JPH08252734A - Mechanical stopper - Google Patents
Mechanical stopperInfo
- Publication number
- JPH08252734A JPH08252734A JP5921795A JP5921795A JPH08252734A JP H08252734 A JPH08252734 A JP H08252734A JP 5921795 A JP5921795 A JP 5921795A JP 5921795 A JP5921795 A JP 5921795A JP H08252734 A JPH08252734 A JP H08252734A
- Authority
- JP
- Japan
- Prior art keywords
- rotating
- pin
- floating
- joint
- fixed
- 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
Links
Landscapes
- Machine Tool Units (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、回転テーブルのストッ
パ、モータのストッパ等として利用されるメカニカルス
トッパに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanical stopper used as a rotary table stopper, a motor stopper, or the like.
【0002】[0002]
【従来の技術】回転部を所定位置でストップさせる必要
がある場合には、ストッパが付設される。回転部の回転
領域が360°よりも小さい場合には、始端と終端に強
制的に回転部を停止させるピン等を突設しておけば足り
るが、回転部を360°を越えた回転位置に停止させた
い場合には、工夫を必要とする。そのための手法とし
て、従来、電気的・光学的な位置検出を行うものと、メ
カニカルにロックをかけるものとが知られている。2. Description of the Related Art A stopper is provided when it is necessary to stop a rotating portion at a predetermined position. When the rotation area of the rotating part is smaller than 360 °, it is sufficient to project a pin or the like for forcibly stopping the rotating part at the start end and the end, but the rotating part is placed at a rotating position exceeding 360 °. If you want to stop it, you need to devise it. As a method for that purpose, conventionally, a method of electrically / optically detecting a position and a method of mechanically locking the position are known.
【0003】前者は、回転部と一体に回転し得るように
遮光板を取り付けるとともに、回転部が一定角度回転し
た場合に遮光板が到来する位置に発光源と受光素子の組
み合わせからなるフォトセンサを配置しておく。そし
て、このフォトセンサの受光素子に入光する光が遮光板
によって遮断されたときに、電気的な制御系が働いて、
回転部を強制的にストップさせるようにしている。In the former, a light-shielding plate is attached so that it can rotate integrally with the rotating portion, and a photosensor including a combination of a light-emitting source and a light-receiving element is provided at a position where the light-shielding plate comes when the rotating portion rotates by a certain angle. Place it. Then, when the light entering the light receiving element of this photo sensor is blocked by the light blocking plate, the electrical control system operates,
The rotating part is forcibly stopped.
【0004】一方、後者は、図10〜図12に示すよう
に、回転部aが360°を越えて回転した位置に弛んだ
状態で紐bを待機させておき、この紐bに回転部aから
突出させた掛止突起cを巻きつかせて、該回転部aを強
制停止させるようにしている。On the other hand, in the latter, as shown in FIGS. 10 to 12, the cord b is made to stand by in a state where the cord b is slackened at a position where the cord a is rotated by more than 360 ° and the cord b is rotated by the cord a. The hooking protrusion c that is projected from is wound around to forcibly stop the rotating portion a.
【0005】[0005]
【発明が解決しようとする課題】ところが、前者の構成
によると、制御系が誤動作した場合に回転部をストップ
させることができない不都合があり、その上、外乱信号
により回転途中で回転部がストップする可能性もあっ
て、信頼性に乏しいという問題がある。However, according to the former configuration, there is an inconvenience that the rotating part cannot be stopped when the control system malfunctions, and furthermore, the rotating part stops during the rotation due to the disturbance signal. There is a possibility that it is not reliable.
【0006】また、後者の構成によると、回転部aを所
定位置に停止させるための調整、すなわち、紐bの張り
具合の調整に正確を期すことが困難であり、精度の高い
ストッパを構成することができないという欠点がある。Further, according to the latter configuration, it is difficult to make an adjustment for stopping the rotating portion a at a predetermined position, that is, an adjustment of the tension of the string b, and a highly accurate stopper is constructed. There is a drawback that you cannot do it.
【0007】本発明は、これらの不具合を有効に解消し
たメカニカルストッパを提供することを目的としてい
る。An object of the present invention is to provide a mechanical stopper which effectively eliminates these problems.
【0008】[0008]
【課題を解決するための手段】本発明は、かかる目的を
達成するために、次のような構成を採用したものであ
る。In order to achieve the above object, the present invention employs the following configuration.
【0009】すなわち、本発明に係るメカニカルストッ
パは、回転部の回転を一定の領域に制限するためのもの
であって、回転部に近接して対向配置される固定部と、
回転部及び固定部の間に配設される中間部と、中間部と
回転部の間を連結するとともに一定の遊動領域内におい
て両者の相対的な回転変位を許容する第1の継手部と、
中間部と固定部の間を連結するとともに一定の遊動領域
内において両者の相対的な回転変位を許容する第2の継
手部とを具備してなることを特徴とする。That is, the mechanical stopper according to the present invention is for limiting the rotation of the rotating portion to a fixed area, and includes a fixed portion which is arranged close to the rotating portion and faces each other.
An intermediate portion disposed between the rotating portion and the fixed portion, and a first joint portion that connects the intermediate portion and the rotating portion and allows relative rotational displacement of the both in a fixed floating region,
It is characterized by comprising a second joint portion which connects the intermediate portion and the fixed portion and allows relative rotational displacement of the both in a fixed floating region.
【0010】具体的な実施の態様としては、第1の継手
が、回転部又は中間部のうち一方に設けた凸部を他方に
設けた凹溝に係合させる構造のものであり、第2の継手
が、中間部又は固定部のうち一方に設けた凸部を他方に
設けた凹溝に係合させる構造のものであるものが挙げら
れる。As a concrete embodiment, the first joint has a structure in which the convex portion provided on one of the rotating portion and the intermediate portion is engaged with the concave groove provided on the other portion, and the second joint is formed. The joint may have a structure in which a convex portion provided on one of the intermediate portion and the fixed portion is engaged with a concave groove provided on the other.
【0011】[0011]
【作用】今、回転部が第1の継手部の遊動領域の始端側
で中間部に連結し、該中間部が第2の継手部の遊動領域
の始端側で固定部に連結しているものと仮定する。この
状態から、回転部が回転し始めると、先ず第1の継手部
の遊動領域内で回転部は中間部に対して相対回転可能で
あるため、中間部を引きずることなく回転する。そし
て、遊動領域の終端の連結位置に到達する。一方、中間
部は第2の継手部の遊動領域内で固定部に対して相対回
転可能であるため、回転部が前記遊動領域の終端に当接
すると、回転部は今度は中間部を引きずりながら更に回
転することができる。そして、中間部が第2の継手部の
遊動領域の終端に達すると、固定部が中間部の回転を拘
束し、中間部が回転部の回転を拘束して、回転部はその
位置に強制的に停止させられる。Now, the rotating portion is connected to the intermediate portion at the starting end side of the floating area of the first joint portion, and the intermediate portion is connected to the fixed portion at the starting end side of the floating area of the second joint portion. Suppose When the rotating portion starts to rotate from this state, first, the rotating portion is rotatable relative to the intermediate portion within the floating region of the first joint portion, and therefore rotates without dragging the intermediate portion. Then, the connecting position at the end of the floating region is reached. On the other hand, since the intermediate portion can rotate relative to the fixed portion within the floating area of the second joint portion, when the rotating portion comes into contact with the end of the floating area, the rotating portion now drags the intermediate portion. Further rotation is possible. When the intermediate portion reaches the end of the floating region of the second joint portion, the fixed portion restrains the rotation of the intermediate portion, the intermediate portion restrains the rotation of the rotating portion, and the rotating portion is forced to that position. To be stopped.
【0012】したがって、回転部が回転し得るのは、第
1の継手部の遊動領域に対応した回転角度と、第2の継
手部の遊動領域に対応した回転角度との総和に等しい角
度となる。各々の継手部の遊動領域は、互いに独立して
設定可能であり、始端と終端が連続しない限り360°
近くまで設定することができるので、両遊動領域を加え
た回転角度は、最大720°近くにまで拡張することが
可能になる。Therefore, the rotating portion can rotate at an angle equal to the sum of the rotating angle corresponding to the floating area of the first joint portion and the rotating angle corresponding to the floating area of the second joint portion. . The floating area of each joint can be set independently of each other and is 360 ° unless the start end and the end are continuous.
Since they can be set close to each other, the rotation angle including both floating regions can be expanded to near 720 ° at the maximum.
【0013】一方、前記強制停止位置から回転部が逆方
向に回転すると、遊動領域の終端から始端に向かって上
述した動作が逆に起こり、該始端において回転部が強制
停止させられる。そして、そのときの回転部の回転角度
は、先に述べた回転角度に等しいものとなる。On the other hand, when the rotating portion rotates in the opposite direction from the forced stop position, the above-described operation occurs in reverse from the end of the floating region toward the starting end, and the rotating portion is forcibly stopped at the starting end. Then, the rotation angle of the rotating portion at that time is equal to the rotation angle described above.
【0014】[0014]
【実施例】以下、本発明の実施例を、図1〜図5を参照
して説明する。Embodiments of the present invention will be described below with reference to FIGS.
【0015】<第1実施例>図1及び図2に示すメカニ
カルストッパは、モータMの回転を一定の領域に制限す
るためのもので、回転部1と、固定部2と、中間部3
と、第1の継手部4と、第2の継手部5とを具備してな
る。<First Embodiment> The mechanical stopper shown in FIGS. 1 and 2 is for limiting the rotation of the motor M to a fixed region, and includes a rotating portion 1, a fixed portion 2, and an intermediate portion 3.
And a first joint portion 4 and a second joint portion 5.
【0016】回転部1は、モータMの回転軸心mに中心
部を軸着された円板状のもので、モータMと共に一体回
転し得る。The rotating portion 1 is a disc-shaped member having a central portion axially attached to a rotation axis m of the motor M, and can rotate integrally with the motor M.
【0017】固定部2は、前記回転部1の回転軸心mに
中心を合致させて平行に配置された円板状のもので、適
宜の場所に回転し得ないように取り付けられている。The fixed portion 2 is a disk-shaped member which is arranged in parallel with its center aligned with the rotation axis m of the rotating portion 1 and is attached to an appropriate place so as not to rotate.
【0018】中間部3は、前記固定部2の下面21の中
心部に回転可能に軸着されて該固定部2と前記回転部1
との間に平行に配設された円板状のもので、下面31を
前記回転部1の上面11に近接して対向させ、上面32
を前記固定板2の下面21に近接して対向させている。The intermediate portion 3 is rotatably attached to the center of the lower surface 21 of the fixed portion 2 so that the fixed portion 2 and the rotary portion 1 can be rotated.
And a disk-shaped member arranged in parallel between the upper surface 32 and the upper surface 32 of the rotating portion 1 so that the lower surface 31 faces the upper surface 11 closely.
Are closely opposed to the lower surface 21 of the fixed plate 2.
【0019】第1の継手部4は、回転部1の上面11に
おける軸心mから径方向へ偏倚した位置に突設した凸部
たるピン41と、中間部3の下面31における軸心mか
ら径方向へ偏倚した位置に刻設した部分円弧状をなす凹
溝42とを具備してなる。凹溝42の軸心mからの偏倚
量はピン41のそれに等しく、凹溝42の溝幅はピン4
1の直径よりも若干大きくなるようにそれぞれ設定され
ている。また、ピン41の長さは、取付位置で先端が凹
溝42内に部分的に進入し得るように設定されている。
そして、ピン41及び凹溝42を介して回転部1及び中
間部3を連結するとともに、ピン41が凹溝42の一端
に係合する位置から他端に係合する位置の間の遊動領域
A内で回転部1と中間部3の相対的な回転変位を許容し
ている。The first joint portion 4 is provided with a pin 41 which is a convex portion projecting from the axial center m on the upper surface 11 of the rotary portion 1 at a position radially offset from the axial center m on the lower surface 31 of the intermediate portion 3. It is provided with a concave groove 42 having a partial arc shape engraved at a position deviated in the radial direction. The deviation amount of the concave groove 42 from the axis m is equal to that of the pin 41, and the groove width of the concave groove 42 is equal to that of the pin 4.
The diameter is set to be slightly larger than the diameter of 1. Further, the length of the pin 41 is set so that the tip end thereof can partially enter the groove 42 at the mounting position.
