EP2047953A1 - Handle and power tool - Google Patents
Handle and power tool Download PDFInfo
- Publication number
- EP2047953A1 EP2047953A1 EP08166209A EP08166209A EP2047953A1 EP 2047953 A1 EP2047953 A1 EP 2047953A1 EP 08166209 A EP08166209 A EP 08166209A EP 08166209 A EP08166209 A EP 08166209A EP 2047953 A1 EP2047953 A1 EP 2047953A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handle
- securing
- handle according
- end wall
- section
- 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
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Classifications
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- 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
- B25F5/006—Vibration damping means
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- 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
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- 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
- B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
- B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
Definitions
- the invention relates to a handle, in particular an auxiliary handle, for a hand tool according to the preamble of claim 1 and a hand tool according to claim 12.
- the handles comprise a lower handle portion, on the front side, an elastic, vibration damping element is fixed, on which in turn a fastening portion, comprising an externally threaded portion for fixing the handle to a hand tool, is provided.
- the invention is based on the idea of proposing a handle which can be produced as simply as possible, in which the risk of injury to the operator is minimized even when the elastic element is detached from the grip section.
- the invention is based on the idea to secure the attachment portion by means of securing means passing through the elastic element on the handle portion.
- securing means prevents the handle portion, in the event that the elastic, vibration-damping element should be detached from the handle portion and / or the attachment portion does not tear off completely from the handle, but that the handle as a unit remains, whereby the risk of injury to the operator is minimized when in-use hand tool.
- the partial embedding of the securing means in the elastic element is particularly advantageous because the securing means are not visible from the outside by the operator and do not hinder the operation of the power tool.
- the securing means should be designed such that are not or only minimally transmitted to the handle portion by these vibrations of the power tool and thus the attachment portion.
- the axial extent of the securing means should be chosen so that this maximum allowable relative movement allow the handle portion to the mounting portion without hindrance.
- the means are designed as a screw connection.
- the means may comprise a clamping ring, by means of which the handle on the machine tool can be clamped.
- the elastic, vibration-damping element there are also different implementation possibilities. Particularly preferred is an embodiment in which the rigid securing element is guided with radial clearance through the frontal wall of the handle portion, so as to avoid a vibration transmission on the handle portion largely.
- the element consists of a foamed plastic.
- the elastic, vibration-damping element made of a thermoplastic elastomer (TPE) is formed.
- TPE thermoplastic elastomer
- the securing means comprise a rigid securing element.
- This is fixed to the attachment portion and extends at least substantially in the axial direction through the elastic element into the grip portion.
- the securing element preferably passes through an end wall of the grip section facing the elastic element, at least in sections, and engages behind it, so that complete tearing off of the grip section from the fastening section is avoided.
- this is the end wall of the handle portion engaging behind portion of the fuse element not directly on the back of the end wall, but is arranged in normal operation with axial distance to the end wall. In this way it is ensured that a relative movement between the handle portion and the mounting portion due to the provision of the elastic, shrinkage-damping element is possible.
- An air gap does not necessarily have to be provided between the section of the securing element engaging behind the end wall and the end wall.
- the gap can also be filled, for example, with an elastic, vibration-damping material.
- the securing element is formed rivet-like.
- the securing element comprises a rivet shank and an end-side rivet head projecting into the grip section, wherein the rivet head engages behind the end wall, preferably with axial play.
- the rivet shank is preferably guided with a radial clearance through the front-side handle portion outer wall.
- the rivet shank is formed thread-free and fixed, for example, by welding to the attachment portion, preferably on the means for, in particular releasably, fixing the attachment portion to the power tool.
- these means are designed as a screw, wherein it is advantageous if the screw protrudes with its screw head into the elastic, vibration-damping element.
- a rigid securing element instead of the formation of the rigid securing element as a rivet, it is possible to form a rigid securing element as a screw with an at least partially having an external thread screw shank, wherein the end of the screw shaft projecting into the handle portion screw head is provided, which preferably the frontal wall of the handle portion interspersed with axial play.
- the fixing of the screw on the fastening portion preferably on the means for fixing the handle to the hand tool, is preferably carried out by screwing, wherein an embodiment is preferred in which suitable means, such as adhesive, are provided for preventing unintentional release of the screw. It is particularly preferred if the screw shaft passes through the end wall of the handle portion with radial clearance.
- the rigid securing element is designed as a radially expandable grooved pin, wherein the head of the grooved pin prevents detachment of the grip portion of the attachment portion.
- the head of a locking element designed as a screw is conically shaped, in particular because the widest point of the rigid securing element in this embodiment has the maximum distance to the mounting portion.
- the securing element is not designed as a classic, one-piece screw, but consists of at least two parts, namely a shaft member and a fixed thereto, the end wall of the handle portion engaging behind the head part.
- This is preferably formed trough or rock-shaped and open towards the attachment portion.
- this head part is formed of plastic and preferably pressed onto the shaft. The head part prevents the securing element from slipping through the front opening in the grip section, which is penetrated by the shaft component.
- securing means are designed to be flexible in order to allow a relative movement between the fastening portion and the handle portion in a simple manner.
- securing means comprise an annular cross-sectionally preferably cylindrical cage.
- This cage is preferably formed from wires or suitable plastic cords.
- the cage is fixed by encapsulation on the attachment portion, in particular a retaining plate of the attachment portion.
- the cage is additionally or alternatively encapsulated by the elastic member and passes through an end opening of the handle portion, wherein the axial end is preferably arranged at a distance from the end wall of the handle portion, so that a relative movement between the handle portion and securing means is possible.
- the cage is preferably thickened or connected to a rear wall of the handle portion engaging behind component.
- the securing means comprise at least one safety rope and / or a securing band, which is fixed at one end to the attachment portion and passes through the elastic element.
- the safety rope or the securing band is encapsulated by the elastic element.
- the length of the safety rope or the securing band is to be chosen so that a relative movement between the handle portion and the attachment portion is possible.
- the safety rope or the securing band is preferably thickened formed at its end received in the handle portion or connected to a rear handle forming member.
- At least two safety ropes and / or safety bands which are arranged at a distance from the longitudinal central axis of the handle.
- an embodiment with only a safety rope or securing band can be realized, which is preferably arranged centrally with respect to the longitudinal center axis of the handle.
- the fixing of the at least one securing band or securing cable can be done by gluing, welding, etc. with the attachment portion, in particular with the means for fixing the attachment portion to the power tool.
- the invention leads to a hand tool with a previously described handle.
- the handle may be a main handle of the hand tool machine, which is permanently arranged on the hand tool machine.
- the handle is designed as an additional handle, which is releasably fixed by means of the means for fixing to the power tool when needed on the power tool.
- the means for fixing the handle on the hand tool are designed as a screw.
- the means may comprise a known clamping ring with clamping screw.
- Fig. 1 is a detail of a handle 1 for a hand tool, not shown, in particular designed as an electric hand tool machine, such as a drill or an angle grinder shown.
- the Handle 1 comprises a handle portion 2, which is only partially shown and which serves to hold the handle 1.
- the grip section 2 has a peripheral wall 3 and an end wall 4 formed integrally therewith and facing the handheld power tool. With the end wall is an elastic, vibration damping element 5, for example, connected by gluing or molding.
- the elastic element 5 in turn is connected to a fastening section 6, which comprises a retaining plate 7 and means 8 for fixing the handle 1 to the machine tool, not shown.
- the means 8 are defined by encapsulation on the support plate 7 and project back into the element 5 into it.
- securing means 9 are provided. These exist in Fig. 1 from a rigid securing element 10, which is in Fig. 1 is designed as a rivet.
- the fuse element 10 includes in the embodiment according to Fig. 1 a rivet shank 11 which is welded to a front side 12 of the means 8 facing the grip portion 2.
- the rivet shank 11 interspersed with radial play an opening 13 in the element 5 and with radial play an aligned with this opening 14 in the end wall 4 of the handle portion 2.
- the end wall 4 engages behind with axial distance, that is, has a larger diameter than the opening 14.
- the diameter of the rivet head 16 is less than that of a head portion of the means 8 Fig. 1 can be seen further, the diameter of the rivet shank 11 is substantially smaller than the diameter of an externally threaded portion 17 of the means eighth
- the securing means 9 are designed as a grooved pin 18 with a conical head 19, wherein the head 19 is designed in such a way that slippage of the grooved pin 18 through the opening 14 in the end wall 4 is avoided.
- the notched pin 18 passes through both the opening 13 in the element 5 and the opening 14 with radial clearance.
- the notched pin 18 is fixed to the means 8 by gluing or welding.
- an embodiment of the grooved pin 18 with an external thread is conceivable, in which case the grooved pin 18 is preferably screwed to an internal thread of the means 8 or of the attachment section 6.
- Fig. 3 another embodiment of a handle 1 is shown.
- the securing means 9 are formed in two parts.
- the securing means 9 comprise a shaft component 20 made of metal, which is fixed, for example, by gluing or welding to the means 8 of the fastening portion 6.
- an embodiment of the shaft component 20 with external thread can be realized.
- the shaft member 20 passes through an opening 13 in the element 5 and an aligned with this opening 14 in the end wall 4 of the handle portion each with radial play.
- a rock or trough-shaped head part 21 is fixed. This is held in a form-fitting manner in a circumferential groove 22 of the shaft component 20.
- the head part 20 has the function of a barb and prevents slippage of the securing means 9 through the opening 14th
- the securing means 9 comprise a wire-formed cylindrical cage 3 which is over-molded by the material forming the element 5.
- the cage 23 is fixed, for example by encapsulation in the retaining plate 7 of the attachment portion 6. It can be seen that the flexible cage 23 passes through the end wall 4 of the handle portion 2, wherein on the cage 23 with axial distance to the back 15 of the end wall 4, an annular member 24 is fixed, which prevents slipping out of the cage 23 from the handle portion 2.
- the securing means 9 comprise two safety ropes 25, which are arranged at radial distance to a longitudinal central axis L of the handle 1.
- the safety ropes 25 are formed thickened at the fixed in the attachment portion 6 end.
- the fixing in the attachment section 6 takes place by molding the securing cables 25 with the plastic forming the retaining plate 7.
- the length of the safety cables 25 is dimensioned so that a relative movement between the handle portion 2 and the attachment portion 6 is possible.
- the safety ropes 25 pass through openings 14 in the end wall 4 of the handle portion 2 and protrude into the handle portion 2 and into a cavity 26 provided therein.
- the located in the cavity 26 ends 27th are thickened to prevent slipping out of the openings 14.
- the securing means 9 comprise a securing cable 25, which is arranged essentially centrally with respect to the longitudinal central axis L of the handle 1 and is braided from steel wires.
- the safety rope 25 is welded to the front end 8 formed with screws as a screw.
- the safety cable 25 passes through an opening 13 in the element 5 and an opening 14 aligned therewith in the end wall 4 of the handle section 2.
- a metal pin 28 is provided which prevents the safety cable 25 of the opening 14 from slipping out.
