GB1447867A - Hammer drills - Google Patents
Hammer drillsInfo
- Publication number
- GB1447867A GB1447867A GB4085673A GB4085673A GB1447867A GB 1447867 A GB1447867 A GB 1447867A GB 4085673 A GB4085673 A GB 4085673A GB 4085673 A GB4085673 A GB 4085673A GB 1447867 A GB1447867 A GB 1447867A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- gears
- clutch
- axially
- balls
- 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
Links
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000007935 neutral effect Effects 0.000 abstract 2
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/16—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types with a driving or driven member which both rotates or oscillates on its axis and reciprocates
-
- 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
- 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
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
- B25D17/084—Rotating chucks or sockets
- B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- 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
- B25D2211/068—Crank-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
- B25D2216/0015—Tools having a percussion-only 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
- B25D2216/0023—Tools having a percussion-and-rotation mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/003—Details relating to chucks with radially movable locking elements
- B25D2217/0038—Locking members of special shape
- B25D2217/0042—Ball-shaped locking members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Boring (AREA)
Abstract
1447867 Percussive drills ROBERT BOSCH GmbH 30 Aug 1973 [31 Aug 1972] 40856/73 Heading B3C [Also in Divisions B4 and F2] An electrically operated hammer drill comprises a two-speed transmission unit having a clutch movable into a central position for disengaging the rotary drive, and a percussive mechanism which is disengageable independently of the rotary drive. As shown in Figs. 1 and 3 in which the drill is set for percussive action only, the output shaft 6 of the motor 4 continuously rotates an intermediate shaft 10 through gears 9, 11, the gears 12, 13 on the intermediate shaft meshing continuously with axially-shiftable gears 15, 16 which are freely rotatable about a hollow output shaft 14 unless selected to be drivingly connected thereto. In the position shown, the gears 15, 16 are in the neutral position where an annular recess 19 is opposite four equi-angularly spaced projections 18 on the shaft 14. When the gears 15, 16 are shifted axially one way or the other by means of a shift fork 17 having spring arms 23 movable from outside the housing by an eccentric shift 24 the appropriate axial grooves 20, 21 in the gears drivingly engage the projections 18. The tool head 37 is connected for axial movement in a sleeve 36 by means of balls 38 and the sleeve is connected to the shaft 14 through a safety clutch having balls 30 which yield against a spring-urged ring 31 when a drill bit carried by the tool head jams; the sleeve 36 is secured against rotation by a dog 45. The tool head is hammered by a striker 62 which is driven through an air cushion created by a crank driven cylinder 61. When the motor is to be connected to drive the percussive mechanism through bevel gears 46, 48, a clutch shaft 47 is shifted to the position shown by an eccentric shift 55 where balls 51 drivingly connect the gear 48 to the shaft 47; when the shaft 47 is raised to disengage the clutch, the balls 51 move into an annular groove 57 from the radial bores 51' in the shaft and recesses 52 in the gear. In a second embodiment, Fig. 