EP0995551B1 - Handführbare Werkzeugmaschine, insbesondere Schrauber oder Bohrschrauber - Google Patents
Handführbare Werkzeugmaschine, insbesondere Schrauber oder Bohrschrauber Download PDFInfo
- Publication number
- EP0995551B1 EP0995551B1 EP99113479A EP99113479A EP0995551B1 EP 0995551 B1 EP0995551 B1 EP 0995551B1 EP 99113479 A EP99113479 A EP 99113479A EP 99113479 A EP99113479 A EP 99113479A EP 0995551 B1 EP0995551 B1 EP 0995551B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- sleeve
- tool
- tool spindle
- power tool
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Definitions
- the invention relates to a handleable Machine tool, in particular screwdriver or Drill or impact driver, in whose pistol-like, with a handle at the back Housing a tool spindle to a tool holder runs forward, with the axis of a motor for Drive the tool spindle extending transversely to this and is coupled with this via an angle gear and the Motor in a arranged in front of the handle housing part is provided.
- a hammer drill with such a structure is known from DE 30 28 464 A1.
- the engine in front of the handle, with the motor axis approximately parallel to the Handle runs, a short design is possible.
- the engine is not in the handle, but in its own Housing part is housed, the handle can slim be designed.
- DE 30 28 464 A1 the transmission, via which the Motor the tool drive spindle and a striking mechanism drives, arranged under the tool spindle. Thereby increases the height of the machine and the distance the handle of the tool drive spindle. Furthermore is in DE 30 28 464 A1 no device for Adjustment of the torque provided.
- EP 0 408 985 A2 is an electric hand tool described, in which the housing constructed like a pistol is and the electric motor arranged in the pistol grip is. With the motor shaft meshes a bevel gear that rotates, but axially immovable on the rear part the tool spindle is mounted.
- the forward projecting Housing part serves only to the tool spindle of the Store equipment and, if necessary, some other gear parts, also to absorb the torque limit.
- a possible Version can not be found in EP 0 408 985 A2.
- DE 40 38 502 C2 is a hand-held Electric machine tool with a device for Setting the torque described.
- the Torque setting is dynamic in one Integrated planetary gear.
- the torque pre-selection clutch DE 40 38 502 C2 acts on the last Ring gear of a three-stage planetary gear.
- the switching process from first gear to second gear has no influence on the transmissible via the tool spindle torque.
- first gear due to the higher Gear reduction a higher torque at the Spindle transfer is possible at the DE 40 38 502 C2 only the maximum value adjustable, the also in second gear.
- second gear with the lower gear ratio is the smallest at the Spindle transmissible torque not smaller than in first gear, although the engine only one around the Translation factor delivers smaller torque. The possible torque spread is therefore only small.
- the object of the invention is to provide a machine of the initially mentioned type with small length with a Equip torque selector coupling.
- the above object is one Machine tool of the type mentioned by the Features of the characterizing part of claim 1 solved.
- a spring of Torque adjuster can thus small, special smaller than in DE 40 38 502 C2, are designed. It is thus a comparatively high despite small spring Torque transferable.
- the transmission is a reversible Planetary gear.
- the largest, transferable in first gear Torque about the reduction factor of the gearbox is greater than in second gear and the smallest in second gear transmissible torque around the Reduction factor is smaller than in first gear. It is thus a big spread of the device adjustable, acting on the tool torques reached.
- An electric driller that is mains powered or can be powered by a battery, instructs pistol-like housing 1 with a handle 2, the is formed on the rear of the housing 1 and on the one usual switch assembly 3 for switching on and off and arranged for the electronic speed adjustment is.
- the handle 2 is ergonomically slim and slim vaulted designed. Front of the housing 1 is a Tool holder 4 is provided.
- the housing 1 In the housing 1 is a rear to the front Tool holder 4 continuous tool spindle. 5 stored, whose longitudinal axis is designated W and the is driven by an electric motor 6.
- the motor 6 is not in the gun-like housing 1, but in housed a separate housing part 7.
- the Housing part 7 projects beyond the housing 1 and is located in front of the Handle 2, approximately parallel to this. Between the Handle 2 and the housing part 7 is a free space 8, which is large enough to encompass the handle 2.
- the motor 6 is mounted in the housing part 7 so that its Motor axis M approximately parallel to the longitudinal direction of Handle 2 runs.
- the motor axis M and the Handle 2 are at an angle other than 90 ° from about 60 to 80 °, for example 75 °, transversely or obliquely to the axis W of the tool spindle 5. This angle is so chosen that the machine on the handle 2 ergonomic is manageable.
- the handle 2 especially its rear zone 2 '', at the the palm of the user rests, extends to or almost up to the height of the axis W of the tool spindle 5, so that by hand, a pressure on the tool spindle. 5 and thus practiced the tool virtually lever-free can be.
- the motor 6 has a conical pinion 10 at its Motor axis M, which at an upper rolling bearing 11 and a lower roller bearing 12 is mounted.
- the pinion 10 engages in a toothing 13 of a gear, in particular Bevel gear 14, a.
- the teeth 13 is forward, so directed to the tool holder 4 or open, wherein the Pinion 10 from the front, so on the tool holder. 4 facing side of the bevel gear 14 in the teeth 13th intervenes.
- the information “back” and "front” are on the Axis W of the tool spindle 5, where "back" closer to the handle 2 and "front” closer to the Tool holder 4 means.
- the bevel gear 14 is at its rear of the teeth 13th lying outer periphery 15 by means of a rolling bearing, in particular ball bearings 16, rotatable in the housing 1 and stored axially immovable.
- the tool spindle 5 Coaxially extends through the bevel gear 14th
- a sleeve 17 is rotatable mounted on the tool spindle 5 by means of a another rolling bearing, especially a needle bearing pair 18, is mounted rotatably and axially displaceable.
- the sleeve 17 is like the gear 14 coaxial with the tool spindle. 5 arranged.
- the planet gears 21 are arranged on a planet carrier 23.
- the planet 23 can rotatably with the Tool spindle 5 be connected when the of the Planetary gear 20 created translation suffices.
- a second Planetary gear stage 31 is provided.
- Their sun wheel 32 forms the planet carrier 23
- opposite to the Tool spindle 5 is rotatable and planetary gears 33rd meshes, which rotate in a ring gear 34, which has a Connection 35 rotationally fixed in the housing 1 is held.
- the Planet gears 33 are on a planet carrier 36 stored, which rotatably with the tool spindle 5 connected is.
- a thrust bearing 42 On a front end face 41 of the sleeve 17, specifically of the collar 38, pushes a thrust bearing 42 with a rear disc 43.
- a front, on the thrust bearing 42nd fitting disc 44 presses in the housing 1 rotatably and axially displaceably guided pins 45 to the rear on the thrust bearing 42 and thus the sleeve 17.
- the pins 45 are from another disc 46 to the rear energized, on the front of a spring, in particular coil spring 47, presses.
- the spiral spring 47 is biased in a relative to the housing. 1 rotatably, axially displaceable sleeve 48, so that the Tension of the coil spring 47 and thus the on the sleeve 17 exerted axial pressure is adjustable.
- the socket 48 engages with an outer contour 49 in an internal thread 50 a manually rotatable from the outside about the longitudinal axis W, with the hand graspable grip sleeve 51, which means Rings 52, 53 on a front cylindrical extension 54 the housing 1 rotatably, but axially immovable is held.
- the cylindrical extension 54 On the cylindrical extension 54 is the Socket 48 guided lähgsverschiebbing.
- the tool spindle 5 is at the rear with a roller bearing 55 and forward in the extension 54 with the bearings 18 on the housing 1 and sealed by a seal 56.
- first gear is the transmissible torque according to the translation factor of Planetary gear 20 higher than in second gear - at unchanged position of the grip sleeve 51 -.
- the braking torque of the tool exceeds this set torque, then ratchet the Schanzenkonturen 29 on the driving body 40, wherein the sleeve 17 moves axially and the bevel gear 14th this no longer takes, so that the Planetary gear stages 20,31 no longer taken become.
- switchable ratchet device for impact generation and / or a safety coupling may be provided at the rear of the Tool spindle 5 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Portable Power Tools In General (AREA)
Description
Claims (9)
- Handführbare Werkzeugmaschine, insbesondere Schrauber oder Bohrschrauber oder Schlagbohrschrauber, in deren pistolenartigen, hinten einen Handgriff (2) aufweisenden Gehäuse (1) eine Werkzeugspindel (5) zu einer Werkzeugaufnahme (4) nach vorn verläuft, wobei sich die Achse eines Motors (6) zum Antrieb der Werkzeugspindel quer zu dieser erstreckt und mit dieser über ein Winkelgetriebe (10,14) gekoppelt ist und der Motor in einem vor dem Handgriff angeordneten Gehäuseteil (7) vorgesehen ist,
dadurch gekennzeichnet, daß das Winkelgetriebe(10,14) zwischen einem Getriebe (20,31) und einer Drehmomenteinstelleinrichtung(57) angeordnet ist. - Werkzeugmaschine nach Anspruch 1,
dadurch gekennzeichnet, daß das Winkelgetriebe (10,14) ein Zahnrad(14) aufweist, das koaxial zur Werkzeugspindel(5) gelagert ist, die sich durch das Zahnrad(14) erstreckt, daß koaxial zum Zahnrad (14) eine Hülse(17) gelagert ist, daß die Hülse(17) die Werkzeugspindel(5) über ein Getriebe(20,31) antreibt, das im Gehäuse(1) hinter dem Zahnrad(14) angeordnet ist, daß die Hülse(17) mittels einer Drehmitnahmeeinrichtung(37 bis 40) mit dem Zahnrad(14) derart gekoppelt ist, daß das Zahnrad(14) die Hülse(17) nur bis zu einem einstellbaren maximalen Drehmoment mitnimmt, und daß eine Einstelleinrichtung(42 bis 53) für das Drehmoment vor dem Zahnrad(14) koaxial zur Werkzeugspindel(5) angeordnet ist. - Werkzeugmaschine nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß als Drehmitnahmeeinrichtung Mitnahmekörper(40) zwischen Schanzenkonturen(39) und Taschen(37) vorgesehen sind. - Werkzeugmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet; daß die Hülse(17) drehbar und axial verschieblich auf der Werkzeugspindel(5) gelagert ist. - Werkzeugmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Drehmitnahmeeinrichtung(37 bis 40) innerhalb des Zahnrads(14) liegt. - Werkzeugmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Hülse(17) eine vordere Stirnfläche(41) aufweist, auf die die Einstelleinrichtung(42 bis 53) wirkt. - Werkzeugmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Einstelleinrichtung(42 bis 53) über ein Axiallager(42) auf die Hülse(17) drückt und eine in ihrer Vorspannung durch axiale Verschiebung einer Buchse(48) einstellbare Feder(47) aufweist, wobei die Buchse(48) durch Drehen einer zur Werkzeugspindel(5) koaxialen Griffhülse(51) axial verstellbar ist. - Werkzeugmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das Getriebe ein schaltbares Planetengetriebe ist, wobei die Hülse(17) ein Sonnenrad(19) des Planetengetriebes bildet oder mit diesem verbunden ist. - Werkzeugmaschine nach Anspruch 8,
dadurch gekennzeichnet, daß der ersten, schaltbaren Planetengetriebestufe(20) eine zweite Planetengetriebestufe(31) nachgeschaltet ist, deren Sonnenrad(32) der Planetenträger(23) der ersten Getriebestufe bildet und deren Planetenträger mit der Werkzeugspindel(5) drehfest verbunden ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19849071 | 1998-10-24 | ||
DE19849071A DE19849071C2 (de) | 1998-10-24 | 1998-10-24 | Handführbare Werkzeugmaschine, insbesondere Schrauber oder Bohrschrauber |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0995551A2 EP0995551A2 (de) | 2000-04-26 |
EP0995551A3 EP0995551A3 (de) | 2001-04-25 |
EP0995551B1 true EP0995551B1 (de) | 2003-10-08 |
Family
ID=7885511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99113479A Expired - Lifetime EP0995551B1 (de) | 1998-10-24 | 1999-07-13 | Handführbare Werkzeugmaschine, insbesondere Schrauber oder Bohrschrauber |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0995551B1 (de) |
DE (2) | DE19849071C2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4269034A1 (de) * | 2022-04-25 | 2023-11-01 | Hilti Aktiengesellschaft | Dichtgeometrie mit förderstruktur für eine mobile werkzeugmaschine |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7066691B2 (en) | 2002-01-25 | 2006-06-27 | Black & Decker Inc. | Power drill/driver |
GB0210029D0 (en) * | 2002-05-02 | 2002-06-12 | Black & Decker Inc | Detent mechanism |
JP5479023B2 (ja) * | 2009-10-20 | 2014-04-23 | 株式会社マキタ | 充電式電動工具 |
DE102009054930B4 (de) * | 2009-12-18 | 2017-07-27 | Robert Bosch Gmbh | Bohrmaschine |
FR2974321B1 (fr) * | 2011-04-20 | 2014-03-21 | Prospection & Inventions | Outil de fixation a gaz, equilibre |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3028464A1 (de) * | 1980-07-26 | 1982-03-18 | C. & E. Fein Gmbh & Co, 7000 Stuttgart | Tragbares schlagwerkzeug |
JPS6011769U (ja) * | 1983-06-30 | 1985-01-26 | 前田金属工業株式会社 | 異常回転防止具付きボルト・ナツト締付具 |
EP0408985A3 (en) * | 1989-07-15 | 1992-02-26 | Ceka Elektrowerkzeuge Ag + Co.Kg | Hand held electric tool |
DE4038502C2 (de) * | 1990-12-03 | 1994-02-17 | Atlas Copco Elektrowerkzeuge | Handgeführte Elektrowerkzeugmaschine mit einer Einrichtung zum Einstellen des Drehmoments |
JPH0731277U (ja) * | 1993-11-11 | 1995-06-13 | 前田金属工業株式会社 | ナット締付機 |
JP3291609B2 (ja) * | 1996-02-13 | 2002-06-10 | 株式会社マキタ | 電動工具のクラッチ機構 |
DE19719923C2 (de) * | 1997-05-13 | 1999-03-18 | Atlas Copco Electric Tools | Bohr-, Bohrschraub- oder Schlagbohrmaschine |
-
1998
- 1998-10-24 DE DE19849071A patent/DE19849071C2/de not_active Expired - Fee Related
-
1999
- 1999-07-13 EP EP99113479A patent/EP0995551B1/de not_active Expired - Lifetime
- 1999-07-13 DE DE59907272T patent/DE59907272D1/de not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4269034A1 (de) * | 2022-04-25 | 2023-11-01 | Hilti Aktiengesellschaft | Dichtgeometrie mit förderstruktur für eine mobile werkzeugmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP0995551A3 (de) | 2001-04-25 |
EP0995551A2 (de) | 2000-04-26 |
DE19849071C2 (de) | 2001-03-08 |
DE19849071A1 (de) | 2000-05-04 |
DE59907272D1 (de) | 2003-11-13 |
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