EP0995551A2 - Handführbare Werkzeugmaschine, insbesondere Schrauber oder Bohrschrauber - Google Patents
Handführbare Werkzeugmaschine, insbesondere Schrauber oder Bohrschrauber Download PDFInfo
- Publication number
- EP0995551A2 EP0995551A2 EP99113479A EP99113479A EP0995551A2 EP 0995551 A2 EP0995551 A2 EP 0995551A2 EP 99113479 A EP99113479 A EP 99113479A EP 99113479 A EP99113479 A EP 99113479A EP 0995551 A2 EP0995551 A2 EP 0995551A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- sleeve
- tool spindle
- tool according
- machine 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.)
- Granted
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 handheld Machine tool, especially screwdriver or Drill or impact drill, in whose pistol-like, with a handle on the back Housing a tool spindle to a tool holder runs forward, with the axis of a motor to Drive of the tool spindle extends transversely to this and is coupled with this via an angular gear and the Motor in a housing part arranged in front of the handle. is provided.
- a hammer drill with such a structure is from the DE 30 28 464 A1 known.
- the engine in front of the handle With the motor axis approximately parallel to A short design is possible.
- the engine is not in the handle, but in its own Housing part is housed, the handle can be slim be designed.
- DE 30 28 464 A1 is the transmission through which the Motor the tool drive spindle and a hammer mechanism drives, arranged under the tool spindle. Thereby the overall height of the machine and the distance increase the handle from the tool drive spindle. Moreover is no device for in DE 30 28 464 A1 Torque setting provided.
- EP 0 408 985 A2 there is an electric hand tool described in which the housing is constructed like a pistol and the electric motor is arranged in the pistol handle is. A bevel gear meshes with the motor shaft. however axially immovable on the rear part the tool spindle is mounted. The protruding one Housing part only serves the tool spindle of the Device and possibly some other gear parts, also included for torque limitation. A possible Execution is not to be found in EP 0 408 985 A2.
- the DE 40 38 502 C2 is a hand-held Power tool with a device for Setting the torque described.
- the Torque setting is dynamic in one Planetary gear integrated.
- the torque pre-selection clutch DE 40 38 502 C2 affects the last one Ring gear of a three-stage planetary gear.
- the switching process from first gear to second gear has no influence to the torque that can be transmitted via the tool spindle.
- In the first gear because of the higher Gear reduction a higher torque on the would be possible to transfer spindle is at DE 40 38 502 C2 only the maximum value that can be set in second gear.
- second gear with the lower gear ratio is the smallest at the Transmittable torque not less than in first gear, although the engine is only one around Transmission factor delivers smaller torque. The possible torque spread is only small.
- the object of the invention is a machine of the beginning mentioned type with a small overall length with a Torque pre-selection clutch.
- the above task is for a Machine tool of the type mentioned by Features of the characterizing part of claim 1 solved.
- a feather of the Torque adjuster can be small, special smaller than in DE 40 38 502 C2. It is a comparatively high one despite the small spring Torque transferable.
- the transmission is preferably a switchable one Planetary gear.
- An electric drill which is mains powered or can be powered by a battery pistol-like housing 1 with a handle 2, the is formed on the rear of the housing 1 and on the one Usual switch arrangement 3 for switching on and off and arranged for the electronic speed setting is.
- the handle 2 is ergonomically slim and domed.
- At the front of the housing 1 is one Tool holder 4 provided.
- the longitudinal axis is designated W and the can be driven by an electric motor 6.
- the motor 6 is not in the gun-like housing 1, but in housed its own housing part 7.
- the Housing part 7 projects beyond the housing 1 and lies in front of the Handle 2, approximately parallel to this. Between the Handle 2 and the housing part 7 there is a free space 8, which is large enough to grip 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 the 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 and the housing part 7 are through at the bottom a housing cross bar delimiting the free space 8 downwards 9 connected, the mechanical stabilization and the implementation of electrical, between the Switch 3 and the motor 6 trending Connection lines serves. If the machine is one with a battery operated machine, then can be Cross bar 9 releasably attach a battery pack. The machine thus has an overall Q design. In the free space 8 lies another switch 3 '' for reversing the direction of rotation Motors 6.
- the handle 2 especially its rear zone 2 '' on the the palm of the user's hand is up to or almost up to the height of the axis W of the tool spindle 5, so that pressure is applied to the tool spindle 5 by hand and thus the tool is practically lever-free can be.
- the focal points of the 1 housed, described in more detail below Gear arrangement and that in the housing part 7 housed motor, and possibly the battery pack each close to the user's hand what the Manageability improved. Since the motor axis M and the Axis W of the tool spindle 5 are at an angle to one another, the hand of the user must only operate the machine absorb little tilting or torque.
