JPS6132186Y2 - - Google Patents
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- Publication number
- JPS6132186Y2 JPS6132186Y2 JP13497783U JP13497783U JPS6132186Y2 JP S6132186 Y2 JPS6132186 Y2 JP S6132186Y2 JP 13497783 U JP13497783 U JP 13497783U JP 13497783 U JP13497783 U JP 13497783U JP S6132186 Y2 JPS6132186 Y2 JP S6132186Y2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- pulley
- tooth
- region
- toothed belt
- 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 description 5
- 230000000694 effects Effects 0.000 description 2
- 101100537937 Caenorhabditis elegans arc-1 gene Proteins 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Landscapes
- Pulleys (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
【考案の詳細な説明】
本考案は歯付ベルトとプーリとの組合せからな
る歯付ベルトの駆動装置に係り、更に詳しくはプ
ーリ溝部が全体に円弧あるいは楕円等の曲線から
形成されるプーリに対し、これに適応し得る所要
のベルト歯がプーリ溝部と３点で接触する如き形
状を有する歯付ベルトを組合せベルトの逆運転時
に生じるベルト歯頂部とプーリ溝底部とのこすれ
合いによるベルト歯頂部の摩耗を防止した上記駆
動装置に関するものである。[Detailed description of the invention] The present invention relates to a toothed belt drive device consisting of a combination of a toothed belt and a pulley. , by combining a toothed belt with a shape such that the required belt teeth contact the pulley groove at three points to accommodate this, wear of the belt tooth top due to the friction between the belt tooth top and the pulley groove bottom that occurs when the belt is operated in reverse. The present invention relates to the above-mentioned drive device that prevents.
歯付ベルトは、平ベルトやＶベルトと異なり、
すべりのない確実伝動が可能であり、又、歯車や
チエーンの確実伝動に比べて給油を必要としない
等の利点を有しているため、近年、その需要が急
激に増大してきた。 Toothed belts are different from flat belts and V-belts,
In recent years, demand has increased rapidly because it allows for reliable transmission without slipping, and has the advantage of not requiring lubrication compared to reliable transmission using gears or chains.
今日、一般に使用されている歯付ベルトとプー
リの組合せ体からなる駆動装置としては、RMA
Rubber Manufactures Association）IP−24
（1978年）に定められているように、断面台形の
ベルト歯部とその歯部と相似形のプーリとの噛み
合いによる伝動システムがある。ところがこの種
のベルトはプーリと噛み合う場合、歪がベルト歯
部の歯元に集中し、ベルト歯部の歯先はプーリと
完全に係合した時でも歪むことがなく、ベルト歯
部は大部分不必要で本質的に殆んど荷重を受けて
いない。また、荷重はベルト歯部から抗張体へ不
均等に伝達され、かつベルト歯部の歯先がプーリ
歯側面と係合中に干渉が起る欠点が見られた。 RMA is a drive device consisting of a combination of a toothed belt and a pulley that is commonly used today.
Rubber Manufacturers Association) IP−24
(1978), there is a transmission system that uses belt teeth with a trapezoidal cross section and meshing pulleys with similar shapes. However, when this type of belt meshes with a pulley, the strain is concentrated at the base of the belt teeth, and the tips of the belt teeth do not become distorted even when fully engaged with the pulley, and most of the belt teeth are It is unnecessary and carries essentially no load. In addition, the load was unevenly transmitted from the belt teeth to the tensile member, and there was also the problem that interference occurred when the tips of the belt teeth engaged with the side surfaces of the pulley teeth.
かくして台形状のベルト歯部はこのような歪み
集中、荷重のベルト歯部から抗張体への不均等な
伝達及び歯の干渉を生じるため、改善が望まれて
いた。 Thus, the trapezoidal belt teeth cause such strain concentration, uneven transmission of load from the belt teeth to the tensile member, and tooth interference, so improvements have been desired.
