DE2539770A1 - Mechanical servo for clutch or brakes - with elliptical cam and pivoted sprung lever producing high force over small range - Google Patents

Mechanical servo for clutch or brakes - with elliptical cam and pivoted sprung lever producing high force over small range

Info

Publication number
DE2539770A1
DE2539770A1 DE19752539770 DE2539770A DE2539770A1 DE 2539770 A1 DE2539770 A1 DE 2539770A1 DE 19752539770 DE19752539770 DE 19752539770 DE 2539770 A DE2539770 A DE 2539770A DE 2539770 A1 DE2539770 A1 DE 2539770A1
Authority
DE
Germany
Prior art keywords
brakes
roller
servo
pivoted
elliptical cam
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
DE19752539770
Other languages
German (de)
Inventor
Hermann Hallmann
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.)
HALLMANN GEB PAUL GISELA
Original Assignee
HALLMANN GEB PAUL GISELA
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 HALLMANN GEB PAUL GISELA filed Critical HALLMANN GEB PAUL GISELA
Priority to DE19752539770 priority Critical patent/DE2539770A1/en
Publication of DE2539770A1 publication Critical patent/DE2539770A1/en
Pending 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
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/02Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with mechanical assistance or drive
    • B60T13/04Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with mechanical assistance or drive by spring or weight
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00Brake-action initiating means
    • B60T7/02Brake-action initiating means for personal initiation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Braking Arrangements (AREA)

Abstract

The mechanical servo provides a controlled, large servo force over a small stroke, so that the brakes and clutch control are eased. A pivotted cylinder (1) is mounted about a fixed point (6) and has an internal captive spring ( 2). This presses a cam wheel (3) onto an elliptical cam (11) about the point. The elliptical cam presses onto the servo rod (8) to generate small strokes at large forces. The pivot action of the cylinder is operated with a small force at a larger stroke. The servo is simple and compact and is easily fitted to conventional car controls.

Description

VORRICHTUNG zum LÖSEN von DEVICE FOR RELEASING

KUPPLUNGEN oder BREMSEN an KRAFTFAhrzeugen. CLUTCHES or BRAKES on MOTOR VEHICLES.

Die Erfindung bezieht sich auf eine unter Federdruck stehende Vorrichtung, die zum Lösen von Kupplungen oder Bremsen an Kraftfahrzeugen oder umgekehrt auch als Bremskraftverstärker verwendbar ist. Sowohl beim Kuppeln als auch beim Bremsen oder Lösen voll Bremsen muß eine Verschiebung der ineinander greifenden Teile erfolgen, wobei das Ausmaß der Verschiebung nur gerilig zu sein braucht. Indessen erfordert diese Verschiebung erheblich Kräfte, die bisher durch entsprechend aufwendige Hebelübersetzung oder auf hydraulischem Wege aufgebracht werden mussten.The invention relates to a spring-loaded device, those for releasing clutches or brakes on motor vehicles or vice versa can be used as a brake booster. Both when coupling and when braking or fully releasing the brakes, the interlocking parts must be shifted, the extent of the shift need only be reasonable. However, required this shift significantly forces that previously by correspondingly complex leverage or had to be applied hydraulically.

Die Erfindung hat sich die Aufgabe gestellt, unter Aufwendung möglichst geringer Kräfte eine völlig sichere begrenzte Verschiebung der ineinander greifenden Teile von Bremsen oder Kupplungen zu erreichen, ohne daß hierfür besondere Webel -übertragung oder hydraulische Einrichtungen erforderlich sind.The invention has set itself the task of using as much as possible low forces a completely safe limited displacement of the interlocking To achieve parts of brakes or clutches without the need for a special webel transmission or hydraulic facilities are required.

Gemäß der Erfindung ist die zum Verschieben der ineinander greifenden Teile von Kupplungen oder Bremsen bestimmte Vor -richtung d a d u r c h g e k e n n z e i c h n e t, daß eine in Ruhelage durch ein Widerlager unter Druck gehaltene Feder um eine festste -hende Achse verschwenkbar ist, während auf einer verschieb -baren Welle ein Druckbolzen und eine Walze sitzen, auf deren Umfang das bewegliche Ende der Druckfeder beim Verschwenken unter geringer Entspannung entlangzugleiten vermag. Nach einer Ausführungsform der Erfindung stützt sich das freie Ende der Druckfeder gegen einen Schlitten ab, der eine Rolle trägt, die auf der Walze gleitet.According to the invention is to move the interlocking Parts of clutches or brakes specific device d a d u r g e k e k e n n n z e i c h n e t that one held in rest position by an abutment under pressure Spring can be pivoted about a fixed axis, while moving on one -bar shaft a pressure bolt and a roller sit on the circumference of the movable Slide along the end of the compression spring when pivoting with little relaxation able. According to one embodiment of the invention, the free end of the is supported Compression spring against a carriage that carries a roller that slides on the roller.

