EP0391856A3 - Pneumatic hammer - Google Patents

Pneumatic hammer Download PDF

Info

Publication number
EP0391856A3
EP0391856A3 EP19900810267 EP90810267A EP0391856A3 EP 0391856 A3 EP0391856 A3 EP 0391856A3 EP 19900810267 EP19900810267 EP 19900810267 EP 90810267 A EP90810267 A EP 90810267A EP 0391856 A3 EP0391856 A3 EP 0391856A3
Authority
EP
European Patent Office
Prior art keywords
hammer
handle
handles
link
housing
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Withdrawn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
EP19900810267
Other languages
German (de)
French (fr)
Other versions
EP0391856A2 (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 EP0391856A2 publication Critical patent/EP0391856A2/en
Publication of EP0391856A3 publication Critical patent/EP0391856A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs
    • B25D2250/381—Leaf springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

Der Hammer hat zwei quer vom Gehäuse (1) abstehende Handgriffe (11,12). Diese sind an den freien Enden einer Z-förmig gebogenen Blattfeder (10) angebracht. Die Biegungen (13,14) der Feder (10) umschlingen gehäusefeste Walzen (15,16) mit Spiel. Ein Drücker (22) ist am einen Handgriff (11) schwenkbar gelagert. Er hat eine Kulisse (27), deren Krümmungszentrum bei betätigtem Drücker (22) annähernd mit dem Schwenkzentrum (26) des zugehörigen Handgriffs (11) zusammenfällt. Die Kulisse (27) betätigt über Uebertragungsglieder (31,32) einen Ventilstift (5) des Hammers. Durch diese Ausbildung können nicht nur die Grundfrequenzen, sondern auch höherfrequente Schwingungen des Hammers wirksam von den Handgriffen (11,12) abgeschirmt werden. Auch beim Ziehen des Hammers ist diese Ausbildung mindestens teilweise wirksam. The hammer has two handles (11, 12) projecting transversely from the housing (1). These are attached to the free ends of a Z-shaped leaf spring (10). The bends (13, 14) of the spring (10) loop around the rollers (15, 16) fixed to the housing with play. A pusher (22) is pivotally mounted on a handle (11). It has a link (27) whose center of curvature coincides approximately with the pivot center (26) of the associated handle (11) when the handle (22) is actuated. The link (27) actuates a valve pin (5) of the hammer via transmission elements (31, 32). With this design, not only the basic frequencies but also higher-frequency vibrations of the hammer can be effectively shielded from the handles (11, 12). This training is also at least partially effective when pulling the hammer.

EP19900810267 1989-04-07 1990-04-03 Pneumatic hammer Withdrawn EP0391856A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH132089 1989-04-07
CH1320/89 1989-04-07

Publications (2)

Publication Number Publication Date
EP0391856A2 EP0391856A2 (en) 1990-10-10
EP0391856A3 true EP0391856A3 (en) 1992-07-08

Family

ID=4207683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900810267 Withdrawn EP0391856A3 (en) 1989-04-07 1990-04-03 Pneumatic hammer

Country Status (2)

Country Link
EP (1) EP0391856A3 (en)
AU (1) AU5307190A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134581A1 (en) * 1991-10-16 1993-04-22 Mannesmann Ag FLUID OPERATED DRUM TOOL
US5273120A (en) * 1993-05-26 1993-12-28 Ingersoll-Rand Company Power tool with a vibration absorbing handle
FR2808719B1 (en) * 2000-05-15 2002-09-20 Sullair Europ GRIPPING SYSTEM OF A PERCUSSION APPARATUS IN PARTICULAR
EP1166972A3 (en) * 2000-06-27 2004-01-21 Framatome Connectors International Power tool trigger linkage
DE102011082093A1 (en) * 2011-09-02 2013-03-07 Robert Bosch Gmbh Handle device for a hand tool
EP3766639A1 (en) * 2019-07-18 2021-01-20 Hilti Aktiengesellschaft Handheld machine tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB242218A (en) * 1924-10-29 1926-03-11 Ingersoll Rand Co Improvement in pneumatic hammer tool
US3372759A (en) * 1964-10-28 1968-03-12 Hermann Wacker And Peter Wacke Means for suppressing blows, shocks or vibrations in the operation of an apparatus such as a power driven hammer or tamper
FR2540774A1 (en) * 1983-02-14 1984-08-17 Maco Meudon Sa Control device for articulated handles on a work site tool
GB2138348A (en) * 1983-04-22 1984-10-24 Roland Andersson Vibration damping handgrip
EP0343656A2 (en) * 1988-05-27 1989-11-29 Kyowa Metal Works Co., Ltd. Vibration free handle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB242218A (en) * 1924-10-29 1926-03-11 Ingersoll Rand Co Improvement in pneumatic hammer tool
US3372759A (en) * 1964-10-28 1968-03-12 Hermann Wacker And Peter Wacke Means for suppressing blows, shocks or vibrations in the operation of an apparatus such as a power driven hammer or tamper
FR2540774A1 (en) * 1983-02-14 1984-08-17 Maco Meudon Sa Control device for articulated handles on a work site tool
GB2138348A (en) * 1983-04-22 1984-10-24 Roland Andersson Vibration damping handgrip
EP0343656A2 (en) * 1988-05-27 1989-11-29 Kyowa Metal Works Co., Ltd. Vibration free handle

Also Published As

Publication number Publication date
AU5307190A (en) 1990-10-11
EP0391856A2 (en) 1990-10-10

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