そこで、これに対応し叙上の点を改善した装置
としてベルト歯部が互いに交差すると共にそれぞ
れ等しい半径を有する２つの円弧からなり、所定
荷重下で1/2次の等色しまの輪郭とほぼ等しい輪
郭をもつ歯付ベルトと、このベルト歯部とコンジ
ユゲートである円弧状の溝を有するプーリとを組
合せたものが提供された。（米国特許第3756091号
明細書参照）
しかしながら、この装置の大きな欠点の１つは
ベルト歯部の歯元とプーリとのバツクラツシユが
大きく設計されているところから、ベルトの駆動
開始時、ベルトあるいはプーリの移動代が大きく
なつてベルト溝部表面はプーリにこすられて摩耗
しやすくなり、かつ、このため、抗張体は痛めら
れ、ベルト寿命が短かくなることである。この現
象は歯付ベルトを小プーリに掛張した場合とか、
逆運転した場合には特に顕著であるが、ベルト溝
部表面がプーリ歯先に接するように設計したこと
もその原因の１つである。 Therefore, as a device that improves the points mentioned above, the belt teeth are made up of two circular arcs that intersect with each other and each have the same radius, and under a predetermined load, the belt teeth almost match the outline of a 1/2-order isochromatic stripe. A combination of a toothed belt with an equal profile and a pulley with an arcuate groove conduiting the teeth of the belt has been provided. (Refer to US Pat. No. 3,756,091) However, one of the major drawbacks of this device is that the backlash between the root of the belt teeth and the pulley is designed to be large, so when the belt starts driving, the belt or pulley As the travel distance increases, the surface of the belt groove portion is easily rubbed by the pulleys and abraded, and as a result, the tensile member is damaged and the life of the belt is shortened. This phenomenon occurs when a toothed belt is hung on a small pulley,
This is particularly noticeable when the belt is operated in reverse, and one of the reasons for this is that the belt groove surface is designed to be in contact with the pulley tooth tips.
一方、前記のものに対応するものとして第１図
に示されるようにベルト歯部１の高さをプーリの
溝部２の深さより大きくして、極く限られたベル
ト歯頂部３をプーリの溝底部４で支持することに
より、ベルト溝部表面５がプーリの歯部表面６に
こすられるのを防止すると共に、ベルト溝部表面
５とプーリ歯部表面６とのたたき音を防止した駆
動装置が提案されているが（例えば米国特許第
4233852号明細書参照）、この装置によるとベルト
歯部１とプーリ溝部２間のバツクラツシユが大き
くなると走行時の負荷変動あるいは逆回転によつ
てベルト歯頂部３が微動してプーリの溝底部４と
こすれ合つて摩耗しやすい大きな欠点があつた。 On the other hand, as shown in FIG. 1, the height of the belt tooth portion 1 is made larger than the depth of the groove portion 2 of the pulley as shown in FIG. A driving device has been proposed which prevents the belt groove surface 5 from being rubbed against the pulley tooth surface 6 by supporting the belt at the bottom 4, and also prevents the knocking sound between the belt groove surface 5 and the pulley tooth surface 6. (e.g. U.S. Patent No.
4233852), according to this device, when the backlash between the belt teeth 1 and the pulley groove 2 increases, the belt tooth top 3 moves slightly due to load fluctuations during running or reverse rotation, causing the pulley groove bottom 4 to move. A major drawback was that they rubbed against each other and were prone to wear.
本考案は叙上のような欠点を改善し、主として
ベルト走行時の負荷変動あるいは正逆運転によつ
て生じるベルト歯頂部の摩耗を防止した駆動装置
を提供することを目的とするものである。 The object of the present invention is to improve the above-mentioned drawbacks and to provide a drive device that prevents wear on the belt tooth tops caused mainly by load fluctuations during belt running or forward/reverse operation.
