EP1236865B1 - Druckluftwerkzeug - Google Patents
Druckluftwerkzeug Download PDFInfo
- Publication number
- EP1236865B1 EP1236865B1 EP02002426A EP02002426A EP1236865B1 EP 1236865 B1 EP1236865 B1 EP 1236865B1 EP 02002426 A EP02002426 A EP 02002426A EP 02002426 A EP02002426 A EP 02002426A EP 1236865 B1 EP1236865 B1 EP 1236865B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turning device
- housing part
- accordance
- supply conduit
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/026—Fluid driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/06—Adaptations for driving, or combinations with, hand-held tools or the like control thereof
- F01D15/062—Controlling means specially adapted therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/904—Tool drive turbine, e.g. dental drill
Definitions
- the present invention relates to a pressurized fluid operated turning device for example.
- Pneumatic tools according to the preamble of claim 1.
- Turning device forms the switch at least partially rear housing part and is opposite the front Housing part and a housing receiving him over a thread rotatable. With this twisting will the Pressure fluid supply released or closed.
- the Braking device is spring loaded and is the Closing the pressure fluid supply with the twisting of the Switch pressed on the rotor.
- This known rotating device is structurally relatively consuming and requires a variety of components.
- the opening and closing of the Pressure fluid supply not with a single hand too accomplish and therefore impractical and beyond time-consuming because of the large number of necessary turns.
- the object of the present invention is to provide a To provide rotary device of the type mentioned, the with fewer components and the simpler and easier faster way via a fluid switch to a standstill can be brought.
- the Switch is designed as a simple slide switch, the not only in one-hand operation but also very fast Way to operate.
- the shift-resistant Connection of the brake disc and the slide switch is without further components an immediate opening and Closing the braking device by means of the slide switch possible.
- the compressed air tool 10 shown in the drawing has a rotating device 11, the bspw a rotor 12. in the form of a turbine with compressed air can be acted upon and thereby set in rotation.
- the supply of compressed air is by means of a Slide switch 13 switched on and off, with the Switching off compressed air via the slide switch 13 at the same time a braking device 14 on the rotor 12 for Effect comes.
- the pneumatic tool 10 has an elongated Housing 16, the one rotatably connected to the rotor 12 Drive shaft 18 surrounds, which at its from the housing 16th outstanding end is provided with a chuck 19.
- the drive shaft 18 is both close to the rotor 12 Range as well as on the rotor 12 far and the chuck 19 near area in the housing 16 rotatably mounted.
- a front housing part 17 is at its one connectable rear housing part 21 facing the end 22nd cup-shaped.
- the cup-shaped end 22 is of a lid part 23 of the rear housing part 21st locked.
- the lid part 23 is of a tube part 24th the rear housing part 21 penetrates, which pipe part 24 axially an axial feed channel 26 for the Compressed air has.
- Cover part 23 and pipe part 24 are here integrally.
- the feed channel 26 opens into the turbine rotor 12. Outside the cover part 23 of the feed channel 26 is in Pipe part 24 interrupted. In the facing each other closed ends 27 and 28 of the feed channel 26 open several evenly distributed over the circumference arranged radial overflow channels 31 and 32, from the Outside circumference of the pipe part 24 go out.
- sleeve-shaped slide 36 On the one with smooth cylindrical outer periphery 29 provided pipe part 24, with a connection end 33 for a Compressed air hose connection is one sleeve-shaped slide 36 axially movable. Of the sleeve-shaped slide 36 serves as a switch for the Feeding and shutting off via the feed channel 26 supplied compressed air for driving the rotating device eleventh
- the slider 36 has an inner annular groove 37, which in the Is able, the radial overflow 31 and 32 of the two closed Zutechnologykanalenden 27 and 28 to each other connect.
- the annular groove 37 therefore has according to the figure 2 a width equal to the distance of the radial transfer passages 31 and 32 corresponds, so that in the switched-on position of the slide switch 36, the outlet openings of the radial Overflow channels 31 and 32 covered by the annular groove 37 and are connected.
