Stop unit, electric tool apparatus, and method

Abstract

The invention relates to a stop unit (10) for guiding a workpiece (8), comprising: a stop body (1) extending in the longitudinal direction of the stop unit (10); and a fastening device having a first fastening mechanism (11) and a second fastening mechanism (12), which can be shifted into a relevant fastening position, for fastening the stop unit (10) to an electric tool (20), in particular a saw unit, and which are arranged spaced apart from one another in the longitudinal direction; further comprising: an operating element, which is coupled to the first fastening mechanism (11) and the second fastening mechanism (12) and can be made to perform a first operating-element movement, by means of which the fastening device can be sequentially shifted first into a first fastening state and then into a second fastening state, wherein in the first fastening state the first fastening mechanism (11) is in its fastening position and the second fastening mechanism is in a release position, and wherein in the second fastening state the first and the second fastening mechanism (11, 12) are in the relevant fastening position.

Description

[0001] Stop unit, power tool device and method

[0002] The invention relates to a stop unit for guiding a workpiece, comprising a stop body extending in the longitudinal direction of the stop unit and a fastening device with a first fastening mechanism and a second fastening mechanism, which can be moved into a respective fastening position in order to fasten the stop unit to a power tool, in particular a saw unit, and which are arranged at a distance from one another in the longitudinal direction. The stop unit is, for example, a parallel stop for a table saw.

[0003] According to a conventional design, the two fastening mechanisms are decoupled from one another and are operated separately with a respective operating lever in order to clamp the fastening mechanisms to the power tool.

[0004] According to another conventional design, the two fastening mechanisms are coupled to each other via a connecting rod and are operated simultaneously with a single operating lever, so that both fastening mechanisms are clamped to the power tool simultaneously. One object of the invention is to provide an easy-to-use stop unit that enables safe operation of the power tool.

[0005] The object is achieved by a stop unit according to claim 1. The stop unit comprises an operating element which is coupled to the first fastening mechanism and the second fastening mechanism and which can be set into a first operating element movement by means of which the fastening device can be set sequentially first into a first fastening state and then into a second fastening state, wherein in the first fastening state the first fastening mechanism is in its fastening position and the second fastening mechanism is in a release position, and wherein in the second fastening state the first and the second fastening mechanism are in the respective fastening position.

[0006] As a result of the movement of the operating element, the fastening device sequentially assumes first the first fastening state and then the second fastening state. In the first fastening state, expediently only the first fastening mechanism provides a clamp on the power tool, while the second fastening mechanism expediently does not yet provide a clamp on the power tool. Therefore, before both fastening mechanisms provide a respective fastening, in particular a clamp, on the power tool, a state - the first fastening state - is first passed through in which only the first fastening mechanism provides the fastening, in particular a clamp, on the power tool.By first passing through the first fastening state, it is easier to ensure that the stop unit assumes a predetermined stop unit orientation relative to a tool of the power tool, in particular relative to a feed direction and / or to a cutting direction of the tool. Preferably, the first fastening mechanism is designed to cause the stop unit to assume the predetermined stop unit orientation when assuming the first fastening position.Because the second fastening mechanism only assumes the second fastening position when the first fastening mechanism is already in the first fastening position, the risk that the second fastening position, in particular a clamping effected by the second fastening mechanism, will disrupt the stop unit alignment to be effected by the first fastening mechanism relative to the tool can be reduced or eliminated. The sequential assumption of the first fastening state and the second fastening state therefore enables correct stop unit alignment and thus safe operation. The two fastening states are brought about by means of a single operating element and a single operating element movement, in particular a single rotary movement of the operating element. The stop unit is therefore easy to operate.

[0007] Advantageous further training is the subject of the subclaims.

[0008] The invention also relates to a power tool

[0009] Device, in particular a sawing device, comprising a power tool, in particular a sawing unit, and the stop unit.

[0010] The invention further relates to a method for operating the power tool device, comprising the step of: setting the operating element in the first operating element movement in order to set the fastening device sequentially first into the first fastening state and then into the second fastening state.

[0011] Further exemplary details and exemplary embodiments are explained below with reference to the figures.

