EP0463416A1 - Foreuse à percussion électrique - Google Patents
Foreuse à percussion électrique Download PDFInfo
- Publication number
- EP0463416A1 EP0463416A1 EP19910109155 EP91109155A EP0463416A1 EP 0463416 A1 EP0463416 A1 EP 0463416A1 EP 19910109155 EP19910109155 EP 19910109155 EP 91109155 A EP91109155 A EP 91109155A EP 0463416 A1 EP0463416 A1 EP 0463416A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spindle
- impact drill
- drill according
- shift lever
- rotary drive
- 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
- 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
- B25D16/006—Mode changers; Mechanisms connected thereto
-
- 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
- B25D2211/061—Swash-plate actuated impulse-driving mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of 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
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0023—Tools having a percussion-and-rotation mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of 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
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0038—Tools having a rotation-only mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/005—Adjustable tool components; Adjustable parameters
- B25D2250/011—Bits, e.g. adjusting bits by setting in the desired angular position
Definitions
- the impact drill according to the invention with the characterizing features of claim 1 has the advantage that it can be switched over to the operating modes rotary drilling, impact drilling and chiseling with and without spindle lock by user-friendly and easy-to-use switching elements.
- a locking pin for the spindle lock that works together with the shift lever for switching the operating mode is particularly advantageous. This is under spring force and automatically returns to its rest position before switching on the rotary drive. Resilient switching elements enable the speed to be switched even during operation.
- the rotatable arrangement of gearwheels on the spindle which can be switched by means of an axially displaceable coupling ring, enables the switching elements for the operating mode switchover and the spindle lock to be coupled in a particularly simple manner.
- Figure 1 shows a longitudinal section through an impact drill
- Figure 2 shows a cross section through the switching elements.
- An impact drill with an electric drive motor (not shown further) has a housing 2, from which a tool holder 3 protrudes at the front.
- the tool holder 3 is connected to a rotationally driven spindle 4, within which a pneumatic hammer mechanism 5 is accommodated. Impacts of the striking mechanism 5 generated in the axial direction of the spindle 4 are transmitted to a tool, not shown, which is inserted into the tool holder 3.
- the striking mechanism 5 is driven by a wobble mechanism 6 known per se from rotary hammers, which has a rotary drive element 7 and a piston 8 driven to and fro.
- the rotary drive member 7 carries part of a clutch 10, the other part of which is arranged on a switching sleeve 11.
- the shift sleeve 11 is rotatably driven by an intermediate shaft 12 driven by a motor pinion 9 and is axially displaceable thereon.
- the switching sleeve 11 carries a collar 13 on which an annular thrust bearing 14, which is pushed over the spindle 4, bears.
- the intermediate shaft 12 carries two spaced-apart, firmly connected gears 16 and 17 of different diameters.
- the gears 16 and 17 are in constant engagement with two rotatably but axially fixedly mounted on the spindle 4 gears 18 and 19.
- the spindle 4 rotatably but axially displaceably carries a clutch ring 20 which faces each of the gears one Has clutch teeth 21.
- the clutch teeth 21 engage in counter teeth 22 and 23 on the gears 18 and 19.
- the coupling ring 20 has a locking toothing 24, into which a locking pin 25 which is seated in a rotationally fixed manner in the housing 2 can be latched.
- a two-legged shift fork 27 acts on the clutch ring 20 and is pressed by a compression spring 28 against a first annularly closed control cam 30 of a shift lever 31.
- One leg 32 of the shift fork 27 is slidably mounted relative to the other and is urged against the coupling ring 20 by a spring 33.
- the shift lever 31 has a handle 35 protruding from the housing 2 and can be rotated about an axis 36 running perpendicular to the housing plane.
- the shift lever 31 has, as the first control cam 30, an annular groove, the bottom of which describes approximately a semicircular line.
- the groove base has a large distance measured on two of four sides from the axis 36, so that the coupling ring 20 couples into the gear 19 for slow gear, on one side a medium-sized distance, so that neither of the two gears 18, 19 with the spindle 4 are coupled and on the fourth side a small distance from the axis 36, so that the gear 18 is coupled to the coupling ring 20.
- the control curve 30 is designed such that when turning from the chisel position shown in FIG. 1 without a rotary drive, the shift fork 27 initially does not move, so that a laterally attached to the locking pin 25 is held down by a nose 38 on the shift lever 31 tener extension 39 is released.
- the control curve 30 has a flattened curve section 40.
- the shift lever 31 also has a second closed control cam, which is designed as a protruding plate 42 with two narrow and two long sides.
