GB2428992A - Electric hand tool with pot housing part and shell housing part - Google Patents
Electric hand tool with pot housing part and shell housing part Download PDFInfo
- Publication number
- GB2428992A GB2428992A GB0615637A GB0615637A GB2428992A GB 2428992 A GB2428992 A GB 2428992A GB 0615637 A GB0615637 A GB 0615637A GB 0615637 A GB0615637 A GB 0615637A GB 2428992 A GB2428992 A GB 2428992A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric hand
- hand tool
- pot
- housing part
- extension
- 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
Links
- 239000004519 grease Substances 0.000 claims abstract description 16
- 238000005461 lubrication Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
An electric hand tool comprises a plurality of separable housing parts, with at least two mutually associated housing-side shell elements 10 and a housing-side pot element 11. A housing part 20b of the pot element 11 at least partially externally encompasses a housing part 20a of the shell elements 10. Preferably an extension 12 of the shell elements 10 tightly surrounds gear wheels 15 of a gear unit 13, and the pot element 11 may form a termination for a grease region (14, fig 1a) disposed in the extension 12.
Description
Electric hand tool 2428992
Background art
The invention proceeds from an electric hand tool according to the preamble of claim 1.
According to the background art, electric hand tools are known, which are designed either as shell-type machines or as pot-like machines. Shelltype machines comprise a housing-side shell element, which surrounds corresponding functional modules in a shell-like manner. In the case of a pot-type machine, the functional modules of the electric hand tool are disposed in a housing-side pot element.
Electric hand tools having a plurality of separable housing parts are also known, wherein at least one housing-side shell element and one housing-side pot element are formed, which are separate from one another.
Advantages of the invention In the electric hand tool according to the invention, a housing part of a pot element at least partially externally encompasses a housing part of a shell element. In this case, for example two mutually associated shell elements surround the interior of the electric hand tool in the corresponding housing part. The shell elements have a dividing seam in axial direction. A pot element, on the other hand, has a division at right angles to the axial direction. Advantageously, according to the invention the pot element is designed circumferentially larger than the shell element, thereby allowing improved lubrication of the gear unit. This is because the circumferential region, in which the pot element encompasses the shell element, is of a double-walled design. A grease compartment disposed in the shell part is therefore restricted to only less room than in electric hand tools, in which the grease compartment is disposed up to the single-walled housing part. The lubricant and/or grease therefore advantageously remains in the vicinity of the components to be supplied, for example of a gear unit, and so the lubrication may be improved and in particular rapid running-dry of the gear unit may be prevented. This advantageously leads also to a longer life of the components, for example gear wheels, without the design being adversely affected thereby.
In a preferred manner, the region of the shell element encompassed by the pot element engages as an extension of the shell element into the pot element, wherein the shell element and the pot element are strung axially together.
The extension is advantageously no longer visible from the outside. The extension of the shell element therefore advantageously has to meet only the technical requirements, without a designer appearance having to be taken into account. In the interior, on the other hand, an optimum amount of overall space is achieved. In the visible part, on the other hand, i.e. in the pot element discernible from the outside, the electric hand tool may satisfy ergonomic requirements and have a designer appearance.
Preferentially, a gear unit is disposed in the shell element, wherein the extension delimits a grease region of the shell element that is disposed in the gear unit. In particular, the extension may tightly surround gear wheels of the gear unit. In a particularly preferred embodiment, a termination for the grease region disposed in the extension may be disposed in the pot element, wherein the grease region is workingly Connected to the extension. The working connection arises by virtue of the grease remaining in the immediate vicinity of the gear wheels, this having the initially mentioned positive effects upon the lubrication.
In an advaftageous development, the shell element and the pot element may be connectable to one another without a tool, for example by means of a bayonet-catch_j connection, a plug-in connection or a locking device, wherein the housing parts of the shell element and of the pot element are locked against mutual rotation.
Drawings Further embodiments, aspects and advantages of the invention arise also independently of their grouping in claims, without restricting the generality, from embodiments of the invention that are represented below by way of drawings.
The drawings show: Figs. la,b,c a view of a shell part of an embodiment of an electric hand tool in a side view (Fig. la), a front view (Fig. ic) and a perspective view laterally from above (Fig. ib); and Figs. 2a,b a view of a pot part in the embodiment according to Fig. 1 in a side view (Fig. 2a) and a front view (Fig. 2b)
Description of the embodiment
Figs. la, b, c show in various perspectives a shell element 10 of an electric hand tool according to the invention, in the housing part 20a of which a drive unit 16 that is not visible in Fig. 1, for example an electric motor, and a gear unit 13 are disposed. Figs. 2a, b show in each case a pot element 11 in various perspectives, the housing part 20b of which comprises supports and/or bearings for a drive shaft (not shown) The shell element 10 and the pot element 11 in the assembled state are strung axially together and non- positively and/or positively connectable to one another, wherein assembly is effected preferentially without a tool, for example by means of a bayonet-like catch, or requires only a single assembly tool. In the assembled state, which is not shown in the drawings, the housing parts 20a, 20b have a substantially cylindrical cross section. According to the invention, in this case a housing part 20a of the pot element 11 at least partially externally encompasses a housing part 20b of the shell element 10. The region of the shell element 10 encompassed by the pot element 11 in said case engages as an extension 12 of the shell element 10 into the pot element 11. The extension 12 is outlined by a dashed line in Fig. la and is part of the shell element 10. The extension 12 is in particular of a circumferentially smaller design than the housing part 20b of the pot element 11 that encompasses the extension 12. A projection 17 on the upper circumference of the housing part 20a of the shell element 10 is so disposed that, when the pot element 11 is pushed on, it overlaps the pot element 11 in the region 18. A secure connection is therefore established between the shell element 10 and the pot element 11.
Because the extension 12 in the assembled state is not visible from the outside, it does not have to meet any designer requirements. Rather, the design of the extension 12 may be adapted to the technical requirements.
The extension 12 delimits in particular a grease region 14 of the shell element 10 that is disposed in the gear unit 13. The extension 12 surrounds gear wheels 15 of the gear unit 13 as tightly as possible. The pot element 11 therefore forms a termination for the grease region 14 disposed in the extension 12. The grease region 14 is therefore of smaller dimensions than in the known electric hand tools. Because of this dimensioning of the grease region 14, the grease therefore remains in the vicinity of the gear wheels 15, thereby preventing the gear unit 13 from rapidly running dry.
Claims (9)
- Claims 1. Electric hand tool having a plurality of separable housingparts, comprising at least two mutually associated housing-side shell elements (10) and a housing-side pot element (11), characterized in that a housing part (20a) of the pot element (11) at least partially externally encompasses a housing part (20b) of the shell element (10)
- 2. Electric hand tool according to claim 1, characterized in that the region of the shell element (10) encompassed by the pot element (11) engages as an extension (12) of the shell element (10) into the pot element (11)
- 3. Electric hand tool according to claim 1 or 2, characterized in that a gear unit (13) is disposed in the shell element (10)
- 4. Electric hand tool according to one of claims 2 or 3, characterized in that the extension (12) delimits a grease region (14) of the shell element (10) that is disposed in the gear unit (13)
- 5. Electric hand tool according to one of claims 2 to 4, characterized in that the extension (12) tightly surrounds gear wheels (15) of the gear unit (13)
- 6. Electric hand tool according to one of claims 4 or 5, characterized in that the pot element (11) forms a termination for the grease region (14) disposed in the extension (12)
- 7. Electric hand tool according to one of claims 4 to 6, characterized in that the grease region (14) is so disposed that it is workingly connected to the extension (12)
- 8. Electric hand tool according to one of the preceding claims, characterized in that the shell element (10) and the pot element (11) are Connectable to one another without a tool.
- 9. An electric hand tool substantially as herein described with reference to the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005037255A DE102005037255A1 (en) | 2005-08-08 | 2005-08-08 | Power tool |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0615637D0 GB0615637D0 (en) | 2006-09-13 |
GB2428992A true GB2428992A (en) | 2007-02-14 |
GB2428992B GB2428992B (en) | 2007-11-21 |
Family
ID=37027344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0615637A Active GB2428992B (en) | 2005-08-08 | 2006-08-04 | Electric Hand Tool |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070193760A1 (en) |
CN (1) | CN1911604B (en) |
DE (1) | DE102005037255A1 (en) |
GB (1) | GB2428992B (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0502363A1 (en) * | 1991-03-04 | 1992-09-09 | ATLAS COPCO ELEKTROWERKZEUGE GmbH | Hand-held electrical tool with housing piece made of elastically deformable material |
EP1236545A2 (en) * | 2001-03-02 | 2002-09-04 | Black & Decker Inc. | Power tool body |
US20030117708A1 (en) * | 2001-12-21 | 2003-06-26 | Koninklijke Philips Electronics N.V. | Sealed enclosure for a wire-grid polarizer and subassembly for a display system |
DE10341386A1 (en) * | 2003-09-05 | 2005-04-07 | Hilti Ag | Hand-held tool, e.g. nail/rivet setter has housing of two shells connected in working direction by sleeve-shaped housing part to reduce size |
EP1627710A1 (en) * | 2004-08-17 | 2006-02-22 | TechTronic Industries, Co., Ltd | Modular tool assembly having a vacuum mounting arrangement |
GB2423274A (en) * | 2005-02-22 | 2006-08-23 | Bosch Gmbh Robert | Housing for a hand-held machine tool |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2346778A (en) * | 1942-10-16 | 1944-04-18 | Independent Pneumatic Tool Co | Portable hand held electric tool |
US2456571A (en) * | 1947-09-13 | 1948-12-14 | Singer Mfg Co | Portable electric tool |
US3908139A (en) * | 1974-06-10 | 1975-09-23 | Singer Co | Portable power tools |
US4730134A (en) * | 1987-05-28 | 1988-03-08 | The Singer Company | Portable power tool with combination bearing plate, nut plate and auxiliary handle mount |
JP2638750B2 (en) * | 1994-10-13 | 1997-08-06 | リョービ株式会社 | Power tool handle structure |
US6139359A (en) * | 1999-04-08 | 2000-10-31 | Snap-On Tools Company | Cordless screwdriver and multi-position battery pack therefor |
US6446734B1 (en) * | 1999-11-11 | 2002-09-10 | Black & Decker Inc. | Motor/handle housing and gear case mounting for portable power tool |
US6729812B2 (en) * | 1999-12-06 | 2004-05-04 | Theodore G. Yaksich | Power driver having geared tool holder |
US6443239B1 (en) * | 2000-02-29 | 2002-09-03 | S.P. Air Kabusiki Kaisha | Pneumatic rotary tool |
DE10021356A1 (en) * | 2000-05-02 | 2001-11-08 | Hilti Ag | Rotating electric hand tool device with safety routine has revolution rate dependent coupling in force transfer path from electric motor to gearbox for transferring torque |
CN2420088Y (en) * | 2000-05-15 | 2001-02-21 | 铨宝工业股份有限公司 | Electric drill base casing structure with cladding clamp |
US6733414B2 (en) * | 2001-01-12 | 2004-05-11 | Milwaukee Electric Tool Corporation | Gear assembly for a power tool |
JP4169184B2 (en) * | 2001-11-15 | 2008-10-22 | 株式会社マキタ | Impact tool |
DE10260706C5 (en) * | 2002-12-23 | 2019-03-14 | Hilti Aktiengesellschaft | transponder receptacle |
JP3963323B2 (en) * | 2003-02-07 | 2007-08-22 | 株式会社マキタ | Electric tool |
JP4084319B2 (en) * | 2004-02-23 | 2008-04-30 | リョービ株式会社 | Electric tool |
US7077218B2 (en) * | 2004-05-20 | 2006-07-18 | Black & Decker Inc. | Motor housing and assembly process for power tool |
-
2005
- 2005-08-08 DE DE102005037255A patent/DE102005037255A1/en active Pending
-
2006
- 2006-08-02 US US11/497,895 patent/US20070193760A1/en not_active Abandoned
- 2006-08-04 GB GB0615637A patent/GB2428992B/en active Active
- 2006-08-08 CN CN200610110704XA patent/CN1911604B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0502363A1 (en) * | 1991-03-04 | 1992-09-09 | ATLAS COPCO ELEKTROWERKZEUGE GmbH | Hand-held electrical tool with housing piece made of elastically deformable material |
EP1236545A2 (en) * | 2001-03-02 | 2002-09-04 | Black & Decker Inc. | Power tool body |
US20030117708A1 (en) * | 2001-12-21 | 2003-06-26 | Koninklijke Philips Electronics N.V. | Sealed enclosure for a wire-grid polarizer and subassembly for a display system |
DE10341386A1 (en) * | 2003-09-05 | 2005-04-07 | Hilti Ag | Hand-held tool, e.g. nail/rivet setter has housing of two shells connected in working direction by sleeve-shaped housing part to reduce size |
EP1627710A1 (en) * | 2004-08-17 | 2006-02-22 | TechTronic Industries, Co., Ltd | Modular tool assembly having a vacuum mounting arrangement |
GB2423274A (en) * | 2005-02-22 | 2006-08-23 | Bosch Gmbh Robert | Housing for a hand-held machine tool |
Also Published As
Publication number | Publication date |
---|---|
GB2428992B (en) | 2007-11-21 |
GB0615637D0 (en) | 2006-09-13 |
DE102005037255A1 (en) | 2007-02-15 |
US20070193760A1 (en) | 2007-08-23 |
CN1911604A (en) | 2007-02-14 |
CN1911604B (en) | 2012-05-09 |
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