- the length of the safety rope 25 is dimensioned so that a relative movement between the handle portion 2 and the attachment portion 6 is possible. A complete tearing of the handle portion 2 from the mounting portion 6 is securely prevented by the safety wire 25 with metal pin 28.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
Abstract
Description
Die Erfindung betrifft einen Handgriff, insbesondere einen Zusatzhandgriff, für eine Handwerkzeugmaschine gemäß dem Oberbegriff des Anspruchs 1 sowie eine Handwerkzeugmaschine gemäß Anspruch 12.The invention relates to a handle, in particular an auxiliary handle, for a hand tool according to the preamble of claim 1 and a hand tool according to
Aus der
Der Erfindung liegt der Gedanke zugrunde, einen möglichst einfach fertigbaren Handgriff vorzuschlagen, bei dem die Gefahr einer Verletzung der Bedienperson selbst bei einem Ablösen des elastischen Elementes von dem Griffabschnitt minimiert ist.The invention is based on the idea of proposing a handle which can be produced as simply as possible, in which the risk of injury to the operator is minimized even when the elastic element is detached from the grip section.
Diese Aufgabe wird hinsichtlich des Handgriffs mit den Merkmalen des Anspruchs 1 und hinsichtlich der Handwerkzeugmaschine mit den Merkmalen des Anspruchs 12 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben. In den Rahmen der Erfindung fallen auch sämtliche Kombinationen aus zumindest zwei von in der Beschreibung, den Ansprüchen und/oder den Figuren offenbarten Merkmalen.This object is achieved in terms of the handle with the features of claim 1 and in terms of the power tool with the features of
Der Erfindung liegt der Gedanke zugrunde, den Befestigungsabschnitt mit Hilfe von das elastische Element durchsetzenden Sicherungsmitteln am Griffabschnitt zu sichern. Durch das Vorsehen derartiger Sicherungsmittel wird verhindert, dass der Griffabschnitt, für den Fall, dass sich das elastische, schwingungsdämpfende Element von dem Griffabschnitt und/oder dem Befestigungsabschnitt ablösen sollte, nicht vollständig von dem Handgriff abreißt bzw. ablöst, sondern dass der Handgriff als Einheit bestehen bleibt, wodurch die Gefahr einer Verletzung der Bedienperson bei im Betrieb befindlicher Handwerkzeugmaschine minimiert wird. Die abschnittsweise Einbettung der Sicherungsmittel in das elastische Element ist insbesondere deshalb von Vorteil, da die Sicherungsmittel von außen durch die Bedienperson nicht sichtbar sind und die Bedienung der Handwerkzeugmaschine nicht behindern. Die Sicherungsmittel sollten derart ausgelegt sein, dass durch diese Schwingungen der Handwerkzeugmaschine und damit des Befestigungsabschnittes nicht oder nur minimal auf den Griffabschnitt übertragen werden. Ferner sollte die Axialerstreckung der Sicherungsmittel so gewählt werden, dass diese eine maximal zulässige Relativbewegung des Griffabschnittes zu dem Befestigungsabschnitt behinderungsfrei zulassen.The invention is based on the idea to secure the attachment portion by means of securing means passing through the elastic element on the handle portion. By providing such securing means prevents the handle portion, in the event that the elastic, vibration-damping element should be detached from the handle portion and / or the attachment portion does not tear off completely from the handle, but that the handle as a unit remains, whereby the risk of injury to the operator is minimized when in-use hand tool. The partial embedding of the securing means in the elastic element is particularly advantageous because the securing means are not visible from the outside by the operator and do not hinder the operation of the power tool. The securing means should be designed such that are not or only minimally transmitted to the handle portion by these vibrations of the power tool and thus the attachment portion. Furthermore, the axial extent of the securing means should be chosen so that this maximum allowable relative movement allow the handle portion to the mounting portion without hindrance.
Im Hinblick auf die Ausbildung der Mittel zum Festlegen des Befestigungsabschnitts an der Werkzeugmaschine gibt es unterschiedliche Realisierungsmöglichkeiten. Beispielsweise ist es denkbar, dass die Mittel als Schraubverbindung ausgebildet sind. Zusätzlich oder alternativ können die Mittel einen Klemmring umfassen, mit Hilfe dessen der Handgriff an der Werkzeugmaschine festklemmbar ist. In Bezug auf die Ausbildung des elastischen, schwingungsdämpfenden Elementes gibt es ebenfalls unterschiedliche Realisierungsmöglichkeiten. Besonders bevorzugt ist eine Ausführungsform, bei der das starre Sicherungselement mit Radialspiel durch die stirnseitige Wand des Griffabschnittes geführt ist, um somit eine Schwingungsübertragung auf dem Griffabschnitt weitgehend zu vermeiden. Bevorzugt ist eine Ausführungsform, bei der das Element aus einem aufgeschäumten Kunststoff besteht. Besonders bevorzugt ist das elastische, schwingungsdämpfende Element aus einem thermoplastischen Elastomer (TPE) ausgebildet.With regard to the design of the means for fixing the attachment portion to the machine tool, there are different implementation possibilities. For example, it is conceivable that the means are designed as a screw connection. Additionally or alternatively, the means may comprise a clamping ring, by means of which the handle on the machine tool can be clamped. With regard to the design of the elastic, vibration-damping element, there are also different implementation possibilities. Particularly preferred is an embodiment in which the rigid securing element is guided with radial clearance through the frontal wall of the handle portion, so as to avoid a vibration transmission on the handle portion largely. Preferred is an embodiment in which the element consists of a foamed plastic. Particularly preferably, the elastic, vibration-damping element made of a thermoplastic elastomer (TPE) is formed.
Von besonderem Vorteil ist eine Ausführungsform, bei der die Sicherungsmittel ein starres Sicherungselement umfassen. Dieses ist an dem Befestigungsabschnitt festgelegt und erstreckt sich zumindest im Wesentlichen in axialer Richtung durch das elastische Element bis in den Griffabschnitt hinein. Bevorzugt durchsetzt das Sicherungselement dabei eine dem elastischen Element zugewandte Stirnwand des Griffabschnittes zumindest abschnittsweise und hintergreift diese, so dass ein vollständiges Abreißen des Griffabschnittes von dem Befestigungsabschnitt vermieden wird. Bevorzugt liegt dabei der die Stirnwand des Griffabschnittes hintergreifende Abschnitt des Sicherungselementes nicht unmittelbar an der Rückseite der Stirnwand an, sondern ist im normalen Betrieb mit Axialabstand zu der Stirnwand angeordnet. Auf diese Weise wird sichergestellt, dass eine Relativbewegung zwischen dem Griffabschnitt und dem Befestigungsabschnitt aufgrund des Vorsehens des elastischen, schwindungsdämpfenden Elementes möglich ist. Unter dem zuvor beschriebenen Durchsetzen der Stirnwand wird nicht notwendigerweise ein vollständiges Durchsetzen der Stirnwand verstanden. Es ist auch eine Ausführungsform realisierbar, bei der die Stirnwand nur über einen (Axial-) Abschnitt ihrer Dickenerstreckung von dem Sicherungselement durchsetzt wird und der die Stirnwand hintergreifende Abschnitt des Sicherungselementes in einer Kavität der Stirnwand aufgenommen ist. Bevorzugt ist auch bei dieser Ausführungsform ein Axialabstand zwischen dem die Stirnwand hintergreifenden Abschnitt und der Innenseite der Kavität realisiert, um eine Relativbewegung zwischen dem Sicherungselement und dem Griffabschnitt zuzulassen.Of particular advantage is an embodiment in which the securing means comprise a rigid securing element. This is fixed to the attachment portion and extends at least substantially in the axial direction through the elastic element into the grip portion. In this case, the securing element preferably passes through an end wall of the grip section facing the elastic element, at least in sections, and engages behind it, so that complete tearing off of the grip section from the fastening section is avoided. Preferably, this is the end wall of the handle portion engaging behind portion of the fuse element not directly on the back of the end wall, but is arranged in normal operation with axial distance to the end wall. In this way it is ensured that a relative movement between the handle portion and the mounting portion due to the provision of the elastic, shrinkage-damping element is possible. Under the above-described enforcement of the end wall is not necessarily understood a complete enforcement of the end wall. It is also an embodiment feasible, in which the end wall is penetrated only over an (axial) portion of its thickness extension of the securing element and the end wall engaging behind portion of the securing element is received in a cavity of the end wall. Preferably, in this embodiment, an axial distance between the end wall engaging behind the section and the inside of the cavity is realized to allow a relative movement between the securing element and the handle portion.
Zwischen dem die Stirnwand hintergreifenden Abschnitt des Sicherungselementes und der Stirnwand muss nicht notwendigerweise ein Luftspalt vorgesehen werden. Der Spalt kann beispielsweise auch mit einem elastischen, schwingungsdämpfenden Material gefüllt sein.An air gap does not necessarily have to be provided between the section of the securing element engaging behind the end wall and the end wall. The gap can also be filled, for example, with an elastic, vibration-damping material.
Im Hinblick auf die Ausbildung des starren Elementes gibt es unterschiedliche Möglichkeiten. Besonders bevorzugt ist eine Ausführungsform, bei der das Sicherungselement nietartig ausgebildet ist. Das Sicherungselement umfasst bei dieser Ausführungsform einen Nietschaft und einen endseitigen, in den Griffabschnitt hineinragenden Nietkopf, wobei der Nietkopf die Stirnwand, vorzugsweise mit Axialspiel hintergreift. Um eine Schwingungsübertragung auf den Griffabschnitt zu vermeiden, ist der Nietschaft vorzugsweise mit einem Radialspiel durch die stirnseitige Griffabschnittsaußenwand geführt. Besonders bevorzugt ist eine Ausführungsform, bei der der Nietschaft gewindefrei ausgebildet und beispielsweise durch Verschweißen am Befestigungsabschnitt, vorzugsweise an den Mitteln, zum, insbesondere lösbaren, Festlegen des Befestigungsabschnittes an der Handwerkzeugmaschine festgelegt ist. Besonders bevorzugt ist eine Ausführungsform, bei der diese Mittel als Schraube ausgebildet sind, wobei es vorteilhaft ist, wenn die Schraube mit ihrem Schraubenkopf in das elastische, schwingungsdämpfende Element hineinragt. Durch die beschriebene Ausführungsform wird eine Lösung erhalten, die einfach fertigbar und montierbar ist.With regard to the formation of the rigid element, there are different possibilities. Particularly preferred is an embodiment in which the securing element is formed rivet-like. In this embodiment, the securing element comprises a rivet shank and an end-side rivet head projecting into the grip section, wherein the rivet head engages behind the end wall, preferably with axial play. In order to avoid a vibration transmission to the handle portion, the rivet shank is preferably guided with a radial clearance through the front-side handle portion outer wall. Particularly preferred is an embodiment in which the rivet shank is formed thread-free and fixed, for example, by welding to the attachment portion, preferably on the means for, in particular releasably, fixing the attachment portion to the power tool. Particularly preferred is an embodiment in which these means are designed as a screw, wherein it is advantageous if the screw protrudes with its screw head into the elastic, vibration-damping element. By the described embodiment, a solution is obtained which is easy to manufacture and assemble.
Anstelle der Ausbildung des starren Sicherungselementes als Niet, ist es möglich, dass starre Sicherungselement als Schraube mit einem zumindest abschnittsweise ein Außengewinde aufweisenden Schraubenschaft auszubilden, wobei endseitig an den Schraubenschaft ein in den Griffabschnitt hineinragender Schraubenkopf vorgesehen ist, der die stirnseitige Wand des Griffabschnittes, vorzugsweise mit Axialspiel durchsetzt. Das Festlegen der Schraube am Befestigungsabschnitt, vorzugsweise an den Mitteln zum Festlegen des Handgriffs an der Handwerkzeugmaschine, erfolgt bevorzugt durch Verschrauben, wobei eine Ausführungsform bevorzugt ist, bei der geeignete Mittel, beispielsweise Klebstoff, zum Verhindern eines unbeabsichtigten Lösens der Schraubverbindung vorgesehen sind. Besonders bevorzugt ist es, wenn der Schraubenschaft die stirnseitige Wand des Griffabschnittes mit Radialspiel durchsetzt.Instead of the formation of the rigid securing element as a rivet, it is possible to form a rigid securing element as a screw with an at least partially having an external thread screw shank, wherein the end of the screw shaft projecting into the handle portion screw head is provided, which preferably the frontal wall of the handle portion interspersed with axial play. The fixing of the screw on the fastening portion, preferably on the means for fixing the handle to the hand tool, is preferably carried out by screwing, wherein an embodiment is preferred in which suitable means, such as adhesive, are provided for preventing unintentional release of the screw. It is particularly preferred if the screw shaft passes through the end wall of the handle portion with radial clearance.
Besonders bevorzugt ist eine Ausführungsform, bei der das starre Sicherungselement als radial aufweitbarer Kerbstift ausgebildet ist, wobei der Kopf des Kerbstiftes ein Ablösen des Griffabschnittes von dem Befestigungsabschnitt verhindert. Besonders bevorzugt ist eine Ausführungsform, bei der der Kopf eines als Schraube ausgebildeten Sicherungselementes konisch ausgeformt ist, insbesondere deshalb, da die breiteste Stelle des starren Sicherungselementes bei dieser Ausführungsform den maximalen Abstand zum Befestigungsabschnitt aufweist.Particularly preferred is an embodiment in which the rigid securing element is designed as a radially expandable grooved pin, wherein the head of the grooved pin prevents detachment of the grip portion of the attachment portion. Particularly preferred is an embodiment in which the head of a locking element designed as a screw is conically shaped, in particular because the widest point of the rigid securing element in this embodiment has the maximum distance to the mounting portion.
Gemäß einer alternativen Ausführungsform ist das Sicherungselement nicht als klassische, einteilige Schraube ausgebildet, sondern besteht aus mindestens zwei Teilen, nämlich einem Schaftbauteil und einem daran festgelegten, die Stirnwand des Griffabschnittes hintergreifenden Kopfteil. Dieses ist bevorzugt wannen- bzw. rockförmig ausgebildet und hin zum Befestigungsabschnitt geöffnet. Es ist eine Ausführungsform realisierbar, bei der dieses Kopfteil aus Kunststoff ausgebildet und bevorzugt auf den Schaft aufgepresst ist. Das Kopfteil verhindert ein Durchrutschen des Sicherungselementes durch die von dem Schaftbauteil durchsetzte, stirnseitige Öffnung im Griffabschnitt.According to an alternative embodiment, the securing element is not designed as a classic, one-piece screw, but consists of at least two parts, namely a shaft member and a fixed thereto, the end wall of the handle portion engaging behind the head part. This is preferably formed trough or rock-shaped and open towards the attachment portion. It is an embodiment feasible, in which this head part is formed of plastic and preferably pressed onto the shaft. The head part prevents the securing element from slipping through the front opening in the grip section, which is penetrated by the shaft component.
Von besonderem Vorteil ist eine Ausführung, bei der die Sicherungsmittel flexibel ausgebildet sind, um eine Relativbewegung zwischen dem Befestigungsabschnitt und dem Griffabschnitt auf einfache Weise zu ermöglichen-. Dies ist beispielsweise durch eine Ausführungsform realisierbar, bei der Sicherungsmittel einen im Querschnitt ringförmigen, vorzugsweise zylinderförmigen Käfig umfassen. Dieser Käfig ist bevorzugt aus Drähten oder geeigneten Kunststoffschnüren gebildet. Besonders bevorzugt ist eine Ausführungsform, bei der der Käfig durch Umspritzen an dem Befestigungsabschnitt, insbesondere einer Halteplatte des Befestigungsabschnittes festgelegt ist. Bevorzugt ist der Käfig zusätzlich oder alternativ auch von dem elastischen Element umspritzt und durchsetzt eine stirnseitige Öffnung des Griffabschnittes, wobei das axiale Ende bevorzugt mit Abstand zur Stirnwand des Griffabschnittes angeordnet ist, so dass eine Relativbewegung zwischen Griffabschnitt und Sicherungsmitteln möglich ist. An seinem axialen Ende ist der Käfig vorzugsweise verdickt ausgebildet oder mit einem die Stirnwand des Griffabschnittes hintergreifenden Bauteil verbunden.Of particular advantage is an embodiment in which the securing means are designed to be flexible in order to allow a relative movement between the fastening portion and the handle portion in a simple manner. This can be realized, for example, by an embodiment in which securing means comprise an annular cross-sectionally preferably cylindrical cage. This cage is preferably formed from wires or suitable plastic cords. Particularly preferred is an embodiment in which the cage is fixed by encapsulation on the attachment portion, in particular a retaining plate of the attachment portion. Preferably, the cage is additionally or alternatively encapsulated by the elastic member and passes through an end opening of the handle portion, wherein the axial end is preferably arranged at a distance from the end wall of the handle portion, so that a relative movement between the handle portion and securing means is possible. At its axial end of the cage is preferably thickened or connected to a rear wall of the handle portion engaging behind component.
Gemäß einer weiteren alternativen Ausführungsform ist vorgesehen, dass die Sicherungsmittel mindestens ein Sicherungsseil und/oder ein Sicherungsband umfassen, das einenends am Befestigungsabschnitt festgelegt ist und das elastische Element durchsetzt. Bevorzugt ist das Sicherungsseil bzw. das Sicherungsband von dem elastischen Element umspritzt. Die Länge des Sicherungsseils bzw. des Sicherungsbandes ist so zu wählen, dass eine Relativbewegung zwischen dem Griffabschnitt und dem Befestigungsabschnitt möglich ist. Um ein Durchrutschen durch die von dem Sicherungsseil oder Sicherungsband durchsetzten Öffnung in der Stirnseite des Griffabschnittes zu verhindern, ist das Sicherungsseil bzw. das Sicherungsband an seinem im Griffabschnitt aufgenommenen Ende bevorzugt verdickt ausgebildet oder mit einem einen Hintergriff bildenden Bauteil verbunden.According to a further alternative embodiment it is provided that the securing means comprise at least one safety rope and / or a securing band, which is fixed at one end to the attachment portion and passes through the elastic element. Preferably, the safety rope or the securing band is encapsulated by the elastic element. The length of the safety rope or the securing band is to be chosen so that a relative movement between the handle portion and the attachment portion is possible. In order to prevent slippage through the penetrated by the safety rope or securing band opening in the end face of the handle portion, the safety rope or the securing band is preferably thickened formed at its end received in the handle portion or connected to a rear handle forming member.
Es liegt im Rahmen der Weiterbildung der Erfindung, mindestens zwei Sicherungsseile und/oder Sicherungsbände vorzusehen, die mit Abstand zur Längsmittelachse des Handgriffes angeordnet sind. Alternativ ist eine Ausführungsform mit nur einem Sicherungsseil oder Sicherungsband realisierbar, welches bevorzugt zentrisch in Bezug auf die Längsmittelachse des Handgriffs angeordnet ist. Das Festlegen des mindestens einen Sicherungsbandes oder Sicherungsseils kann durch Verkleben, Verschweißen, etc. mit dem Befestigungsabschnitt, insbesondere mit den Mitteln zum Festlegen des Befestigungsabschnittes an der Handwerkzeugmaschine erfolgen.It is within the scope of the development of the invention to provide at least two safety ropes and / or safety bands, which are arranged at a distance from the longitudinal central axis of the handle. Alternatively, an embodiment with only a safety rope or securing band can be realized, which is preferably arranged centrally with respect to the longitudinal center axis of the handle. The fixing of the at least one securing band or securing cable can be done by gluing, welding, etc. with the attachment portion, in particular with the means for fixing the attachment portion to the power tool.
Ferner führt die Erfindung auf eine Handwerkzeugmaschine mit einem zuvor beschriebenen Handgriff. Dabei kann es sich bei dem Handgriff um einen Haupt-Handgriff der Handwerkzeugmaschine, der dauerhaft an der Handwerkzeugmaschine angeordnet ist, handeln. Alternativ ist der Handgriff als Zusatzhandgriff ausgebildet, der mit Hilfe der Mittel zum Festlegen an der Handwerkzeugmaschine lösbar bei Bedarf an der Handwerkzeugmaschine festlegbar ist.Furthermore, the invention leads to a hand tool with a previously described handle. In this case, the handle may be a main handle of the hand tool machine, which is permanently arranged on the hand tool machine. Alternatively, the handle is designed as an additional handle, which is releasably fixed by means of the means for fixing to the power tool when needed on the power tool.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnungen. Diese zeigen in:
- Fig. 1:
- in einer schematischen Darstellung einen Teilabschnitt eines Handgriffes mit nietförmigen Sicherungselement,
- Fig. 2:
- in einer schematischen Darstellung einen Teilabschnitt eines Handgriffes mit einem als Kerbstift ausgebildeten Sicherungselement,
- Fig. 3:
- in einer schematischen Darstellung einen Teilabschnitt eines Handgriffes, bei der das Sicherungselement zweiteilig ausgebildet ist,
- Fig. 4:
- in einer schematischen Ansicht einen Teilabschnitt eines Handgriffes, bei der die Sicherungsmittel einen Drahtkäfig umfassen,
- Fig. 5:
- in einer schematischen Darstellung einen Teilabschnitt eines Handgriffes mit zwei seilförmigen Sicherungsmitteln und
- Fig. 6:
- in einer schematischen Darstellung einen Teilabschnitt eines Handgriffes mit einem zentrischen Sicherungsseil.
- Fig. 1:
- in a schematic representation of a section of a handle with rivet-shaped securing element,
- Fig. 2:
- 1 is a schematic representation of a section of a handle with a securing element designed as a grooved pin;
- 3:
- 1 is a schematic representation of a partial section of a handle, in which the securing element is in two parts,
- 4:
- 3 is a schematic view of a section of a handle in which the securing means comprise a wire cage;
- Fig. 5:
- in a schematic representation of a portion of a handle with two rope-shaped securing means and
- Fig. 6:
- in a schematic representation of a portion of a handle with a central safety rope.
In den Figuren sind gleiche Bauteile und Bauteile mit der gleichen Figur mit den gleichen Bezugszeichen gekennzeichnet.In the figures, the same components and components with the same figure with the same reference numerals.
