JPH0886347A - Decelerator - Google Patents

Decelerator

Info

Publication number
JPH0886347A
JPH0886347A JP22286894A JP22286894A JPH0886347A JP H0886347 A JPH0886347 A JP H0886347A JP 22286894 A JP22286894 A JP 22286894A JP 22286894 A JP22286894 A JP 22286894A JP H0886347 A JPH0886347 A JP H0886347A
Authority
JP
Japan
Prior art keywords
wheel
worm
tooth
lubricating oil
shaft hole
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.)
Pending
Application number
JP22286894A
Other languages
Japanese (ja)
Inventor
Kenji Kanayama
健司 金山
Masayoshi Furuichi
正義 古市
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kokusai Electric Corp
Original Assignee
Kokusai Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kokusai Electric Corp filed Critical Kokusai Electric Corp
Priority to JP22286894A priority Critical patent/JPH0886347A/en
Publication of JPH0886347A publication Critical patent/JPH0886347A/en
Pending legal-status Critical Current

Links

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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0457—Splash lubrication
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0498—Worm gearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • General Details Of Gearings (AREA)

Abstract

PURPOSE: To lubricate lubrication oil sufficiently at the engagement portion of a wheel and a worm even at the time of action start. CONSTITUTION: A wheel 1 is made up of a boss portion 4 and a gear portion 2, and teeth 3 of a predetermined number are provided on the outer periphery surface of the gear portion 2, and each oil storage portion 9 is provided at each valley portion 8 between teeth 3. A shaft hole 5 is provided at the wheel 1, and a key groove 6 is provided at the shaft hole 5, and a screw hole 7 is provided at a boss portion 4. A worm 10 is made up of a boss portion and a tooth portion 17, and a spiral tooth 11 is provided on the outer periphery surface of the tooth portion 17, and a slitlike groove 16 is provided at the root of the tooth 11. A shaft hole 12 is provided at the worm 10, and a key groove 13 is provided at the shaft hole 12, and a screw hole is provided at the boss portion, and the wheel 1 and the worm 10 are made to mesh with each other, and the lower portion of the wheel 1 is immersed in lubrication oil 18.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明はホイールとウォームと
を有する減速機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed reducer having wheels and worms.

【０００２】[0002]

【従来の技術】入力軸と出力軸とが直交し、入力軸、出
力軸が水平で、かつ出力軸が入力軸の下方に位置する減
速機においては、入力軸にウォームが取り付けられ、出
力軸にホイールが取り付けられ、ホイールの下部が潤滑
油に浸されている。2. Description of the Related Art In a reducer in which an input shaft and an output shaft are orthogonal to each other, the input shaft and the output shaft are horizontal, and the output shaft is located below the input shaft, a worm is attached to the input shaft and The wheel is attached to the lower part of the wheel, and the lower part of the wheel is immersed in lubricating oil.

【０００３】この減速機においては、ウォーム、ホイー
ルが回転すると、ホイールが潤滑油を汲み上げ、ホイー
ルとウォームとの係合部が潤滑されるから、ホイール、
ウォームの摩耗を防止することができるとともに、動力
の伝達効率を向上することができる。In this speed reducer, when the worm and the wheel rotate, the wheel pumps up the lubricating oil and lubricates the engaging portion between the wheel and the worm.
Worm wear can be prevented, and the power transmission efficiency can be improved.

【０００４】[0004]

【発明が解決しようとする課題】しかし、このような減
速機においては、ウォーム、ホイールの回転を停止して
からの時間が経過するにつれて、ホイールとウォームと
の係合部から潤滑油が流下して、ホイールとウォームと
の係合部に十分な油膜が形成されなくなることがあり、
この場合には次回の動作開始の際にホイールとウォーム
との係合部を十分に潤滑することができない。However, in such a speed reducer, as time elapses after the rotation of the worm and the wheel is stopped, the lubricating oil flows down from the engaging portion of the wheel and the worm. As a result, a sufficient oil film may not be formed in the engaging portion between the wheel and the worm,
In this case, the engagement portion between the wheel and the worm cannot be sufficiently lubricated at the start of the next operation.

