EP3842187A1 - Dispositif de raccordement d'un câble - Google Patents

Dispositif de raccordement d'un câble Download PDF

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Publication number
EP3842187A1
EP3842187A1 EP20212962.3A EP20212962A EP3842187A1 EP 3842187 A1 EP3842187 A1 EP 3842187A1 EP 20212962 A EP20212962 A EP 20212962A EP 3842187 A1 EP3842187 A1 EP 3842187A1
Authority
EP
European Patent Office
Prior art keywords
electronics unit
housing element
power cable
clamping
power
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.)
Granted
Application number
EP20212962.3A
Other languages
German (de)
English (en)
Other versions
EP3842187B1 (fr
Inventor
Matthias Hiller
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP3842187A1 publication Critical patent/EP3842187A1/fr
Application granted granted Critical
Publication of EP3842187B1 publication Critical patent/EP3842187B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25F5/02—Construction of casings, bodies or handles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5213—Covers

Definitions

  • the invention relates to a device for connecting a power cable to an electronic unit of a power tool, with at least one clamping device for clamping a connection line of the power cable, according to the type defined in more detail in the preamble of claim 1.
  • the invention also relates to a power tool.
  • a generic device is from the DE 10 2006 022 996 A1 known.
  • the DE 20 2016 106 821 U1 describes a mains connection system for a power tool, which has a plug connection with a device socket and a device plug, so that in the event of a defect in a power line, it can be easily replaced.
  • a mains-operated hand-held power tool with a housing from which a mains cable extends to a power connection is known.
  • a mounting opening of the housing that can be closed by an assembly cover is provided, through which the connecting means and fixing means can be displaced from the interior of the housing. Cable-side strands of the mains cable can be electrically connected to device-side strands of a device cabling via the connecting means.
  • the EP 2 384 855 B1 describes an angle grinder with a housing in which a motor and a switch block, which has a switch and a controller for controlling the motor, are arranged.
  • FIG DE 10 2004 051 653 A1 A hand-held electric power tool with a switch having a coupling for releasable mechanical and simultaneous electrical contact with an electronics module is shown in FIG DE 10 2004 051 653 A1 described.
  • the connecting element establishes a connection between the clamping device and the contact device and thus ultimately between the connection line and the electronics unit, which results in simple and reliable contacting.
  • the connecting element runs through an opening in a housing element which spatially separates the clamping device from the electronics unit.
  • spatially separating means that the housing element is located between the clamping device used to clamp the connection line of the power cable and the electronics unit, so that the clamping device and the electronics unit are located in two different areas or rooms within a housing.
  • the sealing device supports this spatial separation between the clamping device and the electronics unit by sealing the opening through which the connecting element passes.
  • the housing element in cooperation with the sealing device, shields the electronics unit and the part of the contact device that is located in the area of the electronics unit from the clamping device, so that dust or other contamination that may be in the area of the electronics unit is not can get into the area of the clamping device. In this way, the service person changing the power cord also has no access to the electronics unit, so that when the power cord is replaced, the electronics unit cannot be damaged or otherwise negatively influenced.
  • the device according to the invention is suitable for power tools that are driven by means of a brushless electric motor, since with such power tools changing the power cord is the most frequent service case.
  • the opening is sealed by means of a sealing device resting on the connecting element, the ingress of contamination from the area in which the electronics unit is located into the area in which the connection line is located is reliably prevented.
  • a very simple and inexpensive design of the sealing device is obtained when it is formed in one piece with the housing element and has a considerably smaller wall thickness than the housing element.
  • the sealing device is designed as a sealing lip running around the opening of the housing element, a very simple and inexpensive but nevertheless reliable seal between the clamping device and the electronics unit is ensured.
  • the housing element is designed at least in sections as the floor of a power cord changing area.
  • the power cable replacement area can be closed by means of a removable cover, the area in which the power cable is connected is very well encapsulated and, on the other hand, very easy access to this power cable replacement space is possible by removing the cover.
  • the sealing of the power cord changing space can be improved if the cover can be sealed off from the housing element by means of a tongue and groove connection.
  • a strain relief device can be provided with which a sheathing of the power cable can be clamped.
  • a strain relief device ensures that when a tensile force is applied to the power cord, little or no force is applied to the connection line, so that its connection to the clamping device is guaranteed.
  • a very reliable contacting of the connection line via the clamping device and the contact device with the electronics unit results when the contact device has a metallic contact element.
  • Claim 10 specifies a power tool with a power cable, with an electronics unit and with a device according to the invention for connecting the power cable to the electronics unit.
  • Figure 1 shows part of a power tool 1, in the present case an angle grinder.
  • the power tool 1 has a housing 2 to which a power cord 3 leads for the electrical supply of the power tool 1. From the power cord 3 is in Figure 1 a casing 4 located outside the housing 2 of the power tool 1 is shown. Furthermore, the housing 2 of the power tool 1 has a cover 5 which is screwed to the housing 2 and can be removed from the same. To connect the cover 5 to the housing 2, screws (not shown) are used, which are passed through through bores 6 in the cover 5.
  • FIG. 2 is the in Figure 1 The part of the power tool 1 shown without the cover 5 is shown.
  • the electronics unit 9 or a circuit board thereof is shown in FIG Figure 4 shown schematically.
  • the device 8 described below can also be used for other power tools 1, with angle grinders usually being exposed to very high levels of dust during operation. The device 8 ensures that these dust loads do not have a negative influence on the operation of the power tool 1.
  • the device 8 has at least one, in the present case two clamping devices 10 for clamping respective connecting lines 11 of the power cable 3 and one Contact device 12 for establishing electrical contact between the connecting line 11 clamped by means of the clamping device 10 and the electronics unit 9.
  • the clamping device 10 has respective screws 13 which engage in threads, not shown, of the clamping device 10.
  • the contact device 12 has a metallic contact element 12 a, which is in electrical contact with the connecting line 11 via the screw 13.
  • the clamping devices 10 and the contact devices 12 are each arranged individually on a respective connecting element 14 which runs through a respective opening 15 in a housing element 16 which separates the clamping device 10 from the contact device 12.
  • the housing 2 also has a lower housing element 19, which forms the largest part of the housing 2.
  • the connection between the housing element 16, which in this case can also be referred to as the upper housing element 16, and the lower housing element 19 can take place in a manner known per se.
  • the housing element 16, through the openings 15 of which the two connecting elements 14 run, is designed, at least in sections, as the bottom of the power cable changing space 7 or has a section forming the bottom of the power cable changing space 7. While in the present case the floor of the power cord exchange space 7 is formed in one piece with the housing element 16, it is basically also conceivable to design the floor separately from the housing element 16, for example in the manner of an insert, and to connect it firmly to the same, e.g. via a groove Spring connection. In this case, the bottom nevertheless forms a housing element of the housing 2.
  • the housing element 16 or the floor of the power cable exchange space 7 thus separates the clamping device 10, to which the connecting lines 11 of the power cable 3 are connected, from the electronics unit 9 and from the area in which the contact device 12 is connected to the electronics unit 9.
  • the connecting elements 14 can also be referred to as domes, since they protrude upward from the electronics unit 9 through the housing element 16 into the power cord changing space 7.
  • the opening 15 is inserted into the connecting element 14 by means of a Figures 5 and 6 sealing device 20 shown sealed.
  • the sealing device 20 is designed in one piece with the housing element 16 and has a considerably smaller wall thickness than the housing element 16.
  • the sealing device 20 is a sealing lip which runs around the opening 15 of the housing element 16, through which the connecting device 14 is passed during assembly. Sealing lips of this type can be injection-molded onto the housing element 16 by means of injection molding when the housing element 16 is produced, and can thus be formed in one piece with the same. This is a very reliable production of the sealing device 20.
  • the thin material of this sealing lip is displaced by the connecting element 14 during assembly, so that the sealing device 20 rests against the connecting element 14 without any gaps and seals the opening 15.
  • FIGS. 5 and 6 show an embodiment of the sealing device 20 in the form of a sealing lip
  • FIG. 5 and 6 show an embodiment of the sealing device 20 in the form of a sealing lip
  • FIG. 5 and 6 show an embodiment of the sealing device 20 in the form of a sealing lip
  • very precise tolerances in the manufacture of the housing element 16 and in particular its openings 15 as well as in the manufacture of the connecting element 14 can produce a certain oversize of the connecting element 14 relative to the opening 15, so that when the connecting element 14 is inserted into the opening 15, they interact the respective, preferably elastic materials of the housing element 16 and the connecting element 14, for example suitable plastic materials, sets a sealing effect.
  • Such a solution is also regarded as a sealing device 20, since it is able to seal the opening 15 in such a way that no dirt, dust or the like from the area or room in which the electronics unit 9 is located in the power cord replacement space 7 can reach.
  • sealing device 20 and the housing element 16 in the form of a two-component design, in which, for example, the sealing device 20 is placed in an injection mold with which the housing element 16 is produced.
  • the housing element 16 can optionally have a groove into which the sealing device 20 is inserted in the form of a blank.
  • Another possibility is to arrange the sealing device 20 on the connecting element 14 so that the opening 15 is sealed when the connecting element 14 is inserted into the same.
  • the cover 5 is sealed off from the housing element 16 by means of a tongue and groove connection 17.
  • the housing element 16 has a groove 16a into which a tongue 5a of the cover 5 engages.
  • the cover 5 has no air slots or the like, so that no dust can penetrate into the power cord changing space 7.
  • a strain relief device 18 is also provided, which has a clamp 18a for clamping the sheath 4 of the power cable 3 and a screw 18b for fastening the clamp 18a.
  • the sheathing of the power cable 3 can be clamped with the strain relief device 18 so that a tensile force acting on the power cable 3 is absorbed by the strain relief device 18 and the connection lines 11 clamped by the clamping device 10 cannot loosen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
EP20212962.3A 2019-12-12 2020-12-10 Dispositif de raccordement d'un câble Active EP3842187B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019134135.3A DE102019134135A1 (de) 2019-12-12 2019-12-12 Vorrichtung zur Verbindung eines Netzkabels

Publications (2)

Publication Number Publication Date
EP3842187A1 true EP3842187A1 (fr) 2021-06-30
EP3842187B1 EP3842187B1 (fr) 2024-08-14

Family

ID=73792987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20212962.3A Active EP3842187B1 (fr) 2019-12-12 2020-12-10 Dispositif de raccordement d'un câble

Country Status (3)

Country Link
US (1) US11387599B2 (fr)
EP (1) EP3842187B1 (fr)
DE (1) DE102019134135A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4223457A1 (fr) 2022-02-02 2023-08-09 C. & E. Fein GmbH Boitier pour une machine-outil portative électrique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115592622A (zh) * 2021-07-08 2023-01-13 南京泉峰科技有限公司（Cn） 电动工具
DE102021118094A1 (de) * 2021-07-13 2023-01-19 Te Connectivity Germany Gmbh Gehäusekappe und Gehäuse für eine elektrische Verbindungsanordnung sowie elektrische Verbindungsanordnung
CN219739372U (zh) * 2023-03-27 2023-09-22 长春捷翼汽车科技股份有限公司 一种便于更换线缆的充电座

Citations (13)

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DE10005989A1 (de) 2000-02-10 2001-08-16 Bosch Gmbh Robert Handwerkzeugmaschine
US20050085124A1 (en) * 2003-01-09 2005-04-21 Ferdinand Kristen Electrical tool
DE102004051653A1 (de) 2004-10-22 2006-04-27 Robert Bosch Gmbh Elektrohandwerkzeugmaschine
DE102005000162A1 (de) 2005-11-21 2007-05-24 Hilti Ag Netzbetriebenes Handwerkzeuggerät
DE102006022996A1 (de) 2006-05-17 2007-11-22 Robert Bosch Gmbh Elektrische Netzschlusseinrichtung für ein Elektrohandwerkzeug
EP2875909A1 (fr) * 2013-11-21 2015-05-27 Robert Bosch Gmbh Dispositif de support pour au moins une unité électrique d'outils pouvant être entraînés électriquement
EP2228179B1 (fr) 2007-12-27 2015-08-12 Makita Corporation Outil électrique
EP2384855B1 (fr) 2010-05-07 2017-06-14 Makita Corporation Meuleuse avec une connexion améliorée entre l'unité de commande et d'interrupteur pour une protection améliorée contre les poussières abrasives
EP3225362A1 (fr) * 2016-03-31 2017-10-04 Guido Valentini Unité de commande de moteur et outil guidé et/ou entraîné électroniquement comprenant une telle unité de commande
DE202016106821U1 (de) 2016-12-07 2018-03-08 Unger Kabel-Konfektionstechnik GmbH & Co. KG Netzanschlusssystem und Elektrowerkzeug
DE102016116563A1 (de) * 2016-09-05 2018-03-08 Lisa Dräxlmaier GmbH Abgedichtetes gehäuselement sowie abgedichtetes gehäuse und herstellungsverfahren
US20180233006A1 (en) * 2015-08-07 2018-08-16 Rosenberger Telematics Gmbh Apparatus, electrical terminal, and plug adapter for the terminal
US20180345474A1 (en) * 2015-11-24 2018-12-06 Robert Bosch Gmbh System Formed by at least one Hand-Held Power Tool, at least one First Interface, and at least one Electrotechnical Product

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JP4868389B2 (ja) * 2006-01-20 2012-02-01 本田技研工業株式会社 制御パネル装置
DE102012223431A1 (de) * 2012-12-17 2014-06-18 Robert Bosch Gmbh Gehäuse für eine elektrische Maschine mit einer Dichtung
US9578767B2 (en) * 2015-03-18 2017-02-21 Tyco Electronics Corporation Cover for an electronic module
US10395082B1 (en) * 2018-09-28 2019-08-27 Datalogic Usa, Inc. Cover retention system for data reader

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Publication number Priority date Publication date Assignee Title
EP1175286A1 (fr) * 2000-02-10 2002-01-30 Robert Bosch Gmbh Machine-outil a main
DE10005989A1 (de) 2000-02-10 2001-08-16 Bosch Gmbh Robert Handwerkzeugmaschine
US20050085124A1 (en) * 2003-01-09 2005-04-21 Ferdinand Kristen Electrical tool
DE102004051653A1 (de) 2004-10-22 2006-04-27 Robert Bosch Gmbh Elektrohandwerkzeugmaschine
DE102005000162A1 (de) 2005-11-21 2007-05-24 Hilti Ag Netzbetriebenes Handwerkzeuggerät
DE102006022996A1 (de) 2006-05-17 2007-11-22 Robert Bosch Gmbh Elektrische Netzschlusseinrichtung für ein Elektrohandwerkzeug
EP2228179B1 (fr) 2007-12-27 2015-08-12 Makita Corporation Outil électrique
EP2384855B1 (fr) 2010-05-07 2017-06-14 Makita Corporation Meuleuse avec une connexion améliorée entre l'unité de commande et d'interrupteur pour une protection améliorée contre les poussières abrasives
EP2875909A1 (fr) * 2013-11-21 2015-05-27 Robert Bosch Gmbh Dispositif de support pour au moins une unité électrique d'outils pouvant être entraînés électriquement
US20180233006A1 (en) * 2015-08-07 2018-08-16 Rosenberger Telematics Gmbh Apparatus, electrical terminal, and plug adapter for the terminal
US20180345474A1 (en) * 2015-11-24 2018-12-06 Robert Bosch Gmbh System Formed by at least one Hand-Held Power Tool, at least one First Interface, and at least one Electrotechnical Product
EP3225362A1 (fr) * 2016-03-31 2017-10-04 Guido Valentini Unité de commande de moteur et outil guidé et/ou entraîné électroniquement comprenant une telle unité de commande
DE102016116563A1 (de) * 2016-09-05 2018-03-08 Lisa Dräxlmaier GmbH Abgedichtetes gehäuselement sowie abgedichtetes gehäuse und herstellungsverfahren
DE202016106821U1 (de) 2016-12-07 2018-03-08 Unger Kabel-Konfektionstechnik GmbH & Co. KG Netzanschlusssystem und Elektrowerkzeug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4223457A1 (fr) 2022-02-02 2023-08-09 C. & E. Fein GmbH Boitier pour une machine-outil portative électrique

Also Published As

Publication number Publication date
EP3842187B1 (fr) 2024-08-14
US20210184393A1 (en) 2021-06-17
DE102019134135A1 (de) 2021-06-17
US11387599B2 (en) 2022-07-12

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