JPH061086B2 - Overload clutch trip torque setting mechanism - Google Patents
Overload clutch trip torque setting mechanismInfo
- Publication number
- JPH061086B2 JPH061086B2 JP24652289A JP24652289A JPH061086B2 JP H061086 B2 JPH061086 B2 JP H061086B2 JP 24652289 A JP24652289 A JP 24652289A JP 24652289 A JP24652289 A JP 24652289A JP H061086 B2 JPH061086 B2 JP H061086B2
- Authority
- JP
- Japan
- Prior art keywords
- adjusting nut
- scale
- trip torque
- overload clutch
- torque
- 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 - Lifetime
Links
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
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/202—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type
- F16D43/204—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with intermediate balls or rollers
- F16D43/206—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with intermediate balls or rollers moving axially between engagement and disengagement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、オーバーロードクラッチにおいて従動部に過
負荷が加わりトルク伝達が行われなくなるときのトル
ク、即ち、トリップトルクの調節を正確、且つ、容易に
行うための機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to accurately and easily adjust the torque when an overload is applied to a driven portion in an overload clutch and torque transmission is stopped. Regarding the mechanism for doing.
従来技術及びその課題 トルク伝達機構の駆動部と従動部との間に設けて、負荷
トルクが所定値以上になったとき、駆動トルクを逃が
し、駆動側及び従動側の機構の損傷を防止する安全装置
の一種としていわゆるオーバーロードクラッチがある。Prior art and its problem A safety is provided between the drive section and the driven section of the torque transmission mechanism to release the drive torque when the load torque exceeds a predetermined value and prevent damage to the drive side and driven side mechanisms. There is a so-called overload clutch as one type of device.
このようなオーバーロードクラッチは、一般に、ハブの
筒状部に設けたねじ部に調節ナットをねじ込むことによ
りばねを圧縮して所定のトリップトルクを発生させるよ
うになっている。そして、駆動側の負荷トルクが所定値
以上になると、駆動側が従動側に対して空転して駆動ト
ルクを逃がすようになっている。この限界トルクの値が
いわゆるトリップトルクである。In such an overload clutch, generally, an adjusting nut is screwed into a threaded portion provided on the tubular portion of the hub to compress the spring and generate a predetermined trip torque. Then, when the load torque on the drive side exceeds a predetermined value, the drive side idles with respect to the driven side to release the drive torque. The value of this limit torque is the so-called trip torque.
従って、ばねの圧縮量がトリップトルクを決定すること
になるから、前記調節ナットの筒状部に対するねじ込み
は、トリップトルクを適切に設定するために慎重に行わ
れなければならず、実開昭６４−３１３０号公報に記載
のようなトリップトルク設定機構を使用して行われてい
る。Therefore, since the amount of compression of the spring determines the trip torque, the screwing of the adjusting nut into the tubular portion must be done carefully in order to properly set the trip torque. It is carried out by using a trip torque setting mechanism as described in JP-A-3130.
前記公報の機構は、ハブにねじ部のピッチに合致する螺
旋状の線を、調節ナットにインジケータをそれぞれ設け
たものであり、インジケータの端部と螺旋状の線の角度
目盛数字との位置関係から調節ナットの回転角、すなわ
ちトリップトルクを読取るようにしている。The mechanism of the above-mentioned publication is such that a hub is provided with a spiral line that matches the pitch of the threaded portion and an adjusting nut is provided with an indicator, respectively, and the positional relationship between the end of the indicator and the angular scale number of the spiral line is provided. The rotation angle of the adjusting nut, that is, the trip torque is read from.
ところが、このような機構であると、角度目盛を設ける
ため目盛の幅の分だけ、ハブが長くなりクラッチ全体が
大きくなることと、インジケータを別に設けなければな
らないことと、長時間使用している間に振動等によりイ
ンジケータが弛んで、読取りが不正確になる可能性があ
るという問題点を有している。However, with such a mechanism, since the angle scale is provided, the hub becomes longer and the clutch as a whole becomes larger by the width of the scale, and the indicator must be provided separately, and it is used for a long time. In the meantime, there is a problem in that the indicator may be loosened due to vibration or the like, and the reading may be inaccurate.