[0012] Figure 1 is a perspective view of a stop unit,

[0013] Figure 2 is a perspective view of a power tool device,

[0014] Figure 3 is a sectional view of a first fastening mechanism,

[0015] Figure 4 is a sectional view of a second fastening mechanism,

[0016] Figure 5 shows a side view and a sectional view of the stop unit in a release state,

[0017] Figure 6 shows a side view and a sectional view of the stop unit in a first fastening state, Figure 7 shows a side view and a sectional view of the stop unit in a second fastening state,

[0018] Figure 8 is a schematic view of a first axial end of the stop unit from above, and

[0019] Figure 9 is a schematic view of the first axial end from below.

[0020] In the following explanations, reference is made to the x-direction, y-direction, and z-direction shown in the figures, which are orthogonal to each other. The x-direction and y-direction are horizontal directions, and the y-direction is a vertical direction.

[0021] Figure 1 shows a stop unit 10. The stop unit 10 is designed in particular as a longitudinal stop and can also be referred to as a parallel stop. The stop unit 10 serves to guide a workpiece 8. The stop unit 10 can be attached to a power tool 20, in particular a sawing unit, preferably a circular table saw. The stop unit 10 defines a guide axis along which the workpiece 8 can be guided.

[0022] The stop unit 10 comprises a stop body 1 extending in a longitudinal direction of the stop unit 10. The longitudinal direction is oriented in the x-direction, for example. The stop unit 10, in particular the stop body 1, extends along a longitudinal axis 5 which is oriented in the longitudinal direction. The stop body 1 is preferably strip-shaped. For example, the stop body 1 is cuboid-shaped. The stop body 1 has a stop surface 7 along which the workpiece 8 can be guided. The stop surface 7 is expediently oriented vertically, in particular perpendicular to the y-direction. The stop surface 7 is arranged on a first longitudinal side of the stop body 1. The stop surface 7 expediently defines the guide axis.

[0023] The stop unit 10 further comprises a fastening device. The fastening device comprises a first fastening mechanism 11 and a second fastening mechanism 12. An exemplary embodiment of the first fastening mechanism 11 is shown in Figure 3, and an exemplary embodiment of the second fastening mechanism 12 is shown in Figure 4.

[0024] The first fastening mechanism 11 and the second fastening mechanism 12 can be moved into a respective fastening position in order to fasten the stop unit 10 to the power tool 20, in particular the saw unit. The fastening position of the first fastening mechanism 11 should also be referred to as the first fastening position and the fastening position of the second fastening mechanism should also be referred to as the second fastening position. The first fastening mechanism and the second fastening mechanism are designed as respective clamping mechanisms. In the first fastening position, the first fastening mechanism provides a clamp to the power tool 20 and in the second fastening position, the second fastening mechanism provides a clamp to the power tool.

[0025] The first fastening mechanism 11 and the second fastening mechanism 12 can be moved into a respective release position in order to release the fastening of the stop unit 10 on the power tool 20. The release position of the first fastening mechanism 11 shall also be referred to as the first release position and the release position of the second fastening mechanism shall also be referred to as the second release position. In the first release position, the first fastening mechanism does not provide any clamping to the power tool.

[0026] 20 and in the second release position the second fastening mechanism does not provide clamping to the power tool.

[0027] The first fastening mechanism 11 and the second fastening mechanism 12 are arranged at a distance from one another in the longitudinal direction. Preferably, the first fastening mechanism 11 is arranged at a first axial end 21 of the stop body and / or the second fastening mechanism 12 is arranged at a second axial end

[0028] 21 of the stop body 1. In particular, the first fastening mechanism 11 and / or the second fastening mechanism 12 are arranged on the underside of the stop body 1.

[0029] The stop unit 10 further comprises an operating element 2. The operating element 2 is arranged, for example, on the stop body 1, in particular on a second longitudinal side of the stop body 1. The second longitudinal side is oriented opposite to the first longitudinal side - for example normal to the negative y-direction. For example, the operating element 2 is designed as an operating lever. The operating element 2 is mounted movably, in particular rotatably, on the stop body 1. The operating element 2 is coupled to the first fastening mechanism 11 and the second fastening mechanism 12, expediently via a coupling mechanism that is preferably arranged in the stop body 1.

