TABLE SAW AND SPLINTER GUARD

Description

[0001] The invention relates to a table saw, preferably a circular table saw, with a support structure which can be placed on a base and on the upper side of which a workpiece support plate is provided, and with a saw blade which projects upwards above the workpiece support plate.

[0002] From the document DE 20 2004 00912 3 U1 a table saw is known which comprises a worktop with a support surface, a housing which supports the worktop, and a machine frame arranged below the worktop and connected thereto for receiving a motor and a saw blade.

[0003] DE 298 09 921 U1 describes a guide plate designed to rest on a workpiece with its underside. A handheld power tool, such as a hand-held circular saw, is placed on the top of the guide plate and moved longitudinally along the guide plate. The guide plate has a base made of a suitable metal. The base supports a guide bar that rests on the workpiece during use. The guide bar and the guide lip formed by it prevent splintering of the workpiece material.

[0004] US Patent No. 1,590,974 A describes a weatherstrip for attaching to doors and window frames. The weatherstrip comprises a longitudinal bead and a V-shaped longitudinal retaining part with which the weatherstrip can be attached to the door or window frame.

[0005] US 2009 / 0007743 A1 discloses a table saw comprising a base having a spindle for interchangeably mounting two or more saw blades, a rail attached to the base, a support slidably mounted on the rail to support a workpiece, a tabletop disposed on the base and having an opening facing the saw blades, and two or more inserts that can interchangeably engage the opening of the tabletop and have a recess for fitting saw blades of different widths or thicknesses. The rail is preferably slidably and adjustably mounted on the base.

[0006] It is an object of the invention to modify a table saw of the type mentioned at the outset in such a way that the risk of damage to the surface of a workpiece during handling and processing of the workpiece can be reduced with the simplest possible design of the table saw.

[0007] The object is achieved by the features specified in the characterizing part of claim 1. According to the invention, the workpiece support plate is mounted displaceably in the sawing direction relative to the support structure and the saw blade and has a splinter protection element arranged on a side of the workpiece support plate facing the saw blade, which is guided past the saw blade when the workpiece support plate is displaced.

[0008] The workpiece support plate, which is mounted so that it can be moved relative to the sawblade, makes it possible to move a workpiece placed on the workpiece support plate closer to the sawblade and / or into the sawblade. This prevents the workpiece from having to be pushed over the workpiece support plate, which can reduce the risk of surface damage, such as scratches, on the side of the workpiece resting on the workpiece support plate.

[0009] The splinter guard element on the workpiece support plate also reduces the risk of damage to the workpiece due to tearing during sawing. Because the splinter guard element is located on the movable workpiece support plate and thus moves with the movable workpiece support plate, it ensures that splinter protection is provided between the workpiece support plate and the saw blade, even in different positions of the workpiece support plate.

[0010] The fact that the splinter guard is located directly on the sliding workpiece support plate results in a simpler design of the table saw. In particular, this measure eliminates the need for a dedicated, fixed mounting structure for the splinter guard between the saw blade and the workpiece support plate. Consequently, the advantage of attaching the splinter guard to the sliding workpiece support plate is a simple design.

[0011] Advantageous further developments of the invention are the subject of the subclaims.

[0012] The splinter protection element preferably comprises a splinter protection lip, in particular a splinter protection rubber lip. The splinter protection lip is expediently elongated or strip-shaped. A splinter protection element designed in this way can ensure sawing with as little tearing as possible.

[0013] In a preferred embodiment, the splinter guard extends in front of the saw blade, expediently in such a way that the splinter guard is cut to size by sliding the workpiece support plate away from the saw blade when the table saw is put into operation. This design of the splinter guard allows the splinter guard to be precisely cut to size, so that later in operation it sits exactly against the saw blade, thus enabling tear-free sawing of the workpiece.

[0014] In a preferred embodiment, the splinter protection element is removably attached to the workpiece support plate. In particular, the splinter protection element is attached to the workpiece support plate in such a way that it can be manually removed from the workpiece support plate, preferably without loosening a screw or other fastening element. The splinter protection element and the workpiece support plate are expediently designed such that the splinter protection element can be reversibly attached to and / or removed from the workpiece support plate. This design allows the splinter protection element to be replaced very easily.

[0015] Conveniently, a groove is provided on the side of the workpiece support plate facing the saw blade, which accommodates a section of the splinter guard. Conveniently, the groove opens at a front and / or rear side of the workpiece support plate. The splinter guard can thus be easily pulled out of the groove and is therefore particularly easy to remove from the workpiece support plate.

[0016] According to a preferred embodiment, the splinter protection element is elongated. The splinter protection element expediently extends over the entire side of the workpiece support plate facing the saw blade. In particular, the length and arrangement of the splinter protection element are selected such that, in every position of the workpiece support plate in which the workpiece support plate is located in the area of ​​the saw blade and sawing of a workpiece placed on the workpiece support plate is possible, a section of the splinter protection element is located between the workpiece support plate and the saw blade, so that the workpiece can be sawn without tearing even in different positions of the workpiece support plate.

[0017] The splinter protection element preferably has an arrow-shaped profile. The arrow-shaped profile expediently has an arrowhead section and a shaft section. The shaft section is accommodated in particular in the groove provided on the workpiece support plate. The arrowhead section is preferably located outside the groove and forms a splinter protection lip.

[0018] Advantageously, an engagement structure, preferably circular in shape and thickened relative to the shaft section, is provided at a distal end of the shaft section.

[0019] The engagement structure is advantageously engaged with a complementary engagement structure of the workpiece support plate or the groove, and, through positive locking, prevents the splinter protection element from being removed from the workpiece support plate transversely to the sawing direction. This design ensures that the splinter protection element sits sufficiently firmly in the groove during operation of the table saw, yet can still be removed relatively easily from the workpiece support plate, for example, if the splinter protection element needs to be replaced.

[0020] According to a further advantageous embodiment, the table saw has coupling means. The coupling means are preferably suitable for providing a detachable, vertically tensile-resistant coupling with the at least one box-shaped body when the table saw forms a vertical stack together with at least one box-shaped body. With the aid of the coupling means, the table saw can be stably accommodated in a vertical stack and transported in this. This improves the handling and transportability of the table saw. The above-described attachment of the splinter protection element directly to the movable workpiece support plate is particularly advantageous in this context because, as already mentioned above, it enables a simple and thus as compact as possible design of the table saw.Conveniently, the outer shape of the table saw corresponds to the shape of a system box, so that the table saw can be stored in a stack of system boxes.

[0021] An exemplary embodiment of a table saw is described below with reference to the figures. Figure 1 a perspective view of a table saw with the workpiece support plate extended and the splinter guard element inserted, Figure 2 a perspective view of a table saw with the workpiece support plate extended and the splinter guard element removed, Figure 3 a front view of a table saw with the splinter guard element removed, Figure 4 a perspective view of a table saw with the upper part.

[0022] The Figure 1shows an exemplary embodiment of a table saw 1. The table saw 1 is designed as a circular table saw, but can alternatively also be designed as another table saw, for example as a table jigsaw.

[0023] The table saw 1 extends in a vertical direction parallel to the z-axis shown in the figures, in a longitudinal direction parallel to the x-axis shown in the figures, and in a transverse direction parallel to the y-axis shown in the figures. The x-axis, y-axis, and z-axis are aligned orthogonally to each other.

[0024] The table saw 1 has a support structure 2 that can be placed on a base. A workpiece support plate 4 is provided on the upper side of the support structure 2. The table saw 1 also has a saw blade 5 that projects upwards above the workpiece support plate 4. The workpiece support plate 4 is mounted so as to be displaceable relative to the support structure 2 and the saw blade 5 in a sawing direction y. The workpiece support plate 4 has a splinter protection element 6. The splinter protection element 6 is arranged on a side 7 of the workpiece support plate 4 facing the saw blade. The side 7 of the workpiece support plate 4 is guided past the saw blade 5 when the workpiece support plate 4 is displaced.

