JPS5826438Y2 - centrifugal force switch - Google Patents
centrifugal force switchInfo
- Publication number
- JPS5826438Y2 JPS5826438Y2 JP1979126543U JP12654379U JPS5826438Y2 JP S5826438 Y2 JPS5826438 Y2 JP S5826438Y2 JP 1979126543 U JP1979126543 U JP 1979126543U JP 12654379 U JP12654379 U JP 12654379U JP S5826438 Y2 JPS5826438 Y2 JP S5826438Y2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- lever
- base
- movable contact
- plate
- 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
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Description
【考案の詳細な説明】
最近は比較的高容量の分相起動形単相電動機が広く使用
されるに至り、該電動機の起動完了時にその起動巻線を
開放するべき遠心力開閉器の接点容量の向上が強く要望
されている。[Detailed description of the invention] Recently, relatively high-capacity split-phase starting single-phase motors have come into widespread use, and the contact capacity of the centrifugal force switch that opens the starting winding when the starting of the motor is completed. There is a strong demand for improvement.
しかも電動機自体或いはその負荷機器の小型化のため、
遠心力開閉器は接点容量の増大にも拘らず寸法を大きく
することができない実状である。Moreover, due to the miniaturization of the motor itself or its load equipment,
The actual situation is that the dimensions of centrifugal force switches cannot be increased despite the increase in contact capacity.
本考案はこのような要請に応じて、大容量で且つ小型な
遠心力開閉器を提供することを目的とする。In response to such demands, the present invention aims to provide a large-capacity, small-sized centrifugal force switch.
本考案遠心力開閉器は、電動機器体に設けられる開閉接
触部Cと電動機回転軸Sに装着たれる同転部Rとから成
る。The centrifugal force switch of the present invention consists of an opening/closing contact part C provided on the electric equipment body and a co-rotating part R attached to the motor rotating shaft S.
開閉接触部t、F二於て、11〜′物製の基台、2,3
は基台1からブ:出したつj−・、−夫々固定接点3,
3を備え、基端を基台1に・1定され、端子ねし穴2A
、2Aを有する端子板である。At opening/closing contact part t, F2, 11-' base made of material, 2, 3
are the fixed contacts 3,
3, the base end is fixed to the base 1, and the terminal hole 2A
, 2A.
4は電動機回転軸Sを囲繞する半円弧状の操作部4Aと
基部4Bとから成るレバー、5は支持板、6は先端に夫
々可動接点7,7を備えレバー4の操作部4Aに沿って
延伸する半円弧状部6Aと屈曲基部6Bとから戒る弾性
金属板製の可動接点板である。Reference numeral 4 denotes a lever consisting of a semi-circular arc-shaped operating part 4A surrounding the electric motor rotation axis S and a base 4B, 5 a support plate, and 6 equipped with movable contacts 7, 7 at the tip, respectively, along the operating part 4A of the lever 4. It is a movable contact plate made of an elastic metal plate that is separated from an extending semicircular arc portion 6A and a bent base portion 6B.
レバー4の基部4Bは、その先端の溝4Cを支持板5の
先端の溝5Aに係合させて枢支されると共に、可動接点
板6の屈曲基部6Bにより支持板5の門型立上り部5B
に常時は押付けられている。The base 4B of the lever 4 is pivotally supported by engaging the groove 4C at its tip with the groove 5A at the tip of the support plate 5, and is supported by the bent base 6B of the movable contact plate 6 into the gate-shaped rising portion 5B of the support plate 5.
is constantly being pushed.
次、到転部Rに於て、8は電動機回転軸Sを自在に5動
する摺動子で、前期開閉接触部Cのレバー4の半円弧状
操作部4Aに対向接離する環状部8Aを有する。Next, in the reaching part R, 8 is a slider that freely moves the motor rotation shaft S, and an annular part 8A that opposes and separates from the semicircular arc-shaped operating part 4A of the lever 4 of the first opening/closing contact part C. has.
9は中央に電動機回転軸Sに圧入される穴9Aを有する
支持台、10は一端を支持台9に枢支された作動片11
と共に電動機軸Sの回転速度の上昇に応じて引張りばね
12に抗して飛開し、摺動子8を第1図右向きに駆動す
る遠心力作動子である。Reference numeral 9 denotes a support base having a hole 9A in the center into which the electric motor rotating shaft S is press-fitted, and reference numeral 10 represents an actuating piece 11 whose one end is pivotally supported on the support base 9.
It is also a centrifugal force actuator that flies open against the tension spring 12 in response to an increase in the rotational speed of the motor shaft S, and drives the slider 8 rightward in FIG.
次に動作について述べる。Next, we will discuss the operation.