Then, the rotating portion 1 and the intermediate portion 3 are connected via the pin 41 and the concave groove 42, and the floating region A between the position where the pin 41 is engaged with one end of the concave groove 42 and the position where the pin 41 is engaged with the other end thereof. The relative rotational displacement of the rotating portion 1 and the intermediate portion 3 is allowed inside.
【0020】第2の継手部5は、中間部3の上面32に
おける軸心mから径方向へ偏倚した位置に刻設した部分
円弧状をなす凹溝52と、固定部2の下面21における
中心mから径方向へ偏倚した位置に突設した凸部たるピ
ン51とを具備してなる。凹溝52の軸心mからの偏倚
量はピン51のそれに等しく、凹溝52の溝幅はピン5
1の直径よりも若干大きくなるようにそれぞれ設定され
ている。また、ピン51の長さは、取付位置で先端が凹
溝51内に部分的に進入し得るように設定されている。
そして、ピン51及び凹溝52を介して中間部3及び固
定部2を連結するとともに、ピン51が凹溝52の一端
に係合する位置から他端に係合する位置の間の遊動領域
B内で中間部3と固定部2の相対的な回転変位を許容し
ている。The second joint portion 5 has a groove 52 formed in a partial arc shape on the upper surface 32 of the intermediate portion 3 at a position radially offset from the axis m, and a center of the lower surface 21 of the fixed portion 2. It is provided with a pin 51 which is a convex portion projecting at a position deviated from m in the radial direction. The amount of deviation of the groove 52 from the axis m is equal to that of the pin 51, and the groove width of the groove 52 is the width of the pin 5.
The diameter is set to be slightly larger than the diameter of 1. Further, the length of the pin 51 is set so that the tip end thereof can partially enter the groove 51 at the mounting position.
Then, the intermediate portion 3 and the fixed portion 2 are connected via the pin 51 and the concave groove 52, and the floating region B between the position where the pin 51 is engaged with one end of the concave groove 52 and the position where it is engaged with the other end. The relative rotational displacement of the intermediate portion 3 and the fixed portion 2 is allowed therein.
【0021】なお、本実施例において、第1の継手部4
における遊動領域Aは、凹溝42の長さとピン41の径
によって定まり、第2の継手部5における遊動領域B
は、凹溝52の長さとピン51の径によって定まるが、
これらを適宜に規定することによって、これらの遊動領
域A、Bに対応した遊動角度を各々略270°となるよ
うに設定している。また、本実施例は、第1の継手部4
を第2の継手部5よりも軸心mに近い位置に形成して、
中間部3に凹溝42、52による肉厚欠損部分が集中し
ないように配慮している。In the present embodiment, the first joint portion 4
The floating area A of the second joint portion 5 is determined by the length of the groove 42 and the diameter of the pin 41.
Is determined by the length of the groove 52 and the diameter of the pin 51,
By appropriately defining these, the floating angles corresponding to these floating regions A and B are set to be approximately 270 °, respectively. In addition, in this embodiment, the first joint portion 4
Is formed at a position closer to the axis m than the second joint portion 5,
Care is taken not to concentrate the thickness loss portion due to the concave grooves 42 and 52 on the intermediate portion 3.
【0022】次に、回転部1が平面視左回りに回転して
強制停止させられる際の作動を説明する。初期状態にお
いて、回転部1が図3に示すように第1の継手部4の遊
動領域Aの始端A1 側で中間部3に連結し、該中間部3
が第2の継手部5の遊動領域Bの始端B1 側で固定部2
に連結しているものとする。この状態から、回転部1が
回転し始めると、先ず第1の継手部4の遊動領域A内で
ピン41が凹溝42に沿って遊動し、回転部1は中間部
3を引きずることなく回転することができる。そして、
略270°回転した後にピン41が凹溝42に対して図
4に示すように遊動領域Aの終端A2 に到達する。一
方、中間部3は第2の継手部5の遊動領域B内で固定部
2に対して相対回転可能であるため、回転部1が前記遊
動領域Aの終端A2 に当接すると、回転部1は今度は中
間部3を引きずりながら更に回転することができる。そ
して、中間部3が略270°回転して凹溝52がピン5
1に対して図5に示すように第2の継手部5の遊動領域
Bの終端B2 に到達する。これにより、固定部2が中間
部3の回転を拘束し、中間部3が回転部1の回転を拘束
して、回転部1はその位置に強制的に停止させられる。Next, the operation when the rotating portion 1 rotates counterclockwise in plan view and is forced to stop will be described. In the initial state, the rotating portion 1 is connected to the intermediate portion 3 on the side of the starting end A1 of the floating area A of the first joint portion 4 as shown in FIG.
