspension unit for suspending and fixing the winder 2, and reference numeral 19 denotes a locking and holding member for holding the leading end of the lifeline 1 from the doorway 2b in an outside state.
【００２６】本実施例は上述のように構成したから、巻
取器２から命綱１を引き出して巻取回動体３を図１中ａ
方向に回動させると、当接部材８はその当接板材17が係
止爪４（突起部13）から離れた状態で立設杆材12に押圧
された状態で回動し、反対に、巻取器２へ命綱１を巻き
取りして巻取回動体３を図２中ｂ方向に回動させると、
当接部材８はその当接板材17が係止爪４（突起部13）に
当接して押圧された状態で立設杆材12から離れた状態で
回動することになる。In this embodiment, since the lifeline 1 is pulled out from the winder 2 and the winding rotary body 3 is a
When the contact member 8 is rotated in the direction, the contact member 8 rotates in a state where the contact plate member 17 is separated from the locking claw 4 (the protrusion 13) and is pressed by the standing rod 12. When the lifeline 1 is wound on the winder 2 and the winding rotating body 3 is rotated in the direction b in FIG.
The contact member 8 rotates in a state where the contact plate member 17 is in contact with the locking claw 4 (the protruding portion 13) and is pressed away from the standing rod 12.
【００２７】従って、回動阻止機構７により、巻取回動
体３が所定回転速度若しくは所定回転加速度以上で回転
するように命綱１を引き出したときは遠心力により係止
爪４の先端部が外方へ回動突出するのが許容されてラチ
ェット内歯車体５の係止部５ａに係止し、一方、巻取回
動体３が所定回転速度若しくは所定回転加速度以上で回
動するように巻き取りしたときは遠心力により係止爪４
の先端部が外方へ回動突出するのが阻止されてラチェッ
ト内歯車体５の係止部５ａに係止するのが防止されるこ
とになる。Accordingly, when the lifeline 1 is pulled out by the rotation preventing mechanism 7 so that the winding rotary body 3 rotates at a predetermined rotation speed or a predetermined rotation acceleration or more, the distal end of the locking claw 4 is moved outward by centrifugal force. And is locked to the locking portion 5a of the ratchet internal gear body 5 while being wound so that the winding rotary body 3 rotates at a predetermined rotation speed or a predetermined rotation acceleration or more. When the locking claw 4 by centrifugal force
Is prevented from rotating and protruding outward, and is prevented from being locked to the locking portion 5a of the ratchet internal gear body 5.
【００２８】よって、本実施例によれば、巻取回動体３
が所定回転速度若しくは所定回転加速度以上で回動する
ように命綱１を巻き取りしたときにも係止爪４が遠心力
で外側に回動し、巻取回動体３の回動が停止すると同時
に係止爪４が係止部５ａに係止してしまう場合があり、
命綱１を最後まで巻き取らせたときに係止爪４が係止部
５ａに係止してしまうと、命綱１は係止保持部材19が支
えており、それ以上巻き取ることができない状態である
が故に係止爪４の係止部５ａに対する係止状態が解除で
きなくなり使用できなくなるおそれがあるなどの問題点
があったが、本実施例によればその問題点は確実に解消
され、例えば、万一作業者が墜落した際など、巻取回動
体３が所定回転速度若しくは所定回転加速度以上で回動
するように命綱１が引き出された場合には係止爪４は係
止部５ａに確実に係止して安全となり、巻取回動体３を
ゆっくり回動させながら命綱１を巻き取りする際は勿
論、巻取回動体３が所定回転速度若しくは所定回転加速
度以上で回動するように命綱１を巻き取りした場合にお
いても係止爪４は係止部５ａに係止するのが確実に防止
されることになりより一層商品価値が向上することにな
る。Therefore, according to the present embodiment, the winding rotary member 3
When the lifeline 1 is wound so as to rotate at a predetermined rotation speed or a predetermined rotation acceleration or more, the locking claw 4 also rotates outward due to centrifugal force, and the rotation of the winding rotary body 3 stops. The locking claw 4 may be locked on the locking portion 5a,
When the locking claw 4 is locked to the locking portion 5a when the lifeline 1 is completely wound, the lifeline 1 is supported by the locking holding member 19, and cannot be further wound. However, there was a problem that the locking state of the locking claw 4 with respect to the locking portion 5a could not be released, and there was a possibility that the locking claw 4 could not be used. However, according to the present embodiment, the problem was solved without fail. For example, when the lifeline 1 is pulled out such that the winding rotary body 3 rotates at a predetermined rotation speed or a predetermined rotation acceleration or more, such as when an operator falls down, the locking claw 4 becomes the locking portion 5a. When the lifeline 1 is wound while the winding rotary body 3 is slowly rotated, the winding rotary body 3 is rotated at a predetermined rotation speed or a predetermined rotation acceleration or more. Even when the lifeline 1 is wound up in the More commercial value than would be reliably prevented from locking is improved in part 5a.
