EP3383585A1 - Hand-held power tool having at least one machine-side contact element - Google Patents
Hand-held power tool having at least one machine-side contact elementInfo
- Publication number
- EP3383585A1 EP3383585A1 EP16788712.4A EP16788712A EP3383585A1 EP 3383585 A1 EP3383585 A1 EP 3383585A1 EP 16788712 A EP16788712 A EP 16788712A EP 3383585 A1 EP3383585 A1 EP 3383585A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hand tool
- accessory
- blocking element
- side contact
- power tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 claims description 41
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 description 13
- 239000012634 fragment Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- B24B23/028—Angle tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
- B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
- B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
- H01H3/58—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
Definitions
- the invention relates to a hand tool with at least one machine-side contact element.
- the hand tool of the invention with the features of the independent claim is designed in particular as an angle grinder.
- this includes monitoring whether safety-relevant accessories such as a protective cover or an additional handle are mounted.
- the hand tool according to the invention has at least one
- At least one accessory-side contact element At least one accessory-side contact element. It is proposed that the machine-side contact element and the accessory-side contact element are releasably connectable to each other. Thus, it can be advantageously ensured that the safety-relevant accessories can be mounted on or on the handheld power tool.
- the features specified in the dependent claims are advantageous developments of the fastening unit according to the invention after
- the accessory is designed as an additional handle.
- the auxiliary handle is advantageously provided to be encompassed in particular by an operator of the power tool.
- Hand tool can be increased by the
- Hand tool is operated with two hands.
- the accessory is designed as a protective hood.
- the guard is advantageously provided to an operator of the power tool in the operation of the power tool before sparks and / or material particles that in the operation of
- a blocking element is arranged in the gear housing part, which is intended to block a mechanical element when not mounted accessories, so that the power tool can not be turned on.
- the mechanical element is designed as a switching element.
- the switching element is arranged in the motor housing part. If the blocking element has a stop, the slide switch moves against the stop of the blocking element when accessories are not mounted. Thus, it is advantageously ensured that the power tool when not mounted
- the mechanical element is designed as a mechanical shaft, in particular as a motor shaft.
- the mechanical element is designed as an output shaft, in particular as a spindle.
- the blocking element has a rotary joint.
- the blocking element when the accessory is mounted, the blocking element is acted upon by a force and moved about an axis of rotation of the rotary joint.
- the blocking element advantageously by rotating the blocking element about the axis of rotation of the
- FIG. 1 shows an arrangement of a hand tool according to the invention and a contact element in a schematic representation
- Figure 2 shows a first section of a traction tractor and a first
- FIG. 3 shows two embodiment of an accessory of the invention
- FIG. 4 shows a second embodiment of the invention
- Figure 5 shows a third embodiment of the invention
- FIG. 6 shows a hand tool according to the invention with two more
- FIG. 1 shows a handheld power tool 10.
- the handheld power tool is an angle grinder, which is usually a
- Gear housing part 12 which houses a bevel gear. From the angle gear projects a work spindle 14 on which a grinding and / or
- the angle grinder has a
- Motor housing part 18 for receiving an electric motor drive unit 20.
- Machine side means that
- Contact element 24 is arranged in the power tool 10. in the
- the machine-side contact element 24 is a thread.
- the thread 24 is arranged in the transmission housing 12. But it is also conceivable that the machine side
- Contact element 24 is arranged in the motor housing part 18. It is also conceivable that more than one machine-side contact element 24 in the
- Hand tool 10 are arranged.
- An accessory 26 is intended to be connected to the power tool 10.
- the accessory 26 has an accessory-side contact element 28. On the accessory side, the contact element 28 is arranged in the accessory 26 for the handheld power tool 10.
- the accessory 26 is an additional handle 26a for
- the auxiliary handle 26a has as an accessory-side contact element 28 a threaded pin 29, which is screwed into the thread 24 of the gear housing part 12.
- Embodiment is the machine-side contact element 24 and the accessory-side contact element 28 releasably connectable to each other.
- the accessory 26 for the hand tool 10 is, as shown in Figure 3, designed as an additional handle 26a or as a protective hood 26b.
- Additional handle 26a is intended to be operated by an operator
- Traction machine 10 must be operated with two hands.
- the task of the protective hood 26b is to provide an operator of
- a blocking element 30, as can be seen in FIG. 1, is arranged in the gearbox housing part 12.
- a mechanical element 32 is adjacent to the blocking element
- the mechanical element 32 is intended to ensure the operation of the power tool 10.
- the blocking element 30 is intended to block the mechanical element 32 when the accessory 26 is not mounted, so that the handheld power tool 10 can not be put into operation.
- the mechanical element 32 is in the embodiment in Figure 1 a
- Switching element 32 Figure 2 shows a detailed view.
- the switching element 32 is provided, upon actuation of a switch 34, the electromotive
- the switching element 32 is in
- Embodiment of Figure 2 designed as a slide switch. Not at mounted accessory 26, for example, when not mounted auxiliary handle 26a, the slide switch 32 can not be moved upon actuation of the switch 34 to turn on the electric motor drive unit 20, so that the power tool 10 can not be turned on.
- the blocking element 30 is in the embodiment of Figure 1 as a
- Tilting element with swivel 40 is executed.
- the blocking element 30 has a stop 42.
- the slide switch 32 can not be moved further in the direction of the transmission housing 12, since it moves against the stop 42 of the blocking element 30. If the auxiliary handle 26a is mounted, the blocking element 30 is acted upon by a force F. The blocking element 30 rotates about an axis of rotation 50 of the rotary joint 40. By rotating the blocking element 30 about the axis of rotation 50 of the rotary joint 40, the stop 42 of the blocking element 30 rotates in a direction R and is for the
- Slide valve 32 no longer an obstacle. In the case of the mounted auxiliary handle 26a, the slide switch 32 can therefore be moved in the direction of the transmission housing 12 and turn on the power tool 10.
- a restoring force ensures that the blocking element 30 returns to its original position upon disassembly of the auxiliary handle 26a.
- Restoring force can be generated in that the blocking element 30 is elastically deformable. But it is also conceivable that an additional element, not shown, for example, a return spring is integrated.
- FIG. 1 shows two variants in which the assembly of the
- the protective hood 26b is queried.
- the protective hood 26b has a protective collar 60. Will the
- the blocking element 30 is actuated, which rotates about its axis of rotation 50 of the rotary joint 40.
- the stop 42 of the blocking element 30 rotates in a direction R and is for the Slide valve 32 no longer an obstacle.
- the slide switch 32 can therefore be moved in the direction of the transmission housing 12 and turn on the power tool 10.
- FIG. 4 shows a further embodiment of a handheld power tool 10 with a blocking element 30 and a mechanical element 32.
- the mechanical element 32 is in the embodiment in Figure 4 a
- the motor shaft 32 is intended to forward a rotational movement via a transmission to an output shaft.
- not mounted accessories 26 for example, when not mounted guard 26b is the
- Motor shaft 32 is blocked, so that the power tool 10 can not go into operation. It is between a toothed sleeve 62 and the
- Blocking element 30 formed a positive connection.
- the blocking element 30 is designed in the embodiment of Figure 4 with a swivel joint 40.
- the blocking element 30 is moved about the swivel joint 40, whereby the positive connection between the blocking element 30 and the toothed toothed sleeve 62 is released.
- a restoring force ensures that the blocking element 30 returns to its original position when the protective hood 26b is removed.
- the restoring force can be generated in that the blocking element 30 is elastically deformable. But it is also conceivable that an additional element, not shown, for example, a return spring is integrated.
- FIG. 5 shows a further embodiment of a handheld power tool 10 with a blocking element 30 and a mechanical element 32.
- the mechanical element 32 is in the embodiment in Figure 5 output shaft 32, which is designed as a spindle.
- the blocking element 30 is mounted translationally in a bearing flange 64.
- the blocking element 30 is subjected to force F and moved from the position B to the position A, as shown in FIG.
- a restoring force ensures that the blocking element 30 returns to its original position when the protective hood 26b is removed.
- the restoring force is generated by a return spring 66.
- the brake can only be released in the assembled state of the accessory 26.
