EP0930957B1 - Elektrowerkzeugmaschine - Google Patents
Elektrowerkzeugmaschine Download PDFInfo
- Publication number
- EP0930957B1 EP0930957B1 EP98933451A EP98933451A EP0930957B1 EP 0930957 B1 EP0930957 B1 EP 0930957B1 EP 98933451 A EP98933451 A EP 98933451A EP 98933451 A EP98933451 A EP 98933451A EP 0930957 B1 EP0930957 B1 EP 0930957B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cam
- striker
- spindle
- power tool
- tool according
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
- B25D2211/06—Means for driving the impulse member
- B25D2211/062—Cam-actuated impulse-driving mechanisms
- B25D2211/064—Axial cams, e.g. two camming surfaces coaxial with drill spindle
Definitions
- the invention relates to an electric machine tool for rotating and / or striking tools, such as drilling and / or Percussion hammer or hammer drill, which in the Preamble of claim 1 defined genus.
- the driver unit comprises an eccentric, the one on a gear wheel driving the work spindle Layshaft sits and one over a needle bearing Breakthrough articulation sleeve accommodates, and an elastic compliant driver link that is transverse to the countershaft aligned axis tiltable fixed in the machine housing is.
- the driver link points away from the axis Linkage-extending lever, which in its breakthrough engages, and one perpendicular to it from the axis itself extending, two - leg bracket on his free end closed in a loop and with play between two frets formed on the racket is articulated.
- the Bat is in the hollow drive spindle with Sliding game added, with an inserted O-ring has a dampening effect on the racket and its automatic Moving prevented. Between the tool shank and the A striker or firing pin is arranged in the racket.
- the driver link is moved back and forth over the eccentric driven here, with only the vertical deflections of the eccentric are transferred to the lever while the Cross movement of the anchor sleeve through the in this direction widened breakthrough does not reach the lever.
- the driver member performs a reciprocating motion its axis out.
- the bat is reflected after the hard impact and flies backwards on the also moving back bracket of the Driver link too. Touched with good coordination of the striking mechanism the front waistband of the driver link only slightly or not. After driving through its engine side The driver member comes into contact with the dead center again front waistband of the racket.
- the bracket is due to the kinetic energy of the racket bent backwards.
- the energy resulting from the racket rebound thus delivered to the elastic driver member and therein as Spring energy stored.
- Forward movement of the bracket accelerates the racket both due to the forward movement of the driver member as also due to the spring-back bracket in the direction on the tool, with the racket usually higher Speeds reached as the driving strap. This leads to the detachment of the racket from the driver member.
- the bat then flies a certain distance freely until another Impact on the die and tool occurs.
- WO-A-7901041 describes an electric machine tool with a known rotating and striking drive, which according to the Features of the preamble of claim 1 a rotating drivable work spindle, which in turn a Tool holder drives.
- the machine also has one mechanical striking mechanism, one in its axial direction accelerated, directly or indirectly, the shank of the tool beating bat and a die Accelerating the club from a rotational movement has dissipative drive unit, wherein the driver unit with the work spindle synchronously rotating, axially displaceable Arranged sensing element, which between two to Working spindle arranged in a non-rotatable, ring-shaped manner Curve tracks with the work spindle pointing in the axial direction Surveys and in-depths.
- the two curved tracks According to WO-A-7901041, the side edges are sinusoidal running groove embedded in the work spindle.
- the Tracer consists of two balls, one hand in this groove intervene and on the side flanks forming the curved tracks unroll the groove, with the balls on both cam tracks issue.
- the two balls are radial in one circumferential recess used on the outside of a the racket of the striking mechanism, axially displaceable Cylinder is inserted.
- the as Spheres acting on the sinusoidal spheres Curve tracks one Rotary movement of the work spindle in an axial movement of the Cylinder of the striking mechanism implemented.
- the implementation the axial movement of the piston into a rotational movement of the Flywheel or vice versa takes place in that one with the Piston connected pin arranged transversely to its longitudinal axis engages in a guide groove in the hub of the flywheel, wherein the guide groove one in the circumferential direction of the hub has sinusoidal shape with axially pointing Surveys and deepening.
- the two side edges of this groove thus form two sinusoidal cam tracks, which as the Pin of the piston acting in the axial direction move down.
- the pen is in constant contact with both curved tracks, d. H. with both sides of the sinusoidal groove.
