FR2498445A1 - Casing for dental handpiece - is hollow cylindrical body with integral head in which rotary tool is mounted - Google Patents
Casing for dental handpiece - is hollow cylindrical body with integral head in which rotary tool is mounted Download PDFInfo
- Publication number
- FR2498445A1 FR2498445A1 FR8101544A FR8101544A FR2498445A1 FR 2498445 A1 FR2498445 A1 FR 2498445A1 FR 8101544 A FR8101544 A FR 8101544A FR 8101544 A FR8101544 A FR 8101544A FR 2498445 A1 FR2498445 A1 FR 2498445A1
- Authority
- FR
- France
- Prior art keywords
- casing
- handpiece
- dental tool
- head
- hollow
- 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
Links
- 235000016623 Fragaria vesca Nutrition 0.000 claims description 2
- 240000009088 Fragaria x ananassa Species 0.000 claims description 2
- 235000011363 Fragaria x ananassa Nutrition 0.000 claims description 2
- 210000002105 tongue Anatomy 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/08—Machine parts specially adapted for dentistry
- A61C1/12—Angle hand-pieces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/08—Machine parts specially adapted for dentistry
- A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
Abstract
Description
La présente invention a pour objet un perfectionnement apporté aux pièces à main de dentisterie du type comportant un corps creux allongé de forme générale cylindrique s'emboîtant à l'une de ses extrémités sur le nez d'un moteur d 'entrainement et comportant à son autre extrémité des moyens pour le maintien et 1 'entrainement en rotation d'un outil dentaire, le mouvement de rotation du moteur étant transmis mécaniquement par un ensemble disposé dans ledit corps creux, lesdits moyens de maintien et d 'entrainement étant regroupés dans un carter formant te te de la piece à main. The present invention relates to an improvement made to dentistry handpieces of the type comprising an elongated hollow body of generally cylindrical shape fitting at one of its ends on the nose of a drive motor and comprising at its other end of the means for holding and driving in rotation a dental tool, the rotational movement of the motor being transmitted mechanically by an assembly disposed in said hollow body, said holding and driving means being grouped in a casing forming you te of the handpiece.
Les pièces à main de dentisterie connues relèvent pratiquement toutes du type décrit ci-dessus. Known dentistry handpieces are almost all of the type described above.
La caractéristique générale commune de ces pièces à main est que la partie qui tient l'outil dentaire (fraise) est conçue sous la forme d'une tête nettement détachée du corps même de la pie- ce à main. The general common characteristic of these handpieces is that the part which holds the dental tool (cutter) is designed in the form of a head clearly detached from the body of the handpiece itself.
I1 s'ensuit un prix d'usinage treks élevé de la pièce à main, essentiellement en raison de la structure même de la tête. It follows a high treks machining price for the handpiece, mainly due to the very structure of the head.
La présente invention a pour objet de pallier cet inconvénient en proposant une piece à main simplifiée ne comportant pas de tête indépendante. The object of the present invention is to overcome this drawback by proposing a simplified handpiece that does not have an independent head.
Conformément à l'invention ce résultat est obtenu avec une pièce à main du type décrit ci-dessus, caractérisée par le fait que le corps de la pièce à main et le carter formant tête sont réalisés selon une structure monobloc. In accordance with the invention, this result is obtained with a handpiece of the type described above, characterized in that the body of the handpiece and the housing forming the head are produced in a one-piece structure.
Le corps de la piece à main, qui est creux, reçoit alors l'axe d'entrainement du pignon supportant l'outil dentaire dans la tête de la pièce à main. L'outil dentaire peut être maintenu par tout dispositif de verrouillage longitudinal approprié. I1 pourra s'agir par exemple d'une languette pivotant autour d'un axe et semblable aux languettes utilisées dans certains contre-angles connus. The body of the handpiece, which is hollow, then receives the pinion drive axis supporting the dental tool in the head of the handpiece. The dental tool can be held by any suitable longitudinal locking device. I1 could for example be a tongue pivoting about an axis and similar to the tongues used in certain known contra-angles.
I1 pourra également s'agir d'une griffe de maintien de fraise par friction, telle que décrite dans le brevet français 1 255 386 au nom de la demanderesse. Avantageusement le dispositif de maintien sera du type décrit dans la demande de brevet français 77-17974 au nom de la demanderesse. It may also be a claw for holding the cutter by friction, as described in French patent 1,255,386 in the name of the applicant. Advantageously, the holding device will be of the type described in French patent application 77-17974 in the name of the applicant.
On comprendra mieux l'invention grâce à la description ci-après d'un mode préfére de réalisation en référence aux dessins annexés dans lesquels
- la figure I est une vue en coupe longitudinale d'une pièce à main simplifiée conforme à l'invention
- la figure 2 est une vue selon F de la figure 1.The invention will be better understood from the following description of a preferred embodiment with reference to the accompanying drawings in which
- Figure I is a longitudinal sectional view of a simplified handpiece according to the invention
- Figure 2 is a view along F of Figure 1.
Le corps du contre-angle, prévu pour astre monté sur le nez d'un moteur avec un accrochage standard qui ne ruera pas décrit car bien connu des spécialistes, se compose essentiellement d'un cylindre allongé (I) de forme extérieure tronconique se rétréìs- sant vers l'avant de la piece à main. The body of the contra-angle, intended to be mounted on the nose of an engine with a standard attachment which will not be described because it is well known to specialists, essentially consists of an elongated cylinder (I) of frustoconical external shape which is shrunk - health towards the front of the handpiece.