[0030] The operating element 2 can be set into a first operating element movement, in particular manually by a user. The operating element 2 can expediently be gripped and moved manually by the user in order to set it in the first operating element movement. The first operating element movement is, for example, a first rotational movement in a first rotational direction, for example clockwise (in an x-z ​​view). By means of the first operating element movement, the fastening device can be set sequentially first into a first fastening state and then into a second fastening state. The first fastening state is shown in Figure 6 and the second fastening state is shown in Figure 7. In the first fastening state, the first fastening mechanism 11 is in its fastening position - i.e. in the first fastening position - and the second fastening mechanism 12 is in its release position.In the second fastening state, the first and second fastening mechanisms 11, 12 are in the respective fastening position - i.e. the first fastening mechanism is in the first fastening position and the second fastening mechanism is in the second fastening position.

[0031] In particular, the fastening device can be moved from a release state via the first fastening state into the second fastening state by the first control element movement. The release state is shown in Figure 5. In the release state, the first and the second fastening mechanism 11, 12 are in the respective release position - i.e. the first fastening mechanism is in the first release position and the second fastening mechanism is in the second release position.

[0032] When attached to the power tool 20, the stop unit 10 cannot be removed from the power tool 20 in the first fastening state and / or the second fastening state. In the release state, the stop unit 10 can be removed from the power tool 20.

[0033] The operating element 2 can also be set into a second operating element movement, which is expediently opposite to the first operating element movement. The second operating element movement is, for example, a second rotational movement in a second rotational direction, for example counterclockwise (in an x-z ​​view). By means of the second operating element movement, the fastening device can be set from the second fastening state into the release state, in particular via the first fastening state.

[0034] The first fastening mechanism 11 comprises an alignment section 3. The alignment section 3 extends along an alignment section longitudinal axis 6. The alignment section longitudinal axis 6 is aligned orthogonally to the longitudinal axis 5 of the stop unit 1. Expediently, the alignment section longitudinal axis 6 is aligned in the y-direction. The alignment section 3 is, for example, cuboid-shaped and is expediently arranged on the underside of the stop body 1 at the first axial end 21. Preferably, the y-extension of the alignment section 3 is greater than the y-extension of the stop body 1. For example, the alignment section 3 projects beyond the stop body 1 on both sides with respect to the y-axis.

[0035] The alignment section 3 can be placed against a reference section 4 of the power tool 20 in order to bring the stop unit 10, in the first fastening state, with its longitudinal axis extending in the longitudinal direction relative to the power tool, into a predetermined stop unit alignment, so that the stop unit is already in the predetermined stop unit alignment when the second fastening state is adopted sequentially after the first fastening state. Expediently, the stop unit alignment is already definitively determined in the first fastening state by the alignment section 3, and the adoption of the second fastening state

[0036] - in particular the assumption of the second fastening position

[0037] - the stop unit no longer changes orientation.

[0038] Preferably, in the predetermined stop unit orientation, the guide axis of the stop unit 10 is aligned relative to a processing axis, in particular a cutting axis, of the power tool 20 such that the guide axis and the cutting axis move away from one another (i.e. in particular diverge) in the feed direction (of a workpiece 8 onto a tool 9 of the power tool 20), or that the guide axis and the cutting axis run parallel to one another. By means of such a stop unit orientation, the risk of a kickback can be reduced. Figure 2 shows a power tool device 30 which is designed as a sawing device by way of example. The power tool device 30 comprises the power tool 20 which is designed as a sawing unit by way of example. The power tool device 30 further comprises the stop unit 10.

[0039] Figure 2 shows the stop unit 1 in a state attached to the power tool 20. Conveniently, the stop unit 1 can be completely removed from the power tool 20 (in particular by releasing the first fastening mechanism 11 and the second fastening mechanism 12).

[0040] The power tool 20 comprises a workpiece support 14, which is designed in particular as a workpiece support surface. The workpiece support 14 is oriented perpendicular to the z-direction in a proper orientation of the power tool 20. For example, the stop unit 10 (in the state attached to the power tool) is arranged on the workpiece support 14. For example, the stop unit 10 extends over at least 80% of the x-extension of the workpiece support 14 and / or the power tool 20.

