DE3505544A1 - Hammer drill - Google Patents

Hammer drill

Info

Publication number
DE3505544A1
DE3505544A1 DE19853505544 DE3505544A DE3505544A1 DE 3505544 A1 DE3505544 A1 DE 3505544A1 DE 19853505544 DE19853505544 DE 19853505544 DE 3505544 A DE3505544 A DE 3505544A DE 3505544 A1 DE3505544 A1 DE 3505544A1
Authority
DE
Germany
Prior art keywords
crank
piston
hammer drill
crankpin
rotation
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.)
Withdrawn
Application number
DE19853505544
Other languages
German (de)
Inventor
Peter Brix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to DE19853505544 priority Critical patent/DE3505544A1/en
Publication of DE3505544A1 publication Critical patent/DE3505544A1/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D11/00Portable percussive tools with electromotor or other motor drive
    • B25D11/005Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D11/00Portable percussive tools with electromotor or other motor drive
    • B25D11/06Means for driving the impulse member
    • B25D11/12Means for driving the impulse member comprising a crank mechanism
    • B25D11/125Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D16/00Portable 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2211/00Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003Crossed drill and motor spindles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2211/00Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/06Means for driving the impulse member
    • B25D2211/061Swash-plate actuated impulse-driving mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2250/00General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/005Adjustable tool components; Adjustable parameters
    • B25D2250/021Stroke length

Abstract

The hammer drill (1) has a striking element (11) which is set in reciprocating movement by a piston (13) via an air cushion or a spring element. To perform a stroke movement, the piston (13) is connected to a connecting rod (14) which is driven by the crank (16). The crank (16) has a crankpin (17) inclined at an acute angle to its axis of rotation. To change the piston stroke, the crank (16) is displaced along the axis of rotation, as a result of which the effective crank radius of the crankpin (17) is adjusted. <IMAGE>
DE19853505544 1985-02-18 1985-02-18 Hammer drill Withdrawn DE3505544A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853505544 DE3505544A1 (en) 1985-02-18 1985-02-18 Hammer drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853505544 DE3505544A1 (en) 1985-02-18 1985-02-18 Hammer drill

Publications (1)

Publication Number Publication Date
DE3505544A1 true DE3505544A1 (en) 1986-08-21

Family

ID=6262834

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853505544 Withdrawn DE3505544A1 (en) 1985-02-18 1985-02-18 Hammer drill

Country Status (1)

Country Link
DE (1) DE3505544A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3922357A1 (en) * 1989-07-07 1991-01-17 Licentia Gmbh Adjustable electropneumatic hammer drill - incorporates system to vary stroke of piston which actuates hammer head
EP0560512A1 (en) * 1992-03-07 1993-09-15 Black &amp; Decker Inc. Rotary hammer
EP1172180A2 (en) 2000-07-14 2002-01-16 HILTI Aktiengesellschaft Percussion electrohandtool apparatus
EP1182012A2 (en) * 2000-07-18 2002-02-27 HILTI Aktiengesellschaft Electrically powered portable tool with electro-pneumatic percussion mechanism
EP1437200A1 (en) * 2003-01-10 2004-07-14 Makita Corporation Reciprocating power tool
GB2423045A (en) * 2005-02-10 2006-08-16 Black & Decker Inc Hammer with adjustable amplitude of oscillation
WO2006120051A1 (en) * 2005-05-11 2006-11-16 Robert Bosch Gmbh Electric machine tool
EP2017039A3 (en) * 2007-07-19 2012-09-05 HILTI Aktiengesellschaft Powered hand-tool with percussion mechanism
DE102017209830A1 (en) * 2017-06-12 2018-12-13 Robert Bosch Gmbh Hand tool

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3922357A1 (en) * 1989-07-07 1991-01-17 Licentia Gmbh Adjustable electropneumatic hammer drill - incorporates system to vary stroke of piston which actuates hammer head
EP0560512A1 (en) * 1992-03-07 1993-09-15 Black &amp; Decker Inc. Rotary hammer
EP1172180A2 (en) 2000-07-14 2002-01-16 HILTI Aktiengesellschaft Percussion electrohandtool apparatus
US6520266B2 (en) * 2000-07-14 2003-02-18 Hilti Aktiengesellschaft Percussion electrical hand-held tool
EP1182012A2 (en) * 2000-07-18 2002-02-27 HILTI Aktiengesellschaft Electrically powered portable tool with electro-pneumatic percussion mechanism
EP1182012A3 (en) * 2000-07-18 2004-01-14 HILTI Aktiengesellschaft Electrically powered portable tool with electro-pneumatic percussion mechanism
EP1437200A1 (en) * 2003-01-10 2004-07-14 Makita Corporation Reciprocating power tool
US7059425B2 (en) 2003-01-10 2006-06-13 Makita Corporation Reciprocating power tool
GB2423045A (en) * 2005-02-10 2006-08-16 Black & Decker Inc Hammer with adjustable amplitude of oscillation
WO2006120051A1 (en) * 2005-05-11 2006-11-16 Robert Bosch Gmbh Electric machine tool
EP2017039A3 (en) * 2007-07-19 2012-09-05 HILTI Aktiengesellschaft Powered hand-tool with percussion mechanism
DE102017209830A1 (en) * 2017-06-12 2018-12-13 Robert Bosch Gmbh Hand tool

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination