CN103507046A - Guard device - Google Patents
Guard device Download PDFInfo
- Publication number
- CN103507046A CN103507046A CN201310254607.8A CN201310254607A CN103507046A CN 103507046 A CN103507046 A CN 103507046A CN 201310254607 A CN201310254607 A CN 201310254607A CN 103507046 A CN103507046 A CN 103507046A
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- CN
- China
- Prior art keywords
- protective cover
- braking member
- cover device
- hand held
- power machine
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- 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.)
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a guard device. The guard device includes at least one basic element, at least one fastening element, and at least one guard anti-twist device. The at least one guard anti-twist device includes at least one braking element that, in at least one operating state of a portable power tool, is configured at least essentially at least to frictionally anti-twist lock the at least one basic element relative to the portable power tool. The at least one guard anti-twist device also includes at least one actuating unit configured to displace the at least one braking element. The at least one actuating unit includes at least one screwing element.
Description
Technical field
The present invention relates to a kind of protective cover device.
Background technology
According to the protective cover device of the preamble of claim 1, be known.
Summary of the invention
The present invention is set out by a kind of protective cover device, and described protective cover device has: at least one matrix; At least one retaining element; At least one protective cover anti-torsion device; described protective cover anti-torsion device comprises at least one braking member; described at least one braking member is at least substantially at least provided for described matrix phase for the sealed anti-torsion of the friction of a hand held power machine at least one running status of hand held power machine; and described protective cover anti-torsion device comprises at least one actuation unit, described at least one actuation unit is provided for the movement of described at least one braking member.
Propose as follows: described at least one actuation unit comprises at least one bolt element.Described matrix is preferably formed a protective cover, and described protective cover is provided for being fixed on a hand held power machine, especially on the grinding machine of Yi angle.Described retaining element is preferably provided for: described protective cover device at least part of position under mounted state is fixed on described hand held power machine regularly.Described retaining element is preferably formed by a clamping band (Spannband)." braking member " should be especially interpreted as a kind of element in context, and described element is provided for: especially under mounted state, brake force is applied on another corresponding element.Preferably, described brake force especially in a running status at least partly, preferably fully in the direction opposite following power, this power is applied on described protective cover device in a running status, on especially described matrix.Described brake force is preferably formed by frictional force at least in part.But also can consider: described brake force forms by shape is sealed at least in part.In addition can consider: described braking member is provided for meeting function and/or the task show for those skilled in the art meaningfully, for example protective cover device on hand held power machine, by it, be anti-lost and/or coding in the axial direction.
" running status " should especially be understood to, by operator, be interpreted as work in check and up to specification and/or the use state of described hand held power machine in context, and described protective cover device is coupled on described hand held power machine." bolt element " should especially be understood to such element in context, and described element has screw thread at least in part." screw thread " Ying Youqi in context is understood to a kind of structure, and described structure at least comprises the notch once moulding, described notch at least partly continuously coiled type ground around columniform wall portion, on helix, move towards.Described bolt element can comprise internal thread and/or external screw thread.Can realize thus the preferred firm, with low cost of described actuation unit and reliable design.
In addition propose: described at least one bolt element is provided at least partially in being applied in the radial direction on described at least one braking member.Can under on-position, realize thus the preferably high brake force of described braking member.
Also propose: described at least one bolt element is provided at least in part described at least one braking member of directly contact." directly contact " should be interpreted as by it in context: described at least one bolt element is provided under mounted state, contacting at least partly described at least one braking member, at least one power is delivered on described at least one braking member.Can realize thus described protective cover device advantageously reliably and the design of saving member.
In addition propose, described protective cover anti-torsion device comprises at least one receiving element, and described at least one receiving element is provided for corresponding with at least one bolt element.Can realize thus simple in the structure of described receiving element and advantageously with low cost and stable design.
Also propose: described at least one receiving element comprises internal thread at least in part." internal thread " Ying Youqi in context is understood to such screw thread, and this screw thread is arranged on the inner peripheral surface of described receiving element at least in part.Can realize thus the advantageously stable and design with low cost preferably of described receiving element.
In addition propose: described at least one receiving element is formed by a nut at least in part.Can realize thus simple in the structure of described receiving element and advantageously with low cost and stable design.
In addition propose: described at least one receiving element is fixedly connected with described retaining element at least in part.Can realize the design of the preferred compactness of described protective cover device thus.Under can also the state after the dismounting of described protective cover device, avoid safely the loss of described receiving element.
In addition propose: described protective cover anti-torsion device comprises at least one bearing unit, and described bearing unit is provided for described braking member at least under on-position, with respect to matrix, can move and support." bearing unit " Ying Youqi in context is understood to that such ，Gai unit, unit is provided for receiving the power of at least one supported element.Described bearing unit is preferably provided for the supporting that can move of at least one supported element.Described bearing unit can comprise a rolling supporting element and/or sliding bearing element." with respect to the relative motion of described matrix energy " Ying Youqi is understood in context: described braking member at least can be implemented such motion, and the in the situation that of this motion, described braking member changes with respect to the position of described matrix.By protective cover device according to design of the present invention can realize described protective cover device on a hand held power machine preferably safety anti-torsion.Can realize advantageously thus high operator's security.
Also propose: described bearing unit is provided at least one braking member to support in the mode that can tilt around at least one axis.The Ying Youqi in context that " can tilt " is understood to a definite angular range, to swing around at least one axis.In addition can consider: described bearing unit is provided for meeting at least one function and/or task of showing other, for those skilled in the art meaningfully.Can realize the preferably reliable and safe anti-torsion of described protective cover device and realize thus especially the advantageously high operator's security under on-position in simple mode in structure thus.
Accompanying drawing explanation
Other advantage is described and is obtained by accompanying drawing below.A plurality of embodiment of the present invention shown in the drawings.Accompanying drawing, description and claim comprise large measure feature with combination.Those skilled in the art also can individually consider aptly these features and be summarised as significant other combination.
Wherein:
Fig. 1 a there is shown the hand held power machine having according to protective cover device of the present invention in solid;
Fig. 1 b there is shown hand held power machine in schematic solid and is clamping the intercept in Jing region;
Fig. 1 c has illustrated the clamping neck of hand held power machine in schematic sectional view;
Fig. 2 a shows the intercept with protective cover anti-torsion device according to protective cover device of the present invention in the diagram;
Fig. 2 b there is shown the intercept with protective cover anti-torsion device according to protective cover device of the present invention in cross section;
Fig. 3 a there is shown the intercept with protective cover anti-torsion device of the protective cover device of replacement in schematic cross-section;
Fig. 3 b shows the intercept with protective cover anti-torsion device of the protective cover device of replacement under the state being assemblied on hand held power machine;
Fig. 4 a shows the intercept with protective cover anti-torsion device of the protective cover device of replacement in the diagram;
Fig. 4 b there is shown the protective cover device of the replacement under the state being assemblied on hand held power machine in solid;
Fig. 5 shows the intercept with protective cover anti-torsion device of the protective cover device of replacement in the diagram;
Fig. 6 shows the intercept with protective cover anti-torsion device of the protective cover device of replacement in the diagram;
Fig. 7 shows the intercept with protective cover anti-torsion device of the protective cover device of replacement in the diagram;
Fig. 8 shows the intercept with protective cover anti-torsion device of the protective cover device of replacement in the diagram;
Fig. 9 a there is shown hand held power machine in schematic solid and is clamping the intercept in Jing region; And
Fig. 9 b has illustrated the clamping neck of hand held power machine in schematic sectional view.
The specific embodiment
The hand held power machine that forms one jiao of grinding machine has been shown in Fig. 1 a.This hand held power machine has housing 56.Described housing 56 is cylinder shape constructs and for the handle 58 for operator.That housing 56 surrounds is unshowned, by electro-motor, form driver element.Housing 56 is formed by plastics.On an end of housing 56, described hand held power machine has cable 60, and described cable is provided for supplying with driver element with electric energy.On the end that deviates from driver element of housing 56, be furnished with the operating element 62 on housing 56.Described operating element 62 is formed and is provided for handling, namely connects and cut off described driver element by a slide switch.
On that end that deviates from driver element of housing 56, connect gear mechanism housing 64.Described gear mechanism housing 64 surrounds unshowned actuator unit.Described gear mechanism housing 64 is connected with housing 56 securely.Described gear mechanism housing 64 is tightened with housing 56.Gear mechanism housing 64 is formed by metal.Housing 56 and gear mechanism housing 64 connect in Yi region each other and in ，Gai region, are furnished with additional grip 66.This additional grip 66 is extended perpendicular to the driven axis 68 of driver element.
By gear mechanism housing 64, perpendicular to the driven axis 68 of driver element and stretch out a tool holding apparatus 70 perpendicular to additional grip 66 ground.Described tool holding apparatus 70 is provided for receiving a plug-in type instrument 72 and this plug-in type instrument is driven in a running status.Described tool holding apparatus 70 is connected with driven shaft 86.Driven shaft 86 is surrounded by a clamping neck 20 on circumferential 74.
In Fig. 1 b and 1c, show to details the clamping neck 20 of hand held power machine.The clamping neck 20 of described hand held power machine is provided for receiving protective cover device.Plug-in type instrument 72 is formed by grinding disc or chopping disk.Under mounted state, described protective cover device around extends at described tool holding apparatus 70.Clamping neck 20 is arranged between tool holding apparatus 70 and gear mechanism housing 64.Clamp neck 20 and comprise a brake area 22, in this brake area, be furnished with breaker slot 28.Described breaker slot 28 radially 18 is extended internally by the outer circumference surface of described clamping neck 20.In the brake area that clamps neck 20, under mounted state, be fixed with described protective cover device.Under the state assembling, the braking member 114 of protective cover anti-torsion device 112 is embedded in described breaker slot 28.Described breaker slot 28 comprises trench bottom 30 and two cell walls 32 that extend perpendicular to described trench bottom.
Protective cover device comprises the matrix 110 being formed by a protective cover, the retaining element 140 being formed by a clamping band and protective cover anti-torsion device 112(Fig. 2 a).Described protective cover device can be fixed on the clamping neck 20 of hand held power machine via retaining element 140 by stepless in the angle position that is wished by operator.Matrix 110, in a state being connected with tool holding apparatus 70, is roughly surrounding described plug-in type instrument 72 in the angular range of 180 °.Described matrix 110 is connected with retaining element 140 securely.Described matrix 110 materials are connected with retaining element 140 in locking manner.Described matrix 110 and retaining element 140 welding.Under mounted state, described retaining element 140 abuts on the clamping neck 20 of hand held power machine and surrounds described clamping neck.
In Fig. 2 a and 2b, be the first embodiment of protective cover anti-torsion device 112.For can be in a running status, especially in the situation that splitting of plug-in type instrument 72 stops matrix 110 with respect to undesirable torsion of tool holding apparatus 70 safely, described protective cover anti-torsion device 112 has a braking member 114.The braking member 114 of described protective cover anti-torsion device 112 is provided for matrix 110 with respect to the box-like anti-torsion of friction lock of described hand held power machine in a running status of hand held power machine.Braking member 114 is formed by a geosynclinal block.Braking member 114 is formed by metal.
In addition, protective cover anti-torsion device 112 comprises a bearing unit 116, and described bearing unit is provided for described braking member 114 with respect to matrix 110, in the mode that can move, to support in a running status of described hand held power machine.Described bearing unit 116 comprises breach 176, and described breach extends through retaining element 140 in radial direction 18.Described braking member 114 extends through the breach 176 in described retaining element 140 under mounted state.Described braking member 114 is supported with energy motion mode.Bearing unit 116 is provided for braking member 114 to support in the mode that can tilt around an axis.Described axis extends perpendicular to described radial direction 18.In addition, bearing unit 116 is provided for braking member 114 to support in the mode that can tilt around another axis.Described another axis is parallel to described radial direction 18 and extends.
Described braking member 114 has the cross section of tank shape.Radially 18 outlines that inwardly turn over of braking member 114 have a step-like region 178.Deviating from 178 side, described stairstepping region, the outline inwardly turning over of described braking member 114 has the turning once chamfering.Described braking member 114 is constructed to lateral open between described step-like region 178 and described turning.Described braking member 114 has play and is bearing in the breach 176 of retaining element 140 of protective cover device.Braking member 114 with can circumferential 75 and radial direction 18 within breach 176, move and the mode that tilts supported.Braking member 114 has sealed 180 of friction, and the sealed face of described friction is parallel to circumferential 74 and extends.Sealed 180 of described friction constructed with bend mode.Friction between the groove that sealed 180 of described friction is provided for being formed on braking member 114 and clamping neck 20 under mounted state is sealed.Alternatively may also be considered that, described braking member 114 be applied on the outer circumference surface that clamps neck 20 and forms under on-position with this outer circumference surface rub sealed.
At this, the mid point that described friction of constructing with bend mode is sealed 180 is with respect to the mid point skew that clamps neck 20.The mode that the mid point that described friction of constructing with bend mode is sealed 180 moves with the mid point with respect to described clamping neck 20 at least one direction, preferred both direction is arranged.If the midpoint that the described friction of constructing with bend mode of braking member 114 is sealed 180 is in X-Y coordinate system, wherein, described braking member 114 is on negative Y-axis line, and this mid point negative ground moves in directions X and Y-direction so.Pack position into relatively with supported, this forms special significance and when matrix 110 rotation suddenly of protective cover device, has and impact on rotating the very large impact postponing under on-position.In this external operating position of this moulding of sealed 180 of the described friction with bend mode structure of braking member 114, cause protective cover device clamping firm fixing on neck 20.Additionally, the diameter that the described friction of constructing with bend mode of braking member 114 is sealed 180 is less than the diameter that clamps neck 20, can stop thus matrix 110 with respect to the torsion of hand held power machine and under braking situation, to improve to rotate and impact delay.But also can consider, sealed 180 of the friction of braking member 114 is as shown in dotted line in Fig. 2 a, have than clamping significantly stronger bend of neck, can realize thus under mounted state, the seamed edge of braking member 114 is in the linearity contact clamping on neck, and can realize thus under on-position, the described seamed edge of braking member 114 is to favourable the burying underground in trench bottom 30.
Under the on-position producing during can the running status at hand held power machine by splitting of plug-in type instrument 72, because the fragment flying everywhere of plug-in type instrument 72 has very large power to be applied on the matrix 110 of protective cover device.This very large power can cause that matrix 110 is with respect to the torsion of hand held power machine.In order to stop or at least to reduce the described torsion with respect to hand held power machine at on-position lower substrate 110; described protective cover device has one from strengthening unit 134, and the described unit of certainly strengthening is provided for improving in the clamping neck 20 of described hand held power machine and the brake force between braking member 114 under on-position.Described on-position is caused by the torsion with respect to hand held power machine under the state being arranged on clamping neck 20 of protective cover device.Described from strengthening unit 134 around described braking member 114.The profile that the formation of braking member 114 rubs sealed 180 is provided for improving the clamping neck 20 of hand held power machine and the brake force between braking member 114 under on-position.In addition, braking member can around its obliquely the position of supported axis under on-position by described from strengthening the raising that unit 134 causes the brake force of braking member 114.Thus, bearing unit 116 and certainly strengthen partly single type structure of unit 134.
Protective cover anti-torsion device 112 comprises an actuation unit 142, and described actuation unit is being provided for the movement of described braking member 114 for protective cover device being fixed on to clamping process on hand held power machine.Described actuation unit 142 comprises a bolt element 144.Described bolt element 144 has external screw thread 182.Described bolt element 144 is formed by a bolt.Described bolt element 144 is provided for being applied on braking member 114 in radial direction 18.Described bolt element 144 is provided for directly contacting described braking member 114.Described bolt element 144 has bolt head 184, and this bolt head comprises a manipulation profile.Described bolt element 144 can be handled and rotate with a bolt bottle opener by operator.
Described actuation unit 142 comprises a receiving element 146 in addition, and described receiving element is provided for corresponding with bolt element 144.Receiving element 146 is formed by a bolt element equally.Described receiving element 146 comprises internal thread 148.Described receiving element is formed by a nut.The external screw thread 182 of described bolt element 144 and the internal thread 148 of described receiving element 146 are constructed relative to each other accordingly.Bolt element 144 and receiving element 146 are provided for tightening each other.Described receiving element 146 is connected with retaining element 140 securely.Described receiving element 146 materials are connected with retaining element 140 in locking manner.Described receiving element 146 and retaining element 140 welding.Described receiving element 146 is externally welded on retaining element 140 in radial direction 18.
Alternatively or additionally; bolt element 144 the mounted state lower support of described protective cover device one with sealed 180 opposed of frictions on; described can favour circumferential 74 structures, can advantageously be strengthened thus in the inclination that is screwed into the described braking member 114 in bolt element 144 situations.
But be also contemplated that, described bolt element 144 be provided for being directly screwed into retaining element unshowned, can the female breach of tool in, can advantageously cancel the receiving element as independent member thus.
In the situation that being screwed into described bolt element 144, first, the first seamed edge of braking member 114 contacts the trench bottom 30 of described breaker slot 28.In the situation that being further screwed into, radially 18 the power being applied on braking member 114 via bolt element 144 is enhanced, and braking member 144 tilts around an axis perpendicular to described radial direction 18 trends.Described axis is corresponding to described first seamed edge of braking member 114.Described braking member 114 continues to tilt, until another seamed edge of described braking member 114 abuts on the trench bottom 30 of the breaker slot 28 that clamps neck 20 equally.This characteristic of described inclination is especially in the situation that have special significance and can compare with the trigger action increasing with respect to the protective cover device matrix 110 unexpected rotation, interrupted of hand held power machine.Braking member 114 tends to abut in and clamps on neck 20 under on-position.Thus, under on-position, obtain the reinforcement certainly of the brake force that is configured to frictional force of braking member 114.Sealed by the friction between braking member 114 and clamping neck 20 in this generation, in a running status, stop matrix 110 with respect to the torsion unintentionally of hand held power machine.
In addition, described protective cover device comprises encoder element 138, and described encoder element is provided for the encoder element 36 corresponding (Fig. 1 b and 1c) with the clamping neck 20 of hand held power machine.The encoder element 36 of described clamping neck 20 is formed by the described breaker slot 28 being placed in described clamping neck 20.Encoder element 138 single type ground structures together with described braking member 114 of described protective cover device.Encoder element 36 single type ground structures together with described breaker slot 28 of described clamping neck 20.But the encoder element 136 that also can consider described clamping neck 20 construct dividually with breaker slot 28 and or encoder element 138 and the described braking member 114 of described protective cover device construct dividually.Protective cover device is designed for hand held power machine.
One other unshowned protective cover device is designed for an other unshowned hand held power machine.Hand held power machine is such as has already been described constructs of the same typely for described other hand held power machine.The same You Yi of described other hand held power machine angle grinding machine forms.Described other hand held power machine applies power seldom and constructs littlely than the hand held power machine of having described.Described other protective cover device in its function corresponding to the protective cover device of having described.Described other protective cover device has the encoder element being formed by a braking member equally.The encoder element of described other protective cover device is constructed greatlyr than the encoder element 138 of the protective cover device of having described.Described other hand held power machine has the clamping neck in a band brake region, is wherein furnished with breaker slot.The braking member of described other protective cover device is provided for embedding in described breaker slot under mounted state.The breaker slot of the clamping neck of described other hand held power machine is constructed greatlyr than the breaker slot 28 of the clamping neck 20 of the hand held power machine of having described.Described other protective cover device thus can not be with described hand held power machine by the formed encoder element of braking member corresponding and can not be embedded in described breaker slot 28 by the formed encoder element 36 of breaker slot 28.The encoder element of described other protective cover device stops with the encoder element 36 of described hand held power machine.Thus, the installation on the described hand held power machine that described other protective cover device is not designed at described other protective cover device can be prevented from.In contrast; described protective cover device can be installed on described other hand held power machine; this is because described protective cover device designs in the definite mode of over dimensioning; but, under running status or on-position, for the operator of described other hand held power machine, be safe from danger.
The description subsequently of a plurality of other embodiment and accompanying drawing are limited in the difference between these embodiment substantially, wherein, aspect the identical member illustrating, especially about the member with same reference numerals, also can consider in principle accompanying drawing and/or the description of other embodiment.In order to distinguish these embodiment, the important Reference numeral prefix number 1 to 9 of the embodiment that these are other.
At a protective cover device shown in Fig. 3 a and 3b.The protective cover device of described replacement is corresponding to the protective cover device of having described and be provided for the coupling with the clamping neck 320 with substitute mode structure of the hand held power machine of having described.Described clamping neck 320 has brake area 322 on outer circumference surface.In the brake area 322 of described clamping neck 320, be furnished with breaker slot 328 '.Described breaker slot 328 ' radially 18 is extended internally by the outer circumference surface of described clamping neck 320.Described breaker slot 328 ' is formed by a vertical slots, and the driven shaft 86 that described vertical slots is parallel to described hand held power machine extends.Described in sleeve protective cover device in the situation that, by the in axial direction guiding in breaker slot 328 ' of described braking member 114.Described breaker slot 328 ' forms encoder element 336, and described encoder element is provided for corresponding with the encoder element 138 being formed by described braking member 114.Additionally be provided with the breaker slot 328 not being shown specifically, the described breaker slot not being shown specifically extends and intersects (Fig. 1 b and 1c) with described breaker slot 328 ' along described clamping neck 320 on circumferential 74.
Intercept at a protective cover device of replacing shown in Fig. 4 a and 4b.The protective cover device major part of described replacement is corresponding to the protective cover device of having described and be provided for the coupling with the hand held power machine of having described.The protective cover device of described replacement comprises matrix 210, retaining element 240 and protective cover anti-torsion device 212.Described protective cover anti-torsion device 212 has braking member 214, and described braking member is provided for matrix 210 with respect to the box-like anti-torsion of friction lock of described hand held power machine in a running status of hand held power machine.Described protective cover anti-torsion device 212 has an actuation unit 242 in addition, and described actuation unit is provided for the movement of described braking member 214.Described actuation unit 242 comprises a bolt element 244.Described bolt element 244 is corresponding to the bolt element 144 of having described.Described actuation unit 242 comprises a receiving element 246 in addition, and described receiving element is provided for corresponding with bolt element 244.Receiving element 246 is formed by a bolt element equally.Described receiving element 246 is corresponding to the receiving element 146 of having described.
In addition, described actuation unit 242 has a reinforcing element 288, and described reinforcing element is provided for the reinforcement of the stabilisation of described actuation unit 242.Reinforcing element 288 is formed by the sheet material element of an arc.Described reinforcing element 288 securely and material be connected with retaining element 240 in locking manner.Described reinforcing element 288 is welded on retaining element 240.Described reinforcing element 288 extends through receiving element 246.Described bolt element 244 with bolt head 284 in mounted state bottom sub-support on described reinforcing element 288.Alternatively or additionally, described reinforcing element 288 can be provided for, under on-position for the stop part on the gear mechanism housing 64 at hand held power machine and therefore form the anti-torsion device other, that shape is sealed of described protective cover device.
Figure 5 illustrates the protective cover device of a replacement.The protective cover device major part of described replacement is corresponding to the protective cover device of having described and be provided for the coupling with the hand held power machine of having described.The protective cover device of described replacement comprises matrix 410, retaining element 440 and protective cover anti-torsion device 412.Described protective cover anti-torsion device 412 comprises a braking member 414.Described protective cover anti-torsion device 412 comprises an actuation unit 442, and described actuation unit is provided for described braking member 414 to move in radial direction 18.Described braking member 414 has dimetric basal plane.Described braking member 414 has basal plane pentagonal, Mirror Symmetry.Described basal plane is interrupted by a rectangle switch-in part 490, is placed in described basal plane described switch-in part Mirror Symmetry.Described switch-in part 490 is provided for being embedded on circumferential 74 in the breach 476 of formation bearing unit 416 of described retaining element 440 and described braking member 414 is tangentially guided with respect to described retaining element 440.The Mirror Symmetry axis of the basal plane of described braking member 414 is tangentially arranged with respect to described retaining element 440.
Described operating element 442 comprises bolt element 444, and described bolt element tangentially extends with respect to described retaining element 440.Described bolt element 444 has external screw thread 482.Described bolt element 444 is formed by a bolt.On described retaining element 440, be mounted with a reinforcing element 488.Described reinforcing element 488 is welded on retaining element 440.Described reinforcing element 488 is formed by metal sheet.On described reinforcing element 488, be furnished with a receiving element 446.Described receiving element 446 has internal thread 448.The internal thread 448 of described receiving element 446 is corresponding with the external screw thread 482 of described bolt element 444.Described receiving element 446 is formed by a nut.Described receiving element 446 is welded on described reinforcing element 488.Alternatively or additionally, described reinforcing element 488 can be provided for, under on-position for the stop part on the gear mechanism housing 64 at hand held power machine and therefore form the anti-torsion device other, that shape is sealed of described protective cover device.
If described bolt element 444 is screwed in described receiving element 446, tangentially the moving along the side 492 of the rising of described braking member 414 with respect to described retaining element 440 with the opposed end of bolt head 484 of so described bolt element 444.Thus, described braking member 414 tangentially moves up and moves inward in radial direction 18 in the identical side as bolt element 444 with respect to circumferential 74.The seamed edge of the radial direction outer of the side 492 of the rising of described braking member 214 this on the face of a falling type of described reinforcing element 488 along slip, thus, described braking member 414 is inwardly moved equally in radial direction 18.The interior seamed edge 492 that is in radial direction 18 of described braking member 414 presses to the described clamping neck 20 of the hand held power machine of having described and therefore forms the sealed anti-torsion device of friction at this.Described braking member 414 is supported in the mode that can tilt under on-position.
Figure 6 illustrates the intercept of the protective cover device of a replacement.The protective cover device major part of described replacement is corresponding to the protective cover device of having described and be provided for the coupling with the hand held power machine of having described.The protective cover device of described replacement comprises matrix 610, retaining element 640 and protective cover anti-torsion device 612.Described protective cover anti-torsion device 612 has braking member 614, and described braking member is provided for matrix 610 with respect to the box-like anti-torsion of friction lock of described hand held power machine in a running status of hand held power machine.Described protective cover anti-torsion device 612 has an actuation unit 642 in addition, and described actuation unit is provided for the movement of described braking member 614.
Described actuation unit 642 comprises a lever element 650.Described protective cover anti-torsion device 612 comprises a bearing unit 654, and described bearing unit is provided for described lever element 650 to support in the mode that can swing.Described bearing unit 654 is provided in addition: braking member 614 is supported in the mode that can move with respect to described matrix 640 under on-position.Described braking member 614 comprises eccentric 652.Described lever element 650 is provided for being applied on braking member 614 in radial direction 18.Described lever element 650 is provided for directly contacting described braking member 614.Described lever element 650 and described braking member 614 are connected to each other securely.Described lever element 650 and described braking member 614 materials are connected to each other in locking manner.Described lever element 650 and described braking member 614 single type ground structures.
Described bearing unit 654 comprises a supporting shaft, and described supporting shaft forms the axis of oscillation of described lever element 650 and described braking member 614.Described supporting shaft is connected with lever element 650 in anti-relative rotation.Described supporting shaft is kept by supporting member 694 and is supported in the mode that can rotate with respect to the retaining element 640 of described protective cover device.Described supporting member 694 is formed by a sheet material element, and described sheet material element is connected with described retaining element 640 securely and forms a buttonhole.Described supporting member 694 and retaining element 640 welding.Described supporting shaft is embedded in the formed buttonhole of described supporting member 694.
Figure 7 illustrates the intercept of the protective cover device of a replacement.The protective cover device major part of described replacement is corresponding to the protective cover device of having described and be provided for the coupling with the hand held power machine of having described.The protective cover device of described replacement comprises matrix 710, retaining element 740 and protective cover anti-torsion device 712.Described protective cover anti-torsion device 712 has braking member 714, and described braking member is provided for matrix 710 with respect to the box-like anti-torsion of friction lock of described hand held power machine in a running status of hand held power machine.Described protective cover anti-torsion device 712 has an actuation unit 742 in addition, and described actuation unit is provided for the movement of described braking member 714.
Described actuation unit 742 comprises a lever element 750.Described protective cover anti-torsion device 712 comprises a bearing unit 754, and described bearing unit is provided for supporting described lever element 750.Described bearing unit 754 comprises a supporting shaft, and described supporting shaft extends perpendicular to described radial direction 18.Described supporting shaft is connected with lever element 750 in anti-relative rotation.Described supporting shaft is kept by supporting member 794 and is supported in the mode that can rotate with respect to the retaining element 740 of described protective cover device.Described supporting member 794 is formed by a sheet material element, and described sheet material element is connected with described retaining element 740 securely and forms tool contact pin jaggy.Described supporting member 794 and retaining element 740 welding.Described supporting shaft is embedded in the described breach of the formed supporting member 794 of described contact pin.
Protective cover anti-torsion device 712 comprises another bearing unit 716, and described another bearing unit is provided for described braking member 714 with respect to matrix 710, can move and support under on-position.Described bearing unit 716 comprises another supporting shaft 755, and described another supporting shaft extends and tangentially extends with respect to described retaining element 740 perpendicular to described radial direction 18.Described another supporting shaft 755 is connected with described lever element 750 and is supported with energy motion mode.One unshowned bolt element be bolted with bearing unit 716 with braking member 714 can motion mode to be connected.Described supporting shaft 755 is connected and passes through breach 796 extensions of described braking member 714 with braking member 714 in the mode that can rotate.Described bearing unit 716 is provided for braking member 714 to support in the mode that can tilt around an axis, and described axis tangentially extends perpendicular to radial direction 18 and with respect to retaining element 740.
Figure 8 illustrates the intercept of the protective cover device of a replacement.The protective cover device major part of described replacement is corresponding to the protective cover device of having described and be provided for the coupling with the hand held power machine of having described.The protective cover device of described replacement comprises matrix 810, retaining element 840 and protective cover anti-torsion device 812.Described protective cover anti-torsion device 812 has braking member 814, and described braking member is provided for matrix 810 with respect to the box-like anti-torsion of friction lock of described hand held power machine in a running status of hand held power machine.Described protective cover anti-torsion device 812 has an actuation unit 842 in addition, and described actuation unit is provided for the movement of described braking member 814.
Described actuation unit 842 comprises a lever element 850.Described protective cover anti-torsion device 812 comprises an eccentric 852, and described eccentric is connected with lever element 850 in anti-relative rotation.Described lever element 850 is supported in the mode that can swing with respect to described retaining element 840 via bearing unit 854.This is outside equipped with a braking member 814, and described braking member major part is corresponding to the braking member 114 of having described.Described braking member 814 is service plate shape and constructs.The described braking member 814 of described eccentric 852 contact.By swinging that described lever element 850 moves inward via described eccentric 852 described braking member 814 in radial direction 18 and by described clamping neck 20.Produce thus the brake force being formed by frictional force.
In Fig. 9 a and 9b, show in detail the intercept of clamping neck 920 of the replacement of the hand held power machine of having described.The clamping neck 920 of described replacement is mostly corresponding to the clamping neck 20 of having described.Described clamping neck 920 has brake area 922 on outer circumference surface.In the brake area 922 of described clamping neck 920, be furnished with breaker slot 928.Described breaker slot 928 radially 18 is extended internally by the outer circumference surface of described clamping neck 920.The brake area 922 of described clamping neck 920 has an inclined element.The brake area 922 of described clamping neck 920 have a plurality of on circumferential 74 equally distributed inclined element 924,926.
The brake area 922 of described clamping neck 920 has different inclined element 924,926.Described inclined element 924,926 is provided for, corresponding with the braking member that described, that do not illustrate here of protective cover device under mounted state under on-position.The first inclined element 924 is arranged in the trench bottom 930 from described breaker slot 928 on the trench bottom 930 of described breaker slot 928 and in radial direction 18 and stretches out.Other inclined element 926 is arranged on the cell wall 932 of described breaker slot 928 and extends from the cell wall 930 of described breaker slot 928 to described breaker slot 928 perpendicular to described radial direction 18.Alternatively or additionally may also be considered that, that described trench bottom 930 and/or cell wall 932 have is unshowned, under on-position described braking member tilt to depressed part wherein and/or have as inclined element be shown in dotted line answer fracture location (Fig. 9 b), described braking member is answered in fracture location described in invading under on-position, tilts thus and can strengthen thus that the friction of described braking member in described breaker slot 928 is sealed to be buried underground in other words.
Under the braking situation of reversing with respect to hand held power machine at protective cover device; on described braking member at least one inclined element in the inclined element 924,926 of described breaker slot 928, nuzzle up and cause the inclination of described braking member; thus; described braking member is buried underground in breaker slot; and be enhanced to the following degree of frictional force, so that protective cover device is braked or stops with respect to the torsion of hand held power machine.May be considered that, an inclined element 924,926 is only set in breaker slot 928 or inclined element of the same type 924,926 is only set or a plurality of different inclined elements 924,926 are set.
Claims (10)
1. protective cover device, described protective cover device has: at least one matrix (110,210,410,510), at least one retaining element (140,240,440,540), at least one protective cover anti-torsion device (112, 212, 412, 512), described protective cover anti-torsion device comprises at least one braking member (114, 214, 414, 514), described at least one braking member is at least substantially at least provided for described matrix (110 at least one running status of hand held power machine, 210, 410, 510) anti-torsion sealed with respect to the friction of hand held power machine, and described protective cover anti-torsion device comprises at least one actuation unit (142, 242, 442, 542), described at least one actuation unit is provided for described at least one braking member (114, 214, 414, 514) movement, it is characterized in that, described at least one actuation unit (142, 242, 442, 542) comprise at least one bolt element (144, 244, 444, 544).
2. protective cover device according to claim 1; it is characterized in that, described at least one bolt element (144,244,444,544) is provided in radial direction (18), being applied at least in part on described at least one braking member (114,214,414,514).
3. according to protective cover device in any one of the preceding claims wherein; it is characterized in that, described at least one bolt element (144,244,444,544) is provided at least in part described at least one braking member (114,214,414,514) of directly contact.
4. according to protective cover device in any one of the preceding claims wherein; it is characterized in that; described protective cover anti-torsion device (112,212,412,512) comprises at least one receiving element (146,246,446,546), and described at least one receiving element is provided for corresponding with described at least one bolt element (144,244,444,544).
5. protective cover device according to claim 4, is characterized in that, described at least one receiving element (146,246,446,546) comprises internal thread (148,248,448,548) at least in part.
6. protective cover device at least according to claim 4, is characterized in that, described at least one receiving element (146,246,446,546) is formed by a nut at least in part.
7. protective cover device at least according to claim 4, is characterized in that, described at least one receiving element (146,246,446,546) is fixedly connected with described retaining element (140,240,440,540) at least partly.
8. according to protective cover device in any one of the preceding claims wherein; it is characterized in that; described protective cover anti-torsion device (112,212,412,512) comprises at least one bearing unit (116,216,416,516), and described at least one bearing unit is provided for described braking member (114,214,414,514) at least under on-position, in the mode that can move with respect to described matrix (110,210,410,510), to support.
9. protective cover device according to claim 8; it is characterized in that, described bearing unit (116,216,416,516) is provided for described at least one braking member (114,214,414,514) to support in the mode that can tilt around at least one axis.
10. there is at least one hand held power machine and there is at least one according to the system of protective cover device in any one of the preceding claims wherein.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012210762.2 | 2012-06-25 | ||
| DE201210210762 DE102012210762A1 (en) | 2012-06-25 | 2012-06-25 | Guard device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103507046A true CN103507046A (en) | 2014-01-15 |
Family
ID=49727459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310254607.8A Pending CN103507046A (en) | 2012-06-25 | 2013-06-25 | Guard device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130344781A1 (en) |
| CN (1) | CN103507046A (en) |
| DE (1) | DE102012210762A1 (en) |
| FR (1) | FR2992399A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012214834A1 (en) * | 2012-08-21 | 2014-02-27 | Robert Bosch Gmbh | Guard device |
| US11358267B2 (en) * | 2019-09-11 | 2022-06-14 | Textron Innovations Inc. | Tool guard |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080200103A1 (en) * | 2006-05-12 | 2008-08-21 | Florian Esenwein | Guard For A Hand-Held Power Tool And Hand-Held Power Tool With A Guard |
| CN201161351Y (en) * | 2008-01-08 | 2008-12-10 | 王长江 | Protecting device of composite saw |
| DE102008002451A1 (en) * | 2008-06-16 | 2009-12-17 | Robert Bosch Gmbh | Machine tool, in particular hand tool |
| CN101767225A (en) * | 2010-03-16 | 2010-07-07 | 江苏金飞达电动工具有限公司 | Guard hood for combined saw |
| US20120052778A1 (en) * | 2009-04-11 | 2012-03-01 | Matthias Hiller | Protective hood for portable electric power tools, and portable electric power tools |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US696155A (en) * | 1901-06-25 | 1902-03-25 | Isaac N Williams | Guard attachment for dental engines. |
| US2232733A (en) * | 1938-02-23 | 1941-02-25 | William E Scarboro | Surgical cast remover |
| US3969856A (en) * | 1973-09-25 | 1976-07-20 | Andreas Stihl Maschinenfabrik | Adjustable protective hood for a rotary tool |
| JPS6070833U (en) * | 1983-10-24 | 1985-05-18 | 株式会社ニコン | Lens hood attachment device |
| DE3921772A1 (en) * | 1989-07-01 | 1991-01-03 | Hilti Ag | HAND DEVICE WITH CUTTING OR GRINDING DISC |
| SE507264C2 (en) * | 1996-06-13 | 1998-05-04 | Atlas Copco Tools Ab | Handheld power tool |
| US6389701B1 (en) * | 1999-12-17 | 2002-05-21 | Gyros Precision Tools, Inc. | Hand tool safety shroud |
| US6561887B2 (en) * | 2000-02-17 | 2003-05-13 | Bao Shyan Lai | Protective cover detachably installed on a cutting machine/engraving machine combination |
| US6893334B1 (en) * | 2002-01-24 | 2005-05-17 | J. David Stivers | Rotating guard for angle grinder |
| US6688955B2 (en) * | 2002-05-20 | 2004-02-10 | Motomax Electric Co., Ltd. | Grinding wheel fender adjusting device and grinding member securing device |
| DE10259520A1 (en) * | 2002-12-19 | 2004-07-01 | Robert Bosch Gmbh | Electric hand tool |
| SE525836C2 (en) * | 2003-03-31 | 2005-05-10 | Atlas Copco Tools Ab | Grinding machine with explosion protection and spindle lock |
| DE102007041840A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Hand tool with protective hood, in particular angle grinder |
| DE102007052684A1 (en) * | 2007-11-05 | 2009-05-07 | Robert Bosch Gmbh | Hand tool |
| DE102008002468A1 (en) * | 2008-06-17 | 2009-12-24 | Robert Bosch Gmbh | Machine tool, in particular hand tool |
-
2012
- 2012-06-25 DE DE201210210762 patent/DE102012210762A1/en not_active Withdrawn
-
2013
- 2013-06-24 US US13/925,293 patent/US20130344781A1/en not_active Abandoned
- 2013-06-24 FR FR1355975A patent/FR2992399A1/en not_active Withdrawn
- 2013-06-25 CN CN201310254607.8A patent/CN103507046A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080200103A1 (en) * | 2006-05-12 | 2008-08-21 | Florian Esenwein | Guard For A Hand-Held Power Tool And Hand-Held Power Tool With A Guard |
| CN101443158A (en) * | 2006-05-12 | 2009-05-27 | 罗伯特·博世有限公司 | Guard for a hand-held power tool and hand-held power tool with a guard |
| CN201161351Y (en) * | 2008-01-08 | 2008-12-10 | 王长江 | Protecting device of composite saw |
| DE102008002451A1 (en) * | 2008-06-16 | 2009-12-17 | Robert Bosch Gmbh | Machine tool, in particular hand tool |
| US20120052778A1 (en) * | 2009-04-11 | 2012-03-01 | Matthias Hiller | Protective hood for portable electric power tools, and portable electric power tools |
| CN101767225A (en) * | 2010-03-16 | 2010-07-07 | 江苏金飞达电动工具有限公司 | Guard hood for combined saw |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2992399A1 (en) | 2013-12-27 |
| US20130344781A1 (en) | 2013-12-26 |
| DE102012210762A1 (en) | 2014-01-02 |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |
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| WD01 | Invention patent application deemed withdrawn after publication |