FR2499171A1 - Pneumatic potentiometer actuator controlling dental appts. - operates by compressed air with foot pressure control of piston head with continuous thread acting against toothed wheel - Google Patents

Pneumatic potentiometer actuator controlling dental appts. - operates by compressed air with foot pressure control of piston head with continuous thread acting against toothed wheel Download PDF

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Publication number
FR2499171A1
FR2499171A1 FR8102614A FR8102614A FR2499171A1 FR 2499171 A1 FR2499171 A1 FR 2499171A1 FR 8102614 A FR8102614 A FR 8102614A FR 8102614 A FR8102614 A FR 8102614A FR 2499171 A1 FR2499171 A1 FR 2499171A1
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FR
France
Prior art keywords
piston
compressed air
pneumatic device
axis
control
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.)
Withdrawn
Application number
FR8102614A
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French (fr)
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PIRAS GEORGES
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PIRAS GEORGES
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Publication date
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Priority to FR8102614A priority Critical patent/FR2499171A1/en
Publication of FR2499171A1 publication Critical patent/FR2499171A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/065—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the rack-and-pinion type
    • 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
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/04—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a rack

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The device allows dentists to control hand tools by foot pedal action without risk because the cable on the floor carries only compressed air. The device converts the longitudinal movement of a piston (3) moved by air pressure against a spring (11) into a rotation about an axis (7). The body of the piston (3) has a continuous threaded part (8) which is geared to a toothed wheel (7) which is coupled to a rotary control (9). An airtight joint between the chamber (2) and the piston head (4) is ensured by two 0-rings (5). The wheel is connected to the control by a sleeve (8) and the control is a quarter or three quarter or more turn potentiometer which controls a micromotor. The air inlet is at the end (10) of the body (1) and the air pressure is regulated by a foot control The air cable is much safer in a humid area than cables.

Description

L'invention a pour objet un dispositif pneumatique transformant un mouvement longitudinal en mouvement rotatif. The invention relates to a pneumatic device transforming a longitudinal movement into a rotary movement.

Le dispositif pneumatique permet de faire tourner, par exemple un potentiomètre d'un quart ou de trois quarts de tours. The pneumatic device makes it possible to rotate, for example a potentiometer by a quarter or three quarter turns.

Bien entendu, le dispositif peut être prévu pour faire tourner le potentiomètre, si besoin, de plusieurs tours. Of course, the device can be provided to rotate the potentiometer, if necessary, by several turns.

Actuellement, il n'existe pas de dispositif pneumatique permettant d'actionner un potentiomètre, ou analogue, qui lui-même actionne le micromoteur électrique d'une pièce à main ou autre élément analogue. Currently, there is no pneumatic device for actuating a potentiometer, or the like, which itself actuates the electric micromotor of a handpiece or other similar element.

Ainsi dans le cas d'appareils à main disposés, par exemple, dans un cabinet dentaire, le dentiste doit tourner à la main un bouton sur une platine pour faire varier la vitesse du micromoteur électrique de la pièce à main qu'il utilise. I1 peut également faire varier cette vitesse au moyen d'une pédale qui comporte directement un potentiomètre. Thus in the case of hand-held devices arranged, for example, in a dental office, the dentist must manually turn a knob on a plate to vary the speed of the electric micromotor of the handpiece which he uses. I1 can also vary this speed by means of a pedal which directly includes a potentiometer.

Dans le premier cas, l'utilisateur n'a pas les deux mains libres pour travailler, dans le second cas des câbles électriques se trouvent au niveau du sol, ce qui n'est pas souhaitable pour des raisons de sécurité. In the first case, the user does not have both hands free to work, in the second case electric cables are at ground level, which is not desirable for safety reasons.

L'invention évite tous ces inconvénients. The invention avoids all these drawbacks.

