EP3213879A1 - Poignee supplementaire reduisant les vibrations - Google Patents

Poignee supplementaire reduisant les vibrations Download PDF

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Publication number
EP3213879A1
EP3213879A1 EP16158458.6A EP16158458A EP3213879A1 EP 3213879 A1 EP3213879 A1 EP 3213879A1 EP 16158458 A EP16158458 A EP 16158458A EP 3213879 A1 EP3213879 A1 EP 3213879A1
Authority
EP
European Patent Office
Prior art keywords
adapter
inner sleeve
outer sleeve
additional handle
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16158458.6A
Other languages
German (de)
English (en)
Inventor
Adrian Steingruber
Oliver Ohlendorf
Franz Mössnang
Ernst-Rudolf Lübkert
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP16158458.6A priority Critical patent/EP3213879A1/fr
Publication of EP3213879A1 publication Critical patent/EP3213879A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means
    • 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 present invention relates to an auxiliary handle for an electric hand tool, with a handle, a clamping band unit for attaching the auxiliary handle to the power tool and a arranged between the handle and the strap unit adapter.
  • the tension band unit can be tensioned by turning the grip in a clockwise direction.
  • a relaxation of the clamping band unit can be done by rotating the handle in the opposite direction of rotation.
  • the direction of rotation in each case refers to a longitudinal axis of the handle.
  • Additional handles of the type mentioned are basically known from the prior art. They are used in electric hand tool machines, such as drills, hammer drills or combi hammer used.
  • the adapter has an outer sleeve and a coaxially arranged and at least partially mounted inside the outer sleeve via an elastomer inner sleeve, wherein the adapter has a rotation stop, which has a predetermined rotation between the outer sleeve and inner sleeve in both directions of rotation about the longitudinal axis hard limited.
  • the invention includes the realization that elastomers as vibration-damping damping elements for additional handles for power tools, although in principle known from the prior art, but not with additional handles of the type mentioned.
  • the European patent publication EP 0 700 328 B1 For example, a vibration-absorbing handle for a power tool. From the German patent DE 34 15 255 C2 is described another vibration-damping handle for work machines. The German patent application DE 10 2007 047 083 A1 Finally, describes an auxiliary handle for a hand tool with at least one handle element and an insulating device with at least one damping element, wherein the insulating device has at least one hard stop cooperating with the grip element when the grip element is tilted.
  • the present invention designed additional handle allows easy and safe installation or disassembly on a device neck of an electric hand tool by the fact that an overload of the elastomer during rotation by means of the rotation stop is avoided.
  • the auxiliary handle according to the invention is comfortable, that is, vibration-reducing, and at the same time safe, since a high service life of the elastomer is ensured by the protection of the elastomer.
  • the adapter has a tilt stop, which limits a predetermined tilting between outer sleeve and inner sleeve transverse to the longitudinal axis hard.
  • a tilt stop which limits a predetermined tilting between outer sleeve and inner sleeve transverse to the longitudinal axis hard.
  • the rotation stop and the tilt stop are formed together in functional integration.
  • the rotational stop and the tilt stop may have a common stop pin, which is on the one hand rigidly coupled to the inner sleeve.
  • the stop pin can be arranged to be movable in a recess.
  • the stop pin is designed as a dowel pin.
  • the stop pin can be oriented transversely, preferably perpendicular to the inner sleeve. These orientations are to be understood in each case with respect to the axis of rotation of the inner sleeve.
  • the recess is formed as a groove.
  • the recess is formed as a groove extending in length parallel to the longitudinal axis within the adapter.
  • a width of the groove is preferably oriented radially to the longitudinal axis.
  • the length of the groove is preferably ten times as large as the width of the groove.
  • two grooves, preferably exactly two grooves are arranged within the adapter. These may be arranged uniformly spaced around the longitudinal axis.
  • the recess is provided as a bore in the outer sleeve.
