FR2554526A1 - Rotary member with interchangeable attached peripheral elements. - Google Patents

Rotary member with interchangeable attached peripheral elements. Download PDF

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Publication number
FR2554526A1
FR2554526A1 FR8317452A FR8317452A FR2554526A1 FR 2554526 A1 FR2554526 A1 FR 2554526A1 FR 8317452 A FR8317452 A FR 8317452A FR 8317452 A FR8317452 A FR 8317452A FR 2554526 A1 FR2554526 A1 FR 2554526A1
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France
Prior art keywords
hub
flange
rotary member
interchangeable
transverse
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
FR8317452A
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French (fr)
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FR2554526B1 (en
Inventor
Albert Millot
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MILLOT SARL ACM A
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MILLOT SARL ACM A
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Publication date
Application filed by MILLOT SARL ACM A filed Critical MILLOT SARL ACM A
Priority to FR8317452A priority Critical patent/FR2554526B1/en
Publication of FR2554526A1 publication Critical patent/FR2554526A1/en
Application granted granted Critical
Publication of FR2554526B1 publication Critical patent/FR2554526B1/en
Expired 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
    • F16H57/00—General details of gearing
    • F16H57/0018—Shaft assemblies for gearings
    • F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/12—Toothed members; Worms with body or rim assembled out of detachable parts

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

Abstract

The present invention relates to a rotary member with interchangeable attached peripheral elements, such as a toothed wheel, pinion, cam, etc., solidly attached to a rotating drive shaft, comprising a hub solidly attached to a transverse circular flange of greater diameter than the hub and to which flange the interchangeable peripheral elements are fixed in a removable manner. This rotary member is characterised in that the transverse flange 5 carries retention means 7 projecting in the longitudinal direction and centred on the axis of the hub 1, and each interchangeable element 2, 3 in the shape of an annular segment has, on one of its front faces 2a, 3a, at least one hollowed portion 8 in which the retention means 7 carried by the transverse flange 5 tightly engage.

Description

La présente invention concerne un organe rotatif à éléments périphériques rapportés interchangeables tels que pignons, roues dentées, cames, etc, -cet organe étant solidaire d'un arbre d'entraînement en rotation par 1 'intermé- diaire d'un moyeu cylindrique-solidaire de cet arbre. The present invention relates to a rotary member with interchangeable attached peripheral elements such as pinions, cogwheels, cams, etc., this member being integral with a rotational drive shaft by means of a cylindrical-integral hub of this tree.

De nombreux appareils utilisent des organes rotatifs dont les parties périphériques sont soumises, à la longue, à une forte usure. Tel est, par exemple, le cas des roues dentées commandant le mouvement de chaines. Lorsque les dents de ces roues sont trop usées, il est nécessaire de procéder à un remplacement d'une roue dentée usée par une roue neuve et ceci constitue une opération peu commode exigeant généralement le démontage total de l'arbre d'entraînement. Many devices use rotary members whose peripheral parts are subjected, over time, to heavy wear. This is, for example, the case of cogwheels controlling the movement of chains. When the teeth of these wheels are too worn, it is necessary to replace a worn toothed wheel with a new wheel and this constitutes an inconvenient operation generally requiring total disassembly of the drive shaft.

Pour remédier à cet inconvénient on a déjà envisagé de réaliser des roues dentées d'entraînement de chaînes comportant un moyeu solidaire de l'arbre d'entraînement et sur lequel sont rapportés des segments annulaires périphériques pouvant être aisément remplacés sans avoir à démonter le moyeu lui-même. Une telle roue dentée à éléments périphériques interchangeables est, par exemple, décrite dans le brevet français 1 289 748. Cette roue comporte deux segments annulaires s'étendant chacun sur un demi-cercle et qui sont respectivement fixés sur une bride transversale du moyeu, et ce au moyen de vis ou boulons. To overcome this drawback, it has already been envisaged to produce chain drive toothed wheels comprising a hub integral with the drive shaft and on which peripheral annular segments are attached which can be easily replaced without having to dismantle the hub itself. -even. Such a toothed wheel with interchangeable peripheral elements is, for example, described in French patent 1 289 748. This wheel comprises two annular segments each extending over a semicircle and which are respectively fixed on a transverse flange of the hub, and this by means of screws or bolts.