電動機停止中は、引張りばね12の作用で、摺動子8が
第1図左向きに移動し、その環状部8Aによりレバー4
及び可動接点板6が押圧されて、可動接点7が固定接点
3と閉成している(第4図口)。When the electric motor is stopped, the slider 8 moves to the left in FIG. 1 under the action of the tension spring 12, and its annular portion 8A moves the lever
Then, the movable contact plate 6 is pressed, and the movable contact 7 is closed with the fixed contact 3 (see Figure 4).
遠心力作動子10が引張りばね12に抗して徐々に飛開
し、所定の回転速度に達して引張りばね12の死点を超
えるや否や、摺動子8を第1図右向きに急速に引き寄せ
る。The centrifugal force actuator 10 gradually flies open against the tension spring 12, and as soon as it reaches a predetermined rotational speed and passes the dead center of the tension spring 12, it rapidly pulls the slider 8 toward the right in FIG. .
摺動子8が微小距離を移動して加速度を生じて後、レバ
ー4及び可動接点板6への押圧を解除し、レバー4及び
可動接点板6は後者の蔵する弾力により、第1図で反時
計方向に回動して、接点3,7を急速に開放し、電動機
の起動巻線への通電を断つ。After the slider 8 moves a minute distance and generates acceleration, the pressure on the lever 4 and the movable contact plate 6 is released, and the lever 4 and the movable contact plate 6 move as shown in FIG. 1 due to the elasticity of the latter. It rotates counterclockwise to rapidly open contacts 3 and 7, cutting off the power to the starting winding of the motor.
即ち回転部Rと開閉接触部Cの相対的位置を適正に定め
れば、摺動子8が速動し始めた後に、両接点3.7を急
速に開放せしめて第4図イに示す状態とすることができ
、接点の遮断能力を向上できる。That is, if the relative positions of the rotating part R and the opening/closing contact part C are properly determined, after the slider 8 starts to move rapidly, both contacts 3.7 are rapidly opened, resulting in the state shown in FIG. 4A. The breaking ability of the contact can be improved.
而して、従来のこの種開閉器は、第3図に示すように、
基台1上に、固定接点3′を備え端子ねし穴を有する端
子板2′、並びに、自由端に可動接点7′を備え端子ね
し穴を有する弾性金属板製の可動接点板6′を設け、レ
バー4′の半円弧状部基端4’Dを可動接点7′の背面
に対向させていた。Therefore, as shown in Fig. 3, the conventional switch of this type has the following characteristics.
On the base 1, there is a terminal plate 2' having a fixed contact 3' and a terminal screw hole, and a movable contact plate 6' made of an elastic metal plate having a movable contact 7' at the free end and having a terminal screw hole. was provided, and the base end 4'D of the semicircular arc portion of the lever 4' was opposed to the back surface of the movable contact 7'.
このため、第5図に示すように、レバー4′の枢支点か
ら摺動子8による駆動点までの距離L2’に対するレバ
ー4′の枢支部から接点3’、7’までの距離Ll’の
比が大であり、摺動子8のストロークlに対して接点間
隙G′を大きくとることができなかった。Therefore, as shown in FIG. 5, the distance Ll' from the pivot point of the lever 4' to the contacts 3' and 7' is The ratio was large, and it was not possible to make the contact gap G' large relative to the stroke l of the slider 8.
これに対して、本考案は、第4図に示すようにレバー4
の枢支点から接点3,7までの距離L1がレバー4の枢
支点から摺動子8による駆動点までの距離L2に略ぼ等
しく、よって摺動子8のストロークlを第5図の従来の
ものと同一としても、接点間隙Gをきわめて大きくする
ことができる。In contrast, the present invention has a lever 4 as shown in FIG.
The distance L1 from the pivot point of the lever 4 to the contact points 3 and 7 is approximately equal to the distance L2 from the pivot point of the lever 4 to the driving point of the slider 8, and therefore the stroke l of the slider 8 is Even if they are the same, the contact gap G can be made extremely large.
又開閉時に、可動接点7は可動接点板6の屈曲基部6B
を中心として、一方固定接点3は端子板2の基台1への
固定部分を中心として、夫々円運動するため、両接点7
,3間にワイピング作用が行なわれる。In addition, when opening and closing, the movable contact 7 is connected to the bent base 6B of the movable contact plate 6.
Since the fixed contacts 3 each move circularly around the fixed part of the terminal plate 2 to the base 1, both contacts 7
, 3, the wiping action is performed.