  • the adapter has a threaded bolt as a clamping anchor for the clamping band unit.
  • the threaded bolt is pressed into the inner sleeve.
  • the adapter can have a threaded sleeve for tensioning a threaded bolt encompassed by the tensioning belt unit. Preferably then the threaded sleeve is pressed into the inner sleeve.
  • stop pin has a pin diameter and the bore has a bore diameter and a radial clearance is provided around a located within the adapter end of the threaded bolt, whose width is greater than the difference between the bore diameter and pin diameter.
  • the inner sleeve protrudes, based on the longitudinal axis, on one side or on both sides beyond the outer sleeve. If, for example, the inner sleeve projects beyond the outer sleeve on the side facing the tensioning strap unit, then the protruding inner sleeve can form an uprising for the tensioning strap unit. For example, if the inner sleeve protrudes beyond the outer sleeve on the side of the outer sleeve facing the handle, then this projection can define, for example, a radial free space.
  • the inner sleeve are rigidly connected to the clamping band unit and / or the outer sleeve rigidly connected to the handle.
  • the tensioning band unit is rigidly connected to the inner sleeve via a threaded bolt as a tensioning anchor.
  • the handle may be rigidly connected to the outer sleeve via a different threaded bolt, such as a hexagon screw.
  • the adapter is frusto-conical.
  • the elastomer is preferably specified for a maximum torque of 10 to 20 Newton meters between outer sleeve and inner sleeve, preferably 15 Newton meters specified.
  • FIG Fig. 1 A first embodiment of an auxiliary handle 100 according to the invention is shown in FIG Fig. 1 shown.
  • the auxiliary handle 100 has a handle 10.
  • a tension band unit 20 included in the auxiliary handle is shown in FIG Fig. 1 not shown, but can, for example, the Fig. 2 be removed.
  • the additional handle 100 in Fig. 1 has an adapter 30.
  • the adapter 30 has an outer sleeve 31 and a coaxially arranged on an elastomer 33 in sections within the outer sleeve 31 mounted inner sleeve 35.
  • the adapter 30 has a rotation stop 40, which has a predetermined rotation AD (see. Fig. 4a ) between the outer sleeve 31 and inner sleeve 35 in both directions of rotation L, R hard around the longitudinal axis LA of the handle 10. Also included in the adapter 30 is a tilting stop 50, which has a predetermined tilting AK (cf. Fig. 4b ) between outer sleeve 31 and inner sleeve 35 transverse to the longitudinal axis LA hard limited.
  • the rotational stop 40 and the tilt stop 50 are formed together in functional integration and have for this purpose a common stop pin in the form of a clamping pin 45.
  • the clamping pin 45 is on the one hand rigidly coupled to the inner sleeve 35, in the presently illustrated embodiment via a threaded bolt 34 which is pressed into the inner sleeve 35 and as a clamping anchor for the clamping band unit 20 (see. Fig. 2 ) serves.
  • the clamping pin 45 is movable in a recess formed as a groove 37.
  • Fig. 1 can be removed, the stop pin is oriented in the form of the clamping pin 45 perpendicular to the inner sleeve 35 and braced in a bore of the threaded bolt 34.
  • the clamping band unit 20 is placed in the assembled state around the neck of a hand-held power tool, not shown here. Via a pressure piece 21, a disc 22 and a threaded bolt 34 'encompassed by the tensioning band unit, they are firmly connected to a threaded sleeve 36 encompassed by the adapter 30. The threaded sleeve 36 is firmly pressed into the inner sleeve 35. The forces and moments are elastically transmitted to the outer sleeve 31 via the elastomer 33.
  • the outer sleeve 31 is rotationally pressed in the present embodiment shown in the adapter 30.
  • the adapter 30 in turn is connected via a threaded bolt 34 fixed to the handle 10.
  • the tension band unit 24 can be drawn into the housing 23 to a certain extent. As a result, the neck of the device (not shown) between clamping band 24 and a clamping segment 25 is braced.
  • the housing 23 thus serves as a pressure support, while the clamping band 24 and the threaded bolt 34 ', in this case a hexagonal screw, are loaded in the mounted state to pressure.
  • a cocking in Fig. 2 shown clamping band unit 20 is effected by rotating the handle 10 in a clockwise direction R about the longitudinal axis LA.
  • a relaxation of the tension band 24 of the tension band unit 20 takes place by turning the grip 10 in the opposite clockwise direction L about the longitudinal axis LA.
