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WO2018168421A1 - Machine de polissage portable - Google Patents

Machine de polissage portable Download PDF

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Publication number
WO2018168421A1
WO2018168421A1 PCT/JP2018/007013 JP2018007013W WO2018168421A1 WO 2018168421 A1 WO2018168421 A1 WO 2018168421A1 JP 2018007013 W JP2018007013 W JP 2018007013W WO 2018168421 A1 WO2018168421 A1 WO 2018168421A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
main body
gripping
polishing machine
motor
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/JP2018/007013
Other languages
English (en)
Japanese (ja)
Inventor
アーポーン シリカーン
チットポン グンティーヤ
健一 河合
文秀 杉田
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.)
Makita Corp
Original Assignee
Makita Corp
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 Makita Corp filed Critical Makita Corp
Publication of WO2018168421A1 publication Critical patent/WO2018168421A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • 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

Definitions

  • the present invention relates to a portable polishing machine such as a sander, a polisher, or a grinder.
  • Patent Document 1 As disclosed in Japanese Patent Application Laid-Open No. 2013-129015 (Patent Document 1), a portable sander is known in which both sides of the housing other than the battery mounting portion side and the upper portion are gripped portions. The battery mounting part is formed at the rear part of the housing. Further, as disclosed in Japanese Patent Application Laid-Open No. 2011-31383 (Patent Document 2), a portion in front of the power cord connecting portion in the upper portion of the motor housing is used as a grip portion, and a cylindrical portion in the front portion of the motor housing.
  • a sander is known in which a movable handle that is rotatable around a central axis of the cylindrical portion and fixed at an arbitrary position in the circumferential direction is attached to the surface.
  • a main object (first object) of the present invention is to provide a portable polishing machine having means capable of gripping the battery peripheral part on the side without the housing and protecting the battery from unexpected contact or the like. That is.
  • Another object (second object) of the present invention is to provide a portable polishing machine in which the battery mounting portion is arranged and the operability is good without being increased in size.
  • the invention according to claim 1 is attached to the main body with the main body having a motor and a part of the outer surface being an exposed surface, and the motor A battery serving as a power source for the battery, a first gripper provided on the upper portion of the main body and capable of gripping, and disposed so as to surround a part or all of the exposed surface of the battery. And a second gripping part.
  • the invention according to claim 2 is characterized in that, in the above invention, the battery is disposed below the second gripping portion. According to a third aspect of the present invention, in the above invention, the battery is disposed closer to the main body than the second gripping portion.
  • the second gripping portion is movable.
  • the second gripping portion is movable between a position that enters the attachment / detachment region of the battery and a position that does not enter the attachment / detachment region.
  • the battery is attached to a front portion of the main body, and the second gripping portion surrounds the front of the battery and a position surrounding the upper portion of the battery. It is possible to move between the two.
  • the invention according to claim 7 is the above invention, comprising an output part driven by the motor and a polishing part attached to the output part, and a left end part and a right end part in the second grip part. At least one of them is located on the inner side in the left-right direction from the left end portion or the right end portion of the polishing portion.
  • the invention described in claim 8 is characterized in that, in the above invention, the battery is attached and detached in the vertical direction.
  • the invention according to claim 9 is the above invention, wherein the second gripping portion is rotatable around a support shaft, and the support shaft is disposed between the battery and the motor. It is characterized by.
  • an invention according to claim 10 is the above invention, wherein the second gripping portion is rotatable around a support shaft, and a convex portion provided on one of the second gripping portion and the main body portion; The second gripping part is fixed to the main body part in a desired posture by engagement with a recess provided on the other side.
  • an invention according to claim 11 includes a main body having a motor, a battery mounted on the main body in a state where a part of the outer surface is an exposed surface, and serving as a power source for the motor.
  • a third gripping portion that is provided so as to protrude rearward from the upper portion of the main body portion and can be gripped, and the battery is mounted on a front portion of the main body portion.
  • a switch for switching a power supply state to the motor is disposed between a rear upper portion of the main body portion and an upper portion of the third gripping portion. It is what.
  • a rear opening portion into which a front end portion of a dust collecting nozzle can be inserted is formed in the lower rear portion of the main body portion.
  • the invention according to claim 14 is characterized in that, in the above-mentioned invention, the third gripping portion is of a size that can be wrapped with one hand.
