JPS63266249A - Worm gearing, load of which periodically change - Google Patents

Worm gearing, load of which periodically change

Info

Publication number
JPS63266249A
JPS63266249A JP62256451A JP25645187A JPS63266249A JP S63266249 A JPS63266249 A JP S63266249A JP 62256451 A JP62256451 A JP 62256451A JP 25645187 A JP25645187 A JP 25645187A JP S63266249 A JPS63266249 A JP S63266249A
Authority
JP
Japan
Prior art keywords
worm
worm gear
teeth
transmission
load
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
Application number
JP62256451A
Other languages
Japanese (ja)
Other versions
JPH0240893B2 (en
Inventor
ホルスト・ザイビツケ
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of JPS63266249A publication Critical patent/JPS63266249A/en
Publication of JPH0240893B2 publication Critical patent/JPH0240893B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H1/00Toothed gearings for conveying rotary motion
    • F16H1/02Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/06Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16Means for transmitting drive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/06Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16Means for transmitting drive
    • B60S1/18Means for transmitting drive mechanically
    • B60S1/24Means for transmitting drive mechanically by rotary cranks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)
  • Transmission Devices (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 )  本発明は、変化する荷重が常にウオーム歯車の同
じ歯範囲に作用し、ウオーム歯車が凹面歯あるいはグロ
ボイド歯をもっている、周期的に荷重の変化するウオー
ム伝動装置に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a worm transmission with a cyclic load change, in which the changing load always acts on the same tooth range of the worm gear, and the worm gear has concave or globoid teeth.

ウオームが既にケースへ組込まれているときウオーム歯
車を後から組込むのを可能にする平歯をウオーム歯車が
もっているウオーム伝動装置は公知である。このような
組込みは、平歯をもつウオーム歯車の歯形が歯幅全体に
わたって同じであり、さらにウオーム歯車の回転軸に対
して平行であるため可能なのである。このように構成さ
れるウオーム伝動装置の欠点は、ウオ−ムの保合状態に
あるねじ山がウオーム歯車の、瞬間的保合状態にある歯
と点接触しかしていないことである。ウオームおよび特
に平歯の比荷重は、ウオーム伝動装置に作用する荷重が
その最大値に達するとき特に大きい。凹面歯あるいはグ
ロ°ボイド歯をもつウオーム歯車を使用する際、円柱状
ウオームとグロボイド歯ウオーム歯車との接触が線接触
であるものは公知であり、これにより歯の比荷重は著し
く減少するが、このように構成された伝動装置を上述し
たように組込むことは全く不可能である。すなわちまず
ウオーム歯車を組込み、それからウオームをねじのよう
にウオーム歯車の歯へねじはめねばならない。
Worm transmissions are known in which the worm gear has spur teeth which make it possible to install the worm gear later when the worm is already installed in the housing. Such an installation is possible because the tooth profile of a worm gear with spur teeth is the same over the entire tooth width and is parallel to the axis of rotation of the worm gear. A disadvantage of a worm gear constructed in this way is that the engaged threads of the worm only make point contact with the momentarily engaged teeth of the worm gear. The specific load of the worm and especially of the spur teeth is particularly high when the load acting on the worm gear reaches its maximum value. When using a worm gear with concave teeth or globoid teeth, it is known that the contact between the cylindrical worm and the globoid tooth worm gear is a line contact, which significantly reduces the specific load of the teeth. It is simply impossible to install a transmission configured in this way in the manner described above. That is, the worm gear must first be installed, and then the worm must be screwed into the teeth of the worm gear like a screw.

これらの欠点を回避するため本発明によれば、ウオーム
歯車の歯の荷重を受ける周範囲のうち/11さい荷重を
受ける周範囲の歯が、ウオーム歯車の幅のほぼ中央まで
除去されている。
In order to avoid these drawbacks, according to the invention, the teeth in the load-bearing circumferential range of /11 of the load-bearing circumferential range of the teeth of the worm gear are removed to approximately the center of the width of the worm gear.

