DE202004008462U1 - Power tool, comprising separate housing for transmission unit accommodated in main housing - Google Patents

Power tool, comprising separate housing for transmission unit accommodated in main housing

Info

Publication number
DE202004008462U1
DE202004008462U1 DE200420008462 DE202004008462U DE202004008462U1 DE 202004008462 U1 DE202004008462 U1 DE 202004008462U1 DE 200420008462 DE200420008462 DE 200420008462 DE 202004008462 U DE202004008462 U DE 202004008462U DE 202004008462 U1 DE202004008462 U1 DE 202004008462U1
Authority
DE
Germany
Prior art keywords
housing
hand tool
electric hand
machine housing
transmission
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.)
Expired - Lifetime
Application number
DE200420008462
Other languages
German (de)
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
Priority to DE200420008462 priority Critical patent/DE202004008462U1/en
Publication of DE202004008462U1 publication Critical patent/DE202004008462U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D17/00Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24Damping the reaction force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B45/00Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/001Housing of the drill, e.g. handgrip
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION 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
    • B25F5/00Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006Vibration damping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2250/00Compensating adverse effects during turning, boring or drilling
    • B23B2250/16Damping of vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2260/00Details of constructional elements
    • B23B2260/062Electric motors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2250/00General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/091Electrically-powered tool components
    • B25D2250/095Electric motors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D2250/00General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/121Housing details

Abstract

The tool has a housing (12) assembled of two shells forming also an integrated handle (14). The transmission unit is accommodated in an individual housing (18) made of steel ad encompassed by the main housing (12). At least one vibration absorbing element (22) in the shape of a small elastic cylinder is positioned between both housings (12, 18), held in place by a pin inserted into its center when the shells are joined.

