EP1491296B1 - Elément de raccord - Google Patents

Elément de raccord Download PDF

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Publication number
EP1491296B1
EP1491296B1 EP04102594A EP04102594A EP1491296B1 EP 1491296 B1 EP1491296 B1 EP 1491296B1 EP 04102594 A EP04102594 A EP 04102594A EP 04102594 A EP04102594 A EP 04102594A EP 1491296 B1 EP1491296 B1 EP 1491296B1
Authority
EP
European Patent Office
Prior art keywords
connecting element
base plate
housing
curved section
element according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04102594A
Other languages
German (de)
English (en)
Other versions
EP1491296A1 (fr
Inventor
Helmut Burger
Matthias Doberenz
Thomas Naumann
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
Publication of EP1491296A1 publication Critical patent/EP1491296A1/fr
Application granted granted Critical
Publication of EP1491296B1 publication Critical patent/EP1491296B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25F5/008—Cooling means

Definitions

  • the invention relates to a connecting element for connecting a handle to a housing part and a transmission housing of an electric handset.
  • the connecting element has a flat base plate for partitioning the housing part and the gear housing to the handle with a first side and a second side.
  • the connecting element has at least one bushing for guiding a fastening means, wherein the at least one bushing is aligned substantially perpendicular to the plane which is spanned by the first side and / or second side of the base plate.
  • the connecting element further comprises at least one air guide element, which is arranged at an angle to the second side and has at least one bent portion, and further comprises at least one receptacle for a detent spring for a control knob for adjusting a transmission disposed in the transmission housing.
  • the individual components are assembled into modules or assemblies in separate production steps.
  • the individual modules are assembled in a further production step to the electric handset and releasably connected by means of screws.
  • the housing part has a hammer mechanism, the gear housing a gear and the handle, for example, an actuating means, for. As a switch on. At the transmission of the engine of the electric handset is arranged.
  • the cooling air flow generated by the engine or with a fan is also used to cool the percussion mechanism and routed past the transmission housing to the impact mechanism.
  • the air flow should not circulate in the handle and the user should not be disturbed when using the electric handset by a, exiting the electrical device airflow at work.
  • several elements for foreclosure and deflection within the electric handset are provided in the known solutions, which are mounted and fixed individually.
  • a base plate which in addition to the leadership of the fastening means has bushings.
  • hollow cylindrical, arranged perpendicular to the plane of the base plate dome are provided.
  • an additional element in the junction area for deflecting the air flow from the housing part is arranged. Partly must therefore be provided on the base plate or portions of the individual parts of the housing, for example, for attachment of the gear housing additional dome.
  • a control knob is provided for the arranged in the transmission housing gear on the outside of the electric handset, with which the desired translation or function of the electric handset is adjustable by the user.
  • a detent spring is threaded on the transmission housing, usually after the merger of the individual modules, after the preassembly of the shift rod of the transmission via the collar by means of an auxiliary tool or hand tool.
  • a disadvantage of the known solution is that several individual elements must be used to connect the individual modules, which require a high logistical effort and high tooling costs for their production.
  • the EP 1 157 788 A2 shows, for example, a percussion mechanism housing of an electric handset with a housing surrounding a striking mechanism and a switching arrangement for the percussion mechanism and with a central housing portion as a connecting element for connecting the percussion mechanism housing to a drive housing surrounding a rotary drive.
  • the central housing section has a flat base plate for partitioning the percussion mechanism housing to the drive housing with a first side and a second side and with four aligned perpendicular to the plane defined by the first side and the second side of the base plate passages for fastening means.
  • the central housing portion further comprises from the second, the rotary drive side facing the base plate at right angles projecting air ducting elements with a bent portion which is parallel to the second side of the base plate in a plane and extends over an angular range in a radius for guiding the den Rotary drive cooling air flow to laterally arranged outlet openings.
  • a receptacle for a detent spring for a control knob for adjusting the arranged in the striking mechanism housing switching arrangement is provided on the housing portion.
  • the object of the invention is to provide a connecting element which is compact in its construction and facilitates assembly.
  • the connecting element should be simple and inexpensive to produce.
  • the at least one bent portion of the Lwill elementsettis projects in a radius over an angular range from the second side.
  • the arrangement of the at least one air guide element on the second side of the base plate allows a compact design of the connecting element.
  • no additional part must be provided and attached, for example, to the base plate or to a housing.
  • the size of the angular range and the radius is determined by the internal dimensions of the electric handset and the dimensions and the design of the individual components adjacent to the connecting element.
  • the radius preferably has a constant value over the entire angular range. In a variant of this, the value of the radius can vary over the angular range, so that the at least one bent portion of the air guide element has, for example, an elliptical course.
  • the inventive connecting element also has a receptacle for the detent spring, whereby the detent spring can be pre-assembled captive before installation of the connecting element.
  • the detent spring has to after insertion into the receptacle preferably a bias.
  • For inserting the spring also no special tool is no longer necessary because the detent spring is simply inserted into the receptacle, for. B. pressed or pressed.
  • the bushings are preferably arranged in domes, which are preferably optimized in their dimensions such that for connecting the individual assemblies only one type of fastener, for. B. only one type of screws is used.
  • the orientation of the at least one passage in the dome preferably extends in or parallel to the longitudinal axis of the dome.
  • the connecting element is available as a separate assembly for the assembly of the electric handset, which, for example, the test of the correct installation of the detent spring is facilitated and the dimensions of this assembly is reduced compared to the known designs with individual loose and joinable in several steps elements.
  • the inventive connecting element the repair and service friendliness of the electric handset. For example, the threads in the domes at each disassembly and assembly of the electric handset, for example, certain wear and tear exposed. If the connecting element is damaged, the economically producible connecting element is replaced during repair or service. Since the connecting element combines several functions in itself, compared to the known solutions with several separate parts lower storage costs and the risk of confusion of the various parts is in disassembly or assembly, for. B. in repair and service work and the production of the electric handset prevented.
  • the inventive connecting element devices on the housings of the individual modules for mounting air guide elements or recordings for a detent spring.
  • the angular range ( ⁇ ) of the at least one bent portion of the at least one air guide element includes a range of 50 ° to 95 °, preferably from 65 ° to 80 °.
  • the air flow generated by a fan or by a motor is guided in this embodiment of the connecting element through the entire electric handset without the air flow circulating in the handle.
  • the selected angle of the angular range is primarily dependent on the orientation of the individual modules to each other and on the available dimensions in the electric handset.
  • the air guide element can be made compact in this form while ensuring optimal guidance of the air flow.
  • the in relation to the entire air guide element strongly expanding angle range is limited to the required minimum.
  • the straight portion preferably covers the area between the end of the bent portion of the air guide member to a boundary wall.
  • At least one opening is provided on the straight section or on the bent section of the air guiding element.
  • controls such as a magnetic lever can be performed by the handle on the gear housing or the housing part.
  • the connecting element has a clip mechanism for fixing the connecting element to the transmission housing.
  • the connecting element is fixed before merging the individual modules to the transmission housing and then the individual modules are connected to each other, for example screwed.
  • the clip mechanism has z. B. on the gear housing cams, which engage in corresponding recesses formed on the cam on the connecting element.
  • the gear housing is provided with recesses into which engage on the connecting element projecting cams.
  • the receptacle for the detent spring is substantially bow-shaped and aligned substantially perpendicular to the plane which is spanned by the first side and / or the second side of the base plate.
  • the ends of the detent spring are preferably designed such that they are held in the free ends of the bow-shaped design.
  • a conventional arrangement of the individual modules to each other is arranged with the, substantially perpendicular to the plane of the base plate receiving the arrangement of the control knob side of the electric handset, which ensures a high ease of use of the control knob.
  • the bow-shaped receptacle is preferably at least partially on the at least one bent portion of the Lwill outselements. This makes it possible to realize a compact design of the connecting element.
  • the connecting element is made of plastic, in particular in an injection molding process.
  • the inventive connecting element can be significantly cheaper and thus produce more economical than is possible with the previous versions.
  • FIG. 1 and Fig. 2 is in each case a perspective view of a portion of the electric handset with a first embodiment of the inventive connecting element shown from two different angles.
  • a hammer drill 1 Between the housing part 2 and the handle 3, the inventive connecting element 4 is arranged, which was previously clipped onto the transmission housing 5.
  • the domes 6.1 and 6.2 on the connecting element 4 are designed such that the same screws for connecting the individual modules can be used by them as well as by the domes 7.1 and 7.2.
  • the side of the rotary hammer 1 arranged control knob 8 for adjusting the various functions of the hammer drill 1 is shown.
  • a generated by the motor, not shown here and moving in the direction of arrow 9 air flow is deflected by the connecting element 4 in the direction of the housing part 2, without the air flow in the handle 3 can circulate.
  • the connecting element 4 in particular from the Fig. 3 and the Fig. 4 can be seen, comprises a base plate 11 having a first side 12 and a second side 13. From the second side 13 of the base plate 11 extend perpendicular to the plane of the second side 13, the dome 6.1 and 6.2.
  • the domes 6.1 and 6.2 have a hollow cylindrical configuration and have inside each a bushing 10.1, 10.2 with a thread for receiving the screws, not shown here.
  • the connecting element 4 also has a serving as a reinforcement and mounting aid projection 14 which rests after assembly on the transmission housing 5 at this and this includes partially.
  • the air guide elements 15.1 and 15.2 each have a bent portion 22.1 or 22.2, which is bent in each case over an angular range ( ⁇ ) of 75 ° in a constant radius R.
  • ⁇ angular range
  • At the end of 16.1, or 16.2 of the bent portions 22.1, 22.2 of the air guide elements 15.1 and 15.2 is followed in each case by a straight section 17.1 or 17.2.
  • the straight section 17.1 is with a breakthrough 18 for a Magnet lever provided which penetrates the opening 18 after joining all components of the hammer drill 1.
  • reinforcements 21 .1 and 21.2 are formed on both sides.
  • an opening 25 is provided as a counter-locking means for a, existing on the transmission housing 5, designed as a locking means cam.
  • the locking means and the counter-locking means together form the clip mechanism for fixing the connecting element 4 to the transmission housing 5.
  • a bow-shaped receptacle 23 for the arrangement of a detent spring 24 is provided, which abuts against the bent portion 22.1 of the air guide element 15.1, or conforms to the bent portion 22.1.
  • the bow-shaped receptacle 23 is interrupted in this embodiment of the opening 25.
  • the free end 26.1 and the free end 26.2 of the receptacle 23 each form a hook, in each of which one end of the detent spring 24 is held securely after insertion into the receptacle 23. Due to the design of the detent spring 24, this has a bias in the mounted state. Thus, the detent spring 24 can be inserted before the fixing of the connecting element 4 to the transmission housing 5 and the merging of the individual components of the hammer drill 1 in the receptacle 23 and their seat to be controlled.
  • FIG. 5 A side view of the second embodiment of the inventive connecting element is in the Fig. 5 shown.
  • the connecting element 31 corresponds to the embodiment of the inventive connecting element 4, which in the Fig. 1 to 4 has been described.
  • the one free end 33 of the bow-shaped receptacle 32 is formed directly on the bent portion 36.1 of the air guide element 34.1, whereby the bow-shaped receptacle 32 of the connecting element 31 in the direction of the double arrow 35 can be formed shorter than the bow-shaped receptacle 23 of the connecting element 4.
  • the connecting element according to the invention simplifies the assembly of electrical hand tools and reduces the costs for its manufacture and for the logistics compared to the known solutions.
  • the repair and service friendliness of the electric handset is significantly improved with the inventive connecting element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Telephone Set Structure (AREA)
  • Drilling And Boring (AREA)
  • Portable Power Tools In General (AREA)

Claims (9)

  1. Élément de liaison (4 ; 31) pour relier une poignée (3) à une partie de carter (2) et à un carter de transmission (5) d'un appareil portatif électrique, comme d'un marteau perforateur (1), comprenant une plaque de base plane (11) pour isoler la partie de carter (2) et le carter de transmission (5) par rapport à la poignée (3), avec un premier côté (12) et un second côté (13), et avec au moins une traversée (10.1, 10.2) pour guider un moyen de fixation, la traversée au nombre d'au moins une (10.1, 10.2) étant orientée sensiblement perpendiculairement au plan défini par le premier côté (12) et/ou le second côté (13) de la plaque de base (11), l'élément de liaison (4 ; 31) comprenant également au moins un élément de guidage d'air (15.1, 15.2 ; 34.1) qui est disposé selon un angle par rapport au second côté (13) et comporte au moins une portion courbe (22.1, 22.2 ; 36.1) et également au moins un logement (23 ; 32) pour le ressort de crantage (24) d'un bouton de commande (8) destiné à régler une transmission disposée dans le carter de transmission (5), caractérisé en ce que la portion courbe au nombre d'au moins une (22.1, 22.2 ; 36.1) dépasse du second côté (13) avec un rayon (R) sur une zone angulaire (α).
  2. Élément de liaison selon la revendication 1, caractérisé en ce que la zone angulaire (α) de la portion courbe au nombre d'au moins une (22.1, 22.2 ; 36.1) de l'élément de guidage d'air (15.1, 15.2 ; 34.1) couvre une zone de 50° à 95°, de préférence de 65° à 80°.
  3. Élément de liaison selon la revendication 1 ou 2, caractérisé en ce qu'une portion rectiligne (17.1, 17.2) se raccorde à l'extrémité libre (16.1, 16.2) de la portion courbe au nombre d'au moins une (22.1, 22.2) de l'élément de guidage d'air au nombre d'au moins un (15.1, 15.2).
  4. Élément de liaison selon la revendication 3, caractérisé en ce qu'au moins un passage (18) est prévu dans la portion rectiligne (17.1, 17.2) ou dans la portion courbe (22.1, 22.2) de l'élément de guidage d'air (15.1, 15.2).
  5. Élément de liaison selon une des revendications 1 à 4, caractérisé en ce que l'élément de liaison (4 ; 31) comporte un mécanisme de clipsage pour assujettir l'élément de liaison (4 ; 31) au carter de transmission (5).
  6. Élément de liaison selon une des revendications 1 à 5, caractérisé en ce que le logement (23 ; 32) pour le ressort de crantage (24) est conformé sensiblement en étrier et est orienté sensiblement perpendiculairement au plan défini par le premier côté (12) et/ou par le second côté (13) de la plaque de base (11).
  7. Élément de liaison selon la revendication 6, caractérisé en ce que le logement en forme d'étrier (23 ; 32) est appliqué au moins par endroits contre la portion courbe (22.1, 22.2 ; 36.1) de l'élément de guidage d'air (15.1 ; 34.1).
  8. Élément de liaison selon la revendication 6, caractérisé en ce qu'au moins une partie du logement en forme d'étrier (32) est formée par endroits par la portion courbe (36.1) de l'élément de guidage d'air (34.1).
  9. Élément de liaison selon une des revendications 1 à 8, caractérisé en ce que l'élément de liaison (4 ; 31) est réalisé en matière plastique, en particulier par un procédé de moulage par injection.
EP04102594A 2003-06-12 2004-06-08 Elément de raccord Expired - Lifetime EP1491296B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10326472 2003-06-12
DE10326472A DE10326472B4 (de) 2003-06-12 2003-06-12 Verbindungselement zum Verbinden eines Handgriffs mit einem Gehäuseteil und einem Getriebegehäuse eines Elektrohandgeräts