- the motor 6 has a conical pinion 10 on it Motor axis M connected to an upper roller bearing 11 and a lower rolling bearing 12 is mounted.
- the pinion 10 engages in a toothing 13 of a gear, in particular Bevel gear 14, a.
- the toothing 13 is forward, so directed to the tool holder 4 or open, the Pinion 10 from the front, i.e. on the tool holder 4 facing side of the bevel gear 14 into the toothing 13 intervenes.
- the information "back” and "front” are on the Axis W of the tool spindle 5 referred to, "rear” closer to handle 2 and "front” closer to Tool holder 4 means.
- the bevel gear 14 is at its rear behind the toothing 13 lying outer circumference 15 by means of a roller bearing, in particular ball bearings 16, rotatable in the housing 1 and axially immovable.
- the tool spindle 5 extends coaxially through the bevel gear 14.
- a sleeve 17 is rotatable on the inner circumference of the bevel gear 14 stored on the tool spindle 5 by means of a further rolling bearing, especially a pair of needle bearings 18, is rotatably and axially displaceably mounted.
- the sleeve 17, like the gear 14, is coaxial with the tool spindle 5 arranged.
- the sleeve 17, which extends through the bevel gear 14, is a switchable rear as sun gear 19 Planetary gear stage 20 trained or registers such a sun gear. Grip in the sun gear 19 Planet gears 21 of the planetary gear stage 20 with one in the direction of the longitudinal axis W for changing gear combable ring gear 22, the coaxial to Tool spindle 5 is mounted.
- the planet gears 21 are arranged on a planet carrier 23.
- the axially displaceable on a pin 26th is arranged.
- the pin 26 is in the housing 1 above of the housing part 7 mounted and not closer by means of a shown handle member, the side outside of the housing 1 is arranged, longitudinally displaceable.
- Shift position (1st gear)
- Figure 1 below the longitudinal axis W is shown
- the ring gear 22 engages with an external toothing 27 in a housing-fixed Tooth 28.
- 2nd gear which in Figure 1 is shown above the longitudinal axis W, engages the ring gear 22 with an internal toothing 29 in a External teeth 30 of the planet carrier 23rd
- the planet carrier 23 can rotate with the Tool spindle 5 to be connected when the Planetary gear stage 20 translation is sufficient.
- a second Planetary gear stage 31 is provided.
- Their sun gear 32 forms the planet carrier 23, which is opposite the Tool spindle 5 is rotatable and with planet wheels 33 combs, which rotate in a ring gear 34, which has a Connection 35 is rotatably held in the housing 1.
- the Planet gears 33 are on a planet gear carrier 36 stored, the non-rotatable with the tool spindle 5 connected is.
- pockets 37 and one of these opposite, on a collar 38 of Sleeve 17 are provided rear end face Hill contours 39 formed. Between pockets 37 and the hill contours 39 are entrainment bodies, for example balls 40.
- a thrust bearing 42 On a front end face 41 of the sleeve 17, specifically of the federal government 38, presses a thrust bearing 42 with a rear disc 43.
- a front, on the thrust bearing 42nd adjacent disc 44 presses over in the housing 1 in a rotationally fixed manner 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 disk 46 to the rear acted upon by a spring from the front, especially helical spring 47, presses.
- the coil spring 47 is preloaded in a housing 1 rotatable, axially displaceable bushing 48, so that the Tension of the coil spring 47 and thus on the sleeve 17 applied axial pressure is adjustable.
- the socket 48 engages with an external contour 49 in an internal thread 50 a manually rotatable from the outside about the longitudinal axis W, hand gripped sleeve 51, which by means of Rings 52, 53 on a front cylindrical extension 54 of the housing 1 rotatable, but axially immovable is held. On the cylindrical extension 54 is the Bushing 48 guided longitudinally.
- the sleeve 48 is longitudinally adjustable and so that the bias of the spring 47 and thus that transferable torque adjustable.
- the tool spindle 5 is at the rear with a roller bearing 55 and at the front in the extension 54 with the roller bearings 18 on the housing 1 stored and sealed by a seal 56.
- the Driving 37 to 40 with the sleeve 17 and the Tool spindle 5 rotates according to the set one Gear.
- the transmissible torque is in first gear according to the translation factor of Planetary gear stage 20 higher than in second gear - at unchanged position of the grip sleeve 51 -.
- the back of the Tool spindle 5 a known, possibly. ratchet device that can be switched off to generate impact and / or a safety clutch can be provided.
- a tool holder is on the tool spindle 5 screw-on tool holder 4 shown.
- the tool spindle 5 in front also be designed so that a quick-change tool holder in it is insertable, which means an axially displaceable handle member and corresponding coupling elements from the tool spindle 5 is detachable.
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)
Abstract
Description
Claims (9)
- Handführbare Werkzeugmaschine, insbesondere Schrauber oder Bohrschrauber oder Schlagbohrschrauber, in deren pistolenartigen, hinten einen Handgriff aufweisenden Gehäuse eine Werkzeugspindel zu einer Werkzeugaufnahme nach vorn verläuft, wobei sich die Achse eines Motors zum Antrieb der Werkzeugspindel quer zu dieser erstreckt und mit dieser über ein Winkelgetriebe gekoppelt ist und der Motor in einem vor dem Handgriff angeordneten Gehäuseteil 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 true EP0995551A2 (de) | 2000-04-26 |
EP0995551A3 EP0995551A3 (de) | 2001-04-25 |
EP0995551B1 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 (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1296181C (zh) * | 2002-05-02 | 2007-01-24 | 布莱克-德克尔公司 | 用于旋转工具的止动机构和扭矩调整机构 |
EP2314421A1 (de) * | 2009-10-20 | 2011-04-27 | Makita Corporation | Batteriebetriebene Werkzeuge |
WO2012143895A1 (en) * | 2011-04-20 | 2012-10-26 | Société de Prospection et d'Inventions techniques SPIT | A balanced gas fastening tool |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7066691B2 (en) | 2002-01-25 | 2006-06-27 | Black & Decker Inc. | Power drill/driver |
DE102009054930B4 (de) * | 2009-12-18 | 2017-07-27 | Robert Bosch Gmbh | Bohrmaschine |
EP4269034A1 (de) * | 2022-04-25 | 2023-11-01 | Hilti Aktiengesellschaft | Dichtgeometrie mit förderstruktur für eine mobile werkzeugmaschine |
Citations (5)
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 |
US4691786A (en) * | 1983-06-30 | 1987-09-08 | Maeda Metal Industries Ltd. | Bolt-nut tightening device having means for preventing abnormal rotation |
EP0408985A2 (de) * | 1989-07-15 | 1991-01-23 | CEKA ELEKTROWERKZEUGE AG + Co.KG | Elektrohandwerkzeug |
DE4038502A1 (de) * | 1990-12-03 | 1992-06-04 | Licentia Gmbh | Handgefuehrte elektrowerkzeugmaschine mit einer einrichtung zum einstellen des drehmoments |
EP0878272A1 (de) * | 1997-05-13 | 1998-11-18 | Atlas Copco Electric Tools GmbH | Bohr-, Bohrschraub- oder Schlagbohrmaschine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
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
Patent Citations (5)
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 |
US4691786A (en) * | 1983-06-30 | 1987-09-08 | Maeda Metal Industries Ltd. | Bolt-nut tightening device having means for preventing abnormal rotation |
EP0408985A2 (de) * | 1989-07-15 | 1991-01-23 | CEKA ELEKTROWERKZEUGE AG + Co.KG | Elektrohandwerkzeug |
DE4038502A1 (de) * | 1990-12-03 | 1992-06-04 | Licentia Gmbh | Handgefuehrte elektrowerkzeugmaschine mit einer einrichtung zum einstellen des drehmoments |
EP0878272A1 (de) * | 1997-05-13 | 1998-11-18 | Atlas Copco Electric Tools GmbH | Bohr-, Bohrschraub- oder Schlagbohrmaschine |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1296181C (zh) * | 2002-05-02 | 2007-01-24 | 布莱克-德克尔公司 | 用于旋转工具的止动机构和扭矩调整机构 |
EP2314421A1 (de) * | 2009-10-20 | 2011-04-27 | Makita Corporation | Batteriebetriebene Werkzeuge |
CN102039582A (zh) * | 2009-10-20 | 2011-05-04 | 株式会社牧田 | 充电式电动工具 |
CN102039582B (zh) * | 2009-10-20 | 2013-07-03 | 株式会社牧田 | 充电式电动工具 |
US8579043B2 (en) | 2009-10-20 | 2013-11-12 | Makita Corporation | Battery-powered power tools |
RU2551736C2 (ru) * | 2009-10-20 | 2015-05-27 | Макита Корпорейшн | Приводной инструмент с питанием от аккумуляторной батареи |
WO2012143895A1 (en) * | 2011-04-20 | 2012-10-26 | Société de Prospection et d'Inventions techniques SPIT | A balanced gas fastening tool |
Also Published As
Publication number | Publication date |
---|---|
EP0995551A3 (de) | 2001-04-25 |
EP0995551B1 (de) | 2003-10-08 |
DE19849071C2 (de) | 2001-03-08 |
DE19849071A1 (de) | 2000-05-04 |
DE59907272D1 (de) | 2003-11-13 |
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