[0041] The power tool 20 comprises a tool 9, which is designed as a saw blade, for example. The tool 9 defines, for example, a feed direction oriented in the x-direction, in which feed direction the workpiece 8 is to be pushed onto the tool 9 in order to machine the workpiece 8 with the tool 9. For example, the tool 9 projects upwards from the workpiece support 14. The tool 9 defines the cutting direction (which is oriented in particular in the x-direction) and the cutting axis oriented in the cutting direction. The power tool 20 expediently comprises a support structure 16, which, for example, has a cuboid basic shape. The top side of the support structure 16 provides, for example, the workpiece support 14.By way of example, when machining the workpiece 8 with the tool 9, the power tool 20 stands with the underside of the support structure 16 on a base, for example a work table or a workbench, in particular stationary.

[0042] The power tool 20 is designed, for example, as a mobile or semi-stationary power tool 20. The power tool 20 can conveniently be carried by a single person.

[0043] The stop unit 10 is expediently designed as a parallel stop. When attached to the power tool 20, the stop unit 10 is aligned with its longitudinal direction in the feed direction in which the workpiece 8 is to be pushed onto the tool 9 of the power tool 20 in order to machine the workpiece 8 with the tool 9. The stop unit 10 faces the tool 9 with its stop side 7. In particular, when attached to the power tool 20, the stop unit 10 is arranged laterally next to the tool 9, in particular laterally next to the cutting axis of the tool 9.

[0044] The power tool 20 preferably has a first fastening section 17 and / or a reference section 4, to which the stop unit 1 (in the first fastening state and in the second fastening state) is fastened with the first fastening mechanism 11 when the stop unit 1 is in the state attached to the power tool 20. By way of example, the first fastening mechanism 11 is clamped between the first fastening section and the reference section 4. By way of example, the first fastening section 17 is a particularly vertically oriented first contact surface for the first fastening mechanism 11 and / or the reference section 4 is a particularly vertically oriented second contact surface for the first fastening mechanism 11.

[0045] The first fastening section 17 and / or the reference section 4 is arranged, for example, in a front edge region of the workpiece support 14 (in particular with respect to the x-direction).

[0046] The power tool 20 preferably has a fastening groove 15, which exemplarily provides the first fastening section 17 and the reference section 4. The fastening groove 15 is arranged in particular on the upper side of the support structure 16, in particular in the workpiece support 14. The fastening groove 15 runs, for example, in the y-direction and preferably extends over at least 30% of the y-extension of the workpiece support 14 and / or the power tool 20. The fastening groove 15 is arranged, for example, in a front edge region of the workpiece support 14. In the state in which the stop unit 10 is attached to the power tool 20, the alignment section 3 is inserted into the fastening groove 15.

[0047] The fastening groove 15 has a first groove inner side, which provides the first fastening section 17. The first groove inner side is oriented, for example, perpendicular to the positive x-direction. The fastening groove 15 has a second groove inner side opposite the first groove inner side, which provides the reference section 4.

[0048] The power tool 20 further has a second fastening section 18, to which the stop unit 1 (in the second fastening state) is fastened with the second fastening mechanism 12 when the stop unit 1 is in the state attached to the power tool 20. By way of example, the second fastening mechanism 12 is clamped to the second fastening section 18. By way of example, the second fastening section 18 is a particularly horizontally oriented contact surface for the second fastening mechanism 12. The second fastening section 18 is by way of example arranged in a rear region (in particular with respect to the x-direction) - in particular at the rear end (with respect to the x-direction) - of the workpiece support 14 and / or of the power tool 20.

[0049] Figure 3 shows a sectional view of the first fastening mechanism 11 in a state in which the alignment section 3 is inserted into the fastening groove 15 and the first fastening mechanism 11 is in the first release position. In the first release position, the first fastening mechanism 11 does not provide any fastening (in particular, no vertical fastening and / or no fastening effective in the y-direction) of the stop unit 1 to the power tool 20.

[0050] The first fastening mechanism 11 comprises a first fastening element 31. The first fastening element 31 can be set into a first fastening element movement by the first operating element movement relative to the alignment section in order to assume the first fastening position and thus be brought into engagement with the first fastening section 17 of the power tool 20.

[0051] In the first fastening position of the first fastening mechanism 11, the first fastening element 31 presses against the first fastening section 17 - for example against the first groove inside - and the alignment section 3 presses against the reference section 4 - for example against the second groove inside - in order to provide a clamping fastening of the stop unit 1 to the power tool 20.

[0052] The reference section 4 has a defined alignment with respect to the cutting axis of the tool 9, so that the predetermined stop unit alignment is achieved by the alignment section 3 being placed on the reference section 4.

