CN101623850A - Protective guard rotation-locking device - Google Patents
Protective guard rotation-locking device Download PDFInfo
- Publication number
- CN101623850A CN101623850A CN200910140022A CN200910140022A CN101623850A CN 101623850 A CN101623850 A CN 101623850A CN 200910140022 A CN200910140022 A CN 200910140022A CN 200910140022 A CN200910140022 A CN 200910140022A CN 101623850 A CN101623850 A CN 101623850A
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- China
- Prior art keywords
- protective cover
- rotation lock
- shape
- circumferencial direction
- flux
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- 230000001681 protective effect Effects 0.000 title claims description 148
- 230000004907 flux Effects 0.000 claims abstract description 60
- 238000000465 moulding Methods 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005476 soldering Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Images
Classifications
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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
- 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
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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
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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)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a protection hood anti-twist device which is used for a hand machine tool (12a), especially an angle grinding machine (14a), and the protection hood anti-twist device is equipped for preventing torsion between the hand machine tool (12a) and the protection hood (16a; 16d; 16e) especially in the situation that a knife (18a) is broken, and the protection hood anti-twist device has a clamp belt (20a; 20d; 20e), and the clamp belt includes an anti-twist zone (22a; 22d; 22e) with a form closure profile (24a; 24d; 24e). The invention also provides an energy flux component (26a; 26b; 26c; 26d; 26e), and the energy flux component is equipped for reducing energy flux density of the pure form closure profile in at least one part of the anti-twist zone (22a; 22d; 22e).
Description
Technical field
The present invention relates to a kind ofly to be used for hand held power machine, especially for the protective cover anti-rotation lock of angle grinding machine; this protective cover anti-rotation lock is set for and prevents reversing between this hand held power machine and the protective cover; particularly preventing reversing between this hand held power machine and the protective cover under the situation of a tool damage; this protective cover anti-rotation lock has one and clamps band, and this clamping band comprises that one has the anti-zone of reversing of the sealed profile of a shape.
Background technology
The protective cover anti-rotation lock that is used for hand held power machine is disclosed; this protective cover anti-rotation lock is set for and prevents reversing between hand held power machine and the protective cover unit, is particularly preventing reversing between hand held power machine and the protective cover unit under the situation of tool damage.This known protective cover anti-rotation lock comprises that one clamps band, and this clamping band comprises an anti-zone of reversing that has the sealed profile of a pure shape.
Summary of the invention
The present invention relates to a kind ofly to be used for hand held power machine, especially for the protective cover anti-rotation lock of angle grinding machine; this protective cover anti-rotation lock is set for and prevents reversing between this hand held power machine and the protective cover; particularly preventing reversing between this hand held power machine and the protective cover under the situation of a tool damage; this protective cover anti-rotation lock has one and clamps band, and this clamping band comprises that one has the anti-zone of reversing of the sealed profile of a shape.
The present invention proposes, and the protective cover anti-rotation lock comprises a flux of energy element, and this flux of energy element is set for respect to the density that reduces flux of energy at the anti-sealed profile of pure shape that reverses in regional at least a portion.In this context, be interpreted as special equipment and/or specialized designs for " setting ".This for " anti-reverse " be interpreted as this especially prevent a protective cover unit with respect to hand held power machine run duration do not expect reverse, particularly under the situation of tool damage, prevent a protective cover unit with respect to hand held power machine run duration do not expect reverse.At this, preferred protective cover unit is with respect to 90 ° of hand held power machine maximum twist.In addition, particularly be interpreted as being cleaved into a plurality of parts suddenly at the cutter in service of hand held power machine for " situation of tool damage ", wherein, each cutter part can outwards throw away at this owing to the rotation of cutter.
At this, " clamp band " for term and particularly be interpreted as a kind of like this member and/or element, this member and/or element are set for the protective cover unit are fixed on the receiving element of hand held power machine.For this reason, preferred this clamping band is permanently connected with the protective cover neck of protective cover unit, thereby this clamping band is connected with this protective cover unit is anti-with reversing.Preferred this clamping band is connected on the protective cover neck of protective cover unit by melting welding, yet those skilled in the art think that significant other connected modes also are fine, and for example soldering connects.Advantageously, this clamping band is made by steel plate, can think that significant other materials makes by those skilled in the art yet should clamping be with also.At this; term " the anti-zone of reversing " should be defined as the such zone that clamps band; this zone is set for by special moulding and prevents reversing between protective cover unit and the hand held power machine, particularly by means of force closure, shape is sealed and/or material is sealed prevents described reversing.Advantageously, this anti-circumferencial direction being with along this clamping in the zone that reverses extends on a subregion of this clamping band.At this, particularly be interpreted as the cross section of a member and/or element for " the sealed profile of shape ", this cross section is set for that to produce shape sealed with an other member and/or element.Advantageously, the sealed profile of this shape is arranged in anti-the reversing in the zone that clamps band in configuration of the present invention.At this, particularly be interpreted as the sealed profile of a kind of like this shape for " the sealed profile of pure shape ", the sealed profile of this shape along the circumferential direction has the unified structure that remains unchanged, preferred wavy profile, the clamping band of pure wave shape particularly for example, and have a cross section in the radial direction, that have a cross-sectional area, this cross-sectional area has a development length that remains unchanged in the radial direction what clamp band on the whole height that clamps band.
At this, term " flux of energy (Kraftfluss) " defined power in the member and/or moment from an application point (position that power is introduced) to a position path of (sustained by a reaction force and/or a moment of reaction) in the above power of this position and/or moment.At this, for " density of flux of energy " be interpreted as this flux of energy particularly with respect to the closeness of an area and/or a volume (
).
Configuration of the present invention by the protective cover anti-rotation lock can be more effective and be particularly protected the operating personnel of hand held power machine to avoid under the cutter of hand held power machine rotation in service and/or the particularly situation in tool damage more reliably, for example is cleaved into suddenly at cutter and avoids under the manifold situation towards the sudden cutter part of operating personnel's direction.At this; the size of protective cover anti-rotation lock is designed like this; make the power that occurs under the situation of tool damage to be received by this protective cover anti-rotation lock, described power is being delivered on this protective cover unit under the situation that keeps defencive function for operating personnel by the cutter part of running on the protective cover unit of the cutter that breaks.
Propose in addition, this flux of energy element is set for basically and stops this anti-distortion of reversing the zone.For this reason; in the configuration of the present invention of protective cover anti-rotation lock; the flux of energy element preferably be constructed to another member and/or element, particularly clamp the anti-rib in zone and/or the member and/or the element that this flux of energy element is constructed to the bridge shape of reversing of band; wherein, flux of energy guides by this member and/or this element at least in part at this.Preferred this flux of energy element is made by steel plate, but also can use those skilled in the art to think significant other materials.This flux of energy element is with clamping at least in part and is fixedlyed connected, and for example particularly connect by the melting welding at least two points of this flux of energy element, yet those skilled in the art thinks that significant other connected modes also are fine.Advantageously, reduce or prevented the member that bears load of hand held power machine, for example particularly clamp distortion and the associated wearing and tearing or the associated possible inefficacy of band.
If described flux of energy element advantageously reverses in the zone anti-along a circumferential directions of described clamping band, can realize that then the power of compact protective cover anti-rotation lock and appearance can advantageously receive by this protective cover anti-rotation lock.In this context; particularly be interpreted as such direction for " circumferencial direction ", this direction sees around its extension and/or this direction that along a longitudinal direction of the protective cover neck of protective cover unit the rotation around cutter in a confined state of protective cover unit extends.
In addition, the flux of energy element has some protuberances of one after the other arranging along the circumferencial direction front and back that clamp band at least in part, and the shape that these protuberances are set between this clamping band and this flux of energy element is sealed.At this, particularly be interpreted as at the undulatory and/or jagged protuberance in the radial direction that clamps band and/or flux of energy element for " protuberance that front and back are one after the other arranged ", described protuberance is alternately arranged in a subregion of this flux of energy element at least along clamping circumferencial direction band and/or the flux of energy element.These protuberances of preferred this flux of energy element form a conjugate profile that cooperates with the anti-sealed profile of shape that reverses the zone that clamps band, so that advantageously realize flux of energy element and reliable connection that clamps between the band.Thus, particularly clamping the power that occurs in the band could particularly advantageously receive and/or derive and can prevent this protective cover anti-rotation lock by this flux of energy element inefficacy under the situation of tool damage.
Advantageously, described flux of energy arrangements of elements is on a side that deviates from a receiving element of described clamping band.Preferred this receiving element comprises that one receives neck and a substrate, and the protective cover unit can be fixed on this reception neck, and this substrate is set for this receiving element is fixed on the hand held power machine.Can be assemblied in this receiving element simply maybe on this receptions neck, with clamping band by this configuration of the present invention because the flux of energy arrangements of elements is outside the assembly area that clamping is with.
In addition, the flux of energy element constitutes integratedly with the clamping band at least in part.Particularly be interpreted as single type for " one " and/or constitute and/or be constructed to a member at this by a foundry goods.But the simple protective cover anti-rotation lock of implementation structure thus.In addition, can advantageously save thus independent member, structure space, assembling expends and cost.
Preferred this protective cover anti-rotation lock comprises a protective cover unit, and this protective cover unit anti-ly on the side that the zone is located substantially on the opposite is being arranged in this clamping with reversing and is with described anti-reversing along a circumferencial direction of described clamping band.In this context; particularly be interpreted as a side for " being located substantially on a side on opposite " along described circumferencial direction; wherein; one first area, particularly anti-at least one point that reverses the zone be arranged in the side that clamps band and can with a second area, particularly at least one point of protective cover unit is connected by straight line; mid point and/or zone line that this straight line passes the face of a clamped band encirclement extend; wherein, this zone line maximum comprises 20% of face that described clamped band surrounds.Thus, can realize clamping the favourable utilization of the whole circumference basically of band.
Propose in addition, described anti-reverse zone and/or described flux of energy element along the circumferential directions of described clamping band between a locking unit and described protective cover unit that this clampings is with.At this, for term " between " particularly be interpreted as spatially layout along circumferencial direction.In addition, particularly be interpreted as such unit for " locking unit ", this unit is set for the protective cover unit is fixed on the receiving element, particularly by the clamping that clamps band the protective cover unit is fixed on the receiving element.Thus, can realize different functional units clamping with on layout simple in structure.
In another configuration of the present invention, propose, the sealed profile of described shape has at least one shape latch members along a circumferencial direction of described clamping band, this shape latch members has sidewalls different in its moulding in a circumferential direction and on a circumferencial direction opposite with this circumferencial direction, and these sidewalls are set for the different sealed connection of shape of realization on these circumferencial directions.In this context, particularly be interpreted as along the clockwise direction of the circumferencial direction that clamps band for " clamping a circumferencial direction of band ".In addition, be interpreted as along the counter clockwise direction of the circumferencial direction that clamps band for " opposite circumferencial direction ".At this, term " different sidewalls " is meant especially: at least two sidewalls of shape latch members along circumferencial direction its in shape, particularly at the gradient (Steigung) of sidewall and/or vpg connection along described two circumferencial direction differences, for example the curvature difference of these sidewalls.Yet may also be considered that, with these sidewall design for symmetry or be designed to those skilled in the art and think significant other shapes.At this, particularly be interpreted as the sealed connection of such shape for " the sealed connection of different shapes ": the sealed connection of these shapes and loading direction can and/or bear the power of different sizes along these circumferencial direction transmission relatively.Can advantageously realize the comfortable displacement of protective cover unit in one direction and can realize anti-reliably reversing in the opposite direction by the configuration of the present invention of protective cover anti-rotation lock.Protective cover anti-rotation lock to operating personnel close friend can be provided thus.
Preferred described at least one shape latch members is configured to zigzag.In this context, be interpreted as the cross section of such shape and/or a member and/or an element for " zigzag ", this shape and/or this cross section have gradient difference and/or the different sidewall of curvature, thereby produce the directional dependency of transferable power.Can be by the sealed profile of zigzag shape that a plurality of shape latch members constitute additionally by a corrugated profile stack.At this, the sealed profile of this shape can be made especially inexpensively and in addition can the simple protective cover anti-rotation lock of implementation structure.
Propose in addition, this protective cover anti-rotation lock comprises a receiving element, and this receiving element is set for to receive at least in part and clamps band and/or protective cover unit.At this, when particularly power on acting on the protective cover unit and/or moment are high, for example when the stable especially support that when hand held power machine cutter in service breaks, can realize the protective cover unit simple in structurely.
Advantageously, described receiving element has some shape latch members along a whole basically circumferencial direction, these shape latch members have sidewalls different in its moulding on this circumferencial direction and on a circumferencial direction opposite with this circumferencial direction, and these sidewalls are set for the different sealed connection of shape of realization on these circumferencial directions.Yet may also be considered that, with these sidewall design for symmetry or be designed to those skilled in the art and think significant other shapes.Can realize advantageously that by the configuration of the present invention of protective cover anti-rotation lock the protective cover unit is in comfortable and many-sided displacement and the advantageously distribution of realizable force on a plurality of shape latch members in addition on the receiving element.
Propose in addition, these shape latch members are configured to zigzag, so that realize the directional dependency of transferable power on receiving element.Can realize variable protective cover anti-rotation lock thus, because jagged shape latch members can adapt to the use zone of hand held power machine.
The invention still further relates to a kind of hand held power machine, particularly angle grinding machine, it has a protective cover anti-rotation lock as described in the present invention.
Description of drawings
Other advantage of the present invention can obtain from following description of drawings.Embodiments of the invention shown in the drawings.Accompanying drawing, explanation and other application documents comprise a large amount of assemblage characteristics.Those skilled in the art can meet the destination and these features be investigated and are combined into significant other combination individually.
In the accompanying drawing:
Fig. 1: illustrating out angle grinding machine with protective cover anti-rotation lock of the present invention,
Fig. 2: with schematic diagram protective cover anti-rotation lock of the present invention is shown,
Fig. 3: with schematic diagram the receiving element of protective cover anti-rotation lock of the present invention is shown,
Fig. 4: with schematic diagram the protective cover unit that clamps band that has of protective cover anti-rotation lock of the present invention is shown,
Fig. 5: the detail view of the sealed profile of shape of the clamping band among Fig. 4 is shown,
Fig. 6: the cross section of the line V-V in Fig. 5 that clamps band is shown,
Fig. 7 a: the u shape profile shape cross section of the line V-V in Fig. 5 of an alternative clamping band is shown,
Fig. 7 b: the cross section of the line V-V in Fig. 5 is shown, and it has the groove of an alternative clamping band,
Fig. 8: a protective cover unit of protective cover anti-rotation lock of the present invention is shown, and this protective cover unit has an alternative clamping band, this clamping band have a flux of energy element that adapts to the outline that this clampings is with and
Fig. 9: a protective cover unit of protective cover anti-rotation lock of the present invention is shown, and this protective cover unit has an alternative clamping band, and this clamping band has a flux of energy element that constitutes integratedly.
The specific embodiment
In Fig. 1, a hand held power machine 12a who is made of angle grinding machine 14a, protective cover unit 16a and a protective cover anti-rotation lock 10a (not being shown specifically at this) are shown with vertical view.This angle grinding machine 14a comprises a machine hand tool housing 50a and a main handle 52a who is integrated among this machine hand tool housing 50a, and this main handle is extending on the longitudinal direction 56a of this angle grinding machine 14a on the side 54a of a cutter 18a who deviates to be made of chopping disk.This machine hand tool housing 50a comprises a motor shell 58a and a gear mechanism housing 60a.In addition, this angle grinding machine 14a has a receiving element 36a (not being shown specifically at this), is used to receive protective cover unit 16a and/or cutter 18a, and this receiving element is connected with gear mechanism housing 60a by means of four screw jockeys.Protective cover unit 16a covers roughly 180 ° the angular range of cutter 18a in a confined state.The auxiliary handle 62a of angle grinding machine 14a is arranged on the gear mechanism housing 60a.This auxiliary handle 62a extends transverse to the longitudinal direction 56a of angle grinding machine 14a.
The protective cover anti-rotation lock 10a that is used for angle grinding machine 14a of the present invention shown in Figure 2.This protective cover anti-rotation lock 10a is set for particularly and prevents reversing between hand held power machine 14a and the protective cover unit 16a under the situation that cutter 18a damages.For this reason, this protective cover anti-rotation lock 10a has one and clamps band 20a, and this clampings band comprises that have a sealed profile 24a of a shape anti-reverses regional 22a, the power that occurs when being used to receive and/or be delivered in the situation of cutter 18a damage.
In addition; this protective cover anti-rotation lock 10a comprises protective cover unit 16a, this protective cover unit along circumferencial direction 28a, a 30a clamping band 20a one with described anti-reverse on the side 38a that regional 22a is located substantially on the opposite anti-be arranged in to clamp with reversing be with on the 20a.This clamping band 20a is connected with the protective cover neck 64a of protective cover unit 16a is anti-by means of spot welding with reversing, and wherein, this protective cover neck 64a is arranged in the inside of the face of clamped band 20a encirclement along the radial direction 66a of this clamping band 20a.Yet this clamping band 20a also can be connected with protective cover neck 64a is anti-by bonding or soldering with reversing.At this, this protective cover neck 64a is basically along circumferencial direction 28a, a 30a clamping band 20a and be assemblied in the confined state on the grinding machine 14a of angle basically the direction of extending along the rotation 68a of cutter 18a along one at protective cover unit 16a and extend.Except protective cover neck 64a, this protective cover unit 16a also has a protective cover 70a, and this protective cover roughly extends on 180 ° the angular range at one along the described circumferencial direction 28a, the 30a that clamp band 20a basically.
In addition, this protective cover anti-rotation lock 10a comprises receiving element 36a, and this receiving element is set for to receive at least in part and clamps band 20a and/or protective cover unit 16a.This receiving element 36a has a central opening 72a, and this opening is set for the cutter spindle (not being shown specifically at this) of acceptance angle grinding machine 14a, drives described cutter 18a the in service of angle grinding machine 14a rotatably by this cutter spindle.
In addition; protective cover anti-rotation lock 10a has a flux of energy element (Krafiflusselement) 26a, and this flux of energy element is set for the density that reduces flux of energy in anti-at least a portion of reversing regional 22a with respect to a sealed profile of pure shape.At this, flux of energy element 26a is arranged in anti-reversing among the regional 22a along the circumferencial direction 28a, the 30a that clamp band 20a.This flux of energy element 26a is constructed to the individual member made by steel plate and reverses regional 22a by spot welding and this clamping band 20a anti-be connected.Yet also possible is to be connected with clamping band 20a by soldering or bonding this flux of energy element 26a that makes.In addition, flux of energy element 26a also can be along the described circumferencial direction 28a that clamps band 20a, 30a melting welding, bonding or soldering on a plurality of shape latch members 42a of the sealed profile 24a of described shape.In order to allow simply this protective cover unit 16a to be assemblied on the receiving element 36a by the operating personnel of angle grinding machine 14a; flux of energy element 26a is disposed in a side 34a who deviates from receiving element 36a who clamps band 20a, thereby operating personnel are clamped in protective cover unit 16a only is directed to receiving element 36a in a rigging position a locking unit 40a who receives on the neck 74a and follow by means of clamping band 20a in the desired locations that receives on the neck 74a with protective cover unit 16a.Anti-regional 22a and the flux of energy element 26a of reversing is arranged in this clampings along these circumferencial directions 28a, the 30a that clamp band 20a and is with between the locking unit 40a and protective cover unit 16a of 20a (to this referring to Fig. 4).
After locking unit 40a locking or after protective cover unit 16a is clamped on the reception neck 74a, clamp the anti-sealed profile 24a of shape that reverses regional 22a that is with 20a and be coupled among the shape latch members 46a that receives neck 74a.The shape latch members 46a of the reception neck 74a of receiving element 36a arranges (to this referring to Fig. 3) along whole basically circumferencial direction 28a, the 30a that receive neck 74a.These shape latch members 46a has sidewall different in moulding (Flanken) 48a on the circumferencial direction 28a and on a circumferencial direction 30a opposite with this circumferencial direction 28a, and these sidewalls are set on these circumferencial directions 28a, 30a and realize the different sealed connections of shape with the anti-sealed profile 24a of shape that reverses regional 22a.The sealed profile 24a of this shape also has a plurality of shape latch members 42a for this reason, and these shape latch members are arranged in whole anti-reversing on the regional 22a basically along the circumferencial direction 28a, the 30a that clamp band 20a.These shape latch members 42a is on the circumferencial direction 28a that clamps band 20a and also have sidewall 44a different in its moulding (to this referring to Figure 4 and 5) on a circumferencial direction 30a opposite with this circumferencial direction 28a.
Receive neck 74a's and/or the circumferencial direction 28a that clamps band 20a extend along clockwise direction, wherein, receive neck 74a's and/or the opposite circumferencial direction 30a that clamps band 20a extend in the counterclockwise direction.At this, in order to define clockwise direction, should define a line of vision by a direction during processing to angle of entry grinding machine 14a perpendicular to the surface of stand-by angle grinding machine 14a processing, wherein, cutter 18a, particularly grinding dish are parallel to finished surface and arrange.
These sidewalls 44a of shape latch members 42a is configured to difference, so that realize depending on the power transmission (to this referring to Fig. 5) of direction.Shape latch members 42a is arranged in the anti-sidewall 44a that reverses among the regional 22a that clamps band 20a at one in the line of vision of the circumferencial direction 28a that clamps band 20a and has with regard to the value of the gradient than being arranged in the anti-big gradient of reversing among the regional 22a of sidewall 44a that clamps band 20a at one in the line of vision of the opposite circumferencial direction 30a that clamps band 20a.Thus, (at this moment fragment throws away towards protective cover unit 16a along the opposite circumferencial direction 30a that clamps band 20a basically) realized anti-reversing by being arranged in the anti-gradient of reversing the sidewall 44a among the regional 22a that clamps band 20a at one in the line of vision of the circumferencial direction 28a that clamps band 20a under the situation that cutter 18a damages.At this, the gradient of described sidewall 44a stops rotatablely moving of protective cover 16a, because the shape latch members 42a of the anti-sealed profile 24a of shape that reverses regional 22a is limited or is prevented from along the slip of the shape latch members 46a that receives neck 74a.The sidewall 48a that receives the shape latch members 46a of neck 74a has the conjugate profile that matches with the sidewall 44a of the shape latch members 42a of the sealed profile 24a of shape that prevents reversing regional 22a (to this referring to Fig. 3) for this reason.
The shape latch members 46a of receiving element 36a and the anti-shape latch members 42a that reverses the sealed profile 24a of shape of regional 22a are configured to zigzag.By means of this configuration of sidewall 44a, the 48a of these shape latch members 42a, 46a, realized along the direction of rotation 78a of cutter 18a that particularly advantageous shape is sealed between the shape latch members 42a of the shape latch members 46a of receiving element 36a and the anti-sealed profile 24a of shape that reverses regional 22a and be connected.The direction of rotation 78a of cutter 18a extends along described opposite circumferencial direction 30a basically.Under the situation that cutter 18a damages (at this moment cutter 18a breaks), the fragment of cutter 18a gets rid of towards protective cover unit 16a along the direction of rotation 78a of cutter 18a and/or along the described opposite circumferencial direction 30a that clamps band 20a basically.Thus, the sealed connection of shape prevent that protective cover unit 16a from reversing under this damaged condition between the shape latch members 42a of the shape latch members 46a by receiving element 36a and the anti-sealed profile 24a of shape that reverses regional 22a.Anti-the reversing additionally of protective cover unit 16a supported by flux of energy element 26a, stops the anti-distortion of reversing regional 22a because this flux of energy element 26a is set for basically, thereby by preventing that reversing regional 22a can transmit or receive big power.The different sidewall 44a of the different sidewall 48a of shape latch members 46a by receiving element 36a and the shape latch members 42a of the anti-sealed profile 24a of shape that reverses regional 22a; except anti-the reversing on the direction of rotation 78a of cutter 18a, operating personnel can make protective cover unit 16a against the direction of rotation 78a displacement of cutter and/or along the circumferencial direction 28a displacement that clamps band 20a.For 28a displacement along the circumferential direction, the locking unit 40a that clamps band 20a must get loose at least in part, so that realize a gap in the sealed connection of described shape.
The receiving element 36a of protective cover anti-rotation lock 10a of the present invention shown in Figure 3.This receiving element 36a has a groove 80a who extends along circumferencial direction 28a, the 30a of this receiving element 36a on reception neck 74a, this groove is set for axial restraint protective cover unit 16a.For this reason, protective cover unit 16a has a projection 82a (to this referring to Fig. 4,8 and 9) on the inboard of receiving element 36a at protective cover neck 64a.When being assemblied in protective cover unit 16a on this receiving element 36a, the projection 82a of this protective cover unit 16a is directed among this groove 80a by means of a breach 84a (not being shown specifically at this) who extends along rotation 68a on the circumference 86a that receives neck 74a.Be constructed to coding mechanism to breach 84a acting in conjunction on the circumference 86a of this projection 82a and reception neck 74a, protective cover unit 16a be assembled on its inapplicable hand held power machine 12a so that prevent.In addition, this projection 82a can be by means of a spring element (not being shown specifically at this) prestrain, thus protective cover unit 16a on being assemblied in receiving element 36 after by prestrain a little.
The subregion of the sealed profile 24a of shape shown in Figure 5.The sealed profile 24a of this shape has the wavy texture that remains unchanged along circumferencial direction 28a, 30a, and this wavy texture has different sidewall 44a.At this, the cross section 88a of the sealed profile 24a of this shape has the extension that remains unchanged along the radial direction 66a that clamps band 20a on the radial direction 66a that is clamping band 20a on the whole height that clamps band 20a.The height that clamps band 20a extends (to this referring to Fig. 6) at this perpendicular to this radial direction that clamps band 20a and perpendicular to the circumferencial direction 28a, the 30a that clamp band 20a.
The cross section 88a of the sealed profile 24a of shape among Fig. 5 shown in Figure 6.The cross section 88a of the sealed profile 24a of this shape extends whole basically anti-the reversing on the regional 22a that clamps band 20a along the circumferencial direction 28a, the 30a that clamp band 20a.Protective cover anti-rotation lock 10a anti-reversed and is similar to Fig. 2 and carries out.
At the embodiment that substitutes shown in Fig. 7 a to 9.Basically be denoted by like references on the member that remains unchanged, feature and the functional principle.Yet in order to distinguish these embodiment, the reference number of these embodiment has been added alphabetical a to e.Below explanation be confined to basically with Fig. 1 to 6 in the difference of embodiment, wherein, can be in the member that remains unchanged, feature and function aspects referring to the explanation of the embodiment among Fig. 1 to 6.
The cross section 88b that substitutes of the sealed profile 24b of shape in Fig. 6 shown in Fig. 7 a.This cross section 88b is constructed to the U-shaped profile basically, and wherein, fringe region 90b, the 92b of this cross section 88b is constructed to flux of energy element 26b.Thus, the sealed profile 24b of this flux of energy element 26b and this shape constitutes integratedly.For this reason, these fringe regions 90b, 92b have a material thickness on a radial direction 66b who clamps band 20b, and it is big that this material thickness constitutes the regional 94b on border than one by these fringe regions 90b, 92b.
The cross section 88c that another of the sealed profile 24c of shape in Fig. 6 shown in Fig. 7 b substitutes.The cross section 88c of the sealed profile 24c of this shape has the rib 98c of some groove 96c and/or some rib shapes, and they are not to extend on the whole height that clamps band 20c and extend along circumferencial direction 28c, a 30c clamping band 20c.The rib 98c of these grooves 96c and/or rib shape extends on a radial direction 66c who clamps band 20c.At this, the rib 98c of these grooves 96c and/or rib shape constitutes a flux of energy element 26c.Protective cover anti-rotation lock 10c anti-reversed and is similar to Fig. 2 and carries out.
The protective cover unit 16d of a protective cover anti-rotation lock 10d of the present invention shown in Figure 8, it has the clamping band 20d and/or the flux of energy element 26d that replace Fig. 4.This flux of energy element 26d has at least in part the protuberance 32d of arranged in succession before and after circumferencial direction 28d, the 30d of this clamping band 20d at this, and these protuberances are set for clamping that to carry out shape between band 20d and the flux of energy element 26d on described circumferencial direction 28d, 30d sealed.Protective cover anti-rotation lock 10d anti-reversed and is similar to Fig. 2 and carries out.
The protective cover unit 16e of a protective cover anti-rotation lock 10e of the present invention shown in Figure 9, it has the clamping band 20e and/or the flux of energy element 26e that replace Fig. 4.This flux of energy element 26e constitutes integratedly at this and this clamping band 20e.Protective cover anti-rotation lock 10e anti-reversed and is similar to Fig. 2 and carries out.
Claims (14)
- One kind be used for hand held power machine (12a), especially for the protective cover anti-rotation lock of angle grinding machine (14a), this protective cover anti-rotation lock is set for and prevents this hand held power machine (12a) and a protective cover unit (16a; 16d; Reversing 16e) particularly prevents this hand held power machine (12a) and a protective cover unit (16a under the situation that a cutter (18a) damages; 16d; Reversing 16e), this protective cover anti-rotation lock have one and clamp band (20a; 20d; 20e), this clamping band comprises that one has the sealed profile (24a of a shape; 24d; Anti-zone (the 22a that reverses 24e); 22d; 22e), it is characterized in that a flux of energy element (26a; 26b; 26c; 26d; 26e), this flux of energy element is set for respect to preventing reversing zone (22a at this; 22d; The sealed profile of a pure shape at least a portion 22e) reduces the density of flux of energy.
- 2. according to the protective cover anti-rotation lock of claim 1, it is characterized in that: described flux of energy element (26a; 26b; 26c; 26d; 26e) be set for prevention basically and should anti-reverse zone (22a; 22d; Distortion 22e).
- 3. each protective cover anti-rotation lock is characterized in that: described flux of energy element (26a in requiring according to aforesaid right; 26b; 26c; 26d; 26e) along described clamping band (20a; 20d; 20e) a circumferencial direction (28a, 30a; 28d, 30d; 28e 30e) is arranged in the anti-zone (22a that reverses; 22d; 22e).
- 4. each protective cover anti-rotation lock in requiring according to aforesaid right; it is characterized in that: described flux of energy element (26d) has some at least in part along a circumferencial direction (28d of described clamping band (20d); the shape that the protuberance of one after the other arranging 30d) (32d), these protuberances are set between this clamping band (20d) and this flux of energy element (26d) is sealed.
- 5. each protective cover anti-rotation lock is characterized in that: described flux of energy element (26a in requiring according to aforesaid right; 26b; 26c; 26d; 26e) be arranged in described clamping band (20a; 20d; One side (34a 20e), that deviate from a receiving element (36a); 34d; 34e).
- 6. each protective cover anti-rotation lock is characterized in that: described flux of energy element (26b in requiring according to aforesaid right; 26c; 26e) at least in part with described clamping band (20b; 20c; 20e) constitute integratedly.
- 7. each protective cover anti-rotation lock is characterized in that protective cover unit (16a in requiring according to aforesaid right; 16d; 16e), this protective cover unit is along described clamping band (20a; 20d; 20e) a circumferencial direction (28a, 30a; 28d, 30d; 28e, 30e) with the described anti-zone (22a that reverses; 22d; 22e) be located substantially on the side (38a on opposite; 38d; 38e) go up anti-this clamping band (20a that is arranged in with reversing; 20d; 20e).
- 8. according to the protective cover anti-rotation lock of claim 7, it is characterized in that: the described anti-zone (22a that reverses; 22d; 22e) and/or described flux of energy element (26a; 26b; 26c; 26d; 26e) along circumferencial direction (28a, the 30a of described clamping band; 28d, 30d; 28e 30e) is arranged in this clamping band (20a; 20d; Locking unit (40a 20e); 40d; 40e) with described protective cover unit (16a; 16d; 16e).
- 9. each protective cover anti-rotation lock according to the preamble of claim 1 and in particularly requiring according to aforesaid right is characterized in that: the sealed profile (24a of described shape; 24d; 24e) along described clamping band (20a; 20d; 20e) a circumferencial direction (28a, 30a; 28d, 30d; 28e 30e) has at least one shape latch members (42a; 42d; 42e), this shape latch members is at circumferencial direction (28a; 28d; 28e) and at one and this circumferencial direction (28a; 28d; 28e) opposite circumferencial direction (30a; 30d; Has sidewall (44a different in its moulding 30e); 44d; 44e), these sidewalls are set at these circumferencial directions (28a, 30a; 28d, 30d; 28e 30e) goes up the different sealed connection of shape of realization.
- 10. according to the protective cover anti-rotation lock of claim 9, it is characterized in that: described at least one shape latch members (42a; 42d; 42e) be configured to zigzag.
- 11. each protective cover anti-rotation lock is characterized in that a receiving element (36a) in requiring according to aforesaid right, this receiving element is set for to receive at least in part and clamps band (20a; 20d; 20e) and/or protective cover unit (16a; 16d; 16e).
- 12. at least according to the protective cover anti-rotation lock of claim 11; it is characterized in that: described receiving element (36a) is along a whole basically circumferencial direction (28a; 30a) have some shape latch members (46a); these shape latch members are on this circumferencial direction (28a) and have sidewall different in its moulding (48a) on a circumferencial direction (30a) opposite with this circumferencial direction (28a); these sidewalls are set in these circumferencial directions (28a, 30a) the upward different sealed connection of shape of realization.
- 13. the protective cover anti-rotation lock according to claim 12 is characterized in that: these shape latch members (46a) are configured to zigzag.
- 14. a hand held power machine, particularly angle grinding machine (14a), it has one according to each protective cover anti-rotation lock (10a in the aforesaid right requirement; 10d; 10e).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008040369.5 | 2008-07-11 | ||
| DE102008040369.5A DE102008040369B4 (en) | 2008-07-11 | 2008-07-11 | Guard anti-rotation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101623850A true CN101623850A (en) | 2010-01-13 |
Family
ID=41022356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910140022A Pending CN101623850A (en) | 2008-07-11 | 2009-07-10 | Protective guard rotation-locking device |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN101623850A (en) |
| DE (1) | DE102008040369B4 (en) |
| GB (2) | GB2461793B (en) |
| RU (1) | RU2009126417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103158071A (en) * | 2011-12-14 | 2013-06-19 | 株式会社牧田 | Grinder |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017213746A1 (en) | 2017-08-08 | 2019-02-14 | Robert Bosch Gmbh | Protective device for a hand tool machine |
| JP7451351B2 (en) * | 2020-08-26 | 2024-03-18 | 株式会社やまびこ | portable cutting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10235923A1 (en) * | 2002-08-06 | 2004-02-26 | Metabowerke Gmbh | Angle- or cutting grinder in electric hand tool form, has protective guard with clamping band carrying projections engaging recesses in clamping collar |
| CN1852785A (en) * | 2003-09-16 | 2006-10-25 | 罗伯特·博世有限公司 | Portable power tool with protective cover |
| WO2007131827A1 (en) * | 2006-05-12 | 2007-11-22 | Robert Bosch Gmbh | Protective hood for a hand tool and hand tool with a protective hood |
| DE102006053301A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Hand tool for a rotating tool with protective cover |
| WO2008058793A1 (en) * | 2006-11-13 | 2008-05-22 | Robert Bosch Gmbh | Portable power tool, especially angle grinder, comprising a protective hood |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10259520A1 (en) | 2002-12-19 | 2004-07-01 | Robert Bosch Gmbh | Electric hand tool |
| DE102006027576A1 (en) | 2006-06-14 | 2007-12-20 | Robert Bosch Gmbh | Guard attachment device |
| DE102008002468A1 (en) * | 2008-06-17 | 2009-12-24 | Robert Bosch Gmbh | Machine tool, in particular hand tool |
-
2008
- 2008-07-11 DE DE102008040369.5A patent/DE102008040369B4/en active Active
-
2009
- 2009-07-08 GB GB0911880.3A patent/GB2461793B/en not_active Expired - Fee Related
- 2009-07-08 GB GB1210189.5A patent/GB2492869B/en not_active Expired - Fee Related
- 2009-07-10 CN CN200910140022A patent/CN101623850A/en active Pending
- 2009-07-10 RU RU2009126417/02A patent/RU2009126417A/en not_active Application Discontinuation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10235923A1 (en) * | 2002-08-06 | 2004-02-26 | Metabowerke Gmbh | Angle- or cutting grinder in electric hand tool form, has protective guard with clamping band carrying projections engaging recesses in clamping collar |
| CN1852785A (en) * | 2003-09-16 | 2006-10-25 | 罗伯特·博世有限公司 | Portable power tool with protective cover |
| WO2007131827A1 (en) * | 2006-05-12 | 2007-11-22 | Robert Bosch Gmbh | Protective hood for a hand tool and hand tool with a protective hood |
| DE102006053301A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Hand tool for a rotating tool with protective cover |
| WO2008058793A1 (en) * | 2006-11-13 | 2008-05-22 | Robert Bosch Gmbh | Portable power tool, especially angle grinder, comprising a protective hood |
| WO2008058796A1 (en) * | 2006-11-13 | 2008-05-22 | Robert Bosch Gmbh | Portable power tool for a rotating tool comprising a protective hood |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103158071A (en) * | 2011-12-14 | 2013-06-19 | 株式会社牧田 | Grinder |
| CN103158071B (en) * | 2011-12-14 | 2016-03-09 | 株式会社牧田 | Grinder |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008040369A1 (en) | 2010-01-14 |
| GB2461793A (en) | 2010-01-20 |
| RU2009126417A (en) | 2011-01-20 |
| GB201210189D0 (en) | 2012-07-25 |
| DE102008040369B4 (en) | 2021-09-23 |
| GB2492869A (en) | 2013-01-16 |
| GB2461793B (en) | 2012-08-22 |
| GB0911880D0 (en) | 2009-08-19 |
| GB2492869B (en) | 2013-02-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100113 |