EP4561776A1 - Scie circulaire portative - Google Patents

Scie circulaire portative

Info

Publication number
EP4561776A1
EP4561776A1 EP23745551.4A EP23745551A EP4561776A1 EP 4561776 A1 EP4561776 A1 EP 4561776A1 EP 23745551 A EP23745551 A EP 23745551A EP 4561776 A1 EP4561776 A1 EP 4561776A1
Authority
EP
European Patent Office
Prior art keywords
circular saw
hand
area
lighting
held circular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23745551.4A
Other languages
German (de)
English (en)
Inventor
Andreas Randecker
Wolfgang Spengler
Dominic Richard Ender
Jose KUNZE
Charlotte Schleifenbaum
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.)
Festool GmbH
Original Assignee
Festool GmbH
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 Festool GmbH filed Critical Festool GmbH
Publication of EP4561776A1 publication Critical patent/EP4561776A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/16—Hand-held sawing devices with circular saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/04—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/001—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade
    • B23D59/002—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade for the position of the saw blade
    • B23D59/003—Indicating the cutting plane on the workpiece, e.g. by projecting a laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/006—Accessories specially designed for sawing machines or sawing devices for removing or collecting chips
    • B23D59/0064—Accessories specially designed for sawing machines or sawing devices for removing or collecting chips by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B9/00—Portable power-driven circular saws for manual operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
    • B27G19/04—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws for manually-operated power-driven circular saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B9/00—Portable power-driven circular saws for manual operation
    • B27B9/02—Arrangements for adjusting the cutting depth or the amount of tilting

