EP4182117A1 - Ponceuse comprenant un guide de feuille et une pince - Google Patents

Ponceuse comprenant un guide de feuille et une pince

Info

Publication number
EP4182117A1
EP4182117A1 EP21893125.1A EP21893125A EP4182117A1 EP 4182117 A1 EP4182117 A1 EP 4182117A1 EP 21893125 A EP21893125 A EP 21893125A EP 4182117 A1 EP4182117 A1 EP 4182117A1
Authority
EP
European Patent Office
Prior art keywords
guide
baseplate
base
base portion
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21893125.1A
Other languages
German (de)
English (en)
Other versions
EP4182117B1 (fr
EP4182117A4 (fr
Inventor
Ling Yan ZHU
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.)
Techtronic Cordless GP
Original Assignee
Techtronic Cordless GP
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 Techtronic Cordless GP filed Critical Techtronic Cordless GP
Publication of EP4182117A1 publication Critical patent/EP4182117A1/fr
Publication of EP4182117A4 publication Critical patent/EP4182117A4/fr
Application granted granted Critical
Publication of EP4182117B1 publication Critical patent/EP4182117B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B24B23/046—Clamping or tensioning means for abrasive sheets
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/04—Rigid drums for carrying flexible material

Definitions

  • the present invention relates to power tools, and more particularly to battery-powered sanders.
  • Abrading machines generally include a housing, a motor supported by the housing coupled to a drive shaft driven for rotation about a drive axis, and an assembly or base for mounting a pad or sandpaper for abrading a work surface.
  • a pad or sandpaper for abrading a work surface.
  • such an abrading machine can be used for coarse abrading work or for fine abrading work.
  • the invention provides a base for a sheet sander including a baseplate and a guide.
  • the baseplate has an upper side and a lower side opposite the upper side, and the upper side defines a guide mount.
  • the guide is coupled to the guide mount adjacent an edge of the baseplate, and the upper side of the baseplate and the guide cooperatively define a space that receives and temporarily holds an end of a sanding sheet.
  • the base also includes a clamp that is coupled to the baseplate and that is movable between an unclamped position to permit attachment of the sanding sheet to the baseplate via the guide, and a clamped position to secure the sanding sheet to the baseplate. The clamp is in the clamped position after the sanding sheet is positioned in the space.
  • the guide includes a base portion that is coupled to the baseplate and a flange that extends from the base portion.
  • the base portion lies in a plane and the flange is oriented at a non-zero angle relative to the base portion.
  • the guide mount defines a post and the base portion is attached to the baseplate via the post, and an end of the base portion defines a hook extending below an uppermost portion of the post.
  • the hook defines a clamp pivot that permits the clamp to move between the unclamped position and the clamped position.
  • the guide includes a transition disposed between the base portion and the flange and extending below the plane of the base portion.
  • the flange controls movement of the end of the sander sheet toward the transition, and the transition frictionally retains the sander sheet between the guide mount and the guide.
  • the space between the guide and the upper side of the baseplate tapers narrower from an end of the flange toward the base portion.
  • the invention provides a base for a sheet sander including a baseplate that has an upper side defining a first guide mount located adjacent a first corner of the baseplate, and a second guide mount located adjacent a second corner of the baseplate. Each of the first corner and the second corner sharing an edge of the baseplate.
  • the base also includes a first guide, a second guide, and a clamp.
  • the first guide is coupled to the first guide mount adjacent the edge of the baseplate, and the upper side of the baseplate and the first guide cooperatively define a first tapered space, and the first guide receives and temporarily holds an end of the sanding sheet in the first tapered space.
  • the second guide is coupled to the second guide mount adjacent the edge of the baseplate, and the upper side of the baseplate and the second guide cooperatively define a second tapered space.
  • the second guide receives and temporarily holds an end of the sanding sheet in the second tapered space.
  • the clamp is coupled to the baseplate and has an unclamped position and a clamped position. The unclamped position permits attachment of the sanding sheet to the baseplate via the first guide and the second guide, and the clamped position secures the sanding sheet to the baseplate.
  • the first guide includes a first base portion that is coupled to the baseplate and that lies in a plane, and a first flange that extends from the first base portion and is oriented at a non-zero angle relative to the first base portion.
  • the second guide includes a second base portion that is coupled to the baseplate and that lies in a plane, and a second flange that extends from the second base portion and is oriented at a non-zero angle relative to the second base portion.
  • the first guide mount defines a post and the first base portion is attached to the post, and an end of the first base portion defines a hook extending below an uppermost portion of the post.
