JPS6139867Y2 - - Google Patents
Info
- Publication number
- JPS6139867Y2 JPS6139867Y2 JP13035781U JP13035781U JPS6139867Y2 JP S6139867 Y2 JPS6139867 Y2 JP S6139867Y2 JP 13035781 U JP13035781 U JP 13035781U JP 13035781 U JP13035781 U JP 13035781U JP S6139867 Y2 JPS6139867 Y2 JP S6139867Y2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- tooth
- pulley
- toothed
- protrusion
- 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
- 230000001788 irregular Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 239000011295 pitch Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
- F16H7/023—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts with belts having a toothed contact surface or regularly spaced bosses or hollows for slipless or nearly slipless meshing with complementary profiled contact surface of a pulley
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Description
【考案の詳細な説明】
この考案は歯付ベルト伝動装置に関し、特に運
転時の騒音レベルを低減した歯付ベルト及び歯付
プーリの構造に関する。[Detailed Description of the Invention] This invention relates to a toothed belt transmission device, and in particular to the structure of a toothed belt and a toothed pulley that reduce the noise level during operation.
第１図は従来の歯付ベルト伝動装置を示し、歯
付ベルト１の歯高ｈは歯付プーリ２の歯高Ｈより
も小さいので、ベルト歯３がプーリ歯溝４に噛合
時したときに、ベルト歯先５とプーリ歯底６との
間には隙間７が生ずる。したがつて、ベルト１と
プーリ２との噛合当初において、ベルト歯底９が
プーリ歯先８に衝突して数ＫHzないし数10KHzの
規制的高周波衝突音の騒音を発生するばかりでな
く、ベルト歯３がプーリ歯溝４に噛合したとき、
ベルト歯先５とプーリ歯底６との間に隙間７が存
するからプーリ歯先８がベルト歯底９に接する部
分の抗張体１０は、１の範囲内では円弧状をな
してプーリ２に巻きつくが、プーリ歯溝４とベル
ト歯３とが噛合する部分は、隙間７があつてベル
ト歯３が拘束されないため、抗張体１０は２の
範囲内で直線状を呈する。そのためガラス繊維の
非鉄繊維よらなる抗張体１０は範囲１と２の
境界点で急激に屈曲し、これによる疲労によりベ
ルト１が損傷し易い。 FIG. 1 shows a conventional toothed belt transmission device. Since the tooth height h of the toothed belt 1 is smaller than the tooth height H of the toothed pulley 2, when the belt teeth 3 mesh with the pulley tooth grooves 4, , a gap 7 is created between the belt tooth tip 5 and the pulley tooth bottom 6. Therefore, at the beginning of meshing between the belt 1 and the pulley 2, the belt tooth bottom 9 collides with the pulley tooth tip 8, which not only generates regulatory high frequency collision noise of several KHz to several tens of KHz, but also causes the belt teeth to collide with the pulley tooth tip 8. 3 meshes with the pulley tooth groove 4,
Since there is a gap 7 between the belt tooth tip 5 and the pulley tooth bottom 6, the tensile member 10 at the portion where the pulley tooth tip 8 contacts the belt tooth bottom 9 forms an arc within the range 1 and is connected to the pulley 2. However, since there is a gap 7 in the portion where the pulley tooth groove 4 and the belt tooth 3 mesh and the belt tooth 3 is not restrained, the tensile member 10 has a straight shape within the range of 2. Therefore, the tensile member 10 made of non-ferrous glass fibers bends sharply at the boundary point between ranges 1 and 2, and the belt 1 is likely to be damaged due to fatigue caused by this.
本案の目的は、前記騒音の周波数を不規則なら
しめることにより騒音レベルを低下させ、併せて
抗張体の疲労損傷を防止した歯付ベルト伝動装置
を提案するにある。 The purpose of the present invention is to propose a toothed belt transmission device that reduces the noise level by making the frequency of the noise irregular and also prevents fatigue damage to the tensile member.
以下本案の図示実施例について説明する。 An illustrated embodiment of the present invention will be described below.
第２図の実施例においては、ベルト歯先１５に
プーリ歯底１６に圧接する弾性突起２１を不規則
なピツチｐ１，ｐ２等をもつて形成し、突起２１
を含むベルト歯高ｈを歯付プーリ１２の歯高Ｈよ
りも僅か大なるしめ、噛合状態においてはプーリ
歯１３と突起２１が圧縮されて、両歯高ｈとＨが
等しくなるようにする。そのため突起２１の高さ
δは0.01〜0.2mm位に定める（第８図）。 In the embodiment shown in FIG. 2, an elastic protrusion 21 that presses against the pulley tooth bottom 16 is formed on the belt tooth tip 15 with irregular pitches p1, p2, etc., and the protrusion 21
The belt tooth height h including the tooth height h is made slightly larger than the tooth height H of the toothed pulley 12, and in the engaged state, the pulley teeth 13 and the protrusion 21 are compressed so that both tooth heights h and H become equal. Therefore, the height δ of the protrusion 21 is set at about 0.01 to 0.2 mm (Fig. 8).
しかるとき、ベルト１１とプーリ１２との噛合
当初においては、先づ突起２１がプーリ歯底１６
に衝突し、突起２１が圧縮されつつベルト歯底１
９にプーリ歯先１８が接触する。したがつて該接
触時にベルト歯底１９は突起２１の弾性力により
プーリ歯先１８に対し衝突力が緩和されて接触
し、衝突音は突起２１がプーリ歯底１６に衝突し
たときに生ずる。しかしこの衝突音は突起２１の
弾性により減衰されると共に、突起２１のピツチ
が不規則であるために、衝突音の周波数は不規則
となり、連続発生する同様の衝突音が互に干渉し
合つて騒音レベルを低下させる。 At this time, when the belt 11 and the pulley 12 initially engage, the protrusion 21 first touches the bottom 16 of the pulley tooth.
The protrusion 21 collides with the belt tooth bottom 1 while being compressed.
9 comes into contact with the pulley tooth tip 18. Therefore, at the time of the contact, the belt tooth bottom 19 comes into contact with the pulley tooth tip 18 with the collision force being relaxed by the elastic force of the projection 21, and a collision sound is generated when the projection 21 collides with the pulley tooth bottom 16. However, this collision sound is attenuated by the elasticity of the protrusion 21, and since the pitch of the protrusion 21 is irregular, the frequency of the collision sound becomes irregular, and similar collision sounds that occur continuously interfere with each other. Reduce noise level.
またベルト１１とプーリ１２とが噛合したの
ち、は、抗張体２０がプーリ歯先１８に円弧状に
巻きつくので、従来のように隙間７が存するため
に抗張体の局部的屈曲により抗張体２０が弦運動
をして騒音を発生するようなことも防止される。 Furthermore, after the belt 11 and the pulley 12 are engaged, the tensile member 20 wraps around the pulley tooth tip 18 in an arc shape, so unlike the conventional method, there is a gap 7, so that the tensile member is locally bent to provide resistance. It is also possible to prevent the tension body 20 from making string motion and generating noise.
突起２１を設けたことによる騒音レベルの減少
効果は上記の通りであり、突起２１の形状は任意
でよい。 The effect of reducing the noise level by providing the protrusion 21 is as described above, and the shape of the protrusion 21 may be arbitrary.
第３図はプーリ１２の歯底１６に不規則なピツ
チδ１，δ２，δ３等をもつて突起２２を設けた
実施例を示し、突起２２の高さは第２図における
突起２１と同程度である（第９図）。本実施例で
は突起自体は弾性変形をしないが、これに圧接す
るベルト歯先１５の弾性変形が突起２２との衝突
音を一部吸収すると共に、該衝突音の連続発生周
期が不規則となり、第２図の実施例におけると同
様の理により騒音レベルを低下させることができ
る。 FIG. 3 shows an embodiment in which projections 22 are provided on the bottom 16 of the pulley 12 with irregular pitches δ1, δ2, δ3, etc., and the height of the projections 22 is about the same as the projection 21 in FIG. Yes (Figure 9). In this embodiment, the protrusion itself does not undergo elastic deformation, but the elastic deformation of the belt tooth tips 15 that are in pressure contact with the protrusion partially absorbs the collision sound with the protrusion 22, and the continuous generation period of the collision noise becomes irregular. The noise level can be reduced by the same principle as in the embodiment of FIG.
第４図は不規則に選択したベルト歯１３Ａに突
起２１Ａを設けた第２図の変形例を示し、各ベル
ト歯１３Ａにおける突起設置位置は必ずしも一定
でなくてもよい。この場合は、突起２１Ａを設け
ないベルト歯の歯高は従来と同様にプーリ歯高よ
り僅か少にする。 FIG. 4 shows a modification of FIG. 2 in which protrusions 21A are provided on irregularly selected belt teeth 13A, and the protrusion installation position on each belt tooth 13A does not necessarily have to be constant. In this case, the tooth height of the belt teeth without the protrusion 21A is made slightly smaller than the pulley tooth height, as in the conventional case.
第５図は不規則に選択したプーリ歯底１６Ａに
突起２２Ａを設けた第３図の変形例を示す。但し
突起２２Ａを設けないプーリ歯底１６の深さはベ
ルト歯先１５が接触しないよう僅か深くしてお
く。 FIG. 5 shows a modification of FIG. 3 in which protrusions 22A are provided on irregularly selected pulley tooth bottoms 16A. However, the depth of the pulley tooth bottom 16 without the protrusion 22A is set slightly deep so that the belt tooth tip 15 does not come into contact with it.
上記各実施例において突起２１，２１Ａ，２
２，２２Ａ等を0.01〜0.2mmの高さ程度に変形す
ることはかなり高度の技術を要し、特にベルトは
ゴムの収縮のため所定高さの突起を形成し難い
が、ベルトに突起を設けることは、突起のばね定
数が小さいので、プーリ歯底１６，１６Ａに対す
る圧接力に大なる差はなく、ベルト、プーリとも
製作公差を大きくとることができる利点があり、
また突起のピツチが不規則であるから、この面か
らも製作し易い利点がある。 In each of the above embodiments, the protrusions 21, 21A, 2
2, 22A, etc., to a height of 0.01 to 0.2 mm requires quite advanced technology, and it is especially difficult to form protrusions of a specified height on belts due to the contraction of rubber, but it is difficult to form protrusions on belts. In other words, since the spring constant of the protrusion is small, there is no significant difference in the pressure contact force against the pulley tooth bottoms 16, 16A, and there is an advantage that manufacturing tolerances can be made large for both the belt and the pulley.
Furthermore, since the pitch of the protrusions is irregular, there is an advantage in that it is easy to manufacture.
前記衝突音の周波数を不規則にするためには、
突起２１，２１Ａ，２２，２２Ａ等を設ける代り
に、第６図、第７図に示すように、不規則に選択
したベルト歯１３Ａの歯高をｈ１より0.01〜0.2
mm高いｈ２に増したり（第１０図）、或は同じく
不規則に選択したプーリ歯底１６Ａを他のプーリ
歯底１６より0.01〜0.02mm浅く形成して（第１０
図）、歯高ｈ２をＨ１より小ならしめる方法もあ
る。これらの場合には、ベルト歯１５Ａとプーリ
歯底１６の衝突音、或はプーリ歯底１６Ａとベル
ト歯先１５との衝突音が不規則周期をもつて発生
し、前記と同様に衝突音同志の干渉によつて騒音
レベルを低下させることができる。 In order to make the frequency of the collision sound irregular,
Instead of providing the protrusions 21, 21A, 22, 22A, etc., as shown in FIGS. 6 and 7, the tooth height of randomly selected belt teeth 13A is set by 0.01 to 0.2 from h1.
mm higher h2 (Fig. 10), or by forming irregularly selected pulley tooth bottoms 16A 0.01 to 0.02 mm shallower than other pulley tooth bottoms 16 (Fig. 10).
There is also a method of making the tooth height h2 smaller than H1. In these cases, the collision sound between the belt tooth 15A and the pulley tooth bottom 16, or the collision sound between the pulley tooth bottom 16A and the belt tooth tip 15, occurs at irregular intervals, and as in the above case, the collision noise is generated by the collision sound. The noise level can be reduced by the interference of
また第１１図に示すように、不規則に選択した
ベルト歯１３Ｂの歯高をプーリ歯底１６に接触し
ないようにプーリ歯高より0.01〜0.2mm小ならし
め、他のベルト歯１３の歯高をプーリ歯高と等し
く定めた場合にも、ベルト歯先１５とプーリ歯底
１６との衝突音は不規則周期をもつて発生し、騒
音レベルを低下させることができる。この場合は
ベルト歯１３の先端部分が一種の突起として作用
する。 Further, as shown in FIG. 11, the tooth height of irregularly selected belt teeth 13B is set to be 0.01 to 0.2 mm smaller than the pulley tooth height so as not to contact the pulley tooth bottom 16, and the tooth height of other belt teeth 13 is Even when the height is set equal to the pulley tooth height, the collision sound between the belt tooth tip 15 and the pulley tooth bottom 16 is generated at irregular intervals, and the noise level can be reduced. In this case, the tip portion of the belt tooth 13 acts as a kind of protrusion.
以上のように、本案においては、歯付ベルトが
歯付プーリと噛合する際に、ベルト歯底とベルト
歯先、又はベルト歯先とプーリ歯底との衝突音の
発生周波数を不規則ならしめて、各衝突音間の干
渉作用により騒音レベルを低下させ得る効果を有
し、また、噛合状態においてベルト歯先とプーリ
歯底との間に隙間を存することによつて、ベルト
の一部がその前後のベルト部分に対し急激に屈曲
することに基因する弦運動によつて生ずる騒音を
も防止し、全体的に騒音レベルを低下させると共
に、前記屈曲による歯付ベルトの破損を防止しう
る効果がある。 As described above, in this proposal, when the toothed belt meshes with the toothed pulley, the frequency of the collision sound between the bottom of the belt tooth and the top of the belt tooth, or between the top of the belt tooth and the bottom of the pulley tooth is made irregular. , has the effect of reducing the noise level due to the interference effect between each collision sound, and also has the effect of lowering the noise level due to the interference between each collision sound, and because there is a gap between the belt tooth tip and the pulley tooth bottom in the meshed state, a part of the belt It also prevents noise caused by string motion caused by sudden bending of the front and rear belt parts, reduces the overall noise level, and has the effect of preventing damage to the toothed belt due to the bending. be.
第１図は従来の歯付ベルト伝動装置の部分立面
図、第２図ないし第１１図は本案の実施例を示
し、第２図は一実施例の部分立面図、第３図は他
の実施例のプーリの部分立面図、第４図は第２図
の歯付ベルトの変形例の立面図、第５図は第３図
の変形例の立面図、第６図は更に他の実施例の歯
付ベルトの立面図、第７図は更に他の実施例の歯
付プーリの立面図、第８図は第２図の突起の寸法
説明図、第９図は第３図の突起の寸法説明図、第
１０図は第６図、第７図のベルト歯及びプーリ歯
溝の関係説明図、第１１図は別の実施例の立面図
である。
１１……歯付ベルト、１２……歯付プーリ、１
３……ベルト歯、１５……ベルト歯先、１６……
ベルト歯底、２１，２１Ａ，２２，２２Ａ……突
起。
Fig. 1 is a partial elevational view of a conventional toothed belt transmission device, Figs. 2 to 11 show embodiments of the present invention, Fig. 2 is a partial elevational view of one embodiment, and Fig. 3 is a partial elevational view of another embodiment. FIG. 4 is an elevational view of a modified example of the toothed belt shown in FIG. 2, FIG. 5 is an elevational view of a modified example of FIG. 3, and FIG. FIG. 7 is an elevational view of a toothed belt according to another embodiment, FIG. 7 is an elevational view of a toothed pulley according to another embodiment, FIG. FIG. 3 is an explanatory diagram of the dimensions of the protrusion, FIG. 10 is an explanatory diagram of the relationship between the belt teeth and pulley tooth grooves of FIGS. 6 and 7, and FIG. 11 is an elevational view of another embodiment. 11...Toothed belt, 12...Toothed pulley, 1
3... Belt tooth, 15... Belt tooth tip, 16...
Belt tooth bottom, 21, 21A, 22, 22A...protrusion.
Claims (1)
付ベルトのベルト歯先又は歯付プーリのプーリ
歯底のいずれかに、噛合時にそれぞれプーリ歯
底又はベルト歯先に圧接する突起を不規則なピ
ツチをもつて設けたことを特徴とする歯付ベル
ト伝動装置。 (2) 突起を含むベルト歯高が歯付プーリのプーリ
歯高より0.01〜0.2mm大なる実用新案登録請求
の範囲第１項記載の歯付ベルト伝動装置。[Scope of Claim for Utility Model Registration] (1) Either the belt tooth tip of a toothed belt having belt teeth made of an elastic material such as rubber or the pulley tooth bottom of a toothed pulley, when engaged, the belt tooth bottom or the belt, respectively. A toothed belt transmission device characterized by having protrusions with an irregular pitch that press against the tips of the teeth. (2) The toothed belt transmission device according to claim 1, wherein the belt tooth height including the protrusions is 0.01 to 0.2 mm larger than the tooth height of the toothed pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13035781U JPS5836648U (en) | 1981-09-03 | 1981-09-03 | toothed belt transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13035781U JPS5836648U (en) | 1981-09-03 | 1981-09-03 | toothed belt transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5836648U JPS5836648U (en) | 1983-03-10 |
| JPS6139867Y2 true JPS6139867Y2 (en) | 1986-11-14 |
Family
ID=29923989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13035781U Granted JPS5836648U (en) | 1981-09-03 | 1981-09-03 | toothed belt transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5836648U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6067454U (en) * | 1983-10-17 | 1985-05-13 | 三ツ星ベルト株式会社 | Toothed belt drive device |
| US7896332B2 (en) * | 2007-10-23 | 2011-03-01 | Kabushiki Kaisha Toshiba | Belt driving mechanism, image forming apparatus including the same, and method for driving belt |
-
1981
- 1981-09-03 JP JP13035781U patent/JPS5836648U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5836648U (en) | 1983-03-10 |
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