EP2639015A2 - Outil électrique - Google Patents

Outil électrique Download PDF

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Publication number
EP2639015A2
EP2639015A2 EP13158904.6A EP13158904A EP2639015A2 EP 2639015 A2 EP2639015 A2 EP 2639015A2 EP 13158904 A EP13158904 A EP 13158904A EP 2639015 A2 EP2639015 A2 EP 2639015A2
Authority
EP
European Patent Office
Prior art keywords
tool
base unit
motor
head
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.)
Withdrawn
Application number
EP13158904.6A
Other languages
German (de)
English (en)
Other versions
EP2639015A3 (fr
Inventor
Brent A. Kuehne
Michael Cannaliato
Ashok Baskar
Trevor Koenig
Steven Mcclaskey
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.)
Black and Decker Inc
Original Assignee
Black and Decker 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
Priority claimed from US13/530,629 external-priority patent/US20130020106A1/en
Application filed by Black and Decker Inc filed Critical Black and Decker Inc
Publication of EP2639015A2 publication Critical patent/EP2639015A2/fr
Publication of EP2639015A3 publication Critical patent/EP2639015A3/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Withdrawn legal-status Critical Current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
    • 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
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor

Definitions

  • some handheld power tools have allowed interchangeability of tool heads. Permitting interchangeability of the tool heads, while keeping the same tool body, allows for the same tool body to operate as a variety of different tools - such as a drill, drill/driver, circular saw, sander a jigsaw, etc.
  • a drill is a well known and widely used power tool.
  • the user wants the look, feel and comfort of a stand-alone drill.
  • a sander head for example, is attached to the power tool body such that the power tool is now intended to operate as a sander, the user wants the sander to operate comfortably and ergonomically.
  • the tool head is removable, there are challenges with supporting the tool head.
  • the tool head has been provided with extra support by having a dual or D-shaped handle.
  • the power tool may be shaped as an in-line power tool.
  • the motor is perpendicular to the output of the drill head spindle, making the drill a right-angle drill.
  • a tool of this type does not provide for a traditional power drill configuration of a motor being substantially perpendicular to the handle.
  • the tool handle and trigger are far back from where the tool head is attached to the tool body and the work surface when a pistol grip is employed.
  • the trigger is far back from the work surface, it is difficult for a user to control the tool.
  • the user's hand in these cases is far from the work surface. That makes it difficult for a user to judge where the tool will hit the work surface.
  • an exemplary embodiment includes a kit comprising a first tool body having a first motor housing and a first handle, the first handle disposed substantially mid-way between a front end and a rear end of the first motor housing, a DC motor having a first output shaft disposed within the motor housing, the first output shaft extending along a first output shaft axis; a second tool body having a second motor housing and a second handle, the second handle disposed substantially mid-way between a front end and a rear end of the second motor housing; an AC motor having a second output shaft disposed within the second motor housing, the second output shaft extending along a second output shaft axis; a drill tool head removably attachable to both the first tool body and the second tool body, the drill tool head including a drill tool head driven shaft in driving engagement with the first output shaft when the drill tool head is attached to the first tool body and in driving engagement with the second output shaft when the drill tool head is attached to the second tool body, the drill tool head driven shaft in driving engagement with a drill
  • the power sander When the sander tool head is attached to either the first tool body or the second tool body to form a power sander, and the power sander is set down with the sander platen resting on a work surface, the power sander may rest stably on the work surface.
  • the percentage of the total combined weight of the second motor housing and the sander tool head which is disposed rearwardly of a rearwardmost location of the region may be in the range of 10-50 %.
  • the percentage of the total combined weight of the second motor housing and the sander tool head which is disposed rearwardly of a forwardmost location of the region may be in the range of 25-75%.
  • the percentage of the total combined weight of the second motor housing and the drill tool head which is disposed rearwardly of a rearwardmost location of the region may be in the range of 10-50%.
  • the percentage of the total combined weight of the second motor housing and the drill tool head which is disposed rearwardly of a forwardmost location of the region may be in the range of 25-75%.
  • the percentage of the total combined weight of the first motor housing and the sander tool head which is disposed rearwardly of a rearwardmost location of the region may be in the range of 10-50%.
  • an exemplary embodiment includes a sander tool head for a kit, the kit including:
  • kits comprising:
  • an embodiment includes a power tool comprising:
  • the attachment head may be a sander head and a distance from an action point of the trigger to a work surface may be less than 110 mm.
  • the at least two attachment heads may include a drill head and a sander head.
  • the at least two attachment heads may include a drill head a sander head and a saw head.
  • At least two attachment heads which may be selectively attached and removed from the base unit and wherein when each of the at least two attachment heads is attached to the base unit, a distance from an action point of the trigger to a work surface may be less than 110 mm.
  • the at least two attachment heads may include a drill head and a sander head.
  • a center of gravity of the tool when either of the two tool heads is connected to the base unit may be less than 30 mm forward of an interface where the base unit and the tool heads meet.
  • a center of gravity of the tool when either of the two tool heads may be connected to the base unit is less than 20 mm forward of an interface where the base unit and the tool heads meet.
  • an embodiment includes a power tool with a power tool body, the power tool body including a motor surrounded by a motor housing, a trigger for activating the motor, a foot, a single handle disposed between the motor housing and the foot, the angle between a longitudinal axis of the handle and a longitudinal axis of the motor being between 65 and 115 degrees; an attachment head removably attached to the power tool body; wherein the power tool body and the power tool head define an interface surface where the power tool body and the power tool head meet; and where in the trigger lies on a line that runs along the interface surface.
  • At least two attachment heads may be selectively attached and removed from the base unit and wherein when each of the at least two attachment heads is attached to the base unit and a distance from an action point of the trigger to a work surface may less than 150 mm.
  • the base unit may include a first coupler and the tool head comprises a second coupler, the first and second couplers being coupled together to transfer rotational motion from the motor to the tool head and a motor mount may be attached to the motor and a plate is attached to a rear face of the tool head and the motor mount and the plate have complementary alignment features which align the first and second couplers.
  • the tool comprises a tool base unit 100 and a removably attached tool head 200.
  • the tool head 200 is a drill head.
  • the tool base unit 100 includes a motor housing portion 101 a handle 102 extending from the motor housing portion and a foot 103 at the far end of the handle 102.
  • the tool base unit 100 further includes a ledge 104 that helps to support the drill head 200.
  • a trigger 120 is used to activate the motor 400.
  • the motor housing has a longitudinal axis A.
  • the longitudinal axis A is co-incident with the longitudinal axis of the motor housed in the motor housing 101.
  • the handle 102 has a longitudinal axis B.
  • the handle 102 is located substantially mid-way between a front end and a rear end of the motor housing 101 and is substantially perpendicular to the motor housing 101.
  • the angle ⁇ between the longitudinal axis of the handle B and the longitudinal axis A of the motor housing 101 may be between 50 and 120 degrees.
  • the handle 102 is substantially perpendicular to the motor housing 101 and it is contemplated that exemplary embodiments of the tool which have an angle ⁇ between 65 and 115 degrees, and particularly between 70 and 110 degrees, provide good ergonomics for at least the drill tool head 200.
  • Typical power tools have only a single configuration and any tool head is not readily removable and interchangeable with other tool heads. Because the tool heads in such typical power tools are simply integrated into the power tool, the tool head is firmly and securely supported and held in place by such integral construction. In a power tool system with removable and interchangeable heads, the tool head must be supported, but, must also be removable. Thus, the tool head cannot be attached in the permanent manner of stand alone power tools. In prior power tool systems with interchangeable tool heads, the tool head has been supported by various means to address this. For example, in US Patent No. 6,634,439 , the power tool uses a D-handle to provide extra support.
  • the power tool is constructed as an in-line tool (the tool motor and handle are substantially in-line with one another) such that the tool head sits entirely on the base unit.
  • no particular support has been provided, such as US Patent No. 5,033,552 .
  • the present power tool system has a base unit with a ledge 104 which is substantially parallel to an axis of the motor 400 and/or the longitudinal axis A of the motor housing.
  • the tool ledge 104 allows the tool to have a single mid-handle 102 that is angled with respect to the longitudinal axis A of the motor housing, while sufficiently supporting the tool head.
  • Having a ledge 104 of this type also allows for a good portion of the tool head to be exposed so that controls can be exposed for the user on another side of the tool head (see, for example, the two speed hammer drill head 262 having a gear change shifter 272 as shown in Fig. 13 ).
  • the design also allows for tool shapes such as the trim saw shown in Fig. 16 without unnecessarily increasing the distance between the power tool trigger and the work surface.
  • the drill head 200 and the tool base unit 100 meet at an interface C.
  • the ledge 104 extends forward from this interface C and a line running through the interface intersects the trigger 120.
  • Figs. 4 and 5 illustrate the coupling features of the tool base unit 100 and the tool head 200, respectively, in more detail.
  • the tool base unit 100 has a front face 105 of the motor housing 101.
  • the front face 105 of the motor housing abuts against the rear face 230 of the drill head 200.
  • the plane in which the front face 105 and the rear face 230 meet forms the interface C of Fig. 1 .
  • the base unit 100 has a generally circular opening 150 into which a coupling portion of the tool head 200 can be fit. Inside the circular opening 150, there is also a motor mount opening 160 which exposes the motor mount 161. A male coupler 110 which is coupled to the motor and spins with the motor shaft is at a center of the motor mount 161. The male coupler 110 transfers mechanical power from the tool base unit 100 to the tool head 200. Adjacent to the motor mount opening 160 is a first recessed face 151. The first recessed face 151 has several features for mating with the tool head 200, including slots 152, ribs 153 and cutout 154. There is a second recessed face 155 in a direction towards the tool head 200 and a plurality of ribs 106 at corners of the first recessed face 151.
  • the ledge 104 has an opening 107 for receiving a contact plate 420 of the tool head 200.
  • the contact plate 420 contacts a plate member 430 and together they serve as a lock-out as described in further detail in US Patent Application 61/508,962 , which has been incorporated by reference (the same reference numbers are not used in application 61/508,962 as in the present application).
  • the coupling portion of the tool head 200 is shown in Fig. 5 .
  • the tool head 200 has a rear face 230 that abuts the front face 105 of the tool head when the tool head 200 is coupled to the tool base unit 100.
  • the tool head has a plate 201 that is screwed onto the rear face 230 with screws 202.
  • a first protrusion 210 protrudes from the plate 201 towards the tool base unit 100.
  • the tool head 200 coupling portion further includes a second protrusion portion 220 which extends from the first protrusion 210.
  • the second protrusion portion 220 is generally cyrlindrical in shape. It includes slots 221 and ribs 222 and 223. It further includes a recess 224 which receives a spring 425 (see Fig. 6 ).
  • the slots 221 receive the ribs 153, the protrusions 222 fit in the slots 152 and the ribs 223 slide into the cutout 154.
  • the tool head 200 includes a female coupler 250 which engages the male coupler 110 of the tool base unit. Additionally, the spring 425 sets into the recess 224 to axially lock the tool head 200 in place.
  • the spring 425 and recess 224 of the present application operate similarly to the spring and recess combination shown in US Patent No. 6,634,439 , which is incorporated by reference. While this exemplary embodiment shows the base unit coupler 110 being male and the tool head coupler 250 being female, these could be reversed. Similarly, the other various mating features could be reversed.
  • the features of the plate 201 directly mate with those of the motor mount 161.
  • the male coupler 160 has to be aligned with the female coupler 250 in order to transfer drive from the motor 400 to the tool head 200 and the output of the tool head 200.
  • the motor 400 is clamped tightly into the motor housing 101 and the male coupler 160 and female coupler 250 have to be closely aligned.
  • the features on the plate 201 and the motor mount 161 are used as alignment features. If features on the outside of housing of the drill head 200 were used in conjunction with features on the motor housing 101 to align the tool head 200 and the tool base unit 100, there can be a much more significant tolerance stack-up, because of the number of assembled parts between the alignment features and the male and female couples 110, 250, which ultimately must be aligned.
  • Figs. 6 and 7 show internals of the base unit 100 (the base units 100' of Fig. 8 and 100" of Fig. 9 includes similar internal features).
  • the base unit 100 of the tool has a motor 400 (in the exemplary embodiment of Fig. 1 a DC motor; in the exemplary embodiment of Fig. 8 an AC motor).
  • the motor 400 has a motor fan 401 at its front end for dissipating heat.
  • the exemplary motor additionally has a brush ring 402 and a commutator 403.
  • An output shaft 404 extends from the motor and provides drive to the male coupler 110.
  • the motor 400 is supported by a shaft 410 which is partially covered by insulation 411.
  • the shaft 410 may be integral and continuous with shaft 404 or may be a separate second shaft. At the rear end of the shaft 410, there is a bearing 411 supported in the housing.
  • the motor 400 is activated by the variable speed trigger 120 and provides power to the base unit coupler 110.
  • the trigger 120 is attached to a switch 130. Pulling the trigger 120 activates the switch 130 which in turn causes power to be provided to the motor. Ion this embodiment, the switch 130 and trigger 120 are variable speed, such that the speed of the motor 400 can be varied by pulling the trigger 120 more or less.
  • Fig. 1 shows a power tool base unit 100 which receives a slide-type battery pack 300.
  • Fig. 8 is a corded base unit 100' and receives AC power and has an AC motor.
  • the corded base unit 100' shown in Fig. 8 the area at the bottom of the handle near where the cord is located is considered a foot.
  • Fig. 9 shows a base unit 100" which receives a 3-cell type battery pack.
  • Other battery packs such as a tower pack, are also contemplated.
  • the battery packs may differ both in the mechanical interface and power/voltage.
  • the same tool head may fit into each of the different base units 100, 100' and 100".
  • the drill head 200 may fit into the base unit 100, as shown in Fig. 1 , and alternatively into the base unit of Fig. 8 or Fig. 9 .
  • the sander head when the sander head operates as the tool head, as shown in Fig. 11 , it may fit into a base unit with a sliding battery pack as shown in Figs. 1 and 11 . It may also fit with the base units of Figs. 8 and 9 . This allows a user to have both a cordless and a corded system using the same tool heads.
  • Figs. 10-17 illustrate the power tool system with a variety of different tool heads.
  • Fig. 10 illustrates a jig saw head 266
  • Fig. 11 shows a sander head 260
  • Fig. 12 illustrates an impact driver 261
  • Fig. 13 illustrates a two speed hammer drill 262
  • Fig. 14 shows an oscillating tool 267
  • Fig. 15 illustrates a router 263
  • Fig. 16 illustrates a trim saw 264
  • Fig. 17 illustrates an inflator 265.
  • Each of these tool heads 260-267 have a coupling section as shown in Fig. 5 for the drill head 200. That allows each of the tool heads 260-267 to similarly fit with a base unit with a sliding battery pack as shown in Figs.
  • Fig. 10 illustrates a jig saw head 266
  • Fig. 11 shows a sander head 260
  • Fig. 12 illustrates an impact driver 261
  • Fig. 13 illustrates a two speed hammer drill 262
  • Fig. 14 shows an oscillating tool 267
  • Fig. 15 illustrates a router 263
  • Fig. 16 illustrates a trim saw 264
  • Fig. 17 illustrates an inflator 265.
  • Each of these tool heads 260-267 have a coupling section as shown in Fig. 5 for the drill head 200. That allows each of the tool heads 260-267 to similarly fit with a base unit with a sliding battery pack as shown in Figs. 10-17 or one of the other base units as shown in Figs. 8 and 9 .
  • the design of the exemplary embodiment of the power tool system shown in the present application allows for the work surface to be spaced an efficient distance from the tool trigger.
  • the drill driver 200, impact driver 261, sander 260, router 264, trim saw 265 and oscillating 267 tool heads each have distances from the action point of the trigger 120 to the work surfaces which are less than 110 mm.
  • the two speed hammer drill 262 is has a trigger to work surface distance that is somewhat longer due to the additional gears needed to provide a hammer mode and a gear change. However, it still has a trigger to work surface distance of less than 150 mm.
  • Fig. 18 shows the center of gravity (CG) when the drill tool head 200 is attached. As shown in Fig. 18 , when the drill tool head 200 is attached, the center of gravity of the power tool is located slightly above a top surface of the ledge (4.8 mm) and forward of the interface C (by 14.5 mm). This location is also slightly forward of the actuation point of the trigger.
  • Fig. 19 shows the center of gravity (CG) when the sander tool head 260 is attached. As shown in Fig.
  • CG center of gravity
  • CG location is also slightly forward of the actuation point of the trigger.
  • Fig. 20 shows the center of gravity (CG) when the trim saw tool head 265 is attached.
  • the center of gravity (CG) of the power tool is located slightly above a top surface of the ledge 104 (3 mm) and forward of the interface C (by 14 mm).
  • the CG location is also slightly forward of the actuation point of the trigger.
  • a center of gravity location is beneficial for a number of reasons. Initially, by being located above the ledge 140, the center of gravity location allows for the tool heads to be well supported by the ledge and helps to facilitate the single, mid-handle design. Additionally, by having the CG less than 30 mm forward of the interface C, the ledge 140 does not have to be made unnecessarily long to support the CG. Additionally, that provides a CG near the actuation point of the trigger.
  • the weight of the power tool with respect to a region where the handle extend from the motor housing is designed for ergonomic usage of different tool heads.
  • exemplary embodiments of the present application improve the ergonomics of a power tool system with interchangeable heads. Therefore, according to one aspect of the present application, the percentage of weight when the sander tool head 200 is attached to the base unit 100 shown in Fig. 1 or the base unit 100' shown in Fig.
  • the percentage of the total combined weight of the motor housing and the sander tool head which is disposed rearwardly of a rearwardmost location of said region is in the range of 10-50%.
  • the ergonomics can be further improved when the percentage is in the range of 20-40% and yet further improved as the weight is in the range of 25-35%.
  • the percentage is in the range of 25-75%, ergonomics are improved when the range is in 35-65% and further improved if the percentage is within the range of 45-55%.
  • the percentage of weight of the exemplary embodiment is in the same range, thus providing a consistent experience for the user for two of the most widely used handheld power tools.
EP13158904.6A 2012-03-13 2013-03-13 Outil électrique Withdrawn EP2639015A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261610268P 2012-03-13 2012-03-13
US13/530,629 US20130020106A1 (en) 2011-07-18 2012-06-22 Power tool

Publications (2)

Publication Number Publication Date
EP2639015A2 true EP2639015A2 (fr) 2013-09-18
EP2639015A3 EP2639015A3 (fr) 2018-03-28

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Application Number Title Priority Date Filing Date
EP13158904.6A Withdrawn EP2639015A3 (fr) 2012-03-13 2013-03-13 Outil électrique

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EP (1) EP2639015A3 (fr)
CN (1) CN203236446U (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2519962A (en) * 2013-11-01 2015-05-13 Robert Fowler A handheld power tool
EP2949431A1 (fr) * 2014-05-30 2015-12-02 Black & Decker Inc. Outil électrique
FR3039087A1 (fr) * 2015-07-22 2017-01-27 Innovation Fabrication Commercialisation Infaco Outil electroportatif multifonctions
NL2018778B1 (en) * 2017-04-25 2018-11-05 Skil B V Power tool
USD947636S1 (en) 2020-10-14 2022-04-05 Black & Decker Inc. Impact tool
USD956501S1 (en) 2020-11-06 2022-07-05 Black & Decker Inc. Impact tool

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110536766B (zh) * 2017-06-14 2021-11-09 思科实业有限公司 模块化手持式电动工具系统
CN114833426B (zh) * 2022-04-29 2023-03-24 温岭阿凡达机电有限公司 一种电焊机

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US5033552A (en) 1990-07-24 1991-07-23 Hu Cheng Te Multi-function electric tool
US6634439B2 (en) 2000-03-10 2003-10-21 Black & Decker Inc. Interlock mechanism

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US5771516A (en) * 1996-08-26 1998-06-30 Huang; Chen Shu-Hsia Exchangeable power hand tool
GB2372471A (en) * 2001-02-23 2002-08-28 Black & Decker Inc Power tool system
DE102005036642B3 (de) * 2005-08-04 2007-03-29 Narex Česká Lípa a.s. Vorrichtung zum Befestigen eines Vorsatzgerätes an einer Handwerkzeugmaschine
DE102006029630A1 (de) * 2006-06-28 2008-01-03 Robert Bosch Gmbh Handwerkzeugmaschine
US7770660B2 (en) * 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US5033552A (en) 1990-07-24 1991-07-23 Hu Cheng Te Multi-function electric tool
US6634439B2 (en) 2000-03-10 2003-10-21 Black & Decker Inc. Interlock mechanism

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2519962A (en) * 2013-11-01 2015-05-13 Robert Fowler A handheld power tool
US10265842B2 (en) 2013-11-01 2019-04-23 Robert Fowler Handheld power tool
EP2949431A1 (fr) * 2014-05-30 2015-12-02 Black & Decker Inc. Outil électrique
US9751176B2 (en) 2014-05-30 2017-09-05 Black & Decker Inc. Power tool accessory attachment system
US10576593B2 (en) 2014-05-30 2020-03-03 Black & Decker Inc. Power tool accessory attachment system
FR3039087A1 (fr) * 2015-07-22 2017-01-27 Innovation Fabrication Commercialisation Infaco Outil electroportatif multifonctions
NL2018778B1 (en) * 2017-04-25 2018-11-05 Skil B V Power tool
EP3401061A1 (fr) * 2017-04-25 2018-11-14 Skil B.V. Outil électrique, assemblage d'un tel outil électrique et accessoire
EP3797930A1 (fr) * 2017-04-25 2021-03-31 Skil B.V. Outil électrique
USD947636S1 (en) 2020-10-14 2022-04-05 Black & Decker Inc. Impact tool
USD956501S1 (en) 2020-11-06 2022-07-05 Black & Decker Inc. Impact tool

Also Published As

Publication number Publication date
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CN203236446U (zh) 2013-10-16

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