- the power tool according to the invention with the characteristic features of claim 1, in contrast, the Advantage that constructed by the invention mechanical impact mechanism dispenses with a countershaft and so that a higher spindle speed can be realized.
- mechanical impact mechanism dispenses with a countershaft and so that a higher spindle speed can be realized.
- axial elevations and depressions are correspondingly many Impacts achieved per spindle revolution.
- Striking mechanism according to the invention can be very inexpensive Electric hand tool focusing on small Tool diameter are manufactured in which the Lubrication effort is quite low.
- the spring accumulator designed as compression springs that are simple and are inexpensive to manufacture and assemble.
- Rotary hammer as an embodiment of a general, preferably hand-held power tool with rotating and / or striking tool, has a housing 10 and one in the housing 10 rotating and axially displaceable mounted, sleeve-shaped work spindle 11, also spindle sleeve called, and an electric motor, not shown here for the rotary drive of the work spindle 11.
- a tool holder 12 formed in which the shaft 13 of a tool is rotatably and limited axially displaceable is included.
- the Working spindle 11 is rotated via a gear 14 offset that on the away from the tool holder 12
- Spindle end of the work spindle 11 is non-rotatably and with a Drive pinion 14 meshes, the one at the shaft end in the housing 10 mounted drive shaft 15 is formed.
- the drive shaft 15 is via a transmission, not shown here, with the Output shaft of the electric motor connected or forms the Output shaft itself.
- a mechanical hammer mechanism 16 is for hammer drilling operation provided one in its axial direction accelerated and on a firing pin or striker 17 the shaft 13 of the held in the tool holder 12 Tool hitting racket 18 and a die Acceleration of the bat 18 from a rotational movement the work spindle 11 has a diverting driver unit 20.
- the racket 18 and the striker 17 are axial with play slidably in the sleeve-shaped drive spindle 11 added.
- the displacement movement of the striker 17 is in Direction towards the racket 18 through an in an inner groove in the work spindle 11 inserted snap ring 19 and Tool holder 12 through the front end of the shaft 13 of the tool limited.
- the driver unit 20 includes one with the work spindle 11 synchronously rotating, axially displaceable Scanning member 21, which is between two parallel, coaxial to Working spindle 11 arranged in a rotationally fixed manner in the housing 10, annular cam tracks 22, 23 are guided with axial play, and two effective in the displacement of the racket 18, spring acting in opposite directions to each other by the Scanning member 21 can be clamped directly or indirectly, the Spring accumulator preferably designed as compression springs 24, 25 are.
- a development of the cam tracks 22, 23 is shown in FIG. 3 shown in detail, arrow 28 in Fig. 3 in Axis direction of the work spindle 11 is and Tool holder 12 points.
- the elevations 221 and 231 and depressions 222 and 232 are represented in the example by a sine curve, with several over the circumference of the curved tracks 22, 23 There are periods of a sine curve. To be favoured three or five periods are provided so that on each Cam track 22 or 23, therefore three or five elevations 221 or 231 and three and five depressions 222 and 232 respectively are.
- the number of elevations and colinear in the axial direction Specializations depend on the desired number of Impacts on the shank 13 of the tool during one Rotation of the work spindle 11.
- the cam tracks 22 and 23 are each on one Cam 26 and 27 formed.
- the cam 26 is rigidly fixed in the housing 10.
- the cam disc 27 is on preferably three on one coaxial to the work spindle 11 Dividing circle arranged, against each other by 120 ° circumferential angle staggered bolts 29 slidably guided.
- the Bolts 29 are clamped in the machine housing 10 and take each have a pressure spring 30, which is between the two Cam discs 26.27 supports. Under the effect of Pressure springs 30, the cam disc 27 is located on the one Working spindle 11 by means of two disks 31, 32 axially fixed axial bearing 33.
- the Sliding mobility of the cam disc 27 serves to close and Switching off the striking mechanism 16.
- the complete shutdown of the Striking mechanism 16 required.
- the machine housing 10 a manually operated shutdown element 37 in the form of a 180 ° rotatable toggle handle arranged in the eccentric Dowel pin 38 is inserted.
- the shutdown element 37 By turning the shutdown element 37 by 180 °, the dowel pin 38 pivots in the displacement Cam 27 and lies in the basic position of the Cam 27, which this under unloaded tool the restoring force of the pressure springs 30, as a stop immediately in front of the cam disc 27.