即ち、本考案の特徴とするところは、ベルト長
手方向に一定ピツチで歯部と溝部を交互に有し、
かつ、ベルト歯部のフランク面であるベルト溝部
表面からベルト歯部高さの60〜98％の第１領域を
曲面とし、ベルト歯頂部に至る残りの第２領域を
３つの凸部をもつた屈曲面としたベルト歯部をも
つ歯付ベルトと、これに噛み合うプーリから構成
され、上記歯付ベルトとプーリとの噛み合い完了
時において、ベルト歯部の第２領域に設けた３つ
の凸部がプーリ溝部と接触してなる歯付ベルトの
駆動装置にある。 That is, the feature of the present invention is that the belt has teeth and grooves alternately at a constant pitch in the longitudinal direction of the belt,
In addition, the first region from 60 to 98% of the belt tooth height from the belt groove surface, which is the flank surface of the belt tooth portion, is a curved surface, and the remaining second region up to the belt tooth top portion has three convex portions. It is composed of a toothed belt having belt teeth with a bent surface and a pulley that meshes with the toothed belt, and when the meshing of the toothed belt and the pulley is completed, the three convex portions provided in the second region of the belt tooth It is in a drive device for a toothed belt that is in contact with a pulley groove.
以下、更に本考案の具体的特徴を添付図面に示
す実施例を参照しつつ説明する。 Hereinafter, specific features of the present invention will be further explained with reference to embodiments shown in the accompanying drawings.
第２図は本考案の歯付ベルト駆動装置に使用す
る歯付ベルトの１例であり、該ベルト７はベルト
長手方向に対して一定ピツチで設けた歯部８、溝
部９、そしてピツチライン１０を有しており、ベ
ルト歯部８はプーリの歯部と実質的に係合して動
力伝達を担つている第１領域１１と、ベルト歯部
８をプーリ溝部を支持する第２領域１２から構成
されているが、上記第１領域１１は実質的にベル
ト溝部表面１３からベルト歯部高さHbの60〜98
％に相当し、第２領域１２はその末端よりベルト
歯頂部１４に至る残りの領域に相当する。 FIG. 2 shows an example of a toothed belt used in the toothed belt drive device of the present invention. The belt teeth 8 is composed of a first region 11 that substantially engages with the teeth of the pulley and is responsible for power transmission, and a second region 12 that supports the belt teeth 8 with the pulley groove. However, the first region 11 is substantially at the belt tooth height Hb from the belt groove surface 13 to 60 to 98
%, and the second region 12 corresponds to the remaining region from the end to the belt tooth crest 14.
そして、上記第１領域１１のベルト歯部形状
は、互いに交差するそれぞれ等しい半径R1をも
つ２つの円弧１５，１５で形成され、一方、第２
領域１２にあつては、ベルト歯頂部１４とその両
サイドに３つの円弧状の凸部１６，１６′，１
６″をもつた波状屈曲面となつている。 The belt tooth shape of the first region 11 is formed by two circular arcs 15, 15 having the same radius R1 , which intersect with each other, while the second region
In the area 12, the belt tooth top portion 14 and three arcuate convex portions 16, 16', 1 on both sides thereof are provided.
It has a wavy curved surface with a diameter of 6".
この場合、後者の３つの円弧状の凸部において
は、ベルト歯頂部１４の凸部１６の突起の大きさ
をその両側部の凸部１６′，１６″の突起の大きさ
より大きくすることがより効果的である。 In this case, in the latter three arcuate convex portions, it is better to make the size of the protrusion 16 of the belt tooth top portion 14 larger than the size of the protrusion of the convex portions 16' and 16'' on both sides thereof. Effective.
なお、上記構成において第１領域１１のベルト
歯部形状は上記の如き円弧に限られるものではな
く、楕円形等を含む曲面であつてもよい。 In the above configuration, the shape of the belt tooth portion of the first region 11 is not limited to the circular arc as described above, but may be a curved surface including an ellipse or the like.
一方、ベルト溝部表面１３は通常、実質的に平
坦な平面であり、また第１領域１１の連結部であ
るベルト歯元１７，１７は曲率半径R2の円弧１
８となつている。 On the other hand, the belt groove surface 13 is usually a substantially flat plane, and the belt teeth roots 17, 17, which are the connecting portions of the first region 11, have a circular arc 1 with a radius of curvature R2 .
It has become 8.
次に上記のような歯付ベルトに対し、これに適
用できるプーリ１９はその１例として第３図に図
示するが、前記第２図に示されたベルトの形状を
基礎にして設計される。 Next, an example of a pulley 19 applicable to the toothed belt as described above is shown in FIG. 3, and is designed based on the shape of the belt shown in FIG. 2.
しかして、該プーリ１９のプーリ歯部２０は曲
率半径r2の円弧２１で形成される両端部２２，２
２と、直線で形成される歯先表面部２３から構成
され、また、このプーリ歯部間のプーリ溝部２４
は該溝部２４の中心線２５上に中心点２６を有す
る曲率半径r1の円弧２７により形成され、かつこ
の溝部２４の中心点２６は前記プーリ歯両端部の
円弧の中心点２８，２８と同一ライン上に位置す
る。従つて、プーリ溝部の高さHpはr1とr2を加
えたものであり、又、r1はr2の約３倍になつてい
る。 Thus, the pulley tooth portion 20 of the pulley 19 has both end portions 22, 2 formed by an arc 21 with a radius of curvature r2.
2, and a tooth tip surface portion 23 formed in a straight line, and a pulley groove portion 24 between the pulley tooth portions.
is formed by an arc 27 with a radius of curvature r 1 having a center point 26 on the center line 25 of the groove 24, and the center point 26 of the groove 24 is the same as the center points 28, 28 of the arcs at both ends of the pulley teeth. Located on the line. Therefore, the height Hp of the pulley groove is the sum of r 1 and r 2 , and r 1 is approximately three times as large as r 2 .
そして、前記歯付ベルトとプーリの寸法関係に
おいて、特にベルト歯部の第１領域の曲率半径
R1はプーリ溝部２４の曲率半径r1より通常、約１
〜30％大きく、またベルト歯部の高さHbはプー
リ溝部２４の深さHpより大きくしてベルト歯部
の第２領域１２の３つの凸部１６，１６′，１
６″をプーリの溝底部２９に重ねるか、もしくは
接触するようにする。 In the dimensional relationship between the toothed belt and the pulley, especially the radius of curvature of the first region of the belt teeth.
R 1 is usually about 1 from the radius of curvature r 1 of the pulley groove 24.
~30% larger, and the height Hb of the belt tooth portion is larger than the depth Hp of the pulley groove portion 24, and the three convex portions 16, 16', 1 of the second region 12 of the belt tooth portion are
6'' overlap or touch the groove bottom 29 of the pulley.
かくして、歯付ベルトとプーリの相対形状を叙
上のように形成すれば、ベルトとプーリが噛み合
うと、第４図に示す如くベルト歯部の第２領域１
２に設けられた３つの凸部１６，１６′，１６″が
プーリの溝底部２９と接触するか、もしくは衝接
した状態、即ちプーリ溝部２４において歯付ベル
ト７が上記３つの凸部１６，１６′，１６″で支持
された状態となり、これによつて歯付ベルト７は
プーリ溝部２４で安定した状態で保持されること
となる。 In this way, if the relative shapes of the toothed belt and the pulley are formed as described above, when the belt and the pulley mesh, the second region 1 of the belt tooth portion as shown in FIG.
In a state where the three convex portions 16, 16', 16'' provided on the pulley groove bottom 29 contact or collide with the groove bottom 29 of the pulley, that is, in the pulley groove portion 24, the toothed belt 7 16' and 16'', and as a result, the toothed belt 7 is held in a stable state in the pulley groove 24.