  • the hook defines a clamp pivot that permits the clamp to move between the unclamped position and the clamped position.
  • the first guide includes a first transition disposed between the first base portion and the first flange and extending below the plane of the first base portion
  • the second guide includes a second transition disposed between the second base portion and the second flange and extending below the plane of the second base portion.
  • Each of the first flange and the second flange controls movement of the end of the sander sheet toward the first transition and the second transition, respectively, and each of the first transition and the second transition is configured to frictionally retain the sander sheet between the first and second guide mounts and the first and second guides, respectively.
  • FIG. 1 is a perspective view of a sheet sander embodying the invention.
  • FIG. 2 is an exploded view of the sheet sander including a housing and a base assembly.
  • FIG. 3 is a perspective view of the base assembly including a baseplate, clamps, and sheet guides.
  • FIG. 4 is a top view of the base assembly of FIG. 3.
  • FIG. 5 is an end view of the base assembly of FIG. 3.
  • FIG. 6A is a side view of the base assembly of FIG. 3.
  • FIG. 6B is another side view of the base assembly of FIG. 3.
  • FIG. 7 is a perspective view of a portion of the base assembly including the clamps, the guides, and a sander sheet held by the guides prior to clamping.
  • FIG. 8A is a perspective view of one guide.
  • FIG. 8B is a perspective view of the other guide.
  • FIG. 9A is a side view of the guide of FIG. 8A.
  • FIG. 9B is a side view of the guide of FIG. 8B.
  • FIG. 10A is a rear view of the guide of FIG. 8A.
  • FIG. 10B is a rear view of the guide of FIG. 8B.
  • FIG. 11A is a top view of the guide of FIG. 8A.
  • FIG. 11B is a top view of the guide of FIG. 8B.
  • FIGS. 1 and 2 illustrate an exemplary sander 10 embodying the invention and including a housing 15, a battery pack 20, and a base 25 that supports a sander sheet 26 (FIG. 7) .
  • the housing 15 includes a handle portion 27 that is shaped to be grasped by a hand of a user.
  • the sander 10 may include a wired power source instead of the battery pack 20.
  • the sander 10 includes an electric motor that rotates a drive shaft that extends along a rotational axis and that rotates in response to torque from the electric motor to cause the base 25 to move rapidly in an abrading motion by transferring power through the output shaft (not shown) .
  • the battery pack 20 is removably attached to the housing 15 via a battery receptacle 28 to electrically power the motor.
  • a dust collection portion may be integrated with the housing 15 to facilitate collection of dust during operation.
  • the sander 10 also includes a pushbutton switch 29 to power the sander 10 on and off.
  • the base 25 is attached to an underside of the housing 15 and is operatively coupled to the drive shaft.
  • the base 25 includes an upper baseplate 30 and a lower baseplate 35 that is attached to the upper baseplate 30.
  • the upper baseplate 30 and the lower baseplate 35 may be a monolithic structure such that the base has a single baseplate.
  • the upper baseplate 30 defines an upper side of the base 25, and the lower baseplate 35 defines a lower side of the base 25.
  • the upper and lower baseplates 30, 35 cooperatively support the sander sheet 26 (FIG. 7) , and the lower side faces a workpiece (not shown) during operation of the sander 10.
  • the upper baseplate 30 and the lower baseplate 35 cooperatively define corners 36 with two end edges 37a, 37b, and two side edges 38a, 38b.
  • the upper baseplate 30 has a lip 39 extending along each of the end edges 37a, 37b.
  • the upper baseplate 30 also includes a first guide mount that is located adjacent a first corner 36a, and a second guide mount 45 is located adjacent a second corner 36b that shares the end edge 37a with the first corner 36a. It will be appreciated that the upper baseplate 30 may also include guide mounts on the corners at the end edge 37b. Referring to FIGS. 3, 6A, and 6B, the first guide mount 40 is defined by a post 46 and the second guide mount 45 is defined by a post 47.
  • each post 46, 47 extends upward from the upper baseplate 30.
  • Each illustrated guide mount 40, 45 also has a sloped portion 48a, 48b facing the end edge 37a, and a hole 49a, 49b.
  • Clamp channels 53a, 53b extend adjacent the lips 39 along respective end edges 37a, 37b.
  • the base 25 also includes a first clamp 53, a second clamp 55, a first guide 60, and a second guide 65.
  • the first clamp 53 extends along one end edge 37a and one side edge 38a
  • the second clamp 55 extends along the other end edge 37b and the other side edge 38b to semi-permanently clamp or secure ends of the sander sheet 26 to the base 25 for sanding operation (e.g., until the sander sheet 26 needs to be replaced) .
  • the clamps 53, 55 have the same shape and include a clamp connector end 57 that pivotably couples to the upper baseplate 30 (e.g., the clamp 53 pivotably couples to the post 46) .
  • the clamps 53, 55 also include a clamp arm 58 that is disposed in the clamp channel 50a or 50b, and a clamp grip 59 on an end distal to the clamp connector end 57.
  • the first guide 60 is coupled to the post 46 adjacent the end edge 37a at the corner 36
  • the second guide 65 is coupled to the post 47 adjacent the end edge 37a at the adjacent corner 36.