従来のものに比して、レバーや可動接点板の自由端を半
円弧状として電動機回転軸を囲繞するよう巧妙に配置し
たことにより所要スペースは同一であり、摺動子の移動
及びストロークが等しくとも、接点が2点接触であるこ
とも相まって、接点の遮断速度が向上し、その開放時の
間隙が大となり、両接点間のワイピング作用で耐溶着性
が向上し、しかも可動接点板や端子板が基台から大きく
延伸して両接点が流動空気中にあるので熱放散性に優れ
る等、接点の電流容量及び耐久性を格段と向上せしめ、
小型な高容量電動機用としての所期の目的を遠戚できる
ものである。Compared to conventional models, the free ends of the lever and movable contact plate are shaped into semicircular arcs and are cleverly arranged to surround the motor rotating shaft, so the space required is the same, and the movement and stroke of the slider are equal. In both cases, the contact has two points of contact, which improves the breaking speed of the contact, increases the gap when it opens, and improves welding resistance due to the wiping action between both contacts. Since the plate extends widely from the base and both contacts are in flowing air, the current capacity and durability of the contacts are greatly improved, such as excellent heat dissipation.
This is a distant relative of the intended purpose for small, high-capacity electric motors.
第1図は本考案の正面図、第2図は開閉接触部を示し、
イは中央縦断正面図、口は一部切断右側面図、ハは底面
図であり、第3図は従来のものの開閉接触部を示し、イ
は中央縦断正面図、口は一部切断右側面図、ハは底面図
であり、第4図及び第5図は、夫々本考案及び従来のも
のの動作説明図であり、イは接点開放(電動機運転)の
時、口は接点閉成(電動機停止)の時の状態を示す。
S;電動機回転軸、C;開閉接触部、R;回転部、1;
基台、2;端子板、3;固定接点、4;レバー、4A;
半円弧状の操作部、4B;基部、5;支持板、6;可動
接点板、6A;半円弧状部、6B;屈曲基部、7;可動
接点、8;摺動子、8A;環状部。Figure 1 is a front view of the present invention, Figure 2 shows the opening/closing contact part,
A is a front view of the central longitudinal section, the opening is a partially cutaway right side view, C is a bottom view, Figure 3 shows the opening/closing contact part of the conventional type, A is a front view of the central longitudinal section, and the opening is a partially cutaway right side view. Figures 4 and 5 are diagrams explaining the operation of the present invention and the conventional one, respectively. ). S: Motor rotating shaft, C: Opening/closing contact part, R: Rotating part, 1;
Base, 2; Terminal board, 3; Fixed contact, 4; Lever, 4A;
Semi-circular arc-shaped operating portion, 4B; base, 5; support plate, 6; movable contact plate, 6A; semi-circular arc-shaped portion, 6B; bent base, 7; movable contact, 8; slider, 8A; annular portion.
Claims (1)
動する摺動子により速動的に駆動され、電動機器体に設
けられて、前記回転軸を囲繞する半円弧状操作部を有す
るレバーの基端を枢支し、該レバーの操作部に沿って延
伸する弾性金属板製の可動接点板の半円弧状の両先端に
可動接点を備えて、基台より突出した2個の端子板の先
端に設けられた固定接点に夫々対向せしめ、可動接点板
の屈曲基部を中心として円運動する可動接点と、端子板
の固定部分を中心として円運動する固定接点とを、ワイ
ピング作用をもって接離せしめる開閉接触部を備えた遠
心力開閉器。A semicircular arc-shaped operation part that is rapidly driven by a slider that moves quickly at a predetermined rotational speed of a rotating part attached to the electric motor rotating shaft, is provided on the electric equipment body, and surrounds the rotating shaft. A movable contact plate made of an elastic metal plate that pivotally supports the base end of the lever and extends along the operating part of the lever has movable contacts at both ends of a semicircular arc, and two terminals protrude from the base. A movable contact that moves in a circle around the bent base of the movable contact plate and a fixed contact that moves in a circle around the fixed part of the terminal plate are brought into contact with each other by a wiping action. Centrifugal force switch with opening/closing contact parts that can be separated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1979126543U JPS5826438Y2 (en) | 1979-09-13 | 1979-09-13 | centrifugal force switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1979126543U JPS5826438Y2 (en) | 1979-09-13 | 1979-09-13 | centrifugal force switch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5643554U JPS5643554U (en) | 1981-04-20 |
JPS5826438Y2 true JPS5826438Y2 (en) | 1983-06-08 |
Family
ID=29358439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1979126543U Expired JPS5826438Y2 (en) | 1979-09-13 | 1979-09-13 | centrifugal force switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5826438Y2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS422589Y1 (en) * | 1964-12-16 | 1967-02-16 | ||
JPS4732468U (en) * | 1971-04-27 | 1972-12-12 |
-
1979
- 1979-09-13 JP JP1979126543U patent/JPS5826438Y2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS422589Y1 (en) * | 1964-12-16 | 1967-02-16 | ||
JPS4732468U (en) * | 1971-04-27 | 1972-12-12 |
Also Published As
Publication number | Publication date |
---|---|
JPS5643554U (en) | 1981-04-20 |
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