Bei den im Folgenden beschriebenen Ausführungsbeispielen sind die Mittel zum Festlegen des Handgriffs an der Handwerkzeugmaschine als Schraube ausgebildet. Alternativ sind anders ausgebildete Mittel realisierbar. Beispielsweise können die Mittel einen an sich bekannten Klemmring mit Klemmschraube umfassen.In the embodiments described below, the means for fixing the handle on the hand tool are designed as a screw. Alternatively, differently designed funds can be realized. For example, the means may comprise a known clamping ring with clamping screw.
In
Um zu Verhindern, dass der Griffabschnitt 2 vollständig von dem Befestigungsabschnitt 6 abreißt, sind Sicherungsmittel 9 vorgesehen. Diese bestehen in
Im Folgenden werden die Ausführungsbeispiele gemäß den
Bei dem in
In
Bei dem Ausführungsbeispiel gemäß
Bei dem Ausführungsbeispiel gemäß
Bei dem Ausführungsbeispiel gemäß
Claims (12)
dadurch gekennzeichnet,
dass der Befestigungsabschnitt (6) über das elastische Element (5) durchsetzende Sicherungsmittel (9) an dem Griffabschnitt (2) unverlierbar gesichert ist.Handle, in particular additional handle, for a hand tool machine, having a grip section (2) which is connected via an elastic, vibration-damping element (5) to a fastening element (6) having a means (8) for fixing to the hand-held power tool,
characterized,
in that the fastening section (6) is captively secured to the grip section (2) by securing means (9) passing through the elastic element (5).
dadurch gekennzeichnet,
dass die Sicherungsmittel (9) ein starres, an dem Befestigungsabschnitt (6) festgelegtes Sicherungselement (10) umfassen, das eine Stirnwand (4) des Griffabschnittes (2) in zumindest näherungsweise axialer Richtung mit Radialspiel durchsetzt und die Stirnwand (12), vorzugsweise mit Axialabstand, insbesondere quer zur seiner Längserstreckung, hintergreift.Handle according to claim 1,
characterized,
in that the securing means (9) comprise a rigid securing element (10) fixed to the fastening section (6), which passes through an end wall (4) of the grip section (2) in at least approximately axial direction with radial play and the end wall (12), preferably with Axial distance, in particular transversely to its longitudinal extent, engages behind.
dadurch gekennzeichnet,
dass das starre Sicherungselement (10) als Niet mit einem Nietschaft (11) und einem endseitigen, in den Griffabschnitt (2) hineinragenden Nietkopf (16) ausgebildet ist, wobei der Nietschaft (11) durch Verschweißen an dem Befestigungsabschnitt (6), vorzugsweise an den Mitteln (8) zum Festlegen des Handgriffes (1) an der Handwerkzeugmaschine, festgelegt ist.Handle according to claim 2,
characterized,
in that the rigid securing element (10) is designed as a rivet with a rivet shank (11) and a rivet head (16) projecting into the grip section (2), the rivet shank (11) being welded to the fastening section (6), preferably on the means (8) for fixing the handle (1) on the hand tool, is set.
dadurch gekennzeichnet,
dass das starre Sicherungselement (10) als Schraube mit einem zumindest abschnittsweise ein Außengewinde (17) aufweisenden Schraubenschaft und einem endseitigen, in den Griffabschnitt (2) hineinragenden Schraubenkopf ausgebildet ist, wobei der Schraubenschaft durch Verschrauben an dem Befestigungsabschnitt (6), vorzugsweise an den Mitteln (8) zum Festlegen des Handgriffes (1) an der Handwerkzeugmaschine, festgelegt ist.Handle according to claim 2,
characterized,
in that the rigid securing element (10) is designed as a screw with a screw shank having an external thread (17) at least in sections and a screw head protruding into the grip section (2), wherein the screw shank is screwed to the fastening section (6), preferably to the Means (8) for fixing the handle (1) on the hand tool, is set.
dadurch gekennzeichnet,
dass das Sicherungselement (10) als Kerbstift (18) ausgebildet ist und/oder einen sich zum Befestigungsabschnitt (6) hin konusförmig verjüngend Kopf (19) aufweist.Handle according to one of claims 2 to 4,
characterized,
in that the securing element (10) is designed as a grooved pin (18) and / or has a head (19) which conically tapers towards the fastening section (6).
dadurch gekennzeichnet,
dass das Sicherungselement (10) ein Schaftbauteil (20), insbesondere aus Metall, und ein an dem Schaftbauteil (20), insbesondere durch Aufpressen, festgelegtes Kopfteil (21), insbesondere aus Kunststoff, aufweist.Handle according to one of claims 2 to 4,
characterized,
in that the securing element (10) has a shaft component (20), in particular made of metal, and a head part (21), in particular made of plastic, fixed to the shaft component (20), in particular by pressing.
dadurch gekennzeichnet,
dass das Kopfteil (21) als in Richtung des Befestigungsabschnittes (6) offene Wanne mit einer Grundfläche und einer, vorzugsweise konischen, Umfangswand (3) ausgebildet ist.Handle according to claim 6,
characterized,
in that the head part (21) is designed as a trough which is open in the direction of the fastening section (6) and has a base surface and a preferably conical circumferential wall (3).
dadurch gekennzeichnet,
dass die Sicherungsmittel (9) einen, insbesondere aus Draht, ausgebildeten, vorzugsweise zylindrischen, Käfig (23) umfassen, der am Befestigungsabschnitt (6), insbesondere durch Umspritzen, festgelegt ist, und der eine Stirnwand (4) des Griffteils in zumindest näherungsweise axialer Richtung mit Radialspiel durchsetzt und die Stirnwand mit Axialabstand quer zur seiner Längserstreckung hintergreift.Handle according to claim 1,
characterized,
in that the securing means (9) comprise a preferably cylindrical cage (23), in particular made of wire, which is fixed on the fastening section (6), in particular by extrusion molding, and which has an end wall (4) of the grip part in at least approximately axial Direction interspersed with radial clearance and engages the end wall with axial distance transversely to its longitudinal extent.
