JP2707172B2 - Screw cam mechanism - Google Patents
Screw cam mechanismInfo
- Publication number
- JP2707172B2 JP2707172B2 JP3242583A JP24258391A JP2707172B2 JP 2707172 B2 JP2707172 B2 JP 2707172B2 JP 3242583 A JP3242583 A JP 3242583A JP 24258391 A JP24258391 A JP 24258391A JP 2707172 B2 JP2707172 B2 JP 2707172B2
- Authority
- JP
- Japan
- Prior art keywords
- feed
- screw
- feeder
- shaft
- thread
- 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 - Fee Related
Links
Landscapes
- Transmission Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ねじ式カム機構に関
し、特に、ねじ送り機構とカム機構とを兼備したねじ式
カム機構に関する。本発明は、回転機器の動作を制御す
るリミットスイッチの制御に応用して好適である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw cam mechanism, and more particularly, to a screw cam mechanism having both a screw feed mechanism and a cam mechanism. INDUSTRIAL APPLICATION This invention is suitable for application to the control of the limit switch which controls operation | movement of rotary equipment.
【０００２】[0002]
【従来の技術】ねじとナットを利用したカム機構は従来
から知られている。従来のこの種のカム機構は、ねじを
回転させることによりナットを移動させて所定位置に設
けたリミットスイッチ等を動作させている。このカム機
構は、ねじ及びナットの係合が確実であるために、リミ
ットスイッチ等を動作させるまでのねじの回転数を正確
に制御できる利点がある。 2. Description of the Related Art A cam mechanism using a screw and a nut has been conventionally known. In this type of conventional cam mechanism, a nut is moved by rotating a screw to operate a limit switch or the like provided at a predetermined position. This cam machine
The structure is limited so that the screw and nut can be securely engaged.
The screw rotation speed before operating the switch
There is an advantage that can be controlled.
【０００３】[0003]
【発明が解決しようとする課題】ところで、カム機構で
は、このカム機構をリセットするために、リミットスイ
ッチ等を作動させる所望位置に素早くナットを移動させ
たい場合がある。しかし、ナットをねじから分離して所
望位置に移動させることは不可能であった。よって、こ
の場合のように、ナットを現位置から遠く離れた所望位
置に移動させるためには、ねじを多数回、回転させなけ
ればならなかった。したがって、本発明の目的は、ねじ
の係合を用いてねじの回転数により確実にリミットスイ
ッチ等を制御できると共に、ねじの係合を簡単に解放す
ることが可能な構造のねじ式カム機構を提供することで
ある。 By the way, with a cam mechanism,
Reset switch to reset the cam mechanism.
Quickly move the nut to the desired position
Sometimes you want to. However, when the nut is separated from the screw
It was impossible to move it to the desired position. Therefore,
Position the nut far from its current position, as in
To move the screw, turn the screw many times.
I had to. Therefore, the object of the present invention
The limit switch is surely controlled by the screw rotation speed
Switch, etc., and easily release the screw engagement.
By providing a screw-type cam mechanism with a structure
is there.
【０００４】[0004]
【課題を解決するための手段及び作用】本発明のねじ式
カム機構によれば、送りねじ部１２は、第１ねじ山を有
する第１送り部１４、及び外径が第１ねじ山の外径より
も大きい第２ねじ山を有し第１送り部１４に結合した第
２送り部１６から構成されており、これら第１送り部及
び第２送り部の軸が共通である。また、ローラ２２は、
送りねじ部１２の第１送り部及び第２送り部のねじ溝に
係合可能なフランジ２０を有しており、送りねじ部の軸
１０に平行に移動可能である第２軸２４に取り付けられ
ている。そして、フランジ２０が送りねじ部１２の第１
送り部又は第２送り部のねじ溝に係合状態ときに、送り
ねじ部１２をこの送りねじ部の一方の回転方向（矢印２
８の方向）に回転させると、ローラ２２が第１送り部１
４から第２送り部１６に向かう方向に移動して、ローラ
２２が第１送り部１４から第２送り部１６に移動する
と、第２軸２４が送りねじ部の軸１０から遠のく。ま
た、送りねじ部１２を一方の回転方向と逆方向（矢印２
８と逆方向）に回転させると、ローラ２２が第２送り部
１６から第１送り部１４に向かう方向に移動して、ロー
ラ２２が第２送り部１６から第１送り部１４に移動する
と、第２軸２４が送りねじ部の軸１０に近づく。よっ
て、ローラ２２は、フランジ２０を有するので、送りね
じ部１２の第１送り部１４及び第２送り部１６と確実に
係合することができると共に、ねじの係合を簡単に解放
可能な構造となる。また、第１ねじ山及び第２ねじ山の
外径が異なるので、ローラ２２の移動に応じて、第２軸
２４の位置を送りねじ部１２の軸１０に対して、確実に
制御できる。この第２軸２４の位置の変化によりリミッ
トスイッチ等を制御できる。 Means and action for solving the problem The screw type of the present invention
According to the cam mechanism, the feed screw portion 12 has the first thread.
The first feed portion 14 and the outer diameter are larger than the outer diameter of the first thread.
The second thread having a larger second thread and being coupled to the first feeder 14
The first feed unit and the second feed unit 16
And the axis of the second feed unit are common. The roller 22 is
In the screw grooves of the first feed portion and the second feed portion of the feed screw portion 12,
It has an engageable flange 20 and has a shaft of a feed screw portion.
Attached to a second shaft 24 which is movable parallel to 10
ing. And the flange 20 is the first of the feed screw portion 12.
When engaged with the thread groove of the feed portion or the second feed portion,
The screw portion 12 is rotated in one rotation direction (arrow 2) of the feed screw portion.
8), the roller 22 is rotated by the first feeder 1
4 in the direction toward the second feed unit 16 and the roller
22 moves from the first feed unit 14 to the second feed unit 16
Then, the second shaft 24 is far from the shaft 10 of the feed screw portion. Ma
In addition, the feed screw portion 12 is turned in the direction opposite to one of the rotation directions (arrow 2).
8 in the opposite direction), the roller 22
16 in the direction toward the first feed unit 14 and
Is moved from the second feed unit 16 to the first feed unit 14
Then, the second shaft 24 approaches the shaft 10 of the feed screw portion. Yo
The roller 22 has the flange 20 so
The first feed portion 14 and the second feed portion 16 of the binding portion 12
Able to engage and easily release screw engagement
It becomes a possible structure. In addition, the first thread and the second thread
Since the outer diameter is different, the second shaft
Position 24 with respect to the axis 10 of the feed screw 12
Can control. The change in the position of the second shaft 24
Switch can be controlled.
【０００５】[0005]
【実施例】図１及び図２は、本発明の実施例を説明する
ための図である。図１及び図２は、夫々本発明に係るね
じ式カム機構の側面図、図３は図１のＡ−Ａから見た断
面図である。1 and 2 are views for explaining an embodiment of the present invention. 1 and 2 are side views of a screw cam mechanism according to the present invention, respectively, and FIG. 3 is a cross-sectional view taken along AA in FIG.
【０００６】図１に示すように、軸１０に固定されたリ
ードドラム１１は、送りねじ部１２と端部１８からな
る。送りねじ部１２は、外径Ｄ１の第１ねじ山を有する
第１送り部１４と、外径Ｄ２（図３参照）の第２ねじ山
を有する第２送り部１６とを有する。送りねじ部１２と
端部１８は適当な合成樹脂で作成され、通常一体整形さ
れる。尚、送りねじ部１２は軸１０に必ずしも固定され
る必要はなく、選択的に軸１０と嵌合して回転するよう
にしてもよい。As shown in FIG. 1, a lead drum 11 fixed to a shaft 10 comprises a feed screw portion 12 and an end portion 18. The feed screw section 12 has a first feed section 14 having a first thread having an outer diameter D1 and a second feed section 16 having a second thread having an outer diameter D2 (see FIG. 3). The feed screw portion 12 and the end portion 18 are made of a suitable synthetic resin and are usually integrally formed. Note that the feed screw portion 12 does not necessarily need to be fixed to the shaft 10 and may be selectively fitted to the shaft 10 and rotated.
【０００７】送りねじ部１２の上方（図面上）にはフラ
ンジ２０を一端に有するローラ２２が軸２４に回転自在
に設けられ、フランジ２０は、第１及び第２送り部１
４、１６の夫々のねじ溝と係合可能である。部材２６は
軸２４に固定され、後述するように、ローラ２２の移動
により上方に移動し、例えば、リミットスイッチ（図示
せず）を動作させる。なお、軸２４は、図１及び図２に
示すように上下、即ち、送りねじ部１２の軸１０に平行
に移動可能である。 A roller 22 having a flange 20 at one end is rotatably provided on a shaft 24 above the feed screw portion 12 (on the drawing), and the flange 20 is connected to the first and second feed portions 1.
It can be engaged with each of the thread grooves 4 and 16. The member 26 is fixed to the shaft 24 and moves upward by the movement of the roller 22, as described later, and operates, for example, a limit switch (not shown). In addition, the shaft 24 is shown in FIGS.
As shown, up and down, that is, parallel to the axis 10 of the feed screw 12
Can be moved to
【０００８】ローラ２２が、図１に示すように、第１送
り部１４の位置にあるとする。この状態で軸１０を矢印
２８で示す方向に回転させると、ローラ２２は矢印３０
の方向に移動する。ローラ２２が第１送り部１４の左端
に達すると、フランジ２０は、第２送り部の外径Ｄ２の
ねじにより、図２に示すように上方に移動する。従っ
て、軸２４に固定された部材２６も上方に移動し、リミ
ットスイッチ等を動作させることが出来る。[0008] It is assumed that the roller 22 is located at the position of the first feed unit 14 as shown in FIG. When the shaft 10 is rotated in the direction shown by the arrow 28 in this state, the roller 22
Move in the direction of. When the roller 22 reaches the left end of the first feed unit 14, the flange 20 is moved upward by a screw having an outer diameter D2 of the second feed unit as shown in FIG. Therefore, the member 26 fixed to the shaft 24 also moves upward, and the limit switch and the like can be operated.
【０００９】第２送り部１６について、図３を参照して
詳細に説明する。図３に示すように、第２送り部１６の
ねじは、第１送り部１４のねじの外径Ｄ１より大きい外
径Ｄ２を有する。第２送り部１６のねじのねじ山は、ロ
ーラ２２のフランジ２０が第１送り部１４から第２送り
部１６に移動できるように、第１傾斜部３６を有する。
即ち、ローラ２２が、第１送り部１４の左端に達する
と、第１傾斜部３６に案内されて外径Ｄ２のねじ山３４
に乗る（図２の状態）。軸１０が更に矢印２８の方向に
回転すると、ローラ２２は第２傾斜部３２から第１傾斜
部３６に移動し、再び外径Ｄ２のねじ山３４に乗り、こ
の動作を繰り返す。The second feeding section 16 will be described in detail with reference to FIG. As shown in FIG. 3, the screw of the second feed unit 16 has an outer diameter D2 larger than the outer diameter D1 of the screw of the first feed unit 14. The thread of the screw of the second feed portion 16 has a first inclined portion 36 so that the flange 20 of the roller 22 can move from the first feed portion 14 to the second feed portion 16.
That is, when the roller 22 reaches the left end of the first feeding portion 14, the roller 34 is guided by the first inclined portion 36 and has a thread 34 having an outer diameter D2.
(State of FIG. 2). When the shaft 10 further rotates in the direction of the arrow 28, the roller 22 moves from the second inclined portion 32 to the first inclined portion 36, rides on the thread 34 having the outer diameter D2 again, and repeats this operation.
【００１０】ローラ２２が第２送り部１６に位置すると
き、軸１０が矢印２８の方向に回転し続ける場合、フラ
ンジ２０が第２傾斜部３２から第１傾斜部３６に正確に
移行しなければならない。このため、第１及び第２傾斜
部の間のねじ溝を充分に深くすることが望ましい。尚、
ローラ２２が第２傾斜部３２から第１傾斜部３６に乗り
移る際、部材２６は一旦下方に移動するが、ローラ２２
が最初にねじ山３４に乗った際のスイッチの状態を電気
的に保持するように制御回路を設計すれば何等支障はな
い。If the shaft 10 continues to rotate in the direction of the arrow 28 when the roller 22 is located at the second feed portion 16, the flange 20 must accurately transition from the second inclined portion 32 to the first inclined portion 36. No. For this reason, it is desirable to make the screw groove between the first and second inclined portions sufficiently deep. still,
When the roller 22 moves from the second inclined portion 32 to the first inclined portion 36, the member 26 temporarily moves downward.
If the control circuit is designed so as to electrically maintain the state of the switch when the switch first rides on the thread 34, there is no problem at all.
【００１１】ローラ２２が図２に示す第２送り部１６に
位置にあるとき、軸１０を矢印２８で示す方向と逆方向
に回転させると、ローラ２２は、ねじ山３４から第１傾
斜部３６を介して第１送り部１４に移動する（図１参
照）。When the shaft 10 is rotated in the direction opposite to the direction indicated by the arrow 28 when the roller 22 is located at the second feed portion 16 shown in FIG. (See FIG. 1).
【００１２】[0012]
【発明の効果】上述の如く、本発明によれば、ローラ２
２は、フランジ２０を有するので、送りねじ部１２の第
１送り部１４及び第２送り部１６と確実に係合すること
ができるので、送りねじ部の回転に応じてローラを正確
に移動できる。また、送りねじ部及びフランジの係合が
簡単に解放できる構造のため、軸２４を上方に移動させ
れば、ローラ２２をねじ送り部１２から簡単に分離でき
るので、ローラ２２の位置変更は極めて容易にかつ迅速
に行なうことが出来る。さらに、第１ねじ山及び第２ね
じ山の外径が異なるので、ローラ２２の移動に応じて、
第２軸２４の位置を送りねじ部１２の軸１０に対して、
確実に制御できる。この第２軸２４の位置の変化により
リミットスイッチ等を制御することができる。 As described above, according to the present invention, the roller 2
2 has the flange 20, so that the feed screw portion 12
Secure engagement with the first feed unit 14 and the second feed unit 16
The roller can be accurately adjusted according to the rotation of the lead screw.
Can be moved to Also, the engagement of the feed screw and the flange
Due to the structure that can be easily released , the roller 22 can be easily separated from the screw feed portion 12 by moving the shaft 24 upward, so that the position change of the roller 22 can be performed very easily and quickly. In addition, the first thread and the second thread
Since the outer diameter of the ridge is different, according to the movement of the roller 22,
Position of the second shaft 24 with respect to the shaft 10 of the feed screw portion 12
Can be controlled reliably. Due to the change in the position of the second shaft 24,
Limit switches and the like can be controlled.
【図１】本発明に係る装置の側面図。FIG. 1 is a side view of an apparatus according to the present invention.
【図２】本発明に係る装置の側面図。FIG. 2 is a side view of the device according to the present invention.
【図３】図１のＡ−Ａから見た断面図。FIG. 3 is a sectional view as viewed from AA in FIG. 1;
１０ 軸 １２ 送りねじ部 １４ 第１送り部 １６ 第２送り部 ２０ フランジ ２２ ローラ ２４ 軸 ３２ 第２傾斜部 ３４ ねじ山 ３６ 第１傾斜部 10 axis 12 feed screw part 14 first feed part 16 second feed part 20 flange 22 roller 24 axis 32 second inclined part 34 screw thread 36 first inclined part
Claims (1)
径が上記第１ねじ山の外径よりも大きい第２ねじ山を有
し上記第１送り部に結合した第２送り部から成り、上記
第１送り部及び上記第２送り部の軸が共通である送りね
じ部と、 該送りねじ部の軸に平行に移動可能である第２軸と、 上記送りねじ部の上記第１送り部及び上記第２送り部の
ねじ溝に係合可能なフランジを有し、上記第２軸に取り
付けられたローラとを具え、 上記フランジが上記送りねじ部の上記第１送り部又は上
記第２送り部のねじ溝に係合状態のときに、上記送りね
じ部を該送りねじ部の一方の回転方向に回転させると、
上記ローラが上記第１送り部から上記第２送り部に向か
う方向に移動して、上記ローラが上記第１送り部から上
記第２送り部に移動すると、上記第２軸が上記送りねじ
部の軸から遠のき、 上記送りねじ部を上記一方の回転方向と逆方向に回転さ
せると、上記ローラが上記第２送り部から上記第１送り
部に向かう方向に移動して、上記ローラが上記第２送り
部から上記第１送り部に移動すると、上記第２軸が上記
送りねじ部の軸に近づく ことを特徴とするねじ式カム機
構。A first feed portion having a first thread and an outer portion;
Has a second thread whose diameter is larger than the outer diameter of the first thread
And a second feed unit coupled to the first feed unit,
A feeder having a common axis of the first feeder and the second feeder.
