CN102729143A - Power tool - Google Patents

Power tool Download PDF

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Publication number
CN102729143A
CN102729143A CN2012100333392A CN201210033339A CN102729143A CN 102729143 A CN102729143 A CN 102729143A CN 2012100333392 A CN2012100333392 A CN 2012100333392A CN 201210033339 A CN201210033339 A CN 201210033339A CN 102729143 A CN102729143 A CN 102729143A
Authority
CN
China
Prior art keywords
gathering arrester
dust gathering
main shaft
instrument
dust
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.)
Pending
Application number
CN2012100333392A
Other languages
Chinese (zh)
Inventor
武藤英治
仲村真
田伏贤一
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.)
Makita Corp
Original Assignee
Makita Corp
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 Makita Corp filed Critical Makita Corp
Publication of CN102729143A publication Critical patent/CN102729143A/en
Pending 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
    • B24B23/028—Angle tools
    • 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
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • 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
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools

Abstract

The present invention provides a kind of electric tool, can not only improve collection efficiency of the dust in dust gathering arrester, while could be used that pivot stop tool makes main shaft stop operating. In the electric tool, disk tool is installed on the main shaft 16 of motor M, the main shaft 16 is stretched out outward by the cabinet 10 that receipts fill the motor, the dust gathering arrester 20 for covering the disk-like tool is provided on the cabinet 10, tool insert port 24B is provided on the dust gathering arrester 20, the tool insert port 24B is provided with the rubber ring 26 that can make tool insert port freely openable for the stop tool 25 for making main shaft stop operating to be inserted into dust gathering arrester on dust gathering arrester.