Definitions

  • the invention relates to a hand-held circular saw with a saw blade holder, which is prepared for fastening a saw blade and which can be rotated about a drive axis by means of a drive assembly, a protective cover being provided which surrounds a chip guide space, within which a saw blade receiving area is formed, which is arranged and designed in order to accommodate the saw blade in a working position, the protective cover having an outer side wall which delimits the chip guiding space on the side facing away from the drive assembly, a lighting arrangement with at least one lighting element being provided in order to illuminate a cutting area of the hand-held circular saw at least in some areas, and wherein the lighting element is arranged behind the saw blade receiving area and/or the cutting area in the feed direction of the hand-held circular saw.
  • JP2022-46093 discloses a hand-held circular saw with a protective cover surrounding a chip guide space.
  • a saw blade is accommodated in the chip guide space.
  • a lighting arrangement is arranged in the chip removal space behind the saw blade in the feed direction. The lighting arrangement emits its light transversely to the axis of rotation of the saw blade on both sides of the saw blade. This means that the saw blade, which is in the light path of the lighting arrangement, casts a shadow onto a workpiece to be machined.
  • This object is achieved in that the lighting arrangement is arranged and aligned in such a way that the light emitted by the lighting element is emitted predominantly in the feed direction of the hand-held circular saw, and in that the light emitted by the lighting element runs at least in some areas, preferably completely, in a light guide area is separated from the dust-carrying area of the chip guide space.
  • the lighting element is arranged in the feed direction behind the saw blade receiving area and/or the cutting area and therefore behind the saw blade, the entire working area of the saw blade can be illuminated as desired by the user.
  • the illumination is further improved in that the light emitted by the lighting element is emitted predominantly in the feed direction of the hand-held circular saw. This increases operating comfort even in confusing working positions.
  • the light emitted by the lighting element runs at least in some areas, preferably completely, in a light guide area that is separate from the dust-carrying area, the light path is not influenced by the chips separated from the workpiece during the machining operation. This means that operationally reliable, particularly glare-free, illumination of the work area, in particular the cutting area, is possible for a user of the hand-held circular saw even during machining.
  • the lighting element is arranged separately from the dust-carrying area of the chip guide space so that it does not become dirty.
  • the lighting element on the outside of the side outer wall illuminates the cutting area of the hand-held circular saw.
  • the cutting area is to be understood as the area into which the saw blade cuts a surface of the workpiece to be processed when the hand-held circular saw is placed on the workpiece to be processed. It is preferably provided that the cutting area on the outside of the side outer wall is illuminated there where the saw blade cuts into the workpiece.
  • an adjusting device can be provided that makes it possible to focus the lighting element on this area.
  • the protective cover has, on its outside facing away from the chip guide space, a rear area marking for identifying the rear end of the cutting area in the feed direction and a front area marking for identifying the front end of the cutting area in the feed direction, and that the light emitted by the lighting element illuminates at least a partial area, preferably at least the entire area, between the two area markings.
  • a hand-held circular saw according to the invention can be designed in such a way that a lamp holder is provided which holds the lighting element in the area of the outside facing away from the chip guide space.
  • the lighting element is located here and is easily accessible to the user.
  • it can effectively illuminate the working area of the hand-held circular saw.
  • the lamp holder has a fixing arrangement to which the lighting arrangement is coupled in an exchangeable manner, then a user can make the lighting arrangement suitably accessible if necessary. When it is no longer needed, he can dismantle it and put it aside.
  • the lighting element is held in the area of the side outer wall of the protective cover, particularly preferably attached to the side outer wall. It is preferred that the lighting element is then removably connected to the protective cover. In particular, it then does not affect sawing close to the wall in the area of the outside of the protective cover.
  • the lighting element is pivotally connected to the hand-held circular saw directly or indirectly via an interface.
  • the light beam of the lighting element can thus be suitably adjusted.
  • the lamp holder has a bearing element, which is coupled by means of a fastening piece to a support piece of the hand-held circular saw, in particular to the protective cover, that a counter-bearing element is movably connected to the bearing element, that the lighting arrangement is coupled, preferably releasably, to the counter-bearing element, and that the bearing and the counter-bearing element are an adjusting bearing to adjust the position of the lighting arrangement.
  • the lighting arrangement is adjustable, in particular pivotable, relative to the support piece of the hand-held circular saw, in particular relative to the protective cover, by at least one rotational degree of freedom.
  • an adjusting arrangement to be provided, by means of which the lighting arrangement can be adjusted translationally, in particular to achieve a suitable assignment to the protective cover.
  • the protective cover has a suction connection with a connecting piece in the feed direction behind the saw blade receiving area, that a connecting arrangement, preferably replaceable, is attached to the connecting piece, and that the connecting arrangement has a connecting element on which the Lamp holder, preferably replaceable, is attached.