[0025] This design of the table saw 1 solves the problem mentioned at the beginning, namely that the risk of damage to the surface of a workpiece during handling and processing of the workpiece can be reduced by means of a table saw structure that is as simple as possible.

[0026] In the following, exemplary details of the table saw 1 are explained in more detail.

[0027] As in the Figure 1 As shown, the support structure 2 is box-shaped. The support structure 2 has four orthogonally aligned peripheral walls 8, 9, 10, 11, which are essentially closed. The two peripheral walls 8 and 10 lie in parallel xz planes, and the two peripheral walls 9 and 11 lie in parallel yz planes. It should be noted that the support structure 2 can alternatively be designed differently; for example, the support structure 2 can also be designed as a leg frame.

[0028] The workpiece support plate 4 is provided on the upper side of the support structure 2. The workpiece support plate 4 has a rectangular support surface that faces upwards when the table saw 1 is in the operating position. The workpiece support plate 4 lies in an xy plane and is displaceably mounted on the support structure 2, so that the workpiece support plate 4 can be displaced relative to the support structure 2 and relative to the saw blade 5 in the sawing direction y or the y-direction.

[0029] The workpiece support plate 4 can be moved into different positions in the y-direction relative to the support structure 2. The Figure 1 and 2 show the workpiece support plate 4 in an extended position. In the extended position, a major part of the workpiece support plate 4 is expediently located outside a horizontal outer contour of the box-shaped support structure 2. Figure 4shows the workpiece support plate 4 in a transport position. In the transport position, the workpiece support plate 4 is arranged flush with the horizontal outer contour of the support structure 2, so that the workpiece support plate 4 and the support structure 2 together form a box-shaped or cuboid-shaped body, which is also referred to below as the lower part 20.

[0030] Using a locking device (not shown), the workpiece support plate 4 can be fixed relative to the saw blade 5 or the support structure 2. The fixation can be adjusted, for example, via a rotary knob 33 provided on the peripheral wall 9. The workpiece support plate 4 can, in particular, be fixed in a position in which it is arranged in alignment with the support structure 2.

[0031] The saw blade 5 is provided on the upper side of the support structure 2. The saw blade 5 extends through an opening provided in the support structure 2 and projects upwards past the workpiece support plate 4. The saw blade 5 lies on an imaginary line oriented in the y-direction, which divides the upper side of the support structure 2 into two x-regions in the x-direction. The movable workpiece support plate 4 is provided in one x-region. In the other x-region, a support plate 12 is provided, which is preferably stationary relative to the support structure 2. The movable workpiece support plate 4 and the support plate 12 preferably occupy the same z-region, so that they lie in the same xz-plane. In the transport position of the workpiece support plate 4, the workpiece support plate 4 and the support plate 12 together form a body having a substantially rectangular horizontal outer contour.

[0032] The saw blade 5 is preferably arranged off-center in the x-direction relative to the upper side of the support structure 2, so that the workpiece support plate 4 is longer in the x-direction than the support plate 12. For example, the workpiece support plate 4 can be approximately twice as long in the x-direction as the support plate 12.

[0033] In the example shown, the upper sides or support surfaces of the workpiece support plate 4 and the support plate 12 are provided with grooves. Alternatively, the upper side of the workpiece support plate 4 and / or the support plate 12 can also be provided without grooves, be flat, or have a different structure.

[0034] With respect to the y-direction, the saw blade 5 is arranged in a rear region of the support structure 2. The support plate 12 has a rectangular recess 13 extending in the y-direction in this region. According to an embodiment not shown in the figures, a splinter protection element, for example a splinter protection rubber lip, can be provided on the support plate 12, in particular in the recess 13, particularly in the y-region in which the saw blade 5 or the cutting area of ​​the saw blade 5 is located.