[0053] The first fastening element 31 is mounted, for example, so as to be pivotable relative to the stop body 1, in particular about a first fastening element pivot axis 19 oriented in the y-direction. The first fastening element movement is, in particular, a pivoting movement.

[0054] The first fastening element 31 has a first clamping section 23 which, in the first fastening position, protrudes from the alignment section 3, in particular in the negative x-direction, in order to press against the first fastening section 17. The first clamping section 23 is located below the stop body 1. The first clamping section 23 is located in the fastening groove 15 in a state in which the stop unit 10 is attached to the power tool 20. The first fastening element 31 has a coupling section 24 which is coupled to the operating element 2 via the coupling mechanism. By way of example, the coupling section 24 is arranged in the stop body 1.

[0055] The coupling mechanism of the stop unit 10 comprises, by way of example, a first coupling element 25, which is designed in particular as an eccentric element and couples the operating element 2 to the first fastening element 31, such that the first operating element movement is converted into the first fastening element movement. Expediently, the first coupling element 25 is coupled to the operating element 2 in a rotationally fixed manner, in particular fastened thereto. The first coupling element 25 is mounted so as to be rotatable relative to the stop body 1 about an axis of rotation (exemplarily the axis of rotation of the operating element 2). The first coupling element 25 rests on the coupling section 24. The first coupling element 25 has a first outer contour region 26 and a second outer contour region 27. By way of example, the first outer contour region 26 and the second outer contour region 27 are regions of the outer contour of the first coupling element 25 in an x-z ​​section.The radius of the first outer contour region 26 (relative to the rotational axis of the first coupling element 25) is expediently smaller than the radius of the second outer contour region 27 (relative to the rotational axis of the first coupling element 25). Preferably, the radius of the second outer contour region 27 is constant.

[0056] In a first rotational position range of the operating element 2, the first coupling element 25 rests with the first outer contour region 26 on the coupling section 24 and thereby enables the first release position of the first fastening element 31 (and in particular the release state of the fastening device). The first rotational position range is followed by a second rotational position range and the second rotational position range is followed by a third rotational position range. In the second rotational position range and the third rotational position range of the operating element 2, the first coupling element 25 rests with the second outer contour region 26 on the coupling section 24 and thereby brings about the first fastening position of the first fastening element 31. By way of example, the coupling section 24 is pressed further downwards in the second rotational position range and in the third rotational position range than in the first rotational position range.

[0057] The coupling section 24 exemplarily has a spring plate 28. The first coupling element 25 expediently rests on the spring plate 28. The spring plate 28 is preferably supported on the stop body 1 and thereby exerts a spring force on the fastening element 31, which urges the fastening element 31 into the release position.

[0058] Optionally, the coupling section 24 has a clamping force adjustment element 29, which is embodied, for example, as a threaded pin. The clamping force of the first fastening mechanism 11 can be adjusted via the clamping force adjustment element 29. The clamping force adjustment element 29 is arranged, for example, on the side of the spring plate 28 facing away from the first coupling element 25 and presses the spring plate 28 toward the coupling element 25.

[0059] The coupling mechanism of the stop unit 10 further comprises a second coupling element 33, which is exemplarily designed as a coupling rod. The second coupling element 33 couples the operating element 2 to the second fastening mechanism 12. The second coupling element 33 converts the first operating element movement (executed as a rotary movement) into a movement with a linear movement component (in particular in the x-direction). The second coupling element 33 is exemplarily rotatable and / or coupled to the operating element 2 at a radial distance from the axis of rotation of the operating element 2, in particular fastened to the latter, so that the first operating element movement causes the second coupling element 33 to move with the linear movement component. The second coupling element 33 extends exemplarily over at least 60% or at least 70% of the longitudinal extent of the stop unit 10.The second coupling element 33 is arranged in the stop body 1, in particular completely.

[0060] Figure 4 shows a sectional view of the second fastening mechanism 12 in a state in which the stop unit 10 is attached to the power tool 20 and the second fastening mechanism 12 is in the second release position. In the second release position, the second fastening mechanism 12 does not provide any fastening (in particular, no vertical fastening and / or no fastening effective in the y-direction) of the stop unit 1 to the power tool 20.

[0061] The second fastening mechanism 12 comprises a second fastening element 32, which is exemplified as a hook element. The second fastening element 32 can be set into a second fastening element movement by the first operating element movement in order to assume the second fastening position and thus be brought into engagement with the second fastening section 18 of the power tool 20. The second fastening element 32 is preferably more elastic than the first fastening element 31.

[0062] In the second fastening position of the second fastening mechanism 11, the second fastening element 32 is pulled against the second fastening portion 18 to provide a clamping attachment of the stop unit 10 to the power tool 20. For example, in the second fastening position, a clamping projection of the power tool 20 is clamped between the second fastening element 32 and the underside of the stop body 1.

[0063] The second fastening element 32 is mounted, for example, so as to be pivotable relative to the stop body 1, in particular about a second fastening element pivot axis 35 oriented in the y-direction. The second fastening element movement is, in particular, a pivoting movement.

[0064] The second fastening element 32 has a second clamping section 34, which is designed in particular as a hook section and preferably presses against the second fastening section 18 in the second fastening position.

[0065] The second fastening element 32 is coupled to the operating element 2 via the coupling mechanism, in particular the second coupling element 33.

[0066] The second coupling element 33 is, for example, rotatably movable and / or coupled to the second fastening element 32 at a radial distance from the second fastening element pivot axis 35, in particular fastened thereto. The linear movement component of the second coupling element 33 caused by the first control element movement causes the second fastening element movement, for example the pivoting movement about the second fastening element pivot axis 35.

[0067] In the first rotational position range of the operating element 2 (and preferably in the second rotational position range), the second fastening element 32, in particular the second clamping section 34, is not in engagement with the second fastening section 18 and is thus in the second release position.

[0068] In the third rotational position range of the operating element 2, the second fastening element 32, in particular the second clamping section 34, is in engagement with the second fastening section 18 and is thus in the second fastening position.

[0069] Figures 5 to 7 show the different states through which the fastening device of the stop unit 10 passes when the operating element 2 is set in the first operating element movement.

[0070] Figure 5 shows the release state in which the stop unit 10 can be removed from the power tool, for example by a user grasping the stop unit 10 and lifting it upwards. In the release state, the first fastening mechanism 11, in particular the first fastening element 31, is in the first release position. In the release state, the second fastening mechanism 12, in particular the second fastening element 32, is in the second release position. In the release state, the stop unit 10 (in particular with the alignment section 3 inserted in the fastening groove 15) can expediently be positioned in the y-direction relative to the tool 9 and / or the workpiece support 14, in particular freely, preferably continuously.

[0071] Preferably, the orientation of the stop unit 10 relative to the tool 9, in particular of the guide axis relative to the cutting axis, is not fixed in the release state. In the release state, the guide axis can be moved, in particular pivoted, relative to the cutting axis, expediently in a horizontal plane—i.e., an xy plane.

[0072] The release state is achieved, for example, by the operating element 2 being in the first rotational position range. For example, the operating element 2 is oriented vertically upwards in the first rotational position range.

[0073] Figure 6 shows the first fastening state. In the first fastening state, the first fastening mechanism 11, in particular the first fastening element 31, is in the first fastening position. In the first fastening state, the second fastening mechanism 12, in particular the second fastening element 32, is in the second release position.

[0074] In the first fastening state, the stop unit 10 is preferably fixed to the power tool 20 in all spatial directions by the first fastening mechanism 11. In the first fastening state, the orientation of the stop unit 10 relative to the tool 9, in particular the orientation of the guide axis relative to the cutting axis, is expediently fixed and expediently cannot be changed.

[0075] The first fastening state is achieved, for example, by the operating element 2 being in the second rotational position range. For example, the operating element 2 is oriented diagonally upwards in the second rotational position range.

[0076] The transition from the release state to the first fastening state takes place in a first control element movement phase of the first control element movement.

[0077] The first operating element movement comprises the first operating element movement phase, which effects the first fastening element movement of the first fastening element 31 of the first fastening mechanism 11. The first fastening element 31 is pressed (in the first operating element movement) against the first fastening section 17 of the power tool 20 by the first fastening element movement in order to establish the first fastening state. The first fastening element movement takes place relative to the alignment section 3. When the first fastening element 31 bears against the first fastening section 17, the first fastening element movement causes the alignment section 3 to be pressed against the reference section 4, as a result of which the stop unit 10 is expediently displaced with its longitudinal axis 5 into the predetermined stop unit alignment relative to the tool 9, in particular to the cutting axis.