  • connection arrangement has a channel section for chip removal, that the channel section carries the connecting element to which a carrier is connected at a distance from the channel section, and that the carrier has a fastening receptacle for coupling the lamp holder.
  • a particularly preferred variant of the invention provides that the drive assembly is pivotally coupled to a guide plate by means of a rear miter bearing, which is arranged behind the saw blade receiving area in the feed direction, in order to position the drive assembly relative to the guide plate
  • the miter bearing has a fixed and a movable bearing piece, the fixed bearing piece being coupled to the guide plate and the movable bearing piece being coupled to the drive assembly, and that the lighting element is attached to either the fixed or the movable bearing piece.
  • the lighting element is suitably positioned to emit the light essentially or completely in the feed direction.
  • the lighting element is housed here in a space-saving manner and it does not affect the movement space of the hand-held circular saw or only insignificantly.
  • Some hand-held circular saws are designed in such a way that their protective cover has a limiting element on its underside facing the workpiece, which is angled towards the cutting area.
  • An embodiment variant of the invention makes use of a protective cover designed in this way, with the lighting element being arranged in such a way that it emits its light in the feed direction along the limiting element. This allows the light to be brought very close to the actual position of the saw blade, thereby improving work accuracy.
  • the lighting arrangement has a lamp housing which accommodates the lighting element, that the lamp housing has or carries a fastening section by means of which it is replaceably fastened to a lamp holder, it preferably being provided that the lamp holder is on the outside of the lamp holder facing away from the chip guide space Protective cover, preferably on the outside of the side outer wall facing away from the chip guide space, then it can easily be attached to or removed from the hand-held circular saw by the user. In addition, he can use the lighting arrangement in the form of a flashlight separately.
  • the assembly of such a lighting arrangement is particularly easy if it is provided that the lamp housing is interchangeably connected to the lamp holder by means of a magnetic connection. If it is also provided that the lamp housing has a positive locking element to form a transverse Magnetic force acting positive connection between the lamp housing and the lamp holder, then the positioning of the lamp housing can be reliably maintained via the positive connection, even in the event of external mechanical stress, for example vibrations.
  • a particularly preferred variant of the invention provides that the protective cover separates the iron part of the magnetic connection from the magnetic part of the magnetic connection.
  • the magnetic part (or the iron part) can be kept hidden from view on the inside of the protective cover facing the chip guide channel (or integrated into the protective cover itself). This means that the magnetic part (or the iron part) does not have a visually disturbing effect.
  • the lamp housing carries an electrical switch in its area facing away from the guide plate of the hand-held circular saw.
  • the lamp housing holds the lighting element in its end region facing the guide plate in the area of the free end of the side outer wall and laterally next to the side outer wall.
  • a possible variant of the invention can be such that a cover is arranged within the chip guide space, which at least partially separates the light guide area from the dust-carrying area of the chip guide space, it preferably being provided that the lighting element is arranged outside the chip guide space or that the cover or a further cover element separates an area in the chip guide space within which the lighting element is arranged, such that it is arranged separately from the dust-carrying area.
  • the lighting element is integrated behind the protective cover to save space, but is nevertheless separated from the chip guide channel in order to avoid contamination of the lighting element and/or influencing the light path.
  • the protective cover in particular the side wall, has a light passage through which the light of the lighting element is passed and out
  • Chip guide space is led out.
  • the light passage is at least partially on one
  • Limiting element is provided, which is formed at the lower free end of the side wall in the form of an inward bend directed towards the chip guide space in order to be able to illuminate close to the cutting area of the saw blade.
  • a conceivable alternative to the invention is designed in such a way that the protective cover, in particular the side outer wall, has at least one fastening receptacle to which the lighting arrangement is fastened, the fastening receptacle being introduced as an opening in the protective cover or as a recess in the protective cover. This means that the lighting arrangement can be installed to save space.
  • FIG. 1 shows a typical work situation in which a user guides a hand-held circular saw along a guide rail in order to cut a workpiece
  • FIG. 2 shows a side view of a hand-held circular saw according to the invention
  • FIG 3 shows the hand-held circular saw according to Figure 2 in view of the side opposite Figure 2,
  • FIG. 4 shows a detailed representation of a hand-held circular saw according to the invention with a lighting arrangement attached to it
  • 4A shows an isolated representation and a perspective view of a connection arrangement of the hand-held circular saw according to FIG. 4,
  • FIG. 4B shows an isolated representation and a perspective view of a lighting arrangement mounted on a lamp holder
  • Figure 5 shows a symbolic view with different light areas assigned to a protective cover of the hand-held circular saw
  • Figure 6 shows an alternative design variant of a hand-held circular saw in a perspective side view
  • FIG. 6A shows a detailed representation taken from FIG. 6,
  • FIG. 7 shows a further alternative invention of a hand-held circular saw in a perspective side view and in an exploded view
  • FIG. 7A shows the representation according to FIG. 7 in the assembled state
  • Figure 8 shows a schematic detailed representation of a further alternative invention
  • Figure 9 shows a further alternative invention in a schematic representation.
  • Figure 1 shows a typical work situation in which an operator P processes a workpiece 45 lying on a work table 44 with a hand-held circular saw 10.
  • a section 46 of the workpiece 45 is cut off with the hand-held circular saw 10.
  • a guide rail 40 is placed with its underside 42 on the top of the workpiece 45.
  • the hand circular saw 10 is placed on the top of the rail 41 of the guide rail 40.
  • the hand-held circular saw 10 can be guided in a known manner on a guide element 43 of the guide rail 40, aligned in the longitudinal direction of the rail.
  • a lighting arrangement 70 is mounted on the hand-held circular saw 10, with which light can be directed to the top of the workpiece via a light guide area 24.13.
  • Figures 2 and 3 show the technical design of the hand-held circular saw 10.
  • the hand-held circular saw 10 has a guide plate 11 with which it can be placed on the guide rail 40.
  • the hand-held circular saw 10 On its downward-facing support side 12, the hand-held circular saw 10 has a guide receptacle which works together with the guide element 43 of the guide rail 40 for longitudinal guidance.
  • the guide plate 11 In the area of its upper side 13, the guide plate 11 has a holding structure with which a drive assembly 20 can be connected to the guide plate 11.
  • the drive assembly 20 has a drive motor 21 with which a saw blade holder 33 can be set in rotation.
  • a saw blade 30 can be attached to the saw blade holder 33 in an exchangeable manner.
  • Figure 2 illustrates the position of the drive axle 34, about which the saw blade 30 can be rotated.
  • the saw blade 30 On its side facing the drive motor 21, the saw blade 30 has an inside of the saw blade 31 and, on the opposite side, an outside of the saw blade 32, which can be seen in Figure 2.
  • the inside of the saw blade 31 is illustrated in Figure 3.
  • the present hand-held circular saw 10 is a plunge saw in which the drive assembly 20 with the saw blade 30 can be pivoted about a pivot axis running perpendicular to the image plane according to FIGS. 2 and 3 in order to move the saw blade 30 at least partially out of the protective cover 24 to pivot into a diving position.
  • a diving position with the saw blade 30 pivoted to the maximum is shown in Figures 2 and 3.
  • the protective cover 24 can have a connecting piece 22.1, which is preferably connected in one piece to the protective cover 24.
  • the connecting piece 22 serves as a suction connection 22.
  • a coupling piece 22.1 can be removably attached by means of a locking element 22.3.
  • the coupling piece 22.2 can be part of a suction hose of a clamping suction or a connection piece for such a suction hose. During machining, chips are sucked out of a chip guide channel 25 surrounded by the protective cover 24, which is in spatial connection with the chip guide space 24.11, via the clamping suction system.
  • the protective cover 24 forms a side outer wall 24.6, which delimits the chip guide space 24.11 on the side facing away from the drive assembly 20.
  • the outer side wall 24.6 delimits the chip guide space 24.11 in the area of the outside of the saw blade 32.
  • the side outer wall 24.6 runs essentially perpendicular to the drive axle 34.
  • the side outer wall 24.6 can have a strip-shaped limiting element 24.7.
  • the limiting element 24.7 forms an outer limiting surface 24.8, which is angled inwards towards the saw blade 30.
  • Figure 2 further shows that the side outer wall 24.6 has two markings, namely a rear area marking 24.1 and a front area marking 24.2.
  • the cutting area of the saw blade 30 is marked between the two area markings 24.1 and 24.2 for the user P.
  • the two area markings 24.1 and 24.2 therefore illustrate the rear and front saw blade limitations in the maximum immersion position of the saw blade 30.
  • FIG. 4 illustrates, there can be a recess 24.3 in the side outer wall 24.6 in the front cutting area of the saw blade 30, through which the front cutting area of the saw blade 30 can be viewed.
  • the recess 24.3 can be equipped with a removable and transparent window 24.4 be covered. It may be the case that this window 24.4 carries the front area marking 24.2.
  • the transparent window 24.4 separates a light guide area 24.13 from the dust-carrying area of the chip guide space 24.11, with it preferably being provided that a lighting element 71 is arranged outside the chip guide space 24.11, such that it is arranged separately from the dust-carrying area , in particular is separated from the chip guide space 24.11 by the transparent window 24.4.
  • the transparent window 24.4 therefore forms a light passage 24.10 in the protective cover 24, in particular the side wall 24.6, through which the light from the lighting element 71 is passed, it being preferably provided that the light passage 24.10 is provided on the limiting element 24.7, which is at the lower free end the side wall 24.6 or the transparent window 24.4 is designed in the form of an inward bend directed towards the chip guide space 24.11.
  • Figure 4 further illustrates that it can be the case that the protective cover 24 has an upper cover area 24.5, which forms the chip guide channel 25 mentioned above.
  • FIGS. 2 and 3 further illustrate that the drive assembly 20 may be pivotally connected to the guide plate 11 to enable miter cuts.
  • the drive assembly 20 is connected to the guide plate 11 by means of a rear miter bearing 26 and a front miter bearing 27.
  • the rear miter bearing 26 has a fixed bearing piece 26.1, which is connected to the guide plate 11.
  • a movable bearing piece 26.2 is connected to the fixed bearing piece 26.1 by means of a pivot bearing, the movable bearing piece 26.2 being coupled to the drive assembly 20.
  • the front miter bearing 27 is constructed in the same way and has a fixed bearing piece 27.1 and a movable bearing piece 27.2. To lock the set pivot position, the two miter bearings 26 and 27 each have a lock 26.3, 27.3.
  • the adjustment and guidance of the hand-held circular saw 10 is facilitated by means of a handle 23 of the drive assembly 20, the handle 23 also being able to have the trigger for activating the drive motor 21 in the usual manner.
  • FIGS. 4-4b illustrate that a lighting arrangement 70 can be interchangeably connected to the hand-held circular saw 10.
  • the lighting arrangement 70 has a lighting element 71 which is housed in a lamp housing 75.
  • the lighting arrangement 70 can be connected to the hand-held circular saw 10 in an interchangeable manner.
  • a connection arrangement 50 is used to attach the lighting arrangement 70.
  • the connection arrangement 50 is connected to the hand-held circular saw 10.
  • a lamp holder 60 can be attached to the connection arrangement 50 in an interchangeable manner. It may be the case that the lamp holder 60 has a further interface to which the lamp housing 75 is attached in a replaceable manner.
  • connection arrangement 50 has a carrier 57 which has a fastening receptacle 58.
  • a fastening piece 61 of the lamp holder 60 can be fastened to the carrier 57 by means of a fastening element 62.
  • the fastener 62 may include a screw that is screwed into the fastening receptacle 58.
  • a pivot bearing In order to enable adjustment of the lamp holder 60 relative to the connecting arrangement 50, a pivot bearing, a rotary bearing, a linear guide or a combination of a pivot or rotary bearing with a linear guide can be provided.
  • a pivot bearing is used, the pivot axis being formed by the central longitudinal axis of the fastening element 62 designed as a fastening screw.
  • the lamp holder 60 can be adjusted in a locked manner relative to the connection arrangement 50.
  • the connection arrangement 50 has a grid 59.
  • a counter-locking element of the lamp holder 60 engages in the grid 59 in order to enable the locked adjustment.
  • Figure 4b further illustrates that it can also be the case that the lamp holder 60 has a bearing element 63, which is pivotally coupled to a counter-bearing element 64.
  • the counter bearing element 64 carries the lamp housing 75 directly or indirectly and serves to pivotably adjust the lighting arrangement 70.
  • the lighting arrangement 70 is adjusted about two pivot axes (two rotational degrees of freedom). can to suitably focus the light emitted by the lighting arrangement 70.
  • a fixing arrangement 65 is used to fasten the lighting arrangement 70. It is preferably the case that the fixing arrangement 65 is attached to the counter bearing element 64 and is designed to produce a detachable connection to the lamp housing 75. In the present exemplary embodiment, the fixing arrangement 65 forms a clamp.
  • connection arrangement 50 forms a channel section 51.
  • This channel section 51 can be detachably connected to the connecting piece 22.1, as illustrated in FIG. 4a.
  • the locking element 22.3 can be used to connect the channel section 51 to the connecting piece 22.1.
  • the channel section 51 has a plug attachment 52 which can be inserted into the connecting piece 22.1. This insertion movement is carried out using a stop 53 of the channel section 51 limited. On the side of the stop 53 opposite the plug-in extension 52, a connector 54 is provided, which can be used to couple the coupling piece 22.2.
  • connection arrangement 50 has a positive locking element, which works together with a counter-positive locking element of the coupling piece 22.2.
  • the form-fitting element can be designed in the form of a toothing 55, which is introduced into the front end of the nozzle 54.
  • Figure 4a further illustrates that the connecting arrangement 50 carries a connecting element 56, to which the carrier 57 is attached, preferably formed in one piece. It may be the case that the connecting element 56 is integrally formed on the stop 53.
  • connection arrangement 50 is attached to the hand-held circular saw 10 as described above.
  • the lamp holder 60 can then be fastened to the carrier 57 of the connection arrangement 50 using the fastening element 62.
  • the lighting arrangement 70 is attached by means of the fixing arrangement 65. Then the user P can suitably align the light cone generated by the lighting arrangement 70 by pivoting the lighting arrangement 70 in order to illuminate the sawing area.
  • the lighting arrangement 70 is arranged behind the saw blade 30 in the feed direction of the hand-held circular saw 10.
  • the light emitted by the lighting arrangement 70 is essentially guided in the feed direction V, so that it at least partially illuminates the sawing area between the two area markings 24.1 and 24.2.
  • the user P can adjust the lighting arrangement 70 so that the area around the front area marking 24.2 is sufficiently illuminated.
  • Figure 5 illustrates a section through the protective cover 24 perpendicular to the support side 12 of the guide plate 11 and through the drive axle 34.
  • different lighting areas L1, L2, L3 can be formed depending on the arrangement of the lighting arrangement 70 in relation to the side outer wall 24.6.
  • Particularly suitable lighting areas according to the invention form the lighting areas L1 and L2.
  • the lighting area L1 is limited by the outer side wall 24.6 and the surface of the workpiece 45 to be machined.
  • the lighting area L2 is limited by the workpiece surface and the boundary surface 24.8 of the boundary element 24.7 and extends up to or almost up to the side of the saw blade receiving area 24.12 facing the side outer wall 24.6 or up to the outside of the saw blade 32.
  • the lighting area L3 is less suitable because it does not illuminate the workpiece surface in the cutting area.
  • FIGS. 6 and 6a show an exemplary embodiment which is used to illuminate in particular the lighting area L2 and partially the lighting area L1.
  • the same components are marked with the same reference numerals in these drawings, so that reference is made to the above statements to avoid repetition.
  • the lighting arrangement 70 is connected to a part of the rear miter bearing 26.
  • the lighting arrangement 70 is preferably connected to the movable bearing piece 26.2, so that it is pivoted with the protective cover 24 when the miter angle of the hand-held circular saw 10 is adjusted.
  • the illustrations illustrate that the lighting arrangement 70 is arranged, preferably at least partially, within the area which is formed by the extension of the side outer wall 24.6 and the boundary surface 24.8 of the boundary element 24.7.
  • the lighting element 71 sends its light in Feed direction V or essentially in the feed direction V in order to illuminate the lighting area L2 and possibly also partially the lighting area L1.
  • FIGS. 7 and 7a show an exemplary embodiment which is used to illuminate the lighting areas L1 and L2 in particular.
  • the same components are marked with the same reference numerals in these drawings, so that reference is made to the above statements to avoid repetition.
  • a lighting arrangement 70 can be interchangeably connected to the protective cover 24, preferably to the side outer wall 24.6 of the protective cover 24.
  • the lighting arrangement 70 has a fastening section 76, which can be connected to the protective cover 24 in an interchangeable manner.
  • the lighting arrangement 70 has a lamp housing 75 in which a lighting element 71 is housed. Furthermore, it can be the case that a power supply, in particular a battery, is arranged in the lamp housing 75 in order to supply the lighting element 71 with power.
  • a power supply in particular a battery
  • the lamp housing 75 has a contact surface 72 in the area of a mounting side, which is arranged and designed to be placed on the outside of the side outer wall 24.6. It can be the case that in the area of the contact surface 72 there is a positive locking element 73 which comes into contact with a counter-positive locking element of the protective cover 24 in order to block a displacement of the lamp housing 75 in the plane of the outside of the side outer wall 24.6. It can be the case that the positive locking element 73 is designed as a recess recessed in the contact surface 72.
  • the counter-positive locking element can be formed by an elevation which protrudes beyond the outside of the side outer wall 24.6.
  • a magnetic connection can be used to connect the lighting arrangement 70 to the protective cover 24.
  • the lamp housing 75 may include a magnet 74 (or iron member) that cooperates with an iron member (or magnet) of the protective cover 24 to form the magnetic connection.
  • the lamp housing 75 forms a cover section on its top, which is used with a switch 77 to switch the lighting element 71 on or off.
  • the lamp housing 75 carries the lighting element 71 at its end facing the guide plate 11. It is particularly preferred that the lamp housing 75 holds the lighting element 71 in the area of the boundary surface 24.8, so that the lighting area L2 can also be at least partially illuminated, as shown in FIG. 7a with the light guide area 24.13 symbolically shown there.
  • This drawing also shows that the arrangement of the switch 77 on the lamp housing 75 on the side facing away from the guide plate 11 is advantageous since the user P can activate the lighting element 71 away from the cutting area.
  • FIG 8 shows a further embodiment variant of the invention.
  • a lighting arrangement 70 is shown, which is used on a hand-held circular saw 10 according to Figures 1 - 5 and can preferably be releasably attached. Reference is therefore made to the above statements regarding the design of the hand-held circular saw 10. 8 shows, the lighting arrangement 70 has a lamp housing 75, which carries at least one protruding positive-locking element 73.
  • the protective cover 24, preferably the outer side wall 24.6, has one or more fastening receptacles 24.9, which can in particular be designed as openings.
  • the form-fitting element 73 and the fastening receptacle 24.9 preferably form a detachable connection so that a user P can optionally install the lighting arrangement 70.
  • the fastening receptacle 24.9 and the positive locking element 73 form a locking connection that simplifies assembly and disassembly.
  • the positive locking element 73 has a contact surface 72 which prevents the lamp housing 75 from being offset in the direction of the plane formed by the outside of the side outer wall 24.6.
  • Figure 9 shows a further exemplary embodiment of the invention that can be used on a hand-held circular saw 10 according to Figures 1-5. To avoid repetition, reference is made to the above statements on the structure of the hand-held circular saw 10.
  • a cover 78 is arranged within the chip guide space 24.11. This separates the light guide area 24.13 from the dust-carrying area of the chip guide space 24.11 at least in some areas. It is preferably the case that the cover 78 also separates the lighting element 71 and in particular the entire lighting arrangement 70 from the chip guide space 24.11. This means that the lighting element 71 is also arranged in a protected manner outside the chip guide space 24.11.
  • the drawing shows that it can be the case that the cover 78 is attached to the inside of the side outer wall 24.6.
  • Figure 9 illustrates that the lighting element 71 sends its light through the light guide area 24.13 surrounded by the cover 78.
  • the protective cover 24 has a light passage 24.10, which is preferably designed as an opening on the limiting element 24.7. Through this light passage 24.10, the light of the lighting element 71 shines into the area of the outside of the protective cover 24, and is preferably guided into the lighting area L2 and/or into the lighting area L1 in order to generate light on the top of a workpiece 45.
  • the lighting arrangement 70 is arranged and aligned such that the light emitted by the lighting element 71 is emitted predominantly in the feed direction V of the hand-held circular saw 10.
  • the light emitted by the lighting element 71 runs at least in some areas, preferably completely, in a light guide area 24.13, which is separated from the dust-carrying area of the chip guide space 24.11.
  • the lighting arrangement 70 holds the lighting element 71 behind the cutting area in the feed direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Abstract

L'invention concerne une scie circulaire portative (10) comprenant un support de lame de scie (33) qui est conçu pour fixer une lame de scie (30) et qui peut tourner autour d'un axe d'entraînement (34) au moyen d'un ensemble d'entraînement (20). Il est prévu un couvercle de protection (24) qui entoure une zone de guidage de copeaux (24.11), à l'intérieur de laquelle est formée une zone de réception de lame de scie (24.12) qui est agencée et conçue pour recevoir la lame de scie (30) dans une position de travail, le couvercle de protection (24) comprenant une paroi externe latérale (24.6) qui délimite la zone de guidage de copeaux (24.11) sur la face opposée à l'ensemble d'entraînement (20), et un ensemble d'éclairage (70) avec au moins un élément d'éclairage (71) est prévu afin d'éclairer la région de coupe de la scie circulaire portable (10) au moins dans certaines régions. L'élément d'éclairage (71) est disposé derrière la zone de réception de lame de scie (24.12) dans la direction d'avance (V) de la scie circulaire portative (10). Afin d'améliorer le confort d'utilisation, l'ensemble d'éclairage (70) est agencé et conçu de telle sorte que la lumière émise par l'élément d'éclairage (71) est émise en grande partie dans la direction d'avance (V) de la scie circulaire portable (10), en particulier sans produire d'éblouissement pour un utilisateur de la scie circulaire portable (10), et la lumière émise par l'élément d'éclairage (71) se propage dans une région de guidage de lumière (24.13), au moins dans certaines régions, de préférence entièrement dans la région de guidage de lumière, ladite région de guidage de lumière étant séparée de la région de guidage de sciure de la zone de guidage de copeaux (24.11).
EP23745551.4A 2022-07-29 2023-07-27 Scie circulaire portative Pending EP4561776A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22187853.1A EP4311617A1 (fr) 2022-07-29 2022-07-29 Machine d'usinage guidée à la main
PCT/EP2023/070850 WO2024023223A1 (fr) 2022-07-29 2023-07-27 Scie circulaire portative

Publications (1)

Publication Number Publication Date
EP4561776A1 true EP4561776A1 (fr) 2025-06-04

Family

ID=82786551

Family Applications (3)

Application Number Title Priority Date Filing Date
EP22187853.1A Pending EP4311617A1 (fr) 2022-07-29 2022-07-29 Machine d'usinage guidée à la main
EP23748514.9A Pending EP4561777A1 (fr) 2022-07-29 2023-07-27 Module lumineux amovible
EP23745551.4A Pending EP4561776A1 (fr) 2022-07-29 2023-07-27 Scie circulaire portative

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP22187853.1A Pending EP4311617A1 (fr) 2022-07-29 2022-07-29 Machine d'usinage guidée à la main
EP23748514.9A Pending EP4561777A1 (fr) 2022-07-29 2023-07-27 Module lumineux amovible

Country Status (4)

Country Link
US (2) US20240033839A1 (fr)
EP (3) EP4311617A1 (fr)
CN (3) CN119604378A (fr)
WO (2) WO2024023224A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211680290U (zh) * 2019-12-31 2020-10-16 南京德朔实业有限公司 电圆锯

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CA2132010A1 (fr) * 1992-03-13 1993-09-16 Lance H. Waite Indicateur de ligne de coupe pour materiel de decoupage electrique
US5461790A (en) * 1994-02-16 1995-10-31 Olstowski; Franek Circular saws with laser guides for more precise movement during cutting
AU2006220396B2 (en) * 2001-05-18 2009-03-12 Techtronic Industries Co., Ltd. Miter saw having a light beam alignment system
US7096587B2 (en) * 2001-09-07 2006-08-29 Hitachi Koki Co., Ltd. Portable circular power saw with optical alignment
US20050247178A1 (en) * 2004-04-15 2005-11-10 Hetcher Jason D Power tool having an elastomeric material
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CA2542570A1 (fr) * 2005-04-13 2006-10-13 Black & Decker Inc. Fendeur de bois
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JP4656420B2 (ja) * 2006-02-22 2011-03-23 日立工機株式会社 携帯用丸のこ
DE202006004715U1 (de) * 2006-03-22 2006-06-08 Hans Einhell Ag Führungshilfe für Schneidwerkzeuge
US20090046448A1 (en) * 2007-08-15 2009-02-19 Hung-He Huang Rotatable illumination device on hand tools
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CN207900362U (zh) * 2017-04-21 2018-09-25 南京德朔实业有限公司 锯
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US11027392B1 (en) * 2020-04-27 2021-06-08 Techtronic Cordless Gp Compact multi-material cut-off tool
CN212652811U (zh) * 2020-08-21 2021-03-05 南京德朔实业有限公司 往复锯
CN114074199B (zh) * 2020-08-21 2024-11-19 南京泉峰科技有限公司 往复锯
JP2022046093A (ja) 2020-09-10 2022-03-23 株式会社マキタ 携帯用加工機

Also Published As

Publication number Publication date
CN119604377A (zh) 2025-03-11
US20260042158A1 (en) 2026-02-12
CN117464079A (zh) 2024-01-30
EP4561777A1 (fr) 2025-06-04
CN119604378A (zh) 2025-03-11
US20240033839A1 (en) 2024-02-01
WO2024023224A1 (fr) 2024-02-01
EP4311617A1 (fr) 2024-01-31
WO2024023223A1 (fr) 2024-02-01

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