JPH01170208U

JPH01170208U -

Info

Publication number: JPH01170208U
Application number: JP6825488U
Authority: JP
Priority date: 1988-05-23
Filing date: 1988-05-23
Publication date: 1989-12-01
Anticipated expiration: 2003-05-23
Also published as: JPH065772Y2

Description

[Brief explanation of the drawing]

第１図はインストルメントの断面図、第２図は
インストルメント本体の断面図、第３図はインス
トルメントヘツドの側面図、第４図は軸受シース
部の一部断面図、第５〜７図はヘツド固定リング
の説明図、第８図はヘツド固定バネの側面図であ
る。１…インストルメント本体、２…インストルメ
ントヘツド、３…アングル部、４…スリーブ、７
…ヘツド固定リング、８…ヘツド固定ボール、９
…ヘツド押えボール、１０…カム溝、１４…ヘツ
ド固定バネ。 Figure 1 is a sectional view of the instrument, Figure 2 is a sectional view of the instrument body, Figure 3 is a side view of the instrument head, Figure 4 is a partial sectional view of the bearing sheath, and Figures 5 to 7. 8 is an explanatory view of the head fixing ring, and FIG. 8 is a side view of the head fixing spring. 1...Instrument body, 2...Instrument head, 3...Angle part, 4...Sleeve, 7
...Head fixing ring, 8...Head fixing ball, 9
...Head holding ball, 10...Cam groove, 14...Head fixing spring.

Claims

[Scope of utility model registration request]

A dental instrument consisting of an instrument body having a driving source and an instrument head detachably attached to the instrument body. a head fixing ring supported so as to be rotatable in the cylindrical angle part; at least two balls inserted into through holes provided in the angle part; and a head fixing spring housed in the groove, and the instrument head includes a bearing sheath part that is fitted into the cylindrical angle, and the through hole of the angle part has a diameter smaller than the ball diameter on the inner side. ,
The head fixing ring has a diameter larger than the ball diameter on the outer surface side, and a head fixing cam groove corresponding to one through hole and a head holding round hole corresponding to the other through hole are provided in the head fixing ring. One of the hairs of the fixing spring is locked to one of the angle part and the fixing ring, and the other hair of the head fixing spring is fixed to the other of the angle part and the fixing ring at an angle smaller than the certain angle in the circumferential direction. A fixing mechanism for a head in a dental instrument, characterized in that the head is inserted into a provided whisker groove.