【００２９】また、本実施例は、回動阻止機構７に係る
当接部材８が係止爪４に対して接離することで係止爪４
はその回動が許容或いは阻止されることになり、係止爪
４が係止部５ａに係止する必要のある場面には確実に係
止し、係止する必要のない場面には確実にその係止が防
止されることになり前述した従来例の問題点は確実に解
消され、そして更に、その簡易構造故に量産性に秀れる
ことになる。Further, in this embodiment, the abutment member 8 of the rotation preventing mechanism 7 comes into contact with and separates from the locking claw 4 so that the locking claw 4
Will be allowed or prevented from rotating, and will be securely locked when the locking claw 4 needs to be locked to the locking portion 5a, and securely when not required to be locked. The locking is prevented, so that the above-mentioned problems of the prior art are surely solved, and furthermore, the simple structure leads to excellent mass productivity.
【００３０】[0030]
【発明の効果】本発明は上述のように構成したから、従
来例は、命綱を巻き取りしたときにも係止爪が遠心力で
外方に突出回動し、巻取回動体の回動が停止すると同時
に、偶然にも、係止爪が係止部に係止してしまう場合が
あり使用できなくなるおそれがあるなどの問題点があっ
たが、本発明によればその問題点は確実に解消され、係
止爪は係止部に係止する必要のある場面には確実に係止
して巻取回動体の回動を確実に停止することになり非常
に安全性に秀れ、更に、係止する必要のない場面にはそ
の係止は確実に防止されることになりより一層商品価値
が向上することになるなど極めて画期的な高所作業用墜
落防止器となる。Since the present invention is constructed as described above, in the conventional example, even when the lifeline is wound up, the locking claw protrudes outward due to centrifugal force and rotates, and the winding rotary body rotates. At the same time as the stoppage, there is a problem that the locking claw may be accidentally locked to the locking portion and may not be used, but according to the present invention, the problem is definitely In the case where the locking claw needs to be locked to the locking portion, it is securely locked and the rotation of the winding rotary body is reliably stopped, and it is very excellent in safety, Further, in the case where it is not necessary to lock the lock, the lock is surely prevented, and the commercial value is further improved, so that an extremely innovative fall arrester for work at a high place is obtained.
【図１】本実施例に係る要部の概略動作説明図である。FIG. 1 is a schematic operation explanatory view of a main part according to the present embodiment.
【図２】本実施例に係る要部の概略動作説明図である。FIG. 2 is a schematic operation explanatory view of a main part according to the embodiment.
【図３】本実施例に係る要部の平断面図である。FIG. 3 is a plan sectional view of a main part according to the embodiment.
【図４】本実施例に係る要部を説明する断面図である。FIG. 4 is a cross-sectional view illustrating a main part according to the present embodiment.
【図５】本実施例に係る要部を説明する断面図である。FIG. 5 is a cross-sectional view illustrating a main part according to the present embodiment.
１ 命綱 ２ 巻取器 ３ 巻取回動体 ４ 係止爪 ５ ラチェット内歯車体 ５ａ 係止部 ６ 弾性体 ７ 回動阻止機構 ８ 当接部材 DESCRIPTION OF SYMBOLS 1 Lifeline 2 Winding device 3 Winding rotating body 4 Locking claw 5 Ratchet internal gear body 5a Locking portion 6 Elastic body 7 Rotation preventing mechanism 8 Contact member
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１１年１２月２７日（１９９９．１２．
２７）[Submission date] December 27, 1999 (1999.12.
27)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【書類名】 明細書[Document Name] Statement
【発明の名称】 高所作業用墜落防止器[Title of the Invention] Fall prevention device for work at height
【特許請求の範囲】[Claims]
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、高所作業用墜落防
止器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fall prevention device for working at height.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】本出願
人は、実用新案登録第２５７３４４８号により高所作業
用墜落防止器（以下、従来例という。）を提案してい
る。2. Description of the Related Art The applicant of the present invention has proposed a fall arrester for working at heights (hereinafter referred to as a conventional example) according to Japanese Utility Model Registration No. 2573448.
【０００３】この従来例は、高所で作業する作業者が万
一足を踏み外して墜落したとき、この墜落を阻止して作
業者の人命を守ることができるものとして極めて画期的
である。[0003] This conventional example is extremely epoch-making in that when a worker working at a high place falls down by stepping off, the fall can be prevented and the life of the worker can be protected.
【０００４】具体的に説明すると、この従来例は、巻取
器２を建物の所望の位置に吊り下げ、巻取器２の下部に
設けた命綱１の出入り口部２ｂより巻取回動体３に巻回
された命綱１を引き出し、先端の取付フック９を作業者
のベルトの係止環などに係止して作業を行い、作業者が
万一足を踏み外して墜落すると、命綱１が急激に引き出
されて巻取回動体３が所定回転速度若しくは所定回転加
速度以上で回転するので、巻取回動体３と共に回動する
係止爪４の先端部が遠心力により弾性体６の弾性度に打
ち勝って係止爪ピン11を軸として外方に回動突出し、巻
取器２の内部に止着したラチェット内歯車体５の係止部
５ａで係止されて巻取回動体３の回転を停止し作業者の
墜落を防止することができる。More specifically, in this conventional example, the winder 2 is hung at a desired position in a building, and the winder 2 is attached to the winding rotary body 3 through an entrance 2b of a lifeline 1 provided below the winder 2. When the worker pulls out the wound lifeline 1 and locks the mounting hook 9 at the tip thereof to a locking ring of a worker's belt or the like to perform work, and the worker steps down and falls down, the lifeline 1 suddenly drops. Since the take-up rotating body 3 is pulled out and rotates at a predetermined rotational speed or a predetermined rotational acceleration or more, the tip of the locking claw 4 that rotates together with the take-up rotary body 3 overcomes the elasticity of the elastic body 6 due to centrifugal force. The rotation of the winding rotary member 3 is stopped by the locking portion 5a of the ratchet internal gear body 5 fixed to the inside of the winding device 2 by being projected outwardly by rotating the locking claw pin 11 as an axis. The worker can be prevented from falling.
