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DE102006035434A1 - Hand tool machine e.g. percussion drilling machine, has housing part, and shaft that is rotatably supported in housing part over shaft bearing, where housing part forms snap retainer for bearing and shaft is designed as spindle - Google Patents

Hand tool machine e.g. percussion drilling machine, has housing part, and shaft that is rotatably supported in housing part over shaft bearing, where housing part forms snap retainer for bearing and shaft is designed as spindle Download PDF

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Publication number
DE102006035434A1
DE102006035434A1 DE102006035434A DE102006035434A DE102006035434A1 DE 102006035434 A1 DE102006035434 A1 DE 102006035434A1 DE 102006035434 A DE102006035434 A DE 102006035434A DE 102006035434 A DE102006035434 A DE 102006035434A DE 102006035434 A1 DE102006035434 A1 DE 102006035434A1
Authority
DE
Germany
Prior art keywords
housing part
shaft
bearing
hand tool
snap
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.)
Ceased
Application number
DE102006035434A
Other languages
German (de)
Inventor
Jochen Erhardt
Eric Mascall
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 DE102006035434A priority Critical patent/DE102006035434A1/en
Priority to CNA2007101692669A priority patent/CN101181786A/en
Priority to FR0758954A priority patent/FR2908333A1/en
Priority to US11/985,301 priority patent/US20080110658A1/en
Publication of DE102006035434A1 publication Critical patent/DE102006035434A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/008—Gear boxes, clutches, bearings, feeding mechanisms or like equipment
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/008—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Sliding-Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

The machine (10) has a housing part (11) and a shaft (12) that is rotatably supported in the housing part over a shaft bearing (13), where the shaft is designed as spindle. The housing part forms a snap retainer (14) for the bearing, where the snap retainer has two snapping units that are extensively arranged at a cylindrical receiving area. Bulge-like ribs are formed radially inward at free end areas of the snap units. A stopper is formed at the snap retainer, and defines a plug-in depth of the bearing in the receiving space.

Description

Stand der TechnikState of the art

Aufgabe der ErfindungObject of the invention

Die Erfindung betrifft eine Handwerkzeugmaschine der im Oberbegriff von Patentanspruch 1 genannten Art. Derartige Handwerkzeugmaschinen sind z. B. als Bohr- oder Schlagbohrmaschinen oder auch als Schraubgeräte ausgebildet.The The invention relates to a hand tool machine in the preamble From claim 1 mentioned type. Such hand tool machines are z. B. as drilling or impact drills or as a screwdriver.

Aus der DE 33 13 656 ist eine handgeführte Bohr- und Schlagbohrmaschine bekannt bei der an einer Gehäuseöffnung ein Wellenlager für die Bohrspindel angeordnet ist. Das Wellenlager ist dabei in einem zylindrischen Gehäuseabschnitt angeordnet und stützt sich in einer axialen Richtung an einer am Gehäuse ausgebildeten Stufe ab. In der anderen, dem Bohrfutter zugewandten Richtung wird das Lager über einen zusätzlichen Ringkörper gehalten, der seinerseits über einen Sicherungsring fixiert ist.From the DE 33 13 656 is a hand-held drilling and impact drilling machine in which a shaft bearing for the drill spindle is arranged at a housing opening. The shaft bearing is arranged in a cylindrical housing portion and is supported in an axial direction at a trained on the housing stage. In the other, the drill chuck facing direction, the bearing is held by an additional ring body, which in turn is fixed by a retaining ring.

Diese Art der Sicherung des Wellenlagers an einem Gehäuse ist in der Montage sehr aufwändig und verursacht erhöhte Kosten.These Type of securing the shaft bearing to a housing is very in the assembly elaborate and causes increased Costs.

Aus der GB 2 276 214 ist ferner eine Lagerfassung bekannt, bei dem ein Wälzlager unter Zwischenlage einer separaten Polypropylen-Hülse in einer Gehäuseöffnung gehalten ist. Die Polypropylen-Hülse hintergreift das Wälzlager dabei mit einer umlaufenden Lippe.From the GB 2 276 214 Furthermore, a bearing holder is known, in which a roller bearing is held with the interposition of a separate polypropylene sleeve in a housing opening. The polypropylene sleeve engages behind the rolling bearing with a circumferential lip.

Von Nachteil hierbei ist jedoch, dass die Montage des Wälzlagers aufwändig ist, da zunächst die Hülse an dem Gehäuse montiert werden muss und dann erst das Wälzlager in die Hülse eingesetzt werden kann. Ferner verursacht die zusätzliche Polypropylen-Hülse Zusatzkosten.From Disadvantage here is that the assembly of the bearing costly is because first the Sleeve on the housing must be mounted and then only the rolling bearing can be inserted into the sleeve can. Furthermore, the additional causes Polypropylene sleeve Extra cost.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Handwerkzeugmaschine bereitzustellen, die die genannten Nachteile vermeidet und bei der ein Wellenlager leicht montierbar ist.Of the The present invention is based on the object, a hand tool to provide that avoids the disadvantages mentioned and in the a shaft bearing is easy to install.

