JPS5888259A - Dust-proof device for floating inscribed paired gears - Google Patents
Dust-proof device for floating inscribed paired gearsInfo
- Publication number
- JPS5888259A JPS5888259A JP56184373A JP18437381A JPS5888259A JP S5888259 A JPS5888259 A JP S5888259A JP 56184373 A JP56184373 A JP 56184373A JP 18437381 A JP18437381 A JP 18437381A JP S5888259 A JPS5888259 A JP S5888259A
- Authority
- JP
- Japan
- Prior art keywords
- external gear
- floating
- internal
- inscribed
- guide plates
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J13/00—Guards for chain, chain drive or equivalent drive, e.g. belt drive
- B62J13/04—Guards for chain, chain drive or equivalent drive, e.g. belt drive completely enclosing the chain drive or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Gear Transmission (AREA)
- Sealing Devices (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
動張力調節機能を有Ｔる伝動装置における内歯歯車を有
するリング状の内接浮動車と、この内接浮動車と噛合Ｔ
る外歯歯車とよりなる浮動内ｔｉｐ歯車組の防ｗＭ装置
に関Ｔるものである。Detailed Description of the Invention: A ring-shaped internal floating wheel having an internal gear in a transmission device having a dynamic tension adjustment function, and a T meshing with the internal floating wheel.
The present invention relates to an anti-wrinkle M device for a floating internal tip gear set consisting of an external gear and an external gear.
第１ｌ７４および第２図は伝動帯の自動張力調節機能を
有する伝動装置の一例Ｐ示すもので、こねは自転車の駆
１装置に適用したものである。図中ｌは駆動軸、２はこ
の駆動軸／に固着した外歯歯車、３は内周部に内歯３ａ
を設けたリング状の内接浮動車で、外歯歯車一と浮動状
態で内接一合するものである。ダは駆動軸ｌと離間した
位置に保持ぎわ，でいる被動軸、ｊはこの被動軸ダに設
けたもう一方の伝動車である被動車、６は前記内接浮動
車３の外周部と被動車ｊの外周部．にかけ渡した伝動帯
であり、こσ）伝動％はベルトまたはチェノいずわでも
よい。本実施例では歯付きベルト（タイミングベルト）
ｆ−使用している。FIG. 1174 and FIG. 2 show an example of a transmission device having an automatic tension adjustment function of a transmission band, which is applied to a bicycle drive device. In the figure, l is a drive shaft, 2 is an external gear fixed to this drive shaft, and 3 is an internal tooth 3a on the inner periphery.
This is a ring-shaped internal floating wheel provided with a ring, which is internally connected to the external gear in a floating state. DA is a driven shaft that is held at a position apart from the drive shaft l, j is a driven wheel that is the other transmission wheel provided on this driven shaft DA, and 6 is the outer peripheral part of the internal floating wheel 3 and the driven shaft. The outer periphery of car j. This is a transmission band stretched over the σ) transmission %, which may be a belt or chain. In this example, a toothed belt (timing belt)
f-Using.
この伝動装置の伝動帯ｔに第１図の矢印Ｂのような張力
が作用すると、伝動帯６にゆるみがある場合には内接浮
動車３が下方へ偏心移動Ｔること（よｒＩ、伝動帯６の
ゆるみを自動的に吸収Ｔる。When tension as shown by arrow B in Fig. 1 is applied to the transmission band t of this transmission device, if the transmission band 6 is loose, the internal floating wheel 3 will eccentrically move downward (T). Looseness of the band 6 is automatically absorbed.
この機能か伝動帯の自動張力調節機能である。This function is the automatic tension adjustment function of the transmission belt.
しかして上述のような内接浮動車を有する伝動ｍ楢を自
転車等の車両に組みつけた場合、上述のように外歯歯車
コと浮動状態で噛合している内接歯車組の内接浮動車３
の内歯３ａと外歯歯車コの外歯２ａとの１ｌｔｉには空
隙７があるため、この空隙７内に外部がら塵挨やその他
の異物が侵入したり・雨水か侵入Ｔると、歯が損傷した
り、歯の摩耗が一増大するという問題点があった。However, when a transmission gear having an internal floating wheel as described above is assembled into a vehicle such as a bicycle, the internal floating of the internal gear set meshing with the external gear in a floating state as described above. car 3
Since there is a gap 7 between the internal teeth 3a of the gear and the external teeth 2a of the external gear, if dust or other foreign matter from the outside enters into this gap 7, or if rainwater enters, the teeth may become damaged. There were problems such as damage to the teeth and increased tooth wear.