【０００５】また、この従来例に係る係止爪４の係止部
５ａに対する係止状態を解除する場合には、一度命綱１
を巻き取らせるように巻取回動体３を回動させると、係
止爪４は弾性体６の弾性により元の位置に戻り回動する
ことになり、よって、係止爪４の係止部５ａに対する係
止状態を解除することができる。In order to release the locking state of the locking claw 4 according to the conventional example with respect to the locking portion 5a, once the lifeline 1
When the take-up rotating body 3 is rotated so as to take up, the locking claw 4 returns to its original position and rotates due to the elasticity of the elastic body 6, and thus the locking portion of the locking claw 4 The locked state with respect to 5a can be released.
【０００６】ところで、本出願人は、この従来例につい
て更なる研究開発を進めているうちに、巻取回動体３が
所定回転速度若しくは所定回転加速度以上で回動するよ
うに命綱１を巻き取りしたときにも係止爪４の先端部が
遠心力で外方に回動突出し、巻取回動体３の回動が停止
すると同時に、偶然にも、係止爪４が係止部５ａに係止
してしまう場合があることが判明した。Meanwhile, the applicant has taken up the lifeline 1 so that the winding rotary body 3 rotates at a predetermined rotation speed or a predetermined rotation acceleration or more while further researching and developing the conventional example. In this case, the distal end of the locking claw 4 pivotally protrudes outward due to centrifugal force, and the rotation of the winding rotary body 3 stops. At the same time, the locking claw 4 accidentally engages with the locking portion 5a. It turned out that it might stop.
【０００７】つまり、従来例は、命綱１を最後まで巻き
取らせたときに係止爪４が係止部５ａに係止した際、命
綱１はそれ以上巻き取ることができない状態であるが故
に係止爪４の係止部５ａに対する係止状態が解除できな
くなり使用できなくなるおそれがある。That is, in the prior art, when the locking claw 4 is locked on the locking portion 5a when the lifeline 1 is completely wound, the lifeline 1 cannot be further wound up. There is a possibility that the locking state of the locking claw 4 with respect to the locking portion 5a cannot be released and the locking claw 4 cannot be used.
【０００８】この場合、巻取器２を分解などして修理す
るしか手段はなく、特に作業現場でのこの修理作業は極
めて厄介である。In this case, there is no other way but to repair the winder 2 by disassembling or the like. Particularly, this repair work at the work site is extremely troublesome.
【０００９】本発明は、上述の問題点に着目し、係止爪
４の回動を阻止する回動阻止機構７を設けることによ
り、命綱１を巻き取りしたとき遠心力により係止爪４の
先端部が外方へ回動突出することがない画期的な高所作
業用墜落防止器を提供するものである。In view of the above problems, the present invention is provided with a rotation preventing mechanism 7 for preventing the rotation of the locking claw 4 so that when the lifeline 1 is wound up, the locking claw 4 is It is an object of the present invention to provide an epoch-making fall prevention device for work at a high place in which a tip portion does not protrude outward.
【００１０】[0010]
【課題を解決するための手段】添付図面を参照して本発
明の要旨を説明する。The gist of the present invention will be described with reference to the accompanying drawings.
【００１１】命綱１を引き出し自在に巻き取り収納する
巻取器２の巻取回動体３の周辺部に係止爪４を枢着し、
この巻取回動体３と共に回動する係止爪４の外側に、係
止爪４の先端部を係止する係止部５ａを設けたラチェッ
ト内歯車体５を設け、この係止爪４の先端部の外方への
回動突出を抑制する弾性体６を設け、この弾性体６の弾
性度を前記巻取回動体３が所定回転速度若しくは所定回
転加速度以上で回転するように命綱１を引き出したとき
遠心力により係止爪４の先端部が外方へ回動突出してラ
チェット内歯車体５の係止部５ａで係止されて巻取回動
体３の回転を停止するように設定した高所作業用墜落防
止器において、前記係止爪４に、前記命綱１を引き出し
たとき係止爪４の先端部が外方へ回動突出するのを許容
し、命綱１を巻き取りしたとき係止爪４の先端部が外方
へ回動突出するのを阻止する回動阻止機構７を設け、こ
の回動阻止機構７を前記係止爪４の近傍位置に係止爪４
の基端部に接離自在に当接し得る当接部材８を設け、こ
の当接部材８を、前記命綱１を引き出したとき係止爪４
の基端部に当接せず係止爪４の先端部が外方へ回動突出
するのを許容し、命綱１を巻き取りしたとき係止爪４の
基端部に当接して係止爪４の先端部が外方へ回動突出す
るのを阻止する構成としたことを特徴とする高所作業用
墜落防止器に係るものである。A locking claw 4 is pivotally mounted on a periphery of a take-up rotating body 3 of a take-up device 2 for taking up and storing the lifeline 1 so as to be freely pulled out.