- the control cam or plate 32 works together with the thrust bearing 14.
- the long sides of the plate 42 lie parallel to the thrust bearing 14, so that the clutch 10 is engaged. If the narrow sides of the plate 42 are parallel to the thrust bearing 14, the clutch 10 disengages due to the force of a clutch spring 43 and the rotary drive member 7 stands still.
- a further rotation of the shift lever 31 by 90 degrees in a clockwise direction results in the hammer mechanism 5 being switched on, which means that hammer drilling is now possible at slow speed.
- the striking mechanism 5 is switched off again and the shift fork is pushed away from the tool holder 3 to the left by the force of the compression spring 28, so that the coupling teeth 21 into the counter teeth 22 of the gear wheel 18 snaps into place.
- rotary drilling is possible at a fast turning speed.
- hammer drilling with a fast rotation speed cannot be selected, as this could overload the motor.
- the shift lever 31 is not firmly coupled to the shift fork 27.
- the springs 28 and 33 ensure when the gears 18 and 19 are switched on that the shift lever 31 can also be turned into its desired position when the toothings 21/22 and 21/23 are tooth-to-tooth.
- the sprung leg 32 or the sprung shift fork 27 itself only push the clutch ring 20 sideways when the clutch teeth 21 can engage in the respective counter teeth 22 or 23.
- the shift lever 31 and the control cams 30, 42 are designed so that the shift lever can be rotated as far as desired in both directions of rotation, that is to say the desired mode of operation can be selected in the shortest possible way.
- the invention is not limited to the exemplary embodiment shown.
- other two-speed transmission types can also be used, which can also be shifted by a longitudinal displacement of a shift element controlled by the control curve of a shift lever.
- the invention is particularly applicable to pneumatic rotary hammers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Percussive Tools And Related Accessories (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4020269A DE4020269A1 (de) | 1990-06-26 | 1990-06-26 | Elektrische schlagbohrmaschine |
DE4020269 | 1990-06-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0463416A1 true EP0463416A1 (fr) | 1992-01-02 |
EP0463416B1 EP0463416B1 (fr) | 1993-09-29 |
Family
ID=6409073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91109155A Expired - Lifetime EP0463416B1 (fr) | 1990-06-26 | 1991-06-05 | Foreuse à percussion électrique |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0463416B1 (fr) |
DE (2) | DE4020269A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0612588A1 (fr) * | 1993-02-26 | 1994-08-31 | Kress-elektrik GmbH + Co. Elektromotorenfabrik | Dispositif de commande pour outils électriques |
EP1393864A1 (fr) * | 2002-09-02 | 2004-03-03 | HILTI Aktiengesellschaft | Outil électrique à main avec rotation et percussion |
US6942435B2 (en) | 2000-02-19 | 2005-09-13 | Robert Bosch Gmbh | Machine tool |
JP2007136586A (ja) * | 2005-11-16 | 2007-06-07 | Max Co Ltd | ハンマドリル |
US8292001B2 (en) | 2007-11-21 | 2012-10-23 | Black & Decker Inc. | Multi-mode drill with an electronic switching arrangement |
CN106457544A (zh) * | 2014-06-12 | 2017-02-22 | 株式会社牧田 | 冲击工具 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4406841C1 (de) * | 1994-03-02 | 1995-04-20 | Metabowerke Kg | Hammerbohrmaschine |
DE19528924B4 (de) * | 1995-08-05 | 2005-01-27 | Scintilla Ag | Elektrische Schlagbohrmaschine |
DE19545260A1 (de) * | 1995-11-24 | 1997-05-28 | Black & Decker Inc | Bohrhammer |
US7717191B2 (en) | 2007-11-21 | 2010-05-18 | Black & Decker Inc. | Multi-mode hammer drill with shift lock |
US7762349B2 (en) | 2007-11-21 | 2010-07-27 | Black & Decker Inc. | Multi-speed drill and transmission with low gear only clutch |
US7770660B2 (en) | 2007-11-21 | 2010-08-10 | Black & Decker Inc. | Mid-handle drill construction and assembly process |
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 |
US7717192B2 (en) | 2007-11-21 | 2010-05-18 | Black & Decker Inc. | Multi-mode drill with mode collar |
JP5837750B2 (ja) * | 2011-02-01 | 2015-12-24 | 株式会社マキタ | 作業工具 |
CN102632481B (zh) * | 2011-02-13 | 2014-12-10 | 南京德朔实业有限公司 | 电锤 |
DE102011103104B4 (de) | 2011-05-25 | 2019-03-28 | Sew-Eurodrive Gmbh & Co Kg | Kupplung für ein Getriebe, Getriebe mit einer Kupplung, Laufkatze für eine Elektrohängebahn mit einem Getriebe |
CN102649266B (zh) * | 2012-04-16 | 2015-04-08 | 制尚电器(浙江)有限公司 | 一种多功能双速电锤 |
CN102873669B (zh) * | 2012-10-15 | 2015-04-01 | 浙江恒友机电有限公司 | 一钮多功能切换结构 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1957235B2 (de) * | 1969-11-14 | 1973-09-06 | Motorisch angetriebene schlagbohrmaschine | |
FR2396155A1 (fr) * | 1977-06-27 | 1979-01-26 | Hilti Ag | Marteau perforateur avec porte-outil blocage |
EP0051923A1 (fr) * | 1980-11-11 | 1982-05-19 | Kango Wolf Power Tools Limited | Perceuse portative |
GB2121717A (en) * | 1982-06-02 | 1984-01-04 | Black & Decker Inc | Improvements in or relating to rotary percussive drills |
DE3321762A1 (de) * | 1982-08-12 | 1984-02-16 | Black & Decker Inc., 19711 Newark, Del. | Bohrhammer |
EP0221009A2 (fr) * | 1985-10-26 | 1987-05-06 | HILTI Aktiengesellschaft | Perceuse à percussion avec interruption de la rotation |
EP0331619A2 (fr) * | 1988-03-04 | 1989-09-06 | Black & Decker Inc. | Marteau de forage rotatif |
-
1990
- 1990-06-26 DE DE4020269A patent/DE4020269A1/de not_active Withdrawn
-
1991
- 1991-06-05 EP EP91109155A patent/EP0463416B1/fr not_active Expired - Lifetime
- 1991-06-05 DE DE91109155T patent/DE59100422D1/de not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1957235B2 (de) * | 1969-11-14 | 1973-09-06 | Motorisch angetriebene schlagbohrmaschine | |
FR2396155A1 (fr) * | 1977-06-27 | 1979-01-26 | Hilti Ag | Marteau perforateur avec porte-outil blocage |
EP0051923A1 (fr) * | 1980-11-11 | 1982-05-19 | Kango Wolf Power Tools Limited | Perceuse portative |
GB2121717A (en) * | 1982-06-02 | 1984-01-04 | Black & Decker Inc | Improvements in or relating to rotary percussive drills |
DE3321762A1 (de) * | 1982-08-12 | 1984-02-16 | Black & Decker Inc., 19711 Newark, Del. | Bohrhammer |
EP0221009A2 (fr) * | 1985-10-26 | 1987-05-06 | HILTI Aktiengesellschaft | Perceuse à percussion avec interruption de la rotation |
EP0331619A2 (fr) * | 1988-03-04 | 1989-09-06 | Black & Decker Inc. | Marteau de forage rotatif |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0612588A1 (fr) * | 1993-02-26 | 1994-08-31 | Kress-elektrik GmbH + Co. Elektromotorenfabrik | Dispositif de commande pour outils électriques |
US6942435B2 (en) | 2000-02-19 | 2005-09-13 | Robert Bosch Gmbh | Machine tool |
EP1393864A1 (fr) * | 2002-09-02 | 2004-03-03 | HILTI Aktiengesellschaft | Outil électrique à main avec rotation et percussion |
JP2007136586A (ja) * | 2005-11-16 | 2007-06-07 | Max Co Ltd | ハンマドリル |
EP1950008A1 (fr) * | 2005-11-16 | 2008-07-30 | Max Co., Ltd. | Marteau perforateur |
EP1950008A4 (fr) * | 2005-11-16 | 2010-11-24 | Max Co Ltd | Marteau perforateur |
US8292001B2 (en) | 2007-11-21 | 2012-10-23 | Black & Decker Inc. | Multi-mode drill with an electronic switching arrangement |
CN106457544A (zh) * | 2014-06-12 | 2017-02-22 | 株式会社牧田 | 冲击工具 |
US20170106517A1 (en) * | 2014-06-12 | 2017-04-20 | Makita Corporation | Impact tool |
EP3156185A4 (fr) * | 2014-06-12 | 2018-01-17 | Makita Corporation | Outil à choc |
CN106457544B (zh) * | 2014-06-12 | 2019-05-31 | 株式会社牧田 | 冲击工具 |
Also Published As
Publication number | Publication date |
---|---|
DE4020269A1 (de) | 1992-01-02 |
EP0463416B1 (fr) | 1993-09-29 |
DE59100422D1 (de) | 1993-11-04 |
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