[0078] Figure 7 shows the second fastening state. In the second fastening state, the first fastening mechanism 11, in particular the first fastening element 31, is in the first fastening position. In the second fastening state, the second fastening mechanism 12, in particular the second fastening element 32, is in the second fastening position.

[0079] In the second fastening state, the stop unit 10 is preferably fixed to the power tool 20 in all spatial directions by the first and second fastening mechanisms 11, 12. In the second fastening state, the orientation of the stop unit 10 relative to the tool 9, in particular the orientation of the guide axis relative to the cutting axis, is expediently fixed and expediently cannot be changed.

[0080] The second fastening state is achieved, for example, by the operating element 2 being in the third rotational position range. For example, the operating element 2 is oriented horizontally in the third rotational position range.

[0081] The transition from the first fastening state to the second fastening state occurs in a second operating element movement phase of the first operating element movement. Advantageously, during the transition from the first fastening state to the second fastening state, the stop unit orientation, i.e., the orientation of the stop unit 10 relative to the tool 9, in particular the guide axis relative to the cutting axis, is not changed.

[0082] The control element movement comprises the second control element movement phase following the first control element movement phase, which causes the second fastening element 32 of the second fastening mechanism 12 to be brought into engagement with the second fastening section 18 of the power tool 20 in order to establish the second fastening state.

[0083] Preferably, the second fastening element 32 is brought into engagement with the second fastening section 18 (by the first operating element movement) only when the first fastening element movement is completed.

[0084] Preferably, no movement of the first fastening element 31 occurs in the second control element movement phase. In particular, the first fastening element movement has already been completed at the start of the second control element movement phase. By way of example, the first coupling element 25 rolls with the second outer contour region 27 over the coupling section 24 in the second control element movement phase. The second outer contour region 27 has a constant radius (with respect to the axis of rotation of the first coupling element 25), so that the first coupling element 25 does not cause any movement of the first fastening element 31 in the second control element movement phase.

[0085] Figure 8 shows the first axial end 21 of the stop unit 10 from above.

[0086] By way of example, the alignment section 3 has an alignment adjustment element 36, via which the predetermined stop unit alignment can be set. The alignment adjustment element 36 is, by way of example, a threaded pin. The alignment section 3 expediently has a through-hole, in particular running in the x-direction, in which the alignment adjustment element 36 is arranged. The alignment section 3 has an alignment section body 39, in which the through-hole is arranged and / or relative to which the alignment adjustment element 36 is adjustable, in particular in the x-direction.

[0087] Figure 9 shows the first axial end 21 of the stop unit 10 from below. The alignment section 3 defines, by way of example, two contact points with which the alignment section 3 can be placed on the reference section 4 in order to achieve the predetermined stop unit alignment. By way of example, a first contact point is defined by a first projection (projecting in particular in the x-direction) of the alignment section body 39. Expediently, a second contact point is defined by the alignment adjustment element 36. Preferably, the alignment section 3 has a clamping plate 38 which is expediently fastened to the alignment section body 39 and with which the alignment section 3 can be placed on the reference section 4 in order to achieve the predetermined stop unit alignment.The clamping plate 38 advantageously rests on the first projection 41 and / or on the alignment adjustment element 36, whereby the two contact points are defined.

[0088] Optionally, the power tool 20 includes a position indicator, for example a scale, for indicating a position of the stop unit 10 relative to the power tool 20 in a direction orthogonal to the longitudinal direction. Using the position indicator, the user can adjust the stop unit 10 to a specific position in the y-direction.

[0089] The power tool device 30 can be operated with a method comprising the step of: setting the operating element in the first operating element movement in order to set the fastening device sequentially first into the first fastening state and then into the second fastening state.

Claims

Claims 1. Stop unit (10) for guiding a workpiece (8), comprising a stop body (1) extending in the longitudinal direction of the stop unit (10) and a fastening device with a first fastening mechanism (11) and a second fastening mechanism (12) which can be moved into a respective fastening position in order to fasten the stop unit (10) to a power tool (20), in particular a saw unit, and which are arranged spaced apart from each other in the longitudinal direction, further comprising an operating element (2) coupled to the first fastening mechanism (11) and the second fastening mechanism (12), which can be moved into a first operating element movement by which the fastening device can be moved sequentially first into a first fastening state and then into a second fastening state,wherein in the first fastening state the first fastening mechanism (11) is in its fastening position and the second fastening mechanism is in a release position, and wherein in the second fastening state the first and the second fastening mechanism (11, 12) are in their respective fastening positions.

2. Stop unit (10) according to claim 1, wherein the first fastening mechanism (11) includes an alignment section (3) comprising, which can be attached to a reference section (4) of the power tool (20) in order to bring the stop unit (10) in the first fastening state with its longitudinally extending longitudinal axis (5) relative to the power tool (20) into a predetermined stop unit orientation, so that the stop unit (10) is already in the predetermined stop unit orientation when the second fastening state is sequentially following the first fastening state.

3. Stop unit (10) according to claim 2, wherein the alignment section (3) extends along an alignment section longitudinal axis (6) which is aligned orthogonally to the longitudinal axis (5) of the stop unit (10).

4. Stop unit (10) according to claim 2 or 3, wherein the alignment section (3) has an alignment adjustment element (36) by means of which the predetermined stop unit alignment can be adjusted.

5. Stop unit (10) according to one of claims 2 to 4, wherein the first fastening mechanism (11) comprises a first fastening element (31) which can be moved into a first fastening element movement by the first operating element movement in order to assume the first fastening position and thus engage with a first fastening section (17) of the power tool (20).

6. Stop unit (10) according to a preceding claim, wherein the stop body (1) is designed in the form of a strip.

7. Stop unit (10) according to a preceding claim, wherein the first fastening mechanism (11) is arranged at a first axial end (21) of the stop body (1) and / or the second fastening mechanism (12) is arranged at a second axial end (22) of the stop body (1).

8. Stop unit (10) according to a preceding claim, wherein the operating element (2) is designed as an operating lever and / or the first operating element movement is a first rotary movement in a first direction of rotation.

9. Power tool device (30), in particular saw device, comprising a power tool (20), in particular a saw unit, and a stop unit (10) according to any one of claims 1 to 8.

10. Power tool device (30) according to claim 9, wherein the stop unit (10) is designed as a parallel stop and is arranged laterally next to a tool (9) of the power tool (20) in a state attached to the power tool (20).

11. Power tool device (30) according to claim 9 or 10, wherein the stop unit (10) in the first fastening state is secured by the first fastening mechanism (11) is firmly fixed to the power tool (20) in all spatial directions.

12. Power tool device (30) according to one of claims 9 to 11, wherein the control element movement comprises a first control element movement phase which includes a / the first Fastening element - movement of one / the first fastening element (31) of the first fastening mechanism (11) causes the first fastening element (31) to be pressed against the first fastening section (17) of the power tool (20) by the first fastening element movement to establish the first fastening state, and wherein the control element movement includes a second control element movement phase following the first control element movement phase, which causes a second fastening element (32) of the second fastening mechanism to (12) is brought into engagement with a second fastening section (18) of the power tool (20) to secure the second to establish a secure condition.

13. Power tool device (30) according to claim 12, wherein the second fastening element (32) is brought into engagement with the second fastening section (18) by the first operating element movement only when the first fastening element movement is completed.

14. Power tool device (30) according to any one of claims 9 to 13, wherein the power tool (20) comprises a fastening groove (15) having a first groove inner surface providing a first fastening section (17) and a second groove inner surface opposite the first groove inner surface providing a reference section (4), wherein the first fastening mechanism (11) comprises a first fastening element (31) and an alignment section (3), wherein in the fastening position of the first fastening mechanism (11) the first fastening element (31) presses against the first groove inner surface and the alignment section (3) presses against the second groove inner surface to provide a clamping fastening of the stop unit (10) to the power tool (20).

15. Power tool device (30) according to one of claims 9 to 14, further comprising a position indicator for indicating a position of the stop unit (10) relative to the power tool (20) in a direction orthogonal to the longitudinal direction.

16. Method for operating a power tool device (30) according to any one of claims 9 to 15, comprising the step: moving the control element (2) into the first control element movement in order to sequentially move the fastening device first into the first fastening state and then into the second fastening state.

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