CN101255681B - Hand-held power tool and protective device for a hand-held power tool - Google Patents
Hand-held power tool and protective device for a hand-held power tool Download PDFInfo
- Publication number
- CN101255681B CN101255681B CN200810005668XA CN200810005668A CN101255681B CN 101255681 B CN101255681 B CN 101255681B CN 200810005668X A CN200810005668X A CN 200810005668XA CN 200810005668 A CN200810005668 A CN 200810005668A CN 101255681 B CN101255681 B CN 101255681B
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- CN
- China
- Prior art keywords
- protective element
- shell
- work implements
- buffer area
- described work
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0809—Loosening or dislodging by blowing ; Drying by means of gas streams
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Portable Power Tools In General (AREA)
Abstract
The invention relates to a hand-held power tool, comprising at least one of rotatably driven blower wheels (12, 18) and a drive motor (7) arranged in the housing (2) of the power tool. The housing has at least one area provided with openings allowing passage of air conveyed by the blower wheels (12, 18). Protective devices (16, 36, 46) are arranged on an exterior wall of the housing (2), wherein the protective devices have damping areas (28) and the damping areas protect the housing (2) in the area provided with the openings (14, 15) from mechanical impact loads. The protective devices (16, 36, 46) are provided with at least one mechanism for fixing the protective device (16) on the housing (2) of the power tool.
Description
Technical field
The present invention relates to a kind of manual working machine, it has at least one blast wheel and is arranged on the interior CD-ROM drive motor of shell of work implements, wherein the shell of work implements has at least one zone, is provided with opening in this zone, is used for allowing the air by the blast wheel input pass.The invention still further relates to a kind of protective element that is used for manual working machine.
Background technology
By the known a kind of manual working machine of DE 199 59 557 A1, i.e. blast fan, its shell has suction windows.In the zone of suction windows, the structure of shell is more weak.Under the situation that shell is made of plastics, must ruggedized construction or take similar measure, guarantee that shell has enough stability.In the zone of suction windows, the impact load of bearing point-like on shell may make shell damage.
Summary of the invention
The objective of the invention is, a kind of manual working machine of described type is provided, it can prevent the infringement of mechanical load effectively.Another task of the present invention is, a kind of protective element is provided, and is used for protecting the shell of manual working machine not to be subjected to the infringement of mechanical load.
For work implements; this purpose is achieved by such work implements; promptly the lateral surface of the shell of work implements is provided with protective element, and this protective element has buffer area, and wherein buffer area is protecting shell not damaged by mechanical impact load in having the zone of opening.For protective element; this purpose is achieved by such protective element, promptly is provided with buffer area to protective element, is used for protecting the shell of work implements not damaged by mechanical load; also be provided with at least one mechanism, be used for protective element is fixed on the shell of work implements.
In order to bear the mechanical load on the shell effectively, for example impact load of point-like or similar load, suggestion is provided with protective element on the lateral surface of shell.This protective element has buffer area, and it is from mechanical aspects protecting sheathing in the opening scope.This buffer area is dispersed in the bigger scope impact load, therefore can avoid strong point-like load.Go back the impact of available buffer collision simultaneously.This protective element also can be arranged on the existing work implements afterwards, is used for it is remilitarized.
The present invention proposes, and blast wheel is a blast fan, and it carries cooling air for CD-ROM drive motor.Alternative or additional is, blast wheel can be set, the control air of its transportation work facility, particularly when this work implements be blast fan, suction fan and/or ejector.Air can or blow out by this opening inspiration.
Protective element with buffer area is favourable, and particularly for such work implements, promptly its shell has the support portion in the opening scope, and separate single opening mutually this support portion.This can the weaken structure of shell of support that lattice-shaped arranges that is especially.Utilize protective element, can in the zone of this reduction, realize the enough stability of shell, and it is excessive to allow the support portion be configured, or makes by firmer material.Protective element is arranged in the outstanding outwardly zone of shell, is particularly advantageous.Zone outstanding outwardly on the shell is easy to damage for mechanical load, if this shell and other object bump against or drop, then may be damaged.This mechanical load can effectively obtain receiving by protective element.Therefore, shell can constitute with the wall thickness of relative thin on the whole, thereby weight is lighter.This work implements for portable is particularly advantageous, because the user must have been carried the whole weight of work implements.
What meet purpose is that CD-ROM drive motor is an internal combustion engine.The present invention proposes, and work implements has the starting device that is used for internal combustion engine, and wherein protective element is arranged on the shell in the zone of starting device.In the zone of starting device, be provided with cold air openings usually.Manual starting device has the handle of starting usually, can make the motion of rope roller by it.Be directly delivered on the rope roller in order to ensure power, starting device is usually placed in the zone of lateral surface of shell, and outstanding from the outer cover body.Therefore this zone is subjected to the infringement of mechanical load easily.
The buffer area of protective element is preferably made by elastomeric material to small part.This elastomeric material is preferably by rubber or thermoplastic elastomer body (Elastomer).Elastomeric material impact effectively cushions, and disperses impact energy effectively.Therefore can avoid the excessive loads on the single zone of shell.This elastomeric material has light relatively weight, and the weight of shell that therefore has protective element is lighter, therefore can construct more stablely, promptly heavy wall and have reinforcing, also can stop higher impact force.Protective element has the first and second different materials of mechanical property especially.Therefore protective element can be matched with power to be accepted better.Can stipulate that also the buffer area of protective element is configured to solid.But too advantageously, buffer area has at least one cavity.By suitably constructing the cavity of protective element, can allow the buffer area of protective element obtain the damping characteristics of coupling targetedly.By cavity suitably is set, also can realize elasticity, so the material of protective element itself only needs very low elasticity just passable by a cavity.
Advantageously, protective element can be from being fixed on the shell with unclamping.Therefore, can not stand the work of very high mechanical load, can take off protective element for the shell of those work implements.Therefore in this course of work, can reduce the weight of work implements.Advantageously, protective element is fastened on the shell by kayser.What meet purpose is, protective element has at least one kayser pin, and it snaps onto on one of the opening of shell.Be the fixed protection element, can utilize the opening that has existed always.Needn't extra device be set for fixing on shell.But can stipulate that also the protective element on the shell is connected and fixed by bonding.Protective element preferably is sprayed on the shell.
For the protective element that is used for manual working machine; the regulation protective element has buffer area; be used for protecting the shell of work implements not to be subjected to the infringement of mechanical load, also the regulation protective element has at least one mechanism, is used for protective element is fixed on the shell of work implements.Protective element can be fixed on the shell of work implements by this mechanism, and exactly especially like this, promptly protective element is being protected the shell of work implements in bearing the more weak zone of high mechanical load or structure.Therefore simple mode is protected the shell of work implements not to be subjected to the infringement of mechanical load, and is prevented to damage shell thus.
Advantageously, the mechanism that is used for fixing is meant and is used for releasably carrying out stationary device.Therefore, when the work implements duration of work only need apply very little mechanical load, this protective element can be taken off from the shell of work implements once more.According to application target, protective element can be fixed on the shell of work implements or take off above it.Advantageously, this mechanism has at least one grab.This grab is arranged on the kayser pin especially, and wherein the kayser pin is fixed in the buffer area.Advantageously, this buffer area constitutes ring-type.The circulus of buffer area can be used the material of less protective element to be implemented in the bigger relatively scope work implements is protected.Therefore protective element can be configured simple and simple and easy.Buffer element can for example constitute circular or oval ring-type.
Description of drawings
By accompanying drawing realization example of the present invention has been described below.Wherein:
The phantom drawing of Fig. 1 blast fan;
The schematic sectional view of Fig. 2 blast fan;
The partial view of blast fan among Fig. 3 Fig. 1 in the starting device scope;
The shell of blast fan among Fig. 4 Fig. 1 in the starting device scope;
The simplified cross-sectional view of the shell of Fig. 5 blast fan in the starting device scope;
The phantom drawing of Fig. 6 and Fig. 7 protective element;
The schematic sectional view of an embodiment of Fig. 8 and Fig. 9 protective element.
The specific embodiment
The work implements of the handhold portable shown in Fig. 1 is a blast fan.But the present invention can also be other manual working machine, for example suction fan, air draught/blast fan, electric saw, cutting machine or similar machine.Blast fan 1 has shell 2, and blast pipe 3 is fixed on this shell.Blast fan 1 is by blast pipe 3 transportation work air.Be the transportation work air, in shell 2, be provided with the CD-ROM drive motor 7 that schematically illustrates among Fig. 1.This CD-ROM drive motor constitutes internal combustion engine.But this CD-ROM drive motor 7 can also be the four-stroke engine of four-stroke engine, particularly mixed lubrication.
On shell 2, be fixed with upper handle 4, be used for guiding blast fan 1 and mention.On shell 2, be configured with two legs 6.Blast fan 1 is parked on two legs 6.Be starting CD-ROM drive motor 7, blast fan 1 has starting device 8.This starting device 8 has the handle of starting 9, constitutes unshowned rope on it, and when handle 9 was started in pulling, described rope was rolled onto on the flake down cylinder that is arranged in the shell 2 along direction of rotation, thereby starts the CD-ROM drive motor 7 that constitutes internal combustion engine.But this starting device 8 can also be the electricity operation.
Adjacent in the scope of blast pipe 3 of when operation directed forward, and in the scope of starting device 8, shell 2 has a row cold air openings 15.
Fig. 2 schematically shows the structure of blast fan 1.CD-ROM drive motor 7 has bent axle 10, and by the back and forth movement of piston 11, bent axle drives with being rotated.Starting device 8 acts on the bent axle 10.Between starting device 8 and CD-ROM drive motor 7, can on bent axle 10, resist rotationally fixedly blast wheel 18.This blast wheel 18 is used in particular for cooling air is transported to CD-ROM drive motor 7.Cooling air sucks in by the cold air openings 15 (Fig. 1) in starting device 8 scopes.
Blast fan 1 has air blast helical 13, and blast pipe 3 is fixed on the exit of air blast helical.Bent axle 10 drives 12 rotations of second blast wheel, and this blast wheel is used for by air blast helical 13 cooling air being transported to blast pipe 3.Second blast wheel 12 sucks in control air in the axial direction by SS 14.
Fig. 3 and 4 shows the shell 2 in starting device 8 scopes.In the scope of starting device 8, shell 2 is frustum-like shape camber arch outwardly.In the zone of vertebra shell face, be provided with cold air openings 15.This cold air openings 15 is separated mutually by the connection strap 20 of extension in a circumferential direction and by connection strap 21 radially.Described " around " and " radially " are for the rotation of bent axle 10.In the scope of starting device 8, shell 2 is provided with the plate 23 of smooth circle.On the circumference of circular slab 23, on shell 2, fixing protective element 16.This protective element 16 has buffer area 28, and it constitutes annular in this embodiment.This buffer area 28 constitutes a flange that stretches out outwardly on shell 2, therefore in the scope of starting device 8, mechanically protecting sheathing 2 is not subjected to ectocine.When shell 2 is run into flat object, when for example blast fan 1 drops on the floor, in the scope of starting device 8, have only buffer area 28 to contact with the floor.2 on shell is protected in this zone.
Fig. 5 shows the sectional view of the shell 2 in starting device 8 scopes.Schematically show the structure of the starting device 8 in the portion in the enclosure 27.Buffer area 28 is arranged on the shell lateral surface 26.Buffer area 28 is bearing on the plate 23 of shell 2 with its lip 22 inwardly.On buffer area 28, be fixed with 10 kayser pins 19 (also seeing Fig. 6 and Fig. 7) altogether.Each kayser pin 19 all has grab 25 outwardly, its undercutting around connection strap 20 on.Each connection strap 19 all puts in the cold air openings 15.Grab 25 touches from the lateral surface 26 of shell 2, so grab can inwardly press, and realizes unclamping.If the user wishes, can take off protective element 16 from shell 2.Protective element 16 in buffer area 28, have around shoulder 17, it is supported on the shell 2.Therefore protective element 16 is fixed on the shell 2 safely.
Shown in Fig. 6 and 7, protective element 16 has zone 24, does not arrange kayser pin 19 on this zone.Zone 24 is in the zone of starting handle 9.Other kayser pins 19 are evenly distributed on the circumference of buffer area 28.
Fig. 8 shows an embodiment of protective element 36.The buffer area 28 of protective element 36 comprises first material 37 that constitutes matrix.This first material 37 is special on the shell 2 that is adhesively fixed on blast fan 1.The matrix that is made of first material 37 is provided with second material 38, constitutes coating.Protective element can with the contacted scope of other planar object in, second material 38 surrounds first material 37.When shell 2 collisions of blast fan 1, at first contact is second material 38.First material 37 has different mechanical performances with second material 38, and for example second material 38 can be more flexible and softer than first material 37.By selecting suitable material and material shape, can be adjusted to the shock-absorbing capacity and the damping property of expectation.
Among the embodiment of protective element 46 shown in Figure 9, can reach protective element 46 desired elasticity and shock-absorbing capacity by the shape of selecting to be fit to.In order to improve the elasticity of protective element 46, protective element 46 has at least one cavity 47.Also a plurality of cavitys 47 can be set dispersedly on the circumference of protective element 46.These cavitys 47 can open wide or complete closed towards shell 2.Be fixed housing 2, protective element 46 is sprayed on the shell 2.Protective element 46 equally also is to be made of the material with elastic characteristic, for example rubber or thermoplastic elastomer body.
Described is fixed protection element and the flexible structural concept of regulating protective element, can at random mutually combine, and realizes the suitable performance of protective element.The opening that is used for ventilating also can be such opening, and promptly Chuan Shu air blows out by this opening, particularly when this work implements is meant suction fan or air draught/blast fan.
Claims (20)
1. manual working machine; has at least one blast wheel (12; 18) and be arranged on CD-ROM drive motor (7) in the shell (2) of work implements; wherein the shell of work implements (2) has at least one zone; in this zone, be provided with opening (14; 15); be used to make by blast wheel (12; 18) Shu Ru air passes; it is characterized in that; the lateral surface (26) of shell (2) is provided with protective element (16; 36; 46); this protective element has buffer area (28), and wherein buffer area (28) has opening (14; 15) protecting sheathing (2) is not damaged by mechanical impact load in the zone.
2. by the described work implements of claim 1, it is characterized in that blast wheel (18) is meant blast fan, its conveying is used for the cooling air of CD-ROM drive motor (7).
3. by claim 1 or 2 described work implements, it is characterized in that the control air of blast wheel (12) transportation work facility.
4. by the described work implements of claim 1, it is characterized in that shell (2) has connection strap (20,21) in the zone of opening (15), these connection straps are separated single opening (15) mutually.
5. by the described work implements of claim 1, it is characterized in that protective element (16,36,46) is arranged in the zone of stretching out of shell (2) outwardly.
6. by the described work implements of claim 1, it is characterized in that CD-ROM drive motor (7) is an internal combustion engine; And work implements has the starting device (8) that is used for internal combustion engine, and wherein protective element (16,36,46) is arranged in the scope of starting device (8) on the shell (2).
7. by the described work implements of claim 1, it is characterized in that buffer area (28) to the small part of protective element (16,36,46) is made by elastomeric material.
8. by the described work implements of claim 7, it is characterized in that elastomeric material is the thermoplastic elastomer body.
9. by the described work implements of claim 1, it is characterized in that protective element (36) comprises first material (37) and second material (38), wherein first material (37) has different mechanical performances with second material (38).
10. by the described work implements of claim 1, it is characterized in that the buffer area (28) of protective element (16,36) is configured to solid.
11., it is characterized in that the buffer area (28) of protective element (46) has at least one cavity (47) by the described work implements of claim 1.
12., it is characterized in that protective element (16) releasably is fixed on the shell (2) by the described work implements of claim 1.
13. by the described work implements of claim 1, it is characterized in that protective element (16) is fastened on the shell (2) by kayser, wherein protective element (16) has at least one kayser pin (19), its kayser is in one of opening (15) of shell (2).
14., it is characterized in that protective element (36) is fastened on the shell (2) by bonding by the described work implements of claim 1.
15., it is characterized in that protective element (46) is sprayed on the shell (2) by the described work implements of claim 1.
16., it is characterized in that elastomeric material is a rubber by the described work implements of claim 7.
17. be used for the protective element of manual working machine; wherein protective element (16) has buffer area (28); be used for protecting the shell (2) of work implements not damaged by mechanical load; protective element (16) also has at least one mechanism, is used for a protective element (16) to be fixed on the shell (2) of work implements.
18., it is characterized in that the described mechanism that is used for fixing is meant the mechanism that is used for releasably fixing by the described protective element of claim 17.
19. by the described protective element of claim 17, it is characterized in that described mechanism comprises at least one grab (25), wherein this grab (25) is arranged on the kayser pin (19), and wherein kayser pin (19) is fixed on the buffer area (28).
20., it is characterized in that buffer area (28) is configured to ring-type by one of claim 17 to 19 described protective element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007007182.7 | 2007-02-14 | ||
| DE102007007182A DE102007007182A1 (en) | 2007-02-14 | 2007-02-14 | Hand-held implement and protective element for a hand-held implement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101255681A CN101255681A (en) | 2008-09-03 |
| CN101255681B true CN101255681B (en) | 2011-08-03 |
Family
ID=39627961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810005668XA Expired - Fee Related CN101255681B (en) | 2007-02-14 | 2008-02-14 | Hand-held power tool and protective device for a hand-held power tool |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20080189903A1 (en) |
| CN (1) | CN101255681B (en) |
| DE (1) | DE102007007182A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007053256B3 (en) * | 2007-11-08 | 2009-07-09 | Continental Automotive Gmbh | Method and device for determining a coefficient of friction |
| CN102900043A (en) * | 2012-07-18 | 2013-01-30 | 重庆暄洁环保产业（集团）股份有限公司 | Pressure suction cleaning device for environmental sanitation works |
| CN104074155B (en) * | 2013-03-29 | 2016-09-07 | 南京德朔实业有限公司 | Hand blower |
| DE102013204054A1 (en) * | 2013-03-08 | 2014-09-11 | Behr Gmbh & Co. Kg | Radial fan with flow optimization |
| DE102013009891A1 (en) * | 2013-06-13 | 2014-12-18 | Andreas Stihl Ag & Co. Kg | Work tool with an internal combustion engine |
| EP2875718B1 (en) * | 2013-11-22 | 2019-06-05 | Andreas Stihl AG & Co. KG | Hand-held work device with a blowpipe |
| DE112014006616T5 (en) | 2014-04-24 | 2017-01-19 | Husqvarna Ab | Noise reduction system for a wind player |
| CN107969139B (en) * | 2015-04-09 | 2020-03-13 | 加拿大嘉纳泰尔有限公司 | Portable blade blower |
| JP6616709B2 (en) * | 2016-02-23 | 2019-12-04 | 株式会社やまびこ | Portable power work machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000303991A (en) * | 1999-04-22 | 2000-10-31 | Mitsubishi Electric Corp | Motor-driven blower |
| JP2001061728A (en) * | 1999-08-31 | 2001-03-13 | Hitachi Ltd | Vacuum cleaner |
| CN1344867A (en) * | 2001-11-06 | 2002-04-17 | 陶正钰 | Air blower |
| CN1821579A (en) * | 2005-02-17 | 2006-08-23 | 安德烈亚斯·斯蒂尔两合公司 | Hand-guided portable vacuum/blower device |
| EP1698228A1 (en) * | 2003-12-25 | 2006-09-06 | Fumakilla Limited | Fan chemical emitter, chemical cartridge used for same, and chemical impregnated body |
| CN1886559A (en) * | 2003-11-24 | 2006-12-27 | 电气联合股份有限公司 | Cooling system for a blower |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5628787U (en) * | 1979-08-10 | 1981-03-18 | ||
| US4879847A (en) * | 1989-03-13 | 1989-11-14 | Snap-On Tools Corporation | Cover for pneumatic tool |
| DE19959557B4 (en) | 1999-12-10 | 2015-12-03 | Andreas Stihl Ag & Co. | blower |
| US7922443B2 (en) * | 2007-02-02 | 2011-04-12 | Kawasaki Jukogyo Kabushiki Kaisha | Portable air blower |
-
2007
- 2007-02-14 DE DE102007007182A patent/DE102007007182A1/en not_active Withdrawn
-
2008
- 2008-02-05 US US12/025,863 patent/US20080189903A1/en not_active Abandoned
- 2008-02-14 CN CN200810005668XA patent/CN101255681B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000303991A (en) * | 1999-04-22 | 2000-10-31 | Mitsubishi Electric Corp | Motor-driven blower |
| JP2001061728A (en) * | 1999-08-31 | 2001-03-13 | Hitachi Ltd | Vacuum cleaner |
| CN1344867A (en) * | 2001-11-06 | 2002-04-17 | 陶正钰 | Air blower |
| CN1886559A (en) * | 2003-11-24 | 2006-12-27 | 电气联合股份有限公司 | Cooling system for a blower |
| EP1698228A1 (en) * | 2003-12-25 | 2006-09-06 | Fumakilla Limited | Fan chemical emitter, chemical cartridge used for same, and chemical impregnated body |
| CN1821579A (en) * | 2005-02-17 | 2006-08-23 | 安德烈亚斯·斯蒂尔两合公司 | Hand-guided portable vacuum/blower device |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-253449A 2002.09.10 |
| JP特开2004-162720A 2004.06.10 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101255681A (en) | 2008-09-03 |
| DE102007007182A1 (en) | 2008-08-21 |
| US20080189903A1 (en) | 2008-08-14 |
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