US20080053676A1 - Electric Hand Held Tool Device - Google Patents

Electric Hand Held Tool Device Download PDF

Info

Publication number
US20080053676A1
US20080053676A1 US11/848,784 US84878407A US2008053676A1 US 20080053676 A1 US20080053676 A1 US 20080053676A1 US 84878407 A US84878407 A US 84878407A US 2008053676 A1 US2008053676 A1 US 2008053676A1
Authority
US
United States
Prior art keywords
hand tool
tool device
handgrip
electrical hand
motor housing
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.)
Abandoned
Application number
US11/848,784
Other languages
English (en)
Inventor
Martin Baumann
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
Assigned to METABOWERKE GMBH reassignment METABOWERKE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAUMANN, MARTIN
Publication of US20080053676A1 publication Critical patent/US20080053676A1/en
Abandoned 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

  • the invention relates to an electrical hand tool device, particularly a drill, screwdriver, hammer drill, or percussion drill, with at least an optional rotating drive for a tool mountable in a tool receptor, with a motor housing and a transmission housing that is separate from the motor housing but connected with it, whereby the motor housing is formed of two half-shells that essentially lie within a plane extending along the longitudinal axis of the electrical hand tool device and dividing the electrical hand tool device essentially into two symmetrical halves with their side edges matching each other, and whereby a handgrip is provided on the motor housing.
  • Such a design for electrical hand tool devices has been known for many years whereby the plane within which the half-shells rest against each other essentially divides the machine into a left half and a right half when in the normal use position.
  • the transmission housing is connected to the motor housing and is connected with it. It is usual for this to connect the two housings using threaded fasteners.
  • the two housing shells of the motor housing are also usually connected with each other using threaded fasteners.
  • a conventional electrical hand tool device whereby the two half-shells are held together by means of a clip extending longitudinally.
  • the clip overlaps the adjacent side edges of the half-shells and connects them specifically by means of clamping, i.e., a non-positive method.
  • a non-positive method In general other types of connection are conceivable, such as an engaging method.
  • a non-positive connection method is preferred, however, to keep the play between the housing halves to a minimum.
  • securing or engaging media are provided that interact with corresponding securing or engaging media on the side edges of the half-shells.
  • Ribs or clinches may in particular be provided in the area of the side edges of the half-shells that are in clamped contact with ribs or clinches, or with the side walls, of the clip, and are preferably overlapped by the clip.
  • a flat or arched, or particularly a bomb-shaped material that extends longitudinally is used as a clip whose length is considerably greater than its width, whereby the height may vary along its length.
  • the clip possesses a band-like shape.
  • the half-shells of the housing and of the handgrip may also be connected together using threaded connectors.
  • the motor housing may also be attached to the transmission housing by means of the clip.
  • the clip includes connector elements between the two housings, and allows mounting on the transmission housing such that the half-shells of the motor housing rests firmly against matching edge of the transmission housing, providing contact between the two housing parts with no play.
  • the clip mounted on the transmission housing by means of a threaded connector may be provided. This offers the advantage that the attachment need not be in one or both half-shells which are generally made of plastic components which are more difficult to produce because of injection molding, but rather in a technologically simple clip that is stronger because of its clamping function and that is preferably made of metal.
  • the provided clip may thus be advantageous for the provided clip to completely surround the motor housing in the area of the opposing side edges of the half-shells. In this manner, a secure clamping is achieved along the entire length of the opposing side edges while intrusion of dust etc. into the motor housing is prevented by the clip surrounding both side edges. Moreover, this configuration allows achievement of a particularly pleasant appearance. Further, another seal may be provided in the area of the overlap of the clip over the side edges so that the degree of seal may be increased. The clip may thus be pressed longitudinally over the end of the motor housing facing away from the transmission housing.
  • the handgrip is also formed of two shells, and particularly that each shell of the handgrip is connected with a half-shell of the motor housing as one piece.