  • Each illustrated guide 60, 65 is attached to the respective posts 46, 47 by a fastener 67 (e.g., rivet, screw, bolt, etc. ) that extends through respective guide holes 68, 69 in the guides 60, 65.
  • a fastener 67 e.g., rivet, screw, bolt, etc.
  • the guides 60, 65 may be welded to the upper baseplate 30 or otherwise monolithically formed with the upper baseplate 30.
  • the first guide 60 includes a first base portion 70 that is coupled to the post 46 and lies in a plane 72, and a first flange 75 that extends from the first base portion 70 and that is oriented at a non-zero angle relative to the first base portion 70 (i.e. relative to the plane 72) .
  • a first transition 77 is disposed between the first base portion 70 and the first flange 75, and the transition 77 extends from the first base portion 70 below the plane 72.
  • An end of the first base portion 70 has a hook 78 to assist with maintaining alignment of the first guide 60 on the post 46 so that the first guide 60 can receive an end of the sander sheet 26.
  • the second guide 65 includes a second base portion 80 that is coupled to the post 47 and lies in a plane 82, and a second flange 85 that extends from the second base portion 80 and that is oriented at a non-zero angle relative to the second base portion 80 (i.e. relative to the plane 82) .
  • a second transition 87 is disposed between the second base portion 80 and the second flange 85, and the transition 87 extends from the second base portion 80 below the plane 82.
  • An end of the second base portion 80 has a hook 90 defining a clamp pivot that complements the pivotal movement of the clamp 53 provided by the post 46.
  • the second guide 65 may include a support pin recess 95 that is engaged by a support pin 100 on the upper baseplate 30 to inhibit rotation or twisting of the second guide 65.
  • the first guide 60 and the upper side of the baseplate 30 cooperatively define a first space 105 that receives the end of the sander sheet 26.
  • the second guide 65 and the upper side of the baseplate 30 cooperatively define a second space 110.
  • each space 105, 110 is defined as a tapered space.
  • the first guide 60 and the second guide 65 cooperatively receive and temporarily hold the end of the sanding sheet in place on the base 25 so that the clamps 53, 55 can thereafter be actuated from an unclamped position (shown in FIGS. 3-7) to a clamped position (shown in FIG. 1) to secure the sander sheet 26 to the base 25.
  • an unclamped position shown in FIGS. 3--7
  • a clamped position shown in FIG. 1
  • a user slides an end of the sander sheet 26 into the spaces 105, 110 while the clamp arms 58 (and the clamps 53, 55 generally) are in the unclamped position. That is, the end of the sander sheet 26 is slid below the clamp arms 58.
  • the second clamp 55 may secure one end of the sander sheet 26 before aligning the other end of the sander sheet 26 relative to the guides 60, 65.
  • each of the first flange 75 and the second flange 85 controls movement of the end of the sander sheet 26 toward the first transition 77 and the second transition 87, respectively.
  • Each of the first transition 77 and the second transition 87 frictionally retains the sander sheet between the first and second guide mounts 40, 45 and the first and second guides 60, 65, respectively.
  • the first clamp 53 can be maneuvered from the unclamped position to the clamped position to secure the sander sheet 26 to at the end edge 37a. If the second clamp 55 has not been secured in the clamped position, the user may also maneuver the second clamp 55 to secure the other end of the sheet 26 along the end edge 37b.
  • the lips 39 facilitate retention and tightening of the sheet 26 so that the sheet 26 is tightly held against the lower side of the lower baseplate 35. Securing the clamps 53, 55 in the clamped position semi-permanently locks the sheet 26 in place.
  • the guides 60, 65 and the clamps 53, 55 provide a two-step sheet installation process that facilitates i) alignment of and holding the sheet 26 on the base 25, and ii) secure attachment of the sheet 26 to the base 25 so that the sander 10 can be used on a workpiece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Base (25) pour une ponceuse à feuille (10) comprenant une plaque de base (30) et un guide (60, 65). La plaque de base (30) a un côté supérieur et un côté inférieur opposé au côté supérieur, et le côté supérieur définit un support de guidage (40, 45). Le guide (60, 65) est couplé au support de guidage (40, 45) adjacent à un bord de la plaque de base (30), et le côté supérieur de la plaque de base (30) et le guide (60, 65) définissent ensemble un espace qui reçoit et maintient temporairement une extrémité d'une feuille de ponçage (26). La base (25) comprend également une pince (53, 55) qui est couplée à la plaque de base (30) et qui est mobile entre une position non serrée pour permettre la fixation de la feuille de ponçage (26) à la plaque de base (30) par l'intermédiaire du guide (60, 65), et une position serrée pour fixer la feuille de ponçage (26) à la plaque de base (30). La pince (53, 55) est dans la position serrée une fois la feuille de ponçage (26) positionnée dans l'espace.
EP21893125.1A 2021-10-01 2021-10-01 Ponceuse comprenant un guide de feuille et une pince Active EP4182117B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/122495 WO2023050451A1 (fr) 2021-10-01 2021-10-01 Ponceuse comprenant un guide de feuille et une pince

Publications (3)

Publication Number Publication Date
EP4182117A1 true EP4182117A1 (fr) 2023-05-24
EP4182117A4 EP4182117A4 (fr) 2023-07-19
EP4182117B1 EP4182117B1 (fr) 2024-08-28

Family

ID=84950921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21893125.1A Active EP4182117B1 (fr) 2021-10-01 2021-10-01 Ponceuse comprenant un guide de feuille et une pince

Country Status (3)

Country Link
EP (1) EP4182117B1 (fr)
CN (1) CN218363903U (fr)
WO (1) WO2023050451A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893177A (en) * 1958-11-19 1959-07-07 American Lincoln Corp Surfacing machine
US4091576A (en) * 1976-02-06 1978-05-30 Hutchins Alma A Retention of abrasive sheet material on an abrading tool
DE3403963A1 (de) * 1984-02-04 1985-08-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einrichtung zum festklemmen bzw. freigeben des schleifmitteltraegers an bzw. von der schwingplatte eines handschwingschleifers
IT1298433B1 (it) * 1997-02-27 2000-01-10 Bosch Gmbh Robert Utensile elettrico portatile in particolare smerigliatrice
JP2000254852A (ja) * 1999-03-08 2000-09-19 Ryobi Ltd サンダーのクランプ装置
DE10139548A1 (de) * 2001-08-10 2003-02-20 Bosch Gmbh Robert Schleifhandwerkzeugmaschine
DE10139547A1 (de) * 2001-08-10 2003-02-20 Bosch Gmbh Robert Schleifhandwerkzeugmaschine
DE10353682A1 (de) * 2003-11-17 2005-06-16 Robert Bosch Gmbh Handschleifwerkzeug
CN201493733U (zh) * 2009-08-03 2010-06-02 南京德朔实业有限公司 砂光机
CN105922107A (zh) * 2016-06-29 2016-09-07 苏州博来喜电器有限公司 应用于砂光机中的底板组件
CN110944794B (zh) * 2017-08-04 2022-07-12 苏州宝时得电动工具有限公司 打磨工具及其主体部和打磨部

Also Published As

Publication number Publication date
EP4182117B1 (fr) 2024-08-28
CN218363903U (zh) 2023-01-24
EP4182117A4 (fr) 2023-07-19
WO2023050451A1 (fr) 2023-04-06

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