JPH0631233Y2 - Toothed belt connection mechanism - Google Patents
Toothed belt connection mechanismInfo
- Publication number
- JPH0631233Y2 JPH0631233Y2 JP14174288U JP14174288U JPH0631233Y2 JP H0631233 Y2 JPH0631233 Y2 JP H0631233Y2 JP 14174288 U JP14174288 U JP 14174288U JP 14174288 U JP14174288 U JP 14174288U JP H0631233 Y2 JPH0631233 Y2 JP H0631233Y2
- Authority
- JP
- Japan
- Prior art keywords
- toothed
- belt
- toothed belt
- pulleys
- pulley
- 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
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
- Pulleys (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、歯付きベルトの両端部を接続して無端状とす
るための歯付きベルト接続機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a toothed belt connecting mechanism for connecting both ends of a toothed belt to form an endless belt.
例えば、自動ドアの駆動装置に使用されている無端状の
歯付きベルトのような長尺の無端状歯付きベルトを製作
するにあたっては、歯付きベルトの両端部を接続して無
端状にすることが多い。For example, when manufacturing a long endless toothed belt, such as the endless toothed belt used in automatic door drives, connect both ends of the toothed belt to form an endless belt. There are many.
このような場合、従来では、第4図に示すように、歯付
きベルトaの両端部を、該ベルトaの歯に噛み合う歯部
を有する凹凸状のプレートbと平坦なプレートcとで挟
持し、これらa,b,cを貫通するボルトd…とこれに
螺合するナットe…で締付け固定することにより、歯付
きベルトaの両端部を接続し、無端状としていた。In such a case, conventionally, as shown in FIG. 4, both end portions of a toothed belt a are sandwiched between an uneven plate b having a tooth portion meshing with the teeth of the belt a and a flat plate c. The end portions of the toothed belt a are connected to each other by tightening and fixing the bolts d penetrating these a, b and c and the nuts e screwed to the bolts d.
上記の従来例には、次のような問題点があった。 The above-mentioned conventional example has the following problems.
即ち、無端状歯付きベルトを掛け渡すプーリの軸間距離
が一定である場合、歯付きベルトaの両端部を接続して
無端状とするにあたっては、ベルトaにある程度の張力
を付与した状態で端部同士を接続することになるが、上
記の接続方向では、歯付きベルトaを一定の力で引っ張
りながら接続することが非常に困難であり、しかも、歯
のピッチずつ引っ張ることになるので、張力の付与が段
階的となり、張力の微調整ができなかった。That is, when the axial distance between the pulleys around which the endless toothed belt is stretched is constant, when connecting both ends of the toothed belt a to form an endless belt, a certain amount of tension is applied to the belt a. Although the end portions will be connected to each other, in the above connecting direction, it is very difficult to connect the toothed belt a while pulling it with a constant force, and moreover, since the tooth pitch is pulled by each pitch, The tension was applied in stages, and the fine adjustment of the tension could not be performed.
上記の従来欠点に鑑み、本考案は、簡単な操作によっ
て、ベルトに所望の張力を付与した状態に接続できる歯
付きベルト接続機構を提供しようとするものである。In view of the above-mentioned conventional drawbacks, the present invention aims to provide a toothed belt connecting mechanism that can be connected to a belt in a state in which a desired tension is applied by a simple operation.
上記の目的を達成するために、本考案が講じた技術的手
段は、次の通りである。即ち、本考案による歯付きベル
ト接続機構は、時計方向にのみ回転自在な歯付きプーリ
と反時計方向にのみ回転自在な歯付きプーリとを、一つ
の可動部材上に、これら両歯付きプーリの外周歯部間に
所定の間隔が形成される状態に軸支し、複数のプーリ間
にわたって掛け渡した歯付きベルトの両端部を背中合わ
せにした状態で、前記両歯付きプーリ間に挿入して、該
ベルトの歯を前記両歯付きプーリの外周歯部に噛み合わ
せてあることを特徴としている。The technical means taken by the present invention to achieve the above object are as follows. That is, in the toothed belt connecting mechanism according to the present invention, a toothed pulley that is rotatable only in the clockwise direction and a toothed pulley that is rotatable only in the counterclockwise direction are provided on one movable member. Axially supported in a state in which a predetermined interval is formed between the outer peripheral tooth portions, with both ends of the toothed belt spanning between a plurality of pulleys being back to back, inserted between the both toothed pulleys, The teeth of the belt are meshed with the outer peripheral teeth of the pulley with both teeth.
