FR2491837A1 - Vehicle tyre removal press - uses ram actuated clamp to release tyre sidewall from wheel rim - Google Patents

Vehicle tyre removal press - uses ram actuated clamp to release tyre sidewall from wheel rim Download PDF

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Publication number
FR2491837A1
FR2491837A1 FR8021675A FR8021675A FR2491837A1 FR 2491837 A1 FR2491837 A1 FR 2491837A1 FR 8021675 A FR8021675 A FR 8021675A FR 8021675 A FR8021675 A FR 8021675A FR 2491837 A1 FR2491837 A1 FR 2491837A1
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FR
France
Prior art keywords
rim
jaw
tires
adhering
tyre
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
FR8021675A
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French (fr)
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FR2491837B1 (en
Inventor
Jean Henri Marcel Felser
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.)
R Marchal et Cie SAS
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R Marchal et Cie SAS
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Publication date
Application filed by R Marchal et Cie SAS filed Critical R Marchal et Cie SAS
Priority to FR8021675A priority Critical patent/FR2491837B1/en
Publication of FR2491837A1 publication Critical patent/FR2491837A1/en
Application granted granted Critical
Publication of FR2491837B1 publication Critical patent/FR2491837B1/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C25/00Apparatus or tools adapted for mounting, removing or inspecting tyres
    • B60C25/01Apparatus or tools adapted for mounting, removing or inspecting tyres for removing tyres from or mounting tyres on wheels
    • B60C25/02Tyre levers or the like, e.g. hand-held

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

The press for releasing tyres from wheel rims comprises a ram (1) one end of which can be applied against the sidewall of the tyre and a clamp with two parts (3,4) secured to the rim (J) by a nut and bolt (6,8). Before clamping, the two parts can move parallel to the axis of the wheel but during clamping, the outer part is subjected to a force which applies it against the edge of the rim. The bolt extends from the inner part through an oblong hole (9) in the outer part.

Description

La présente invention concerne des perfectionnements aux appareils destinés au décollage des pneumatiques adhérant à la jante. The present invention relates to improvements to devices intended for taking off tires adhering to the rim.

L'état de la technique en la matière est constitué par le certificat d'utilité Français NO 74 08601/ 2.263 665 déposé le 8 Mars 1974 qui décrit un appareil comportant une pince, destinée à être fixée sur la jante,dont un des mors supporte un vérin dont l'extrémité de la tige du piston, judicieusement conformée,peut exercer une pression sur le flanc du pneumatique pour le décoller de la jante. The state of the art in this area is constituted by the French utility certificate NO 74 08601 / 2.263 665 deposited on March 8, 1974 which describes a device comprising a clamp, intended to be fixed on the rim, of which one of the jaws supports a jack whose judiciously shaped end of the piston rod can exert pressure on the sidewall of the tire to detach it from the rim.

Les deux mors de la pince sont conformés pour épouser le profil de la jante ; l'un des mors, ou mors extérieur, affecte une section en forme d'équerre et prend appui sous la jante contre l'angle formé par le rebord de la jante et la jante proprement dite tandis que l'autre, ou mors intérieur, affecte la forme dlune languette recourbée qui est insérée entre le rebord de ladite jante et le talon du pneumatique,des moyens étant prévus pour serrer les mors contre la jante.A cet effet, le corps du mors intérieur présente un axe fileté traversant le corps du mors extérieur pour recevoir un écrou, le trou de passage de ladite tige étant évasé pour permettre un pivotement du mors intérieur par rapport à celui extérieur afin de tenir compte du profil du rebord de la jante. The two jaws of the clamp are shaped to match the profile of the rim; one of the jaws, or outer jaw, affects a square-shaped section and bears under the rim against the angle formed by the rim flange and the rim itself while the other, or inner jaw, affects the shape of a curved tongue which is inserted between the rim of said rim and the bead of the tire, means being provided for clamping the jaws against the rim. To this end, the body of the inner jaw has a threaded axis passing through the body of the body outer jaw to receive a nut, the passage hole of said rod being flared to allow the inner jaw to pivot relative to the outer one in order to take account of the profile of the rim flange.

