DE1089119B - Device for power supply for hand and angle pieces provided with electric lighting, especially for dental purposes - Google Patents

Description

t) iüf sciii

kl. 30 b 21/07

INTERNAT. KL. A 61 C

1089 ^

F 23437 Vlild / 306

.; ■ ''. r. I [·. ·· r:: .f .. j υ t : ' :: I; ANME IDETAG: JULY 10, 1957

NOTICE

B'Eß ΑΝΜφ JiDiFJNG

ETND DELIVERY; DEjS _ ·; -j .: JiJiShS Γι: '

DISPLAY: SEPTEMBER 15, 1960

1,068,425 is: eijiQ, Einriail:

do _; qg _{; i} zu, r- power supply _{: for} with-! electrical _:( Ββτ illuminated hand and angle pieces, especially for, zah, närtzliche ₀ purposes ^ _; b.ei .der an, ₍ the drive, roile, the, Geienkglei.tyei: bindU | n _: g .eine.ySjtrQav · source is attached -whose.one- ppi-over ty-asse ^ nd whose: other ₍ he _T1 pole, through-epx is.plier.tes K; abel, over; ikifoi ί ^^ iliShiifi device for power supply for mit eielctfisdier Beieüclitühii

provided handpieces and angle pieces, in particular for dental purposes

Addendum to patent 1,068,425

rait the light bulb;,. connected is.t. Thereby _: w, ijrd, da.s isplierte ^ cables · passed through ^ ch the inside of the handpiece or contra-angle. .- ,, <· << Λ - ν ;. · Ι --.-. - / · l -?: - , l & s.has _:) now.shown] ts, .that 4ie ^ er, turning a§ isqiiertert Eabjels irn, ^ opiiegqnden-plaij not only _: .bej der. H.ers.teliupg technical ^ c ^ ierigkeitefl rqif h 4h i

_r - lines:

Ernst Frank,

Crimea (Öbb ': j fobttenkopfstr. 28

unpleasant i ^ glejier-achqinurigen; lead ^, ^ lent the handj, or Wjnkeljät. back before the _v Ver, Yf, ending must be sterilized). _; , and - usually - at over 20P ^{| (} ? G. An..un4-in.der> proximity of the isol.t € jn, Kabeif there are sjtelkn,. ,, the. _{r yon f} dem- sterile -jeren ^ i} air flow.-only-, difficult to be praised ΙίοηΕίε ^ -δρ ^^ β the .. perfect sterilization is not always guaranteed .; ,, ·., .-., - ί -, - ι-ι 1i · - · ■;.. Ι, -.!. · μ · 7- :; rr] ■ SSSR invention is therefore 4ie Äufgaibe destruction the% and the second power supply line to the incandescent lamp, - ^ ₁ O iführen zu.-. According to, φκ · _; inventor; Ung is half of the joint sliding connection, which surrounds the _; rotatable wire; ;, electrically? isolated and mist, .- the grinding belt, electrically, connected ,, i \ [on the; isolated ^ uJ ₁ Se eats. -the. · electrical, connection via an im, .HJandT; or - ^ incelstuck _; isolated from, ground, supported.-sleeve.and-, übej-id-ie- drill shafts ^ sleeve.an _: the incandescent lamp.feed, ^ through, this kind of electrical connection .required- any-, wire lead ung ,; _; much more; wk-d iaussei; _! the measuring line to which. a ^ n iipii der..Lühlampe..g..uch. the. .other-, power line through.sleeve- and, such.part dps.Han ^ - or! elbow: led, which, anyway; ^ dem.G ^ advises y.Qrr to handle i5ind.-it is thereby .. possible that ; Hand or. Angled-stÜGkr-. In the "usual" way of the joint sliding connection, to remove. And to; sterilize, special, dead spaces, and corners, which.,. through, the sterilizing,, -Aronii ι not reached, -were can not be created by the electrical power supply. .,. r * a: -., -. j ..) · ι - ..; .. "· - · ·, ^ - :, · _■;; .The -....? -Can sterilization also ·, vorgeAQmrnen at temperatures Über.-2®Ö C, if you .. ensures that the insulating parts are made of insulating material welehes _Λ them ..- temperatures ^ .ushältsi'Zi.Bs out .. _SiIikoneq;.. .Au & sojcjiem .ma ^ eΓial.-kannfJnpin..b ■ §isρieisweise between; the outer sleeve, which serves as the ground, and the drill shaft sleeve, arrange the insulating sleeves. ,,;,;., - ..,. ^ ₁ , - Ernst Frank, Krün (Obb. ), has been named as the inventor

.Lamp bulb holder in the head part of the handpiece

used -,; be, -.the-for this purpose _{; r} jsoiiest SSE of the remaining Ma, _t .-. Üirt trofé the head portion, der.dazwisch ^ engesetztefi, .beispielsweise .eingeklebten- insulating -Fest with- the übrigen.Teilen, zijsarnmenzaihalten .des, handpiece, the electrically isolated head

jei ^ j through-; _; fine. Head screw., Directly on, drill chuck iestgehaljteri -be what the power supply to the second, .PoJ ;. causes _: _. ,., -,. j _:. ..... ..... . ·. .......

. [ _t .Special has _; it, proved to be useful, the, head part-with, one, side. Outreach -and in

dieSjer die Giüjilampeiiias & ung. accommodate. -With the lateral projection of the head part; Jcanri: a lateral projection φ ^Γ outer sleeve joined together, in derue.ine. Suspensioni for ^ the, middle connection of the incandescent lamp uri, tergebrac ^, _f is .., Um.dein the .center connection of the incandescent lamp a.good springy. _{Projection -} from the outer sleeve; and their discharge through weep. .Isolierschi-cht -. ^ Etf-ennt be ,. the _r directly.qder, indirectly a uniter, the pressure .a spring, r standing .contact piece,

z. B '- a cor ^ tact ball, serves as a counter-hunter. .... : Around. for,: elbows; one. _: e, appropriate .. Stirom feed _M without. Use ... vpn wires; with these; .di.eBp, hrerwe} lenhiülseniit the outer jacket of the drill head can be electrically conductive'veiib; unden *. _It fet: sjch -as practically proven _7, DIE, Bohr.erfes, tklemmklap, pe in two, © .lektfisch Yoneinander is.or Ijerte, -Teile.- aupteile ^ / en ^ rti _the: Bphrkopf- näqhs. tliegenderriiTeji mi ^ him., is electrically connected and carries the socket of the light bulb. The dem

009 607/16

The drill head facing away from the first isolated part of the drill clamping flap can have a suspension for contain the center connection of the light bulb.

If the drill head is provided with a ring that is electrically insulated from its body, it can by means of a preferably elastic nose with the mass of the outer jacket and by means of a resilient one Sensor with the part of the drill clamping flap facing away from the drill head in electrical connection stand. This creates a cohesive electrical Connection between the mass of the outer jacket and the part of the facing away from the drill head Drill clamping flap guaranteed in every position in which the drill head is around the axis of the Like to rotate the outer jacket. By means of an insulating ring, the part of the drill head closest to the Drill shaft sleeve be electrically separated from the outer jacket. If this insulating ring is collar-shaped placed on the end of the outer jacket and the drill shaft sleeve together with the drill head can be screwed tight by means of a threaded nut, which is applied to a sleeve that is isolated from the ground Thread can be screwed on, the drill head can be removed from the outer sleeve in a simple manner a socket wrench and reassemble.

In the figures, two exemplary embodiments of the invention are shown schematically and below described, but without the invention being limited to these embodiments.

Fig. 1 shows a handpiece according to the invention with a cut outer sleeve,

Fig. 2 shows the same handpiece in plan view and

Fig. 3 shows a section through the lateral projection of the head part and the outer sleeve with inserted Incandescent lamp in an enlarged view;

Fig. 4 shows an elbow with a cut outer sleeve and

Fig. 5 shows the same elbow in plan view, while in 4 <>

Fig. 6 shows a part of the drill clamping flap with an inserted incandescent lamp enlarged.

With the handpiece according to Fig. 1 to 3 is located in the usual manner within the casing 1, the drill shaft sleeve 2. It is, however, not stored in the jacket in usual ^ ⁵ Licher manner, but electrically insulated from the jacket. For this purpose, the jacket 1 is provided with an inner sleeve 3 which is separated from the jacket by a thin insulating sleeve 4. The drill shaft sleeve 2 is held by a threaded sleeve 5, the position of which is also stabilized by an insulating ring 6. For use, the inner sleeve 3 is pushed onto the sleeve, not shown in the drawing, of the joint sliding connection and held on it in the usual way by snapping in a spring. The sleeve of the joint slide connection is electrically isolated from the other parts of the joint slide connection on the one hand and is electrically connected to the slip ring contact located on the joint slide connection on the other hand. After the handpiece has been placed on the joint sliding connection, there is a direct electrical connection between the slip ring via the sleeve of the joint sliding connection, via the inner sleeve 3, the threaded sleeve 5 and the drill shaft sleeve 2, which extends to the drill head 7.

The drill head 7 is electrically separated from the jacket 1 by an insulating layer 8. The insulating layer 8 can be glued on as a thin silicone plate. On the drill head sits the head screw 9, which is on the End of the drill shaft sleeve 2 is screwed. This, on the one hand, establishes the electrical connection between the drill shaft sleeve and the drill head, and on the other hand, the drill head becomes fixed used on the other parts of the handpiece.

The drill head is provided with a lateral projection 10 in which the socket 11 of the incandescent lamp 12 is attached is. A bearing 13 for a contact ball 14 is seated on the insulating layer 8, which is supported by a spring 15 is pressed against the center pole 16 of the incandescent lamp 12. This ensures reliable contact in any case guaranteed.

Overall, the current path runs from the jacket Ij, which forms the mass, via the spring 15, the contact ball 14 to the center contact 16 of the incandescent lamp, then through the filament to the socket 11, from this to the drill head 7 through the drill shaft sleeve 2, the Threaded sleeve 5 and the inner sleeve 3 to the slip ring. The circuit is now closed.

In the case of the elbow according to FIGS. 4 to 6, the arrangement of the lower part is similar: Within the Shell 17 is an inner sleeve 18, which is electrically separated from the shell by an insulating sleeve 19 is. The drill shaft sleeve 20 is fastened to the inner sleeve 18 by means of a threaded sleeve 21 and again specially supported by an insulating sleeve 22. On the upper end of the jacket 17 is collar-shaped an insulating ring 23 is placed, which forms a second bearing for the drill shaft sleeve 20. The drill head 24 can be pivoted about the axis of the drill shaft sleeve 20 in a known manner. On the drill head casing 25 sits a metal ring 26 which is separated from the drill head casing by an insulating ring 27.

The drill clamping flap is electrically isolated from one another by a thin insulating layer 28 in two Parts 29 and 30 separately. In the part 29, which is the drill head first, the thread 31 is the Incandescent lamp 32 attached, while a suspension 33 is housed in the part 30 facing away from the drill head 24 which presses against the center pole 34 of the incandescent lamp.

The part 29 of the drill clamping flap sits directly on the drill head 24 in a metallically conductive manner and is therefore electrically connected to it. The part 30 of the drill clamping flap is provided with a sensor 35, which extends as far as the ring 26 and engages with its ball point 36 there in a latching recess 37. A nose 38, which forms an extension of the jacket 17, is in constant electrical contact with the ring 26, regardless of the angle by which the drill head may be rotated.

The current path in this device is as follows: The current line goes from the sheath 17 which forms the ground via the nose 38 onto the ring 26, from this via the ball tip 36 through the sensor 35 onto the Part 30 of the drill clamping flap and from this through the spring 33 to the center pole 34 of the incandescent lamp 32. After passing the incandescent lamp, the current path goes through the socket 31 of the incandescent lamp in the part 29 of the drill clamping flap, from this through the drill head 24, the drill head casing 25 and the drill shaft sleeve 20 via the threaded sleeve 21 to the inner sleeve 18 and from there in the described Way to the slip ring on the joint sliding connection.

