EP4005447A1 - Dispositif d'aspiration pour un marteau de démolition - Google Patents

Dispositif d'aspiration pour un marteau de démolition Download PDF

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Publication number
EP4005447A1
EP4005447A1 EP20209695.4A EP20209695A EP4005447A1 EP 4005447 A1 EP4005447 A1 EP 4005447A1 EP 20209695 A EP20209695 A EP 20209695A EP 4005447 A1 EP4005447 A1 EP 4005447A1
Authority
EP
European Patent Office
Prior art keywords
suction
demolition
suction device
dome
chisel
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Withdrawn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
EP20209695.4A
Other languages
German (de)
English (en)
Inventor
Peter Gerold
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 EP20209695.4A priority Critical patent/EP4005447A1/fr
Priority to EP21810312.5A priority patent/EP4251021A1/fr
Priority to CN202180072664.7A priority patent/CN116437844B/zh
Priority to PCT/EP2021/081055 priority patent/WO2022111986A1/fr
Priority to US18/035,243 priority patent/US20230414048A1/en
Publication of EP4005447A1 publication Critical patent/EP4005447A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0095—Suction cleaners or attachments adapted to collect dust or waste from power tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A47L9/248—Parts, details or accessories of hoses or pipes

Definitions

  • the present invention relates to a suction device for a demolition hammer, the demolition hammer having a housing and a tool holder for receiving a demolition chisel.
  • the suction device is equipped with a flexible suction hose at the free end of which a suction body is connected. Dust can be sucked out of a working area of the demolition chisel via the suction body.
  • suction devices are basically known from the prior art.
  • an absorbent body in the form of a suction sleeve is used, which is slipped over the demolition chisel.
  • the suction device has a fastening element, by means of which the suction hose can be attached to the housing of the demolition hammer at a fastening point of the suction hose spaced apart from the free end, so that the suction body can be attached during suction operation, in particular in the radial direction with respect to the Demolition chisel can be pivoted freely. It has turned out to be advantageous if the attachment point of the suction hose defines a pivot point about which the suction hose together with the suction body can be pivoted.
  • an improved suction device is provided according to the invention, the suction body of which can be pivoted freely at least in the radial direction with respect to the demolition chisel during suction operation.
  • This has the decisive advantage of an unobstructed view at all times the demolition chisel is possible, which is particularly important with heavy demolition hammers.
  • the possibility of pivoting the suction body relative to the demolition chisel also prevents the suction body from slipping axially relative to the demolition chisel or even being destroyed. It has turned out to be practically impossible to jam the suction body on an edge or in the overburden when chiseling. As a result, a continuous suction of dust from the working area of the demolition chisel - and thus also the health of the user - is guaranteed at all times.
  • the fastening element is designed as a clip clip (spring clip).
  • the clamp bracket has an eyelet which is designed to preferably completely clamp around the suction hose.
  • a diameter of the eyelet can be expanded by manual operation, preferably in such a way that the eyelet can be displaced along a length of the suction hose.
  • the position, in particular the axial position, of the suction body can be changed relative to the demolition chisel. In this way, the position of the suction body can easily be tracked as the demolition chisel wears down. It has proven to be advantageous if manual actuation takes place against a spring preload applied by the clamp bracket.
  • the clamp bracket has two retaining arms.
  • the holding arms are designed to engage in two assembly openings in the housing of the demolition hammer.
  • a mounting opening can be a recess in the housing, for example, in which, for example, a housing screw is countersunk.
  • the spring preload already described, which is applied by the clamp bracket serves to hold the holding arms in the respective assembly opening.
  • a further fastening element designed as a clamp bracket is provided.
  • the suction body has a suction dome.
  • the suction dome may include a suction slot extending axially along the suction dome.
  • the suction slot opens into a suction channel located inside the suction cupola. It has turned out to be advantageous if the suction cupola has several suction slots.
  • the suction slots are arranged at equal distances from one another along a circumferential direction of the suction dome.
  • each of the suction slots opens into a respective suction channel.
  • the suction body has a carrier piece to which the suction hose on the one hand and the suction dome on the other hand can be attached. It has turned out to be advantageous if the suction channels in turn open into a connection area of the carrier piece. In a particularly preferred embodiment, the connection area of the carrier piece opens into the suction hose. It has proven to be advantageous if the carrier piece has a plurality of latching lugs which are arranged at equal distances from one another along the circumferential direction of the carrier piece. The carrier piece can be releasably connected to the suction cupola by means of the locking lugs.
  • the carrier piece has an internal thread into which the suction hose can be screwed.
  • the suction cupola and the carrier piece are joined together, for example by means of a press fit.
  • the suction dome and the carrier piece are designed as different components.
  • the suction dome and the carrier piece can be provided in one piece, for example by means of an additive manufacturing process. It has turned out to be advantageous if the suction body does not enclose the demolition chisel during intended suction operation.