A ratchet internal gear body 5 provided with a locking portion 5a for locking the tip of the locking claw 4 is provided outside the locking claw 4 that rotates together with the winding rotary body 3. An elastic body 6 is provided for suppressing the outward rotation of the distal end portion. The centrifugal force causes the tip of the locking claw 4 to project outward and to be locked by the locking portion 5a of the ratchet internal gear 5 when pulled out, so that the rotation of the winding rotary member 3 is stopped. In the fall prevention device for working at height, when the life claw 4 is pulled out, the tip of the locking claw 4 is allowed to rotate outward when the life crest 1 is pulled out, and the life crest 1 is wound up. A rotation preventing mechanism 7 for preventing the tip of the locking claw 4 from rotating outwardly is provided .
The rotation preventing mechanism 7 is moved to a position near the locking claw 4
A contact member 8 capable of freely contacting and separating from the base end of the
When the lifeline 1 is pulled out, the contact claw 4
The tip of the locking claw 4 projects outward without contacting the base end of the
When the lifeline 1 is wound up,
The distal end of the locking claw 4 pivotally protrudes outward by contacting the base end.
The present invention relates to a fall arrester for working at heights, wherein the fall arrester is configured to prevent the fall.
【００１２】[0012]
【発明の実施の形態】好適と考える本発明の実施の形態
（発明をどのように実施するか）を、図面に基づいてそ
の作用効果を示して簡単に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.
【００１３】本発明は、命綱１を引き出したときは係止
爪４の先端部が外方へ回動突出するのが許容されてラチ
ェット内歯車体５の係止部５ａに係止され、命綱１を巻
き取りしたときは、回動阻止機構７により係止爪４の先
端部が外方へ回動突出するのを阻止されてラチェット内
歯車体５の係止部５ａに係止するのが防止されることに
なる。According to the present invention, when the lifeline 1 is pulled out, the tip of the locking claw 4 is allowed to rotate and protrude outward and is locked by the locking portion 5a of the ratchet internal gear body 5, and When the reel 1 is wound, the tip of the locking claw 4 is prevented from rotating and protruding outward by the rotation preventing mechanism 7 and locked to the locking portion 5a of the ratchet internal gear body 5. Will be prevented.
【００１４】従って、従来例は、命綱１を巻き取りした
とき、偶然にも、係止爪４が係止部５ａに係止してしま
う場合があるなどの問題点があったが、本発明によれば
その問題点は確実に解消され、係止爪４は係止部５ａに
係止する必要のある場面には確実に係止し、係止部５ａ
に係止する必要のない場面には確実にその係止は防止さ
れることになる。Therefore, in the conventional example, when the lifeline 1 is wound up, there is a problem that the locking claw 4 may be locked by the locking portion 5a by accident. According to the above, the problem is surely solved, and the locking claw 4 is securely locked in the case where it is necessary to lock the locking claw 5a.
The locking is surely prevented in a situation where it is not necessary to lock the lock.
【００１５】[0015]
【実施例】本発明の具体的な実施例について図面に基づ
いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.
【００１６】本実施例は、二枚合わせのケース本体２ａ
から成る巻取器２内に巻取回動体３を回動自在に設けて
いる。この巻取回動体３の外周面にコ字状凹部３ａを形
成し、このコ字状凹部３ａ内に命綱１を巻回し、命綱１
を巻取器２の下方に設けた出入り口部２ｂより引き出し
自在に設け、命綱１の先端に取付フック９を付設し、巻
取回動体３の右側にフランジ部３ｂを一体物で連設し、
このフランジ部３ｂの内部に命綱１を巻取回動体３に常
に巻き取る方向（図５中ｂ方向）に付勢するゼンマイバ
ネ10を内設する。In this embodiment, a two-piece case body 2a is used.
The take-up rotating body 3 is rotatably provided in the take-up device 2 composed of. A U-shaped concave portion 3a is formed on the outer peripheral surface of the winding rotary member 3, and the lifeline 1 is wound in the U-shaped concave portion 3a.
Is provided so that it can be pulled out from an entrance 2b provided below the winder 2, a mounting hook 9 is attached to the tip of the lifeline 1, and a flange 3b is integrally provided on the right side of the winding rotary body 3 as an integral body.
Inside the flange portion 3b, there is provided a mainspring 10 for urging the lifeline 1 in a direction in which the lifeline 1 is always wound around the winding rotating body 3 (direction b in FIG. 5).
【００１７】また、巻取回動体３の一側面の対向位置箇
所に一対の係止爪ピン11を止着し、この係止爪ピン11夫
々に係止爪４の基端部を枢着し、この夫々の係止爪４の
中央部にコイルバネを採用した弾性体６の一端部を連結
し、この弾性体６の他端部を巻取回動体３の一側面の対
向位置箇所に立設した立設杆材12に連結し、よって、こ
の弾性体６により係止爪４の先端部が常態で外方へ回動
突出することを抑制するよう構成している。また、係止
爪４の基端面には後述する当接部材８が当接する突起部
13が設けられいてる。尚、符号14は係止爪ストッパーで
ある。Further, a pair of locking claw pins 11 is fixed to a position facing one side surface of the winding rotary member 3, and the base end of the locking claw 4 is pivotally mounted on each of the locking claw pins 11. One end of an elastic body 6 employing a coil spring is connected to the center of each of the locking claws 4, and the other end of the elastic body 6 is erected at a position facing one side of the winding rotary body 3. The elastic member 6 prevents the distal end portion of the locking claw 4 from rotating and protruding outward in a normal state. Further, a protruding portion on which a contact member 8 to be described later abuts is provided on the base end surface of the locking claw 4.
13 are provided. Reference numeral 14 denotes a locking claw stopper.
【００１８】また、夫々の係止爪４を囲む状態にラチェ
ット内歯車体５を巻取器２の内側にリベット15を介して
止着固定し、このラチェット内歯車体５の内形を所定間
隔をおいて鋸歯形状のラチェット歯形に形成して係止部
５ａを設けている。A ratchet internal gear 5 is fastened and fixed to the inside of the winder 2 via a rivet 15 so as to surround each of the locking claws 4. In this case, the locking portion 5a is formed in a sawtooth-shaped ratchet tooth shape.
【００１９】以上の構成から、本実施例は巻取回動体３
が所定回転速度若しくは所定回転加速度以上で回転する
ように命綱１を引き出したとき遠心力により係止爪４の
先端部が弾性体６に抗して外方へ回動突出することでラ
チェット内歯車体５の係止部５ａで係止されて巻取回動
体３の回動が停止されるように構成している。In this embodiment, the winding rotary member 3 has the above configuration.
When the lifeline 1 is pulled out so as to rotate at a predetermined rotation speed or a predetermined rotation acceleration or more, the tip end of the locking claw 4 pivotally protrudes outward against the elastic body 6 by centrifugal force, so that the ratchet internal gear is rotated. The rotation of the winding rotary body 3 is stopped by being locked by the locking portion 5a of the body 5.
【００２０】また、本実施例は、巻取器２に係るケース
本体２ａ間に架設され、巻取回動体３を回動自在に配設
せしめる軸杆16に被嵌枢着する当接部材８を設けてい
る。In this embodiment, the contact member 8 is installed between the case main bodies 2a of the winder 2 and fitted and pivotally attached to a shaft 16 on which the winding rotary body 3 is rotatably arranged. Is provided.
【００２１】この当接部材８は、軸杆16に枢着する枢着
部８ａの周面対向位置に先端に当接板材17を備えた屈曲
杆８ｂを突設して構成している。The contact member 8 is formed by projecting a bent rod 8b having a contact plate 17 at the tip at a position facing the peripheral surface of a pivot portion 8a pivotally connected to the shaft rod 16.
【００２２】当接部材８は、軸杆16に枢着部８ａを被嵌
枢着させた状態で巻取回動体３の側面とケース本体２ａ
とで挟み込んで回動自在に配設され、この当接部材８と
巻取回動体３の側面との間には板バネ18が介されてお
り、よって、当接部材８は、若干ブレーキのかかった状
態で軸杆16に回動自在に枢着被嵌されている。また、当
接部材８は、図１，２に図示したように屈曲杆８ｂ夫々
が係止爪４と立設杆材12との間に位置する状態で配設さ
れ、屈曲杆８ｂ夫々の先端に設けられた当接板材17は前
記係止爪４の突起部13の近傍位置に配されている。The contact member 8 is provided on the side of the take-up rotating body 3 and the case main body 2a in a state where the pivot portion 8a is fitted and pivoted on the shaft rod 16.
The leaf spring 18 is interposed between the contact member 8 and the side surface of the take-up rotating body 3, so that the contact member 8 is slightly In this state, it is pivotally fitted to the shaft 16 so as to be freely rotatable. The abutting member 8 is disposed with the bent rods 8b positioned between the locking claws 4 and the standing rods 12 as shown in FIGS. The contact plate member 17 provided at a position near the projection 13 of the locking claw 4 is disposed.
【００２３】従って、当接部材８は、その当接板材17が
突起部13に当接していない状態においては係止爪４の回
動（係止爪ピン11を軸としての回動）を許容し（図１参
照）、当接板材17が突起部13に当接している状態におい
ては係止爪４の回動を阻止することになる（図２参
照）。これが請求項で言う回動阻止機構７である。Accordingly, the contact member 8 allows the rotation of the locking claw 4 (rotation about the locking claw pin 11) when the contact plate 17 is not in contact with the projection 13. However, when the contact plate 17 is in contact with the projection 13, the rotation of the locking claw 4 is prevented (see FIG. 2). This is the rotation preventing mechanism 7 described in the claims.
【００２４】符号２ｃは巻取器２を吊り下げ固定するた
めの吊下用部、19は出入り口部２ｂより命綱１の先端部
を外出状態に保持せしめる係止保持部材である。Reference numeral 2c denotes a suspension unit for suspending and fixing the winder 2, and reference numeral 19 denotes a locking and holding member for holding the leading end of the lifeline 1 out of the entrance 2b.