Ce cylindre est muni d'un alésage intérieur le traversant de part en part, et débouchant à l'extrémité antérieure dans la cavité intérieure (2) d'un carter (3) usiné à partir de la meme pièce que le corps (1). La cavité intérieure (2) du carter (3) est de forme générale cylindrique, avec axe disposé sensiblement per pendictilairement à l'axe longitudinal a-b du corps (1) de la pièce à main. This cylinder is provided with an internal bore passing right through, and emerging at the anterior end in the internal cavity (2) of a casing (3) machined from the same part as the body (1) . The internal cavity (2) of the casing (3) is of generally cylindrical shape, with an axis disposed substantially per pendictilarly to the longitudinal axis a-b of the body (1) of the handpiece.
A l'intérieur du corps (1) est vissé un coussinet (4) dans lequel tourne l'arbre (5) sur quasiment toute sa longueur. Inside the body (1) is screwed a bearing (4) in which the shaft (5) rotates over almost its entire length.
L'arbre (5) comporte à son extremité antérieure un pignon (6) et à son autre extrémité un entraineur (7) recevant le mouvement de rotation du moteur.The shaft (5) has at its front end a pinion (6) and at its other end a drive (7) receiving the rotational movement of the motor.
Un axe creux (9) est chassé dans le carter (3). il est donc fixe. A hollow shaft (9) is driven into the housing (3). it is therefore fixed.
La queue de fraise tourne librement dans ce tube. Elle est entrainée, par son méplat (10), par le méplat correspondant d'un pignon (8) qui emboite l'extérieur de ce tube 19) et tourne sur ce pivot. The strawberry tail turns freely in this tube. It is driven, by its flat (10), by the corresponding flat of a pinion (8) which fits the outside of this tube 19) and turns on this pivot.
Ce tube (9) peut comporter une tête de faible hauteur butant sur le carter (3), mais peut également comme dans 1' exemple représenté comporter une te te avec filetage extérieur sur lequel vient se fixer un ressort tel que celui représenté et décrit -dans la demande de brevet française 80-27642 au nom de la demanderesse. This tube (9) may include a head of low height abutting on the casing (3), but may also, as in the example shown, include a head with an external thread on which is fixed a spring such as that shown and described - in French patent application 80-27642 in the name of the applicant.
L'outil dentaire est verrouillé par une plaque (12) coulissant dans des rainures t13) ménagées sur la partie antérieure du corps (1) et supérieure du carter (3), ce qui est représenté à la figure 2. The dental tool is locked by a plate (12) sliding in grooves t13) formed on the front part of the body (1) and upper part of the casing (3), which is shown in FIG. 2.
La plaque (12) est de forme en soi classique, comportant une lumière oblongue se terminant à son extrémité antérieure par un alésage de diamètre supérieur à la largeur du reste de la lumière. The plate (12) is in itself conventional in shape, comprising an oblong opening ending at its anterior end with a bore of diameter greater than the width of the rest of the opening.
La plaque est solidarisée à un poussoir (14) par une vis (15). Le poussoir comporte avantageusement une rampe de manoeuvre (16). il est limité dans sa course par une vis (17) venant en butée dans une lumière (18) du corps (1) de la pièce à main et il est sollicité par un ressort (19). The plate is secured to a pusher (14) by a screw (15). The pusher advantageously comprises an operating ramp (16). it is limited in its travel by a screw (17) abutting in a slot (18) in the body (1) of the handpiece and it is biased by a spring (19).
L'invention trouve particulièrement son application dans la réalisation de pièces à main peu onéreuses, simples et donc trbE fiables The invention particularly finds its application in the production of inexpensive, simple and therefore very reliable handpieces.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8101544A FR2498445A1 (en) | 1981-01-26 | 1981-01-26 | Casing for dental handpiece - is hollow cylindrical body with integral head in which rotary tool is mounted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8101544A FR2498445A1 (en) | 1981-01-26 | 1981-01-26 | Casing for dental handpiece - is hollow cylindrical body with integral head in which rotary tool is mounted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2498445A1 true FR2498445A1 (en) | 1982-07-30 |
Family
ID=9254571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8101544A Pending FR2498445A1 (en) | 1981-01-26 | 1981-01-26 | Casing for dental handpiece - is hollow cylindrical body with integral head in which rotary tool is mounted |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2498445A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5040978A (en) * | 1989-12-22 | 1991-08-20 | Dentsply Research & Development Corp. | Dental prophy angle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3578745A (en) * | 1968-05-06 | 1971-05-18 | Marcel Garnier | Dental instrument |
| US4021917A (en) * | 1975-02-20 | 1977-05-10 | Nakanishi Dental Mfg., Co., Ltd. | Dental handpiece and a cartridge for a head thereof |
-
1981
- 1981-01-26 FR FR8101544A patent/FR2498445A1/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3578745A (en) * | 1968-05-06 | 1971-05-18 | Marcel Garnier | Dental instrument |
| US4021917A (en) * | 1975-02-20 | 1977-05-10 | Nakanishi Dental Mfg., Co., Ltd. | Dental handpiece and a cartridge for a head thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5040978A (en) * | 1989-12-22 | 1991-08-20 | Dentsply Research & Development Corp. | Dental prophy angle |
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