- On both sides of the annular groove 37 are an O-ring 38 and two O-rings 39 and 40 are arranged, the in the switched-on state leakage to the outside prevented and of which the indirect O-ring 40 in the Compressed air supply interrupting state of Slider switch 36 at a location between the two radial overflow channels 31 and 32 is arranged (FIG 1). In this position, the transfer ports 31 are not connected to the transfer channels 32, so that the Compressed air supply is interrupted.
- the sleeve-shaped slide 36 has several, for example. Three evenly distributed over the circumference arranged Control pins 41 which extend in the axial direction.
- the control pins 41 are with their one end in Blind holes 42 of the sleeve-shaped slider 36th held, penetrate guide holes 43 in Cover part 23 axially movable and are at their inside the cup-shaped end 22 of the front housing part 17th lying end with a brake disk 44 of the Braking device 14 non-displaceably connected.
- the Brake disc 44 which is provided with an annular brake pad 46 is fitted, is on the rotor 12 facing the inner End of the tubular member 24 axially movable.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Machine Tool Units (AREA)
- Telephone Function (AREA)
- Control Of Turbines (AREA)
Description
- Figur 1
- in längsgeschnittener und abgebrochener Darstellung ein mit einer Drehvorrichtung gemäß einem bevorzugten Ausführungsbeispiel vorliegender Erfindung versehenes Druckluftwerkzeug in ausgeschalteter und gebremster Stellung und
- Figur 2
- eine der Figur 1 entsprechende, abgebrochene Darstellung, jedoch in Betriebsstellung.
Claims (6)
- Druckfluid betriebene Drehvorrichtung (11) für bspw. Druckluftwerkzeuge (10), mit einem Gehäuse (16) und einem in einem vorderen Gehäuseteil (17) rotierbar angeordneten Rotor (12), in dessen Turbinenteil das unter Druck stehende Fluid strömen kann, mit einer Bremseinrichtung (14) und mit einem mit der Bremseinrichtung (14) in Wirkverbindung stehenden Schalter (36) für das Druckfluid, der an einem hinteren Gehäuseteil (21) im Zuge eines Druckfluid-Zuführkanals (26) angeordnet ist, dadurch gekennzeichnet, dass ein das hintere Gehäuseteil (21) im Bereich des Zuführkanals (26) umgebender Schiebeschalter (36) vorgesehen ist, der mit axial gerichteten Steuerstiften (41) versehen ist, die mit einer Bremsscheibe (44) der Bremseinrichtung (14) verschiebefest verbunden sind.
- Drehvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Steuerstifte (41) in einem und durch einen Deckel (23) des Gehäuses (16) geführt sind.
- Drehvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Gehäusedeckel (23) mit Entlüftungsöffnungen (48) versehen ist.
- Drehvorrichtung nach mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Zuführkanal (26) im hinteren Gehäuseteil (21) unterbrochen und jedes Ende (27, 28) des Zuführkanals (26) mit im hinteren Gehäuseteil (21) angeordneten radialen Überströmkanälen (31, 32) verbunden ist, deren Austrittsenden vom Schiebeschalter (36) überdeckbar sind.
- Drehvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Schiebeschalter (36) eine innere Druckfluid-Ringnut (37) aufweist, deren Breite dem axialen Abstand der Überströmkanäle (31, 32) von den beiden Enden (27, 28) des Zuführkanals (26) entspricht.
- Drehvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zu beiden Seiten der Ringnut (37) im Schiebeschalter (36) Dichtungsringe (38, 39, 40) vorgesehen ist, von denen der mittlere Dichtungsring (40) die beiden Überströmkanäle (31, 32) trennt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20103600U | 2001-03-01 | ||
DE20103600U DE20103600U1 (de) | 2001-03-01 | 2001-03-01 | Druckluftwerkzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1236865A1 EP1236865A1 (de) | 2002-09-04 |
EP1236865B1 true EP1236865B1 (de) | 2005-11-02 |
Family
ID=7953708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02002426A Expired - Lifetime EP1236865B1 (de) | 2001-03-01 | 2002-02-01 | Druckluftwerkzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US6644420B2 (de) |
EP (1) | EP1236865B1 (de) |
AT (1) | ATE308673T1 (de) |
DE (2) | DE20103600U1 (de) |
ES (1) | ES2249499T3 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7223069B2 (en) * | 2005-07-12 | 2007-05-29 | Air Turbine Technology, Inc. | Rotary tool |
DE102005062887A1 (de) * | 2005-12-29 | 2007-07-05 | Robert Bosch Gmbh | Handwerkzeugmaschine mit einer Turbineneinheit |
JP5437861B2 (ja) * | 2010-03-09 | 2014-03-12 | 株式会社マキタ | 電動工具 |
DE202010013938U1 (de) | 2010-09-27 | 2010-12-09 | Schmid & Wezel Gmbh & Co. | Handwerkzeug mit einem als Griffteil eingerichteten Gehäuse |
DE202010013940U1 (de) | 2010-09-27 | 2010-12-09 | Schmid & Wezel Gmbh & Co. | Pneumatisch angetriebenes Handwerkzeug mit einer modularen Turbine |
DE202010013939U1 (de) | 2010-09-27 | 2010-12-23 | Schmid & Wezel Gmbh & Co. | Handwerkzeug mit einem Drehantrieb und einer Bremse |
CN110177659B (zh) * | 2017-01-13 | 2022-10-18 | 株式会社牧田 | 电动工具 |
CA3147299A1 (en) * | 2019-06-12 | 2020-12-17 | First Eastern Equities Limited | Dual speed rotary tool |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3709630A (en) * | 1969-10-28 | 1973-01-09 | Howmet Int Inc | Pneumatic motor for medical instruments |
US3952814A (en) * | 1975-03-14 | 1976-04-27 | Mikhail Lvovich Gelfand | Impact wrench |
US4141671A (en) * | 1977-04-20 | 1979-02-27 | Tarsoly Balazs K | Tool gas turbine motor |
US4776752A (en) * | 1987-03-02 | 1988-10-11 | Davis Lynn M | Speed governed rotary device |
US5186603A (en) * | 1990-09-29 | 1993-02-16 | Nitto Kohki Co., Ltd. | Air motor |
KR950001368Y1 (ko) * | 1991-04-23 | 1995-03-03 | 미끼야 도시오 | 에어 회전공구의 브레이크 장치 |
US5439346A (en) * | 1993-09-16 | 1995-08-08 | Air Turbine Technology, Inc. | Pneumatic pressure automatic braking mechanism |
FR2776220B1 (fr) * | 1998-03-19 | 2000-05-05 | Maire Charles Ets | Visseuse pneumatique |
-
2001
- 2001-03-01 DE DE20103600U patent/DE20103600U1/de not_active Expired - Lifetime
-
2002
- 2002-02-01 EP EP02002426A patent/EP1236865B1/de not_active Expired - Lifetime
- 2002-02-01 ES ES02002426T patent/ES2249499T3/es not_active Expired - Lifetime
- 2002-02-01 DE DE50204736T patent/DE50204736D1/de not_active Expired - Lifetime
- 2002-02-01 AT AT02002426T patent/ATE308673T1/de not_active IP Right Cessation
- 2002-03-01 US US10/085,020 patent/US6644420B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE20103600U1 (de) | 2002-07-11 |
US20020121385A1 (en) | 2002-09-05 |
ES2249499T3 (es) | 2006-04-01 |
ATE308673T1 (de) | 2005-11-15 |
US6644420B2 (en) | 2003-11-11 |
DE50204736D1 (de) | 2005-12-08 |
EP1236865A1 (de) | 2002-09-04 |
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