JPH0159455B2 - - Google Patents
Info
- Publication number
- JPH0159455B2 JPH0159455B2 JP57120057A JP12005782A JPH0159455B2 JP H0159455 B2 JPH0159455 B2 JP H0159455B2 JP 57120057 A JP57120057 A JP 57120057A JP 12005782 A JP12005782 A JP 12005782A JP H0159455 B2 JPH0159455 B2 JP H0159455B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- cam
- cam gear
- magnet
- force
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/26—Automatic clutches actuated entirely mechanically acting at definite angular position or disengaging after consecutive definite number of rotations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electromagnets (AREA)
- Shutters For Cameras (AREA)
Description
【発明の詳細な説明】
本発明は、小型でかつ省電力のカム装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compact and power-saving cam device.
最近カメラ業界、テープレコーダ業界など製品
の小型化の進むなかで、電磁石やモータの回転力
を利用し、人間の力を使わず、各種動作をさせる
製品が多くなつている。 Recently, as products in the camera and tape recorder industries become smaller, more and more products are using the rotational force of electromagnets and motors to perform various operations without using human power.
第１図、第２図により上記の用途に適する電磁
石を用いたカム装置の一例を説明する。 An example of a cam device using an electromagnet suitable for the above application will be explained with reference to FIGS. 1 and 2. FIG.
まず、第１図によりモータの回転力を得る機構
について説明する。ギア１はモータによつて減速
され常に回転し、ギア１ａはこのギア１と同軸に
固定されている。カムギア２は、欠歯部２ａ，２
ｂをもち、前記ギア１ａとかみ合い可能位置にあ
る。第１図ａ，ｃでは、カムギア２の欠歯部２
ａ，２ｂがギア１ａと対向位置にあり、ギア１ａ
の回転力は伝達されていない。第１図ｂでは、カ
ムギア２とギア１ａがかみ合い、モータの回転力
がカムギア２へ伝達されている。このとき、カム
ギア２のカム面２ｃと伝達ピン３とが係合してお
り、カム面２ｃの形状に応じて伝達ピン３は十分
な力をもつて移動される。このように第１図ａか
らｂ，ｃとカムギア２が回転することにより伝達
ピン３がａの位置とｃの位置に設定できる。 First, the mechanism for obtaining the rotational force of the motor will be explained with reference to FIG. Gear 1 constantly rotates while being decelerated by a motor, and gear 1a is fixed coaxially with gear 1. The cam gear 2 has toothless parts 2a, 2
b, and is in a position where it can mesh with the gear 1a. In FIGS. 1a and 1c, the toothless portion 2 of the cam gear 2 is shown.
a and 2b are located opposite gear 1a, and gear 1a
rotational force is not transmitted. In FIG. 1b, the cam gear 2 and the gear 1a are in mesh with each other, and the rotational force of the motor is transmitted to the cam gear 2. At this time, the cam surface 2c of the cam gear 2 and the transmission pin 3 are engaged, and the transmission pin 3 is moved with sufficient force depending on the shape of the cam surface 2c. By rotating the cam gear 2 from a to b and c in FIG. 1 in this manner, the transmission pin 3 can be set to the positions a and c.
このａとｃの位置に伝達ピン３を保持しておく
機構を第２図に示す。第２図は第１図のカム装置
の裏面図であり、このカムギア２の裏に爪２ｄが
設けられ、ロツク部材４の一端４ａと当接し回転
を係止されている。このロツク部材４は、他端４
ｂに設けたばね５によりロツクを保持するように
付勢されている。またこのロツク部材４の他端４
ｂには電磁石６が接続されている。第２図ａの状
態から電磁石に通電すると、ばね５に抗してロツ
ク部材４は反時計方向に回動し、ロツク部材の一
端４ａとカムギアの爪２ｄとが離れ、カムギア２
はフリーの状態となる。そしてカム付勢バネ７の
弾発力により爪２ｄが押されて回転力を受けカム
ギア２はギア１ａとかみ合いはじめ、第２図ｂの
ようになる。これが第１図ｂに相当している。第
２図ｂで電磁石６への通電をやめればロツク部材
４は、ばね５により、再びロツク位置にもどりす
なわち第２図ａの位置になる。 A mechanism for holding the transmission pin 3 at positions a and c is shown in FIG. FIG. 2 is a rear view of the cam device shown in FIG. 1. A pawl 2d is provided on the back side of the cam gear 2, and is in contact with one end 4a of the locking member 4 to prevent rotation. This locking member 4 has the other end 4
A spring 5 provided at b is biased to hold the lock. Also, the other end 4 of this locking member 4
An electromagnet 6 is connected to b. When the electromagnet is energized from the state shown in FIG.
becomes free. Then, the pawl 2d is pushed by the elastic force of the cam biasing spring 7, and receives rotational force, and the cam gear 2 begins to mesh with the gear 1a, as shown in FIG. 2b. This corresponds to FIG. 1b. When the electromagnet 6 is de-energized in FIG. 2b, the locking member 4 is returned to the locked position by the spring 5, that is, the position shown in FIG. 2a.
ところが、一般的に電磁石は、第３図のように
吸着力は大きいが、可動鉄心のストロークが増す
と急激に吸引力が減少するという特性をもつてい
る。よつて、上記のカム装置にこのような電磁石
を使おうとすると、容量の大きな、つまりは形状
も大きく電流も多く流さなければならないものと
なり、装置が大型化するという難点があつた。 However, as shown in FIG. 3, electromagnets generally have a large attraction force, but as the stroke of the movable core increases, the attraction force decreases rapidly. Therefore, if such an electromagnet were to be used in the above-mentioned cam device, it would have to have a large capacity, that is, a large shape, and a large amount of current would have to flow through it, resulting in a problem that the device would be large.
本発明は、吸着マグネツト型の電磁石を用いる
ことにより、小型化、省電力化を実現したカム装
置を提供するものである。第４図は吸着マグネツ
ト型の電磁石（以下マグネツト電磁石）の原理
図、第５図はその特性線図、第６図は本実施例の
構成を示すものでカム機構とマグネツト電磁石の
動作を説明するためのものである。 The present invention provides a cam device that achieves miniaturization and power saving by using an attraction magnet type electromagnet. Fig. 4 is a principle diagram of an attraction magnet type electromagnet (hereinafter referred to as a magnet electromagnet), Fig. 5 is a characteristic diagram thereof, and Fig. 6 shows the configuration of this embodiment, and explains the operation of the cam mechanism and magnetic electromagnet. It is for.
まず第４図において吸着マグネツト型電磁石の
構成を説明する。フレーム８にマグネツト９と２
本の固定鉄心１０，１１が固定され、固定鉄心１
０，１１にはコイル１２が巻かれている。このマ
グネツト９には、固定鉄心１０，１１の先端１０
ａ，１１ａがＮ、Ｓ極になるように着磁されてお
り、一方コイル１２は電流を流すとこの磁力をう
ち消すような磁界を発生する。また、固定鉄心の
先端１０ａ，１１ａには可動鉄心１３が当接する
ようになつており、通常は、マグネツト９の吸着
力によつて吸着している。そしてコイル１２に通
電することにより吸着力がなくなり、負荷が開放
される。なお、この１０ａ，１１ａ，１３の各吸
着面は、鏡面に仕上げられ吸着力を上げるように
なつている。 First, the structure of the attraction magnet type electromagnet will be explained with reference to FIG. Magnets 9 and 2 on frame 8
The fixed iron cores 10 and 11 are fixed, and the fixed iron core 1
A coil 12 is wound around 0 and 11. This magnet 9 has tips 10 of fixed cores 10 and 11.
The coils 11a and 11a are magnetized to have N and S poles, while the coil 12 generates a magnetic field that cancels out this magnetic force when a current is passed through the coil 12. Furthermore, the movable core 13 is brought into contact with the tips 10a and 11a of the fixed core, and is normally attracted by the attraction force of the magnet 9. Then, by energizing the coil 12, the attraction force disappears and the load is released. The suction surfaces 10a, 11a, and 13 are mirror-finished to increase suction power.
このマグネツト電磁石の特性を第５図に示す。
横軸に印加電圧Ｖ、縦軸に負荷Ｆをとり、可動鉄
心１３に吸着力に対向した負荷Ｆをかけ、可動鉄
心が落ち始める電圧をプロツトしたものである。
前述のように、電磁石の吸着力は大きいので、設
定負荷Ｆをその吸着力の1/2〜1/3にして保持して
おくことができる。そしてその臨界電圧V1より
大きな電圧を印加すれば、ソレノイドのON−
OFFが可能であり、設定負荷F1がとり出せ、ス
トロークによるロスも少なくパワーが出さ、吸着
力の1/2〜1/3の力でよいため、その分形状も小さ
くできる。ただし、この電磁石は、一旦動作させ
ると、自から可動鉄心をもどすことはできず、他
の力によりもどすことが必要になるものである。 The characteristics of this magnetic electromagnet are shown in FIG.
The applied voltage V is plotted on the horizontal axis and the load F is plotted on the vertical axis, and the voltage at which the movable core 13 starts to fall is plotted when a load F opposite to the adsorption force is applied to the movable core 13.
As mentioned above, since the electromagnet has a large attracting force, the set load F can be maintained at 1/2 to 1/3 of the attracting force. If a voltage greater than the critical voltage V 1 is applied, the solenoid turns ON-
It can be turned off, the set load F 1 can be taken out, power is produced with little loss due to stroke, and only 1/2 to 1/3 of the adsorption force is required, so the shape can be made smaller accordingly. However, once this electromagnet is activated, it cannot return the movable core by itself, and must be returned using another force.
第６図はこのマグネツト電磁石をカム機構に用
いた本発明の一実施例を示す。ギア１ａとカムギ
ア２の関係は、第２図と同様であるが、ロツクア
ーム１４の一端１４ｂはマグネツト電磁石１５の
可動鉄心１３をある程度回動できるように保持
し、他端１４ａはカムギア２の爪２ｄを係止して
いる。 FIG. 6 shows an embodiment of the present invention in which this magnetic electromagnet is used in a cam mechanism. The relationship between the gear 1a and the cam gear 2 is the same as that shown in FIG. is locked.
またロツクアーム１４の下端１４ｂにはもどし
ばね１６の一対が係止され、マグネツト電磁石１
５の吸着力に対向してばね１６で付勢され、マグ
ネツトがなければ、ロツクアームの端１４ａと爪
２ｄの係止が外れる方向にロツクアームを回動さ
せるように付勢されている。 Further, a pair of return springs 16 are locked to the lower end 14b of the lock arm 14, and the magnetic electromagnet 1
If there were no magnet, the lock arm would be rotated in the direction in which the end 14a of the lock arm and the pawl 2d would be disengaged.
ここで第６図ａはマグネツトの吸着力によりロ
ツク（爪２ｄの係止状態）が保持され、カムギア
２は第１図のａあるいはｃの状態を保つている。
この状態からマグネツト電磁石１５に通電すると
マグネツトの吸着力が打消され、ばね１６の力に
よりロツクアームの端１４ａがはずれる。第６図
ｂは、上述のようにしてマグネツト電磁石１５が
動作し、ギア１ａとカムギア２とがかみあうよう
になつた所を示し、この時モータの力がギア１ａ
からカムギア２へ伝わる。そこでこのモータの力
を利用し、前述の可動鉄心１３をもどしてやる力
をとり出すために、カムギア２の爪２ｄの外側に
カム部２ｅを設け、ロツクアームの先端１４ａと
係合可能としている。この時、可動鉄心１３があ
る程度の回動が可能ならば、カム部２ｅによりロ
ツクアーム１４を回動して吸着位置までもつてい
かなくても、少し手前でマグネツトにより可動鉄
心１３は吸着され、また第６図ａの状態にもどる
ことができる。 Here, in FIG. 6a, the lock (locked state of the pawl 2d) is maintained by the attraction force of the magnet, and the cam gear 2 is maintained in the state shown in FIG. 1 a or c.
When the magnetic electromagnet 15 is energized from this state, the attraction force of the magnet is canceled and the end 14a of the lock arm is released by the force of the spring 16. FIG. 6b shows the state where the magnetic electromagnet 15 operates as described above and the gear 1a and the cam gear 2 come into meshing, and at this time the force of the motor is transferred to the gear 1a.
is transmitted to cam gear 2. Therefore, in order to utilize the power of this motor to extract the force for returning the movable core 13, a cam portion 2e is provided on the outside of the pawl 2d of the cam gear 2 so as to be able to engage with the tip 14a of the lock arm. At this time, if the movable core 13 can rotate to a certain extent, the movable core 13 will be attracted by the magnet a little before the lock arm 14 is rotated by the cam part 2e to the suction position, and It is possible to return to the state shown in FIG. 6a.
以上のように本発明によれば、一つのカムギア
に、動力の取り出すカム部と、ロツク部材に係合
する爪と、そのロツク部材をもとにもどすカム部
とを設け、ロツク部材をカムギアの爪に係合する
方向とは反対方向のロツク解除方向にばね付勢す
るようにしたことにより、吸着マグネツト型電磁
石をトリガー用として使用することができる。そ
して、吸着マグネツト型電磁石をトリガー用とし
て使用する時、ロツク部材を付勢するばね力をカ
ムギアのトリガー用としても作用させることがで
きるので、小さな電流で大きな駆動力を取り出す
ことが可能なカム装置を実現することができる。
また、部品点数も少なく、小型、軽量に構成でき
かつ省電力化されているから、各種小型機器に適
用して効果の大なるものである。 As described above, according to the present invention, one cam gear is provided with a cam portion for extracting power, a pawl that engages with the lock member, and a cam portion that returns the lock member to its original position, and the lock member is connected to the cam gear. By biasing the spring in the unlocking direction opposite to the direction in which the claw engages, the attraction magnet type electromagnet can be used as a trigger. When the adsorption magnet type electromagnet is used as a trigger, the spring force that biases the locking member can also be used to trigger the cam gear, so the cam device can generate a large driving force with a small current. can be realized.
Furthermore, since the number of parts is small, the structure can be made compact and lightweight, and the power consumption is reduced, it can be applied to various small-sized devices with great effect.
第１図はカム装置の動作を示す平面図、第２図
は電磁石を用いたカム装置を示す裏面図、第３図
は一般的な電磁石の特性線図、第４図は吸着マグ
ネツト型電磁石の構造図、第５図はその特性線
図、第６図は本発明の一実施例の動作を説明する
ための裏面図である。
１，１ａ……ギア、２……カムギア、２ａ，２
ｂ……欠歯部、２ｄ……爪、２ｅ……カム部、１
３……可動鉄心、１４……ロツクアーム、１５…
…吸着マグネツト型電磁石、１６……もどしば
ね。
Fig. 1 is a plan view showing the operation of the cam device, Fig. 2 is a back view showing the cam device using an electromagnet, Fig. 3 is a characteristic diagram of a general electromagnet, and Fig. 4 is a diagram of an adsorption magnet type electromagnet. FIG. 5 is a structural diagram thereof, FIG. 5 is a characteristic diagram thereof, and FIG. 6 is a back view for explaining the operation of an embodiment of the present invention. 1, 1a... Gear, 2... Cam gear, 2a, 2
b...Toothless part, 2d...Claw, 2e...Cam part, 1
3...Movable iron core, 14...Lock arm, 15...
...Adsorption magnet type electromagnet, 16...Return spring.
Claims (1)
と、この原動ギアとかみあい位置にあり、欠歯部
をもつカムギアと、このカムギアを前記欠歯部で
前記原動ギアと対向させる位置にロツクするよう
に前記カムギアに設けた爪に一端が係合可能で、
かつ回動可能に支持されたロツク部材と、このロ
ツク部材を前記カムギアの爪とのロツク状態から
解除する方向に付勢するばねと、前記ロツク部材
の他端に可動可能に保持された可動鉄心と、前記
ロツク部材がロツク位置にあるとき前記可動鉄心
を吸着するマグネツトおよびこのマグネツトの吸
着力を打ち消す方向に磁界を発生するコイルを含
み、前記マグネツトの吸着力が前記ロツク部材に
よる前記カムギアのロツク方向に作用するように
前記可動鉄心に対向配置した吸着マグネツト型電
磁石とを備え、前記カムギアがその欠歯部でギア
と対向するロツク位置から、前記コイルに電流を
流し、前記マグネツトの吸着力が消えることによ
りロツク部材が前記ばねの力を受けて回動しロツ
クを外すと共に前記カムギアをトリガーし、前記
カムギアが前記原動ギアとかみ合つてモータの回
転力を前記カムギアの第１のカム部に伝達し、一
方前記カムギアの第２のカム部により、モータの
回転力を使つて前記ロツク部材を回動させて他端
の可動鉄心をマグネツトの吸着位置までもどし前
記ロツク位置に至らせるように構成したことを特
徴とするカム装置。1. A driving gear to which the rotational force of the motor is constantly transmitted, a cam gear that is in mesh with the driving gear and has a toothless portion, and a cam gear that locks the cam gear in a position facing the driving gear with the toothless portion. one end is engageable with a pawl provided on the cam gear,
a lock member rotatably supported; a spring biasing the lock member in a direction to release the lock member from the locking state with the pawl of the cam gear; and a movable iron core movably held at the other end of the lock member. The cam gear includes a magnet that attracts the movable iron core when the lock member is in the lock position, and a coil that generates a magnetic field in a direction that cancels the attraction force of the magnet, and the attraction force of the magnet causes the lock member to lock the cam gear. an adsorption magnet-type electromagnet disposed opposite to the movable iron core so as to act in the direction, and from a locked position where the cam gear faces the gear at its toothless portion, a current is applied to the coil to increase the adsorption force of the magnet. When it disappears, the lock member rotates under the force of the spring to release the lock and trigger the cam gear, and the cam gear meshes with the drive gear to transfer the rotational force of the motor to the first cam portion of the cam gear. On the other hand, a second cam portion of the cam gear rotates the locking member using the rotational force of the motor to return the movable iron core at the other end to the magnet attraction position and reach the locking position. A cam device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12005782A JPS5913140A (en) | 1982-07-09 | 1982-07-09 | Cam device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12005782A JPS5913140A (en) | 1982-07-09 | 1982-07-09 | Cam device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5913140A JPS5913140A (en) | 1984-01-23 |
| JPH0159455B2 true JPH0159455B2 (en) | 1989-12-18 |
Family
ID=14776817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12005782A Granted JPS5913140A (en) | 1982-07-09 | 1982-07-09 | Cam device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5913140A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6166678A (en) * | 1984-09-10 | 1986-04-05 | Shinko Seisakusho:Kk | Printing mechanism |
| US5139891A (en) * | 1991-07-01 | 1992-08-18 | Olin Corporation | Palladium alloys having utility in electrical applications |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58141447U (en) * | 1982-03-19 | 1983-09-22 | ソニー株式会社 | Intermittent gear intermittent actuation device |
-
1982
- 1982-07-09 JP JP12005782A patent/JPS5913140A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5913140A (en) | 1984-01-23 |
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| JPH0782679B2 (en) | Operation switching mechanism in tape recorder | |
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| JPS6116657Y2 (en) | ||
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| JPH0412646Y2 (en) | ||
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