Cet appareil ne donne pas toute satisfaction car il est difficilement adaptable aux jantes dissymétriques c'est-à-dire à celles dont la distance séparant les faces interne et externe du rebord de la jante est différente selon le côté de la roue. De ce fait, cet appareil ne peut convenir,notamment, aux jantes démontables dont la dissymétrie est très accentuée.. This device is not entirely satisfactory because it is difficult to adapt to asymmetrical rims, that is to say those whose distance between the inner and outer faces of the rim flange is different depending on the side of the wheel. Therefore, this device can not be suitable, in particular, removable rims whose asymmetry is very accentuated.

Par ailleurs, l'expérience a montré qu'il était nécessaire pour assurer une bonne fixation que le mors extérieur soit parfaitement appliqué contre la jante.  Furthermore, experience has shown that it was necessary to ensure good fixing that the outer jaw was perfectly applied against the rim.

La présente invention, qui-remédie à ces inconvénients,est remarquable en ce que des moyens sont prévus pour permettre un libre déplacement des deux mors selon une direction parallèle à l'axe de la jante et pour soumettre le mors extérieur à une force qui tend à le déplacer selon cette direction pour l'appliquer contre ladite jante. The present invention, which overcomes these drawbacks, is remarkable in that means are provided to allow free movement of the two jaws in a direction parallel to the axis of the rim and to subject the outer jaw to a force which tends to move it in this direction to apply it against said rim.

L'invention.sera mieux comprise par la description qui va suivre faite en se référant au dessin annexé à titre d'exemple indicatif seulement,sur lequel
La figure 1 est une vue en coupe montrant l'appreil engagé sur une jante
La figure 2 est une vue analogue à celle 1 montrant appareil fixé sur une åante;
Les figures 3 et 4 sont des vues analogues à celles 1 et 2 montrant l'utilisation de l'appareil sur une jante démontable;
La figure 5 est une vue de dessus de la figure 1;
La figure 6 est une vue en perspective du mors extérieur.
The invention will be better understood from the description which follows made with reference to the attached drawing by way of indicative example only, in which
Figure 1 is a sectional view showing the device engaged on a rim
Figure 2 is a view similar to that 1 showing apparatus attached to a åante;
Figures 3 and 4 are views similar to those 1 and 2 showing the use of the device on a removable rim;
Figure 5 is a top view of Figure 1;
Figure 6 is a perspective view of the outer jaw.

En se reportant au dessin, on voit que le problème à résoudre consiste à décoller le talon g d'un pneumatique P d'une jante J. Referring to the drawing, it can be seen that the problem to be solved consists in taking off the bead g of a tire P from a rim J.

De la façon connue, ce résultat est obtenu à 11 aide d'un vérin dont le cylindre 1 est fixé à une pince et dont la tige 2 du piston repousse le flanc du pneumatique lors de ltextension de ladite tige. In known manner, this result is obtained using a jack, the cylinder 1 of which is fixed to a clamp and the piston rod 2 of which pushes the sidewall of the tire when the said rod is stretched.

Le cylindre 1 est rendu solidaire de la pince qui est constituée par deux mors 3 et 4 respectivement intérieur et extérieur. The cylinder 1 is made integral with the clamp which is constituted by two jaws 3 and 4 respectively inside and outside.

Comme montré sur le dessin, le cylindre 1 est articulé sur le corps 5 du mors 3. As shown in the drawing, the cylinder 1 is articulated on the body 5 of the jaw 3.

Le mors 3, qui affecte la forme d'une languette émoussée et recourbée, s'insère entre le rebord de la jante et le talon du pneumatique tandis que celui 4 prend appui extérieurement contre l'angle formé par la jante et son rebord.  The jaw 3, which takes the form of a blunt and curved tongue, is inserted between the rim of the rim and the bead of the tire while that 4 bears externally against the angle formed by the rim and its rim.

Pour fixer la pince on exerce entre les deux mors une force tendant à les rapporcher l'un de l'autre et, à cet effet, le mors 3 présente une tige filetée 6 qui traverse le corps 7 du mors 4 pour recevoir un écrou 8. To fix the clamp, a force is applied between the two jaws tending to bring them closer to each other and, for this purpose, the jaw 3 has a threaded rod 6 which passes through the body 7 of the jaw 4 to receive a nut 8 .

Selon llinvention, la tige 6 traverse le mors 4 par ltentremise d'un trou 9 oblong ce qui permet au mors 3 de se déplacer par rapport à celui 4 selon une direction sensiblement parallèle à l'axe de la jante.Ce mouvement est nécessaire pour permettre d'utiliser l'appareil sur toutes les jantes connues et cette possibilité ressort tout particulièrement des figures 1 à 4 dans lesquelles on voit que la distance séparant la face interne et celle externe du rebord de la jante est relativement faible sur la jante des figures 1 et 2 alors qu'elle est plus importante sur celle des figures 3 et 4. According to the invention, the rod 6 crosses the jaw 4 through an oblong hole 9 which allows the jaw 3 to move relative to that 4 in a direction substantially parallel to the axis of the rim. This movement is necessary to allow the device to be used on all known rims, and this possibility is particularly apparent in FIGS. 1 to 4 in which it can be seen that the distance separating the internal face and that external from the rim flange is relatively small on the rim of the figures 1 and 2 whereas it is more important in that of FIGS. 3 and 4.

Les appareils connus présentent aussi une lumière légèrement oblongue dont la longueur croit vers la face du corps opposée à l'écrou. Les dimensions de cette lumière étaient suffisantes pour permettre un pivotement du mo!rs intérieur mais insuffisantes pour permettre un déplacement substantiel dudit mors selon une direction sensiblement parallèle à l'axe de la jante. Known devices also have a slightly oblong lumen whose length increases towards the face of the body opposite the nut. The dimensions of this light were sufficient to allow pivoting of the inner mo! Rs but insufficient to allow a substantial displacement of said jaw in a direction substantially parallel to the axis of the rim.

De la façon connue, 1 1écrou 8 présente une surface d'appui 10 hémisphérique et on interpose entre l'écrou 8 et le corps 7 du mors 4 une rondelle 11 dont une face est concave pour coopérer avec la surface d'appui hémisphérique de l'écrou. In known manner, 1 nut 1 has a hemispherical bearing surface 10 and a washer 11 is interposed between nut 8 and body 7 of jaw 4, one face of which is concave in order to cooperate with the hemispherical bearing surface of l 'nut.

Selon une autre caractéristique de l'inven- tion, le corps 7 du mors 4 présente, à l'opposé de celui-ci, un bec 12 qui est en contact avec un talon 13,formant rampe,du corps du mors 3. According to another characteristic of the invention, the body 7 of the jaw 4 has, opposite to it, a spout 12 which is in contact with a heel 13, forming a ramp, of the body of the jaw 3.

En actionnant l'écrou 8 dans le sens du serrage, le mors 3 pivote vers la jante en s'insérant plus profondément entre le rebord de la jante et le talon du pneumatique et,compte tenu de sa forme et de celle dudit rebord, tend à se déplacer selon la flèche F. By actuating the nut 8 in the tightening direction, the jaw 3 pivots towards the rim by being inserted more deeply between the rim flange and the tire bead and, taking into account its shape and that of said flange, tends to move according to arrow F.

En raison de ce déplacement, le talon 13 prend appui sur le bec 12 et tend à déplacer le mors 4 dans la même direction pour l'appliquer contre la jante ( gure 2).Because of this movement, the heel 13 bears on the spout 12 and tends to move the jaw 4 in the same direction to apply it against the rim (gure 2).

Selon un mode de réalisation, le talon 13 est constitué par une surface plane oblique. According to one embodiment, the heel 13 is constituted by an oblique flat surface.

Bien entendu la présente invention ne se limite pas au mode de réalisation décrit et représenté mais s'étend, au contraire, à toutes variantes de formes et dimensions.  Of course the present invention is not limited to the embodiment described and shown but extends, on the contrary, to all variants of shapes and dimensions.

Claims (4)

REVENDICATIONS 1- Perfectionnements aux appareils destinés au 1- Improvements to devices intended for décollage des pneumatiques adhérant à la jante du genre take-off of tires adhering to the rim of the genre de ceux constitués par une pince, à deux mors pouvant of those formed by pliers, with two jaws which can être fixée sur la jante par l'entremise d'un dispositif be fixed to the rim by means of a device à vis et écrou et portant un vérin dont l'extrémité with screw and nut and carrying a jack whose end de la tige du piston peut être appliquée contre le flanc du pneumatique, caractérisés en ce que des moyens sont prévus pour permettre,avant fixation,un libre déplacement des deux mors(3-4) selon une direction sensiblement parallèle à l'axe de la jante et pour soumettre le mors extérieur (4) à une force qui tend à le déplacer selon cette direction pour l'appliquer contre le rebord de ladite of the piston rod can be applied against the sidewall of the tire, characterized in that means are provided to allow, before fixing, a free movement of the two jaws (3-4) in a direction substantially parallel to the axis of the rim and to subject the outer jaw (4) to a force which tends to move it in this direction to apply it against the edge of said jante durant le serrage. rim during tightening. 2- Perfectionnements aux appareils destinés au 2- Improvements to devices intended for décollage des pneumatiques adhérant à la jante selon take-off of the tires adhering to the rim according to la revendication 1, caractérisés en ce que la tige claim 1, characterized in that the rod filetée (6) rendue solidaire du mors intérieur (3) threaded (6) secured to the inner jaw (3) traverse le corps du mors extérieur (4) par l'entremise d'un trou oblong (9). passes through the body of the outer jaw (4) through an oblong hole (9). 3- Perfectionnements aux appareils destinés au décollage des pneumatiques adhérant à la jante selon l'une quelconque des revendications l et 2, caractérisés 3- Improvements to apparatuses intended for taking off tires adhering to the rim according to any one of claims l and 2, characterized en ce que le corps (5) du mors intérieur (3) présente un talon (13).formant rampe prenant appui contre un bec(12) du mors extérieur (4). in that the body (5) of the inner jaw (3) has a heel (13). forming a ramp bearing against a spout (12) of the outer jaw (4). 4- Perfectionnements aux appareils destinés au décollage des pneumatiques adhérant à la jante selon la revendication 3, caractérisés en ce que le talon (13) est constitué par une surface oblique plane.  4- Improvements to the devices intended for taking off the tires adhering to the rim according to claim 3, characterized in that the bead (13) is constituted by a flat oblique surface.
FR8021675A 1980-10-10 1980-10-10 IMPROVEMENTS IN APPARATUS FOR TAKING OFF TIRES ADHERING TO THE RIM Expired FR2491837B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8021675A FR2491837B1 (en) 1980-10-10 1980-10-10 IMPROVEMENTS IN APPARATUS FOR TAKING OFF TIRES ADHERING TO THE RIM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8021675A FR2491837B1 (en) 1980-10-10 1980-10-10 IMPROVEMENTS IN APPARATUS FOR TAKING OFF TIRES ADHERING TO THE RIM

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FR2491837A1 true FR2491837A1 (en) 1982-04-16
FR2491837B1 FR2491837B1 (en) 1987-03-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310844A1 (en) * 1987-10-05 1989-04-12 Ejner Pedersen Apparatus for mounting and dismounting of tyres
WO1999034992A1 (en) * 1998-01-08 1999-07-15 Fintan Mcwall A tyre bead breaking device
WO2001025035A1 (en) * 1999-10-01 2001-04-12 Klinge Holdings Pty Ltd A clamping apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1452596A (en) * 1921-09-10 1923-04-24 Fernelmont Leon De Tire tool
US1475518A (en) * 1923-01-18 1923-11-27 Clint B Snider Tire-removing tool
FR1058360A (en) * 1954-03-16
FR2263665A7 (en) * 1974-03-08 1975-10-03 Felser Jean Tool removing tyre beads from mounted wheel rims - has foot forced between rim and bead by nut
DE2521085A1 (en) * 1975-05-12 1976-11-25 Ivan Peter Konen Portable tyre removing jig - with double claws driven into wheel well and powered by two orthogonal hydraulic rams

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1058360A (en) * 1954-03-16
US1452596A (en) * 1921-09-10 1923-04-24 Fernelmont Leon De Tire tool
US1475518A (en) * 1923-01-18 1923-11-27 Clint B Snider Tire-removing tool
FR2263665A7 (en) * 1974-03-08 1975-10-03 Felser Jean Tool removing tyre beads from mounted wheel rims - has foot forced between rim and bead by nut
DE2521085A1 (en) * 1975-05-12 1976-11-25 Ivan Peter Konen Portable tyre removing jig - with double claws driven into wheel well and powered by two orthogonal hydraulic rams

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310844A1 (en) * 1987-10-05 1989-04-12 Ejner Pedersen Apparatus for mounting and dismounting of tyres
WO1999034992A1 (en) * 1998-01-08 1999-07-15 Fintan Mcwall A tyre bead breaking device
WO2001025035A1 (en) * 1999-10-01 2001-04-12 Klinge Holdings Pty Ltd A clamping apparatus

Also Published As

Publication number Publication date
FR2491837B1 (en) 1987-03-06

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