  • the main effect (first effect) of the present invention is to provide a portable polishing machine that is capable of gripping the peripheral portion of the battery on the side without the housing and has means for protecting the battery from unexpected contact and the like. It is. Further, another effect (second effect) of the present invention is to provide a portable polishing machine in which the battery mounting portion is arranged and the operability is good without being increased in size.
  • FIG. 4 is a cross-sectional view of the sander in FIG. 1 at the center in the left-right direction (AA line in FIG. 3).
  • FIG. 3 is a sectional view taken along line BB in FIG. It is a perspective view at the time of making the 2nd holding
  • FIG. 5 is an exploded perspective view showing a second gripping part in FIG. 4.
  • FIG. 6 is a right side view of FIG. 5.
  • FIG. 7 is a cross-sectional view taken along the line CC of FIG.
  • the embodiment relates to a portable polishing machine, more specifically, a portable sander.
  • the front, rear, top, bottom, left and right in the embodiment and the modification are determined for convenience of explanation, and may change depending on the status of work, the state of the moving member, and the like.
  • this invention is not limited to the said form and the example of a change.
  • FIG. 1 is a perspective view of a sander 1 according to the embodiment
  • FIG. 2 is a cross-sectional view of the sander 1 in the center in the left-right direction (the right side of the figure is the front of the sander 1)
  • FIG. 3 is a BB line in FIG. It is sectional drawing.
  • the sander 1 includes a power unit 2, a power transmission unit 4, an output shaft 6 as an output unit, and a main body having a first gripping unit 8 that is an outline of the power unit 2, the power transmission unit 4, or the output shaft 6.
  • a housing 10, a polishing part 12 attached to the output shaft 6, a battery 14 as a power supply part attached to a battery mounting part 13 formed in the main body housing 10, and a handle 16 as a second gripping part I have.
  • the main body housing 8 or the power unit 2, the power transmission unit 4, and the output shaft 6 supported by the main body 8 constitute a main body unit 18 of the sander 1.
  • the power unit 2 includes an electric motor 20 and a controller 22 that controls the rotation state of the motor 20.
  • the motor 20 includes a motor shaft 24 that is rotationally driven by electric power, and a motor case 26 in which a central portion of the motor shaft 24 is inserted.
  • the motor 20 (motor case 26) is attached to the central portion of the main body housing 10 with the motor shaft 24 in the vertical direction.
  • the controller 22 controls the rotation state of the motor shaft 24, and a substrate (not shown) is disposed in the case, and is attached to the upper portion of the main body housing 10.
  • the power transmission unit 4 includes a small pulley 30 fixed to a lower end portion of the motor shaft 24 outside the motor case 26, and a large pulley 32 connected by the small pulley 30 and the belt 31.
  • the large pulley 32 is fixed to the central portion of the vertical output shaft 6 that is parallel to the motor shaft 24.
  • a central portion of the output shaft 6 and above the large pulley 32 is rotatably supported by a central bearing 34, and an upper end portion of the output shaft 6 is rotatably supported by an upper bearing 36.
  • the central bearing 34 is fixed to the central portion of the main body housing 10 via a plate-shaped bearing retainer 38 that extends in the front, rear, left, and right directions.
  • the bearing retainer 38 also supports the lower end portion of the motor case 26.
  • the upper bearing 36 is attached to the center of the main body housing 10 and below the controller 22.
  • the upper bearing 36 has a smaller diameter than the central bearing 34.
  • a fan 40 is fixed to the central portion of the output shaft 6 and adjacent to the lower side of the large pulley 32.
  • the fan 40 includes a disk-shaped portion 42 connected to the output shaft 6, an upper blade portion 44 having a plurality of blades protruding upward from the upper surface of the disk-shaped portion 42 and arranged in the circumferential direction, and a lower surface from the lower surface of the disk-shaped portion 42.
  • a lower blade portion 46 having a plurality of blades arranged in the circumferential direction.
  • the upper blade portion 44 and the lower blade portion 46 respectively push air outward in the radial direction by rotation.
  • the main body housing 10 is halved and includes a main body housing left part 50 and a main body housing right part 52.
  • the main body housing left part 50 has a plurality of screw bosses 54
  • the main body housing right part 52 has screw holes 56 corresponding to the screw bosses 54.