【００２５】本実施例は上述のように構成したから、巻
取器２から命綱１を引き出して巻取回動体３を図１中ａ
方向に回動させると、当接部材８はその当接板材17が係
止爪４（突起部13）から離れた状態で立設杆材12に押圧
された状態で回動し、反対に、巻取器２へ命綱１を巻き
取りして巻取回動体３を図２中ｂ方向に回動させると、
当接部材８はその当接板材17が係止爪４（突起部13）に
当接して押圧された状態で立設杆材12から離れた状態で
回動することになる。Since the present embodiment is constructed as described above, the lifeline 1 is pulled out from the winder 2 and the winding rotary body 3 is moved to a position a in FIG.
When the contact member 8 is rotated in the direction, the contact member 8 rotates in a state where the contact plate member 17 is separated from the locking claw 4 (the protrusion 13) and is pressed by the standing rod 12. When the lifeline 1 is wound on the winder 2 and the winding rotating body 3 is rotated in the direction b in FIG.
The contact member 8 rotates in a state where the contact plate member 17 is in contact with the locking claw 4 (the protruding portion 13) and is pressed away from the standing rod 12.
【００２６】従って、回動阻止機構７により、巻取回動
体３が所定回転速度若しくは所定回転加速度以上で回転
するように命綱１を引き出したときは遠心力により係止
爪４の先端部が外方へ回動突出するのが許容されてラチ
ェット内歯車体５の係止部５ａに係止し、一方、巻取回
動体３が所定回転速度若しくは所定回転加速度以上で回
動するように巻き取りしたときは遠心力により係止爪４
の先端部が外方へ回動突出するのが阻止されてラチェッ
ト内歯車体５の係止部５ａに係止するのが防止されるこ
とになる。Accordingly, when the lifeline 1 is pulled out by the rotation preventing mechanism 7 so that the winding rotating body 3 rotates at a predetermined rotation speed or a predetermined rotation acceleration or more, the distal end of the locking claw 4 is removed by centrifugal force. And is locked to the locking portion 5a of the ratchet internal gear body 5 while being wound so that the winding rotary body 3 rotates at a predetermined rotation speed or a predetermined rotation acceleration or more. When the locking claw 4 by centrifugal force
Is prevented from rotating and protruding outward, and is prevented from being locked to the locking portion 5a of the ratchet internal gear body 5.
【００２７】よって、本実施例によれば、巻取回動体３
が所定回転速度若しくは所定回転加速度以上で回動する
ように命綱１を巻き取りしたときにも係止爪４が遠心力
で外側に回動し、巻取回動体３の回動が停止すると同時
に係止爪４が係止部５ａに係止してしまう場合があり、
命綱１を最後まで巻き取らせたときに係止爪４が係止部
５ａに係止してしまうと、命綱１は係止保持部材19が支
えており、それ以上巻き取ることができない状態である
が故に係止爪４の係止部５ａに対する係止状態が解除で
きなくなり使用できなくなるおそれがあるなどの問題点
があったが、本実施例によればその問題点は確実に解消
され、例えば、万一作業者が墜落した際など、巻取回動
体３が所定回転速度若しくは所定回転加速度以上で回動
するように命綱１が引き出された場合には係止爪４は係
止部５ａに確実に係止して安全となり、巻取回動体３を
ゆっくり回動させながら命綱１を巻き取りする際は勿
論、巻取回動体３が所定回転速度若しくは所定回転加速
度以上で回動するように命綱１を巻き取りした場合にお
いても係止爪４は係止部５ａに係止するのが確実に防止
されることになりより一層商品価値が向上することにな
る。Therefore, according to the present embodiment, the winding rotary member 3
When the lifeline 1 is wound so as to rotate at a predetermined rotation speed or a predetermined rotation acceleration or more, the locking claw 4 also rotates outward due to the centrifugal force, and the rotation of the winding rotary body 3 stops. The locking claw 4 may be locked on the locking portion 5a,
When the locking claw 4 is locked to the locking portion 5a when the lifeline 1 is completely wound, the lifeline 1 is supported by the locking holding member 19, and cannot be further wound. However, there was a problem that the locking state of the locking claw 4 with respect to the locking portion 5a could not be released, and there was a possibility that the locking claw 4 could not be used. However, according to the present embodiment, the problem was solved without fail. For example, if the lifeline 1 is pulled out so that the winding rotary body 3 rotates at a predetermined rotation speed or a predetermined rotation acceleration or more, such as when an operator falls down, the locking claw 4 becomes the locking portion 5a. When the lifeline 1 is wound up while the winding-up rotating body 3 is slowly rotated, the winding-up rotating body 3 is rotated at a predetermined rotational speed or a predetermined rotational acceleration or more. Even when the lifeline 1 is wound up in the More commercial value than would be reliably prevented from locking is improved in part 5a.
