JPH03161814A - Rotary lock device - Google Patents
Rotary lock deviceInfo
- Publication number
- JPH03161814A JPH03161814A JP30177889A JP30177889A JPH03161814A JP H03161814 A JPH03161814 A JP H03161814A JP 30177889 A JP30177889 A JP 30177889A JP 30177889 A JP30177889 A JP 30177889A JP H03161814 A JPH03161814 A JP H03161814A
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- JP
- Japan
- Prior art keywords
- coil spring
- coil
- spring
- force
- rotation
- 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.)
- Pending
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- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 62
- 230000000994 depressogenic effect Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はコイルばねのコイル締付力により生じた摩擦力
で回転体の回転をロックする回転ロック装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotation locking device that locks the rotation of a rotating body using a frictional force generated by a coil tightening force of a coil spring.
［従来の技術］
このような回転ロック装置としては、従来第７図に示す
回転ロック装置１００がある。[Prior Art] As such a rotation lock device, there is a conventional rotation lock device 100 shown in FIG.
この回転ロック装置１００は、ベースとなる部品（図示
せず）に固定された固定芯金１０１と、この固定芯金１
０１に回転自在に軸支された可動芯金１０２と、上記固
定芯金１０１と可動芯金１０２とに亘って密接状態で外
挿されたコイルばね１０３とから構成されている。This rotation lock device 100 includes a fixed core bar 101 fixed to a base component (not shown), and a fixed core bar 101 fixed to a base component (not shown).
The movable core metal 102 is rotatably supported by the core metal 102, and a coil spring 103 is inserted in a tight state between the fixed core metal 101 and the movable core metal 102.
固定芯金１０１は固定軸部１０１ａと、この固定軸部１
０１ａの端部に一体形成された固定フランジ部１０ｌｂ
とを具備している。可動芯金１０２は、固定フランジ部
１０ｌｂと同一外径の可動軸部１０２ａと、この可動軸
部１ ０２ａの端部に一体形成された可動フランジ部１
０２ｂと、上記可動軸部１ ０２ａの軸芯部に軸方向
に穿設された貫通孔１ ０２ｃとを具備している。この
可動芯金１０２は貫通孔１ ０２ｃに固定軸部１０１ａ
を挿通させることによって固定芯金１０１に回転自在に
軸支されている。The fixed core bar 101 has a fixed shaft portion 101a and a fixed shaft portion 1.
Fixed flange portion 10lb integrally formed at the end of 01a
It is equipped with. The movable core bar 102 includes a movable shaft portion 102a having the same outer diameter as the fixed flange portion 10lb, and a movable flange portion 1 integrally formed at the end of the movable shaft portion 102a.
02b, and a through hole 102c bored in the axial direction at the axial center of the movable shaft portion 102a. This movable core bar 102 is fixed to the fixed shaft portion 101a in the through hole 102c.
is rotatably supported by the fixed core metal 101 by inserting the metal core 101 through the metal core 101.
コイルばね１０３は矩形断面の線材をコイリングして形
成されており、自由状態では第８図に示すように略中央
部を境にして右側が小径コイル部１０３ａ，左側が大径
コイル部１ ０３ｂに形成されていると共に、大径コイ
ル部１ ０３ｂのコイル内径は可動軸部１０２ａ （固
定フランジ部１０ｌｂ）の外径よりも小さくなるように
形成されている。コイルばね１０３はコイル部を拡径し
て小径コイル部１ ０３ａを固定フランジ部］． ０
１ ｂに外挿すると共に大径コイル部１０３ｂを可動軸
部１０２ａに外挿することによって、固定芯金１０１と
可動芯金１０２に締め代をもった密接状態で外挿されて
いる。コイルばね１０３の両端部の内、小径コイル部１
０３ａ側の端部１０３Ｃは固定フランジ部１０ｌｂに
形威した切欠き１０１ｃに係止されており、大径コイル
部１０３ｂ側の端部１ ０３ｄは自由端となっている。The coil spring 103 is formed by coiling a wire rod with a rectangular cross section, and in a free state, as shown in FIG. 8, the right side is a small diameter coil part 103a and the left side is a small diameter coil part 103b, with the approximate center as a boundary. At the same time, the inner diameter of the large diameter coil portion 103b is smaller than the outer diameter of the movable shaft portion 102a (fixed flange portion 10lb). The coil spring 103 has a coil portion expanded in diameter and a small diameter coil portion 103a fixed to a fixed flange portion]. 0
By extrapolating the large diameter coil portion 103b onto the movable shaft portion 102a, the fixed core metal 101 and the movable core metal 102 are inserted in close contact with each other with an interference margin. Small diameter coil portion 1 of both ends of coil spring 103
The end 103C on the 03a side is engaged with a notch 101c formed in the fixed flange 10lb, and the end 103d on the large diameter coil 103b side is a free end.
このように構成された回転ロック装置１００は、可動芯
金１０２がコイルばね１０３の巻締め方向へ回転しよう
とする大径コイル部１０３ｂの締付力により生じた摩擦
力が増大して上記方向の回転がロックされる。このロッ
ク解除はコイルばね１０３の自由端部１ ０３ｄをコイ
ルばね１０３の巻戻し方向へ移動することによって行わ
れ、これにより可動芯金１０２をコイルばね１０３の巻
締め方向へ回転することができる。また、可動芯金１０
２がコイルばね１０３の巻戻し方向へ回転するときは、
大径コイル部１ ０３ｂの締付力により生じた摩擦力は
減少して、上記方向の回転がスムーズに行われる。In the rotation locking device 100 configured in this way, the frictional force generated by the tightening force of the large diameter coil portion 103b when the movable core metal 102 tries to rotate in the tightening direction of the coil spring 103 increases, Rotation is locked. This unlocking is performed by moving the free end 103d of the coil spring 103 in the direction of unwinding the coil spring 103, thereby allowing the movable core bar 102 to rotate in the direction of tightening the coil spring 103. In addition, the movable core metal 10
2 rotates in the unwinding direction of the coil spring 103,
The frictional force generated by the clamping force of the large-diameter coil portion 103b is reduced, and rotation in the above direction is performed smoothly.
［発明が解決しようとする課題］
しかしながら、回転ロック装置１００は可動芯金１０２
を逆転（コイルばね１０３の巻戻し方向の回転）から正
転（コイルばね１０３の巻締め方向の回転）に連続動作
させると、正転への変化時に瞬時に可動芯金１０２の回
転をロックすることができず、ある角度回転した後ロッ
クされると云う“遊び”が生じて問題となっていた。[Problems to be Solved by the Invention] However, the rotation locking device 100 has a movable core bar 102.
When continuously operated from reverse rotation (rotation in the unwinding direction of the coil spring 103) to forward rotation (rotation in the tightening direction of the coil spring 103), the rotation of the movable core bar 102 is instantly locked when changing to the normal rotation. This caused a problem of "play" in which the shaft could not be rotated by a certain angle and then locked.
前記“遊び”は回転ロック装置１００の次の様な作動に
よって生じる。The "play" is caused by the following operation of the rotation locking device 100.
コイルばね１０３は可動芯金１０２．及び固定芯金１０
１に締めじろをもって密接状態で外挿されているため、
可動芯金１０２がわずかに逆転すると上記締めしるによ
る摩擦力によりコイルばね１０３が同方向に捩じられる
。このときコイルばね１０３の固定フランジ部１０ｌｂ
の外挿部分（小径コイル部１０３ａ）は可動芯金１０２
側よりも大きい締しろで外挿されているため、小径コイ
ル部１ ０３ａは固定フランジ部１０ｌｂに巻付いたま
まであるが、固定フランジ部１０ｌｂと可動軸部１ ０
２ａとの境目にあるコイルＣ＋が前記捩じられた分だけ
コイル径が拡がる（第９図（ａ）参照）。この径の拡が
ったコイルＣ１は捩りコイルばねとして働き、可動軸部
１０２ａに密着した大径コイル部１０３ｂを巻締め方向
に回動させようとするが、大径コイル部１ ０３ｂと可
動軸部１０２ａとの間に生じる摩擦力の方が大きいため
回動させることができきず、コイルＣＩは径の拡がった
状態で残る。The coil spring 103 has a movable core metal 102. and fixed core metal 10
Since it is extrapolated in a close state with a margin of 1,
When the movable core metal 102 is slightly reversed, the coil spring 103 is twisted in the same direction due to the frictional force caused by the tightening. At this time, the fixed flange portion 10lb of the coil spring 103
The extrapolated part (small diameter coil part 103a) is the movable core metal 102
Since the small diameter coil part 103a remains wrapped around the fixed flange part 10lb because it is inserted with a larger interference margin than the side, the fixed flange part 10lb and the movable shaft part 103a remain wrapped around the fixed flange part 10lb.
The coil diameter of the coil C+ at the boundary with 2a increases by the amount of twisting (see FIG. 9(a)). This enlarged diameter coil C1 works as a torsion coil spring and tries to rotate the large diameter coil part 103b that is in close contact with the movable shaft part 102a in the tightening direction, but the large diameter coil part 103b and movable shaft part 102a Since the frictional force generated between the coil CI and the coil CI is larger, the coil CI cannot be rotated, and the coil CI remains with its diameter expanded.
さらに可動芯金１０２を逆転させると最初に径の拡がっ
たコイルＣ１の左側のコイルＣ２・・・ｃｏも順次径が
拡がった状態となる（第９図（ｂ）．（Ｃ）参照）。こ
のようにコイル径の拡がり現象は可動芯金１０２の逆転
にともない進行し、最終的にはコイルばね１０３と可動
芯金１０２の密接した部分で発生する摩擦力と、径の拡
がったコイルＣ，，Ｃ２・・・Ｃ２の捩りトルクとが釣
り合ったところで止まり、可動芯金１０２はコイルばね
１０３との間でスリップを生じて逆転する。Further, when the movable core metal 102 is reversed, the diameters of the coils C2...co on the left side of the coil C1 whose diameter has expanded first are also gradually expanded (see FIGS. 9(b) and 9(c)). In this way, the phenomenon of expanding the coil diameter progresses as the movable core metal 102 reverses, and eventually the friction force generated between the coil spring 103 and the movable core metal 102 in close contact with each other, and the coil C whose diameter has expanded, , C2...C2 stops when the torsional torques of C2 are balanced, and the movable core metal 102 generates a slip between it and the coil spring 103 and reverses.
上記コイル径が拡がった状態は可動芯金１０２の逆転時
及び停止時にも維持される。The state in which the coil diameter is expanded is maintained even when the movable core metal 102 is reversed and stopped.
次に可動芯金１０２が正転するとき、可動芯金１０２は
正転への稼動時に瞬時にロックされずにコイル径の拡が
ったコイルＣ ＋ ， Ｃ ２・・・ｃｏが可動芯金１
０２に密接するまで正転する。これが前記した゛′遊び
゜゛となる。Next, when the movable core metal 102 rotates in the normal direction, the movable core metal 102 is not instantly locked during normal rotation, and the coils C + , C 2 .
Rotate forward until it approaches 02. This becomes the ``play'' mentioned above.
本発明は前記した事情に鑑みてなされたものであり、そ
の目的は逆転から正転へ連続動作する際、遊びのないロ
ックカを得ることを可能にした回転ロック装置を提供す
るにある。The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a rotation locking device that makes it possible to obtain a locking force without play during continuous operation from reverse rotation to forward rotation.
［課題を解決するための手段］
前記目的を達成するため本発明はコイルばねのコイル締
付力により生じた摩擦力で回転体の回転をロックする装
置において、上記コイルばねがコイル径方向に緊縛力を
生じる弾性部材で覆われていることを特徴としている。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a device for locking the rotation of a rotating body by a frictional force generated by a coil clamping force of a coil spring, in which the coil spring is constrained in the coil radial direction. It is characterized by being covered with an elastic member that generates force.
前記弾性部材は定荷重型ぜんまい、又はＣ型リングであ
っても良い。The elastic member may be a constant force spring or a C-shaped ring.
また、前記Ｃ型リングは中央部から両端部に向かって板
厚を漸次薄くして形戊したものであっても良い。Further, the C-shaped ring may be shaped so that the plate thickness gradually decreases from the center toward both ends.
［作用］
回転体をコイルばねの巻戻し方向へ回転させたときのコ
イルばねのコイルの部分的な拡径は弾性部材の緊縛力に
より阻止される。このためコイルばねは回転体のコイル
ばねの巻戻し方向への回転の際も回転体に密接しており
、回転体はコイルばねとの間に滑りを生じて同方向へ回
転する。この回転の後回転体がコイルばねの巻締め方向
へ回転しようとするとコイルばねのコイル締付力により
生じた摩擦力で同方向への回転は瞬時にロックされる。[Operation] When the rotating body is rotated in the direction in which the coil spring is unwound, the partial diameter expansion of the coil of the coil spring is prevented by the binding force of the elastic member. Therefore, the coil spring is in close contact with the rotating body even when the rotating body rotates in the unwinding direction of the coil spring, and the rotating body rotates in the same direction with slippage between the rotating body and the coil spring. After this rotation, when the rotary body attempts to rotate in the tightening direction of the coil spring, the rotation in the same direction is instantly locked due to the frictional force generated by the coil tightening force of the coil spring.
また、上記の回転ロックを解除するにはコイルばねの自
由端にコイルばねの巻戻し方向の外力を加えて弾性部材
の緊縛力に抗してコイルを拡径することによって行なう
ことができ、これによって回転体はコイルばねの巻締め
方向へも回転可能となる。In addition, the rotation lock described above can be released by applying an external force to the free end of the coil spring in the direction of unwinding the coil spring to expand the diameter of the coil against the binding force of the elastic member. This allows the rotating body to rotate also in the direction in which the coil spring is tightened.
弾性部材として定荷重型ぜんまいを用いることによって
、コイルばねに対する緊縛力はコイルばねの外周に沿っ
て均一に作用する。By using a constant force spring as the elastic member, the binding force on the coil spring acts uniformly along the outer periphery of the coil spring.
弾性部材としてＣ型リングをも用いることができ、この
リングの緊縛力によってコイルばねのコイルの部分的な
拡径を阻止することができる。A C-shaped ring can also be used as the elastic member, and the binding force of this ring can prevent the coil of the coil spring from partially expanding in diameter.
また、前記Ｃ型リングを中央部から両端部に向かって板
厚を漸次薄くして形成することによって、コイルばねに
被榎されたときの緊縛力がコイルに沿って均一に作用す
る。Furthermore, by forming the C-shaped ring so that the plate thickness is gradually thinned from the center toward both ends, the binding force applied uniformly along the coil when the coil spring is engaged.
［実施例コ
以下、本発明を図示した実施例に基づいて具体的に説明
する。[Example] The present invention will be specifically described below based on an illustrated example.
第１図は本発明の第１実施例である回転ロック装置１を
示す。この回転ロック装置１は固定芯金２と、この固定
芯金２に回転自在に軸支された可動芯金３と、上記固定
芯金２と可動芯金３とに亘って密接状態で外挿されたコ
イルばね４とからなる基本構造を有している。FIG. 1 shows a rotation locking device 1 which is a first embodiment of the present invention. This rotation locking device 1 includes a fixed core metal 2, a movable core metal 3 that is rotatably supported by the fixed core metal 2, and a movable core metal 3 that is closely inserted between the fixed core metal 2 and the movable core metal 3. It has a basic structure consisting of a coiled spring 4.
この基本構造は前述した従来の回転ロック装置１００と
同一構造となっており、固定芯金２，可動芯金３，及び
コイルばね４はそれぞれ固定芯金１０１，可動芯金１０
２，及びコイルばね１０３に対応するものであるから、
これらの説明は重複するので省略する。This basic structure is the same as the conventional rotation lock device 100 described above, and the fixed core bar 2, the movable core bar 3, and the coil spring 4 are the fixed core bar 101 and the movable core bar 10, respectively.
2, and the coil spring 103, so
These explanations are redundant and will therefore be omitted.
回転ロツク装置１は上記した基本構造のコイルばね４に
密接状態で外挿された定荷重型ぜんまい５を具備してい
る。定荷重型ぜんまい５は第２図（ａ）に示すように自
由状態で芯金２．３に組込んだコイルばね４の外径より
も小さい内径ｄを有して巻回形成されている。このため
定荷重型ぜんまい５は内径を拡径してコイルばね４に外
挿され、外挿後はコイルばね４に密接する。また定荷重
型ぜんまい５は全長に亘って同一曲率に加工されている
ため、内径を拡げると第２図（ｂ）に示すように内側へ
押しつける力Ｆが全周に亘って均一に発生する。このた
め、コイルばね４に外挿された定荷重型ぜんまい５はコ
イルばね４をその外周に沿って均一に作用する緊縛力で
押え込んでいる。本実施例ではコイルばね４の可動芯金
３を覆っているコイル部の大部分と固定芯金２を覆って
いるコイル部の僅かの部分とが定荷重型ぜんまい５で覆
われている。The rotary lock device 1 is equipped with a constant force mainspring 5 which is closely fitted onto the coil spring 4 of the above-described basic structure. As shown in FIG. 2(a), the constant force mainspring 5 is wound so as to have an inner diameter d smaller than the outer diameter of the coil spring 4 assembled in the core bar 2.3 in a free state. For this reason, the constant force type mainspring 5 has its inner diameter enlarged and is inserted over the coil spring 4, and is brought into close contact with the coil spring 4 after being inserted. Furthermore, since the constant force mainspring 5 is machined to have the same curvature over its entire length, when the inner diameter is expanded, the force F pushing it inward is generated uniformly over the entire circumference, as shown in FIG. 2(b). Therefore, the constant force mainspring 5 fitted onto the coil spring 4 holds down the coil spring 4 with a binding force that acts uniformly along its outer periphery. In this embodiment, most of the coil portion of the coil spring 4 that covers the movable core metal 3 and a small portion of the coil portion that covers the fixed core metal 2 are covered by a constant force mainspring 5.
このため、可動芯金３のコイルばね４の巻戻し方向の回
転の際に可動芯金３と固定芯金２との境目から可動芯金
３側に起るコイルばね４のコイル拡径現象は定荷重型ぜ
んまい５の緊縛力で阻止され、同方向の可動芯金３の回
転中でも可動芯金３上にあるコイルばね４は可動芯金３
に密接している。可動芯金３はコイルばね４との間で滑
りを生じて同方向へ回転する。Therefore, when the coil spring 4 of the movable core metal 3 rotates in the unwinding direction, the coil diameter expansion phenomenon of the coil spring 4 that occurs from the boundary between the movable core metal 3 and the fixed core metal 2 to the movable core metal 3 side is prevented. The coil spring 4 on the movable core bar 3 is prevented by the binding force of the constant force spring 5, and the coil spring 4 on the movable core bar 3 is prevented even when the movable core bar 3 rotates in the same direction.
is closely related to The movable core metal 3 causes slippage between the coil spring 4 and rotates in the same direction.
このように可動芯金３上にあるコイルね４は常に密接状
態にあるので、可動芯金３がコイルばね４の巻締め方向
へ回転しようとするとコイルばね４の締付力による摩擦
力で瞬時にロックされる。In this way, the coil spring 4 on the movable core metal 3 is always in a close state, so when the movable core metal 3 tries to rotate in the direction of tightening the coil spring 4, the friction force caused by the tightening force of the coil spring 4 causes an instantaneous movement. is locked.
このロック解除はコイルばね４の自由端４ａにコイルば
ね４の巻戻し方向の外力を加えて定荷重型ぜんまい５の
緊縛力に抗してコイルを拡径することによって容易に行
なうことができる。定荷重型ぜんまい５で覆われた全コ
イルは均等に拡径するためロック解除はスムーズに行わ
れる。This lock release can be easily performed by applying an external force in the direction of unwinding the coil spring 4 to the free end 4a of the coil spring 4 to expand the diameter of the coil against the binding force of the constant force mainspring 5. Since all the coils covered by the constant force mainspring 5 expand in diameter evenly, unlocking is performed smoothly.
これによって可動芯金３はコイルばねの巻締め方向へも
回転可能となる。This allows the movable core metal 3 to rotate also in the direction in which the coil spring is tightened.
定荷重型ぜんまい５の緊縛力は、板厚，板巾曲率．並び
に巻き数により増減させることができるため、制御が容
易であり、所望の作動が得られる回転ロック装置１を容
易に設計することができる。The binding force of the constant load type mainspring 5 depends on the plate thickness, plate width curvature. In addition, since the number of turns can be increased or decreased by changing the number of turns, the rotation locking device 1 can be easily controlled and can easily design a rotation locking device 1 that can obtain a desired operation.
第３図は本発明の第２実施例である回転ロック装置１０
を示す。FIG. 3 shows a rotation locking device 10 according to a second embodiment of the present invention.
shows.