Die beiliegenden Zeichnungen veranschaulichen eine Ausführungsform der Erfindung.The accompanying drawings illustrate an embodiment the invention.

Fig. 1 zeigt die Vorrichtung schematisch in der Ruhelage im Schnitt; Fig. 2 zeigt die gleiche Vorrichtung in Arbeitsstellung.Fig. 1 shows the device schematically in the rest position in section; Fig. 2 shows the same device in the working position.

In einem Federgehäuse 1 sitzt eine Druckfeder 9, deren oberes Ende am Gehäuse befestigt ist, während das untere Ende sich gegen einen im Federgehäuse 1 verschiebbaren Schlitten 10 abstützt, der eine Rolle trägt, die an einer Walze 11 anliegt. Der Schlitten 10 stiitzt sich sei.nerseits in der Ruhelage gegen ein festes Widerlager 9 ab. Das Federgehäuse 1 ist um ein feststehendes Lager 5 um etwa 90° schlfenkhar .In a spring housing 1 sits a compression spring 9, the upper end of which is attached to the housing, while the lower end is against one in the spring housing 1 slidable carriage 10 is supported, which carries a role on a roller 11 is present. The slide 10 is braced against itself on the inside in the rest position fixed abutment 9 from. The spring housing 1 is around a fixed bearing 5 by about 90 ° schlfenkhar.

Die Walze 11 sitzt auf einer Welle 6, die um einen geringen Betrag seitlich verschiebbar ist, wie dies Fig.2 erkennen läßt. Auf dieser verschiebbaren Welle 6 sitzt gleichzeitig ein Druckbolzen 8, der in einem Lager 7 ebenfalls verschiebbar ist.The roller 11 sits on a shaft 6, which by a small amount is laterally displaceable, as can be seen in FIG. On this sliding Shaft 6 sits at the same time a pressure pin 8, which is also displaceable in a bearing 7 is.

Beim Verschwenken des Federgehäuses l gibt das Widerlager 9 den Schlitten 10 frei. Dadurch kann die Rolle 3 nunmehr auf die Walze 11 einen durch die Feder 2 hervorgerufenen Druck ausüben, der eine Verschiebung der Walze 11 mitsamt dem Druckbolzen 8 nach linls bewirkt. Der Druck wird offensichtlich umso stärker, je weiter das Federgehäuse 1 in die waagerechte Lage verschwenkt wird. Durch Änderung des Schwenkwin -kels läßt sich also die Stärke des auf die Walze 11 und damit den Druckbolzen 8 ausgeübten Verschiebungsdrucks beliebig regulieren. Der am unteren Ende des Federgehäuses l vorhan -dene Anschlag 4 fiir den Schlitten 10 läßt dabei nur eine begrenzte Entspannung der Feder 2 und damit nur eine verhältnismäßig geringe Verschiebung der Walze 11 und des Bolzens 8 zu, die für den angegebenen Zweck jedoch völlig genügt.When the spring housing l is pivoted, the abutment 9 is the slide 10 free. As a result, the roller 3 can now be pushed onto the roller 11 by the spring 2 caused pressure exert a displacement of the roller 11 together with the Pressure pin 8 caused by linls. The pressure obviously gets stronger the more further the spring housing 1 is pivoted into the horizontal position. By change of the pivot angle can therefore be the strength of the roller 11 and thus the Regulate the pressure bolt 8 exerted displacement pressure as required. The one at the bottom The end of the spring housing 1 leaves the stop 4 for the carriage 10 present only a limited relaxation of the spring 2 and thus only a relatively small amount Displacement of the roller 11 and the bolt 8 to, which for the specified purpose, however completely sufficient.

