WO2021090605A1 - 手持ち式動力機器 - Google Patents

手持ち式動力機器 Download PDF

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Publication number
WO2021090605A1
WO2021090605A1 PCT/JP2020/036450 JP2020036450W WO2021090605A1 WO 2021090605 A1 WO2021090605 A1 WO 2021090605A1 JP 2020036450 W JP2020036450 W JP 2020036450W WO 2021090605 A1 WO2021090605 A1 WO 2021090605A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
battery pack
power device
motor
straightening
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.)
Ceased
Application number
PCT/JP2020/036450
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
祐樹 海老沢
小林　英樹
横田　伴義
なつ美 近藤
高史 伊藤
翔太 平塚
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.)
Koki Holdings Co Ltd
Original Assignee
Koki Holdings Co Ltd
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 Koki Holdings Co Ltd filed Critical Koki Holdings Co Ltd
Priority to EP20884736.8A priority Critical patent/EP4056286A4/en
Priority to CN202080077075.3A priority patent/CN114641599B/zh
Priority to JP2021554841A priority patent/JP7380701B2/ja
Priority to US17/774,475 priority patent/US20220389727A1/en
Publication of WO2021090605A1 publication Critical patent/WO2021090605A1/ja
Anticipated expiration legal-status Critical
Priority to JP2023186120A priority patent/JP2024008982A/ja
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
    • E04G21/08—Internal vibrators, e.g. needle vibrators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/0094—Structural association with other electrical or electronic devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/061—Means for converting reciprocating motion into rotary motion or vice versa using rotary unbalanced masses
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H02K7/145—Hand-held machine tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a handheld power device such as a concrete vibrator.
  • Patent Document 1 discloses a battery-powered concrete vibrator.
  • the concrete vibrator attaches a rechargeable battery package to the bottom of the handle housing in a detachable manner.
  • a battery cover is attached to the outside of the battery package.
  • the battery cover is rotatably supported by the front lower end of the handle housing.
  • the battery cover has a claw that catches on the collar at the rear lower end of the handle housing.
  • the concrete vibrator of Patent Document 1 has room for improvement from the viewpoint of ease of use.
  • the present invention has been made in recognition of such a situation, and an object of the present invention is to provide a hand-held power device that is easy to use.
  • One aspect of the present invention is an electrical device.
  • This electric device includes a main body portion to which the battery pack can be attached and detached, a load portion housed in the main body portion, and a cover capable of opening and closing the battery pack, and corrects the shape of the cover. It has a corrective part that can be used.
  • the straightening portion may correct the shape of the cover by coming into contact with the cover or the main body portion.
  • the cover may have an engaging portion, and the main body portion may have an engaged portion that engages with the engaging portion.
  • the engaging structure between the engaging portion and the engaged portion is a latch structure, and the direction in which the engaging force of the latch structure acts and the direction in which the straightening force of the straightening portion acts are substantially the same. It may be.
  • the straightening force may be a force acting in a direction of pressing the cover outward.
  • the straightening portion may correct the inward deformation of the cover.
  • the cover has the engaging portions on the left and right side surfaces, respectively, and the main body portion has the engaged portion that engages with the engaging portion, and the engaged portion and the engaged portion.
  • the engaging structure of the cover is a latch structure, and the engaging force of the latch structure applied when the cover is closed acts to press the left and right side surfaces of the cover inward, and corrects the straightening portion. The force may act to press the left and right side surfaces of the cover toward the outside.
  • the end of the straightening portion may be R-shaped, or the straightening portion may be an elastic body.
  • the straightening portion may come into contact with a battery pack mounted on the battery pack mounting portion or an adapter mounted on the battery pack mounting portion.
  • the cover is provided with a movable portion that can be opened and closed, and in the open state of the movable portion, an opening is formed in which a cord extending from an adapter attached to the battery pack mounting portion extends out of the cover. In the mounted state of the movable portion, an opening may be formed to extend the cord extending from the adapter mounted on the battery pack mounting portion to the outside of the cover.
  • the movable portion may be provided on a surface of the cover different from the surface straightened by the straightening portion.
  • Another aspect of the present invention is an electrical device.
  • This electric device opens and closes a main body portion having a battery pack mounting portion to which a battery pack can be attached and detached, a load portion housed in the main body portion, a battery pack mounted on the battery pack mounting portion, and the battery pack mounting portion.
  • a cover that can be covered as much as possible is provided, and the cover is provided with a movable portion that can be opened / closed or detached from the adapter attached to the battery pack mounting portion in the open state or the mounting state of the movable portion.
  • An opening is formed to extend the extending cord out of the cover.
  • the movable portion When the battery pack is mounted on the battery pack mounting portion, the movable portion may be usable in a closed state.
  • the engaging portion between the cord and the movable portion and at least one of the covers may form an inro structure.
  • the main body portion has a handle portion extending upward from the battery pack mounting portion, and in the open state of the movable portion, the upper end of the movable portion is located at the same height as or lower than the lower end of the handle portion. You may.
  • This power device includes a load unit, an operation unit operated by an operator to switch the operation of the load unit, a housing for accommodating the load unit, and a cover for covering the operation unit.
  • the cover may be configured to be openable and closable with respect to the housing by a latch mechanism that locks itself to the housing in a closed state.
  • the latch mechanism may be provided on both the left and right sides of the cover.
  • the housing may include a battery pack mounting portion to which a battery pack serving as a driving source of the load portion can be attached and detached, and the cover may be configured to cover the battery pack mounting portion.
  • the operation unit may be provided on the surface of the battery pack mounting unit that faces the battery pack with a gap.
  • a sealing member may be provided between the cover and the housing to prevent foreign matter from entering the cover.
  • the load unit is a brushless motor, and includes a stator, a rotor that can rotate inside the stator, and a coil provided on the stator, and includes a control unit that controls the rotation of the brushless motor.
  • the rotation speed of the brushless motor may be switched by operating the operation unit.
  • the control unit may perform constant speed control for maintaining the rotational speed of the brushless motor regardless of the load when the load applied to the brushless motor is within a predetermined range.
  • the power device may be a concrete vibrator having a tip tool inserted into ready-mixed concrete and vibrated by the load portion.
  • Another aspect of the present invention is a concrete vibrator, which comprises a brushless motor and a tip tool inserted into ready-mixed concrete and vibrated by the brushless motor.
  • a control unit for controlling the rotation of the brushless motor is provided, and the control unit performs constant speed control for maintaining the rotation speed of the brushless motor regardless of the load when the load applied to the brushless motor is within a predetermined range. May be good.
  • the control unit may be able to change the rotation speed of the brushless motor according to an external operation.
  • An operator may be provided with a trigger switch capable of instructing the drive and stop of the brushless motor, and the rotation speed of the brushless motor may be changed according to the operation amount of the trigger switch.
  • Another aspect of the present invention is a concrete vibrator, which is a load unit, an operation unit operated by an operator to switch the operation of the load unit, and a tip inserted into ready-mixed concrete and vibrated by the load unit. Equipped with tools.
  • the load unit is a brushless motor and includes a control unit that controls the rotation of the brushless motor.
  • the control unit rotates the brushless motor regardless of the load when the load applied to the brushless motor is within a predetermined range. Constant speed control for maintaining the speed may be performed.
  • FIG. 1 is a sectional view taken along line II-II of FIG. A partially enlarged view of FIG. Top perspective view of the electrical device 1.
  • the upper perspective view of the electric device 1 which opened the cover 17 from the state of FIG. The same side view.
  • the upper perspective view of the electric device 1 which separated the battery pack 4 from the state of FIG. The same side view.
  • FIG. 5 is a cross-sectional view taken along the line XII-XII of FIG.
  • FIG. 5 is a cross-sectional view taken along the line XIII-XIII of FIG.
  • FIGS. 10 and 11 The external view of the operation panel 20 shown in FIGS. 10 and 11.
  • FIG. 18 is a cross-sectional view taken along the line XIX-XIX.
  • FIG. 20 is a sectional view taken along line XXI-XXI.
  • FIG. 5 is a perspective view of a main part of the electric device according to the second embodiment in a state where an adapter is attached to a battery pack attachment portion 2c.
  • FIG. 5 is a perspective view of the cover 17B of the electric appliance according to the third embodiment of the present invention in a state where the movable portion 25 is separated.
  • FIG. 3 is a perspective view of a main part of the electric device according to the third embodiment in a state where an adapter is attached to a battery pack attachment portion 2c.
  • the rear view of the cover 17C of the electric appliance which concerns on Embodiment 4 of this invention in the state which the movable part 25 is separated.
  • FIG. 5 is a cross-sectional view of a main part of the electric device according to the fourth embodiment in a state where the adapter 27 is attached to the battery pack attachment portion 2c.
  • the first embodiment of the present invention will be described with reference to FIGS. 1 to 25.
  • the present embodiment relates to the electric device 1.
  • the electric device 1 is a concrete vibrator. 1 and 4 define the front-rear, up-down, and left-right directions of the electric device 1 that are orthogonal to each other.
  • the front-rear direction is the extension direction of the rotation shaft 6a of the motor 6 shown in FIG.
  • the left-right direction is defined based on the case of looking forward.
  • the outer shell of the main body of the electric device 1 is composed of the housing 2.
  • the housing 2 is, for example, a resin molded body having a left-right two-divided structure.
  • the housing 2 includes a motor accommodating portion 2a, a grip portion (handle portion) 2b, a battery pack mounting portion 2c, and a connecting portion 2d.
  • the housing 2 has a substantially D-shaped shape.
  • the grip portion 2b has a substantially L-shape and extends in the front-rear and vertical directions. The operator grips the portion of the grip portion 2b that extends in the vertical direction.
  • One end (front end) of the grip portion 2b is connected to the motor accommodating portion 2a.
  • the other end (lower end) of the grip portion 2b is connected to the battery pack mounting portion 2c.
  • One end (upper end) of the connecting portion 2d is connected to the motor accommodating portion 2a.
  • the other end (lower end) of the connecting portion 2d is connected to the battery pack mounting portion 2c.
  • the motor accommodating portion 2a accommodates the motor (electric motor) 6.
  • the grip portion 2b is provided with a trigger switch 5.
  • the trigger switch 5 allows the operator to instruct the drive and stop of the motor 6.
  • a plurality of intake ports 2e are provided on the front surface of the connecting portion 2d.
  • a plurality of exhaust ports 2f are provided on the lower surface of the motor accommodating portion 2a.
  • the control board 8 is provided inside the vicinity of the boundary between the lower end portion of the connecting portion 2d and the battery pack mounting portion 2c.
  • a battery pack 4 serving as a drive source (power source) for the motor 6 is detachably mounted (slide connection) on the battery pack mounting portion 2c. It is desirable that the battery pack 4 is removable from the power tool.
  • the battery pack mounting portion 2c is provided with a terminal portion 3 that is electrically connected to the terminal portion of the battery pack 4 and a rail portion 23b that guides the mounting of the battery pack 4.
  • a U-shaped wall portion 23 is provided on the lower surface of the battery pack mounting portion 2c so as to straddle the left portion, the front portion, and the right portion of the lower surface.
  • the wall portion 23 extends downward from the lower surface of the battery pack mounting portion 2c.
  • Rail portions 23b projecting inward are provided on the inner surfaces (mutually opposed surfaces) of the left portion and the right portion of the wall portion 23, respectively.
  • Straightening portions 23a are provided on the outer surfaces of the left and right portions of the wall portion 23, respectively.
  • the straightening portion 23a is a guide (rib) extending in the vertical direction.
  • the lower surface of the battery pack mounting portion 2c and the battery pack 4 mounted on the battery pack mounting portion 2c are covered with a cover 17 that can be opened and closed, which will be described later.
  • the operation panel 20 is provided near the rear end of the lower surface of the battery pack mounting portion 2c.
  • the operation panel 20 is also covered with the cover 17.
  • the operation panel 20 is positioned so as to overlap the battery pack 4 in the front-rear direction.
  • the operation panel 20 faces the upper surface of the rear end portion of the battery pack 4 with a gap. Through this gap, the operator can operate the operation panel 20.
  • the upper surface of the rear end portion of the battery pack 4 is inclined so as to go downward toward the rear. Therefore, even when the battery pack 4 is attached, the operation panel 20 can be easily seen from diagonally below the rear, and the operation panel 20 can be easily operated. As shown in FIG.
  • the operation panel 20 is provided with a speed (frequency) switching button 21 and a speed (frequency) display LED 22.
  • the speed switching button 21 is an operation unit for the operator to switch the rotation speed of the constant speed control of the motor 6, that is, the vibration frequency of the tip tool 10.
  • the number of rotations per unit time, that is, the rotation speed is also simply referred to as "the number of rotations”.
  • the speed display LED 22 is a speed display unit that displays (notifies the operator) the number of rotations selected by the speed switching button 21.
  • the speed switching button 21 may be used to switch whether or not constant speed control of the motor 6 is executed.
  • the motor 6 as the load unit is an inner rotor type brushless motor.
  • a rotor core 6b made of a magnetic material that rotates integrally with the rotating shaft 6a is provided around the rotating shaft 6a.
  • a rotor magnet (permanent magnet) 6c is inserted and held in the rotor core 6b.
  • a plurality (for example, four) of rotor magnets 6c are provided at equal intervals (for example, 90 degree intervals) in the axial direction.
  • a stator core 6d is provided around the rotor core 6b (fixed to the motor accommodating portion 2a).
  • a stator coil 6e is provided on the stator core 6d.
  • a switching element substrate 9 is provided behind the stator core 6d.
  • the switching element substrate 9 mounts a switching element of an inverter circuit that supplies a drive current to the motor 6.
  • a fan 7 is attached to the rotating shaft 6a in front of the stator core 6d. The fan 7 rotates integrally with the rotating shaft 6a to generate cooling air for cooling the motor 6.
  • the cooling air enters the housing 2 from the intake port 2e, cools the motor 6, and exits the housing 2 from the exhaust port 2f.
  • the flow of the cooling air generated by the fan 7 is shown in FIG.
  • the tip tool 10 extends forward from the front end of the housing 2.
  • the tip tool 10 includes a vibrating portion 11, a flexible hose 12, and a flexible shaft 13.
  • the flexible shaft 13 is directly connected to the rotating shaft 6a of the motor 6 and rotates integrally with the motor 6.
  • the flexible hose 12 covers the periphery of the flexible shaft 13.
  • the vibrating portion 11 is connected to the front end portion of the flexible hose 12.
  • the vibrating portion 11 has an eccentric weight 11a inside.
  • the eccentric weight 11a is rotationally driven by the motor 6 via the flexible shaft 13.
  • the center of gravity of the eccentric weight 11a is eccentric with respect to the central axis of the vibrating portion 11.
  • the vibrating portion 11 vibrates due to the rotation of the eccentric weight 11a. That is, the vibrating unit 11 is vibrated by the motor 6.
  • the operator inserts the vibrating vibrating portion 11 into the ready-mixed concrete to perform driving work and compaction work.
  • the cover 17 is connected to the housing 2 by a shaft portion 18 forming a hinge mechanism at the front end portion of the battery pack mounting portion 2c.
  • the cover 17 can be opened and closed with respect to the housing 2 by the support of the shaft portion 18.
  • the battery pack 4 is entirely covered by the cover 17 and the battery pack mounting portion 2c.
  • a sealing member (not shown) such as an elastomer is integrally molded on the outer surface of the battery pack mounting portion 2c. This sealing member is pressed against the upper end of the cover 17 when the cover 17 is closed.
  • the gap at the boundary between the battery pack mounting portion 2c and the cover 17 is filled, and foreign matter is prevented from entering the cover 17 through the gap.
  • the cover 17 has a latch operating portion 17a and a latch claw portion 17b at the rear portions of the left and right side surfaces, respectively.
  • the latch operating portion 17a and the latch claw portion 17b form a latch mechanism that locks the cover 17 to the housing 2 in a closed state.
  • the latch mechanism is provided on both the left and right sides of the rear end side of the cover 17, respectively.
  • the battery pack mounting portion 2c has claw portions 2g that engage with the latch claw portion 17b on both the left and right sides, respectively. By engaging the latch claw portion 17b and the claw portion 2g, the cover 17 is locked to the housing 2 in a closed state. The operator can release the engagement between the latch claw portion 17b and the claw portion 2g and open the cover 17 by pushing the latch operation portion 17a inward.
  • the cover 17 is a box-shaped (substantially rectangular parallelepiped), for example, a resin molded body.
  • the portion of the cover 17 excluding the movable portion 25 described later is preferably a single molded body.
  • the side surface of the cover 17 may warp (deform) inward.
  • the side surface in the longitudinal direction that is, the side surface provided with the latch operating portion 17a and the latch claw portion 17b, has a larger amount of warpage than the side surface in the lateral direction.
  • the latch claw portion 17b of the cover 17 may not engage with the claw portion 2g of the battery pack mounting portion 2c, and the cover 17 cannot be locked in the closed state.
  • the straightening portion 23a provided on the battery pack mounting portion 2c shown in FIGS. 10 to 13 is provided to correct (suppress) the inward warp of the left and right side surfaces of the cover 17.
  • the straightening portion 23a is located slightly forward of the center of the cover 17 in the front-rear direction.
  • the straightening portion 23a contacts the upper ends of the left and right side surfaces of the cover 17 in the process of closing the cover 17 and in the state where the cover 17 is closed, and presses the left and right side surfaces of the cover 17 toward the outside.
  • the direction in which the straightening force of the straightening portion 23a acts and the direction in which the engaging force acts between the latch claw portion 17b of the cover 17 and the claw portion 2g of the battery pack mounting portion 2c are substantially moving directions, both in the left-right direction. is there.
  • the engaging force between the latch claw portion 17b and the claw portion 2g applied when the cover 17 is closed acts to press the left and right side surfaces of the cover 17 inward.
  • the straightening force of the straightening portion 23a acts to press the left and right side surfaces of the cover 17 toward the outside.
  • the lower end portion of the straightening portion 23a has an R shape.
  • the straightening portion 23a may be configured to come into contact with the cover 17 only when the cover 17 is warped inward.
  • the straightening portion 23a realizes a well-balanced reduction of the operating load on the latch operating portion 17a required to disengage the latch claw portion 17b and the claw portion 2g and the stability of the latch engagement. It also works. Hereinafter, a specific description will be given.
  • the latch mechanism is provided on the back surface (side surface in the lateral direction) of the cover 17, the width of the back surface of the cover 17 is narrow, so that the operating load required to disengage the latch mechanism (hereinafter, "required operating load”). ”) Is large, and it is not easy to use.
  • the straightening portion 23a reduces the required operating load as compared with the case where the latch mechanism is provided on the back surface of the cover 17, and suppresses the risk of the cover 17 unintentionally opening as compared with the case without the straightening portion 23a. is there.
  • the more the straightening portion 23a is provided in the front the smaller the required operating load is, and the more the straightening portion 23a is provided in the rear, the risk of the cover 17 being unintentionally opened is suppressed.
  • the adapter 27 can also be mounted on the battery pack mounting portion 2c.
  • the adapter 27 has the same case shape and terminal structure as the battery pack 4, but does not contain a battery cell inside.
  • a cord 28 for connecting to an external DC power supply device extends from the rear lower end of the adapter 27.
  • the DC power output by the DC power supply device is supplied to the electric device 1 via the cord 28 and the adapter 27.
  • a part of the cover 17 is a movable portion 25 that can be opened and closed.
  • FIG. 18 shows the closed state of the movable portion 25
  • FIG. 20 shows the open state of the movable portion 25.
  • the movable portion 25 is, for example, a plate body made of a substantially rectangular resin molded body.
  • the movable portion 25 has rail portions 25a at both left and right ends, respectively. Each intermediate portion of the left and right rail portions 25a is provided with a locking convex portion 25b projecting rearward.
  • the cover 17 has a recessed groove 17j that engages with the rail portion 25a. Holes (locking portions) 17e and 17f that engage with the locking convex portion 25b are provided in the intermediate portion of the concave groove 17j.
  • the movable portion 25 is closed. It is in a state.
  • the movable portion 25 may be used in the closed state.
  • the state in which the locking convex portion 25b of the movable portion 25 is engaged with the hole portion 17e on the upper side of the cover 17 and the movable portion 25 is locked is the open state of the movable portion 25. Is.
  • the adapter 27 is mounted on the battery pack mounting portion 2c, the movable portion 25 is used in the open state.
  • an opening 17 g is formed in the center of the lower end portion of the back surface of the cover 17.
  • the opening 17g serves as an outlet for pulling out the cord 28 extending from the adapter 27 to the outside of the cover 17.
  • the groove (recess) 2i of the battery pack mounting portion 2c shown in FIG. 4 or the like is a space in which the upper end portion of the movable portion 25 in the open state is located, and is a space through which the movable portion 25 passes when the movable portion 25 is attached or detached. is there.
  • the movable portion 25 can be separated (removed) from the cover 17 as shown in FIGS. 15 to 17.
  • the upper end of the movable portion 25 is located at the same height as or lower than the lower end of the handle 2b. As a result, it is possible to prevent the movable portion 25 in the open state from hitting the hand of the operator holding the handle 2b and deteriorating usability.
  • the procedure for attaching the adapter 27 to the battery pack mounting portion 2c and closing the cover 17 is as follows.
  • the movable portion 25 is separated from the cover 17.
  • the adapter 27 is attached to the battery pack attachment portion 2c.
  • the cover 17 is closed so that the cord 28 passes through the gap (the portion where the movable portion 25 exists) on the back surface of the cover 17.
  • the movable portion 25 is attached to the back surface of the cover 17 by sliding it from above. As a result, the states shown in FIGS. 22 to 25 are obtained.
  • FIG. 26 is a block diagram of the power device 1.
  • the control unit 40 is mounted on the control board 8 shown in FIG.
  • the control unit 40 performs various controls such as drive control of the inverter circuit 43.
  • the inverter circuit 43 includes switching elements Q1 to Q6 such as IGBTs and FETs connected by a three-phase bridge.
  • the switching elements Q1 to Q6 perform a switching operation according to the control of the control unit 40, and supply a drive current to the stator coil 6e (each winding of U, V, W) of the motor 6.
  • the resistors Rs are provided in the path of the current of the motor 6 (hereinafter, also referred to as “motor current”).
  • the control circuit voltage supply circuit 46 converts the voltage of the battery pack 4 into a voltage suitable for the operation of the control unit 40 and supplies the voltage to the control unit 40.
  • the magnetic sensor 42 is, for example, a Hall element or a Hall IC. The magnetic sensor 42 outputs a signal corresponding to the rotation position (rotor rotation position) of the motor 6.
  • the motor current detection circuit 37 detects the drive current (load) of the motor 6 by the voltage across the detection resistor Rs and transmits it to the calculation unit 34.
  • the switch operation detection circuit 38 detects the operation of the trigger switch 5 by the user and transmits it to the calculation unit 34.
  • the rotor position detection circuit 35 detects the rotation position of the motor 6 based on the signal from the magnetic sensor 42 and transmits it to the calculation unit 34.
  • the calculation unit 34 includes a microcontroller and the like.
  • the calculation unit 34 drives the control signal output circuit 45 according to the rotation position of the motor 6 detected by the rotor position detection circuit 35, and performs switching control (for example, PWM control) of the switching elements Q1 to Q6 of the inverter circuit 43.
  • the calculation unit 34 calculates the rotation speed of the motor 6 based on the detection result of the rotor position detection circuit 35.
  • the calculation unit 34 has a soft start control function, a constant speed control function, a brake control function, and an overcurrent protection function (overload protection function).
  • the soft start control is a control in which the rotation speed of the motor 6 is gradually increased toward a target rotation speed (set rotation speed) by duty control when the motor 6 is started.
  • the constant speed control is a control that maintains the rotation speed of the motor 6 at a set rotation speed regardless of the load applied to the motor 6 by duty control. Even in constant speed control, when the load increases and the duty ratio of the PWM control of the motor 6 reaches the maximum value, the rotation speed of the motor 6 decreases when the load increases further.
  • the brake control is a control in which an electric brake is applied to the motor 6 to decelerate and stop the motor 6 when the trigger switch 5 is turned off.
  • the switching elements Q4 to Q6 on the lower arm side are continuously turned on while the switching elements Q1 to Q3 on the upper arm side are kept off.
  • the overcurrent protection function is a function of stopping energization of the stator coil 6e when the motor current exceeds the overcurrent protection threshold value (hereinafter, also referred to as “overcurrent threshold value”).
  • FIG. 27 is a time chart showing an example of the operation of the power device 1 in the compaction work.
  • the operation of a power device that does not have a soft start control function, a constant speed control function, and a brake control function is also shown.
  • the operation (solid line) of the embodiment will be described.
  • the calculation unit 34 gradually increases the duty ratio by soft start control to gradually increase the rotation speed of the motor 6 toward the target rotation speed of 200 Hz. To go.
  • time t2 after the rotation speed of the motor 6 reaches the target rotation speed, the operator inserts the vibrating portion 11 of the tip tool 10 into the ready-mixed concrete.
  • FIG. 28 is a graph showing the relationship between the vibration frequency of the tip tool 10 of the power device 1, that is, the rotation speed of the motor 6 and the torque of the motor 6.
  • 200Hz (12000rpm) is a rotation speed (vibration frequency) suitable for compaction work.
  • the compaction work is a work for making concrete having excellent strength, watertightness, and durability.
  • the driving work is the work of pouring ready-mixed concrete carried by a concrete mixer truck into a formwork for concrete construction using a pump.
  • the power device 1 is used for the work of flowing the ready-mixed concrete by giving vibration to the ready-mixed concrete and leveling it so that the height of the ready-mixed concrete is uniform, and the work of pouring the ready-mixed concrete into every corner of the formwork. Will be done.
  • the practical load region of the power device 1 is approximately 0.06-0.12 Nm, and the constant speed control rotation speed is maintained in this region.
  • the target rotation speed is controlled in a state where the duty ratio is smaller than 100%, the duty ratio is increased even if the battery capacity decreases or the load increases. Therefore, the target rotation speed can be maintained, and insufficient defoaming during compaction and deterioration of work efficiency can be suppressed.
  • FIG. 29 is a time chart showing an example of the operation according to the pulling amount (operating amount) of the trigger switch 5 in the power device 1.
  • the calculation unit 34 may have a shift control function that adjusts the rotation speed of the motor 6 according to the pulling amount of the trigger switch 5.
  • FIG. 29 shows the relationship between the pulling amount of the trigger switch 5 and the rotation speed of the motor 6 when the shift control is performed.
  • the pulling amount of the trigger switch 5 exceeds the amount of play, energization of the motor 6 is started.
  • the rotation speed of the motor 6 increases.
  • the rotation speed of the motor 6 reaches the target rotation speed of the constant speed control, the rotation speed of the motor 6 does not change even if the pulling amount of the trigger switch 5 is further increased.
  • the rotation speed of the motor 6 is the target rotation of the constant speed control as soon as the pull amount of the trigger switch 5 exceeds the play amount. Soar towards numbers.
  • the cover 17 has a latch mechanism including a latch operating portion 17a and a latch claw portion 17b on both the left and right sides. Therefore, the operator can open the cover 17 by grasping the latch operating portion 17a from the left-right direction, which is the lateral direction of the cover 17, to release the engagement between the latch operating portion 17a and the claw portion 2g, which is convenient. Is good.
  • a straightening portion 23a is provided on the battery pack mounting portion 2c, and the right and left side surfaces of the cover 17 are pressed outward by the straightening portion 23a. Therefore, even if the left and right side surfaces of the cover 17 are warped inward, the warp is corrected. Therefore, it is possible to suppress the risk that the latch claw portion 17b of the cover 17 and the claw portion 2g of the battery pack mounting portion 2c cannot be engaged due to the warp, and it is possible to increase the certainty that the cover 17 is locked in the closed state. , Easy to use.
  • the straightening portion 23a makes it possible to reduce the operating load required to disengage the latch mechanism and to stably lock the cover 17 by the latch mechanism in a well-balanced manner, which is convenient.
  • the cover 17 is provided with a movable portion 25 that can be opened and closed, and the cord 28 extending from the adapter 27 can be pulled out of the cover 17 through the opening 17 g formed in the open state of the movable portion 25. Therefore, the electric device 1 is configured to cover the battery pack 4 mounted on the battery pack mounting portion 2c as a whole by the cover 17, but can also suitably correspond to the adapter 27. Specifically, even when the adapter 27 is mounted on the battery pack mounting portion 2c instead of the battery pack 4, the cover 17 can be closed and used, and foreign matter (concrete, etc.) can be suppressed from adhering to the adapter 27. Easy to use.
  • the movable portion 25 can be locked to the cover 17 in the open state as shown in FIGS. 22 to 25. Therefore, it is not necessary to remove the movable portion 25 and store it separately, which is convenient.
  • the motor 6 forming the load unit is a brushless motor, various controls are possible as compared with the case of a brushed motor, and workability can be improved. Further, unlike the case of a motor with a brush, it is possible to eliminate exposed electrical contacts, so that it is easy to improve waterproofness.
  • the cover 17 has a latch mechanism including a latch operating portion 17a and a latch claw portion 17b on both the left and right sides. Therefore, the operator can open the cover 17 by releasing the engagement between the latch operation portion 17a and the claw portion 2g by grasping the latch operation portion 17a from the left-right direction which is the lateral direction of the cover 17. Good sex.
  • the motor 6 forming the load unit is a brushless motor, various controls are possible as compared with the case of a brushed motor, and workability can be improved. Further, unlike the case of a motor with a brush, it is possible to eliminate exposed electrical contacts, so that it is easy to improve waterproofness.
  • the arithmetic unit 34 Since the arithmetic unit 34 has a soft start control function of the motor 6, it is possible to suppress a large current at the start of the motor 6 and an overload on the circuit contacts due to the large current. In addition, the scattering of concrete adhering to the vibrating portion 11 can be suppressed.
  • the vibration frequency suitable for the work content can be maintained in the entire practical load region, and the workability can be improved. Further, since the rotation speed of the motor 6 does not increase unnecessarily when there is no load, power consumption can be suppressed and the scattering of concrete adhering to the vibrating portion 11 can also be suppressed.
  • the calculation unit 34 Since the calculation unit 34 has a brake control function for the motor 6, the motor 6 can be stopped quickly when the operator turns off the trigger switch 5, and workability can be improved.
  • the second embodiment of the present invention will be described with reference to FIGS. 30 to 33.
  • the electrical equipment of the present embodiment is different from that of the first embodiment in that the cover 17 is replaced with the cover 17A, and is the same in other respects.
  • the cover 17A has the same configuration as the cover 17 except for the shape of the movable portion 25.
  • the movable portion 25 has a notch portion 25e at the lower end portion as shown in FIG.
  • the notch 25e forms an opening 17g as shown in FIGS. 31 and 32 when the movable portion 25 is mounted.
  • the inner edge of the notch 25e is U-shaped, has a curved (arc-shaped) portion along the outer peripheral surface of the upper half of the cord 28, and is in close proximity to or in contact with the outer peripheral surface of the upper half of the cord 28.
  • the area of the gap between the cord 28 and the inner edge of the opening 17g is reduced as compared with the first embodiment, so that the effect of suppressing foreign matter adhesion to the adapter 27 is enhanced.
  • the third embodiment of the present invention will be described with reference to FIGS. 34 to 37.
  • the electrical equipment of the present embodiment is different from that of the second embodiment in that the cover 17A is replaced with the cover 17B, and is the same in other respects.
  • the cover 17B has a point that the edge portion 17k facing the lower end portion of the movable portion 25 is curved (arc-shaped) along the outer peripheral surface of the lower half of the cord 28, and a notch of the movable portion 25.
  • the inner edge of the portion 25e is connected to the edge portion 17k and is curved (arc-shaped) along the outer peripheral surface of the upper half of the cord 28, and is the same in other respects.
  • the edge portion 17k and the inner edge of the notch portion 25e are combined to form a circumferential shape (closed curved shape) along the outer peripheral surface of the cord 28, and are in close proximity to or in contact with the outer peripheral surface of the cord 28 all around.
  • the area of the gap between the cord 28 and the inner edge of the opening 17g is further reduced as compared with the second embodiment, so that the effect of suppressing foreign matter adhesion to the adapter 27 is further enhanced.
  • Embodiment 4 of the present invention will be described with reference to FIGS. 38 and 39.
  • the electrical equipment of the present embodiment is different from that of the third embodiment in that the cover 17B is replaced with the cover 17C, and is the same in other respects.
  • the cover 17C has an in-row structure in which the engagement portion between the edge portion 17k and the outer peripheral surface of the lower half of the cord 28 has an in-row structure, and the inner edge of the notch portion 25e of the movable portion 25 and the upper half of the cord 28. It differs in that the engaging portion with the outer peripheral surface of the above forms an in-row structure, and is in agreement in other respects.
  • the inner edges of the edge portion 17k and the notch portion 25e are formed so as to be convex.
  • a recess 28a is provided on the outer peripheral surface of the cord 28.
  • the recess 28a goes around the outer peripheral surface of the cord 28 and closes.
  • the inner edges of the edge portion 17k and the notch portion 25e fit into the recess 28a of the cord 28 to form an inro structure. According to the present embodiment, by adopting the in-row structure, the effect of suppressing foreign matter adhesion to the adapter 27 is further enhanced as compared with the third embodiment.
  • Only one of the engaging portion between the edge portion 17k and the outer peripheral surface of the lower half of the cord 28 and the engaging portion between the inner edge of the notch 25e of the movable portion 25 and the outer peripheral surface of the upper half of the cord 28 has an inlay structure. It may be.
  • the straightening portion 23a may be provided on the cover 17.
  • An elastic body such as rubber or sponge may be provided to fill the space between the inside of the left and right side surfaces of the cover 17 and the outside of the left and right side surfaces of the battery pack 4 or the adapter 27, and this elastic body may be used as a straightening portion.
  • the elastic body also has an effect of preventing the battery pack 4 or the adapter 27 from rattling.
  • the movable portion 25 may be made transparent or translucent so that the inside of the cover 17 can be seen through the movable portion 25 from the outside of the cover 17.
  • the entire cover 17 may be transparent or translucent.
  • the movable portion 25 when the adapter 27 is attached to the battery pack mounting portion 2c and used, the movable portion 25 may be removed before use. In this case, the effect of suppressing the adhesion of foreign matter to the adapter 27 is reduced, and the movable portion 25 needs to be stored separately, but the same effect can be obtained in other respects.
  • the cover 17 may be a slide type that can be attached to and detached by sliding to the lower end portion of the housing 2.
  • the electrical equipment of the present invention may be of a type other than the concrete vibrator.
  • Stator core 6e ... Stator coil, 7 ... Fan, 8 ... Control board, 9 ... Switching element Substrate, 10 ... Tip tool, 11 ... Vibration part, 11a ... Eccentric weight (ambassador), 12 ... Flexible hose, 13 ... Flexible shaft, 17, 17A to 17C ... Cover, 17a ... Latch operation part, 17b ... Latch claw part 17e, 17f ... Hole (locking part), 17g ... Opening, 17i ... Connecting part, 17j ... Recessed groove, 17k ... Edge, 18 ... Shaft, 20 ... Operation panel, 21 ... Speed switching button (Operation part) ), 22 ... Speed display LED (speed display part), 23 ...

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Biophysics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Battery Mounting, Suspending (AREA)
  • Portable Power Tools In General (AREA)
  • Casings For Electric Apparatus (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
PCT/JP2020/036450 2019-11-07 2020-09-25 手持ち式動力機器 Ceased WO2021090605A1 (ja)

Priority Applications (5)

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EP20884736.8A EP4056286A4 (en) 2019-11-07 2020-09-25 HAND TOOL
CN202080077075.3A CN114641599B (zh) 2019-11-07 2020-09-25 手持式动力设备
JP2021554841A JP7380701B2 (ja) 2019-11-07 2020-09-25 手持ち式動力機器
US17/774,475 US20220389727A1 (en) 2019-11-07 2020-09-25 Handheld power tool
JP2023186120A JP2024008982A (ja) 2019-11-07 2023-10-31 カバー及び手持ち式動力機器

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JP2019202086 2019-11-07
JP2019-202086 2019-11-07
JP2020041620 2020-03-11
JP2020-041620 2020-03-11

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EP (1) EP4056286A4 (https=)
JP (2) JP7380701B2 (https=)
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023081507A1 (en) * 2021-11-08 2023-05-11 Milwaukee Electric Tool Corporation Concrete vibrator
US20230249330A1 (en) * 2022-02-10 2023-08-10 Milwaukee Electric Tool Corporation Modular concrete tool
USD1000927S1 (en) 2021-04-22 2023-10-10 Milwaukee Electric Tool Corporation Concrete vibrator
US11894572B2 (en) 2020-05-22 2024-02-06 Black & Decker Inc. Power tool with battery pack enclosure
EP4306744A3 (en) * 2022-07-11 2024-03-13 Milwaukee Electric Tool Corporation Concrete vibrator
WO2024195279A1 (ja) * 2023-03-22 2024-09-26 パナソニック株式会社 電動工具
USD1046583S1 (en) 2022-07-11 2024-10-15 Milwaukee Electric Tool Corporation Concrete vibrator
US12129673B2 (en) 2019-11-20 2024-10-29 Milwaukee Electric Tool Corporation Concrete vibrator for use in a briefcase configuration
EP4482653A4 (en) * 2022-02-24 2026-02-25 Black & Decker Inc CORDLESS POWER TOOL SYSTEM

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021064086A1 (en) * 2019-10-02 2021-04-08 Husqvarna Ab Battery adapter assembly and hand-held power tool
CN115102460B (zh) * 2022-05-24 2025-08-22 江苏东成工具科技有限公司 电动工具调速系统及方法
EP4342639A1 (de) * 2022-09-23 2024-03-27 C. & E. Fein GmbH Lagervorrichtung für ein akkumulatormodul an einem handwerkzeug
DE102023201866A1 (de) 2023-03-01 2024-09-05 Robert Bosch Gesellschaft mit beschränkter Haftung Handgeführtes Bearbeitungsgerät
WO2025155344A1 (en) * 2024-01-18 2025-07-24 Black & Decker Inc. Cordless power tool system
CN118017042B (zh) * 2024-02-01 2024-08-23 无锡晨涛新能源科技有限公司 一种电池激活装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09158483A (ja) 1995-12-13 1997-06-17 Makita Corp コンクリートバイブレータ
JPH11333763A (ja) * 1999-04-30 1999-12-07 Makita Corp 電動工具のバッテリ取付構造
JP2001269874A (ja) * 2000-03-24 2001-10-02 Makita Corp 締付工具
JP2003266334A (ja) * 2002-03-15 2003-09-24 Makita Corp バッテリ駆動式電動工具およびバッテリ駆動式電動工具の使用方法
JP2016010835A (ja) * 2014-06-30 2016-01-21 株式会社マキタ ナット締付け機

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0744462Y2 (ja) * 1988-07-11 1995-10-11 株式会社マキタ 携帯用電動工具
US5725304A (en) * 1995-12-13 1998-03-10 Makita Corporation Battery concrete vibrator
JP2963866B2 (ja) * 1995-12-13 1999-10-18 株式会社マキタ 電動工具のバッテリ取付構造
EP1982798A3 (en) * 2000-03-16 2008-11-12 Makita Corporation Power tool
JP2012038465A (ja) * 2010-08-04 2012-02-23 Canon Inc 電子機器
JP2012048885A (ja) * 2010-08-25 2012-03-08 Makita Corp バッテリ装置
US8439600B2 (en) * 2011-01-17 2013-05-14 Scott Brening Portable vibratory concrete float
CN206060105U (zh) * 2016-08-22 2017-03-29 江苏万威电气有限公司 一种配电箱的出线装置
TWM578899U (zh) * 2017-06-30 2019-06-01 美商米沃奇電子工具公司 電氣組合、動力工具系統、電動馬達總成、電動馬達、電池組以及馬達總成
WO2019027115A1 (ko) * 2017-08-04 2019-02-07 주식회사 에코파워팩 휴대용 전원 공급 장치
US20220341198A1 (en) * 2019-11-20 2022-10-27 Milwaukee Electric Tool Corporation Concrete vibrator
CN218715211U (zh) * 2019-11-20 2023-03-24 米沃奇电动工具公司 混凝土振动器
CN113927545B (zh) * 2020-07-14 2025-10-14 株式会社牧田 电动作业设备
JP7631046B2 (ja) * 2021-03-12 2025-02-18 株式会社マキタ コンクリートバイブレータ
EP4123105A1 (de) * 2021-07-20 2023-01-25 Hilti Aktiengesellschaft Rückentragvorrichtung
EP4306744A3 (en) * 2022-07-11 2024-03-13 Milwaukee Electric Tool Corporation Concrete vibrator
EP4385667B1 (en) * 2022-07-27 2025-07-16 Milwaukee Electric Tool Corporation Concrete vibrator system
US12559955B2 (en) * 2022-08-04 2026-02-24 Honda Motor Co., Ltd. Concrete vibrator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09158483A (ja) 1995-12-13 1997-06-17 Makita Corp コンクリートバイブレータ
JPH11333763A (ja) * 1999-04-30 1999-12-07 Makita Corp 電動工具のバッテリ取付構造
JP2001269874A (ja) * 2000-03-24 2001-10-02 Makita Corp 締付工具
JP2003266334A (ja) * 2002-03-15 2003-09-24 Makita Corp バッテリ駆動式電動工具およびバッテリ駆動式電動工具の使用方法
JP2016010835A (ja) * 2014-06-30 2016-01-21 株式会社マキタ ナット締付け機

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12129673B2 (en) 2019-11-20 2024-10-29 Milwaukee Electric Tool Corporation Concrete vibrator for use in a briefcase configuration
US12195982B2 (en) 2019-11-20 2025-01-14 Milwaukee Electric Tool Corporation Concrete vibrator for use in backpack and stationary configurations
US11894572B2 (en) 2020-05-22 2024-02-06 Black & Decker Inc. Power tool with battery pack enclosure
US12609403B2 (en) 2020-05-22 2026-04-21 Black & Decker Inc. Power tool with battery pack enclosure
USD1000927S1 (en) 2021-04-22 2023-10-10 Milwaukee Electric Tool Corporation Concrete vibrator
WO2023081507A1 (en) * 2021-11-08 2023-05-11 Milwaukee Electric Tool Corporation Concrete vibrator
US20230249330A1 (en) * 2022-02-10 2023-08-10 Milwaukee Electric Tool Corporation Modular concrete tool
US12491616B2 (en) * 2022-02-10 2025-12-09 Milwaukee Electric Tool Corporation Modular concrete tool
EP4482653A4 (en) * 2022-02-24 2026-02-25 Black & Decker Inc CORDLESS POWER TOOL SYSTEM
EP4306744A3 (en) * 2022-07-11 2024-03-13 Milwaukee Electric Tool Corporation Concrete vibrator
USD1046583S1 (en) 2022-07-11 2024-10-15 Milwaukee Electric Tool Corporation Concrete vibrator
WO2024195279A1 (ja) * 2023-03-22 2024-09-26 パナソニック株式会社 電動工具

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US20220389727A1 (en) 2022-12-08
JP7380701B2 (ja) 2023-11-15
CN114641599A (zh) 2022-06-17
JPWO2021090605A1 (https=) 2021-05-14
CN114641599B (zh) 2024-08-06
JP2024008982A (ja) 2024-01-19
EP4056286A4 (en) 2022-11-30
EP4056286A1 (en) 2022-09-14

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