Publications (2)

Publication Number Publication Date
EP1491296A1 EP1491296A1 (fr) 2004-12-29
EP1491296B1 true EP1491296B1 (fr) 2008-03-26

Family

ID=33394816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04102594A Expired - Lifetime EP1491296B1 (fr) 2003-06-12 2004-06-08 Elément de raccord

Country Status (5)

Country Link
US (1) US6957706B2 (fr)
EP (1) EP1491296B1 (fr)
JP (1) JP4504107B2 (fr)
CN (1) CN100396445C (fr)
DE (2) DE10326472B4 (fr)

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GB2385017B (en) * 2002-02-08 2005-06-29 Black & Decker Inc Drilling and/or hammering tool
EP1674213B1 (fr) * 2004-12-23 2008-10-01 BLACK & DECKER INC. Outil motorisé avec un dispositif de refroidissement
EP1674211A1 (fr) * 2004-12-23 2006-06-28 BLACK & DECKER INC. Carter pour un outil motorisé
DE102006029630A1 (de) * 2006-06-28 2008-01-03 Robert Bosch Gmbh Handwerkzeugmaschine
US7854274B2 (en) 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US7717191B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
US7798245B2 (en) 2007-11-21 2010-09-21 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
US9592600B2 (en) 2011-02-23 2017-03-14 Ingersoll-Rand Company Angle impact tools
US8925646B2 (en) 2011-02-23 2015-01-06 Ingersoll-Rand Company Right angle impact tool
US9431137B2 (en) * 2011-06-14 2016-08-30 Analysis And Measurement Services Corporation Systems and methods of monitoring control rods of a nuclear power plant
CN205609608U (zh) 2012-06-12 2016-09-28 米沃奇电动工具公司 电池组
US9022888B2 (en) 2013-03-12 2015-05-05 Ingersoll-Rand Company Angle impact tool

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1157788A2 (fr) * 2000-04-07 2001-11-28 Black & Decker Inc. Mécanisme de changement de mode de fonctionnement pour marteau rotatif

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GB2232372A (en) * 1989-05-25 1990-12-12 Black & Decker Inc Improvements in or relating to power tools
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JP2000042948A (ja) * 1998-07-24 2000-02-15 Ryobi Ltd 電動工具
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DE19924552A1 (de) * 1999-05-28 2000-11-30 Hilti Ag Elektrisch betreibbares Handgerät
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JP2002283254A (ja) * 2001-01-19 2002-10-03 Hitachi Koki Co Ltd 衝撃工具
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EP1302281B1 (fr) * 2001-10-15 2007-05-02 HILTI Aktiengesellschaft Conduit d'air de refroidissement d'un outil de percussion
JP4485190B2 (ja) * 2003-12-26 2010-06-16 株式会社マキタ 電動ハンマ

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1157788A2 (fr) * 2000-04-07 2001-11-28 Black & Decker Inc. Mécanisme de changement de mode de fonctionnement pour marteau rotatif

Also Published As

Publication number Publication date
US20040251039A1 (en) 2004-12-16
JP2005001106A (ja) 2005-01-06
DE502004006636D1 (de) 2008-05-08
CN100396445C (zh) 2008-06-25
US6957706B2 (en) 2005-10-25
JP4504107B2 (ja) 2010-07-14
EP1491296A1 (fr) 2004-12-29
CN1572434A (zh) 2005-02-02
DE10326472A1 (de) 2005-01-05
DE10326472B4 (de) 2006-03-09

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