JPH0451698B2 - - Google Patents
Info
- Publication number
- JPH0451698B2 JPH0451698B2 JP4494484A JP4494484A JPH0451698B2 JP H0451698 B2 JPH0451698 B2 JP H0451698B2 JP 4494484 A JP4494484 A JP 4494484A JP 4494484 A JP4494484 A JP 4494484A JP H0451698 B2 JPH0451698 B2 JP H0451698B2
- Authority
- JP
- Japan
- Prior art keywords
- worm
- screw
- roller
- worm wheel
- wheel
- 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
- 238000005096 rolling process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000010687 lubricating oil Substances 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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
-
- 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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
- F16H1/163—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel with balls between the co-operating parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、重量物の昇降に使用されるウオーム
ギヤ式ジヤツキに係わる。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a worm gear type jack used for lifting and lowering heavy objects.
［従来の技術］
従来、ウオームギヤジヤツキはウオームとウオ
ームホイール及びスクリユーを主要構成部材と
し、ウオームとウオームホイール及びウオームホ
イールとスクリユーの各回転接触部はそれぞれ滑
り接触構造であり、潤滑油ににより摩擦を軽減す
る手段が取られていた。[Prior Art] Conventionally, a worm gear jack has a worm, a worm wheel, and a screw as its main components, and each rotating contact part between the worm and the worm wheel and the worm wheel and the screw has a sliding contact structure, and the friction is reduced by lubricating oil. Measures were taken to reduce this.
［発明が解決しようとする問題点］
重量物を昇降するウオームギヤジヤツキは、電
動機等でウオームを駆動してウオームホイールを
回転させることにより、ウオームホイールの内径
部に螺合するスクリユーを上下作動させるもの
で、ウオームとウオームホイールの接触歯面はウ
オームホイールを回転させるための大きな力を受
けながら、しかも、両歯車は回転するため接触歯
面は常に滑り接触することとなり、大きな摩擦が
生じる。また、ウオームホイールの内径ねじとこ
れに螺合するスクリユーのねじ接触面には重量物
を支えるための支持力が発生し、しかも、ウオー
ムホイールが回転するため、ねじ接触面も滑り接
触して摩擦が生じる。これらの摩擦は接触面の損
傷、摩耗、その摩擦による発熱を生むので、これ
らの摩擦の軽減が大きな課題であつた。[Problems to be solved by the invention] A worm gear jack that lifts and lowers heavy objects drives a worm with an electric motor or the like to rotate the worm wheel, thereby vertically moving a screw that is threaded onto the inner diameter of the worm wheel. The contact tooth surfaces between the worm and the worm wheel receive a large force to rotate the worm wheel, and since both gears rotate, the contact tooth surfaces constantly slide into contact, creating large friction. In addition, a supporting force for supporting heavy objects is generated between the inner diameter thread of the worm wheel and the screw contact surface of the screw that is screwed into it.Moreover, as the worm wheel rotates, the screw contact surface also slides into contact and causes friction. occurs. These frictions cause damage to the contact surfaces, wear, and heat generation due to the friction, so reducing these frictions has been a major challenge.
［問題を解決するための手段］
本発明は、ウオーム用スクリユーのねじ部及び
駆動歯車の外周に支持リングにより配設され、両
端に歯溝を形成する数個のローラねじをそれぞれ
回動自在に配置し、ウオーム用スクリユーのねじ
部及びこの両端に刻設した駆動歯車が、それぞれ
前者ウオーム用スクリユーはローラねじに螺合
し、後者駆動歯車はローラねじの歯溝に噛合して
形成したウオーム体と、該ウオーム体に直角に噛
合するウオームホイールと、衛星ローラねじ数個
を外筒ナツトの内部に配置しウオームホイールと
一体としたローラねじ軸受と、ローラねじ軸受の
衛星ローラねじに螺合するスクリユーと、これら
を内蔵する本体、その蓋体とで構成し、ウオーム
体とウオームホイール間の摩擦及びスクリユー
と、ウオームホイール間の摩擦を転がり接触摩擦
とし、摩擦の軽減を図る手段をとる。[Means for Solving the Problems] The present invention includes several roller screws which are arranged by support rings on the threaded portion of the worm screw and the outer periphery of the drive gear, and each of which has tooth grooves at both ends is rotatably provided. The threaded part of the worm screw and the driving gears carved on both ends of the worm screw are arranged so that the former worm screw is screwed into the roller screw, and the latter driving gear is formed by meshing with the tooth groove of the roller screw. A worm wheel that meshes with the worm body at right angles, a roller screw bearing in which several satellite roller screws are arranged inside the outer cylinder nut and integrated with the worm wheel, and a roller screw bearing that is screwed into the satellite roller screw of the roller screw bearing. It is composed of a screw, a main body containing the screws, and its lid, and the friction between the worm body and the worm wheel and the friction between the screw and the worm wheel are used as rolling contact friction, and a means is taken to reduce the friction.
［作用］
かくして、スクリユーとウオームホイール間及
びウオーム体とウオームホイール間の摩擦を滑り
摩擦から転がり摩擦に転じ、大荷重、高速運転に
対しても、ねじ面の損傷、摩耗を少なくする。[Function] In this way, the friction between the screw and the worm wheel and between the worm body and the worm wheel is changed from sliding friction to rolling friction, thereby reducing damage and wear on the screw surface even under heavy loads and high-speed operation.
［実施例］
図について詳細に説明すると、本体１が蓋体２
によつて封じられる空間には、その両端をベアリ
ング３，４を介して支承されたウオームホイール
５を配し、その軸心を貫通するスクリユー６は本
体１、蓋体２より突出する。ウオームホイール５
には第１図に示されるローラねじ軸受が組込ま
れ、その外筒ナツトＡはキー７を介してウオーム
ホイール５に係止一体とされ、数個の衛星ローラ
ねじＢはそれぞれスクリユー６に螺合することと
なる。[Example] To explain the figure in detail, the main body 1 is connected to the lid body 2.
A worm wheel 5 whose both ends are supported via bearings 3 and 4 is disposed in the space enclosed by the worm wheel 5, and a screw 6 passing through the axis thereof protrudes from the main body 1 and the lid 2. Worm wheel 5
The roller screw bearing shown in FIG. I will do it.
ウオームホイール５にはその軸心に直角に配し
たローラねじ８（前記衛星ローラねじＢに類似し
ており、図では８個とされる）のうち数個（図で
は２個）を螺合させ、該ローラねじ８に螺合する
ウオーム用スクリユー９をベアリング１０，１１
で支承し、その本体１から突出した一端１２を駆
動側とする。 The worm wheel 5 is screwed with several roller screws (two in the figure) out of the roller screws 8 (similar to the satellite roller screw B, and eight in the figure) arranged perpendicularly to the axis of the worm wheel. , the worm screw 9 screwed into the roller screw 8 is connected to the bearings 10 and 11.
One end 12 protruding from the main body 1 is the drive side.
ローラねじ８はその向きをウオーム用スクリユ
ー９に対して反対向き、すなわち、ウオーム用ス
クリユー９が右ねじであればローラねじ８は各左
ねじとする。しかして、ローラねじ８のねじ両端
部は、それぞれの外周に等分に軸方向に平行に数
個の歯溝１３が刻設されてピニオンを形成し、こ
れがウオーム用スクリユー９のスクリユー部両側
に配した歯車１４と噛合するのでウオーム用スク
リユー９とローラねじ８の間には滑ることなく転
がり接触が行われる。また、ウオーム用スクリユ
ー９とローラねじ８のねじ進み量を同じくするよ
うなねじ角度とすることによつて、ローラねじ８
は左右にズレることなくウオーム用スクリユー９
の周囲を自転しながら公転する。 The roller screw 8 is oriented in the opposite direction to the worm screw 9, that is, if the worm screw 9 is a right-handed screw, the roller screw 8 is a left-handed screw. Thus, on both ends of the roller screw 8, several tooth grooves 13 are carved equally in parallel to the axial direction on the outer periphery of each to form a pinion, and these are formed on both sides of the screw portion of the worm screw 9. Since it meshes with the disposed gear 14, rolling contact is made between the worm screw 9 and the roller screw 8 without slipping. In addition, by setting the screw angle so that the screw advance amount of the worm screw 9 and the roller screw 8 are the same, the roller screw 8
The worm screw 9 does not shift from side to side.
It revolves around its axis while rotating.
他方、ウオームホイール５はローラねじ８と螺
合してＦ面上を転がるので、ねじ作用によりウオ
ームホイール５は回動する。なお、支持リング１
５はローラねじ８をウオーム用スクリユー９の周
囲に配置し支持するための支持板である。 On the other hand, since the worm wheel 5 is screwed with the roller screw 8 and rolls on the F plane, the worm wheel 5 rotates due to the screw action. In addition, support ring 1
5 is a support plate for disposing and supporting the roller screw 8 around the worm screw 9.
かくして、ローラねじ軸受はスクリユー６の軸
受として、ウオーム体はウオームとしてそれぞれ
作用し、したがつて、後者は前者とは類似しなが
らも歯溝１３、駆動歯車１４が設けられて、その
作用は前者と大いに異なる。 Thus, the roller screw bearing acts as a bearing for the screw 6, and the worm body acts as a worm.Thus, although the latter is similar to the former, it is provided with tooth grooves 13 and drive gear 14, and its function is the same as that of the former. is very different.
使用に際しては、ウオーム用スクリユー９の駆
動側１２に原動機（図示せず）を連結し、スクリ
ユー６の先端に螺合したヘツド（図示せず）を介
して荷重を載置し、その昇降を行うことになる。 In use, a prime mover (not shown) is connected to the drive side 12 of the worm screw 9, and a load is placed through a head (not shown) screwed to the tip of the screw 6 to raise and lower it. It turns out.
