EP0234399A2 - Batteriebetätigtes Motorwerkzeug zum Wickeln - Google Patents

Batteriebetätigtes Motorwerkzeug zum Wickeln Download PDF

Info

Publication number
EP0234399A2
EP0234399A2 EP87101815A EP87101815A EP0234399A2 EP 0234399 A2 EP0234399 A2 EP 0234399A2 EP 87101815 A EP87101815 A EP 87101815A EP 87101815 A EP87101815 A EP 87101815A EP 0234399 A2 EP0234399 A2 EP 0234399A2
Authority
EP
European Patent Office
Prior art keywords
battery pack
rechargeable
battery
portable power
power tool
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
EP87101815A
Other languages
English (en)
French (fr)
Other versions
EP0234399B1 (de
EP0234399A3 (en
Inventor
Paul Robert Kilmer
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.)
Cooper Industries LLC
Original Assignee
Cooper Industries LLC
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 Cooper Industries LLC filed Critical Cooper Industries LLC
Publication of EP0234399A2 publication Critical patent/EP0234399A2/de
Publication of EP0234399A3 publication Critical patent/EP0234399A3/en
Application granted granted Critical
Publication of EP0234399B1 publication Critical patent/EP0234399B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/033—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wrapping or unwrapping wire connections

Definitions

  • the present invention relates to portable power tools more specifically, the present invention relates to battery operated portable power tools.
  • a specific example of such a portable power tool is a wire wrapping tool which is used to form a solderless connection between a wire and an electrical connector or terminal.
  • Newer portable power tools are powered by a battery pack which contains a rechargeable battery. When the rechargeable battery in the battery pack runs down, all the operator needs do is replace the battery pack with one containing a fresh battery. In the mean­time, the battery pack containing the exhausted battery is placed in a battery charger. Oftentimes, however, a battery charger or a source of electricity for powering the battery charger is not avail­able to the tool operator. Consequently, the operator finds himself without battery power before his job is complete.
  • a portable power tool of the type used for solderless electrical connections formed by wrapping wire around a post or a terminal includes an electric motor and torque transmission means to transfer the torque developed by the electric motor to the work piece.
  • the electric motor and the torque transmission means are enclosed in a casing.
  • a battery pack which serves as a handle for the portable power tool.
  • the battery pack is designed to contain either rechargeable or non-rechargeable bat­teries.
  • a spring mount­ing arrangement which, in addition to positioning the batteries within the battery packs, also serves to transmit electrical energy to the electric motor contained within the casing of the portable power tool.
  • the shape of the interior of the battery pack positions the rechargeable batteries so that the battery pack with a rechargeable battery contained therein may be inserted in a battery charger. If the battery pack happens to contain non-rechargeable batteries, the shape of the interior of the battery pack will position the batteries so that the battery pack with the non-rechargeable batteries con­tained therein cannot be inserted into a battery charger.
  • a portable power tool 10 typically of the type used to form wire wrap connections around electrical connectors or terminals (not shown) is powered by an electric motor 12.
  • Electric motor 12 in portable power tool 10 provides torque to the collar and bit retaining section 14 at the operative end 16 of wire wrapping tool 10.
  • the power from electric motor 12 is passed through a power transmission section 18 before reaching those parts of tool 10 which actually wrap wire around a connector or terminal.
  • Enclosing both motor 12 and power trans­mission section 18 of portable tool 10 is a casing 20. Electrical connections 22 and 24 from electric motor 12 are mounted at the bottom 26 of casing 20 in opening 28 just behind trigger 30 which acts as an on and off switch for wire wrapping tool 10.
  • Battery pack 32 is mounted within opening 28 by two ear members 34 and 36 which fit into compat­ible slots 38 and 40 within opening 28 at bottom 26 of power tool 10.
  • battery pack 32 has two electrical connections 42 and 44 which are placed into physical contact with the two compatible electrical connections 22 and 24 in bottom 26 of a portable power tool 10.
  • the battery pack 32 is sized so as to mount both standard "C” size batteries 46 and a "sub-C” size rechargeable battery 48 (shown in phantom).
  • Commonly available "C” size batteries 46 are generally not rechargeable. Those which are rechargeable will not provide sufficient electrical power in a recharged state to properly operate the device. If a recharger 50 such as the one shown in Figure 7 is used with standard "C" size batteries 46 of either the rechargeable or non-chargeable variety, a leak may develop in the battery or the battery itself may explode. Both situations are potentially hazardous for the user of portable power tool 10. Such is not the case with rechargeable batteries as their internal design permits recharging.
  • Helical spring 56 is sized so that when two standard "C” batteries 46 are used, helical spring 56 will engage top portion 58 of the uppermost battery or top 47 of the rechargeable battery and provide a complete electrical path between the uppermost or positive battery terminal 60 and one of the electri­cal connections 44 in battery pack 32 which engage electrical con­nections 22 and 24 to motor 12 within casing 20.
  • the other electri­cal connection is a spring strap 62 which is mounted within battery pack 32 to engage the bottom of either the pair of standard "C” cells 64 or the bottom of rechargeable battery 66. Spring strap 62 travels up side 68 of battery pack 32 to the other electrical terminal 42 in top 54 of battery pack 32. Because helical spring 56 is expandable, either "sub-C” type battery 48 or the pair of "C” type batteries 46 may be used in battery pack 32.
  • the battery pack 32 itself is constructed in two halves 70 and 72. This enables either the pair of standard "C” size cells 46 or the "sub-C” cell 48 to be easily removed and replaced should such be required.
  • the two halves of the battery pack 70 and 72 are connected by latches 74 and 76 at top 54 and at bottom 78, respectively.
  • latches 74 and 76 enable the user to separate halves 70 and 72 of battery pack 32 by merely inserting a small tool under top latch 74 and causing battery pack halves 70 and 72 to separate. This ease of operation eliminates the combersome task of removing a screw or a nut to gain access to the batteries.
  • a tongue and groove joint 96 is used on side 68 of battery pack 32 to position halves 70 and 72 one with respect to the other.
  • battery operated portable wire wrapping device 10 is used by insert­ing battery pack 32 in opening 28 in casing 20 of portable power tool 10. Battery pack 32 is then twisted until it locks in position. This twisting motion not only causes ears 34 and 36 to engage slots 38 and 40, but also causes electrical connections 42 and 44 at top 54 of battery pack 32 to mate with electrical connections 22 and 24 mounted in casing 20 of portable power tool 10.
  • an electrical current path is provided from either the negative terminal of the "C” size battery 80 or the negative terminal of the "sub-C” rechargeable battery 82 through spring strap 62 which travels up along side 68 of battery pack 32 through terminal 42 at top 54 of the battery pack 32 to terminal 22 in casing 20 of portable power tool 10 and thence to electric motor 12.
  • the electric circuit is completed by electrical energy traveling through leads 84 and 86 exiting electric motor 12 and thence through connectors 88 and 90 formed within casing 20 of portable power tool 10 and on to the positive end of either the rechargeable or non-rechargeable battery 60 through helical spring 56 which is positioned on top 54 of battery pack 32.
  • battery pack 32 When it is desired to recharge the batteries within battery pack 32, battery pack 32 is removed from power tool casing 20 by twisting battery pack 32 with respect to casing 20. This causes ears 34 and 36 to exit slots 38 and 40. As shown in Figure 7 battery pack 32 is then placed in a battery charger 50 where a preselected current is applied to the batteries to restore their electrical potential. If the non-rechargeable batteries or the standard "C" size cells 46 are used in battery pack 32, the end of battery cells 46 will be approximately flush with the end of battery pack 32. This position of standard "C" size cells 46 within battery pack 32 will not permit battery pack 32 to be positioned within battery charger 92.
  • a portable power tool 10 which may be run on either rechargeable or non-rechargeable batteries.
  • the positioning of the batteries within battery pack 32 prevents the operator from inadvertently creating a dangerous situation by inserting non-­rechargeable batteries into a battery charger.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
EP19870101815 1986-02-24 1987-02-10 Batteriebetätigtes Motorwerkzeug zum Wickeln Expired - Lifetime EP0234399B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83248486A 1986-02-24 1986-02-24
US832484 1986-02-24

Publications (3)

Publication Number Publication Date
EP0234399A2 true EP0234399A2 (de) 1987-09-02
EP0234399A3 EP0234399A3 (en) 1989-09-20
EP0234399B1 EP0234399B1 (de) 1994-04-27

Family

ID=25261785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870101815 Expired - Lifetime EP0234399B1 (de) 1986-02-24 1987-02-10 Batteriebetätigtes Motorwerkzeug zum Wickeln

Country Status (2)

Country Link
EP (1) EP0234399B1 (de)
DE (1) DE3789677T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8384340B2 (en) 2007-06-26 2013-02-26 The Coleman Company, Inc. Electrical appliance that utilizes multiple power sources

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194700A (en) * 1976-04-23 1980-03-25 O.K. Machine And Tool Corporation Battery-powered wire wrapping tool and wrapping bit
GB2072438A (en) * 1980-02-29 1981-09-30 Heine Optotech Kg Rechargeable electro-optical diagnostic instrument

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194700A (en) * 1976-04-23 1980-03-25 O.K. Machine And Tool Corporation Battery-powered wire wrapping tool and wrapping bit
GB2072438A (en) * 1980-02-29 1981-09-30 Heine Optotech Kg Rechargeable electro-optical diagnostic instrument

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PRODUCT ENGINEERING. no. 33, 14 May 1962, NEW YORK US page 98 - 99; "complex wiring tool" *

Also Published As

Publication number Publication date
EP0234399B1 (de) 1994-04-27
EP0234399A3 (en) 1989-09-20
DE3789677D1 (de) 1994-06-01
DE3789677T2 (de) 1994-08-11

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