CN1069249C - Rotary-impacting-type electric rock drill - Google Patents
Rotary-impacting-type electric rock drill Download PDFInfo
- Publication number
- CN1069249C CN1069249C CN96113207A CN96113207A CN1069249C CN 1069249 C CN1069249 C CN 1069249C CN 96113207 A CN96113207 A CN 96113207A CN 96113207 A CN96113207 A CN 96113207A CN 1069249 C CN1069249 C CN 1069249C
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- China
- Prior art keywords
- change
- switch
- over switch
- working shaft
- switch handle
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- Expired - Fee Related
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- 239000011435 rock Substances 0.000 title abstract 2
- 238000005553 drilling Methods 0.000 claims abstract description 31
- 239000000523 sample Substances 0.000 claims description 24
- 230000003116 impacting effect Effects 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 238000009527 percussion Methods 0.000 abstract 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Jigs For Machine Tools (AREA)
- Percussive Tools And Related Accessories (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
一种包括一个带有用于接收钎具的卡盘(40)的转动工作轴(11)和一个冲击机(18)的旋转冲击式电动凿岩机设有一个用于接通或断开冲击机(18)的转换开关把手(23)，所述转换开关把手(23)将冲击机推至第一“冲击钻孔”开关位置，并且在不起作用的情况下将其转到第二“旋转钻孔”开关位置以实现单纯的旋转钻孔。为了实现不用工具地制动工作轴，在用卡盘(40)更换钎具时，转换开关把手(23)设有第三“工作轴制动”开关位置，在该位置上，至少一个固定在机罩内的、与转换开关把手(23)连接的制动件(30)形式合理地插入一个与工作轴(11)抗转动相连的制动件-接收部分(33)。
A rotary percussion electric rock drill comprising a rotary working shaft (11) with a chuck (40) for receiving a drilling tool and a percussion machine (18) is provided with a tool for switching on or off the percussion machine (18) ) of the switch handle (23) that pushes the impact machine to the first "impact drilling" switch position and, if it does not work, turns it to the second "rotary drilling" ” switch position for pure rotary drilling. In order to brake the working shaft without tools, when changing the drilling tool with the chuck (40), the switch handle (23) is provided with a third "working shaft brake" switch position, in which at least one is fixed on The brake part (30) in the hood, which is connected to the changeover switch handle (23), is suitably inserted into a brake part-receptacle (33) which is connected to the working shaft (11) in a rotationally fixed manner.
Description
The present invention relates to a kind of electric impacting churn, it comprises the working shaft and the beater mechanism that can connect and the manual change-over switch handle that is fixed in the hood that have the chuck (the particularly tight chuck of speed) that is used to receive drilling tool, this working shaft rotating support is in hood and by a Motor Drive, this beater mechanism also makes working shaft make the cycle impact type and moves axially, this change-over switch handle makes working shaft contact with pneumatic hammer on first " percussive drilling " position of the switch, makes working shaft break away from pneumatic hammer on second " rotary drilling " position of the switch.
In a kind of electric impacting churn (EP0463416 B1) known, that have the pneumatic hammer that is driven by rotating driving device, the change-over switch handle has one the 3rd position of the switch, on this position of the switch, the high speed rotary drilling can take place.On the 4th position of the switch, the change-over switch handle is thrown off working shaft and drive transmission, and press another banking pin by hand working shaft is not rotatably fixed in the hood, thereby, simple percussive drilling can take place during the working shaft braking.In addition, the brake tooth of a connecting ring of this banking pin engagement, this connecting ring resists rotationally but can be installed on the working shaft with moving axially.Connecting ring moves axially by a control cam of switch-board, and connecting ring selectively meshes two gears of drive transmission to obtain different working shaft rotating speeds.Still there is not the ad hoc approach of changing drilling tool.
