EP0719616A1 - Verbessertes oszillierendes Handwerkzeug - Google Patents

Verbessertes oszillierendes Handwerkzeug Download PDF

Info

Publication number: EP0719616A1
Authority: EP; European Patent Office
Prior art keywords: drive shaft; shoe; drive; face; location hole
Prior art date: 1994-12-24
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

Application number

EP95308370A

Other languages

English (en)

French (fr)

Other versions

EP0719616B1 (de

Inventor

Eric Cockburn

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.)

1994-12-24

Filing date

1995-11-22

Publication date

1996-07-03

1995-11-22 Application filed by Black and Decker Inc filed Critical Black and Decker Inc

1995-11-22 Priority to DE29521328U priority Critical patent/DE29521328U1/de

1996-07-03 Publication of EP0719616A1 publication Critical patent/EP0719616A1/de

1997-12-29 Application granted granted Critical

1997-12-29 Publication of EP0719616B1 publication Critical patent/EP0719616B1/de

2015-11-22 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor

Definitions

the present invention relates to a powered oscillating hand tool, in particular an orbital sander, comprising a drive unit having an electric motor with a drive shaft to which a working head, for example a sanding shoe can be attached.
the drive system comprises an eccentric which is restrained so that the sander shoe cannot spin independently of the motor and it therefore describes a regular orbit.
the shoes of such sanders are available in a range of shapes and such sanders are in general used for the removal of relatively small quantities of material, for example for detailed work or for finishing. By choice of a suitably shaped shoe, it is possible to access areas which are inaccessible with a random orbit sander.
the restraining mechanism by which the eccentric is restrained so that the sander shoe cannot spin independently of the motor and therefore describes a regular orbit generally comprises a co-operating array of legs and spigots on the shoe and the sander body respectively.
the location hole on the shoe, in which the drive shaft locates it is necessary for the location hole on the shoe, in which the drive shaft locates, to be centrally positioned on the shoe. This leads to difficulties in locating the location hole of the shoe on the second (eccentric) drive shaft at the same time as locating the corresponding legs and spigots.
For the shaft to match the location hole on the shoe it is necessary to deform the legs during this location.
sanders have hence been either of the orbital type as described above, with a fixed shoe or of the random orbit type in which a circular platen is driven by a drive system which comprises an eccentric bearing so that the platen can spin independently of the motor, and the platen describes a random orbit.
the drive shaft to which the sander head is attachable, and the hole by which the head is mounted on the shaft are each of generally circular section, flatted on opposite faces to assist in retaining the head on the sander.
This design is more expensive to manufacture than a circular section and has the further disadvantage that when the user locates the head on the shaft, it is necessary to align the opposed flats on the shaft and head correctly, in order to avoid damage to the head or the shaft.
It is an object of the present invention to provide a powered oscillating hand tool comprising a drive unit having an electric motor with a drive shaft to which a sander head can be attached, in which the attachment means by which the sander head is attachable to the drive shaft is particularly convenient.
the present invention therefore provides a powered oscillating hand tool comprising
the attachment means according to the invention by which the sander head is attachable to the drive shaft is suitable for use in any powered oscillating hand tool which is provided with interchangeable heads and is particularly suitable for use in a dual function powered oscillating hand tool comprising
the invention thus provides a powered oscillating power tool which can easily be fitted with an orbital sander shoe or with an alternative sander head, such as a differently shaped sanding shoe or a random orbit sander head without requiring deformation of the restraining legs.
Figures 1 and 2 show a drive unit (2) including an electric motor (not shown) located in upper housing (4) and driving shaft (6).
a fan (8) mounted on shaft (6) is arranged to draw air in from mouth (10) of lower housing (12) and direct it through extractor duct (14) to exhaust outlet (16).
a screw (18) and washer (20) are used to secure a sanding shoe (22) to a second drive shaft (24) which is housed in the fan (8) by bearing (26) which is eccentrically located radially in respect to shaft (8).
the second drive shaft (24) comprises a first section (28), a flange (30) and a drive spigot (32).
a first end (34) of the first section (28) is adapted for mounting in the bearing (26) and the flange (30) is mounted on the first section (28) at the second end (36) of the first section.
the second drive shaft (24) terminates in a drive spigot (32).
Two pairs of spigots (40) are arranged in an array within the lower housing (12), around the mouth (10) of the housing (12).
the sanding shoe (22) is provided with a location hole (42) for location of the drive spigot (32).
Two pairs of hollow, tapering, flexible columns (44) made of rubber are arranged, in an array matching that of the housing spigots (40), on the backing face (46) of the shoe (22).
a perforated sandpaper sheet may be attached to the outer face (50) of the shoe (22), for ex ample by the use of hook-and-loop fabric such as that sold as VELCRO (RTM) glued to face (50). Holes (52) passing through the shoe (22) facilitate the removal of dust etc, from the sanding face through the shoe (22) to exhaust outlet (16) via the duct (14). An extractor hose (not shown) may be attached to the exhaust outlet (16).
the second drive shaft (24) comprises a first section (28), a flange (30) and a drive spigot (32).
a first end (34) of the first section (28) is adapted for mounting in the bearing (26) and the flange (30) is mounted on the first section (28) at the second end (36) of the first section.
the second drive shaft (24) terminates in the drive spigot (32).
the drive spigot (32) tapers from a diameter d 1 at its face adjoining the flange (30) to a diameter d 2 at its free end.
the location hole (42) of the shoe (22) has a diameter d 3 at the backing face (46) of the shoe (22), and a diameter d 4 at the outer face (50) of the shoe (22 .
the motor axis A M is offset from the axis A B of the eccentric bearing (26) by a radial eccentricity e.
the flexible columns (44) are located on the spigots (40) and the drive spigot (32) of the second drive shaft (24) is aligned sufficiently with the location hole (42) of the shoe (22) for the drive spigot (32) to be guided into the location hole (4) as the screw (18) is tightened and the shoe (22) secured to the second drive shaft (24).
the powered oscillating hand tool according to the invention is particularly adapted for use with sanding heads such as orbital sanding shoes and random orbit sanding platens, it is of course within the scope of the invention to provide a tool to which further alternative oscillating heads can be attached.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

EP19950308370 1994-12-24 1995-11-22 Verbessertes oszillierendes Handwerkzeug Expired - Lifetime EP0719616B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
DE29521328U DE29521328U1 (de)	1994-12-24	1995-11-22	Verbessertes oszillierendes, handgeführtes Werkzeug

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GBGB9426259.9A GB9426259D0 (en)	1994-12-24	1994-12-24	Improved oscillating hand tool
GB9426259		1994-12-24

Publications (2)

Publication Number	Publication Date
EP0719616A1 true EP0719616A1 (de)	1996-07-03
EP0719616B1 EP0719616B1 (de)	1997-12-29

Family

ID=10766622

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19950308370 Expired - Lifetime EP0719616B1 (de)	1994-12-24	1995-11-22	Verbessertes oszillierendes Handwerkzeug

Country Status (3)

Country	Link
EP (1)	EP0719616B1 (de)
DE (1)	DE69501313T2 (de)
GB (1)	GB9426259D0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2000071296A1 (de) *	1999-05-19	2000-11-30	Vaassen, Eugen	Vibrationsvorrichtung
EP1674202A1 (de) *	2004-12-23	2006-06-28	Black & Decker, Inc.	Modularer Aufbau eines Handschleifgerätgehäuses
NL1030176C2 (nl) *	2005-10-12	2007-04-17	Bosch Gmbh Robert	Handgereedschap met verbeterde aandrijving.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102008012784A1 (de)	2008-03-05	2009-09-10	Kwm Entwicklungs-, Vertriebs- Und Service Gmbh	Verfahren zum Herstellen einer Arbeitsgerätschaft

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1194150A (en)	1967-12-18	1970-06-10	Gaf Corp	Stilbene Monoazo Dyestuffs
FR2104073A5 (de) *	1970-08-08	1972-04-14	Bosch
DE3805926A1 (de) *	1988-02-25	1989-09-07	Bosch Gmbh Robert	Handaggregat mit oszillierender werkzeugbewegung
EP0525328A1 (de) *	1991-06-05	1993-02-03	Robert Bosch Gmbh	Exzenterschleifer

1994
- 1994-12-24 GB GBGB9426259.9A patent/GB9426259D0/en active Pending
1995
- 1995-11-22 EP EP19950308370 patent/EP0719616B1/de not_active Expired - Lifetime
- 1995-11-22 DE DE1995601313 patent/DE69501313T2/de not_active Expired - Lifetime

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1194150A (en)	1967-12-18	1970-06-10	Gaf Corp	Stilbene Monoazo Dyestuffs
FR2104073A5 (de) *	1970-08-08	1972-04-14	Bosch
DE3805926A1 (de) *	1988-02-25	1989-09-07	Bosch Gmbh Robert	Handaggregat mit oszillierender werkzeugbewegung
EP0525328A1 (de) *	1991-06-05	1993-02-03	Robert Bosch Gmbh	Exzenterschleifer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2000071296A1 (de) *	1999-05-19	2000-11-30	Vaassen, Eugen	Vibrationsvorrichtung
EP1674202A1 (de) *	2004-12-23	2006-06-28	Black & Decker, Inc.	Modularer Aufbau eines Handschleifgerätgehäuses
US7198559B2 (en)	2004-12-23	2007-04-03	Black & Decker, Inc.	Modular sander-casing architecture
CN1792568B (zh) *	2004-12-23	2012-04-25	布莱克和戴克公司	组合式打磨机外壳结构
NL1030176C2 (nl) *	2005-10-12	2007-04-17	Bosch Gmbh Robert	Handgereedschap met verbeterde aandrijving.
WO2007043871A1 (en) *	2005-10-12	2007-04-19	Robert Bosch Gmbh	Hand tool with improved drive

Also Published As

Publication number	Publication date
GB9426259D0 (en)	1995-02-22
DE69501313D1 (de)	1998-02-05
DE69501313T2 (de)	1998-04-16
EP0719616B1 (de)	1997-12-29

Legal Events

Date	Code	Title	Description
1996-05-17	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1996-07-03	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): DE FR GB IT
1996-12-04	17P	Request for examination filed	Effective date: 19961007
1997-01-02	17Q	First examination report despatched	Effective date: 19961113
1997-05-24	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1997-06-19	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1997-06-19	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1997-09-09	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1997-11-07	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1997-12-29	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB IT
1998-01-20	ITF	It: translation for a ep patent filed	Owner name: GUZZI E RAVIZZA S.R.L.
1998-02-05	REF	Corresponds to:	Ref document number: 69501313 Country of ref document: DE Date of ref document: 19980205
1998-03-06	ET	Fr: translation filed
1998-11-06	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1998-11-06	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1998-12-23	26N	No opposition filed
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