EP1238761A1 - Outil équilibré à mouvement rotatif motorisé - Google Patents

Outil équilibré à mouvement rotatif motorisé Download PDF

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Publication number
EP1238761A1
EP1238761A1 EP01115972A EP01115972A EP1238761A1 EP 1238761 A1 EP1238761 A1 EP 1238761A1 EP 01115972 A EP01115972 A EP 01115972A EP 01115972 A EP01115972 A EP 01115972A EP 1238761 A1 EP1238761 A1 EP 1238761A1
Authority
EP
European Patent Office
Prior art keywords
rotary tool
gear box
motor
input shaft
top portion
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Withdrawn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
EP01115972A
Other languages
German (de)
English (en)
Inventor
Robert L. Hartman
Steven C. Carney
Isidro M. Alanis
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.)
Snap On Inc
Original Assignee
Snap On Technologies Inc
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 Snap On Technologies Inc filed Critical Snap On Technologies Inc
Publication of EP1238761A1 publication Critical patent/EP1238761A1/fr
Withdrawn legal-status Critical Current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
    • B25F5/02—Construction of casings, bodies or handles

Definitions

  • This application relates generally to a rotary power tool. More particularly, this application relates to a hand-held rotary power tool with balanced weight distribution, and with tight access capability.
  • Hand-held rotary power tools are common, with predominantly two types of such tools available on the market, the pistol grip rotary tool and the right angle rotary tool.
  • the two types of tool differ largely with respect to their general orientation.
  • the standard pistol grip rotary tool has a motor, a gear box, and an output shaft all horizontally aligned within a housing and a handle depending from the rear of the housing.
  • Right angle rotary tools are more vertically orientated in order to be used in confined spaces.
  • the right angle rotary tools have a motor and a gear box vertically aligned within a handle, and an output shaft extending horizontally from the gear box.
  • Right angle rotary tools are typically used for applications where the work space does not allow the use of a pistol grip rotary tool.
  • the main drawback with these tools is that they are often difficult to work with. This is because the motor is typically positioned within the handle portion of the tool forcing the handle to be wider than is ergonomically desirable for comfortable gripping by a user's hand.
  • right angle rotary tools are typically less ergonomically friendly then the pistol grip rotary tool, and as such, they are typically used only as a specialty tool.
  • Another important feature is the provision of a hand-held rotary power tool with tight access capabilities.
  • Another important feature is the provision of a hand-held rotary power tool which is ergonomically designed for comfortable gripping by a user's hand.
  • FIG. 1 is a perspective view of an embodiment of the rotary power tool.
  • FIG. 2 is a side elevational view of the rotary power tool in FIG. 1, with the housing removed in order to show further detail.
  • FIG. 3 is a reduced side elevational view of the rotary power tool, of FIG. 1.
  • an embodiment of a handheld rotary power tool 10 is includes a housing 11 with a top portion 12, a handle portion 13, and a bottom portion 14 arranged into a relatively T-shaped configuration.
  • the handle portion 13 and the bottom portion 14 extend longitudinally below the top portion 12, with the handle portion 13 positioned between the top portion 12 and bottom portion 14.
  • the handle portion 13 including an ergonomic grip section 19 with contoured surfaces adapted for placement of a user's hand therearound.
  • a chuck 15 extends forwardly from the top portion 12 with jaws 16 for attachment with a tool bit.
  • a trigger 17 extends forwardly from the handle portion 13 for controlling the operation of a motor.
  • a reversing shuttle 18 extends intermediate to the top portion 12 and the handle portion 13 for controlling the rotational direction of the motor.
  • a motor 22 is located within the bottom portion 14 of the housing11.
  • An input shaft 21 is rotatively coupled to the motor 22, and extends from the motor 22 through the handle portion 13, eventually rotatively coupling to a gear box 20 located in the top portion 12 of the housing 11.
  • An output shaft 24 is also rotatively coupled to the gear box 20, the output shaft 24 extending therefrom at an angle that is substantially perpendicular to the longitudinal axis of the input shaft 21.
  • the output shaft 24 extends from the top portion 12 of the housing 11, and is coupled to the chuck 15 for rotation thereof.
  • a switch assembly 23 is coupled to the trigger 17 and is electrically connected in circuit with the motor 22 for activation thereof.
  • the switch assembly 23 is located along an upper portion of the handle portion 13.
  • the reversing shuttle 18 lies just above the switch assembly 23 intermediate to the top portion 12 and the handle portion 13.
  • the directional shuttle 18 is also coupled to the motor in a known manner, controlling the rotational direction thereof.
  • a power cord 25 is located along the bottom portion 14 and is also conductively coupled to the motor 22, providing power thereto.
  • the rotary power tool 10 is designed for optimum single-hand operation.
  • the length of the input shaft 21 allows for the motor 22 to be located below the handle portion 13, allowing the handle portionl3 to be appropriately and ergonomically designed thin enough so as to be comfortably gripped by the hand of a user.
  • the handle portion 13 can include an ergonomically designed grip section 19 designed to allow for secure and comfortable positioning of a hand relative to the drill.
  • the grip section 19 has contoured surfaces which conform to the palm surfaces of a hand.
  • the handle portion 13 may also be angled slightly at roughly 15° angle with respect to an axis defined by the input shaft 21, in order to comfortably accommodate the natural angle of the hand as it is applied to the drill.
  • the trigger 17 and the directional shuttle 18 are positioned to enable relatively easy finger tip access to the hand gripping the grip section 19.
  • the T-shaped configuration of the housing enables the weight of the tool to be effectively distributed to minimize weight-induced rotational torque on the handle.
  • the configuration of the housing 11 enables the heaviest components in the rotary tool 10, namely the gear box 20 and the motor 22, to be substantially vertically aligned in use, minimizing rotational torque.
  • the positioning of the motor 22 below the handle portion 13 further reduces rotational torque by providing a counterbalance to the chuck 15. Any rotational torque produced by the weight of the components in the top portion 12 of the housing 11 forward of the shaft 21, will be opposed by the weight of the components located in the bottom portion 14 of the housing 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Portable Power Tools In General (AREA)
EP01115972A 2001-03-07 2001-06-29 Outil équilibré à mouvement rotatif motorisé Withdrawn EP1238761A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80205001A 2001-03-07 2001-03-07
US802050 2001-03-07

Publications (1)

Publication Number Publication Date
EP1238761A1 true EP1238761A1 (fr) 2002-09-11

Family

ID=25182706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01115972A Withdrawn EP1238761A1 (fr) 2001-03-07 2001-06-29 Outil équilibré à mouvement rotatif motorisé

Country Status (4)

Country Link
EP (1) EP1238761A1 (fr)
JP (1) JP2002264042A (fr)
CN (1) CN100346936C (fr)
TW (1) TWM248576U (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2869252A1 (fr) * 2004-04-23 2005-10-28 Euraltech Ti Sa Principe de mise en equilibre statique indifferent d'une rallonge de transmission de couple de vissage pour mise en compliance de l'element vissant a son extremite
US8291603B2 (en) * 2006-07-07 2012-10-23 Robert Bosch Gmbh Handheld power tool, in particular handheld power saw

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4563335B2 (ja) * 2006-04-14 2010-10-13 リョービ株式会社 電動工具装置
JP5530186B2 (ja) * 2010-01-04 2014-06-25 株式会社マキタ 手持式電動工具
DE102010042605A1 (de) * 2010-10-19 2012-04-19 Robert Bosch Gmbh Arbeitswerkzeug, insbesondere Elektrowerkzeug
JP2013226647A (ja) * 2013-07-08 2013-11-07 Ryobi Ltd バッテリー式携帯用電動工具
GB2519962A (en) * 2013-11-01 2015-05-13 Robert Fowler A handheld power tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474077A (en) * 1982-02-01 1984-10-02 Black & Decker Inc. Housing retaining means for portable power tools and method of assembly therefor
US5347765A (en) * 1993-02-12 1994-09-20 Mixon Jr Harold W Device and method for multiple uses of a portable grinder
EP0878273A2 (fr) * 1997-05-12 1998-11-18 Atlas Copco Electric Tools GmbH Outil à main
US6102632A (en) * 1998-04-23 2000-08-15 Black & Decker Inc. Two speed right angle drill

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474077A (en) * 1982-02-01 1984-10-02 Black & Decker Inc. Housing retaining means for portable power tools and method of assembly therefor
US5347765A (en) * 1993-02-12 1994-09-20 Mixon Jr Harold W Device and method for multiple uses of a portable grinder
EP0878273A2 (fr) * 1997-05-12 1998-11-18 Atlas Copco Electric Tools GmbH Outil à main
US6102632A (en) * 1998-04-23 2000-08-15 Black & Decker Inc. Two speed right angle drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2869252A1 (fr) * 2004-04-23 2005-10-28 Euraltech Ti Sa Principe de mise en equilibre statique indifferent d'une rallonge de transmission de couple de vissage pour mise en compliance de l'element vissant a son extremite
US8291603B2 (en) * 2006-07-07 2012-10-23 Robert Bosch Gmbh Handheld power tool, in particular handheld power saw

Also Published As

Publication number Publication date
CN1373027A (zh) 2002-10-09
TWM248576U (en) 2004-11-01
JP2002264042A (ja) 2002-09-18
CN100346936C (zh) 2007-11-07

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