CN103561906A - Power tool brake mechanism - Google Patents
Power tool brake mechanism Download PDFInfo
- Publication number
- CN103561906A CN103561906A CN201280024933.3A CN201280024933A CN103561906A CN 103561906 A CN103561906 A CN 103561906A CN 201280024933 A CN201280024933 A CN 201280024933A CN 103561906 A CN103561906 A CN 103561906A
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- China
- Prior art keywords
- braking member
- executive component
- brake
- unit
- corresponding braking
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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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- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention proceeds from a power tool brake mechanism, in particular from a portable power tool brake mechanism, having at least one mechanical brake unit (12) which has at least one rotatably mounted brake element (14), and having at least one actuating unit (16) for activating and/or deactivating the brake unit (12), which has at least one movably mounted actuating element (18). It is proposed that the actuating element (18) is provided, at least in an operating state, to move a counter-brake element (20) of the brake unit (12) at least substantially perpendicularly to a rotation axis (22) of the brake element (14).
Description
Background technology
Toolroom machine brake apparatus, especially hand-held tool machine braking device has been known, it have a mechanical braking unit with the braking member of rotatably support and one have supporting movingly executive component for starting and/or the operating unit of releasing brake unit.
Summary of the invention
Starting point of the present invention is a toolroom machine brake apparatus, hand-held tool machine braking device especially, it is provided with the mechanical braking unit of at least one braking member with at least one rotatably support, and be provided with at least one have at least one executive component supporting movingly for starting and/or the operating unit of releasing brake unit.
The present invention proposes, and executive component is provided to: at least in a duty, make the rotation of a relative braking member of corresponding braking member of brake unit at least substantially perpendicularly move.Here " mechanical braking unit " word especially defines a brake unit, this brake unit is provided to: by a mechanically actuated, especially by the direct contact between a member and corresponding braking member and/or braking member by this member to corresponding braking member and/or braking member apply a power at least make the corresponding braking member of brake unit and/or braking member transfer to application position and or off-position, especially irrelevant with magnetic force.For " setting ", be especially interpreted as specialized designs and/or special equipment.Here for " application position ", be especially interpreted as a position of corresponding braking member and/or braking member, on this position, at least in a duty, on the member of a motion, at least applied a brake force so that the speed of the member of this motion reduces in a predetermined time interval, especially reduced and be at least greater than 50%, preferably reduced and be at least greater than 65% and particularly preferably reduced and be at least greater than 80%.Here interval is especially less than 5 seconds this predetermined time.Here the concept of " off-position " especially defines in the ，Gai position, a position of corresponding braking member and/or braking member and is at least substantially prevented from for reducing the effect of the brake force of the speed on moving link.This mechanical braking unit is preferably provided to: make member especially at one, be greater than 0.1 second, be preferably more than 0.5 second and be particularly preferably less than the predetermined time interval of 3 seconds in since an operating rate braking, especially brake in a speed, this speed be less than operating rate 50%, be preferably less than operating rate 20% and particularly preferably brake in the speed of 0 meter per second.This mechanical braking unit is particularly preferably configured friction brakes.
The rotation of braking member is driving shaft, the especially armature shaft coaxial line ground extension of the motor unit of a hand tool of a relative driver element preferably.Brake unit is particularly preferably fixed on driving shaft without relative rotation.Brake unit is preferably fixed on driving shaft without relative rotation by interference fit in the case.But also can consider, brake unit by shape sealed and/or material is sealed is fastened on driving shaft.Can consider in addition, braking member is fixed on another member of hand tool, such as being fixed on the member of transmission device etc.This braking member is particularly preferably configured brake disc.But also can consider, this braking member is configured brake drum.Brake disc is preferably thought significant another material by special steel and/or by professional, as sintered bronze, steel, nitrided steel, aluminium or another kind of surface-treated steel and or metal form.Here the expression of " the rotation vertical ground motion of relative braking member at least substantially " especially should be defined as the motion of corresponding braking member, especially the predetermined motion of the supporting of by corresponding braking member, wherein at least one component motion of this motion extends in the plane that a rotation that is at least substantially perpendicular to braking member extends.Corresponding braking member at least one state, especially especially moved towards the direction that deviates from the pivot center of braking member by executive component in the transfer of off-position by application position, and especially moves in the plane that this rotation at least substantially perpendicularly extends relatively.Here for " substantially perpendicularly ", especially should be defined as the direction orientation of a relative reference direction, wherein this direction and reference side especially see in a plane that to – – clamps the angle of a 90o and this angle and has and be especially less than 8o, are advantageously less than 5o and are particularly advantageously less than the maximum deviation of 2o.