  • the invention is also achieved through the use of a suction device of the type described above for sucking dust from a working area of a demolition chisel accommodated in a tool holder of a demolition hammer.
  • An object that can be protected independently is a suction device for an electric hand-held power tool, the electric hand-held power tool having a housing and a tool holder for holding a tool, the suction device having a flexible suction hose with a suction body connected to its free end, via which dust from a work area is removed of the tool is to be sucked off, and wherein the suction device has a fastening element, by means of which the suction hose can be attached to the housing of the electric hand-held power tool at a fastening point of the suction hose spaced apart from the free end, so that the suction body can be attached at least in the radial direction with respect to suction operation of the tool can be pivoted freely.
  • a first preferred exemplary embodiment of a suction device 100 according to the invention is 1 shown.
  • the suction device 100 is arranged on a heavy demolition hammer 200.
  • the demolition hammer 200 can also be referred to as a chisel hammer or floor breaker.
  • the demolition hammer 200 has a housing 210 and a tool holder 220 .
  • a demolition chisel 250 is located in the tool holder 220 for chiseling work along the axial direction AR.
  • the suction device 100 has a flexible suction hose 10 with a diameter of about 35 mm.
  • An absorbent body 20 is connected to a free end 11 of the suction hose 10 . Dust can be sucked out of a working area AB of the demolition chisel 250 via the suction body 20 and the suction hose 10 . This, for example, by means of a construction site vacuum, not shown here.
  • the suction device 100 has a fastening element 30 by means of which the suction hose 10 is attached to the housing 210 of the demolition hammer 200 .
  • the fastening element 30 is attached to a fastening point 13 of the suction hose 10 which is at a distance from the end 11 of the suction hose 10 .
  • the suction body 20 can be pivoted freely at least in the radial direction RR with respect to the demolition chisel 250 during suction operation.
  • This has the distinct advantage that a clear view of the demolition chisel 250 is possible at all times, which is particularly the case with the heavy demolition hammer 200 of 1 important is.
  • the attachment point 13 defines a pivot point SP about which the suction hose 10 together with the suction body 20 can be pivoted.
  • the assembly openings 211 are a recess in the housing 210 in which a housing screw is countersunk.
  • the suction body 20 has a suction dome 21 which has at least one suction slot 23 which extends along the suction dome 21 in the axial direction AR.
  • the fastening element 30 is designed as a clip bracket 31 .
  • Figure 2A shows a plan view of the clip bracket 31 (view from "above” in the axial direction AR in 1 ).
  • Figure 2B is a side view of the clip bracket 31, in Figure 2C a perspective view is shown.
  • the circular eyelet 33 of the clamp bracket 31 is designed to hold the suction hose 10 (cf. 1 ) to embrace completely.
  • the diameter DM of the eyelet 33 is 35 mm, for example, and is matched to a diameter of the suction hose 10 .
  • the eyelet 33 of the clamp bracket 31 extends into a holding arm 35 on each side.
  • the holding arms are intended to engage in two assembly openings 211 in the housing 210 of the demolition hammer 200 (cf. 1 ).
  • the eyelet 33 can be activated by a manual operating force HF (thick solid arrows in Figure 2A ) expandable.
  • the "pressed" eyelet 33 expanded to a diameter DM of 45 mm, for example, can be displaced along the suction hose as desired.
  • the manual operating force HF is counteracted against a preload force VF (thick dashed arrows in Figure 2A ) upset.
  • the clip bracket 31, which can be bent in one piece from spring steel, for example, is technically sophisticated, simple and comparatively inexpensive to produce.
  • In 3 is the proportionate suction device 100 of 1 shown, the suction hose 10 being held with an additional fastening element 30' which engages in a further mounting opening 211' on the housing 210.
  • the additional fastening element 30' is structurally identical to the fastening element 30. However, the additional fastening element 30' does not define an additional pivot point for the suction hose 10, but only serves to (additionally) secure the suction hose 10 on the housing 210.
  • the suction body 20 is constructed in two parts, for example, and has a suction cupola 21 and a support piece 27.
  • the suction dome 21 has a plurality of suction slots 23 which are arranged at equal distances from one another along a circumferential direction UR of the suction dome 21 . Dust can be sucked off via these suction slots 23 . Comparatively large fragments cannot pass through these suction slots 23.
  • the suction cupola 21 has a plurality of suction recesses 24, which in turn are arranged at equal distances from one another along the circumferential direction UR of the suction cupola 21.
  • the support piece 27 can be releasably connected to the suction dome 21 by means of the latching lugs 26 .
  • the suction body 20 formed by the suction dome 21 and the carrier piece 27 does not enclose the demolition chisel 250 in the intended suction operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
EP20209695.4A 2020-11-25 2020-11-25 Dispositif d'aspiration pour un marteau de démolition Withdrawn EP4005447A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20209695.4A EP4005447A1 (fr) 2020-11-25 2020-11-25 Dispositif d'aspiration pour un marteau de démolition
EP21810312.5A EP4251021A1 (fr) 2020-11-25 2021-11-09 Dispositif d'aspiration pour marteau de démolition
CN202180072664.7A CN116437844B (zh) 2020-11-25 2021-11-09 用于爆破锤的抽吸装置
PCT/EP2021/081055 WO2022111986A1 (fr) 2020-11-25 2021-11-09 Dispositif d'aspiration pour marteau de démolition
US18/035,243 US20230414048A1 (en) 2020-11-25 2021-11-09 Suction-extraction device for a demolition hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20209695.4A EP4005447A1 (fr) 2020-11-25 2020-11-25 Dispositif d'aspiration pour un marteau de démolition

Publications (1)

Publication Number Publication Date
EP4005447A1 true EP4005447A1 (fr) 2022-06-01

Family

ID=73597872

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20209695.4A Withdrawn EP4005447A1 (fr) 2020-11-25 2020-11-25 Dispositif d'aspiration pour un marteau de démolition
EP21810312.5A Pending EP4251021A1 (fr) 2020-11-25 2021-11-09 Dispositif d'aspiration pour marteau de démolition

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP21810312.5A Pending EP4251021A1 (fr) 2020-11-25 2021-11-09 Dispositif d'aspiration pour marteau de démolition

Country Status (4)

Country Link
US (1) US20230414048A1 (fr)
EP (2) EP4005447A1 (fr)
CN (1) CN116437844B (fr)
WO (1) WO2022111986A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023115310A1 (de) * 2022-07-08 2024-01-11 Makita Corporation Arbeitsmaschine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2705409A1 (de) * 1977-02-09 1978-08-10 Bosch Gmbh Robert Bohrwerkzeug
DE4313658C1 (de) * 1993-04-20 1994-06-23 Wecker Detlef F B Vorrichtung zur Absaugung von zerspanten Holz- oder Kunststoffmaterialien an Bohr- oder Fräsmaschinen
US20020154960A1 (en) * 2001-04-19 2002-10-24 Lin Sheng Chieh Power drill with vacuum dust-collection ability
DE20220389U1 (de) * 2002-12-13 2003-08-21 Layer, Alexey, 76131 Karlsruhe Absaugvorrichtung
EP2732914A1 (fr) * 2012-11-19 2014-05-21 Makita Corporation Dispositif de collecte de poussière et outil électrique ayant le même
FR3005883A1 (fr) * 2013-05-27 2014-11-28 Illinois Tool Works Dispositif d'enlevement de matiere comportant un outil a moteur deporte
US20150040341A1 (en) * 2013-08-09 2015-02-12 Robert Bosch Gmbh Hand-Held Power Tool Suction Extractor Apparatus
DE102014212398A1 (de) * 2014-06-27 2015-12-31 Robert Bosch Gmbh Werkzeugmaschinenschlauchhaltevorrichtung
US20180117723A1 (en) * 2016-10-30 2018-05-03 Jesse Boswell Dust extraction attachment for rotary tool
EP3431227A1 (fr) * 2017-07-17 2019-01-23 Tobias Riß Machine-outil à main pouvant être raccordée à un dispositif d'aspiration

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860182C2 (de) * 1998-12-24 2002-03-07 Bosch Gmbh Robert Absaugeinrichtung für eine Handwerkzeugmaschine, insbesondere einen Bohrhammer
DE102008022321A1 (de) * 2008-04-30 2009-11-05 Alfred Kärcher Gmbh & Co. Kg Staubsauger
DE102013102726A1 (de) * 2012-04-24 2013-10-24 Vorwerk & Co. Interholding Gmbh Saugvorsatz für einen Staubsauger oder Staubsauger mit einem Saugvorsatz sowie Akku-Staubsauger
CN205117253U (zh) * 2015-08-28 2016-03-30 周煜 真空旋振泥浆固相控制装置
WO2017108089A1 (fr) * 2015-12-21 2017-06-29 Alfred Kärcher Gmbh & Co. Kg Buse d'aspiration pour un appareil de nettoyage de surface dures et appareil de nettoyage de surfaces dures comportant une telle buse d'aspiration
EP3269504A1 (fr) * 2016-07-15 2018-01-17 HILTI Aktiengesellschaft Capot d'aspiration pour machine-outil
CN108392134A (zh) * 2017-02-08 2018-08-14 株式会社牧田 吸尘器
US10357862B2 (en) * 2017-02-20 2019-07-23 G. A. W. Inc. Pneumatically operated percussive tool driver with integral debris suction apparatus
DE102017115653A1 (de) * 2017-07-12 2019-01-17 Festool Gmbh Saugschlauch für einen Staubsauger
US20200215653A1 (en) * 2019-01-08 2020-07-09 Inter-Source Recovery Systems Sweeper Accessory for Use with a Pneumatic Chip Collector
WO2020226999A1 (fr) * 2019-05-03 2020-11-12 Seimears Jerry Collier de serrage à ressort ayant une capacité d'installation et de retrait
US11607101B2 (en) * 2019-08-05 2023-03-21 Bissell Inc. Vacuum cleaner accessory tool

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2705409A1 (de) * 1977-02-09 1978-08-10 Bosch Gmbh Robert Bohrwerkzeug
DE4313658C1 (de) * 1993-04-20 1994-06-23 Wecker Detlef F B Vorrichtung zur Absaugung von zerspanten Holz- oder Kunststoffmaterialien an Bohr- oder Fräsmaschinen
US20020154960A1 (en) * 2001-04-19 2002-10-24 Lin Sheng Chieh Power drill with vacuum dust-collection ability
DE20220389U1 (de) * 2002-12-13 2003-08-21 Layer, Alexey, 76131 Karlsruhe Absaugvorrichtung
EP2732914A1 (fr) * 2012-11-19 2014-05-21 Makita Corporation Dispositif de collecte de poussière et outil électrique ayant le même
FR3005883A1 (fr) * 2013-05-27 2014-11-28 Illinois Tool Works Dispositif d'enlevement de matiere comportant un outil a moteur deporte
US20150040341A1 (en) * 2013-08-09 2015-02-12 Robert Bosch Gmbh Hand-Held Power Tool Suction Extractor Apparatus
DE102014212398A1 (de) * 2014-06-27 2015-12-31 Robert Bosch Gmbh Werkzeugmaschinenschlauchhaltevorrichtung
US20180117723A1 (en) * 2016-10-30 2018-05-03 Jesse Boswell Dust extraction attachment for rotary tool
EP3431227A1 (fr) * 2017-07-17 2019-01-23 Tobias Riß Machine-outil à main pouvant être raccordée à un dispositif d'aspiration

Also Published As

Publication number Publication date
CN116437844A (zh) 2023-07-14
CN116437844B (zh) 2025-11-04
EP4251021A1 (fr) 2023-10-04
WO2022111986A1 (fr) 2022-06-02
US20230414048A1 (en) 2023-12-28

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