From the known handheld electric tool, particularly (DE4100412A1) can know from a kind of hand-held annular saw, when when changing cutting element without instrument ground steady job axle, clamp saw blade by a binding nut that is screwed on the working shaft thread segment, and being provided with a brake apparatus that makes the working shaft braking, this device has an anti-packing ring and two relative locating slots and the alignment pin that can move into locating slot against stage clip that is rotatably fixed on the working shaft.When operating chuck for the replacing drilling tool, the change-over switch handle of electric impacting churn of the present invention has one the 3rd " working shaft braking " position of the switch, on this position, have at least a brake component that links to each other with the change-over switch handle and be fixed in the hood to be connected with anti-brake component one receiving unit that is rotationally connected with working shaft with rational form.The benefit of this rig is, by giving the change-over switch handle another function is set, and when changing drilling tool, has simplified operation greatly with plain mode, and need not to establish in addition action button.When adjusting chuck, working shaft needn't be used the hand clamping, when operation is unskilled, can prevent that chuck is loosening, as long as forward original change-over switch handle to another position of the switch like this.For this reason, banking pin moves and is positioned in (in other words, after using hand rotation work axle a little) draw-in groove, and working shaft no longer is rotated further.This for the replacing drilling tool makes the scenario-frame of working shaft braking simple, and only need cheap manufacturing process cost can obtain significant service advantages.
A kind of improvement structure of electric impacting churn of the present invention is, the change-over switch handle has a control cam, brake component take shape in hood can axially movable probe on, probe is pressed against on this control cam by a stage clip that is bearing in hood one side, the structure of control cam is such, at least when the change-over switch handle turns to the 3rd position of the switch, probe and banking pin are moved together.The another kind of electric impacting churn of the present invention improves structure and is, first, second and third position of the switch of change-over switch handle is arranged in order on the identical rotation direction of said sequence rotation change-over switch handle.
The another kind of electric impacting churn of the present invention improves structure and is, the change-over switch handle respectively has a groove that works on first position of the switch and second switch position, and is provided with one is tightened up and unclamps the back-moving spring that behind the change-over switch handle change-over switch handle is returned when the change-over switch handle turns to the 3rd position of the switch.
Other of electric impacting churn of the present invention improves structure and is that back-moving spring is made of spring leaf or helical compression spring.
Other of electric impacting churn of the present invention improves structure and is, brake component one receiving unit is made of an axial hole, this axial hole is located at working shaft and resists in the driven wheel that is rotatedly connected, and this gear is the part of the drive unit between motor and working shaft.The further improvements of electric impacting churn of the present invention are, be shaped on the probe that external diameter reduces relatively as the brake component of banking pin, the probe axial slip in the large diameter hole section of a shoulder hole and the banking pin axial slip in this shoulder hole small diameter bore section, this shoulder hole is arranged in the support of bearing that is fixed in the hood, stage clip is made of a helical compression spring that is bearing on the banking pin, the one end bearing on probe, the other end be bearing in be formed in the shoulder hole on the radial transition between two hole sections part.
The further improvement structure of electric impacting churn of the present invention is that the change-over switch handle has a switch-board, and it is around a rotating shaft rotatably support that is parallel to the hood axle, the control cam as one vertically the sliding surface of updip take shape in the switch-board upper surface.
The another kind of electric impacting churn of the present invention improves structure and is, the location on change-over switch handle first and second position of the switch is realized that by the groove on the sliding surface under stage clip elastic force, the terminal probe that forms sphere falls into above-mentioned groove.
In a preferred embodiment of the invention, when the change-over switch handle has a control cam, people just obtain a kind of manufacturing process design with low cost, banking pin takes shape on the probe that can move axially in hood, this probe is pressed against on the control cam by a stage clip that is supported on the hood side, the control cam has such structure, and when the change-over switch handle turned to the 3rd position of the switch, it can axially promote probe and banking pin.
Favourable embodiment according to the present invention, first, second and third position of the switch of change-over switch handle is arranged in order on the equidirectional that rotates the change-over switch handle with said sequence, when operation change-over switch handle, rotate successively or backward rotation change-over switch handle.In addition, the change-over switch handle has a groove that works on first and second position of the switch, and the change-over switch handle forwards the 3rd position of the switch to against the elastic force of a back-moving spring, thereby, after unclamping the change-over switch handle, it returns the second switch position again automatically.This structure has guaranteed that when not wishing that the change-over switch handle remains on the 3rd " working shaft braking " position of the switch, the braking of working shaft is cancelled automatically.When connecting the rotary impact type electric drill, this structure also can be braked working shaft wittingly, thereby avoids machine is damaged.On other two position of the switch, the change-over switch handle is positioned, unless crack it open artificially.The result of making has prevented the infringement of faulty operation to machine like this.At least the back-moving spring that works on the 3rd position of the switch of change-over switch handle is made of spring leaf or helical spring.
In the following description, elaborate the present invention according to an embodiment who draws among the figure.Wherein:
Fig. 1 is the partial, longitudinal cross-sectional of an electric impacting churn,
Fig. 2 is the partial sectional view along II among Fig. 1-II line,
Fig. 3-5 is respectively a change-over switch handle on three different position of the switch the time, and change-over switch handle and banking pin are along the partial top view of the III direction of arrow among Fig. 1.
The electric impacting churn that draws along the longitudinal section part in Fig. 1 has 10, working shafts 11 of a hood rotationally but axially can limit and be installed in movably in this hood.This working shaft 11 is by a Motor Drive, the driven shaft 12 of the motor that only draws in Fig. 1.These driven shaft 12 ends be provided with one be fixed on this working shaft 11 on the driven wheel 13 that contacts of the toothed crown of spur gear 14.Driven shaft 12 and working shaft 11 all are rotatably supported on the support of bearing 15 that is fixed in the hood, and this two bearings 16,17 are made of journal bearing, preferably are made of roller bearing or needle bearing.
Working shaft 11 can also be made the cycle impact type by an optionally connected logical beater mechanism 18 and move axially when rotating, thereby realizes so-called percussive drilling.The beater mechanism 18 that constitutes by so-called pawl type beater mechanism on two edges by ratchet projection or ratchet helical teeth 19 around being dispersed in equally, 20 act on working shaft 11, ratchet helical teeth 19 takes shape on the dial 21 that is pressed against on the support of bearing 15, and another ratchet helical teeth 20 takes shape on that end face of spur gear 14 steering bearing supports 15.During percussive drilling, apply by operating personnel and to overcome the power that is bearing in working shaft 11 and is fixed on helical spring 42 elastic force between the sleeve 22 (it is coaxial with working shaft 11) in the hood, thereby two ratchet helical teeth edges are meshing with each other.The ratchet helical teeth 19,20 of relative slippage made working shaft 11 move as axial impact when working shaft 11 rotated.
In Fig. 1 the first half, the electric impacting churn is in " percussive drilling " operating position, and this moment, above-mentioned beater mechanism 18 worked.In Fig. 1 the latter half, the electric impacting churn is in " rotary drilling " operating position, and this moment, beater mechanism 18 was disconnected.In order to adopt the different operating mode of electric impacting churn, be provided with a change-over switch handle 23, it has one first " percussive drilling " position of the switch, second " rotary drilling " position of the switch, the 3rd " working shaft braking " position of the switch.This change-over switch handle 23 is made of at the integrated handle 26 of switch-board 24 edges a switch-board 24 and one, this switch-board can rotate around the rotating shaft parallel with the hood axle 25 in hood 10, and this handle is perpendicular to switch-board 24 placements and at hood direction of principal axis upper process.On this switch-board 24, constitute a sliding surface 27, as among Fig. 3-5 clear see, it in the corner regions of switch-board 24 between three position of the switch, first position of the switch to the along its rotating shaft 25 direction updips.When switch-board 24 was swung with pivot angle α shown in Figure 2, the moving direction of sliding surface 27 was shown in double-head arrow 28a among Fig. 3-5.
A probe 28 works simultaneously with this sliding surface 27, and this probe is pressed against on the sliding surface 27 by a stage clip 29.The brake component that has banking pin 30 forms that reduce with diameter to occur at the probe rear portion.Probe 28 and banking pin 30 one constitute and constitute a sliding pin 31.This sliding pin 31 leads in the shoulder hole 32 of the support of bearing 15 and moves, and simultaneously, probe 28 is positioned at the large diameter hole section of shoulder hole 32, and banking pin 30 is positioned at the small diameter bore section of shoulder hole 32.Shoulder hole 32 large diameter hole segment lengths are in banking pin 30 and a stage clip 29 is wherein arranged, this stage clip around this banking pin 30 and its end face one side bearing on the radially shaft shoulder of banking pin 30 and probe 28, opposite side be bearing in the radial transition that forms by the relative small diameter bore section of shoulder hole 32 large diameter hole sections partly on.The large diameter hole section of shoulder hole 32 can also be opened on dial 21, has increased the supporting stability of banking pin 30 thus.
Draw among Fig. 3 switch-board 24 and sliding pin 31 is in such position respectively, promptly occupies first " percussive drilling " position of the switch of change-over switch handle 23, represents with 1 among Fig. 2.Drawn among Fig. 4 switch-board 24 and sliding pin 31 is in such position, promptly occupies second " rotary drilling " position of the switch of change-over switch handle 23, represents with 2 among Fig. 2.Drawn among Fig. 5 switch-board 24 and sliding pin 31 is in such position, promptly occupies the 3rd " working shaft braking " position of the switch of change-over switch handle 23, represents with 3 among Fig. 2.By updip sliding surface 27, sliding pin 31 slips in the shoulder hole 32 of the support of bearing 15 gradually, and before the 3rd position of the switch, the free end of banking pin 30 enters in banking pin one receiving unit 33, and this receiving unit is located in the spur gear 14 as coaxial aperture 41.On the 3rd position of the switch of change-over switch handle 23, spur gear 14 links to each other with working shaft 11 because spur gear 14 resists rotationally by banking pin 30 anti-being rotatably fixed on the support of bearing 15, and therefore, working shaft can not rotate.In Fig. 3-5, know and see, on sliding surface 27, on switch-board 24, be provided with two recesses or cotter way 34,35, they are so to be provided with, promptly terminally form spherical probe 28 and be arranged in cotter way 34 (Fig. 3) on first position of the switch of change-over switch handle 23 time, be arranged in cotter way 35 (Fig. 4) in the time of on the second switch position of change-over switch handle 23 again.In addition, two position of the switch of this of change-over switch handle 23 are immutable, and change-over switch handle 23 can only could be rotated further from this position of the switch 1 and 2 by applying certain moment of torsion.
As shown in Figure 2, when change-over switch handle 23 when second switch position 2 goes to the 3rd position of the switch 3, a back-moving spring works between hood 10 and switch-board 24, this spring is got back to again on the second switch position 2 after change-over switch handle 23 is unclamped.Among Fig. 2, spring leaf 36 is as back-moving spring, and it is fixed on the switch-board 24 and leans against on the hood protuberance 37 on the second switch position 2 of change-over switch handle the time.When change-over switch handle 23 when second switch position 2 turns to the 3rd position of the switch 3, clearly from Fig. 2 see that spring leaf 37 is tightened up.Spring assembly 36 also can be a helical compression spring, and this helical compression spring remains in the groove along the periphery circular arc of switch-board 24, and its top is bearing on switch-board 24 and the hood protuberance.
As mentioned above, when change-over switch handle 23 is arranged in the second switch position 2 that Fig. 4 draws (" rotary drilling "), beater mechanism 18 is thrown off with working shaft 11.For reaching this purpose, as shown in Figure 1, be provided with a ball 38 and a blind hole in working shaft 11 ends.When change-over switch handle 23 turns to second switch position 2 by first position of the switch 1, a switch plate 39 inserts between switch-board 24 and the ball 38, make working shaft 11 and gear 1 fixed thereon produce a kind of like this moving simultaneously, promptly two of beater mechanism 18 ratchet helical teeth 19,20 are thrown off.This can see in the latter half of Fig. 1.
The effect of the 3rd position of the switch 3 of change-over switch handle 23 (" working shaft braking ") is, can be when changing drilling tool and be churn drilling tools and rotation drilling tool the tight chuck 40 of the speed of operation setting on working shaft 11, drilling tool by this chuck anti-rotation be fixed on the working shaft 11.Just can brake working shaft 11 by change-over switch handle 23 without other instrument, and when using the tight chuck 40 of speed, need not special clamping.Adopt the 3rd position of the switch of change-over switch handle 23 to greatly facilitate with the tight chuck 40 replacing instruments of speed.
Claims (10)
1, a kind of electric impacting churn, have chuck (the particularly tight chuck (40) of speed) and the beater mechanism that can connect (18) and a manual change-over switch handle (23) that is fixed in the hood (10) of being used to the working shaft (11) of drilling tool draw-in groove, this working shaft (11) rotating support is in hood (10) and by a Motor Drive, this beater mechanism also makes working shaft make the cycle impact type and moves axially, this change-over switch handle (23) makes working shaft (11) contact with beater mechanism (18) in first " percussive drilling " position of the switch (1), make working shaft (11) break away from beater mechanism (18) in second " rotary drilling " position of the switch (2), it is characterized in that, when operating chuck in order to change drilling tool, this change-over switch handle (23) has one the 3rd " working shaft braking " position of the switch (3), on this position of the switch, at least one links to each other with change-over switch handle (23), brake component (30) form in the hood of being fixed on reasonably meshes one and resists brake component one receiving unit (33) that is rotatedly connected with working shaft (11).