- Driver unit 20 sits the scanning member 21 with a ring part 39 with play on the racket 18 and protrudes radially from the Ring part 39 protruding scanning finger 40 by a Axial slot 41 in the spindle sleeve 11 through between the cam tracks 22, 23 on the two cams 26, 27.
- the scanning finger 40 is also developing the cam tracks 22,23 indicated in Fig. 3.
- the two compression springs 24.25 Driver unit 20 are pushed onto the racket 18 and are based on the one hand on the other in the axial direction facing end faces of the ring member 39 and on the other hand radial shoulders 42, 43 formed on the racket 18.
- the cam track 22 accelerates with each survey 221 the racket 18 in the direction of the striker 17, which hits the striker 17 and over this one Impact on the end face of the shaft 13 of the tool exercises.
- the parallel distance between the two cam tracks 22, 23 at cam 27 abutting the stop 36 on the housing 10 and the compression springs 24, 25 are so matched that the scanning finger 40 of the scanning member 20 when the Racket 18 on the striker 17 from the curved tracks 22, 23 is largely decoupled.
- the racket 18 is after Impact on the striker 17 reflects and flies backwards towards the recess 222 of the cam track 22. With good Percussion tuning touches the scanning finger 40 Recess 232 of the cam track 23 only slightly or not at all.
- Fig. 5 is still sketched that the two adjacent spring ends also in one piece can be connected.
- a one-piece compression spring 44 with a radial protruding spring arch 441 through the axial slot 41 in the spindle sleeve or drive spindle 11 passes through and guided between the cam tracks 22, 23 as a scanning member 21 becomes.
- the part shown in longitudinal section in Fig. 6 Driver unit 20 is opposite to that described above Driver unit 20 modified to the extent that the compression springs 24.25 outside the spindle sleeve or drive spindle 11 are arranged.
- the scanning member 21 has two with play the spindle sleeve 11 seated sliding rings 45,46, on which each in one piece a radially protruding, hollow Scanning projection 45a, 46a is formed.
- In each other movable scanning projections 45a, 46a protrude through the Passage slot 41 passed through in the spindle sleeve 11 and connecting pin 47 anchored in the racket 18.
- Axial are located in the scanning projections 45a, 46a Holding slots 45b, 46b through which the connecting pin 47 attacks.
- the connector pin 47 is in the scanning protrusions 45a, 46a rotatably fixed, but can in the axial direction with the Sliding rings 45, 46 can be moved.
- the inside of the Scanning cams 45, 46 arranged compression springs 24, 25 are supported on the one hand on the inner wall of the scanning cams 45, 46 and on the other hand on the connecting pin 47.
- the slide rings 45, 46 are separated from one another applied away so that the connecting pin 47 to the system Tabs 45c, 46c on the scanning projections 45a, 46a comes.
- the arrangement of the cam disks 26, 27 is as in FIG. 1 hit, so that the scanning cams 45,46 between the two Curve tracks 22, 23 are guided.
- Cam 21 carrying cam 26 also axially slidably formed and how the cam 27 on the Bolt 29 guided axially.
- Cam 27 is the curved path 23 transverse to its axial direction bearing disc part 271 and one on the on the Spindle sleeve or drive spindle 11 fixed axial bearing 33 supporting disc part 272 divided.
- the Scanning member 21 is rigidly connected to the racket 18 and protrudes through the axial cut 41 in the spindle sleeve 11 and is again between the two curved tracks 22, 23 guided.
- the two compression springs 24, 25 coaxially surround the Spindle sleeve 11, the compression spring 24 between the Housing 10 and the cam disc 26 and the compression spring 25 themselves between the two disc parts 271 and 272 of the Cam 27 supports.
- the mode of operation of the modified driver unit 20 according to 6 and 7 is the same as that of the driver unit 20 in FIG Fig. 1, so that reference is made to the description there becomes.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
- Fig. 1
- ausschnittweise einen Längsschnitt eines Bohrhammers zum wahlweisen Bohren oder Schlagbohren,
- Fig. 2
- ausschnittweise einen Schnitt längs der Linie II-II in Fig. 1,
- Fig. 3
- ausschnittweise eine Abwicklung zweier Kurvenbahnen im Schlagwerk des Bohrhammers in Fig. 1,
- Fig. 4 bis 7
- jeweils ausschnittweise ein modifiziertes Schlagwerk gemäß weiteren Ausführungsbeispielen.