上記の構成によれば、歯付きベルトの両端部を背中合わ
せにした状態で、歯付きプーリ間に当該歯付きプーリの
回転可能な方向から挿入し、その先端をばね秤を介して
引っ張る等して、ベルトに所定の張力を付与し、この状
態で、引っ張るのを止めると、両側の歯付きプーリは逆
方向への回転ができないので、歯付きベルトの両端部は
その位置で固定され、互いに連結されて無端状となり、
且つ、所定の緊張状態が保たれることになる。According to the above configuration, in a state where both ends of the toothed belt are back-to-back, the toothed belt is inserted between the toothed pulleys in a rotatable direction, and the tip of the toothed belt is pulled through a spring balance. , If a predetermined tension is applied to the belt and the pulling is stopped in this state, the toothed pulleys on both sides cannot rotate in the opposite direction, so both ends of the toothed belt are fixed in that position and connected to each other. And become endless,
Moreover, a predetermined tension is maintained.
また歯付きベルトに伸びが生じた場合、両歯付きプーリ
間に挿入されたベルト端部を引っ張るだけで、ベルトの
張力を調整することが可能である。Further, when the toothed belt is stretched, the tension of the belt can be adjusted only by pulling the end portion of the belt inserted between the toothed pulleys.
以下、本考案の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第3図は本考案に係る歯付きベルト接続機構Aが適用さ
れた自動ドアの駆動装置を示す。図中の1はドア、2は
無端状にされた歯付きベルトであり、駆動側のプーリ3
と従動側のプーリ4とにわたって掛け渡されている。5
は駆動側のプーリ3を正逆転駆動するモータである。6
は歯付きベルト接続機構Aの一部を構成する可動部材で
あり、該可動部材6に前記ドア1を連結してある。FIG. 3 shows an automatic door driving device to which the toothed belt connecting mechanism A according to the present invention is applied. In the figure, 1 is a door, 2 is an endless toothed belt, and a drive side pulley 3
And the pulley 4 on the driven side. 5
Is a motor for driving the driving pulley 3 in the forward and reverse directions. 6
Is a movable member forming a part of the toothed belt connecting mechanism A, and the door 1 is connected to the movable member 6.
前記歯付きベルトの接続機構Aは、第1図、第2図に示
すように、時計方向にのみ回転自在な歯付きプーリ7と
反時計方向にのみ回転自在な歯付きプーリ8とを、前記
可動部材6上に、これら両歯付きプーリ7,8の外周歯
部7a,8a間に所定の間隙が形成された状態に軸支し、前
記駆動側及び従動側のプーリプーリ3,4間にわたって
掛け渡した歯付きベルト2の両端部を背中合わせにした
状態で、前記両歯付きプーリ7,8間に挿入して、当該
ベルト2の歯2a…を前記両歯付きプーリ7,8の外周歯
部7a…,8a…に噛み合わせるように構成したものであ
る。前記歯付きプーリ7,8の外周歯部7a,8a間の間隙
は、背中合わせにして挿入された歯付きベルト2の背面
同士が密着するか、たとえベルト背面間に隙間ができて
も、その隙間が当該歯付きベルト2の歯高よりも狭くな
るような寸法に設定される。As shown in FIGS. 1 and 2, the toothed belt connection mechanism A includes a toothed pulley 7 that is rotatable only in a clockwise direction and a toothed pulley 8 that is rotatable only in a counterclockwise direction. The movable member 6 is axially supported in a state in which a predetermined gap is formed between the outer peripheral tooth portions 7a, 8a of the pulleys 7, 8 with both teeth, and is hung across the pulley pulleys 3, 4 on the driving side and the driven side. With both ends of the passed toothed belt 2 back-to-back, the toothed belt 2 is inserted between the toothed pulleys 7 and 8 so that the teeth 2a of the belt 2 are outer toothed portions of the toothed pulleys 7 and 8. It is configured to engage with 7a ..., 8a. The gap between the outer peripheral tooth portions 7a, 8a of the toothed pulleys 7, 8 is such that the back faces of the toothed belts 2 inserted back to back are in close contact with each other, or even if there is a gap between the back faces of the belts. Is set to be smaller than the tooth height of the toothed belt 2.
尚、この実施例では、歯付きプーリ7,8を矢印で示す
方向(時計方向又は反時計方向)にのみ回転自在に構成
する手段として、第1図に示すような、鋼球9…とこれ
を平滑な外輪内面と内輪の傾斜面との間に押圧するスプ
リング10…とを備えた無段階式の一方向クラッチを用い
ているが、鋼球9…の代わりにラチェット爪を用いたラ
チェット式の一方向クラッチであってもよい。この場
合、ラチェット爪が係合する外輪内面のギヤのピッチを
可及的に小さくして、一ピッチあたりの歯付きプーリ
7,8の回転によるベルト移動量を歯付きベルト2の歯
2a…のピッチよりも小さくすることにより、ベルト張力
の微調整が可能である。In this embodiment, as means for structuring the toothed pulleys 7, 8 rotatably only in the directions (clockwise or counterclockwise) indicated by arrows, steel balls 9 ... Although a stepless one-way clutch equipped with a spring 10 that presses between the inner surface of the smooth outer ring and the inclined surface of the inner ring is used, a ratchet type that uses ratchet pawls instead of the steel balls 9 ... It may be a one-way clutch. In this case, the pitch of the gear on the inner surface of the outer ring with which the ratchet pawl is engaged is made as small as possible, and the belt movement amount due to the rotation of the toothed pulleys 7 and 8 per pitch is determined by the teeth of the toothed belt 2.
By making the pitch smaller than the pitch of 2a ..., the belt tension can be finely adjusted.
また上記の実施例では、自動ドアの駆動装置を例にとっ
て本考案を説明したが、プリンターの印字ヘッド駆動装
置、工業用ミシン、ロボット台車の走行駆動装置等々、
無端状の歯付きベルトを使用して可動部を往復移動させ
るものであれば、本考案の歯付きベルト接続機構Aを適
用することが可能である。Further, in the above embodiment, the present invention has been described by taking the drive device of the automatic door as an example, but the print head drive device of the printer, the industrial sewing machine, the traveling drive device of the robot carriage, etc.
The toothed belt connecting mechanism A of the present invention can be applied as long as the endless toothed belt is used to reciprocate the movable portion.
本考案は、上述した構成よりなるから、歯付きベルトの
両端部を背中合わせにした状態で、歯付きプーリ間に当
該歯付きプーリの回転可能な方向から挿入してベルト先
端を引っ張るだけの簡単な操作によって、歯付きベルト
の両端部を接続して無端状とすることができ、さらに
は、歯付きプーリ間に挿入されたベルト先端部をばね秤
を介して引っ張ることにより、べルトに正確な張力を付
与することができる。殊に、歯付きプーリを所定方向に
のみ回転自在に構成する手段として、実施例のような無
段階式の一方向クラッチやギヤピッチの小さいラチェッ
ト式の一方向クラッチを用いることにより、張力の微調
整が可能である。Since the present invention has the above-mentioned configuration, it is easy to insert the toothed belt between the toothed pulleys from the rotatable direction of the toothed pulley in a state in which both ends of the toothed belt are back to back and pull the belt tip. By operation, both ends of the toothed belt can be connected to make it endless, and furthermore, by pulling the belt tip inserted between the toothed pulleys via a spring scale, it is possible to accurately measure the belt. Tension can be applied. In particular, by using a stepless one-way clutch such as the embodiment or a ratchet type one-way clutch with a small gear pitch as a means for configuring the toothed pulley to rotate only in a predetermined direction, fine adjustment of tension is possible. Is possible.
また歯付きベルトに伸びが生じた場合、歯付きプーリ間
に挿入されたベルト先端部を引っ張るだけで張力の調整
を行うことができる。Further, when the toothed belt is stretched, the tension can be adjusted only by pulling the tip portion of the belt inserted between the toothed pulleys.
図面は本考案の一実施例を示し、第1図は本考案に係る
歯付きベルトの接続機構の要部拡大断面図、第2図は歯
付きベルトの接続機構の概略平面図、第3図は歯付きベ
ルトの接続機構が適用された自動ドアの駆動装置の要部
斜視図である。 第4図は従来例の説明図である。 A…歯付きベルト接続機構、2…歯付きベルト、2a…
歯、3,4…プーリ、6…可動部材、7,8…歯付きプ
ーリ、7a,8a…外周歯部。1 shows an embodiment of the present invention, FIG. 1 is an enlarged cross-sectional view of a main part of a toothed belt connecting mechanism according to the present invention, FIG. 2 is a schematic plan view of a toothed belt connecting mechanism, and FIG. FIG. 3 is a perspective view of a main part of an automatic door driving device to which a toothed belt connecting mechanism is applied. FIG. 4 is an explanatory diagram of a conventional example. A ... Toothed belt connection mechanism, 2 ... Toothed belt, 2a ...
Tooth, 3, 4 ... Pulley, 6 ... Movable member, 7, 8 ... Toothed pulley, 7a, 8a ... Outer peripheral tooth portion.
Claims (1)
反時計方向にのみ回転自在な歯付きプーリとを、一つの
可動部材上に、これら両歯付きプーリの外周歯部間に所
定の間隔が形成される状態に軸支し、複数のプーリ間に
わたって掛け渡した歯付きベルトの両端部を背中合わせ
にした状態で、前記両歯付きプーリ間に挿入して、該ベ
ルトの歯を前記両歯付きプーリの外周歯部に噛み合わせ
てあることを特徴とする歯付きベルト接続機構。1. A toothed pulley rotatable only in a clockwise direction and a toothed pulley rotatable only in a counterclockwise direction are provided on one movable member at predetermined intervals between outer peripheral tooth portions of these toothed pulleys. The toothed belt is pivotally supported in a state in which a gap is formed, and both ends of the toothed belt spanning a plurality of pulleys are back-to-back, and the toothed belt is inserted between the toothed pulleys so that the teeth of the belt are A toothed belt connecting mechanism characterized in that it is meshed with the outer peripheral tooth portion of a toothed pulley.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14174288U JPH0631233Y2 (en) | 1988-10-29 | 1988-10-29 | Toothed belt connection mechanism |
US07/418,634 US4993995A (en) | 1988-10-29 | 1989-10-10 | Toothed-belt fixing mechanism |
DE8989119928T DE68900643D1 (en) | 1988-10-29 | 1989-10-26 | CONNECTING DEVICE FOR TIMING BELTS. |
EP89119928A EP0367118B1 (en) | 1988-10-29 | 1989-10-26 | Toothed-belt fixing mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14174288U JPH0631233Y2 (en) | 1988-10-29 | 1988-10-29 | Toothed belt connection mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0262139U JPH0262139U (en) | 1990-05-09 |
JPH0631233Y2 true JPH0631233Y2 (en) | 1994-08-22 |
Family
ID=31407079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14174288U Expired - Lifetime JPH0631233Y2 (en) | 1988-10-29 | 1988-10-29 | Toothed belt connection mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0631233Y2 (en) |
-
1988
- 1988-10-29 JP JP14174288U patent/JPH0631233Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0262139U (en) | 1990-05-09 |
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