【０００５】この発明は上述の課題を解決するためにな
されたもので、動作開始の際にもホイールとウォームと
の係合部を十分に潤滑することができる減速機を提供す
ることを目的とする。The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a speed reducer capable of sufficiently lubricating the engagement portion between the wheel and the worm even when the operation is started. To do.

【０００６】[0006]

【課題を解決するための手段】この目的を達成するた
め、この発明においては、ホイールと、上記ホイールと
噛み合ったウォームとを有し、上記ホイールの下部が潤
滑油に浸された減速機において、上記ホイールの歯車部
の谷部に油溜め部を設け、上記ウォームの歯の根本にス
リット状の溝を設ける。To achieve this object, in the present invention, in a speed reducer having a wheel and a worm meshing with the wheel, the lower portion of the wheel being immersed in lubricating oil, An oil sump portion is provided in the valley portion of the gear portion of the wheel, and a slit-like groove is provided at the root of the tooth of the worm.

【０００７】[0007]

【作用】この減速機においては、ホイールの回転を停止
してからの時間が経過し、ホイールとウォームとの係合
部から潤滑油が流下したとしても、油溜め部、溝内に潤
滑油が保持される。In this speed reducer, even if the lubricating oil flows down from the engaging portion between the wheel and the worm after a lapse of time since the rotation of the wheel is stopped, the lubricating oil will not flow into the oil sump and the groove. Retained.

【０００８】[0008]

【実施例】図１はこの発明に係る減速機の一部を示す正
断面図、図２は図１に示した減速機を示す側面図、図３
は図１に示した減速機のホイールを示す断面図、図３は
図１に示した減速機のウォームを示す一部切断図であ
る。図に示すように、ホイール１はボス部４と歯車部２
とから構成され、歯車部２の外周面に所定数の歯３が設
けられ、歯３間の谷部８に油溜め部９が設けられ、ホイ
ール１に軸穴５が設けられ、軸穴５にキー溝６が設けら
れ、ボス部４にねじ孔７が設けられ、軸穴５に出力軸
（図示せず）が取り付けられる。また、ウォーム１０は
ボス部１４と歯部１７とから構成され、歯部１７の外周
面に螺旋状の歯１１が設けられ、歯１１の根本にスリッ
ト状の溝１６が設けられ、溝１６の幅は１ｍｍ、深さは
２〜３ｍｍであり、ウォーム１０に軸穴１２が設けら
れ、軸穴１２にキー溝１３が設けられ、ボス部１４にね
じ孔１５が設けられ、軸穴１２に入力軸（図示せず）が
取り付けられる。そして、ホイール１とウォーム１０と
が噛み合っており、ホイール１の下部が潤滑油１８に浸
されている。1 is a front sectional view showing a part of a speed reducer according to the present invention, FIG. 2 is a side view showing the speed reducer shown in FIG. 1, and FIG.
3 is a sectional view showing a wheel of the speed reducer shown in FIG. 1, and FIG. 3 is a partial cutaway view showing a worm of the speed reducer shown in FIG. As shown in the figure, the wheel 1 includes a boss portion 4 and a gear portion 2
And a predetermined number of teeth 3 are provided on the outer peripheral surface of the gear portion 2, an oil sump portion 9 is provided in a valley portion 8 between the teeth 3, a shaft hole 5 is provided in the wheel 1, and a shaft hole 5 is provided. Is provided with a key groove 6, a boss portion 4 is provided with a screw hole 7, and a shaft hole 5 is provided with an output shaft (not shown). Further, the worm 10 is composed of a boss portion 14 and a tooth portion 17, a spiral tooth 11 is provided on the outer peripheral surface of the tooth portion 17, a slit-shaped groove 16 is provided at the root of the tooth 11, and The width is 1 mm and the depth is 2 to 3 mm. The worm 10 is provided with the shaft hole 12, the shaft hole 12 is provided with the key groove 13, the boss portion 14 is provided with the screw hole 15, and the shaft hole 12 is input. A shaft (not shown) is attached. The wheel 1 and the worm 10 mesh with each other, and the lower portion of the wheel 1 is immersed in the lubricating oil 18.