１１
この回転ロツク装置１０は回転ロック装置１の定荷重型
ぜんまい５に替えてＣ型リング１１を用いており、他の
構造は回転ロック装置１と同一構造を有しているので、
同一構成要素は同一符号を付してその説明を省略する。11 This rotary lock device 10 uses a C-shaped ring 11 in place of the constant force spring 5 of the rotary lock device 1, and the other structure is the same as that of the rotary lock device 1.
Identical components are given the same reference numerals and their explanations will be omitted.
Ｃ型リング１１は中央部１１ａから両端部１ｌｂ，ｌｌ
ｂに向かって漸次薄くなる弾性板を湾曲して形成されて
いる。このＣ型リング１１は自由状態（第４図の２点鎖
線）で芯金２．３に組込んだコイルばね４の外径よりも
小さい内径ｄ１を有して湾曲形成される。このためＣ型
リング１１は拡径して（第４図の実線）芯金２．３に組
込んだコイルばね４に外挿され、外挿された後はコイル
ばね４に密接される。Ｃ型リング１１は上記した板厚形
状となっているのでコイルばね４に外挿された後はコイ
ルばね４のコイルに沿って均一な緊縛力が作用し、コイ
ルばね４を押え込む。The C-shaped ring 11 extends from the center 11a to both ends 1lb, ll.
It is formed by curving an elastic plate that gradually becomes thinner toward b. This C-shaped ring 11 is curved and has an inner diameter d1 smaller than the outer diameter of the coil spring 4 assembled in the core metal 2.3 in a free state (double-dashed line in FIG. 4). For this purpose, the C-shaped ring 11 is expanded in diameter (solid line in FIG. 4) and is inserted over the coil spring 4 incorporated into the core bar 2.3, and is brought into close contact with the coil spring 4 after being inserted. Since the C-shaped ring 11 has the above-mentioned plate thickness shape, after being fitted onto the coil spring 4, a uniform binding force acts along the coil of the coil spring 4, and holds the coil spring 4 down.
このＣ型リング１１はコイルばね４の可動芯金３上のコ
イル部全部と固定芯金２上の僅かの部分とに外挿されて
いるので、可動芯金３のコイルばね４の巻戻し方向の回
転の際に可動芯金３と固定芯金２との境目から可動芯金
３側に起るコイルばね４のコイル拡径現象がＣ型リング
１１の緊縛力で阻止される。Since this C-shaped ring 11 is fitted over the entire coil portion of the movable core bar 3 of the coil spring 4 and a small portion of the fixed core bar 2, the direction in which the coil spring 4 of the movable core bar 3 is unwound is The binding force of the C-shaped ring 11 prevents the coil diameter of the coil spring 4 from expanding from the boundary between the movable core metal 3 and the fixed core metal 2 toward the movable core metal 3 during rotation.
この回転ロック装置１０は前述した回転ロック装置１と
同様に可動芯金３はコイルばね４の巻戻し方向の回転に
際してはコイルばね４との間で滑りを生じて回転し、一
方コイルばね４の巻締め方向へ回転しようとすると、Ｃ
型リング１１の緊縛力により可動芯金３上に常に全コイ
ルが密接しているコイルばね４の作用により遊びを生じ
ることなく瞬時に同方向の回転がロックされる。このロ
ック解除は回転ロック装置１と同様にして行ない、可動
芯金３のコイルばね４の巻締め方向への回転が可能とな
る。In this rotation locking device 10, similarly to the rotation locking device 1 described above, the movable core bar 3 rotates with slippage between the coiled spring 4 and the coiled spring 4 when the coiled spring 4 rotates in the unwinding direction. When trying to rotate in the tightening direction, C
Due to the binding force of the mold ring 11, rotation in the same direction is instantly locked without any play due to the action of the coil spring 4, which keeps all the coils in close contact with the movable core metal 3 at all times. This lock release is performed in the same manner as in the rotation locking device 1, and the movable core metal 3 can be rotated in the tightening direction of the coil spring 4.
このＣ型リング１１は上記した板厚形状にすることが望
ましいが、均一な板厚で湾曲形成したものでも当初の目
的を達成することができる。Although it is desirable that the C-shaped ring 11 has the above-mentioned thickness shape, it is also possible to achieve the original purpose even if the C-shaped ring 11 is curved and has a uniform thickness.
第５図は本発明の第３実施例である回転ロック装置２０
を示す。FIG. 5 shows a rotation locking device 20 according to a third embodiment of the present invention.
shows.
この回転ロック装置２０は前述した回転ロック装置ｌＯ
のＣ型リング１１の変化例を示し、他の構造は回転ロッ
ク装置１０と同一構造となっている。This rotation lock device 20 is the rotation lock device lO described above.
The other structure is the same as the rotation locking device 10.
回転ロツク装置２０のＣ型リング２１は板厚一定のＣ型
リング２２．２３を各リングの割れ目２２ａ，２３ａが
正反対の位置にくるように重合させたものである。この
ようにＣ型リング２２，２３を重合させることによって
、Ｃ型リング２１の求心方向の緊縛力は内周方向に沿っ
て均一に得られる。The C-shaped ring 21 of the rotary lock device 20 is made by superposing C-shaped rings 22 and 23 of constant thickness so that the cracks 22a and 23a of each ring are at exactly opposite positions. By superimposing the C-shaped rings 22 and 23 in this manner, the binding force in the centripetal direction of the C-shaped ring 21 can be uniformly obtained along the inner circumferential direction.