課題を解決するための手段 本発明は、ハブの筒状部に設けたねじ部に調節ナットを
ねじ込むことによりばねを圧縮して所定のトリップトル
クを発生させるようにしたオーバーロードクラッチにお
いて、前記筒状部のねじ部の一部に平坦部を設け、該平
坦部に軸と平行に延びる基準線と前記ねじ部のねじピッ
チと合致する整数回転数目盛を設けるとともに、前記調
節ナットの外側に円周方向を等分する端数回転数目盛を
設け、前記調節ナットの端面と整数回転数目盛の関係か
ら整数回転数を、基準線と端数回転数目盛の関係から端
数回転数をそれぞれ読取るようにしたオーバーロードク
ラッチのトリップトルク設定機構構により、前記の課題
を解決した。Means for Solving the Problems The present invention relates to an overload clutch in which an adjusting nut is screwed into a threaded portion provided on a tubular portion of a hub to compress a spring to generate a predetermined trip torque. A flat portion is provided on a part of the threaded portion of the threaded portion, a reference line extending parallel to the axis is provided on the flat portion, and an integer rotational speed scale that matches the thread pitch of the threaded portion is provided, and a circle is provided outside the adjustment nut. A fractional rotation speed scale that equally divides the circumferential direction is provided, and the integer rotation speed is read from the relationship between the end surface of the adjusting nut and the integer rotation speed scale, and the fractional rotation speed is read from the relationship between the reference line and the fraction rotation speed scale. The above problems have been solved by the trip torque setting mechanism of the overload clutch.
作 用 調節ナットを基準位置から締め込んでいくと、調節ナッ
トはねじ部上を回転しながら進んでいくが、調節ナット
の端面と整数回転数目盛の位置関係から調節ナットの整
数回転数を、基準線と端数回転数目盛の位置関係から端
数回転数を容易に読取ることができる。調節ナットの回
転数に対するトリップトルクの関係は予め知られている
ので、容易に所望のトリップトルクに設定することがで
きる。When tightening the working adjustment nut from the reference position, the adjustment nut advances while rotating on the threaded portion, but the integer number of revolutions of the adjustment nut is changed from the positional relationship between the end face of the adjustment nut and the integer number of revolutions scale. The fractional rotation speed can be easily read from the positional relationship between the reference line and the fractional rotation speed scale. Since the relationship of the trip torque to the rotation speed of the adjusting nut is known in advance, it is possible to easily set a desired trip torque.
実施例 以下、本発明の実施例を図面に基づいてオーバーロード
クラッチの一種であるボールクラッチを例として説明す
る。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings by taking a ball clutch which is a kind of an overload clutch as an example.
ボールクラッチ１０の回転軸Ａ（ハブ１１）を駆動側、
ドリブンプレート１２を従動側として説明する。The rotation axis A (hub 11) of the ball clutch 10 is on the drive side,
The driven plate 12 will be described as the driven side.
回転側Ａを左右何れかの方向に回転すると、キー（図示
省略。）とキー溝１３を介してハブ１１が同一方向に回
転する。すると、各ボール保持穴１４に係合している各
ボール１５（図面には１つのみ図示。）は、各ボール保
持貫通孔１６を介してドリブンプレート１２をハブ１１
と一体に同一方向に回転させる。ドリブンプレート１２
に所定のトリップトルクが加わると、各ボール１５が皿
ばね１７に抗して各ボール保持穴１４から脱出し、ハブ
１１の鍔１８の側面１８ａに乗り上がってハブ１１のみ
を回転させ、駆動トルクを逃がす。When the rotation side A is rotated in either the left or right direction, the hub 11 rotates in the same direction via the key (not shown) and the key groove 13. Then, each ball 15 (only one is shown in the drawing) engaged with each ball holding hole 14 moves the driven plate 12 to the hub 11 via each ball holding through hole 16.
And rotate it in the same direction. Driven plate 12
When a predetermined trip torque is applied to the ball 15, each ball 15 escapes from each ball holding hole 14 against the disc spring 17, rides on the side surface 18a of the collar 18 of the hub 11 and rotates only the hub 11, and the driving torque is increased. Escape.
従って、皿ばね１７の押圧力、すなわち調節ナット１９
の位置によってボール１５がボール保持穴１４から脱出
するトリップトルクが決定される。なお、駆動トルクを
逃がしている状態は、プレッシャープレート２０にベア
リング２１を介して皿ばね１７によって押圧されている
センサプレート２２の動きをセンサＳが検知することに
よって電気的に検知され、駆動モータ（図示せず。）を
停止させる等の処置が講じられる。Therefore, the pressing force of the disc spring 17, that is, the adjusting nut 19
The position at which the ball 15 escapes from the ball holding hole 14 determines the trip torque. The state in which the drive torque is released is electrically detected by the sensor S detecting the movement of the sensor plate 22 pressed by the disc spring 17 via the bearing 21 against the pressure plate 20, and the drive motor ( (Not shown) is taken.
次に、本発明の主要部である読取機構３０について説明
する。Next, the reading mechanism 30 which is the main part of the present invention will be described.
読取機構３０は、整数回転数目盛板３１と、端数回転数
目盛板３２とで構成されている。整数回転数目盛板３１
は、第２図に示すように、軸と平行に延びる基準線３３
にハブ１１の筒状部２３のねじ部２４のピッチと同一の
目盛３４が印刷されている。この整数回転数目盛板３１
は筒状部２３の軸と平行な方向にねじ部２４の一部を削
って形成した平坦部２６に基準線３３が軸と平行になる
ように貼り付けられている。端数回転数目盛板３２は、
テープを調節ナット１９の外周１９ａに貼り付けたもの
で、その表面には、筒状部２３の軸方向に平行で円周方
向を等分割した位置に角度目盛３５と角度数字３６が第
３図に示すように交互に印刷してある。The reading mechanism 30 includes an integer rotation speed scale plate 31 and a fractional rotation speed scale plate 32. Integer number of revolutions scale plate 31
Is a reference line 33 extending parallel to the axis, as shown in FIG.
A scale 34 having the same pitch as the pitch of the threaded portion 24 of the tubular portion 23 of the hub 11 is printed on the surface. This integer speed scale 31
Is attached to a flat portion 26 formed by cutting a part of the screw portion 24 in a direction parallel to the axis of the tubular portion 23 so that the reference line 33 is parallel to the axis. The fractional rotation speed scale plate 32 is
The tape is attached to the outer circumference 19a of the adjusting nut 19, and an angle scale 35 and an angle numeral 36 are provided on the surface thereof in positions parallel to the axial direction of the tubular portion 23 and equally divided in the circumferential direction. Alternately printed as shown in.
なお、端数回転数目盛板３２には、３０度毎に角度が印
されているが、分数表示であってもよい。即ち、１回転
を１２等分し、０，1/12,2/12・・・10/12,11/12と表示
してもよい。It should be noted that the fractional rotation number scale plate 32 is marked with an angle every 30 degrees, but it may be displayed as a fraction. That is, one rotation may be divided into 12 equal parts and displayed as 0, 1/12, 2/12 ... 10/12, 11/12.
これらの整数回転数目盛板３１と端数回転数目盛板３２
を貼りつけるときは、皿ばね１７に圧縮力が全く加わっ
ていない状態から調節ナット１９を多少締め込み、皿ば
ね１７を落ち着いた状態にしてから、調節ナット１９の
端面１９ｂに目盛３４の０を合わせて整数回転数目盛板
３１を平坦部２６に貼りつける。その後、整数回転数目
盛板３１の基準線３３に端数回転数目盛板３２の０度を
合わせて端数回転数目盛板３２を貼りつける。これによ
り、調節ナット１９の基準位置が定まる。トリップトル
クを設定するには、先ず、第５図に示すような、横軸に
調節ナット１９の目盛値（回転数）及び回転角を、縦軸
にトリップトルクを表したグラフに基づいて、所望のト
リップトルクに対応した調節ナット１９の回転数及び角
度を求める。次に、グラフから求めた回転数及び角度だ
け読取機構３０に基づいて調節ナット１９をねじ込み皿
ばね１７を圧縮する。最後に、弛み止めビス２５によっ
て調節ナット１９を固定する。読取機構３０の読取り
は、調節ナット１９の端面１９ｂの真下に見えている目
盛３４の最大数値と、基準線３３に対応している角度目
盛３５或いは角度数字３６とから、整数回転数と端数回
転数（角度）を読取ることができる。従って、例えば、
トリップトルクを２kgｍに設定するには、グラフから１
回転と１８０度を読取り、第１図のように調節ナット１
９を１回転と１８０度の位置（１回転半）まで締め込む
ことによって、所望のトリップトルクに設定することが
できる。These integer rotational speed scale plate 31 and fractional rotational speed scale plate 32
When sticking, the adjusting nut 19 is slightly tightened from the state in which no compressive force is applied to the disc spring 17, and the disc spring 17 is settled down. In addition, the integer rotation number scale plate 31 is attached to the flat portion 26. Then, the fractional rotation speed scale plate 32 is attached to the reference line 33 of the integral rotation speed scale plate 31 by adjusting the fractional rotation speed scale plate 32 to 0 degree. As a result, the reference position of the adjusting nut 19 is set. To set the trip torque, first, as shown in FIG. 5, a horizontal axis indicates the scale value (rotation speed) and the rotation angle of the adjusting nut 19, and a vertical axis indicates the trip torque. The rotational speed and the angle of the adjusting nut 19 corresponding to the trip torque are calculated. Next, the adjusting nut 19 is screwed into the disc spring 17 based on the reading mechanism 30 by the number of rotations and the angle obtained from the graph. Finally, the adjusting nut 19 is fixed by the locking screw 25. The reading of the reading mechanism 30 is based on the maximum value of the scale 34 that is visible just below the end surface 19b of the adjusting nut 19 and the angle scale 35 or the angle numeral 36 corresponding to the reference line 33. The number (angle) can be read. So, for example,
To set the trip torque to 2kgm, use 1 from the graph.
Rotate and read 180 degrees, and adjust nut 1 as shown in Fig. 1.
A desired trip torque can be set by tightening 9 up to the position of 180 degrees (1 rotation and a half).
なお、端数回転数目盛板３２は、テープ状にして調節ナ
ット１９の外周１９ａに巻き付けて貼りつけてあるが、
リング状にして調節ナット１９の端面１９ｂに貼りつけ
てもよい。In addition, the fractional rotation speed scale plate 32 is formed into a tape shape and wound around the outer periphery 19a of the adjusting nut 19, and is attached thereto.
It may be formed in a ring shape and attached to the end surface 19b of the adjusting nut 19.
従って、特許請求の範囲における「調節ナットの外側」
の概念は、調節ナットの外周１９ａのみならず、端面１
９ｂも含むものである。Therefore, "outside the adjusting nut" in the claims.
The concept of is not only the outer circumference 19a of the adjustment nut, but the end surface 1
9b is also included.
発明の効果 以上に説明した本発明のトリップトルク設定機構による
と、次の効果を奏する。Effects of the Invention According to the trip torque setting mechanism of the present invention described above, the following effects are obtained.
トリップトルクの設定が容易、且つ、正確である。The trip torque can be set easily and accurately.
各目盛はクラッチと一体になっているので、長期間使
用しても位置が狂うことなく、トリップトルクの設定の
正確さが持続する。Since each scale is integrated with the clutch, the position of the scale does not change even after long-term use, and the accuracy of trip torque setting continues.
トリップトルク設定機構を設けるためにハブを長くな
る必要がないから、クラッチが大型化することがない。Since the hub does not need to be long to provide the trip torque setting mechanism, the clutch does not become large.
第１図は本発明のトリップトルク設定機構を具えたボー
ルクラッチの一部分を断面で示した正面図、第２図は整
数回転数目盛板の平面図、第３図は端数回転数目盛板の
展開図、第４図は調節ナットを第１図よりさらにねじ込
んだ状態での要部斜視図、第５図はトリップトルクと調
節ナットの回転角との関係図である。 １０…ボールクラッチ（オーバーロードクラッチ） １１…ハブ １７…ばね（皿ばね） １９…調節ナット １９ｂ…端面 ２３…筒状部 ２４…ねじ部 ２６…平坦部 ３０…読取機構 ３３…基準線 ３４…整数回転数目盛 ３５，３６…端数回転数目盛FIG. 1 is a front view showing a cross section of a part of a ball clutch equipped with a trip torque setting mechanism of the present invention, FIG. 2 is a plan view of an integer rotational speed scale plate, and FIG. 3 is a development of a fractional rotational speed scale plate. FIGS. 4 and 5 are perspective views of a main part in a state where the adjusting nut is further screwed in from FIG. 1, and FIG. 5 is a relationship diagram between trip torque and a rotation angle of the adjusting nut. 10 ... Ball clutch (overload clutch) 11 ... Hub 17 ... Spring (disc spring) 19 ... Adjusting nut 19b ... End face 23 ... Cylindrical part 24 ... Screw part 26 ... Flat part 30 ... Reading mechanism 33 ... Reference line 34 ... Integer Rotational speed scale 35, 36 ... Fractional rotational speed scale
Claims (1)
をねじ込むことによりばねを圧縮して所定のトリップト
ルクを発生させるようにしたオーバーロードクラッチに
おいて、 前記筒状部のねじ部の一部に平坦部を設け、該平坦部に
軸と平行に延びる基準線と前記ねじ部のねじピッチと合
致する整数回転数目盛を設けるとともに、前記調節ナッ
トの外側に円周方向を等分する端数回転数目盛を設け、 前記調節ナットの端面と整数回転数目盛の関係から整数
回転数を、基準線と端数回転数目盛の関係から端数回転
数をそれぞれ読取るようにしたことを特徴とする、 オーバーロードクラッチのトリップトルク設定機構。1. An overload clutch in which a spring is compressed by screwing an adjusting nut into a threaded portion provided on a tubular portion of a hub to generate a predetermined trip torque. A flat portion is provided on a part of the flat portion, and a reference line extending parallel to the axis and an integer number of revolutions matching the thread pitch of the screw portion are provided on the flat portion, and the circumferential direction is equally divided outside the adjusting nut. A fractional rotation number scale is provided, and an integer number of revolutions is determined from the relationship between the end surface of the adjusting nut and the integer number of revolutions scale, and the number of revolutions is read from the relationship between the reference line and the fractional rotation number scale, respectively. Overload clutch trip torque setting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24652289A JPH061086B2 (en) | 1989-09-25 | 1989-09-25 | Overload clutch trip torque setting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24652289A JPH061086B2 (en) | 1989-09-25 | 1989-09-25 | Overload clutch trip torque setting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03113126A JPH03113126A (en) | 1991-05-14 |
| JPH061086B2 true JPH061086B2 (en) | 1994-01-05 |
Family
ID=17149653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24652289A Expired - Lifetime JPH061086B2 (en) | 1989-09-25 | 1989-09-25 | Overload clutch trip torque setting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH061086B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4300952A1 (en) * | 1993-01-15 | 1994-07-21 | Mayr Christian Gmbh & Co Kg | Overload clutch |
| JP6183959B2 (en) * | 2014-06-05 | 2017-08-23 | テクノダイナミックス株式会社 | Overload interrupt device |
| CN114233773B (en) * | 2021-12-29 | 2023-07-11 | 南京工诺科技有限公司 | Ball type torque limiter and use method thereof |
-
1989
- 1989-09-25 JP JP24652289A patent/JPH061086B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03113126A (en) | 1991-05-14 |
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