【００２８】また、本実施例は、回動阻止機構７に係る
当接部材８が係止爪４に対して接離することで係止爪４
はその回動が許容或いは阻止されることになり、係止爪
４が係止部５ａに係止する必要のある場面には確実に係
止し、係止する必要のない場面には確実にその係止が防
止されることになり前述した従来例の問題点は確実に解
消され、そして更に、その簡易構造故に量産性に秀れる
ことになる。Further, in the present embodiment, the abutment member 8 relating to the rotation preventing mechanism 7 comes into contact with and separates from the locking claw 4 so that the locking claw 4
Will be allowed or prevented from rotating, and will be securely locked when the locking claw 4 needs to be locked to the locking portion 5a, and securely when not required to be locked. The locking is prevented, so that the above-mentioned problems of the prior art are surely solved, and furthermore, the simple structure leads to excellent mass productivity.
【００２９】[0029]
【発明の効果】本発明は上述のように構成したから、従
来例は、命綱を巻き取りしたときにも係止爪が遠心力で
外方に突出回動し、巻取回動体の回動が停止すると同時
に、偶然にも、係止爪が係止部に係止してしまう場合が
あり使用できなくなるおそれがあるなどの問題点があっ
たが、本発明によればその問題点は確実に解消され、係
止爪は係止部に係止する必要のある場面には確実に係止
して巻取回動体の回動を確実に停止することになり非常
に安全性に秀れ、更に、係止する必要のない場面にはそ
の係止は確実に防止されることになりより一層商品価値
が向上することになるなど極めて画期的な高所作業用墜
落防止器となる。Since the present invention is constructed as described above, in the conventional example, even when the lifeline is wound up, the locking claw protrudes outward due to centrifugal force and rotates, and the winding rotary body rotates. At the same time as the stoppage, there is a problem that the locking claw may be accidentally locked to the locking portion and may not be used, but according to the present invention, the problem is definitely In the case where the locking claw needs to be locked to the locking portion, it is securely locked and the rotation of the winding rotary body is reliably stopped, and it is very excellent in safety, Further, in the case where it is not necessary to lock the lock, the lock is surely prevented, and the commercial value is further improved, so that an extremely innovative fall arrester for work at a high place is obtained.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本実施例に係る要部の概略動作説明図である。FIG. 1 is a schematic operation explanatory view of a main part according to the present embodiment.
【図２】本実施例に係る要部の概略動作説明図である。FIG. 2 is a schematic operation explanatory view of a main part according to the embodiment.
【図３】本実施例に係る要部の平断面図である。FIG. 3 is a plan sectional view of a main part according to the embodiment.
【図４】本実施例に係る要部を説明する断面図である。FIG. 4 is a cross-sectional view illustrating a main part according to the present embodiment.
【図５】本実施例に係る要部を説明する断面図である。FIG. 5 is a cross-sectional view illustrating a main part according to the present embodiment.
【符号の説明】 １ 命綱 ２ 巻取器 ３ 巻取回動体 ４ 係止爪 ５ ラチェット内歯車体 ５ａ 係止部 ６ 弾性体 ７ 回動阻止機構 ８ 当接部材[Description of Signs] 1 Lifeline 2 Winding device 3 Winding rotating body 4 Locking claw 5 Ratchet internal gear body 5a Locking portion 6 Elastic body 7 Rotation preventing mechanism 8 Contact member
Claims (2)
巻取器の巻取回動体の周辺部に係止爪を枢着し、この巻
取回動体と共に回動する係止爪の外側に、係止爪の先端
部を係止する係止部を設けたラチェット内歯車体を設
け、この係止爪の先端部の外方への回動突出を抑制する
弾性体を設け、この弾性体の弾性度を前記巻取回動体が
所定回転速度若しくは所定回転加速度以上で回転するよ
うに命綱を引き出したとき遠心力により係止爪の先端部
が外方へ回動突出してラチェット内歯車体の係止部で係
止されて巻取回動体の回転を停止するように設定した高
所作業用墜落防止器において、前記係止爪に、前記命綱
を引き出したとき係止爪の先端部が外方へ回動突出する
のを許容し、命綱を巻き取りしたとき係止爪の先端部が
外方へ回動突出するのを阻止する回動阻止機構を設けた
ことを特徴とする高所作業用墜落防止器。An engaging claw is pivotally mounted on a periphery of a take-up rotating body of a take-up device that winds up and retracts a lifeline so as to be freely pulled out. A ratchet internal gear body provided with a locking portion for locking the distal end of the locking claw is provided, and an elastic body for suppressing outward rotation of the distal end of the locking claw is provided. When the lifeline is pulled out so that the winding rotating body rotates at a predetermined rotation speed or a predetermined rotation acceleration or more at the elasticity, the distal end of the locking claw is rotationally protruded outward by centrifugal force to engage the ratchet internal gear body. In the fall prevention device for aerial work set to be stopped by the stop portion and stop the rotation of the winding rotary body, when the lifeline is pulled out to the locking claw, the tip of the locking claw is outward. To allow the tip of the locking claw to pivot outward when the lifeline is wound up. A fall arrestor for working at heights, which is provided with a rotation preventing mechanism for preventing a fall.
に接離自在に当接し得る当接部材を設け、この当接部材
を、前記命綱を引き出したとき係止爪の基端部に当接せ
ず係止爪の先端部が外方へ回動突出するのを許容し、命
綱を巻き取りしたとき係止爪の基端部に当接して係止爪
の先端部が外方へ回動突出するのを阻止する前記回動阻
止機構として構成したことを特徴とする請求項１記載の
高所作業用墜落防止器。2. A contact member which is capable of coming into contact with a base end portion of a locking claw so as to be able to freely contact with and separate from the base of the locking claw. The distal end of the locking claw is allowed to protrude outwardly without contacting the base end, and abuts on the base end of the locking claw when the lifeline is wound up. 2. The fall prevention device according to claim 1, wherein the rotation prevention mechanism is configured to prevent the rotation protruding outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10370634A JP3043733B1 (en) | 1998-12-25 | 1998-12-25 | Fall prevention device for work at height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10370634A JP3043733B1 (en) | 1998-12-25 | 1998-12-25 | Fall prevention device for work at height |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3043733B1 JP3043733B1 (en) | 2000-05-22 |
| JP2000189530A true JP2000189530A (en) | 2000-07-11 |
Family
ID=18497351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10370634A Expired - Lifetime JP3043733B1 (en) | 1998-12-25 | 1998-12-25 | Fall prevention device for work at height |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3043733B1 (en) |
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| KR101176908B1 (en) | 2010-10-14 | 2012-08-30 | 경원인더스트리(주) | Self retracting lifeline |
| JP2013010580A (en) * | 2011-06-28 | 2013-01-17 | Toshiba Elevator Co Ltd | Rope attaching jig |
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| WO2014119805A1 (en) * | 2013-01-29 | 2014-08-07 | Wang Jong Mun | Descending device with safety rope |
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1998
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|---|---|---|---|---|
| KR101176908B1 (en) | 2010-10-14 | 2012-08-30 | 경원인더스트리(주) | Self retracting lifeline |
| JP2013010580A (en) * | 2011-06-28 | 2013-01-17 | Toshiba Elevator Co Ltd | Rope attaching jig |
| KR101319445B1 (en) | 2011-07-29 | 2013-10-17 | 왕종문 | Safty rope and descender device |
| WO2014119805A1 (en) * | 2013-01-29 | 2014-08-07 | Wang Jong Mun | Descending device with safety rope |
| US10971988B2 (en) | 2014-08-18 | 2021-04-06 | Eddy Current Limited Partnership | Latching devices |
| US11735992B2 (en) | 2014-08-18 | 2023-08-22 | Eddy Current Limited Partnership | Tuning of a kinematic relationship between members |
| US11632016B2 (en) | 2014-08-18 | 2023-04-18 | Eddy Current Limited Partnership | Tuning of a kinematic relationship between members |
| US11515776B2 (en) | 2014-08-18 | 2022-11-29 | Eddy Current Limited Partnership | Tuning of a kinematic relationship between members |
| US10873242B2 (en) | 2014-08-18 | 2020-12-22 | Eddy Current Limited Partnership | Tuning of a kinematic relationship between members |
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| US11316404B2 (en) | 2014-08-18 | 2022-04-26 | Eddy Current Limited Partnership | Tuning of a kinematic relationship between members |
| US10774887B2 (en) | 2014-12-04 | 2020-09-15 | Eddy Current Limited Partnership | Latch activation between members |
| US10940339B2 (en) | 2014-12-04 | 2021-03-09 | Eddy Current Limited Partnership | Energy absorbing apparatus |
| US11050336B2 (en) | 2014-12-04 | 2021-06-29 | Eddy Current Limited Partnership | Methods of altering eddy current interactions |
| US11114930B2 (en) | 2014-12-04 | 2021-09-07 | Eddy Current Limited Partnership | Eddy current brake configurations |
| JP2022028909A (en) * | 2014-12-04 | 2022-02-16 | エディ・カーレント・リミテッド・パートナーシップ | Latch activation between elements |
| KR102681482B1 (en) * | 2014-12-04 | 2024-07-04 | 에디 커런트 리미티드 파트너쉽 | Latch activation between elements |
| KR20220083840A (en) * | 2014-12-04 | 2022-06-20 | 에디 커런트 리미티드 파트너쉽 | Latch activation between elements |
| US11992713B2 (en) | 2014-12-04 | 2024-05-28 | Eddy Current Limited Partnership | Energy absorbing apparatus |
| US11499596B2 (en) | 2014-12-04 | 2022-11-15 | Eddy Current Limited Partnership | Latch activation between members |
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| JP2018505634A (en) * | 2014-12-04 | 2018-02-22 | エディ・カーレント・リミテッド・パートナーシップ | Latch activation between elements |
| US11777391B2 (en) | 2014-12-04 | 2023-10-03 | Eddy Current Limited Partnership | Methods of altering eddy current interactions |
| US11009089B2 (en) | 2014-12-04 | 2021-05-18 | Eddy Current Limited Partnership | Latch activation between members |
| US11878651B2 (en) | 2015-12-18 | 2024-01-23 | Eddy Current Limited Partnership | Variable behavior control mechanism for a motive system |
| US10953848B2 (en) | 2015-12-18 | 2021-03-23 | Eddy Current Limited Partnership | Variable behavior control mechanism for a motive system |
| TWI701060B (en) * | 2019-05-20 | 2020-08-11 | 劉致廷 | Safety switch |
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| Publication number | Publication date |
|---|---|
| JP3043733B1 (en) | 2000-05-22 |
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