[0035] The table saw 1 comprises a drive device not shown in the figures, for example an electric motor and possibly corresponding control electronics, for mechanically driving the saw blade 5. By way of example, the drive device is arranged completely in the support structure 2 and fastened thereto in a ready-to-use manner, so that the drive device remains in the support structure 2 during machining of the workpiece by the saw blade 5 driven by the drive device.

[0036] The splinter protection element 6 is detachably attached to the workpiece support plate 4. The Figure 1 and 4 show the splinter protection element 6 in a state attached to the workpiece support plate 4, while the Figure 2 and 3 show the splinter protection element 6 in a state in which it is removed from the workpiece support plate 4.

[0037] In the Figure 2the splinter protection element 6 is removed from the workpiece support plate 4. As shown in the Figure 2 As shown, the splinter protection element has a splinter protection lip that extends in the y-direction. The splinter protection element 6 is elongated or rod-shaped, in particular strip-shaped. The splinter protection element is made, for example, of rubber or another flexible material.

[0038] In the exemplary embodiment shown, the splinter protection element 6 extends over the entire side 7 of the workpiece support plate 4 facing the saw blade 5. In particular, the splinter protection element extends over the entire width of the support structure 2 or the table saw 1. As an alternative to the embodiment shown, the splinter protection element 6 can also be designed such that it does not extend over the entire side 7 of the workpiece support plate 4. In this case, it is advantageous if the splinter protection element 6 extends at least over the y-region of the workpiece support plate 4, which can be positioned in the cutting area of ​​the saw blade 5.

[0039] The Figure 3 shows a front view of the table saw 1. Furthermore, the Figure 3 a detailed view of the side 7 of the workpiece support plate 4 facing the saw blade 5.

[0040] As in the Figure 3As can be seen, a groove 14 for receiving the splinter protection element 6 is provided on the side 7 of the workpiece support plate 4 facing the saw blade 5. The side 7 is, for example, a vertical side surface of the workpiece support plate 4. The profile of the groove 14 extends accordingly horizontally or in the x-direction into the workpiece support plate 4. The groove 14 is designed to be complementary to a section of the splinter protection element 6 so that it can accommodate this section. The groove 14 runs, for example, across the entire width of the workpiece support plate 4; alternatively, the groove 14 can also run across only part of the width of the workpiece support plate 4. In the example shown, the groove 14 opens out at a front and a back of the workpiece support plate 4.

[0041] As also in the Figure 3As shown, the splinter protection element 6 has an arrow-shaped profile. The profile has an arrowhead section 15 and a shaft section 16 connected thereto. The arrowhead section 15 tapers in the x-direction towards the saw blade 5. The arrowhead section is designed such that an upper side surface 31 of the arrowhead section 15, when the splinter protection element 6 is inserted, is arranged substantially flush with the support surface of the workpiece support plate 4. The upper side surface 31 lies in the same xz plane as the support surface of the workpiece support plate 4. The arrowhead section 15 has a triangular profile, wherein the upper side surface 31 is aligned approximately orthogonal to a side surface 32 facing the shaft section 16.

[0042] At the distal end of the shaft portion 16 facing away from the arrowhead portion 15, an engagement structure 18, which is exemplary circular or cylindrical, is provided. The engagement structure 18 is thickened compared to the shaft portion 16. The shaft portion 16 is designed to complement the groove 14 so that it can be accommodated therein. The arrowhead portion 15 is located outside the groove 14 and forms a splinter protection lip.

[0043] The groove 14 is formed complementarily to the shaft portion 16. In particular, the groove 14 has an engagement structure 19 formed complementarily to the engagement structure 18, which engages with the engagement structure 18 in a state in which the splinter protection element 6 is attached to the workpiece support plate 4.

[0044] In the shown embodiment of the Figure 3the splinter protection element 6 is dimensioned such that it does not extend in front of the saw blade 5; i.e., that it does not occupy the same x-range as the saw blade 5. Alternatively, the splinter protection element 6 can also be designed such that it extends in front of the saw blade 5; i.e., that it occupies the same x-range as the saw blade. If the splinter protection element 6 is dimensioned in the latter way, it can be pushed into the saw blade 5 by sliding the workpiece support plate 4 when the table saw 5 is put into operation. In this way, the splinter protection element can be cut to fit precisely.

[0045] In the Figure 3It can also be seen that the workpiece support plate 4 has a plate section 3 in the x-direction that tapers towards the saw blade 5. At the distal end of this plate section 3 is the aforementioned side 7, or the vertical side surface on which the groove 14 is provided. In the example shown, the plate section 3 tapers such that the z-extension of the side 7 essentially corresponds to the maximum z-extension of the splinter protection element 6. The part of the support surface of the workpiece support plate 4 belonging to the plate section 3 lies in the same xy plane as the remaining part of the support surface of the workpiece support plate 4.

[0046] The Figure 4shows the table saw 1 in a configuration in which the table saw 1 has an upper part 21 in addition to the lower part 20. The upper part 21 is hood-shaped and has a carrying handle 22, which is arranged, for example, on the upper side of the upper part 21. The upper part 21 can be placed on the lower part 20 and detachably coupled to the lower part 20 in a vertically tensile manner. For this purpose, the upper part 21 and the lower part 20 have corresponding coupling means 23, such as a rotary latch 24, tabs 25, a receptacle (not shown) for the tabs 25, and a locking anchor contour 26. In a state in which the upper part 21 is placed on the lower part 20, the table saw 1 has a substantially box-shaped or cuboid-shaped basic shape. The external shape of the table saw 1 then corresponds to that of a system box.

[0047] The table saw 1 has further coupling means 27 which are suitable for providing a detachable, vertically tensile-resistant coupling with the at least one box-shaped body in a state in which the table saw 1 forms a vertical stack together with at least one box-shaped body not shown in the figures.

[0048] The basic shape of the table saw 1 is defined in particular by the box-shaped support structure 2 and the upper part 21. Preferably, the outer surfaces of the support structure 2 and the upper part 21 represent the housing or the outer housing surfaces of the table saw 1. The housing or the basic shape of the table saw 1 has in particular the shape of a system box. System boxes of a system have a base area defined in the system and have coupling means defined in the system, so that system boxes of a system can be assembled into a stable stack. System boxes are widely used, for example, as modular tool boxes for storing hand-held power tools, accessories and / or consumables. If the basic shape or the housing of the table saw is designed in the form of a system box, the transportable processing unit can be conveniently stowed and transported in a stack of system boxes.

[0049] The coupling means 27 comprise, in particular, upper coupling means provided on the upper part 21. The upper coupling means are suitable for providing a releasable, vertically tensile-resistant coupling with the box-shaped body in a state in which a box-shaped body, such as another table saw 1, is stacked on the table saw 1. The upper coupling means comprise a movably mounted locking element 28. In the example shown, the locking element 28 is a rotary latch rotatably mounted on the upper part 21. The rotary latch is arranged on the front wall of the upper part 21. The rotation axis of the rotary latch runs orthogonal to the front wall.

[0050] Conveniently, the coupling means 27 further comprise lower coupling means provided on the lower part 20. The lower coupling means are suitable for providing a detachable, vertically tensile-resistant coupling to the box-shaped body when the table saw 1 is stacked on a box-shaped body, such as another table saw 1. The lower coupling means comprise at least one locking anchor contour 29 fixedly arranged on the lower part 20. The locking anchor contour 29 is located on the front peripheral wall 8 of the lower part 20. The locking anchor contour 29 is designed as a locking projection and protrudes from the peripheral wall 8.

[0051] The locking element 28 and the locking anchor contour 29 are arranged and designed such that, when two table saws 1 are stacked vertically one above the other, the locking element 28 of one table saw 1 can be brought into coupling engagement with the locking anchor contour 29 of the other table saw 1.

[0052] The coupling means 27 may further comprise engagement structures provided on the underside and the top side of the table saw 1. For example, the table saw 1 may have one or more engagement recesses 30 on the top side of the upper part 21 and one or more engagement projections corresponding to the engagement recesses on the underside of the lower part 3 (not shown in the figures). The engagement structures may be configured such that they contribute to the vertically secured coupling.

Claims

1. Table saw (1), preferably a circular table saw, with a support structure (2) which can be placed on a support and on the upper side of which a workpiece support plate (4) is provided, and with a saw blade (5) which projects upwards over the workpiece support plate (4), characterised in that the workpiece support plate (4) is mounted in a sliding manner relative to the support structure (2) and to the saw blade (5) in the sawing direction (y) and in that it has a splinter protection element (6) which is arranged on a side (7) of the workpiece support plate (4) facing the saw blade (5) and which is guided past the saw blade (5) when the workpiece support plate (4) is slid, wherein a groove (14) is provided on the side of the workpiece support plate (4) facing the saw blade (5), which groove receives a portion of the splinter protection element (6).

2. Table saw (1) according to claim 1, characterised in that the splinter protection element (6) comprises a splinter protection lip, preferably a rubber splinter protection lip.

3. Table saw (1) according to claim 1 or 2, characterised in that the splinter protection element (6) extends in front of the saw blade (5) so that the splinter protection element (6) can be cut to size from the saw blade (5) by displacing the workpiece support plate (4) when the table saw (1) is put into operation.

4. Table saw (1) according to any one of claims 1 to 3, characterised in that the splinter protection element (6) is detachably attached to the workpiece support plate (4).

5. Table saw (1) according to any one of claims 1 to 4, characterised in that the groove (14) opens out at a front and / or rear side of the workpiece support plate (4).

6. Table saw (1) according to any one of claims 1 to 5, characterised in that the splinter protection element (6) is elongated and preferably extends over the entire side (7) of the workpiece support plate (4) facing the saw blade (5).

7. Table saw (1) according to any one of claims 1 to 6, characterised in that the splinter protection element (6) has an arrow-shaped profile with an arrowhead section (15) and a shaft section (16), wherein the shaft section (16) is accommodated in a groove (14) provided on the workpiece support plate (4) and the arrowhead section (15) is located outside the groove (16) and forms a splinter protection lip.

8. Table saw (1) according to claim 7, characterised in that a preferably cylindrically formed engagement structure (18) thickened relative to the shaft section (16) is provided at a distal end of the shaft section (16).

9. Table saw (1) according to claim 8, characterised in that the engagement structure (18) is in engagement with a complementary engagement structure (19) of the workpiece support plate (4) and prevents the splinter protection element (6) from being removed from the workpiece support plate (4) transversely to the sawing direction (y) by positive locking.

10. Table saw (1) according to any one of claims 1 to 9, characterised by coupling means (27) suitable to provide, in a state in which the table saw (1) together with at least one box-shaped body forms a vertical stack, a releasable vertically tension-proof coupling with the at least one box-shaped body.

11. Table saw (1) according to claim 1, wherein the splinter protection element (6) comprises an elongated body with an arrow-shaped profile, which has an arrowhead section (15) and a shaft section (16), wherein a preferably circular engagement structure (18) thickened with respect to the shaft section is provided at a distal end of the shaft section (16).

12. Table saw (1) according to a preceding claim, wherein the workpiece support plate (4) can be brought into a transport position in which the workpiece support plate (4) is aligned with the horizontal outer contour of the support structure (2) so that the workpiece support plate (4) and the support structure (2) together form a box-shaped body.

13. Table saw (1) according to a preceding claim, further comprising a locking device by means of which the workpiece support plate (4) can be fixed relative to the saw blade (5) and / or to the support structure (2).

14. Table saw (1) according to a preceding claim, wherein the saw blade (5) lies on an imaginary line extending in a y-direction, which divides an upper side of the support structure (2) in an x-direction, running orthogonally to the y-direction, into two x-regions, wherein the workpiece support plate (4) is provided in one of the x-regions and a support plate (12) is provided in the other x-region, wherein the workpiece support plate (4) and the support plate (12) in a transport position of the workpiece support plate (4) together form a body having a substantially rectangular horizontal outer contour.