  • the main body housing 10 includes a box-shaped front part and a rear projecting part 60 (a third projecting part and a part of the first projecting part) projecting rearward from the rear upper part of the front part.
  • the upper part of the box-shaped front part of the main body housing 10 has a rounded shape so that it can be easily applied by the user's hand.
  • the rear protrusion 60 is large enough to be wrapped with one hand.
  • the upper part of the main body housing 10 is a first grip 8 that can be gripped by the user.
  • a front upper portion of the main body housing 10 is a front portion of the first gripping portion 8, and a rear protrusion 60 is a rear portion of the first gripping portion 8.
  • a switch 62 is disposed between the central portion of the first gripping portion 8, that is, between the upper rear portion of the main body housing 10 and the upper portion of the rear protrusion 60.
  • the switch 62 has a plate shape and includes a first button 64 and a second button 66 that are arranged in the front-rear direction on the upper surface.
  • the switch 62 is attached to the main body housing 10 with the upper surface exposed.
  • the switch 62 is electrically connected to the controller 22 and the battery mounting unit 13.
  • the controller 22 sequentially shifts the motor shaft 24. For example, each time the second button 66 is pressed, the motor shaft 24 rotates at the highest speed, high speed, medium speed, and low speed, and returns to the highest speed when the second button 66 is pressed at low speed. It should be noted that the functions of the first button 64 and the second button 66, the number of shift steps and the order of the second button 66, and the like may be changed as appropriate.
  • a first intake port 70 is formed on the right side of the upper portion of the main body housing 10, and a plurality of vertical slits are arranged in front and rear, and a similar first intake port 70 is formed on the left side (not shown). Yes. These first air inlets 70 are disposed outside the controller 22 in the left-right direction. Further, a second intake port 72 is formed in the rear center of the right side surface of the main body housing 10 and a plurality of vertical slits are arranged in front and rear. A similar second intake port 72 is also formed on the left side although not shown. Is formed. These second air inlets 72 are disposed outside the motor 20 in the left-right direction.
  • an exhaust port 74 is formed in the lower part of the right side surface of the main body housing 10, and a plurality of vertical slits are arranged in front and rear, and a similar exhaust port 74 is formed on the left side (not shown). These exhaust ports 74 are disposed on the outer side in the left-right direction of the upper blade portion 44 of the fan 40.
  • a rear opening 76 is formed in the lower rear portion of the main body housing 10, and a front end portion of a dust collection nozzle 78 connected to a dust collection bag (not shown) is placed in the rear opening 76. .
  • the front end portion of the dust collection nozzle 78 passes below the motor 20 and reaches the rear side of the lower blade portion 46 of the fan 40.
  • the polishing unit 12 includes a plate-like polishing plate 80 and sanding paper (not shown) attached to the lower part of the polishing plate 80.
  • the sanding paper or the lower surface of the polishing plate 80 in contact with the sanding paper serves as a polishing surface as a work surface.
  • the polishing plate 80 has a polishing portion bearing 82 in the center.
  • a portion of the polishing plate 80 inside the inner ring of the polishing portion bearing 82 is formed with a screw hole in the vertical direction in an eccentric state with respect to the center of the polishing portion bearing 82.
  • the battery mounting portion 13 is disposed at the upper part of the front end portion (front surface) of the main body housing 10 and has a terminal block 86 disposed at the center portion and a battery claw hole 88 disposed above the terminal block 86.
  • the battery mounting part 13 (terminal of the terminal block 86) is electrically connected to the motor 20 and the controller 22.
  • the battery 14 is a rechargeable battery that can be charged by a charger, and the sander 1 is a rechargeable sander.
  • the battery 14 has a chamfered rectangular parallelepiped shape, and a plurality of terminals 90 and battery claws 92 are arranged on one surface.
  • the battery claw 92 is biased so as to protrude from the installation surface, and can be in a posture of being buried in the installation surface against a biasing force in conjunction with a battery lever (not shown).
  • the battery 14 is mounted on the battery mounting portion 13 by sliding downward from the upper side of the battery mounting portion 13 in a state where the installation surface of the terminal 90 is rearward. At the time of mounting, the terminal 90 of the battery 14 and the terminal of the terminal block 86 of the battery mounting portion 13 are in contact with each other and electrically connected, and the battery claw 92 enters the battery claw hole 88 and is fixed.
