EP4058248A1 - Dispositif de type poignée pour une machine-outil - Google Patents

Dispositif de type poignée pour une machine-outil

Info

Publication number
EP4058248A1
EP4058248A1 EP20797795.0A EP20797795A EP4058248A1 EP 4058248 A1 EP4058248 A1 EP 4058248A1 EP 20797795 A EP20797795 A EP 20797795A EP 4058248 A1 EP4058248 A1 EP 4058248A1
Authority
EP
European Patent Office
Prior art keywords
machine tool
drive
housing
lever element
handle device
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.)
Pending
Application number
EP20797795.0A
Other languages
German (de)
English (en)
Inventor
Stefan Ringler
Steffen Geiger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP4058248A1 publication Critical patent/EP4058248A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/195—Regulation means
    • B25D2250/201—Regulation means for speed, e.g. drilling or percussion speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/221—Sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/255—Switches
    • B25D2250/265—Trigger mechanism in handle
    • 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
    • H01H2009/068—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 with switches mounted on a handlebar, e.g. for motorcycles, fork lift trucks, etc.
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/9517—Proximity switches using a magnetic detector using galvanomagnetic devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K2017/9713—Multiposition, e.g. involving comparison with different thresholds

Definitions

  • the present invention relates to a handle device on a machine tool, in particular a chisel hammer, with a drive, a control device, a transmission device, the handle device containing a lever element which can be pivoted relative to a housing of the machine tool.
  • a prior art chipping hammer is used for working (i.e. tearing, breaking or chiseling) mineral materials such as concrete, brick or the like.
  • the chipping hammer can also be referred to as a demolition, demolition or breaker hammer.
  • the chisel hammer has a drive that uses a transmission mechanism to transmit blows to a chisel tool (also called a chisel).
  • the drive can be an electric motor or an internal combustion engine.
  • the chipping hammer has two handles positioned on opposite sides of the housing of the chipping hammer. At least one of the two handles includes an activation switch with which the chipping hammer can be activated or switched on.
  • the handles usually extend at an obtuse angle to a longitudinal axis of the housing of the chipping hammer.
  • the activation switch is pressed and the chipping hammer is activated so that blows are transmitted from the drive to the chisel.
  • a problem with a chipping hammer according to the prior art is that once the chipping hammer is activated (i.e. switched on), the drive is usually operated at maximum speed and consequently the chipping hammer is operated at full power. If a user does not control the chipping hammer sufficiently at this point, i.e. the user has not yet positioned both hands on the respective handles and holds the chisel hammer, the chipping hammer is inadequately guided and adequate and safe work is not possible.
  • a handle device on a machine tool in particular a chisel hammer, with a drive, a control device, a transmission device, the handle device containing a lever element which can be pivoted relative to a housing of the machine tool.
  • the lever element is reversibly movable in one direction relative to the housing of the machine tool by exerting a force and a sensor device is included for detecting at least a first or second position of the lever element relative to the housing of the machine tool, a first speed for the drive is set when the first position of the lever element is detected relative to the housing of the machine tool and a second speed is set for the drive when the second position of the lever element is detected relative to the housing of the machine tool.
  • the second speed value is higher than the first speed value.
  • the drive can be designed as an electric motor.
  • the transmission device can be designed as a striking mechanism. With the aid of a high speed value, a combination of the drive configured as an electric motor with the transmission device configured as a hammer mechanism can generate a high impact energy on a tool configured as a chisel.
  • the lever element contains a signal transmitter with at least one magnet and the sensor device contains at least one first and second Hall sensor for detecting the at least one magnet, the signal transmitter being reversibly movable relative to the sensor device is.
  • a switch-on device may be operated separately to be included on the machine tool. At least the drive of the machine tool can be activated by the switch-on device. The activation of the transmission device does not take place with the aid of the switch-on device.
  • FIG. 1 shows a schematic front view of a machine tool according to the invention in the form of a chipping hammer with a handle device according to the invention
  • FIG. 2a shows a detailed view of the fland grip device in a first position according to a first exemplary embodiment
  • FIG. 2b shows a detailed view of the fland grip device in a second position according to the first exemplary embodiment
  • FIG. 2c shows a detailed view of the fland grip device in a third position according to the first exemplary embodiment
  • FIG. 3a shows a detailed view of the handle device in a first position according to a second exemplary embodiment
  • FIG. 3b shows a detailed view of the handle device in a second position according to the second exemplary embodiment
  • FIG. 3c shows a detailed view of the flange handle device in a third position according to the second exemplary embodiment.
  • Figure 1 shows a machine tool 1 according to the invention in the form of a chipping hammer.
  • the machine tool 1 can, however, also be designed in the form of a hammer drill, a drill, a saw, a grinding device or the like.