Wird die Einrichtung etwa zum Lösen einer Kraftfahrzeug -kupplung benutzt, so wirken die Druckkräfte der Kupplungs -federn als Riickstellhilfe gegen den Druck der Feder 2. Um die Einrichtung in die Ausgangsstellung zurückzubringen, sind also nur verhältnismäßig geringe Differenzkräfte zwischen dem Rückstelldruck der Kupplungsfedern und dem Druck der Feder 2 zu überwinden. Das Rückschwenken des Federgehäuses l in die Ausgangslage kann leicht durch ein einfaches Hebel -gestänge erfolgen.If the device is used, for example, to release a motor vehicle clutch is used, the pressure forces of the clutch springs counteract this as a restoring aid the pressure of spring 2. To return the device to its original position, are therefore only relatively small differential forces between the return pressure the clutch springs and the pressure of the spring 2 to overcome. Pivoting the Spring housing l can easily be returned to its starting position by means of a simple lever linkage take place.

Nach einer besonderen Ausführungsform der Erfindung kann die Walze 11 elliptisch geformt sein, wobei der Driich -messer in waagerechter Richtung größer als in senkrechter Richtung ist. In diesem Fall findet beinl Verschwenken des Federgehäuses keine änderung der Federspannung statt.Eine Verschiebung des Schlittens 10 im Gehäuse l ist dann unnötig.According to a particular embodiment of the invention, the roller 11 be elliptical in shape, with the drilling knife larger in the horizontal direction than is in the vertical direction. In this case, the spring housing is pivoted there is no change in the spring tension. A displacement of the slide 10 in the housing l is then unnecessary.

L e e r s e i t eL e r s e i t e

Claims (2)

P A T E N T A N S P R Ü C H E 1. Vorrichtung zum Lösen von Kupplungen oder Bremsen an Kraftfahrzeugen, d a d u r c h g ek e n n z e i c h n e t, daß eine in der Ruhelage durch ein Widerlager (9) unter Spannung gehaltene Durckfeder (2) um eine feststehende Achse (5) verschwenkbar ist, währen auf einer verschiebbaren Welle (t) ein Druckbolzen (8) und eine Walze (11) sitzen, auf deren Umfang das bewegliche Ende der Feder (2) beim Verschwenken unter geringer Entspannung entlangzugleiten vermag. P A T E N T A N S P R Ü C H E 1. Device for releasing couplings or braking on motor vehicles, d u r c h ek e n n n n e i c h n e t that a in the rest position held under tension by an abutment (9) pressure spring (2) is pivotable about a fixed axis (5), while on a displaceable Shaft (t) a pressure pin (8) and a roller (11) sit, on the circumference of which the movable Slide along the end of the spring (2) when pivoting with a little relaxation able. 2. Vorrichtung nach Anspruch 1., d a d u r c h g elçelmzeichilet, daß das freie Ende der Druck feder (2) sich gegen einen Schlitten (10) abstiitzt, der eine Rolle (9) trat, de auf der Walze (11) gleitet. 2. Device according to claim 1, d a d u r c h g elçelmzeichilet, that the free end of the compression spring (2) is supported against a slide (10), who entered a roller (9), de slides on the roller (11). Abänderung der Vorrichtung nach Anspruch 2. Modification of the device according to claim 2. dadurch gekennzeichnet1 daß die Walze (11) eine exzentrische, vorzugsweise elliptische Form hat, wobei die waagerechte Achse langer ist als die senkrecllte. characterized in that the roller (11) is an eccentric, preferably elliptical in shape, with the horizontal axis longer than the vertical axis.
DE19752539770 1975-09-06 1975-09-06 Mechanical servo for clutch or brakes - with elliptical cam and pivoted sprung lever producing high force over small range Pending DE2539770A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752539770 DE2539770A1 (en) 1975-09-06 1975-09-06 Mechanical servo for clutch or brakes - with elliptical cam and pivoted sprung lever producing high force over small range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752539770 DE2539770A1 (en) 1975-09-06 1975-09-06 Mechanical servo for clutch or brakes - with elliptical cam and pivoted sprung lever producing high force over small range

Publications (1)

Publication Number Publication Date
DE2539770A1 true DE2539770A1 (en) 1977-03-24

Family

ID=5955816

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752539770 Pending DE2539770A1 (en) 1975-09-06 1975-09-06 Mechanical servo for clutch or brakes - with elliptical cam and pivoted sprung lever producing high force over small range

Country Status (1)

Country Link
DE (1) DE2539770A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000053945A1 (en) * 1999-03-08 2000-09-14 Valeo Control device for coupling means with variable operating force moderation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000053945A1 (en) * 1999-03-08 2000-09-14 Valeo Control device for coupling means with variable operating force moderation
FR2790806A1 (en) * 1999-03-08 2000-09-15 Valeo CONTROL DEVICE FOR COUPLING MEANS WITH VARIABLE EFFORT MODERATION

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