Claims (17)
- Elektrowerkzeugmaschine für drehend und/oder schlagend arbeitende Werkzeuge, wie Bohr- oder Schlaghammer oder Schlagbohrmschine, mit einem Maschinengehäuse (10), mit einer im Maschinengehäuse (10) gelagerten, drehend antreibbaren Arbeitsspindel (11), die ihrerseits eine Werkzeugaufnahme (12) zur Aufnahme eines Werkzeugs antreibt, und mit einem mechanischen Schlagwerk (16), das einen in seiner axialen Richtung beschleunigten, direkt oder indirekt den Schaft (13) des Werkzeugs mit Schlägen beaufschlagenden Schläger (18) und eine die Beschleunigung des Schlägers (18) aus einer Rotationsbewegung ableitende Treibereinheit (20) aufweist, wobei die Treibereinheit (20) ein mit der Arbeitsspindel (11) synchron umlaufendes, axial verschieblich angeordnetes Abtastglied (21) aufweist, das zwischen zwei zur Arbeitsspindel (11) verdrehfest angeordneten, ringförmigen Kurvenbahnen (22, 23) mit in Achsrichtung der Arbeitsspindel weisenden Erhebungen (221, 231) und Vertiefungen (222, 232) geführt ist, dadurch gekennzeichnet, dass mindestens eine der beiden Kurvenbahnen (22, 23) axial verschiebbar gelagert ist und dass das Abtastglied (21) zwischen den beiden Kurvenbahnen (22, 23) mit axialem Spiel geführt ist.
- Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die Treibereinheit (20) zwei im Verschiebeweg des Schlägers (18) wirksame, zueinander gegensinnig wirkende Federspeicher (24,25) aufweist, die von dem Abtastglied(21) direkt oder indirekt spannbar sind.
- Maschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Erhebungen (221,231) und Vertiefungen (222,232) von mehreren, vorzugsweise drei oder fünf, Perioden einer sinusähnlichen Kurve gebildet sind.
- Maschine nach einem der Anprüche 1 - 3, dadurch gekennzeichnet, daß der Parallelabstand der Kurvenbahnen (22,23) mit ihren in Achsrichtung der Arbeitsspindel (11) kolinearen Erhebungen (221,231) und Vertiefungen (222,232) und die Federspeicher (24,25) so aufeinander abgestimmt sind, daß das Abtastglied (21) beim direkten oder indirekten Auftreffen des Schlägers (18) auf den Werkzeugschaft (13) von den Kurvenbahnen (22,23) weitgehend entkoppelt ist und bei der nachfolgenden Reflexion des Schlägers (18) weitgehend entkoppelt bleibt.
- Maschine nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß die Federspeicher als Druckfedern (24,25) ausgebildet sind.
- Maschine nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, daß die beiden Kurvenbahnen (22,23) auf je einer von zwei ringförmigen Kurvenscheiben (26,27) ausgebildet sind, die im Maschinengehäuse (10) koaxial zur Arbeitsspindel (11) undrehbar festgelegt sind, und daß eine der Kurvenscheiben (27) zum Zu- und Abschalten des Schaltwerks (16) im Maschinengehäuse (10) axial verschieblich geführt ist.
- Maschine nach Anspruch 6, dadurch gekennzeichnet, daß eine Axialverschiebung der verschieblichen Kurvenscheibe (27) aus dem von einem Bediener über das Maschinengehäuse (10) erzeugten Andruck des in der Werkzeugaufnahme (12) gehaltenen Werkzeugs abgeleitet ist.
- Maschine nach Anspruch 7, dadurch gekennzeichnet, daß die Arbeitsspindel (11) im Maschinengehäuse (10) axial verschieblich gelagert ist, daß die verschiebliche Kurvenscheibe (27) mittels Andruckfedern (30) an einem an der Arbeitsspindel (11) unverschieblich festgelegten Axiallager (33) angedrückt ist und daß ein gehäuseseitiger Anschlag (36) zur Begrenzung der Axialverschiebung der Arbeitsspindel (11) vorgesehen ist, an dem die verschiebliche Kurvenscheibe (27) bei durch den Werkzeugandruck hervorgerufener Axialverschiebung der Arbeitsspindel (11) festgelegt wird.