Description

Electric tool
Technical field
The present invention relates to a kind of electric tool with dust gathering arrester, the disk-like tool that this dust gathering arrester will be installed on the main shaft covers, and is used for machined object is added the collection that produces dust man-hour.
Background technology
In patent document 1, disclose a kind of grinder, the motor that is contained in the casing through receipts rotates its main shaft, discoid grinding tool is installed on above-mentioned main shaft, and around grinding tool, is coated with dust gathering arrester.In general; Thereby above-mentioned grinder is to keep in touch and make it mobile on machined object machined object to be carried out grinding grinding tool that rotates and machined object; The dust that produces during grinding is collected in the dust gathering arrester, and by take out pipe through with the control of dust tube of dust gathering arrester internal communication with dust collection in precipitron.
Yet; With above-mentioned grinder is in the electric tool of representative; When the locking mechanism that is used to any rotation of main shaft is stopped to break down; For the pivot stop instrument through spanner etc. also can make main shaft stop operating, be provided for that on dust gathering arrester the pivot stop instrument is inserted instrument in the dust gathering arrester and insert mouthful.But be set on the dust gathering arrester owing to instrument inserts mouth, the inside of dust gathering arrester is communicated with through this instrument insertion mouth with outside, thereby the sealing of dust gathering arrester is reduced, and then the generation worry low to dust collection efficiency in the dust gathering arrester.
On the other hand; For the sealing that guarantees dust gathering arrester instrument being inserted mouth closes all the time; Caused the pivot stop instrument not to be inserted in the dust gathering arrester again, thereby when the locking mechanism of main shaft breaks down, can not main shaft stopped operating through using the pivot stop instrument.
Patent documentation 1: the open communique of Japanese patent of invention 2011-56641 number
Summary of the invention
In view of this, the object of the present invention is to provide a kind of electric tool, not only can improve the dust catching efficiency of dust in dust gathering arrester, also can use the pivot stop instrument that main shaft is stopped operating simultaneously.
In the electric tool described in the technical scheme 1 of the present invention; The disk instrument is installed on the electric machine main shaft; This main shaft is stretched out by the casing of receiving this motor of dress laterally, is provided with the dust gathering arrester that covers said disk-like tool at aforementioned casing place, and the instrument that has on this dust gathering arrester inserts mouth; This instrument inserts mouth and is used for being inserted in the aforementioned dust gathering arrester making aforementioned main shaft rotate the stop instrument that stops, and aforementioned dust gathering arrester is provided with the seal opening and closing parts that can make instrument insert mouthful freely openable.
In technical scheme 2, said switching parts are meant that being used to of on said dust gathering arrester, installing makes said instrument insert mouthful ring-shaped rubber parts of sealing.
According to the electric tool described in the technical scheme 1, owing to the switching parts seal the instrument insertion mouth that is arranged on the dust gathering arrester, thereby improved the sealing of dust gathering arrester, and improved the dust catching efficiency of dust in dust gathering arrester thereupon.In addition, the instrument insertion mouth that is arranged on the dust gathering arrester is opened, the stop instrument is inserted mouth by instrument be inserted in the dust gathering arrester, thereby can main shaft stopped operating through this stop instrument through opening and closing parts.
According to technical scheme 2 described electric tools, seal owing to used the rubber components of ring-type that aforementioned tools is inserted mouth, improve the sealing of dust gathering arrester, and improved the dust catching efficiency of dust in dust gathering arrester thereupon.In addition, through the aforementioned rubber components of last volume, can open the instrument that is arranged on the dust gathering arrester and insert mouth.Thereby, can the stop instrument be inserted mouth by instrument and be inserted in the dust gathering arrester, and main shaft stopped operating through this stop instrument.
Description of drawings
Fig. 1 is the side cross-sectional views of the disk grinder of this embodiment of expression;
Fig. 2 is for representing the plane of the dust gathering arrester that above-mentioned disk grinder has;
Fig. 3 is the key diagram of main shaft during by stop of the above-mentioned disk grinder of expression.
[symbol description]
1: disk grinder; 10: shell; 11: electric machine casing; 15: gear housing; 16: main shaft; 20: dust gathering arrester; 24B: instrument inserts mouth; 25: spanner; 26: rubber ring; M: motor.
The specific embodiment
With reference to Fig. 1～Fig. 3 embodiment of the present invention is described.The disk grinder 1 that Fig. 1 representes has: shell 10 and dust gathering arrester 20.Shell 10 is made up of electric machine casing 11 and gear housing 15.Below the example of disk grinder 1 as electric tool of the present invention described.
Electric machine casing 11 is tubular, and its inner receipts is equipped with motor M.The rotating shaft 12 of motor M is supported in the electric machine casing 11 with rotating mode through bearing 13.Be provided with the 1st bevel gear 14 on the top of rotating shaft 12.
Gear housing 15 is installed in the place ahead (left side of Fig. 1) of electric machine casing 11.Rotating shaft 12 is in electric machine casing 11 extend into gear housing 15.Have again, main shaft 16 passes through bearing 17,18 to turn and to be supported in the gear housing 15 with rotating shaft 12 perpendicular states.Upper lateral part at main shaft 16 is equipped with the 2nd bevel gear 19.Through the 1st bevel gear 14 and 19 engagements of above-mentioned the 2nd bevel gear, the rotation of rotating shaft 12 is delivered to main shaft 16.Stretch out to the downside of gear housing 15 lower end of main shaft 16.Outer surface place in main shaft 16 bottoms is provided with external thread part 16A.Discoid grinding tool (not shown) is installed on the main shaft 16 in the above-mentioned disk grinder 1, and through inner flange be screwed on the locking nut sandwich on the external thread part 16A.The explanation that discoid milling tool carries out as an example of disk-like tool of the present invention.
Like Fig. 1 and shown in Figure 2, dust gathering arrester 20 comprises: cover body 21, assist shroud 22, connecting plate 23, cradle portion 24 and rubber ring 26.Cover body 21 and assist shroud 22 are made up of resin material.Be provided with the opening patchhole 21A that main shaft 16 is inserted at the upper surface place of cover body 21.Assist shroud 22 is installed on the cover body 21, and can be with respect to cover body 21 loading and unloading.Be installed in the state on the cover body 21 in assist shroud 22, dust gathering arrester 20 be under shed roughly bowl-shape cover aforementioned grinding tool around, its bowl-shape opening has than the bigger internal diameter of discoid grinding tool external diameter.On the outer surface of cover body 21, be provided with control of dust tube 21B with the internal communication of cover body 21.Above-mentioned control of dust tube 21B can be connected with precipitron through taking out pipe.
Connecting plate 23 is a metal material, is fixed on the upper surface of cover body 21 through 4 screw 23A.On connecting plate 23, have the peristome 23B that is communicated with the patchhole 21A of cover body 21.Cradle portion 24 is a metal material, is with coaxial circular of peristome 23B and with the upside of connecting plate 23 to become one.Cradle portion 24 is chimeric and fastening with screw 24A with the bottom of gear housing 15, thereby makes dust gathering arrester 20 and gear housing 15 in succession.
Like Fig. 1 and shown in Figure 3, connecting plate 23 engages the cradle portion 24 of boundary vicinity with cradle portion 24 root place is provided with an instrument insertion mouthful 24B.Instrument inserts mouthful 24B and is used for spanner 25 is inserted into inside by the outside of dust gathering arrester 20.Have again, rubber ring 26 is inlaid on the outer circumference face of aforementioned brackets portion 24 roots.In the bottom of rubber ring 26, be provided with the flange portion 26A (with reference to Fig. 3) that stretches out to dispersal direction.As shown in Figure 1; Rubber ring 26 closely cooperates with the outer circumference face of aforementioned brackets portion 24 roots; Remain sealing state and make instrument insert a mouthful 24B; Flange portion 26A closely is connected with the upper surface of connecting plate 23 simultaneously, thereby with the clearance seal between rubber ring 26 and aforementioned connecting plate 23 upper surfaces.Above-mentioned rubber ring 26 is explanations of carrying out as an example of ring-shaped rubber parts of the present invention.
Action in the face of disk grinder 1 describes down.When the face that is processed of 1 pair of machined object of above-mentioned disk grinder carries out grinding, control electric machine casing 11 and console switch for starting (ON) state, make motor M work, also make the precipitron operation simultaneously through the operator.Along with the work of motor M, the grinding tool of rotation contacts with the face of being processed and moves above that, thereby carries out grinding to being processed face.The dust that the face that is processed produces when grinding is collected in the precipitron, and this collection process makes dust arrive precipitron by control of dust tube 21B through taking out pipe for through control of dust tube 21B being applied suction and pumping power.At this moment, rubber ring 26 inserts a mouthful 24B sealing with instrument, and flange portion 26A is also with the gap sealing between rubber ring 26 and connecting plate 23 upper surfaces simultaneously.Therefore, the inside of dust gathering arrester 20 is not communicated with the outside, thereby has improved the sealing of dust gathering arrester 20, prevents that dust from dispersing to the outside of dust gathering arrester 20.Above-mentioned structure constitutes the dust collection efficiency that has improved dust gathering arrester 20.
Have again, when the locking mechanism that main shaft 16 any rotations are stopped to break down, need carry out the rotation prevention operation of main shaft 16 through spanner 25.At this moment, as shown in Figure 3, open the instrument insertion mouthful 24B of dust gathering arrester 20 through rolling rubber ring 26.As shown in the figure afterwards, spanner 25 by instrument insert mouthful 24B be inserted in the dust gathering arrester 20 be arranged on main shaft 16 on chamfered section engage, main shaft 16 is stopped operating.Spanner 25 is an example of pivot stop instrument of the present invention.
[effect of this embodiment]
In the disk grinder 1 of this embodiment, rubber ring 26 is used for instrument is inserted a mouthful 24B sealing, thereby can improve the sealing of dust gathering arrester 20, and has improved the dust catching efficiency of dust in dust gathering arrester 20 through said structure setting.Have again, through last volume rubber ring 26, the instrument of can opening inserts the opening of mouthful 24B towards dust gathering arrester 20.And spanner 25 is inserted in the dust gathering arrester 20 through an instrument insertion mouthful 24B, and then main shaft 16 is stopped operating through spanner 25.
The present invention is not limited to above-mentioned embodiment, in the scope that does not break away from purport of the present invention, can make that change of epoch to it.For example, different with above-mentioned embodiment, the O type circle of also available rubber system replaces rubber ring 26, and this O type circle is embedded on the outer circumference face of aforementioned root, thereby makes instrument insert a mouthful 24B sealing through this O type circle.
Different with above-mentioned embodiment again, for example on cradle portion 24, the opening-closing plate that can rotate along the vertical direction is installed, and can be sealed an instrument insertion mouthful 24B freely openable through this opening-closing plate through hinge member.Identical with above-mentioned embodiment, the said structure formation has improved the dust catching efficiency of dust in dust gathering arrester 20, and can main shaft 16 stopped operating through spanner 25.
Have again and also can use the rubber magnet that can on cradle portion 24, load and unload to replace above-mentioned rubber ring 26, this rubber magnet can make an instrument insertion mouthful 24B be opened easily and seal.At this moment, identical with above-mentioned embodiment, the said structure formation has improved the dust catching efficiency of dust in dust gathering arrester 20, and can main shaft 16 stopped operating through spanner 25.Above-mentioned opening-closing plate and rubber magnet open and close an example of parts for the present invention.Have again, in the above-described embodiment, the present invention is an example that is applicable to disk grinder, yet is not limited in this, and the present invention also is applicable to the electric tool of cutting machine with parting tool and dust gathering arrester etc.

Claims (2)

1. electric tool; The disk instrument is installed on the main shaft of motor, and this main shaft is stretched out by the casing of receiving this motor of dress laterally, and said casing is provided with the dust gathering arrester that covers said disk-like tool; The instrument that has on this dust gathering arrester inserts mouth; Said instrument inserts mouth and is used for being inserted in the said dust gathering arrester making said main shaft rotate the stop instrument that stops, and it is characterized in that
Said dust gathering arrester is provided with the seal opening and closing parts that can make instrument insert mouthful freely openable.
2. electric tool according to claim 1 is characterized in that,
Said switching parts are meant that being used to of on said dust gathering arrester, being mounted makes said instrument insert mouthful ring-shaped rubber parts of sealing.
CN2012100333392A 2011-03-31 2012-02-14 Power tool Pending CN102729143A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011079521A JP2012213820A (en) 2011-03-31 2011-03-31 Power tool
JP2011-079521 2011-03-31

Publications (1)

Publication Number Publication Date
CN102729143A true CN102729143A (en) 2012-10-17

Family

ID=45808214

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012100333392A Pending CN102729143A (en) 2011-03-31 2012-02-14 Power tool

Country Status (5)

Country Link
US (1) US20120252328A1 (en)
EP (1) EP2505308A1 (en)
JP (1) JP2012213820A (en)
CN (1) CN102729143A (en)
RU (1) RU2012112407A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019090824A (en) * 2013-10-25 2019-06-13 日本テキサス・インスツルメンツ合同会社 Angle resolution in radar

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5579575B2 (en) * 2010-11-02 2014-08-27 株式会社マキタ Disc grinder
US9314896B2 (en) * 2012-07-03 2016-04-19 Atlas Copco Industrial Technique Ab Power tool
JP6059032B2 (en) 2013-02-01 2017-01-11 株式会社マキタ Electric tool
US9630310B2 (en) 2013-02-01 2017-04-25 Makita Corporation Electric tool
JP6043195B2 (en) 2013-02-01 2016-12-14 株式会社マキタ Electric tool
USD742081S1 (en) 2014-01-15 2015-10-27 Milwaukee Electric Tool Corporation Dust collector
USD741557S1 (en) 2014-01-15 2015-10-20 Milwaukee Electric Tool Corporation Dust collector
DE102016106782A1 (en) * 2016-04-13 2017-10-19 Festool Gmbh Hand machine tool with a cover device
DE102018206869A1 (en) * 2018-05-04 2019-11-07 Robert Bosch Gmbh Easy to mount dust extraction
JP7100527B2 (en) * 2018-08-06 2022-07-13 株式会社マキタ Covers and tools

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US5766062A (en) * 1996-06-13 1998-06-16 Atlas Copco Tools Ab Portable power tool
WO2004087377A1 (en) * 2003-03-31 2004-10-14 Atlas Copco Tools Ab Power grinder with safety guard and spindle arresting means
CN1714999A (en) * 2004-06-29 2006-01-04 株式会社吴英制作所 Hand held forced grinding device
CN1852785A (en) * 2003-09-16 2006-10-25 罗伯特·博世有限公司 Portable power tool with protective cover
CN201015835Y (en) * 2007-03-15 2008-02-06 苏州宝时得电动工具有限公司 Power tool
JP2011056641A (en) * 2009-09-14 2011-03-24 Makita Corp Dust collection cover of disc grinder

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DE10162632A1 (en) * 2001-12-20 2003-07-03 Hilti Ag Grinder with suction hood
JP5162262B2 (en) * 2008-01-22 2013-03-13 日立工機株式会社 Protective cover and electric tool with protective cover
DE102008064564A1 (en) * 2008-12-23 2010-06-24 Flex-Elektrowerkzeuge Gmbh Tool holding head for a hand-held cleaning / grinding machine and hand-held cleaning / grinding machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5766062A (en) * 1996-06-13 1998-06-16 Atlas Copco Tools Ab Portable power tool
WO2004087377A1 (en) * 2003-03-31 2004-10-14 Atlas Copco Tools Ab Power grinder with safety guard and spindle arresting means
CN1852785A (en) * 2003-09-16 2006-10-25 罗伯特·博世有限公司 Portable power tool with protective cover
CN1714999A (en) * 2004-06-29 2006-01-04 株式会社吴英制作所 Hand held forced grinding device
CN201015835Y (en) * 2007-03-15 2008-02-06 苏州宝时得电动工具有限公司 Power tool
JP2011056641A (en) * 2009-09-14 2011-03-24 Makita Corp Dust collection cover of disc grinder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019090824A (en) * 2013-10-25 2019-06-13 日本テキサス・インスツルメンツ合同会社 Angle resolution in radar
JP2021009161A (en) * 2013-10-25 2021-01-28 日本テキサス・インスツルメンツ合同会社 Radar angle resolution
JP7025506B2 (en) 2013-10-25 2022-02-24 テキサス インスツルメンツ インコーポレイテッド Angle resolution in radar

Also Published As

Publication number Publication date
RU2012112407A (en) 2013-10-10
EP2505308A1 (en) 2012-10-03
JP2012213820A (en) 2012-11-08
US20120252328A1 (en) 2012-10-04

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Application publication date: 20121017