Is the fixed portion 2 on the side of the starting end B1 of the floating region B of the second joint portion 5.
Shall be connected to. When the rotating portion 1 starts to rotate from this state, first, the pin 41 floats along the concave groove 42 in the floating area A of the first joint portion 4, and the rotating portion 1 rotates without dragging the intermediate portion 3. can do. And
After rotating about 270 °, the pin 41 reaches the end A2 of the floating area A with respect to the groove 42 as shown in FIG. On the other hand, since the intermediate portion 3 is rotatable relative to the fixed portion 2 in the floating area B of the second joint portion 5, when the rotating portion 1 comes into contact with the end A2 of the floating area A, the rotating portion 1 Can now rotate further while dragging the intermediate part 3. Then, the intermediate portion 3 rotates by approximately 270 ° and the concave groove 52 becomes the pin 5
1 reaches the end B2 of the floating region B of the second joint portion 5 as shown in FIG. As a result, the fixed portion 2 restrains the rotation of the intermediate portion 3, the intermediate portion 3 restrains the rotation of the rotating portion 1, and the rotating portion 1 is forcibly stopped at that position.
【0023】したがって、回転部1が回転し得るのは、
単独で回転するときの第1の継手部4の遊動領域Aに対
応した回転角度略270°と、中間部3を引きずりなが
ら回転するときの第2の継手部5の遊動領域Bに対応し
た回転角度略270°とを加え合わせた角度;360°
+α(αは略180°)となる。Therefore, the rotating part 1 can rotate
A rotation angle corresponding to the floating area A of the first joint portion 4 when rotating independently, and a rotation corresponding to the floating area B of the second joint portion 5 when rotating while dragging the intermediate portion 3. Angle of about 270 ° and 360 °
+ Α (α is approximately 180 °).
【0024】一方、前記強制停止位置から回転部1が逆
方向に回転すると、第1の継手部4の遊動領域Aの終端
A2 から始端A1 に向かって回転部1の中間部3に対す
る相対回転が起こった後、第2の継手部5の遊動領域B
の終端B2 から始端B1 に向かって中間部3の固定部2
に対する相対回転が起こり、結果的に回転部1は角度;
−360°−αだけ逆回転して冒頭で述べた位置に正確
に強制停止させられる。On the other hand, when the rotating portion 1 rotates in the opposite direction from the forced stop position, the relative rotation of the rotating portion 1 with respect to the intermediate portion 3 from the terminal end A2 of the floating region A of the first joint portion 4 to the starting end A1. After the occurrence, the floating area B of the second joint portion 5
From the end B2 to the start B1 of the fixed portion 2 of the intermediate portion 3
Relative rotation with respect to, resulting in an angle of the rotating part 1;
It is reversely rotated by -360 ° -α and is forcibly stopped exactly at the position described at the beginning.
【0025】以上のように、本実施例のメカニカルスト
ッパは、ピン41、51の径及び凹溝42、52の長さ
さえ正確に規定しておけば、回転部1を正逆方向に略1
回転半した位置に正確且つ確実に強制停止させる機能を
営むことができる。しかも、このものは機械的な要素部
品のみで構成され、電気的・光学的な要素部品を構成要
件として用いる必要がないため、誤動作の恐れがなく、
高い信頼性を発揮できるものとなる。As described above, in the mechanical stopper of the present embodiment, if the diameters of the pins 41 and 51 and the lengths of the concave grooves 42 and 52 are accurately defined, the rotary portion 1 is moved in the forward and reverse directions by approximately 1 mm.
A function of forcibly and surely forcibly stopping at a half-turned position can be performed. Moreover, since this is composed of only mechanical element parts and there is no need to use electrical / optical element parts as constituent elements, there is no fear of malfunction,
High reliability can be demonstrated.
【0026】なお、以上の動作説明では、便宜上、第
1、第2の継手部4、5における遊動動作が順次独立し
て起こるものとして説明したが、実際には遊動時の摺動
抵抗によって継手部4における遊動動作と継手部5にお
ける遊動動作とが同時進行する場合があり得る。しか
し、遊動領域A、Bの到達点は不変であるため、回転部
1の強制停止位置が遊動動作の経過によって左右される
ことはない。同様に、第1の継手部4の摺動抵抗よりも
第2の継手部5の摺動抵抗の方が遥かに小さい場合に
は、第2の継手部5における遊動動作が第1の継手部4
における遊動動作に先行して発生し完了する場合も当然
に考えられるが、この場合にも事情は全く同様である。
また、角度設定も上記のものに限定されるものではな
い。In the above description of the operation, for the sake of convenience, it was explained that the floating motions of the first and second joint portions 4 and 5 occur independently and in sequence, but in reality, the joints are caused by the sliding resistance during the floating motion. There is a possibility that the floating motion of the portion 4 and the floating motion of the joint portion 5 simultaneously proceed. However, since the arrival points of the floating regions A and B are unchanged, the forced stop position of the rotating unit 1 is not influenced by the progress of the floating motion. Similarly, when the sliding resistance of the second joint portion 5 is much smaller than the sliding resistance of the first joint portion 4, the floating motion of the second joint portion 5 is the first joint portion. Four
It is of course conceivable that the floating motion occurs and completes before the floating motion, but the situation is exactly the same in this case as well.
Also, the angle setting is not limited to the above.
【0027】<第2実施例>次に、本発明の他の実施例
を、図6〜図9を参照して説明する。<Second Embodiment> Next, another embodiment of the present invention will be described with reference to FIGS.
【0028】図6及び図7に示すメカニカルストッパ
も、モータMの回転を正逆回転方向に角度;360°+
αの範囲に規制するためのもので、回転部101及び固
定部102の基本的な構成については同様である。The mechanical stoppers shown in FIGS. 6 and 7 also rotate the motor M in the forward and reverse rotation angles; 360 ° +
It is for restricting to the range of α, and the basic configurations of the rotating portion 101 and the fixed portion 102 are the same.
【0029】そして、回転部101と固定部102の間
であって軸心mから径方向へ偏倚した位置に、中間部た
るピン103を起立状態で配置し、このピン103と回
転部101の間に第1の継手部104を、また該ピン1
03と固定部102の間に第2の継手部105をそれぞ
れ構成している。Then, a pin 103, which is an intermediate portion, is arranged in an upright state between the rotating portion 101 and the fixed portion 102 and at a position deviated from the axis m in the radial direction, and between the pin 103 and the rotating portion 101. The first joint portion 104, and the pin 1
The second joint portion 105 is configured between the fixed portion 103 and the fixing portion 102.
【0030】第1の継手部104は、前記ピン103の
下端141と、前記回転部101の上面111に形成し
た部分円弧状をなす凹溝142とを具備してなる。ピン
下端141は凹溝142内に係合して遊動可能であり、
その遊動領域C(図8参照)の始端C1 から終端C2 ま
での角度は、前記実施例と同様にピン下端141の径及
び凹溝142の長さを規定することによって略270°
に設定してある。The first joint portion 104 comprises a lower end 141 of the pin 103 and a concave groove 142 formed in the upper surface 111 of the rotating portion 101 and having a partial arc shape. The lower end 141 of the pin is engaged with the groove 142 and is movable.
The angle from the starting end C1 to the terminating end C2 of the floating area C (see FIG. 8) is approximately 270 ° by defining the diameter of the pin lower end 141 and the length of the concave groove 142 as in the above embodiment.
Is set to.
【0031】第2の継手部105は、前記ピン103の
上端151と、前記固定部102の下面121に形成し
た部分円弧状をなす凹溝152とを具備してなる。ピン
上端151は凹溝152内に係合して遊動可能であり、
その遊動領域D(図9参照)の始端D1 から終端D2 ま
での角度は、同じくピン151の径及び凹溝152の長
さを規定することによって略270°に設定してある。The second joint portion 105 is provided with an upper end 151 of the pin 103 and a concave groove 152 formed in the lower surface 121 of the fixing portion 102 and having a partial arc shape. The upper end 151 of the pin is engaged with the groove 152 and can move freely.
The angle from the starting end D1 to the terminating end D2 of the floating region D (see FIG. 9) is set to approximately 270 ° by similarly defining the diameter of the pin 151 and the length of the concave groove 152.
【0032】この実施例のものも、回転部101はピン
103に対して平面視左回りに略270°回転でき、ピ
ン103は固定部102に対して同方向に略270°回
転できるので、結果的に回転部101は固定部102に
対して角度;360°+α(αは略180°)回転でき
ることになる。そして、その位置でピン103が第1の
遊動領域Cの終端C2 及び第2の遊動領域Dの終端D2
でそれぞれ凹溝142、152に係合して、回転部10
1がピン103を介して固定部102に拘束され、回転
部101はその位置に強制停止させられるものとなる。
勿論、逆回転した場合にも同様の作動が営まれるほか、
両遊動領域C、Dのうちいずれかの遊動動作が先行した
場合や、両遊動領域C、Dの遊動動作が同時進行した場
合にも、結果は同一となる。Also in this embodiment, the rotating portion 101 can rotate counterclockwise about 270 ° with respect to the pin 103, and the pin 103 can rotate about 270 ° in the same direction with respect to the fixed portion 102. Therefore, the rotating part 101 can rotate 360 ° + α (α is approximately 180 °) with respect to the fixed part 102. Then, at that position, the pin 103 has the end C2 of the first floating area C and the end D2 of the second floating area D.
To engage the concave grooves 142 and 152, respectively,
1 is restrained by the fixed portion 102 via the pin 103, and the rotating portion 101 is forcibly stopped at that position.
Of course, in the case of reverse rotation, the same operation is performed,
The result is the same when the floating motion of either floating region C or D precedes or when the floating motions of both floating regions C and D proceed simultaneously.
【0033】そして、このような構成によっても、やは
り機械的な要素部品のみでストッパを構成できるため、
精度のみならず信頼性も確実に向上させることが可能に
なる。その上、この実施例によると、前記実施例よりも
部品点数が少なくて済むため、加工・組立工数の削減
や、コストダウンを図る上でも有用なものとなる。Even with such a structure, the stopper can be composed of only mechanical element parts.
Not only the accuracy but also the reliability can be surely improved. Moreover, according to this embodiment, the number of parts is smaller than that of the above-mentioned embodiment, which is also useful in reducing the number of working / assembling steps and cost.
【0034】なお、この実施例ではピン103の傾倒を
惹起する恐れがあるため、該ピン103の上端近傍及び
下端近傍に、回転部101の上面111又は固定部10
2の下面121に摺接して凹溝142、152に落ち込
まない程度の径のフランジを設けておくことも有効とな
る。In this embodiment, since the pin 103 may be tilted, the upper surface 111 of the rotating portion 101 or the fixed portion 10 is located near the upper end and the lower end of the pin 103.
It is also effective to provide a flange having a diameter such that it slidably contacts the lower surface 121 of No. 2 and does not fall into the concave grooves 142 and 152.
【0035】以上、本発明の2つの実施例について説明
したが、各部の具体的な構成は図示実施例のものに限定
されるものではなく、本発明の趣旨を逸脱しない範囲で
種々変形が可能である。例えば、前記実施例では継手部
がピンと凹溝の係合構造から構成されているが、ピンに
代えて円弧形状をなす突条を凹溝に係合させるようにし
てもよい。Although the two embodiments of the present invention have been described above, the specific structure of each part is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention. Is. For example, in the above-mentioned embodiment, the joint portion is composed of the engaging structure of the pin and the concave groove, but instead of the pin, a projection having an arc shape may be engaged with the concave groove.
【0036】[0036]
【発明の効果】本発明のメカニカルストッパは、以上詳
述したように、回転部に、中間部、第1の継手部、第2
の継手部及び固定部の各機械要素を組み付け、継手部に
おける遊動領域を適宜に設定することで、回転部を所望
の回転位置に確実に強制停止させ得るようにしたもので
ある。このため、ストッパとしての信頼性と精度を高い
次元で両立させることができるという優れた効果を奏す
る。As described above in detail, the mechanical stopper of the present invention has a rotating portion, an intermediate portion, a first joint portion, and a second joint portion.
By assembling each mechanical element of the joint portion and the fixed portion and appropriately setting the floating area in the joint portion, the rotating portion can be surely forcibly stopped at a desired rotation position. Therefore, there is an excellent effect that both reliability and accuracy as a stopper can be achieved at a high level.
【図1】本発明の一実施例を示す斜視図。FIG. 1 is a perspective view showing an embodiment of the present invention.
【図2】同正面図。FIG. 2 is a front view of the same.
【図3】図2におけるIII-III 線断面図。FIG. 3 is a sectional view taken along line III-III in FIG. 2;
【図4】図3に対応した作用説明図。FIG. 4 is an operation explanatory view corresponding to FIG.
【図5】図3に対応した作用説明図。FIG. 5 is an operation explanatory view corresponding to FIG.
【図6】本発明の他の実施例を示す斜視図。FIG. 6 is a perspective view showing another embodiment of the present invention.
【図7】同正面図。FIG. 7 is a front view of the same.
【図8】図7におけるVIII-VIII 線断面図。FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7;
【図9】同実施例の平面図。FIG. 9 is a plan view of the embodiment.
【図10】従来例を示す正面図。FIG. 10 is a front view showing a conventional example.
【図11】同底面図。FIG. 11 is a bottom view of the same.
【図12】同作用説明図。FIG. 12 is an explanatory view of the same operation.
1、101…回転部 2、102…固定部 3、103…中間部 4、104…第1の継手部 5、105…第2の継手部 A、B、C、D…遊動領域 1, 101 ... Rotating part 2, 102 ... Fixed part 3, 103 ... Intermediate part 4, 104 ... First joint part 5, 105 ... Second joint part A, B, C, D ... Floating region
Claims (1)
ニカルストッパであって、回転部に近接して対向配置さ
れる固定部と、回転部及び固定部の間に配設される中間
部と、中間部と回転部の間を連結するとともに一定の遊
動領域内において両者の相対的な回転変位を許容する第
1の継手部と、中間部と固定部の間を連結するとともに
一定の遊動領域内において両者の相対的な回転変位を許
容する第2の継手部とを具備してなることを特徴とする
メカニカルストッパ。1. A mechanical stopper for limiting the rotation of a rotating portion to a fixed region, wherein a fixed portion is disposed adjacent to and facing the rotating portion and an intermediate portion disposed between the rotating portion and the fixed portion. And a first joint portion that connects the intermediate portion and the rotating portion and allows relative rotational displacement of the both in a constant floating region, and connects the intermediate portion and the fixed portion and provides a constant floating movement. A mechanical stopper comprising: a second joint portion that allows relative rotational displacement of the both in a region.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5921795A JPH08252734A (en) | 1995-03-17 | 1995-03-17 | Mechanical stopper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5921795A JPH08252734A (en) | 1995-03-17 | 1995-03-17 | Mechanical stopper |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08252734A true JPH08252734A (en) | 1996-10-01 |
Family
ID=13107004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5921795A Pending JPH08252734A (en) | 1995-03-17 | 1995-03-17 | Mechanical stopper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08252734A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010002956A (en) * | 2008-06-18 | 2010-01-07 | Nec Corp | Stopper mechanism |
JP2010192402A (en) * | 2009-02-20 | 2010-09-02 | Japan Radio Co Ltd | Rotating body device |
JP2011062795A (en) * | 2009-09-18 | 2011-03-31 | Denso Wave Inc | Stopper device for robot |
-
1995
- 1995-03-17 JP JP5921795A patent/JPH08252734A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010002956A (en) * | 2008-06-18 | 2010-01-07 | Nec Corp | Stopper mechanism |
JP2010192402A (en) * | 2009-02-20 | 2010-09-02 | Japan Radio Co Ltd | Rotating body device |
JP2011062795A (en) * | 2009-09-18 | 2011-03-31 | Denso Wave Inc | Stopper device for robot |
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