  • the rear surface and the lower surface of the outer surface of the battery 14 are hidden by the main body housing 10, and the other front, left, right, and upper surfaces are exposed and become exposed surfaces. Furthermore, at the time of mounting, the upper surface of the battery 14 and the upper surface of the main body housing 10 (first gripping portion 8) are continuous and aligned in the vertical direction.
  • the mounted battery 14 can be removed from the battery mounting portion 13 by sliding the battery claw 92 in the buried position and retracted from the battery claw hole 88 when the user operates the battery lever. Can do. As described above, the battery 14 is mounted from above the battery mounting portion 13, pulled out above the battery mounting portion 13, and attached and detached in the vertical direction.
  • the attachment / detachment region Q of the battery 14 can also be referred to as a region through which the battery 14 passes during attachment / detachment.
  • the controller 22 has a control circuit (not shown) for the battery 14.
  • the control circuit is electrically connected to the battery 14 via the terminal of the terminal block 86 in the battery mounting portion 13.
  • the control circuit may be arranged other than the controller 22.
  • the control circuit includes a high-temperature protection circuit that cuts off power supply when the battery 14 becomes hot. That is, the thermistor for detecting the temperature of the built-in battery cell is mounted on the battery 14, and the control circuit energizes the motor 20 of the battery 14 when the temperature detected by the thermistor exceeds a threshold value. Shut off.
  • control circuit may cut off the energization of the battery 14 when a temperature equal to or higher than the threshold value is detected a plurality of times within a predetermined time, that is, the temperature in the control circuit or the conditions for the interruption are variously changed. May be.
  • the control circuit also includes an overcurrent protection circuit that cuts off power supply when an overcurrent flows. That is, the control circuit grasps the current value of the energization current during the operation of the sander 1 (while the motor 20 is driven), and interrupts the energization of the battery 14 to the motor 20 when the current value exceeds a threshold value. . It should be noted that the current value or the interruption condition in the control circuit may be variously changed.
  • control circuit includes an overdischarge protection circuit that cuts off power supply when overdischarge occurs. That is, the control circuit grasps the voltage value of the battery 14, and when the voltage value is equal to or lower than the threshold value, the control circuit cuts off the energization of the battery 14 to the motor 20.
  • the voltage value in the control circuit or the interruption condition may be variously changed. Further, at least one of the high temperature protection circuit, the overcurrent protection circuit, and the overdischarge protection circuit may be omitted.
  • the handle 16 is an inverted U-shaped member, and includes a columnar grip portion 100, a left arm portion 102 that is orthogonal at the left end, and a right arm portion 104 that is orthogonal at the right end.
  • the handle 16 is movably attached to the main body housing 10 (movable handle).
  • the posture of the handle 16 can be changed by movement. 1 to 3 are drawn in a posture (horizontal posture) in which the handle 16 is directed in the front-rear direction.
  • 4 is a perspective view when the handle 16 is moved 90 degrees from the horizontal posture to a vertical posture
  • FIG. 5 is an exploded perspective view of FIG. 4
  • FIG. 6 is a right side view of FIG. 7 is a cross-sectional view taken along the line CC of FIG.
  • a left bent portion 110 is provided for making the end portion inside the other portion, and the end portion has a thickness direction.
  • a pin head hole 112 opened in the (left-right direction) is provided.
  • a left face spline 113 in which regular peaks and valleys (convex portions and concave portions) are formed in the circumferential direction is provided in the inner opening portion of the pin head hole 112.
  • a right bent portion 114 is provided for making the end inward from the other portions.
  • a pin hole 116 opened in the (left-right direction) is provided.
  • a right face spline 117 formed by forming regular peaks and valleys in the circumferential direction is provided in the inner opening of the pin hole 116.
  • a left recess 120 is formed that is recessed to the right from other portions.
  • a left pin hole 122 is formed in the center of the left depression 120.
  • a left face spline 123 that meshes with the left face spline 113 is provided around the left pin hole 122.
  • the left face spline 123 has a concave portion (valley) that engages with the convex portion (crest) of the left face spline 113, and the convex portion (crest) that engages with the concave portion (valley) of the left face spline 113.
  • a right recess portion 124 that is recessed leftward from other portions is formed.