Description

  • The The invention relates to an electric hand tool device comprising a machine housing in which a motor for driving a tool with a drive spindle coupled, and a transmission for transmitting the drive power The motor is arranged on the drive spindle, and a handle, the is directly or indirectly connected to the machine housing.
  • such Electric hand tool device, which are hand-held Tool devices, are known in the art. In such devices the problem that from the drive motor and gearbox outgoing vibrations as well often also from the processing station via the Transferring machining tool personnel and vibrations on the handle of the machine are noticeable.
  • To dampen such vibrations to the user and leader of such a walk-behind machine, a number of solutions have become known in the art. This is what the example looks like DE 40 00 861 A1 to enclose the motor of a hand tool by a separate motor housing, which is disposed within a housing having the handle envelope. Towards the tool, this is followed by a transmission housing. It can be provided between Hüllgehäuse and engine housing vibration damping elements. In addition, more elastic intermediate layers between the envelope and the gearbox can be provided.
  • adversely Here is that both the gearbox and the engine a separate casing must have.
  • Furthermore, for example, from the DE 100 55 395 A1 a hand tool machine handle is known in which a vibration damping unit is provided between a handle member and a support member, wherein the handle member is attached via the support member to the machine tool.
  • A further embodiment for the provision of a vibration damping for the user of a machine is also from the DE 100 36 078 A1 known, between an handle and the tool device, an insulating device is provided, which separates the handle vibrationally from the electric power tool, here spring elements are provided for vibration damping.
  • Finally, out of the DE 100 29 536 A1 a hand tool with at least one handle known, this handle can be mounted substantially as a second or additional handle on a power tool, the handle itself includes a damping element with which vibrations and vibrations can be damped.
  • task The invention is an alternative solution for damping vibrations of an electric hand tool device for the user of the device to create, which is manufacturing technology simple and a robust Use of the electric hand tool device ensures.
  • The Invention solves This object is achieved by a generic electric hand tool device in which the gearbox is surrounded by a separate gearbox housing that through the machine housing is enclosed.
  • The Electric hand tool points outward only a single case, namely that machine housing in which both the motor for driving a tool and the gearbox, in which the transmission is provided, are arranged. In this way is next to an attractive appearance of the electric hand tool after Outside achieves a particularly good encapsulation of the individual components, whereby these are opposite Dust and dirt are less sensitive.
  • there can according to a preferred embodiment be provided that the machine housing designed as a plastic housing is. In this way, a sturdy exterior with a particular for the User provided pleasant tactile property, the one safe guiding of the electric hand tool device guarantee. Furthermore let yourself such a machine housing cost-effectively manufacture in the form of a two-shell injection molded housing, wherein grip elements can be molded directly.
  • The gearbox can be used as a metal case be formed to ensure sufficient stability.
  • Especially can be provided that between transmission housing and machine housing at least one damping element is arranged. In this way, vibrations, in particular arise in the area of the transmission, so be mitigated that the vibrations do not affect intended gripping elements, over the a user leads the electric hand tool device, be transferred.
  • The damping elements can in a preferred form of rubber-elastic Ele ments, in particular of sleeve-shaped elements, which are arranged between the gear housing and the machine housing, wherein the sleeve-like components are fixed to one of the housing and the other housing has pins which engage in the central openings of the sleeves. In this way, moreover, a definition or centering and arrangement of the two housings to each other is achieved.
  • alternative can also damping elements, for example be provided in cuboid shape or other geometric shapes, the For example, in recesses of both housings are included and about one Determination of the housing ensure each other and their orientation.
  • Especially can be advantageous several damping elements between the machine housing and the transmission housing be arranged to a substantial decoupling vibration the two housings to provide each other. It can be about the adjustment of the damping characteristics the damping elements be ensured that a corresponding electric hand tool with low Exerted effort can be.
  • Especially It is advantageously provided that the handle integrally connected to the machine housing is, in particular formed by the machine housing. To this Way, a particularly simple and cost-effective manufacturing process be used, in particular, the stability of the housing and the leadership position increased by an operator become.
  • Farther can be provided that the transmission with the drive motor via a first axis is connected and the first axis to the axis of the drive spindle at an angle of 45 to 135 °. at Such electric hand tool devices are devices with so-called transverse gear, with a smaller extension in the direction spindle or tool axis, compared to devices, at where the motor and gear axis runs parallel to the tool axis. By leave these smaller dimensions in the direction of the tool axis can handle even difficult installation situations and work situations. About that In addition, such querbaute transmission housing with flanged motor very easy to install and thus inexpensive to produce.
  • Furthermore In this way a real damping of the vibrations is achieved and not, as is common also in the prior art, by a Rubber coating of housing parts a damping merely hinted.
  • Furthermore can also ribs as damping elements be provided.
  • The Invention will be explained in more detail below with reference to an embodiment. Further Advantages and features of the invention will become apparent from the other application documents as well as the following description.
  • there shows:
  • 1 a cut machine housing with already mounted gear and
  • 2 a view along a section on the line AA.
  • 1 shows a partially illustrated electric hand tool device in the form of a percussion drill. The percussion drill comprises a machine housing 12 that envelops the entire impact drill. The machine housing 12 consists of two housing halves, which are positively connected with each other. The housing halves of the machine housing 12 can be produced by injection molding. Through the machine housing 12 becomes a handle at the same time 14 of the electric hand tool device, with which an operator can hold and guide the percussion drill. In addition, the machine housing has 12 handholds 16 in a second area substantially parallel to the first handle area of the handle 14 runs, and where the second hand of an operator can come to rest in order to give the machine even greater stability.
  • In addition, a transmission housing 18 provided in which a two-stage transmission for switching the percussion drill between a first and a second gear is arranged. The gearbox 18 consists of a metallic material to ensure a secure encapsulation and to give the machine greater stability. The gearbox 18 runs coaxially to a spindle axis 20 , which coincides with the tool axis of the percussion drill. This tool axis or spindle axis is not aligned in the hammer drill shown with the motor axis, but the motor axis has an angle α to the spindle axis, which is approximately 120 ° in the machine shown.
  • In such electric hand tool devices with a motor axis which is at a different angle than 180 ° to the spindle axis 20 runs, the space in the direction of the spindle axis 20 be significantly reduced, whereby a work in otherwise difficult to access installation situations is possible.
  • Of the Drive motor and its coupling to the gearbox are not here shown.
  • To the common problem in impact drills, namely a vibration transmission from the transmission to the operator of the power tool via the machine housing 12 To prevent, are damping elements 22 provided that a vibration isolation of the transmission housing 18 from the machine housing 12 make.
  • The damping elements are rubber-elastic elements in sleeve shape, the gear housing 18 are mounted, and in the central opening of a pin on the machine housing 12 molded, engages when assembling the housing halves of the machine housing 12 , In this way, a secure positioning of the machine housing is ensured to the transmission housing.
  • 2 now shows a section along the line AA, in which case the rubber-elastic damping elements 22 between the machine housing 12 and the transmission housing 18 are arranged are shown. In 2 In addition, the opening can 24 be seen, in which the pin 26 , on the machine housing 12 is arranged, engages. In this way, a mounting-friendly system can be provided particularly simple, can be dispensed with the expensive rubberized surfaces, and at the same time there is a safe vibration isolation.

Claims (9)

  1. Electric hand tool device comprising a machine housing ( 12 ), in which a motor for driving a tool, which is coupled to a drive spindle and a transmission for transmitting the drive power from the motor to the drive spindle is arranged and a handle ( 14 ) directly or indirectly connected to the machine housing ( 12 ), characterized in that the transmission by a separate transmission housing ( 18 ) surrounded by the machine housing ( 12 ) is enclosed.
  2. Electric hand tool according to claim 1, characterized in that the transmission housing ( 18 ) is a metal housing.
  3. Electric hand tool according to claim 1 or 2, characterized in that the machine housing ( 12 ) consists of plastic.
  4. Electric hand tool according to one of the preceding claims, characterized in that between transmission housing ( 18 ) and machine housing ( 12 ) at least one damping element ( 22 ) is arranged.
  5. Electric hand tool according to claim 4, characterized in that the at least one damping element ( 22 ) is formed by a rubber-elastic element.
  6. Electric hand tool device according to claim 4 or 5, characterized in that the at least one damping element ( 22 ) consists of a sleeve on the transmission housing ( 18 ) or machine housing ( 12 ) and where on the other housing ( 12 . 18 ) a pen ( 26 ) is provided, which engages in the sleeve.
  7. Electric hand tool according to one of claims 4-6, characterized in that a plurality of damping elements ( 22 ) between the machine housing ( 12 ) and the transmission housing ( 18 ) are arranged.
  8. Electric hand tool according to one of the preceding claims, characterized in that the handle ( 14 ) in one piece with the machine housing ( 12 ), in particular by the machine housing ( 12 ) is formed.
  9. Electric hand tool according to one of the preceding claims, characterized in that the transmission is connected to the drive motor via a first axis and the first axis to the axis ( 20 ) of the drive spindle at an angle (α) of 45 ° to 135 °.
DE200420008462 2004-05-27 2004-05-27 Power tool, comprising separate housing for transmission unit accommodated in main housing Expired - Lifetime DE202004008462U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200420008462 DE202004008462U1 (en) 2004-05-27 2004-05-27 Power tool, comprising separate housing for transmission unit accommodated in main housing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200420008462 DE202004008462U1 (en) 2004-05-27 2004-05-27 Power tool, comprising separate housing for transmission unit accommodated in main housing

Publications (1)

Publication Number Publication Date
DE202004008462U1 true DE202004008462U1 (en) 2005-10-06

Family

ID=35140346

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200420008462 Expired - Lifetime DE202004008462U1 (en) 2004-05-27 2004-05-27 Power tool, comprising separate housing for transmission unit accommodated in main housing

Country Status (1)

Country Link
DE (1) DE202004008462U1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2439434A (en) * 2006-06-16 2007-12-27 Bosch Gmbh Robert Hand machine tool wih damping
DE102006041429A1 (en) * 2006-09-04 2008-03-20 Metabowerke Gmbh Electric hand tool
EP3053709A1 (en) * 2015-02-09 2016-08-10 Panasonic Intellectual Property Management Co., Ltd. Impact rotation tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405922C2 (en) * 1984-02-18 1993-09-16 Robert Bosch Gmbh, 70469 Stuttgart, De
DE4000861C2 (en) * 1990-01-13 1996-10-24 Atlas Copco Elektrowerkzeuge Hand-held impact drill with vibration damping
DE69603751T2 (en) * 1995-12-22 2000-04-06 G Lyle Habermehl Powered hand tool with one switch in the rear part of an ergonomic handle
DE19938176A1 (en) * 1999-08-16 2001-03-08 Bosch Gmbh Robert Hand tool
DE19730356C2 (en) * 1997-07-15 2001-05-17 Wacker Werke Kg Vibration-damped breaker and / or hammer drill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405922C2 (en) * 1984-02-18 1993-09-16 Robert Bosch Gmbh, 70469 Stuttgart, De
DE4000861C2 (en) * 1990-01-13 1996-10-24 Atlas Copco Elektrowerkzeuge Hand-held impact drill with vibration damping
DE69603751T2 (en) * 1995-12-22 2000-04-06 G Lyle Habermehl Powered hand tool with one switch in the rear part of an ergonomic handle
DE19730356C2 (en) * 1997-07-15 2001-05-17 Wacker Werke Kg Vibration-damped breaker and / or hammer drill
DE19938176A1 (en) * 1999-08-16 2001-03-08 Bosch Gmbh Robert Hand tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2439434A (en) * 2006-06-16 2007-12-27 Bosch Gmbh Robert Hand machine tool wih damping
GB2439434B (en) * 2006-06-16 2009-06-03 Bosch Gmbh Robert Hand tool machine
DE102006041429A1 (en) * 2006-09-04 2008-03-20 Metabowerke Gmbh Electric hand tool
EP3053709A1 (en) * 2015-02-09 2016-08-10 Panasonic Intellectual Property Management Co., Ltd. Impact rotation tool
US10335931B2 (en) 2015-02-09 2019-07-02 Panasonic Intellectual Property Management Co., Ltd. Impact rotation tool

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Legal Events

Date Code Title Description
R163 Identified publications notified
R207 Utility model specification

Effective date: 20051110

R150 Term of protection extended to 6 years

Effective date: 20070730

R157 Lapse of ip right after 6 years

Effective date: 20101201