- Maschine nach Anspruch 8, dadurch gekennzeichnet, daß die verschiebliche Kurvenscheibe (27) auf mehreren, vorzugsweise drei, auf einem zur Arbeitsspindel (11) koaxialen Teilerkreis um gleiche Umfangswinkel zueinander versetzt angeordneten, parallelen Bolzen (29) gleitet und daß die Andruckfedern (30) auf den Bolzen (29) aufgenommen sind.
- Maschine nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß ein manuell zu bedienendes Abschaltglied (37) für das Schaltwerk (16) einen in den Verschiebeweg der verschieblichen Kurvenscheibe (27) einschwenkbaren Anschlag (38) aufweist, der die verschiebliche Kurvenscheibe (27) in ihre Grundposition festlegt, die sie bei unbelastetem Werkzeug unter der Rückstellkraft der Andruckfedern (30) einnimmt.
- Maschine nach einem der Ansprüche 8 - 10, dadurch gekennzeichnet, daß der Schläger (18) in der als Spindelhülse (11) ausgebildeten Arbeitsspindel axial verschieblich einliegt und das mit dem Schläger (18) gekoppelte Abtastglied (21) durch einen Axialschlitz (41) in der Spindelhülse (11) hindurchragt und daß zwischen Schläger (18) und Werkzeugschaft (13) ein in der Spindelhülse (11) verschiebbarer Döpper (17) angeordnet ist, der zur Übertragung einer vom Werkzeugandruck bewirkten axialen Werkzeugverschiebung auf die Spindelhülse (11) an seiner dem Schläger (18) zugekehrten Stirnseite, vorzugsweise über einen in der Innenwand der Spindelhülse (11) eingesetzten Sprengring (19), an der Spindelhülse (11) abstützbar ist.
- Maschine nach Anspruch 11, dadurch gekennzeichnet, daß das Abtastglied (21) verschieblich auf dem Schläger (18) sitzt und zwischen die Kurvenscheiben (21,22) hineinragt und daß die beiden Druckfedern (24,25) auf den Schläger (18) aufgeschoben sind und sich zwischen je einer der beiden in Achsrichtung voneinander abgekehrten Seiten des Abtastglieds (21) und je einer der am Schläger (18) ausgebildeten Ringschultern (42,43) abstützen.
- Maschine nach Anspruch 12, dadurch gekennzeichnet, daß das Abtastglied (21) von den radial nach außen abgebogenen, aneinanderliegenden Federenden (241,251) der beiden Druckfedern (24,25) gebildet ist und daß die beiden Federenden (241,251) miteinander starr verbunden oder die beiden Druckfedern (44) miteinander einstückig ausgebildet sind.
- Maschine nach Anspruch 11, dadurch gekennzeichnet, daß das Abtastglied (21) einen mit Spiel auf der Spindelhülse (11) sitzenden Gleitring (45) mit radial abstehendem, hohlem Abtastnocken (46) aufweist, der über ein im Schläger (18) verankertes, durch den Durchtrittsschlitz (41) in der Spindelhülse (11) hindurchtretendes Verbindungselement (47) drehfest mit dem Schläger (18) verbunden und in Achsrichtung relativ zum Verbindungselement (47) verschiebbar ist, und daß die beiden Druckfedern (24,25) sich zwischen den voneinander abgekehrten Seiten des Verbindungselements (47) und den Innenwänden des Abtastnockens (46) abstützen.
- Maschine nach Anspruch 11, dadurch gekennzeichnet, daß das Abtastglied (21) im Schläger (18) verankert ist, daß die verschiebliche Kurvenscheibe (27) quer zur Achsrichtung in einen die Kurvenbahn (23) tragenden Scheibenteil (271) und einen am Axiallager (33) der Spindelhülse (11) sich abstützenden Scheibenteil (272) unterteilt und die andere Kurvenscheibe (26) im Maschinengehäuse (10) axial verschieblich angeordnet ist und daß die eine Druckfeder (25) sich zwischen den beiden Scheibenteilen (271,272) der einen Kurvenscheibe (27) und die andere Druckfeder (24) sich zwischen der von der Kurvenbahn (22) abgekehrten Rückseite der anderen Kurvenscheibe (26) und dem Maschinengehäuse (10) abstützt.
- Maschine nach Anspruch 15, dadurch gekennzeichnet, daß der gehäuseseitige Anschlag zur Begrenzung der Axialverschiebung der Spindelhülse (11) und der einschwenkbare Anschlag (38) des Abschaltglieds (37) zum Abschalten des Schaltwerks (16) jeweils mit dem an dem Axiallager (33) sich abstützenden Scheibenteil (272) der Kurvenscheibe (27) zusammenwirken.
- Maschine nach Anspruch 15 oder 16, dadurch gekennzeichnet, daß die Scheibenteile (271,272) der einen Kurvenscheibe (27) und die andere Kurvenscheibe (26) auf mehreren, vorzugsweise drei, auf einem zur Spindelhülse (11) koaxialen Teilerkreis um vorzugsweise gleiche Umfangswinkel zueinander versetzt angeordneten und im Maschinengehäuse (10) festgespannten, parallelen Bolzen (29) gleiten.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19726383 | 1997-06-21 | ||
DE19726383A DE19726383A1 (de) | 1997-06-21 | 1997-06-21 | Elektrowerkzeugmaschine |
PCT/DE1998/001247 WO1998058774A1 (de) | 1997-06-21 | 1998-05-06 | Elektrowerkzeugmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0930957A1 EP0930957A1 (de) | 1999-07-28 |
EP0930957B1 true EP0930957B1 (de) | 2002-04-17 |
Family
ID=7833235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98933451A Expired - Lifetime EP0930957B1 (de) | 1997-06-21 | 1998-05-06 | Elektrowerkzeugmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6199640B1 (de) |
EP (1) | EP0930957B1 (de) |
JP (1) | JP2001500070A (de) |
CN (1) | CN1072549C (de) |
BR (1) | BR9806112A (de) |
DE (2) | DE19726383A1 (de) |
WO (1) | WO1998058774A1 (de) |
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DE10059388A1 (de) | 2000-11-30 | 2002-06-13 | Bosch Gmbh Robert | Handwerkzeugmaschine |
DE10059389B4 (de) * | 2000-11-30 | 2007-03-29 | Robert Bosch Gmbh | Handwerkzeugmaschine mit einem Schlagwerk |
DE10149216A1 (de) * | 2001-10-05 | 2003-04-24 | Bosch Gmbh Robert | Handwerkzeugmaschine |
TW554792U (en) * | 2003-01-29 | 2003-09-21 | Mobiletron Electronics Co Ltd | Function switching device of electric tool |
TW556637U (en) * | 2003-02-24 | 2003-10-01 | Mobiletron Electronics Co Ltd | Power tool |
DE102004045117A1 (de) * | 2004-09-17 | 2006-03-23 | Robert Bosch Gmbh | Schaltvorrichtung |
EP1690640B1 (de) * | 2005-02-10 | 2013-03-06 | Black & Decker Inc. | Handgehaltene Schlagmaschine |
GB2423049A (en) * | 2005-02-10 | 2006-08-16 | Black & Decker Inc | Hammer with striker connected to pivoting arm by spring |
GB2423050A (en) * | 2005-02-10 | 2006-08-16 | Black & Decker Inc | Hammer with ramps causing pivotal oscillation |
GB2423044A (en) | 2005-02-10 | 2006-08-16 | Black & Decker Inc | Hammer with cam-actuated driven member |
CN101288950B (zh) * | 2007-04-18 | 2011-08-03 | 苏州宝时得电动工具有限公司 | 多功能动力工具 |
GB0712557D0 (en) * | 2007-06-29 | 2007-08-08 | Fisher Hugh E | Improved tools |
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US7717191B2 (en) | 2007-11-21 | 2010-05-18 | Black & Decker Inc. | Multi-mode hammer drill with shift lock |
US7717192B2 (en) * | 2007-11-21 | 2010-05-18 | Black & Decker Inc. | Multi-mode drill with mode collar |
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US7735575B2 (en) * | 2007-11-21 | 2010-06-15 | Black & Decker Inc. | Hammer drill with hard hammer support structure |