  • Such a design offers the advantage that the half-shells may be produced of plastic together with the half-shells of the handgrip using injection molding. In an electrical hand tool device, the number of parts necessary for the housing may thus be reduced, resulting in reduced installation costs.
  • the clip connects the handgrip with the motor housing unless a one-piece design is used.
  • the shells of the handgrip are connected with each other by means of the clip.
  • the clip surrounds the side edges of the shells of the grip on at least one side of the grip and presses these edges together advantageously.
  • connection elements may again be provided on the shells of the grip.
  • an engaging connection is possible.
  • the clip that covers the handgrip on one side has visual continuity along the direction toward the transmission housing by means of a grip protector that is formed as a separate component so that a visual arch results for which one part of the arc is formed by the clip on the handgrip, in which area a switch etc. may be provided, and the arc then extends toward the transmission housing such that the hand holding the handgrip is protected by this additional part of the arc.
  • the arc may then extend as far as the end of the transmission housing that includes a tool.
  • the clip and the grip protector are of the same material or color.
  • the handgrip may also be particularly advantageous for the handgrip to be positioned at the center of gravity of the electrical hand tool device.
  • a configuration is already known from DE 10 204 003 027 B3 which describes an electrical hand tool device in which the handgrip in the use position may be mounted on the upper side of the housing, and whereby the handgrip is so inclined that its free end points toward the tool receptor.
  • Placing the handgrip at the center of gravity of the electrical hand tool device offers the advantage that the machine, for example, may rest against the forearm of the user with the part of the motor housing facing away from the tool receptor, and thus may serve as lower-arm support.
  • such a design offers the advantage that the configuration of the handgrip at the center of gravity offers particularly good balance of the tool, and thus tilting of the tool during operation may largely be prevented. The holding and support effort by the user is thus reduced.
  • the handgrip is mounted at such an angle to the longitudinal axis of the electrical hand tool device that is particularly formed by the drive axis in extension of the tool receptor and the tool that an angle of between 5° and 30° exists between a longitudinal axis of the forearm of the user and the tool longitudinal axis.
  • the extension of the longitudinal axis of the electrical hand tool device may coincide with the extension of the forearm of the user near the tool, particularly in the area of the free tip of the tool, i.e., the two force lines intersect advantageously near the tip of the tool, allowing achievement of a particularly favorable force input with simultaneous precise control.
  • one or more resting surfaces on which to rest the electrical hand tool device are provided on the underside of the electrical hand tool device in operating position. This allows for an electrical hand tool device that had been set down to be picked up directly in the operating position without having to tilt the reposing electrical hand tool device that is resting on one of the two half-shells of the motor housing before operation may begin. This further protects the user's wrist.
  • one-handed pick-up may be performed, and the other hand is not required to position [the electrical hand tool device] in the operating position for a drilling operation, for example.
  • a flat area is located in the area of the clip on which the electrical hand tool device may be stood upright.
  • a second supplemental handgrip be mounted for two-handed operation.
  • This second handgrip may be positioned in the conventional manner behind the tool receptor with respect to the tool and, for example, by means of a strap that is provided at the appropriate position behind the tool receptor of a tool, be positioned on, and affixed to, the electrical hand tool device.
  • the transmission housing and/or the clip are of aluminum.
  • an aluminum injection-molded housing and a clip of the same material are involved.
  • a proper metallic transmission housing allows for longer machine service life. The machine is first stronger, and second, better conducts arising heat away from the transmission housing.
  • provision of a clip of die-cast aluminum increases the solidity of the machine, and particularly improves its appearance.
  • the half-shells of the motor housing and/or the shells of the grip may be of plastic.
  • actuation elements such as the switch are located in the area of the plastic housing of either the half-shells or of the grip.
  • carbon-fiber appliqués are mounted that may cover in particular the visible areas of the half-shells of the motor housing.
  • the clip is implemented as a flat clip rising only barely above the half-shells for almost its entire extent. Areas may also be provided, however, in which the clip rises farther above the half-shells for the purpose of improving device design.
  • the plastic housing or the cover of carbon fiber which may particularly be provided in the area of the transmission housing, contrasts in color in a pleasing fashion from the die-cast aluminum of the transmission housing and of the clip.
  • FIG. 1 motor housing of an electrical hand tool device
  • FIG. 2 cross-section view along projection A-A
  • FIG. 3 cross-section view along projection B-B in FIG. 1
  • FIG. 1 shows a motor housing that is provided with reference index 10 .
  • the motor housing 10 here is formed of two half-shells 12 and 14 that consist of a plastic material and are produced using injection molding.
  • the two half-shells 12 and 14 are connected together using a tongue-and-groove connection.
  • a clip 18 is provided that provides a clamping of the two half-shells 12 and 14 against each other, whereby ribs 19 and 20 are provided on the half-shells 12 and 14 as clamping media that engage into recesses 21 and 22 of the clip 18 , whereby the side walls of the recesses form matching clamping media and are so positioned that the two ribs are pressed against each other, providing a clamping effect of the half-shells 12 and 14 in the upper area of an electrical hand tool device.
  • Two ribs are also provided on the lower area of the motor housing, designated with indices 23 and 24 , which are not separated from each other, but rather in whose vicinity the tongue-and-groove slot is provided.
  • indices 23 and 24 Two ribs are also provided on the lower area of the motor housing, designated with indices 23 and 24 , which are not separated from each other, but rather in whose vicinity the tongue-and-groove slot is provided.
  • an opposing pressing of both ribs 23 and 24 is performed by the clamping media on the clip 18 .
  • the clip 18 is hereby is formed to fit completely around the motor housing in the vicinity of the opposing side edges of the two half-shells 12 and 14 ,
  • a handgrip 30 is provided by means of which the electrical hand tool device may be held by the user.
  • the handgrip 30 for this is positioned on the conventional operating and pick-up position of the machine on its upper side near the motor housing where it connects to the transmission housing (not shown). This position corresponds essentially to the center of gravity of the electrical hand tool device. Thus, balanced operation may be performed with minimal effort and fatigue.
  • the handgrip 30 is slightly inclined toward the tools receptor (not shown) in order to improve ergonomics.
  • the clip 18 thus extends over one side of the handgrip 30 , and the two shells 12 and 14 of the handgrip 30 (designated with 31 and 32 ) are clamped to each other by means of the tongue and groove using side elements 34 and 35 that form the clamping elements of the clip [ 18 ] in this area. Switches 36 to operate the electrical hand tool device are provided on the side of the handgrip 30 facing away from the clip 18 .
  • the clip 18 is essentially a flat surrounding band, a widened section 37 is provided only in at the rear edge of the motor housing where a surface can be enlarged for standing the electrical hand tool device and to bear the power cable.
  • the clip 18 possessing a flattened standing surface 40 on its lower side may be provided.
  • the clip may be bomb-shaped in order to provide a pleasing appearance.
  • the electrical hand tool device may be stood upright on the standing surface 40 so that it is not necessary to lay the electrical hand tool device on the side surfaces of the half-shells 12 and 14 . A first pivoting motion and gripping with the other hand in order to bring the machine into operating position is not necessary.
  • ventilation apertures 42 are provided in the motor housing.
  • the visible areas of the motor housing are covered by carbon-fiber appliqués 43 and 44 that provide the machine or the electrical hand tool device with a high-value visual image.
  • connection with the transmission housing may be accomplished here in the conventional manner, whereby the connection elements are provided in the clip 18 as well as in the transmission housing.
  • the end of the clip 18 on the handgrip 30 interacts with the matching additional clip element (not shown), which serves as a grip protector, and whose other end is attached to the transmission housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Drilling And Boring (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Surgical Instruments (AREA)
US11/848,784 2006-09-04 2007-08-31 Electric Hand Held Tool Device Abandoned US20080053676A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006041429A DE102006041429A1 (de) 2006-09-04 2006-09-04 Elektrohandwerkzeuggerät
DE102006041429.2-15 2006-09-04

Publications (1)

Publication Number Publication Date
US20080053676A1 true US20080053676A1 (en) 2008-03-06

Family

ID=38222553

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/848,784 Abandoned US20080053676A1 (en) 2006-09-04 2007-08-31 Electric Hand Held Tool Device

Country Status (5)

Country Link
US (1) US20080053676A1 (fr)
EP (1) EP1894680B1 (fr)
CN (1) CN101138842B (fr)
AT (1) ATE502733T1 (fr)
DE (2) DE102006041429A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070256847A1 (en) * 2006-05-02 2007-11-08 Mohsein Wan Hand power tool
US20130333908A1 (en) * 2012-06-13 2013-12-19 Robert Bosch Gmbh Transmission housing
US20210379752A1 (en) * 2020-06-09 2021-12-09 Andreas Stihl Ag & Co. Kg Housing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018206882A1 (de) * 2018-05-04 2019-11-07 Robert Bosch Gmbh Elektroschraubergehäuse
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

Citations (27)

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US3757394A (en) * 1969-12-10 1973-09-11 Nat Res Dev Hose clips
US3908139A (en) * 1974-06-10 1975-09-23 Singer Co Portable power tools
US4081704A (en) * 1976-02-13 1978-03-28 Skil Corporation Powered hand-held tool with unitary sub-assembly mounted by the tool housing sections
US4237588A (en) * 1978-01-10 1980-12-09 Rasmussen Gmbh Clamp for pipes or the like
US4368556A (en) * 1980-03-14 1983-01-18 Robert Bosch Gmbh Handle assembly
US4473928A (en) * 1980-11-20 1984-10-02 Tridon Limited Hose clamps
US4686747A (en) * 1984-10-30 1987-08-18 Baekdahl Samuel Worm drive clips
US5049012A (en) * 1991-03-11 1991-09-17 Ryobi Motor Products Corp. Auxiliary handle for hand-held drill
US5332156A (en) * 1993-10-25 1994-07-26 Ransburg Corporation Spray gun with removable cover and method for securing a cover to a spray gun
US5394039A (en) * 1993-01-19 1995-02-28 Ryobi Outdoor Products Inc. Electric motor mount having vibration damping
US5640741A (en) * 1994-10-13 1997-06-24 Ryobi Limited Structure for handle of power tool
US5692574A (en) * 1994-07-12 1997-12-02 Makita Corporation Vibrating tool and a vibration isolating ring
US5805408A (en) * 1995-12-22 1998-09-08 Lam Research Corporation Electrostatic clamp with lip seal for clamping substrates
US6058815A (en) * 1995-12-22 2000-05-09 Habermehl; G. Lyle Hand held power tool
US6213222B1 (en) * 2000-01-06 2001-04-10 Milwaukee Electric Tool Corporation Cam drive mechanism
USD477974S1 (en) * 2001-12-05 2003-08-05 One World Technologies Limited Cordless drill
US6716140B2 (en) * 2002-09-05 2004-04-06 Huan-Yu Cheng Display for an exercise device
US6796389B2 (en) * 2002-03-28 2004-09-28 Snap-On Incorporated Power hand tool and removable grip therefor
US6796386B2 (en) * 2000-09-08 2004-09-28 S.P. Air Kabusiki Kaisha Pneumatic rotary tool
US20040211578A1 (en) * 2003-04-22 2004-10-28 Credo Technology Corporation Power tool housing
US6845549B2 (en) * 2002-04-03 2005-01-25 Rasmussen Gmbh Worm drive hose clip
US7090032B2 (en) * 2004-02-23 2006-08-15 Ryobi Ltd. Electric power tool
US7137542B2 (en) * 2003-09-10 2006-11-21 Makita Corporation Vibration isolating handle
US20070295522A1 (en) * 2006-06-16 2007-12-27 Ulrich Bohne Hand power tool
US20080000665A1 (en) * 2006-05-31 2008-01-03 Ingersoll-Rand Company Structural support for power tool housings
US20080083093A1 (en) * 2006-02-06 2008-04-10 Reimar Saltenberger Plastic Clamp
US7451524B2 (en) * 2004-12-21 2008-11-18 Hilti Aktiengesellschaft Side handle for a hand-held power tool

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* Cited by examiner, † Cited by third party
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DE1910570U (de) * 1964-06-11 1965-02-25 Siemens Ag Aus schalenfoermigen teilen bestehendes gehaeuse.
DE1944660C3 (de) 1969-09-03 1980-04-03 C. & E. Fein Gmbh & Co, 7000 Stuttgart Elektrowerkzeug
DE3901728C2 (de) * 1989-01-21 1994-10-13 Atlas Copco Elektrowerkzeuge Schraubfreie Verbindung der Handgriffschalen eines zweischaligen Gehäuses für ein Elektrowerkzeug
CN1127685A (zh) * 1995-11-16 1996-07-31 冶金工业部钢铁研究总院 超高温烧结热等静压装置
JPH10249754A (ja) * 1997-02-27 1998-09-22 Robert Bosch Gmbh 手持ち式電動工作盤
GB0105140D0 (en) * 2001-03-02 2001-04-18 Black & Decker Inc Power tool body
DE102004003027B3 (de) * 2004-01-21 2005-07-14 Metabowerke Gmbh Elektrohandwerkzeuggerät mit einem nach oben weisenden Handgriff
DE202004008462U1 (de) * 2004-05-27 2005-10-06 Metabowerke Gmbh Elektrohandwerkzeuggerät

Patent Citations (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757394A (en) * 1969-12-10 1973-09-11 Nat Res Dev Hose clips
US3908139A (en) * 1974-06-10 1975-09-23 Singer Co Portable power tools
US4081704A (en) * 1976-02-13 1978-03-28 Skil Corporation Powered hand-held tool with unitary sub-assembly mounted by the tool housing sections
US4237588A (en) * 1978-01-10 1980-12-09 Rasmussen Gmbh Clamp for pipes or the like
US4368556A (en) * 1980-03-14 1983-01-18 Robert Bosch Gmbh Handle assembly
US4473928A (en) * 1980-11-20 1984-10-02 Tridon Limited Hose clamps
US4686747A (en) * 1984-10-30 1987-08-18 Baekdahl Samuel Worm drive clips
US5049012A (en) * 1991-03-11 1991-09-17 Ryobi Motor Products Corp. Auxiliary handle for hand-held drill
US5394039A (en) * 1993-01-19 1995-02-28 Ryobi Outdoor Products Inc. Electric motor mount having vibration damping
US5332156A (en) * 1993-10-25 1994-07-26 Ransburg Corporation Spray gun with removable cover and method for securing a cover to a spray gun
US5692574A (en) * 1994-07-12 1997-12-02 Makita Corporation Vibrating tool and a vibration isolating ring
US5640741A (en) * 1994-10-13 1997-06-24 Ryobi Limited Structure for handle of power tool
US5805408A (en) * 1995-12-22 1998-09-08 Lam Research Corporation Electrostatic clamp with lip seal for clamping substrates
US6058815A (en) * 1995-12-22 2000-05-09 Habermehl; G. Lyle Hand held power tool
US6213222B1 (en) * 2000-01-06 2001-04-10 Milwaukee Electric Tool Corporation Cam drive mechanism
US6796386B2 (en) * 2000-09-08 2004-09-28 S.P. Air Kabusiki Kaisha Pneumatic rotary tool
USD477974S1 (en) * 2001-12-05 2003-08-05 One World Technologies Limited Cordless drill
US6796389B2 (en) * 2002-03-28 2004-09-28 Snap-On Incorporated Power hand tool and removable grip therefor
US6845549B2 (en) * 2002-04-03 2005-01-25 Rasmussen Gmbh Worm drive hose clip
US6716140B2 (en) * 2002-09-05 2004-04-06 Huan-Yu Cheng Display for an exercise device
US20040211578A1 (en) * 2003-04-22 2004-10-28 Credo Technology Corporation Power tool housing
US7137542B2 (en) * 2003-09-10 2006-11-21 Makita Corporation Vibration isolating handle
US7090032B2 (en) * 2004-02-23 2006-08-15 Ryobi Ltd. Electric power tool
US7451524B2 (en) * 2004-12-21 2008-11-18 Hilti Aktiengesellschaft Side handle for a hand-held power tool
US20080083093A1 (en) * 2006-02-06 2008-04-10 Reimar Saltenberger Plastic Clamp
US20080000665A1 (en) * 2006-05-31 2008-01-03 Ingersoll-Rand Company Structural support for power tool housings
US20070295522A1 (en) * 2006-06-16 2007-12-27 Ulrich Bohne Hand power tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070256847A1 (en) * 2006-05-02 2007-11-08 Mohsein Wan Hand power tool
US7845427B2 (en) * 2006-05-02 2010-12-07 Robert Bosch Gmbh Sealing element of hand power tool housing
US20130333908A1 (en) * 2012-06-13 2013-12-19 Robert Bosch Gmbh Transmission housing
US20210379752A1 (en) * 2020-06-09 2021-12-09 Andreas Stihl Ag & Co. Kg Housing
US11787035B2 (en) * 2020-06-09 2023-10-17 Andreas Stihl Ag & Co. Kg Housing

Also Published As

Publication number Publication date
ATE502733T1 (de) 2011-04-15
EP1894680A1 (fr) 2008-03-05
EP1894680B1 (fr) 2011-03-23
CN101138842A (zh) 2008-03-12
CN101138842B (zh) 2011-01-19
DE102006041429A1 (de) 2008-03-20
DE502007006759D1 (de) 2011-05-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: METABOWERKE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BAUMANN, MARTIN;REEL/FRAME:019777/0077

Effective date: 20070822

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION