EP0662371B1 - Vibration-damped handle - Google Patents

Vibration-damped handle Download PDF

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Publication number
EP0662371B1
EP0662371B1 EP94117247A EP94117247A EP0662371B1 EP 0662371 B1 EP0662371 B1 EP 0662371B1 EP 94117247 A EP94117247 A EP 94117247A EP 94117247 A EP94117247 A EP 94117247A EP 0662371 B1 EP0662371 B1 EP 0662371B1
Authority
EP
European Patent Office
Prior art keywords
vibration
plates
plate
connection
handle according
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.)
Expired - Lifetime
Application number
EP94117247A
Other languages
German (de)
French (fr)
Other versions
EP0662371A1 (en
Inventor
Franz Riedl
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.)
Wacker Werke GmbH and Co KG
Original Assignee
Wacker Werke GmbH and Co KG
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 Wacker Werke GmbH and Co KG filed Critical Wacker Werke GmbH and Co KG
Publication of EP0662371A1 publication Critical patent/EP0662371A1/en
Application granted granted Critical
Publication of EP0662371B1 publication Critical patent/EP0662371B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION 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
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006Vibration damping means

Definitions

  • the invention relates to a vibration-damped handle according to the preamble of patent claim 1.
  • Handles on the drawbars of soil compacting devices hand-guided by means of the drawbar usually have two side parts which extend symmetrically from the drawbar to the side and towards the operator, between the ends of which the actual handle part extends, which is so wide that the operator can use both with the two parts Hands can be taken side by side.
  • the actual handle part is a tube, which is connected at its ends via a coaxial rubber element to one or the other side part of the handle and at its ends with radial play in one with the respective side part rigidly connected collar engages, which limits the possibility of movement of the handle bar in the radial direction with respect to the side parts.
  • the cushioning of a handle is more effective the larger the cushioned mass and the smaller the cushioning spring force.
  • the latter must not be too small to achieve sufficient managers, so that the largest possible cushioned mass is desirable.
  • the invention has for its object a vibration-damped To design the handle so that the sprung part has as large a mass as possible that parts necessary for the design of the handle are included in the sprung mass.
  • the side parts which are essential for this are included in the sprung mass, because the damping elements are inserted between the oscillating plates forming these side parts and the drawbar close to the latter.
  • the subclaims relate to preferred embodiments of the handle according to claim 1.
  • the drawing shows an embodiment of the handle according to the invention in a perspective view.
  • the handle consists of a connection part 1 and a handle part 6 which can be swiveled relative to it.
  • the connecting part 1 has two mutually parallel elongated connecting plates 2, which in the exemplary embodiment are rigidly connected to the shaft 3a on both sides of an actuating shaft 3a, which is rotatably mounted on the end of the drawbar 3 at the end of an actuating element (not shown in more detail) for the vibration exciter of the vibration device, which is also not shown in the drawing . If it is not important to use the handle for the drive control of the compactor at the same time, the connecting plates 2 can also be connected directly to the drawbar 3.
  • the handle part 6 has two oscillating plates 8, which are rigidly connected to one another via a handle 7 and between them accommodate the connecting plates 2 at a distance from them.
  • the oscillating plates 8 and the connecting plates 2 are with each pair of plates by means of two rubber elements 4 arranged at a mutual distance at the ends of the elongated plates 2, 8 and connected to one another so as to be oscillatable.
  • connection plates 2 and the rocking plates 8 parallel to each other also results in a slim handle with good functionality with regard to the operability of the device and a beautiful appearance.

Description

Die Erfindung bezieht sich auf einen schwingungsgedämpften Handgriff gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a vibration-damped handle according to the preamble of patent claim 1.

Handgriffe an Deichseln von mittels der Deichsel handgeführten Bodenverdichtungsgeräten weisen gewöhnlich zwei sich von der Deichsel aus symmetrisch zu dieser seitwärts und zum Bedienungsmann hin erstreckende Seitenteile auf, zwischen deren deichselfernen Enden sich der eigentliche Griffteil erstreckt, der so breit ist, daß er vom Bedienenden mit beiden Händen nebeneinander gefaßt werden kann.Handles on the drawbars of soil compacting devices hand-guided by means of the drawbar usually have two side parts which extend symmetrically from the drawbar to the side and towards the operator, between the ends of which the actual handle part extends, which is so wide that the operator can use both with the two parts Hands can be taken side by side.

Bei einem bekannten Handgriff gemäß dem Oberbegriff des Patentanspruchs 1 ist der eigentliche Griffteil ein Rohr, das an seinen Enden jeweils über ein koaxiales Gummielement mit dem einen bzw. anderen Seitenteil des Handgriffs verbunden ist und an seinen Enden mit radialem Spiel in einen mit dem jeweiligen Seitenteil starr verbundenen Bund eingreift, der die Bewegungsmöglichkeit der Griffstange in radialer Richtung bezüglich der Seitenteile begrenzt.In a known handle according to the preamble of claim 1, the actual handle part is a tube, which is connected at its ends via a coaxial rubber element to one or the other side part of the handle and at its ends with radial play in one with the respective side part rigidly connected collar engages, which limits the possibility of movement of the handle bar in the radial direction with respect to the side parts.

Die Abfederung eines Griffes ist um so wirksamer, je größer die abgefederte Masse und je kleiner die abfedernde Federkraft ist. Letztere darf zur Erzielung ausreichender Führungskräfte nicht zu klein sein, so daß eine möglichst große abgefederte Masse erstrebenswert ist.The cushioning of a handle is more effective the larger the cushioned mass and the smaller the cushioning spring force. The latter must not be too small to achieve sufficient managers, so that the largest possible cushioned mass is desirable.

Der Erfindung lieg die Aufgabe zugrunde, einen schwingungsgedämpften Handgriff so zu gestalten, daß der abgefederte Teil dadurch eine möglichst große Masse hat, daß für die Gestaltung des Griffes notwendige Teile mit in die angefederte Masse einbezogen sind.The invention has for its object a vibration-damped To design the handle so that the sprung part has as large a mass as possible that parts necessary for the design of the handle are included in the sprung mass.

Die vorgenannte Aufgabe wird durch die im Patentanspruch 1 genannten Merkmale gelöst.The above object is achieved by the features mentioned in claim 1.

Bei dem erfindungsgemäßen Handgriff sind die für diesen unerlässlichen Seitenteile mit in die abgefederte Masse einbezogen, weil die Dämpfungselemente zwischen die diese Seitenteile bildenden Schwingplatten und die Deichsel nahe bei dieser eingefügt sind.In the handle according to the invention, the side parts which are essential for this are included in the sprung mass, because the damping elements are inserted between the oscillating plates forming these side parts and the drawbar close to the latter.

Die Unteransprüche haben bevorzugte Ausführungsformen des Handgriffs gemäß Patentanspruch 1 zum Gegenstand.The subclaims relate to preferred embodiments of the handle according to claim 1.

Die Zeichnung zeigt ein Ausführungsbeispiel des erfindungsgemäßen Handgriffs in perspektivischer Darstellung.The drawing shows an embodiment of the handle according to the invention in a perspective view.

Der Handgriff besteht aus einem Anschlußteil 1 und einem diesem gegenüber schwingbaren Griffteil 6.The handle consists of a connection part 1 and a handle part 6 which can be swiveled relative to it.

Der Anschlußteil 1 weist zwei zueinander parallele langgestreckte Anschlußplatten 2 auf, die beim Ausführungsbeispiel beiderseits einer an der Deichsel 3 endseitig drehbar gelagerten Betätigungswelle 3a eines nicht näher dagestellten Stellelements für den Schwingungserreger des in der Zeichnung ebenfalls nicht näher dargestellten Vibrationsgeräts starr an die Welle 3a angeschlossen sind. Wenn es nicht darauf ankommt, den Handgriff gleichzeitig auch für die antriebsmäßige Steuerung des Verdichtungsgeräts einzusetzen, können die Anschlußplatten 2 auch direkt mit der Deichsel 3 verbunden sein.The connecting part 1 has two mutually parallel elongated connecting plates 2, which in the exemplary embodiment are rigidly connected to the shaft 3a on both sides of an actuating shaft 3a, which is rotatably mounted on the end of the drawbar 3 at the end of an actuating element (not shown in more detail) for the vibration exciter of the vibration device, which is also not shown in the drawing . If it is not important to use the handle for the drive control of the compactor at the same time, the connecting plates 2 can also be connected directly to the drawbar 3.

Der Griffteil 6 weist zwei Schwingplatten 8 auf, die untereinander über einen Griffbügel 7 starr verbunden sind und zwischen sich die Anschlußplatten 2 mit Abstand von diesen aufnehmen. Die Schwingplatten 8 und die Anschlußplatten 2 sind bei jedem Plattenpaar mittels zweier im gegenseitigen Abstand bei den Enden der langgestreckten Platten 2,8 angeordneter Gummielemente 4 in Bezug aufeinander schwingbar miteinander verbunden.The handle part 6 has two oscillating plates 8, which are rigidly connected to one another via a handle 7 and between them accommodate the connecting plates 2 at a distance from them. The oscillating plates 8 and the connecting plates 2 are with each pair of plates by means of two rubber elements 4 arranged at a mutual distance at the ends of the elongated plates 2, 8 and connected to one another so as to be oscillatable.

Zwischen den Gummielementen 4 ragen von der jeweiligen Anschlußplatte 2 senkrecht sowie im gegenseitigen Abstand zwei Bolzen 5 zur benachbarten Schwingplatte 8 vor, bei der sie im unbelasteten Zustand des Griffteils 6 zentral jeweils in eine kreisrunde Ausnehmung 9 eingreifen. Der Durchmesser der Ausnehmungen 9 und die Federkraft der Federelemente 4 sind so aufeinander abgestimmt, daß beim normalen Führen des Vibrationsgeräts kein Kontakt zwischen den Bolzen 5 und der sie jeweils umgebenden Wandung der Ausnehmung 9 entsteht und die Dämpfung der Gummielemente 4 auf den Griffteil 6 bzw. den Griffbügel 7 voll wirksam ist. Erst bei größeren Auslastungen, die aus Kräften resultieren, die nur selten zum Führen des Geräts erforderlich sind, entsteht Kontakt zwischen Bolzen 5 und Wandung der Ausnehmung 9 und verhindert eine zum Führen des Geräts in diesen Ausnahmefällen unzureichende Instabilität über die Gummielemente 4.Between the rubber elements 4 protrude from the respective connection plate 2 vertically and at a distance from each other two bolts 5 to the adjacent oscillating plate 8, in which they engage centrally in a circular recess 9 in the unloaded state of the handle part 6. The diameter of the recesses 9 and the spring force of the spring elements 4 are coordinated with one another in such a way that, during normal guiding of the vibration device, there is no contact between the bolts 5 and the wall of the recess 9 surrounding them and the damping of the rubber elements 4 on the handle part 6 or the handle 7 is fully effective. Only with larger loads resulting from forces that are rarely required to guide the device does contact between the bolt 5 and the wall of the recess 9 occur and prevent inadequate instability over the rubber elements 4 in these exceptional cases.

Nachdem die die Seitenteile einer üblichen Griffgestaltung bildenden Schwingplatten 8 mit in die über die Gummielemente 4 gegen die Deichsel 3 abgefederte Masse mit einbezogen sind, kann ein optimales Dämpfungsverhalten resultierend aus einer möglichst großen Masse bei weitgehend vorgegebener Federsteifigkeit der Gummielemente 4 erzielt werden. Die Anordnung der Anschlußplatten 2 und der Schingplatten 8 parallel zueinander ergibt überdies einen schlank bauenden Griff von guter Funktionalität hinsichtlich der Führbarkeit des Geräts und schönem Aussehen.After the oscillating plates 8, which form the side parts of a conventional handle design, are also included in the mass cushioned against the drawbar 3 by the rubber elements 4, an optimal damping behavior can be achieved as a result of the largest possible mass with largely predetermined spring stiffness of the rubber elements 4. The arrangement of the connection plates 2 and the rocking plates 8 parallel to each other also results in a slim handle with good functionality with regard to the operability of the device and a beautiful appearance.

Claims (6)

  1. Vibration-damped handle which is disposed on the end of a shaft (3) of a hand-operated vibration device for the purpose of ground compacting and comprises a connection piece (1) which is attached directly to the shaft (3) or to an actuating shaft (3a), mounted thereon, of an adjusting member for the purpose of controlling the vibration exciter of the vibration device and comprises a grip piece (6) which is spring-mounted with respect to the vibration device by means of rubber elements (4) and whose possible movements with respect to the connection piece (1) are defined by means of a stop device (5, 9), characterised in that the connection piece (1) comprises two connection plates (2) disposed substantially symmetrically to the shaft (3) and on both sides thereof and the grip piece (6) is provided with two vibration plates (8) which extend at a spaced disposition from the connection plates (2) which are received between the two vibration plates (8), the said plates being rigidly connected to each other by way of a grip bracket (7) and individually attached to the respective opposite lying connection plate (2) by means of at least two rubber elements (4) disposed at a spaced disposition and that each plate pair consisting of a vibration plate (8) and a connection plate (2) comprise at least one pin (5) for the purpose of defining the mutual movements of its plates (1,8), which pin in the absence of loading on the grip piece (6) extends from one (2) of the plates centrally into an associated recess (9) in the other plate (8).
  2. Handle according to claim 1, characterised in that the connection plates (2) and the vibration plates (8) are mutually identical in their longitudinal shape and extend in parallel with each other in the absence of loading on the grip piece (6).
  3. Handle according to claim 1 or 2, characterised in that the pins (5) protrude perpendicular from their respective plate (2).
  4. Handle according to any one of the preceding claims, characterised in that the recesses (9) are circular in the respective other plate (8).
  5. Handle according to any one of the preceding claims, characterised in that each plate pair comprises at least two pins (5), which are disposed at a spaced disposition, and associated recesses (9).
  6. Handle according to any one of the preceding claims, characterised in that the rubber elements (4) are in each case in the form of vibration damping buffers.
EP94117247A 1993-12-24 1994-11-02 Vibration-damped handle Expired - Lifetime EP0662371B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9319973U DE9319973U1 (en) 1993-12-24 1993-12-24 Anti-vibration handle
DE9319973U 1993-12-24

Publications (2)

Publication Number Publication Date
EP0662371A1 EP0662371A1 (en) 1995-07-12
EP0662371B1 true EP0662371B1 (en) 1997-04-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117247A Expired - Lifetime EP0662371B1 (en) 1993-12-24 1994-11-02 Vibration-damped handle

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EP (1) EP0662371B1 (en)
DE (2) DE9319973U1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10007869C1 (en) * 2000-02-21 2001-08-23 Ammann Verdichtung Gmbh Vibrating plate
DE102004015588A1 (en) * 2004-03-01 2005-09-22 Bomag Gmbh Hand-steered, self-propelled earth-firming machine, e.g. vibrating plate, vibrating roller or tamper, has four flexible shock absorbers at corners of machine console which is attached to handle
GB0420360D0 (en) * 2004-09-13 2004-10-13 Belle Engineering Sheen Ltd Mounting apparatus and method
US20080289842A1 (en) * 2007-05-24 2008-11-27 Larry Jake Chapple Walk behind power tool vibration control handle
EP2966955A4 (en) * 2013-03-14 2016-11-23 Husqvarna Ab Dual function vibration isolation and handle swivel
DE102014006256A1 (en) * 2014-04-28 2015-10-29 Wacker Neuson Produktion GmbH & Co. KG Vibration-decoupled steering drawbar for a working device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2003918A1 (en) * 1970-01-29 1971-08-05 Zuendapp Werke Gmbh Power chain saw
DE2155878A1 (en) * 1970-11-12 1972-05-18 The Scott & Fetzer Co., Lakewood, Ohio(V.St.A.) chainsaw
DE8701722U1 (en) * 1987-02-05 1987-04-09 Weber Maschinentechnik Gmbh, 5928 Laasphe, De

Also Published As

Publication number Publication date
DE59402441D1 (en) 1997-05-22
EP0662371A1 (en) 1995-07-12
DE9319973U1 (en) 1994-03-03

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