Le dispositif pneumatique, selon l'invention, permet de faire tourner un axe, sur lequel peut être fixé un potentiomètre, au moyen d'un piston actionné, sur une face pneumatiquement par un détenteur réglable et sur l'autre face par un ressort, ledit axe formant un engrenage avec le corps du piston. The pneumatic device according to the invention makes it possible to rotate an axis, on which a potentiometer can be fixed, by means of an actuated piston, on one side pneumatically by an adjustable holder and on the other side by a spring, said axis forming a gear with the body of the piston.

Le -dispositif pneumatique, selon l'invention, permet donc, en utilisant l'air comprimé, de faire tourner un potentiomètre å distance, en actionnant une pédale comportant un détenteur réglable à volonté. The pneumatic device according to the invention therefore makes it possible, by using compressed air, to rotate a potentiometer from a distance, by actuating a pedal comprising a holder adjustable at will.

De plus en plus l'air comprimé est utilisé pour la robotisation. More and more compressed air is used for robotization.

I1 est, en effet, moins dangereux de faire courir des câbles contenant de l'air comprimé que de l'électricité et ce en particulier dans les locaux humides. It is, in fact, less dangerous to run cables containing compressed air than electricity, especially in damp rooms.

Ainsi on comprend l'intérêt de l'invention notamment pour faire varier la vitesse des dispositifs des appareils à main des dentistes.  Thus one understands the advantage of the invention in particular for varying the speed of the devices of dentists' hand-held devices.

Ces appareils peuvent etre ainsi commandés par une pédale pneumatique, ce qui n'est pas le cas actuellement puisque la pédale peut contenir un potentiomètre de manière à actionner le micromoteur de l'appareil à main, au pied. These devices can thus be controlled by a pneumatic pedal, which is not currently the case since the pedal can contain a potentiometer so as to actuate the micromotor of the device by hand, at the foot.

Les dessins ci-joints donnés à titre d 'exemples indicatif et non limitatif permettront aisément de comprendre l'invention. Ils représentent un mode de réalisation préféré selon 1 'invention.  The attached drawings given by way of indicative and non-limiting examples will easily make it possible to understand the invention. They represent a preferred embodiment according to the invention.

La figure 1 est une vue en perspective du dispositif pneumatique avec une partie du carter "arr.chc-e" pour voir l'inté- rieur, piston en position haute. FIG. 1 is a perspective view of the pneumatic device with part of the casing "arr.chc-e" to see the interior, piston in the high position.

La figure 2 est la même vue piston en position basse. Figure 2 is the same piston view in the lower position.

La figure 3 est une vue en plan du dispositif pneumatique, vue de dessus,
La figure 4 est une vue de côté, du côté de l'embout du conduit d'air comprimé.FIG. 3 is a plan view of the pneumatic device, seen from above,
Figure 4 is a side view of the end of the compressed air duct end.

La figure 5 est une vue de côté, du côté de l'axe engrener sur le corps du piston et qui fait tourner le potentiomètre. Figure 5 is a side view, from the side of the axis mesh on the piston body and which rotates the potentiometer.

Sur un bâti 1 est disposée une chambre cylindrique étanche 2. Dans cette chambre se déplace hermétiquement un piston 3 dont l'étanchéité de la tête 4 est assurée par au moins un joint torique 5a, dans le mode de réalisation représenté. il y â un autre joint torique 5b.  On a frame 1 is disposed a sealed cylindrical chamber 2. In this chamber hermetically moves a piston 3 whose sealing of the head 4 is ensured by at least one O-ring 5a, in the embodiment shown. there is another O-ring 5b.

La partie extérieure 6 du corps 3 du piston 3 est filetée selon une vis sans fin. Sur cette partie extérieure est engrenée un axe 7 muni de dents de manière à tourner dans un sens ou dans un autre lorsque le corps du piston 3 se déplace. Sur cet axe 7 peut être emmanché, par une pièce de jonction ou manchon 8, l'axe du potentiomètre 9. The outer part 6 of the body 3 of the piston 3 is threaded according to an endless screw. On this outer part is meshed an axis 7 provided with teeth so as to rotate in one direction or another when the body of the piston 3 moves. On this axis 7 can be fitted, by a junction piece or sleeve 8, the axis of the potentiometer 9.

Le piston 3 est actionné, au niveau de la tête 4, par de l'air comprimé qui arrive par l'embout 10. L'air comprime, arrivant par l'embout 10 est envoyé au moyen d'un détenteur réglable, non représenté, qui peut etre actionné par une pédale. The piston 3 is actuated, at the level of the head 4, by compressed air which arrives by the end piece 10. The compressed air, arriving by the end piece 10 is sent by means of an adjustable holder, not shown , which can be operated by a pedal.

Du côté opposé de la tête 4 du piston 3, à la base de la partie 6 est disposé un ressort 11. Ce ressort 11 agit dans le sens contraire de la pression exercée par l'air comprimé sur la face de la tête 4 tel que indiqué selon la flèche F1. On the opposite side of the head 4 of the piston 3, at the base of the part 6 is disposed a spring 11. This spring 11 acts in the opposite direction to the pressure exerted by the compressed air on the face of the head 4 such that indicated according to arrow F1.

On comprend donc que l'utilisateur, en appuyant plus ou moins sur la pédale actionne un détenteur qui fait varier la pression qui manoeuvre le piston 3 et fait tourner, par conséquent, l'axe 7 transversal et le potentiomètre 9. It is therefore understood that the user, by pressing more or less on the pedal actuates a holder which varies the pressure which maneuvers the piston 3 and therefore rotates the transverse axis 7 and the potentiometer 9.

Bien entendu, le corps 3 du piston peut actionner l'axe du potentiomètre 9 par tout autre moyen, tel qu'un système de biellettes et de cames, sans sortir du cadre de l'invention. Of course, the body 3 of the piston can actuate the axis of the potentiometer 9 by any other means, such as a system of rods and cams, without departing from the scope of the invention.

L'invention s'applique notamment aux dentistes qui peuvent actionner au pied des outils à main, sans aucun risque, puisque les câbles qui sont au sol sont des câbles d'air comprimé.  The invention applies in particular to dentists who can operate hand tools at the foot, without any risk, since the cables which are on the ground are cables of compressed air.

Claims (7)

REVENDICATIONS 1. Dispositif pneumatique transformant un mouvement longitudinal en mouvement rotatif caractérisé par le fait qu'il est composé d'un piston (3) qui est actionné d'un côté par de l'air comprimé, dont la pression est réglable au moyen d'un détendeur et de l'autre côté par un ressort (11), le déplacement dudit piston actionne la rotation de l'axe (7) sur lequel peut être branché l'élément (9) qui doit tourner. 1. Pneumatic device transforming a longitudinal movement into a rotary movement characterized in that it is composed of a piston (3) which is actuated on one side by compressed air, the pressure of which is adjustable by means of a pressure reducer and on the other side by a spring (11), the displacement of said piston actuates the rotation of the axis (7) on which the element (9) which must rotate can be connected. 2. Dispositif pneumatique selon la revendication 1 caractérisé par le fait que le corps (3) du piston comporte sur sa partie (6) un filetage de vis sans fin et qu'un axe denté (7) forme engrenage, ledit axe (7) pouvant être accouplé à l'élément tournant (9). 2. A pneumatic device according to claim 1 characterized in that the body (3) of the piston has on its part (6) a worm screw thread and that a toothed axis (7) forms a gear, said axis (7) can be coupled to the rotating element (9). 3. Dispositif pneumatique selon l'une quelconque des revendications 1 ou 2 caractérisé par le fait que l'étanchéité de la chambre (2), au niveau de la tête (4) du piston est assurée par deux joints toriques 5a'5b  3. Pneumatic device according to any one of claims 1 or 2 characterized in that the sealing of the chamber (2), at the level of the head (4) of the piston is ensured by two O-rings 5a'5b 4. Dispositif pneumatique selon l'une quelconque des revendications 1, 2 ou 3 caractérisé par le fait que l'axe transversal (7), qui est engrené sur le corps (3) du piston est rendu solidaire de l'axe de rotation d'un potentiomètre (9) par un manchon (8). 4. A pneumatic device according to any one of claims 1, 2 or 3 characterized in that the transverse axis (7), which is meshed with the body (3) of the piston is made integral with the axis of rotation d 'a potentiometer (9) by a sleeve (8). 5. Dispositif pneumatique selon l'une quelconque des revendications 1, 2, 3 ou 4 caractérisé par le fait que le corps (3) du piston actionne l'élément tournant (9) par un jeu de biellettes et de cames. 5. A pneumatic device according to any one of claims 1, 2, 3 or 4 characterized in that the body (3) of the piston actuates the rotating element (9) by a set of rods and cams. 6. Dispositif pneumatique selon l'une quelconque des revendications 1, 2, 3, 4 ou 5 caractérisé par le fait -que sur un bâti (1) est disposée une chambre cylindrique étanche (2) qui loge le corps (3) et la tête (4) du piston, au niveau de la tête (4) se trouve l'embout (10) d'arrivée de l'air comprimé et à l'autre extrémité le ressort (11) qui appuie à l'extrémité de la partie (6) du piston. 6. A pneumatic device according to any one of claims 1, 2, 3, 4 or 5 characterized by the fact that on a frame (1) is disposed a sealed cylindrical chamber (2) which houses the body (3) and the head (4) of the piston, at the head (4) is the end piece (10) for the arrival of the compressed air and at the other end the spring (11) which presses at the end of the part (6) of the piston. 7. Dispositif pneumatique selon l'une quelconque des revendications 1, 2, 3, 4, 5 ou 6 caractérisé par le fait que le détendeur réglable est actionné par une pédale.  7. A pneumatic device according to any one of claims 1, 2, 3, 4, 5 or 6 characterized in that the adjustable regulator is actuated by a pedal.
FR8102614A 1981-02-03 1981-02-03 Pneumatic potentiometer actuator controlling dental appts. - operates by compressed air with foot pressure control of piston head with continuous thread acting against toothed wheel Withdrawn FR2499171A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8102614A FR2499171A1 (en) 1981-02-03 1981-02-03 Pneumatic potentiometer actuator controlling dental appts. - operates by compressed air with foot pressure control of piston head with continuous thread acting against toothed wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8102614A FR2499171A1 (en) 1981-02-03 1981-02-03 Pneumatic potentiometer actuator controlling dental appts. - operates by compressed air with foot pressure control of piston head with continuous thread acting against toothed wheel

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FR2499171A1 true FR2499171A1 (en) 1982-08-06

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FR8102614A Withdrawn FR2499171A1 (en) 1981-02-03 1981-02-03 Pneumatic potentiometer actuator controlling dental appts. - operates by compressed air with foot pressure control of piston head with continuous thread acting against toothed wheel

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539839A1 (en) * 1983-01-25 1984-07-27 Skf Nova Ab MOTION TRANSMISSION MECHANISM COMPRISING A LINEAR MOBILE MEMBER
EP0434935A1 (en) * 1989-12-28 1991-07-03 Hoke Incorporated Geared air actuator
EP0479399A2 (en) * 1990-10-01 1992-04-08 MANNESMANN Aktiengesellschaft Pneumatic rotary actuator for accurate positioning of a power output member

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539839A1 (en) * 1983-01-25 1984-07-27 Skf Nova Ab MOTION TRANSMISSION MECHANISM COMPRISING A LINEAR MOBILE MEMBER
EP0434935A1 (en) * 1989-12-28 1991-07-03 Hoke Incorporated Geared air actuator
EP0479399A2 (en) * 1990-10-01 1992-04-08 MANNESMANN Aktiengesellschaft Pneumatic rotary actuator for accurate positioning of a power output member
EP0479399A3 (en) * 1990-10-01 1992-12-23 Mannesmann Aktiengesellschaft Pneumatic rotary actuator for accurate positioning of a power output member

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