dadurch gekennzeichnet,
dass die Sicherungsmittel (9) mindestens ein Sicherungsseil (25) und/oder Sicherungsband umfassen, die/das eine Stirnwand (4) des Griffteils durchsetzen/durchsetzt und die/das endseitig die Stirnwand (4) hintergreifen/hintergreift und/oder die/das mit einem die Stirnwand (4) hintergreifenden Bauteil (24) verbunden sind/ist.Handle according to claim 1,
characterized,
in that the securing means (9) comprise at least one securing cable (25) and / or securing strap, which / which passes through an end wall (4) of the grip part and / which engages / engages behind the end wall (4) and / or the / with a the front wall (4) engaging behind component (24) are connected / is.
dadurch gekennzeichnet,
dass mindestens zwei Sicherungseile (25) und/oder Sicherungsbänder vorgesehen sind, die mit Abstand zur Längsmittelachse (L) des Handgriffes (1) das flexible Element (5) durchsetzen.Handle according to claim 9,
characterized,
in that at least two securing ropes (25) and / or securing straps are provided, which pass through the flexible element (5) at a distance from the longitudinal central axis (L) of the handle (1).
dadurch gekennzeichnet,
dass das Sicherungsseil (25) und/oder das Sicherungsband, zumindest näherungsweise, zentrisch im Handgriff (1) angeordnet sind/ist.Handle according to claim 9,
characterized,
in that the securing cable (25) and / or the securing band are arranged, at least approximately, centrally in the handle (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710049125 DE102007049125A1 (en) | 2007-10-12 | 2007-10-12 | Handle and hand tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2047953A1 true EP2047953A1 (en) | 2009-04-15 |
EP2047953B1 EP2047953B1 (en) | 2011-09-21 |
Family
ID=40091407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20080166209 Expired - Fee Related EP2047953B1 (en) | 2007-10-12 | 2008-10-09 | Handle and power tool |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2047953B1 (en) |
CN (1) | CN101412215B (en) |
DE (1) | DE102007049125A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105710440A (en) * | 2016-04-28 | 2016-06-29 | 江苏东成机电工具有限公司 | Reciprocating type electric tool |
US20200198112A1 (en) * | 2018-12-20 | 2020-06-25 | Storm Pneumatic Tool Co., Ltd. | Auxiliary grip of hand-held power tool |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010040136A1 (en) * | 2010-09-02 | 2012-03-08 | Robert Bosch Gmbh | Coupling device of electric hand tool e.g. percussion drill, has retainer that is formed of elastic material to position the retainer portions in recess formed in locking portion for fixing tool holder |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1868712A (en) * | 1928-02-04 | 1932-07-26 | Chicago Pneumatic Tool Co | Handle for portable tools |
GB2080920A (en) * | 1980-06-21 | 1982-02-10 | Minamidate Makoto | Vibration damping handle |
DE10005080C1 (en) | 2000-02-04 | 2001-08-02 | Bosch Gmbh Robert | Hand tool has handle with handle part fixed to casing by elastic, vibration-damping element and fixing part fixed at elastic element |
DE10029536A1 (en) | 2000-06-15 | 2001-12-20 | Bosch Gmbh Robert | Handgrip for a portable power tool has an elastic vibration damper at the mounting to the tool housing to prevent vibrations through the handle and maintain a mounting at the tool housing if the damper is damaged |
DE202004012400U1 (en) * | 2004-08-07 | 2005-12-22 | Metabowerke Gmbh | Electrically operated hand tool e.g. angle grinder, has stabilization component extending from body to gripping area, limitedly guided in guide of gripping area against radial direction and movable in axial direction within gripping part |
-
2007
- 2007-10-12 DE DE200710049125 patent/DE102007049125A1/en not_active Withdrawn
-
2008
- 2008-10-09 EP EP20080166209 patent/EP2047953B1/en not_active Expired - Fee Related
- 2008-10-10 CN CN2008101799891A patent/CN101412215B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1868712A (en) * | 1928-02-04 | 1932-07-26 | Chicago Pneumatic Tool Co | Handle for portable tools |
GB2080920A (en) * | 1980-06-21 | 1982-02-10 | Minamidate Makoto | Vibration damping handle |
DE10005080C1 (en) | 2000-02-04 | 2001-08-02 | Bosch Gmbh Robert | Hand tool has handle with handle part fixed to casing by elastic, vibration-damping element and fixing part fixed at elastic element |
DE10029536A1 (en) | 2000-06-15 | 2001-12-20 | Bosch Gmbh Robert | Handgrip for a portable power tool has an elastic vibration damper at the mounting to the tool housing to prevent vibrations through the handle and maintain a mounting at the tool housing if the damper is damaged |
DE202004012400U1 (en) * | 2004-08-07 | 2005-12-22 | Metabowerke Gmbh | Electrically operated hand tool e.g. angle grinder, has stabilization component extending from body to gripping area, limitedly guided in guide of gripping area against radial direction and movable in axial direction within gripping part |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105710440A (en) * | 2016-04-28 | 2016-06-29 | 江苏东成机电工具有限公司 | Reciprocating type electric tool |
US20200198112A1 (en) * | 2018-12-20 | 2020-06-25 | Storm Pneumatic Tool Co., Ltd. | Auxiliary grip of hand-held power tool |
Also Published As
Publication number | Publication date |
---|---|
CN101412215A (en) | 2009-04-22 |
CN101412215B (en) | 2010-12-08 |
EP2047953B1 (en) | 2011-09-21 |
DE102007049125A1 (en) | 2009-04-16 |
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