この問題点を解消Ｉるため、例えば第３図に示すように
、内接浮動車３の両側面に中空円板ｌばあてかつてボル
トタおよびナラ）／θにより固定してこれらの円板ｔが
外歯歯車λの側面と摺動接触よるようにして前記空隙７
ｆ−来ぐ方決もあるが、この方法では円板ｔが少しでも
変形したり撓んだりＴると防塵効果が減少したり、摺動
接触抵抗が増大よるなどの欠点があった。In order to solve this problem, for example, as shown in FIG. The gap 7 is in sliding contact with the side surface of the external gear λ.
Although there is a method to use f-, this method has drawbacks such as a reduction in the dust-proofing effect and an increase in sliding contact resistance if the disk t is even slightly deformed or bent.
本発明は、このような問題点Ｐ解決Ｔるためｋなされた
もので、外歯歯車の両側面に中空円板状の案内板を添設
するとともに、この案内板に挾まれて回転する内接浮動
車の両側面に案内板の側面に摺接Ｔる円環状のシールリ
ングを設け、浮動状態で噛合Ｔる内接歯車組の空ＩＩＩ
Ｆｓｆ−外部と遮！１９： Ｔることにより、噛合部へ
の異物や雨水の侵入を防ぎ、−合部に塗着しかグリース
等の潤滑剤を長期、間保誇して歯面の摩耗を極カ抑える
ととも釘、異物ｆ［み込むこと紀よる歯の損傷を防止す
る十ｋ、防塵のための接触摩擦抵抗ｆ−極力小すくシて
、内接歯車組の噛み合いの安定および駆動効率の向上を
目的とＴるものである。The present invention has been made to solve these problems, and includes hollow disc-shaped guide plates attached to both sides of an external gear, and an internal gear that rotates while being sandwiched between the guide plates. An annular seal ring is provided on both sides of the floating wheel that slides into contact with the side surface of the guide plate, and the internal gear set meshes with the side surface of the guide plate in a floating state.
Fsf - Shield from the outside! 19: By applying T, it prevents foreign matter and rainwater from entering the mating part, and it also keeps lubricant such as grease applied to the mating part for a long period of time, which greatly reduces wear on the tooth surface. , To prevent damage to the teeth due to foreign matter f [intrusion], Contact friction resistance f for dust prevention - To reduce as much as possible, the purpose is to stabilize the meshing of the internal gear set and improve drive efficiency. It is something that
以下第を図について本発明の詳細な説明する。The present invention will be described in detail below with reference to the figures.
図中前記した符号と同一の符号は同等のものを示Ｔ６な
お／ｌは駆動軸ｌと一体に連結したクランクアームであ
る。In the drawings, the same reference numerals as those described above indicate equivalent parts, and T6/l is a crank arm integrally connected to the drive shaft l.
本発明においては、内接浮動車３の巾を外歯歯車λの巾
よりわずかに小キ〈シ、外歯歯１ｉＬコの両側面にそｎ
、 ５ ｎ中空円板状の案内板ｒをあてがい、これら案
内板ｔと外歯歯車コを貫通Ｔるボルトタおよびナツト１
０により案内板ｔｌｒ外歯外歯歯車面定Ｔる。案内板ｌ
の外径は内接浮動車３に歯付きベルト≦ｌｒ＠装した状
態の外径より外歯歯車コと内接浮動車３との噛合方向に
おいて若干外方へはみ出す程度とし、案内板ｌの内径は
外歯歯車λの歯底径よりもある稈度小ざいことが望まし
い。次に、内接浮動車３の内歯歯車の歯底円直径より幾
分大σ〕弾性物勢いシールリング７２ Ｎ−嵌装し、こ
のシールリング１２の一部を内接浮動車３の側面より突
出させて、案内板ｌの内側面にｍ接するようにする。In the present invention, the width of the internal floating wheel 3 is slightly smaller than the width of the external gear λ.