【０００９】この減速機においては、ウォーム１０、ホ
イール１が回転すると、ホイール１が潤滑油１８を汲み
上げ、ホイール１とウォーム１０との係合部が潤滑され
る。この場合、油溜め部９、溝１６内に潤滑油が入り、
ウォーム１０の回転中は溝１６内の潤滑油に遠心力が作
用するが、潤滑油の粘性により、溝１６内の潤滑油はほ
とんど飛散しない。そして、ウォーム１０、ホイール１
の回転を停止してからの時間が経過すると、ホイール１
とウォーム１０との係合部から潤滑油が流下し、歯１１
の表面の油膜は薄くなる。しかし、溝１６内の潤滑油は
その粘性による付着力と毛細管現象とによって流下する
ことがなく、溝１６内に潤滑油が保持される。また、上
部の油溜め部９内には潤滑油が保持され、この油溜め部
９内の潤滑油は歯１１の表面と接触しているから、毛細
管現象によって油溜め部９内の潤滑油と歯１１の油膜と
が繋がる。このため、再びウォーム１０、ホイール１が
回転すると、溝１６内の潤滑油は遠心力によって歯１１
の表面を歯先へと伝わるとともに、油溜め部９内の潤滑
油がホイール１とウォーム１０との係合部に供給され
る。したがって、動作開始の際にもホイール１とウォー
ム１０との係合部を十分に潤滑することができる。In this speed reducer, when the worm 10 and the wheel 1 rotate, the wheel 1 pumps up the lubricating oil 18, and the engaging portion between the wheel 1 and the worm 10 is lubricated. In this case, lubricating oil enters the oil sump 9 and the groove 16,
While the worm 10 is rotating, centrifugal force acts on the lubricating oil in the groove 16, but due to the viscosity of the lubricating oil, the lubricating oil in the groove 16 hardly scatters. And worm 10, wheel 1
When the time elapsed after the rotation of the
Lubricating oil flows down from the engaging portion between the tooth and the worm 10, and the tooth 11
The oil film on the surface becomes thin. However, the lubricating oil in the groove 16 does not flow down due to the adhesive force due to its viscosity and the capillary phenomenon, and the lubricating oil is retained in the groove 16. Further, the lubricating oil is held in the upper oil sump portion 9 and the lubricating oil in the oil sump portion 9 is in contact with the surfaces of the teeth 11, so that the lubricating oil in the oil sump portion 9 is absorbed by the capillary phenomenon. The oil film of the tooth 11 is connected. For this reason, when the worm 10 and the wheel 1 rotate again, the lubricating oil in the groove 16 is rotated by the centrifugal force to the teeth 11
The lubricant oil in the oil sump 9 is supplied to the engagement portion between the wheel 1 and the worm 10 while being transmitted to the tooth tips of the wheel. Therefore, even when the operation is started, the engagement portion between the wheel 1 and the worm 10 can be sufficiently lubricated.

【００１０】[0010]

【発明の効果】以上説明したように、この発明に係る減
速機においては、ホイールの回転を停止してからの時間
が経過し、ホイールとウォームとの係合部から潤滑油が
流下したとしても、油溜め部、溝に潤滑油が保持される
から、動作開始の際にもホイールとウォームとの係合部
を十分に潤滑することができる。As described above, in the speed reducer according to the present invention, even if the time elapses after the rotation of the wheel is stopped and the lubricating oil flows down from the engaging portion between the wheel and the worm. Since the lubricating oil is retained in the oil sump and the groove, it is possible to sufficiently lubricate the engaging portion between the wheel and the worm even when the operation is started.

【図面の簡単な説明】[Brief description of drawings]

【図１】この発明に係る減速機の一部を示す正断面図で
ある。FIG. 1 is a front sectional view showing a part of a speed reducer according to the present invention.

【図２】図１に示した減速機を示す側面図である。FIG. 2 is a side view showing the speed reducer shown in FIG.

【図３】図１に示した減速機のホイールを示す断面図で
ある。3 is a sectional view showing a wheel of the speed reducer shown in FIG. 1. FIG.

【図４】図１に示した減速機のウォームを示す一部切断
図である。4 is a partial cutaway view showing a worm of the speed reducer shown in FIG. 1. FIG.

【符号の説明】[Explanation of symbols]

１…ホイール ２…歯車部 ８…谷部 ９…油溜め部 １０…ウォーム １１…歯 １６…溝 １８…潤滑油 1 ... Wheel 2 ... Gear part 8 ... Valley part 9 ... Oil sump part 10 ... Worm 11 ... Tooth 16 ... Groove 18 ... Lubricating oil

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】ホイールと、上記ホイールと噛み合ったウ
ォームとを有し、上記ホイールの下部が潤滑油に浸され
た減速機において、上記ホイールの歯車部の谷部に油溜
め部を設け、上記ウォームの歯の根本にスリット状の溝
を設けたことを特徴とする減速機。1. A reduction gear having a wheel and a worm meshing with the wheel, wherein a lower portion of the wheel is immersed in lubricating oil, and an oil sump portion is provided at a valley portion of a gear portion of the wheel. A speed reducer characterized in that a slit-like groove is provided at the root of the worm tooth.
JP22286894A 1994-09-19 1994-09-19 Decelerator Pending JPH0886347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22286894A JPH0886347A (en) 1994-09-19 1994-09-19 Decelerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22286894A JPH0886347A (en) 1994-09-19 1994-09-19 Decelerator

Publications (1)

Publication Number Publication Date
JPH0886347A true JPH0886347A (en) 1996-04-02

Family

ID=16789151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22286894A Pending JPH0886347A (en) 1994-09-19 1994-09-19 Decelerator

Country Status (1)

Country Link
JP (1) JPH0886347A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321812A (en) * 2006-05-30 2007-12-13 Jtekt Corp Reduction gear, electric power steering device and worm
JP2013096548A (en) * 2011-11-04 2013-05-20 Mabuchi Motor Co Ltd Worm gear
KR101478915B1 (en) * 2013-07-19 2015-01-02 현대중공업 주식회사 Pulley and drive device, and apparatus for transferring substrate comprising the same
CN105715665A (en) * 2014-12-18 2016-06-29 通用汽车环球科技运作有限责任公司 Rotating shaft for an automobile

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321812A (en) * 2006-05-30 2007-12-13 Jtekt Corp Reduction gear, electric power steering device and worm
JP4702623B2 (en) * 2006-05-30 2011-06-15 株式会社ジェイテクト Reducer, electric power steering device and worm
JP2013096548A (en) * 2011-11-04 2013-05-20 Mabuchi Motor Co Ltd Worm gear
US9618082B2 (en) 2011-11-04 2017-04-11 Mabuchi Motor Co., Ltd. Worm gear
DE112012004609B4 (en) 2011-11-04 2022-04-21 Mabuchi Motor Co., Ltd. worm gear
KR101478915B1 (en) * 2013-07-19 2015-01-02 현대중공업 주식회사 Pulley and drive device, and apparatus for transferring substrate comprising the same
CN105715665A (en) * 2014-12-18 2016-06-29 通用汽车环球科技运作有限责任公司 Rotating shaft for an automobile

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