尚、Ｃ型リング２２，及び２３には相互に位置ずれを起
さないように各リングの割れ目２３ａ及び２２ａに挿入
される突起２２ｂ及び２３ｂが形成されている。Incidentally, protrusions 22b and 23b are formed on the C-shaped rings 22 and 23 to be inserted into the cracks 23a and 22a of each ring so as not to cause mutual displacement.
このＣ型リング２１は芯金２．３に組込まれたコイルば
ね４に拡径されて外挿されて、コイルばね４を押え込み
、可動芯金３のコイルばね４の巻戻し方向の回転の際に
生じるコイルの拡径現象を阻止する。This C-shaped ring 21 is expanded in diameter and inserted into the coil spring 4 incorporated in the core bar 2.3, and presses down the coil spring 4 when the movable core bar 3 rotates in the unwinding direction of the coil spring 4. This prevents the coil from expanding in diameter.
このように回転ロック装置２０も回転ロック装置１０と
同様に作動する。In this way, the rotation lock device 20 also operates in the same manner as the rotation lock device 10.
第６図は本発明をパーキングブレーキ装置に応用した回
転ロック装置３０を示す。FIG. 6 shows a rotation lock device 30 in which the present invention is applied to a parking brake device.
回転ロック装置３０はパーキングブレーキ装置のべダル
プレート４０の回転中心部位に設けられている。The rotation lock device 30 is provided at the rotation center of the pedal plate 40 of the parking brake device.
回転ロック装置３０はブラケット４１．４２内に固定さ
れたセンタービン４３に回転自在に軸支された可動芯金
３１と、この可動芯金３１に隣接させて上記センタービ
ン４３に固定した固定芯金３２と、上記可動芯金３ｌと
固定芯金３２に亘って密接状態で外挿されたコイルばね
３３と、このコイルばね３３に密接状態で外挿された定
荷重型ぜんまい３４とから大略構成されている。The rotation locking device 30 includes a movable core bar 31 rotatably supported by a center bin 43 fixed within a bracket 41, 42, and a fixed core bar fixed to the center bin 43 adjacent to the movable core bar 31. 32, a coil spring 33 which is closely fitted over the movable core metal 3l and the fixed core metal 32, and a constant force mainspring 34 which is closely fitted to the coil spring 33. ing.
可動芯金３１はブレーキペダル４０に固定されており、
ブレーキペダル４０を足で踏むとブレーキペダル４０と
一体に回転するようになっている。このブレーキペダル
４０の先端にはブレーキケーブル４４の一端４４ａが枢
着されておりブレーキペダル４０の作動がブレーキケー
ブル４４の他端に連続しているブレーキ本体（図示せず
）に連動するようになっている。The movable core metal 31 is fixed to the brake pedal 40,
When the brake pedal 40 is depressed by the foot, it rotates together with the brake pedal 40. One end 44a of a brake cable 44 is pivotally connected to the tip of the brake pedal 40, so that the operation of the brake pedal 40 is linked to a brake body (not shown) connected to the other end of the brake cable 44. ing.
コイルばね３３は芯金３１．３２に対して締めじろをも
って密接外挿されており、一端３３ａは固定芯金３２に
係止され、他端３３ｂは定荷重型ぜんまい３４の外側に
回動自在に外挿されたレリーズカラー４５の切欠き４５
ａに係止されて装着されている。このレリーズカラ−４
５にはレリーズケーブル４６が連結されており、このレ
リーズケーブル４６を操作することによって外方よりコ
イルばね３３の他端３３ｂを操作することができるよう
になっている。The coil spring 33 is tightly fitted around the core metal 31, 32 with a tightening margin, one end 33a is locked to the fixed core metal 32, and the other end 33b is rotatable to the outside of the constant force type mainspring 34. Notch 45 of extrapolated release collar 45
It is attached and attached to a. This release color-4
5 is connected to a release cable 46, and by operating this release cable 46, the other end 33b of the coil spring 33 can be operated from the outside.
なお、第６図中、符号４７はクッション材であり、ペダ
ルプレート４ｏがブレーキ本体のリターンスプリング（
図示せず）で復帰したときのショックを吸収すると共に
、ペダルプレート４０の位置決めの役割をはたす。また
、図中、符号４８は軸受で可動芯金３ｌがスムーズに回
転するように可動芯金３１とセンタービン４３との間に
介１ ｂ
在している。In addition, in FIG. 6, reference numeral 47 is a cushioning material, and the pedal plate 4o is connected to the return spring (
(not shown) absorbs the shock when the pedal is returned to its original position, and also plays a role in positioning the pedal plate 40. Further, in the figure, reference numeral 48 denotes a bearing which is interposed between the movable core metal 31 and the center bin 43 so that the movable core metal 3l rotates smoothly.
次にこのパーキングブレーキ装置の作動を説明する。Next, the operation of this parking brake device will be explained.
まず、ブレーキ本体（図示せず）を作動させるためには
次の様にする。First, in order to operate the brake body (not shown), proceed as follows.
