DE1068425B - - Google Patents

Description

GERMAN

Diu Erliniiuiig refers to a device for supplying power to those provided with electric lighting Handpieces and contra-angles, in particular for dental purposes. For such dental practice Various power supplies are already available. So you have from outside the devices Lying power sources feed lines brought up to the devices and these with winding devices provided to prevent the feed lines from hanging around the dental equipment. Even If the feed lines are held in place by a winding device, they will still be immediately introduced to the device and hinder the subtle work of the dentist by their presence. Also the reinforcement of the rods as a second lcilimg.iweg iii is not frustrating, because it is on the joints there is an irregular, uncontrollable interruption of the line routing through the oil film, which must be present in the joint of the linkage. about its easy mobility to sjeliern.

ICs are also known to be in front of or behind the drive roller for opening the hand and V-angled bores used joint slide forming a dynamo or a battery with which to install the light source is in a permanent connection. This arrangement often makes it impossible to get the Holirgeriil into the Gained direction to (learn to bring the tooth to be treated and at the same time the tooth in the correct Way to illuminate.

These difficulties are avoided when using the inventive fiiirichtuiig for power supply in that one pole of the power source is connected to ground and the other pole is connected to the incandescent lamp by an insulated cable via a circular, resilient, insulated slip ring. This creates a power supply to the incandescent lamp from the power source that is secured against any disturbance and in which no cables hinder the work. It is also possible with the device according to the invention for power supply to always rotate the joint sliding connection during treatment relative to the direction of the drill so that the drill and the incandescent lamp come in the most favorable position to the tooth to be treated, without the power source being a hindrance. In a particular embodiment of the invention, the handpiece or angle piece carries a mating contact on the part facing the sliding connection, e.g. B. a seated or resilient slip ring, which is connected to the incandescent lamp via an insulated line. The mating contact attached to the handpiece or angle piece can be attached to the device for power supply by the holding device for the hand piece or angle piece, which is known per se on the Geleiikgleitverbimlung
for with electric lighting
provided handpieces and contra-angles,
especially for dental purposes

Applicant:

Ernst Frank,
Krün (Obb.), Krottenkopfstr. 28

Ernst Frank, Krün (Obb.),
has been named as the inventor

the slip ring mounted in the joint slide connection are pressed.

In the drawings, some embodiments of the Erliiiduug are shown schematically and after-

a5 .described below.

Fig. I shows a cross section through a joint sliding connection,

I ^r ig ". 2 a handpiece with lighting with the outer wall cut open,

3 shows an angle piece with lighting with the outer wall partially cut open.

On the Doriot linkage 1 is in a known manner. Articulated sliding connection 2 attached, from which an arm 4 extends over to the front bearing 5 . The shaft 6 mounted in the bearing S is used in the usual way as a drive shaft for the drill, but at the same time as a shaft for the rotor 7 of a dynamo, which is accommodated in a housing 9 together with the stator 8. The sprocket 10, by which the shaft 6 is driven in a known manner, thus simultaneously serves to drive the rotor 7. The dynamo consisting of the rotor 7. and the stator 8 thus generates a current while the drill is in operation; which is led to the contacts 11 and 12 , the; can be resilient. Instead of the two contacts, a single contact ring can also be used if the other pole of the power source is conductively connected to the metallic body (AIasse) of the device.

If a battery is used to generate electricity, the housing 9 is used to accommodate the battery. In these cases, too, the generated current is fed to contacts 11 and 12 or, with one pole applied to ground, to a contact ring.

909 647/16

Claims (3)

A handpiece 13 or an angle piece 14 is placed on the joint-sliding connection in a known manner. The resilient angle lever 16 holds these attached parts on the joint-sliding connection in a known manner. The handpieces 13 or angle pieces 14 to be placed on the joint-sliding connection each have two slip rings 17 and 18, or, if a pole is connected to ground, only one slip ring. When the Aut-.satzteile are placed on the articulated sliding connection, the slip rings 17 and 18 with the Kontaktenll and 12, or the two opposing contact rings with each other, the springs 19 and 20 press the contacts on both sides firmly against each other and the Angle lift! 16 provides the counter pressure. The slip rings 17 are always connected to the metallic bodies of the handpieces or angle pieces. An insulated wire 21 leads from the slip rings 18 as a supply line to the incandescent lamp 22, while the second pole of the incandescent lamp is connected to ground. In the handpiece shown in FIG. 2, the insulated wire is passed through a special tube 23. This tube is delimited from the drill shaft 25 by the wall 24. This makes it possible to connect the tube 23 to the handpiece 13 in such a way that its outer tube wall 26 forms a finness with the wall of the handpiece. When working with the handpiece, the presence of the tube 23 is therefore not perceived as a nuisance, but rather provides an additional, desired hold for the handling of the handpiece. In the elbow 14 shown in Figure 3, the insulated wire is entirely within the wall of the handle. I can be surrounded by a tight spiral spring like a Bowden cable. A ring 28, to which the wire 21 is conductively connected, is attached to the handle piece, which is electrically insulated from the latter. The known Bohrerfestklcmmklappe 30 is attached to the head part 29 of the angle piece 14 by means of a screw 31. However, while in the known angle to this 1 sheet pieces the drill clamping flap is metallically connected to the other parts, according to the invention the Bohrerfestklemniklappe is isolated by insulating pieces 32 from the other metal parts, and the screw 31 must be insulated so that the drill clamping flap 30 an electrical connection between the contact 18 and the one pole 33 of the incandescent lamp 22 is established. Patkmtansp r ('che. 1. Device for supplying power to handpieces and contra-angles provided with electric lighting, especially for dental purposes, in which a dynamo or a battery is installed in front of or behind the drive roller of the joint sliding connector used to hold the Tland and Winkelbohrteile, characterized in that the one pole via ground and the other pole through an insulated cable (21) via a circular, resilient, insulated slip ring (11, 12; connected to the incandescent lamp). 2. Power supply according to claim 1, characterized in that the handpiece or angle piece (13, 14) on the part facing the sliding connection (2) has a mating contact, for. B. carries a fixed or resilient slip ring (17,18) which is connected to the incandescent lamp (22) via an insulated line (21) . 3. Power supply according to claim 1 or 2, characterized in that the on the! Land or elbow (13, 14) attached mating contact (17, 18) by the known, located on the Gc-Ienkgleitverbindungen I laltevorrichtiing for the hand or Winkelbohrstiick is pressed onto the slip ring (11, 12) mounted on the joint sliding connection (2) . Tn considered publications:
German Pateutsclirift Xr. 590 750;
French patents Kr. I 009 007,
027 749. drawings O 909 647/16 10.