EP1236865A1 - Druckluftwerkzeug - Google Patents
Druckluftwerkzeug Download PDFInfo
- Publication number
- EP1236865A1 EP1236865A1 EP02002426A EP02002426A EP1236865A1 EP 1236865 A1 EP1236865 A1 EP 1236865A1 EP 02002426 A EP02002426 A EP 02002426A EP 02002426 A EP02002426 A EP 02002426A EP 1236865 A1 EP1236865 A1 EP 1236865A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing part
- feed channel
- slide switch
- switch
- rear housing
- 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.)
- Granted
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 pressure fluid operated turning device for e.g. compressed air tools according to the preamble of claim 1.
- the switch forms at least partially rear housing part and is opposite the front Housing part and a housing cover receiving it over a thread can be turned. With this twisting the Pressurized fluid supply released or closed.
- the Braking device is spring-loaded and is at Close the pressure fluid supply by turning the Switch pressed on the rotor.
- This known rotating device is structurally relative complex and requires a large number of components.
- the opening and closing of the Pressure fluid supply not with one hand accomplish and therefore impractical and beyond time consuming due to the large number of revolutions required.
- the object of the present invention is a To create a rotating device of the type mentioned, the manages with fewer components and which are simpler and to a standstill more quickly via a fluid switch can be brought.
- the Switch is designed as a simple slide switch not only in one-hand operation but also very quickly Way to operate. Due to the non-shifting Connection of the brake disc and the slide switch is immediate opening and without additional components Closing the braking device using the slide switch possible.
- the pneumatic tool 10 shown in the drawing has a rotating device 11, for example a rotor 12. has in the form of a turbine with compressed air can be acted upon and can thereby be set in rotation.
- the supply of compressed air is by means of a Slide switch 13 can be 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 Effect comes.
- the pneumatic tool 10 has an elongated one Housing 16, which is connected to the rotor 12 in a rotationally fixed manner Surrounds drive shaft 18, which at its out of the housing 16th protruding end is provided with a chuck 19.
- the drive shaft 18 is both close to the rotor 12 Area as well as on the rotor 12 and the chuck 19 near area in the housing 16 rotatably mounted.
- a front housing part 17 is on its one connectable rear housing part 21 facing end 22 pot-shaped.
- the cup-shaped end 22 is from a cover part 23 of the rear housing part 21 locked.
- the cover part 23 is from a pipe part 24 of the rear housing part 21 penetrated, which pipe part 24 axially an axial feed channel 26 for the Compressed air.
- 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, the feed channel 26 is in the Pipe part 24 interrupted. In the facing each other closed ends 27 and 28 of the feed channel 26 open several each evenly distributed over the circumference arranged radial overflow channels 31 and 32, the Extend the outer circumference of the tubular part 24.
- a sleeve-shaped slide 36 On the one smooth cylindrical outer periphery 29 provided tube part 24, which has a connection end 33 for one Compressed air hose connection is a sleeve-shaped slide 36 axially movable.
- 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 11.
- the slide 36 has an inner annular groove 37 which in the Is capable of radial overflow channels 31 and 32 of the two closed feed channel ends 27 and 28 to each other connect. According to FIG.
- the annular groove 37 therefore has a width that is the distance of the radial overflow channels 31 and 32 corresponds, so that in the switched-on position of the slide switch 36, the exit openings of the radial Overflow channels 31 and 32 covered by the annular groove 37 and are connected.
- O-ring 38 and two O-rings 39 and 40 are on both sides of the annular groove 37 an O-ring 38 and two O-rings 39 and 40 arranged, respectively when switched on, there is a leak to the outside prevented and of which the indirect O-ring 40 in the Air supply interrupted state of the Slide switch 36 at a point between the two radial overflow channels 31 and 32 is arranged ( Figure 1).
- the overflow channels 31 are not in this position connected to the overflow channels 32 so that the Compressed air supply is interrupted.
- the sleeve-shaped slide 36 has several, for example three arranged evenly distributed over the circumference Control pins 41 which extend in the axial direction.
- the control pins 41 are in at one end Blind holes 42 of the sleeve-shaped slide 36 held, penetrate guide holes 43 in Cover part 23 axially movable and are inside of it the cup-shaped end 22 of the front housing part 17 lying end with a brake disc 44 Braking device 14 connected fixedly.
- the Brake disc 44 with an annular brake pad 46 is equipped, is on the inner facing the rotor 12 End of the tubular part 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)
Abstract
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 true EP1236865A1 (de) | 2002-09-04 |
EP1236865B1 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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3709630A (en) * | 1969-10-28 | 1973-01-09 | Howmet Int Inc | Pneumatic motor for medical instruments |
US5186603A (en) * | 1990-09-29 | 1993-02-16 | Nitto Kohki Co., Ltd. | Air motor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3709630A (en) * | 1969-10-28 | 1973-01-09 | Howmet Int Inc | Pneumatic motor for medical instruments |
US5186603A (en) * | 1990-09-29 | 1993-02-16 | Nitto Kohki Co., Ltd. | Air motor |
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 |
EP1236865B1 (de) | 2005-11-02 |
US6644420B2 (en) | 2003-11-11 |
DE50204736D1 (de) | 2005-12-08 |
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