EP0212231A2 - Dispositif d'actionnement pour un commutateur, en particulier sur une machine-outil à main - Google Patents

Dispositif d'actionnement pour un commutateur, en particulier sur une machine-outil à main Download PDF

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Publication number
EP0212231A2
EP0212231A2 EP86109575A EP86109575A EP0212231A2 EP 0212231 A2 EP0212231 A2 EP 0212231A2 EP 86109575 A EP86109575 A EP 86109575A EP 86109575 A EP86109575 A EP 86109575A EP 0212231 A2 EP0212231 A2 EP 0212231A2
Authority
EP
European Patent Office
Prior art keywords
operating means
switch
actuating device
ramp
return spring
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.)
Granted
Application number
EP86109575A
Other languages
German (de)
English (en)
Other versions
EP0212231A3 (en
EP0212231B1 (fr
Inventor
Manfred Stäbler
Walter Barth
Winfried Helm
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0212231A2 publication Critical patent/EP0212231A2/fr
Publication of EP0212231A3 publication Critical patent/EP0212231A3/de
Application granted granted Critical
Publication of EP0212231B1 publication Critical patent/EP0212231B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/026—Application dead man switch: power must be interrupted on release of operating member

Definitions

  • the invention relates to an actuator according to the preamble of the main claim.
  • Such an actuator is already known from DE-OS 30 23 691 and has various advantages.
  • the operating means of this actuating device snaps into a latching end position with the support of its return spring at the end of its switch-on displacement path and is held there by the action of its return spring.
  • the switch accordingly remains in the switched-on position until the operator deliberately releases the latching connection of the operating means with its guide, for example the housing of a machine tool.
  • such actuators are not suitable as so-called dead man's switches, the operating means of which only have to be released to let the switch come into the off position.
  • the actuating device according to the invention with the characterizing features of the main claim has the advantage that it creates a dead man's switch, which can be kept practically fatigue-free in its switched-on position. Furthermore, that it creates the best prerequisites with a slight change in the operating means to convert an actuating device which can only be brought into the switch-off position consciously into an actuating device which works as a dead man's switch. Through the ramp, a slight pressure on the operating means transversely to its switch-on device is sufficient to maintain the switch-on position. The required holding force can be varied by selecting the slope of the ramp.
  • the measures listed in the subclaims enable advantageous developments and improvements of the actuating device specified in the main claim.
  • the arrangement of two ramp-forming ribs and the arrangement of a latching recess in the housing and a latching lug on the operating means make separate storage of two operating means required for the different purposes unnecessary. If the dead man function is required for the intended switch, the latch on the operating device is simply broken off. This operating means then works together with the ramps in the manner according to the invention. If the latching lug is left on the operating means, the actuating device operates in the form described with the switch-on position until the return spring that maintains is released arbitrarily.
  • FIG. 1 shows a longitudinal section through an actuating device according to the invention with an operating means provided with a latch
  • FIG. 2 shows a side view of FIG. 1
  • FIG. 3 shows a longitudinal section like FIG. 1 with an operating device from which the latch has been broken off
  • FIG. 4 shows a side view of FIG 3
  • FIG. 5 shows a longitudinal section like FIG. 3, which shows a different design of the holding surfaces of the ramps.
  • a housing 1 of a hand tool holds a switch 2, a linkage 3, a tension spring 4 and their abutment 5.
  • a bore 6 of a driver pin 7 one Operating means 8 engages the free end of the tension spring 4.
  • a recess 9 can be penetrated by the driver pin 7.
  • the driver pin 7 also passes through a guide slot 10 in a housing wall 11 on the outer surface of which the operating means 8 bears.
  • a switch finger 12 of the switch 2 passes through a recess 13 in the switch-side end of the linkage 3.
  • a latch opening 14 in the housing wall 11 is designed to engage a latch 15 of the operating means 8.
  • Ribs 16 are arranged on both sides of the guide slot 10 and the latching opening 14 and subsequent to the latching opening 14, which have a ramp 17 inclined in the switch-on direction for the switch 2.
  • the two ribs 16 are overlapped by the operating means 8, which is hollow towards the housing wall 11.
  • the front wall of the operating means 8 is referred to as the support wall 18 because it is used to support the operating means 8 on the ribs 16.
  • the support wall 18 is supported on the ribs 16 in the switch-on position shown in FIG.
  • the support wall 18 slides when the operating means 8 is moved in the direction of its switch-on position (arrow 19) over the ribs 16 and their inclined ramps 17 until the catch 15 of the operating means 8 according to FIGS. 1 and 2 meets the outer surface of the housing wall 11 and over this finally slides into the latch opening 14.
  • the tension spring 4 pulling in the direction of an arrow 20 in the opposite direction supports the latching movement by means of the tilting movement generated by it. This tilting moment also causes the tension spring 4 to hold the catch 15 in engagement with the catch opening 14 until the operator releases this catch connection by pressing on the end 18 of the operating means 8 opposite the support wall 18.
  • FIGS. 1 and 2 illustrate this mode of operation of the actuating device according to FIGS. 1 to 4.
  • the same exemplary embodiment with the design of the operating means 8 according to FIGS. 3 and 4 acts as a dead man's switch. Supported by a notch 21 at the root of the locking lug 15, the locking lug 15 was broken off here. In the switched-on position of the operating means 8 modified in this way, the support wall 8 bears against the ramps 17. The tension of the tension spring 4 is unable to pull the operating means 8 over the ramps 17 and the remaining area of the ribs 16 as long as the operator presses the operating means 8 towards the housing wall 11. The force to be applied for this pressure perpendicular to the switching movement is substantially less than the force with which the tension spring 4 can be overcome directly.
  • FIG. 5 shows an operating means 8 in which the latch 15 has broken off.
  • the ramps 22 have two transverse grooves 23 which are narrower than the support wall 18 is thick.
  • this operating means tilts around the lower edge of the support wall 18 under the tension of the tension spring 4 until the sharp inner edge is lifted out of the transverse groove 23 into which it had engaged. Then the support surface of the support wall 18 slides freely over the ramps 17. The switching finger 12 of the switch 2 is also brought into its switch-off position in this way.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Mechanical Control Devices (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP19860109575 1985-08-10 1986-07-12 Dispositif d'actionnement pour un commutateur, en particulier sur une machine-outil à main Expired - Lifetime EP0212231B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853528741 DE3528741A1 (de) 1985-08-10 1985-08-10 Betaetigungsvorrichtung fuer einen schalter, insbesondere an einer handwerkzeugmaschine
DE3528741 1985-08-10

Publications (3)

Publication Number Publication Date
EP0212231A2 true EP0212231A2 (fr) 1987-03-04
EP0212231A3 EP0212231A3 (en) 1988-11-23
EP0212231B1 EP0212231B1 (fr) 1991-11-21

Family

ID=6278210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860109575 Expired - Lifetime EP0212231B1 (fr) 1985-08-10 1986-07-12 Dispositif d'actionnement pour un commutateur, en particulier sur une machine-outil à main

Country Status (3)

Country Link
US (1) US4973807A (fr)
EP (1) EP0212231B1 (fr)
DE (2) DE3528741A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018217991A1 (de) * 2018-10-22 2020-04-23 Robert Bosch Gmbh Betätigungseinheit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6686548B2 (en) * 2002-05-20 2004-02-03 Ruey-Zon Chen Quick shut-off device for grinding tool
US8087977B2 (en) * 2005-05-13 2012-01-03 Black & Decker Inc. Angle grinder
JP5510887B2 (ja) * 2010-01-13 2014-06-04 日立工機株式会社 電動工具
DE102011075196A1 (de) * 2011-05-04 2012-11-08 Robert Bosch Gmbh Werkzeugmaschinenschaltvorrichtung
US10121615B1 (en) * 2017-06-27 2018-11-06 Dinkle Enterprise Co., Ltd. Signal feedback apparatus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1592225A (en) * 1922-08-21 1926-07-13 Alphonse F Pieper Electrical tool handle and switch
FR992792A (fr) * 1949-08-12 1951-10-23 App Et D Expl Des Etablissemen Dispositif pour la commande de l'ouverture et de la fermeture de circuits électriques
US3806685A (en) * 1972-10-04 1974-04-23 Chromerics Inc Linear cam slide switch with guide means and conductive sheet contact
US3886341A (en) * 1973-05-02 1975-05-27 Bowman Ali Inc Switch operating device for use with an over center diaphragm switch contact assembly with contact ramp camming surface
US3854020A (en) * 1973-06-29 1974-12-10 Black & Decker Mfg Co Trigger mechanism for hand-operated power device including stationary locking device which provides lock-off and lock-on operation
US4023001A (en) * 1975-09-02 1977-05-10 Milwaukee Electric Tool Corporation Locking member for hand-held trigger actuated switch
US4132873A (en) * 1977-03-16 1979-01-02 General Time Corporation Multiposition switch
GB2070207B (en) * 1980-02-19 1983-03-23 Desoutter Ltd Safety catch for a power tool
US4331844A (en) * 1980-02-29 1982-05-25 Shigeru Saitoh Electric switch device
DE3023691A1 (de) * 1980-06-25 1982-01-21 Robert Bosch Gmbh, 7000 Stuttgart Schalter mit einem bedienmittel, insbesondere an einer handwerkzeugmaschine
DE3201744A1 (de) * 1982-01-21 1983-07-28 Karl M. Reich Maschinenfabrik GmbH, 7440 Nürtingen Schaltschieber fuer elektrowerkzeuge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018217991A1 (de) * 2018-10-22 2020-04-23 Robert Bosch Gmbh Betätigungseinheit

Also Published As

Publication number Publication date
EP0212231A3 (en) 1988-11-23
EP0212231B1 (fr) 1991-11-21
DE3682548D1 (de) 1992-01-02
DE3528741A1 (de) 1987-02-12
US4973807A (en) 1990-11-27

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