JPS641692Y2

JPS641692Y2 -

Info

Publication number: JPS641692Y2
Application number: JP4107681U
Authority: JP
Priority date: 1981-03-23
Filing date: 1981-03-23
Publication date: 1989-01-17
Also published as: JPS57154010U

Description

【考案の詳細な説明】本考案は機構を簡素化して生産性を向上させ、
補修点検も容易に成した昇降装置に係る。[Detailed description of the invention] This invention simplifies the mechanism and improves productivity.
This relates to a lifting device that is easy to repair and inspect.

本考案を実施例にもとづいて説明すれば、図面
において、１は合成樹脂で成形した有底筒状のカ
バーであり、底面に軸支孔２を有する。３はシヤ
フトであり、その一端を軸支孔２に軸支してい
る。４はゼンマイバネで、シヤフト３の外周に挿
通してあり、図示しない内周端はシヤフト３の切
溝５に挿入され、やはり図示しない外周端は後述
の巻取リールの内周面に係止され、この巻取リー
ルに回動復帰力を与えている。６は巻取リール
で、シヤフト３の外周に挿通する。７，７′はこ
の巻取リールに巻装したワイヤーである。８〜１
２はラチエツト機構で、いづれもシヤフト３の外
周に挿通してあり、８はコイルバネ、９は移動回
転子、１０は回転子、１１，１２は摩擦板であ
る。移動回転子９は外周に突部１３を有し、巻取
リール６の内周面に軸方向に形成した移動溝１４
に収められ、コイルバネ８で軸方向に付勢してい
る。移動回転子９と回転子１０には各々係合爪１
５，１６を有し、互いにかみ合うようになつてい
る。摩擦板１１，１２は回転子１０をはさみ、シ
ヤフト３に回動不可能に装着している。１７は皿
バネ、１８はナツトで、いづれもシヤフト３に挿
通し、ナツト１８はシヤフト３の他端に螺合して
おり、ナツト１８の締付圧を皿バネ１７を介して
ラチエツト機構に伝達し、巻取リール６の回動力
を調節している。１９は軸支板で、ナツト１８を
挿通孔２０に挿通することにより、シヤフト３の
他端を軸支している。軸支板１９ともう一つの軸
支板２１は互いにねじ等で結合されて、ケース体
を成し、軸支板２１の長孔２２にシヤフト３の一
端が回動不可能に挿通され、Ｅリング２３で取付
けている。２４，２５は巻取リール６の端面に取
着した補強板である。なお、シヤフト３の中央に
は大径部２６が有り、摩擦板１１の端面を当て止
めしている。 The present invention will be described based on an embodiment. In the drawings, reference numeral 1 denotes a bottomed cylindrical cover molded from synthetic resin, and has a shaft support hole 2 in the bottom surface. 3 is a shaft, one end of which is pivotally supported in the shaft support hole 2. Reference numeral 4 denotes a spiral spring, which is inserted through the outer periphery of the shaft 3.The inner periphery end (not shown) is inserted into the cut groove 5 of the shaft 3, and the outer periphery end (also not shown) is latched to the inner periphery of a take-up reel, which will be described later. , gives rotational return force to this take-up reel. A take-up reel 6 is inserted around the outer periphery of the shaft 3. 7 and 7' are wires wound around this take-up reel. 8-1
2 is a ratchet mechanism, which is inserted through the outer periphery of the shaft 3; 8 is a coil spring; 9 is a movable rotor; 10 is a rotor; and 11 and 12 are friction plates. The movable rotor 9 has a protrusion 13 on its outer circumference, and a movable groove 14 formed in the axial direction on the inner circumferential surface of the take-up reel 6.
It is housed in a coil spring 8 and biased in the axial direction. The movable rotor 9 and the rotor 10 each have an engaging claw 1.
5 and 16, and are designed to interlock with each other. The friction plates 11 and 12 sandwich the rotor 10 and are mounted on the shaft 3 so as not to rotate. 17 is a disc spring, and 18 is a nut, both of which are inserted into the shaft 3. The nut 18 is screwed onto the other end of the shaft 3, and the tightening pressure of the nut 18 is transmitted to the ratchet mechanism via the disc spring 17. The rotational force of the take-up reel 6 is adjusted. Reference numeral 19 denotes a shaft support plate which pivotally supports the other end of the shaft 3 by inserting the nut 18 into the insertion hole 20. The shaft support plate 19 and the other shaft support plate 21 are connected to each other with screws or the like to form a case body, and one end of the shaft 3 is inserted into the elongated hole 22 of the shaft support plate 21 in a non-rotatable manner. It is attached with ring 23. 24 and 25 are reinforcing plates attached to the end surface of the take-up reel 6. Note that there is a large diameter portion 26 in the center of the shaft 3, against which the end surface of the friction plate 11 rests.

この昇降装置の動作を、巻取リールから繰り出
したワイヤー７，７′の端部に物品を吊り下げた
例で説明する。物品を下降させるために、ワイヤ
ー７，７′を引張ると、巻取リール６が回転し、
その移動溝１４内に突部１３が収められている移
動回転子９が回転する。そして回転子９の前記の
回転方向に係合爪１５とかみ合う係合爪１６を有
する回転子１０が摩擦板１１，１２による摩擦力
に抗して回転する。また、このとき巻取リール６
の回転によつてゼンマイバネ４はシヤフト３に巻
き込まれる。 The operation of this elevating device will be explained using an example in which an article is suspended from the ends of wires 7, 7' fed out from a take-up reel. When the wires 7, 7' are pulled in order to lower the article, the take-up reel 6 rotates,
The movable rotor 9 in which the protrusion 13 is housed in the movable groove 14 rotates. The rotor 10, which has an engaging pawl 16 that engages with the engaging pawl 15 in the rotational direction of the rotor 9, rotates against the frictional force of the friction plates 11 and 12. Also, at this time, the take-up reel 6
The mainspring spring 4 is wound around the shaft 3 by the rotation of.

次にワイヤーに吊り下げられた物品を押し上げ
ると、ゼンマイバネ４が巻き込まれた分だけ元に
戻る力で巻取リール６が前とは逆方向に回転す
る。このときは移動回転子９の係合爪１５と回転
子１０の係合爪１６とはかみ合わないから、回転
子１０は回転しない。 Next, when the article suspended from the wire is pushed up, the take-up reel 6 rotates in the opposite direction from the previous direction due to the force of the spiral spring 4 returning to its original position by the amount of winding. At this time, the engaging claws 15 of the movable rotor 9 and the engaging claws 16 of the rotor 10 do not engage with each other, so the rotor 10 does not rotate.

なお、物品がワイヤーに安定した吊り下げ状態
を維持するには、その重量は、回転子１０を回転
させる力より小さく、かつゼンマイバネ４の巻き
戻し力より大きければよい。 Note that in order to maintain the stable hanging state of the article on the wire, its weight should be smaller than the force that rotates the rotor 10 and greater than the unwinding force of the spiral spring 4.

このような構成により本考案は、シヤフト３の
一端は軸支孔２で軸支されるとともに軸支板２１
に回動不可能に固定され、他端は軸支板１９に形
成した挿通孔２０内に挿通したナツト１８を介し
て軸支されるため、後者の構成が簡素化され、軸
支板１９を取着する前に必要な構成部品をすべて
有底筒状のカバー１内に収納でき、ナツト１８の
締付圧も調節できるため、生産性向上に寄与す
る。さらに、補修点検に際しても、ナツト１８を
はずすことなく機構部品を有底筒状のカバー１か
らとり出せるため、再組立において、再びナツト
１８の締付圧を調節する必要がないため、一般の
補修点検に有利な効果をもたらすものである。 With such a configuration, in the present invention, one end of the shaft 3 is pivotally supported by the shaft support hole 2, and the shaft support plate 21
Since the other end is pivotally supported via a nut 18 inserted into an insertion hole 20 formed in the shaft support plate 19, the latter configuration is simplified, and the shaft support plate 19 can be All the necessary components can be stored in the bottomed cylindrical cover 1 before installation, and the tightening pressure of the nut 18 can also be adjusted, contributing to improved productivity. Furthermore, even during repair inspections, the mechanical parts can be taken out from the bottomed cylindrical cover 1 without removing the nuts 18, so there is no need to adjust the tightening pressure of the nuts 18 again during reassembly. This has an advantageous effect on inspection.

[Brief explanation of drawings]

第１図は本考案の一実施例の昇降装置の分解斜
視図、第２図は同組立時半断面図、第３図は移動
回転子の斜視図である。１……カバー、２……軸支孔、３……シヤフ
ト、４……ゼンマイバネ、６……巻取リール、
７，７′……ワイヤー、８……コイルバネ、９…
…移動回転子、１０……回転子、１１，１２……
摩擦板、１３……突部、１４……移動溝、１５，
１６……係合爪、１７……バネ、１８……ナツ
ト、１９……軸支板、２０……挿通孔、２１……
軸支板。 FIG. 1 is an exploded perspective view of a lifting device according to an embodiment of the present invention, FIG. 2 is a half-sectional view of the same assembly, and FIG. 3 is a perspective view of a moving rotor. 1... Cover, 2... Pivot hole, 3... Shaft, 4... Spring spring, 6... Take-up reel,
7, 7'...Wire, 8...Coil spring, 9...
...Moving rotor, 10...Rotor, 11, 12...
Friction plate, 13...Protrusion, 14...Movement groove, 15,
16... Engaging claw, 17... Spring, 18... Nut, 19... Axial support plate, 20... Insertion hole, 21...
Axial support plate.

Claims

[Scope of utility model registration request]

A shaft supporting plate that is coupled to each other to form a case body, a bottomed cylindrical cover housed between these shaft supporting plates, and one end of which is pivotally supported in a shaft supporting hole on the bottom of the cover and attached to one of the shaft supporting plates. A shaft fixed in a non-rotatable manner, a take-up reel inserted around the outer periphery of the shaft, a wire wound around the take-up reel, an inner end locked to the shaft and an outer end fixed to the take-up reel. A spiral spring is engaged with the inner circumferential surface of the take-up reel and is wound up when the take-up reel rotates in the direction in which the wire is fed out; a movable rotor that is housed in a movable groove provided in the shaft and rotates together with the take-up reel; a rotor provided with an engaging pawl that engages with the mating pawl; a coil spring that presses the movable rotor against the rotor; a pair of friction plates that are unrotatably mounted on the shaft and sandwich the rotor; a nut that is screwed onto the other end of the shaft and adjusts the spring pressure that presses the friction plate against the rotor; and a nut that is formed on the other side of the shaft support plate and is inserted through the nut so as to be exposed to the outside to provide the shaft support. A lifting device equipped with an insertion hole.