And a second shaft movable in parallel with the axis of the feed screw portion, and a first feed portion and a second feed portion of the feed screw portion.
It has a flange that can be engaged with the thread groove, and is mounted on the second shaft.
And a flange attached to the first feed portion or the upper portion of the feed screw portion.
When the screw is engaged with the thread groove of the second feed portion,
When the screw portion is rotated in one rotation direction of the feed screw portion,
The roller moves from the first feeder to the second feeder
And the roller moves upward from the first feeder.
When moving to the second feed portion, the second shaft is driven by the feed screw.
The feed screw is turned away from the axis of the
When the roller is moved from the second feeder to the first feeder
The roller moves in the direction toward the
Moving from the section to the first feed section, the second axis
A screw-type cam mechanism characterized by approaching the axis of the feed screw portion .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3242583A JP2707172B2 (en) | 1991-08-28 | 1991-08-28 | Screw cam mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3242583A JP2707172B2 (en) | 1991-08-28 | 1991-08-28 | Screw cam mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05118402A JPH05118402A (en) | 1993-05-14 |
| JP2707172B2 true JP2707172B2 (en) | 1998-01-28 |
Family
ID=17091221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3242583A Expired - Fee Related JP2707172B2 (en) | 1991-08-28 | 1991-08-28 | Screw cam mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2707172B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5414461B2 (en) * | 2009-10-30 | 2014-02-12 | 株式会社ミツバ | Linear actuator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58200274A (en) * | 1982-05-19 | 1983-11-21 | Ricoh Co Ltd | Attaching and detaching device of member such as photoreceptor or the like in copying machine |
| JPS6453993A (en) * | 1987-08-21 | 1989-03-01 | Kamei Machine Project | Nozzle lever rocking device |
| JPH01121024U (en) * | 1988-02-08 | 1989-08-16 |
-
1991
- 1991-08-28 JP JP3242583A patent/JP2707172B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05118402A (en) | 1993-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2274229A1 (en) | Control wand for coverings for architectural openings | |
| JP2707172B2 (en) | Screw cam mechanism | |
| EP0792691B1 (en) | Shredder with mechanical sensor | |
| AU581824B2 (en) | Control device for a vertical shaft type engine | |
| US3977258A (en) | Traverse mechanism | |
| DE102015122984A1 (en) | Reversing camera device for motor vehicles | |
| DE60014524T2 (en) | Guiding structure for controlling the direction of travel of a swivel arm | |
| JPH10264660A (en) | Driving device for adjustable and movable vehicle part | |
| JP2707173B2 (en) | Screw type cam mechanism with reference position setting function | |
| JPH0822716B2 (en) | Tape winding method | |
| JPH05118403A (en) | Screw mechanism having reference-position setting function | |
| JP2524146Y2 (en) | Biasing mechanism | |
| NL194021C (en) | Switch with mechanical limitation. | |
| JP2782584B2 (en) | Revolving type winding machine | |
| KR200149853Y1 (en) | Location control device of tail spindle | |
| JPH049603Y2 (en) | ||
| KR200256765Y1 (en) | Transmission for belt drive | |
| JPH02206378A (en) | Rotation angle controller | |
| JPH0260205B2 (en) | ||
| JPS5936228Y2 (en) | Fixed position stop device for electric sewing machine | |
| KR0109492Y1 (en) | Rotary positioner over-limit detecting device | |
| KR930006228Y1 (en) | Paper guide for fax | |
| JP2003333372A (en) | Video camera | |
| JP2000130539A (en) | Output device | |
| JPH04179674A (en) | Traverse control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970909 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081017 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091017 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091017 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101017 Year of fee payment: 13 |
|
| LAPS | Cancellation because of no payment of annual fees |