JPS6321797Y2 - - Google Patents
Info
- Publication number
- JPS6321797Y2 JPS6321797Y2 JP1984130366U JP13036684U JPS6321797Y2 JP S6321797 Y2 JPS6321797 Y2 JP S6321797Y2 JP 1984130366 U JP1984130366 U JP 1984130366U JP 13036684 U JP13036684 U JP 13036684U JP S6321797 Y2 JPS6321797 Y2 JP S6321797Y2
- Authority
- JP
- Japan
- Prior art keywords
- tension pulley
- pulley
- tension
- belt
- transmission
- 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
- 230000005540 biological transmission Effects 0.000 claims description 48
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
【考案の詳細な説明】
[産業上の利用分野]
本考案は、操作レバーの切換えに伴なうテンシ
ヨンプーリの揺動変位によつてテンシヨンプーリ
を緩緊せしる駆動プーリから従動プーリ側への動
力伝動を断続するベルト伝動機構のテンシヨン構
造に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for moving the tension pulley from the driving pulley to the driven pulley, which loosens and tightens the tension pulley by the swinging displacement of the tension pulley as the operating lever is switched. This invention relates to a tension structure of a belt transmission mechanism that interrupts power transmission to the side.
[従来技術及び考案が解決しようとする問題点]
一般に、この種ベルト伝動機構は、テンシヨン
プーリの揺動変位によつて伝動ベルトの緩緊変化
を行なわしめることで、駆動プーリから従動プー
リ側への動力伝動を断続するようになつている
が、伝動ベルトが弛緩した動力非伝動時におい
て、テンシヨンプーリを伝動ベルトから無造作に
遠く離し、伝動ベルトを自由な弛緩状態にしてし
まうと、駆動プーリは駆動したままであるなどの
理由から、伝動ベルトがプーリから極めて外れや
すく、このため、テンシヨンプーリは、弛緩した
伝動ベルトに対して駆動プーリのスリツプによる
自由回動は許容するが、伝動ベルトがプーリの側
面部を乗越えて外れることができないよう適当位
置に位置規制せしめておく必要がある。そこで従
来、弛緩側に揺動したテンシヨンプーリを、フレ
ームの下面やカバーに固定した専用のストツパに
接当させたりすることでベルト弛緩時の位置規制
していたが、テンシヨンプーリの弛緩側への揺動
は、伝動ベルトの緊張力をそのまま受けることも
あつて激しいものであり、このためフレーム下面
やストツパへのテンシヨンプーリの衝撃音が大き
くて極めて不快であるうえに、衝撃時の反発力に
よつてテンシヨンプーリが緊張側に振れて伝動ベ
ルトが再緊張し、このため伝動遮断が即座に行な
われずに寸動状態となつてしまうなどの欠点があ
り問題となつていた。そこでストツパを弾性体で
構成してテンシヨンプーリの弛緩側への揺動を弾
性的に受止めるようにしたものもあるが、この場
合には構造が複雑かつ大型化してしまい、さらに
限られた大きさの伝動ケース内にコンパクトに収
容することが難しくなる等の欠点があり実用性に
欠けるものであつた。[Problems to be solved by the prior art and the invention] In general, this type of belt transmission mechanism changes the tension and tension of the transmission belt by the swinging displacement of the tension pulley, so that the transmission belt can be moved from the drive pulley to the driven pulley. However, when the transmission belt is relaxed and power is not being transmitted, if the tension pulley is carelessly moved far away from the transmission belt and the transmission belt is freely relaxed, the driving Because the pulley is still being driven, the transmission belt is extremely likely to come off the pulley.For this reason, the tension pulley allows the drive pulley to slip and rotate freely against the loosened transmission belt, but the transmission belt It is necessary to restrict the belt to an appropriate position so that it cannot climb over the side surface of the pulley and come off. Conventionally, the position of the tension pulley when the belt was loosened was regulated by making the tension pulley swing toward the slack side come into contact with a special stopper fixed to the bottom surface of the frame or the cover. The vibrations caused by the tension of the transmission belt are severe, and the impact noise of the tension pulley on the bottom surface of the frame and the stopper is loud and extremely unpleasant, and the The tension pulley swings toward the tension side due to the repulsive force, causing the transmission belt to be re-tensioned, resulting in problems such as the transmission being not cut off immediately and resulting in an inching state. Therefore, there are some devices in which the stopper is made of an elastic body to elastically absorb the swinging of the tension pulley toward the relaxation side, but in this case, the structure becomes complicated and large, and the limited It lacks practicality because it is difficult to accommodate compactly in a transmission case of such a large size.
