EP3665746A1 - Accouplement par enfichage pour unité de batterie - Google Patents

Accouplement par enfichage pour unité de batterie

Info

Publication number
EP3665746A1
EP3665746A1 EP18745990.4A EP18745990A EP3665746A1 EP 3665746 A1 EP3665746 A1 EP 3665746A1 EP 18745990 A EP18745990 A EP 18745990A EP 3665746 A1 EP3665746 A1 EP 3665746A1
Authority
EP
European Patent Office
Prior art keywords
plug
coupling
contact
contact spring
spring pair
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Withdrawn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
EP18745990.4A
Other languages
German (de)
English (en)
Inventor
Ralf Meixner
Johannes Stempfhuber
Markus Holubarsch
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 EP3665746A1 publication Critical patent/EP3665746A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section
    • 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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
    • 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
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • 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
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H01R13/05—Resilient pins or blades
    • 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
    • H01R13/02—Contact members
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together

Definitions

  • the present invention relates to a plug-in coupling for electrically contacting an electric drive comprised by a hand-held power tool with a battery unit which is to be received by the hand-held power tool.
  • the plug-in coupling has at least one to be connected to the power tool electrical contact plate and at least one corresponding thereto electrical contact spring pair.
  • the contact spring pair is to be arranged on the battery unit and postponed in the direction of loading on the contact plate or deducted in the withdrawal direction of this.
  • Plug-in couplings of the type mentioned are basically known from the prior art.
  • the object is achieved in that the contact plate and the contact spring pair in the contacted state form a kraftformschlOssige Rastrivsparung.
  • the invention includes the recognition that act in the form of electricity and mechanical loads during operation of the power tool on the plug-in coupling in addition to the actually to be transmitted electrical loads. Due to application-related vibrations and vibrations, the plug-in coupling experiences undesirable acceleration forces. These can lead to relative movements between the device-side contact plate and the battery-side contact spring pair. This typically leads to increased wear of the plug-in coupling, which is often even further accelerated by dust entry. In addition, an unwanted relative movement between the contact plate and the contact spring pair can lead to an increase in the contact resistance of the contact pairing between these elements, which in turn leads to an undesired thermal overload up to the point of erosion.
  • the plug-in coupling described in the document US 8,113,868 can be dispensed with a device spring-sprung contact plate.
  • the contact plate of the plug-in coupling according to the invention is preferably arranged rigidly with respect to the handheld power tool or a housing of the power tool.
  • the solution according to the invention in turn has the advantage that a comparatively large tolerance compensation in the contact pairing of the plug-in coupling is possible, which is not the case in known from the prior art plug-in with spring-loaded as a whole unit contact holder as a holder for the contact plate.
  • the contact plate has a transverse to the direction of extension groove into which a detent formed on the contact spring pair can engage.
  • the groove is formed on both sides of the contact plate, so that a respective latching En this can engage.
  • the groove is formed as a slot. It has proven to be advantageous if the elongated hole has at least one chamfer in the push-on direction and / or in the withdrawal direction
  • the groove may be part of a surface contour of the contact plate.
  • the surface contour is formed complementary to the contact spring pair.
  • the contact spring pair has a joining angle which is greater than a holding angle of the contact spring pair.
  • the contact plate at the end has a preferably tapered coupling aid.
  • the contact spring pair has two mutually opposite elastic double tongues.
  • Each of the double tongues can be supported by means of two additional spring elements, which preferably counteract a spreading of the two opposite elastic double tongues.
  • the additional spring elements may be part of a plug housing of a contact plug.
  • the contact spring pair is part of such a contact plug.
  • the plug-in coupling has two, preferably exactly two spaced-apart contact plates.
  • the plug-in coupling may have two, preferably exactly two, spaced-apart contact spring pairs.
  • the invention is likewise achieved by a hand tool with a plug-in coupling as described above, wherein the electrical contact plate of the plug-in coupling is in particular rigidly connected to the handheld power tool and the contact spring pair is arranged on a battery unit assigned to the handheld power tool
  • Fig. 1 shows a preferred embodiment of a plug-in coupling according to the invention in a separate state
  • Fig. 2 shows the embodiment of Figure 1 in the contacted state.
  • Fig. 3 is a more detailed view of the contact plug of the embodiment of
  • Fig. 4 shows a second embodiment of a contact plate of an inventive
  • Fig. 5 shows a third embodiment of a contact plate as part of an inventive
  • Fig. 6 is a section of the illustration of Fig. 5;
  • Fig. 7 shows a fourth embodiment of a contact plug of an inventive
  • Fig. 8 shows the view from Fig. 7 in sectional view.
  • FIG. 1 A preferred embodiment of a plug-in coupling 100 according to the invention is shown in FIG.
  • the plug-in coupling 100 is used for electrically contacting an electric drive 90 encompassed by a handheld power tool 200 with a rechargeable battery unit that is to be received by the handheld power tool 200.
  • the hand tool 200, the electric drive 90 and the battery unit 20 are in Flg. 1 only shown schematically.
  • the plug-in coupling 100 has at least one contact plate 1 to be connected to the handheld power tool 200 and in the present case also connected, and at least one electrical contact spring pair 3 corresponding thereto.
  • the contact spring pair 3 is to be arranged on the battery unit 20 and in the present case also arranged.
  • the contact spring pair 3 is postpone in the direction of retraction AR on the contact plate 1, deducted in the withdrawal direction AB of the contact plate 1.
  • the contact spring pair 3 is part of a contact plug 3, which in turn has a plug housing 35 which surrounds the contact spring pair 3 at least in sections.
  • Fig. 1 shows the separate state DK, in which the contact spring pair 3 electrical contact plate 1 are separated from each other.
  • the contact plate 1 and the contact spring pair 3 are designed in such a way that they form a force-locking latch connection pair in the contacted state ZK (see FIG.
  • the contact plate 1 has a transverse to the direction of retraction AR extending groove, which is presently designed as a slot 5, in which on the contact spring pair 3 formed locking lugs 7, 7 * can engage.
  • the contact plate 1 on the front side a tapering in the withdrawal direction coupling aid 4.
  • the contact spring pair 3 has two mutually opposite elastic double tongues 13, 13 * .
  • Other embodiments of the contact spring pair 3 are possible.
  • Fig. 2 shows now the plug-in coupling 100 of FIG. 1 in the contacted state ZK.
  • the contact plate 1 and the contact spring pair 3 form a frictionally locking connection.
  • formed on the contact spring pair 3 locking lugs 7, 7 'on both sides formed in the slot formed as a slot 5 of Contact plate 1 snapped.
  • FIG. 3 now shows a contact plug 30, which comprises the contact spring pair 3, in plan view. Good to see the opposite elastic double tongues 13, 13 ', on each of which the locking lug 7, 7' is formed.
  • the formation of the latching lugs 7, T can be provided for example by cold forming (sheet metal deformation).
  • a foot angle FW of the contact spring pair 3 is greater than a holding angle HW of the contact spring pair 3.
  • the joining angle FW is preferably between 30 and 50 degrees, particularly preferably between 35 and 45 degrees.
  • the joining angle FW is greater than the holding angle HW, a comparatively simple sliding of the contact spring pair 3 on the contact plate 1 is possible, since this (see, Flg 1) has a frontally arranged coupling aid.
  • each of the double tongues 13, 13 'via two additional spring elements 15, 15' is supported.
  • the additional spring elements 15, 15 ' counteract a spreading, in particular an overstretching of the two opposite elastic double tongues 13, 13'.
  • the additional spring elements 15, 15 ' can be formed in one piece with a plug housing 35 of the contact plug 30.
  • the contact spring pair 3 is in turn pressed on a latching lugs 7, 7 'side facing away from inside the plug housing 35.
  • Fig. 4 shows another embodiment of a contact plate 1 of a plug-in coupling according to the invention.
  • the contact plate 1 has a transverse, more precisely perpendicular, extending to the direction of retraction AR groove 5, in which on the contact spring pair 3 formed latching lugs 7, 7 * (see Fig. 3) can engage, so as to form a kraftformschlüssige Rastijn Rastijnsparung.
  • the groove 5 As an alternative to the configuration of the groove 5 as a slot (cf., Fig. 1), in the embodiment of Fig. 4, the groove 5 part of a surface contour 2 of the contact plate 1, wherein the surface contour 2 is formed complementary to the contact spring pair 3.
  • the contact plate 1 has a coupling aid 4 which tapers in the opposite direction to the take-off direction AB.
  • a contact plate 1 is shown in Fig. 5.
  • the contact plate 1 has a transverse to the direction of retraction AR extending groove 5, which is formed here as a slot.
  • a chamfer 9, 9 ' are formed to facilitate pushing on or removing a contact plug on the contact plate 1 and of the contact plate 1.
  • Fig. 5 Shown in Fig. 5 is a sectional plane A-A, whose section A-A in Fig. 6 is shown.
  • the chamfers 9, 9 ' Provided in the push-on direction AR and in the withdrawal direction AB are formed on both sides of the contact plate 1 on the groove 5 formed as a slot.
  • FIG. 7 now shows a perspective view of the contact plug 30 of FIG. 3 with a section plane B-B drawn in. Good to see the two additional spring elements 15, 15 ', the support of the opposite elastic double tongues 13, 13' serve.
  • the two additional spring elements 15, 15 ' are integrally formed with the plug housing 35. Pressed into the plug housing 35 is at least a portion of the contact spring pair 3rd
  • FIG. 8 shows the section BB through the contact plug 30 of FIG. 7.
  • a section of the contact spring pair facing away from the latching lugs 7, 7 * nestles parallel thereto within the plug housing 35.
  • the additional spring elements 15, 15 ' touch the contact spring pair 3 in the region of the latching lugs 7, T.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

L'invention concerne un accouplement par enfichage (100) destiné à mettre un entraînement électrique (90), contenu dans un machine-outil électrique à main (200) en contact électrique avec une unité de batterie (20) qui doit être logée dans la machine-outil électrique à main (200). L'accouplement par enfichage (100) comporte au moins une plaque de contact électrique (1) devant être reliée à la machine-outil électrique à main (200) et au moins une paire de ressorts de contact électrique (3) correspondant à la plaque de contact. La paire de ressorts de contact (3) doit être disposée au niveau de l'unité de batterie (20), placée par coulissement sur la plaque de contact (1) dans la direction de coulissement (AR) et retirée de celle-ci dans la direction retrait (AB). La plaque de contact (1) et la paire de ressorts de contact (3) forment à l'état contacté (ZK) un appariement de connexion par encliquetage à force.
EP18745990.4A 2017-08-09 2018-08-03 Accouplement par enfichage pour unité de batterie Withdrawn EP3665746A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17185504.2A EP3442080A1 (fr) 2017-08-09 2017-08-09 Raccord à emboîtement pour une unité d'accumulateur
PCT/EP2018/071115 WO2019030135A1 (fr) 2017-08-09 2018-08-03 Accouplement par enfichage pour unité de batterie

Publications (1)

Publication Number Publication Date
EP3665746A1 true EP3665746A1 (fr) 2020-06-17

Family

ID=59699479

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17185504.2A Withdrawn EP3442080A1 (fr) 2017-08-09 2017-08-09 Raccord à emboîtement pour une unité d'accumulateur
EP18745990.4A Withdrawn EP3665746A1 (fr) 2017-08-09 2018-08-03 Accouplement par enfichage pour unité de batterie

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17185504.2A Withdrawn EP3442080A1 (fr) 2017-08-09 2017-08-09 Raccord à emboîtement pour une unité d'accumulateur

Country Status (4)

Country Link
US (1) US11005206B2 (fr)
EP (2) EP3442080A1 (fr)
CN (1) CN111033900B (fr)
WO (1) WO2019030135A1 (fr)

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TWI749816B (zh) * 2020-10-16 2021-12-11 朝程工業股份有限公司 用於電動工具之公母合一端子及轉接器
US20230126709A1 (en) * 2021-10-27 2023-04-27 Illinois Tool Works Inc. Flexible substrate terminal

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Also Published As

Publication number Publication date
CN111033900B (zh) 2022-06-24
CN111033900A (zh) 2020-04-17
WO2019030135A1 (fr) 2019-02-14
US11005206B2 (en) 2021-05-11
EP3442080A1 (fr) 2019-02-13
US20200373698A1 (en) 2020-11-26

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