CN1065466C - Hand electric tool with dust collecting device - Google Patents

Hand electric tool with dust collecting device Download PDF

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Publication number
CN1065466C
CN1065466C CN96112160A CN96112160A CN1065466C CN 1065466 C CN1065466 C CN 1065466C CN 96112160 A CN96112160 A CN 96112160A CN 96112160 A CN96112160 A CN 96112160A CN 1065466 C CN1065466 C CN 1065466C
Authority
CN
China
Prior art keywords
air
pipe box
out pipe
connector
valve
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 - Fee Related
Application number
CN96112160A
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Chinese (zh)
Other versions
CN1151343A (en
Inventor
K·沃斯特
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN1151343A publication Critical patent/CN1151343A/en
Application granted granted Critical
Publication of CN1065466C publication Critical patent/CN1065466C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
    • A47L9/1436—Connecting plates, e.g. collars, end closures
    • A47L9/1445—Connecting plates, e.g. collars, end closures with closure means
    • A47L9/1454—Self-sealing closures, e.g. valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided

Abstract

A hand machine tool having an extraction nozzle (22), and a dust bag (28) or filtering bag, the opening (30) of which detachably encompasses the extraction nozzle (22), is protected against swarf and dust escaping from the dust bag into the interior of the fan chamber by nozzle (22) having at its free end a valve, which closes the extraction nozzle (22) as soon as the motor of the hand machine tool is switched off. The valve opens the nozzle (22) when the motor is switched back on. The valve is formed by a fitting piece (26) which carries the dust bag. In the absence of air flow, a thin-walled end region (40) of the fitting piece (26) collapses and folds downwards under the effect of gravity.

Description

Electric hand tool with dust exhaust apparatus
The present invention relates to a kind of connector that has dirt bag or filter tunnel and link to each other to accept the electric hand tool of dirt bag or filter tunnel with electric hand tool.
DE-GM 9316626 discloses a kind of electric hand tool with dust exhaust apparatus, its dirt bag or filter tunnel can put by the firm blast pipe that is connected on electric hand tool hermetically, air intake pipe box or fan house can not seal the dirt bits that may flow backwards, the electric hand tool band coupled instinct dirt bag when mobile, and dust and smear metal will enter in air intake pipe box or the fan house.May be in fan house when starting shooting once again stuck blower fan and motor is shut down, cause burning the motor winding, damage electric hand tool or working face.
In addition, also have such harm, after electric hand tool stopped, the dirt bits can retain in air-out pipe box place, as take off the dirt bag, environment around can being thrown to when starting shooting again.
The object of the present invention is to provide a kind of electric hand tool with dust exhaust apparatus, it has simple in structure and connector high efficiency, can prevent the leakage of dirt bits when air stream stops.
According to the present invention, a kind of electric hand tool with air-out pipe box of dress dirt bag or filter bag is provided, the dirt sack detachably is enclosed within discharge pipe and puts, it is characterized in that, the free end of air-out pipe box has valve, as long as in a single day dust suction work stop promptly to close the air-out pipe box, as long as the air-out pipe box is opened in dust suction work at the very start.
According to the present invention, also provide a kind of and be connected to that the electric hand tool discharge pipe puts and be used to admit the connector of dirt bag, it is characterized by, at openend valve is arranged, open the air-out pipe box by the air-out air-flow, close the air-out pipe box during no air-out air-flow.
Have the electric hand tool of the present invention of above-mentioned feature or accept filter bag and the advantage of the connector of dirt bag is; blower fan stops; when being motor shutdown; automatically seal the air-out pipe box of electric hand tool; the sealing fan house; dirt bits can not and enter in the fan house against the direction motion of dirt, do not adorn the dirt bag, when starting shooting again also not can to around the dirt of dishing out consider to be worth doing.
As long as dirt bag and connector together break away from workpiece, connector promptly seals its inlet, the danger that does not have the dirt bits to enter when therefore shifting the dirt bag.
Further describe embodiments of the invention with reference to the accompanying drawings.
Fig. 1 is the skiagraph with electric hand tool of the present invention of dirt bag, and Fig. 2 is the amplification profile diagram at Fig. 1 dirt bag position, the view when Fig. 3 shuts down for Fig. 2 motor, and Fig. 4 is the perspective view of connector of the present invention.
Electric hand tool 10 comprises the casing 11 that has handle 12 among Fig. 1, and its handle 12 is equipped with the release knob 13 of power on/off, its afterbody extracting power supply cord 15.
The abrasive disc 14 of band air suction opening 16 is equipped with in the lower end of electric hand tool 10, drives its abrasive disc 14 by the motor rotation of not drawing in detail.In the fan house 20 of abrasive disc 14 tops, handheld electric tool machine shell 11 bottoms blower fan 18 is arranged, it is driven by above-mentioned motor (not shown), behind the electric motor starting, air is bloated from fan house 20 through air-out pipe box 22, thereby form negative pressure abrasive disc 14 times, tear the scrap on the workpiece.Arrow group 36 shows air-flow or aspirate travel direction.
Air-out pipe box 22 is terminal for exporting 24, overlap by flow export aspirate discharge housing 11 and with connector 26, dirt bag 28 is arranged on the connector 26, its dirt bag 28 is by the liftoff socket connector 26 of its sack 30 anticreeps, have towards the last zone of the dirt bag 28 of handle 12 and to connect plate 32, can insert stand frame 34, and stand frame 34 can be loaded on the zone of casing 11 handles 12 with passing.
Fig. 2 amplifies air-out pipe box 22 zones, and connector firmly cover is connected in this zone, and connector 26 has thick anterior 38 just like shown in the figure section line, wall thickness 2-4mm.
Then the first 38 of connector 26 is second portion 40, and its inside and outside radial opening portion strengthens wall thickness 0.2mm gradually.
The axis that the air-flow of discharging is tubular aligning air-out pipe box 22 by the air-blowing effect flows through the rear section 40 of connector 26.
Fig. 3 is relative with Fig. 2, the motor outage, blower fan 18 quits work, so airless is by air-out pipe box 22 and connect 26, owing to there are not exhaust airstream and air-blowing effect, back thin-walled portion 0 flat the contracting of connector 26, and it is sagging under the gravity effect, thereby seal connector 26 and air-out pipe box 22 as flap, dirt bits just can not come out to enter that air-out pipe box 22 is laggard goes into fan house 20, the hidden danger of having exempted stuck blower fan 18 through connector 26 in the dirt bag 28 like this.
Especially at the ambulatory handheld electric tool, in shutdown but have under the situation of vibration, guaranteed that the dirt bits in the dirt bag 28 can not come out to enter the inside of electric hand tool.
There is a collar 42 connector 26 front portions, and it and sack 30 sockets also prevent dirt bag 28 from coming off and tighten.
Fig. 4 is the perspective view of connector 26, and as seen from the figure, it is cylindrical that the forward part 38 of heavy wall has the seal that coincide with air-out pipe box 22, and 40 transition are cylindrical to the rear section backward for it.Rear section 40 loud-speaker tubulars strengthen to peristome, the band dirt air-flow that flows through to slow down, and prevent that thin dirt from flowing out dirt bag 28.
The rear section 40 of connector 26 forms a curved soft pipeline, when not discharging air-flow, does not have that the air-blowing effect is flat to contract saggingly, plays the flap effect.
Sagging position and degree can be by the ratio decisions of connector length and wall thickness.
There is a tear strip dirt bag bottom to pluck dust settling pocket.

Claims (11)

1. the electric hand tool (10) that has the air-out pipe box (22) of dress dirt bag (28) or filter bag, dirt sack (30) detachably is enclosed within on the air-out pipe box (22), it is characterized in that, the free end of air-out pipe box (22) has valve (26), as long as in a single day dust suction work stop promptly to close air-out pipe box (22), as long as air-out pipe box (22) is opened in dust suction work at the very start.
2. electric hand tool as claimed in claim 1 is characterized by, with diaphragm valve or shutter-type valve as valve (26).
3. electric hand tool as claimed in claim 1 is characterized by, and as valve (26), can be under himself weight effect flat contracts saggingly with thin walled hose, and no air-out air-flow is an air blowing process when interrupting, and sealing air-out pipe box (22) does not allow dirt consider to be worth doing to pass through.
4. electric hand tool as claimed in claim 3 is characterized by, and valve (26) is the hose type valve especially, make the connector anticreep and land and be connected on the air-out pipe box (22), and slip-off preventing ground has dirt bag (28).
5. electric hand tool as claimed in claim 4 is characterized by, and connector (26) flexibly is enclosed within on the air-out pipe box (22) securely with the inwall rubbing action, and especially prevents to pin dirt bag (28) with its outer wall annular protrusion by projection with coming off.
6. as the described electric hand tool of one of claim 1 to 5, it is characterized in that valve (26) is opened by dust-absorbing airflow, does not close when having air-flow.
7. as claim 1 preamble, be connected to connector (26) on the electric hand tool air-out pipe box (22) and that be used to admit dirt bag (28), it is characterized by, valve (40) is arranged at openend, open air-out pipe box (22) by the air-out air-flow, close air-out pipe box (22) during no air-out air-flow.
8. connector as claimed in claim 7, it is characterized by its forward part (38) wall thickness about 2 to 4mm, and cross section and air-out pipe box (22) coincide, particularly make ellipse towards air-out pipe box (22), and its rear section (40) make the curved flexible pipe of circular cross-section, and wall thickness is less than 1mm.
9. connector as claimed in claim 8 is characterized by, and rear section (40) wall thickness 0.1 of connector (26) is to 0.5mm, and diameter is the loud-speaker tubular towards opening direction and strengthens.
10. as the connector of one of above claim, it is characterized in that the material selection rubber plastic.
11. as one of above claim described connector, it is characterized by, between rear section (40) and the forward part (38) bending part arranged.
CN96112160A 1995-08-19 1996-08-19 Hand electric tool with dust collecting device Expired - Fee Related CN1065466C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19530542A DE19530542A1 (en) 1995-08-19 1995-08-19 Hand machine tool with dust extraction device
DE19530542.6 1995-08-19

Publications (2)

Publication Number Publication Date
CN1151343A CN1151343A (en) 1997-06-11
CN1065466C true CN1065466C (en) 2001-05-09

Family

ID=7769890

Family Applications (1)

Application Number Title Priority Date Filing Date
CN96112160A Expired - Fee Related CN1065466C (en) 1995-08-19 1996-08-19 Hand electric tool with dust collecting device

Country Status (5)

Country Link
CN (1) CN1065466C (en)
CH (1) CH691283A5 (en)
DE (1) DE19530542A1 (en)
GB (1) GB2304407B (en)
IT (1) IT1283790B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101096097B (en) * 2006-06-28 2013-12-25 罗伯特·博世有限公司 Dust collection device for handheld electrical tool
CN104227140A (en) * 2014-08-29 2014-12-24 常州武进长城工具有限公司 Dust suction file

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11138435A (en) * 1997-11-07 1999-05-25 Makita Corp Attachment structure for dust collecting bag of power tool having dust collector
DE19941620A1 (en) 1999-09-01 2001-03-08 Bosch Gmbh Robert Hand tool
DE10041906B4 (en) * 2000-08-25 2011-06-09 Hilti Aktiengesellschaft Grinder with dust extraction
DE10047543A1 (en) * 2000-09-22 2002-04-11 Bosch Gmbh Robert Abrasives and abrasives for an electrical grinding tool and electrical grinding tool
GB0228657D0 (en) 2002-12-09 2003-01-15 Black & Decker Inc Planer
DE60301250T2 (en) 2002-12-09 2006-03-30 Black & Decker Inc., Newark planer
ES2285029T3 (en) 2002-12-09 2007-11-16 Black & Decker Inc. BRUSHER
EP1428616B1 (en) 2002-12-09 2007-06-13 Black & Decker Inc. Planer
GB0228654D0 (en) * 2002-12-09 2003-01-15 Black & Decker Inc Planer
GB0228656D0 (en) 2002-12-09 2003-01-15 Black & Decker Inc Planer
US8087977B2 (en) 2005-05-13 2012-01-03 Black & Decker Inc. Angle grinder
JP4747850B2 (en) * 2006-01-20 2011-08-17 日立工機株式会社 Dust collector
DE102007036783A1 (en) * 2007-08-03 2009-02-05 Robert Bosch Gmbh Hand tool with a dust extraction device
CN102615569B (en) * 2012-04-28 2014-03-26 东山电器（珠海）有限公司 High-speed grinding machine
CN103521006A (en) * 2013-10-25 2014-01-22 苏州宇洋环保设备制造有限公司 Spraying-blowing device of bag-type dust remover used for isolating corrosive dust
CN103962621A (en) * 2014-05-09 2014-08-06 陈婷 Planer tool limiter of electric planer
CN105710103A (en) * 2016-01-27 2016-06-29 太仓权阡机械自动化有限公司 Industrial dust remover
US10818450B2 (en) 2017-06-14 2020-10-27 Black & Decker Inc. Paddle switch
CN112720160A (en) * 2020-12-28 2021-04-30 南京顺遂姐商贸有限公司 Polishing equipment for plastic production
CN114274049B (en) * 2022-01-10 2023-03-21 常州赛迪工具有限公司 Electric tool dust collection structure and handheld electric sander with same

Citations (1)

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Publication number Priority date Publication date Assignee Title
US3910360A (en) * 1972-07-19 1975-10-07 Atlas Copco Ab Method and apparatus for collecting and separating dust during air-flushed rock drilling using a vibrating filter

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CH219909A (en) * 1940-03-20 1942-03-15 Purator A G Electric vacuum cleaner.
DE1679527A1 (en) * 1967-12-27 1971-03-18 Gottlieb Herre Device for cleaning textile machines in particular
US4675032A (en) * 1986-09-29 1987-06-23 Southwest Manufacturers & Distributors, Inc. Vacuum cleaner bag with oscillating tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910360A (en) * 1972-07-19 1975-10-07 Atlas Copco Ab Method and apparatus for collecting and separating dust during air-flushed rock drilling using a vibrating filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101096097B (en) * 2006-06-28 2013-12-25 罗伯特·博世有限公司 Dust collection device for handheld electrical tool
CN104227140A (en) * 2014-08-29 2014-12-24 常州武进长城工具有限公司 Dust suction file

Also Published As

Publication number Publication date
CN1151343A (en) 1997-06-11
GB2304407B (en) 1997-09-17
GB9616898D0 (en) 1996-09-25
GB2304407A (en) 1997-03-19
IT1283790B1 (en) 1998-04-30
ITMI961740A1 (en) 1998-02-09
ITMI961740A0 (en) 1996-08-09
DE19530542A1 (en) 1997-02-20
CH691283A5 (en) 2001-06-29

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C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
FG4A Grant of patent
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20010509

Termination date: 20100819