このようなウオーム伝動装置は、伝動装置に最大荷重が
作用すると、ウオーム歯車の凹面歯あるいはグロボイド
歯として構成された歯部分がウオームとかみ合い、それ
により歯の比荷重が低減されるという利点をもっている
。他方ウオーム歯車の歯の一部を除去された周範囲が組
込みの際円柱状ウオームへかみ合わされるので、伝動装
置を簡単に組豆てることができる。しかも組込みの際、
ウオーム歯車の歯の一部を除去された周範囲が小さい荷
重を受ける周範囲にあるように留意すれば、この周範囲
における歯の比荷重に関して何の欠点も生じない。
Such a worm transmission has the advantage that when a maximum load is applied to the transmission, the tooth portions of the worm gear, which are configured as concave or globoid teeth, mesh with the worm, thereby reducing the specific load of the teeth. . On the other hand, the partially removed circumferential region of the teeth of the worm gear meshes with the cylindrical worm during installation, so that the transmission can be easily assembled. Moreover, when incorporating
If care is taken that the circumferential region of the worm gear in which some of the teeth are removed is in a circumferential region which is subject to small loads, no disadvantages arise with respect to the specific loading of the teeth in this circumferential region.

本発明の実施例を図面について以下に説明する。Embodiments of the invention are described below with reference to the drawings.

自動車の窓ふき装置の第1図に示す原理図によれば、こ
の窓ふき装置に属するウオーム伝動装置10のウオーム
12は、図示しない駆動電動機の出力軸に連結されてい
る。円柱状ウオーム12として構成された伝動ウオーム
は、プラスチックから作られて凹面歯あるいはグロボイ
ド歯をもつ歯車14にかみ合っている。ウオーム歯車1
4はウオーム歯車軸16上にあり、ウオーム歯車14と
共に回転するクランク18がこの歯車軸16と固定的に
結合されている。クランク18の自由端には連接棒20
が枢着され、この連接棒20の他端は、車体に支持され
る窓ふき軸24上に固着した揺動片22へ枢着されてい
る。
According to the principle diagram shown in FIG. 1 of a window cleaning device for an automobile, a worm 12 of a worm transmission 10 belonging to this window cleaning device is connected to an output shaft of a drive motor (not shown). The transmission worm, which is configured as a cylindrical worm 12, meshes with a gear wheel 14 made of plastic and having concave or globoid teeth. Worm gear 1
4 is located on a worm gear shaft 16, and a crank 18 that rotates together with the worm gear 14 is fixedly connected to this gear shaft 16. At the free end of the crank 18 is a connecting rod 20
The other end of the connecting rod 20 is pivotally connected to a swing piece 22 fixed on a window cleaning shaft 24 supported by the vehicle body.

窓ふき軸24に取付けられた窓ふき腕26を介して、窓
ふき羽根28が窓ふき軸24へ連結されている。窓ふき
装置が作動していると、クランク18が矢印30の方向
に回転し、それにより連接棒20が両方向矢印32の方
向に動かされて、揺動片22を両方向矢印34の方向に
連行する。その際揺動片22は角αにわたって一方の反
転位置から他方の反転位置へ揺動する。したがってクラ
ンク18、連接棒20および揺動片22は揺動伝動装置
を形成している。しかし揺動片22と共に窓ふき軸24
シたがって窓ふき羽根28も、両方向矢印36および3
8で示すように揺動運動する。窓ふき羽根28は図示し
てない自動車の窓のふき取り区域40をこする。ふき取
り区域40は扇形をなしており、窓ふき羽根28の揺動
角βは揺動片22の揺動角αに等しい。
A window cleaning blade 28 is connected to the window cleaning shaft 24 via a window cleaning arm 26 attached to the window cleaning shaft 24. When the window cleaning device is in operation, the crank 18 rotates in the direction of the arrow 30, thereby moving the connecting rod 20 in the direction of the double arrow 32 and entraining the rocker piece 22 in the direction of the double arrow 34. . The rocker piece 22 then swings over the angle α from one reversal position to the other reversal position. The crank 18, the connecting rod 20 and the rocker piece 22 thus form a rocker transmission. However, together with the swinging piece 22, the window cleaning shaft 24
Accordingly, the window cleaning blade 28 also has double arrows 36 and 3.
It makes a rocking motion as shown at 8. Window wiping blade 28 scrubs a wiping area 40 of a motor vehicle window, not shown. The wiping area 40 is fan-shaped, and the swing angle β of the window wiping blade 28 is equal to the swing angle α of the swing piece 22.