そして、たとえベルトが逆回転したりあるいは
負荷変動によつてベルトの有効張力が増大して
も、ベルト歯部８はベルト歯頂部の両サイドに設
けた凸部１６′，１６″の存在によつてその動きを
停止させられるため、ベルト歯頂部１４とプーリ
溝底部２９とのこすれ合いによるベルト歯頂部１
４の摩耗を防止することになる。しかも、歯付ベ
ルト７とプーリ１９とのバツクラツシユが大きく
なると、上記効果は一層、顕著に表われる。 Even if the effective tension of the belt increases due to reverse rotation of the belt or load fluctuations, the belt tooth portion 8 is maintained due to the presence of the convex portions 16' and 16'' provided on both sides of the belt tooth top. Belt tooth top 1 due to rubbing between belt tooth top 14 and pulley groove bottom 29
4 will be prevented from wearing out. Moreover, as the bump between the toothed belt 7 and the pulley 19 increases, the above effect becomes even more pronounced.
更に、ベルト歯頂部１４に位置する凸部１６を
その両サイドに位置している凸部１６′，１６″に
比べて大きく突出させるときは、該凸部１６が最
も大きく変形し、これによつてベルト溝部表面１
３とプーリ歯部表面２３とのたたき音が発生しな
いようになる。 Furthermore, when the convex part 16 located on the belt tooth crest 14 is made to protrude more than the convex parts 16' and 16'' located on both sides, the convex part 16 is deformed the most, and as a result, the convex part 16 deforms the most. Belt groove surface 1
3 and the surface 23 of the pulley tooth portion are no longer generated.
以上のように、本考案歯付ベルトの駆動装置は
ベルト歯部の第２領域にベルト歯頂部及びその両
サイドに円弧状の凸部を設け、両サイドの凸部に
はベルト歯部の動きを停止せしめるストツパーの
作用を分担させ、一方、ベルト歯頂部の凸部には
歯付ベルトとプーリとの衝撃力を担持させるよう
にしたことにより、従来の懸案であつたベルトの
逆回転時あるいは負荷変動時によるベルト歯頂部
とプーリ溝底部とのこすれ合いによるベルト歯頂
部の摩耗及びベルトとプーリとのたたき音を防止
することができ、歯付ベルトの駆動装置として優
れた実用的効果を発揮する。 As described above, the toothed belt drive device of the present invention is provided with arc-shaped protrusions on the top of the belt teeth and on both sides thereof in the second area of the belt teeth, and the protrusions on both sides allow movement of the belt teeth. By sharing the function of the stopper that stops the belt, and by making the convex part of the top of the belt bear the impact force between the toothed belt and the pulley, it is possible to prevent the belt from rotating backwards or It can prevent wear on the tops of the belt teeth due to the friction between the tops of the belt teeth and the bottom of the pulley grooves during load fluctuations, as well as the knocking noise between the belt and the pulleys, providing excellent practical effects as a drive device for toothed belts. .
第１図は従来の歯付ベルトとプーリを無負荷状
態で組み合せた状態を示す断面図、第２図は本考
案駆動装置に使用する歯付ベルトのベルト歯部の
断面図、第３図は本考案駆動装置に使用するプー
リの溝部の断面図、第４図は第２図及び第３図に
示す歯付ベルトとプーリを無負荷状態で組み合せ
た状態を示す断面図である。
７……歯付ベルト、８……歯部、９……溝部、
１１……第１領域、１２……第２領域、１３……
ベルト溝部表面、１４……ベルト歯頂部、１５…
…円弧、１６，１６′，１６″……凸部、１７……
ベルト歯元、１８……円弧、１９……プーリ、２
０……プーリ歯部、２１……円弧、２２……両端
部、２３……直線部、２４……プーリ溝部、２５
……中心線、２６……中心点。
Fig. 1 is a cross-sectional view showing a conventional toothed belt and pulley combined under no load, Fig. 2 is a cross-sectional view of the belt teeth of the toothed belt used in the drive device of the present invention, and Fig. 3 is FIG. 4 is a cross-sectional view of the groove portion of the pulley used in the drive device of the present invention. FIG. 4 is a cross-sectional view showing the toothed belt and pulley shown in FIGS. 2 and 3 combined in an unloaded state. 7...Toothed belt, 8...Tooth section, 9...Groove section,
11...first area, 12...second area, 13...
Belt groove surface, 14... Belt tooth top, 15...
...Circular arc, 16, 16', 16''...Protrusion, 17...
Belt tooth base, 18... Arc, 19... Pulley, 2
0...Pulley tooth portion, 21...Circular arc, 22...Both ends, 23...Straight line portion, 24...Pulley groove portion, 25
... Center line, 26 ... Center point.
Claims (1)
交互に有する歯付ベルトと、該歯付ベルトと噛
合するプーリとからなり、前記歯付ベルトは、
ベルト歯部の両側にあるベルト溝部表面からベ
ルト歯部高さの60〜98％の第１領域を曲面と
し、その末端よりベルト歯頂部に至る残りの第
２領域を３つの凸部をもつた波状屈曲面として
そのベルト歯部が構成され、歯付ベルトとプー
リの噛み合い完了時において前記ベルト歯部の
第２領域に設けた３つの凸部がプーリ溝部底面
に接触する如くなつていることを特徴とする歯
付ベルトの駆動装置。 ２ ベルト歯部の第１領域が断面形状においてベ
ルト歯元を円弧の一部とし残りの領域を互いに
交差するそれぞれ等しい半径を有する２つの円
弧で形成され、第２領域がベルト歯頂部とその
両側部に夫々円弧状の凸部を含む波状屈曲線か
らなる実用新案登録請求の範囲第１項記載の歯
付ベルトの駆動装置。 ３ プーリが断面形状において両端部の円弧と中
央部の直線部からなるプーリ歯部と、この歯部
間に形成される１つの所要中心をもつ円弧のプ
ーリ溝部から構成される実用新案登録請求の範
囲第１項記載の歯付ベルトの駆動装置。[Claims for Utility Model Registration] 1. A toothed belt consisting of a toothed belt having teeth and grooves alternately at a constant pitch in the longitudinal direction of the belt, and a pulley meshing with the toothed belt, the toothed belt comprising:
The first region from the surface of the belt groove on both sides of the belt tooth portion to 60 to 98% of the belt tooth height is a curved surface, and the remaining second region from the end to the top of the belt tooth has three convex portions. The belt tooth portion is formed as a wavy curved surface, and the three convex portions provided in the second region of the belt tooth portion are in contact with the bottom surface of the pulley groove when the toothed belt and the pulley are fully engaged. Features a toothed belt drive device. 2. The first region of the belt tooth section has a cross-sectional shape in which the belt tooth root is a part of the arc, and the remaining region is formed by two circular arcs having the same radius that intersect with each other, and the second region is formed by the belt tooth top and both sides thereof. A driving device for a toothed belt according to claim 1, which is a utility model, and comprises wavy curved lines each having an arcuate convex portion. 3. A request for utility model registration in which the pulley has a cross-sectional shape consisting of a pulley tooth section consisting of circular arcs at both ends and a straight section at the center, and a pulley groove section formed between the tooth sections and an arc having one required center. A drive device for a toothed belt according to scope 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497783U JPS6040846U (en) | 1983-08-30 | 1983-08-30 | Toothed belt drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13497783U JPS6040846U (en) | 1983-08-30 | 1983-08-30 | Toothed belt drive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6040846U JPS6040846U (en) | 1985-03-22 |
| JPS6132186Y2 true JPS6132186Y2 (en) | 1986-09-19 |
Family
ID=30303959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13497783U Granted JPS6040846U (en) | 1983-08-30 | 1983-08-30 | Toothed belt drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6040846U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552617B (en) | 2015-03-31 | 2021-03-17 | Fisher & Paykel Healthcare Ltd | A user interface and system for supplying gases to an airway |
| SG10202101375QA (en) | 2016-08-11 | 2021-03-30 | Fisher & Paykel Healthcare Ltd | A collapsible conduit, patient interface and headgear connector |
-
1983
- 1983-08-30 JP JP13497783U patent/JPS6040846U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6040846U (en) | 1985-03-22 |
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