Diese Aufgabe wird erfindungsgemäss durch die in Anspruch 1 genannten Massnahmen erreicht. Demnach bildet das Gehäuseteil eine Schnappaufnahme für das Wellenlager aus, die eine einfache und kostengünstige Sicherung und Montage des Wellenlagers ohne zusätzliche Teile erlaubt. Die Schnappaufnahme wird so z. B. beim Spritzgiessen des Gehäuseteils direkt an diesem ausgebildet.These Task is according to the invention achieved by the measures mentioned in claim 1. Accordingly, forms the housing part a snap-shot for the shaft bearing, which is a simple and inexpensive fuse and mounting the shaft bearing without additional parts allowed. The snap shot is so z. B. formed during injection molding of the housing part directly on this.

Vorteilhaft weist die Schnappaufnahme wenigstens zwei Schnappelemente auf, die umfänglich an einem zylindrischen Aufnahmeraum angeordnet sind. Die Schnappelemente ermöglichen dabei zum einen eine leichte Entformbarkeit bei der Herstellung als Spritzgussteil und zum anderen ein leichtes Einbringen des Wellenlagers in den Aufnahmeraum der Schnappaufnahme.Advantageous has the snap-on at least two snap elements, the circumferentially a cylindrical receiving space are arranged. The snap elements enable on the one hand a slight demolding in the production as Injection molded part and on the other a slight introduction of the shaft bearing in the receiving space of the snap-shot.

Günstig ist es ferner, wenn an freien Endbereichen der Schnappelemente jeweils nach radial innen abragende wulstförmige Rippen ausgebildet sind, die das Wellenlager in einer axialen Richtung Hintergreifen und sichern.Cheap is it further when at free end portions of the snap elements respectively are formed after radially inwardly projecting bead-shaped ribs, which engage behind the shaft bearing in an axial direction and to back up.

Von Vorteil ist es auch, wenn an der Schnappaufnahme wenigstens ein Anschlag ausgebildet ist, der die Einstecktiefe des Wellenlagers im Aufnahmeraum definiert und dieses in der den Rippen abgewandten Richtung axial sichert.From It is also an advantage if at least one of the snapshots Stop is formed, the insertion depth of the shaft bearing defined in the receiving space and this in the ribs facing away Direction axially secures.

Vorteilhaft ist die Schnappaufnahme an einer Gehäuseöffnung im Gehäuseteil angeordnet, so dass ein als Spindellager ausgebildetes Wellenlager zur Lagerung einer aus dem Gehäuse herausgeführten und als Spindel ausgebildeten Welle in einfacher Weise sicherbar und montierbar ist.Advantageous is the snap-on receptacle on a housing opening in the housing part arranged so that designed as a spindle bearing shaft bearing for Storage one from the housing led out and shaft formed as a spindle securable in a simple manner and mountable.

In den Zeichnungen ist die Erfindung in einem Ausführungsbeispiel dargestellt.In The drawings illustrate the invention in one embodiment.

Es zeigen:It demonstrate:

1 eine Detailansicht einer Handwerkzeugmaschine mit einer erfindungsgemässen Lageraufnahme für ein Wellenlager im Schnitt, 1 a detailed view of a hand tool with an inventive bearing receptacle for a shaft bearing in section,

2 ein vergrösserter Ausschnitt gemäss der Markierung II aus 1. 2 an enlarged section according to the mark II 1 ,