- FIG. 6 shows a handheld power tool 10, wherein the accessory 26 is designed as a bow-type handle 26d or as a suction hood 26c. Combinations of the accessories of the embodiments in the figures are also conceivable. Thus, it is conceivable that a hand tool 10 equipped with protection 26b and strap handle 26d. It is just as conceivable that a hand tool 10 is equipped with additional handle 26a and suction hood 26c.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015224006.1A DE102015224006A1 (en) | 2015-12-02 | 2015-12-02 | Hand tool with at least one machine-side contact element |
PCT/EP2016/076374 WO2017092947A1 (en) | 2015-12-02 | 2016-11-02 | Hand-held power tool having at least one machine-side contact element |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3383585A1 true EP3383585A1 (en) | 2018-10-10 |
EP3383585B1 EP3383585B1 (en) | 2023-03-29 |
Family
ID=57218910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16788712.4A Active EP3383585B1 (en) | 2015-12-02 | 2016-11-02 | Hand-held power tool having at least one machine-side contact element |
Country Status (5)
Country | Link |
---|---|
US (1) | US11260502B2 (en) |
EP (1) | EP3383585B1 (en) |
CN (1) | CN108367409B (en) |
DE (1) | DE102015224006A1 (en) |
WO (1) | WO2017092947A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019155486A (en) * | 2018-03-07 | 2019-09-19 | 株式会社マキタ | Electric tool |
JP7110025B2 (en) * | 2018-08-07 | 2022-08-01 | 株式会社マキタ | Electric tool |
GB2598736A (en) * | 2020-09-09 | 2022-03-16 | Black & Decker Inc | Side handle presence and gripping detection in a power tool |
JP2022162914A (en) | 2021-04-13 | 2022-10-25 | 株式会社マキタ | tool |
EP4101597A1 (en) | 2021-06-07 | 2022-12-14 | Black & Decker, Inc. | Power tool dual-trigger operation |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3313704C2 (en) * | 1983-04-15 | 1985-05-09 | Metabowerke GmbH & Co, 7440 Nürtingen | Hand machine tool, in particular angle grinder |
US4683682A (en) * | 1986-09-19 | 1987-08-04 | Dresser Industries, Inc. | Safety lever for portable power tool |
DE3644441A1 (en) * | 1986-12-24 | 1988-07-07 | Bosch Gmbh Robert | TENSIONING DEVICE FOR DETACHABLE FASTENING OF A TOOL, IN PARTICULAR A DISC |
DE19546328B4 (en) * | 1995-12-12 | 2007-12-13 | Robert Bosch Gmbh | Hand tool machine with a rotatable handle |
JP2977076B2 (en) * | 1996-03-01 | 1999-11-10 | リョービ株式会社 | Power tool switch mechanism |
US6386961B1 (en) | 1999-07-19 | 2002-05-14 | Thomas D. Cureton | Hand held grinder |
DE10005080C1 (en) * | 2000-02-04 | 2001-08-02 | Bosch Gmbh Robert | Hand tool has handle with handle part fixed to casing by elastic, vibration-damping element and fixing part fixed at elastic element |
TW496238U (en) * | 2000-12-26 | 2002-07-21 | Mobiletron Electronics Co Ltd | Safety structure for replacing of grinding wheel for grinder |
CN2486419Y (en) * | 2001-06-05 | 2002-04-17 | 信孚产业股份有限公司 | Automobile waxing machine capable of random mounting lateral handle |
EP1327497B1 (en) * | 2002-01-10 | 2006-05-31 | Black & Decker Inc. | Gear case |
SE525836C2 (en) * | 2003-03-31 | 2005-05-10 | Atlas Copco Tools Ab | Grinding machine with explosion protection and spindle lock |
EP1765557B1 (en) * | 2004-07-15 | 2009-04-08 | Marquardt GmbH | Electric tool, particularly battery-operated electric tool |
US7252156B2 (en) * | 2005-03-31 | 2007-08-07 | Makita Corporation | Vibration isolation handle |
US20080014844A1 (en) * | 2006-07-17 | 2008-01-17 | James Matthew Pontieri | Power tool with spindle lock |
DE102007060041A1 (en) * | 2007-12-13 | 2009-06-18 | Robert Bosch Gmbh | Auxiliary handle device |
WO2012040891A1 (en) * | 2010-09-27 | 2012-04-05 | Bosch Power Tools (China) Co., Ltd. | Power tool with interlock system |
US9855651B2 (en) * | 2011-03-21 | 2018-01-02 | Techtronic Power Tools Technology Limited | Hand held power tool with locking rotatable handle |
DE102011075196A1 (en) * | 2011-05-04 | 2012-11-08 | Robert Bosch Gmbh | Machine tool switching device |
DE102013202832A1 (en) * | 2013-02-21 | 2014-08-21 | Robert Bosch Gmbh | Hand tool and method for operating the hand tool |
DE102013215821A1 (en) | 2013-08-09 | 2015-02-12 | Robert Bosch Gmbh | Hand tool with an electric motor drive as a direct drive |
JP6814150B2 (en) * | 2015-09-25 | 2021-01-13 | 株式会社マキタ | Grinder |
-
2015
- 2015-12-02 DE DE102015224006.1A patent/DE102015224006A1/en not_active Withdrawn
-
2016
- 2016-11-02 EP EP16788712.4A patent/EP3383585B1/en active Active
- 2016-11-02 US US15/775,595 patent/US11260502B2/en active Active
- 2016-11-02 WO PCT/EP2016/076374 patent/WO2017092947A1/en active Application Filing
- 2016-11-02 CN CN201680070702.4A patent/CN108367409B/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3383585B1 (en) | 2023-03-29 |
DE102015224006A1 (en) | 2017-06-08 |
CN108367409A (en) | 2018-08-03 |
WO2017092947A1 (en) | 2017-06-08 |
CN108367409B (en) | 2021-03-19 |
US11260502B2 (en) | 2022-03-01 |
US20180326554A1 (en) | 2018-11-15 |
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