  • the machine tool 1 configured as a chipping hammer essentially contains a housing 2, a drive 3, a control device 4, a first and second handle device 5, a transmission device 6, an energy supply device 7 and a tool holder 8.
  • the drive 3, the control device 4 and the transmission device 6 are essentially positioned in the interior of the housing.
  • the drive 3 is designed as an electric motor.
  • the electric motor can be a brushless electric motor.
  • the tool holder 8 is positioned at a lower end of the housing 2 of the machine tool 1. With the aid of the tool holder 8, a tool 9 can be picked up and held.
  • the tool 9 is designed as a chisel.
  • the power supply device 7 is provided on the first side wall 2a of the housing 2 of the machine tool 1.
  • the energy supply device 7 is a power supply connection and a power supply cable.
  • a free end of the power cord can be connected to a power connection (also called a socket).
  • the machine tool 1 and in particular the drive 3 configured as an electric motor can be supplied with energy, for example with electrical energy.
  • the energy supply device 7 can also be designed as a single accumulator or as several accumulators: With the aid of one or more accumulator interfaces, the single or several accumulators are positioned on or in the housing 2 of the machine tool 1.
  • the drive 3 in the present embodiment of the machine tool 1 is designed as an electric motor.
  • the drive 3 can also be an internal combustion engine.
  • the energy supply device 7 is designed as a fuel tank.
  • the drive 3 can also be configured in the form of a pneumatic drive or compressor.
  • the energy supply device 7 can be a compressed air connection or compressed air supply on or in the machine tool 1.
  • the drive 3 designed as an electric motor is used to generate a torque.
  • the torque generated by the drive 3 can be transmitted in the form of (hammer) blows to the tool holder 8 and finally to the tool 9 designed as a chisel.
  • the transmission device 6 can also be referred to as a striking mechanism. The higher the frequency of the impacts, the more impact energy is generated.
  • the control device 4 is connected to the first and second fland grip device 5 and to the drive 3. Signals and communication data can thus be sent and received between the handle devices 5, the drive 3 and the control device 4.
  • the control device 4 is used to control and regulate the various functions of the machine tool 1 and in particular to set the parameters or operating parameters of the drive 3. With the help of the control device 4, the speed of the drive 3, designed as an electric motor, can be set as a parameter or operating parameter .
  • the first handle device 5 is movably positioned on a first side wall 2 a of the housing 2 and the second handle device 5 is movably positioned on a second side wall 2 b of the housing 2.
  • both the first and the second handle device 5 each contain a lever element 10 and a handle 11.
  • the respective lever element 10 of the first and second handle device 5 can be pivoted in the direction of rotation C or D via a corresponding first pivot point D1 stored.
  • the first and second handle device 5 is used to hold and guide the machine tool 1 by a user. The user is not shown in the figures.
  • the handle device 5 according to the invention is shown in the form of a first embodiment.
  • the handle device 5 according to the first exemplary embodiment essentially contains a lever element 10, a handle piece 11, an activation element 12, a sensor device 13 and a signal transmitter 14.
  • the activation element 12 designed as an actuation switch is used to activate the drive 3 of the machine tool 1.
  • the activation element 12 can be activated by exerting a Force in direction S is reversibly brought from a first position to a second position.
  • the activation element 12 is shown in the first position, ie in a non-pressed state.
  • the first position corresponds to the top position.
  • the drive 3 is activated as soon as the activation element 12 is moved away from the first position into the second position.
  • FIGS. 2b and 2c the activation element 12 is shown in the second position, ie in a pressed state.
  • the activation element 12 is connected to the control device 4 in such a way that signals can be exchanged between the activation element 12 and the control device 4.
  • the connection between the activation element 12 and the control device 4 is not shown in the figures.
  • the respective position, ie the first or second position, of the activation element 12 is transmitted to the control device 4 with the aid of a corresponding signal.
  • the transmission device 6 configured as a hammer mechanism is not only activated or started by pressing the activation element 12 in the direction of the arrow S.
  • the sensor device 13 is connected to the control device 4 in such a way that signals, data and information can be exchanged between the sensor device 13 and the control device 4.
  • the lever element 10 is designed essentially as an elongated lever arm with a first end 10a and a second end 10b and with an upper and lower side 10c, 10d.
  • the lever element 10 is mounted with the first end 10a via a first pivot point D1 in a direction of rotation C or D so that it can be reversibly pivoted to the housing 2 of the machine tool 1.
  • a force in direction A is exerted on the upper side 10c of the lever element 10
  • the lever element 10 pivots about the pivot point D1 in the direction of rotation C.
  • the lever element 10 pivots about the first pivot point D1 back into the starting position in the direction of rotation D with the aid of a first spring element 15.
  • the first spring element 15 can be designed in the form of a spiral spring or torsion bar spring.
  • the signal transmitter 14 is firmly connected to the lever element 10 and is designed in the form of a magnet.
  • the magnet can be a permanent magnet.
  • the signal transmitter 14 designed as a magnet is positioned on the lever element 10. By positioning it on the lever element 10, the signal transmitter 14 can be moved relative to the housing 2 of the machine tool 1.
  • the sensor device 13 is positioned on the first side wall 2a of the housing 2 of the machine tool 1 and essentially contains a first, second and third Hall sensor 16a, 16b, 16c. As shown in FIGS. 2a to 2c, the three Hall sensors 16a, 16b, 16c are positioned one below the other in direction A on the housing 2 of the machine tool 1.
  • the Hall sensors 16a, 16b, 16c are positioned on the housing 2 of the machine tool 1 in such a way that at least one of the three Hall sensors 16a, 16b, 16c can always detect the position of the signal transmitter 14 designed as a magnet when the lever element 10 is in Direction of rotation C or D is swiveled.
  • more or fewer than three Hall sensors can also be provided.
  • the activation element 12 is not pressed in direction A and the handle device 5 is not pivoted in direction C by exerting a force.
  • the first (ie uppermost) Hall sensor 16a of the sensor device 13 detects the proximity of the signal transmitter 14 designed as a magnet.
  • the sensor device 13 sends a corresponding signal to the control device 4 to inform the control device 4 that no force is being exerted on the handle device 5 .
  • neither the drive 3 nor the transmission device 6 is activated.
  • no impact energy is transmitted to the tool 9.
  • a tool change could be carried out safely in this state.
  • a first force in direction A is exerted on the activation element 12 and the handle device 5.
  • the activation element 12 is brought from the first position into the second position.
  • Drive 3 is then activated.
  • the handle device 5 and thus the lever element 10 are pivoted about the first pivot point D1 in the direction of rotation C.
  • so much force is exerted on the handle device 5 and the lever element 10 that the handle device 5 is in a central position.
  • the signal transmitter 14 designed as a magnet is positioned in such a way that the second (middle) Hall sensor 16b of the sensor device 13 can detect the magnet. The sensor device 13 thus detects that the handle device 5 is in a central position.
  • a corresponding signal is sent to the control device 4 Posted.
  • the signal informs the control device 4 that a medium force is being exerted on the handle device 5 by the user.
  • the control device 4 controls the drive 3 designed as an electric motor in such a way that a first speed for the drive 3 is set as a function of the average force exerted on the handle device 5.
  • the first speed of rotation gives a first value of impact energy from the transmission device 6 to the tool 9.
  • a second force in direction A is exerted on the handle device 5.
  • the second force is greater than the first force.
  • the activation element 12 is still in the second (i.e. pressed) position.
  • the drive 3 is still activated by pressing the activation element 12 in the S direction.
  • the lever element 10 is pivoted further in the direction of rotation C than in FIG. 2b.
  • the lever element 10 is pivoted so far that the signal transmitter 14 positioned on the lever element 10 is at the level of the third (i.e. deepest) Hall sensor 16c.
  • the sensor device 13 thus detects that maximum pressure is being exerted on the handle device 5 and that the handle device 5 is in a lower (i.e. deepest) position.
  • a corresponding signal is sent to the control device 4.
  • the signal informs the control device 4 that a maximum force is being exerted on the handle device 5 by the user.
  • the control device 4 controls the drive 3 designed as an electric motor in such a way that a second speed for the drive 3 is set as a function of the maximum force exerted on the handle device 5.
  • the second speed value is higher than the first speed value.
  • a second value of impact energy is given from the transmission device 6 to the tool 9; the second value of impact energy is higher than the first value of impact energy.
  • the handle device 5 according to the invention is shown in the form of a second embodiment.
  • the handle device 5 according to the second exemplary embodiment essentially contains a lever element 10, a handle piece 11, an activation element 12, a sensor device 13 and a signal transmitter 14.
  • the activation element 12 and the signal transmitter 14 are positioned on a connecting element 17.
  • the connecting element 17 is designed essentially in an elongated shape and has a first and a second end 17a, 17b.
  • the activation element 12 is positioned at the first end 17a and the signal transmitter 14 is positioned at the second end 17b of the connecting element 17.
  • a pivot bearing is provided at the first end 17a of the connecting element 17, so that the connecting element 17 can be pivoted about a second pivot point D2 in the direction of rotation E or F. By exerting a force in direction A on the activation element 12, the connection element 17 is pivoted or rotated about the pivot point D2 in the direction of rotation E.
  • the signal transmitter 14 positioned at the second end moves in the direction A.
  • the signal transmitter 14, which is designed as a magnet, is thus guided past the three Hall sensors 16a, 16b, 16c of the sensor device 13 .
  • the sensor device 13 detects the positioning of the signal transmitter 14 designed as a magnet.
  • the angle of the handle device 5 and the force with which the handle device 5 is pressed in direction A can be determined via the positioning of the signal transmitter 14 relative to the sensor device 13 .
  • the speed of the drive 3 and thus the output of the impact energy from the transmission device 6 to the tool 9 is dependent on the position of the signal transmitter 14 or the position of the lever element 10 to the sensor device 13 or to the housing 2 of the Machine tool 1 set.
  • the activation element 12 moves in direction B back into the starting position with the aid of a second spring element.
  • the connecting element 17 is pivoted again in the direction of rotation F about the pivot point D2 with the aid of the second spring element.
  • the second spring element is not shown in the figures.
  • more or fewer than three Hall sensors can also be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

L'invention concerne un dispositif de type poignée (5) sur une machine-outil (1), en particulier un marteau perforateur, comprenant un entraînement (3), un dispositif de commande (4) et un dispositif de transmission (6), ledit dispositif de type poignée contenant un élément levier qui peut pivoter par rapport à un boîtier (2) de la machine-outil. L'élément levier peut être déplacé de manière réversible par rapport au boîtier de la machine-outil en exerçant une force dans une direction (A), et un dispositif de type capteur (13) est inclus pour détecter au moins une première ou une seconde position de l'élément levier par rapport au boîtier de la machine-outil, une première vitesse de rotation étant réglée pour l'entraînement si la première position de l'élément levier par rapport au boîtier de la machine-outil est détectée et une seconde vitesse de rotation étant réglée pour l'entraînement si la seconde position de l'élément levier par rapport au boîtier de la machine-outil est détectée.
EP20797795.0A 2019-11-14 2020-11-04 Dispositif de type poignée pour une machine-outil Pending EP4058248A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19209161.9A EP3822035A1 (fr) 2019-11-14 2019-11-14 Dispositif de poignée pour une machine-outil
PCT/EP2020/080899 WO2021094155A1 (fr) 2019-11-14 2020-11-04 Dispositif de type poignée pour une machine-outil

Publications (1)

Publication Number Publication Date
EP4058248A1 true EP4058248A1 (fr) 2022-09-21

Family

ID=68581598

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19209161.9A Withdrawn EP3822035A1 (fr) 2019-11-14 2019-11-14 Dispositif de poignée pour une machine-outil
EP20797795.0A Pending EP4058248A1 (fr) 2019-11-14 2020-11-04 Dispositif de type poignée pour une machine-outil

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19209161.9A Withdrawn EP3822035A1 (fr) 2019-11-14 2019-11-14 Dispositif de poignée pour une machine-outil

Country Status (4)

Country Link
US (1) US20240100673A1 (fr)
EP (2) EP3822035A1 (fr)
CN (1) CN114502329A (fr)
WO (1) WO2021094155A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3822034A1 (fr) * 2019-11-14 2021-05-19 Hilti Aktiengesellschaft Procédé de commande et de réglage d'une machine-outil

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9827947D0 (en) * 1998-12-18 1999-02-10 Black & Decker Inc Power tool
EP1759813A3 (fr) * 2002-01-10 2008-04-23 Black & Decker, Inc. Meuleuse d'angle
DE102004058579A1 (de) * 2004-12-03 2006-06-08 Robert Bosch Gmbh Handwerkzeugmaschine
DE102006029630A1 (de) * 2006-06-28 2008-01-03 Robert Bosch Gmbh Handwerkzeugmaschine
DE102006040647A1 (de) * 2006-08-30 2008-03-13 Robert Bosch Gmbh Handwerkzeugmaschine
CN101637906A (zh) * 2008-07-31 2010-02-03 苏州宝时得电动工具有限公司 变速工具
DE102007046603A1 (de) * 2007-09-28 2009-04-02 Wacker Construction Equipment Ag Arbeitsgerät mit Drehzahlabsenkung und Arbeitsverfahren dafür
DE102007000454A1 (de) * 2007-11-09 2009-05-14 Hilti Aktiengesellschaft Schlagende Handwerkzeugmaschine mit kontaktlosen Handschalter im Seitenhandgriff
CN101577520A (zh) * 2009-06-24 2009-11-11 文星毅 用于便携式直流电动工具的操作系统
CN102069481B (zh) * 2009-11-19 2012-08-22 南京德朔实业有限公司 一种动力榔头
EP2691213B2 (fr) * 2011-03-31 2019-12-04 Ingersoll-Rand Company Commutateur de marche avant-arrière pour outils électriques
DE102011080374A1 (de) * 2011-08-03 2013-02-07 Robert Bosch Gmbh Werkzeugmaschine
CN211029866U (zh) * 2016-09-28 2020-07-17 米沃奇电动工具公司 触发器组件及电动工具

Also Published As

Publication number Publication date
WO2021094155A1 (fr) 2021-05-20
CN114502329A (zh) 2022-05-13
US20240100673A1 (en) 2024-03-28
EP3822035A1 (fr) 2021-05-19

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