In 1 ist ein Detail einer als Schlagbohrmaschine ausgebildeten Handwerkzeugmaschine 10 wiedergegeben, die ein Gehäuseteil 11 aufweist in dem eine als Spindel ausgebildete Welle 12 eines Schlagbohrwerks über ein als Spindellager ausgebildetes Wellenlager 13 drehbar gelagert ist und an einer Gehäuseöffnung 19 aus dem Gehäuseteil 11 austritt. Das Gehäuseteil 11 bildet eine insgesamt mit 14 bezeichnete Schnappaufnahme für das Wellenlager 13 aus, die einen zylindrischen Aufnahmeraum 18, einen senkrecht zur axialen Erstreckung des Aufnahmeraums 18 angeordneten und als Stufe ausgebildeten Anschlag 16 und wenigstens zwei Schnappelemente 15 aufweist. Die Schnappelemente 15 sind dabei umfänglich an dem zylindrischen Aufnahmeraum 18 angeordnet und weisen an ihren freien Enden in Richtung zur Welle 12 hin vorstehende wulstförmige Rippen 17 auf. Die Schnappelemente 15 sind vorzugsweise um den Aufnahmeraum 18 herum gebogen und bilden einen unterbrochenen Ring aus. Die Schnappaufnahme 14 ist einteilig mit dem Gehäuseteil 11 ausgebildet und kann mit diesem z. B. im Spritzgussverfahren hergestellt werden. Über ein Druckfederelement 20 ist die Welle 12 bzw. die Spindel in eine dem Wellenlager 13 abgewandte Richtung axial beaufschlagt, um die Welle 12, welche im Schiebesitz im Wellenlager 13 geführt ist, im Schlagbohrbetrieb zurückzustellen.In 1 is a detail of a trained as a hammer drill hand tool 10 reproduced, which is a housing part 11 in which a trained as a spindle shaft 12 a percussion drill via a designed as a spindle bearing shaft bearing 13 is rotatably mounted and at a housing opening 19 from the housing part 11 exit. The housing part 11 forms a total with 14 designated snap-in for the shaft bearing 13 out, which has a cylindrical receiving space 18 , one perpendicular to the axial extent of the receiving space 18 arranged and designed as a stage stop 16 and at least two snap elements 15 having. The snap elements 15 are circumferentially on the cylindrical receiving space 18 arranged and have at their free ends in the direction of the shaft 12 protruding bead-shaped ribs 17 on. The snap elements 15 are preferably around the receiving space 18 bent around and form a broken ring. The snap shot 14 is integral with the housing part 11 trained and can with this z. B. are produced by injection molding. About a compression spring element 20 is the wave 12 or the spindle in a shaft bearing 13 opposite direction axially applied to the shaft 12 , which are in the sliding seat in the shaft bearing 13 is reset in the Schlagbohrbetrieb.

Bei der Montage der Handwerkzeugmaschine 10 kann das Wellenlager 13 in die Schnappaufnahme 14 unter leichtem Aufbiegen der Schnappelemente 15 nach radial aussen hin eingeschoben werden, wobei nach dem vollständigen Einschieben des Wellenlagers 13 bis zum Anschlag 16 die Schnappelemente 15 zurückschnappen und sich die wulstförmigen Rippen 17 dabei hinter das Wellenlager 13 legen und dieses gegen ein Herausbewegen in der dem Anschlag 16 abgewandten axialen Richtung sichern.When mounting the hand tool 10 can the shaft bearing 13 in the snap-shot 14 with slight bending of the snap elements 15 be inserted radially outwards, wherein after the complete insertion of the shaft bearing 13 until the stop 16 the snap elements 15 snap back and get the beaded ribs 17 behind the shaft bearing 13 place this against moving out in the stop 16 Secure away from the axial direction.

Claims (5)

Handwerkzeugmaschine mit einem Gehäuseteil (11) und mit einer in dem Gehäuseteil (11) über ein Wellenlager (13) drehbar gelagerten Welle (12), dadurch gekennzeichnet, dass das Gehäuseteil (11) eine Schnappaufnahme (14) für das Wellenlager (13) ausbildet.Hand tool with a housing part ( 11 ) and with a in the housing part ( 11 ) via a shaft bearing ( 13 ) rotatably mounted shaft ( 12 ), characterized in that the housing part ( 11 ) a snapshot ( 14 ) for the shaft bearing ( 13 ) trains. Handwerkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Schnappaufnahme (14) wenigstens zwei Schnappelemente (15) aufweist, die umfänglich an einem zylindrischen Aufnahmeraum (18) angeordnet sind.Powered hand tool according to Claim 1, characterized in that the snap-in receptacle ( 14 ) at least two snap elements ( 15 ) circumferentially on a cylindrical receiving space ( 18 ) are arranged. Handwerkzeugmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an freien Endbereichen der Schnappelemente (15) jeweils nach radial innen abragende wulstförmige Rippen (17) ausgebildet sind.Powered hand tool according to claim 1 or 2, characterized in that at free end portions of the snap elements ( 15 ) in each case radially outwardly projecting bead-shaped ribs ( 17 ) are formed. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass an der Schnappaufnahme (14) wenigstens ein Anschlag (16) ausgebildet ist, der die Einstecktiefe des Wellenlagers (13) im Aufnahmeraum (18) definiert.Powered hand tool according to one of claims 1 to 3, characterized in that on the snap ( 14 ) at least one stop ( 16 ) is formed, the insertion depth of the shaft bearing ( 13 ) in the recording room ( 18 ) Are defined. Handwerkzeugmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Schnappaufnahme (14) an einer Gehäuseöffnung (19) im Gehäuseteil (11) angeordnet ist.Powered hand tool according to one of claims 1 to 4, characterized in that the snap-in receptacle ( 14 ) at a housing opening ( 19 ) in the housing part ( 11 ) is arranged.
DE102006035434A 2006-11-13 2006-11-13 Hand tool machine e.g. percussion drilling machine, has housing part, and shaft that is rotatably supported in housing part over shaft bearing, where housing part forms snap retainer for bearing and shaft is designed as spindle Ceased DE102006035434A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE102006035434A DE102006035434A1 (en) 2006-11-13 2006-11-13 Hand tool machine e.g. percussion drilling machine, has housing part, and shaft that is rotatably supported in housing part over shaft bearing, where housing part forms snap retainer for bearing and shaft is designed as spindle
CNA2007101692669A CN101181786A (en) 2006-11-13 2007-11-08 Hand tool machine
FR0758954A FR2908333A1 (en) 2006-11-13 2007-11-12 PORTABLE DEVICE
US11/985,301 US20080110658A1 (en) 2006-11-13 2007-11-13 Hand-held power tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006035434A DE102006035434A1 (en) 2006-11-13 2006-11-13 Hand tool machine e.g. percussion drilling machine, has housing part, and shaft that is rotatably supported in housing part over shaft bearing, where housing part forms snap retainer for bearing and shaft is designed as spindle