ペダルプレート４０を足で踏んでＡ矢印方向へ回動させ
るとブレーキケーブル４４が引出されてブレーキ本体は
ブレーキの掛った状態となる。ペダルプレート４０のＡ
矢印方向への回動は可動芯金３１のコイルばね３３の巻
戻し方向の回転となるので、可動芯金３１はコイルばね
３３との間に滑りを生じてスムーズに回転する。この可
動芯金３１の回転の際に可動芯金３１上にあるコイルば
ね３３は定荷重型ぜんまい３４で押え込まれているので
、コイルの拡径現象が起らず、常に全体が可動芯金３１
の外周面に密接している。When the pedal plate 40 is stepped on with the foot and rotated in the direction of arrow A, the brake cable 44 is pulled out and the brake body becomes in a braked state. A of pedal plate 40
Since the rotation in the direction of the arrow corresponds to the rotation of the movable core metal 31 in the unwinding direction of the coil spring 33, the movable core metal 31 generates a slip between the coil spring 33 and rotates smoothly. When the movable core metal 31 rotates, the coil spring 33 on the movable core metal 31 is held down by the constant load type mainspring 34, so the diameter expansion phenomenon of the coil does not occur, and the entire movable core metal is always rotated. 31
is in close contact with the outer circumferential surface of the
ブレーキケーブル４４にはブレーキ本体のリターンスプ
リングにより常に引出し方向と反対方向（Ｃ矢印方向）
の引張力が作用しており、ブレーキペダル４０を元の位
置へ復帰させようとする力が作用している。The brake cable 44 is always connected in the opposite direction to the pull-out direction (in the direction of arrow C) due to the return spring of the brake body.
A tensile force is acting on the brake pedal 40, and a force is acting on the brake pedal 40 to return it to its original position.
このためブレーキペダル４０を踏込んだ後ペダル４０か
ら足を外すとブレーキペダル４０は元の位置へ復帰しよ
うとするが、この復帰の際の可動芯金３１の回転はコイ
ルばね３３の巻締め方向となるので、瞬時にロックされ
る。つまりブレーキペダル４０は足を外しても少しも戻
ることもなく踏込んだ位置で停止し、ブレーキの掛った
状態が維持できる。Therefore, when the brake pedal 40 is depressed and then removed from the pedal 40, the brake pedal 40 attempts to return to its original position, but the rotation of the movable core 31 during this return is in the direction of tightening the coil spring 33. Therefore, it will be locked instantly. In other words, even if the brake pedal 40 is released, the brake pedal 40 stops at the depressed position without returning to its original position, and the brake pedal 40 remains applied.
次にブレーキを解除するときは次の様にする。Next time you release the brake, do the following:
レリーズケーブル４６をＢ矢印方向へ引くと、レリーズ
カラ−４５がコイルばね３３の巻戻し方向へ回動する。When the release cable 46 is pulled in the direction of arrow B, the release collar 45 rotates in the direction in which the coil spring 33 is unwound.
このレリーズカラ−４５の回動により、コイルばね３３
の他端３３ｂは同方向に移動し、これによってコイルば
ね３３のコイル径が拡径し、可動芯金３１はコイルばね
３３の巻締め方向八回動可能となる。このときペダルプ
レート４０はブレーキケーブル４４を介してブレーキ本
体のリターンスプリングにより復帰方向へ付勢されてい
るのでペダルプレート４０は元の位置へ復帰する。これ
によってブレーキは解除される。This rotation of the release collar 45 causes the coil spring 33 to
The other end 33b moves in the same direction, thereby increasing the coil diameter of the coil spring 33, and the movable core metal 31 can move eight times in the tightening direction of the coil spring 33. At this time, the pedal plate 40 is urged in the return direction by the return spring of the brake body via the brake cable 44, so the pedal plate 40 returns to its original position. This releases the brake.
このパーキングブレーキ装置は可動芯金３１上にあるコ
イルばね３３のコイルの拡径現象がなく、可動芯金３ｌ
上に全体が常に密接されているので、可動芯金３１がコ
イルばね３３の巻締め方向へ回転しようとすると瞬時に
ロックされ、ブレーキペダル４０を戻りのない踏込んだ
位置で停止させ、ブレーキのききの一番高い所でブレー
キを維持することができる。In this parking brake device, there is no expansion phenomenon of the coil of the coil spring 33 on the movable core metal 31, and the movable core metal 3l
Since the entire body is always in close contact with the upper part, when the movable core metal 31 attempts to rotate in the direction of tightening the coil spring 33, it is instantly locked, stopping the brake pedal 40 at the depressed position with no return, and preventing the brake from being applied. The brakes can be maintained at the highest point of the wind.
［発明の効果］
以上述べたように本発明によれば、回転体の回転をロッ
クするコイルばねがコイルばねのコイル径方向に緊縛力
を生ずる弾性部材で覆われているので、回転体のコイル
ばねの巻戻し方向の回転によるコイルばねの極部的なコ
イルの拡径現象が阻止される。このため回転体上にある
コイルばねは常に全体が回転体に密接されているので、
回転体がコイルばねの巻締め方向へ回転しようとすると
コイルばねの締付力により瞬時にロックされ“遊び”を
生じることがない。[Effects of the Invention] As described above, according to the present invention, the coil spring that locks the rotation of the rotating body is covered with an elastic member that generates a binding force in the radial direction of the coil of the coil spring. This prevents a phenomenon in which the diameter of the coil in an extreme portion of the coil spring increases due to rotation in the unwinding direction of the spring. For this reason, the entire coil spring on the rotating body is always in close contact with the rotating body, so
When the rotating body tries to rotate in the direction of tightening the coil spring, it is instantly locked by the tightening force of the coil spring, and no "play" occurs.
