WO2008017150A3 - Hammer drill - Google Patents

Hammer drill Download PDF

Info

Publication number
WO2008017150A3
WO2008017150A3 PCT/CA2007/001376 CA2007001376W WO2008017150A3 WO 2008017150 A3 WO2008017150 A3 WO 2008017150A3 CA 2007001376 W CA2007001376 W CA 2007001376W WO 2008017150 A3 WO2008017150 A3 WO 2008017150A3
Authority
WO
WIPO (PCT)
Prior art keywords
drive shaft
impact
actuator mechanism
relation
roller member
Prior art date
Application number
PCT/CA2007/001376
Other languages
French (fr)
Other versions
WO2008017150A2 (en
Inventor
Gerard Grand
Fern Beauchamp
Bradley Little
Original Assignee
Gerard Grand
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gerard Grand filed Critical Gerard Grand
Publication of WO2008017150A2 publication Critical patent/WO2008017150A2/en
Publication of WO2008017150A3 publication Critical patent/WO2008017150A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/10—Means for driving the impulse member comprising a cam mechanism
    • B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
    • B25D11/104—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool with rollers or balls as cam surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/10—Means for driving the impulse member comprising a cam mechanism
    • B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)

Abstract

A hammer drill comprises a casing, and an electric motor mounted within the casing. A drive shaft is connected in driven relation to the electric motor, and defines a longitudinal axis. A drill bit chuck is mounted in driven relation to the drive shaft. An impact member having at least one impact portion is mounted in fixed relation on the drive shaft for rotation herewith. An actuator mechanism has at least one roller member rotat ionally mounted thereon. The actuator mechanism is mounted in freely rotatable relation on the drive shaft for longitudinal sliding movement along the drive shaft between an operatively engaged position whereat the at least one roller member engages the impact surface of the impact member as the drive shaft rotates with respect to the actuator mechanism, so as to thereby impart reciprocaling motion along the longitudinal axis to the drive shaft and the drill bit chuck, and a disengaged position whereat the at least one roller member is removed from the engagement with the impact surface of the impact member.
PCT/CA2007/001376 2006-08-08 2007-08-08 Hammer drill WO2008017150A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,556,217 2006-08-08
CA 2556217 CA2556217A1 (en) 2006-08-08 2006-08-08 Hammer drill

Publications (2)

Publication Number Publication Date
WO2008017150A2 WO2008017150A2 (en) 2008-02-14
WO2008017150A3 true WO2008017150A3 (en) 2008-05-15

Family

ID=39030939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2007/001376 WO2008017150A2 (en) 2006-08-08 2007-08-08 Hammer drill

Country Status (2)

Country Link
CA (1) CA2556217A1 (en)
WO (1) WO2008017150A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2223727A (en) * 1939-04-24 1940-12-03 Homen Carl Percussion drill
US2968960A (en) * 1959-12-08 1961-01-24 Fulop Charles Variable impact drill
US3000225A (en) * 1957-11-26 1961-09-19 Rawlplug Co Ltd Rotary drill heads
US4450919A (en) * 1983-01-03 1984-05-29 Cousineau Bernard L Drill attachment
US5494115A (en) * 1994-10-25 1996-02-27 Hwong; Steven Electric hammer drill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2223727A (en) * 1939-04-24 1940-12-03 Homen Carl Percussion drill
US3000225A (en) * 1957-11-26 1961-09-19 Rawlplug Co Ltd Rotary drill heads
US2968960A (en) * 1959-12-08 1961-01-24 Fulop Charles Variable impact drill
US4450919A (en) * 1983-01-03 1984-05-29 Cousineau Bernard L Drill attachment
US5494115A (en) * 1994-10-25 1996-02-27 Hwong; Steven Electric hammer drill

Also Published As

Publication number Publication date
CA2556217A1 (en) 2008-02-08
WO2008017150A2 (en) 2008-02-14

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