Un tel dispositif de montage des segments annulaires rapportés présente toutefois l'inconvénient qu'à la longue, par suite des efforts auxquels sont -soumis les segments périphériques rapportés, il peut se produire une certaine usure des éléments de fixation tels que vis et boulons, d'où un jeu appréciable des segments rapportés. Such a device for mounting the added annular segments has the drawback, however, that in the long run, as a result of the efforts to which the added peripheral segments are subjected, there may be some wear of the fastening elements such as screws and bolts, hence an appreciable play of the reported segments.

La présente invention vise à remédier à ces inconvénients an procurant un organe rotatif du type précité permettant d'obtenir et de maintenir un centrage parfait des éléments périphériques rapportés. The present invention aims to remedy these drawbacks by providing a rotary member of the aforementioned type making it possible to obtain and maintain perfect centering of the added peripheral elements.

A cet effet cet organe rotatif à éléments périphériques rapportés interchangeables, tel que roue dentée, pignon, came, etc, solidaire d'un arbre d'entraînement en rotation, comportant un moyeu solidaire d'un flasque circulaire transversal de plus grand diamètre que le moyeu et sur lequel sont fixés, de manière amovible, les éléments périphériques interchangeables en forme de segments annulaires, est caractérisé en ce que la flasque transversal porte des moyens de retenue en saillie dans le sens longitudinal et centrés sur l'axe du moyeu, et chaque élément interchangeable en forme de segment annulaire présente, dans l'une de ses faces frontales, au moins une partie en creux dans laquelle s'engagent étroitement les moyens de retenue portés par le flasque transversal. To this end, this rotary member with interchangeable added peripheral elements, such as a toothed wheel, pinion, cam, etc., secured to a rotary drive shaft, comprising a hub secured to a transverse circular flange of larger diameter than the hub and to which the interchangeable peripheral elements in the form of annular segments are removably fixed, is characterized in that the transverse flange carries retaining means protruding in the longitudinal direction and centered on the axis of the hub, and each interchangeable element in the form of an annular segment has, in one of its front faces, at least one hollow part in which the retaining means carried by the transverse flange engage closely.

Suivant une caractéristique complémentaire de l'invention les moyens de retenue sont constitués par une colle- rette circulaire bordant le flasque et qui est engagée dans une rainure en arc de cercle ménagée dans la face frontale de chaque élément périphérique en forme de segment annulaire, cette rainure étant centrée sur l'axe du moyeu. According to an additional characteristic of the invention, the retaining means consist of a circular collar bordering the flange and which is engaged in a groove in an arc formed in the front face of each peripheral element in the form of an annular segment, this groove being centered on the hub axis.

La collerette de retenue et de centrage peut être continue ou discontinue en formant alors des dents s'engageant dans des encoches prévues dans les éléments prériphériques en forme de segments annulaires. The retaining and centering collar may be continuous or discontinuous, then forming teeth engaging in notches provided in the peripheral elements in the form of annular segments.

On décrira ci-après,à titre d'exemple non limitatif, une forme d'exécution de la présente invention,en référence au dessin annexé sur lequel :
La figure 1 est une vue moitié en coupe axiale et moitié de profil d'une roue dentée de commande d'une chaîne suivant l'invention.An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the appended drawing in which:
Figure 1 is a view half in axial section and half in profile of a toothed wheel for controlling a chain according to the invention.

La figure 2 est une vué en élévation, avec arrachement partiel, de la roue dentée de la figure 1. FIG. 2 is a view in elevation, with partial cutaway, of the toothed wheel of FIG. 1.

La roue dentée suivant l'invention qui est représentée sur les figures 1 et 2 comporte un moyeu cylindrique 1 en forme de manchon lequel est entouré par deux éléments périphériques rapportés interchangeables 2, 3, chacun de ces éléments, en matière plastique résistant à l'usure, présentant la forme d'un segment annulaire s'étendant sur un arc de 1800. I1 va de soi que l'invention n'est pas limitée à ]'utilisation de deux segments annulaires tels que les segments 2, 3 et que la roue pourrait comporter un nombre n quelconque de segments annulaires. The toothed wheel according to the invention which is shown in Figures 1 and 2 comprises a cylindrical hub 1 in the form of a sleeve which is surrounded by two interchangeable attached peripheral elements 2, 3, each of these elements, made of plastic resistant to wear, having the shape of an annular segment extending over an arc of 1800. It goes without saying that the invention is not limited to the use of two annular segments such as segments 2, 3 and that the wheel could have any number n of annular segments.

Le manchon cylindrique central 1 présente, à l'une de ses extrémités, une portée cylindrique 4 de plus petit diamètre laquelle est engagée et fait saillie b travers un trou central prévu dans un flasque transversal en tôle 5 qui est soudé contre l'épaulement transversal 6 formé au raccordement en-tre la portée 4 et la surface périphérique du moyeu 1. Ce flasque transversal 5 a une forme circulaire et un diamètre supérieur h celui du moyeu 1 et il présente, à sa périphérie, une collerette 7 repliée à l'équerre dans le sens longitudinal, en direction du moyeu, vers la gauche sur la figure 1. Cette collerette 7 est engagée étroitement dans des rainures en arc de cercle 8 ménagées dans 1 'une des faces frontales 2a, 3a de chacun des deux segments annulaires 2.Chacune des rainures 8 s'étend sur la totalité du segment annulaire correspondant, c'est-à-dire sur un arc de 18nô.  The central cylindrical sleeve 1 has, at one of its ends, a cylindrical seat 4 of smaller diameter which is engaged and protrudes b through a central hole provided in a transverse sheet metal flange 5 which is welded against the transverse shoulder 6 formed at the connection between the bearing surface 4 and the peripheral surface of the hub 1. This transverse flange 5 has a circular shape and a diameter greater than that of the hub 1 and it has, at its periphery, a flange 7 folded over the square in the longitudinal direction, in the direction of the hub, to the left in FIG. 1. This flange 7 is engaged closely in grooves in an arc of a circle 8 formed in one of the front faces 2a, 3a of each of the two annular segments 2.Each of the grooves 8 extends over the entire corresponding annular segment, that is to say over an arc of 18no.

La fixation des deux segments annulaires 2, 3 sur le moyeu 1 est réalisée au moyen d'organes de fixation tels que des boulons 9 engagés longitudinalement à travers des trous longitudinaux percés de part en part dans les deux segments annula ires 2, 3, répartis régulièrement autour de l'axe, et également à travers des trous correspondants percés dans le flasque transversal 5. The two annular segments 2, 3 are fixed to the hub 1 by means of fixing members such as bolts 9 engaged longitudinally through longitudinal holes drilled right through in the two annular segments 2, 3, distributed regularly around the axis, and also through corresponding holes drilled in the transverse flange 5.

On voit, d'après la description qui précédé, que la collerette annulaire 7 prévue à la périphérie du flasque 5 soudé au moyeu 1 constitue un organe de retenue et de centrage des deux segments annulaires 2, 3. It can be seen from the description above that the annular flange 7 provided at the periphery of the flange 5 welded to the hub 1 constitutes a retaining and centering member for the two annular segments 2, 3.

Dans une va riante de réalisation 1-a collerette 7 qui est continue dans l'exemple qui est décrit ci-dessus, pourrait être remplacée par une couronne de dent s centrées sur l'axe du moyeu 1 et s'engageant dans des encoches individuelles prévues dans les faces frontales 2a, 3a des segments annulaires 2, 3, ces encoches étant naturellement centrées sur l'axe du moyeu 1.  In a variant embodiment 1-a collar 7 which is continuous in the example which is described above, could be replaced by a crown of teeth s centered on the axis of the hub 1 and engaging in individual notches provided in the front faces 2a, 3a of the annular segments 2, 3, these notches being naturally centered on the axis of the hub 1.

Claims (4)

REVENDICATIONS 1.- Organe rotatif à éléments périphériques rapportés interchangeables, tel que roue dentée, pignon, came, etc, solidaire d'un arbre d'entraînement en rotation, comportant un moyeu solidaire d'un flasque circulaire transversal de plus grand diamètre que le moyeu et sur lequel sont fixés, de manière amovible, les éléments périphériques interchangeables en forme de segments annulaires, caractérisé en ce que le flasque transversal (5) porte des moyens de retenue (7) en saillie dans le sens longitudinal et cen trés sur l'axe du moyeu (1), et chaque élément (2, 3-) interchangeable en forme de segment annulaire présente, dans l'une de ses faces frontales (2a, 3a), au moins une partie en creux (8) dans laquelle s'engagent étroitement les moyens de retenue (7) portés par le flasque transversal (5). 1.- Rotary member with interchangeable added peripheral elements, such as a toothed wheel, pinion, cam, etc., integral with a rotary drive shaft, comprising a hub integral with a transverse circular flange of larger diameter than the hub and to which the interchangeable peripheral elements in the form of annular segments are removably fixed, characterized in that the transverse flange (5) carries retaining means (7) projecting in the longitudinal direction and centered on the axis of the hub (1), and each element (2, 3-) interchangeable in the form of an annular segment has, in one of its front faces (2a, 3a), at least one hollow part (8) in which s 'tightly engage the retaining means (7) carried by the transverse flange (5). 2.- Organe rotatif suivant la revendication 1 caractérisé en ce que les moyens de retenue (7) sont constitués par une collerette circulaire bordant le flasque (5) et qui est engagée dans une rainure en arc de cercle (8) s- nagée dans la face frontale (2a, 3a) de chaque élément périphérique (2, 3) en forme de segment annulaire, cette rainure (8) étant centrée sur l'axe du moyeu. 2.- rotary member according to claim 1 characterized in that the retaining means (7) consist of a circular flange bordering the flange (5) and which is engaged in a groove in an arc (8) s- nage in the front face (2a, 3a) of each peripheral element (2, 3) in the form of an annular segment, this groove (8) being centered on the axis of the hub. 3.- Organe rotatif suivant l'une quelconque des revendications précédentes caractérisé en ce que la collerette de retenue et de centrage (7) est continue. 3.- Rotary member according to any one of the preceding claims, characterized in that the retaining and centering collar (7) is continuous. 4.- Organe rotatif suivant l'une quelconque des revendications 1 et 2 caractérisé en ce que les moyens de retenue et de centrage portés par le flasque transversal sont constitués par des dents centrées sur l'axe du moyeu (1) et s'engageant dans des encoches individuelles prévues dans les faces frontales (2a, 3a) des segments annulaires (2, 3), ces encoches étant centrées sur l'axe du moye-u (1).  4. A rotary member according to any one of claims 1 and 2 characterized in that the retaining and centering means carried by the transverse flange are constituted by teeth centered on the axis of the hub (1) and engaging in individual notches provided in the front faces (2a, 3a) of the annular segments (2, 3), these notches being centered on the axis of the hub-u (1).
FR8317452A 1983-11-03 1983-11-03 ROTARY MEMBER WITH INTERCHANGEABLE RELEVANT PERIPHERAL ELEMENTS Expired FR2554526B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8317452A FR2554526B1 (en) 1983-11-03 1983-11-03 ROTARY MEMBER WITH INTERCHANGEABLE RELEVANT PERIPHERAL ELEMENTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8317452A FR2554526B1 (en) 1983-11-03 1983-11-03 ROTARY MEMBER WITH INTERCHANGEABLE RELEVANT PERIPHERAL ELEMENTS

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FR2554526A1 true FR2554526A1 (en) 1985-05-10
FR2554526B1 FR2554526B1 (en) 1987-02-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112065951A (en) * 2020-10-15 2020-12-11 新昌县金鹰齿轮箱有限公司 High-strength straight gear and manufacturing method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102808921A (en) * 2011-05-31 2012-12-05 上海东冠纸业有限公司 Internal spur gear of paper bearing turntable of handkerchief paper folding machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1580919A (en) * 1923-04-13 1926-04-13 Reeves Pulley Co Pulley
US2230902A (en) * 1940-02-05 1941-02-04 J F Martin Segmental gear

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1580919A (en) * 1923-04-13 1926-04-13 Reeves Pulley Co Pulley
US2230902A (en) * 1940-02-05 1941-02-04 J F Martin Segmental gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112065951A (en) * 2020-10-15 2020-12-11 新昌县金鹰齿轮箱有限公司 High-strength straight gear and manufacturing method thereof

Also Published As

Publication number Publication date
FR2554526B1 (en) 1987-02-27

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