EP2047953B1 - Poignée et machine-outil manuelle - Google Patents
Poignée et machine-outil manuelle Download PDFInfo
- Publication number
- EP2047953B1 EP2047953B1 EP20080166209 EP08166209A EP2047953B1 EP 2047953 B1 EP2047953 B1 EP 2047953B1 EP 20080166209 EP20080166209 EP 20080166209 EP 08166209 A EP08166209 A EP 08166209A EP 2047953 B1 EP2047953 B1 EP 2047953B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handle
- cage
- end wall
- securing
- power tool
- 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.)
- Not-in-force
Links
- 238000013016 damping Methods 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- B25F5/006—Vibration damping means
-
- 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
- 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 detach 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, thus largely avoiding vibration transmission on the handle portion.
- the element consists of a foamed plastic.
- the elastic, vibration-damping element made of a thermoplastic elastomer (TPE) is formed.
- the securing means may 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 may be formed rivet-like.
- the securing element comprises, for example, a rivet shank and an end, in the handle portion projecting rivet head, 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 can be thread-free and, for example, fixed by welding to the attachment portion, preferably to the means, for, in particular detachable, 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. As a result, a solution is obtained which is easy to manufacture and assemble.
- 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 at 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 attachment portion preferably on the means for fixing the handle on the hand tool, is preferably carried out by screwing, wherein it is preferred in which suitable means, such as adhesive, are provided for preventing unintentional release of the screw connection. It is particularly preferred if the screw shaft passes through the end wall of the handle portion with radial clearance.
- the rigid securing element may be formed as a radially expandable grooved pin, wherein the head of the grooved pin prevents detachment of the grip portion of the attachment portion. It is particularly preferred, wherein the head of a locking element formed 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 center axis of the handle.
- a device 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 handle according to claim 1. It may be in the handle to a main handle of the power tool, which is permanently arranged on the power tool, act. 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.
- 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 formed as a grooved pin 18 with a conical head 19, wherein the head 19 is formed such that slipping 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 grooved 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.
- 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.
- a 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 cable 25 is welded to the front end of the means 8 designed 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
Claims (7)
- Poignée, en particulier poignée supplémentaire, pour une machine-outil manuelle, comprenant une portion de poignée (2) qui est connectée par le biais d'un élément élastique (5) amortissant les vibrations à une portion de fixation (6) présentant des moyens (8) pour la fixation à la machine-outil manuelle, la portion de fixation (6) étant fixée de manière imperdable à la portion de poignée (2) par le biais de moyens de fixation (9) traversant l'élément élastique (5), caractérisée en ce que les moyens de fixation (9) comprennent une cage (23) réalisée sous forme flexible, qui est surmoulée autour de l'élément élastique (5), la cage (23) étant fixée sur la portion de fixation (6) et traversant une paroi frontale (4) de la partie de poignée au moins approximativement dans la direction axiale avec un jeu radial, et venant en prise par l'arrière avec la paroi frontale à distance axiale transversalement à son étendue longitudinale.
- Poignée selon la revendication 1, caractérisée en ce que la cage (23) est réalisée en fil métallique.
- Poignée selon la revendication 1, caractérisée en ce que la cage (23) est réalisée en cordons en plastique.
- Poignée selon l'une quelconque des revendications précédentes, caractérisée en ce que la cage (23) est réalisée sous forme cylindrique.
- Poignée selon l'une quelconque des revendications précédentes, caractérisée en ce que la cage (23) est fixée par surmoulage sur la portion de fixation (6).
- Poignée selon l'une quelconque des revendications précédentes, caractérisée en ce qu'un composant (24) de forme annulaire est fixé sur la cage (23) à distance axiale d'un côté arrière (15) de la paroi frontale (4).
- Machine-outil manuelle comprenant une poignée selon l'une quelconque des revendications précédentes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710049125 DE102007049125A1 (de) | 2007-10-12 | 2007-10-12 | Handgriff sowie Handwerkzeugmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2047953A1 EP2047953A1 (fr) | 2009-04-15 |
EP2047953B1 true EP2047953B1 (fr) | 2011-09-21 |
Family
ID=40091407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20080166209 Not-in-force EP2047953B1 (fr) | 2007-10-12 | 2008-10-09 | Poignée et machine-outil manuelle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2047953B1 (fr) |
CN (1) | CN101412215B (fr) |
DE (1) | DE102007049125A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12021437B2 (en) | 2019-06-12 | 2024-06-25 | Milwaukee Electric Tool Corporation | Rotary power tool |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010040136A1 (de) * | 2010-09-02 | 2012-03-08 | Robert Bosch Gmbh | Kupplungsvorrichtung für eine Elektrohandwerkzeugmaschine, Zubehörteil sowie Elektrohandwerkzeugmaschine |
CN105710440A (zh) * | 2016-04-28 | 2016-06-29 | 江苏东成机电工具有限公司 | 往复式电动工具 |
US20200198112A1 (en) * | 2018-12-20 | 2020-06-25 | Storm Pneumatic Tool Co., Ltd. | Auxiliary grip of hand-held power tool |
Family Cites Families (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 |
JPS57150014A (en) * | 1980-06-21 | 1982-09-16 | Makoto Minamidate | Oscillation control type handle device |
DE10005080C1 (de) | 2000-02-04 | 2001-08-02 | Bosch Gmbh Robert | Handwerkzeugmaschine mit zumindest einem Handgriff und wenigstens einem elastischen, schwingungsdämpfenden Element |
DE10029536A1 (de) | 2000-06-15 | 2001-12-20 | Bosch Gmbh Robert | Handwerkzeugmaschine mit zumindest einem Handgriff |
DE202004012400U1 (de) * | 2004-08-07 | 2005-12-22 | Metabowerke Gmbh | Elektrohandwerkzeuggerät |
-
2007
- 2007-10-12 DE DE200710049125 patent/DE102007049125A1/de not_active Withdrawn
-
2008
- 2008-10-09 EP EP20080166209 patent/EP2047953B1/fr not_active Not-in-force
- 2008-10-10 CN CN2008101799891A patent/CN101412215B/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12021437B2 (en) | 2019-06-12 | 2024-06-25 | Milwaukee Electric Tool Corporation | Rotary power tool |
Also Published As
Publication number | Publication date |
---|---|
CN101412215A (zh) | 2009-04-22 |
CN101412215B (zh) | 2010-12-08 |
DE102007049125A1 (de) | 2009-04-16 |
EP2047953A1 (fr) | 2009-04-15 |
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