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EP0316574A3 - Electric switch system for a power tool - Google Patents

Electric switch system for a power tool Download PDF

Info

Publication number
EP0316574A3
EP0316574A3 EP88116929A EP88116929A EP0316574A3 EP 0316574 A3 EP0316574 A3 EP 0316574A3 EP 88116929 A EP88116929 A EP 88116929A EP 88116929 A EP88116929 A EP 88116929A EP 0316574 A3 EP0316574 A3 EP 0316574A3
Authority
EP
European Patent Office
Prior art keywords
motor
power tool
moveable block
electric switch
selection lever
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Withdrawn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
EP88116929A
Other languages
German (de)
French (fr)
Other versions
EP0316574A2 (en
Inventor
Kunio C/O Omron Tateisi Electronics Co. Nagata
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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
Priority claimed from JP28820887A external-priority patent/JPH01130437A/en
Priority claimed from JP28822987A external-priority patent/JPH01130439A/en
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Publication of EP0316574A2 publication Critical patent/EP0316574A2/en
Publication of EP0316574A3 publication Critical patent/EP0316574A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • H01H9/063—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner enclosing a reversing switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Portable Power Tools In General (AREA)

Abstract

An electric switch system for a DC motor powered power tool, comprising: a moveable block (20) which is adapted to be manually displaced between a first position and a second position for speed control of the motor; a fixed block arranged adjacent to the first moveable block; a manual selection lever (41) pivotally attached to the fixed block and adapted to be manually rotated from a neutral middle position to either side for the selection of the rotational direction of the motor; a cam structure for permitting the manual rotation of the manual selection lever in either direction away from the middle neutral position only when the moveable block is at the first position and keeping the angularly displaced state of the manual selection lever when the moveable block is displaced away from the first position. Thus, the selection of the rotational direction of the motor and the speed control of the motor can be accomplished as a continuous single operation, and the convenience of the power tool is improved. Further, since the composite control functions can be incorporated into a highly simplified integral unit, the manufacturing cost is reduced and the reliability of the system is improved.
EP88116929A 1987-11-13 1988-10-12 Electric switch system for a power tool Withdrawn EP0316574A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP28820887A JPH01130437A (en) 1987-11-13 1987-11-13 Switch for motor driven tool
JP288208/87 1987-11-13
JP288229/87 1987-11-14
JP28822987A JPH01130439A (en) 1987-11-14 1987-11-14 Switch for motor driven tool

Publications (2)

Publication Number Publication Date
EP0316574A2 EP0316574A2 (en) 1989-05-24
EP0316574A3 true EP0316574A3 (en) 1990-08-08

Family

ID=26557075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116929A Withdrawn EP0316574A3 (en) 1987-11-13 1988-10-12 Electric switch system for a power tool

Country Status (1)

Country Link
EP (1) EP0316574A3 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE677819A (en) * 1965-07-12 1966-08-01
US3456230A (en) * 1965-08-23 1969-07-15 Lucerne Products Inc Electrical switch apparatus
JPS6222331A (en) * 1985-07-19 1987-01-30 株式会社マキタ Switch for dc power tool
US4665290A (en) * 1985-09-30 1987-05-12 Eaton Corporation Trigger operated portable electric tool switch
FR2595171A1 (en) * 1986-02-28 1987-09-04 Peugeot Outillage Elect Hand-held electric machine, in particular drill/screwdriver with rechargeable battery supply

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE677819A (en) * 1965-07-12 1966-08-01
US3456230A (en) * 1965-08-23 1969-07-15 Lucerne Products Inc Electrical switch apparatus
JPS6222331A (en) * 1985-07-19 1987-01-30 株式会社マキタ Switch for dc power tool
US4665290A (en) * 1985-09-30 1987-05-12 Eaton Corporation Trigger operated portable electric tool switch
FR2595171A1 (en) * 1986-02-28 1987-09-04 Peugeot Outillage Elect Hand-held electric machine, in particular drill/screwdriver with rechargeable battery supply

Also Published As

Publication number Publication date
EP0316574A2 (en) 1989-05-24

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19881012

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Effective date: 19920604

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18D Application deemed to be withdrawn

Effective date: 19921015