[問題を解決する手段]
本考案は上記の如き実情に鑑み、ベルト伝動機
構のなかには操作レバーとテンシヨンプーリとの
連結機構に、テンシヨンプーリの弾性的な緩緊揺
動を行なうべく弾機が介装されたものがあること
に着目し、この弾機による弾性力を有効に利用し
てテンシヨンプーリを弾性的に受止めることがで
きるベルト伝動機構のテンシヨン構造を提供する
ことを目的として創案されたものであつて、操作
レバーの切換えに伴なうテンシヨンプーリの揺動
変位で伝動ベルトを緩緊せしめて動力伝動の断続
を行なうようにしたベルト伝動機構において、前
記操作レバーからテンシヨンプーリに至る連結機
構に弾機を介装して、テンシヨンプーリの揺動を
弾性的に行なわしめると共に、上記連結機構を、
テンシヨンプーリの弛緩側揺動となる揺動下手側
で弛緩状態のテンシヨンプーリを下側から受止め
るよう配して、プーリ受止め体になるよう構成し
たことを特徴とするものである。[Means for Solving the Problem] In view of the above-mentioned circumstances, the present invention includes a belt transmission mechanism that includes an elastic mechanism in the coupling mechanism between the operation lever and the tension pulley in order to elastically loosen and tighten the tension swing of the tension pulley. The purpose of this invention is to provide a tension structure for a belt transmission mechanism that can elastically catch a tension pulley by effectively utilizing the elastic force of this bullet. This is a belt transmission mechanism in which the transmission belt is loosened and tightened by the swinging displacement of the tension pulley accompanying switching of the operating lever, and power transmission is interrupted and interrupted. An elastic device is interposed in the connection mechanism leading to the tension pulley to elastically swing the tension pulley, and the connection mechanism is
The device is characterized in that it is arranged to receive the tension pulley in a relaxed state from below on the lower side of the swinging side of the tension pulley, which is when the tension pulley swings to the relaxation side, and is configured to function as a pulley receiving body.
[実施例]
次に、本考案の一実施例を図面に基づいて説明
する。図面において、1は駆動プーリ、2は従動
プーリであつて、両プーリ1,2間にはV型の伝
動ベルト3が懸回されている。また4はテンシヨ
ンプーリであつて、該テンシヨンプーリ4は、支
軸5を支点とした後述する上下揺動変位をするこ
とによつて伝動ベルト3の緊緩変化を行ない、こ
れによつて駆動プーリ1から従動プーリ2側への
動力伝動の断続がなされるようになつており、こ
れらによつてベルト伝動機構が構成されているこ
とはいずれも従来通りである。[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, 1 is a driving pulley, 2 is a driven pulley, and a V-shaped transmission belt 3 is suspended between both pulleys 1 and 2. Reference numeral 4 denotes a tension pulley, which tensions and loosens the transmission belt 3 by vertically swinging the shaft 5 as a fulcrum, which will be described later. The power transmission from the driving pulley 1 to the driven pulley 2 is interrupted and disconnected, and the belt transmission mechanism is configured by these components, as is conventional.
前記支軸5は機体フレーム6に螺着固定された
ステー7に回動自在に軸支されており、該支軸5
には作動腕8と先端部にテンシヨンプーリ4が軸
着せしめられたテンシヨンアーム4aとがそれぞ
れ一体的に固定されている。作動腕8には操作レ
バー9側に一端部が連結された作動ワイヤ10の
他端部がコイル弾機11を介して連結されてお
り、これらによつて本考案の連結機構が構成され
ている。そして操作レバー9を切換操作すること
によつて、テンシヨンプーリ4は、伝動ベルト3
が第3図Aの如くプーリ1,2の溝に緊張状に嵌
入する動力伝動状態と、第3図Bの如くプーリ
1,2の溝に弛緩状に嵌入する動力非作動状態と
に変姿するようになつており、またこのとき、テ
ンシヨンプーリ4は、コイル弾機11による作用
を受けて弾性的な伝動ベルト3への揺動変位を行
ない、ベルト伝動機構におけるスムーズな動力伝
動の断続をするようになつている。さらに本考案
では、前記連結機構の一部である作動ワイヤ10
の他端部側(本実施例ではコイル弾機11との連
結金具部位)は、テンシヨンプーリ4の下方、即
ち伝動ベルト3を弛緩せしめる揺動下手側に位置
するよう配設されており、テンシヨンプーリ4が
伝動ベルト3の弛緩側に揺動した際に、テンシヨ
ンプーリ4に下側から弾性的に接当してこれを受
止めるようなにつている。尚、図中、10aはア
ウタワイヤ、12はアウタ受けである。 The support shaft 5 is rotatably supported by a stay 7 screwed to the fuselage frame 6.
An actuating arm 8 and a tension arm 4a having a tension pulley 4 pivotally attached to the distal end thereof are each integrally fixed. The other end of an actuation wire 10, one end of which is connected to the operating lever 9, is connected to the actuation arm 8 via a coil bullet 11, and these constitute the connection mechanism of the present invention. . By switching the operation lever 9, the tension pulley 4 is moved to the transmission belt 3.
transforms into a power transmission state in which it is tightly fitted into the grooves of pulleys 1 and 2 as shown in Figure 3A, and a power non-operating state in which it is loosely fitted in the grooves in pulleys 1 and 2 as shown in Figure 3B. At this time, the tension pulley 4 receives the action of the coil elastic machine 11 to elastically oscillate the transmission belt 3, thereby smoothly intermittent power transmission in the belt transmission mechanism. I'm starting to do that. Furthermore, in the present invention, an actuation wire 10 that is a part of the connection mechanism
The other end side (in this embodiment, the connecting metal part with the coil bomber 11) is arranged so as to be located below the tension pulley 4, that is, on the lower side of the swing that relaxes the transmission belt 3. When the tension pulley 4 swings toward the relaxed side of the transmission belt 3, the tension pulley 4 is arranged to elastically abut on the tension pulley 4 from below and receive the swing. In the figure, 10a is an outer wire, and 12 is an outer receiver.
叙述の如く構成された本考案の実施例におい
て、駆動プーリ1側から従動プーリ2側への動力
伝動は、操作レバー9の切換操作の連繋してテン
シヨンプーリ4が支軸5を支点として上下揺動
し、伝動ベルト3を緊緩せしめることによつて断
続せしめられるものであるが、本考案において
は、操作レバー9を動力伝動を断つべく切換操作
して、テンシヨンプーリ4を支軸5を支点として
弛緩側に揺動せしめた際、該揺動したテンシヨン
プーリ4は、コイル弾機11に連結された作動ワ
イヤ10によつて下側から弾性的に受止められ、
これによつて揺動エネルギーが吸収せしめられる
こととなる。従つて弛緩側への揺動時においてテ
ンシヨンプーリ4が勢いよく揺動したとしても、
従来ストツパ等に激しく衝接したことによつて発
生していた大きな衝撃音の発生が全くないうえ
に、伝動ベルト3を緊張せしめてしまうような反
発力の発生も殆んどなく、静粛でしかも円滑に動
力伝動を断つことができる。しかもテンシヨンプ
ーリ4を弾性的に受止める部材は、従来の如く別
途格別に設けた専用の弾性ストツパではなく、テ
ンシヨンプーリ4の伝動ベルト3への離接揺動を
弾性的に行なわしめるために設けたコイル弾機1
1の弾性力をそのまま有効利用して受止めるよう
にし、プーリ受止体を構成しているので、従来の
如く弾性ストツパのための特別な設置スペースは
全く不要となり、もつてベルト伝動機構の軽量コ
ンパクト化に著しく寄与することができる。 In the embodiment of the present invention configured as described above, the power is transmitted from the drive pulley 1 side to the driven pulley 2 side in conjunction with the switching operation of the operating lever 9, so that the tension pulley 4 moves up and down with the support shaft 5 as the fulcrum. It swings and can be disconnected by tightening or loosening the power transmission belt 3. However, in the present invention, the operating lever 9 is switched to disconnect the power transmission, and the tension pulley 4 is connected to the support shaft 5. When the tension pulley 4 is swung toward the relaxed side using the fulcrum as a fulcrum, the swung tension pulley 4 is elastically received from below by the actuating wire 10 connected to the coil elastic machine 11.
This allows the rocking energy to be absorbed. Therefore, even if the tension pulley 4 swings vigorously when swinging toward the relaxation side,
There is no generation of the large impact noise that conventionally occurs due to violent collision with stoppers, etc., and there is almost no repulsive force that would tension the transmission belt 3, making it quiet and quiet. Power transmission can be cut off smoothly. Furthermore, the member that elastically receives the tension pulley 4 is not a dedicated elastic stopper that is separately provided as in the past, but is used to elastically swing the tension pulley 4 toward and away from the transmission belt 3. Coil bullet machine 1 installed in
Since the pulley receiving body is structured so that the elastic force of 1 is effectively used and received as it is, there is no need for any special installation space for the elastic stopper as in the past, and this reduces the weight of the belt transmission mechanism. It can significantly contribute to compactness.
ここでコイル弾機11を利用するテンシヨンプ
ーリ4の弾性的な受止めには、本考案の如くテン
シヨンプーリ4を揺動下手側から受止めることな
くテンシヨンプーリ4をコイル弾機11の付勢力
によつて中ぶらり状にして直接受止めることが考
えられるが、この場合には、長期の使用によつて
作動ワイヤ10やコイル弾機11が延びてしまつ
た様な場合に、テンシヨンプーリ4は延びた分に
相当する分だけそのまま下降してしまい、この結
果ベルトが外れやすくなつてしまう。しかるに本
考案ではテンシヨンプーリ4は揺動下手側から弾
性的に受止めることとしているので、例えば作動
ワイヤ10が延びた場合には作動ワイヤ10はテ
ンシヨンプーリ4との接当部で屈折して延びを吸
収することとなり、従つて仮令作動ワイヤ10が
延びたとしてもテンシヨンプーリ4の位置変化は
その延びた分にそのまま応じて変化することはな
く、従つてこの場合であつても伝動ベルト3が外
れてしまうことを効果的に防止することができる
ものである。 Here, in order to elastically catch the tension pulley 4 using the coil bomber 11, the tension pulley 4 is not received from the swinging lower side as in the present invention. It is conceivable to make it dangling and receive it directly by the biasing force, but in this case, if the actuating wire 10 or the coil bomb 11 has been stretched due to long-term use, the tension The pulley 4 continues to descend by an amount corresponding to the length of the extension, and as a result, the belt is likely to come off. However, in the present invention, since the tension pulley 4 is elastically received from the lower side of the swing, for example, when the actuation wire 10 is extended, the actuation wire 10 is bent at the contact part with the tension pulley 4. Therefore, even if the temporary operating wire 10 is extended, the position of the tension pulley 4 will not change in proportion to the extension, and even in this case, the transmission This can effectively prevent the belt 3 from coming off.
尚、本考案は上記実施例のものに限定されるも
のでないことは勿論であつて、要は、テンシヨン
プーリを、下動せしめた場合に、操作レバーとテ
ンシヨンプーリとを弾機によつて弾性的に連結す
る連結機構によつて下側から受止めるようにして
あればよく、そのため例えば前記実施例におい
て、作動ワイヤ10でテンシヨンプーリ4を受止
めることなく、コイル弾機11自身、テンシヨン
アーム4a、作動腕8等によつて受止めるように
してもよいものである。 It should be noted that the present invention is of course not limited to the above-mentioned embodiments, and the point is that when the tension pulley is moved downward, the operating lever and the tension pulley are moved by a bullet. Therefore, in the above embodiment, for example, the coil elastic machine 11 itself does not need to receive the tension pulley 4 with the operating wire 10. It may be received by the tension arm 4a, the operating arm 8, etc.
[作用効果]
以上要するに、本考案は叙述の如く構成したも
のであるから、テンシヨンプーリは、弛緩側であ
る下側に揺動変位した際には、弾機を有する連結
器工がプーリ受止め体となつて下側から弾性的に
受止められることとなり、従つて従来の固定式の
ストツパを用いたものの如く不快な衝撃音の発生
や迅速で円滑な動力遮断が阻害されるようなこと
が全くなく、静粛でスムーズなテンシヨンプーリ
の弛緩側への揺動を行なうことができる。しかも
このテンシヨンプーリの弾性的な受止体は、専用
の弾性ストツパを用いることなく、操作レバーと
テンシヨンプーリとを連結するに必要な弾機付き
の連結機構をそのまま有効利用して構成されてい
るため専用の設置スペースを何ら確保する必要も
なく、従つてベルト伝動機構全体の軽量コンパク
ト化に寄与することもできる。さらにテンシヨン
プーリは、揺動下手側から受止められることとな
るので、仮令連結機構が長期の使用によつて延び
たとしても、テンシヨンプーリの変位量は殆んど
影響のない僅かなものとなり、もつて本考案は、
連結機構によつて常に最良の状態でテンシヨンプ
ーリを弾性的に受止めることができるものであ
る。[Operations and Effects] In summary, the present invention is constructed as described above, so that when the tension pulley is swung downward, which is the relaxed side, the coupling device having the elastic mechanism can move the pulley holder. It acts as a stopper and is received elastically from the bottom, which results in the generation of unpleasant impact noise and the impediment to quick and smooth power cutoff, unlike when using a conventional fixed stopper. There is no friction at all, and the tension pulley can swing quietly and smoothly toward the relaxed side. Moreover, the elastic receiving body of this tension pulley is constructed by effectively utilizing the connecting mechanism with a spring necessary to connect the operating lever and the tension pulley without using a dedicated elastic stopper. Therefore, there is no need to secure any dedicated installation space, and it can therefore contribute to making the entire belt transmission mechanism lighter and more compact. Furthermore, since the tension pulley is received from the lower side of the swing, even if the temporary connection mechanism is extended due to long-term use, the amount of displacement of the tension pulley will be small and will have almost no effect. Therefore, the present invention is
The connection mechanism allows the tension pulley to be elastically received at all times in the best condition.
図面は本考案に係るベルト伝動機構のテンシヨ
ン構造の一実施例を示したものであつて、第1図
は動力伝動状態を示す要部正面図、第2図は動力
非伝動状態を示す要部正面図、第3図X,Yはそ
れぞれ伝動ベルトの緊張状態と弛緩状態とを示す
作用説明図である。
図中、3は伝動ベルト、4はテンシヨンプー
リ、9は操作レバー、11はコイル弾機である。
The drawings show an embodiment of the tension structure of the belt transmission mechanism according to the present invention, in which FIG. 1 is a front view of the main part showing the power transmission state, and FIG. 2 is the main part showing the power non-transmission state. The front view and FIGS. 3X and 3Y are explanatory views showing the tensioned state and relaxed state of the transmission belt, respectively. In the figure, 3 is a transmission belt, 4 is a tension pulley, 9 is an operating lever, and 11 is a coil bullet.
Claims (1)
の揺動変位で伝動ベルトを緩緊せしめて動力伝動
の断続を行なうようにしたベルト伝動機構におい
て、前記操作レバーからテンシヨンプーリに至る
連結機構に弾機を介装して、テンシヨンプーリの
揺動を弾性的に行なわしめると共に、上記連結機
構を、テンシヨンプーリの弛緩側揺動となる揺動
下手側で弛緩状態のテンシヨンプーリを下側から
受止めるよう配して、プーリ受止め体になるよう
構成したことを特徴とするベルト伝動機構のテン
シヨン構造。 In a belt transmission mechanism in which power transmission is interrupted or interrupted by loosening or tightening a transmission belt by the swinging displacement of a tension pulley accompanying switching of an operating lever, elasticity is applied to the coupling mechanism from the operating lever to the tension pulley. The mechanism is used to elastically swing the tension pulley, and the connection mechanism is connected to the lower side of the tension pulley, which swings the tension pulley to the relaxed side. What is claimed is: 1. A tension structure for a belt transmission mechanism, characterized in that the tension structure is arranged so as to be received from the ground, and configured to function as a pulley receiving body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13036684U JPS6145651U (en) | 1984-08-28 | 1984-08-28 | Tension structure of belt transmission mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13036684U JPS6145651U (en) | 1984-08-28 | 1984-08-28 | Tension structure of belt transmission mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6145651U JPS6145651U (en) | 1986-03-26 |
JPS6321797Y2 true JPS6321797Y2 (en) | 1988-06-15 |
Family
ID=30688978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13036684U Granted JPS6145651U (en) | 1984-08-28 | 1984-08-28 | Tension structure of belt transmission mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6145651U (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6123706Y2 (en) * | 1981-05-09 | 1986-07-16 |
-
1984
- 1984-08-28 JP JP13036684U patent/JPS6145651U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6145651U (en) | 1986-03-26 |
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