If you want to solve the drill head 24 from the jacket 17, it is sufficient by means of a socket wrench, the reaches through the inner sleeve 18 from below to unscrew the threaded sleeve 21. Then you can

pull out the drill shaft sleeve 20 with the entire drill head upwards. It is attached in the other way around by tightening the threaded sleeve 21.

Claims (14)

PATENT CLAIMS: 1. Device for power supply for handpieces and contra-angle handpieces provided with electrical lighting, especially for dental purposes, in which, according to patent 1,068,425, one pole of the power source is connected to the light bulb via ground and the other pole via a circular, resilient, insulated slip ring , characterized in that the slip ring is electrically connected to the sleeve which surrounds the rotatable shaft, is mounted on the joint sliding connection and is electrically insulated from ground, from which the electrical connection is made via an in the hand (Fig. 1 to 3) or angle piece (Fig. 4 to 6) insulated from ground (1, 17) mounted sleeve (3, 18) and guided over the drill shaft sleeve (2, 20) to the light bulb (12, 32). 2. Device according to claim 1, characterized in that between the serving as mass Jacket sleeve (1, 17) and the drill shaft sleeve (2, 20) insulating sleeves (6, 22, 23) arranged are. 3. Device for handpieces according to claim 1 or 2, characterized in that the incandescent lamp socket (11) is inserted into the drill head (7), which is electrically isolated from ground (1). 4. Device according to claim 3, characterized in that the mass (1) is electrical insulated drill head (7) is held by a cap screw (9) on the drill shaft sleeve (2). 5. Device according to claim 3 or 4, characterized in that the drill head (7) in a lateral Projection (10) contains the bulb socket (11). . 6. Device according to claim 5, characterized in that with the lateral projection (10) of the drill head (7) a lateral projection of the jacket sleeve (1) is assembled in which a suspension (15) for the central connection (16) of the incandescent lamp (12) is housed. 7. Device according to claim 6, characterized in that the drill head (7) and its projection (10) separated from the jacket sleeve (1) and its projection by an insulating layer (8) is that directly or indirectly a contact piece under the pressure of a spring (15), for. B. a contact ball (14) serves as a counter bearing. 8. Device for elbows according to claim 1 or 2, characterized in that the Drill shaft sleeve (20) is connected to the outer jacket (25) of the drill head (24) in an electrically conductive manner. 9. Device according to claim 8, characterized in that the drill clamping flap in two parts (29, 30) that are electrically isolated from one another are divided, the ones of which are closest to the drill head (24) Part is electrically connected to it and carries the socket (31) of the incandescent lamp (32). 10. Device according to claim 9, characterized in that the drill head (24) facing away Part (30) of the drill clamp flap a suspension (33) for the central connection (34) of the Includes light bulb (32). 11. Device according to claim 8, 9 or 10, characterized characterized in that the drill head (24) with an electrically insulated from its jacket (25) Metal ring (26) is provided, which by means of a metallic, preferably elastic nose (38) with the mass of the jacket sleeve (17) and by means of a resilient sensor (35) with the from The part (30) of the drill clamping flap facing away from the drill head is in electrical connection. 12. Device according to claim 8, 9 or 10, characterized in that the drill head (24) nearest part of the drill shaft sleeve (20) by an insulating ring (23) from the jacket sleeve (17) is electrically isolated. 13. Device according to claim 12, characterized in that the insulating ring (23) is collar-shaped placed on the end of the jacket sleeve (17) and the drill shaft sleeve (20) together can be tightened with the drill head (24) by means of a threaded nut (21) which is attached to a against ground insulated sleeve (18) applied thread can be screwed. 14. Device according to one of the preceding claims, characterized in that the to Insulating pieces that can be removed from the articulated sliding connection are made of heat-resistant parts over 200 ° C Insulating materials, preferably made of silicone, exist. 1 sheet of drawings © 009 607/16 9.60