US7762349B2 (en) | 2007-11-21 | 2010-07-27 | Black & Decker Inc. | Multi-speed drill and transmission with low gear only clutch |
US7757922B2 (en) * | 2008-02-04 | 2010-07-20 | Jelley Technology Co., Ltd | Power beating device |
CN201201225Y (zh) * | 2008-05-20 | 2009-03-04 | 东莞群胜粉末冶金有限公司 | 冲击钻的冲击切换装置 |
US8251158B2 (en) | 2008-11-08 | 2012-08-28 | Black & Decker Inc. | Multi-speed power tool transmission with alternative ring gear configuration |
DE102009027442A1 (de) | 2009-07-03 | 2011-01-05 | Robert Bosch Gmbh | Handwerkzeugmaschine |
DE102010062099A1 (de) * | 2010-11-29 | 2012-05-31 | Robert Bosch Gmbh | Hammerschlagwerk |
CN102847976A (zh) * | 2012-08-28 | 2013-01-02 | 方荣泉 | 快速钻孔自动断削磁力空芯钻 |
EP2918376A1 (de) * | 2014-03-12 | 2015-09-16 | HILTI Aktiengesellschaft | Meisselnde Handwerkzeugmaschine |
TWI513556B (zh) * | 2015-04-10 | 2015-12-21 | Mobiletron Electronics Co Ltd | Power tools and their torque switching devices |
CN106142022B (zh) * | 2015-04-16 | 2019-01-04 | 车王电子股份有限公司 | 电动工具及其扭力切换装置 |
DE102015217180A1 (de) * | 2015-09-09 | 2017-03-09 | Robert Bosch Gmbh | Tragbare Energiespeichervorrichtung zur Versorgung von Werkzeugen |
US11083512B2 (en) * | 2016-08-31 | 2021-08-10 | DePuy Synthes Products, Inc. | Orthopedic device delivering a controlled, repeatable impact |
EP4147655A1 (de) * | 2016-08-31 | 2023-03-15 | DePuy Synthes Products, Inc. | Orthopädische schlagvorrichtung mit abgeworfener masse zur bereitstellung einer gesteuerten, wiederholbaren und umkehrbaren schlagkraft |
EP3392974A1 (de) | 2017-04-21 | 2018-10-24 | HILTI Aktiengesellschaft | Federkontakt an einem akkumulator |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1505493A (en) * | 1920-08-13 | 1924-08-19 | C S Somervell | Impact tool |
DE2820125A1 (de) * | 1978-05-09 | 1979-11-22 | Bosch Gmbh Robert | Handwerkzeugmaschine |
US5513709A (en) * | 1988-06-23 | 1996-05-07 | Fisher; Hugh E. | Power tool |
DE4121279A1 (de) | 1991-06-27 | 1993-01-07 | Bosch Gmbh Robert | Bohr- und/oder schlaghammer |
GB9126970D0 (en) * | 1991-12-19 | 1992-02-19 | Fisher Hugh E | Power tool 111 |
US5449044A (en) * | 1993-10-29 | 1995-09-12 | Phillips; Raymond J. | Miniature impact tool |
JP3568128B2 (ja) * | 1994-02-25 | 2004-09-22 | 日立工機株式会社 | 回転打撃工具 |
-
1997
- 1997-06-21 DE DE19726383A patent/DE19726383A1/de not_active Withdrawn
-
1998
- 1998-05-06 EP EP98933451A patent/EP0930957B1/de not_active Expired - Lifetime
- 1998-05-06 BR BR9806112-7A patent/BR9806112A/pt not_active Application Discontinuation
- 1998-05-06 DE DE59803839T patent/DE59803839D1/de not_active Expired - Fee Related
- 1998-05-06 CN CN98800811A patent/CN1072549C/zh not_active Expired - Fee Related
- 1998-05-06 WO PCT/DE1998/001247 patent/WO1998058774A1/de active IP Right Grant
- 1998-05-06 US US09/242,599 patent/US6199640B1/en not_active Expired - Fee Related
- 1998-05-06 JP JP11503524A patent/JP2001500070A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US6199640B1 (en) | 2001-03-13 |
JP2001500070A (ja) | 2001-01-09 |
BR9806112A (pt) | 1999-08-31 |
DE59803839D1 (de) | 2002-05-23 |
CN1072549C (zh) | 2001-10-10 |
EP0930957A1 (de) | 1999-07-28 |
CN1229377A (zh) | 1999-09-22 |
DE19726383A1 (de) | 1998-12-24 |
WO1998058774A1 (de) | 1998-12-30 |
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