JPS6344592Y2 - - Google Patents
Info
- Publication number
- JPS6344592Y2 JPS6344592Y2 JP7796381U JP7796381U JPS6344592Y2 JP S6344592 Y2 JPS6344592 Y2 JP S6344592Y2 JP 7796381 U JP7796381 U JP 7796381U JP 7796381 U JP7796381 U JP 7796381U JP S6344592 Y2 JPS6344592 Y2 JP S6344592Y2
- Authority
- JP
- Japan
- Prior art keywords
- cam
- joint
- tension spring
- swinging
- swinging joint
- 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.)
- Expired
Links
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Description
【考案の詳細な説明】
本考案は大きいストロークが必要なカムを、高
速でしかもスムーズに回転させるためのカム機構
に関するものである。[Detailed Description of the Invention] The present invention relates to a cam mechanism for rotating a cam that requires a large stroke at high speed and smoothly.
従来回転運動を直線運動に変換するこの種の機
構は、第１図の説明図に示す如く支点５まわりに
往復角運動を行う揺動節６を設け、カム１に揺動
節６のカムフオロア３を強制接触させるために固
定端１０から引張りバネ２により揺動節６を引張
つていた。その為、カムリフトが大きい場合、す
なわち最大外径RAと最小外径RBの差が大きい場
合には、引張りバネ２の力が最大外径では最も強
く、その反対に最小外径では最も弱くなつてい
た。又引張りバネ力が大きくなると駆動トルクが
大きくなる欠点があり、又最大外径から最小外径
へ移る時、バネ力が開放されてカムフオロア３が
ジヤンピングする欠点があつた。更に、引張りバ
ネの疲労を考慮すれば、長い引張りバネを使用せ
ざるをえなくなり、広いスペースを必要としてい
た。 Conventionally, this type of mechanism for converting rotational motion into linear motion is provided with a swinging joint 6 that performs reciprocating angular motion around a fulcrum 5, as shown in the explanatory diagram of FIG. The swing joint 6 was pulled from the fixed end 10 by a tension spring 2 in order to forcibly bring them into contact with each other. Therefore, when the cam lift is large, that is, when the difference between the maximum outside diameter R A and the minimum outside diameter R B is large, the force of the tension spring 2 is strongest at the maximum outside diameter, and on the contrary, it is the weakest at the minimum outside diameter. I was getting used to it. Further, there is a drawback that as the tension spring force increases, the driving torque increases, and when moving from the maximum outer diameter to the minimum outer diameter, the spring force is released and the cam follower 3 jumps. Furthermore, considering the fatigue of the tension spring, it is necessary to use a long tension spring, which requires a large space.
本考案はカムに与える引張りバネ力のバラツキ
を少なくすることにより、リフトの大きいカムで
も円滑な高速回転ができるカム機構を提供するも
のである。 The present invention provides a cam mechanism that allows even a cam with a large lift to rotate smoothly at high speed by reducing variations in the tension spring force applied to the cam.
本考案の機構を第２図の説明図を用いて説明す
る。 The mechanism of the present invention will be explained using the explanatory diagram of FIG.
本考案のカム機構は、従来の揺動節６の他にカ
ム１をはさんでこの揺動節６の対向位置に、支点
７まわりに往復角運動を行う従動節８を設け、引
張りバネ２の従来の固定端１０に相当する位置を
従動節８上に移し、揺動節６と従動節８とを引張
りバネ２で結んでカム１を挾圧し、カムフオロア
３と９をカム１に強制接触させた構造を有する。
カムフオロア３と９の中心を結ぶ直線は駆動軸４
の中心を通るように設けられている。 In the cam mechanism of the present invention, in addition to the conventional rocking joint 6, a driven joint 8 that makes reciprocating angular movement around a fulcrum 7 is provided at a position opposite to the rocking joint 6 with the cam 1 in between, and a tension spring 2 is provided. The position corresponding to the conventional fixed end 10 of is moved onto the driven joint 8, the swinging joint 6 and the driven joint 8 are tied together with the tension spring 2, the cam 1 is clamped, and the cam followers 3 and 9 are forcibly brought into contact with the cam 1. It has a built-in structure.