Publications (1)

Publication Number Publication Date
DE102006035434A1 true DE102006035434A1 (en) 2008-05-15

Family

ID=39277396

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102006035434A Ceased DE102006035434A1 (en) 2006-11-13 2006-11-13 Hand tool machine e.g. percussion drilling machine, has housing part, and shaft that is rotatably supported in housing part over shaft bearing, where housing part forms snap retainer for bearing and shaft is designed as spindle

Country Status (4)

Country Link
US (1) US20080110658A1 (en)
CN (1) CN101181786A (en)
DE (1) DE102006035434A1 (en)
FR (1) FR2908333A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327911A1 (en) * 1992-09-09 1994-03-10 Fischer Georg Automobilguss Arrangement of a rolling bearing
EP1162379A2 (en) * 2000-06-06 2001-12-12 Skf France Belt tensioning pulley
DE10150613A1 (en) * 2001-10-12 2003-04-30 Visteon Global Tech Inc Vehicle wheel bearing unit comprises housing in which roller bearing is fitted, inner end of outer ring fitting against stop surface and outer edge being held in place by lugs formed by hammering housing
DE10056814B4 (en) * 1999-11-16 2006-06-29 Makita Corp., Anjo Motorized tool with working speed control circuit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3561543A (en) * 1969-02-07 1971-02-09 Ingersoll Rand Co Rotary impact wrench mechanism
US3734515A (en) * 1971-01-29 1973-05-22 Thor Power Tool Co Power wrench with interchangeable adapters
US3802518A (en) * 1972-03-09 1974-04-09 J Albert Ratchet implement
US3873863A (en) * 1974-02-25 1975-03-25 Singer Co Double insulated electrically powered hand tool and coupler therefor
GB9304540D0 (en) * 1993-03-05 1993-04-21 Black & Decker Inc Power tool and mechanism
US5667330A (en) * 1995-11-28 1997-09-16 Case Corporation Quick-connect mechanism for releasably retaining a power take-off shaft within an output shaft hub
US6070674A (en) * 1998-06-11 2000-06-06 Chicago Pneumatic Tool Company Modified cage member for an impact mechanism
US6126370A (en) * 1998-07-22 2000-10-03 Black & Decker Inc. Removable tool holder
US7083003B1 (en) * 2001-04-23 2006-08-01 Snap-On Incorporated Power tool with detachable drive end

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327911A1 (en) * 1992-09-09 1994-03-10 Fischer Georg Automobilguss Arrangement of a rolling bearing
DE10056814B4 (en) * 1999-11-16 2006-06-29 Makita Corp., Anjo Motorized tool with working speed control circuit
EP1162379A2 (en) * 2000-06-06 2001-12-12 Skf France Belt tensioning pulley
DE10150613A1 (en) * 2001-10-12 2003-04-30 Visteon Global Tech Inc Vehicle wheel bearing unit comprises housing in which roller bearing is fitted, inner end of outer ring fitting against stop surface and outer edge being held in place by lugs formed by hammering housing

Also Published As

Publication number Publication date
FR2908333A1 (en) 2008-05-16
CN101181786A (en) 2008-05-21
US20080110658A1 (en) 2008-05-15

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: HILTI AKTIENGESELLSCHAFT, SCHAAN, LI

R002 Refusal decision in examination/registration proceedings
R003 Refusal decision now final

Effective date: 20130705