伝動装置ioに作用するトルクがふき取り区域40にお
ける窓ふき羽根28のそのつどの位置に関係して変化す
ることは明らかである。その際このトルクは窓ふき羽根
28の反転位置42の範囲でほぼ零に減少し、窓ふき羽
根28が第1図に示すふき取り区域40の中央範囲にあ
るとき、最大値に達する。したがってウオーム伝動装置
lOは周期的に変化する荷重を受けることになる。組込
みを簡単にするためウオーム12が既に組込まれている
ときはじめて、ウオーム伝動装置lOを包囲するケース
44ヘウオーム歯車14が挿入されるようにする。した
がってウオーム歯車14が図の面に対して垂直にウオー
ム12とかみ合うようにする。その際考慮すべきことは
、同時にウオーム歯鳴16も伝動装置ケース44にある
図示しない軸受へ入れねばならないことである。ウオー
ム歯車14がいわゆる凹面歯あるいはグロボイド歯をも
っていると、このような組込みは不可能である。
It is clear that the torque acting on the transmission io varies as a function of the respective position of the window wiping blade 28 in the wiping area 40. This torque then decreases to approximately zero in the region of the reversal position 42 of the window cleaning blade 28 and reaches its maximum value when the window cleaning blade 28 is in the central area of the wiping zone 40 shown in FIG. The worm gear IO is therefore subjected to periodically varying loads. To simplify installation, it is provided that the worm gear 14 is only inserted into the housing 44 surrounding the worm gear IO when the worm 12 has already been installed. The worm gear 14 therefore meshes with the worm 12 perpendicular to the plane of the drawing. It should be taken into account that at the same time the worm rattle 16 must also be inserted into a bearing (not shown) in the transmission case 44. Such an installation is not possible if the worm gear 14 has so-called concave or globoid teeth.

したがって本発明によれば、第2図に示すように、ウオ
ーム歯車14の全周にグロボイド歯54が設けられるが
、最初に述べた組込みの困難を回避するために、比較的
小さい周範囲でグロボイド歯54をウオーム歯車幅50
のほば中央まで除去して、この周絢囲にあるウオーム歯
車14が、側面72からのみ歯車喝50の中央まで達す
るグロボイド歯70をもつようにすることができる。
Therefore, according to the invention, as shown in FIG. 2, globoid teeth 54 are provided around the entire circumference of the worm gear 14, but in order to avoid the installation difficulties mentioned at the beginning, the globoid teeth 54 are provided in a relatively small circumferential area. The tooth 54 is the worm gear width 50
can be removed almost to the center so that the worm gear 14 on this periphery has globoid teeth 70 that reach the center of the gear wheel 50 only from the side faces 72.

それぞれのウオーム歯車14の小さい周範囲を上述した
ように特別に構成することによって、各ウオーム歯車1
4を上述したように、歯の除去されている側から、あら
かじめ組込まれているウオーム12へかみ合わせること
ができる。
By specially configuring the small circumferential area of each worm gear 14 as described above, each worm gear 1
4 can be engaged into the pre-installed worm 12 from the side where the teeth have been removed, as described above.

しかし組込みの際注意すべきことは、トルクによりウオ
ーム伝動装置lOへ作用する装置(この場合は窓ふき羽
根28)が、小さい力なるべく最小の力しかウオーム伝
動波fllIOへ作用しない位置にあることである。そ
れにより装置によるウオーム伝動装置】0の荷重が大き
い場合、ウオーム12は完全なグロボイド歯54にかみ
合い、そこでは歯の比荷重が著しく低減される。
However, during installation, care must be taken that the device (window cleaning blade 28 in this case) that acts on the worm transmission device lO by torque is located in a position where only a small force, if possible, is applied to the worm transmission wave fllIO. be. As a result, when the load of the worm transmission device [0] is large, the worm 12 meshes with the complete globoid tooth 54, where the specific load of the tooth is significantly reduced.

ウオーム歯車14がプラスチックから作られ、なるべく
射出成形されると、特別な形状70をもつウオーム歯車
14の特に経済的な製造が可能になる。
If the worm gear 14 is made of plastic and preferably injection molded, a particularly economical production of the worm gear 14 with the special shape 70 is possible.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はウオーム伝動装置をもつ自動車の窓ふき装置の
原理的構成図、第2図は第1図のウオーム歯車のII−
II線に沿う歯部分の断面図、第3図は第1図のウオー
ム歯車のIII−III線に沿う断面図である。 10・・・ウオーム伝動装置、】2・・・ウオーム、1
4・・・ウオーム歯車、50・・・ウオーム歯車の幅、
7’O・・・グロボイド歯。
Figure 1 is a basic configuration diagram of an automobile window cleaning device with a worm transmission, and Figure 2 is a diagram of the worm gear shown in Figure 1.
3 is a cross-sectional view of the tooth portion taken along line II, and FIG. 3 is a cross-sectional view of the worm gear of FIG. 1 taken along line III--III. 10...Worm transmission device, ]2...Worm, 1
4... Worm gear, 50... Width of the worm gear,
7'O... Globoid tooth.

Claims (1)

【特許請求の範囲】 1 変化する荷重が常にウォーム歯車の同じ歯範囲に作
用し、ウォーム歯車が凹面歯あるいはグロボイド歯をも
つているものにおいて、ウォーム歯車(14)の歯の荷
重を受ける周範囲のうち小さい荷重を受ける周範囲の歯
(70)が、組込みの際先にウォーム(12)にかみ合
う側からウォーム歯車の幅(50)のほぼ中央まで除去
されていることを特徴とする、周期的に荷重の変化する
ウォーム伝動装置。 2 ウォーム伝動装置(10)が自動車の窓ふき装置の
駆動装置に属し、この駆動装置の後に設けられる揺動伝
動装置(18、20、22)が窓ふき羽根(28)に連
結されていることを特徴とする、特許請求の範囲第1項
に記載のウォーム伝動装置。 3 ウォーム伝動装置(10)のウォーム歯車(14)
の幅(50)のほぼ中央まで歯(70)を除去されてい
る周範囲が、窓ふき羽根(28)の反転位置(42)で
ウォーム(12)にかみ合うことを特徴とする、特許請
求の範囲第2項に記載のウォーム伝動装置。 4 ウォーム歯車(14)がプラスチックから作られて
いることを特徴とする、特許請求の範囲第1項に記載の
ウォーム伝動装置。
[Scope of Claims] 1. A circumferential area where the teeth of the worm gear (14) receive the load, in which a changing load always acts on the same tooth range of the worm gear, and the worm gear has concave teeth or globoid teeth. A period characterized in that the teeth (70) in the circumferential range that receive smaller loads are removed from the side that first meshes with the worm (12) during assembly to approximately the center of the width (50) of the worm gear. A worm transmission device whose load changes over time. 2. The worm transmission (10) belongs to the drive device of the automobile window cleaning device, and the oscillating transmission device (18, 20, 22) provided after this drive device is connected to the window cleaning blade (28). The worm transmission device according to claim 1, characterized in that: 3 Worm gear (14) of worm transmission (10)
According to the patent claim, the circumferential area, which is free of teeth (70) up to approximately the middle of the width (50) of the window blade (28), engages the worm (12) in the reversal position (42) of the window cleaning blade (28). A worm transmission according to scope 2. 4. Worm transmission according to claim 1, characterized in that the worm gear (14) is made of plastic.
JP62256451A 1979-08-29 1987-10-13 Worm gearing, load of which periodically change Granted JPS63266249A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2934874.1 1979-08-29
DE19792934874 DE2934874A1 (en) 1979-08-29 1979-08-29 WORM GEARS FOR PERIODICALLY CHANGING LOAD