4 (not shown) the clutch for the crank mechanism consists of an axially-displaceable gear (66) on the inter- . mediate shaft (65) which can be axially moved to drivingly engage one of the two bevel gears of the crank mechanism. In a third embodiment, Fig. 5, the two-speed transmission unit includes a shift sleeve 74 which rotates with the output shaft 14 and is axially movable from the neutral position shown where drivers 75 are opposite an annular recess 78 to a position within axial grooves 76, 77 in the gears. In a fourth embodiment, Fig. 6 (not shown) the clutch for the crank mechanism consists of a shift sleeve (83) which is axially-displaceable to connect a bevel gear (86) with the crank-shaft (81). A fifth embodiment, Fig. 7 (not shown), illustrates the use of rollers (90) instead of balls in the safety clutch.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2242944A DE2242944B2 (en) | 1972-08-31 | 1972-08-31 | Hammer drill |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1447867A true GB1447867A (en) | 1976-09-02 |
Family
ID=5855161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4085673A Expired GB1447867A (en) | 1972-08-31 | 1973-08-30 | Hammer drills |
Country Status (10)
Country | Link |
---|---|
US (1) | US3828863A (en) |
JP (1) | JPS5613596B2 (en) |
BR (1) | BR7306718D0 (en) |
CH (1) | CH560313A5 (en) |
DE (1) | DE2242944B2 (en) |
ES (1) | ES418342A1 (en) |
FR (1) | FR2197680B1 (en) |
GB (1) | GB1447867A (en) |
IT (1) | IT993805B (en) |
NL (1) | NL7311947A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2759136A1 (en) * | 1977-12-30 | 1979-07-12 | Wacker Werke Kg | Transmission for stamping press or stone breaker - has slipping conical clutch to prevent damage if drive is overloaded |
GB2121717A (en) * | 1982-06-02 | 1984-01-04 | Black & Decker Inc | Improvements in or relating to rotary percussive drills |
EP0349482A2 (en) * | 1988-06-27 | 1990-01-03 | HILTI Aktiengesellschaft | Motor-driven hand tool |
GB2285764A (en) * | 1994-01-21 | 1995-07-26 | Bosch Gmbh Robert | Hammer drill speed controller |
CN104653711A (en) * | 2014-12-16 | 2015-05-27 | 天津市诚田丰金属制品有限公司 | Power structure of percussion drill |
Families Citing this family (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1467253A (en) * | 1973-04-05 | 1977-03-16 | Kango Electric Hammers Ltd | Portable percussive tools |
DE2449191C2 (en) * | 1974-10-16 | 1988-03-24 | Robert Bosch Gmbh, 7000 Stuttgart | hammer |
US4114699A (en) * | 1976-01-22 | 1978-09-19 | Licentia Patent-Verwaltungs-Gmbh | Pneumatic rotary hammer device |
DE2618596C2 (en) * | 1976-04-28 | 1984-05-17 | Robert Bosch Gmbh, 7000 Stuttgart | Tool holder |
DE2709946C2 (en) * | 1977-03-08 | 1982-12-23 | Novopress GmbH Pressen und Presswerkzeuge & Co KG, 4000 Düsseldorf | Portable hand tool |
DE2757008C2 (en) * | 1977-12-21 | 1982-04-01 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Pneumatic hammer drill |
DE2844086A1 (en) * | 1978-10-10 | 1980-04-30 | Bosch Gmbh Robert | HAND MACHINE, IN PARTICULAR HAMMER |
DE2938513A1 (en) * | 1979-09-24 | 1981-04-09 | Hilti AG, 9494 Schaan | DRILLING HAMMER |
US4336847A (en) * | 1980-06-27 | 1982-06-29 | Hitachi Koki Company, Limited | Percussion drill |
DE3028464A1 (en) * | 1980-07-26 | 1982-03-18 | C. & E. Fein Gmbh & Co, 7000 Stuttgart | PORTABLE DRUM TOOL |
DE3039669A1 (en) * | 1980-10-21 | 1982-05-27 | Robert Bosch Gmbh, 7000 Stuttgart | DRILLING HAMMER |
JPS5783311A (en) * | 1980-10-31 | 1982-05-25 | Hitachi Koki Co Ltd | Air-cushion-type impact tool |
EP0052507B1 (en) * | 1980-11-18 | 1985-02-13 | Black & Decker Inc. | Percussive drills |
JPS5827554U (en) * | 1981-07-31 | 1983-02-22 | トヨタ自動車株式会社 | Fuel control device during engine deceleration |
DE3205141A1 (en) * | 1982-02-13 | 1983-08-18 | Robert Bosch Gmbh, 7000 Stuttgart | DRILLING HAMMER |
DE3319934A1 (en) * | 1982-06-02 | 1983-12-15 | Black & Decker, Inc. (eine Gesellschaft n.d.Ges.d. Staates Delaware), 19711 Newark, Del. | Percussion drilling machine |
DE3235544A1 (en) * | 1982-09-25 | 1984-03-29 | Robert Bosch Gmbh, 7000 Stuttgart | Drill hammer |
DE3311265A1 (en) * | 1983-03-28 | 1984-10-11 | Hilti Ag, Schaan | ELECTROPNEUMATIC DRILL AND CHISEL HAMMER |
JPS6176205A (en) * | 1984-09-25 | 1986-04-18 | Matsushita Electric Works Ltd | Vibration drill |
DE3527091A1 (en) * | 1985-07-29 | 1987-01-29 | Hilti Ag | DRILLING DEVICE |
JPS6310296U (en) * | 1986-07-04 | 1988-01-23 | ||
DE3625535C2 (en) * | 1986-07-29 | 1994-05-11 | Festo Kg | Eccentric disc grinder |
DE3633675A1 (en) * | 1986-10-03 | 1988-04-14 | Hilti Ag | DRILLING HAMMER WITH STRIKE |
DE3634591A1 (en) * | 1986-10-10 | 1988-04-14 | Black & Decker Inc | Hammer drill with an air-cushion percussive mechanism |
DE3637128A1 (en) * | 1986-10-31 | 1988-05-05 | Hilti Ag | DEVICE FOR AUTOMATIC TOOL-SPECIFIC OPERATING DATA SETTING OF AN ELECTRICAL DRIVE DEVICE FOR INTERCHANGEABLE TOOLS |
JPH0785842B2 (en) * | 1988-07-15 | 1995-09-20 | 松下電工株式会社 | Hammer drill |
JPH0653327B2 (en) * | 1988-04-25 | 1994-07-20 | 松下電工株式会社 | Hammer drill |
JPH0616963B2 (en) * | 1988-07-15 | 1994-03-09 | 松下電工株式会社 | Hammer drill |
JPH0295582A (en) * | 1988-09-30 | 1990-04-06 | Hitachi Koki Co Ltd | Impact drill |
DE4013512A1 (en) * | 1990-04-27 | 1991-10-31 | Black & Decker Inc | SWITCHING DEVICE FOR SWITCHING A POWERED TOOL |
DE4215288A1 (en) * | 1991-07-08 | 1993-01-14 | Bosch Gmbh Robert | DRILLING HAMMER |
DE4137385C2 (en) * | 1991-11-14 | 1993-11-18 | Hilti Ag | Speed control device for a hand-held power tool and method for its production |
US5588496A (en) * | 1994-07-14 | 1996-12-31 | Milwaukee Electric Tool Corporation | Slip clutch arrangement for power tool |
DE19717712A1 (en) * | 1997-04-18 | 1998-10-22 | Black & Decker Inc | Hammer drill |
US6733414B2 (en) | 2001-01-12 | 2004-05-11 | Milwaukee Electric Tool Corporation | Gear assembly for a power tool |
DE10213093B4 (en) * | 2002-03-23 | 2013-06-20 | Andreas Stihl Ag & Co. | Hand drill with a combustion engine |
DE10216051A1 (en) * | 2002-04-11 | 2003-10-23 | Hilti Ag | Pneumatic striking mechanism |
DE102004030760A1 (en) * | 2004-06-25 | 2006-01-19 | Robert Bosch Gmbh | Device with a torque limiting unit |
DE102004047606A1 (en) * | 2004-09-30 | 2006-04-06 | Hilti Ag | Drill and / or chisel hammer |
GB0428210D0 (en) * | 2004-12-23 | 2005-01-26 | Black & Decker Inc | Mode change mechanism |
EP1674207B1 (en) * | 2004-12-23 | 2008-12-10 | BLACK & DECKER INC. | Power tool |
US7314097B2 (en) * | 2005-02-24 | 2008-01-01 | Black & Decker Inc. | Hammer drill with a mode changeover mechanism |
JP4702027B2 (en) | 2005-05-26 | 2011-06-15 | パナソニック電工株式会社 | Hammer drill |
US7980324B2 (en) | 2006-02-03 | 2011-07-19 | Black & Decker Inc. | Housing and gearbox for drill or driver |
DE102006061627A1 (en) * | 2006-12-27 | 2008-07-10 | Robert Bosch Gmbh | Schlagwerk an electric hand tool machine |
DE102007062248A1 (en) * | 2007-12-21 | 2009-06-25 | Robert Bosch Gmbh | Hand tool with a, at least one rotatably mounted intermediate shaft comprehensive gear device |
EP2127820A1 (en) * | 2008-05-26 | 2009-12-02 | Max Co., Ltd. | Driving tool |
JP5128391B2 (en) * | 2008-07-03 | 2013-01-23 | 株式会社マキタ | Hammer drill |
DE102008054692A1 (en) * | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | Hand tool |
