SE8205435L - HANDHALL CUTTING TOOL - Google Patents

HANDHALL CUTTING TOOL

Info

Publication number
SE8205435L
SE8205435L SE8205435A SE8205435A SE8205435L SE 8205435 L SE8205435 L SE 8205435L SE 8205435 A SE8205435 A SE 8205435A SE 8205435 A SE8205435 A SE 8205435A SE 8205435 L SE8205435 L SE 8205435L
Authority
SE
Sweden
Prior art keywords
hammer
electric motor
rotor
motor
drive shaft
Prior art date
Application number
SE8205435A
Other languages
Swedish (sv)
Other versions
SE8205435D0 (en
SE442841B (en
Inventor
C S Hartwig
K G B Ragnmark
Original Assignee
Cerac Inst Sa
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 Cerac Inst Sa filed Critical Cerac Inst Sa
Priority to SE8205435A priority Critical patent/SE442841B/en
Publication of SE8205435D0 publication Critical patent/SE8205435D0/en
Publication of SE8205435L publication Critical patent/SE8205435L/en
Publication of SE442841B publication Critical patent/SE442841B/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
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

This handheld hammer tool driven by a rotary electric motor (17) and a hammer (14) is contained in housing (13). The hammer (14) consists of a drive shaft (24) with an eccentric crankpin (35) for a connecting rod (43) connected to a driving piston (40) moving to and fro in a cylinder (42) to drive a hammer piston (41) against a tool via an air cushion (44) between the pistons (40, 41). The hammer (14) drive shaft (24) is also the rotor shaft of the electric motor (17), which means that the hammer and the electric motor are driven at the same speed. The electric motor is an outer pole motor with the rotor's (18) electromagnetically active parts (23, 49) situated outside the surrounding stator's (19) corresponding parts (21, 22), whereby the rotor can also serve as flywheel and fan. The electric motor is a brushless asynchronous motor designed for high frequency use.<IMAGE>
SE8205435A 1982-09-22 1982-09-22 Handheld tool driven by a brushless asynchronous motor SE442841B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8205435A SE442841B (en) 1982-09-22 1982-09-22 Handheld tool driven by a brushless asynchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8205435A SE442841B (en) 1982-09-22 1982-09-22 Handheld tool driven by a brushless asynchronous motor

Publications (3)

Publication Number Publication Date
SE8205435D0 SE8205435D0 (en) 1982-09-22
SE8205435L true SE8205435L (en) 1984-03-23
SE442841B SE442841B (en) 1986-02-03

Family

ID=20347958

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8205435A SE442841B (en) 1982-09-22 1982-09-22 Handheld tool driven by a brushless asynchronous motor

Country Status (1)

Country Link
SE (1) SE442841B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19839963A1 (en) * 1998-09-02 2000-03-09 Hilti Ag Power tool

Also Published As

Publication number Publication date
SE8205435D0 (en) 1982-09-22
SE442841B (en) 1986-02-03

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