, 5 N A hollow disc-shaped guide plate r is applied, and a bolt and nut 1 are inserted through these guide plates t and the external gear.
0, the guide plate tlr external gear surface is determined. Information board l
The outer diameter of the guide plate L should be such that it slightly protrudes outward in the meshing direction of the external gear and the internal floating wheel 3 than the outer diameter of the toothed belt ≦lr@ installed on the internal floating wheel 3. It is desirable that the inner diameter is smaller than the root diameter of the external gear λ by a certain degree. Next, an elastic force seal ring 72 N- (slightly larger than the tooth bottom diameter of the internal gear of the internal floating wheel 3) is fitted, and a part of this seal ring 12 is attached to the side surface of the internal floating wheel 3. It is made to protrude more and come into contact with the inner surface of the guide plate l.
次に、上述のように構成した本発明防塵装置の作用効果
を説明する。外歯歯車λと一体のクランクアーム／／の
先端のペダル（図示せず）ｆ−踏み込むと外歯歯車コか
回転し、この外歯歯車−に浮動状態で一合する内接浮＠
＋車３が同一回転方向へ回転し、さらに伝動帯６Ｔｒ−
介して被駆動阜ｊが回転する。この場合内接浮動車Ｊに
番ゴ軸がないから、内接浮動車３の回転中心は外歯歯車
コの回転中心に対して偏心している。このため第３図の
ものでは案内板ｌの中心寄りの内面が常紀外讃歯車コの
側面と摺動する。このよう釘案内板ｌの内面か直接外歯
歯車−の側面と摺動Ｔると摺動摩擦が多がつｔす、摺１
面じ間隙か生じて防−塵効果が不完全となるか、第を図
に示工本発明装置においては内接浮動車３０両側に嵌装
したシールリング１２か内接浮１１′車３の側面より外
方に突出しており、このシールリング／２のみか案内板
ｒの内側面と摺１Ｅ１１接触するから、これにより外歯
歯車コと内接浮１隼３（ハ内歯３ａとσ）空ｌＩ１部７
Ｎ−外部から完全に遮断Ｔることができる。また摺動接
触抵抗か減ら丁ため（シールリング１２の材質を適宜選
択、Ｔることによって、己らに摺動摩擦抵抗を非常に小
さくすることかできる。また、本発明のように案内＆ｔ
にシールリング１２のみか接触するよう＆：Ｔると、こ
のシールリングｎｒｒｆｉｔｒ装した内接浮動車３の０
１！ｌ壁は精密加工する必要がなく、表面の若干の凹凸
は障害とならないから側壁部の仕上げ加工を節減できる
という効果も得られる。なお本実施例においては、浮動
内接歯車組を駆動側とした場合について説明したか、こ
の浮動内接歯車組を被動側にした場合においても本発明
？適用できることは云うまでもない。Next, the effects of the dustproof device of the present invention configured as described above will be explained. Pedal (not shown) at the end of the crank arm integrated with the external gear λ (f) - When depressed, the external gear rotates, and the internal float is aligned with the external gear in a floating state.
The +wheel 3 rotates in the same rotational direction, and the transmission band 6Tr-
The driven shaft j rotates through the shaft. In this case, since the internal floating wheel J does not have a rotary shaft, the rotation center of the internal floating wheel 3 is eccentric with respect to the rotation center of the external gear. Therefore, in the one shown in Fig. 3, the inner surface of the guide plate l near the center slides on the side surface of the outer gear. In this way, when the inner surface of the nail guide plate 1 slides directly against the side surface of the external gear, there will be a lot of sliding friction.
In the device of the present invention, the seal ring 12 fitted on both sides of the internal floating wheel 30 or the side surface of the internal floating wheel 11' wheel 3 is shown in the figure. It protrudes further outward, and only this seal ring /2 comes into contact with the inner surface of the guide plate r. lI part 7
N- Can be completely shut off from the outside. In addition, since the sliding contact resistance is reduced (by appropriately selecting and selecting the material of the seal ring 12, the sliding frictional resistance can be made very small.
0 of the internal floating wheel 3 equipped with this seal ring nrrfitr.
1! There is no need for precision machining of the l wall, and slight irregularities on the surface do not pose an obstacle, resulting in the effect that finishing machining of the side wall portions can be reduced. In addition, in this embodiment, the case where the floating internal gear set is used as the driving side has been explained, but can the present invention also be applied when the floating internal gear set is used as the driven side? Needless to say, it can be applied.
第１図は浮動内接歯車組を有するベルト伝動製電の正面
図、第、２図Ｇｅｔ第１図のＡ−ムーｒ面図、第３図は
前１．伝動装置に従来の防塵機構を設けた状ｎｆ−示Ｔ
断面図、第１Ｉ図は本発明の防塵装置Ｐ示Ｔ断面図であ
る。
ｌ・・・駆動軸、２・・・外歯歯車、３・・・内接浮動
車、３ａ・・・内歯、ｔ・・・被動軸、ｊ・・・被動車
（伝動車）、６・・・伝動帯（歯付きベルト）、７・・
・空隙、ｌ・・・案内板、９・・・ボルト、ＩＯ・・・
ナツト、／／・・・クランクアーム、１２・・・シール
リング。Fig. 1 is a front view of a belt transmission electrical machine having a floating internal gear set, Fig. 2 is an A-moor side view of Fig. NF-T with a conventional dust-proof mechanism installed in the transmission
The cross-sectional view, FIG. 1I, is a cross-sectional view of the dust prevention device P of the present invention. l... Drive shaft, 2... External gear, 3... Internal floating wheel, 3a... Internal tooth, t... Driven shaft, j... Driven wheel (transmission wheel), 6 ...Transmission band (toothed belt), 7...
・Gap, l...Guide plate, 9...Bolt, IO...
Nut, //... Crank arm, 12... Seal ring.
Claims (1)
歯車と噛合させ、離間位置に設けた伝動車と前記内接浮
動車の外周部に伝動帝号かけ渡した伝動装置の浮動内接
歯車組において、前記外歯歯車の両側面に中空円板状の
案内板を添設するとともに、この案内板に挾まｊて回転
よる内接浮動車の両側面に、案内板の側面（摺接する円
環状のシールリングな設けたことを特徴とする浮動内接
歯車組の防塵装置）０L A transmission device in which a ring-shaped internal floating wheel with internal teeth on the inner periphery meshes with an externally toothed gear, and a transmission wheel is provided at a separate position and a transmission wheel is connected to the outer periphery of the internal floating wheel. In the floating internal gear set, hollow disc-shaped guide plates are attached to both sides of the external gear, and guide plates are attached to both sides of the internal floating wheel that rotates by being sandwiched between the guide plates. (a dust-proof device for a floating internal gear set characterized by a sliding annular seal ring)0
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56184373A JPS5922103B2 (en) | 1981-11-19 | 1981-11-19 | Dust prevention device for floating internal gear set |
| US06/438,499 US4501576A (en) | 1981-11-12 | 1982-11-02 | Power transmission mechanism |
| EP82110177A EP0079534B1 (en) | 1981-11-12 | 1982-11-04 | Power transmission mechanism |
| DE8282110177T DE3273766D1 (en) | 1981-11-12 | 1982-11-04 | Power transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56184373A JPS5922103B2 (en) | 1981-11-19 | 1981-11-19 | Dust prevention device for floating internal gear set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5888259A true JPS5888259A (en) | 1983-05-26 |
| JPS5922103B2 JPS5922103B2 (en) | 1984-05-24 |
Family
ID=16152073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56184373A Expired JPS5922103B2 (en) | 1981-11-12 | 1981-11-19 | Dust prevention device for floating internal gear set |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5922103B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016027274A (en) * | 2014-06-23 | 2016-02-18 | 株式会社リコー | Drive transmission device and image formation device |
-
1981
- 1981-11-19 JP JP56184373A patent/JPS5922103B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016027274A (en) * | 2014-06-23 | 2016-02-18 | 株式会社リコー | Drive transmission device and image formation device |
| US10480638B2 (en) | 2014-06-23 | 2019-11-19 | Ricoh Company, Ltd. | Drive transmitter and image forming apparatus incorporating the drive transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5922103B2 (en) | 1984-05-24 |
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