第１図は本発明の第１実施例を示し、同図（ａ）は縦断
面図、同図（ｂ）は側面図、第２図は同上第１実施例に
用いた定荷重型ぜんまいを示し、同図（ａ）は自由状態
の正面図、同図（ｂ）は拡径状態の正面図、第３図は本
発明の第２実施例を示し、同図（ａ）は縦断面図、同図
（ｂ）は側面図、第４図は同上第２実施例に用いたＣ型
リングの正面図、第５図は本発明の第３実施例を示し、
同図（ａ）は縦断面図、同図（ｂ）は側面図、第６図は
本発明をパーキングブレーキ装置に用いた実施例を示し
、同図（ａ）は平面図、同図（ｂ）は（ａ）のＸ−Ｘ線
断面図、第７図は従来の回転ロック装置を示し、同図（
ａ）は縦断面図、同図（ｂ）は側面図、第８図は同上装
置に用いたコイルばねの縦断面図、第９図（ａ） ，
（ｂ） ． （ｃ）は同上装置の作動説明図である。
１，１０，２０．３０・・・回転ロック装置、２，３２
・・・固定芯金、
３．３１・・・可動芯金（回転体）、
４，３３・・・コイルばね、
■
９
５．３４・・・定荷重型ぜんまい、
１１．２１・・・Ｃ型リング。Figure 1 shows the first embodiment of the present invention, where (a) is a longitudinal sectional view, (b) is a side view, and Figure 2 shows the constant force mainspring used in the first embodiment. FIG. 3(a) is a front view in a free state, FIG. 3(b) is a front view in an enlarged diameter state, FIG. 3 shows a second embodiment of the present invention, and FIG. , FIG. 4 is a front view of the C-shaped ring used in the second embodiment, and FIG. 5 is a third embodiment of the present invention.
6(a) is a longitudinal sectional view, FIG. 6(b) is a side view, and FIG. 6 shows an embodiment in which the present invention is applied to a parking brake device. ) is a sectional view taken along the line X-X of (a), FIG. 7 shows a conventional rotation locking device, and the same figure (
a) is a longitudinal sectional view, FIG. 8(b) is a side view, FIG. 8 is a longitudinal sectional view of the coil spring used in the above device, FIG. 9(a),
(b). (c) is an explanatory diagram of the operation of the same device. 1,10,20.30...Rotation lock device, 2,32
...Fixed core metal, 3.31...Movable core metal (rotating body), 4,33...Coil spring, ■ 9 5.34...Constant load type mainspring, 11.21...C mold ring.
Claims (4)
回転体の回転をロックする装置において、上記コイルば
ねがコイル径方向に緊縛力を生じる弾性部材で覆われて
いることを特徴とする回転ロック装置。(1) A device that locks the rotation of a rotary body using a frictional force generated by a coil clamping force of a coil spring, characterized in that the coil spring is covered with an elastic member that generates a binding force in the radial direction of the coil. Rotation locking device.
徴とする請求項（１）記載の回転ロック装置。(2) The rotation locking device according to claim 1, wherein the elastic member is a constant force spring.
る請求項（１）記載の回転ロック装置。(3) The rotation lock device according to claim (1), wherein the elastic member is a C-shaped ring.
厚を漸次薄くして形成されていることを特徴とする請求
項（３）記載の回転ロック装置。(4) The rotation locking device according to claim (3), wherein the C-shaped ring is formed so that the plate thickness gradually decreases from the center toward both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30177889A JPH03161814A (en) | 1989-11-20 | 1989-11-20 | Rotary lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30177889A JPH03161814A (en) | 1989-11-20 | 1989-11-20 | Rotary lock device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03161814A true JPH03161814A (en) | 1991-07-11 |
Family
ID=17901060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30177889A Pending JPH03161814A (en) | 1989-11-20 | 1989-11-20 | Rotary lock device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03161814A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540071U (en) * | 1991-11-01 | 1993-05-28 | 黒石鉄工株式会社 | Foot-operated parking brake |
| JPH0632241U (en) * | 1992-09-29 | 1994-04-26 | 黒石鉄工株式会社 | Foot-operated parking brake |
| US5335563A (en) * | 1991-10-29 | 1994-08-09 | Kuroishi Iron Works Co., Ltd. | Foot-operated parking brakes for cars and one-way dampers for use therein |
| US5400883A (en) * | 1991-07-23 | 1995-03-28 | Nhk Spring Co., Ltd. | Rotation locking device |
-
1989
- 1989-11-20 JP JP30177889A patent/JPH03161814A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400883A (en) * | 1991-07-23 | 1995-03-28 | Nhk Spring Co., Ltd. | Rotation locking device |
| US5335563A (en) * | 1991-10-29 | 1994-08-09 | Kuroishi Iron Works Co., Ltd. | Foot-operated parking brakes for cars and one-way dampers for use therein |
| JPH0540071U (en) * | 1991-11-01 | 1993-05-28 | 黒石鉄工株式会社 | Foot-operated parking brake |
| JPH0632241U (en) * | 1992-09-29 | 1994-04-26 | 黒石鉄工株式会社 | Foot-operated parking brake |
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