EP0164307A1 - Mécanisme à gâchette pour l'actionnement d'un dispositif de commande et son utilisation - Google Patents

Mécanisme à gâchette pour l'actionnement d'un dispositif de commande et son utilisation Download PDF

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Publication number
EP0164307A1
EP0164307A1 EP85810188A EP85810188A EP0164307A1 EP 0164307 A1 EP0164307 A1 EP 0164307A1 EP 85810188 A EP85810188 A EP 85810188A EP 85810188 A EP85810188 A EP 85810188A EP 0164307 A1 EP0164307 A1 EP 0164307A1
Authority
EP
European Patent Office
Prior art keywords
control
handle
pusher
arrangement according
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Withdrawn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
EP85810188A
Other languages
German (de)
English (en)
Inventor
Heinz Steiner
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.)
Schweizerische Industrie Gesellschaft
Original Assignee
Schweizerische Industrie Gesellschaft
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 Schweizerische Industrie Gesellschaft filed Critical Schweizerische Industrie Gesellschaft
Publication of EP0164307A1 publication Critical patent/EP0164307A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04—Handles; Handle mountings
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/04—Controlling members for hand actuation by pivoting movement, e.g. levers

Definitions

  • the present invention relates to a hand lever arrangement according to the preamble of independent claim 1 and a use according to the preamble of claim 6.
  • Pneumatically driven tools have a reciprocating piston in a cylinder. Air is alternately supplied to the two cylinder spaces thus formed, for example by means of a flutter control.
  • the compressed air flows into the pneumatic drive and the piston is moved and strikes an anvil or directly on the tool, e.g. a chisel or the like.
  • a control pusher is installed in a handle such that the control pusher in the inactive position is pressed outwards by a resilient valve actuator via a valve rod and thus protrudes beyond the circumferential surface of the handle.
  • the control handle consists of a hard material in the form of an elongated rod, each with a projection at the ends. One projection forms a pivot bearing point with a support in the handle and the other forms a control surface for the valve rod.
  • the control handle first moves in parallel with itself by means of a manual force and after lying on the support in the handle in the manner of a one-armed lever, in which the manual force between the pivot bearing point and the valve rod comes into effect. This causes an increase in the force to be applied at the moment when the valve rod is moved. This forms a safeguard against unintentional actuation.
  • DE-A 26 03 784 describes a safety valve control to avoid accidental actuation of an outwardly projecting control handle, e.g. if the tool is placed carelessly or falls down.
  • the control head according to the drawing is designed as a cap for a demolition hammer and accordingly closes the casing of the tool with the pneumatic drive of known design located therein.
  • An example embodiment of a pneumatic tool is described and shown in EP-B 15 700. It is therefore sufficient if only the hand lever arrangement is described here in order to avoid unnecessary repetitions.
  • an articulated socket 7 is formed by means of a circumferential rib 6 above the handle 3, in which, together with the recess 4 and the control pin 12, the control lever 5 is secured in the simplest way against falling out.
  • a bore 11 for a valve pin 12 against the air line 13 is present in the handle 3 from the recess base 10.
  • the air line 13 there is a ball valve with a ball 16 seated on a valve seat 14 and pressed against it by means of a helical spring 15.
  • the valve pin 12 pressed into the air line 13 by the handle 3 thus pushes the ball 16 against the force of Spring 15 away from valve seat 14 and compressed air can lie to the cylinder as long as control pusher 5 is pressed into recess 4.
  • control pusher 5 In order to prevent the skin fold between the thumb and forefinger from being pinched between the rib 6 and the control pusher 5 when the control pusher 5 is released, the control pusher 5 also has an upright protective flange 9.
  • control pusher 20 designed according to the invention is on Rod end 21 is provided with a leaf spring 22. As shown, this can be integrally connected to the control pusher 20 or it could be attached to the control pusher 20 as a separate part. The length of the control pusher 20 is greater than that of the control pusher 5 in FIG. 1.
  • control pusher Due to the action of the leaf spring 22, the control pusher is pushed away from the bottom 23 of the socket 7 and the rear end 24 of the control pusher 20 is pressed out of the recess 4, so that protection against unintentional actuation is ensured.
  • control lever 20 With an integrally formed detent 25, the control lever 20 thus lies on a detent surface 26 on the handle 3. To actuate the valve pin 12, the control pusher 20 must therefore first be moved against the force of the leaf spring 22 until the locking lug 25 can slide into the recess 4. Only now can the control pin 20 be used to actuate the valve pin.
  • the control pusher 20 has a flange 27 for protecting the user.
  • the direction of movement according to arrow A includes an obtuse angle with the axis of the valve pin 12. This angle could also be a large, acute angle or be a right angle. But it is also important that the direction of the spring pressure runs approximately towards this arrow A.
  • the joint is made smaller and it is located above the longitudinal axis of the control lever 40 and consists of an articulated socket 41 and a joint head 42.
  • a locking lug 44 on the control lever 40 and a corresponding contact surface 45 on the handle 3 form the Protection against unintentional actuation.
  • the spring means consists of a helical spring 46 and a pusher pin 47 in an axial bore 48 in the control pusher 40. The mode of operation is the same as in the example described above.
  • control lever 50 is provided at the outer end 51 with an articulated disk 52 which is held in an articulated socket 53 in the handle 3.
  • the required locking lug 54 is located close to the opposite end 59 of the control pusher and the locking surface 55 is located next to the valve pin.
  • a leaf spring 56 is shown in a cavity 57 similar to that in FIG. 2 in order to inactivate the control pusher 50 to hold the samer position with its catch 54 on the catch surface 55.
  • FIG. 4 a spring means similar to FIG. 4 could also be used here, and the type of locking lug and locking surface could also be used here similar to that of FIGS. 2 and 4.
  • the locking lug 25, 44, 54 can be integrally formed on the control lever as well as on the counterpart instead of the locking surface 26, 45, 55, in which case the locking surface is of course to be attached to the control lever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Power Tools In General (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP85810188A 1984-05-29 1985-04-26 Mécanisme à gâchette pour l'actionnement d'un dispositif de commande et son utilisation Withdrawn EP0164307A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH264084A CH663847A5 (de) 1984-05-29 1984-05-29 Handdrueckeranordnung zur betaetigung einer steuervorrichtung und mit ihr betaetigtes werkzeug.
CH2640/84 1984-05-29

Publications (1)

Publication Number Publication Date
EP0164307A1 true EP0164307A1 (fr) 1985-12-11

Family

ID=4238303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810188A Withdrawn EP0164307A1 (fr) 1984-05-29 1985-04-26 Mécanisme à gâchette pour l'actionnement d'un dispositif de commande et son utilisation

Country Status (3)

Country Link
EP (1) EP0164307A1 (fr)
JP (1) JPS613218A (fr)
CH (1) CH663847A5 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259463A (en) * 1992-10-02 1993-11-09 Ingersoll-Rand Company Throttle lever system for a percussive, fluid-activated apparatus
WO1999054093A1 (fr) * 1998-04-22 1999-10-28 Institut National De Recherche Et De Securite Pour La Prevention Des Accidents Du Travail Et Des Maladies Professionnelles Pistolet a clouer et agrafeuse pneumatique
FR2829418A1 (fr) * 2001-09-11 2003-03-14 Bernard Emilian Appareil d'entrainement en rotation par air comprime, d'un outil
GB2396577A (en) * 2002-12-23 2004-06-30 Milwaukee Electric Tool Corp Trigger assembly for a power tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5255959B2 (ja) * 2008-09-03 2013-08-07 株式会社マキタ 作業工具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2616391A1 (fr) * 1976-04-14 1976-12-23
DE2839545A1 (de) * 1978-09-12 1980-03-20 Maco Meudon Sa Vorrichtung zum steuern der pressluftzufuhr eines schlagarbeitsgeraetes
EP0028029A1 (fr) * 1979-10-29 1981-05-06 Black & Decker Inc. Outil électrique portable
GB2077398A (en) * 1979-04-26 1981-12-16 Chicago Pneumatic Tool Co Safety lever mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2616391A1 (fr) * 1976-04-14 1976-12-23
DE2839545A1 (de) * 1978-09-12 1980-03-20 Maco Meudon Sa Vorrichtung zum steuern der pressluftzufuhr eines schlagarbeitsgeraetes
GB2077398A (en) * 1979-04-26 1981-12-16 Chicago Pneumatic Tool Co Safety lever mechanism
EP0028029A1 (fr) * 1979-10-29 1981-05-06 Black & Decker Inc. Outil électrique portable

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259463A (en) * 1992-10-02 1993-11-09 Ingersoll-Rand Company Throttle lever system for a percussive, fluid-activated apparatus
US5385209A (en) * 1992-10-02 1995-01-31 Ingersoll-Rand Company Throttle lever system for a percussive, fluid-activated apparatus
WO1999054093A1 (fr) * 1998-04-22 1999-10-28 Institut National De Recherche Et De Securite Pour La Prevention Des Accidents Du Travail Et Des Maladies Professionnelles Pistolet a clouer et agrafeuse pneumatique
FR2777820A1 (fr) * 1998-04-22 1999-10-29 Inst Nat Rech Securite Pistolet a clouer et agrafeuse pneumatiques
FR2829418A1 (fr) * 2001-09-11 2003-03-14 Bernard Emilian Appareil d'entrainement en rotation par air comprime, d'un outil
GB2396577A (en) * 2002-12-23 2004-06-30 Milwaukee Electric Tool Corp Trigger assembly for a power tool
US7015409B2 (en) 2002-12-23 2006-03-21 Milwaukee Electric Tool Corporation Power tool trigger
GB2396577B (en) * 2002-12-23 2006-07-19 Milwaukee Electric Tool Corp Power tool trigger

Also Published As

Publication number Publication date
JPS613218A (ja) 1986-01-09
CH663847A5 (de) 1988-01-15

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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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT DE FR GB IT SE

17P Request for examination filed

Effective date: 19860425

17Q First examination report despatched

Effective date: 19880210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890329

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STEINER, HEINZ