The straight line connecting the centers of cam followers 3 and 9 is the drive shaft 4
It is placed so that it passes through the center of the
このような構造のカム機構によれば、揺動節と
従動節の揺動方向が同じ場合には、引張りバネの
たわみ量は取付け時のたわみ量を基準としてそれ
以上の変動は全く無いか有つてもわずかとなる。
しかしカムの形状によつては揺動節と従動節が反
対方向に揺動する場合があるが、この場合でもカ
ムリフトよりも引張りバネのたわみ量が少なけれ
ば前の場合と同じ効果が得られる。 According to a cam mechanism with such a structure, when the swinging direction of the swinging joint and the driven joint are the same, the amount of deflection of the tension spring has no or no further variation from the amount of deflection at the time of installation. Even if it does, it will be very small.
However, depending on the shape of the cam, the swing joint and the driven joint may swing in opposite directions, but even in this case, the same effect as in the previous case can be obtained as long as the amount of deflection of the tension spring is smaller than the cam lift.
このような本考案によれば、引張りバネのたわ
み変動量が小さくなるので駆動トルク変動及びジ
ヤンピングはなくなり、広いスペースも必要とし
なくなつて小形でしかも高速回転が可能なカム機
構を提供することができる。なおカム駆動軸中心
を通り、カムの両端に至る直線距離がRA＋RBに
等しくなるようなカムは、引つ張りバネのたわみ
が一定となるので、駆動トルク変動が少なくな
り、回転の安定が一層増す。又本考案のカム機構
を用いて直線運動機構を得るには、揺動節６を延
長してその先端の揺動運動を直線運動に変換する
機構を設ければよく、ストロークの大きい直線往
復運動も容易に得られる。 According to the present invention, since the amount of variation in deflection of the tension spring is reduced, drive torque variation and jumping are eliminated, and a large space is not required, making it possible to provide a cam mechanism that is compact and capable of high-speed rotation. can. In addition, for a cam whose straight line distance from the center of the cam drive shaft to both ends of the cam is equal to R A + R B , the deflection of the tension spring is constant, so fluctuations in the drive torque are reduced, resulting in stable rotation. increases further. In addition, in order to obtain a linear motion mechanism using the cam mechanism of the present invention, it is sufficient to extend the swinging joint 6 and provide a mechanism that converts the swinging motion of its tip into linear motion. is also easily obtained.
第１図は従来のカム機構の説明図、第２図は本
考案の説明図である。
１……カム、２……引張りバネ、３……カムフ
オロア、４……駆動軸、５……支点、６……揺動
節、７……支点、８……従動節、９……カムフオ
ロア、１０……固定端。
FIG. 1 is an explanatory diagram of a conventional cam mechanism, and FIG. 2 is an explanatory diagram of the present invention. 1... Cam, 2... Tension spring, 3... Cam follower, 4... Drive shaft, 5... Fulcrum, 6... Swing joint, 7... Fulcrum, 8... Driven joint, 9... Cam follower, 10...Fixed end.
Claims (1)
させ、カムを回転させて揺動節に往復角運動を与
えるカム機構において、前記カムをはさんで前記
揺動節の対向位置に往復角運動を行う前記揺動節
と並列な従動節を設け、前記揺動節と前記従動節
のそれぞれの支点とカムの接点との中間部分を引
つ張りバネで結んで、前記カムを挾圧したことを
特徴とするカム機構。 In a cam mechanism in which a tension spring is used to forcibly bring a swinging joint into contact with a cam, the cam is rotated, and the swinging joint is given a reciprocating angular motion. A driven joint is provided in parallel with the swinging joint that performs angular motion, and the intermediate portions between the respective fulcrums of the swinging joint and the driven joint and the contact point of the cam are connected with a tension spring to clamp the cam. The cam mechanism is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7796381U JPS6344592Y2 (en) | 1981-05-28 | 1981-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7796381U JPS6344592Y2 (en) | 1981-05-28 | 1981-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57190162U JPS57190162U (en) | 1982-12-02 |
| JPS6344592Y2 true JPS6344592Y2 (en) | 1988-11-18 |
Family
ID=29873604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7796381U Expired JPS6344592Y2 (en) | 1981-05-28 | 1981-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6344592Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61147515A (en) * | 1984-12-21 | 1986-07-05 | Toshiba Corp | Energy accumulator of on-load tap exchanger |
| JP5048562B2 (en) * | 2008-03-26 | 2012-10-17 | 株式会社ケーヒン | Clamping device |
-
1981
- 1981-05-28 JP JP7796381U patent/JPS6344592Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57190162U (en) | 1982-12-02 |
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