JP5395620B2 (en) * | 2009-11-02 | 2014-01-22 | 株式会社マキタ | Impact tool |
WO2012061176A2 (en) | 2010-11-04 | 2012-05-10 | Milwaukee Electric Tool Corporation | Impact tool with adjustable clutch |
DE102012214938B4 (en) * | 2012-08-22 | 2016-11-10 | Metabowerke Gmbh | Gear arrangement for a driven machine tool and machine tool with such a gear arrangement |
CN104405793B (en) * | 2014-11-30 | 2023-07-14 | 重庆泽田汽车部件有限责任公司 | Safety clutch |
CN108895120B (en) * | 2018-07-06 | 2021-12-17 | 甘肃省机械科学研究院有限责任公司 | Bevel gear transmission pair engagement and disengagement device |
JP2020119298A (en) | 2019-01-24 | 2020-08-06 | キオクシア株式会社 | Memory system |
US11529727B2 (en) | 2019-10-21 | 2022-12-20 | Makita Corporation | Power tool having hammer mechanism |
EP3822037A1 (en) * | 2019-11-15 | 2021-05-19 | Hilti Aktiengesellschaft | Impact device assembly |
DE102020210250A1 (en) * | 2020-08-12 | 2022-02-17 | Robert Bosch Gesellschaft mit beschränkter Haftung | hand tool |
CN117571581B (en) * | 2024-01-16 | 2024-03-22 | 山西八建集团有限公司 | Building outer wall seepage water detection device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE651027C (en) * | 1934-11-07 | 1937-10-06 | Union Handels Akt Ges Bisher S | Impact and drilling tool with electric drive and two shafts rotating at different speeds |
US3203490A (en) * | 1963-06-27 | 1965-08-31 | Black & Decker Mfg Co | Compact rotary hammer |
GB1195505A (en) * | 1967-07-31 | 1970-06-17 | Hilti Ag | Hammer Drill |
DE1948055A1 (en) * | 1969-09-23 | 1971-04-01 | Impex Essen Vertrieb | Electrically operated rotary hammer |
-
1972
- 1972-08-31 DE DE2242944A patent/DE2242944B2/en not_active Ceased
-
1973
- 1973-07-06 US US00376935A patent/US3828863A/en not_active Expired - Lifetime
- 1973-07-11 FR FR7325445A patent/FR2197680B1/fr not_active Expired
- 1973-08-09 CH CH1150573A patent/CH560313A5/xx not_active IP Right Cessation
- 1973-08-29 IT IT28316/73A patent/IT993805B/en active
- 1973-08-30 ES ES418342A patent/ES418342A1/en not_active Expired
- 1973-08-30 BR BR6718/73A patent/BR7306718D0/en unknown
- 1973-08-30 NL NL7311947A patent/NL7311947A/xx not_active Application Discontinuation
- 1973-08-30 GB GB4085673A patent/GB1447867A/en not_active Expired
- 1973-08-31 JP JP9814473A patent/JPS5613596B2/ja not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2759136A1 (en) * | 1977-12-30 | 1979-07-12 | Wacker Werke Kg | Transmission for stamping press or stone breaker - has slipping conical clutch to prevent damage if drive is overloaded |
GB2121717A (en) * | 1982-06-02 | 1984-01-04 | Black & Decker Inc | Improvements in or relating to rotary percussive drills |
EP0349482A2 (en) * | 1988-06-27 | 1990-01-03 | HILTI Aktiengesellschaft | Motor-driven hand tool |
EP0349482A3 (en) * | 1988-06-27 | 1991-05-02 | HILTI Aktiengesellschaft | Motor-driven hand tool |
GB2285764A (en) * | 1994-01-21 | 1995-07-26 | Bosch Gmbh Robert | Hammer drill speed controller |
GB2285764B (en) * | 1994-01-21 | 1997-04-16 | Bosch Gmbh Robert | Hammer drill |
CN104653711A (en) * | 2014-12-16 | 2015-05-27 | 天津市诚田丰金属制品有限公司 | Power structure of percussion drill |
Also Published As
Publication number | Publication date |
---|---|
BR7306718D0 (en) | 1974-06-27 |
US3828863A (en) | 1974-08-13 |
FR2197680A1 (en) | 1974-03-29 |
DE2242944A1 (en) | 1974-03-14 |
AU5984873A (en) | 1975-03-06 |
IT993805B (en) | 1975-09-30 |
JPS4968367A (en) | 1974-07-02 |
DE2242944B2 (en) | 1981-04-23 |
JPS5613596B2 (en) | 1981-03-30 |
ES418342A1 (en) | 1976-03-16 |
NL7311947A (en) | 1974-03-04 |
FR2197680B1 (en) | 1976-11-12 |
CH560313A5 (en) | 1975-03-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |