FR2500560A1 - Sliding crank drive transmission - has slot in connecting rod to vary lever ratio during working and return strokes - Google Patents

Sliding crank drive transmission - has slot in connecting rod to vary lever ratio during working and return strokes Download PDF

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Publication number
FR2500560A1
FR2500560A1 FR8103706A FR8103706A FR2500560A1 FR 2500560 A1 FR2500560 A1 FR 2500560A1 FR 8103706 A FR8103706 A FR 8103706A FR 8103706 A FR8103706 A FR 8103706A FR 2500560 A1 FR2500560 A1 FR 2500560A1
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FR
France
Prior art keywords
vary
slot
connecting rod
drive transmission
lever
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
FR8103706A
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French (fr)
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FR2500560B1 (en
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.)
URIAC JEAN
Original Assignee
URIAC JEAN
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 URIAC JEAN filed Critical URIAC JEAN
Priority to FR8103706A priority Critical patent/FR2500560A1/en
Publication of FR2500560A1 publication Critical patent/FR2500560A1/en
Application granted granted Critical
Publication of FR2500560B1 publication Critical patent/FR2500560B1/fr
Granted legal-status Critical Current

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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
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/40—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and oscillating motion

Abstract

The drive consists of a flywheel (1) with a crank (2) and a lever (4). The lever is pivoted about a fixed point between its two ends and engages with the crank (2) along a slotted hole (3). As the flywheel rotates, the end of the lever oscillates. The mechanism provides a slow working stroke and a rapid return stroke. At the same time the force (F) exerted during the working stroke is greater than that during the return.

Description

La présente invention concerne les systèmes utilisant les mouvements alternatifs ayant une phase positive, c'est à dire utile, forte et une phase négative faible. The present invention relates to systems using alternative movements having a positive phase, that is to say useful, strong and a weak negative phase.

Si nous-considérons des systèmes de ce genre, nous voyons que nous utilisons la même force, que ce soit pour la phase positive ou pour la phase négative. If we consider systems of this kind, we see that we use the same force, whether for the positive phase or for the negative phase.

Le dispositif selon l'invention permet d'éviter cet inconvénient et d'obtenir une force maximum supérieure avec un temps plus long sur la phase positive, donc utile, et un temps plus court avec force minimum pour la phase négative. The device according to the invention makes it possible to avoid this drawback and to obtain a higher maximum force with a longer time on the positive phase, therefore useful, and a shorter time with minimum force for the negative phase.

Le dispositif, objet de l'invention, comprend un moteur entrainant d'un mouvement lent un volant solidaire d'un vilebrequin dont le maneton coulisse sur un levier, afin d'augmenter le rapport des longueurs sur ce dernier,donc d'avoir une force plus élevée à l'autre extrémité. The device, object of the invention, comprises a motor causing a slow movement of a flywheel integral with a crankshaft whose crankpin slides on a lever, in order to increase the length ratio on the latter, therefore to have a higher force at the other end.

Les dessins annexés permettent de comprendre le fonctionnement d'un système de ce genre. The accompanying drawings make it possible to understand the operation of a system of this kind.

Prenons une droite MOB (fig.1) ayant le point O fixe et le point B dg- crivant l'arc d'un cercle ayant pour origine 0'. Nous voyons que le rapport
devient Fg puisque le point M décrit un arc de cercle ayant comme origine
O. Si nous appliquons une force F tangente au cercle de centre O' le rapport
OB ayant augmenté pour devenir OB', la force F' est supérieure à F au point F
OM
Si nous appliquons ce système à un villebrequin (fig.2) et que nous prenons MO = AB' = 20A nous voyons que MM" est égal à AB' donc au diamètre décri par le vilebrequin et que la force obtenue en M, M', M" est démontrée par la courbe (fig.3). Ce qui nous permet de voir que dans la phase utile nous avons une force supérieure à la force motrice, avec un temps plus long et dans la phase négative une force minimum avec un temps plus court.Let us take a straight line MOB (fig. 1) having the point O fixed and the point B describing the arc of a circle originating from 0 '. We see that the report
becomes Fg since point M describes an arc having a origin
O. If we apply a force F tangent to the circle of center O 'the ratio
OB having increased to become OB ', the force F' is greater than F at point F
OM
If we apply this system to a villebrequin (fig.2) and we take MO = AB '= 20A we see that MM "is equal to AB' therefore to the diameter described by the crankshaft and that the force obtained in M, M ' , M "is demonstrated by the curve (fig.3). This allows us to see that in the useful phase we have a force greater than the driving force, with a longer time and in the negative phase a minimum force with a shorter time.

Cette dernière ayant une intensité suffisante pour permettre le retour au point initial du système et avoir assez d'inertie sur le volant pour le passage du point de force minimum dans la phase utile. The latter having a sufficient intensity to allow the return to the initial point of the system and to have enough inertia on the steering wheel for the passage of the point of minimum force in the useful phase.

Le dispositif, objet de l'invention, peut être utilisé dans tous les
cas où l'on désire un mouvement alternatif ayant une phase positive forte de
vitesse lente et une phase négative faible de vitesse rapide.The device, object of the invention, can be used in all
case where one wishes an alternative movement having a strong positive phase of
slow speed and a weak negative phase of fast speed.

Ce système peut donc être utilisé en mécanique pour des matériels tels que étau ~limeur, scie ou pompe alternative.  This system can therefore be used in mechanics for materials such as vise ~ file, saw or reciprocating pump.

Claims (2)

REVENDICATIONS 1 - Dispositif mécanique associé à un vilebrequin (2) entraîné par un moteur pour obtenir un mouvement alternatif à rendement élevé.1 - Mechanical device associated with a crankshaft (2) driven by an engine to obtain a reciprocating movement with high efficiency. 2 - Dispositif selon 1a revendication li caractérisé en ce que le moyen d'obtenir un mouvement alternatif est un levier (4) 3 - Dispositif mécanique selon la revendication 2, caractérisé en ce que le moyen utilise pour obtenir une force utile supérieure à la force motrice est, ici, une lumière i3j permettant d augmenter le rapport des longueurs sur le levier (4). 2 - Device according to claim 1a characterized in that the means for obtaining an alternating movement is a lever (4) 3 - Mechanical device according to claim 2, characterized in that the means uses to obtain a useful force greater than the force driving is here a light i3j to increase the length ratio on the lever (4).
FR8103706A 1981-02-23 1981-02-23 Sliding crank drive transmission - has slot in connecting rod to vary lever ratio during working and return strokes Granted FR2500560A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8103706A FR2500560A1 (en) 1981-02-23 1981-02-23 Sliding crank drive transmission - has slot in connecting rod to vary lever ratio during working and return strokes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8103706A FR2500560A1 (en) 1981-02-23 1981-02-23 Sliding crank drive transmission - has slot in connecting rod to vary lever ratio during working and return strokes

Publications (2)

Publication Number Publication Date
FR2500560A1 true FR2500560A1 (en) 1982-08-27
FR2500560B1 FR2500560B1 (en) 1984-07-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8103706A Granted FR2500560A1 (en) 1981-02-23 1981-02-23 Sliding crank drive transmission - has slot in connecting rod to vary lever ratio during working and return strokes

Country Status (1)

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FR (1) FR2500560A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122226A1 (en) * 1983-03-10 1984-10-17 GRETAG Aktiengesellschaft Turning device
JP2005526629A (en) * 2002-05-24 2005-09-08 コンセホ・スペリオール・デ・インベスティガシオネス・シエンティフィカス Actuator for working member, especially for walking robot, and control method of actuator
CN100430627C (en) * 2006-12-14 2008-11-05 吴应昌 Lever booster
WO2011045670A1 (en) * 2009-10-16 2011-04-21 Yoshio Niioka Motor horse power amplification devices using a moment arm design
JP2011085254A (en) * 2009-10-16 2011-04-28 Saitekkusu Kenkyusho:Kk Method of manufacturing output amplification device constituting moment arm
DE102010005526A1 (en) * 2010-01-23 2011-07-28 FESTO AG & Co. KG, 73734 Rotary drive device for use with process valve, has drive pivotal arm in entrainment engagement with output pivotal arm, where force is exerted on output pivotal arm and simultaneously movement is executed transverse to pivotal direction

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1655151A (en) * 1925-08-22 1928-01-03 Challenge Company Machine for converting rotary into reciprocating motion

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1655151A (en) * 1925-08-22 1928-01-03 Challenge Company Machine for converting rotary into reciprocating motion

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122226A1 (en) * 1983-03-10 1984-10-17 GRETAG Aktiengesellschaft Turning device
US4552029A (en) * 1983-03-10 1985-11-12 Gretag Aktiengesellschaft Pivoting device
JP2005526629A (en) * 2002-05-24 2005-09-08 コンセホ・スペリオール・デ・インベスティガシオネス・シエンティフィカス Actuator for working member, especially for walking robot, and control method of actuator
US7341122B2 (en) 2002-05-24 2008-03-11 Consejo Superior De Investigaciones Cientificas Actuator for a working element, particularly a walking robot and the method of controlling said actuator
CN100430627C (en) * 2006-12-14 2008-11-05 吴应昌 Lever booster
WO2011045670A1 (en) * 2009-10-16 2011-04-21 Yoshio Niioka Motor horse power amplification devices using a moment arm design
JP2011085254A (en) * 2009-10-16 2011-04-28 Saitekkusu Kenkyusho:Kk Method of manufacturing output amplification device constituting moment arm
DE102010005526A1 (en) * 2010-01-23 2011-07-28 FESTO AG & Co. KG, 73734 Rotary drive device for use with process valve, has drive pivotal arm in entrainment engagement with output pivotal arm, where force is exerted on output pivotal arm and simultaneously movement is executed transverse to pivotal direction

Also Published As

Publication number Publication date
FR2500560B1 (en) 1984-07-13

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