Invention Grant
- Patent Title: Hand-held machine tool with slip clutch
- Patent Title (中): 带滑动离合器的手持式机床
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Application No.: US11807677Application Date: 2007-05-29
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Publication No.: US07861797B2Publication Date: 2011-01-04
- Inventor: Markus Hartmann , Manfred Ludwig
- Applicant: Markus Hartmann , Manfred Ludwig
- Applicant Address: LI Schaan
- Assignee: Hilti Aktiengesellschaft
- Current Assignee: Hilti Aktiengesellschaft
- Current Assignee Address: LI Schaan
- Agency: Abelman, Frayne & Schwab
- Priority: DE102006000252 20060530
- Main IPC: B25D15/00
- IPC: B25D15/00 ; B25D16/00 ; B25D11/12

Abstract:
An at least partially rotating and axially percussive hand-held machine tool (4) has an impact mechanism (5) with a guide tube (6) in which a percussion piston (7) is driven in an axially percussive manner by a pneumatic spring (8) and with a slip clutch (10) which is driven in rotation, encloses the guide tube (6), is provided axially with cams (9), and has a driving sleeve (11) and driven sleeve (12) which are biased axially relative to one another under pressure by a spring (13). The driving sleeve (11) is connected by positive engagement to a control sleeve (14) coaxial to the driving sleeve by balls (18) which partially engage, respectively, in two control contours (19a, 19b) of the driving sleeve (11) and of the control sleeve (14), which control contours (19a, 19b) are arranged partially opposite one another, and the driving sleeve (11) is positively guided in such a way that the driving sleeve (11), which is axially biased under pressure by the spring (13), is displaced axially and rotated relative to the control sleeve (14) when a limiting torque is exceeded.
Public/Granted literature
- US20070289759A1 Hand-held machine tool with slip clutch Public/Granted day:2007-12-20
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