CN103561906B - Power tool brake mechanism and the hand tool containing brake unit - Google Patents
Power tool brake mechanism and the hand tool containing brake unit Download PDFInfo
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- CN103561906B CN103561906B CN201280024933.3A CN201280024933A CN103561906B CN 103561906 B CN103561906 B CN 103561906B CN 201280024933 A CN201280024933 A CN 201280024933A CN 103561906 B CN103561906 B CN 103561906B
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- Prior art keywords
- braking member
- brake
- unit
- power tool
- corresponding braking
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- 230000007246 mechanism Effects 0.000 title claims abstract description 41
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000000227 grinding Methods 0.000 claims description 24
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- 229910000906 Bronze Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
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- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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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
- B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
- B23Q11/0092—Safety devices protecting the operator, e.g. against accident or noise actuating braking or stopping means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention relates to power tool brake mechanism, especially hand-held tool machine braking device, it is provided with at least one mechanical braking unit (12) with at least one braking member rotatably supported (14), and is provided with at least one operating unit (16) being used for starting and/or discharging brake unit (12) with at least one operating element supported movingly (18).The present invention proposes, and operating element (18) is arranged for the rotation axis (22) of the corresponding braking member (20) relative brake element (14) at least making brake unit (12) in a duty and at least substantially vertically moves.
Description
Background technology
Power tool brake mechanism, especially hand-held tool machine braking device have been known, and it has a mechanical braking unit with the braking member rotatably supported and an operating unit for starting and/or discharge brake unit with the operating element supported movingly.
Summary of the invention
The starting point of the present invention is a power tool brake mechanism, especially hand-held tool machine braking device, it is provided with at least one mechanical braking unit with at least one braking member rotatably supported, and is provided with at least one operating unit for starting and/or discharge brake unit with at least one operating element supported movingly.
The present invention proposes, and operating element is provided to: at least make the rotation axis of a corresponding braking member relative brake element of brake unit at least substantially vertically move in a duty.Here " mechanical braking unit " word especially defines a brake unit, this brake unit is provided to: by a mechanically actuated, particularly by a component with between corresponding braking member and/or braking member directly contact by this component to corresponding braking member and/or braking member one power of applying at least make the corresponding braking member of brake unit and/or braking member transfer to application position and or off-position, especially unrelated with magnetic force." setting " be should be particularly understood that to specialized designs and/or special equipment.Here " application position " be should be particularly understood that to a position of corresponding braking member and/or braking member, this position is at least at least applied with a brake force so that the speed of component of this motion reduces in a predetermined time interval in a duty on the component of a motion, especially reduce at least above 50%, it is preferable that reduce at least above 65% and particularly preferably reduce at least above 80%.Here this predetermined interval is especially less than 5 seconds.Here the concept of " off-position " especially defines a position of corresponding braking member and/or braking member, and in this position, the effect for reducing the brake force of the speed on moving link is at least substantially prevented from.This mechanical braking unit is preferably arranged to: make component especially at one more than 0.1 second, be preferably more than 0.5 second and particularly preferably predetermined time interval less than 3 seconds start braking from an operating rate, especially brake in a speed, this speed less than operating rate 50%, be preferably less than the 20% of operating rate and particularly preferably brake in the speed of 0 meter per second.This mechanical braking unit is particularly preferably configured friction brakes.
Drive axle, the especially armature shaft of the motor unit of a hand tool of the rotation axis of a braking member preferably relative driver element coaxially extend.Brake unit is particularly preferably fixed on the driving shaft without relative rotation.Brake unit is preferably fixed on the driving shaft without relative rotation by press-fit in the case.But also contemplate for, brake unit by positive and/or material is sealed is fastened on driving axle.Additionally it is contemplated that braking member is fixed on another component of hand tool, for instance be fixed on the component of an actuating device etc..This braking member is particularly preferably configured braking dish.But also contemplating for, this braking member is configured brake drum.Braking dish preferably thinks another material significant by special steel and/or by professional, as sintered bronze, steel, nitrided steel, aluminum or another kind of surface-treated steel and or metal constitute.Here the expression of " at least substantially the rotation axis vertical ground motion of relative brake element " especially should be defined as the motion of corresponding braking member, especially by the motion that a supporting of corresponding braking member is predetermined, wherein at least one component motion of this motion extends in the plane that a rotation axis being at least substantially orthogonal to braking member extends.Corresponding braking member moves towards the direction of the pivot center deviating from braking member particular by operating element at least one state, especially in by application position to the transfer of off-position, and especially motion in the plane that this rotation axis at least substantially vertically extends relatively.Here the direction orientation of a relative reference direction especially should be defined as " substantially perpendicularly ", wherein the direction and reference direction are seen that the angle of one 90o of clamping and this angle have especially in one plane and are especially less than 8o, it is advantageous to less than 5o and particularly advantageously maximum deviation less than 2o.
Here should be particularly understood that a unit for " operating unit ", this unit is provided to: by the state of a superordinate elements of this operating unit of operation change of at least one operating element.This operating element is preferably provided with an axis of movement different from the rotation axis of braking member.Operating unit is particularly preferably except starting and/or being also provided to Guan Bi except release machinery brake unit and/or disconnect the current loop for driver element supplies energy.Preferably make corresponding braking member and/or braking member transfer to application position when starting brake unit by operating unit.And preferably make corresponding braking member and/or braking member transfer to off-position when discharging brake unit by operating unit.By the configuration of the power tool brake mechanism according to the present invention can be advantageously carried out one compact for braking the component of a motion, especially driving the device of axle.Therefore the inertia motion of moving link can advantageously be reduced in time.
The clinoid that corresponding braking member advantageously at least substantially extends parallel to around the rotation axis of a relative brake element supports deflectablely.Here should be particularly understood that relative one, the direction orientation of reference direction especially in one plane for " generally parallel ", wherein direction relative reference direction has one and is especially less than 8o, is advantageously below 5o and particularly advantageously deviation less than 2o.Corresponding braking member is preferably constructed to brake lever.This brake lever preferably supports in one end thereof deflectablely.Corresponding braking member is preferably provided with a brake(-holder) block.Here should be particularly understood that parts for " brake(-holder) block ", it is provided to: make the coefficient of friction of friction both sides improve with friction both sides, the especially braking member of a brakeless sheet compared with the coefficient of friction of the friction both sides between corresponding braking member.Brake(-holder) block can by positive, force closure and/or that material is sealed connection, for instance bonding connection, riveting, screw are connected or be fixed on corresponding braking member by the connection of the generation such as sintering process or pressure casting method.Here brake(-holder) block that brake(-holder) block can be configured the brake(-holder) block of sintering, organic brake(-holder) block, carbon are made brake(-holder) block, pottery are made or professional think significant another kind of brake(-holder) block.The effect of lever can advantageously be used to produce brake force.In addition corresponding braking member can be directed to simple in construction when motion.
Additionally propose: operating element at least substantially translatable with the axis of movement that the rotation axis of braking member extends parallel to supports along one.But also contemplating for, operating element has professional and thinks another axis of movement significant, for instance it is at least substantially orthogonal to the rotation axis of braking member.Operating element is preferably fixed on a slide switch being movably supported in toolroom machine housing.Here operating element is preferably constructed to action bars.But also contemplating for, operating element has professional and thinks another configuration significant.Therefore can advantageously resulting in a compact operating unit, it is arranged in the toolroom machine housing of hand tool with can saving structure space.
Brake unit is preferably provided with a spring element, and this spring element is provided at least corresponding braking member is being loaded a spring force on the direction of braking member.One macroscopical parts be should be particularly understood that for " spring element ", it has at least one development length, this length flexibly can change at least 10% in normal operation state, especially at least 20% is changed, preferably change at least 30% and particularly advantageously change 50%, and especially produce one with length change relevant and especially with the counteracting force changing over direct ratio, change is acted on by this power on the contrary." development length " of one parts be should be particularly understood that to the ultimate range between two points of these parts upright projection in one plane.One the parts of macroscopic view " " be should be particularly understood that one has the development length of at least 1mm, especially at least 5mm and is preferably at least the parts of development length of 10mm.This spring element is preferably arranged to pre-bias correspondence braking member.Here this spring element is preferably configured tension spring.But also contemplating for, this spring element has professional and thinks another configuration significant, for instance the configuration of a compression spring.Therefore can advantageously assure that and make corresponding braking member reliably be close on braking member and thus produce brake force at least one duty.
It is additionally proposed that brake unit has the corresponding braking member that at least one is other.Thus can being advantageously achieved a big braking surface, this braking surface can be used for the braking of the component of a motion.The clinoid that this other corresponding braking member advantageously extends parallel to around the rotation axis of another at least substantially relative brake element supports deflectablely.Therefore this other corresponding braking member is preferably also configured brake lever.This other corresponding braking member preferably also has a brake(-holder) block, and this brake(-holder) block material is fixed on other corresponding braking member in locking manner.High brake force can be advantageously produced by the leverage of this other corresponding braking member.
It is additionally proposed that spring element is fixed on one of corresponding braking member and is fixed on one of other corresponding braking member on the end of operating element on the end of operating element.Spring element be preferably located at end and the other corresponding braking member towards operating element of corresponding braking member between the end of operating element.Therefore spring element be especially provided to make corresponding braking member and other corresponding braking member when being transferred to application position by off-position reciprocally and move towards braking member.Therefore can ensure that corresponding braking member and other corresponding braking member, especially brake(-holder) block are reliably close on braking member in application position.
Operating element advantageously has at least one cam drive region, and this cam drive region is provided to the motion making the motion of operating element at least convert corresponding braking member to, especially yaw motion.Here " cam drive region " being should be particularly understood that to a region of operating element, this region is provided to change type of sports, such as translation and/or rotate, and/or changes the direction of motion, and particular by the interaction with another parts.Here cam drive region such as can be configured sloping platform, in order to this sloping platform of conversion moved interacts with another component.But also contemplating for, cam drive region is configured pin or groove, this pin and a groove or this groove and pin interact and/or cam drive region is configured professional and thinks another component significant.Cam drive region is particularly preferably configured sloping platform, it be arranged on operating element on the side of corresponding braking member.Sloping platform is integrally formed with operating element." integrally " be should be particularly understood that at least material is connected cohesively together, such as think other operation significant by welding sequence, bonding process, spray to cast operation and/or professional, and/or it is interpreted as that advantageously molding is to integrally, for instance by the manufacture of a foundry goods and/or by by one pack system or multi-component pressure injection-moulded method and advantageously by the manufacture of single blank.But also contemplating for, sloping platform is by the connection of positive and/or is fixed on operating element by the connection that material is sealed.This cam drive region preferably includes another sloping platform, this sloping platform be arranged on operating element on the side of other corresponding braking member.This another sloping platform is also integrally formed with operating element.Therefore the motion of operating element can be made to simple in construction to convert the motion of corresponding braking member to.
In addition the invention still further relates to hand tool, especially angle grinding machine, there is at least one power tool brake mechanism according to the present invention.Here should be particularly understood that a kind of toolroom machine, especially hand held power machine for " hand tool ", it can need not be transmitted by an operator and mechanically transmit.Hand tool especially has a quality, and this quality is less than 40kg, it is preferable that less than 20kg and particularly preferably less than 10kg.This hand tool is particularly preferably configured angle grinding machine.But also contemplating for, this hand tool has professional and thinks another configuration significant, for instance be configured hand planer, multi-purpose machine, portable milling machine, milling drum and/or electrically driven (operated) garden tool set machine.Therefore high operation comfort can be advantageously achieved for the operator of hand tool.
It is additionally proposed that this hand tool includes at least one driver element and at least one driven unit, wherein the brake unit of power tool brake mechanism is arranged on the side carrying driven unit of driver element.But also contemplating for, this brake unit may be disposed at the another position that professional thinks in significant hand tool, for instance be arranged on driver element on the side of driven unit, etc..Therefore brake unit combination in hand tool can be realized to simple in construction.
Hand tool in the case according to the power tool brake mechanism of the present invention and/or according to the present invention should not be limited in above-mentioned application and form of implementation.Power tool brake mechanism according to the present invention and/or the hand tool according to the present invention especially can have the number different from the number of all parts described here, component and unit for meeting working method as described herein.
Accompanying drawing explanation
The further advantage of the present invention can obtain illustrating from following accompanying drawing.Represent embodiments of the invention in the accompanying drawings.Accompanying drawing, specification and claims include multiple feature in combination.Professional may conform to destination and individually investigates these features and sum up other combination significant.
Accompanying drawing represents:
Fig. 1: according to the present invention the toolroom machine with a power tool brake mechanism according to the present invention represented with general view,
Fig. 2: the detail drawing of the toolroom machine according to the present invention of the motor field frame partly having removed a toolroom machine housing represented with general view,
Fig. 3: the electric motor assembly of the toolroom machine according to the present invention with dismounting represented with general view, detail drawing according to the toolroom machine of the present invention,
Fig. 4: the electric motor assembly of the toolroom machine according to the present invention with dismounting represented with general view, another detail drawing according to the toolroom machine of the present invention, and
Fig. 5: the detail drawing of a brake unit of the power tool brake mechanism according to the present invention represented with general view.
Detailed description of the invention
Fig. 1 represents the hand tool 40 being configured angle grinding machine 42 with a power tool brake mechanism 10.This angle grinding machine 42 includes a protective cover unit 48, a toolroom machine housing 50 and a Top carry handle 52.Top carry handle 52 begins at the principal spread direction 56 of the direction at least substantially relative angle grinding machine 42 direction carrying device housing 54 from a gear mechanism housing 54 of toolroom machine housing 50 and extends parallel to extend to the side 58 of toolroom machine housing 50, is provided with the feed cable 76 of the angle grinding machine 42 for supply of electrical energy on this side.But also contemplate in the configuration of the angle grinding machine 42 of a conversion: arranging an accumulator interface on this side 58 to replace feed cable 76, this accumulator interface is provided to supply with a diagonal angle grinding machine 42 accumulator (not shown here) of the angle grinding machine 42 of energy and is connected.Top carry handle 52 constitutes a motor field frame 60 of toolroom machine housing 50.Motor field frame 60 includes multiple housing parts region, and they can be dismantled individually.Here housing parts region can be configured bowl-type and/or tank shape.Toolroom machine housing 50 includes the motor field frame 60 of the driver element 44 for acceptance angle grinding machine 42 and the gear mechanism housing 54 of the driven unit 46 for acceptance angle grinding machine 42.Therefore angle grinding machine 42 includes driver element 44 and driven unit 46.Driver element 44 is provided to by a driven unit 46 powerful process tool rotatably.Here a main shaft 62(Fig. 2 is extended by gear mechanism housing 54), this main shaft can be fixed a process tool 64 for processing work (not shown here).Process tool 64 is configured grinding disc.But it is also contemplated that this process tool 64 is configured dividing disc or polishing disk.Driven unit 46 rotates, by one of driver element 44, the driver part (not shown here) driven and is connected with driver element 44 with the known methods of professional.This external gear mechanism housing 54 is provided with an additional hands 66.This additional hands vertically extends the principal spread direction 56 of relative angle grinding machine 42.
Fig. 2 represents the angle grinding machine 42 of the motor field frame 60 partly having removed toolroom machine housing 50.Here the housing parts region of a motor field frame 60 carrying gear mechanism housing 54 is removed.A mechanical braking unit 12 of the electronic building brick 68 and power tool brake mechanism 10 surrounding angle of entry grinding machine 42 is put in this housing parts region carrying the motor field frame 60 of gear mechanism housing 54 in installment state.Electronic building brick 68 is configured pre-assembled assembly.Here this electronic building brick 68 includes the electronic component (not shown here) for controlling and/or regulate driver element 44, one for close and/or for the current loop that disconnects the supply energy to driver element 44 machinery, electrical or electronic switch and for connecting the energy, feed cable 76 such as a local power network.Also feed cable 76 this electronic building brick 68 in conversion can being had an accumulator interface, this accumulator interface can be connected with angle grinding machine 42 accumulator (not shown here).Electronic building brick 68 has an electronic building brick housing 70, can fix each component of electronic building brick in this housing and/or on this housing.Here this electronic building brick housing 70 in assembled state at least partially around the element of electronic building brick 68.Electronic building brick 68 is fixed on the subregional side carrying gear mechanism housing 54 of housing section of motor field frame 60 by screw coupling part, and motor field frame is fixed on gear mechanism housing 54.But also contemplate for, by professional think another interconnection technique significant, such as by the connection of positive, electronic building brick 68 is fixed on this housing parts region.Power tool brake mechanism 10, in the assembled state of electronic building brick 68, is seen along principal spread direction 56, and its major part is arranged between electronic building brick 68 and driver element 44, and this driver element is configured motor unit.
Power tool brake mechanism 10 includes mechanical braking unit 12, and this brake unit has the braking member 14 rotatably supported.Here the brake unit 12 of power tool brake mechanism 10 is arranged on the side carrying driven unit 48 of driver element 44.Braking member 14 is configured braking dish, and it without relative rotation, force closure is fixed on an armature shaft 72 of the driver element 44 constituting motor unit by press-fit.But also contemplate for, braking member 14 think by professional significant another kind of connect, such as positive and/or connection that material is sealed be fixed on without relative rotation on armature shaft 72.Braking member 14 is arranged on the side carrying driven unit 46 of armature shaft 72.The side carrying driven unit 46 of this external armature shaft 72 secures a velometer wheel 74(Fig. 3 on armature shaft 72) without relative rotation.This velometer wheel 74 be provided to the detection rotary speed property parameters of armature shaft 72 and be transferred to for control and/or regulate driver element 44, the electronic component that is located in electronic building brick 68.Power tool brake mechanism 10 also includes an operating unit 16 for starting and/or discharge brake unit 12, the operating element 18 that this operating unit supports with having a motion.Operating element 18 is provided to: at least make in a duty a corresponding braking member 20 of brake unit 12 at least substantially with rotation axis 22 vertical ground motion of braking member 14.
Operating element 18 at least substantially translatable with the axis of movement 26 that the rotation axis 22 of braking member 14 extends parallel to supports along one.Here operating element 18 is configured action bars.It is configured the operating element 18 of action bars to be fixed on an operating element 78 of operating unit 16 by the connection of positive.But also contemplate for: operating element 18 is thought significant by professional and another kind of connected, for instance force closure and/or connection that material is sealed be fixed on operating element 78.Operating element 78 is configured slide switch, is bearing in a breach of motor field frame 60 to its translatable motion.But also contemplate for: operating element 78 has professional and thinks significant another kind of configuration, for instance being made the configuration of the multiplex switch that inclines, it is bearing in a breach of motor field frame 60 deflectablely.Operating unit 16 is except starting and/or being also provided to Guan Bi except release brake unit 12 and/or disconnect the current loop supplying energy for diagonal angle grinding machine 42.Here operating element 18 has an operation flange 80 being integrally molded on operating element 18..But also contemplate for: operation flange 80 is thought significant by professional and another kind of connected, for instance positive and/or the connection of force closure be fixed on operating element 18.Operation flange 80 is provided to mechanical, an electrical or electronic switch of operation electronic building brick 68.The installment state of operating element 18 operates flange 80 be arranged on the side carrying gear mechanism housing 54 of operating element 18.In addition operating unit 16 has a back-moving spring part 82, and this back-moving spring part is provided to operating element 18 load a spring force to carrying the direction of gear mechanism housing 54.Thus towards the direction in a home position, operating element 18 and operating element 78 being loaded a spring force, in this home position, diagonal angle grinding machine 42 supplies the current loop of energy is startup for disconnection and brake unit 12.
When operating element 78 is moved and thus operating element 18 starts to make the corresponding braking member 20 of brake unit 12 to be moved to an off-position (Fig. 3 and 4) by an application position (Fig. 5) from home position.Corresponding in the case braking member 20 at least substantially with rotation axis 22 vertical ground motion of braking member 14.The clinoid 24 that corresponding braking member 20 extends parallel to around the rotation axis 22 of an at least substantially relative brake element 14 supports deflectablely.Brake unit 12 also has another corresponding braking member 30(Fig. 3 and 4).This other corresponding braking member 30 is rotation axis 22 vertical ground motion of at least substantially relative brake element 14 too when operating element 78 and operating element 18 operate.The clinoid 32 that this other corresponding braking member 30 extends parallel to around the rotation axis 22 of an at least substantially relative brake element 14 in the case supports deflectablely.When corresponding braking member 20 and other corresponding braking member 30 move to off-position by application position, correspondence braking member 20 and other corresponding braking member 30 deflect along a direction deviating from braking member 14.Friction between braking member 14 with corresponding braking member 20,30 is sealed in the case will be eliminated.Corresponding braking member 20 and other corresponding braking member 30 are configured brake lever 84,86.Brake lever 84,86 respectively has a support holes 88,90.In the installment state of brake lever 84,86, the support holes of brake lever 84,86 is respectively arranged on a supporting bolt 92,94 of motor field frame 69.The each holding member (not shown here) by angle grinding machine 42 of brake lever 84,86 is maintained on supporting bolt 92,94 in the axial direction.Here holding member can be configured back-up ring, screw, backstop and/or professional and thinks other parts significant.
In order to make corresponding braking member 20 and other corresponding braking member 30 motor performance element 18 have a cam drive region 38, this cam drive region is provided to the motion making the motion of operating element 18 convert corresponding braking member 20 and other corresponding braking member 30 to.Here cam drive region 38 has a sloping platform 96 on the side towards corresponding braking member 20.In addition cam drive region has another sloping platform 98 on the side towards other corresponding braking member 30.Here sloping platform 96 and another sloping platform 98 are provided to make the translational motion of operating element 18 to convert the yaw motion of corresponding braking member 20 and other corresponding braking member 30 to.Thus corresponding braking member 20 and other corresponding braking member 30 start from application position to deflect into the off-position leaving braking member 14.Therefore the contact between braking member 14 with corresponding braking member 20,30 is cancelled.
Corresponding braking member 20 and other corresponding braking member 30 respectively have the parts 100,102 reducing friction at one on the end in cam drive region 38.Here these parts 100,102 reducing friction are configured plastic sheath, and they are provided to reduce the friction between friction area 38 and corresponding braking member 20,30.But also contemplate for: reduce the parts 100,102 of friction and there is professional think another configuration significant, for instance for be made corresponding braking member 20,30 towards the polytetrafluorethylecoatings coatings on the end in cam drive region 38.In addition corresponding braking member 20 and other corresponding braking member 30 respectively have brake(-holder) block 104, a 106(Fig. 3, and 4 and 5).The brake(-holder) block 104 of corresponding braking member 20 be arranged on corresponding braking member 20 on the side of braking member 14.The brake(-holder) block 106 of corresponding braking member 30 additionally be arranged on other corresponding braking member 30 on the side of braking member 14.Here the friction that brake(-holder) block 104,106 produces between braking member 14 and corresponding braking member 20,30 in the application position of corresponding braking member 20 and other corresponding braking member 30 is sealed.Therefore in the application position of corresponding braking member 20 and other corresponding braking member 30, brake(-holder) block 104,106 abuts against on the periphery 108 of braking member 14.Here periphery 108(Fig. 3 of braking member, 4 and 5) circumferencial direction 110 in the plane at least substantially vertically extended along a rotation axis 22 extending in a relative brake element 14 extends.
In order to the brake unit that is reliably adjacent to of the brake(-holder) block 104,106 of corresponding braking member 20,30 has a spring element 28(Fig. 3,4 and 5).This spring element 28 is provided on the direction towards braking member 14 corresponding braking member 20 is loaded a spring force.In addition this spring element 28 is provided on the direction towards braking member 14 other corresponding braking member 30 is loaded a spring force.Spring element 28 is fixed on one of corresponding braking member 20 and and is fixed on one of other corresponding braking member 30 on the end 36 of operating element 18 on the end 34 of operating element 18.Here spring element 28 is configured tension spring.Therefore corresponding braking member 20 and other corresponding braking member 30 by spring element 28 by mutual spring loaded.But also contemplating for, brake unit 12 has more than one spring element 28, they are provided to the direction towards braking member 14 to corresponding braking member 20 and other corresponding braking member 30 spring loaded.Brake unit 12 such as has two compression springs in the case, and they are respectively supported on one end on the inwall of motor field frame 60 and are supported on corresponding braking member 20 or other corresponding braking member 30 with the other end.When this external braking member 14 constitutes brake drum, wherein brake lever 84,86 are surrounded by the braking member 14 constituting brake drum at least in part, then can consider: spring element 28 is configured compression spring, it on the direction of the inner peripheral surface towards braking member 14 to brake lever 84,86 spring loaded.
The direction operation operating element 78 passing through to toward gear mechanism housing 54 when angle grinding machine 42 is devoted oneself to work makes operating element 18 move.Mechanical, an electrical or electronic switch of electronic building brick 68 is thus operated by the operation flange 80 of operating element 18.In addition cam drive region 38 motion between corresponding braking member 20 and other corresponding braking member 30 is made.Sloping platform 96 and another sloping platform 98 are at the parts 100 reducing friction of corresponding braking member 20,30 in the case.Move on 102.Gradient by sloping platform 96 makes each square clinoid 24,32 upwards about corresponding braking member 20,30 at the rotation axis 22 deviating from braking member 14 of corresponding braking member 20,30 deflect with the combined effect of the gradient of sloping platform 98.Friction between braking member 14 with the brake(-holder) block 104,106 of corresponding braking member 20,30 is sealed to be released.Therefore corresponding braking member 20 and corresponding braking member 30 are in off-position.Therefore the armature shaft 72 fixing braking member 14 thereon without relative rotation puts into rotation due to the energising by making current loop close by the operation of electronic building brick 68 mechanical, electrical or electronic switch.
Operating element 78 will be made to move towards the direction deviating from gear mechanism housing 54 when angle grinding machine 42 shuts down.This of operating element 78 in the case moves the support of the back-moving spring element 82 being operated unit 16.Combined effect by the spring force of the gradient of sloping platform 96, the gradient of another sloping platform 98 and spring element 28 will make corresponding braking member 20 and other corresponding braking member 30 deflect upwards about clinoid 24,32 in the side of the rotation axis 22 towards braking member 14.Thus make the brake(-holder) block 104,106 of corresponding braking member 20,30 be formed with the periphery of braking member 14 to contact.Therefore friction between braking member 14 with corresponding braking member 20,30 is sealed completes and armature shaft 72 is braked when the postboost inertia of angle grinding machine 42 rotates.
Claims (11)
1. power tool brake mechanism, it is provided with at least one mechanical braking unit (12) with at least one braking member rotatably supported (14), and it is provided with at least one operating unit (16) being used for starting and/or discharging brake unit (12) with at least one operating element supported movingly (18), it is characterized in that: operating element (18) is provided to: at least make the rotation axis (22) of a corresponding braking member (20) relative brake element (14) of brake unit (12) at least substantially vertically move in a duty, wherein, operating element (18) translatable with the axis of movement (26) that the rotation axis of braking member (14) (22) at least substantially extends parallel to supports along one.
2. power tool brake mechanism according to claim 1, it is characterised in that: corresponding braking member (20) around the clinoid (24) that the rotation axis (22) of a relative brake element (14) at least substantially extends parallel to deflectable support.
3. the power tool brake mechanism according to claim 1 or 2, it is characterized in that: brake unit (12) has a spring element (28), this spring element is provided on the direction towards braking member (14) at least corresponding braking member (20) is loaded a spring force.
4. the power tool brake mechanism according to claim 1 or 2, it is characterised in that: brake unit (12) has the corresponding braking member (30) that at least one is other.
5. power tool brake mechanism according to claim 4, it is characterised in that: the clinoid (32) that this other corresponding braking member (30) at least substantially extends parallel to around the rotation axis (22) of another relative brake element (14) supports deflectablely.
6. power tool brake mechanism according to claim 4, it is characterised in that: spring element (28) is fixed on the end towards operating element (18) (34) of corresponding braking member (20) and above and is fixed on the end towards operating element (18) (36) of described other corresponding braking member (30).
7. power tool brake mechanism according to claim 4, it is characterized in that: operating element (18) has at least one cam drive region (38), this cam drive region is provided to the motion making the motion of operating element (18) at least convert corresponding braking member (20) to.
8. power tool brake mechanism according to claim 1, it is characterised in that: this power tool brake mechanism is hand-held tool machine braking device.
9. hand tool, has at least one power tool brake mechanism according to any one of the preceding claims.
10. hand tool according to claim 9, it is characterized in that: be provided with at least one driver element (44) and at least one driven unit (46), wherein, the brake unit (12) of power tool brake mechanism is arranged on the side carrying driven unit (46) of driver element (44).
11. hand tool according to claim 10, it is characterised in that: this hand tool is angle grinding machine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110076345 DE102011076345A1 (en) | 2011-05-24 | 2011-05-24 | Machine tool braking device |
| DE102011076345.7 | 2011-05-24 | ||
| PCT/EP2012/055583 WO2012159801A1 (en) | 2011-05-24 | 2012-03-29 | Power tool brake mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103561906A CN103561906A (en) | 2014-02-05 |
| CN103561906B true CN103561906B (en) | 2016-07-27 |
Family
ID=45937323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280024933.3A Expired - Fee Related CN103561906B (en) | 2011-05-24 | 2012-03-29 | Power tool brake mechanism and the hand tool containing brake unit |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN103561906B (en) |
| DE (1) | DE102011076345A1 (en) |
| RU (1) | RU2628270C2 (en) |
| WO (1) | WO2012159801A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537975B (en) * | 2014-10-28 | 2017-08-25 | 富鼎电子科技(嘉善)有限公司 | Sliding equipment and the processing unit (plant) using the sliding equipment |
| EA032026B1 (en) * | 2015-07-24 | 2019-03-29 | Юрий Цепуритс | Individual rescue device |
| DE102016125765A1 (en) * | 2016-12-28 | 2018-06-28 | Metabowerke Gmbh | Electric hand tool |
| CN210115785U (en) * | 2018-12-17 | 2020-02-28 | 米沃奇电动工具公司 | Angle grinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB664051A (en) * | 1949-03-09 | 1951-01-02 | Cosby Donald Philipps Smallpei | Improvements relating to machine-tools such as lathes |
| CN1095327A (en) * | 1993-02-26 | 1994-11-23 | 克雷斯电气电动马达有限公司 | The switching device that is used for electric tool |
| CN1111334A (en) * | 1993-12-28 | 1995-11-08 | 希尔蒂股份公司 | Method and apparatus for avoiding handtool machine from fault of clamping too tight of tool |
| CN2225932Y (en) * | 1995-07-25 | 1996-05-01 | 浙江永康恒丰电器制造公司 | Electric poloidal abrader |
| DE19900882A1 (en) * | 1999-01-12 | 2000-07-13 | Bosch Gmbh Robert | Hand-held machine tool, especially drill or angle grinder, has locking and blocking elements brought into engagement axially in direction of blocking element rotation axis in uncontrolled state |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1212864A (en) * | 1967-06-17 | 1970-11-18 | Broughton Engineering Ltd | Improvements relating to brakes for power presses and like machines |
| GB1253361A (en) * | 1968-04-18 | 1971-11-10 | Prec Gear Machines & Tools Ltd | Machine for chamfering or otherwise finishing the ends of teeth on gears or other toothed members |
| FR2697600B1 (en) * | 1992-10-30 | 1994-12-02 | Bendix Europ Services Tech | Drum brake with mechanical actuation. |
-
2011
- 2011-05-24 DE DE201110076345 patent/DE102011076345A1/en not_active Withdrawn
-
2012
- 2012-03-29 RU RU2013157029A patent/RU2628270C2/en not_active IP Right Cessation
- 2012-03-29 WO PCT/EP2012/055583 patent/WO2012159801A1/en active Application Filing
- 2012-03-29 CN CN201280024933.3A patent/CN103561906B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB664051A (en) * | 1949-03-09 | 1951-01-02 | Cosby Donald Philipps Smallpei | Improvements relating to machine-tools such as lathes |
| CN1095327A (en) * | 1993-02-26 | 1994-11-23 | 克雷斯电气电动马达有限公司 | The switching device that is used for electric tool |
| CN1111334A (en) * | 1993-12-28 | 1995-11-08 | 希尔蒂股份公司 | Method and apparatus for avoiding handtool machine from fault of clamping too tight of tool |
| CN2225932Y (en) * | 1995-07-25 | 1996-05-01 | 浙江永康恒丰电器制造公司 | Electric poloidal abrader |
| DE19900882A1 (en) * | 1999-01-12 | 2000-07-13 | Bosch Gmbh Robert | Hand-held machine tool, especially drill or angle grinder, has locking and blocking elements brought into engagement axially in direction of blocking element rotation axis in uncontrolled state |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011076345A1 (en) | 2012-11-29 |
| RU2628270C2 (en) | 2017-08-15 |
| WO2012159801A1 (en) | 2012-11-29 |
| RU2013157029A (en) | 2015-06-27 |
| CN103561906A (en) | 2014-02-05 |
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