  • a right pin hole 126 is formed in the center of the right depression 124.
  • a right face spline 127 that meshes with the right face spline 117 is provided around the right pin hole 126.
  • the right face spline 127 has a concave portion (valley) that engages with the convex portion (crest) of the right face spline 117, and the convex portion (peak) that engages with the concave portion (valley) of the right face spline 117.
  • the handle 16 is attached to the main body housing 10 by a pin 130 and a pin screw 132.
  • the pin 130 has a low prismatic pin head 134 and a pin leg 136 protruding from one surface thereof.
  • the pin screw 132 has a disk-shaped pin screw head 138 and a pin screw leg 140 protruding from one surface thereof.
  • the pin screw 132 is rotatable when the user twists the pin screw head 138.
  • a screw groove is formed on the outer curved surface of the pin screw leg 140.
  • a screw hole 142 extending in the axial direction of the pin leg 136 is formed from the plane of the tip of the pin leg 136.
  • the pin screw leg 140 is inserted into the screw hole 142.
  • the pin head hole 112 at the tip of the left arm portion 102 is aligned with the left pin hole 122 of the main body housing 10
  • the pin hole 116 at the tip of the right arm portion 104 is aligned with the right pin hole 126 of the main body housing 10.
  • the pin 130 is attached to the pin head hole 112, the left pin hole 122, the right pin hole 126, and the pin hole 116 by passing the pin 130 in the left-right direction.
  • the pin 130 constitutes a support shaft that supports the handle 16 so as to be rotatable around itself.
  • a pin head 134 having a prismatic shape is inserted into the pin head hole 112 to prevent the pin 130 from rotating.
  • the left dent 120 and the right dent 124 are disposed between the battery 14 and the motor 20, and the pin 130 is disposed between the battery 14 and the motor 20. If the left face splines 113 and 123 are engaged and the right face splines 117 and 127 are engaged, the handle 16 can be in any posture including a horizontal posture and a vertical posture (possible postures by rotation around the pin 130). ). By inserting the pin screw 132 into the screw hole 142 of the pin 130, the pin head 134 presses the left face spline 113 of the handle 16 against the left face spline 123 of the left part 50 of the main body housing and engages the pin screw head.
  • the portion 138 presses and engages the right face spline 117 of the handle 16 with the right face spline 127 of the right portion 52 of the main body housing, thereby fixing the handle 16 from rotating.
  • the left end portion of the handle 16 in the fixed state (the left surface of the grip portion 100 or the left surface of the left arm portion 102) is located on the right side of the left end portion (left side) of the polishing plate 80.
  • the right end portion of the handle 16 in the fixed state (the right surface of the grip portion 100 or the right surface of the right arm portion 104) is located on the left side of the right end portion (right side) of the polishing plate 80.
  • the left end portion of the pin 130 in the fixed state is located on the right side of the left end portion of the handle 16.
  • the right end of the pin head 134 in the fixed state is located on the left side of the right end of the handle 16.
  • Such a sander 1 operates as follows, for example. That is, when the second button 66 of the switch 62 is pressed in a state where the charged battery 14 is mounted on the battery mounting portion 13, the power of the battery 14 is supplied from the battery pack terminal 90 or the battery mounting by the controller 22. It is supplied to the motor 20 via the terminal of the terminal block 86 of the section 13 and the motor shaft 24 is rotationally driven. The rotation of the motor shaft 24 is decelerated and transmitted to the output shaft 6 via the power transmission unit 4 (small pulley 30, belt 31 and large pulley 32), and the polishing unit 12 at the tip of the output shaft 6 is moved by the polishing unit bearing 82. Eccentric rotation.
  • the polishing unit 12 thus rotated is pressed against the material to be polished and moved by the gripping of the handle 16 as the first gripping part 8 and the second gripping part on the upper part of the main body housing 10.
  • an operation such as polishing is performed on the surface of the material to be polished.
  • the handle 16 is in a horizontal posture (the posture in FIG. 1) or a posture close to this, the user holds the first gripping portion 8 with one hand and holds the handle 16 with the other hand, thereby It can be held widely in the front and rear, making it easier to work stably.
  • the handle 16 since the handle 16 is positioned in front, left, and right of the battery 14 and surrounds the exposed surface of the battery 14, even if an object to be polished or a wall approaches the battery 14 unexpectedly, first the handle The battery 14 is protected from unintended contact, and the handle 16 serves as a battery protection means (battery guard) in addition to the role as the second gripping portion. Further, in the horizontal posture, the handle 16 is not in the attachment / detachment region Q of the battery 14, but the exposed surface of the battery 14 surrounded by the handle 16 is difficult to grasp and the battery 14 is relatively difficult to remove. If the posture is a vertical posture that does not enter the attachment / detachment region Q (the posture in FIG.
  • the handle 16 does not surround the battery 14, the exposed surface becomes easy to grasp, and most of the exposed surface is grasped. Thus, the battery 14 can be easily removed. Further, even in the posture in which the handle 16 is lowered forward, that is, in the posture in which the grip portion 100 is adjacent to the front lower portion of the main body housing 10, the handle 16 does not enter the attachment / detachment region Q and the handle 16 does not surround the battery 14. Thus, the battery 14 is easily removed. In addition, when the handle 16 is in a front-up position (the left arm portion 102 or the right arm portion 104 is raised about 60 ° from the horizontal plane), the handle 16 enters the attachment / detachment region Q.
  • the battery 14 can be protected by surrounding the exposed surfaces (front surface, left surface, right surface, and top surface) of the battery 14.
  • the posture of the handle 16 can be easily adjusted by the user loosening the pin screw 132 and rotating the handle 16 appropriately to tighten the pin screw 132 in a desired posture.
  • the handle 16 is fixed by the left face spline 113, 123 and the right face splines 117 and 127 are performed reliably in a simple configuration.
  • the fan 40 is rotated by the rotation of the output shaft 6, and the air is pushed outward by the upper blade portion 44, so that the air flows from the left and right first intake ports 70 and the second intake ports 72 to the exhaust port 74.
  • Windd occurs.
  • the wind from the first air inlet 70 mainly cools the controller 22 and the motor 20.
  • the wind from the second air inlet 72 mainly cools the motor 20.
  • air is pushed outward by the lower blade portion 46 to generate wind from the lower opening 48 of the main body housing 10 to the dust collection nozzle 78, and dust generated during operation is collected in the dust collection nozzle 78.
  • the main body 18 having the motor 20 and the battery 14 serving as a power source for the motor 20 are mounted on the main body 18 with a part of the outer surface (front surface, left surface, right surface, upper surface) being exposed surfaces.
  • the battery 14 can be protected by the handle 16 surrounding the exposed surface of the battery 14.
  • the battery 14 is disposed below the handle 16 that is lifted forward by about 60 °. In other words, the upper end portion of the battery 14 is positioned below the upper end portion of the handle 16 in the forward raising posture. Therefore, the battery 14 is protected from unintended contact from above. Further, the battery 14 is disposed closer to the main body 18 than the handle 16. Therefore, the battery 14 is protected from unintended contact from the outside of the main body 18.
  • the handle 16 is movable. Therefore, the handle 16 is in the posture shown in FIG. 4 in order to polish the high part of the vertical surface, the handle 16 is in the posture in FIG. 4 so that the battery 14 can be easily attached and detached, and the entire exposed surface of the battery 14 is protected as much as possible. Therefore, for example, the handle 16 is rotated to a position 45 ° to 60 ° upward from the state shown in FIG. The handle 16 can be adjusted accordingly. Further, the handle 16 is movable between a position where the battery 14 enters the attachment / detachment area Q and a position where the handle 16 does not enter the attachment / detachment area Q.
  • the handle 16 can be arranged at both a position where importance is attached to workability by gripping and a position where importance is attached to the ease of attaching and detaching the battery 14.
  • the battery 14 is attached to the front part of the main body 18, and the handle 16 (grip part 100) is movable between a position surrounding the front of the battery 14 and a position surrounding the battery 14. Therefore, the battery 14 is disposed between the handle 16 at the position surrounding the front and the main body portion 18 (the first gripping portion 8), so that the sander 1 that is easy to operate with a balanced weight can be obtained. If it is set as the position which surrounds the upper direction of the battery 14, the battery 14 can be protected from the unintended contact from upper direction.
  • an output shaft 6 driven by a motor 20 and a polishing unit 12 attached to the output shaft 6 are provided, and the left end portion of the handle 16 is positioned inward in the left-right direction from the left end portion of the polishing unit 12.
  • the right end portion of the handle 16 is located on the inner side in the left-right direction than the right end portion of the polishing portion 12. Therefore, it is possible to prevent the handle 16 from hitting the wall when the end portion of the polishing portion 12 is applied to the wall portion of the material to be polished, and the sander 1 can be easily handled.
  • the battery 14 is attached and detached in the vertical direction. Therefore, the battery 14 is easy to attach and detach.
  • the handle 16 is rotatable around the pin 130, and the pin 130 is disposed between the battery 14 and the motor 20. Therefore, the member for rotational movement of the handle 16 can be arranged in the dead space between the main members of the sander 1, and the sander 1 becomes compact while the rotatable handle 16 is provided.
  • the handle 16 is rotatable around the pin 130, and a convex portion provided on the handle 16 and the main body 18 (the peaks of the left face splines 113 and 123 and the peaks of the right face splines 117 and 127).
  • the handle 16 and the recesses (the valleys of the left face splines 113 and 123 and the valleys of the right face splines 117 and 127) provided in the handle 16 and the main body 18 are engaged with each other. It is fixed in the posture. Therefore, the handle 16 is securely fixed in each of various postures (stepped postures in which the left face splines 113 and 123 are engaged and the right face splines 117 and 127 are engaged).
  • the sander 1 is mounted on the main body 18 with the motor 20 and a part of the outer surface (front surface, left surface, right surface, upper surface) as an exposed surface, and the battery 14 serving as a power source for the motor 20. And a rear projecting portion 60 provided so as to project rearward from the upper portion of the main body portion 18 and capable of being gripped, and the battery 14 is mounted on the front portion of the main body portion 18. Therefore, in the sander 1, the portion that can be gripped by the rear protrusion 60 becomes longer in the front-rear direction and the operability is good, and the battery mounting portion 13 is disposed on the opposite side of the rear protrusion 60, and the rear It becomes compact while the protrusion 60 is provided.
  • a switch 62 that switches a power supply state to the motor 20 is disposed between the rear upper portion of the main body 18 and the upper portion of the rear protrusion 60. Therefore, the switch 62 is disposed between the upper portion of the main body 18 and the upper portion of the rear projecting portion 60 that are easy to grip in the sander 1, and the switch 62 is disposed in an easy-to-operate state. Furthermore, a rear opening 76 into which the front end of the dust collecting nozzle 78 can be inserted is formed in the lower rear part of the main body 18.
  • the dust collection nozzle 78 extends below the rear projection 60 projecting rearward, the sander 1 when the dust collection nozzle 78 is connected is compact, and the dust collection nozzle 78 obstructs the gripping or operation of the sander 1. It is hard to become.
  • the rear protrusion 60 is large enough to be wrapped with one hand. Therefore, the rear protrusion 60 becomes easier to handle.
  • the handle may be immovable or may be moved by sliding.
  • the movement of the handle includes rotational movement, sliding movement, or a combination thereof.
  • the pin (support shaft) may face a direction other than the left-right direction, or may be arranged at a position other than between the battery and the motor.
  • the battery can be installed by sliding it back and forth in the front-and-rear direction with the terminal facing downward, or by sliding it in the other direction, or by placing it in a battery-equipped battery compartment with or without a lid. Or mounted on the side or rear.
  • the rear projecting portion of the main body portion may be omitted.
  • the rear protrusion may not be a part of the first gripping part.
  • Both the left and right end portions of the handle are not arranged on the inner side in the left-right direction than the left and right end portions of the polishing portion, and only one of them may be arranged on the inner side, or both may not be arranged on the inner side.
  • the handle and the main body after the movement are fixed in place of the face spline or together with the small projections (convex portions) arranged in the circumferential direction and the small holes (concave portions) for receiving the corresponding small projections, or in contact with each other.
  • the exhaust port, the intake port, etc. may be composed of a single slit, the number of slits may be increased or decreased, the arrangement of a plurality of slits may be arranged in the vertical direction, etc.
  • the shape, size, arrangement, etc. may be changed, such as to be used, to occupy a narrower range, to be one of the left and right, or to be provided in an asymmetrical position, The shape and size can be changed from others.
  • the blade portion having a plurality of blades may be single without being divided into upper and lower, or a fan of a type other than the centrifugal fan may be used.
  • Battery pawls, dust collection nozzles, etc. are omitted, the number of various bearings, screws and buttons is increased, triggers and levers are used instead of buttons, belts and pulleys are replaced with gears, screws are rivets
  • the function, arrangement, type, and number of various members may be changed as appropriate, such that the battery can be charged in a sander equipped with a battery, or a fully used battery is used.
  • the present invention can be applied not only to a sander (orbital sander) that undergoes only revolution (eccentric rotation) in the polishing section, but also to a sander (random orbital sander) that rotates with revolution, such as a polisher or a grinder. It can be applied to other portable polishing machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

La présente invention aborde le problème de la réalisation d'une machine de polissage portable qui permet la préhension de l'environnement d'une batterie depuis un côté au niveau duquel un boîtier n'est pas présent, et qui est pourvue d'un moyen pour protéger la batterie contre un contact inattendu ou similaire. La solution selon l'invention porte sur une ponceuse (1), en tant qu'exemple de cette machine de polissage portable, qui comprend : une partie de corps principal (18) dotée d'un moteur (20); une batterie (14) qui est fixée à la partie de corps principal (18) tandis que certaines des surfaces externes (surface avant, surface côté gauche, surface côté droit et surface supérieure) sont des surfaces exposées, et qui sert d'alimentation électrique pour le moteur (20); une première partie de préhension (8) qui est disposée dans une portion supérieure de la partie de corps principal (18) et qui peut être saisie; et une poignée (16) qui est disposée de manière à entourer une portion de la totalité de la surface exposée de la batterie (14) et qui peut être saisie.
PCT/JP2018/007013 2017-03-15 2018-02-26 Machine de polissage portable Ceased WO2018168421A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-050246 2017-03-15
JP2017050246 2017-03-15

Publications (1)

Publication Number Publication Date
WO2018168421A1 true WO2018168421A1 (fr) 2018-09-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/007013 Ceased WO2018168421A1 (fr) 2017-03-15 2018-02-26 Machine de polissage portable

Country Status (1)

Country Link
WO (1) WO2018168421A1 (fr)

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WO2020195868A1 (fr) * 2019-03-25 2020-10-01 日東工器株式会社 Outil électrique à batterie
CN113927428A (zh) * 2020-07-13 2022-01-14 株式会社牧田 便携式研磨机
CN113941951A (zh) * 2020-07-15 2022-01-18 株式会社牧田 便携式研磨机
US20220088763A1 (en) * 2020-09-23 2022-03-24 Andreas Stihl Ag & Co. Kg Handheld work apparatus
WO2023135031A1 (fr) * 2022-01-12 2023-07-20 Robert Bosch Gmbh Ponceuse, polisseuse et deuxième poignée
USD1004236S1 (en) 2021-07-13 2023-11-07 Techtronic Cordless Gp Buffer
US11969871B2 (en) 2021-03-26 2024-04-30 Makita Corporation Portable power tool

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JPWO2020195868A1 (ja) * 2019-03-25 2021-10-21 日東工器株式会社 バッテリ式電動工具
CN113661032A (zh) * 2019-03-25 2021-11-16 日东工器株式会社 电池式电动工具
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US11872682B2 (en) 2020-07-13 2024-01-16 Makita Corporation Portable power tool
CN113927428A (zh) * 2020-07-13 2022-01-14 株式会社牧田 便携式研磨机
CN113927428B (zh) * 2020-07-13 2025-09-30 株式会社牧田 便携式研磨机
JP7497236B2 (ja) 2020-07-13 2024-06-10 株式会社マキタ 携帯用研磨機
DE102021118055A1 (de) 2020-07-15 2022-01-20 Makita Corporation Tragbares kraftwerkzeug
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US20220088763A1 (en) * 2020-09-23 2022-03-24 Andreas Stihl Ag & Co. Kg Handheld work apparatus
US11969871B2 (en) 2021-03-26 2024-04-30 Makita Corporation Portable power tool
USD1004236S1 (en) 2021-07-13 2023-11-07 Techtronic Cordless Gp Buffer
WO2023135031A1 (fr) * 2022-01-12 2023-07-20 Robert Bosch Gmbh Ponceuse, polisseuse et deuxième poignée

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