Here for " operating unit ", being especially interpreted as ，Gai unit, a unit is provided to: the state of a higher level unit of this operating unit of operation change by least one executive component.This executive component preferably has an axis of movement different from the rotation of braking member.Operating unit is particularly preferably also provided to closure and/or disconnects for driver element being supplied with to the current loop of energy except starting and/or discharging mechanical brake unit.In the situation that starting brake unit by operating unit, preferably make corresponding braking member and/or braking member transfer to application position.And preferably make corresponding braking member and/or braking member transfer to off-position by operating unit releasing brake unit in the situation that.By the configuration of toolroom machine brake apparatus according to the present invention can advantageously realize one compact for braking the member of a motion, the device of driving shaft especially.Therefore can advantageously reduce in time the inertia motion of moving link.
Corresponding braking member advantageously around the rotation of a relative braking member at least substantially parallel the clinoid that extends can support to deflection.Here for " substantially parallel ground ", be especially interpreted as relative one, the direction orientation of the reference direction in a plane especially, wherein this direction relative reference direction has a deviation that is especially less than 8o, is advantageously less than 5o and is particularly advantageously less than 2o.Corresponding braking member is preferably configured brake lever.This brake lever is preferably in one end thereof and can supports to deflection.Corresponding braking member preferably has a brake(-holder) block.Here for " brake(-holder) block ", be especially interpreted as parts, it is provided to: with the friction both sides of a brakeless sheet, coefficient of friction that especially coefficient of friction of the friction both sides between braking member and corresponding braking member is compared the both sides that make to rub improves.The connection that brake(-holder) block can be sealed, force closure by shape and/or material is sealed, connects or connection by generations such as sintering process or pressure casting methods is fixed on corresponding braking member such as bonding connection, riveting, screw.Here brake(-holder) block can be configured the brake(-holder) block of sintering, brake(-holder) block that organically brake(-holder) block, carbon are done, the brake(-holder) block that pottery is done or professional and thinks significant another kind of brake(-holder) block.The effect of lever can advantageously be used to produce brake force.In addition corresponding braking member when motion can be simple in structure be directed to.
Propose in addition: executive component can support to translation along an axis of movement at least substantially extending abreast with the rotation of braking member.But also can consider, executive component has professional and thinks significant another axis of movement, and for example it is at least substantially perpendicular to the rotation of braking member.Executive component is preferably fixed on a slide switch being bearing in movably in toolroom machine housing.Here executive component is preferably configured action bars.But also can consider, executive component has professional and thinks significant another configuration.Therefore can advantageously obtain a compact operating unit, it can be saved structure space and be arranged in the toolroom machine housing of hand tool.
Brake unit preferably has a spring element, and this spring element is provided at least corresponding braking member be loaded to a spring force in the direction towards braking member.For " spring element ", be especially interpreted as macroscopical parts, it has at least one development length, this length can flexibly change at least 10% in routine work state, especially change at least 20%, preferably change at least 30% and particularly advantageously change 50%, and especially produce change to length relevant and especially with the reaction force that changes over direct ratio, this power is to changing effect on the contrary.For " development length " of parts, be especially interpreted as the ultimate range between two points of these parts upright projection in one plane.For one " macroscopic view parts ", be especially interpreted as one and there are the development length of 1mm at least, especially at least 5mm and the best parts of the development length of 10mm at least.This spring element is preferably provided to the corresponding braking member of pre-bias voltage.Here this spring element is preferably configured tension spring.But also can consider, this spring element has professional and thinks significant another configuration, for example configuration of a compression spring.Therefore can advantageously guarantee to make at least one duty corresponding braking member be close to reliably on braking member and produce thus brake force.
Propose in addition, brake unit has at least one other corresponding braking member.Can advantageously reach a large braking surface thus, this braking surface can be used for the braking of the member of a motion.This other corresponding braking member advantageously can support to deflection around another clinoid that rotation of braking member extends abreast relatively at least substantially.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.Leverage by this other corresponding braking member can advantageously produce high brake force.
Propose in addition, spring element is fixed on of corresponding braking member on the end of executive component and is fixed on of other corresponding braking member on the end of executive component.The end towards executive component that spring element is preferably arranged on corresponding braking member and other corresponding braking member towards between the end of executive component.Therefore spring element be especially provided to make corresponding braking member and other corresponding braking member when transferring to application position by off-position reciprocally and towards braking member move.Therefore can guarantee in application position corresponding braking member and other corresponding braking member, especially brake(-holder) block is close on braking member reliably.
Executive component advantageously has at least one cam drive region, and this cam drive region is provided to make the motion of executive component at least to convert motion, the especially yaw motion of corresponding braking member to.Here the ，Gai region, a region that is especially interpreted as executive component for " cam drive region " is provided to change type of sports, for example translation and/or rotation, and/or changes the direction of motion, and especially by the interaction with another parts.Here cam drive region for example can be configured sloping platform, for this sloping platform of conversion and another member moving interacts.But also can consider, cam drive region is configured pin or groove, this pin and a groove or this groove and one pin interacts and/or cam drive region is configured professional and thinks significant another member.Cam drive region is particularly preferably configured sloping platform, it be arranged on executive component in a side of corresponding braking member.Sloping platform and executive component are integrally formed.For " one ", being especially interpreted as at least material connects in locking manner, for example by welding sequence, bonding process, spray to cast operation and/or professional, think significant other operation, and/or be interpreted as and be advantageously formed into one, for example manufacture by 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 can consider, by the sealed connection of shape and/or by material, sealed connection is fixed on executive component sloping platform.This cam drive region preferably includes another sloping platform, this sloping platform be arranged on executive component in a side of other corresponding braking member.This another sloping platform is also integrally formed with executive component.So the motion that can make executive component converts the motion of corresponding braking member to simple in structurely.
In addition the invention still further relates to hand tool, angle grinding machine especially, there is at least one according to toolroom machine brake apparatus of the present invention.Here for " hand tool ", be especially interpreted as a kind of toolroom machine, hand held power machine especially, it can need not be transmitted mechanically and be transmitted by an operator.Hand tool especially has a quality, and this quality is less than 40kg, is preferably less than 20kg and is particularly preferably less than 10kg.This hand tool is particularly preferably configured angle grinding machine.But also can consider, this hand tool has professional to be thought and is for example configured hand planer, multi-purpose machine, portable milling machine, milling drum by significant another configuration, and/or electrically driven (operated) garden tool set machine.Therefore the operator for hand tool can advantageously reach high operation comfort.
Propose in addition, this hand tool comprises at least one driver element and at least one driven unit, and wherein the brake unit of toolroom machine brake apparatus is arranged in a side of carrying driven unit of driver element.But also can consider, this brake unit can be arranged on professional and think another position in significant hand tool, be for example arranged on driver element in a side of driven unit, etc.Therefore can realize the combination of brake unit in hand tool simple in structurely.
According to toolroom machine brake apparatus of the present invention and/or according to hand tool of the present invention, should not be limited in above-mentioned application and form of implementation in the case.According to toolroom machine brake apparatus of the present invention and/or hand tool according to the present invention, for meeting working method as described herein, especially can there is the number different from the number of all parts described here, member and unit.
Accompanying drawing explanation
Other advantage of the present invention can obtain from following accompanying drawing explanation.Express in the accompanying drawings embodiments of the invention.Accompanying drawing, description and claims comprise a plurality of features in combination.Professional can meet destination and individually investigate these features and sum up significant other combination.
Accompanying drawing represents:
Fig. 1: with general view, represent have one according to toolroom machine brake apparatus of the present invention according to a toolroom machine of the present invention,
Fig. 2: the motor field frame of partly having removed a toolroom machine housing representing with general view according to the detail drawing of toolroom machine of the present invention,
Fig. 3: with general view, represent have dismounting according to the electric motor assembly of toolroom machine of the present invention, according to the detail drawing of toolroom machine of the present invention,
Fig. 4: with general view, represent have dismounting according to the electric motor assembly of toolroom machine of the present invention, according to another detail drawing of toolroom machine of the present invention, and
Fig. 5: with general view, represent according to the detail drawing of toolroom machine brake apparatus of the present invention brake unit.
The specific embodiment
Fig. 1 represents to have the hand tool that is configured angle grinding machine 42 40 of a toolroom machine brake apparatus 10.This angle grinding machine 42 comprises 48, one of protective cover unit toolroom machine housing 50 and a Top carry handle 52.Top carry handle 52 from the gear mechanism housing 54 of toolroom machine housing 50 start on the direction of carrying device housing 54 this direction of – at least substantially the principal spread direction 56 of relative angle grinding machine 42 prolong abreast and stretch the side 58 that – extends to toolroom machine housing 50 always, in this side, be provided with the feed cable 76 for the angle grinding machine 42 of supply of electrical energy.But also can consider in the configuration of the angle of conversion grinding machine 42: a battery interface is set in this side 58 and replaces feed cable 76, the battery (not shown here) that this battery interface is provided to supply with the angle grinding machine 42 of energy with a diagonal angle grinding machine 42 is connected.Top carry handle 52 forms a motor field frame 60 of toolroom machine housing 50.Motor field frame 60 comprises a plurality of 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 comprises for the motor field frame 60 of the driver element 44 of acceptance angle grinding machine 42 and for the gear mechanism housing 54 of the driven unit 46 of acceptance angle grinding machine 42.Therefore angle grinding machine 42 comprises driver element 44 and driven unit 46.Driver element 44 is provided to by a driven unit 46 powerful process tool rotatably.Here by gear mechanism housing 54, extend a main shaft 62(Fig. 2), on this main shaft, can fix one for the process tool 64 of processing work (not shown) here.Process tool 64 is configured grinding disc.But also can imagine, this process tool 64 is configured dividing disc or polishing disk.Driven unit 46 is connected with driver element 44 with the known methods of professional by the driver part (not shown here) of a rotary actuation of driver element 44.This external gear mechanism housing 54 is provided with an additional handgrip 66.The principal spread direction 56 of this additional handgrip relative angle grinding machine 42 vertically extends.
Fig. 2 has represented partly to remove the angle grinding machine 42 of the motor field frame 60 of toolroom machine housing 50.Here a housing parts region of carrying the motor field frame 60 of gear mechanism housing 54 is removed.Carrying this housing parts region of the motor field frame 60 of gear mechanism housing 54 puts and surrounds the electronic building brick 68 of angle of entry grinding machine 42 and a mechanical braking unit 12 of toolroom machine brake apparatus 10 in installment state.Electronic building brick 68 is configured pre-assembled assembly.Here this electronic building brick 68 comprises the electronic component (not shown) for controlling and/or regulate driver element 44 here, and one for closed and/or for disconnecting to mechanical, switch electricity or electronics of the current loop of the supply energy of driver element 44 and for connecting the energy, as the feed cable 76 of a local power network.Also can to feed cable 76 in conversion this electronic building brick 68 there is a battery interface, this battery interface can be connected with a battery (not shown here) of angle grinding machine 42.Electronic building brick 68 has an electronic building brick housing 70, fixing each member of electronic building brick in this housing and/or on this housing.Here this electronic building brick housing 70 surrounds at least in part the element of electronic building brick 68 in assembled state.Electronic building brick 68 is fixed in the subregional side of carrying gear mechanism housing 54 of the housing section of motor field frame 60 by screw coupling part, and motor field frame is fixed on gear mechanism housing 54.But also can consider, by professional think significant another interconnection technique, for example by shape, sealed connection is fixed on electronic building brick 68 on this housing parts region.Toolroom machine brake apparatus 10, in the assembled state of electronic building brick 68, sees 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.
Toolroom machine brake apparatus 10 comprises mechanical braking unit 12, and this brake unit has the braking member 14 of rotatably support.Here the brake unit 12 of toolroom machine brake apparatus 10 is arranged in a side of carrying driven unit 48 of driver element 44.Braking member 14 is configured brake disc, and it without relative rotation, force closure is fixed on an armature shaft 72 of the driver element 44 that forms motor unit by interference fit.But also can consider, braking member 14 thinks that by professional significant another kind of connection, the connection sealed and/or that material is sealed of for example shape are fixed on armature shaft 72 without relative rotation.Braking member 14 is arranged in a side of carrying driven unit 46 of armature shaft 72.In a side of carrying driven unit 46 of this external armature shaft 72, on armature shaft 72, fixed without relative rotation a speedometer wheel 74(Fig. 3).This speedometer wheel 74 is provided to detect the rotary speed property parameter of armature shaft 72 and is sent to for controlling and/or regulate electronic component driver element 44, that be located at electronic building brick 68.Toolroom machine brake apparatus 10 also comprises that one for starting and/or the operating unit 16 of releasing brake unit 12, the executive component 18 that this operating unit has a motion and supports.Executive component 18 is provided to: a corresponding braking member 20 that at least makes brake unit 12 in a duty at least substantially with rotation 22 vertical ground motions of braking member 14.
When executive component 78 be moved and thus executive component 18 from home position, start to make the corresponding braking member 20 of brake unit 12 to move to an off-position (Fig. 3 and 4) by an application position (Fig. 5).Corresponding in the case braking member 20 at least substantially with rotation 22 vertical ground motions of braking member 14.Corresponding braking member 20 can support to deflection around a clinoid 24 that the rotation 22 of braking member 14 extends abreast relatively at least substantially.Brake unit 12 also has another corresponding braking member 30(Fig. 3 and 4).This other corresponding braking member 30 rotation 22 vertical ground motions of braking member 14 relatively at least substantially too when 18 operation of executive component 78 and executive component.This other corresponding braking member 30 can support to deflection around a clinoid 32 that the rotation 22 of braking member 14 extends abreast relatively at least substantially in the case.When corresponding braking member 20 and other corresponding braking member 30 are started to move to off-position by application position, corresponding braking member 20 and other corresponding braking member 30 are along a direction deflection that deviates from braking member 14.Sealed being eliminated of friction between braking member 14 and corresponding braking member 20,30 in the case.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.Brake lever 84,86 each holding members (not shown here) by angle grinding machine 42 are maintained on supporting bolt 92,94 in the axial direction.Here holding member can be configured back-up ring, screw, and backstop and/or professional think significant other parts.
In order to make corresponding braking member 20 and other corresponding braking member 30 motor performance elements 18 have a cam drive region 38, this cam drive region is provided to make the motion of executive component 18 to convert the motion of corresponding braking member 20 and other corresponding braking member 30 to.Here cam drive region 38 has a sloping platform 96 in the side towards corresponding braking member 20.In addition cam drive region has another sloping platform 98 in a side of the corresponding braking member 30 towards other.Here sloping platform 96 and another sloping platform 98 are provided to make the translational motion of executive component 18 to convert the yaw motion of corresponding braking member 20 and other corresponding braking member 30 to.Corresponding braking member 20 and other corresponding braking member 30 start to deflect into the off-position of leaving braking member 14 from application position thus.Therefore braking member 14 is cancelled with the contact between corresponding braking member 20,30.
Corresponding braking member 20 and other corresponding braking member 30 respectively have parts 100,102 that reduce friction at one on the end in cam drive region 38.Here these parts 100,102 that reduce 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 can consider: the parts 100,102 that reduce friction have professional and think significant another configuration, for example for make 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 a brake(-holder) block 104,106(Fig. 3,4 and 5).The brake(-holder) block 104 of corresponding braking member 20 be arranged on corresponding braking member 20 in a side of braking member 14.The brake(-holder) block 106 of corresponding braking member 30 be in addition arranged on other corresponding braking member 30 in a side of braking member 14.Here in the application position of corresponding braking member 20 and other corresponding braking member 30 brake(-holder) block 104,106 to produce braking members 14 sealed with the friction between corresponding braking member 20,30.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 of at least substantially perpendicularly extending along a rotation 22 that extends in a relative braking member 14 extends.
For 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 to, in the direction towards braking member 14, corresponding braking member 20 is loaded to a spring force.In addition this spring element 28 is provided to, in the direction towards braking member 14, other corresponding braking member 30 is loaded to a spring force.Spring element 28 is fixed on of corresponding braking member 20 on the end 34 of executive component 18 and is fixed on of other corresponding braking member 30 on the end 36 of executive component 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 loading spring power mutually.But also can consider, brake unit 12 has more than one spring element 28, they are provided to direction towards braking member 14 to corresponding braking member 20 and other corresponding braking member 30 loading spring power.Brake unit 12 for example has two compression springs in the case, they each with one end, be supported on the inwall of motor field frame 60 and be supported on corresponding braking member 20 or other corresponding braking member 30 with the other end.This external braking member 14 forms in the situation of brake drum, wherein brake lever 84,86 are surrounded by the braking member 14 that forms brake drum at least in part, can consider: spring element 28 is configured compression spring, it in the direction of the inner peripheral surface towards braking member 14 to brake lever 84,86 loading spring power.
When devoting oneself to work, angle grinding machine 42 by the direction operation executive component 78 towards gear mechanism housing 54, executive component 18 is moved.By the operation flange 80 of executive component 18, operate thus mechanical, switch electricity or electronics of electronic building brick 68.In addition make cam drive region 38 motion between corresponding braking member 20 and other corresponding braking member 30.Sloping platform 96 and another sloping platform 98 are at the parts 100 that reduce friction of corresponding braking member 20,30 in the case.On 102, move.By the gradient of sloping platform 96 and the acting in conjunction of the gradient of sloping platform 98 make corresponding braking member 20,30 each in the direction of rotation 22 that deviates from braking member 14 around clinoid 24,32 deflections of corresponding braking member 20,30.Sealed being released of friction between the brake(-holder) block 104,106 of braking member 14 and corresponding braking member 20,30.Therefore corresponding braking member 20 and corresponding braking member 30 are in off-position.Therefore thereon without relative rotation fixedly the armature shaft 72 of braking member 14 because an operation mechanical, switch electricity or electronics by by electronic building brick 68 makes the energising of current loop closure drop into rotation.
When 42 shutdown of angle grinding machine, will executive component 78 be moved towards the direction that deviates from gear mechanism housing 54.This of executive component 78 moves the support of the back-moving spring element 82 that is subject to operating unit 16 in the case.By the acting in conjunction of the spring force of the gradient of sloping platform 96, the gradient of another sloping platform 98 and spring element 28 by make corresponding braking member 20 and other corresponding braking member 30 in the direction of the rotation 22 towards braking member 14 around clinoid 24,32 deflections.Making thus the brake(-holder) block 104,106 of corresponding braking member 20,30 and the periphery of braking member 14 form contacts.Therefore complete and armature shaft 72 is braked during in the postboost inertia rotation of angle grinding machine 42 braking member 14 and friction between corresponding braking member 20,30 are sealed.
Claims (10)
1. toolroom machine brake apparatus, especially hand-held tool machine braking device, be provided with the mechanical braking unit (12) of at least one braking member with at least one rotatably support (14), and be provided with at least one have at least one executive component supporting movingly (18) for starting and/or the operating unit (16) of releasing brake unit (12), it is characterized in that: executive component (18) is provided to: at least in a duty, make the rotation (22) of the relative braking member (14) of a corresponding braking member (20) of brake unit (12) at least substantially perpendicularly move.
2. according to the toolroom machine brake apparatus of claim 1, it is characterized in that: corresponding braking member (20) around the rotation (22) of a relative braking member (14) at least substantially parallel the clinoid (24) that extends can the supporting of deflection ground.
3. according to the toolroom machine brake apparatus of any one of the preceding claims, it is characterized in that: executive component (18) axis of movement (26) that the rotation (22) with braking member (14) extends at least substantially parallelly along can the supporting of translation ground.
4. according to the toolroom machine brake apparatus of any one of the preceding claims, it is characterized in that: brake unit (12) has a spring element (28), this spring element is provided at least corresponding braking member (20) be loaded to a spring force in the direction towards braking member (14).
5. according to the toolroom machine brake apparatus of any one of the preceding claims, it is characterized in that: brake unit (12) has at least one other corresponding braking member (30).
6. according to the toolroom machine brake apparatus of claim 5, it is characterized in that: this other corresponding braking member (30) around the rotation (22) of another relative braking member (14) at least substantially parallel the clinoid (32) that extends can the supporting of deflection ground.
7. at least according to the toolroom machine brake apparatus of claim 4 or 5, it is characterized in that: spring element (28) is fixed on the end towards executive component (18) (34) of corresponding braking member (20) and goes up and be fixed on the end towards executive component (18) (36) of described other corresponding braking member (30).
8. at least according to the toolroom machine brake apparatus of claim 5, it is characterized in that: executive component (18) has at least one cam drive region (38), this cam drive region is provided to make the motion of executive component (18) at least to convert the motion of corresponding braking member (20) to.
9. hand tool, angle grinding machine especially, have at least one according to the toolroom machine brake apparatus of any one of the preceding claims.
10. according to the hand tool of 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 of toolroom machine brake apparatus (12) is arranged in a side of carrying driven unit (46) of driver element (44).
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 true CN103561906A (en) | 2014-02-05 |
| CN103561906B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020131555A1 (en) * | 2018-12-17 | 2020-06-25 | Milwaukee Electric Tool Corporation | Angle grinder |
Families Citing this family (3)
| 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 |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 CN CN201280024933.3A patent/CN103561906B/en not_active Expired - Fee Related
- 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
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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020131555A1 (en) * | 2018-12-17 | 2020-06-25 | Milwaukee Electric Tool Corporation | Angle grinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103561906B (en) | 2016-07-27 |
| RU2013157029A (en) | 2015-06-27 |
| DE102011076345A1 (en) | 2012-11-29 |
| WO2012159801A1 (en) | 2012-11-29 |
| RU2628270C2 (en) | 2017-08-15 |
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