CS200669B1 - Coupling for the connection of the driving and cooling medium feed notably in the dental technics - Google Patents

Abstract

The coupling is for a feed pipe of a drive and coolant medium, as used in fluid for a dental drill and comprises an outer body (1) into which an inner body (3) tightly projects. The inner body has, in the direction of its inner end, a dia which gradually becomes smaller. Seats are provided for sealing rings (4), and a groove for a sprung securing ring (2) is located in an inner ring groove of the outer body. The coupling is esp. for a turbine driven drill. Both the outer body and the inner have central channels (1a, 3a).

Description

The subject of the invention is a coupling for connecting the drive of the drive shaft to the working tool in dental technology, in particular for connecting the hose and the turbine of a dental drill.

The prior art method of coupling the working tool to the drive medium supply is carried out in such a way that the drive medium supply is connected to the work tool in a fixed manner by a non-detachable bandage or by a fixed detachable pull-over. In the first case, the connection does not allow disassembly without damage. In the latter case, it is time-consuming and leads to damage to the contact surfaces when the coupling is coupled by a sleeve. Furthermore, the rigid connection of the input shaft of the drive shaft with the implement will result in the force being transmitted to the implement, which is generated by the torque lead when the implement is rotated.

The clutch according to the invention is characterized by the fact that it consists of an outer body provided with a conical recess, in which the inner body, which has a gradually varying diameter with its inner end and has grooves for the ring seals and a groove for the spring a ring which is received in the internal recess of the outer cylindrical body.

By utilizing a swivel quick coupling in dental technology, in particular in the connection of the hose with the turbine body, it will allow the turbine handpiece to be connected and disconnected with the hose, making it easier for the attending physician to change the turbine handpieces according to operations and sterilization without damage.

200 669

The coupling according to the invention permits rapid disengagement and disengagement of the drive medium supply of the tool workstations by mere pull or pressure and since it is designed so that a slightly rotatable connection eliminates the transmission of the force resulting from the rotation of the working tool.

The attached drawing shows exemplary embodiments of a swiveling coupling for driving the supply of the propulsion vessel including cooling and a turbine hand, cut in a longitudinal section of the turbine hand.

The turbine handpiece is connected to the connection part and the inlet hose is provided outside the body and in which the bore holes are drilled for supplying the propulsion vessel, i.e. air and coolant. Further, the exterior of the body is provided with an internal punch, in which a traveling pair of ring 2 is housed. The drive shaft of the propulsion bow is provided with inner bodies. 3. In the inner cup 3 of the supply hoses are drilled holes for supplying pressure. air and cooling tank. Inner body 3 aa aaare · to the end of the muscle, extending tangent to the outer body, and. On the circumferential surface, it is provided with grooves for receiving the weight rings 4. It is further provided with a groove for the locking pair ring 2.

The function of the coupling is to insert the inner body 3 into the outer body 1 in the turbine handpiece. The inner body 6 is provided with sealing rings 4 for sealing the drive air of the turbine handpiece and the cooling tank. When the inner body 3 is slid into the outer body and J1, the slip ring 2 engages in the groove in the inner body 3. By snapping the retaining ring 2 into the groove in the inner body and 3, the hose is secured against falling out or pushing out the pressurized medium. By inserting the inner body 3 into the outer body 11, the turbine handpiece is coupled to the supplying drive medium and cooling. The forces caused by the rotation of the turkey turbine head inlet hoses are eliminated by turning the inner body 3 in the outer body 1. The sealing rings 4 separate or seal the compressed air and coolant spaces to be connected, but do not prevent their relative rotation.

Claims (1)

Coupling for the supply of propellant and cooling medium, in particular in the dontal technique, characterized in that it consists of an outer body (1) provided with a conical recess into which the inner body (3) extends tangentially and has a progressively smaller diameter and is provided with recesses for the ring seals (4) and a groove for the spring ring (2) which is received in the internal recess of the outer cylindrical body (1).