DENTAL HANDPIECE HAVING AN IMPROVED PUSH BUTTON GUIDANCE
The present invention relates to a dental handpiece (1) comprising: a head (4); a clamping means (13) which is rotatably arranged within a bearing (19) inside the head (4), and adapted for releasably clamping a dental drill (2), wherein the bearing (19) has an inner race (21) fixed to the clamping m...
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Format | Patent |
Language | English French |
Published |
01.02.2024
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Abstract | The present invention relates to a dental handpiece (1) comprising: a head (4); a clamping means (13) which is rotatably arranged within a bearing (19) inside the head (4), and adapted for releasably clamping a dental drill (2), wherein the bearing (19) has an inner race (21) fixed to the clamping means (13) and an outer race (21) fixed to a housing (5) of the head (4); a driving means for rotating the clamping means (13) about an axial direction of the dental drill (2); a push button (7) which is arranged movably in the head (4) along the axial direction and configured to actuate the clamping means (13) to release the dental drill (2); and a biasing means to move the push button (7) away from the clamping means (13); characterized in that a radial inner surface (7a) of the push button (7) is arranged to contact and slide on a radial outer surface (20a) of the outer race (20) which configures a guide (12) for the moving push button (7), wherein the radial direction is perpendicular to axial direction of the dental drill (2); and wherein a radial clearance (A) is arranged between a radial inner surface (5a) of the housing (5) and a radial outer surface (7b) of the push button (7).
La présente invention concerne une pièce à main dentaire (1) comprenant : une tête (4) ; un moyen de serrage (13) qui est disposé de manière rotative à l'intérieur d'un palier (19) à l'intérieur de la tête (4), et conçu pour serrer de manière amovible un foret dentaire (2), le palier (19) ayant une bague intérieure (21) fixée au moyen de serrage (13) et une bague extérieure (21) fixée à un boîtier (5) de la tête (4) ; un moyen d'entraînement pour faire tourner le moyen de serrage (13) autour d'une direction axiale du foret dentaire (2) ; un bouton-poussoir (7) qui est agencé de façon mobile dans la tête (4) le long de la direction axiale et configuré pour actionner le moyen de serrage (13) pour libérer le foret dentaire (2) ; et un moyen de sollicitation pour éloigner le bouton-poussoir (7) du moyen de serrage (13) ; caractérisé en ce qu'une surface interne radiale (7a) du bouton-poussoir (7) est agencée pour entrer en contact avec et coulisser sur une surface externe radiale (20a) de la bague externe (20) qui configure un guide (12) pour le bouton-poussoir mobile (7), la direction radiale étant perpendiculaire à la direction axiale du foret dentaire (2) ; et un jeu radial (A) étant disposé entre une surface interne radiale (5a) du boîtier (5) et une surface externe radiale (7b) du bouton-poussoir (7). |
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AbstractList | The present invention relates to a dental handpiece (1) comprising: a head (4); a clamping means (13) which is rotatably arranged within a bearing (19) inside the head (4), and adapted for releasably clamping a dental drill (2), wherein the bearing (19) has an inner race (21) fixed to the clamping means (13) and an outer race (21) fixed to a housing (5) of the head (4); a driving means for rotating the clamping means (13) about an axial direction of the dental drill (2); a push button (7) which is arranged movably in the head (4) along the axial direction and configured to actuate the clamping means (13) to release the dental drill (2); and a biasing means to move the push button (7) away from the clamping means (13); characterized in that a radial inner surface (7a) of the push button (7) is arranged to contact and slide on a radial outer surface (20a) of the outer race (20) which configures a guide (12) for the moving push button (7), wherein the radial direction is perpendicular to axial direction of the dental drill (2); and wherein a radial clearance (A) is arranged between a radial inner surface (5a) of the housing (5) and a radial outer surface (7b) of the push button (7).
La présente invention concerne une pièce à main dentaire (1) comprenant : une tête (4) ; un moyen de serrage (13) qui est disposé de manière rotative à l'intérieur d'un palier (19) à l'intérieur de la tête (4), et conçu pour serrer de manière amovible un foret dentaire (2), le palier (19) ayant une bague intérieure (21) fixée au moyen de serrage (13) et une bague extérieure (21) fixée à un boîtier (5) de la tête (4) ; un moyen d'entraînement pour faire tourner le moyen de serrage (13) autour d'une direction axiale du foret dentaire (2) ; un bouton-poussoir (7) qui est agencé de façon mobile dans la tête (4) le long de la direction axiale et configuré pour actionner le moyen de serrage (13) pour libérer le foret dentaire (2) ; et un moyen de sollicitation pour éloigner le bouton-poussoir (7) du moyen de serrage (13) ; caractérisé en ce qu'une surface interne radiale (7a) du bouton-poussoir (7) est agencée pour entrer en contact avec et coulisser sur une surface externe radiale (20a) de la bague externe (20) qui configure un guide (12) pour le bouton-poussoir mobile (7), la direction radiale étant perpendiculaire à la direction axiale du foret dentaire (2) ; et un jeu radial (A) étant disposé entre une surface interne radiale (5a) du boîtier (5) et une surface externe radiale (7b) du bouton-poussoir (7). |
Author | ERTUGRUL, Metin |
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DocumentTitleAlternate | PIÈCE À MAIN DENTAIRE AYANT UN GUIDAGE DE BOUTON-POUSSOIR AMÉLIORÉ |
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RelatedCompanies | DENTSPLY SIRONA INC SIRONA DENTAL SYSTEMS GMBH |
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Snippet | The present invention relates to a dental handpiece (1) comprising: a head (4); a clamping means (13) which is rotatably arranged within a bearing (19) inside... |
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Title | DENTAL HANDPIECE HAVING AN IMPROVED PUSH BUTTON GUIDANCE |
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