2, rig as claimed in claim 1, it is characterized in that, change-over switch handle (23) has a control cam (27), brake component (30) takes shape on can axially movablely pop one's head in hood (10) (28), probe (28) is pressed against on this control cam (27) by a stage clip (29) that is bearing in hood one side, the structure of control cam (27) is such, when change-over switch handle (23) turns to the 3rd position of the switch (3), probe (30) and banking pin (31) is moved together at least.
3, rig as claimed in claim 1 or 2 is characterized in that, first, second and third position of the switch of change-over switch handle (23) (1,2,3) are arranged in order on the identical rotation direction of said sequence rotation change-over switch handle (23).
4, rig as claimed in claim 1, it is characterized in that, change-over switch handle (23) respectively has a groove that works (34 on first position of the switch (1) and second switch position (2), 35), and be provided with one when change-over switch handle (23) turns to the 3rd position of the switch (3), be tightened up and unclamp the change-over switch handle after change-over switch handle (23) is returned back-moving spring (36).
5, rig as claimed in claim 4 is characterized in that, back-moving spring is made of spring leaf (30) or helical compression spring.
6, rig as claimed in claim 1, it is characterized in that, brake component one receiving unit (33) is made of an axial hole (41), this axial hole is located at working shaft (11) and resists in the driven wheel (14) that is rotatedly connected, and this gear is the part of the drive unit between motor and working shaft (11).
7, rig as claimed in claim 1 or 2, it is characterized in that, be shaped on the probe (28) that external diameter reduces relatively as the brake component of banking pin (30), the probe (28) axial slip in the large diameter hole section of a shoulder hole (32) and the banking pin axial slip in this shoulder hole small diameter bore section, this shoulder hole is arranged in the support of bearing (15) that is fixed in the hood, stage clip (29) is made of a helical compression spring that is bearing on the banking pin (30), the one end bearing on probe (28), the other end be bearing in be formed in the shoulder hole (32) on the radial transition between two hole sections part.
8, rig as claimed in claim 2, it is characterized in that, change-over switch handle (23) has a switch-board (24), and it is around a rotating shaft rotatably support that is parallel to the hood axle, the control cam as one vertically the sliding surface of updip (27) take shape in the switch-board upper surface.
9, as the described rig of any one claim in claim 4-6 and 8, it is characterized in that, in change-over switch handle (23) first and second position of the switch (1,2) location on is by the groove (34 on the sliding surface (27), 35) realize, under stage clip (29) elastic force, the terminal probe (28) that forms sphere falls into above-mentioned groove.
10, rig as claimed in claim 7 is characterized in that, in change-over switch handle (23) first and second position of the switch (1,2) location on is by the groove (34 on the sliding surface (27), 35) realize that under stage clip (29) elastic force, the terminal probe (28) that forms sphere falls into above-mentioned groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19528924A DE19528924B4 (en) | 1995-08-05 | 1995-08-05 | Electric hammer drill |
| DE19528924.2 | 1995-08-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1154887A CN1154887A (en) | 1997-07-23 |
| CN1069249C true CN1069249C (en) | 2001-08-08 |
Family
ID=7768856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96113207A Expired - Fee Related CN1069249C (en) | 1995-08-05 | 1996-08-05 | Rotary-impacting-type electric rock drill |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH09117837A (en) |
| CN (1) | CN1069249C (en) |
| DE (1) | DE19528924B4 (en) |
| GB (1) | GB2304067B (en) |
| IT (1) | IT1290416B1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2327054A (en) * | 1997-07-08 | 1999-01-13 | Black & Decker Inc | Shaft locking |
| NL1014558C2 (en) * | 2000-03-03 | 2001-09-13 | Skil Europ Bv | Drilling machine with locking mechanism. |
| DE10031050A1 (en) * | 2000-06-26 | 2002-01-10 | Hilti Ag | Hand tool |
| DE10143150C1 (en) * | 2001-09-03 | 2003-04-17 | Metabowerke Gmbh | Electric hammer drill has ratchet disc attached to tool spindle with seating for spindle stop limiting axial movement of tool spindle |
| DE10336637B3 (en) * | 2003-08-08 | 2005-04-28 | Metabowerke Gmbh | Electrical hammer drilling machine has collar bush is fixed to spindle with collar interacting with end of output gear wheel to transfer impact motion in hammer drilling mode |
| JP2005246831A (en) * | 2004-03-05 | 2005-09-15 | Hitachi Koki Co Ltd | Vibration drill |
| DE102006000515A1 (en) * | 2006-12-12 | 2008-06-19 | Hilti Ag | Electric hand tool |
| US7770660B2 (en) | 2007-11-21 | 2010-08-10 | Black & Decker Inc. | Mid-handle drill construction and assembly process |
| US7762349B2 (en) | 2007-11-21 | 2010-07-27 | Black & Decker Inc. | Multi-speed drill and transmission with low gear only clutch |
| 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 |
| US7735575B2 (en) | 2007-11-21 | 2010-06-15 | Black & Decker Inc. | Hammer drill with hard hammer support structure |
| US7854274B2 (en) | 2007-11-21 | 2010-12-21 | Black & Decker Inc. | Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing |
| US7798245B2 (en) | 2007-11-21 | 2010-09-21 | Black & Decker Inc. | Multi-mode drill with an electronic switching arrangement |
| DE102009001132B4 (en) * | 2009-02-25 | 2022-04-28 | Robert Bosch Gmbh | power tool |
| DE102013207305A1 (en) * | 2012-10-08 | 2014-04-10 | Robert Bosch Gmbh | Powered hand tool i.e. cordless drill, has transmission part designed as planetary gear that is provided with planetary stages for switching between first and second gears, and switching ring switching between first and second gears |
| DE102018118323A1 (en) * | 2018-07-30 | 2020-01-30 | C. & E. Fein Gmbh | accessory |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2916499A1 (en) * | 1979-04-24 | 1980-11-06 | Duss Maschf | ELECTRIC HAND DRILLING MACHINE WITH DEVICE FOR ADJUSTMENT FOR ROTATING OR IMPACTING DRILLING |
| US4712625A (en) * | 1986-01-14 | 1987-12-15 | Willy Kress | Drilling and percussion hammer |
| GB2276578A (en) * | 1993-04-02 | 1994-10-05 | Bosch Gmbh Robert | Hammer drill and/or percussion hammer |
| CN1108165A (en) * | 1993-11-30 | 1995-09-13 | 罗伯特·博施有限公司 | Apparatus in machine hold by hand which can make tool rotating together |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2932470A1 (en) * | 1979-08-10 | 1981-02-26 | Scintilla Ag | MOTOR-DRIVEN HAND TOOL, IN PARTICULAR COMMERCIAL COMBINATION MACHINE |
| JPS5934906U (en) * | 1982-08-27 | 1984-03-05 | 日立工機株式会社 | Vibration drill application switching mechanism |
| DE4020269A1 (en) * | 1990-06-26 | 1992-01-02 | Bosch Gmbh Robert | ELECTRIC DRILLING MACHINE |
| DE4305965C2 (en) * | 1993-02-26 | 1997-08-21 | Kress Elektrik Gmbh & Co | Switch device for spindle locking for power tools |
-
1995
- 1995-08-05 DE DE19528924A patent/DE19528924B4/en not_active Expired - Fee Related
-
1996
- 1996-07-26 JP JP8198066A patent/JPH09117837A/en not_active Abandoned
- 1996-08-02 IT IT96MI001678A patent/IT1290416B1/en active IP Right Grant
- 1996-08-02 GB GB9616338A patent/GB2304067B/en not_active Expired - Fee Related
- 1996-08-05 CN CN96113207A patent/CN1069249C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2916499A1 (en) * | 1979-04-24 | 1980-11-06 | Duss Maschf | ELECTRIC HAND DRILLING MACHINE WITH DEVICE FOR ADJUSTMENT FOR ROTATING OR IMPACTING DRILLING |
| US4712625A (en) * | 1986-01-14 | 1987-12-15 | Willy Kress | Drilling and percussion hammer |
| GB2276578A (en) * | 1993-04-02 | 1994-10-05 | Bosch Gmbh Robert | Hammer drill and/or percussion hammer |
| CN1108165A (en) * | 1993-11-30 | 1995-09-13 | 罗伯特·博施有限公司 | Apparatus in machine hold by hand which can make tool rotating together |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1154887A (en) | 1997-07-23 |
| DE19528924B4 (en) | 2005-01-27 |
| GB9616338D0 (en) | 1996-09-11 |
| IT1290416B1 (en) | 1998-12-03 |
| JPH09117837A (en) | 1997-05-06 |
| DE19528924A1 (en) | 1997-02-06 |
| ITMI961678A0 (en) | 1996-08-02 |
| GB2304067A (en) | 1997-03-12 |
| GB2304067B (en) | 1997-08-13 |
| ITMI961678A1 (en) | 1998-02-02 |
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