［効果］
本発明は前記は構成、作用により、スクリユー
に対してはローラねじ軸受自体が軸方向荷重をそ
の数個の衛星ローラねじ接触点により分担し、ウ
オームホイールに対してはウオーム体の数個のロ
ーラねじがその負荷ににる摩擦を著しく減じるこ
とを特徴とするウオーム体とウオームホイールで
駆動するローラねじジヤツキである。[Effects] The present invention has the structure and operation as described above; for the screw, the roller screw bearing itself shares the axial load by its several satellite roller screw contact points, and for the worm wheel, the axial load is shared by the number of worm bodies. This is a roller screw jack driven by a worm body and a worm wheel, which is characterized in that the friction exerted by the roller screws on the load is significantly reduced.
第１図はローラねじ軸受の内部構造を、第２，
３図は本発明に係る実施例の側面図及び平面図の
内部を、第２図では第３図のイ−イ断面におい
て、第３図では第２図のロ−ロ断面においてそれ
ぞれ切断して、また、第４図は第５図のニ−ニ断
面において、第５図は第４図のハ−ハ断面におい
てそれぞれ切断して、それらの詳細を示す。
Ａ…外筒ナツト、Ｂ…衛星ローラねじ、１…本
体、２…蓋体、３，４…ベアリング、５…ウオー
ムホイール、６…スクリユー、７…キー、８…ロ
ーラねじ、９…ウオーム用スクリユー、１０，１
１…ベアリング、１２…スクリユー駆動端、１３
…歯溝、１４…駆動歯車、１５…支持リング。
Figure 1 shows the internal structure of the roller screw bearing.
3 is a side view and a plan view of the interior of the embodiment according to the present invention, respectively cut at the E--A cross section in FIG. 3 in FIG. 2 and at the Ro-Ro cross section in FIG. Further, FIG. 4 is cut at the knee cross section in FIG. 5, and FIG. 5 is cut at the half cross section in FIG. 4 to show their details. A...Outer cylinder nut, B...Satellite roller screw, 1...Main body, 2...Lid, 3, 4...Bearing, 5...Worm wheel, 6...Screw, 7...Key, 8...Roller screw, 9...Screw for worm ,10,1
1... Bearing, 12... Screw drive end, 13
...Tooth groove, 14...Drive gear, 15...Support ring.
Claims (1)
螺合するウオーム体とウオームホイール、さら
に、該ウオームホイール及び本体と蓋体の各軸心
を貫通するスクリユーとからなるウオームギヤ式
ジヤツキにおいて、ウオーム用スクリユーのねじ
部及び駆動歯車部の外周に支持リングにより配設
され両端に歯溝を形成する数個のローラねじをそ
れぞれ螺合、噛合して形成したウオーム体と、こ
れに直角に噛合するウオームホイールと、該ウオ
ームホイールと一体に内蔵され、しかも、外筒ナ
ツト内部の衛星ローラねじ数個がウオームホイー
ルと螺合するローラねじ軸受と、該ローラねじ軸
受に螺合するスクリユーにより構成したことを特
徴とするウオーム体とウオームホイールで駆動す
るローラねじジヤツキ。1. A worm gear type jack consisting of a main body and its lid, a worm body and a worm wheel built into these and screwed together, and a screw passing through each axis of the worm wheel, the main body, and the lid. A worm body is formed by threading and meshing several roller screws which are disposed on the outer periphery of the threaded part of the screw and the driving gear part by a support ring and have tooth grooves at both ends, and a worm body which meshes with the worm body at right angles to the worm body. It is composed of a wheel, a roller screw bearing that is built in integrally with the worm wheel, and in which several satellite roller screws inside the outer cylinder nut are screwed together with the worm wheel, and a screw that is screwed into the roller screw bearing. A roller screw jack driven by a worm body and worm wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4494484A JPS60188655A (en) | 1984-03-08 | 1984-03-08 | Roller screw jack driven by worm and worm wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4494484A JPS60188655A (en) | 1984-03-08 | 1984-03-08 | Roller screw jack driven by worm and worm wheel |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59103094A Division JPS60188641A (en) | 1984-05-21 | 1984-05-21 | Roller worm speed reduction gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60188655A JPS60188655A (en) | 1985-09-26 |
| JPH0451698B2 true JPH0451698B2 (en) | 1992-08-19 |
Family
ID=12705591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4494484A Granted JPS60188655A (en) | 1984-03-08 | 1984-03-08 | Roller screw jack driven by worm and worm wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60188655A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4186969B2 (en) | 2005-08-23 | 2008-11-26 | トヨタ自動車株式会社 | Planetary rotation-linear motion converter |
| DE102010052918A1 (en) * | 2010-11-30 | 2012-05-31 | Schaeffler Technologies Gmbh & Co. Kg | jack |
| GB201201270D0 (en) | 2012-01-26 | 2012-03-07 | Goodrich Actuation Systems Ltd | Nose-wheel steering actuator |
-
1984
- 1984-03-08 JP JP4494484A patent/JPS60188655A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60188655A (en) | 1985-09-26 |
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