Publications (2)

Publication Number Publication Date
JPS63266249A true JPS63266249A (en) 1988-11-02
JPH0240893B2 JPH0240893B2 (en) 1990-09-13

Family

ID=6079551

Family Applications (2)

Application Number Title Priority Date Filing Date
JP11277080A Granted JPS5635837A (en) 1979-08-29 1980-08-18 Worm power transmission periodically varying load
JP62256451A Granted JPS63266249A (en) 1979-08-29 1987-10-13 Worm gearing, load of which periodically change

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP11277080A Granted JPS5635837A (en) 1979-08-29 1980-08-18 Worm power transmission periodically varying load

Country Status (5)

Country Link
JP (2) JPS5635837A (en)
DE (1) DE2934874A1 (en)
FR (1) FR2464412A1 (en)
GB (1) GB2057627B (en)
IT (1) IT1132496B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4425815A (en) * 1980-08-29 1984-01-17 Mastergear Company Limited Wormwheels
US4512292A (en) * 1983-12-19 1985-04-23 Brunswick Corporation Accessory gear drive for a two-cycle engine
DE3429249A1 (en) * 1984-08-08 1986-02-20 Siemens AG, 1000 Berlin und 8000 München GEARBOX ARRANGEMENT, ESPECIALLY WORM GEARBOX ARRANGEMENT
DE4107659A1 (en) * 1991-03-09 1992-09-10 Bosch Gmbh Robert WORM GEAR
JP3103863B2 (en) * 1993-12-27 2000-10-30 株式会社日立製作所 Treatment method for radioactive laundry waste liquid
DE19718213A1 (en) 1997-04-30 1998-11-05 Bosch Gmbh Robert gear
DE19820886A1 (en) * 1998-05-09 1999-11-11 Bosch Gmbh Robert Connecting device joining shaft to disc
CN101115938B (en) * 2005-01-19 2012-07-04 株式会社美姿把 Gear and rolling die for molding the same
DE102010018079A1 (en) 2010-04-22 2011-10-27 Ims Gear Gmbh Shaft with a frontally cast gear and method of making such a shaft
US9651135B2 (en) * 2014-02-14 2017-05-16 Brose Fahrzeugteile Gmbh & Co. Kg, Wuerzburg Gear unit of a motor vehicle actuating drive
DE102014211402A1 (en) * 2014-06-13 2015-12-17 Robert Bosch Gmbh Motor vehicle actuator or wiper drive with a worm gear or Schneckenschraubradgetriebe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812668A (en) * 1955-04-11 1957-11-12 Danielson Mfg Company Composite worm-helical gear construction
US3398590A (en) * 1966-05-31 1968-08-27 Al Craft Mfg Company Side mount operator for awning type windows or the like
JPS499980U (en) * 1972-05-03 1974-01-28
GB1426946A (en) * 1972-06-09 1976-03-03 Ducellier & Cie Means for operating the side-windows in automobile vehicles

Also Published As

Publication number Publication date
JPS6353406B2 (en) 1988-10-24
FR2464412B1 (en) 1984-03-16
IT1132496B (en) 1986-07-02
JPH0240893B2 (en) 1990-09-13
GB2057627A (en) 1981-04-01
GB2057627B (en) 1983-05-18
IT8024323A0 (en) 1980-08-28
FR2464412A1 (en) 1981-03-06
DE2934874A1 (en) 1981-03-19
DE2934874C2 (en) 1988-08-04
JPS5635837A (en) 1981-04-08

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