  • FIG. 3 a perspective view of the adapter 30 of the embodiment Fig. 1 ,
  • the recess is provided in the form of two grooves 37 which extend their length LN parallel to the longitudinal axis LA within the adapter 30 and whose width BN is oriented radially to the longitudinal axis LA.
  • the elastomer 33 is specified in the present embodiment for a maximum torque between outer sleeve 31 and inner sleeve 35 of 15 Newton meters.
  • the adapter 30 has a threaded bolt 34 as a clamping anchor for the clamping band unit 20 (see. Fig. 2 ) on.
  • the threaded bolt 34 is pressed in the present embodiment shown in the inner sleeve 35.
  • the clamping pin 45 is made in one piece with the threaded bolt 34 as a special screw.
  • the outer sleeve 31 is pressed into the adapter 30, so that slipping out of the outer sleeve 31 is avoided from the adapter 30.
  • this may be, this is in Fig. 1 represented by a support disk 31 'be realized.
  • the two recesses formed as rectangular grooves 37 are in Fig. 3 good to see.
  • the one-piece designed as a special screw with the threaded bolt 34 clamping pin 45 projects on both sides as a guide pin in a respective groove 37 a.
  • FIG. 4 shows Fig. 4a a section through the adapter 30 in the longitudinal direction.
  • Fig. 4b is a section AA along the section line AA in Fig. 4a
  • the function of the tilt stopper 50 will be described with reference to FIG. 4a.
  • a gimbal can occur because the threaded bolt 34 is rigid with the tension band unit (see. Fig. 2 ) connected is.
  • distances a, b, c of integrally formed with the threaded bolt 34 clamping pin to the groove define the maximum possible path, which is implemented by bending the elastomer 33 vibration-reducing. If the tilt AK maximum, the rigid dowel pin 45 is located on a stop surface 45 'in the adapter. Such a predetermined tilt AK between outer sleeve 31 and inner sleeve 35 is limited transversely to the longitudinal axis LA hard.
  • Fig. 4b the rotation stop 40 will be explained. This is realized by the integrally formed with the threaded bolt 34 clamping pin 45 within the groove 37.
  • An in Fig. 4b Plotted distance D defines a distance over which the clamping pin 45 can move in the radial direction within the groove 37. If the rotation AD around the pivot point DP is the maximum, a rotational stop 40 acting between the outer sleeve 31 and the inner sleeve 35 in both directions of rotation LR is realized in that the tensioning pin 45 abuts against the abutment surface 45 "which is formed by an inner side of the groove attached to this.
  • FIG Fig. 5 An alternative embodiment of the adapter 30 is shown in FIG Fig. 5 shown.
  • the recess in which the clamping pin 45 is movable provided as a bore 39 in the outer sleeve 31.
  • An axial securing of the outer sleeve 31 in the adapter 30 is realized in the present embodiment by a screw 36 present a grub screw.
  • FIG. 6a first a cross section along the longitudinal axis LA.
  • Fig. 6b shows a sectional view AA along the in Fig. 6 a drawn section line AA.
  • the adapter 30 has a threaded bolt 34 as a clamping anchor for the clamping band unit 20 (see. Fig. 2 ) on.
  • the threaded bolt 34 is pressed into the inner sleeve.
  • the stop pin provided as a clamping pin 45 is in turn clamped in the threaded bolt 34 and thereby rigidly coupled to the threaded bolt 34.
  • This rigid coupling of the clamping pin 45 is also coupled to the inner sleeve 35, since in this the threaded bolt 34 is pressed.
  • the hole 39 has a bore diameter BD, which is greater than a pin diameter SD of the clamping pin 45.
  • a radial clearance 38 is provided, whose width W38 is greater than the difference between the bore diameter BD and Pin diameter SD.
  • the inner edge of the bore 39 defines a circumferential belt-shaped abutment surface 45 '"for the clamping pin 45.
  • the belt-shaped stop surface 45'' forms a hard stop both for a rotation AD between the outer sleeve 31 and inner sleeve 35 and for a tilt AK between the outer sleeve 31 and Inner sleeve 35. In this way, the rotation stop 40 and the tilt stop 50 are formed together in functional integration.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
EP16158458.6A 2016-03-03 2016-03-03 Poignee supplementaire reduisant les vibrations Withdrawn EP3213879A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16158458.6A EP3213879A1 (fr) 2016-03-03 2016-03-03 Poignee supplementaire reduisant les vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16158458.6A EP3213879A1 (fr) 2016-03-03 2016-03-03 Poignee supplementaire reduisant les vibrations

Publications (1)

Publication Number Publication Date
EP3213879A1 true EP3213879A1 (fr) 2017-09-06

Family

ID=55521513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16158458.6A Withdrawn EP3213879A1 (fr) 2016-03-03 2016-03-03 Poignee supplementaire reduisant les vibrations

Country Status (1)

Country Link
EP (1) EP3213879A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11583992B2 (en) 2021-03-25 2023-02-21 Milwaukee Electric Tool Corporation Side handle for power tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3415255C2 (fr) 1983-04-22 1992-04-09 Roland Upplands-Vaesby Se Andersson
EP0700328B1 (fr) 1993-05-26 1997-01-02 Ingersoll-Rand Company Outil a moteur pourvu d'une poignee amortissant les vibrations
DE102007047083A1 (de) 2007-10-01 2009-04-02 Robert Bosch Gmbh Zusatzhandgriff
EP2082845A2 (fr) * 2008-01-24 2009-07-29 Black & Decker, Inc. Ensemble de montage pour poignée d'outil électrique
EP2159009A1 (fr) * 2008-08-27 2010-03-03 Metabowerke Gmbh Adaptateur pour poignée supplémentaire et poignée supplémentaire
EP2241408A1 (fr) * 2009-04-17 2010-10-20 HILTI Aktiengesellschaft Poignée latérale
US20130025088A1 (en) * 2010-02-11 2013-01-31 Illinois Tool Works Inc. Handle arrangement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3415255C2 (fr) 1983-04-22 1992-04-09 Roland Upplands-Vaesby Se Andersson
EP0700328B1 (fr) 1993-05-26 1997-01-02 Ingersoll-Rand Company Outil a moteur pourvu d'une poignee amortissant les vibrations
DE102007047083A1 (de) 2007-10-01 2009-04-02 Robert Bosch Gmbh Zusatzhandgriff
EP2082845A2 (fr) * 2008-01-24 2009-07-29 Black & Decker, Inc. Ensemble de montage pour poignée d'outil électrique
EP2159009A1 (fr) * 2008-08-27 2010-03-03 Metabowerke Gmbh Adaptateur pour poignée supplémentaire et poignée supplémentaire
EP2241408A1 (fr) * 2009-04-17 2010-10-20 HILTI Aktiengesellschaft Poignée latérale
US20130025088A1 (en) * 2010-02-11 2013-01-31 Illinois Tool Works Inc. Handle arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11583992B2 (en) 2021-03-25 2023-02-21 Milwaukee Electric Tool Corporation Side handle for power tool
US11919140B2 (en) 2021-03-25 2024-03-05 Milwaukee Electric Tool Corporation Side handle for power tool

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